Flow dividing column and gas flow control device

Abstract

The utility model provides a flow dividing column and a gas flow control device, the flow dividing column comprises a flow dividing column main body, the flow dividing column main body comprises a plurality of flow dividing sheets stacked along the normal direction, each flow dividing sheet is provided with a plurality of vent grooves arranged side by side, and the vent grooves penetrate through the flow dividing sheets; an accommodating cavity for accommodating the shunting column main body is formed in the frame body; wherein the length of the shunting column is smaller than the distance between a first thin tube through hole and a second thin tube through hole in the base, and the first thin tube through hole and the second thin tube through hole are used for being connected with a capillary tube of a thermal sensor, so that the thermal sensor detects the flow. Due to the short flow dividing column, extra disturbance possibly generated when the airflow enters and leaves the flow dividing column is reduced, and the stability of the airflow and the accuracy of measurement are further improved. In addition, due to the small size, the flow dividing column is easier to disassemble and replace, the maintenance process is simplified, and the maintenance cost is reduced.

Description

Technical Field

[0001] This application belongs to the field of gas control technology, and in particular relates to a flow divider and a gas flow control device. Background Technology

[0002] A flow meter is a measuring instrument that measures the volumetric flow rate or mass flow rate of a fluid. It mainly includes a flow divider, a flow sensor, and inlet and outlet ports. The working principle is as follows: the fluid enters the flow divider from the inlet, and the flow divider splits the fluid. One part enters the flow sensor, and the other part flows directly downward (if the flow meter has a regulating valve, the split fluids will rejoin at the rear end of the flow divider and then flow through the regulating valve), and then flow out through the outlet.

[0003] In the existing technology, flow meters are usually made by winding. However, this production method has several significant problems, which affect the quality of the product and the production efficiency: (1) Complex production process: The winding process involves multiple cumbersome steps, which increases the complexity and time cost of production. Each step requires precise operation and adjustment, and the slightest carelessness may lead to a decline in the quality of the finished product. (2) Difficulty in fixing: During the winding process, it is a challenge to ensure that the layers of material are tightly attached and fixed in position. Traditional methods are difficult to achieve efficient fixing, which can easily lead to material displacement or loosening, thereby affecting the performance and consistency of the final product. (3) Peripheral gap problem: The winding process inevitably forms gaps on the periphery, which affects the consistency and accuracy of the product. The existence of gaps may introduce additional airflow paths or interference, thereby reducing the accuracy of measurement. (4) Difficulty in guaranteeing consistency: Due to various uncertainties in the winding process, there may be significant differences between different batches of products, making it difficult to ensure that each product meets the same standards and performance requirements. Summary of the Invention

[0004] In view of the above-mentioned problems in the prior art, the purpose of this paper is to provide a flow divider and a gas flow control device to solve the problem of low flow control accuracy in the prior art.

[0005] To solve the above-mentioned technical problems, the specific technical solution presented in this paper is as follows:

[0006] On the one hand, this paper provides a shunt column, including:

[0007] The main body of the diversion column includes: a plurality of diversion plates stacked along the normal direction, each of the diversion plates forming a plurality of side-by-side ventilation slots, the ventilation slots penetrating the diversion plates so that the ventilation slots form airflow channels;

[0008] The frame has a receiving cavity for accommodating the main body of the diversion column, so that each of the airflow channels forms laminar flow within the frame;

[0009] The length of the diversion column is less than the distance between the first and second capillary through holes in the base. The first and second capillary through holes are used to connect the capillary of the thermal sensor so that the thermal sensor can detect the flow rate.

[0010] Optionally, the frame includes a first frame and a second frame, which together form a receiving cavity to accommodate the main body of the diversion column.

[0011] Optional features also include: positioning elements;

[0012] The outer periphery of the frame has a mounting portion for mounting the positioning member. The mounting portion cooperates with the positioning member to detachably connect the first frame and the second frame.

[0013] Optionally, after the positioning member is installed to the mounting part, the outer periphery of the positioning member is located within the outer periphery of the frame.

[0014] Optionally, the mounting portion includes a first mounting groove located in the first frame and a second mounting groove located in the second frame;

[0015] The first mounting groove has a first protrusion formed on the side near the second frame, and the second mounting groove has a second protrusion formed on the side near the first frame;

[0016] The positioning element has grooves that match the first protrusion and the second protrusion.

[0017] Optionally, the positioning element is a bolt;

[0018] The mounting part includes a first mounting slot located in the first frame and a second mounting slot located in the second frame;

[0019] The first mounting groove has a first protrusion formed on the side near the second frame, and the second mounting groove has a second protrusion formed on the side near the first frame;

[0020] The widths of the first protrusion and the second protrusion are greater than the allowable installation spacing of the bolt.

[0021] Optionally, the length of the shunt plate is less than or equal to the length of the frame.

[0022] Optionally, it also includes: a first limiting member; the first limiting member is disposed on the air intake side of the main body of the diverter column, and is used to restrict the axial movement of the frame;

[0023] The limiting member has a first air passage groove, which is used to divert the airflow to the inlet of the first thin tube through hole for detecting the gas flow rate.

[0024] Optionally, it also includes: a second limiting member; the second limiting member is disposed on the air outlet side of the main body of the diversion column, and is used to limit the axial movement of the frame;

[0025] The limiting member has a second air passage groove, which is used to merge the gas flowing out of the second thin tube through hole with the gas flowing out of the main body of the flow divider.

[0026] On the other hand, this application provides a gas flow control device, comprising:

[0027] As described above, the flow divider column;

[0028] A base having a blind hole for accommodating the diversion column.

[0029] By employing the above technical solution, the flow divider column and gas flow control device provided in this paper, through the design of multi-layer flow dividers, enable the airflow to be evenly distributed as it passes through each layer, reducing turbulence and ensuring the stability and consistency of the airflow. A stable laminar flow environment helps improve the measurement accuracy of the thermal sensor because the airflow in laminar flow is more uniform, reducing the impact of airflow fluctuations on the measurement results. Simultaneously, the length of the flow divider column is designed to be less than the distance between the first and second thin-tube through-holes in the base. These two thin-tube through-holes are used to connect the capillary of the thermal sensor to achieve flow detection, allowing the flow divider column to better adapt to the installation space and avoiding the installation inconvenience or space waste that might result from an excessively long flow divider column. Furthermore, the shorter flow divider column reduces the additional disturbances that may occur when the airflow enters and leaves the flow divider column, further improving the stability of the airflow and the accuracy of the measurement. In addition, the smaller size makes the flow divider column easier to disassemble and replace, simplifying the maintenance process and reducing maintenance costs.

[0030] To make the above and other objects, features and advantages of this document more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments or prior art described herein, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this article. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This paper shows a schematic diagram of the assembly structure of a flow divider column according to an embodiment of the invention;

[0033] Figure 2 This paper shows a schematic diagram of the main structure of a diversion column according to an embodiment of the invention.

[0034] Figure 3 This document shows a three-dimensional structural diagram of a first frame or a second frame according to an embodiment of the invention;

[0035] Figure 4 A side view of a positioning component according to an embodiment of this paper is shown.

[0036] Figure 5 A three-dimensional structural schematic diagram of a flow divider according to an embodiment of this article is shown;

[0037] Figure 6 A three-dimensional structural schematic diagram of a first limiting member or a second limiting member according to an embodiment of this article is shown;

[0038] 1-Diverter column body, 11-Diverter plate, 12-Ventilation groove, 13-Gap wall;

[0039] 21-First frame, 22-Second frame, 23-Receiving cavity, 24-First mounting groove, 25-Second mounting groove, 26-First protrusion, 27-Second protrusion;

[0040] 3-Positioning element, 31-Groove;

[0041] 4-First limiting component;

[0042] 5-Second limiting component;

[0043] 6-Base, 61-First capillary through hole, 62-Second capillary through hole; Detailed Implementation

[0044] The technical solutions in the embodiments described below will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments described herein, and not all of the embodiments. Based on the embodiments described herein, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this document.

[0045] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings herein are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0046] To address the aforementioned issues, this embodiment provides a diversion column that is assembled using a fixed frame, reducing installation difficulty. Figure 1-6 The diagram illustrates a flow divider column according to an embodiment of this paper, but based on conventional or non-inventive methods, it may include more or fewer operating components. This application provides a flow divider column, comprising: a flow divider column body 1, which includes: a plurality of flow divider plates 11 stacked along the normal direction, each of the flow divider plates 11 forming a plurality of side-by-side ventilation slots 12, the ventilation slots 12 penetrating the flow divider plates 11 to form an airflow channel;

[0047] The frame has a receiving cavity 23 for accommodating the main body of the diversion column 1, so that each of the airflow channels forms laminar flow within the frame;

[0048] The length of the diversion column is less than the distance between the first capillary through-hole 61 and the second capillary through-hole 62 in the base 6. The first capillary through-hole 61 and the second capillary through-hole 62 are used to connect the capillary of the thermal sensor so that the thermal sensor can detect the flow rate.

[0049] Specifically, such as Figure 5 As shown, the flow divider 11 can be a rectangular structure, meaning it has both a length direction and a width direction. Each flow divider 11 can have multiple ventilation slots 12 for airflow passage. These ventilation slots 12 are arranged side-by-side along the width direction of the flow divider 11, with adjacent slots sharing a common partition wall. The thickness of the partition wall can be set according to the strength requirements of the flow divider 11. The strength requirement of the flow divider 11 can be the strength applied to the stacked flow dividers 11 during installation. The bottom surface of the flow divider 11 is a planar structure, and this bottom surface is the surface opposite to the ventilation slots 12.

[0050] The two sides of the flow divider 11 in the width direction can be directly partition walls, or they can be ventilation slots 12 with a preset interval between them and the nearest partition wall. The ventilation slots 12 with the preset interval form an airflow channel through the partition wall and the inner diameter of the frame.

[0051] The main body 1 of the diversion column can be formed by multiple diversion plates 11 stacked along the normal direction. The orientation of each diversion plate 11 can be the same. For example, the orientation of the ventilation grooves 12 in all diversion plates 11 is the same, so that the uppermost ventilation groove 12 forms a laminar flow channel with the inner wall of the frame, and the ventilation grooves 12 in other diversion plates 11 form a laminar flow channel with the bottom surface of the adjacent diversion plate 11.

[0052] The main body 1 of the diversion column can be formed by multiple diversion plates 11 stacked along the normal direction. The diversion plates 11 have different orientations. For example, the ventilation grooves 12 in some diversion plates 11 face the first direction, and the ventilation grooves 12 in the remaining diversion plates 11 face the second direction opposite to the first direction. The first direction and the second direction are two extension directions of a straight line, so that the ventilation grooves 12 in the outermost diversion plates 11 facing the first and second directions form a laminar flow channel with the inner wall of the frame. At the same time, the bottom surfaces of the innermost diversion plates 11 facing the first and second directions are opposite to each other.

[0053] The frame may include a first frame 21 and a second frame 22, which together form a receiving cavity 23 for accommodating the main body 1 of the diversion column.

[0054] The dimensions of the venting slots 12 on the flow divider 11 are designed to ensure that the airflow channel formed after installation is laminar. The number of venting slots 12 on the flow divider 11 can be determined according to the application scenario of the flow divider column. For example, in the case of a large flow range, the number of venting slots 12 is relatively large, and correspondingly, the number of venting slots 12 is relatively small in the case of a large flow range.

[0055] The length direction of the flow divider 11 is the axial direction of the ventilation slot 12, and the length direction of the flow divider 11 is the arrangement direction of the multiple ventilation slots 12.

[0056] Understandably, the widths of the individual flow dividers 11 in the flow divider column can be different. The width of each flow divider 11 is determined by the shape of the blind orifice. The shape of the blind orifice can be cylindrical, square, triangular, etc.

[0057] Specifically, the normal direction can be perpendicular to the axis of the blind hole. In practical applications, it can be either horizontal or vertical.

[0058] like Figure 3 As shown, the first frame 21 and the second frame 22 can have the same structure. The specific shape of the structure can be set according to the shape of the blind hole in the base 6. For example, if the blind hole is cylindrical, then both the first frame 21 and the second frame 22 are semi-cylindrical structures. It can be understood that the blind hole can also be other shapes, such as cuboids.

[0059] The first frame 21 and the second frame 22 can also have different structures. For example, the first frame 21 has a cavity 23 for installing the diversion column body 1, and the surface of the second frame 22 that contacts the first frame 21 is a planar structure. That is, after the diversion column body 1 is installed into the cavity 23 of the first frame 21, the second frame 22 can directly cover the cavity 23 side of the first frame 21.

[0060] It is understandable that the shape of the first frame 21 and the second frame 22 after being spliced ​​together is based on the shape of the blind hole in the base 6.

[0061] One side of the base 6 has a blind hole to accommodate the diversion column, and the inner wall of the blind hole is the inner wall of the base 6. The frame is installed tightly inside the base 6, that is, when the diversion column is installed inside the base 6, the distance between the frame and the inner wall of the base 6 is as small as possible to ensure consistency.

[0062] To ensure optimal matching between the flow divider 11 and the frame, the width of each flow divider 11 can be adjusted according to the specific geometry of the receiving cavity 23 within the frame. For example, when the receiving cavity 23 is cylindrical, the design of the flow divider 11 can follow these principles: The central flow divider 11 is the largest: The flow divider 11 located at the center is the largest in size to ensure it fully covers the central area of ​​the blind orifice, providing optimal airflow distribution. Sizes gradually decrease: From the central flow divider 11 upwards and to the upper and lower sides, the size of the flow divider 11 gradually decreases. This gradual design helps achieve a more uniform airflow distribution, reducing turbulence and pressure loss. In this way, the flow divider 11 can better adapt to the cylindrical shape of the receiving cavity 23, ensuring that the airflow is evenly distributed before entering each flow channel, thereby improving the accuracy and stability of flow control.

[0063] When the cavity 23 is changed from cylindrical to square, the method of determining the size of the flow divider 11 and the design can be simplified, bringing many benefits.

[0064] 1. Simplified design

[0065] Reduced types of splitter plates 11: The symmetry and regular shape of the square blind aperture reduce the number of splitter plate 11 types required. Compared to cylindrical blind apertures, the square structure allows for the use of fewer types of splitter plates 11 with consistent dimensions, thus simplifying the design process.

[0066] Standardized production: Fewer flow segment 11 types mean that standardized production can be achieved more easily, reducing the number of molds and tools and lowering manufacturing costs.

[0067] 2. Improve consistency

[0068] Uniform distribution: The regular boundaries of the square blind holes allow for a more uniform distribution of airflow before it enters each flow channel. Because the size and shape of the flow divider 11 are relatively simple and consistent, it can be ensured that each flow divider 11 provides the same performance, improving the uniformity and consistency of the overall system.

[0069] Reduced errors: The standardized design of the shunt 11 reduces errors in the manufacturing and assembly process, ensuring that each shunt 11 can be installed accurately, further improving product quality.

[0070] 3. Simplify assembly

[0071] Easy to position: The regular geometry of the square blind hole makes the flow divider 11 easier to position and fix. Compared with cylindrical blind holes, the square structure provides more reference points, ensuring that the flow divider 11 will not shift or rotate during assembly.

[0072] Rapid assembly: Fewer shunt type 11 components mean simpler assembly steps, reduced assembly time and complexity, and improved production efficiency.

[0073] 4. Enhance stability

[0074] Better support: The four right-angled edges of the square blind hole provide better support for the flow divider 11, reducing the risk of displacement due to vibration or pressure changes. This design enhances the overall stability and reliability of the system.

[0075] Reduced gaps: The regular square structure makes the fit between the flow dividers 11 and between the flow dividers 11 and the blind holes tighter, reducing unnecessary gaps and avoiding additional airflow paths or interference.

[0076] 5. Optimize material utilization

[0077] Reduced waste: Fewer flow divider types mean better material utilization, reducing scrap and cutting losses. Standardized design also helps improve material utilization and reduce production costs.

[0078] Facilitates inventory management: The standardized splitter design simplifies inventory management, reduces the storage requirements for parts of different specifications, and lowers warehousing costs.

[0079] Other shapes of blind holes are similar to those of cylinders and will not be described further.

[0080] The length of the flow divider column is less than the distance between the first thin tube through hole 61 and the second thin tube through hole 62 in the base 6. The first thin tube through hole 61 and the second thin tube through hole 62 are used to connect the capillary of the thermal sensor so that the thermal sensor can detect the flow rate. After the flow divider column is installed, the gas in the inlet of the flow divider column can be diverted to the first thin tube through hole 61, and the gas flowing through the first thin tube through hole 61 converges at the outlet side of the flow divider column to ensure the accuracy of the flow rate detection.

[0081] When installing each diverter 11 into the receiving cavity 23, preload elements can be used. These preload elements can be springs, which provide preload force through compression or tension. Different types of materials and structures (such as coil springs, disc springs, etc.) can be selected according to different needs. Washers, such as wave washers and tapered washers, can provide additional preload force in bolted connections to ensure a tight connection. Threaded adjustment elements, such as lock nuts and preload screws, can apply precise preload force by adjusting the threads. Hydraulic or pneumatic preload devices utilize hydraulic or pneumatic pressure to provide stable preload force.

[0082] To better understand this application, a corrugated spring is used as the preload element in the description. The corrugated spring in this application includes: a plurality of spaced deformation portions and a plurality of flat portions. The deformation portions are in contact with the bottom surface of the flow divider 11, and the arc-shaped portions are used to provide a preload force in the normal direction by deforming the entire flow divider 11.

[0083] Specifically, the deformable part has a wavy arc structure, and the flat part has a planar structure. The deformable part and the flat part are arranged at intervals between the wavy spring pieces. The flat part is used to abut against the bottom surface of the flow divider 11, the inner wall of the blind hole, or the venting groove 12 on the flow divider 11.

[0084] The deformable part can abut against the bottom surface of the flow divider 11, the inner wall of the blind hole, or the venting groove 12. It should be noted that when the deformable part abuts against the venting groove 12 on the flow divider 11, the width of the deformable part is smaller than the width of the venting groove 12, thereby preventing the deformable part from connecting different venting grooves 12.

[0085] Existing wound-shaped flow dividers often have uncontrollable gas gaps. For example, when the sheet-like flow divider 11 is wound, its outermost layer is not a closed ring. Due to its arc shape, a gap will form between its outer surface and the inner wall of the blind hole. This gap is uncontrollable, and during installation, the installation method and process will lead to poor consistency of products in the same batch. In this application, to avoid the above problems, the width of the pre-tightening member is designed to be greater than or equal to the width of the flow divider 11. Since the width of the pre-tightening member is greater than or equal to the width of the flow divider 11, in practical applications, the pre-tightening member can prevent gas passing through the flat plate section from entering the next flat plate section. That is, all gaps in the flow divider column of this application are controllable, thereby improving product consistency.

[0086] Specifically, the length of the pre-tightening component is less than the length of the diverter 11, so that during installation, its deformed length does not exceed the length of the diverter 11 and thus block the airflow channel.

[0087] Based on the above embodiments, in one embodiment of this specification, the diversion column may further include: a first frame 21 and a second frame 22 fixedly connected, the first frame 21 and the second frame 22 being disposed opposite to each other to form a receiving cavity 23 for accommodating the diversion column body 1.

[0088] Specifically, the first frame 21 and the second frame 22 can be connected by positioning components 3 such as bolts or welding. The first frame 21 and the second frame 22 can be identical, having a U-shaped frame structure with a first sidewall, a bottom surface, and a second sidewall connected in sequence. Holes for placing fixing bolts can be provided on the first sidewall and the second sidewall to fix all the diverter plates 11 inside, preventing the diverter plates 11 from moving inside the receiving cavity 23 during installation.

[0089] When the positioning element 3 is a bolt, the mounting part includes a first mounting groove 24 located in the first frame 21 and a second mounting groove 25 located in the second frame 22;

[0090] The first mounting groove 24 has a first protrusion 26 on the side near the second frame 22, and the second mounting groove 25 has a second protrusion 27 on the side near the first frame 21.

[0091] The widths of the first protrusion 26 and the second protrusion 27 are greater than the allowable installation spacing of the bolt.

[0092] The length of the flow divider 11 is less than or equal to the length of the frame to ensure that gas can enter the first thin tube through hole 61 and the second thin tube through hole 62, thereby ensuring the accuracy of gas flow detection.

[0093] To ensure that the axis of the diversion column does not move after installation, a first limiting member 4 and a second limiting member 5 can be installed on both sides of it. Both the first limiting member 4 and the second limiting member 5 have gas passage grooves for gas to pass through.

[0094] Specifically, the first limiting member 4 and the second limiting member 5 have air passage grooves (first air passage groove and second air passage groove) on the side near the diverter column, so that the first limiting member 4 and the second limiting member 5 are not in continuous contact with the frame, and the position of the air passage groove is connected to the first thin tube through hole 61 or the second thin tube through hole 62. The side of the first limiting member 4 and the second limiting member 5 away from the diverter column can be a hollow structure adapted to the blind hole position of the base 6, such as a hollow annular structure. The first limiting member 4 and the second limiting member 5 can only contact the frame, and restrict the axial movement of the diverter column by limiting the frame, thereby avoiding the first limiting member 4 and the second limiting member 5 from blocking the laminar flow structure on the diverter plate 11 and wasting the laminar flow channel.

[0095] Optionally, both the first frame 21 and the second frame 22 are sheet-like structures with grooves 31, and bolt holes are provided on them. Correspondingly, the diverter plate 11 is also provided with fixing holes for bolt insertion. The position of the fixing holes corresponds to the position of the first frame 21 and the second frame 22. It can be understood that when fixing holes are provided on the diverter plate 11, isolation walls of the same height as the aforementioned gap wall 13 can be formed on both sides of the fixing holes. These isolation walls are used to block airflow from entering the space where the fixing holes are located.

[0096] Optionally, the first frame 21 and the second frame 22 may also be formed with mounting portions that match the positioning member 3. The mounting portions include a first mounting groove 24 located in the first frame 21 and a second mounting groove 25 located in the second frame 22.

[0097] The first mounting groove 24 has a first protrusion 26 on the side near the second frame 22, and the second mounting groove 25 has a second protrusion 27 on the side near the first frame 21.

[0098] The positioning element 3 has a groove 31 that matches the first protrusion 26 and the second protrusion 27.

[0099] The first mounting slot 24 and the second mounting slot 25 can have the same structure.

[0100] Specifically, such as Figure 4 As shown, a groove 31 is formed on the side of the positioning member 3 near the frame. This groove 31 matches the adjacent first protrusion 26 and second protrusion 27. During installation, the groove 31 on the positioning member 3 can match the adjacent first protrusion 26 and second protrusion 27 to snap the positioning member 3 into the first protrusion 26 and second protrusion 27, thereby detachably connecting the first frame 21 and the second frame 22. It can be understood that the groove 31 on the positioning member 3 fits tightly with the first protrusion 26 and second protrusion 27 and is detachably connected by a snap-fit ​​method. The groove 31 on the positioning member 3 can form a preset angle with the recessed structure, i.e., between the sidewall and bottom surface of the groove 31, so that the distance between the two sidewalls decreases sequentially from the bottom surface to the edge.

[0101] The flow divider column provided in this paper, through its multi-layered flow divider plate 11 design, ensures uniform airflow distribution as it passes through each layer, reducing turbulence and guaranteeing airflow stability and consistency. A stable laminar flow environment contributes to improved measurement accuracy of the thermal sensor because the airflow is more uniform in laminar flow, reducing the impact of airflow fluctuations on the measurement results. Simultaneously, the length of the flow divider column is designed to be less than the distance between the first and second thin-tube through-holes 61 and 62 in the base 6. These two thin-tube through-holes are used to connect the capillary of the thermal sensor for flow detection, allowing the flow divider column to better adapt to the installation space and avoiding the installation inconvenience or space waste that might result from an excessively long flow divider column. Furthermore, the shorter flow divider column reduces additional disturbances that might occur when the airflow enters and exits the column, further improving airflow stability and measurement accuracy. Additionally, the smaller size makes the flow divider column easier to disassemble and replace, simplifying the maintenance process and reducing maintenance costs.

[0102] On the other hand, this application also provides a gas flow control device, such as Figure 1 As shown, it includes:

[0103] As described in any of the above items;

[0104] Base 6, wherein the base 6 is formed with a blind hole for accommodating the diversion column;

[0105] The blind hole has a stepped structure inside, and the stepped structure abuts against the second limiting member 5.

[0106] The gas flow control device also has a first thin tube through hole 61 and a second thin tube through hole 62 inside the blind hole. The two through holes are connected to the capillary tube of the thermal sensor so that the thermal sensor can detect the flow rate.

[0107] It should be noted that in the gas flow controller, when the diversion column abuts against the stepped structure on the base 6, it is necessary to ensure that the diversion channel for the thermal sensor connection is not blocked.

[0108] The gas flow control device provided in the embodiments of this specification includes a flow divider column, and therefore possesses all the technical effects of a flow divider column, which will not be repeated here.

[0109] It should also be understood that, in the embodiments herein, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following associated objects have an "or" relationship.

[0110] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this document.

[0111] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0112] In the embodiments provided herein, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, apparatuses, or units, or they may be electrical, mechanical, or other forms of connection.

[0113] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments described herein, depending on actual needs.

[0114] This document uses specific embodiments to illustrate the principles and implementation methods of this document. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this document. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this document. Therefore, the content of this specification should not be construed as a limitation of this document.

Claims

1. A flow splitter column, characterized by, include: The main body of the diversion column includes: a plurality of diversion plates stacked along the normal direction, each of the diversion plates forming a plurality of side-by-side ventilation slots, the ventilation slots penetrating the diversion plates so that the ventilation slots form airflow channels; The frame has a receiving cavity for accommodating the main body of the diversion column, so that each of the airflow channels forms laminar flow within the frame; The length of the diversion column is less than the distance between the first and second capillary through holes in the base. The first and second capillary through holes are used to connect the capillary of the thermal sensor so that the thermal sensor can detect the flow rate.

2. The split column of claim 1, wherein, The frame includes a first frame and a second frame, which together form a receiving cavity to accommodate the main body of the diversion column.

3. The split column of claim 2, wherein, Also includes: Positioning components; The outer periphery of the frame has a mounting portion for mounting the positioning member. The mounting portion cooperates with the positioning member to detachably connect the first frame and the second frame.

4. The split column of claim 3, wherein, After the positioning member is installed into the mounting part, the outer periphery of the positioning member is located within the outer periphery of the frame.

5. The split column according to claim 3 or 4, characterized in that The mounting part includes a first mounting slot located in the first frame and a second mounting slot located in the second frame; The first mounting groove has a first protrusion formed on the side near the second frame, and the second mounting groove has a second protrusion formed on the side near the first frame; The positioning element has grooves that match the first protrusion and the second protrusion.

6. The split column of claim 3 or 4, wherein, The positioning element is a bolt; The mounting part includes a first mounting slot located in the first frame and a second mounting slot located in the second frame; The first mounting groove has a first protrusion formed on the side near the second frame, and the second mounting groove has a second protrusion formed on the side near the first frame; The widths of the first protrusion and the second protrusion are greater than the allowable installation spacing of the bolt.

7. The split column according to any one of claims 1 to 4, wherein The length of the flow divider is less than or equal to the length of the frame.

8. The split column of claim 1, wherein, Also includes: First limiting member; the first limiting member is disposed on the air intake side of the main body of the diverter column, and is used to restrict the axial movement of the frame; The limiting member has a first air passage groove, which is used to divert the airflow to the inlet of the first thin tube through hole for detecting the gas flow rate.

9. The split column of claim 1 or 8, wherein, Also includes: The second limiting member is disposed on the air outlet side of the main body of the diversion column to restrict the axial movement of the frame. The limiting member has a second air passage groove, which is used to merge the gas flowing out of the second thin tube through hole with the gas flowing out of the main body of the flow divider.

10. A gas flow control device, characterized in that, include: The shunt column according to any one of claims 1 to 9; A base having a blind hole for accommodating the diversion column.

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