Outdoor unit distribution control method, system, device, and medium

Abstract

The application discloses an outdoor machine distribution control method, system, device and medium, which is applied to a controller of an air conditioner, the controller is in communication connection with a compressor, an outdoor fan, a plurality of temperature sensors and a plurality of mechanical flow limiting rings in the air conditioner, and the temperature sensors and the mechanical flow limiting rings are arranged in each distribution branch pipe of a distributor in the air conditioner. Through the embodiment of the application, in response to a start distribution instruction, the compressor and the outdoor fan are monitored and processed in real time to obtain a monitoring result; a mode confirmation process is performed according to the monitoring result to obtain a control mode; temperature sampling processes are performed on the plurality of temperature sensors respectively by using the control mode to obtain corresponding temperature deviation values; and adjustment control processes are performed on the plurality of mechanical flow limiting rings according to the temperature deviation values, so that real-time monitoring and independent adjustment of each distribution branch pipe are realized to control adaptive flow balance under a dynamic working condition, the operation capacity and the comfort of the air conditioner are improved, and the control efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner control, and in particular, to an outdoor unit liquid separation control method, system, device and medium. Background Art

[0002] For current serialized air conditioner outdoor units, fixed throttling technology is generally adopted in the outdoor unit liquid separation link of the refrigeration system. However, in actual manufacturing, assembly and long-term operation, this technology has the following defects: branch pipes are prone to problems such as inclination and eccentricity, which leads to large differences in flow resistance among various branches, forms unadjustable inherent flow deviation, which will result in uneven liquid separation and seriously affect the heat exchange effect of the unit. Especially under low-temperature working conditions where frost is easily formed, uneven liquid separation may cause more severe frosting, which seriously affects the operation capacity and comfort of the air conditioner. Meanwhile, this technology cannot cope with dynamic working conditions such as frequency conversion of compressors or fans.

[0003] Therefore, the existing outdoor unit liquid separation control technology has uneven liquid separation, affects the operation capacity and comfort of the air conditioner, and cannot cope with dynamic working conditions such as frequency conversion of compressors or fans, thereby resulting in low control efficiency. Summary of the Invention

[0004] Embodiments of the present invention provide an outdoor unit liquid separation control method, system, device and medium, aimed at solving the problem in the prior art that uneven liquid separation in outdoor unit liquid separation control technology affects the operation capacity and comfort of the air conditioner, cannot cope with dynamic working conditions such as frequency conversion of compressors or fans, and thereby leads to low control efficiency.

[0005] In order to solve the above problem, in a first aspect, embodiments of the present invention provide an outdoor unit liquid separation control method, which is applied to a controller of an air conditioner. The controller is in communication connection with a compressor, an outdoor fan, a plurality of temperature sensors and a plurality of mechanical flow limiting rings in the air conditioner, and the temperature sensors and the mechanical flow limiting rings are both arranged in each liquid separation branch pipe of a flow divider in the air conditioner. The outdoor unit liquid separation control method comprises: Responding to a liquid separation start instruction, performing real-time monitoring processing on the compressor and the outdoor fan to obtain a monitoring result; Performing mode confirmation processing according to the monitoring result to obtain a control mode; Performing temperature sampling processing on the plurality of temperature sensors respectively by using the control mode to obtain corresponding temperature deviation values; Performing adjustment control processing on the plurality of mechanical flow limiting rings according to the temperature deviation values.

[0006] Secondly, this application provides an outdoor unit liquid distribution control system, applied in the controller of an air conditioner. The controller is communicatively connected to the compressor, outdoor fan, several temperature sensors, and several mechanical flow-limiting rings in the air conditioner. The temperature sensors and mechanical flow-limiting rings are all disposed in each liquid distribution branch pipe of the distributor in the air conditioner. The outdoor unit liquid distribution control system includes: The monitoring unit is used to perform real-time monitoring and processing of the compressor and the external fan in response to the start liquid dispensing command to obtain monitoring results. A mode confirmation unit is used to perform mode confirmation processing based on the monitoring results to obtain a control mode. A temperature sampling unit is used to perform temperature sampling processing on several temperature sensors using the control mode to obtain corresponding temperature deviation values. An adjustment and control unit is used to adjust and control several of the mechanical flow-limiting rings according to the temperature deviation value.

[0007] Thirdly, embodiments of this application provide a computer device, the computer device including a memory and a processor connected to the memory; the memory is used to store a computer program, and the processor is used to run the computer program stored in the memory to perform the method described in the first aspect above.

[0008] Fourthly, embodiments of this application provide a storage medium storing a computer program, the computer program including program instructions, which, when executed by a processor, implement the method described in the first aspect above.

[0009] This invention provides an outdoor unit liquid distribution control method, system, device, and medium, applied in an air conditioner controller. The controller is communicatively connected to the air conditioner's compressor, outdoor fan, several temperature sensors, and several mechanical flow-limiting rings. The temperature sensors and mechanical flow-limiting rings are all located within the liquid distribution branches of the air conditioner's distributor. The outdoor unit liquid distribution control method includes: responding to a start liquid distribution command, performing real-time monitoring of the compressor and outdoor fan to obtain monitoring results; performing mode confirmation processing based on the monitoring results to obtain a control mode; using the control mode to perform temperature sampling processing on the several temperature sensors to obtain corresponding temperature deviation values; and adjusting and controlling the several mechanical flow-limiting rings based on the temperature deviation values. It can be seen that by implementing the embodiments of the present invention, in response to the start liquid dispensing command, the compressor and the outdoor fan are monitored in real time to obtain monitoring results; a control mode is obtained by confirming the mode based on the monitoring results; the temperature of several temperature sensors is sampled using the control mode to obtain corresponding temperature deviation values; and several mechanical flow limiting rings are adjusted and controlled based on the temperature deviation values, so as to realize real-time monitoring and independent adjustment of each liquid dispensing branch to control adaptive flow balance under dynamic operating conditions, improve the air conditioning's operating capacity and comfort, and thus improve control efficiency. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic flowchart of the outdoor unit liquid distribution control method provided in an embodiment of the present invention; Figure 2 A schematic diagram of a sub-process of the outdoor unit liquid distribution control method provided in an embodiment of the present invention; Figure 3 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in an embodiment of the present invention; Figure 4 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 5 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 6 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 7This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 8 A schematic block diagram of the outdoor unit liquid distribution control system provided in an embodiment of the present invention; Figure 9 A schematic structural diagram of the splitter body in an air conditioner provided in an embodiment of the present invention; Figure 10 This is a schematic structural diagram of a splitter in an air conditioner provided in an embodiment of the present invention; Figure 11 A schematic structural diagram of the anti-flattening bushing for the pipe opening in an air conditioner provided in an embodiment of the present invention; Figure 12 A schematic block diagram of a computer device provided for an embodiment of the present invention.

[0012] The labels for the attached figures are as follows: 10. Diverter body; 11. Inner flange structure; 12. Liquid distribution cavity; 13. Liquid distribution branch pipe; 14. Main manifold; 15. Anti-flattening bushing at the pipe opening. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0015] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0016] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0017] Please see Figures 1 to 7 as well as Figures 9 to 11 , Figure 1A schematic flowchart of the outdoor unit liquid distribution control method provided in an embodiment of the present invention; Figure 2 A schematic diagram of a sub-process of the outdoor unit liquid distribution control method provided in an embodiment of the present invention; Figure 3 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in an embodiment of the present invention; Figure 4 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 5 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 6 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 7 This is another sub-process diagram of the outdoor unit liquid distribution control method provided in the embodiments of the present invention; Figure 9 A schematic structural diagram of the splitter body in an air conditioner provided in an embodiment of the present invention; Figure 10 This is a schematic structural diagram of a splitter in an air conditioner provided in an embodiment of the present invention; Figure 11 This is a schematic structural diagram of the anti-flattening bushing for the pipe opening in an air conditioner provided in an embodiment of the present invention. Figures 1 to 7 as well as Figures 9 to 11 As shown, this embodiment of the invention provides an outdoor unit liquid distribution control method, which is applied in the controller of an air conditioner; the controller is communicatively connected to the compressor, outdoor fan, several temperature sensors and several mechanical flow-limiting rings in the air conditioner.

[0018] Specifically, such as Figures 9 to 11 As shown, the air conditioner mainly includes a compressor, an outdoor fan, several temperature sensors, several mechanical flow-limiting rings, and a distributor. The distributor specifically includes a distributor body 10, several liquid distribution branches 13, and a main manifold 14. Each liquid distribution branch 13 is equipped with a corresponding anti-flattening bushing 15, a temperature sensor, and a mechanical flow-limiting ring. The anti-flattening bushing 15 is specifically located at the end of the liquid distribution branch 13 connected to the distributor; this bushing fixes the end aperture to prevent deformation from affecting the uniformity of liquid distribution. The upper end of the liquid distribution branch 13 is connected to the condenser of the outdoor unit of the air conditioner, and refrigerant flows from the branch into the condenser. The temperature sensor can be specifically located in the straight section of the liquid distribution branch 13. The mechanical flow-limiting ring is specifically located at a position one-third of the distance from the distributor body in the straight section of the liquid distribution branch 13. The distributor is a liquid collection pipe assembly, commonly used in air conditioning excavators. It is a key internal piping assembly in the refrigeration circuit, connected to the condenser, and has a liquid distribution function.

[0019] Specifically, taking a four-hole distributor as an example, the distributor body 10 includes a four-hole inner flange structure 11 and a liquid distribution cavity 12, and several liquid distribution branch pipes 13 are also inner flange structures. One end of the main manifold 14 in the distributor body 10 is connected to the condenser outlet, and the other end is provided with an inner flange structure 11. Several liquid distribution branch pipes 13 are sequentially inserted into the main copper pipe and welded and fixed. At the same time, during the assembly process, the insertion depth of the branch pipes and the main manifold 14 needs to be strictly controlled. For example, the insertion depth of a 6mm diameter pipe needs to be within the range of 3.5mm ± 0.2mm to ensure that the contact area between all branch pipes and the inner wall of the main manifold 14 is consistent, avoiding the difference in flow cross-sectional area caused by depth deviation (such as if the branch pipe is inserted too shallowly, it will increase local resistance; if it is inserted too deeply, it may compress the flow channel), thereby significantly reducing the problem of uneven flow resistance caused by assembly errors. The insertion depth of the lower main pipe needs to be ≥ 8mm. If it is too shallow, it will lead to poor pipe verticality and affect the uniformity of liquid distribution. Compared to traditional outward-flared structures, this inward-flared design not only makes it easier to achieve consistent insertion depths of the branch pipes, but also further optimizes performance through the use of a rounded corner (R=0.5mm) at the inward-flared area. This rounded corner effectively disperses stress concentration during fluid flow, reduces turbulence and local eddies, and lowers pressure loss. Simultaneously, the rounded corner design avoids the risk of micro-cracks caused by sharp edges during welding or long-term vibration, improving structural reliability and sealing, and extending product lifespan. The insertion depth of the main manifold 14 and each branch pipe is the depth to which the two ends of the distributor are connected. Empirical values ​​generally require an insertion depth between 55% and 60% of the diameter of the main manifold 14. This avoids excessively short insertion depths leading to susceptibility to boundary layer interference, and excessively deep insertion depths leading to flow channel compression, blockage, or vibration. The insertion depth of the lower main manifold 14 refers to the insertion depth between the lower main manifold 14 and the end of the distributor, preventing misalignment between the lower main manifold 14 and the distributor. The flow distribution is the design of the outdoor unit's flow path. The specific number of branch pipes, i.e., the number of inlets in the flow path, is determined based on the heat exchange uniformity between the two heat exchangers.

[0020] The anti-flattening bushing 15 is a phosphor bronze C-type elastic bushing with an opening. Its outer diameter is 0.10~0.15mm larger than the inner diameter of the copper tube (adjusted interference to reduce stress impact on the thin-walled copper tube due to pressure fluctuations), with a wall thickness of 0.3mm, a length of 10mm, and an axial slit width of 0.4mm. The front end is chamfered at 45° for easy pressing, and the bushing covers the insertion depth of the branch pipe. A pneumatic press-fitting machine (pressure 0.15~0.25MPa, with a pressure sensor for real-time monitoring) is used to press the bushing into the outlet end of each branch pipe 13, to a depth of 5mm from the pipe opening. A ring-shaped positioning mark is imprinted on the outer wall of the copper tube 5mm from the pipe opening for visual inspection of the consistency of the pressing depth. After pressing, the bushing elastically opens and adheres tightly to the inner wall of the copper tube, forming permanent radial support. To prevent corrosion caused by the potential difference between phosphor bronze and copper, the bushing surface needs to be plated with a 3~5μm thick tin layer or coated with a polyimide insulating coating.

[0021] The existing distributor has an outward-flared structure and lacks anti-flattening bushings at the pipe ends. This makes the branch pipes prone to tilting, eccentricity, and inconsistent insertion depths, resulting in significant differences in flow resistance among the branches and creating inherent, unadjustable flow deviations. During the high-temperature processes of copper pipe insertion, bending, and brazing, the branch pipe outlets, lacking internal support, are highly susceptible to permanent deformation such as flattening, narrowing, and ellipticization, directly altering the nominal flow cross-sectional area of ​​each branch pipe. All these defects lead to uneven liquid distribution, severely impacting the unit's heat exchange performance. Especially in low-temperature conditions prone to frosting, uneven liquid distribution can exacerbate frosting, significantly affecting the air conditioner's heating capacity and comfort. This solution adopts an internally flanged diverter structure to improve the consistency of branch pipe insertion and reduce the difference in flow resistance. The anti-flattening bushing 15 at the pipe opening provides radial support to the copper pipe wall through the built-in open elastic anti-flattening bushing, so that it maintains a circular cross-section throughout the bending and welding process, preventing permanent deformation of the branch pipe outlet end during processing and operation. This can eliminate pipe opening flattening and diameter reduction during production and solve the problem of pipe opening deformation caused by lack of internal support during copper pipe insertion, bending and welding.

[0022] The outdoor unit liquid distribution control method includes the following steps S110-S140.

[0023] S110. In response to the start liquid separation command, the compressor and the external fan are monitored in real time to obtain the monitoring results.

[0024] In this embodiment, upon receiving the start liquid dispensing command, the controller first performs real-time monitoring of the compressor and the outdoor fan to obtain monitoring results. Simultaneously, the controller can also perform real-time monitoring of the air conditioning mode to obtain monitoring results.

[0025] The start dispensing command can be sent by the user via a button or automatically generated when the air conditioner is turned on.

[0026] In one embodiment, such as Figure 1 and Figure 2 As shown, the real-time monitoring and processing of the compressor and the external fan to obtain the monitoring results includes: S111. If the frequency change rate of the compressor is detected to be greater than the frequency threshold, the monitoring result is that the state has changed. S112. If the rate of change of the external fan speed is detected to be greater than or equal to the speed threshold, the monitoring result is that the state has changed. S113. If the frequency change rate of the compressor is detected to be less than or equal to the frequency threshold, the monitoring result is that the state has not changed. S114. If the rate of change of the external fan speed is less than the speed threshold, the monitoring result is that the state has not changed.

[0027] In this embodiment, as Figure 1 and Figure 2 As shown, if the frequency change rate of the compressor is detected to be greater than a frequency threshold, the monitoring result is a change in state. Specifically, within a preset change period, the frequency change rate of the compressor is acquired, and when the frequency change rate is greater than the frequency threshold, the monitoring result is confirmed to be a change in state. The frequency threshold can be 5 Hz / s, and the preset change period can be 10s, 30s, 50s, etc., determined through specific experiments.

[0028] If the detected rate of change of the external fan speed is greater than or equal to a speed threshold, the monitoring result is a change in state. Specifically, within the preset change period, the rate of change of the external fan speed is acquired, and when the rate of change of the speed speed is greater than the speed threshold, the monitoring result is confirmed to be a change in state. The speed threshold, determined through specific experiments, can be 20% of the maximum speed of the external fan.

[0029] If the frequency change rate of the compressor is detected to be less than or equal to the frequency threshold, the monitoring result is that the state has not changed. Specifically, within the preset change period, the frequency change rate of the compressor is obtained, and when the frequency change rate is less than or equal to the frequency threshold, the monitoring result is confirmed to be that the state has not changed.

[0030] If the rate of change of the external fan speed is less than the speed threshold, the monitoring result is that the state has not changed; within the preset change period, the rate of change of the external fan speed is obtained, and when the rate of change of the speed speed is less than the speed threshold, it is confirmed that the monitoring result is that the state has not changed.

[0031] Furthermore, the real-time monitoring and processing of the compressor and the external fan to obtain the monitoring results also includes: If the air conditioning mode switch is detected, the monitoring result is a change in status; If the air conditioning mode is not switched, the monitoring result is that the status has not changed.

[0032] In this embodiment, the switching or non-switching of the air conditioning mode refers to the switching between the cooling mode and the heating mode. That is, within the preset change period, when the air conditioning mode switches from the cooling mode to the heating mode or from the heating mode to the cooling mode, the air conditioning mode switch is confirmed, and the monitoring result is confirmed to be a change in state. Within the preset change period, when the air conditioning mode remains in the cooling mode or the heating mode, the air conditioning mode is confirmed to be non-switched, and the monitoring result is confirmed to be a non-change in state.

[0033] As can be seen from the above embodiments, when the controller receives the start liquid dispensing command, it performs real-time monitoring and processing of the compressor and the external fan to obtain monitoring results. The monitoring results can be used for subsequent targeted processing to ensure the accuracy of the processing and thus improve control efficiency.

[0034] S120. Based on the monitoring results, a mode confirmation process is performed to obtain the control mode.

[0035] In this embodiment, when the controller acquires the monitoring results, it can perform mode confirmation processing based on the monitoring results to obtain a control mode. The monitoring results include two types: a changed state and no changed state. The control modes include a first control mode and a second control mode.

[0036] In one embodiment, such as Figure 1 and Figure 3 As shown, the process of obtaining a control mode by performing pattern confirmation processing based on the monitoring results includes: S121. If the monitoring result is a change in state, then the control mode is confirmed to be the first control mode. S122. If the monitoring result shows that the state has not changed, then the control mode is confirmed to be the second control mode.

[0037] In this embodiment, as Figure 1 and Figure 3 As shown, when the monitoring result indicates a change in state, the control mode is confirmed as the first control mode; when the monitoring result indicates no change in state, the control mode is confirmed as the second control mode.

[0038] As can be seen from the above embodiments, the control mode is obtained by performing pattern confirmation processing based on the monitoring results, which ensures the accuracy of subsequent processing and thus improves control efficiency.

[0039] S130. Using the control mode, temperature sampling processing is performed on several temperature sensors to obtain corresponding temperature deviation values.

[0040] In this embodiment, when the controller acquires the control mode, it can use the control mode to perform temperature sampling processing on several temperature sensors to obtain corresponding temperature deviation values. The temperature deviation values ​​include a first temperature deviation value and a second temperature deviation value.

[0041] In one embodiment, such as Figure 1 and Figure 4 As shown, the step of using the control mode to perform temperature sampling processing on several temperature sensors to obtain corresponding temperature deviation values ​​includes: S131. When the control mode is the first control mode, the temperature of several temperature sensors is sampled according to the first sampling period and sampling frequency to obtain the corresponding branch temperature set. S132. Perform data averaging and filtering on the branch pipe temperature set to obtain the first temperature value; S133. Perform deviation calculation processing on several of the first temperature values ​​to obtain the corresponding first temperature deviation values.

[0042] In this embodiment, as Figure 1 and Figure 4 As shown, when the control mode is the first control mode, temperature sampling processing is performed on several temperature sensors according to the first sampling period and sampling frequency to obtain the corresponding branch pipe temperature set; specifically, when the control mode is confirmed to be the first control mode, temperature sampling processing is directly performed on several temperature sensors according to the first sampling period and the sampling frequency to obtain the corresponding branch pipe temperature set. Wherein, based on specific experiments, the first sampling period can be 3 seconds, etc., and the sampling frequency can be 3 times or 4 times, etc., that is, the temperature sensor is sampled 3 or 4 times within 3 seconds.

[0043] The process involves averaging and filtering the branch pipe temperature set to obtain a first temperature value. Specifically, the maximum and minimum values ​​of the branch pipe temperature set are removed to obtain a third temperature value. This third temperature value is then averaged to obtain a first average value. Historical temperature values ​​from the previous sampling period are obtained. A first-order filter is then applied to the first average value and the historical temperature value using a filtering formula to obtain the first temperature value. The filtering formula is: First temperature value = First filter coefficient × First average value + Second filter coefficient × Historical temperature value. Based on specific experiments, the first filter coefficient can be 0.7, the second filter coefficient can be 0.3, and the historical temperature value is the historical temperature value from the previous sampling period after averaging and filtering.

[0044] The first temperature deviation value is obtained by performing deviation calculation on several first temperature values ​​respectively. Specifically, the second average value is obtained by averaging several first temperature values, and the difference between the first temperature value and the second average value is used as the first temperature deviation value.

[0045] In one embodiment, such as Figure 1 and Figure 5 As shown, the step of using the control mode to perform temperature sampling processing on several temperature sensors to obtain corresponding temperature deviation values ​​further includes: S134. When the control mode is the second control mode, the temperature sampling process is performed on several temperature sensors according to the second sampling period and the sampling frequency to obtain the corresponding branch temperature set. S135. Perform data averaging and filtering on the branch pipe temperature set to obtain a second temperature value; S136. Perform deviation calculation processing on several second temperature values ​​to obtain the corresponding second temperature deviation value.

[0046] In this embodiment, as Figure 1 and Figure 5 As shown, when the control mode is the second control mode, temperature sampling is performed on several temperature sensors according to the second sampling period and the sampling frequency to obtain the corresponding branch pipe temperature set. Specifically, when the control mode is confirmed to be the second control mode, temperature sampling is directly performed on several temperature sensors according to the second sampling period and the sampling frequency to obtain the corresponding branch pipe temperature set. The second sampling period can be 5 seconds, etc., and the sampling frequency can be 3 or 4 times, etc., that is, the temperature sensor is sampled 3 or 4 times within 5 seconds.

[0047] The process involves averaging and filtering the branch pipe temperature set to obtain a second temperature value. Specifically, the maximum and minimum values ​​of the branch pipe temperature set are removed to obtain a fourth temperature value. This fourth temperature value is then averaged to obtain a third average value. Historical temperature values ​​from the previous sampling period are obtained. A first-order filter is then applied to the third average value and the historical temperature value using a filtering formula to obtain the second temperature value. The filtering formula is: Second temperature value = First filter coefficient × Third average value + Second filter coefficient × Historical temperature value. Based on specific experiments, the first filter coefficient can be 0.7, the second filter coefficient can be 0.3, and the historical temperature value is the historical temperature value from the previous sampling period after averaging and filtering.

[0048] The step involves performing deviation calculations on several second temperature values ​​to obtain corresponding second temperature deviation values. Specifically, the step involves averaging several second temperature values ​​to obtain a fourth average value, and the difference between the first temperature value and the fourth average value is taken as the second temperature deviation value.

[0049] As can be seen from the above embodiments, based on the real-time monitoring of the inlet temperature of each liquid distribution branch heat exchanger and the independent adjustment of the mechanical flow limiting ring, it is possible to actively compensate for the uneven flow caused by structural deviations, changes in operating conditions and component aging, so that the heat exchange temperature difference of each liquid distribution branch is stabilized within ±1.0℃, solving the problem of increased flow deviation and decreased energy efficiency of the fixed throttling structure after frequency conversion and changes in operating conditions, realizing adaptive flow balance under dynamic operating conditions, thereby improving control efficiency.

[0050] S140. Adjust and control several mechanical flow-limiting rings according to the temperature deviation value.

[0051] In this embodiment, after obtaining the temperature deviation value, the controller adjusts and controls several mechanical current-limiting rings according to the temperature deviation value. The temperature deviation value includes a first temperature deviation value and a second temperature deviation value.

[0052] In one embodiment, such as Figure 1 and Figure 6 As shown, the adjustment and control process for the plurality of mechanical flow-limiting rings based on the temperature deviation value includes: S141. If the absolute value of the first temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept unchanged. S142. If the first temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the first opening degree increment algorithm. S143. If the first temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the second opening degree increment algorithm.

[0053] In this embodiment, as Figure 1 and Figure 6 As shown, if the absolute value of the first temperature deviation is less than or equal to the first temperature threshold, the opening of the corresponding mechanical current-limiting ring is kept constant. Specifically, the absolute value of the first temperature deviation is obtained, and when the absolute value of the first temperature deviation is less than or equal to the first temperature threshold, the opening of the corresponding mechanical current-limiting ring is kept constant. The first temperature threshold is determined to be 1.0℃ based on specific experiments.

[0054] If the first temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow-limiting ring is controlled according to the first opening increment algorithm. Specifically, when the first temperature deviation value is greater than the first temperature threshold, the first opening increment algorithm is used to obtain the first opening increment, and the opening degree of the corresponding mechanical flow-limiting ring is controlled using the first opening increment. The formula corresponding to the first opening increment algorithm is: First opening increment = +3% × (First temperature deviation value - First temperature threshold).

[0055] If the first temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical current-limiting ring is controlled according to the second opening degree increment algorithm. Specifically, when the first temperature deviation value is less than the second temperature threshold, the second opening degree increment is obtained using the second opening degree increment algorithm, and the opening degree of the corresponding mechanical current-limiting ring is controlled using the second opening degree increment. The second temperature threshold is determined to be -1.0℃ based on specific experiments. The formula corresponding to the second opening degree increment algorithm is: Second opening degree increment = -3% × (|first temperature deviation value| - |second temperature threshold|).

[0056] Simultaneously, the opening of the mechanical flow-limiting ring on the branch pipe is adjusted by applying a corresponding pressure signal to the mechanical flow-limiting ring based on the opening increment calculated by temperature. The spring load inside the mechanical flow-limiting ring pushes the diaphragm to adjust the opening.

[0057] Furthermore, if the maximum |first temperature deviation| is ≤0.8℃ within the first sampling period for four consecutive times, the first control mode is exited, and the compressor and the external fan are monitored in real time to obtain the monitoring results.

[0058] As can be seen from the above embodiments, based on the real-time monitoring of the inlet temperature of each liquid distribution branch heat exchanger and the independent adjustment of the mechanical flow limiting ring, it is possible to actively compensate for the uneven flow caused by structural deviations, changes in operating conditions and component aging, so that the heat exchange temperature difference of each liquid distribution branch is stabilized within ±1.0℃, solving the problem of increased flow deviation and decreased energy efficiency of the fixed throttling structure after frequency conversion and changes in operating conditions, realizing adaptive flow balance under dynamic operating conditions, thereby improving control efficiency.

[0059] In one embodiment, such as Figure 1 and Figure 7 As shown, the step of adjusting and controlling the plurality of mechanical flow-limiting rings according to the temperature deviation value further includes: S144. If the absolute value of the second temperature deviation is less than or equal to the first temperature threshold, then control the opening of the corresponding mechanical flow-limiting ring to remain unchanged. S145. If the second temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the third opening degree increment algorithm. S146. If the second temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the fourth opening degree increment algorithm.

[0060] In this embodiment, as Figure 1 and Figure 7 As shown, if the absolute value of the second temperature deviation is less than or equal to the first temperature threshold, the opening of the corresponding mechanical current-limiting ring is kept constant. Specifically, the absolute value of the second temperature deviation is obtained, and when the absolute value of the second temperature deviation is less than or equal to the first temperature threshold, the opening of the corresponding mechanical current-limiting ring is kept constant. The first temperature threshold is determined to be 1.0℃ based on specific experiments.

[0061] If the second temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical current-limiting ring is controlled according to the third opening increment algorithm. Specifically, when the second temperature deviation value is greater than the first temperature threshold, the third opening increment algorithm is used to obtain the third opening increment, and the opening degree of the corresponding mechanical current-limiting ring is controlled by the third opening increment. The formula corresponding to the third opening increment algorithm is: Third opening increment = +4.5% × (Second temperature deviation value - First temperature threshold).

[0062] If the second temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical current-limiting ring is controlled according to the fourth opening increment algorithm. Specifically, when the second temperature deviation value is less than the second temperature threshold, the fourth opening increment is obtained using the fourth opening increment algorithm, and the opening degree of the corresponding mechanical current-limiting ring is controlled using the fourth opening increment. The fourth temperature threshold is determined to be -1.0℃ based on specific experiments. The formula corresponding to the fourth opening increment algorithm is: Fourth opening increment = -4.5% × (|second temperature deviation value| - |second temperature threshold|).

[0063] Furthermore, when the maximum |second temperature deviation| is ≤0.8℃ within four consecutive second sampling cycles, the second control mode is exited, and the compressor and the external fan are monitored in real time to obtain the monitoring results.

[0064] As can be seen from the above embodiments, based on the real-time monitoring of the inlet temperature of each liquid distribution branch heat exchanger and the independent adjustment of the mechanical flow limiting ring, it is possible to actively compensate for the uneven flow caused by structural deviations, changes in operating conditions and component aging, so that the heat exchange temperature difference of each liquid distribution branch is stabilized within ±1.0℃, solving the problem of increased flow deviation and decreased energy efficiency of the fixed throttling structure after frequency conversion and changes in operating conditions, realizing adaptive flow balance under dynamic operating conditions, thereby improving control efficiency.

[0065] Furthermore, if the temperature value of the temperature sensor exceeds the range of -30℃ or 80℃ for 30 seconds, or if the change between two adjacent sampling values ​​exceeds 10℃ / s, it is determined that the temperature sensor is faulty, and a fault signal is sent to the controller.

[0066] Please see Figure 8 as well as Figures 9 to 11 , Figure 8 A schematic block diagram of the outdoor unit liquid distribution control system provided in an embodiment of the present invention; Figure 9 A schematic structural diagram of the splitter body in an air conditioner provided in an embodiment of the present invention; Figure 10 This is a schematic structural diagram of a splitter in an air conditioner provided in an embodiment of the present invention; Figure 11 This is a schematic structural diagram of the anti-flattening bushing for the pipe opening in an air conditioner provided in an embodiment of the present invention. Figure 8 as well as Figures 9 to 11 As shown, this embodiment of the invention provides an outdoor unit liquid distribution control system 200 that implements the method described above, which is applied in the controller of an air conditioner; the controller is communicatively connected to the compressor, outdoor fan, several temperature sensors and several mechanical flow-limiting rings in the air conditioner.

[0067] Specifically, such as Figures 9 to 11As shown, the air conditioner mainly includes a compressor, an outdoor fan, several temperature sensors, several mechanical flow-limiting rings, and a distributor. The distributor specifically includes a distributor body 10, several liquid distribution branches 13, and a main manifold 14. Each liquid distribution branch 13 is equipped with a corresponding anti-flattening bushing 15, a temperature sensor, and a mechanical flow-limiting ring. The anti-flattening bushing 15 is specifically located at the end of the liquid distribution branch 13 connected to the distributor; this bushing fixes the end aperture to prevent deformation from affecting the uniformity of liquid distribution. The upper end of the liquid distribution branch 13 is connected to the condenser of the outdoor unit of the air conditioner, and refrigerant flows from the branch into the condenser. The temperature sensor can be specifically located in the straight section of the liquid distribution branch 13. The mechanical flow-limiting ring is specifically located at a position one-third of the distance from the distributor body in the straight section of the liquid distribution branch 13. The distributor is a liquid collection pipe assembly, commonly used in air conditioning excavators. It is a key internal piping assembly in the refrigeration circuit, connected to the condenser, and has a liquid distribution function.

[0068] Specifically, taking a four-hole distributor as an example, the distributor body 10 includes a four-hole inner flange structure 11 and a liquid distribution cavity 12, and several liquid distribution branch pipes 13 are also inner flange structures 11; one end of the main manifold 14 in the distributor body 10 is connected to the condenser outlet, and the other end is provided with an inner flange structure 11. Several liquid distribution branch pipes 13 are sequentially inserted into the main copper pipe and welded and fixed. At the same time, during the assembly process, the insertion depth of the branch pipes and the main manifold 14 needs to be strictly controlled. For example, the insertion depth of a 6mm diameter pipe needs to be within the range of 3.5mm ± 0.2mm to ensure that the contact area between all branch pipes and the inner wall of the main manifold 14 is consistent, avoiding the difference in flow cross-sectional area caused by depth deviation (such as if the branch pipe is inserted too shallowly, it will increase local resistance; if it is inserted too deeply, it may compress the flow channel), thereby significantly reducing the problem of uneven flow resistance caused by assembly errors. The insertion depth of the lower main pipe needs to be ≥8mm. If it is too shallow, it will lead to poor pipe verticality and affect the uniformity of liquid distribution. Compared to traditional outward-flared structures, this inward-flared design not only makes it easier to achieve consistent insertion depths of the branch pipes, but also further optimizes performance through the use of a rounded corner (R=0.5mm) at the inward-flared area. This rounded corner effectively disperses stress concentration during fluid flow, reduces turbulence and local eddies, and lowers pressure loss. Simultaneously, the rounded corner design avoids the risk of micro-cracks caused by sharp edges during welding or long-term vibration, improving structural reliability and sealing, and extending product lifespan. The insertion depth of the main manifold 14 and each branch pipe is the depth to which the two ends of the distributor are connected. Empirical values ​​generally require an insertion depth between 55% and 60% of the diameter of the main manifold 14. This avoids excessively short insertion depths leading to susceptibility to boundary layer interference, and excessively deep insertion depths leading to flow channel compression, blockage, or vibration. The insertion depth of the lower main manifold 14 refers to the insertion depth between the lower main manifold 14 and the end of the distributor, preventing misalignment between the lower main manifold 14 and the distributor. The flow distribution is the design of the outdoor unit's flow path. The specific number of branch pipes, i.e., the number of inlets in the flow path, is determined based on the heat exchange uniformity between the two heat exchangers.

[0069] The anti-flattening bushing 15 is a phosphor bronze C-type elastic bushing with an opening. Its outer diameter is 0.10~0.15mm larger than the inner diameter of the copper tube (adjusted interference to reduce stress impact on the thin-walled copper tube due to pressure fluctuations), with a wall thickness of 0.3mm, a length of 10mm, and an axial slit width of 0.4mm. The front end is chamfered at 45° for easy pressing, and the bushing covers the insertion depth of the branch pipe. A pneumatic press-fitting machine (pressure 0.15~0.25MPa, with a pressure sensor for real-time monitoring) is used to press the bushing into the outlet end of each branch pipe 13, to a depth of 5mm from the pipe opening. A ring-shaped positioning mark is imprinted on the outer wall of the copper tube 5mm from the pipe opening for visual inspection of the consistency of the pressing depth. After pressing, the bushing elastically opens and adheres tightly to the inner wall of the copper tube, forming permanent radial support. To prevent corrosion caused by the potential difference between phosphor bronze and copper, the bushing surface needs to be plated with a 3~5μm thick tin layer or coated with a polyimide insulating coating.

[0070] The existing distributor has an outward-flared structure and lacks anti-flattening bushings at the pipe ends. This makes the branch pipes prone to tilting, eccentricity, and inconsistent insertion depths, resulting in significant differences in flow resistance among the branches and creating inherent, unadjustable flow deviations. During the high-temperature processes of copper pipe insertion, bending, and brazing, the branch pipe outlets, lacking internal support, are highly susceptible to permanent deformation such as flattening, narrowing, and ellipticization, directly altering the nominal flow cross-sectional area of ​​each branch pipe. All these defects lead to uneven liquid distribution, severely impacting the unit's heat exchange performance. Especially in low-temperature conditions prone to frosting, uneven liquid distribution can exacerbate frosting, significantly affecting the air conditioner's heating capacity and comfort. This solution adopts an internally flanged diverter structure to improve the consistency of branch pipe insertion and reduce the difference in flow resistance. The anti-flattening bushing 15 at the pipe opening provides radial support to the copper pipe wall through the built-in open elastic anti-flattening bushing, so that it maintains a circular cross-section throughout the bending and welding process, preventing permanent deformation of the branch pipe outlet end during processing and operation. This can eliminate pipe opening flattening and diameter reduction during production and solve the problem of pipe opening deformation caused by lack of internal support during copper pipe insertion, bending and welding.

[0071] The outdoor unit liquid distribution control system 200 includes: a monitoring unit 210, a mode confirmation unit 220, a temperature sampling unit 230, and an adjustment control unit 240.

[0072] The monitoring unit 210 is used to perform real-time monitoring and processing of the compressor and the external fan in response to the start liquid separation command to obtain monitoring results.

[0073] The mode confirmation unit 220 is used to perform mode confirmation processing based on the monitoring results to obtain the control mode.

[0074] Temperature sampling unit 230 is used to perform temperature sampling processing on several temperature sensors respectively using the control mode to obtain corresponding temperature deviation values; The adjustment control unit 240 is used to adjust and control a plurality of mechanical flow-limiting rings according to the temperature deviation value.

[0075] In some embodiments, when the monitoring unit 210 performs the processing step of real-time monitoring of the compressor and the external fan to obtain monitoring results, it is specifically used for: If the frequency change rate of the compressor is detected to be greater than the frequency threshold, the monitoring result is that the state has changed; If the rate of change of the external fan speed is detected to be greater than or equal to the speed threshold, the monitoring result is that the state has changed; If the frequency change rate of the compressor is detected to be less than or equal to the frequency threshold, the monitoring result is that the state has not changed. If the rate of change of the external fan speed is less than the speed threshold, the monitoring result is that the state has not changed.

[0076] In some embodiments, when the mode confirmation unit 220 performs the processing step of obtaining a control mode by performing mode confirmation processing based on the monitoring results, it is specifically used for: If the monitoring result indicates a change in state, then the control mode is confirmed to be the first control mode. If the monitoring result shows that the state has not changed, then the control mode is confirmed to be the second control mode.

[0077] In some embodiments, when the temperature sampling unit 230 performs the processing step of sampling the temperature of the plurality of temperature sensors using the control mode to obtain the corresponding temperature deviation value, it is specifically used for: When the control mode is the first control mode, the temperature of several temperature sensors is sampled according to the first sampling period and sampling frequency to obtain the corresponding branch temperature set. The first temperature value is obtained by averaging and filtering the temperature set of the branch pipes. The deviation values ​​of the first temperature are calculated and processed separately to obtain the corresponding first temperature deviation values.

[0078] In some embodiments, when the adjustment control unit 240 performs the processing step of adjusting and controlling the plurality of mechanical flow-limiting rings according to the temperature deviation value, it is specifically used for: If the absolute value of the first temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the first temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the first opening degree increment algorithm. If the first temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the second opening degree increment algorithm.

[0079] In some embodiments, when the temperature sampling unit 230 performs the processing step of sampling the temperature of the plurality of temperature sensors using the control mode to obtain the corresponding temperature deviation value, it is further specifically used for: When the control mode is the second control mode, the temperature sampling process is performed on several temperature sensors according to the second sampling period and the sampling frequency to obtain the corresponding branch temperature set. The second temperature value is obtained by averaging and filtering the temperature set of the branch pipe. The deviation values ​​of the second temperature are calculated and processed separately to obtain the corresponding second temperature deviation values.

[0080] In some embodiments, when the adjustment control unit 240 performs the processing step of adjusting and controlling the plurality of mechanical flow-limiting rings according to the temperature deviation value, it is specifically used for: If the absolute value of the second temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the second temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the third opening degree increment algorithm. If the second temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the fourth opening degree increment algorithm.

[0081] It should be noted that those skilled in the art can clearly understand that the specific implementation process of the above system and each user can be referred to the corresponding description in the foregoing method embodiments. For the sake of convenience and brevity, it will not be repeated here.

[0082] The above system can be implemented as a computer program, and the computer program can be implemented in, for example... Figure 8 It runs on the computer device shown.

[0083] Please see Figure 12 , Figure 12 This is a schematic block diagram of a computer device 500 provided as an embodiment of this application. The computer device 500 includes terminal devices such as computers and servers. Figure 12 As shown, the device 500 includes a processor 502, a memory, and a network interface 505 connected via a system bus 501. The memory may include a non-volatile storage medium 503 and internal memory 504.

[0084] The non-volatile storage medium 503 can store an operating system 5031 and a computer program 5032. When the computer program 5032 stored in the non-volatile storage medium is executed by the processor 502, it can implement the above-described outdoor liquid dispensing control method. The processor 502 provides computing and control capabilities to support the operation of the entire device 500. The internal memory 504 provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor 502, it enables the processor 502 to execute the above-described outdoor liquid dispensing control method. The network interface 505 is used for network communication. Those skilled in the art will understand that the structure shown in the figures is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the device to which the present invention is applied. Specific devices may include more or fewer components than shown in the figures, or combinations of certain components, or different component arrangements.

[0085] The processor 502 is used to run a computer program stored in the memory to perform the following steps: In response to the start liquid separation command, the compressor and the external fan are monitored in real time to obtain monitoring results; The control mode is obtained by performing pattern confirmation processing based on the monitoring results; The temperature deviation value is obtained by performing temperature sampling processing on several temperature sensors using the control mode. The mechanical flow-limiting rings are adjusted and controlled according to the temperature deviation value.

[0086] In some embodiments, when performing the processing step of obtaining monitoring results through real-time monitoring of the compressor and the external fan, the process is specifically used for: If the frequency change rate of the compressor is detected to be greater than the frequency threshold, the monitoring result is that the state has changed; If the rate of change of the external fan speed is detected to be greater than or equal to the speed threshold, the monitoring result is that the state has changed; If the frequency change rate of the compressor is detected to be less than or equal to the frequency threshold, the monitoring result is that the state has not changed. If the rate of change of the external fan speed is less than the speed threshold, the monitoring result is that the state has not changed.

[0087] In some embodiments, when performing the step of obtaining a control mode by performing pattern confirmation processing based on the monitoring results, the process is specifically used for: If the monitoring result indicates a change in state, then the control mode is confirmed to be the first control mode. If the monitoring result shows that the state has not changed, then the control mode is confirmed to be the second control mode.

[0088] In some embodiments, when performing the processing step of sampling temperatures from the plurality of temperature sensors using the control mode to obtain corresponding temperature deviation values, the specific steps are as follows: When the control mode is the first control mode, the temperature of several temperature sensors is sampled according to the first sampling period and sampling frequency to obtain the corresponding branch temperature set. The first temperature value is obtained by averaging and filtering the temperature set of the branch pipes. The deviation values ​​of the first temperature are calculated and processed separately to obtain the corresponding first temperature deviation values.

[0089] In some embodiments, when performing the process step of adjusting and controlling the plurality of mechanical flow-limiting rings according to the temperature deviation value, the specific steps are as follows: If the absolute value of the first temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the first temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the first opening degree increment algorithm. If the first temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the second opening degree increment algorithm.

[0090] In some embodiments, when performing the processing step of sampling the temperature of the plurality of temperature sensors using the control mode to obtain the corresponding temperature deviation value, it is further specifically used for: When the control mode is the second control mode, the temperature sampling process is performed on several temperature sensors according to the second sampling period and the sampling frequency to obtain the corresponding branch temperature set. The second temperature value is obtained by averaging and filtering the temperature set of the branch pipe. The deviation values ​​of the second temperature are calculated and processed separately to obtain the corresponding second temperature deviation values.

[0091] In some embodiments, when performing the process step of adjusting and controlling the plurality of mechanical flow-limiting rings according to the temperature deviation value, the specific steps are as follows: If the absolute value of the second temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the second temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the third opening degree increment algorithm. If the second temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the fourth opening degree increment algorithm.

[0092] It should be understood that, in the embodiments of this application, the processor 502 may be a Central Processing Unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0093] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a storage medium, which can be a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0094] Therefore, embodiments of this application also provide a storage medium. This storage medium can be a computer-readable storage medium, including non-volatile computer-readable storage media. The storage medium stores a computer program that, when executed by a processor, performs the following steps: In response to the start liquid separation command, the compressor and the external fan are monitored in real time to obtain monitoring results; The control mode is obtained by performing pattern confirmation processing based on the monitoring results; The temperature deviation value is obtained by performing temperature sampling processing on several temperature sensors using the control mode. The mechanical flow-limiting rings are adjusted and controlled according to the temperature deviation value.

[0095] In some embodiments, when performing the processing step of obtaining monitoring results through real-time monitoring of the compressor and the external fan, the process is specifically used for: If the frequency change rate of the compressor is detected to be greater than the frequency threshold, the monitoring result is that the state has changed; If the rate of change of the external fan speed is detected to be greater than or equal to the speed threshold, the monitoring result is that the state has changed; If the frequency change rate of the compressor is detected to be less than or equal to the frequency threshold, the monitoring result is that the state has not changed. If the rate of change of the external fan speed is less than the speed threshold, the monitoring result is that the state has not changed.

[0096] In some embodiments, when performing the step of obtaining a control mode by performing pattern confirmation processing based on the monitoring results, the process is specifically used for: If the monitoring result indicates a change in state, then the control mode is confirmed to be the first control mode. If the monitoring result shows that the state has not changed, then the control mode is confirmed to be the second control mode.

[0097] In some embodiments, when performing the processing step of sampling temperatures from the plurality of temperature sensors using the control mode to obtain corresponding temperature deviation values, the specific steps are as follows: When the control mode is the first control mode, the temperature of several temperature sensors is sampled according to the first sampling period and sampling frequency to obtain the corresponding branch temperature set. The first temperature value is obtained by averaging and filtering the temperature set of the branch pipes. The deviation values ​​of the first temperature are calculated and processed separately to obtain the corresponding first temperature deviation values.

[0098] In some embodiments, when performing the process step of adjusting and controlling the plurality of mechanical flow-limiting rings according to the temperature deviation value, the specific steps are as follows: If the absolute value of the first temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the first temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the first opening degree increment algorithm. If the first temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the second opening degree increment algorithm.

[0099] In some embodiments, when performing the processing step of sampling the temperature of the plurality of temperature sensors using the control mode to obtain the corresponding temperature deviation value, it is further specifically used for: When the control mode is the second control mode, the temperature sampling process is performed on several temperature sensors according to the second sampling period and the sampling frequency to obtain the corresponding branch temperature set. The second temperature value is obtained by averaging and filtering the temperature set of the branch pipe. The deviation values ​​of the second temperature are calculated and processed separately to obtain the corresponding second temperature deviation values.

[0100] In some embodiments, when performing the process step of adjusting and controlling the plurality of mechanical flow-limiting rings according to the temperature deviation value, the specific steps are as follows: If the absolute value of the second temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the second temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the third opening degree increment algorithm. If the second temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the fourth opening degree increment algorithm.

[0101] The storage medium can be any computer-readable storage medium capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), magnetic disk, or optical disk.

[0102] In the several embodiments provided in this application, it should be understood that the disclosed apparatus, devices, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, and the division of units is only a logical functional division; in actual implementation, there may be other division methods. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the apparatus, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0103] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for controlling liquid distribution in an outdoor unit, characterized in that, The controller is used in an air conditioner. The controller is communicatively connected to the compressor, outdoor fan, several temperature sensors and several mechanical flow-limiting rings in the air conditioner. The temperature sensors and the mechanical flow-limiting rings are all installed in each liquid distribution branch pipe of the distributor in the air conditioner. The outdoor unit liquid distribution control method includes: In response to the start liquid separation command, the compressor and the external fan are monitored in real time to obtain monitoring results; The control mode is obtained by performing pattern confirmation processing based on the monitoring results; The temperature deviation value is obtained by performing temperature sampling processing on several temperature sensors using the control mode. The mechanical flow-limiting rings are adjusted and controlled according to the temperature deviation value.

2. The outdoor unit liquid distribution control method according to claim 1, characterized in that, The real-time monitoring and processing of the compressor and the external fan to obtain monitoring results includes: If the frequency change rate of the compressor is detected to be greater than the frequency threshold, the monitoring result is that the state has changed; If the rate of change of the external fan speed is detected to be greater than or equal to the speed threshold, the monitoring result is that the state has changed; If the frequency change rate of the compressor is detected to be less than or equal to the frequency threshold, the monitoring result is that the state has not changed. If the rate of change of the external fan speed is less than the speed threshold, the monitoring result is that the state has not changed.

3. The outdoor unit liquid distribution control method according to claim 2, characterized in that, The process of obtaining a control mode by confirming the mode based on the monitoring results includes: If the monitoring result indicates a change in state, then the control mode is confirmed to be the first control mode; If the monitoring result shows that the state has not changed, then the control mode is confirmed to be the second control mode.

4. The outdoor unit liquid distribution control method according to claim 1, characterized in that, The step of using the control mode to perform temperature sampling processing on several temperature sensors to obtain corresponding temperature deviation values ​​includes: When the control mode is the first control mode, the temperature sampling process is performed on several temperature sensors according to the first sampling period and sampling frequency to obtain the corresponding branch temperature set. The first temperature value is obtained by averaging and filtering the temperature set of the branch pipes. The deviation values ​​of the first temperature are calculated and processed separately to obtain the corresponding first temperature deviation values.

5. The outdoor unit liquid distribution control method according to claim 4, characterized in that, The adjustment and control process for the plurality of mechanical flow-limiting rings based on the temperature deviation value includes: If the absolute value of the first temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the first temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the first opening degree increment algorithm. If the first temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the second opening degree increment algorithm.

6. The outdoor unit liquid distribution control method according to claim 5, characterized in that, The step of using the control mode to perform temperature sampling processing on several temperature sensors to obtain corresponding temperature deviation values ​​also includes: When the control mode is the second control mode, the temperature sampling process is performed on several temperature sensors according to the second sampling period and the sampling frequency to obtain the corresponding branch temperature set. The second temperature value is obtained by averaging and filtering the temperature set of the branch pipe. The deviation values ​​of the second temperature are calculated and processed separately to obtain the corresponding second temperature deviation values.

7. The outdoor unit liquid distribution control method according to claim 6, characterized in that, The adjustment and control process for the plurality of mechanical flow-limiting rings based on the temperature deviation value further includes: If the absolute value of the second temperature deviation is less than or equal to the first temperature threshold, then the opening of the corresponding mechanical flow-limiting ring is kept constant. If the second temperature deviation value is greater than the first temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the third opening degree increment algorithm. If the second temperature deviation value is less than the second temperature threshold, the opening degree of the corresponding mechanical flow limiting ring is controlled according to the fourth opening degree increment algorithm.

8. An outdoor unit liquid distribution control system, characterized in that, The controller is used in an air conditioner. The controller is communicatively connected to the compressor, outdoor fan, several temperature sensors and several mechanical flow-limiting rings in the air conditioner. The temperature sensors and the mechanical flow-limiting rings are all installed in each liquid distribution branch pipe of the distributor in the air conditioner. The outdoor unit liquid distribution control system includes: The monitoring unit is used to perform real-time monitoring and processing of the compressor and the external fan in response to the start liquid dispensing command to obtain monitoring results. A mode confirmation unit is used to perform mode confirmation processing based on the monitoring results to obtain a control mode. A temperature sampling unit is used to perform temperature sampling processing on several temperature sensors using the control mode to obtain corresponding temperature deviation values. An adjustment and control unit is used to adjust and control several of the mechanical flow-limiting rings according to the temperature deviation value.

9. A computer device, characterized in that, The computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the outdoor unit liquid separation control method as described in any one of claims 1-7.

10. A storage medium, characterized in that, The storage medium stores a computer program, which includes program instructions that, when executed by a processor, can implement the outdoor unit liquid dispensing control method as described in any one of claims 1-7.

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