A low noise radiator based on corrugated centrifugal fan blades

Abstract

This invention relates to the field of data noise processing, specifically to a low-noise heat sink based on corrugated centrifugal fan blades. The heat sink includes a low-noise heat sink body and a low-noise heat dissipation analysis module. This module includes a data acquisition module, a computing chip, and an intelligent balance display module. The module displays the noise inherent in the balance rotation speed itself and the rotation speed data after heat dissipation. The data acquisition module acquires several initial fan blade rotation speed data of the corrugated centrifugal fan blades. The computing chip performs low-noise heat dissipation relationship analysis based on the initial fan blade rotation speed data to determine a global comprehensive evaluation index and performs control. This invention can reduce significant noise jumps and achieve better overall noise reduction performance.

Description

Technical Field

[0001] This invention relates to the field of data noise processing, and specifically to a low-noise radiator, system, and device based on corrugated centrifugal fan blades. Background Technology

[0002] As high-performance portable electronic devices rapidly evolve towards extreme thinness and high computing power, the internal heat flux density of the system is increasing dramatically, posing a dual challenge to the airflow and noise reduction performance of cooling fans. Although existing technologies have begun to explore the introduction of three-dimensional nonlinear biomimetic structures such as corrugated blades to disperse trailing edge vortices in order to weaken or eliminate high-frequency harsh narrowband noise, the limitations of the extreme Z-axis space and the drastic transient fluctuations in speed caused by sudden changes in software load during actual use often lead to a "single-condition overfitting" engineering dilemma due to the purely hardware-level, fragmented static geometry optimization. This can easily induce high-frequency noise during dynamic speed adjustment, making it difficult to meet users' requirements for a smooth acoustic experience in complex, all-scenario environments.

[0003] Traditional corrugated blade parameter optimization only solves for a few fixed rated speeds independently, ignoring the slight speed drift caused by temperature fluctuations in the temperature control system during actual operation. As a result, the structure, which is originally in the "acoustic trough" at a specific speed, is very easy to fall into the nearby high-frequency resonance "cliff" when faced with slight speed disturbances, causing obvious abnormal noise jumps and failing to achieve the globally optimal noise reduction performance. Summary of the Invention

[0004] This invention provides a low-noise heat sink, system, and device based on corrugated centrifugal fan blades to solve existing problems.

[0005] The present invention provides a low-noise heat sink and system based on corrugated centrifugal fan blades, which adopts the following technical solution: A low-noise heat sink based on corrugated centrifugal fan blades includes a low-noise heat sink body, characterized in that the low-noise heat sink body includes a low-noise heat dissipation analysis module, the low-noise heat dissipation analysis module includes a data acquisition module, a computing chip and an intelligent balance display module. The data acquisition module is connected to the signal input terminal of the computing chip, and the signal output terminal of the computing chip is connected to the intelligent balance display module. The intelligent balance display module is used to display the noise contained in the balance speed itself and the speed data after heat dissipation. The data acquisition module is used to acquire several initial fan blade speed data of the corrugated centrifugal fan blade. Each initial fan blade speed data corresponds to a node time, and each node time corresponds to a reference speed data, which is then transmitted to the computing chip. Based on the difference between the initial fan blade speed data and the reference speed data, the interference of the environment on the rotation direction of the corrugated centrifugal fan blade at different node times is analyzed, and the speed compensation state of the corrugated centrifugal fan blade at different node times is determined. For any node time, based on the speed compensation state of the corrugated centrifugal fan blade at the node time, combined with the change of the reference speed data within the preset fluctuation range, the gain effect of the machine's heat dissipation degree on low noise performance when the corrugated centrifugal fan blade rotates to the node time is analyzed, and the heat dissipation compensation coefficient of the initial fan blade speed data of the corrugated centrifugal fan blade at the node time is calculated. Based on the heat dissipation compensation coefficient and initial blade speed data at the node time, the overall performance of low noise and heat dissipation of the corrugated centrifugal fan blade at the node time is analyzed. The initial blade speed data at the node time is corrected, and the corrected blade speed data of the corrugated centrifugal fan blade at the node time is calculated. Based on the fluctuation of the heat dissipation compensation coefficient of the overall initial blade speed data, combined with the corrected blade speed data, the balance between noise generated by the rotation of the corrugated centrifugal fan blade and heat dissipation is analyzed, and the global comprehensive evaluation index of the corrugated centrifugal fan blade is calculated. Control is performed based on the overall comprehensive evaluation index, which is used to display the noise contained in the balance speed itself and the speed data after heat dissipation.

[0006] Preferably, the method for obtaining the speed compensation state is as follows: Taking any node time as the target node time, at the target node time, by comparing the degree of difference between the initial fan blade speed data and the reference speed data, the speed direction disturbance state judgment value at the target node time is calculated; by judging the positive and negative values ​​of the speed direction disturbance state judgment value, the speed compensation state of the corrugated centrifugal fan blade at the target node time is determined.

[0007] Preferably, the method for obtaining the rotational speed direction interference state determination value is as follows: The difference between the initial blade speed data and the reference speed data is calculated and used as the speed direction disturbance state judgment value at the target node time.

[0008] Preferably, the method for obtaining the heat dissipation compensation coefficient is as follows: The corrugated centrifugal fan blade has two speed compensation states at the node time: acceleration compensation state and deceleration compensation state; the size of the preset fluctuation range of the reference speed data at the node time is used as the compensation allowable disturbance value at the node time; the ratio of the speed direction disturbance state judgment value to the compensation allowable disturbance value is used as the state disturbance value at the node time. If the speed compensation state of the corrugated centrifugal fan blade at the node time is the speed-up compensation state, analyze the degree of influence of the state disturbance value on the reverse heat dissipation of the speed-up compensation state, and calculate the heat dissipation speed-up compensation coefficient of the initial fan blade speed data at the node time; if the speed compensation state of the corrugated centrifugal fan blade at the node time is the speed-down compensation state, analyze the degree of influence of the state disturbance value on the positive heat dissipation of the speed-up compensation state, and calculate the heat dissipation speed-down compensation coefficient of the initial fan blade speed data at the node time. By combining the heat dissipation acceleration compensation coefficient and the heat dissipation deceleration compensation coefficient, the heat dissipation compensation coefficient of the initial fan speed data of the corrugated centrifugal fan blade at the node moment is obtained.

[0009] Preferably, the method for obtaining the heat dissipation acceleration compensation coefficient is as follows: A heat dissipation acceleration benchmark value is preset, and the difference between the heat dissipation acceleration benchmark value and the state disturbance value is used as the heat dissipation acceleration compensation coefficient of the initial fan speed data of the centrifugal fan blade at the node time.

[0010] Preferably, the method for obtaining the heat dissipation rate reduction compensation coefficient is as follows: A heat dissipation deceleration baseline value is preset, and the sum of the heat dissipation acceleration baseline value and the state disturbance value is used as the heat dissipation deceleration compensation coefficient of the initial fan speed data of the centrifugal fan blade at the node time.

[0011] Preferably, the method for obtaining the fan blade speed correction data is as follows: By combining the heat dissipation compensation coefficient at the node time with the initial fan blade speed data, a joint evaluation index for the initial fan blade speed data at the node time is calculated. Within the preset fluctuation range of the reference speed data at the node time, the speed data other than the initial fan blade speed data are used as reference speed data. The joint evaluation indexes of different reference speed data are iterated, and the reference speed data with the smallest joint evaluation index is used as the fan blade speed correction data of the corrugated centrifugal fan at the node time.

[0012] Preferably, the method for obtaining the joint evaluation index is as follows: The product of the heat dissipation compensation coefficient at the node time and the initial fan blade speed data is used as the joint evaluation index of the initial fan blade speed data at the node time.

[0013] Preferably, the method for obtaining the global comprehensive evaluation index is as follows: Based on the stability of the heat dissipation compensation coefficient of the overall initial fan blade speed data, the joint evaluation volatility of the initial fan blade speed data is calculated; the heat dissipation compensation coefficient of the fan blade speed correction data at different node times is calculated; and the global comprehensive evaluation index of the corrugated centrifugal fan blade is calculated by combining the heat dissipation compensation coefficient of all fan blade speed correction data with the joint evaluation volatility.

[0014] Preferably, the method for obtaining the joint evaluation volatility is as follows: The standard deviation of the heat dissipation compensation coefficient of the overall initial fan blade speed data is used as the joint evaluation variability of the overall initial fan blade speed data.

[0015] The beneficial effects of the technical solution of the present invention are: it can not only accurately output the optimal corrugated solid geometry parameters with a higher overall fault tolerance, but also simultaneously decouple the output of the exclusive underlying control firmware that is deeply bound to its physical acoustic fingerprint. The greater the degree to which the residual resonance area of ​​the hardware is avoided, the more it can achieve the ultimate quiet performance without any abnormal noise changes across the entire speed range without significantly sacrificing the system's extreme heat dissipation capacity; it also reduces obvious abnormal noise jumps and achieves better overall noise reduction performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the centrifugal fan of the present invention.

[0018] Figure 2 This is a schematic diagram of the corrugated centrifugal fan blade of the present invention.

[0019] Figure 3 This is a 3D rendering schematic diagram of the centrifugal fan of the present invention.

[0020] Figure 4 This is a schematic diagram of the data processing flow of the computing chip in a low-noise heat sink based on corrugated centrifugal fan blades according to the present invention.

[0021] Figure 5 This is a schematic diagram showing the before-and-after comparison of the effects of the present invention. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a low-noise heat sink based on corrugated centrifugal fan blades proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] The following description, in conjunction with the accompanying drawings, details a specific solution for a low-noise heat sink based on corrugated centrifugal fan blades provided by the present invention.

[0025] Please see Figure 1 The diagram shows a centrifugal fan of the present invention, wherein the air inlet is located at the top and bottom of the fan housing and has a double-sided air intake design, and the fluid is drawn in along the axial direction; the impeller is located at the center of the housing and is driven to rotate at high speed by a motor, and multiple fan blades are distributed on it; the air outlet is located on the side of the housing, and the airflow is accelerated by the impeller and discharged radially under the action of centrifugal force.

[0026] Please see Figure 2 The diagram shows a corrugated centrifugal fan blade, in which fluid is drawn in axially, accelerated by the high-speed rotating impeller, and then discharged radially along the side under the action of centrifugal force. The undulating colored lines indicate that the blade surface is not a flat plane, but has a wavy geometry that extends radially.

[0027] Please see Figure 3 The diagram shows a 3D rendering of a centrifugal fan, including 1. power supply harness, 2. mounting screws, 3. fan housing, 4. air outlet, 5. fan motor, and 6. fan impeller.

[0028] The data acquisition module is connected to the signal input terminal of the computing chip, and the signal output terminal of the computing chip is connected to the intelligent balance display module. The intelligent balance display module is used to display the noise contained in the balance speed itself and the speed data after heat dissipation. The data acquisition module is used to acquire several initial fan blade speed data of the corrugated centrifugal fan blade. Each initial fan blade speed data corresponds to a node time, and each node time corresponds to a reference speed data, which is then transmitted to the computing chip.

[0029] In this embodiment, the process of obtaining the initial fan blade speed data is as follows: obtain several initial fan blade speed data of one run of the corrugated centrifugal fan blade from the database of corrugated centrifugal fan blades.

[0030] It should be noted that in this embodiment, the corrugated centrifugal fan blades in the database run for 30 minutes by default each time, and each 3-second interval is a node moment, with each node moment corresponding to a reference speed data.

[0031] It should be noted that the reference rotational speed data is experimental target data pre-planned based on existing experimental experience, used for subsequent analysis and comparison of the gap between the corrugated centrifugal fan blade and the ideal experimental target, in order to optimize the shortcomings of existing technologies.

[0032] Further, please refer to Figure 4 The diagram illustrates a data processing flow of a computing chip in a low-noise heat sink based on corrugated centrifugal fan blades according to the present invention, including the following steps: Step S001: Based on the difference between the initial fan blade speed data and the reference speed data, analyze the interference of the environment on the speed direction when the corrugated centrifugal fan blade rotates to different node times, and determine the speed compensation state of the corrugated centrifugal fan blade at different node times; for any node time, based on the speed compensation state of the corrugated centrifugal fan blade at the node time, combined with the change in the reference speed data within the preset fluctuation range, analyze the gain effect of the machine's heat dissipation on low noise performance when the corrugated centrifugal fan blade rotates to the node time, and calculate the heat dissipation compensation coefficient of the initial fan blade speed data of the corrugated centrifugal fan blade at the node time.

[0033] It is important to note that under the original fixed speed control strategy, it is possible to further reduce actual operating noise without compromising heat dissipation safety by using a "small-range speed offset." Since the speed nodes in traditional temperature control systems are typically fixed discrete values, existing technologies generally assume that a certain temperature range corresponds to only one target speed. However, actual testing has revealed that in some corrugated fan blade structures, certain adjacent speed positions may precisely correspond to local acoustic troughs. That is, although the fan speed may only change by a few dozen revolutions, the wake interference frequency, blade passing frequency, and structural resonance relationship will change significantly, resulting in a sharp drop in noise. For example, when the original target speed is 3200 rpm, the nearby 3270 rpm position may exhibit a local low-noise point because the airflow avoids the casing resonance area. Conversely, while some positions slightly below the base speed may experience a decrease in noise, insufficient airflow may lead to continuous accumulation of chip temperature and eventually trigger frequency throttling.

[0034] It's important to further clarify that in real-world scenarios, "lowest noise" shouldn't be the sole objective. Instead, the differences in heat dissipation reliability resulting from variations in fan speed in different directions must be considered. While both increasing and decreasing fan speed constitute deviations from the original rotational speed, their impacts on system thermal stability are entirely different. Increasing speed typically means improved airflow and cooling capacity, leading to higher overall system thermal safety even with slight noise changes. Conversely, decreasing speed may result in some noise reduction, but reduced airflow can lead to increased heat buildup, potentially even triggering CPU or GPU throttling in severe cases.

[0035] Preferably, in some implementations of the present invention, the method for obtaining the speed compensation state is as follows: taking any node time as the target node time, at the target node time, by comparing the difference between the initial fan blade speed data and the reference speed data, the speed direction interference state determination value at the target node time is calculated; by determining the positive or negative value of the speed direction interference state determination value, the speed compensation state of the corrugated centrifugal fan blade at the target node time is determined. The specific process is as follows: Preferably, in some implementations of the present invention, the method for obtaining the rotational speed direction interference state determination value is as follows: calculating the difference between the initial fan blade rotational speed data and the reference rotational speed data, and using this difference as the rotational speed direction interference state determination value at the target node time. The specific process is as follows: Take any node time as the target node time, and use the difference between the initial fan blade speed data and the reference speed data at the target node time as the speed direction disturbance state judgment value at the target node time.

[0036] It should be noted that the value for determining the disturbance state in the rotational speed direction has both positive and negative values.

[0037] Furthermore, if the value of the disturbance state determination in the rotational speed direction is negative, then the rotational speed compensation state of the corrugated centrifugal fan blade at the target node time is the deceleration compensation state; if the value of the disturbance state determination in the rotational speed direction is positive, then the rotational speed compensation state of the corrugated centrifugal fan blade at the target node time is the acceleration compensation state.

[0038] It should be noted that if the value of the disturbance state in the rotational speed direction is 0, this embodiment will not analyze and explain its node time by default, and the initial blade rotational speed data and the reference rotational speed data at the corresponding node time will not be considered in the subsequent analysis process.

[0039] Preferably, in some implementations of the present invention, the method for obtaining the heat dissipation compensation coefficient is as follows: the corrugated centrifugal fan blade has two speed compensation states at the node time: acceleration compensation state and deceleration compensation state; the magnitude of the preset fluctuation range of the reference speed data at the node time is used as the allowable disturbance value for compensation at the node time; the ratio of the speed direction disturbance state determination value to the allowable disturbance value for compensation is used as the state disturbance value at the node time; if the speed compensation state of the corrugated centrifugal fan blade at the node time is an acceleration compensation state, the degree of influence of the state disturbance value on the reverse heat dissipation of the acceleration compensation state is analyzed, and the heat dissipation acceleration compensation coefficient of the initial fan blade speed data of the corrugated centrifugal fan blade at the node time is calculated; if the speed compensation state of the corrugated centrifugal fan blade at the node time is a deceleration compensation state, the degree of influence of the state disturbance value on the positive heat dissipation of the acceleration compensation state is analyzed, and the heat dissipation deceleration compensation coefficient of the initial fan blade speed data of the corrugated centrifugal fan blade at the node time is calculated; the heat dissipation acceleration compensation coefficient and the heat dissipation deceleration compensation coefficient are combined to obtain the heat dissipation compensation coefficient of the initial fan blade speed data of the corrugated centrifugal fan blade at the node time. The specific process is as follows: Taking any given node as an example, a preset fluctuation range length is defined. The preset fluctuation range of the reference speed data at this node is: ; and will The permissible disturbance value at that node is used as the compensation permissible disturbance value; the ratio of the rotational speed direction disturbance state determination value to the compensation permissible disturbance value is used as the state disturbance value at that node. In this embodiment, [the following is used as an example]. This embodiment will be described using revolutions per second as an example, and no specific limitations will be made. It depends on the specific implementation situation.

[0040] It should be noted that if either the left or right side of the reference speed data does not meet the requirements... Given the given conditions, the minimum actual data range on both sides of the reference speed data is used as the basis for defining the preset fluctuation range.

[0041] Preferably, in some implementations of the present invention, the method for obtaining the heat dissipation acceleration compensation coefficient is as follows: a heat dissipation acceleration reference value is preset, and the difference between the heat dissipation acceleration reference value and the state disturbance value is used as the heat dissipation acceleration compensation coefficient of the initial blade speed data of the centrifugal fan blade at that node moment. The specific process is as follows: If the speed compensation state of the corrugated centrifugal fan blade at the node time is a speed-up compensation state, as an example, the heat dissipation speed-up compensation coefficient can be calculated using the following formula. :

[0042] In the formula, This indicates the preset heat dissipation acceleration benchmark value; This represents the preset weight parameters; This represents the state disturbance value at that node. This represents the normalization function.

[0043] It should be noted that this embodiment uses... , This example is used for illustration; no specific limitations are set in this embodiment. , It depends on the specific implementation situation.

[0044] Preferably, in some implementations of the present invention, the method for obtaining the heat dissipation deceleration compensation coefficient is as follows: a heat dissipation deceleration reference value is preset, and the sum of the heat dissipation acceleration reference value and the state disturbance value is used as the heat dissipation deceleration compensation coefficient of the initial fan blade speed data at the node time of the centrifugal fan blade. The specific process is as follows: If the speed compensation state of the corrugated centrifugal fan blade at the node time is a deceleration compensation state, as an example, the heat dissipation deceleration compensation coefficient can be calculated using the following formula. :

[0045] In the formula, This indicates the preset baseline value for heat dissipation reduction. This represents the preset weight parameters; This represents the state disturbance value at that node.

[0046] It should be noted that this embodiment uses... , This example is used for illustration; no specific limitations are set in this embodiment. , It depends on the specific implementation situation.

[0047] It should be noted that in this embodiment, both the heat dissipation speed-up compensation coefficient and the heat dissipation speed-down compensation coefficient are single heat dissipation compensation coefficients. For the aforementioned preset heat dissipation speed-up reference value and heat dissipation speed-down reference value, the heat dissipation speed-up reference value represents the basic heat dissipation gain reference amount provided by the fan in the speed-up state, while the heat dissipation speed-down reference value represents the basic heat dissipation attenuation penalty reference amount generated by the fan in the speed-down state. The heat dissipation speed-up reference value and heat dissipation speed-down reference value can be set according to the specific heat dissipation requirements and airflow characteristics of the heat sink. In this embodiment of the invention, to ensure that the positive gain of speed-up on heat dissipation and the negative penalty of speed-down on heat dissipation are of the same order of magnitude, The value range can be set to 1~2. The value range of can be set from 0.5 to 1. Additionally, the weighting parameter, used to adjust the influence of state disturbance values ​​on the heat dissipation compensation coefficient, reflects the sensitivity of the fan blade speed to deviation from the reference speed; its value range can be set from 0.6 to 0.9. In practical applications, the values ​​of the above parameters can also be obtained through calibration and fitting using data from previous acoustic and thermodynamic joint simulation experiments.

[0048] Thus, the heat dissipation compensation coefficient of the initial blade speed data of the corrugated centrifugal fan at the node moment is obtained by the above method.

[0049] Step S002: Based on the heat dissipation compensation coefficient and initial fan blade speed data at the node moment, analyze the overall performance of low noise and heat dissipation when the corrugated centrifugal fan blade rotates to the node moment, correct the initial fan blade speed data at the node moment, and calculate the corrected fan blade speed data of the corrugated centrifugal fan blade at the node moment; based on the fluctuation of the heat dissipation compensation coefficient of the overall initial fan blade speed data, combined with the fan blade speed correction data, analyze the balance between noise generated by the rotation of the corrugated centrifugal fan blade and heat dissipation, and calculate the global comprehensive evaluation index of the corrugated centrifugal fan blade.

[0050] It should be noted that after step S001 above, the system can now not only obtain the noise values ​​corresponding to each candidate speed within the neighborhood, but also simultaneously quantify the impact of different speed deviations on the system's thermal stability. Based on the above results, the next problem to be solved is: within the defined neighborhood, which specific speed should be selected to achieve the optimal balance between "noise gain" and "heat dissipation reliability"? In reality, the lowest noise point within the neighborhood is often not the optimal solution. For example, although a certain candidate speed can reduce noise by an additional 0.2dB, its corresponding airflow decreases significantly, which may lead to heat accumulation during long-term high-load operation of the equipment; while another candidate point, although slightly higher in noise, has a more stable heat dissipation capacity, resulting in a better overall operating experience. Therefore, it is necessary to couple "acoustic gain" and "thermal reliability cost" into a unified evaluation index to find the truly optimal speed suitable for long-term operation scenarios within the neighborhood.

[0051] It's important to further clarify that simply obtaining the locally optimal results for each reference speed is insufficient. During actual operation, the fan speed doesn't remain absolutely stable at a fixed value; instead, it constantly drifts slightly due to temperature fluctuations, load changes, and controller adjustments. Therefore, even if a particular speed point has low noise, if there are significant noise peaks in its neighborhood, the fan may quickly enter a high-noise region with even slight speed disturbances, leading to a decrease in overall quietness and stability. For example, a certain corrugated structure might correspond to a local noise trough at 4200 rpm, but if there are significant resonance peaks at 4250 rpm or 4150 rpm nearby, the fan is prone to repeatedly oscillating between the trough and the peak when the temperature control system dynamically adjusts the speed, resulting in noticeable noise jumps. Conversely, while some speed ranges may have slightly higher minimum noise values, their noise variations are smoother, and the overall acoustic performance remains stable even with speed disturbances. Therefore, the importance of different speed ranges to overall noise performance should not be determined solely by the noise level at a single point, but should also take into account the noise stability within its surrounding range.

[0052] Preferably, in some implementations of the present invention, the method for obtaining the blade speed correction data is as follows: combining the heat dissipation compensation coefficient at the node time with the initial blade speed data, calculating the joint evaluation index of the initial blade speed data at the node time; within a preset fluctuation range of the reference speed data at the node time, using speed data other than the initial blade speed data as reference speed data; traversing the joint evaluation indices of different reference speed data, and using the reference speed data with the smallest joint evaluation index as the blade speed correction data of the corrugated centrifugal fan at the node time. The specific process is as follows: Preferably, in some implementations of the present invention, the method for obtaining the joint evaluation index is as follows: the product of the heat dissipation compensation coefficient at the node time and the initial fan blade speed data is used as the joint evaluation index of the initial fan blade speed data at the node time. The specific process is as follows: The product of the heat dissipation compensation coefficient at that node and the initial fan blade speed data is used as the joint evaluation index of the initial fan blade speed data at that node.

[0053] Furthermore, within the preset fluctuation range of the reference speed data at this node, speed data other than the initial blade speed data are used as reference speed data. Referring to the method for obtaining the joint evaluation index, each reference speed data is traversed, and each reference speed data replaces the original initial blade speed data. New joint evaluation indices are calculated and used as the joint evaluation index for each reference speed data in turn. The reference speed data with the smallest joint evaluation index is used as the blade speed correction data of the corrugated centrifugal fan at this node, and the blade speed correction data of the corrugated centrifugal fan at all node times are obtained.

[0054] It should be noted that, within the preset fluctuation range Within this range, the default speed step size is 1. For example, the preset fluctuation range is... It contains 8 speed data.

[0055] Preferably, in some implementations of the present invention, the method for obtaining the global comprehensive evaluation index is as follows: Based on the stability of the numerical fluctuation of the heat dissipation compensation coefficient of the overall initial fan blade speed data, the joint evaluation volatility of the initial fan blade speed data is calculated; the heat dissipation compensation coefficient of the fan blade speed correction data at different node times is calculated; and the global comprehensive evaluation index of the corrugated centrifugal fan blade is calculated by combining the heat dissipation compensation coefficient of all fan blade speed correction data with the joint evaluation volatility. The specific process is as follows: Preferably, in some implementations of the present invention, the method for obtaining the joint evaluation volatility is as follows: the standard deviation of the heat dissipation compensation coefficient of the overall initial fan blade speed data is used as the joint evaluation volatility of the overall initial fan blade speed data. The specific process is as follows: The standard deviation of the heat dissipation compensation coefficients of the initial blade speed data at all node times is used as the joint evaluation volatility of the initial blade speed data as a whole. Referring to the method for obtaining the heat dissipation compensation coefficient, the initial blade speed data is replaced with blade speed correction data, and the heat dissipation compensation coefficient of the corrugated centrifugal fan blade at each node time is calculated.

[0056] Furthermore, as an example, the overall comprehensive evaluation index can be calculated using the following formula. :

[0057] In the formula, Represents the total amount at each node's time point; Indicates the first Fan blade speed correction data at each node time; Indicates the first Reference rotational speed data at each node time; Indicates the corrugated centrifugal fan blade in the first... The heat dissipation compensation coefficient of the fan blade speed correction data at each node time; This indicates taking the absolute value.

[0058] Because at the same node moment, the corrugated centrifugal fan blade is only in one speed compensation state (speed increase compensation state or speed decrease compensation state), therefore The value is determined based on the speed compensation state at the current node: when the node is in the acceleration compensation state... The value is taken as the heat dissipation acceleration compensation coefficient calculated at that node time; when that node time is in the deceleration compensation state... The value is the heat dissipation speed reduction compensation coefficient calculated at that node. In this way, the direction of rotational speed deviation is deeply linked to the reliability of heat dissipation, thereby finding the comprehensive optimal rotational speed that is truly suitable for long-term operation scenarios within the neighborhood.

[0059] Thus, the overall comprehensive evaluation index of the corrugated centrifugal fan blade is obtained through the above method.

[0060] Step S003: Based on the overall comprehensive evaluation index, intelligent balance control is performed on the noise and heat dissipation generated by the rotation of the corrugated centrifugal fan blades.

[0061] In one specific implementation of this invention, the general process of achieving intelligent balance control is as follows: the global comprehensive evaluation index of the corrugated centrifugal fan blades and all fan blade speed correction data are used as the latest training results of the experimental training model and input into the intelligent balance display module to realize the intelligent display of the speed of the corrugated centrifugal fan blades, thereby realizing intelligent balance control of the noise and heat dissipation generated by the rotation of the corrugated centrifugal fan blades.

[0062] It should be noted that the intelligent balance display module in this embodiment is existing technology and will not be described further in this embodiment. Please refer to [link / reference]. Figure 5 The diagram shows a before-and-after comparison of the effects. The horizontal axis represents the frequency of the sound, and the vertical axis represents the decibels at the corresponding frequency. Ch.4 indicates the strongest energy, Ch.1 indicates the medium energy, and Ch.3 indicates the weakest energy. Lab indicates a laboratory, meaning the data was collected in a controlled laboratory environment, not outdoors or in a production site. @ indicates the affiliation. V12 indicates Version12 or Vehicle12, representing the specific version number of the test task or the number of the tested object. L(A) indicates that A-weighting processing has been applied, which is a correction method that simulates the sensitivity of the human ear to different frequencies of sound. The left image shows the noise effect before improvement, and the right image shows the noise effect after improvement.

[0063] This concludes the embodiment.

[0064] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A low-noise heat sink based on corrugated centrifugal fan blades, comprising a low-noise heat sink body, characterized in that, The low-noise heat sink body includes a low-noise heat dissipation analysis module, which includes a data acquisition module, a computing chip, and an intelligent balance display module. The data acquisition module is connected to the signal input terminal of the computing chip, and the signal output terminal of the computing chip is connected to the intelligent balance display module. The intelligent balance display module is used to display the noise contained in the balance speed itself and the speed data after heat dissipation. The data acquisition module is used to acquire several initial fan blade speed data of the corrugated centrifugal fan blade. Each initial fan blade speed data corresponds to a node time, and each node time corresponds to a reference speed data, which is then transmitted to the computing chip. Based on the difference between the initial fan blade speed data and the reference speed data, the interference of the environment on the rotation direction of the corrugated centrifugal fan blade at different node times is analyzed, and the speed compensation state of the corrugated centrifugal fan blade at different node times is determined. For any node time, based on the speed compensation state of the corrugated centrifugal fan blade at the node time, combined with the change of the reference speed data within the preset fluctuation range, the gain effect of the machine's heat dissipation degree on low noise performance when the corrugated centrifugal fan blade rotates to the node time is analyzed, and the heat dissipation compensation coefficient of the initial fan blade speed data of the corrugated centrifugal fan blade at the node time is calculated. Based on the heat dissipation compensation coefficient and initial blade speed data at the node time, the overall performance of low noise and heat dissipation of the corrugated centrifugal fan blade at the node time is analyzed. The initial blade speed data at the node time is corrected, and the corrected blade speed data of the corrugated centrifugal fan blade at the node time is calculated. Based on the fluctuation of the heat dissipation compensation coefficient of the overall initial blade speed data, combined with the corrected blade speed data, the balance between noise generated by the rotation of the corrugated centrifugal fan blade and heat dissipation is analyzed, and the global comprehensive evaluation index of the corrugated centrifugal fan blade is calculated. Control is performed based on the overall comprehensive evaluation index, which is used to display the noise contained in the balance speed itself and the speed data after heat dissipation.

2. The low-noise heat sink based on corrugated centrifugal fan blades according to claim 1, characterized in that, The method for obtaining the speed compensation state is as follows: Take any node time as the target node time, and at the target node time, calculate the speed direction disturbance state judgment value at the target node time by comparing the degree of difference between the initial fan blade speed data and the reference speed data. By judging the positive and negative values ​​of the disturbance state determination value in the direction of rotational speed, the rotational speed compensation state of the corrugated centrifugal fan blade at the target node time is determined.

3. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 2, characterized in that, The method for obtaining the interference state determination value in the rotation direction is as follows: The difference between the initial blade speed data and the reference speed data is calculated and used as the speed direction disturbance state judgment value at the target node time.

4. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 2, characterized in that, The method for obtaining the heat dissipation compensation coefficient is as follows: The corrugated centrifugal fan blade has two speed compensation states at the node time: acceleration compensation state and deceleration compensation state; the size of the preset fluctuation range of the reference speed data at the node time is used as the compensation allowable disturbance value at the node time; the ratio of the speed direction disturbance state judgment value to the compensation allowable disturbance value is used as the state disturbance value at the node time. If the speed compensation state of the corrugated centrifugal fan blade at the node time is the speed-up compensation state, analyze the degree of influence of the state disturbance value on the reverse heat dissipation of the speed-up compensation state, and calculate the heat dissipation speed-up compensation coefficient of the initial fan blade speed data at the node time; if the speed compensation state of the corrugated centrifugal fan blade at the node time is the speed-down compensation state, analyze the degree of influence of the state disturbance value on the positive heat dissipation of the speed-up compensation state, and calculate the heat dissipation speed-down compensation coefficient of the initial fan blade speed data at the node time. By combining the heat dissipation acceleration compensation coefficient and the heat dissipation deceleration compensation coefficient, the heat dissipation compensation coefficient of the initial fan speed data of the corrugated centrifugal fan blade at the node moment is obtained.

5. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 4, characterized in that, The method for obtaining the heat dissipation acceleration compensation coefficient is as follows: A heat dissipation acceleration benchmark value is preset, and the difference between the heat dissipation acceleration benchmark value and the state disturbance value is used as the heat dissipation acceleration compensation coefficient of the initial fan speed data of the centrifugal fan blade at the node time.

6. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 4, characterized in that, The method for obtaining the heat dissipation rate reduction compensation coefficient is as follows: A heat dissipation deceleration baseline value is preset, and the sum of the heat dissipation acceleration baseline value and the state disturbance value is used as the heat dissipation deceleration compensation coefficient of the initial fan speed data of the centrifugal fan blade at the node time.

7. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 1, characterized in that, The method for obtaining the fan blade speed correction data is as follows: By combining the heat dissipation compensation coefficient at the node time with the initial fan blade speed data, a joint evaluation index for the initial fan blade speed data at the node time is calculated. Within the preset fluctuation range of the reference speed data at the node time, the speed data other than the initial fan blade speed data are used as reference speed data. The joint evaluation indexes of different reference speed data are iterated, and the reference speed data with the smallest joint evaluation index is used as the fan blade speed correction data of the corrugated centrifugal fan at the node time.

8. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 7, characterized in that, The method for obtaining the joint evaluation indicators is as follows: The product of the heat dissipation compensation coefficient at the node time and the initial fan blade speed data is used as the joint evaluation index of the initial fan blade speed data at the node time.

9. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 1, characterized in that, The method for obtaining the global comprehensive evaluation index is as follows: Based on the stability of the heat dissipation compensation coefficient of the overall initial fan blade speed data, the joint evaluation volatility of the initial fan blade speed data is calculated; the heat dissipation compensation coefficient of the fan blade speed correction data at different node times is calculated; and the global comprehensive evaluation index of the corrugated centrifugal fan blade is calculated by combining the heat dissipation compensation coefficient of all fan blade speed correction data with the joint evaluation volatility.

10. A low-noise heat sink based on corrugated centrifugal fan blades according to claim 9, characterized in that, The method for obtaining the volatility of the joint evaluation is as follows: The standard deviation of the heat dissipation compensation coefficient of the overall initial fan blade speed data is used as the joint evaluation variability of the overall initial fan blade speed data.

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