Blowing and sucking integrated fan and control system

Abstract

This invention discloses an integrated blower and control system, including a housing. The invention employs a guiding mechanism composed of arc plates and a fixed tube to guide airflow into a spiral duct, significantly increasing wind speed and solving the problem of insufficient airflow caused by unreasonable duct design in existing blowers. By setting up an efficiency analysis module, this invention accurately models and dynamically manages the charging efficiency of the battery in a simultaneous operation and charging mode. It can comprehensively calculate the optimal charging trigger threshold based on multiple parameters such as real-time power, temperature, and aging degree, effectively avoiding the inefficiency problems that may arise from traditional fixed low-power charging strategies. This achieves intelligent determination of charging timing while ensuring charging efficiency, thereby extending the battery's single-cycle operating time and reducing ineffective charging cycles. Furthermore, by setting up a fault early warning module, it employs a deviation coefficient method based on statistical process control and a time series trend analysis method to perform dual health monitoring of the core operating components of the blower.

Description

Technical Field

[0001] This invention relates to the field of fan technology, and more particularly to an integrated blowing and suction fan and its control system. Background Technology

[0002] Existing fans are general-purpose machines that rely on motors to drive fan blades to rotate, thereby achieving gas conveying or suction. They are widely used in various scenarios such as industrial production, home cleaning, and outdoor operations. Their core structure typically includes components such as a housing, motor, fan blades, and end caps. The motor drives the fan blades to rotate, creating airflow and thus achieving the function of blowing or vacuuming. Some products have already shown the prototype of an integrated design.

[0003] In existing technologies, most fans lack effective guiding structures in their duct design, resulting in chaotic airflow, significant wind power loss, and limited wind speed increase. At the same time, the assembly of the circuit board and motor lacks stable limiting and fixing structures, which can easily lead to loose connections and affect the stability of use. In addition, the assembly and disassembly of the motor output end are not convenient enough, and the charging structure of some products is poorly designed, which may obstruct the airflow and further affect the overall performance of the fan.

[0004] Based on this, an integrated blower and control system is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated blower and control system for blowing and suction in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An integrated blower and suction fan includes a housing with end caps connected to both ends. A motor is connected inside the housing, and a fan blade is connected to the output end of the motor. A circuit board is connected to one end of the motor, and a charging terminal is connected to the circuit board. A guide mechanism is connected between the motor and the inner wall of the housing to guide the airflow direction and increase the wind speed.

[0007] Preferably, one end of the motor is connected to a limit rod, and the circuit board has a limit hole that cooperates with the limit rod.

[0008] Preferably, the housing and end cap are provided with charging slots, and one end of the charging terminal is snapped into the charging slot.

[0009] Preferably, the output end of the motor is connected to a split bearing.

[0010] Preferably, the guiding mechanism includes an arc plate, one end of which is fixedly connected to the inner wall of the housing, and the other end of which is connected to a fixing tube, which is fixedly sleeved on the outside of the motor.

[0011] Preferably, a docking seat is connected inside the fixed tube, and one end of the motor is docked to the docking seat.

[0012] Preferably, the integrated blower control system includes an efficiency analysis module and a fault early warning module mounted on the circuit board; The efficiency analysis module integrates charging current, conversion efficiency, operating current, battery voltage, duration, and total power loss to establish a net charging efficiency model. It derives the expression for the efficiency loss rate and sets an allowable efficiency loss threshold. Finally, it derives a key SOC threshold. When the real-time monitored remaining battery power drops below this threshold, the system determines that a charging operation is required. The fault early warning module pre-calculates the mean and standard deviation of normal vibration frequency and the mean and standard deviation of normal temperature rise for each component based on historical health status data; it calculates the deviation coefficient between real-time vibration frequency and temperature rise and the health benchmark value, and triggers different levels of early warning based on the deviation range; it introduces time series trend analysis to improve the accuracy of early warning.

[0013] Preferably, the data analysis steps of the efficiency analysis module are as follows: M1: Preprocess the collected battery remaining capacity and charging power data to obtain valid data; based on the valid data, and combining charging current, battery voltage, operating current, charging equipment conversion efficiency, duration, and total power loss, establish the net charging efficiency. Mathematical model; M2: Get Remaining Battery Level ,temperature The degree of aging is directly related to the total power loss. And substitute the net charging efficiency In the formula, and combined with the lossless theory, the maximum efficiency is... The efficiency loss rate was calculated. Based on a preset efficiency loss threshold By deducing the critical threshold of the remaining battery power, When the real-time monitored remaining battery power drops to At this time, the control module determines that the battery needs to be charged.

[0014] Preferably, the data analysis steps of the fault early warning module are as follows: N1: Historical data on the vibration frequency and temperature rise of components under healthy conditions are obtained, and the mean and standard deviation of normal vibration frequency and normal temperature rise of each component are calculated. N2: Real-time acquisition of vibration frequency, temperature, and ambient temperature of each component, and calculation of vibration frequency abnormality deviation coefficient. and temperature rise abnormality deviation coefficient , The serial number corresponds to the component; status determination and warning are based on whether the deviation coefficient exceeds the preset level threshold. N3: Calculate the slope of the real-time vibration frequency and temperature rise within a certain time window. and If the slope remains positive and the corresponding real-time deviation coefficient continues to approach the warning threshold, then a fault or overheating risk is identified and an early warning is issued.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This application adopts a guiding mechanism composed of arc plates and fixed tubes to guide airflow to form a spiral duct, which effectively reduces wind power loss, significantly increases wind speed, and solves the problem of insufficient wind power caused by unreasonable design of existing fan ducts.

[0016] 2. This application improves the stability of circuit board connection, avoids the charging structure from blocking the air duct, and realizes convenient disassembly and assembly of motor output by adopting a limiting structure with limiting rod and limiting hole, axially set charging groove and split bearing, while ensuring the stability of motor assembly. It makes up for the defects of poor assembly stability, inconvenient disassembly and assembly and easy interference of air duct of existing fans.

[0017] 3. This application sets up an efficiency analysis module to accurately model and dynamically manage the charging efficiency of the battery in the running and charging mode. It can calculate the optimal charging trigger threshold based on multiple parameters such as real-time power, temperature, and aging degree. This effectively avoids the inefficiency problem that may be caused by the traditional fixed low power charging strategy. It realizes intelligent determination of charging time while ensuring charging efficiency, thereby extending the battery's single running time, reducing invalid charging cycles, and improving the overall battery life.

[0018] 4. This application sets up a fault early warning module and adopts the deviation coefficient method and time series trend analysis method based on statistical process control to perform dual health monitoring of the core operating components of the wind turbine. It can not only identify sudden faults and overheating by the instantaneous deviation between real-time data and health benchmarks, but also achieve predictive early warning of potential early faults by analyzing the changing trends of vibration and temperature. This greatly improves the operational reliability of the wind turbine, reduces unplanned downtime, facilitates preventive maintenance, and reduces maintenance costs and safety risks in long-term use. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the fan provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the circuit board connection provided according to an embodiment of the present invention is shown; Figure 3A schematic diagram of the structure of the fixed tube connection provided according to an embodiment of the present invention is shown; Figure 4 An exploded structural diagram of a fixed pipe connection provided according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of the split bearing connection provided according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of the structure of the fan blade connection provided according to an embodiment of the present invention is shown; Figure 7 A system flowchart according to an embodiment of the present invention is shown.

[0020] Legend: 1. Housing; 2. End cap; 3. Charging slot; 4. Circuit board; 5. Arc plate; 6. Charging end; 7. Limiting rod; 8. Motor; 9. Fixing tube; 10. Limiting hole; 11. Fan blade; 12. Connecting seat; 13. Split bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1-6 The present invention provides a technical solution: The blower includes a housing 1 with end caps 2 connected to both ends of the housing 1. The end caps 2 can stably assemble the motor 8 into the housing 1, and one end of the end cap 2 is an air outlet. The motor 8 is connected inside the housing 1, and the output end of the motor 8 is connected to a fan blade 11. One end of the motor 8 is connected to a circuit board 4, and a charging terminal 6 is connected to the circuit board 4. A guide mechanism is connected between the motor 8 and the inner wall of the housing 1 to guide the airflow direction and increase the wind speed.

[0023] Specifically, such as Figure 3 As shown, one end of the motor 8 is connected to a limit rod 7, and the circuit board 4 has a limit hole 10 that cooperates with the limit rod 7. By setting the limit rod 7, the circuit board 4 is limited, thus ensuring the firmness of the connection of the circuit board 4.

[0024] Specifically, such as Figure 1 and Figure 3As shown, a charging slot 3 is provided on the housing 1 and the end cover 2. One end of the charging terminal 6 is snapped into the charging slot 3. The structure of the charging slot 3 is oriented along the axial direction of the output end of the motor 8. This structure can minimize wind resistance, avoid blocking the air duct, affect the wind speed, and reduce wind power loss.

[0025] Specifically, such as Figure 5 As shown, the output end of motor 8 is connected to a split bearing 13. The split structure enables convenient assembly and disassembly of the output end of motor 8, while also providing radial positioning and rotational support for the output end of motor 8.

[0026] Specifically, such as Figure 3 As shown, the guiding mechanism includes an arc plate 5. One end of the arc plate 5 is fixedly connected to the inner wall of the housing 1, and the other end of the arc plate 5 is connected to a fixing tube 9. The fixing tube 9 is fixedly sleeved on the outside of the motor 8. Multiple sets of arc plates 5 are provided, and multiple sets of arc plates 5 are connected around the outside of the fixing tube 9, which can both guide the airflow and fix the fixing tube 9.

[0027] Specifically, such as Figure 4 As shown, a docking seat 12 is connected inside the fixed tube 9, and one end of the motor 8 is docked on the docking seat 12. The stability of the motor 8 connection is improved by setting the docking seat 12.

[0028] In summary, the integrated blower and suction fan provided in this embodiment can drive the fan blades 11 to rotate after the motor 8 of the fan is started. The fan blades 11 can be adjusted to blow or suck up dust by forward and reverse rotation. When the fan blades 11 rotate, an air duct is formed between the motor 8 and the housing 1. When the air comes into contact with the arc plate 5, it can flow along the arc plate 5 and form a spiral air duct, which further improves the air force and reduces the loss.

[0029] The circuit board 4 that controls the operation of the motor 8 is limited by the limiting rod 7, and the circuit board 4 is fixedly connected to the charging end 6. The charging end 6 is positioned by the snap-fit ​​of the charging groove 3 on the housing 1 and the end cover 2, thereby fixing the structure of the charging end 6 and further ensuring the structural connection stability of the circuit board 4.

[0030] Example 2: Please refer to Figure 7 The integrated blower control system has an efficiency analysis module and a fault early warning module on circuit board 4. The efficiency analysis module integrates charging current, conversion efficiency, operating current, battery voltage, duration, and total power loss to establish a net charging efficiency model. It derives the expression for the efficiency loss rate and sets an allowable efficiency loss threshold. Finally, it derives a key SOC threshold. When the real-time monitored remaining battery power drops below this threshold, the system determines that a charging operation is required. The fault early warning module pre-calculates the mean and standard deviation of normal vibration frequency and the mean and standard deviation of normal temperature rise for each component based on historical health status data; it calculates the deviation coefficient between real-time vibration frequency and temperature rise and the health benchmark value, and triggers different levels of early warning based on the deviation range; it introduces time series trend analysis to improve the accuracy of early warning. The charging end 6 is equipped with a power sensor to monitor the remaining battery power and charging power in real time, and preprocesses the acquired real-time data, using the preprocessed data as the valid data for the corresponding item. Preprocessing: The collected data is sorted according to the collection time, and corresponding items collected at the same time are processed. averaging the data and standard deviation The calculation, and the mean obtained from the calculation. and standard deviation Collect data fluctuation range for corresponding items The system is configured to compare the collected data for a given item with its fluctuation range, mark data outside the fluctuation range as outliers, and record the number of outliers. ,like If the collected data is abnormal, the data will be re-tested; if If outliers are removed, the mean of the remaining corresponding test data after outlier removal is calculated. The calculation, and the mean obtained from the calculation. As the corresponding data detected at the corresponding time; The wind turbine battery consumes electricity during use. When the battery level is lower than a certain value, charging while running the wind turbine will affect the charging efficiency. Net charging efficiency while running and charging ,in This refers to the actual electrical energy stored in the battery. The total electrical energy input to the charging device. The charging current output by the charging device. For the conversion efficiency of charging equipment, This refers to the current consumption during wind turbine operation. This is the battery's nominal voltage. For charging and running time, This represents the total power loss. The output voltage for the charging device; Total power loss It is a key intermediate variable affecting efficiency, related to the remaining power. ,temperature The degree of aging is directly related to it. The net charging current , This refers to the number of battery cycles. , The resistance of the battery itself, Fixed resistors for charging circuits, interfaces, etc.; battery internal resistance. ,in The internal resistance of the new battery under standard conditions. Temperature under standard environmental conditions , , The proportionality coefficient (determined by the battery material; lithium batteries typically...) , , (by fitting specific values ​​through experiments). Total power loss Substituting the formula into the net charging efficiency From the formula, we get Assume the maximum efficiency is achieved through lossless theory. Efficiency loss rate If the allowable efficiency loss threshold ,but The derivation yields ,in Then we get The maximum value is Determine the remaining battery power Descending to At this time, the wind turbine battery is charged to prevent the power level from dropping too low and affecting the charging efficiency.

[0031] Vibration sensors and temperature sensors are installed at arc plate 5, fixed tube 9, split bearing 13, and motor 8 to collect vibration frequency and temperature data during operation. Under healthy conditions, the vibration frequency of the components is stable, as indicated by their serial numbers. These represent four components: arc plate 5, fixed tube 9, split bearing 13, and motor 8. Average normal vibration frequency of each component , The number of samples taken during a healthy state. For the first time in a healthy state The vibration frequency of the second sample; then based on the mean... Obtain the standard deviation of vibration frequency under healthy conditions , No. Average normal temperature rise of each component , For the first The ambient temperature at the time of the second sampling For the first time in a healthy state The temperature of the second sample, and then based on the mean. Obtain the standard deviation of temperature under healthy conditions ; Real-time acquisition of vibration frequency Component temperature Ambient temperature The abnormal deviation coefficient of the vibration frequency ,when When no fault risk is detected, it is determined that there is no risk of failure. If a mild abnormality is detected, continuous monitoring is required; when When a severe anomaly is detected, indicating a fault, an early warning is triggered. Abnormal deviation coefficient of component temperature rise ,when When no fault risk is detected, it is determined that there is no risk of failure. If mild overheating is detected, continuous monitoring is required; when When the system detects severe overheating and a fault, an early warning is triggered. Relying solely on a single set of data may lead to misjudgments; it is necessary to combine time series trend changes to predict early faults, at the current moment. Next, the Vibration frequency trend slope of individual components ,in To adjust the sliding window size, The sample number within the window, and the mean of the sample numbers within the window. The mean of the vibration frequency within the window , For the first Each component at the "current moment" "Push forward" Real-time vibration frequency at the time of the next sample; current moment Next, the Temperature trend slope of each component ,in For the first Each component at the "current moment" "Push forward" Real-time temperature at the time of the second sampling For the corresponding ambient temperature, the first The average difference between the component temperature and the ambient temperature for each component ; like And it continues to increase, at the same time If the difference between the value and the deviation coefficient comparison value 2 gradually decreases over time, it indicates a potential fault risk, and an early warning operation is initiated. And it continues to increase, at the same time The difference between the value of the deviation coefficient and the value of 2 gradually decreases over time, indicating an overheating risk and prompting an early warning operation.

[0032] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combined blowing and sucking fan comprising a casing (1), characterized in that, The housing (1) has end caps (2) connected to both ends. The housing (1) has a motor (8) connected inside. The output end of the motor (8) is connected to a fan blade (11). One end of the motor (8) is connected to a circuit board (4). The circuit board (4) has a charging terminal (6) connected to it. The motor (8) and the inner wall of the housing (1) are connected to a guide mechanism for guiding the airflow direction and increasing the wind speed. The output end of the motor (8) is connected to a split bearing (13). The guide mechanism includes an arc plate (5). One end of the arc plate (5) is fixedly connected to the inner wall of the housing (1). The other end of the arc plate (5) is connected to a fixing tube (9). The fixing tube (9) is fixedly sleeved on the outside of the motor (8). It also includes an efficiency analysis module and a fault early warning module mounted on the circuit board (4); The efficiency analysis module establishes a net charging efficiency model by comprehensively considering charging current, charging equipment conversion efficiency, operating current, battery voltage, duration, and total power loss. It derives an expression for the efficiency loss rate, sets an allowable efficiency loss threshold, and ultimately derives a key critical threshold. When the real-time monitored remaining battery power drops to this critical threshold The system will determine that charging is required when the following conditions are met; The fault warning module pre-calculates the mean and standard deviation of the normal vibration frequency and the mean and standard deviation of the normal temperature rise of the arc plate (5), the fixed tube (9), the split bearing (13) and the motor (8) based on historical health status data; calculates the deviation coefficient between the real-time vibration frequency and temperature rise and the health benchmark value, and triggers different levels of warnings according to the deviation range; and introduces time series trend analysis to improve the accuracy of the warning.

2. The blow-and-suck integrated fan according to claim 1, wherein One end of the motor (8) is connected to a limiting rod (7), and the circuit board (4) has a limiting hole (10) that cooperates with the limiting rod (7).

3. The blow-and-suck integrated fan according to claim 1, wherein Charging slots (3) are provided on the housing (1) and end cap (2), and one end of the charging terminal (6) is snapped into the charging slot (3).

4. The blow-and-suck integrated fan according to claim 1, wherein The fixed tube (9) is connected to a docking seat (12), and one end of the motor (8) is docked to the docking seat (12).

5. The integrated blowing and sucking fan control system according to claim 1, wherein The data analysis steps of the efficiency analysis module are as follows: M1: preprocessing the collected battery residual capacity and charging power data to obtain effective data; based on the effective data, a mathematical model of net charging efficiency is established in combination with charging current, battery voltage, operating current, charging device conversion efficiency, time length and total loss power; ​ M2: Obtain the remaining power , temperature , degree of aging directly related total power loss , and substitute the net charging efficiency formula, and combine the lossless theory maximum efficiency efficiency loss rate ; based on a preset efficiency loss threshold , the critical threshold of the remaining battery power is deduced ; when the real-time monitored remaining battery power drops to , the control module determines that the battery needs to be charged.

6. The blowing and sucking integrated fan control system according to claim 5, wherein The data analysis steps for the fault early warning module are as follows: N1: Obtain historical data on the vibration frequency and temperature rise of the arc plate (5), fixed tube (9), split bearing (13) and motor (8) under healthy conditions, and calculate the mean and standard deviation of the normal vibration frequency and the mean and standard deviation of the normal temperature rise of the arc plate (5), fixed tube (9), split bearing (13) and motor (8). N2: Real-time acquisition of vibration frequency, temperature and ambient temperature of arc plate (5), fixed tube (9), split bearing (13) and motor (8), and calculation of vibration frequency abnormality deviation coefficient respectively. and temperature rise abnormality deviation coefficient , The serial number corresponds to the component; based on the vibration frequency abnormal deviation coefficient. and temperature rise abnormality deviation coefficient The status is determined and an early warning is issued based on whether the preset threshold level is exceeded. N3: Calculate real-time vibration frequency and temperature trend slope of vibration frequency over a certain time window and temperature trend slope ; If the slope of the vibration frequency trend and temperature trend slope The coefficient of variation of the vibration frequency is consistently positive and corresponds to an abnormal deviation coefficient. and temperature rise abnormality deviation coefficient If the temperature continues to approach the warning threshold, it is determined that there is a risk of malfunction or overheating and an early warning is issued.

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