Flow calibration device for a suction unit

Abstract

The utility model discloses a kind of flow calibration devices of suction unit, and suction unit includes multiple suction channels, comprising: linear motion mechanism;Flow detection component is used to detect the current flow of airflow in suction unit, slidingly connected in linear motion mechanism, configured to selectively communicate with any suction channel;Path control unit is connected with linear motion mechanism, configured to control drive linear motion mechanism;Calibration unit is connected with flow detection component and suction unit, configured as: receiving current flow, and comparing current flow with set flow, according to flow comparison result, determine the first flow correction of airflow in suction channel;Opening degree adjusting piece is arranged at the inlet of suction unit, for controlling the flow of airflow of the inlet of suction channel, and is connected with calibration unit communication. The utility model realizes the efficient automation measurement of multiple channel flow, while improving calibration efficiency, ensures the consistency and accuracy of multiple channel flow.

Description

Technical Field

[0001] This utility model relates to the field of tobacco experimental equipment testing technology, and in particular to a flow calibration device for a smoking unit. Background Technology

[0002] Smoking machines are commonly used equipment in the field of tobacco experimental research. Based on their basic structure, they can generally be divided into traditional smoking machines and rotary smoking machines, which can simultaneously or alternately smoke multiple traditional or heated cigarettes. This design helps to minimize experimental errors caused by differences in the smoking environment between different cigarettes while conducting experiments efficiently, offering advantages such as high efficiency, convenience, and relatively small experimental errors.

[0003] However, existing smoking machines typically require manual calibration of the flow rate of each smoking unit using a soap film flow meter before conducting cigarette smoking experiments to ensure that the flow rate of each unit reaches the preset value. In particular, there is a typical scenario where the collection bottle needs to be replaced frequently: for example, in an experiment where a cigarette is smoked in eight puffs, and each puff of smoke needs to be collected independently, a new conical collection bottle needs to be replaced after each puff. In such experiments, even slight differences in parameters such as the volume of the collection bottle and the resistance of the connecting air path can cause the actual flow rate to deviate from the set value after each replacement. Therefore, existing technology requires recalibrating the flow rate after each replacement of the collection bottle; otherwise, it will directly affect the accuracy of the flow rate in subsequent smoking processes, thus introducing experimental errors. Although from the perspective of the cigarette, it is a complete smoking process, from the perspective of the collection bottle, it is actually eight independent experimental operations.

[0004] It can be seen that this manual calibration method has obvious shortcomings:

[0005] 1. Time-consuming: Manually calibrating a large number of suction units sequentially significantly extends the preparation time before the experiment.

[0006] 2. Errors are easily introduced: Differences in operating habits and experience among different operators can introduce varying degrees of human error, affecting the consistency of calibration accuracy.

[0007] 3. Inefficiency: In large-scale, continuous cigarette smoking experiments, frequent and time-consuming flow calibration becomes a bottleneck restricting experimental efficiency.

[0008] Therefore, there is an urgent need to develop a method and apparatus that can overcome the above-mentioned defects and achieve rapid, accurate and automated flow calibration in order to improve the experimental efficiency and calibration accuracy of the smoking machine. Utility Model Content

[0009] This invention proposes a flow calibration device, method, electronic device, and medium for a suction unit to solve the above-mentioned problems.

[0010] In a first aspect, embodiments of this utility model disclose a flow calibration device for a suction unit, wherein the suction unit includes multiple suction channels, and the flow calibration device includes:

[0011] Linear motion mechanism;

[0012] A flow detection component is used to detect the current flow rate of airflow within the suction unit. The flow detection component is slidably connected to the linear motion mechanism and is configured to selectively communicate with any suction channel.

[0013] The path control unit, connected to the linear motion mechanism, is configured to control the drive linear motion mechanism to move the flow detection components to each suction channel.

[0014] The calibration unit, connected to the flow detection component and the suction unit, is configured as follows:

[0015] The system receives the current flow rate of the airflow in each suction channel as measured by the flow detection component, compares the current flow rate with the set flow rate, and determines the first flow rate correction amount of the airflow in the suction channel based on the comparison result of the current flow rate and the set flow rate.

[0016] An opening adjustment element is located at the inlet of the suction unit. The opening adjustment element is used to control the airflow rate at the inlet of the suction channel. The opening adjustment element is communicatively connected to the calibration unit.

[0017] By adopting the above technical solution, the flow calibration device of the suction unit provided by this utility model drives the flow detection component to automatically inspect each suction channel through a linear motion mechanism and a path control unit, thereby realizing efficient and automated measurement of multi-channel flow. The calibration unit calculates the accurate correction amount by comparing the current flow with the set flow and controls the inlet opening adjustment component to form a closed-loop control. While improving calibration efficiency, it ensures the consistency and accuracy of multi-channel flow, significantly enhancing the working reliability and automation level of the suction system.

[0018] According to another specific embodiment of the present invention, the linear motion mechanism includes:

[0019] Two vertical slide rails are located on opposite sides of the suction unit;

[0020] The horizontal slide rail is located above the suction unit. Both ends of the horizontal slide rail are slidably connected to two vertical slide rails to slide along the extension direction of the vertical slide rails.

[0021] The slider is slidably connected to the transverse slide rail and slides along the extension direction of the transverse slide rail. The slider is fixed to the flow detection component.

[0022] According to another specific embodiment of the present invention, the flow detection component includes:

[0023] An electronic flow meter has an inlet and an outlet that are interconnected.

[0024] The trachea has an interconnected trachea inlet and trachea outlet, with the trachea outlet fixed to the air inlet of the electronic flow meter.

[0025] A sealing connection assembly is disposed in a sealed and continuous manner between the tracheal inlet and the suction channel.

[0026] According to another specific embodiment of the present invention, an electromagnet is provided at one end of the sealing connection assembly connected to the suction channel. The electromagnet is configured to automatically attract the suction channel when energized and to separate from the suction channel when de-energized.

[0027] According to another specific embodiment of this utility model, the sealing connection assembly includes: a first sleeve and a second sleeve that are interconnected.

[0028] The outer periphery of the first sleeve is formed with a first annular rib, a second annular rib and a third annular rib that are separated from each other. A first annular groove is formed between the first annular rib and the second annular rib, and a second annular groove is formed between the second annular rib and the third annular rib.

[0029] The second sleeve is fitted over the outside of the first sleeve. The inside of the second sleeve is formed with a channel for the suction unit to be inserted. The channel extends into the inside of the first sleeve and abuts against the inner wall of the first sleeve. The inner wall of the second sleeve forms a third annular groove corresponding to the position of the second annular groove.

[0030] The first sealing ring is housed within the annular space formed by the first annular groove and the inner wall of the second sleeve;

[0031] The second sealing ring is housed within the annular space formed by the third annular groove and the second annular groove.

[0032] According to another specific embodiment of the present invention, a limiting groove is formed on the circumferential surface of the second annular rib, and the limiting groove extends along the axial direction of the first sleeve; the inner wall of the second sleeve is formed with a protrusion that matches the limiting groove, and the first sleeve and the second sleeve slide into the limiting groove through the protrusion and cooperate with the limiting groove to achieve circumferential limiting.

[0033] According to another specific embodiment of the present invention, the circumferential surface of the third annular rib has a cross-section extending along the axial direction of the first sleeve, and the position of the cross-section corresponds to the position of the limiting groove.

[0034] According to another specific embodiment of the present invention, it further includes:

[0035] The pitch adjustment mechanism is used to adjust the tilt angle of the trachea. The pitch adjustment mechanism is connected between the flow detection component and the slider of the linear motion mechanism.

[0036] According to another specific embodiment of the present invention, it further includes:

[0037] The gas path control unit is connected to the flow detection component and is used to control the connection or disconnection of the gas path between the flow detection component and multiple suction channels.

[0038] According to another specific embodiment of the present invention, it further includes:

[0039] The counter is connected in communication with the calibration unit and is used to count the number of calibrations performed by the calibration unit.

[0040] According to another specific embodiment of the present invention, it further includes:

[0041] The main control unit communicates with the path control unit, gas path control unit, suction unit, and calibration unit.

[0042] According to another specific embodiment of the present invention, a display unit is also included, which is connected to the main control unit. The display unit is used to display one or more parameters among the set flow rate, the flow rate of the airflow in each suction channel, the first flow rate correction amount corresponding to each suction channel, and the calibration status information of each suction channel. Attached Figure Description

[0043] Figure 1 This diagram shows the structure of the flow detection device of the suction unit in an embodiment of the present invention.

[0044] Figure 2 This diagram shows a modular structure of the flow detection device of the suction unit in an embodiment of the present invention.

[0045] Figure 3 This diagram illustrates the position of the flow detection component when it is moved to communicate with a suction unit in an embodiment of the present invention.

[0046] Figure 4 This diagram illustrates the position of the flow detection component in an embodiment of the present invention when it is moved to communicate with another suction unit.

[0047] Figure 5 A three-dimensional structural schematic diagram of the flow detection component in an embodiment of this utility model is shown;

[0048] Figure 6A partial cross-sectional schematic diagram of the flow detection component in an embodiment of this utility model is shown;

[0049] Figure 7 This diagram shows a three-dimensional structural schematic of the first sleeve in the flow detection assembly according to an embodiment of the present invention.

[0050] Figure 8 A three-dimensional structural diagram of the second sleeve in the flow detection assembly of this utility model embodiment is shown;

[0051] Figure 9 A three-dimensional structural schematic diagram of the pitch adjustment mechanism in an embodiment of this utility model is shown;

[0052] Figure 10 A flowchart illustrating the flow detection method of the suction unit in an embodiment of this utility model is shown.

[0053] Figure 11 This diagram illustrates the flow calibration process in the flow detection method of the suction unit in this embodiment of the invention.

[0054] Figure 12 This diagram illustrates the flow verification process in the flow detection method of the suction unit in this embodiment of the present invention.

[0055] Figure 13 A schematic diagram of the electronic device in an embodiment of this utility model is shown.

[0056] Suction unit 1; Suction channel 11; Linear motion mechanism 2; Vertical slide rail 21; Horizontal slide rail 22; Slider 23; Flow detection component 3; Electronic flow meter 31; Air tube 32; Sealing connection component 33; First sleeve 331; First annular rib 3311; Second annular rib 3312; Third annular rib 3313; First annular groove 3314; Second annular groove 3315; Second sleeve 332; Channel 3321; Third annular groove 3322; Protrusion 3323; First sealing ring 333; Second sealing ring 334; Pitch adjustment mechanism 34; Base 341; Connecting shaft 342; Connecting block 343; Magnet 344; Main control unit 4; Path control unit 41; Calibration unit 42; Air path control unit 43; Counter 44; Display unit 45; Opening adjustment component 5; Electronic device 6; Memory 61; Processor 62. Detailed Implementation

[0057] The following describes the embodiments of this utility model through specific examples. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0058] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0059] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0060] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0061] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0062] Firstly, reference Figure 1 , Figure 2As shown, this utility model discloses a flow calibration device for a suction unit 1. The suction unit 1 includes multiple suction channels 11. The flow calibration device includes: a linear motion mechanism 2, a flow detection component 3, a path control unit 41, a calibration unit 42, and an opening adjustment component 5. The flow detection component 3 is used to detect the current flow rate of the airflow in the suction unit 1. The flow detection component 3 is slidably connected to the linear motion mechanism 2 and is configured to selectively communicate with any suction channel 11. The path control unit 41 is connected to the linear motion mechanism 2 and is configured to control the drive. A linear motion mechanism 2 moves the flow detection component 3 to each suction channel 11; a calibration unit 42 is connected to the flow detection component 3 and the suction unit 1, and the calibration unit 42 is configured to: receive the current flow rate of the airflow in each suction channel 11 measured by the flow detection component 3, compare the current flow rate with the set flow rate, and determine the first flow rate correction amount of the airflow in the suction channel 11 based on the comparison result of the current flow rate and the set flow rate; an opening adjustment component 5 is provided at the inlet of the suction unit 1, and the opening adjustment component 5 is used to control the flow rate of the airflow at the inlet of the suction channel 11, and the opening adjustment component 5 is communicatively connected to the calibration unit 42.

[0063] In the above manner, the flow calibration device of the suction unit 1 provided by this utility model drives the flow detection component 3 to automatically inspect each suction channel 11 through the linear motion mechanism 2 and the path control unit 41, realizing efficient and automated measurement of multi-channel flow; the calibration unit 42 calculates the accurate correction amount by comparing the current flow with the set flow, and controls the inlet opening adjustment component 5 to form a closed-loop control, which improves the calibration efficiency while ensuring the consistency and accuracy of multi-channel flow, and significantly enhances the working reliability and automation level of the suction system.

[0064] In some embodiments, the opening adjustment member 5 can also be directly connected to the main control unit 4. The calibration unit 42 feeds back the determined first correction amount to the main control unit 4. The main control unit 4 controls the opening of the opening adjustment member 5. Technicians can flexibly select the connection relationship of the opening adjustment member 5 as needed. This embodiment does not limit this.

[0065] In the above embodiments, reference Figure 1 , Figure 3As shown, the linear motion mechanism 2 includes: two vertical slide rails 21, a horizontal slide rail 22, and a slider 23. The two vertical slide rails 21 are located on opposite sides of the suction unit 1; the horizontal slide rail 22 is located above the suction unit 1, and its two ends are slidably connected to the two vertical slide rails 21 respectively, so as to slide along the extension direction of the vertical slide rails 21; the slider 23 is slidably connected to the horizontal slide rail 22, so as to slide along the extension direction of the horizontal slide rail 22, and the slider 23 is fixed to the flow detection component 3. In this embodiment, the linear motion mechanism 2, through the combined movement of the slider 23 on the vertical slide rails 21 and the horizontal slide rail 22, allows the flow detection component 3 to be precisely moved to any point in the working plane above the suction unit 1, and can be simultaneously applied to flow detection in both rotary and linear suction machines. This mechanism allows a single flow detection component 3 to cover the entire working area of ​​the suction unit 1 without the need for multiple sensors (such as...). Figure 4 A rotary suction unit 1 is shown, in which the linear motion mechanism 2 can drive the flow detection component 3 to move to communicate with the suction channel 11. Through program control, it can quickly and automatically move sequentially to multiple predetermined detection points for measurement, greatly improving detection efficiency and automation, and replacing tedious manual operation.

[0066] In this embodiment, the driving method of slider 23 can refer to the prior art, and the positioning of slider 23 after it moves to the designated position can also refer to the prior art, such as positioning by bolts or other methods. This embodiment does not limit this.

[0067] In the above embodiments, such as Figure 5As shown, the flow detection component 3 includes: an electronic flow meter 31, an air tube 32, and a sealing connection component 33. The electronic flow meter 31 has an inlet and an outlet that are interconnected; the air tube 32 has an inlet and an outlet that are interconnected, and the outlet is fixed to the inlet of the electronic flow meter 31; the sealing connection component 33 is sealed and connected between the inlet of the air tube and the suction channel 11. In this embodiment, by providing the sealing connection component 33, it is beneficial to ensure the sealing of the connection between the electronic flow meter 31 and the suction channel 11, thereby improving the accuracy of flow detection. In the above embodiment, an electromagnet (not shown in the figure) is provided at one end of the sealing connection component 33 connected to the suction channel 11. The electromagnet is configured to automatically attract to the suction channel 11 when energized and separate from the suction channel 11 when de-energized. In this embodiment, the sealing connection assembly 33 and the suction channel 11 are connected by energizing the electromagnet, and separated by de-energizing. This eliminates the need for manual operation to connect the sealing connection assembly 33 and the suction channel 11, increasing the automation level and reducing human intervention. In some embodiments, a sealing layer may be provided on the surface where the electromagnet and the suction channel 11 meet to prevent air leakage between them.

[0068] In the above embodiments, such as Figure 6 , Figure 7 and Figure 8 As shown, the sealing connection assembly 33 includes: a first sleeve 331 and a second sleeve 332 that are interconnected, a first sealing ring 333 and a second sealing ring 334. The outer periphery of the first sleeve 331 is formed with a first annular rib 3311, a second annular rib 3312, and a third annular rib 3313 that are spaced apart. A first annular groove 3314 is formed between the first annular rib 3311 and the second annular rib 3312, and a second annular groove 3315 is formed between the second annular rib 3312 and the third annular rib 3313. The second sleeve 332 is sleeved on the first sleeve. Outside of 331, the second sleeve 332 has a channel 3321 formed inside for the insertion of the suction unit 1. The channel 3321 extends into the interior of the first sleeve 331 and abuts against the inner wall of the first sleeve 331. The inner wall of the second sleeve 332 forms a third annular groove 3322 corresponding to the position of the second annular groove 3315. The first sealing ring 333 is housed in the annular space formed by the first annular groove 3314 and the inner wall of the second sleeve 332. The second sealing ring 334 is housed in the annular space formed by the third annular groove 3322 and the second annular groove 3315.

[0069] In this manner, the second sleeve 332 is fitted onto the outside of the first sleeve 331 and extends into the inside of the first sleeve 331, abutting against the inner wall of the first sleeve 331. This forms a double mating surface: an outer mating surface where the inner wall of the second sleeve 332 mates with the outer wall of the first sleeve 331, and an inner mating surface where the channel 3321 of the second sleeve 332 mates with the inner wall of the first sleeve 331. This large-area interference or tight fit generates enormous static friction and a mechanical interlocking effect, making the two sleeves extremely difficult to pull apart axially or wobble radially, resulting in extremely high connection rigidity. The complex multi-rib / groove structure and double sealing ring design together constitute a high-damping system. When subjected to vibration or impact, energy is absorbed and dispersed by multiple contact surfaces and elastic sealing rings, preventing stress concentration at a single point, effectively preventing the connection from loosening due to mechanical fatigue, and also improving the sealing performance of the connection.

[0070] In the above embodiment, a limiting groove 3316 is formed on the circumferential surface of the second annular rib 3312, and the limiting groove 3316 extends along the axial direction of the first sleeve 331; the inner wall of the second sleeve 332 is formed with a protrusion 3323 that matches the limiting groove 3316. The first sleeve 331 and the second sleeve 332 slide into the limiting groove 3316 along the axial direction through the protrusion 3323 and cooperate with the limiting groove 3316 to achieve circumferential limiting. In this way, relative rotation between the first sleeve 331 and the second sleeve 332 can be prevented, improving the positional stability of the flow detection component 3, thereby improving the accuracy of flow detection.

[0071] In the above embodiments, continue to refer to Figure 7 The circumferential surface of the third annular rib 3313 has a cross-section extending along the axial direction of the first sleeve 331, and the position of the cross-section corresponds to the position of the limiting groove 3316. By setting the cross-section, a guiding function can be provided, allowing the second sleeve 332 to slide into the limiting groove 3316 along the cross-section, thereby improving the ease of installation.

[0072] In the above embodiments, such as Figure 1 and Figure 9As shown, the flow detection component 3 also includes a pitch adjustment mechanism 34, used to adjust the tilt angle of the air tube 32. The pitch adjustment mechanism 34 is connected between the flow detection component 3 and the slider 23 of the linear motion mechanism 2. By setting the pitch adjustment mechanism 34 to adjust the tilt angle of the flow detection component 3, the flow detection component 3 can be connected to the suction channel 11, preventing air leakage at the interface and ensuring the accuracy of flow detection. Specifically, the pitch adjustment mechanism 34 includes a base 341, a connecting shaft 342, and a connecting assembly. The base 341 includes a bottom plate fixed to the electronic flow meter 31 and two wing plates spaced apart from each other on the bottom plate. The two opposing wing plates have shaft holes through which the connecting shaft 342 passes. The connecting assembly includes a connecting block 343 with a channel through which the connecting shaft 342 passes. The connecting block 343 is rotatably disposed between the two wing plates around the connecting shaft 342. A magnet 344 can be provided on the side of the connecting member facing the slider 23, allowing the connecting block 343 to be attracted and fixed to the slider 23 by the magnet 344. Alternatively, the connecting block 343 may have a locking protrusion, and the slider 23 may have a corresponding locking groove, allowing the connecting member to be fixed to the slider 23 through the engagement of the locking protrusion and the locking groove. The fixing method of the pitch adjustment mechanism 34 can refer to existing technology, and this embodiment does not limit it.

[0073] In the above embodiments, such as Figure 2 As shown, the flow detection device also includes an air path control unit 43, which is connected to the flow detection component 3. The air path control unit 43 is used to control the connection or disconnection of the air path between the flow detection component 3 and the multiple suction channels 11. By setting the air path control unit 43 to realize the automatic connection or automatic disconnection between the flow detection component 3 and the suction channels 11, the degree of manual intervention is reduced and the level of automation is improved.

[0074] In the above embodiment, a counter 44 is further included, which is communicatively connected to the calibration unit 42. The counter 44 is used to count the number of calibrations performed by the calibration unit 42. By counting the number of calibrations performed by the calibration unit 42, the progress of the calibration can be understood, improving the ease of use. It should be noted that the counter 44 can be a physical structure or a module integrated into the main control unit 4; this embodiment does not limit this.

[0075] The above embodiment also includes a main control unit 4, which is communicatively connected to the path control unit 41, the gas path control unit 43, the suction unit 1, and the calibration unit 42. Through this method, the main control unit 4 centrally commands the path control, gas path control, suction, and calibration actions, ensuring consistent operation of each unit, achieving automation and seamless integration of complex processes, and greatly improving overall work efficiency and accuracy. It also avoids complex distributed control networks, simplifying system design and wiring. Centralized management through the main control unit 4 also facilitates unified status monitoring, fault diagnosis, and error handling, enhancing system stability and reliability.

[0076] Specifically, the main control unit 4 is configured to: issue movement commands to the path control unit 41, the movement commands including the movement distance of the linear motion mechanism 2 along the transverse slide rail 22 and the vertical slide rail 21, to control the flow detection component 3 to move to the next target suction channel 11; issue air path switching commands to the air path control unit 43 to control the air path connection or disconnection between the flow detection component 3 and the target suction channel 11; send a set flow value to the calibration unit 42 and send a calibration command; and receive calibration status information from the calibration unit 42.

[0077] In this embodiment, the main control unit 4 is used to execute the steps in any of the above method embodiments. The main control unit may be, but is not limited to, a central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP), field-programmable gate array (FPGA), microcontroller (MCU), or application-specific integrated circuit (ASIC) and other devices or chips with data processing capabilities. The calibration unit 42 may be a software module or a hardware module. When the calibration unit 42 is a software module, it may be integrated into the main control unit 4. One or more of the calibration unit 42, path control unit 41, and gas path control unit 43 may be integrated into the main control unit 4.

[0078] In the above embodiment, a display unit 45 is also included, connected to the main control unit 4. The display unit 45 is used to display one or more parameters, including the set flow rate, the flow rate of the airflow in each suction channel 11, the first flow rate correction amount corresponding to each suction channel 11, and the calibration status information of each suction channel 11. By setting the display unit 45, it is convenient to understand the flow rate of each suction channel 11, the progress of the calibration work, etc., thus improving the ease of use. The display unit 45 can be a display screen.

[0079] It should be noted that, in this embodiment, the suction unit may include a suction pump and multiple opening adjustment components (the number of opening adjustment components corresponds to the number of suction channels), or multiple suction pumps (the number of suction pumps corresponds to the number of suction channels) and multiple opening adjustment components (the number of opening adjustment components corresponds to the number of suction channels). This embodiment of the present invention does not limit this.

[0080] Secondly, regarding the flow calibration device corresponding to the aforementioned suction unit 1, such as... Figure 10 As shown, this utility model embodiment provides a flow rate calibration method for a suction unit 1, including the following steps:

[0081] Path adjustment steps: Move the flow detection component 3 to the suction channel 11 to be detected;

[0082] Detection steps: Detect the current flow rate of the airflow in the suction channel 11 to be tested;

[0083] Calibration steps: Compare the current flow rate with the set flow rate. Based on the comparison results, determine the first flow rate correction amount for the airflow in the suction channel 11 to be tested, and adjust the airflow in the suction channel 11 to be tested according to the first flow rate correction amount.

[0084] Through the above-described method, the flow calibration method of the suction unit 1 provided by this utility model automatically inspects each suction channel 11 by driving the flow detection component 3 through the linear motion mechanism 2 and the path control unit 41, thereby achieving efficient and automated measurement of multi-channel flow. The calibration unit 42 calculates the precise correction amount by comparing the current flow with the set flow and controls the inlet opening adjustment component 5 to form a closed-loop control. While improving calibration efficiency, it ensures the consistency and accuracy of multi-channel flow, significantly enhancing the working reliability and automation level of the suction system.

[0085] In this embodiment, during the path adjustment step, the main control unit 4 issues a movement command to the path control unit 41. This movement command includes the movement distance of the linear motion mechanism 2 along the transverse slide rail 22 and the vertical slide rail 21. The path control unit 41 controls the linear motion mechanism 2 to move the flow detection component 3 to the next target suction channel 11. Before the path adjustment step, an initialization step is also included: controlling the linear motion mechanism 2 to move the electronic flow meter 31 to a preset calibration position (measurement zero point) directly above the first suction channel 11, to ensure that the linear motion mechanism 2 can accurately move to the corresponding suction channel 11 during the path adjustment step.

[0086] In the testing step, the flow rate is measured using an electronic flow meter 31. Optionally, a flow meter calibration step is also included before calibration: the electronic flow meter 31 is calibrated using a standard soap film flow meter before starting batch calibration or periodically (depending on the frequency of use and accuracy requirements) to ensure its measurement accuracy.

[0087] The calibration process can be completed jointly by the calibration unit 42 and the opening adjustment component 5. The calibration unit 42 compares the current flow rate with the set flow rate, determines a first flow correction amount for the airflow in the suction channel 11 to be tested based on the comparison result, generates an opening adjustment command corresponding to the first flow correction amount, and sends it to the opening adjustment component 5. The opening adjustment component 5 responds to the flow adjustment command and adjusts its own opening accordingly. Specifically, the opening adjustment command includes options such as keeping the opening unchanged, increasing the opening by A, and decreasing the opening by B. The mapping relationship between the first flow correction amount and the opening can be preset in the main control unit 4. For example, the flow detection component 3 sends the current flow information to the calibration unit 42 or the main control unit 4, and the main control unit 4 sends a calibration command and a preset set flow rate to the calibration unit 42. The calibration unit 42 performs the calibration process in response to the calibration command, the set flow rate, and the current flow rate.

[0088] In the above embodiment, determining a first flow correction amount for the flow rate of the airflow in the suction channel 11 to be detected based on the comparison result between the current flow rate and the set flow rate, and adjusting the flow rate of the airflow in the suction channel 11 to be detected based on the first flow correction amount includes:

[0089] If the current flow rate is equal to the set flow rate, the first flow rate correction amount is equal to 0, the opening of the opening adjustment component 5 remains unchanged, and the calibration of the airflow in the current suction channel 11 ends.

[0090] If the current flow rate is not equal to the set flow rate, the opening of the opening adjustment component 5 is adjusted according to the opening corresponding to the first flow rate correction amount, and the calibration of the airflow in the current suction channel 11 is ended, wherein the first flow rate correction amount = set flow rate - current flow rate.

[0091] In the above manner, if the first flow correction is 0, it means that the flow rate of the airflow in the current suction channel 11 is the same as the set flow rate, that is, no opening adjustment is required. If the first correction is not 0, the opening needs to be increased or decreased to ensure the accuracy of airflow detection. After the calibration of the airflow in the current suction channel 11 is completed, the calibration unit 42 can send the calibration status information of the current suction channel 11 to the main control unit 4. The calibration status information indicates whether the corresponding suction channel 11 has been calibrated. If the current suction channel 11 has been calibrated, the main control unit 4 receives the calibration status information from the calibration unit 42.

[0092] After the current suction channel 11 is calibrated, the flow rate of the airflow in the next suction channel 11 needs to be calibrated. Therefore, the flow rate calibration method of this utility model embodiment further includes:

[0093] Air path switching step: After the calibration of the airflow rate in the current suction channel 11 is completed, the flow detection component 3 is disconnected from the current suction channel 11 and connected to the next suction channel 11 to be detected. It should be noted that in the air path switching step, the connection between the flow detection component 3 and the next suction channel 11 to be detected requires the linear motion mechanism 2 to move the flow detection component 3 to the next suction channel 11 to be detected. For example, the main control unit 4 can issue an air path switching command to the air path control unit 43. Specifically, the air path switching command is an instruction to connect or disconnect the air path between the flow detection component 3 and the current suction channel 11 or the next suction channel 11. The above air path switching step can be controlled by the air path control unit 43 and the electromagnet in the flow detection component 3.

[0094] In this embodiment, the efficient, accurate, continuous and reliable airflow calibration of the multi-suction channel 11 is achieved through automated air path switching.

[0095] In the above embodiment, the suction unit 1 includes a plurality of suction channels 11. The calibration unit 42 needs to calibrate the flow rate of the airflow in each suction channel 11. Therefore, it is necessary to count the number of times the suction channels 11 have been calibrated. The flow rate calibration method in this embodiment of the present invention further includes:

[0096] Counting Step: Record the initial count value during the first calibration step as i1 or 1. After each subsequent calibration step, increment the count i1. n Updated to i n-1 +1 or update the count to n = n + 1, i n This indicates the nth time the calibration step is performed, i n-1 This indicates that the calibration step is performed for the (n-1)th time; the counting step can be performed before or after the calibration step, and this embodiment does not limit this.

[0097] Judgment steps: Determine whether the current count in is less than the preset calibration number N, where the preset calibration number corresponds to the total number of suction channels 11;

[0098] If in is less than the preset number of calibrations, the control will execute the gas path switching step to calibrate the flow rate of the airflow in the next suction channel 11 to be tested, until the flow rate of the airflow in all suction channels 11 is calibrated and the count is reset to 0.

[0099] If in is not less than the preset number of calibrations, then the calibration of all suction channels 11 is completed.

[0100] In the above manner, using counter 44i n The increasing (i) n =in-1 +1) and by comparing with a preset value, the system can automatically decide whether to continue calibrating the next channel or end the entire calibration process. This replaces the operation that requires manual monitoring and manually starting the next calibration, achieving true automation. By comparing with the preset number of calibrations, it can be ensured that the system will definitely finish calibrating all the specified suction channels 11 (when i n <N, the process continues), and stop automatically after completion (when i n >=N, the process ends), which effectively prevents missing calibration or repeated calibration and ensures the integrity of data. Through counting, it is clear to know which calibration is currently being performed, that is, which suction channel 11 is currently being processed, which has reference value for internal status monitoring and possible fault diagnosis.

[0101] In the above embodiment, the method further comprises a displaying step: displaying one or more parameters selected from the set flow rate, the current flow rate of the air flow in each suction channel 11, the first flow correction amount, and calibration status information.

[0102] Through the above method, the digitized display of the above parameters allows technical personnel to more intuitively and clearly understand the current progress of calibration and the flow information of the air flow in each suction channel 11, avoids artificial memory or transmission errors, effectively prevents and timely detects possible problems in the calibration process, and ensures the standardization and reliability of the process.

[0103] In the above embodiment, after completing the calibration of the flow rate of the air flow in all suction channels 11 and resetting the count to zero, the method further comprises a verifying step:

[0104] controlling the suction unit 1 to operate at the set flow rate, keeping the opening adjusting member 5 corresponding to the suction channel 11 of the suction unit 1 at the corrected opening, detecting the flow rate of the air flow in each suction channel 11 to obtain the actual flow rate of the air flow in the suction channel 11; comparing the actual flow rate with the set flow rate, and determining whether to adjust the flow rate of the air flow in the suction channel 11 according to the comparison result of the actual flow rate and the set flow rate.

[0105] In this embodiment of the invention, the verification step can automatically determine whether the calibration was successful. If the deviation between the actual flow rate and the set flow rate is within the allowable error range, the calibration is considered successful. If the deviation exceeds the allowable range, the system can issue an alarm or trigger further maintenance and calibration procedures, thus playing a self-diagnostic role, improving the intelligence and reliability of the equipment, and effectively eliminating system errors caused by factors such as component aging, environmental changes, and slight differences in pipeline resistance, thereby ensuring the highest flow accuracy. Furthermore, by performing this process periodically or before each operation, performance drift caused by time (such as filter clogging, sensor sensitivity changes, motor performance degradation, etc.) can be compensated. The verification step ensures the consistency and comparability of measurement or operation results at different time points. In addition, "the opening adjustment component 5 maintains the corrected opening" indicates that the adjustment process is based on the optimized value of the previous calibration, rather than starting from scratch each time. This greatly shortens the stabilization time to reach the target flow rate, improves the working efficiency of the equipment, and is particularly important for applications requiring rapid response (such as precision manufacturing and analytical instruments).

[0106] In the above embodiments, determining whether to adjust the airflow rate within the suction channel 11 based on the comparison between the actual flow rate and the set flow rate includes:

[0107] If the absolute value of the difference between the actual flow rate and the corresponding set flow rate in each suction channel 11 is less than the ratio of the set flow rate to the flow rate threshold, the opening of the opening adjustment component 5 is maintained, and the airflow verification in the current suction channel 11 is ended; the flow rate of the airflow in the next suction channel 11 to be tested is verified until the flow rate verification of the airflow in all suction channels 11 is completed.

[0108] If the absolute value of the difference between the actual flow rate and the corresponding set flow rate in each suction channel 11 is not less than the ratio of the set flow rate, the flow rate of the airflow in the suction channel 11 is adjusted according to the second flow rate correction amount, and the verification of the flow rate of the airflow in the current suction channel 11 ends. The flow rate of the airflow in the next suction channel 11 to be tested is then verified until the verification of the flow rate of the airflow in all suction channels 11 is completed. Wherein, the second flow rate correction amount = set flow rate - actual flow rate.

[0109] In this embodiment, the ratio of the absolute value of the difference between the actual flow rate and the corresponding set flow rate to the set flow rate can be understood as the flow error. By comparing the flow error with the flow threshold, if the flow error is less than the flow threshold, it indicates that the flow error is within a reasonable range. In this case, the opening does not need to be adjusted. However, if the flow error is not less than the flow threshold, the opening can be adjusted again. That is, the opening of the opening adjustment member 5 corresponding to the suction channel 11 is adjusted based on the second flow correction amount to reduce the error between the actual flow rate and the set flow rate of the airflow in each suction channel 11, thereby ensuring the accuracy of flow detection.

[0110] In the above embodiments, the verification steps further include the aforementioned path adjustment step, detection step, counting step, gas path switching step, and display step, which are the same as the calibration steps and will not be described again here.

[0111] In summary, compared with the prior art, the smoking machine flow calibration method and device provided by the present invention have the following significant advantages:

[0112] High degree of automation and convenient operation: The electronic flow meter is automatically moved and positioned by the electric slide rail, and automatically connects, measures, calculates and provides feedback correction, which greatly reduces the manual operation steps.

[0113] Fast calibration speed: Rapid and accurate flow calibration significantly reduces the time required to calibrate all suction units individually, resulting in a marked improvement in efficiency, especially for smoking machines with multiple suction units. This invention is particularly suitable for scenarios requiring frequent flow calibration or large-scale, serialized cigarette smoking experiments.

[0114] High calibration accuracy: It eliminates human error caused by differences in the experience of different operators, and uses electronic flowmeters for measurement combined with two rounds of calibration (initial calibration + verification after correction) to ensure the consistency and accuracy of the flow rate of each suction unit.

[0115] like Figure 11 , Figure 12 As shown, the flow calibration method of the suction unit provided by this embodiment of the present invention will be described below with an example.

[0116] Thirdly, such as Figure 13 As shown, this embodiment of the invention provides an electronic device, which includes a processor 62 and a memory 61. The memory 61 stores at least one instruction, which, when executed by the processor 62, implements the flow calibration method of the suction unit as described above. The memory 61 may include, for example, system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, application programs, a bootloader, and other programs.

[0117] In the above manner, the electronic device provided by this utility model drives the flow detection component 3 to automatically inspect each suction channel 11 through the linear motion mechanism 2 and the path control unit 41, realizing efficient and automated measurement of multi-channel flow; the calibration unit 42 calculates the accurate correction amount by comparing the current flow with the set flow, and controls the inlet opening adjustment component 5 to form a closed-loop control, which improves the calibration efficiency while ensuring the consistency and accuracy of multi-channel flow, and significantly enhances the working reliability and automation level of the suction system.

[0118] Fourthly, the present invention provides a computer-readable storage medium storing at least one instruction, which, when executed, implements the flow calibration method of the suction unit as described above.

[0119] Through the above methods, the computer-readable storage medium provided by this utility model drives the flow detection component to automatically inspect each suction channel through a linear motion mechanism and a path control unit, thereby realizing efficient and automated measurement of multi-channel flow. The calibration unit calculates the precise correction amount by comparing the current flow with the set flow and controls the inlet opening adjustment component to form a closed-loop control. While improving calibration efficiency, it ensures the consistency and accuracy of multi-channel flow, significantly enhancing the working reliability and automation level of the suction system.

[0120] Those skilled in the art will understand that embodiments of this invention can be provided as methods, systems, or computer program products. Therefore, this invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this invention can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0121] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0122] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0123] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0124] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A flow rate calibration device for a suction unit, the suction unit comprising multiple suction channels, characterized in that, The flow calibration device includes: Linear motion mechanism; A flow detection component is used to detect the current flow rate of the airflow within the suction unit. The flow detection component is slidably connected to the linear motion mechanism and is configured to selectively communicate with any of the suction channels. A path control unit, connected to the linear motion mechanism, is configured to control and drive the linear motion mechanism to move the flow detection component to each of the suction channels; A calibration unit, connected to the flow detection component and the suction unit, is configured to: The flow rate of the airflow in each suction channel is received by the flow detection component, and the current flow rate is compared with the set flow rate. Based on the comparison result of the current flow rate and the set flow rate, a first flow rate correction amount of the airflow in the suction channel is determined. An opening adjustment element is disposed at the inlet of the suction unit. The opening adjustment element is used to control the airflow rate at the inlet of the suction channel. The opening adjustment element is communicatively connected to the calibration unit.

2. The flow rate calibration device for the suction unit according to claim 1, characterized in that, The linear motion mechanism includes: Two vertical slide rails are located on opposite sides of the suction unit; A horizontal slide rail is located above the suction unit, and both ends of the horizontal slide rail are slidably connected to the two vertical slide rails respectively, so as to slide along the extension direction of the vertical slide rails; A slider is slidably connected to the transverse slide rail to slide along the extension direction of the transverse slide rail, and the slider is fixed to the flow detection component.

3. The flow rate calibration device for the suction unit according to claim 1, characterized in that, The flow detection component includes: An electronic flow meter has an inlet and an outlet that are interconnected. The trachea has an inlet and an outlet that are connected to each other, and the outlet is fixed to the inlet of the electronic flow meter. A sealing connection assembly is disposed in a sealed and continuous manner between the tracheal inlet and the suction channel.

4. The flow rate calibration device for the suction unit according to claim 3, characterized in that, An electromagnet is provided at one end of the sealing connection assembly that is connected to the suction channel. The electromagnet is configured to automatically attract the suction channel when energized and to separate from the suction channel when de-energized.

5. The flow rate calibration device for the suction unit according to claim 3, characterized in that, The sealing connection assembly includes: a first sleeve and a second sleeve that are interconnected. The outer periphery of the first sleeve is formed with a first annular rib, a second annular rib and a third annular rib that are separated from each other. A first annular groove is formed between the first annular rib and the second annular rib, and a second annular groove is formed between the second annular rib and the third annular rib. The second sleeve is fitted over the outside of the first sleeve. The second sleeve has a channel formed inside for the suction unit to be inserted. The channel extends into the inside of the first sleeve and abuts against the inner wall of the first sleeve. The inner wall of the second sleeve forms a third annular groove corresponding to the position of the second annular groove. The first sealing ring is housed within the annular space formed by the first annular groove and the inner wall of the second sleeve; The second sealing ring is housed within the annular space formed by the third annular groove and the second annular groove.

6. The flow rate calibration device for the suction unit according to claim 5, characterized in that, A limiting groove is formed on the circumferential surface of the second annular rib, and the limiting groove extends along the axial direction of the first sleeve; the inner wall of the second sleeve is formed with a protrusion that matches the limiting groove, and the first sleeve and the second sleeve slide into the limiting groove through the protrusion and cooperate with the limiting groove to achieve circumferential limiting.

7. The flow rate calibration device for the suction unit according to claim 6, characterized in that, The circumferential surface of the third annular rib has a cross-section extending along the axial direction of the first sleeve, and the position of the cross-section corresponds to the position of the limiting groove.

8. The flow rate calibration device for the suction unit according to claim 3, characterized in that, Also includes: A pitch adjustment mechanism is used to adjust the tilt angle of the trachea. The pitch adjustment mechanism is connected between the flow detection component and the slider of the linear motion mechanism.

9. The flow rate calibration device for the suction unit according to any one of claims 1 to 8, characterized in that, Also includes: An air path control unit is connected to the flow detection component, and the air path control unit is used to control the connection or disconnection of the air path between the flow detection component and the multiple suction channels.

10. The flow rate calibration device for the suction unit according to claim 9, characterized in that, Also includes: A counter, which is communicatively connected to the calibration unit, is used to count the number of calibrations performed by the calibration unit.

11. The flow rate calibration device for the suction unit according to claim 10, characterized in that, Also includes: The main control unit is communicatively connected to the path control unit, the gas path control unit, the suction unit, and the calibration unit.

12. The flow rate calibration device for the suction unit according to claim 11, characterized in that, It also includes a display unit connected to the main control unit. The display unit is used to display one or more parameters among the set flow rate, the flow rate of the airflow in each of the suction channels, the first flow rate correction amount corresponding to each of the suction channels, and the calibration status information of each of the suction channels.

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