Sample injector
By designing a sampler with optimized gas flow characteristics, the problems of complex operation, easy gas leakage and low collection efficiency in traditional methods are solved, and efficient and accurate human exhaled gas collection is achieved.
Patent Information
- Application Number
- CN202421894153.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The traditional human body's exhaled gas collection method has problems such as complex operation, easy gas leakage, and low collection efficiency, which affects the accuracy and timeliness of the detection results.
A sampler is designed, including an inlet, an outlet, an inlet duct and an air chamber, ensuring smoothness and stability of gas flow by optimizing the design of gas flow (such as the design of two notches and round tables opened at the inlet port) and the use of control valves and sensors.
It realizes a sampler with simple structure, convenient operation and good sealing, improves injection accuracy and efficiency, and ensures the accuracy and timeliness of the detection results.
Smart Images
Figure CN222983045U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of human exhaled gas detection, and specifically relates to a sampler. Background Technique
[0002] In medical research and clinical diagnosis, the component analysis of human exhaled gas is of great significance for monitoring the health status of the respiratory system, evaluating the metabolic state, and diagnosing certain diseases. Traditional methods for collecting human exhaled gas often have problems such as complex operation, easy gas leakage, and low collection efficiency, which affect the accuracy and timeliness of the detection results. Therefore, it is particularly important to develop a sampler with a simple structure, convenient operation, and good sealing performance. Content of the Utility Model
[0003] (I) Technical Problems to be Solved
[0004] In view of the deficiencies of the prior art, the utility model provides a sampler, which has the advantages of simple structure, convenient operation, and good sealing performance, and solves the problems of complex operation, easy gas leakage, and low collection efficiency existing in traditional methods for collecting human exhaled gas.
[0005] (II) Technical Solutions
[0006] To achieve the purpose of the sampler with a simple structure, convenient operation, and good sealing performance, the utility model provides the following technical solutions: A sampler includes a sampler body. An air inlet is provided on one side wall of the sampler body. An air outlet is provided on a side wall adjacent to the side wall with the air inlet. Two notches are opened at the port of the air inlet. A frustum is provided at the other end of the air inlet. The other end of the frustum is connected to an air inlet pipe. The other end of the air inlet pipe is connected to an air cavity. An air outlet pipe is connected to one side of the air cavity. The air outlet pipe is fixedly connected to the air outlet.
[0007] Preferably, seven strip-shaped heat dissipation openings are provided on the side wall of the sampler body beside the air outlet.
[0008] Preferably, a first control valve is provided on the air inlet pipe.
[0009] Preferably, a first sensor is connected to one side of the first control valve, and a first data processor is connected to one side of the first sensor.
[0010] Preferably, a second control valve is provided on the air outlet pipe.
[0011] Preferably, a second sensor is connected to one side of the second control valve, and a second data processor is connected to one side of the second sensor.
[0012] Preferably, fillets are provided on all four sides of the sampler body.
[0013] (III) Beneficial effects
[0014] Compared with the prior art, the present utility model provides a sampler, which has the following beneficial effects:
[0015] For this sampler, two notches are opened at the inlet port to optimize gas flow, reduce eddy currents and turbulence, thereby improving sampling accuracy; the frustum design is used to guide the gas to smoothly enter the intake pipe, reducing gas impact and energy loss. The intake pipe is responsible for transporting the gas from the inlet to the gas chamber, providing the necessary power or carrier gas for the subsequent sample injection process; the gas chamber, as the connection part between the intake pipe and the outlet pipe, plays a role in buffering and regulating the gas flow. It ensures that the gas reaches a stable state before entering the outlet pipe, which is conducive to achieving accurate sample injection. Description of the drawings
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 It is a schematic diagram of the internal structure of the present utility model;
[0018] Figure 3 It is a schematic diagram of the inlet structure of the present utility model.
[0019] In the figure: 1. Sampler body; 11. Rounded corner; 12. Heat dissipation port; 2. Inlet; 21. Notch; 22. Frustum; 23. First control valve; 24. First sensor; 25. First data processor; 3. Outlet; 31. Outlet pipe; 32. Second control valve; 33. Second sensor; 34. Second data processor; 4. Gas chamber. Detailed implementation manners
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] Such as Figures 1-3As shown in the figure, a sampler includes a sampler body 1. An air inlet 2 is provided on one side wall of the sampler body 1, and an air outlet 3 is provided on one side wall adjacent to the side wall with the air inlet 2. Two notches 21 are opened at the port of the air inlet 2. A frustum 22 is provided at the other end of the air inlet 2. The other end of the frustum 22 is connected to an air inlet pipe, and the other end of the air inlet pipe is connected to an air chamber 4. One side of the air chamber 4 is connected to an air outlet pipe 31, and the air outlet pipe 31 is fixedly connected to the air outlet 3. The sampler is an important part of the chromatographic analysis system, and its main function is to quantitatively and accurately send the sample to be analyzed into the chromatographic column for analysis. Through the carefully designed structures such as the air inlet 2, the air outlet 3, the air chamber 4 and the connecting pipes, etc., the sampler realizes the efficient and stable sampling of the sample. The air inlet 2 is arranged on the side wall of the sampler body 1 and is the entrance for external gas or sample gas to enter the sampler. The two notches 21 opened at the port of the air inlet 2 are used to optimize the gas flow, reduce eddy current and turbulence, so as to improve the sampling accuracy. The design of the frustum 22 is used to guide the gas to smoothly enter the air inlet pipe, reduce gas impact and energy loss. The air inlet pipe is responsible for transporting the gas from the air inlet 2 to the air chamber 4, providing the necessary power or carrier gas for the subsequent sample sampling process. The air chamber 4, as the connecting part between the air inlet pipe and the air outlet pipe 31, plays a role in buffering and regulating the gas flow. It ensures that the gas reaches a stable state before entering the air outlet pipe 31, which is conducive to realizing accurate sample sampling. The air outlet pipe 31 connects the air chamber 4 and the air outlet 3 and is responsible for transporting the processed gas to the chromatographic column or other analysis equipment. The design of the air outlet pipe 31 ensures the smoothness and stability of the gas flow. The air outlet 3 is arranged on the side wall of the sampler body 1 adjacent to the air inlet 2 and is the outlet for the gas to leave the sampler and enter the subsequent analysis equipment. The position and design of the air outlet 3 should match the interface of the chromatographic column or other analysis equipment to ensure that the gas can smoothly and accurately enter the analysis system.
[0022] As Figure 1 shown, seven strip-shaped heat dissipation openings 12 are opened beside the air outlet 3 on the side wall of the sampler body 1. The main function of the seven strip-shaped heat dissipation openings 12 opened beside the air outlet 3 on the side wall of the sampler body 1 is to help the sampler dissipate heat, reduce the internal temperature, extend the service life, maintain the accuracy, and improve the performance and safety of the entire analysis system. The design of these heat dissipation openings 12 is an indispensable part of the sampler design and is of great significance for ensuring the long-term stable operation of the instrument.
[0023] As Figure 2As shown, a first control valve 23 is provided on the intake pipe. One side of the first control valve 23 is connected to a first sensor 24, and one side of the first sensor 24 is connected to a first data processor 25. The main function of the first control valve 23 is to regulate and control the gas flow rate entering the intake pipe. By adjusting the valve opening, the amount of gas entering the sampler or engine can be precisely controlled to meet different working requirements. In some cases, the first control valve 23 can also be used to adjust the gas pressure in the intake pipe to ensure a stable pressure state during gas transportation and avoid affecting subsequent analysis or combustion processes due to pressure fluctuations. When abnormal conditions occur in the intake pipe (such as gas leakage, excessive pressure, etc.), the first control valve 23 can quickly close to cut off the gas supply, prevent the accident from expanding, and protect the safety of equipment and personnel. The first sensor 24 is used to monitor the gas parameters in the intake pipe in real time, such as flow rate, pressure, temperature, etc. These parameters are crucial for analyzing the properties of the gas, evaluating the performance of the sampler, and ensuring the accuracy of subsequent analysis or combustion processes. The sensor converts the monitored physical quantities (such as flow rate, pressure, etc.) into electrical signals or other processable signal forms for subsequent data processing and analysis. The sensor can also be part of a feedback control system, comparing the monitored parameters with the set values and adjusting the opening of the first control valve 23 through a control algorithm to achieve precise control of the gas parameters in the intake pipe. The first data processor 25 is responsible for receiving the signals from the first sensor 24 and processing and analyzing them. It can calculate the real-time values of parameters such as gas flow rate and pressure and store historical data for subsequent analysis and comparison. Based on the processed data, the data processor can make control decisions, such as adjusting the opening of the first control valve 23 to change the gas flow rate or pressure. These decisions can be based on preset control algorithms or dynamically adjusted according to real-time working conditions. The data processor can also monitor the operating states of the intake pipe and the sampler, timely detect and diagnose potential faults or abnormal conditions. By analyzing the change trends and characteristics of the sensor data, the health status of the equipment can be predicted and corresponding maintenance measures can be taken. In summary, the first control valve 23, the first sensor 24, and the first data processor 25 provided on the intake pipe together constitute a complete control system for achieving functions such as precise control, real-time monitoring, and fault diagnosis of the gas parameters in the intake pipe. The coordinated operation of these components is of great significance for ensuring the stable operation and efficient analysis of the sampler or engine.
[0024] As Figure 2As shown, a second control valve 32 is provided on the gas outlet pipe 31. One side of the second control valve 32 is connected to a second sensor 33, and one side of the second sensor 33 is connected to a second data processor 34. The main function of the second control valve 32 is to regulate and control the gas flow rate and pressure in the gas outlet pipe 31. By adjusting the valve opening, the amount of gas discharged from the injector or related equipment can be precisely controlled to meet the requirements of subsequent processes or analyses. When abnormal conditions occur in the gas outlet pipe 31 (such as gas leakage, excessive pressure, etc.), the second control valve 32 can quickly close to cut off the gas discharge, prevent the expansion of the accident, and protect the safety of equipment and personnel. The second sensor 33 is used to monitor the gas parameters in the gas outlet pipe 31 in real time, such as flow rate, pressure, temperature, etc. These parameters are crucial for evaluating the operating state of the equipment and ensuring the accuracy of subsequent processes or analyses. Through real-time monitoring, potential problems can be detected and processed in a timely manner to avoid the occurrence or expansion of faults. The sensor converts the monitored physical quantities (such as flow rate, pressure, etc.) into electrical signals or other processable signal forms for subsequent data processing and analysis. Similar to the first sensor 24, the second sensor 33 can also be part of a feedback control system. It compares the monitored parameters with the set values and transmits the comparison results to the second data processor 34 or the control system for further adjustment and optimization. The second data processor 34 is responsible for receiving the signals from the second sensor 33 and processing and analyzing them. It can calculate the real-time values of parameters such as gas flow rate and pressure and store historical data for subsequent analysis and comparison. Through data analysis, the operating state, performance changes, and potential problems of the equipment can be understood, providing a basis for subsequent maintenance and optimization. Based on the processed data, the data processor can make control decisions, such as adjusting the opening of the second control valve 32 to change the gas flow rate or pressure. These decisions can be based on preset control algorithms or dynamically adjusted according to real-time operating conditions. The data processor can also monitor and diagnose the operating state of the gas outlet pipe 31 and related equipment. By analyzing the change trends and characteristics of sensor data, the health status of the equipment can be predicted and early warning signals can be sent in advance to take maintenance measures in a timely manner to avoid the occurrence of faults. In summary, the second control valve 32, the second sensor 33, and the second data processor 34 provided on the gas outlet pipe 31 together constitute a complete control system. They work together to achieve functions such as precise control of gas parameters in the gas outlet pipe 31, real-time monitoring, data processing and analysis, and fault diagnosis and early warning, providing a strong guarantee for the stable operation and efficient analysis of the equipment.
[0025] As shown in Figure 1, the injector body 1 is provided with rounded corners 11 on all sides; the design of the rounded corners 11 can effectively reduce the sharpness of the edges of the injector body 1, reducing the risk of injury to the operator caused by accidental collision or contact during use; when the injector contacts other equipment or components, the design of the rounded corners 11 can reduce scratches and abrasions, protect the surface of the equipment, and extend its service life; the design of the rounded corners 11 makes the appearance of the injector body 1 more smooth and beautiful, meeting the aesthetic trend of modern industrial design; through fine processing of the rounded corners 11, the overall texture and grade of the injector can be further improved, making it stand out among many pieces of equipment; during the manufacturing process, the design of the rounded corners 11 can simplify the processing flow, reducing the processing difficulty and cost. For example, in machining, the rounded corners 11 can be easily achieved through processes such as milling and grinding; the design of the rounded corners 11 helps to reduce the stress concentration phenomenon of the material during processing and use, improving the overall strength and stability of the injector.
[0026] Working principle: During the injection process, external gas or sample gas enters the injector through the inlet 2, and after being guided by the inlet pipe and the frustum 22, it reaches the gas chamber 4. In the gas chamber 4, the gas may be buffered and regulated to ensure that its flow rate and stability meet the analysis requirements. Subsequently, the gas is discharged from the outlet 3 through the outlet pipe 31 and enters the chromatographic column or other analytical equipment for further analysis.
[0027] In summary, for this injector, the two notches 21 opened at the port of the inlet 2 are used to optimize gas flow, reduce eddy currents and turbulence, thereby improving the injection accuracy; the design of the frustum 22 is used to guide the gas smoothly into the inlet pipe, reducing gas impact and energy loss. The inlet pipe is responsible for transporting the gas from the inlet 2 to the gas chamber 4, providing the necessary power or carrier gas for the subsequent sample injection process; the gas chamber 4, as the connection part between the inlet pipe and the outlet pipe 31, plays a role in buffering and regulating the gas flow rate. It ensures that the gas reaches a stable state before entering the outlet pipe 31, which is conducive to achieving accurate sample injection.
[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.
[0029] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A sample injector, comprising a sample injector body (1), characterized in that: An air inlet (2) is provided on one side wall of the injector body (1), an air outlet (3) is provided on a side wall adjacent to the side wall provided with the air inlet (2), the air inlet (2) port is provided with two notches (21), a frustum (22) is provided at the other end of the air inlet (2), the other end of the frustum (22) is connected to an air inlet pipe, the other end of the air inlet pipe is connected to an air cavity (4), one side of the air cavity (4) is connected to an air outlet pipe (31), and the air outlet pipe (31) is fixedly connected to the air outlet (3).
2. A sample injector according to claim 1, characterized in that: Seven strip-shaped heat dissipation openings (12) are provided on the side wall of the sample injector body (1) and are located next to the air outlet (3).
3. A sample injector according to claim 1, characterized in that: The air intake pipeline is provided with a first control valve (23).
4. A sample injector according to claim 3, characterized in that: One side of the first control valve (23) is connected to a first sensor (24), and one side of the first sensor (24) is connected to a first data processor (25).
5. The sample injector according to claim 1, characterized in that: The gas outlet pipeline (31) is provided with a second control valve (32).
6. A sample injector according to claim 5, characterized in that: One side of the second control valve (32) is connected to a second sensor (33), and one side of the second sensor (33) is connected to a second data processor (34).
7. A sample injector according to claim 1, characterized in that: The injector body (1) is provided with rounded corners (11) on all four sides.