Air conditioner pipeline stress analysis and adjustment method, device and air conditioner

Abstract

The invention discloses an air conditioner pipeline stress analysis and adjustment method, a device and an air conditioner, and relates to the technical field of pipeline stress adjustment. The invention performs spatial modeling on multiple pipe sections, analyzes pipeline spatial stress by using simulation technology, performs three-dimensional scanning on the pipeline spatial structure, and then performs three-dimensional correction, performs overstress analysis on the pipeline, and uses a system control incentive mechanism to control pipeline stress based on the judgment result of whether an inequality holds. The invention can analyze the pipeline spatial stress of the air conditioner in real time, and adjust the pipeline spatial stress by setting a system control incentive machine, so as to ensure that the pipeline stress of the air conditioner after after-sales installation is controlled in real time, thereby ensuring the stability of the whole machine operation performance under different working conditions and loads, and effectively avoiding the crack and leakage problems caused by stress concentration and management overstress in the air conditioner system pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline stress regulation, and in particular to an air conditioner pipeline stress analysis and regulation method, a device and an air conditioner. Background Art

[0002] As one of the indispensable household appliances in the daily life of modern residents, air conditioners have not only improved people's lives, but also achieved technological innovation. With the complexity of functions, modularization of appearance structure, and compactness of space volume, the pipeline space structure of air conditioners has become more and more complex, resulting in cracks and leaks in the space pipelines caused by vibration.

[0003] The prior art has circumvented this problem with the help of technical means such as ANSYS simulation when designing the whole machine pipeline. However, with the long-term operation of the whole machine, the oxidation of the pipeline outdoors, and the differences in relative positions during assembly and installation, the actual after-sales pipeline stress varies greatly, and pipeline vibration and breakage and refrigerant leakage are prone to occur, which directly affects the actual use of customers. Therefore, the present invention proposes an air conditioner pipeline stress analysis and adjustment method, device and air conditioner to address the deficiencies in the prior art. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide: an air conditioner pipeline stress analysis and adjustment method, applied to an air conditioner unit, comprising the following steps:

[0005] Split the pipeline into multiple segments, and then perform spatial modeling on the multiple segments;

[0006] When designing the pipeline space structure, use simulation technology to analyze the pipeline space stress, and determine whether to optimize the designed pipeline space structure based on the stress data of the analysis process;

[0007] After the pipeline spatial structure optimization is completed, the pipeline spatial structure is scanned in three dimensions and then corrected in three dimensions;

[0008] Correct the spatial function of a single pipe part and distinguish the function position definition of different pipe sections;

[0009] To conduct overstress analysis on the pipeline, firstly, the stress values ​​of multiple points on the pipeline are collected, and then curve fitting is performed on the collected stress values ​​to obtain the pipeline space stress fitting function, and then the allowable stress curve function is obtained based on the pipeline space stress fitting function;

[0010] Preset the floating allowable stress correction factor, and then assign the floating allowable stress correction factor to the allowable stress curve function;

[0011] Preset the safety threshold and judge whether the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is established;

[0012] The system control incentive mechanism is set, and then the system control incentive mechanism is used to control the pipeline stress based on the judgment result of whether the inequality is established.

[0013] Further improvement is that after spatial modeling of multiple pipe segments, the spatial function relationship of the multiple pipe segments is fitted as: f(x, y, z)=0, and the stress function relationship of the multiple pipe segments is fitted as: σ(x, y, z)=0.

[0014] Further improvement is: when performing three-dimensional correction, the origin of the xyz coordinate system is used as the reference point, and the initial Δx, Δy, and Δz are substituted and used as the vector transformation reference in the xyz direction respectively. Right now

[0015] Further improvement is: the pipeline space stress fitting function is: σ 管段n (x,y,z), the allowable stress curve function is:

[0016] The further improvement is that after the floating allowable stress correction factor is assigned to the allowable stress curve function, the new allowable stress curve function is:

[0017] Further improvements are as follows: when the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold holds true, the pipeline state is maintained; when the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold does not hold true, the system control incentive mechanism is triggered.

[0018] An air conditioner pipeline stress analysis and adjustment device, comprising a modeling unit, a pipeline space stress analysis module, a judgment module, a correction module, an overstress analysis module, a comparison module and a pipeline stress control module;

[0019] The modeling unit is used to perform spatial modeling on the split multiple pipe segments;

[0020] The pipeline space stress analysis module is used to analyze the pipeline space stress using simulation technology;

[0021] The judgment module is used to judge whether to optimize the designed pipeline space structure according to the stress data;

[0022] The correction module is used to correct the three-dimensional model of the pipeline space and perform spatial function correction on a single pipeline component;

[0023] The overstress analysis module is used to perform overstress analysis on the pipeline to obtain the pipeline spatial stress fitting function and the allowable stress curve function;

[0024] The comparison module is used to determine whether the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is established;

[0025] The pipeline stress control module is used to set a system control incentive mechanism, and use the system control incentive mechanism to perform corresponding pipeline stress control operations based on the judgment result of the comparison module.

[0026] An air conditioner comprises a computer-readable storage medium storing a computer program and a processor. When the computer program is read and executed by the processor, an air conditioner pipeline stress analysis and adjustment method is implemented.

[0027] The beneficial effects of the present invention are as follows: the method of the present invention can analyze the pipeline space stress of the air conditioner in real time, and adjust the pipeline space stress by setting the system control exciter, so as to ensure that the pipeline stress of the air conditioner after after-sales installation is controlled in real time, thereby ensuring the stability of the operating performance of the whole machine under different working conditions and loads, and effectively avoiding the cracking and leakage problems caused by the stress concentration and management over-stress of the air conditioner system pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of spatial modeling of multiple pipe segments of the present invention;

[0029] Figure 2 It is a schematic diagram of the pipeline space stress simulation analysis process of the present invention;

[0030] Figure 3 It is a flow chart of the pipeline function definition and correction method of the present invention;

[0031] Figure 4 It is a schematic diagram of the pipeline overstress analysis process of the present invention;

[0032] Figure 5 The figure is a schematic diagram of the excitation control flow of the system control excitation mechanism of the present invention. DETAILED DESCRIPTION

[0033] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0034] Embodiment 1

[0035] according to Figure 1-5 As shown, this embodiment proposes an air conditioner pipeline stress analysis and adjustment method, which is applied to an air conditioner unit and includes the following steps:

[0036] Split the pipeline into multiple segments, and then perform spatial modeling on the multiple segments;

[0037] When designing the pipeline space structure, use simulation technology to analyze the pipeline space stress, and determine whether to optimize the designed pipeline space structure based on the stress data of the analysis process;

[0038] After the pipeline spatial structure optimization is completed, the pipeline spatial structure is scanned in three dimensions and then corrected in three dimensions;

[0039] Correct the spatial function of a single pipe part and distinguish the function position definition of different pipe sections;

[0040] To conduct overstress analysis on the pipeline, firstly, the stress values ​​of multiple points on the pipeline are collected, and then curve fitting is performed on the collected stress values ​​to obtain the pipeline space stress fitting function, and then the allowable stress curve function is obtained based on the pipeline space stress fitting function;

[0041] Preset the floating allowable stress correction factor, and then assign the floating allowable stress correction factor to the allowable stress curve function;

[0042] Preset the safety threshold and judge whether the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is established;

[0043] The system control incentive mechanism is set, and then the system control incentive mechanism is used to control the pipeline stress based on the judgment result of whether the inequality is established.

[0044] The method of the present invention can analyze the pipeline space stress of the air conditioner in real time, and adjust the pipeline space stress by setting the system control exciter, so as to ensure that the pipeline stress of the air conditioner after after-sales installation is controlled in real time.

[0045] Embodiment 2

[0046] according to Figure 2 As shown, this embodiment proposes an air conditioner pipeline stress analysis and adjustment method, which uses simulation technology to analyze pipeline space stress, and determines whether to optimize the designed pipeline space structure based on the stress data of the analysis process, specifically:

[0047] 1-1. When designing the pipeline space structure, carry out technical simulation operations based on ANSYS to analyze the pipeline space stress;

[0048] 1-2. Pre-processing and assembly of pipelines;

[0049] 1-3. Assemble and weld the whole machine, and perform secondary pipeline debugging (secondary pipe adjustment);

[0050] 1-4. Perform operation inspection on the whole machine, analyze the stress data of the operation process, determine whether there is a concentration problem in the stress data, and evaluate whether the existing stress problem needs to be optimized. If optimization is required, readjust the pipeline and optimize it again; if optimization is not required, end the process, determine that the structural design of the whole machine is the optimal structure for simulation, and the design structure is reasonable, and enter the mass production process.

[0051] Embodiment 3

[0052] according to Figure 3 As shown, this embodiment proposes an air conditioner pipeline stress analysis and adjustment method, performs a three-dimensional scan on the pipeline spatial structure, and then performs a three-dimensional correction; then corrects the spatial function of a single pipeline component, and distinguishes the function position definition of different pipe sections, specifically:

[0053] 2-1. After the whole machine is installed, the relative position of the system pipeline space is scanned and entered to obtain a three-dimensional model, expressed as: f0(x, y, z). Then the air conditioner pipeline layout is split to form a segmented short circuit of a single-valued function relationship in space, and the pipe segments are defined and named as pipe segment 1, pipe segment 2, pipe segment 3... pipe segment n ;

[0054] 2-2. Establish the spatial coordinate system position and fit the spatial function relationship of pipe segment n f(x, y, z) = 0;

[0055] 2-3. Arrange multiple stress collection points 1, 2, 3...m on the whole pipeline. The spatial position function of multiple stress collection points is expressed as: f 管段n (x m ,y m ,z m ), the collected stress data is expressed as: σ 管段n (x m ,y m ,z m );

[0056] 2-4. Combined with the pipeline function definition in 2-1, for the deviations in the installation and assembly process, the origin of the xyz coordinate system is used as the reference point to correct the three-dimensional parameters, and the initial Δx, Δy, and Δz are substituted to obtain: x = x + Δx, y = y + Δy, z = z + Δz, and these are used as the vector transformation references in the xyz direction respectively. Right now

[0057] 2-5. Split and establish a three-dimensional function of a single pipeline, f 管段1 (x,y,z),f 管段2 (x,y,z),f 管段3 (x,y,z)......f 管段n(x, y, z), and then correct the spatial function of a single pipe component and distinguish the function position definitions of different pipe sections, such as: pipe section 1 = exhaust pipe, pipe section 2 = intake pipe, etc.

[0058] Embodiment 4

[0059] according to Figure 4 As shown, this embodiment proposes an air conditioner pipeline stress analysis and adjustment method, performs overstress analysis on the pipeline, first collects stress values ​​of multiple positions on the pipeline, then performs curve fitting on the collected stress values ​​to obtain a pipeline space stress fitting function, and then obtains an allowable stress curve function based on the pipeline space stress fitting function;

[0060] Preset the floating allowable stress correction factor, and then assign the floating allowable stress correction factor to the allowable stress curve function;

[0061] Preset the safety threshold and judge whether the inequality: allowable stress curve - pipeline space stress fitting function > safety threshold is established;

[0062] Specifically:

[0063] 3-1. When the whole machine starts, refresh the three-dimensional function f(x, y, z) and rebuild the coordinates of the whole machine;

[0064] 3-2. The timer starts, the initial value is t = 0, and the stress values ​​of each position point are collected according to the definition of the pipeline section, that is: at the measuring point f 管段n The stress σ at (x, y, z) is recorded as σ 1、 σ2σ3……σ n ;

[0065] 3-3. On the pipe section n, curve fitting is performed on the collected stress σ to obtain the pipeline space stress fitting function σ 管段n (x,y,z);

[0066] 3-4. Combining the structure of the air conditioner copper tube with the inherent properties of the product, fitting the allowable stress curve function

[0067]

[0068] 3-5. After the installation of the whole machine, due to the oxidation of copper pipes in the air and the differences in pipeline structures, for different pipe sections, combined with local historical hydrological conditions, comprehensive parameters such as temperature, humidity, and air pH, the floating allowable stress correction factor γ is preset and assigned to the floating allowable stress correction factor γ. The new allowable stress curve function is: At this time, the allowable stress at each point on the pipe section n is corrected by real-time parameters, which is more in line with the stress limit evaluation applied to the actual pipeline;

[0069] 3-6. Preset the safety threshold M as the stress safety factor (the quotient of the difference between the allowable stress and the actual stress mean and M is rounded to represent the safety level performance of each part of the pipeline);

[0070] 3-7. The electronic control centralized system judges whether the inequality: allowable stress curve - pipeline space stress fitting function > safety threshold is established, that is: judge whether whether it is established;

[0071] 3-8. When If it is established, the whole machine continues to run, and t+1 is assigned to t, that is, t=t+1, and then continue the operation of step 3-3;

[0072] 3-9. If If it is not established, the electronic control centralized system will intervene and use the set system control incentive mechanism to perform control incentives, and then perform steps 3-6 and 3-7 again.

[0073] 3-10. When the user shuts down the machine, the timer of the centralized electric control system is reset.

[0074] Embodiment 5

[0075] according to Figure 5 As shown, this embodiment proposes an air conditioner pipeline stress analysis and adjustment method, sets a system control incentive mechanism, and then uses the system control incentive mechanism to control the pipeline stress based on the judgment result of whether the inequality is established, specifically:

[0076] 4-1. Combine the information data feedback in 3-9 and start the associated system control incentive trigger;

[0077] 4-2. Calculation And assign it to Δ n ,Right now:

[0078]

[0079] 4-3, assign 1 to n, that is, n = 1;

[0080] 4-4, assign 0 to t, that is, t = 0;

[0081] 4-5. Determine the inequality Δ n > 0 is true;

[0082] 4-6, when Δ n >0 does not hold, then assign t1+1 to t1, that is, t1=t1+1;

[0083] 4-7. Determine the inequality Δ again n > 0 is true;

[0084] 4-8. When Δ n >0 is still not true, the whole machine will be shut down, the system stress fault will be displayed, the fault location area will be output, and manual maintenance or optimization of pipeline stress reduction will be prompted. The corresponding overstress position f(x1,y1,z1) or x / y / z in the function f will be output. 管段n The value range of (x, y, z) is x∈[m1,n1], y∈[m2,n2], z∈[m3,n3];

[0085] 4-9. When Δ n >0 is true, then output when the inequality in 4-5 is true;

[0086] 4-10, assign 0 to t1, that is, t1 = 0;

[0087] 4-11. Determine the inequality Δ n - Whether M>0 holds;

[0088] 4-12. If the inequality in 4-11 holds, assign t+1 to t, that is, t=t+1; continue with the steps in 4-2;

[0089] 4-13. If the inequality in 4-11 does not hold, start the whole machine control and perform the following steps:

[0090] 4-14. Adjust the compressor frequency. The frequency adjustment amplitude is Δf. Δf is the product of a positive real number and a floating factor β of the comprehensive compressor performance, usage time, and the hydrological system of the installation area;

[0091] 4-15. Assign f-Δf to f, that is, f=f-Δf;

[0092] 4-16. Adjust the opening degree P of the electronic expansion valve, and the adjustment range is ΔP. ​​ΔP is the product of a real number and a floating factor θ of the comprehensive electronic expansion valve performance, usage time, and hydrological system of the installation area, where the value of θ can be positive or negative;

[0093] 4-17, assign P-ΔP to P, that is, P = P-ΔP;

[0094] 4-18. Determine again whether the inequality in 4-11 is true;

[0095] 4-19. Repeat steps 4-12 and subsequent steps.

[0096] By setting the system control exciter to adjust the pipeline space stress, it can ensure that the air conditioner pipeline stress is controlled in real time after after-sales installation, ensuring the stability of the whole machine's operating performance under different working conditions and loads, and effectively avoiding the air conditioner system pipeline stress concentration and management over-stress caused by cracks and leakage problems.

[0097] Embodiment 6

[0098] An air conditioner pipeline stress analysis and adjustment device, comprising a modeling unit, a pipeline space stress analysis module, a judgment module, a correction module, an overstress analysis module, a comparison module and a pipeline stress control module;

[0099] The modeling unit is used to perform spatial modeling on the split multiple pipe segments;

[0100] The pipeline space stress analysis module is used to analyze the pipeline space stress using simulation technology;

[0101] The judgment module is used to judge whether to optimize the designed pipeline space structure according to the stress data;

[0102] The correction module is used to correct the three-dimensional model of the pipeline space and perform spatial function correction on a single pipeline component;

[0103] The overstress analysis module is used to perform overstress analysis on the pipeline to obtain the pipeline spatial stress fitting function and the allowable stress curve function;

[0104] The comparison module is used to determine whether the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is established;

[0105] The pipeline stress control module is used to set a system control incentive mechanism, and use the system control incentive mechanism to perform corresponding pipeline stress control operations based on the judgment result of the comparison module.

[0106] Embodiment 7

[0107] An air conditioner comprises a computer-readable storage medium storing a computer program and a processor. When the computer program is read and executed by the processor, an air conditioner pipeline stress analysis and adjustment method is implemented.

[0108] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An air conditioner pipeline stress analysis and adjustment method, characterized in that: Application to air conditioning units, including the following steps: Split the pipeline into multiple segments, and then perform spatial modeling on the multiple segments; When designing the pipeline space structure, use simulation technology to analyze the pipeline space stress, and determine whether to optimize the designed pipeline space structure based on the stress data of the analysis process; After the pipeline spatial structure optimization is completed, the pipeline spatial structure is scanned in three dimensions and then corrected in three dimensions; Correct the spatial function of a single pipe part and distinguish the function position definition of different pipe sections; To conduct overstress analysis on the pipeline, firstly, the stress values ​​of multiple points on the pipeline are collected, and then curve fitting is performed on the collected stress values ​​to obtain the pipeline space stress fitting function, and then the allowable stress curve function is obtained based on the pipeline space stress fitting function; Preset the floating allowable stress correction factor, and then assign the floating allowable stress correction factor to the allowable stress curve function; Preset the safety threshold and judge whether the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is established; Set up a system control incentive mechanism, and then use the system control incentive mechanism to control pipeline stress based on the judgment result of whether the inequality is established; System control incentive mechanisms include: Determine whether the inequality: allowable stress curve function - pipeline space stress fitting function>0 holds true; When the inequality: allowable stress curve function - pipeline space stress fitting function>0 is established, then determine whether the inequality: allowable stress curve function - pipeline space stress fitting function>safety threshold is established; when the inequality: allowable stress curve function - pipeline space stress fitting function>safety threshold is established, then maintain the pipeline state; when the inequality: allowable stress curve function - pipeline space stress fitting function>safety threshold is not established, then adjust the compressor frequency and the opening of the electronic expansion valve, and determine again whether the inequality: allowable stress curve function - pipeline space stress fitting function>safety threshold is established; When the inequality: allowable stress curve function - pipeline space stress fitting function>0 is not established, the whole machine control will shut down and display system stress fault.

2. The air conditioner pipeline stress analysis and adjustment method according to claim 1, characterized in that: After spatial modeling of multiple pipe segments, the spatial function relationship of the multiple pipe segments is fitted as: f(x, y, z) = 0, and the stress function relationship of the multiple pipe segments is fitted as: σ(x, y, z) = 0.

3. The air conditioner pipeline stress analysis and adjustment method according to claim 1, characterized in that: When performing three-dimensional correction, the origin of the xyz coordinate system is used as the reference point, and the initial Δx, Δy, and Δz are substituted and used as the vector transformation basis in the xyz direction respectively. Right now 4. The air conditioner pipeline stress analysis and adjustment method according to claim 1, characterized in that: The fitting function of pipeline space stress is: 管段n (x,y,z), the allowable stress curve function is:

5. The air conditioner pipeline stress analysis and adjustment method according to claim 1, characterized in that: The new allowable stress curve function obtained by assigning the floating allowable stress correction factor to the allowable stress curve function is:

6. The air conditioner pipeline stress analysis and adjustment method according to claim 1, characterized in that: When the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is established, the pipeline state is maintained; when the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is not established, the system control incentive mechanism is triggered.

7. Air conditioner pipeline stress analysis and adjustment device, characterized in that: Used to implement the air conditioner pipeline stress analysis and adjustment method as described in any one of claims 1 to 6, comprising a modeling unit, a pipeline space stress analysis module, a judgment module, a correction module, an overstress analysis module, a comparison module and a pipeline stress control module; The modeling unit is used to perform spatial modeling on the split multiple pipe segments; The pipeline space stress analysis module is used to analyze the pipeline space stress using simulation technology; The judgment module is used to judge whether to optimize the designed pipeline space structure according to the stress data; The correction module is used to correct the three-dimensional model of the pipeline space and perform spatial function correction on a single pipeline component; The overstress analysis module is used to perform overstress analysis on the pipeline to obtain the pipeline spatial stress fitting function and the allowable stress curve function; The comparison module is used to determine whether the inequality: allowable stress curve function - pipeline space stress fitting function > safety threshold is established; The pipeline stress control module is used to set a system control incentive mechanism, and use the system control incentive mechanism to perform corresponding pipeline stress control operations based on the judgment result of the comparison module.

8. An air conditioner, characterized in that: It comprises a computer-readable storage medium storing a computer program and a processor, and when the computer program is read and executed by the processor, the air conditioner pipeline stress analysis and adjustment method as described in any one of claims 1 to 6 is implemented.

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