Low-flow gas dehumidification device
By designing a low-flow gas dehumidification device including DC pump, humidity meter, ball valve, pipeline and molecular sieve, the shortcomings of existing devices in terms of accuracy and stability in humidity control are solved, and the precise control and stability of gas humidity is achieved, which is suitable for applications with long-term continuous operation.
Patent Information
- Application Number
- CN202510343324.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-06-27
AI Technical Summary
The existing gas configuration devices have shortcomings in the accuracy and stability of humidity control, especially in application scenarios where long-term continuous operation is required, it is difficult to meet the accuracy and stability requirements of humidity control.
A low-flow gas dehumidification device is designed, including a DC pump, a humidity meter, a ball valve, a pipeline and a molecular sieve. Water vapor is adsorbed through the molecular sieve and gas proportion is controlled through the ball valve to achieve accurate control of gas humidity.
It realizes precise control of gas humidity, maintains high stability and ease of use, and is suitable for long-term continuous operation application scenarios.
Smart Images
Figure CN120204967A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of gas dehumidification, and particularly to a device for dehumidifying low-flow gas. The device can meet the requirements of various application scenarios such as scientific experiments, industrial production, and environmental simulation by precisely controlling the humidity of the gas. Background Art
[0002] In many fields such as scientific experiments, medical treatment, food processing, and semiconductor manufacturing, it is crucial to precisely control the humidity of the gas. For example, in the semiconductor manufacturing process, even a slight change in humidity may have a significant impact on the quality and performance of the product. Therefore, it is particularly important to develop a device that can accurately and stably configure gas with a certain humidity.
[0003] Currently, there are various gas configuration devices on the market. However, these devices still have some problems in practical applications. For example, some devices have high operation and maintenance costs due to their complex designs; while some other devices are easy to operate, but still need to be improved in terms of the accuracy and stability of humidity control. Especially in application scenarios that require long-term continuous operation, the humidity control accuracy and stability of existing devices often fail to meet the requirements. Therefore, developing a gas configuration device with a simple structure, convenient operation, accurate and stable humidity control has become an urgent problem to be solved.
[0004] Aiming at the deficiencies of the existing technology, the present invention proposes a new device for dehumidifying low-flow gas, aiming to solve problems such as inaccurate humidity control, poor stability, and complex operation. Through innovative design and optimized control strategies, the device realizes precise control of the gas humidity while maintaining high stability and ease of use. Summary of the Invention
[0005] The present invention is a simple device for dehumidifying low-flow gas, which is used to improve the problems of complex operation or insufficient stability of conventional gas dehumidification devices.
[0006] A device for dehumidifying low-flow gas of the present invention patent mainly includes: a DC pump, a hygrometer, a ball valve, a pipeline, and a chuck for connecting them. It is characterized in that: the DC pump conveys a certain flow rate of gas, and the gas enters two different pipelines. The ball valve controls the proportion of the gas entering the two pipelines. One of the pipelines is filled with molecular sieve for water absorption. After the gas passes through the two pipelines, they converge. The hygrometer is connected at the outlet to detect the outlet humidity. Finally, the target humidity can be achieved by changing the opening degree of the ball valve.
[0007] The described adsorption molecular sieve is characterized in that the molecular sieve has a uniform microporous structure. The pore size of these micropores is approximately 4 angstroms (0.4 nanometers), which is equivalent to a precise small sieve and only allows molecules of a specific size to pass through. The size of water molecules is less than 4 angstroms, so they can be adsorbed by the micropores of the molecular sieve.
[0008] The described gas pipeline is characterized in that the gas pipeline is in a "mouth" shape. Three sides are bent downward at a bending angle of 90°. The molecular sieve is filled on the right side of the "mouth" - shaped pipeline. Air normally passes through the left side of the "mouth" - shaped pipeline and finally converges at the lower left corner of the "mouth" - shaped pipeline. After passing through a certain length of pipeline buffer, air with a certain humidity can be obtained.
[0009] A stainless - steel filter mesh is added to the pipeline where the molecular sieve is placed to prevent the molecular sieve from entering the pipeline on the other side.
[0010] Through the above technical solutions, when a gas with a certain humidity enters, it is split into two streams. One stream of gas is in full contact with the molecular sieve, and the water vapor carried by it is adsorbed. The other stream of gas maintains its original humidity. By changing the opening degree of the ball valve, the proportion of the two streams of gas can be changed, so that a gas with a target humidity can be configured. Description of the Drawings
[0011] Figure 1 It is a schematic structural diagram of a device for dehumidifying low - flow gas proposed by the present invention;
[0012] Figure 2 It is a schematic diagram of the gas flow direction inside the device;
[0013] Among them: 1 is a DC pump; 2 is a ball valve; 3 is a humidity meter; 4 is a molecular sieve; 5 is a stainless - steel pipeline; 6 is a chuck connecting the stainless - steel pipelines. Detailed Embodiment
[0014] To make the objectives, technical solutions, and advantages of this application clearer, the following further elaborates on this application in detail with reference to specific embodiments and the attached drawings.
[0015] Such as Figure 1-2As shown, a device for dehumidifying low-flow gas includes a DC pump 1, a ball valve 2, a hygrometer 3, molecular sieves 4, a stainless-steel pipe 5, and a chuck 6 for connecting them. The DC pump transports gas, which enters the pipe through a rubber hose. After the gas enters the pipe, it splits into two parts. One part of the gas passes through the pipeline where the ball valve 2 is located, and the other part passes through the pipeline where the molecular sieves 4 are located. By changing the opening degree of the ball valve 2, the proportion of the two parts of gas can be changed. When the gas flows through the molecular sieves 4, the water vapor carried by it is adsorbed by the molecular sieves 4. After the two parts of gas flow through their respective pipelines, they converge into one part. After the two parts of gas are mixed, the hygrometer 3 measures its humidity. By changing the opening degree of the ball valve 2, the target humidity can be achieved.
[0016] The device for configuring gas with a certain humidity according to the present invention is used for the test of configuring air with a relative humidity of 20%. The relative humidity in the atmospheric environment before adsorption is 60%. Molecular sieves are filled in the right side of the "mouth"-shaped pipe pipeline. The DC pump is turned on to blow air. When the ball valve is fully closed, all the air blown by the branch pump flows through the right side of the "mouth"-shaped pipe pipeline. At this time, the outlet humidity is about 1%. Then, the ball valve is slowly opened so that a part of the air blown by the DC pump normally passes through the pipeline. After the wet air and the dry air are mixed, they flow through another section of the pipeline. This is to make the two parts of air fully mixed to make the result more accurate. It can be observed that the reading of the outlet hygrometer slowly increases. The opening degree of the ball valve is adjusted until the reading of the outlet hygrometer is 20%.
[0017] The arrangements of the above device and method only illustrate the application of the present invention. More other embodiments and variations can be proposed without departing from the spirit and the scope of patent protection of the present invention. Therefore, the scope of the present invention should not be limited to the above, but should refer to the entire scope of the appended claims and their equivalents.
Claims
1. A low-flow gas dehumidification device, mainly comprising: DC pump, hygrometer, ball valve, pipeline and chuck for its connection. It is characterized in that: the DC pump transports a certain flow of gas, the gas enters two different pipelines, and the ball valve controls the proportion of air entering the two pipelines. Molecular sieve is filled in one of the pipelines to absorb water. The gas converges after passing through the two pipelines, and a hygrometer is connected at the outlet to detect the outlet humidity. Finally, the target humidity can be achieved by changing the opening degree of the ball valve.
2. The adsorbent molecular sieve according to claim 1, characterized in that: The molecular sieve has a uniform microporous structure. The pore size of these micropores is about 4 angstroms (0.4 nanometers), which is equivalent to a precise small sieve that only allows molecules of a specific size to pass through. The size of water molecules is less than 4 angstroms, so they can be adsorbed by the micropores of the molecular sieve.
3. The gas pipeline according to claim 1, characterized in that: The gas pipeline is in the shape of a "mouth". Three sides are bent downward at an angle of 90°. The molecular sieve is filled in the right side of the "mouth" - shaped pipeline. Air normally passes through the left side of the "mouth" - shaped pipeline and finally converges at the lower left corner of the "mouth" - shaped pipeline. After a certain length of pipeline buffer, gas with a certain humidity can be obtained.
4. Add a stainless - steel filter mesh in the pipeline where the molecular sieve is placed as described in claim 1 to prevent the molecular sieve from entering the other pipeline.