An optimization method for air conditioner chassis structure

Abstract

This application provides an optimization method for an air conditioner chassis structure, relating to the field of air conditioning technology, for reducing vibration noise generated by the air conditioner during operation. The method includes: establishing a finite element model based on the configuration parameters of components mounted on the air conditioner chassis in the air conditioning system and the configuration parameters of the air conditioner chassis; performing vibration modal simulation calculations on the air conditioner chassis based on the finite element model to obtain simulation results; adjusting the target parameters in the results parameters of the air conditioner chassis when the simulation results do not meet the air conditioner noise optimization target, and re-executing the above model establishment steps and simulation calculation steps based on the adjusted target parameters; wherein, the target parameters include at least one of the chassis sheet metal thickness, chassis pressing quantity, or chassis counterweight; and outputting the configuration parameters of the components and the air conditioner chassis corresponding to the simulation results when the simulation results meet the air conditioner noise optimization target.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an optimization method for an air conditioning chassis structure. Background Technology

[0002] With the development of the air conditioning industry and the continuous improvement of people's living standards, consumers have higher requirements for air conditioners in terms of noise, comfort, and appearance. However, during the operation of an air conditioner, the compressor or the intake and exhaust piping system often resonates with the chassis, resulting in increased overall vibration and noise, and a significant reduction in comfort.

[0003] In existing technologies, solutions often involve shielding the compressor's resonant frequency or altering the pipe shape. However, these solutions require extensive experimentation to validate the design, resulting in long design cycles and high product development costs. Summary of the Invention

[0004] This application provides an optimization method for the air conditioner chassis structure to reduce vibration and noise generated by the air conditioner during operation.

[0005] To achieve the above objectives, this application adopts the following technical solution.

[0006] In a first aspect, this application provides an optimization method for an air conditioner chassis structure. The method includes: a model establishment step: establishing a finite element model based on the configuration parameters of components installed on the air conditioner chassis in the air conditioning system and the configuration parameters of the air conditioner chassis; a simulation calculation step: performing vibration modal simulation calculations on the air conditioner chassis based on the finite element model to obtain simulation results; when the simulation results do not meet the air conditioner noise optimization target, adjusting the target parameters in the air conditioner chassis result parameters, and re-executing the above model establishment step and simulation calculation step based on the adjusted target parameters; wherein, the target parameters include at least one of the chassis sheet metal thickness, chassis forming quantity, or chassis counterweight; when the simulation results meet the air conditioner noise optimization target, outputting the configuration parameters of the components and the configuration parameters of the air conditioner chassis corresponding to the simulation results.

[0007] The technical solution provided in this application provides at least the following beneficial effects: First, vibration modal simulation calculations are performed using a finite element model established based on relevant parameters of the air conditioning system (such as the configuration parameters of the air conditioning chassis). This allows for the determination of whether the air conditioning chassis will generate resonance noise based on the simulation results. On one hand, if it is determined that the air conditioning chassis will generate resonance noise, at least one of the following can be adjusted continuously: the thickness of the chassis sheet metal, the number of chassis forming operations, or the chassis counterweight, to avoid resonance noise and improve user comfort when using the air conditioning product. On the other hand, the finite element model can be repeatedly established during the adjustment of target parameters, reducing design costs and improving design efficiency.

[0008] In some embodiments, the simulation results include the number of natural frequencies of the air conditioning chassis within the compressor operating frequency range, the number of natural frequencies of the air conditioning chassis within a preset frequency range, and the location of the maximum deformation of the total modal array of the air conditioning chassis, wherein the compressor operating frequency range is within the preset frequency range.

[0009] In some embodiments, the simulation results do not meet the air conditioning noise optimization target as follows: the number of natural frequencies of the air conditioning chassis within the compressor operating frequency range is greater than a first preset number; the number of natural frequencies of the air conditioning chassis within a preset frequency range is greater than a second preset number, and the second preset number is greater than the first preset number; the position of the compressor on the air conditioning chassis is the position of the maximum deformation of the modal array of the air conditioning chassis.

[0010] In some embodiments, the preset frequency range is [0Hz, 400Hz].

[0011] In some embodiments, the components include a compressor, a gas-liquid separator, an oil-liquid separator, and a suction and exhaust piping system.

[0012] In some embodiments, the order of adjustment of the target parameters is as follows: chassis sheet metal thickness, chassis forming quantity, and chassis counterweight.

[0013] In some embodiments, when the target parameter is the thickness of the chassis sheet metal, adjusting the target parameter in the result parameters of the air conditioning chassis includes: increasing the thickness of the chassis sheet metal; when the target parameter is the number of chassis forming processes, adjusting the target parameter in the result parameters of the air conditioning chassis includes: increasing the number of chassis forming processes; when the target parameter is the chassis counterweight, adjusting the target parameter in the result parameters of the air conditioning chassis includes: increasing the chassis counterweight.

[0014] Secondly, embodiments of this application provide an optimization device for an air conditioning chassis structure, which is used to execute the optimization method for an air conditioning chassis structure provided in the first aspect. This optimization device can be an electronic device with data processing capabilities, or a functional module within that electronic device.

[0015] Thirdly, embodiments of this application provide a controller, including: one or more memories; wherein the one or more memories are used to store computer program code, the computer program code including computer instructions.

[0016] Fourthly, embodiments of this application provide a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform any of the air conditioning chassis structure optimization methods provided in the first aspect.

[0017] Fifthly, embodiments of the present invention provide a computer program product that can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program product can realize any of the air conditioning chassis structure optimization methods provided in the first aspect.

[0018] It should be noted that the aforementioned computer instructions may be stored, in whole or in part, on a computer-readable storage medium. This computer-readable storage medium may be packaged together with the controller's processor, or it may be packaged separately from the controller's processor; this application does not impose any limitations on this.

[0019] The beneficial effects described in aspects two through five of this application can be referred to the analysis of the beneficial effects of aspect one, and will not be repeated here. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0021] Figure 1 An internal structural block diagram of an air conditioning system provided in an embodiment of this application;

[0022] Figure 2 A flowchart illustrating an optimization method for an air conditioning chassis structure provided in this application embodiment;

[0023] Figure 3 A schematic diagram of a finite element model of an air conditioning system provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the chassis structure of an air conditioning system provided in an embodiment of this application;

[0025] Figure 5 A schematic diagram of the chassis structure and counterweight of an air conditioning system provided in this application embodiment;

[0026] Figure 6 A logic block diagram for optimizing the structure of an air conditioning chassis provided in an embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the hardware structure of a controller provided in an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0032] During operation, air conditioning systems often experience resonance between the compressor and chassis, particularly in the intake and exhaust piping systems. This resonance leads to increased overall vibration and noise. Currently, the common approach to compressor-chassis resonance is to shield the compressor's resonant frequency. However, this requires installing shielding devices within the system, increasing design costs. Another approach is to modify the piping shape to address resonance between the intake and exhaust piping. However, this necessitates redesigning the intake and exhaust piping, extending the design cycle and increasing costs.

[0033] Based on this, this application provides an optimization method for air conditioner chassis structure. A finite element model is established based on the air conditioning system. Vibration modal simulation calculations are performed on the air conditioner chassis based on the finite element model to obtain simulation results. If the simulation results do not meet the air conditioning noise optimization target, at least one parameter among the following is adjusted: the sheet metal thickness of the air conditioner chassis, the number of chassis forming operations, or the chassis counterweight. Vibration modal simulation calculations are then performed again based on the adjusted air conditioner chassis until the air conditioning noise optimization target is met. Thus, this application, by performing modal analysis on the air conditioning system and continuously improving the chassis structure design based on the simulation results obtained from the modal analysis, can solve the resonance noise problem of the chassis during the air conditioner chassis design stage, thereby fundamentally improving the comfort of air conditioning products.

[0034] Figure 1 The diagram shown is an internal structural block diagram of an air conditioning system provided in this application according to an exemplary embodiment. The air conditioning system 100 includes a compressor 101, an air conditioning chassis 102, an intake pipe 103, an exhaust pipe 104, an oil separator 105, a gas-liquid separator 106, and a controller 107. Figure 1 (Not shown in the image).

[0035] It should be noted that the main components of the air conditioning system differ between different types of air conditioners. For ease of description, the following will use... Figure 1 The following is an example of the structural diagram of the air conditioning system 100 shown.

[0036] Compressor 101 is disposed between gas-liquid separator 106 and oil separator 105, and is used to compress the refrigerant delivered by gas-liquid separator 106 and deliver the compressed refrigerant to oil separator 105 via discharge pipe 104. Compressor 101 may be a variable capacity inverter compressor that performs inverter-based speed control.

[0037] The suction line 103 is connected to the gas-liquid separator 106 and is used to deliver refrigerant to the gas-liquid separator 106.

[0038] The exhaust pipe 104 is connected to the oil separator 105 and is used to deliver the refrigerant compressed by the compressor to the oil separator 105.

[0039] One end of the oil separator 105 is connected to the compressor 101 via the exhaust pipe 104, and the other end is connected to the outdoor heat exchanger. The oil separator 105 is used to separate the oil from the refrigerant mixture, and the oil separator 105 contains lubricating oil separated from the refrigerant mixture for a long time.

[0040] A gas-liquid separator 106 is disposed between the suction line 103 and the compressor 101. In the gas-liquid separator 106, the refrigerant flowing from the suction line 103 to the compressor 101 is separated into gaseous refrigerant and liquid refrigerant. Furthermore, gaseous refrigerant is mainly supplied from the gas-liquid separator 106 to the suction port of the compressor 101.

[0041] The air conditioner chassis 102 is used to house internal air conditioner components such as compressor 101, intake pipe 103, exhaust pipe 104, oil separator 105, and gas-liquid separator 106.

[0042] Controller 107 refers to a device that can generate operation control signals based on instruction opcodes and timing signals to instruct the air conditioning system to execute control commands. Exemplarily, the controller can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The controller can also be other devices with processing functions, such as circuits, devices, or software modules; this application embodiment does not impose any limitations on this.

[0043] This application also provides an optimization device for an air conditioning chassis structure (hereinafter referred to as the optimization device for ease of description), which is used to execute the above-described optimization method for an air conditioning chassis structure. The optimization device can be an electronic device with data processing capabilities, or a functional module within that electronic device; there is no limitation on this. For example, the electronic device can be a server, which can be a single server or a server cluster composed of multiple servers. Another example is that the electronic device can be a mobile phone, tablet computer, desktop computer, laptop computer, handheld computer, notebook computer, ultra-mobile personal computer (UMPC), netbook, as well as cellular phones, personal digital assistants (PDAs), augmented reality (AR) / virtual reality (VR) devices, and other terminal devices. This disclosure does not impose any special limitations on the specific form of the electronic device. The embodiments provided in this application will be specifically described below with reference to the accompanying drawings.

[0044] like Figure 2 As shown in the figure, this application provides a method for optimizing an air conditioning chassis structure, applied to the above-mentioned optimization device. The method includes the following steps:

[0045] S101. Model Establishment Steps: Based on the configuration parameters of the components installed on the air conditioning chassis in the air conditioning system and the configuration parameters of the air conditioning chassis, establish a finite element model.

[0046] The configuration parameters of the above-mentioned components include: the weight of the components, the center of gravity of the components, and the material properties of the components.

[0047] The aforementioned components include: a compressor, a gas-liquid separator, an oil-liquid separator, an intake pipe, and an exhaust pipe.

[0048] The configuration parameters of the air conditioning chassis mentioned above include: the weight of the air conditioning chassis, the center of gravity of the air conditioning chassis, and the material properties of the air conditioning chassis.

[0049] Furthermore, the aforementioned finite element model is established by simulating a real physical system using the finite element analysis method through an optimization device. In the embodiments of this application, a detailed modal vibration analysis can be performed on the designed structure based on the finite element model, thereby obtaining the actual structural vibration of the air conditioning system. Therefore, by establishing a finite element model and performing finite element analysis, various vibration problems can be evaluated during the design phase of the air conditioning system, and the design parameters can be adjusted based on these vibration problems.

[0050] Therefore, in this embodiment of the application, a finite element model can be established to perform vibration analysis on the air conditioning chassis, and the vibration analysis results can be used to optimize the design.

[0051] It should be noted that in actual implementation, in addition to the compressor, gas-liquid separator, oil separator, and intake / exhaust piping system, other components may also be included on the air conditioning chassis. On the one hand, the compressor, gas-liquid separator, oil separator, intake piping, and exhaust piping have a significant impact on the vibration of the air conditioning chassis. On the other hand, considering that the finite element model needs to be accurate and reliable, and also economical, the components selected for the finite element model provided in this application embodiment include: compressor, gas-liquid separator, oil separator, intake piping, and exhaust piping, thereby simplifying the finite element model.

[0052] For example, Figure 3 This application provides a schematic diagram of a finite element model of an air conditioning system according to an exemplary embodiment. For example... Figure 3 As shown, the finite element model 300 includes a compressor 301, an air conditioning chassis 302, an intake pipe 303, an exhaust pipe 304, an oil separator 305, and a gas-liquid separator 306.

[0053] In this model, constraints are imposed between components, such as... Figure 3As shown, the rubber feet of compressor 301 are connected to air conditioner chassis 302 and secured with sheet metal at the connection point. The feet of oil separator 305 are connected to air conditioner chassis 302 and secured with sheet metal at the connection point. The feet of gas-liquid separator 306 are connected to air conditioner chassis 302 and secured with sheet metal at the connection point. The air conditioner chassis 302 is secured with sheet metal around its perimeter.

[0054] S102. Simulation Calculation Steps: Based on the finite element model, perform vibration modal simulation calculations on the air conditioner chassis to obtain simulation results.

[0055] In some embodiments, based on the finite element model established above, vibration modal simulation calculations can be performed to obtain simulation results. Thus, based on the simulation results, it can be determined whether the air conditioner chassis will resonate under excitation and generate resonance noise.

[0056] In this context, excitation refers to an external force applied to a physical system. In the embodiments of this application, the excitation refers to the external force applied to the air conditioning chassis by the compressor or intake / exhaust pipes during the operation of the air conditioning system.

[0057] Resonance refers to the phenomenon where the amplitude of a physical system increases significantly when the frequency of the excitation applied to it is close to the system's natural frequency. In an air conditioning system, the compressor or the intake and exhaust pipes apply excitation to the air conditioning chassis. When this excitation frequency is close to the chassis's natural frequency, resonance occurs, generating resonance noise. The excitation frequency is the same as the compressor's operating frequency.

[0058] It should be noted that, in order to avoid resonance, the difference between the natural frequency of the air conditioner chassis and the operating frequency of the compressor or intake and exhaust pipes can be increased during the optimized design of the air conditioner chassis structure. The larger the difference, the less likely resonance will occur, and thus the less likely resonance noise will be generated.

[0059] Optionally, the above simulation results include the number of natural frequencies of the air conditioning chassis within the compressor's operating frequency range, the number of natural frequencies of the air conditioning chassis within a preset frequency range, and the location of the maximum deformation of the total modal array deformation of the air conditioning chassis.

[0060] Optionally, the operating frequency range of the compressor can be [25Hz, 120Hz]. It should be noted that the operating frequency range of the compressor involved in the embodiments of this application varies depending on the type of air conditioner, and this application does not limit it. [25Hz, 120Hz] is only one possible type of air conditioner.

[0061] Optionally, the preset frequency range is [0Hz, 400Hz], and the compressor operating frequency range is within this preset frequency range.

[0062] S103. If the simulation results do not meet the air conditioning noise optimization target, adjust the target parameters in the result parameters of the air conditioning chassis, and re-execute the above model establishment steps and simulation calculation steps based on the adjusted target parameters.

[0063] The target parameters include at least one of the following: chassis sheet metal thickness, chassis pressing quantity, or chassis counterweight.

[0064] In some embodiments, the judgment conditions for the above simulation results not meeting the air conditioning noise optimization target include: the number of natural frequencies of the air conditioning chassis within the compressor operating frequency range is greater than a first preset number; the number of natural frequencies of the air conditioning chassis within the preset frequency range is greater than a second preset number, and the second preset number is greater than the first preset number; the position of the compressor on the air conditioning chassis is the position of the maximum deformation of the modal array of the air conditioning chassis.

[0065] Optionally, the first preset quantity can be 3, the second preset quantity can be 15, the compressor operating frequency range can be [25Hz, 120Hz], and the preset frequency range can be [0Hz, 400Hz].

[0066] It should be noted that when the simulation results meet the above-mentioned judgment conditions that do not meet the air conditioning noise optimization target, the chassis of the air conditioning system will generate resonance noise with the compressor or intake and exhaust pipe system during operation.

[0067] In some embodiments, if the chassis simulation results meet the above-mentioned criteria for not meeting the air conditioning noise optimization target, the air conditioning chassis structure is determined to be unqualified. The target parameters in the air conditioning chassis results are then adjusted, and the above-mentioned model building steps and simulation calculation steps are re-executed based on the adjusted target parameters.

[0068] The parameters mentioned above include the thickness of the air conditioning chassis sheet metal, the number of chassis forming processes, and the chassis counterweight.

[0069] The target parameters that can be adjusted for the air conditioning chassis include at least one of the following: chassis sheet metal thickness, chassis pressing quantity, or chassis counterweight.

[0070] Optionally, you can adjust only one of the target parameters mentioned above. Alternatively, you can adjust any two of the target parameters, without any restriction on the order in which they are adjusted. Or, you can adjust all three of the target parameters, without any restriction on the order in which they are adjusted.

[0071] For example, the following describes the specific adjustment process by adjusting three of the target parameters mentioned above, namely, adjusting the sheet metal thickness of the air conditioning chassis, the number of chassis forming operations, and the chassis counterweight:

[0072] Specifically, based on the simulation results obtained from modal simulation calculations using the optimization device, the first step is to adjust any one of the following: chassis sheet metal thickness, chassis forming quantity, and chassis counterweight. For example, the chassis sheet metal thickness can be adjusted first. Therefore, after adjusting the chassis sheet metal thickness, the simulation results obtained based on the adjusted target parameters can be evaluated to determine whether the above-mentioned judgment conditions are met.

[0073] Furthermore, if the simulation results after the above adjustments do not meet the judgment conditions, that is, if the adjusted chassis structure is deemed qualified, the adjustment process ends.

[0074] Alternatively, if the adjusted simulation results meet the judgment criteria, meaning the adjusted chassis structure is deemed unqualified, then another parameter in the target parameters besides the chassis sheet metal thickness can be adjusted. For example, the number of chassis forming operations can be adjusted. Therefore, after adjusting the number of chassis forming operations, the simulation results obtained based on the adjusted target parameters can be used to determine whether the above judgment criteria are met.

[0075] Correspondingly, if the simulation results after the above adjustments do not meet the judgment conditions, that is, if the adjusted chassis structure is deemed qualified, the adjustment process ends.

[0076] Alternatively, if the simulation results after the above adjustments meet the judgment conditions, that is, if the adjusted chassis structure is determined to be unqualified, then the last item in the target parameters, namely the chassis counterweight, can be adjusted.

[0077] Optionally, the following details the adjustment process for chassis sheet metal thickness, chassis pressing quantity, and chassis counterweight:

[0078] (1) Chassis sheet metal thickness

[0079] Specifically, when the target parameter is the thickness of the chassis sheet metal, the target parameter in the result parameters of the air conditioning chassis is adjusted, including increasing the thickness of the chassis sheet metal.

[0080] It should be noted that, while keeping the number of chassis forming processes and chassis counterweight constant, an increase in chassis sheet metal thickness leads to an increase in the chassis's natural frequency. Consequently, in the simulation results obtained from modal simulation calculations based on the increased chassis sheet metal thickness, the difference between the chassis's natural frequency and the operating frequency of the compressor or intake / exhaust piping system increases. Therefore, the number of natural frequencies of the chassis within the [0Hz, 400Hz] frequency range decreases.

[0081] Therefore, increasing the thickness of the chassis sheet metal increases the likelihood that the simulation results will not meet the above judgment conditions, which reduces the possibility of resonance between the air conditioning chassis and the compressor or intake and exhaust pipe system, thereby reducing the possibility of resonance noise generated during the operation of the air conditioning system.

[0082] Therefore, if the air conditioning chassis is deemed unqualified, the aforementioned method of increasing the thickness of the chassis sheet metal can be adopted to reduce the possibility of resonance noise generated during the operation of the air conditioning system.

[0083] In some embodiments, after adjusting the thickness of the chassis sheet metal, a new finite element model is established based on the configuration parameters of the components installed on the air conditioning chassis in the air conditioning system and the configuration parameters of the air conditioning chassis. Based on the finite element model, modal simulation calculations are then performed on the air conditioning chassis to obtain simulation results.

[0084] Furthermore, based on the same judgment criteria, it can be determined whether the adjusted chassis simulation results meet the air conditioning noise optimization target.

[0085] In one possible scenario, if the simulation results after the above adjustments do not meet the judgment criteria, that is, if the adjusted chassis structure is determined to be qualified, the adjustment process ends.

[0086] In another possible scenario, if the above-mentioned adjusted simulation results meet the judgment conditions, that is, the adjusted chassis structure is determined to be unqualified.

[0087] Optionally, if the adjusted chassis structure is unqualified, it can be determined whether the adjusted chassis sheet metal thickness parameters are within the adjustment range of the air conditioning chassis sheet metal thickness.

[0088] Optionally, the adjustment range of the sheet metal thickness of the air conditioner chassis can be limited. This adjustment range can be determined based on the air conditioner product type, product weight, and economic considerations.

[0089] It should be noted that because the air conditioner chassis bears the weight of all the internal structures, the sheet metal thickness of the air conditioner chassis cannot be too thin. However, if the air conditioner chassis is too thick, it loses its economic efficiency. Therefore, when it is necessary to increase the thickness of the chassis sheet metal, the adjustment range of the air conditioner chassis sheet metal thickness can be limited.

[0090] If the adjusted chassis sheet metal thickness parameters are within the adjustment range of the air conditioning chassis sheet metal thickness, then readjust the air conditioning chassis sheet metal thickness parameters and repeat the above steps.

[0091] Alternatively, if the adjusted chassis sheet metal thickness parameters are not within the adjustment range for the air conditioning chassis sheet metal thickness, then further adjust other target parameters, such as the number of chassis forming operations.

[0092] (2) Number of chassis forming

[0093] Specifically, when the target parameter is the number of chassis moldings, the target parameter in the result parameters of the air conditioning chassis is adjusted, including increasing the number of chassis moldings.

[0094] It should be noted that, while keeping the chassis sheet metal thickness and chassis counterweight constant, an increase in chassis sheet metal thickness leads to an increase in the chassis's natural frequency. Consequently, in the simulation results obtained from modal simulation calculations based on the increased number of chassis forming operations, the difference between the chassis's natural frequency and the operating frequency of the compressor or intake / exhaust piping system increases, thus reducing the number of natural frequencies of the chassis within the [0Hz, 400Hz] frequency range.

[0095] Therefore, increasing the number of chassis moldings increases the likelihood that the simulation results will not meet the above judgment conditions, which reduces the possibility of resonance between the air conditioning chassis and the compressor or intake and exhaust pipe system, thereby reducing the possibility of resonance noise generated during the operation of the air conditioning system.

[0096] Therefore, if the air conditioning chassis is deemed unqualified, the above-mentioned method of increasing the number of chassis moldings can be adopted to reduce the possibility of resonance noise generated during the operation of the air conditioning system.

[0097] In some embodiments, after adjusting the number of chassis moldings, a new finite element model is established based on the configuration parameters of the components installed on the air conditioning chassis in the air conditioning system and the configuration parameters of the air conditioning chassis. Based on the finite element model, modal simulation calculations are then performed on the air conditioning chassis to obtain simulation results.

[0098] Furthermore, based on the same judgment criteria, it can be determined whether the adjusted chassis simulation results meet the air conditioning noise optimization target.

[0099] In one possible scenario, if the simulation results after the above adjustments do not meet the judgment criteria, that is, if the adjusted chassis structure is determined to be qualified, the adjustment process ends.

[0100] In another possible scenario, if the above-mentioned adjusted simulation results meet the judgment conditions, that is, the adjusted chassis structure is determined to be unqualified.

[0101] Optionally, if the adjusted chassis structure is unqualified, it can be determined whether the adjusted chassis molding quantity parameter is within the adjustment range of the air conditioning chassis molding quantity.

[0102] Optionally, the adjustment range for the number of air conditioner chassis forming can be limited. This adjustment range can be determined based on factors such as the internal space layout of the air conditioner and the mold forming processability.

[0103] It should be noted that the number of chassis moldings can meet the basic functional features, such as drainage channels and drainage holes for drainage and wiring holes for pipe routing.

[0104] If the adjusted chassis molding quantity parameter is within the adjustment range of the air conditioner chassis molding quantity, then readjust the air conditioner chassis molding quantity parameter and repeat the above steps.

[0105] Alternatively, if the adjusted chassis molding quantity parameters are not within the adjustment range for the air conditioning chassis molding quantity, then other target parameters should be further adjusted. For example, chassis counterweight.

[0106] Figure 4 The diagram shown is a schematic diagram of the chassis structure of an air conditioning system provided in accordance with an exemplary embodiment of this application.

[0107] Optionally, the shape of the air conditioner chassis can be specified. The shape of the chassis can be determined according to the size and functional requirements of the chassis.

[0108] Optionally, the arrangement of the air conditioner chassis molding can be specified. The chassis can be arranged along the length of the chassis or along the width of the chassis. This application does not limit this arrangement.

[0109] (3) Chassis counterweight

[0110] Specifically, when the target parameter is the chassis counterweight, the target parameter in the result parameters of the air conditioning chassis is adjusted, including increasing the chassis counterweight.

[0111] It should be noted that, while keeping the chassis sheet metal thickness and the number of chassis forming processes constant, an increase in the chassis counterweight mass leads to an increase in the chassis's natural frequency. Consequently, modal simulations based on the increased chassis counterweight mass show an increased difference between the chassis's natural frequency and the operating frequency of the compressor or intake / exhaust piping system. This results in a decrease in the number of natural frequencies of the chassis within the [0Hz, 400Hz] frequency range.

[0112] Therefore, increasing the thickness of the chassis sheet metal increases the likelihood that the simulation results will not meet the above judgment conditions, which reduces the possibility of resonance between the air conditioning chassis and the compressor or the intake and exhaust pipe system, thereby reducing the possibility of resonance noise generated during the operation of the air conditioning system.

[0113] Optionally, the chassis counterweight can be placed at the location of the maximum total deformation of the modal array of the air conditioning chassis.

[0114] It should be noted that placing the chassis counterweight at the location of maximum total deformation in the modal array of the air conditioning chassis has the greatest impact on the chassis's natural frequency and the best effect in reducing resonance noise. The farther the chassis counterweight is from the location of maximum total deformation in the chassis modal array, the smaller its impact on the chassis's natural frequency and the worse its effect on reducing resonance noise. Therefore, in addition to adding chassis counterweight, placing it at the location of maximum total deformation in the modal array of the air conditioning chassis can also reduce the possibility of resonance noise generated during the operation of the air conditioning system.

[0115] Optionally, if other components are placed at the location of the maximum total deformation of the air conditioning chassis's modal array, the chassis counterweight can be placed at a position on the chassis that allows the counterweight to be placed and is closest to the location of the maximum deformation. In some embodiments, after adjusting the chassis counterweight, a new finite element model is established based on the configuration parameters of the components installed on the air conditioning chassis in the air conditioning system and the configuration parameters of the air conditioning chassis. Based on the finite element model, modal simulation calculations are then performed on the air conditioning chassis again to obtain simulation results.

[0116] Furthermore, based on the same judgment criteria, it can be determined whether the adjusted chassis simulation results meet the air conditioning noise optimization target.

[0117] In one possible scenario, if the simulation results after the above adjustments do not meet the judgment criteria, that is, if the adjusted chassis structure is determined to be qualified, the adjustment process ends.

[0118] In another possible scenario, if the above-mentioned adjusted simulation results meet the judgment conditions, that is, the adjusted chassis structure is determined to be unqualified.

[0119] Optionally, if the adjusted chassis structure is unqualified, it can be determined whether the adjusted chassis counterweight parameters are within the adjustment range for the air conditioning chassis counterweight. Optionally, the adjustment range of the air conditioning chassis counterweight mass can be limited. This adjustment range is determined based on the strength of the air conditioning chassis structure.

[0120] Figure 5 The diagram shown is a schematic representation of the chassis structure and counterweight of an air conditioning system according to an exemplary embodiment of this application. The counterweight is connected to the chassis using screws.

[0121] Optionally, the shape of the air conditioner chassis counterweight can be defined. This shape is determined based on the actual space after all internal components are assembled into the air conditioner chassis. Optionally, the method for adjusting the mass of the air conditioner chassis counterweight can be defined. This adjustment method can be achieved by increasing the counterweight wall thickness. This application does not impose any limitations.

[0122] In some embodiments, when the simulation results meet the judgment conditions, in addition to the chassis sheet metal thickness, chassis pressing quantity, and chassis counterweight, the position of the compressor can also be adjusted.

[0123] Specifically, the compressor can be adjusted to a position on the chassis that allows it to be placed and is furthest from the location of the maximum deformation mentioned above.

[0124] It should be noted that if, during air conditioning system operation, the compressor applies excitation to the air conditioning chassis, performing positive work on the chassis, this will compensate for the energy loss generated during chassis vibration, causing the chassis to vibrate continuously at a constant amplitude, thus continuously generating vibration noise. Therefore, placing the compressor away from the location of maximum total deformation in the modal array of the air conditioning chassis reduces the likelihood of the compressor performing positive work on the chassis through excitation, thereby reducing the possibility of the compressor compensating for energy loss during chassis vibration and ultimately decreasing the likelihood of vibration noise generated during air conditioning system operation.

[0125] S104. When the simulation results meet the air conditioning noise optimization target, output the configuration parameters of the components and the configuration parameters of the air conditioning chassis corresponding to the simulation results.

[0126] In some embodiments, when the chassis simulation results meet the air conditioning noise optimization target, the air conditioning chassis structure is deemed qualified, and the weight, center of gravity position and material of the components in the simulation results, as well as the weight, center of gravity position and material of the air conditioning chassis, are output.

[0127] Optionally, if the chassis simulation results meet the air conditioning noise optimization target, the chassis sheet metal thickness parameters in the simulation results can also be output.

[0128] Optionally, when the chassis simulation results meet the air conditioning noise optimization target, the chassis counterweight mass parameters, chassis counterweight shape parameters, and chassis pressing arrangement parameters in the simulation results can also be output.

[0129] Optionally, when the chassis simulation results meet the air conditioning noise optimization target, the simulation results can also output the chassis forming quantity parameters, chassis forming shape parameters, and chassis counterweight position parameters.

[0130] Furthermore, the configuration parameters of the aforementioned components corresponding to the output simulation results guide the design of the air conditioner chassis structure, and this air conditioner chassis structure can solve the air conditioner vibration and noise problem.

[0131] based on Figure 2The embodiments shown in this application provide at least the following beneficial effects: First, a finite element model based on relevant parameters of the air conditioning system (such as the configuration parameters of the air conditioning chassis) is used to perform vibration modal simulation calculations. This allows for the determination of whether the air conditioning chassis will generate resonance noise based on the simulation results. On one hand, if it is determined that the air conditioning chassis will generate resonance noise, at least one of the following can be adjusted continuously: the thickness of the chassis sheet metal, the number of chassis forming operations, or the chassis counterweight, to avoid resonance noise and improve user comfort when using the air conditioning product. On the other hand, the finite element model can be repeatedly established during the adjustment of target parameters, reducing design costs and improving design efficiency.

[0132] The following is combined with, for example Figure 6 The logic diagram shown illustrates the complete process of air conditioning chassis structure optimization, using adjustments to chassis sheet metal thickness, chassis pressing quantity, and chassis counterweight as examples.

[0133] like Figure 6 As shown, the optimization process begins:

[0134] S1. Establish the finite element model of the air conditioning system.

[0135] Specifically, a finite element model can be established based on the configuration parameters of the components installed on the air conditioning chassis in the air conditioning system and the configuration parameters of the air conditioning chassis.

[0136] S2. Modal simulation calculations are performed based on the finite element model to obtain the modal simulation results.

[0137] Determine whether the simulation results meet the air conditioning noise optimization target.

[0138] If so, the air conditioning chassis structure optimization process is complete.

[0139] If not, proceed to step S3 below.

[0140] S3. Adjust the thickness of the chassis sheet metal.

[0141] S4. Based on the adjusted chassis sheet metal thickness, repeat steps S1 and S2.

[0142] We then reassess whether the simulation results meet the air conditioning noise optimization goals.

[0143] If so, the air conditioning chassis structure optimization process is complete.

[0144] If not, proceed to step S5 below.

[0145] S5. Adjust the number of chassis forming processes.

[0146] S6. Based on the adjusted chassis forming quantity, repeat steps S1 and S2.

[0147] We then reassess whether the simulation results meet the air conditioning noise optimization goals.

[0148] If so, the air conditioning chassis structure optimization process is complete.

[0149] If not, proceed to step S7 below.

[0150] S7. Adjust the chassis weight distribution.

[0151] S8. Based on the adjusted chassis weight, repeat steps S1 and S2.

[0152] We then reassess whether the simulation results meet the air conditioning noise optimization goals.

[0153] If so, the air conditioning chassis structure optimization process is complete.

[0154] If not, repeat steps S7-S8 until the air conditioning noise optimization target is met.

[0155] As can be seen, the above mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, the embodiments of this application provide corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, in conjunction with the modules and algorithm steps of the various examples described in the embodiments disclosed herein, the embodiments of this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0156] This application also provides a hardware structure diagram of a controller, such as... Figure 7 As shown, the controller 107 includes a processor 3001, and optionally, a memory 3002 and a communication interface 3003 connected to the processor 3001. The processor 3001, memory 3002 and communication interface 3003 are connected via a bus 3004.

[0157] Processor 3001 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. Processor 3001 may also be any other device with processing capabilities, such as a circuit, device, or software module. Processor 3001 may also include multiple CPUs, and processor 3001 may be a single-core processor or a multi-core processor. Here, "processor" may refer to one or more devices, circuits, or processing cores used to process data (e.g., computer program instructions).

[0158] The memory 3002 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or it may be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer. This application embodiment does not impose any limitations on this. The memory 3002 may exist independently or may be integrated with the processor 3001.

[0159] The communication interface 3003 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface 3003 can be a module, circuit, transceiver, or any device capable of enabling communication.

[0160] Bus 3004 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Bus 3004 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 7 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0161] This invention also provides a computer-readable storage medium including computer-executable instructions. When the computer-executable instructions are executed on the computer, the computer performs an optimization method for an air conditioning chassis structure as provided in the above embodiments.

[0162] This invention also provides a computer program product that can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program product can realize the optimization method for an air conditioning chassis structure provided in the above embodiments.

[0163] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in this invention can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium accessible to a general-purpose or special-purpose computer.

[0164] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0165] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and other division methods may exist in actual implementation. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate; components shown as units may be one physical unit or multiple physical units, i.e., they may be located in one place or distributed in multiple different places. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0166] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for optimizing an air conditioning chassis structure, characterized in that, The method includes: Model establishment steps: Based on the configuration parameters of the components installed on the air conditioning chassis in the air conditioning system and the configuration parameters of the air conditioning chassis, a finite element model is established; Simulation calculation steps: Based on the finite element model, perform vibration modal simulation calculations on the air conditioner chassis to obtain simulation results; When the simulation results do not meet the air conditioning noise optimization target, the target parameters in the result parameters of the air conditioning chassis are adjusted, and the above model building steps and simulation calculation steps are re-executed based on the adjusted target parameters; wherein, the target parameters include at least one of chassis sheet metal thickness, chassis forming quantity, or chassis counterweight; When the simulation results meet the air conditioner noise optimization target, output the configuration parameters of the components corresponding to the simulation results and the configuration parameters of the air conditioner chassis; The order of adjustment for the target parameters is as follows: chassis sheet metal thickness, chassis forming quantity, and chassis counterweight. When the target parameter is the thickness of the chassis sheet metal, the target parameter in the result parameter of adjusting the air conditioning chassis includes: increasing the thickness of the chassis sheet metal; When the target parameter is the number of chassis forming steps, the target parameter in the result parameter of adjusting the air conditioning chassis includes: increasing the number of chassis forming steps; When the target parameter is the chassis counterweight, the target parameter in the result parameter of adjusting the air conditioning chassis includes: increasing the chassis counterweight.

2. The method according to claim 1, characterized in that, The simulation results include the number of natural frequencies of the air conditioning chassis within the compressor's operating frequency range, the number of natural frequencies of the air conditioning chassis within a preset frequency range, the location of the maximum total deformation of the modal array of the air conditioning chassis, and the compressor's operating frequency range being within the preset frequency range.

3. The method according to claim 2, characterized in that, The simulation results do not meet the air conditioning noise optimization target in the following ways: The number of inherent frequencies of the air conditioning chassis within the compressor's operating frequency range is greater than the first preset number; The number of inherent frequencies of the air conditioning chassis within a preset frequency range is greater than a second preset number, and the second preset number is greater than the first preset number; The compressor is positioned on the air conditioner chassis at the location of the maximum total deformation of the modal array of the air conditioner chassis.

4. The method according to claim 2 or 3, characterized in that, The preset frequency range is [0Hz, 400Hz].

5. The method according to claim 1, characterized in that, The components include a compressor, a gas-liquid separator, an oil-liquid separator, and a suction and exhaust piping system.

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