Foot pad selection method and air conditioner

Abstract

The application provides a foot pad selection method and an air conditioner. The foot pad selection method comprises the following steps: selecting a foot pad meeting a static test deformation condition; obtaining a dynamic actual deformation amount of the foot pad in a transportation or running test process; judging whether a maximum value of the dynamic actual deformation amount is located in a dynamic preset deformation amount interval; if not, the foot pad is reselected; if yes, and the dynamic preset deformation condition is met, the current foot pad meets the requirement, and the test is ended. The method does not need to know the parameter change of other objects, does not need to indirectly judge through the destructive parameters of other objects, the test parameter is single, the test method is direct, the test result is accurate, and the operation is simple and easy to implement.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more specifically, to a method for selecting a foot pad and an air conditioner. Background Technology

[0002] Compressor foot pads are generally made of rubber and have a certain degree of hardness. During the transportation of the compressor, the foot pads can absorb the compressor's vibration energy through compression deformation, thereby reducing / mitigating the compressor's overall vibration and noise, and minimizing stress concentration in the compressor's piping. Simultaneously, the foot pads' hardness prevents significant displacement of the piping due to shaking, which could cause it to crack. If the foot pads are too soft (more easily compressed), although they absorb compressor vibration energy more easily, the piping may shift significantly during transportation due to compressor movement, potentially cracking the piping. If the foot pads are too hard (more difficult to compress and deform), they do not absorb compressor operating energy well, easily causing stress concentration in the piping. When the stress is too high, vibration can be easily transmitted to the compressor's sheet metal, resulting in increased compressor noise and vibration, affecting the user experience. Therefore, only foot pads with appropriate hardness can absorb the compressor's vibration energy during transportation, reducing unit vibration, noise, and piping stress, while preventing significant deformation during transportation, thus avoiding piping cracking and ensuring reliability.

[0003] Currently, the selection of floor mats is usually done through compressor whole-machine tests (drop tests, simulated transportation), and the floor mats are indirectly judged based on the changes in multiple parameters such as the stress on the compressor's pipelines and destructive deformation. However, there are many test parameters, the test method is not direct, the test results are inaccurate, and it can only qualitatively determine whether the floor mats meet the requirements, but cannot specifically understand the reasons why the floor mats do not meet the requirements. Summary of the Invention

[0004] This invention provides a method for selecting floor mats and an air conditioner, which can solve at least one of the above-mentioned technical problems.

[0005] This invention provides a method for selecting floor mats, the method comprising the following steps:

[0006] Select foot pads that meet the deformation conditions for static testing;

[0007] The dynamic actual deformation of the foot pad during the transportation test was obtained;

[0008] Determine whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range. If not, reselect the foot pad. If yes, and the preset dynamic deformation condition is met, the current foot pad meets the requirements, and the test ends.

[0009] Compared with existing technologies, the floor mat selection method provided in this embodiment of the invention involves conducting transportation tests on floor mats that meet the static deformation test conditions. The method determines whether to reselect a floor mat by judging whether the maximum value of the actual dynamic deformation during the transportation test meets the requirements of the preset dynamic deformation range. If the maximum value of the actual dynamic deformation is not within the preset dynamic deformation range, the floor mat does not meet the quality requirements, and a new floor mat is selected for testing. Only when the maximum value of the actual dynamic deformation is within the preset dynamic deformation range and meets the preset dynamic deformation conditions is the current floor mat deemed to meet the requirements, and the test ends. Therefore, in this embodiment of the invention, the maximum value of the actual deformation of the floor mat after being compressed during the test directly determines whether the floor mat meets the requirements. There is no need to indirectly determine whether the floor mat meets the requirements by judging the changing characteristics of other objects. In short, the floor mat selection method provided in this embodiment of the invention directly determines whether the floor mat meets the requirements based solely on its own deformation during the test. That is, there is no need to know the parameter changes of other objects or to indirectly judge based on the destructive parameters of other objects. The test parameters are singular, the test method is direct, the test results are accurate, and the operation is simple and easy. Furthermore, in the prior art, the performance of the floor mat can only be qualitatively determined by the changing characteristics of other objects, but the specific reasons why the floor mat meets or does not meet the requirements cannot be understood. In the embodiments of the present invention, the reasons why the floor mat meets the requirements (e.g., the amount of deformation is appropriate and the softness and hardness are moderate) or the specific reasons why it does not meet the requirements (e.g., the amount of deformation is too large and it is too soft, or the amount of deformation is too small and it is too hard) can be directly and quantitatively understood by the deformation of the floor mat itself.

[0010] Optionally, selecting a foot pad that meets the static test deformation conditions includes the following steps:

[0011] Obtain the actual static deformation of the foot pad under test after a preset static test duration under pressure;

[0012] Determine whether the actual static deformation is within the preset static deformation range. If yes, the foot pad meets the static deformation condition; otherwise, the foot pad does not meet the static deformation condition, and a new foot pad is selected.

[0013] This setup allows for a preliminary assessment of whether the deformation of the floor mats meets the requirements. Mats that clearly do not meet the requirements are directly discarded, and new mats are selected without further testing. This targeted approach allows for more precise testing of the floor mats. Compared to existing technologies that directly simulate transportation tests, this method saves time and resources by eliminating the need to test mats that clearly do not meet the requirements. In short, this step can quickly and preliminarily identify and eliminate floor mats that do not meet the static deformation conditions, avoiding repeated testing and conserving resources.

[0014] Optionally, the static preset deformation range is: greater than or equal to the lower preset static deformation and less than or equal to the upper preset static deformation.

[0015] The step of determining whether the actual static deformation is within the preset static deformation range, and if not, indicating that the foot pad does not meet the static deformation condition and a new foot pad is selected, includes the following steps:

[0016] If the actual static deformation is greater than the upper limit preset static deformation, then the absolute value of the upper limit difference between the actual static deformation and the upper limit preset static deformation is calculated. Based on the upper limit difference, a foot pad with a higher hardness level is selected to continue testing. The larger the upper limit difference, the higher the hardness level of the foot pad is selected.

[0017] If the actual static deformation is less than the lower limit preset static deformation, then the absolute value of the lower limit difference between the actual static deformation and the lower limit preset static deformation is calculated. Based on the absolute value of the lower limit difference, a foot pad with a lower hardness level is selected to continue testing. The larger the absolute value of the lower limit difference, the lower the hardness level of the foot pad is selected.

[0018] This setup allows for the targeted and rapid reselection of appropriate hardness levels for the floor mats. In other words, this step can predict the deformation of the floor mats and select the hardness level of the floor mats step by step based on the prediction results. This allows for precise determination of the hardness level of the floor mats to be reselected, making the floor mat selection more accurate and faster, and saving time in the floor mat selection process.

[0019] Optionally, selecting a footpad with a higher hardness level than the current one based on the absolute value of the upper limit difference to continue testing includes the following steps:

[0020] If the absolute value of the upper limit difference is less than or equal to the first upper limit preset difference, the hardness of the reselected foot pad is increased by the first level;

[0021] If the absolute value of the upper limit difference is greater than the first upper limit preset difference and less than or equal to the second upper limit preset difference, then the hardness of the reselected foot pad will be increased by the second level.

[0022] If the absolute value of the upper limit difference is greater than the second upper limit preset difference, the hardness of the reselected foot pad will be increased by a third level;

[0023] Wherein, the first upper limit preset difference is less than the second upper limit preset difference is less than the upper limit preset static deformation amount, and the first level is less than the second level is less than the third level.

[0024] This setup allows for step-by-step prediction of the deformation of the floor mats and step-by-step selection of the floor mat hardness level based on the prediction results. This enables precise determination of the new floor mat hardness level, making the floor mat selection more accurate and faster, and saving time in floor mat selection.

[0025] Optionally, the step of selecting a footpad with a lower hardness level than the current one based on the absolute value of the lower limit difference to continue testing includes the following steps:

[0026] If the absolute value of the lower limit difference is less than or equal to the first lower limit preset difference, the hardness of the reselected foot pad is reduced by the first level;

[0027] If the absolute value of the lower limit difference is greater than the first lower limit preset difference and less than or equal to the second lower limit preset difference, then the hardness of the reselected foot pad is reduced by the second level.

[0028] If the absolute value of the lower limit difference is greater than the second lower limit preset difference, the hardness of the reselected foot pad will be reduced by a third level.

[0029] Wherein, the first lower limit preset difference is less than the second lower limit preset difference is less than the lower limit preset static deformation amount, and the first level is less than the second level is less than the third level.

[0030] This setup allows for step-by-step prediction of the deformation of the floor mats and step-by-step selection of the floor mat hardness level based on the prediction results. This enables precise determination of the new floor mat hardness level, making the floor mat selection more accurate and faster, and saving time in floor mat selection.

[0031] Optionally, the dynamic actual deformation is the dynamic actual deformation over a preset duration of the transportation test; the dynamic preset deformation range is: greater than or equal to the lower limit of the dynamic preset deformation and less than or equal to the upper limit of the dynamic preset deformation.

[0032] The step of determining whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and if not, reselecting the foot pad, includes the following steps:

[0033] If the maximum value of the actual dynamic deformation is greater than or equal to the upper limit of the preset dynamic deformation, then the ratio between the maximum value of the actual dynamic deformation and the upper limit of the preset dynamic deformation is calculated to obtain the upper limit quotient. Based on the upper limit quotient, a foot pad with a higher hardness level than the current hardness level is selected for further testing. The larger the upper limit quotient, the higher the hardness level of the foot pad is selected.

[0034] If the maximum value of the actual dynamic deformation is less than or equal to the lower limit of the preset dynamic deformation, the ratio between the maximum value of the actual dynamic deformation and the lower limit of the preset dynamic deformation is calculated to obtain the lower limit quotient. Based on the lower limit quotient, a foot pad with a lower hardness level is selected to continue testing. The smaller the lower limit quotient, the lower the hardness level of the foot pad is selected.

[0035] With this setup, the reasons why the floor mats do not meet the requirements are already understood before the floor mats are reselected. This allows for a targeted and quick reselection of floor mats with the appropriate hardness level. In other words, this step can predict the deformation of the floor mats and select the floor mat hardness level step by step based on the prediction results. This allows for a precise determination of the hardness level of the floor mats to be reselected, making the floor mat selection more accurate and faster, and saving time in the floor mat selection process.

[0036] Optionally, selecting a footpad with a higher hardness level than the current one based on the upper limit quotient to continue testing includes the following steps:

[0037] If the upper limit quotient is less than or equal to the first upper limit preset ratio, the hardness of the reselected foot pad is increased by the first level;

[0038] If the upper limit quotient is greater than the first upper limit preset ratio and less than or equal to the second upper limit preset ratio, the hardness of the reselected foot pad is increased by a second level;

[0039] If the upper limit quotient is greater than the second upper limit preset ratio, the hardness of the reselected foot pad will be increased by a third level;

[0040] Among them, the first level is less than the second level, which is less than the third level.

[0041] This setup allows for step-by-step prediction of the deformation of the floor mats and step-by-step selection of the floor mat hardness level based on the prediction results. This enables precise determination of the new floor mat hardness level, making the floor mat selection more accurate and faster, and saving time in floor mat selection.

[0042] Optionally, selecting a footpad with a lower hardness level than the current one for further testing based on the lower limit quotient includes the following steps:

[0043] If the lower limit quotient is less than or equal to 1 and greater than the first lower limit preset ratio, the hardness of the reselected foot pad is reduced by the first level.

[0044] If the lower limit quotient is less than or equal to the first lower limit preset ratio and greater than the second lower limit preset ratio, the hardness of the reselected foot pad is reduced by a second level.

[0045] If the upper limit quotient is less than or equal to the second lower limit preset ratio, the hardness of the reselected foot pad is reduced by a third level;

[0046] Among them, the first level is less than the second level, which is less than the third level.

[0047] This setup allows for step-by-step prediction of the deformation of the floor mats and step-by-step selection of the floor mat hardness level based on the prediction results. This enables precise determination of the new floor mat hardness level, making the floor mat selection more accurate and faster, and saving time in floor mat selection.

[0048] Optionally, the dynamic actual deformation is the dynamic actual deformation over a preset duration of the transportation test; the dynamic preset deformation range is: greater than or equal to the lower limit of the dynamic preset deformation and less than or equal to the upper limit of the dynamic preset deformation.

[0049] The step of determining whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and if so, and if the preset dynamic deformation condition is met, then the current foot pad meets the requirements and the test ends; includes the following steps:

[0050] Determine whether the maximum value of the dynamic actual deformation is within the dynamic preset deformation range, and whether the maximum value of the dynamic actual deformation is greater than or equal to the preset fatigue deformation. If so, obtain the total number of deformations during the foot pad transportation test and the number of excessive deformations where the dynamic actual deformation is greater than or equal to the preset fatigue deformation. Wherein, the preset fatigue deformation is less than the upper limit dynamic preset deformation and greater than the lower limit dynamic preset deformation.

[0051] Calculate the ratio of the number of excessive deformations to the total number of deformations;

[0052] Determine whether the ratio of the number of deformations is greater than or equal to a preset ratio. If so, select a foot pad with a higher hardness level than the current one. The higher the ratio of the number of deformations, the higher the hardness level of the selected foot pad. If not, the current foot pad meets the requirements, and the test ends.

[0053] This design takes into account the fatigue resistance during the deformation process of the foot pad, allowing for a more accurate understanding of its deformation characteristics, specifically its elastic deformation characteristics. Specifically, when the foot pad's deformation not only meets the dynamic preset deformation range requirement but also the preset fatigue deformation requirement, it indicates that the foot pad not only meets the basic deformation requirements but also the fatigue resistance requirements. Otherwise, if the foot pad meets the dynamic preset deformation range requirement but not the preset fatigue deformation requirement, it means that although the foot pad meets the basic deformation requirements, its fatigue resistance is weak, and its effective service life is short.

[0054] Optionally, the dynamic actual deformation is the dynamic actual deformation over a preset duration of the transportation test; the dynamic preset deformation range is: greater than or equal to the lower limit of the dynamic preset deformation and less than or equal to the upper limit of the dynamic preset deformation.

[0055] The step of determining whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and if so, and if the preset dynamic deformation condition is met, then the current foot pad meets the requirements and the test ends; includes the following steps:

[0056] Determine whether the maximum value of the dynamic actual deformation is within the dynamic preset deformation range, and whether the maximum value of the dynamic actual deformation is less than the preset fatigue deformation. If so, the current foot pad meets the requirements, and the test ends. The preset fatigue deformation is less than the upper limit dynamic preset deformation and greater than the lower limit dynamic preset deformation.

[0057] This design takes into account the fatigue resistance during the deformation process of the foot pad, allowing for a more accurate understanding of its deformation characteristics, specifically its elastic deformation characteristics. Specifically, when the foot pad's deformation not only meets the dynamic preset deformation range requirement but also the preset fatigue deformation requirement, it indicates that the foot pad not only meets the basic deformation requirements but also the fatigue resistance requirements. Otherwise, if the foot pad meets the dynamic preset deformation range requirement but not the preset fatigue deformation requirement, it means that although the foot pad meets the basic deformation requirements, its fatigue resistance is weak, and its effective service life is short.

[0058] Optionally, an upper electrode is provided on the upper surface of the foot pad, and a lower electrode is provided on the lower surface of the foot pad. The method further includes:

[0059] Detect the potential difference between the upper electrode and the lower electrode;

[0060] The actual deformation of the foot pad is obtained based on the change in the potential difference.

[0061] This setup allows for a quick and direct measurement of the actual deformation of the footpad by observing changes in potential difference, and the measurement results are objective, intuitive, and accurate.

[0062] The air conditioner provided by the present invention includes a compressor and a foot pad located below the compressor, wherein the foot pad is selected and determined using the foot pad selection method described above.

[0063] Since the foot pads in this air conditioner were selected using the aforementioned foot pad selection method, they possess the beneficial effects of the aforementioned foot pad selection method, which will not be elaborated upon here. Attached Figure Description

[0064] Figure 1This is a flowchart illustrating a method for selecting a foot pad according to an embodiment of the present invention;

[0065] Figure 2 This is a structural diagram of a foot pad selection method according to an embodiment of the present invention;

[0066] Figure 3 This is a flowchart illustrating another method for selecting foot pads in an embodiment of the present invention.

[0067] Figure label:

[0068] 100 - Compressor; 200 - Foot pad; 300 - Upper electrode; 400 - Lower electrode. Detailed Implementation

[0069] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0070] Current methods for selecting compressor foot pads typically involve whole-machine testing of the compressor (drop test, simulated transportation), and indirect judgment of whether the foot pads meet the requirements based on changes in multiple parameters such as compressor piping stress and destructive deformation. This approach involves numerous test parameters, is not direct, yields inaccurate results, and only provides a qualitative assessment of whether the foot pads meet the requirements, without revealing the specific reasons why they might not. Specifically, the following problems exist:

[0071] ① The degree of deformation during the experiment cannot be visually observed: the foot pad deforms greatly during the shaking process and returns to its original shape after the experiment, making it impossible to visually observe whether the degree and range of deformation during transportation has reached the deformation limit;

[0072] ② Inability to quantitatively analyze the magnitude of deformation risk and proactively mitigate risk: The experiment can only judge obvious results such as pipe breakage, but the specific magnitude and number of deformations of the foot pads during the testing process are not reflected, only qualitative rather than quantitative. It is impossible to assess the range and number of deformations, find the critical situation, and the hardness of the foot pads themselves has errors, requiring multiple repeated tests.

[0073] ③ Long testing time and high uncertainty: The deformation of the foot pads cannot be observed in real time; testing must be passively awaited until the transportation test is completed, which is time-consuming. Furthermore, each experiment can only produce a qualitative result (whether the tube is broken or not), making it impossible to quantitatively assess the risk of tube breakage. To mitigate this risk, testing time must be increased several times over. For example, although a particular experiment may show no problems, it may have already reached a critical point, resulting in issues that were not apparent during development testing but occurred during actual transportation or user use.

[0074] To address the aforementioned issues, this invention provides a method for selecting compressor foot pads. Taking compressor foot pads as an example, the main concept is to measure the deformation of the compressor foot pads in real time during the experiment. By analyzing the range of deformation and the number of different deformations, the method can quickly determine whether the foot pad hardness is appropriate and the level of risk. It also provides the direction of modification (softer or harder) and the range of hardness (the hardness needs to be varied). Data can be gradually accumulated to more accurately pinpoint the risk boundary conditions. The specific implementation method is as follows.

[0075] This invention provides a method for selecting the right foot pads. Specifically, taking compressor foot pads as an example... Figure 1 As shown, the method includes the following steps:

[0076] S102, Select foot pads that meet the deformation conditions for static testing;

[0077] S104, obtain the dynamic actual deformation of the foot pad during transportation or operation testing; specifically, in this embodiment, the transportation testing process of the compressor is taken as an example.

[0078] S106, determine whether the maximum value of the actual dynamic deformation is within the dynamic preset deformation range. If not, reselect the foot pad; if yes, and the dynamic preset deformation condition is met, the current foot pad meets the requirements, and the test ends.

[0079] Compared with existing technologies, the floor mat selection method provided in this embodiment of the invention involves transporting or running floor mats that meet the static deformation test conditions. The method determines whether to reselect floor mats by judging whether the maximum value of the actual dynamic deformation during the transport test meets the requirements of the preset dynamic deformation range. If the maximum value of the actual dynamic deformation is not within the preset dynamic deformation range, the floor mat does not meet the quality requirements, and a new floor mat is selected for testing. Only when the maximum value of the actual dynamic deformation is within the preset dynamic deformation range and meets the preset dynamic deformation conditions is the current floor mat deemed to meet the requirements, and the test ends. Therefore, in this embodiment of the invention, the maximum value of the actual deformation of the floor mat after being compressed during the test directly determines whether the floor mat meets the requirements. There is no need to indirectly determine whether the floor mat meets the requirements by judging the changing characteristics of other objects. In short, the floor mat selection method provided in this embodiment of the invention directly determines whether the floor mat meets the requirements based solely on its own deformation during the test. That is, there is no need to know the parameter changes of other objects or to indirectly judge based on the destructive parameters of other objects. The test parameters are singular, the test method is direct, the test results are accurate, and the operation is simple and easy. Furthermore, in the prior art, the performance of the floor mat can only be qualitatively determined by the changing characteristics of other objects, but the specific reasons why the floor mat meets or does not meet the requirements cannot be understood. In the embodiments of the present invention, the reasons why the floor mat meets the requirements (e.g., the amount of deformation is appropriate and the softness and hardness are moderate) or the specific reasons why it does not meet the requirements (e.g., the amount of deformation is too large and it is too soft, or the amount of deformation is too small and it is too hard) can be directly and quantitatively understood by the deformation of the floor mat itself.

[0080] In this embodiment of the invention, step S102 includes the following sub-steps:

[0081] S1022, Obtain the actual static deformation of the foot pad under test after a preset static test duration under pressure;

[0082] S1024, determine whether the actual static deformation is within the static preset deformation range. If yes, the foot pad meets the static deformation condition; otherwise, the foot pad does not meet the static deformation condition, and a new foot pad is selected.

[0083] Therefore, in sub-steps S1022 to S1024 of step S102, the static deformation of the test pad is used to determine whether it meets the static deformation conditions. This allows for a quick and preliminary identification of the specific reasons why the pad does not meet the static deformation requirements. If the static deformation conditions are not met, a new pad is selected. If the static deformation conditions are met, there is no need to select a new pad temporarily, and the next step of dynamic testing can proceed. In other words, this step can initially determine whether the deformation of the pad meets the requirements. Pads that clearly do not meet the requirements are directly eliminated, and a new pad is selected without further testing. This allows for targeted testing of the pads. Compared with existing technologies that directly simulate transportation tests on the pads, this saves the testing of pads that clearly do not meet the requirements, significantly saving testing resources. In short, this step can quickly and initially identify and eliminate pads that do not meet the static deformation conditions, avoiding repeated testing and saving testing resources.

[0084] In this embodiment of the invention, the static preset deformation range is: greater than or equal to the lower preset static deformation amount, and less than or equal to the upper preset static deformation amount. Step S1024 above includes the following sub-steps:

[0085] S10242, If the actual static deformation is greater than the upper limit preset static deformation, calculate the absolute value of the upper limit difference between the actual static deformation and the upper limit preset static deformation. Based on the absolute value of the upper limit difference, select a foot pad with a higher hardness level to continue testing. The larger the absolute value of the upper limit difference, the higher the hardness level of the foot pad will be.

[0086] S10244 If the actual static deformation is less than the lower limit preset static deformation, calculate the absolute value of the lower limit difference between the actual static deformation and the lower limit preset static deformation. Based on the absolute value of the lower limit difference, select a foot pad with a lower hardness level to continue testing. The larger the absolute value of the lower limit difference, the lower the hardness level of the foot pad selected.

[0087] In sub-steps S10242 to S10244 of step 1024, if the actual static deformation of the pad is too large, it indicates that the pad is too soft, and a pad with a higher hardness level can be selected. If the actual static deformation of the pad is too small, it indicates that the pad is too hard, and a pad with a lower hardness level can be selected. In other words, before reselecting the pad, the reason why the pad does not meet the requirements has been understood. Compared with the prior art, which randomly reselects the pad without knowing the reason why the pad does not meet the requirements, the method provided by the embodiment of the present invention can quickly and specifically reselect a pad with a suitable hardness level. That is, this step can make a prediction based on the deformation of the pad and select the hardness level of the pad step by step according to the prediction result, so as to accurately know the hardness level of the pad to be reselected, making the selection result of the pad more accurate and faster, and saving the time of pad selection.

[0088] Specifically, in step S10242 above, based on the absolute value of the upper limit difference, a foot pad with a higher hardness level than the current one is selected for further testing, including the following sub-steps:

[0089] A1. If the absolute value of the upper limit difference is less than or equal to the first upper limit preset difference, the hardness of the reselected foot pad will be increased by the first level.

[0090] A2. If the absolute value of the upper limit difference is greater than the first upper limit preset difference and less than or equal to the second upper limit preset difference, the hardness of the reselected foot pad will be increased by the second level.

[0091] A3. If the absolute value of the upper limit difference is greater than the second upper limit preset difference, the hardness of the reselected foot pad will be increased by the third level.

[0092] Among them, the first upper limit preset difference is less than the second upper limit preset difference is less than the upper limit preset static deformation amount, and the first level is less than the second level is less than the third level.

[0093] In the sub-step of step S10242, the deformation of the foot pad can be predicted step by step, and the hardness level of the foot pad can be selected step by step according to the prediction results. This allows for accurate determination of the hardness level of the foot pad to be reselected, making the selection of the foot pad more accurate and faster, and saving time in the selection of the foot pad.

[0094] Specifically, in step S10244 above, based on the absolute value of the lower limit difference, a foot pad with a lower hardness level is selected for further testing, including the following sub-steps:

[0095] B1. If the absolute value of the lower limit difference is less than or equal to the first lower limit preset difference, the hardness of the reselected foot pad will be reduced by one level.

[0096] B2. If the absolute value of the lower limit difference is greater than the first lower limit preset difference and less than or equal to the second lower limit preset difference, then the hardness of the reselected foot pad is reduced by the second level.

[0097] B3. If the absolute value of the lower limit difference is greater than the second lower limit preset difference, the hardness of the reselected foot pad will be reduced by three levels.

[0098] Among them, the first lower limit preset difference is less than the second lower limit preset difference is less than the lower limit preset static deformation amount, and the first level is less than the second level is less than the third level.

[0099] In the sub-step of step S10244, the deformation of the foot pad can be predicted step by step, and the hardness level of the foot pad can be selected step by step according to the prediction results. This allows for accurate determination of the hardness level of the foot pad to be reselected, making the selection of the foot pad more accurate and faster, and saving time in the selection of the foot pad.

[0100] In this embodiment of the invention, the dynamic actual deformation amount is the dynamic actual deformation amount for a preset transportation test duration; the dynamic preset deformation range is: greater than or equal to the lower limit of the dynamic preset deformation amount, and less than or equal to the upper limit of the dynamic preset deformation amount.

[0101] In this embodiment of the invention, step S106 above, determining whether the actual dynamic deformation amount is within the dynamic preset deformation amount range, and if not, reselecting the foot pad, includes the following sub-steps:

[0102] S1062, if the maximum value of the actual dynamic deformation is greater than or equal to the upper limit of the preset dynamic deformation, the ratio between the maximum value of the actual dynamic deformation and the upper limit of the preset dynamic deformation is calculated to obtain the upper limit quotient. Based on the upper limit quotient, a foot pad with a higher hardness level than the current hardness level is selected to continue testing. The larger the upper limit quotient, the higher the hardness level of the foot pad is selected.

[0103] S1064. If the maximum value of the actual dynamic deformation is less than or equal to the lower limit of the preset dynamic deformation, the ratio between the maximum value of the actual dynamic deformation and the lower limit of the preset dynamic deformation is calculated to obtain the lower limit quotient. Based on the lower limit quotient, a foot pad with a lower hardness level is selected to continue testing. The smaller the lower limit quotient, the lower the hardness level of the foot pad is selected.

[0104] In sub-steps S1062 to S1064 of step 106 above, if the actual dynamic deformation of the foot pad is too large, it indicates that the foot pad is too soft, and a foot pad with a higher hardness level can be selected. If the actual dynamic deformation of the foot pad is too small, it indicates that the foot pad is too hard, and a foot pad with a lower hardness level can be selected. In other words, before reselecting the foot pad, the reason why the foot pad does not meet the requirements has been understood, and a foot pad with a suitable hardness level can be selected quickly and specifically. That is, this step can make a prediction based on the deformation of the foot pad, and select the hardness level of the foot pad step by step according to the prediction result, so as to accurately know the hardness level of the foot pad to be reselected, making the foot pad selection result more accurate and faster, and saving the time of foot pad selection.

[0105] Specifically, in this embodiment of the invention, step S1062 above, selecting a foot pad with a higher hardness level than the current one based on the upper limit quotient, includes the following sub-steps:

[0106] C1, if the upper limit quotient is less than or equal to the first upper limit preset ratio, the hardness of the reselected foot pad will be increased by the first level;

[0107] C2, if the upper limit quotient is greater than the first upper limit preset ratio and less than or equal to the second upper limit preset ratio, the hardness of the reselected foot pad will be increased by the second level;

[0108] C3, if the upper limit quotient is greater than the second upper limit preset ratio, the hardness of the reselected foot pad will be increased by the third level;

[0109] The first level is lower than the second level, which is lower than the third level.

[0110] In the sub-step of step S1062, the deformation of the foot pad can be predicted step by step, and the hardness level of the foot pad can be selected step by step according to the prediction results. This allows for accurate determination of the hardness level of the foot pad to be reselected, making the selection of the foot pad more accurate and faster, and saving time in the selection of the foot pad.

[0111] In this embodiment of the invention, step S1064 above, selecting a foot pad with a hardness level lower than the current hardness level for further testing based on the lower limit quotient, includes the following steps:

[0112] D1, if the lower limit quotient is less than or equal to 1 and greater than the first lower limit preset ratio, then the hardness of the reselected foot pad is reduced by one level;

[0113] D2, if the lower limit quotient is less than or equal to the first lower limit preset ratio and greater than the second lower limit preset ratio, then the hardness of the reselected foot pad is reduced by the second level;

[0114] D3, if the upper limit quotient is less than or equal to the second lower limit preset ratio, the hardness of the reselected foot pad will be reduced by three levels;

[0115] The first level is lower than the second level, which is lower than the third level.

[0116] In the sub-step of step S1064, the deformation of the foot pad can be predicted step by step, and the hardness level of the foot pad can be selected step by step according to the prediction results. This allows for accurate determination of the hardness level of the foot pad to be reselected, making the selection of the foot pad more accurate and faster, and saving time in the selection of the foot pad.

[0117] In this embodiment of the invention, step S106 above, determining whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and if so, and if the preset dynamic deformation condition is met, then the current foot pad meets the requirements, and the test ends; includes the following sub-steps:

[0118] S10662, determine whether the maximum value of the dynamic actual deformation is within the dynamic preset deformation range, and whether the maximum value of the dynamic actual deformation is greater than or equal to the preset fatigue deformation. If so, obtain the total number of deformations and the number of excessive deformations where the dynamic actual deformation is greater than or equal to the preset fatigue deformation during the foot pad transportation test. Wherein, the preset fatigue deformation is less than the upper limit of the dynamic preset deformation and greater than the lower limit of the dynamic preset deformation.

[0119] S10664, calculate the ratio of the number of excessive deformations to the total number of deformations;

[0120] S10666, Determine whether the ratio of deformation times is greater than or equal to the preset ratio. If yes, select a foot pad with a higher hardness level than the current one. The higher the ratio of deformation times, the higher the hardness level of the selected foot pad. If no, the current foot pad meets the requirements, and the test ends.

[0121] In this embodiment of the invention, step S106 above, determining whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and if so, and if the preset dynamic deformation condition is met, then the current foot pad meets the requirements, and the test ends; it also includes the following sub-steps:

[0122] S1068, determine whether the maximum value of the dynamic actual deformation is within the dynamic preset deformation range, and whether the maximum value of the dynamic actual deformation is less than the preset fatigue deformation. If so, the current foot pad meets the requirements and the test ends. Among them, the preset fatigue deformation is less than the upper limit of the dynamic preset deformation and greater than the lower limit of the dynamic preset deformation.

[0123] In the sub-steps S10662-S10666 and S1068 of step S106 above, the fatigue resistance during the deformation process of the foot pad is considered, which can more accurately understand the deformation characteristics of the foot pad itself, that is, understand its elastic deformation characteristics. Specifically, when the deformation amount of the foot pad not only meets the dynamic preset deformation range requirement, but also meets the preset fatigue deformation amount requirement, it means that the foot pad not only meets the basic deformation requirements, but also meets the fatigue resistance requirements; otherwise, if the foot pad meets the dynamic preset deformation range requirement, but does not meet the preset fatigue deformation amount requirement, it means that although the foot pad meets the basic deformation requirements, its fatigue resistance is weak and its effective service life is short.

[0124] In this embodiment of the invention, an upper electrode is provided on the upper surface of the foot pad, and a lower electrode is provided on the lower surface of the foot pad. The method further includes the following steps:

[0125] S202, detects the potential difference between the upper and lower electrodes;

[0126] S204. The actual deformation of the foot pad is obtained based on the change in potential difference.

[0127] The above steps S202 to S204 can directly and quickly measure the actual deformation of the foot pad by measuring the change in potential difference. The measurement results are objective, intuitive and accurate.

[0128] As can be seen from the above steps and sub-steps, the foot pad selection method provided by the embodiments of the present invention can determine whether the foot pad meets the hardness requirements based on the different deformation amounts of the foot pad in the corresponding test stages, and reselect the direction of the hardness level, and gradually increase or decrease the hardness level according to different deformation amounts. In this process, deformation data can be gradually accumulated to more accurately lock the possible risk boundary conditions of the foot pad (such as risk deformation amount, which may cause it to fail to effectively absorb shock).

[0129] It should be noted that in the relevant steps of the embodiments of the present invention, different steps are referred to as increasing or decreasing the hardness by a first level, a second level, and a third level. This actually means that the first level of hardness increase or decrease can be the same or different in different steps. For example, in each step, the first level can be 1, 2, 3..., or in one or some steps, the first level is 1, 2, 3..., while in another or some steps, the first level is 1, 2, 3... but with different values. Similarly, in different steps, the second level of hardness increase or decrease can be the same or different, and the third level of hardness increase or decrease can be the same or different. This can also be illustrated in the specific examples below.

[0130] The method for selecting foot pads provided in this embodiment of the invention will be further illustrated below with more specific examples:

[0131] like Figure 2 As shown, the foot pad 200 is located below the compressor 100. The upper surface of the foot pad 200 is provided with an upper electrode 300, and the lower surface of the foot pad 200 is provided with a lower electrode 400. The specific selection method of the foot pad is to detect the potential difference between the upper electrode 300 and the lower electrode 400; and to obtain the actual deformation of the foot pad 200 based on the change in the potential difference.

[0132] The specific steps of the selection method in this example include:

[0133] S3001, the foot pad with the selected hardness is installed into the compressor unit, and the static actual deformation ΔL of the foot pad is measured after a static test time t1. The range of t1 is 3 to 10 minutes, preferably 3 minutes.

[0134] S3002, compare the actual static deformation ΔL of the foot pad with the static preset deformation range [L2, L1].

[0135] For S3003, if the static actual deformation ΔL of the foot pad is greater than L1, it indicates that the deformation of the foot pad is excessive and the foot pad is too soft, and this foot pad does not meet the requirements. Then, based on the static actual deformation ΔL of the foot pad and the absolute value K of the difference between the static actual deformation ΔL and the upper limit preset static deformation L1 of the static preset deformation range, that is, K = |ΔL - L1|, reselect the hardness of the foot pad. For the specific reselection, see steps S3004 to S3006.

[0136] For S3004, if K ≤ K1×L1, then newly select a foot pad with a hardness one level higher, that is, hardness level +1, and reselect again.

[0137] For S3005, if K1×L1 < K ≤ K2×L1, then newly select a foot pad with a hardness two levels higher, that is, hardness level +2, and reselect again.

[0138] For S3006, if K > K2×L1, then newly select a foot pad with a hardness three levels higher, that is, hardness level +3, and reselect again.

[0139] Among steps S3004 to S3006, the range of L1 is 20 - 30 mm, preferably 23 mm; the range of K1 is 0.2 - 0.4, preferably 0.3; the range of K2 is 0.5 - 0.9, preferably 0.6.

[0140] For S3007, if the static actual deformation ΔL of the foot pad is less than L2, it indicates that the deformation of the foot pad is too small and the foot pad is too hard, and this foot pad does not meet the requirements. Then, based on the static actual deformation ΔL of the foot pad and the absolute value J of the difference between the static actual deformation ΔL and the lower limit preset static deformation L2 of the static preset deformation range, that is, J = |ΔL - L2|, reselect the hardness of the foot pad. For the specific reselection, see steps S3008 to S3010.

[0141] For S3008, if J ≤ K3×L2, then newly select a foot pad with a hardness one level lower, that is, hardness level -1, and reselect again.

[0142] For S3009, if K3×L2 < J ≤ K4×L2, then newly select a foot pad with a hardness two levels lower, that is, hardness level -2, and reselect again.

[0143] For S3010, if J > K4×L2, then newly select a foot pad with a hardness three levels lower, that is, hardness level -3, and reselect again.

[0144] Among steps S3008 to S3010, the range of L2 is 3 - 10 mm, preferably 6 mm; the range of K3 is 0.2 - 0.4, preferably 0.3; the range of K4 is 0.5 - 0.9, preferably 0.6.

[0145] S3020, if the static actual deformation ΔL satisfies: L2≤ΔL≤L1, then the foot pad meets the static deformation test requirements and can be subjected to transportation testing. During the transportation test, the dynamic actual deformation δL and the number of dynamic actual deformations N of the foot pad are continuously recorded. t The duration is t2. For specific transportation tests, see steps S3021-S3031. The range of t2 is 3 to 10 minutes, preferably 3 minutes. In addition, other duration values ​​can be selected. For example, the specific duration is not limited, and the duration t2 can be until the test and selection meet the deformation requirements.

[0146] S3021, if the maximum value of the actual dynamic deformation is δL max Satisfy: δL max If L3 is greater than or equal to 3, the foot pad is too soft. The current foot pad test is over, and the foot pad needs to be reselected. For details on the reselection method, please refer to steps S3022 to S3024. Here, L3 is the upper limit of the dynamically preset deformation range, and the upper limit quotient is Q. M =δL max / L3.

[0147] S3022, if Q M If the hardness is ≤K5, then select a foot pad with a higher hardness level, that is, hardness level +1, and select again; where K5 is the first upper limit preset ratio.

[0148] S3023, if K5 M If the hardness is ≤K6, then select a foot pad with a hardness level three higher, that is, hardness level +3, and select again. Here, K6 is the second upper limit preset ratio.

[0149] S3024, if Q M If the hardness is >K6, then select a foot pad that is five levels higher, that is, a hardness level +5, and then select a different model.

[0150] Among them, L3 ranges from 40 to 90 mm, preferably 40 mm; K5 ranges from 1.1 to 1.3, preferably 1.1; K6 ranges from 1.4 to 1.6, preferably 1.5.

[0151] S3025, if the maximum value of the actual dynamic deformation is δL max Satisfy: δL max If L4 is less than or equal to 0, the floor mat is too hard. The current floor mat test is complete, and the floor mat needs to be reselected. For details on the reselection method, please refer to steps S3026 to S3028. Here, L4 is the lower limit of the dynamically preset deformation range, and the lower limit quotient is Q. m =δL min / L4.

[0152] S3026, if K7 <Q​m If it is ≤ 1, select a foot pad with a hardness level lower by one level, that is, hardness level -1, for re-selection. Here, K7 is the first lower limit preset ratio.

[0153] S3027, if K8 < Q m ≤ K7, select a foot pad with a hardness level lower by three levels, that is, hardness level -3, for re-selection; here, K8 is the second lower limit preset ratio.

[0154] S3028, if Q m ≤ K8, select a foot pad with a hardness level lower by five levels, that is, hardness level -5, for re-selection.

[0155] Among them, the range of L4 is 6 - 20 mm, preferably 10 mm; the range of K7 is 0.5 - 0.9, preferably 0.6; the range of K8 is 0.2 - 0.4, preferably 0.4.

[0156] S3029, if the maximum value of the dynamic actual deformation δL max and the dynamic actual deformation δL satisfy: L5 ≤ δL max < L3, and β ≥ V1, the foot pad is too soft. Re-select according to a foot pad with a hardness level one level higher, that is, hardness level +1; here, β = N1 / N t , L5 is the preset fatigue deformation, L4 < L5 < L3; N1 is the number of excessive deformation times when the dynamic actual deformation δL is greater than or equal to the preset fatigue deformation L5 and less than the upper limit dynamic preset deformation L3, that is, the number of excessive deformation times when δL satisfies: L5 ≤ δL < L3; N t is the total number of dynamic actual deformation times; V1 is the preset number ratio; specifically, if the ratio of the total number of times falling in the interval [L5, L3) to the total number of deformation amounts is slightly larger, that is, there is a greater probability of falling in the interval [L5, L3), and L3 is the upper limit dynamic preset deformation amount of the dynamic preset deformation interval, it indicates that the foot pad has a high probability of falling near L3, indicating that the foot pad is too soft, then re-select according to a foot pad with a hardness level one level higher, that is, hardness level +1;

[0157] Among them, the range of L5 is 30 - 40 mm, preferably 33 mm; the range of V1 is 0.5 - 0.8, preferably 0.6.

[0158] S3030, if the maximum value of the dynamic actual deformation δL max and the ratio β satisfy: L5 ≤ δL max < L3, and β < V1, then the foot pad meets the requirements and the test ends.

[0159] S3031, if the maximum value of the dynamic actual deformation δL max , satisfies: L4 < δL maxIf <L5, the foot pad meets the requirements and the test ends.

[0160] It should be noted that in the embodiments of the present invention, a test device can be added. For example: as Figure 2 shown, the three foot pads of the compressor can all be implemented by the above method, which will not be elaborated here.

[0161] In summary, the foot pad selection method provided by the embodiments of the present invention has the following advantages:

[0162] 1) During the foot pad test and selection process, the deformation amount of the foot pad can be completely presented, and based on the deformation amount of the foot pad, it can be analyzed and determined whether the hardness of the foot pad is appropriate and the direction of hardness change.

[0163] 2) During the foot pad test and selection process, based on the predicted result of the deformation amount of the foot pad, the hardness level of the foot pad is gradually increased or decreased. Therefore, potential problems such as the deformation amount being close to but not exceeding the critical point can be intuitively understood, avoiding a large number of repeated experiments (compared with the random re-selection of foot pads in the existing technology without any purpose and direction);

[0164] 3) During the foot pad test and selection process, the actual deformation amount of the foot pad can be presented in real time and judged based on this actual deformation amount, so that problems can be quickly discovered, the test and selection time can be shortened, and development time and test resources can be saved;

[0165] 4) During the foot pad test and selection process, the deformation amount data of the foot pad can be gradually corrected and accumulated to generate a more accurate database, which is convenient for subsequent selection of foot pads and compressors adapted to the foot pads;

[0166] 5) During the foot pad test and selection process, the deformation amount of the foot pad can be directly and completely obtained in real time, rather than finally presenting only one result (such as in the prior art, the pipeline of the compressor judges whether the foot pad meets the requirements, but cannot determine the specific reason why the foot pad does not meet the requirements: too soft or too hard?); moreover, it will not have a destructive impact on other objects.

[0167] 6) During the foot pad test and selection process, based on the static deformation amount of the foot pad, the problem points can be quickly identified, saving test resources;

[0168] 7) During the foot pad test and selection process, according to whether the dynamic maximum deformation amount or the number of deformation times during the transportation test of the foot pad reaches the boundary (the corresponding preset value), the magnitude of the deformation risk can be quickly identified, saving selection time and resources;

[0169] 8) During the foot pad test and selection process, based on the magnitude of the deformation amount of the foot pad, the magnitude of the hardness change amount for re-selecting the foot pad can be deduced, and a suitable foot pad can be quickly selected.

[0170] The foot pad selection method provided in this invention can more clearly identify the failure boundary conditions of vibration damping foot pads; a single test can quantitatively analyze the risk of foot pad hardness failure, avoiding the high complexity caused by multiple tests; it can quickly identify the risk level without waiting for the experiment to complete; and it can gradually accumulate data, thereby avoiding the hardness error of the foot pad itself.

[0171] This invention also provides an air conditioner, including a compressor 100 and a foot pad 200 located below the compressor 100. The foot pad is selected and determined using the foot pad selection method described above. Since the foot pad in this air conditioner is determined using the foot pad selection method described above, it has the beneficial effects of the foot pad selection method described above, which will not be elaborated further here.

[0172] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0173] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for selecting a foot pad, characterized in that, The method for selecting floor mats includes the following steps: Select foot pads that meet the deformation conditions for static testing; The dynamic actual deformation of the foot pad during transportation or operational testing is obtained; Determine whether the maximum value of the dynamic actual deformation is within the dynamic preset deformation range. If not, reselect the foot pad. If yes, and the dynamic preset deformation condition is met, the current foot pad meets the requirements, and the test ends. The dynamic actual deformation is the dynamic actual deformation for a preset duration of transportation or operation test. The dynamic preset deformation range is: greater than or equal to the lower limit of the dynamic preset deformation and less than or equal to the upper limit of the dynamic preset deformation. The step of determining whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and if so, and if the preset dynamic deformation condition is met, then the current foot pad meets the requirements and the test ends; includes the following steps: Determine whether the maximum value of the dynamic actual deformation is within the dynamic preset deformation range, and whether the maximum value of the dynamic actual deformation is greater than or equal to the preset fatigue deformation. If so, obtain the total number of deformations during the transportation or operation test of the foot pad and the number of excessive deformations where the dynamic actual deformation is greater than or equal to the preset fatigue deformation. Calculate the ratio of the number of excessive deformations to the total number of deformations. Determine whether the ratio of the number of deformations is greater than or equal to a preset ratio. If so, reselect a foot pad with a higher hardness level than the current one. The larger the ratio of the number of deformations, the higher the hardness level of the reselected foot pad. If not, the current foot pad meets the requirements, and the test ends. Alternatively, determine whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and whether the maximum value of the actual dynamic deformation is less than the preset fatigue deformation. If so, the current foot pad meets the requirements, and the test ends. Wherein, the preset fatigue deformation amount is less than the upper limit dynamic preset deformation amount and greater than the lower limit dynamic preset deformation amount.

2. The method for selecting foot pads according to claim 1, characterized in that, The selection of foot pads that meet the static test deformation conditions includes the following steps: Obtain the actual static deformation of the foot pad under test after a preset static test duration under pressure; Determine whether the actual static deformation amount is within the static preset deformation range. If yes, the foot pad meets the static deformation condition; otherwise, the foot pad does not meet the static deformation condition, and a new foot pad is selected.

3. The method for selecting foot pads according to claim 2, characterized in that, The static preset deformation range is: greater than or equal to the lower preset static deformation and less than or equal to the upper preset static deformation. The step of determining whether the actual static deformation is within the preset static deformation range, and if not, the foot pad does not meet the static deformation condition, and a new foot pad is selected, includes the following steps: If the actual static deformation is greater than the upper limit preset static deformation, then the absolute value of the upper limit difference between the actual static deformation and the upper limit preset static deformation is calculated. Based on the upper limit difference, a foot pad with a higher hardness level is selected to continue testing. The larger the upper limit difference, the higher the hardness level of the foot pad is selected. If the actual static deformation is less than the lower limit preset static deformation, then the absolute value of the lower limit difference between the actual static deformation and the lower limit preset static deformation is calculated. Based on the absolute value of the lower limit difference, a foot pad with a lower hardness level is selected to continue testing. The larger the absolute value of the lower limit difference, the lower the hardness level of the foot pad is selected.

4. The method for selecting foot pads according to claim 3, characterized in that, The step of selecting a footpad with a higher hardness level than the current one based on the absolute value of the upper limit difference includes the following steps: If the absolute value of the upper limit difference is less than or equal to the first upper limit preset difference, the hardness of the reselected foot pad is increased by the first level; If the absolute value of the upper limit difference is greater than the first upper limit preset difference and less than or equal to the second upper limit preset difference, then the hardness of the reselected foot pad will be increased by the second level. If the absolute value of the upper limit difference is greater than the second upper limit preset difference, the hardness of the reselected foot pad will be increased by a third level; Wherein, the first upper limit preset difference is less than the second upper limit preset difference is less than the upper limit preset static deformation amount, and the first level is less than the second level is less than the third level.

5. The method for selecting foot pads according to claim 3, characterized in that, The step of selecting a footpad with a lower hardness level for further testing based on the absolute value of the difference between the lower limits includes the following steps: If the absolute value of the lower limit difference is less than or equal to the first lower limit preset difference, the hardness of the reselected foot pad is reduced by the first level; If the absolute value of the lower limit difference is greater than the first lower limit preset difference and less than or equal to the second lower limit preset difference, then the hardness of the reselected foot pad is reduced by the second level. If the absolute value of the lower limit difference is greater than the second lower limit preset difference, the hardness of the reselected foot pad will be reduced by a third level. Wherein, the first lower limit preset difference is less than the second lower limit preset difference is less than the lower limit preset static deformation amount, and the first level is less than the second level is less than the third level.

6. The method for selecting foot pads according to claim 1, characterized in that, The dynamic actual deformation amount is the dynamic actual deformation amount during a preset transportation or operation test period; the dynamic preset deformation range is: greater than or equal to the lower limit of the dynamic preset deformation amount, and less than or equal to the upper limit of the dynamic preset deformation amount. The step of determining whether the maximum value of the actual dynamic deformation is within the preset dynamic deformation range, and if not, reselecting the foot pad, includes the following steps: If the maximum value of the actual dynamic deformation is greater than or equal to the upper limit of the preset dynamic deformation, then the ratio between the maximum value of the actual dynamic deformation and the upper limit of the preset dynamic deformation is calculated to obtain the upper limit quotient. Based on the upper limit quotient, a foot pad with a higher hardness level than the current hardness level is selected for further testing. The larger the upper limit quotient, the higher the hardness level of the foot pad is selected. If the maximum value of the actual dynamic deformation is less than or equal to the lower limit of the preset dynamic deformation, the ratio between the maximum value of the actual dynamic deformation and the lower limit of the preset dynamic deformation is calculated to obtain the lower limit quotient. Based on the lower limit quotient, a foot pad with a lower hardness level is selected to continue testing. The smaller the lower limit quotient, the lower the hardness level of the foot pad is selected.

7. The method for selecting foot pads according to claim 6, characterized in that, The step of selecting a footpad with a higher hardness level than the current one based on the upper limit quotient and continuing the test includes the following steps: If the upper limit quotient is less than or equal to the first upper limit preset ratio, the hardness of the reselected foot pad is increased by the first level; If the upper limit quotient is greater than the first upper limit preset ratio and less than or equal to the second upper limit preset ratio, the hardness of the reselected foot pad is increased by a second level; If the upper limit quotient is greater than the second upper limit preset ratio, the hardness of the reselected foot pad will be increased by a third level; Among them, the first level is less than the second level, which is less than the third level.

8. The method for selecting floor mats according to claim 6, characterized in that, The step of selecting a footpad with a lower hardness level than the current one for further testing based on the lower limit quotient includes the following steps: If the lower limit quotient is less than or equal to 1 and greater than the first lower limit preset ratio, the hardness of the reselected foot pad is reduced by the first level. If the lower limit quotient is less than or equal to the first lower limit preset ratio and greater than the second lower limit preset ratio, the hardness of the reselected foot pad is reduced by a second level. If the upper limit quotient is less than or equal to the second lower limit preset ratio, the hardness of the reselected foot pad is reduced by a third level; Among them, the first level is less than the second level, which is less than the third level.

9. The method for selecting floor mats according to any one of claims 1-8, characterized in that, The upper surface of the foot pad is provided with an upper electrode, and the lower surface of the foot pad is provided with a lower electrode. The method further includes: Detect the potential difference between the upper electrode and the lower electrode; The actual deformation of the foot pad is obtained based on the change in the potential difference.

10. An air conditioner, characterized in that, It includes a compressor and a foot pad located below the compressor, the foot pad being selected using the foot pad selection method according to any one of claims 1-9.

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