Energy-saving and environment-friendly air curtain structure
By designing an energy-saving and environmentally friendly air curtain structure on the stenter, and using inclined guide plates and air curtain troughs to form an air curtain, the problem of low efficiency in traditional flue gas collection methods is solved, achieving efficient isolation of flue gas and heat recovery, and reducing energy consumption and workshop pollution.
Patent Information
- Application Number
- CN202521350628.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-15
- Estimated Expiration
- 2035-06-30
AI Technical Summary
Traditional methods for collecting fumes from stenters are inefficient, making it difficult to effectively control the spread of pollutants, endangering employee health and polluting the workshop environment, and failing to meet environmental protection requirements.
Design an energy-saving and environmentally friendly air curtain structure that uses inclined guide plates and air curtain troughs to form a 45-degree angle air curtain to isolate high-temperature flue gas inside the stenter, and treat the flue gas that is not completely isolated through a second cavity to achieve double protection.
It significantly reduces the energy consumption of the stenter, reduces flue gas leakage, provides a safe and healthy working environment, and meets environmental protection standards.
Smart Images
Figure CN224243477U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of setting machine technology, and in particular to an energy-saving and environmentally friendly air curtain structure. Background Technology
[0002] In industries such as textile printing and dyeing, and leather processing, setting machines are key equipment used to shape fabrics or leather. During operation, these machines generate large amounts of high-temperature fumes containing harmful chemicals. If these fumes leak into the workshop, they not only pose serious health risks to operators but also pollute the workshop environment and disrupt normal production. Traditional methods rely solely on fume hoods for end-of-pipe treatment, collecting the fumes under negative pressure after they have escaped. However, due to the typically tens of centimeters of distance between the fume hood and the setting machine's fume outlet, a large amount of high-temperature fumes diffuses into the workshop space before extraction. This passive collection method is not only inefficient but also fails to effectively control pollutant diffusion, resulting in the long-term presence of harmful gases in the workshop, endangering employee occupational health and severely impacting the quality of the production environment. With increasingly stringent environmental and occupational health standards, this traditional approach is no longer sufficient to meet the industry's green development needs.
[0003] Therefore, those skilled in the art have provided an energy-saving and environmentally friendly air curtain structure to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and to provide an energy-saving and environmentally friendly air curtain structure. Through innovative design, this structure effectively isolates the large amount of high-temperature flue gas and heat generated during the operation of the stenter within the equipment. Simultaneously, to address the possibility of a small amount of escaping flue gas, a second chamber is specially designed. Even if a trace amount of flue gas escapes, it can be quickly adsorbed and recovered, reducing harmful gas emissions at the source and significantly lowering the risk of environmental pollution in the workshop, thus achieving both environmental protection and energy-saving benefits.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] An energy-saving and environmentally friendly air curtain structure includes a protective shell, with a smoke exhaust port and an air inlet at the upper end of the protective shell. A partition is provided in the middle of the interior of the protective shell, which divides the interior of the protective shell into two parts between the smoke exhaust port and the air inlet. An air curtain baffle is fixedly provided on the side of the interior of the protective shell near the air inlet, and an inclined guide plate is fixedly provided at the lower end of the partition.
[0007] An air curtain groove is provided between the lower end of the air curtain baffle and the inclined guide plate. After high-temperature pressurized clean air is introduced into the air inlet, it forms an air curtain through the air curtain groove.
[0008] Furthermore, the protective outer shell is provided with multiple internal guide plates.
[0009] Furthermore, the width of the air curtain groove (7) is 1-3mm, preferably 2mm, and the inclined guide plate (4) is tilted at 45° toward the side of the air inlet (3).
[0010] This utility model has the following beneficial effects:
[0011] 1. This utility model proposes an energy-saving and environmentally friendly air curtain structure. The inclined guide plate is tilted at 45° towards the air inlet, and the width of the air curtain groove is set to 2mm. Clean, high-temperature air passes through the guide plate and forms an air curtain at a 45-degree angle to the outlet of the stenter through the 2mm outlet. This unique structural design can guide the hot air blown out of the air curtain into the stenter, allowing heat to be simultaneously replenished into the stenter. This greatly reduces the additional energy required to replenish the stenter due to heat loss during operation, significantly reducing energy consumption and saving production costs for enterprises.
[0012] 2. This utility model proposes an energy-saving and environmentally friendly air curtain structure. This air curtain structure first isolates the flue gas inside the stenter that has not been removed by the exhaust fan. For any remaining flue gas, it is drawn away by a second chamber and piped to the exhaust fan inlet. This dual-protection mechanism minimizes flue gas leakage into the workshop, effectively reducing flue gas pollution and providing a safer and healthier working environment for operators. It also meets relevant national standards for environmental protection in industrial production. Attached Figure Description
[0013] Figure 1 This is an axonometric view of the present invention;
[0014] Figure 2 This is an axonometric view of the present invention from another perspective;
[0015] Figure 3 This is a cross-sectional view of the present invention;
[0016] Figure 4 This is a side sectional view of the present invention.
[0017] Legend:
[0018] 1. Protective outer shell; 2. Smoke exhaust port; 3. Air inlet; 4. Angled guide vane; 5. Inner guide vane; 6. Air curtain baffle; 7. Air curtain trough. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Reference Figures 1-4 As shown, an energy-saving and environmentally friendly air curtain structure includes a protective shell 1. The upper end of the protective shell 1 is provided with a smoke exhaust port 2 and an air inlet 3. A partition is provided in the middle of the interior of the protective shell 1. The partition is located between the smoke exhaust port 2 and the air inlet 3, dividing the interior of the protective shell 1 into two parts. An air curtain baffle 6 is fixedly provided on the side of the interior of the protective shell 1 near the air inlet 3. An inclined guide plate 4 is fixedly provided at the lower end of the partition. The inclined guide plate 4 is inclined at 45° towards the side of the air inlet 3. An air curtain groove 7 is provided between the lower end of the air curtain baffle 6 and the inclined guide plate 4. The width of the air curtain groove 7 is 2mm. After high temperature and pressure clean air is introduced into the air inlet 3, it forms an air curtain through the air curtain groove 7.
[0021] Specifically, based on fluid mechanics principles, high-temperature, pressurized clean air enters the protective casing 1 through air inlet 3 and flows towards the inclined guide plate 4 under the obstruction and guidance of the air curtain baffle 6. The 45° inclination of the inclined guide plate 4 allows the air to be ejected at a specific angle and speed when passing through the air curtain slot 7. When the air passes through the 2mm wide air curtain slot 7, the flow velocity increases significantly due to the narrowing of the channel, forming a high-speed airflow, which in turn forms a dense air curtain at the stenter outlet. The air curtain forms a 45-degree angle with the stenter outlet, utilizing the inertia and angle of the airflow to not only effectively block the leakage of flue gas but also guide hot air into the stenter. Ultimately, this structure, through the precisely designed 45° inclined guide plate 4 and the width of the air curtain slot 7, enables the air curtain to achieve both efficient flue gas blocking and heat recovery.
[0022] The protective outer shell 1 has multiple internal guide plates 5 inside;
[0023] Specifically, the inner guide vanes 5 adopt a streamlined design with a spacing of 15-20cm and an angle of 30-45° with the airflow direction. When air flows inside the protective shell 1, the inner guide vanes 5 can guide and divert the airflow multiple times, making the airflow more uniform and stable towards the air curtain groove 7, avoiding airflow turbulence, eddies, and other phenomena, and ensuring the stability and uniformity of the air curtain formation. Thus, the arrangement of multiple inner guide vanes 5 effectively optimizes the airflow state inside the protective shell 1.
[0024] In this invention, the protective shell serves as the external load-bearing and protective component of the overall structure, providing installation space for internal components. Its upper end is equipped with a smoke exhaust port and an air inlet, used to exhaust collected flue gas and input high-temperature, pressurized clean air, respectively. The partition is located in the middle of the protective shell, between the smoke exhaust port and the air inlet, dividing the interior of the protective shell into two parts, thus defining different functional areas. The air curtain baffle is fixed inside the protective shell near the air inlet, providing initial obstruction and guidance for the input high-temperature, pressurized clean air. The inclined guide plate is fixed at the lower end of the partition, tilted at 45° towards the air inlet, and works with the air curtain baffle to guide airflow into the air curtain groove. An air curtain groove, 1-3mm wide (preferably 2mm), is provided between the lower end of the air curtain baffle and the inclined guide plate. After the high-temperature, pressurized clean air is input through the air inlet, it forms an air curtain through the air curtain groove, preventing the leakage of flue gas from the setting machine and guiding heat backflow. Inner deflector: Multiple deflectors are installed inside the protective shell. They adopt a streamlined design, are spaced 15-20cm apart, and are angled at 30-45° with the airflow direction. They are used to optimize the airflow state inside the protective shell, so that the airflow flows more evenly and stably to the air curtain channel.
[0025] Example 1: An energy-saving and environmentally friendly air curtain structure, installation and layout: The protective shell 1 is installed at the corresponding position on the stenter, ensuring that the exhaust port 2 and air inlet 3 are connected to the appropriate pipes; the partition, air curtain baffle 6, and inclined guide plate 4 are fixed inside the protective shell 1 according to the design position, ensuring the accurate positional relationship of each component, and the dimensions of the air curtain groove 7 meet the requirements; refer to Figure 3 As shown, multiple internal guide vanes 5 are arranged in a streamlined shape with specific spacing and angles in the airflow channel inside the protective shell 1.
[0026] Airflow guidance and air curtain formation: During the operation of the stenter, high-temperature, pressurized clean air enters the space near the air inlet side of the protective shell 1 from the air inlet 3. Blocked by the air curtain baffle 6 and guided by the inclined guide plate 4, the airflow flows towards the air curtain trough 7. Due to the narrow width (2mm) of the air curtain trough 7 and the 45° inclination of the inclined guide plate, the high-speed airflow forms an air curtain at a 45-degree angle to the stenter outlet, achieving smoke blockage and heat conduction. The inner guide plate 5 repeatedly combs the airflow, ensuring stable and uniform airflow and improving the quality of the air curtain.
[0027] Secondary flue gas treatment: A small amount of flue gas that is not completely blocked by the air curtain enters another cavity of the protective shell 1 separated by the partition, and is transported to the inlet of the exhaust fan through the connecting pipe. It is then discharged and treated by the exhaust fan, achieving low-pollution control of flue gas in the workshop.
[0028] In this embodiment, efficient isolation and heat recovery are achieved through a 45° inclined guide plate design combined with a 2mm air curtain groove, creating a 45° angle air curtain between the high-temperature, pressurized clean air and the stenter outlet. On one hand, the dense air curtain effectively blocks any remaining flue gas inside the stenter, reducing leakage. On the other hand, by utilizing airflow angle and inertia, hot air is guided into the stenter, recovering heat and reducing the need for additional energy replenishment due to heat loss, significantly reducing energy consumption and saving production costs. Optimized airflow and a stable air curtain are also achieved: multiple inner guide plates, with reasonable spacing and angle settings, guide and divert airflow multiple times within the protective shell, avoiding airflow turbulence and eddies, ensuring the stability and uniformity of the air curtain formation, and improving the reliability of flue gas isolation. Dual protection reduces pollution: the air curtain first blocks most of the flue gas inside the stenter; a small amount of unisolated flue gas enters the second cavity separated by the partition and is discharged through a pipe to the exhaust fan inlet, minimizing workshop flue gas pollution, protecting operator health, and meeting industrial environmental protection requirements.
[0029] Working Principle: When the stenter is running, high-temperature, pressurized clean air is input into air inlet 3. The air enters the protective shell 1 near air inlet 3. Under the combined action of the air curtain baffle 6 and the inclined guide plate 4, the air is guided to the air curtain trough 7. Since the air curtain trough 7 is only 2mm wide and the inclined guide plate 4 is tilted at 45°, the high-temperature, pressurized clean air is ejected at high speed from the air curtain trough 7, forming an air curtain at a 45-degree angle to the stenter outlet. This air curtain can form an effective air curtain barrier at the stenter outlet, isolating the flue gas inside the stenter that has not been drawn away by the exhaust fan. At the same time, due to the angle setting of the air curtain, the blown hot air can be guided into the stenter, realizing heat recovery and utilization, and reducing energy consumption. For some flue gas that is not completely isolated by the air curtain, it will enter the second cavity separated by the partition inside the protective shell 1, and then be transported to the exhaust fan inlet through the pipe connected to this cavity, and finally discharged by the exhaust fan, thereby effectively reducing the flue gas pollution in the workshop.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An energy-saving and environmentally friendly air curtain structure, characterized in that, Includes a protective shell (1), the upper end of which is provided with a smoke exhaust port (2) and an air inlet (3), a partition is provided in the middle of the interior of the protective shell (1), the partition is located between the smoke exhaust port (2) and the air inlet (3) and divides the interior of the protective shell (1) into two parts, an air curtain baffle (6) is fixedly provided on the side of the interior of the protective shell (1) near the air inlet (3), and an inclined guide plate (4) is fixedly provided at the lower end of the partition; An air curtain groove (7) is provided between the lower end of the air curtain baffle (6) and the inclined guide plate (4). After high temperature and pressure clean air is introduced into the air inlet (3), an air curtain is formed through the air curtain groove (7).
2. The energy-saving and environmentally friendly air curtain structure according to claim 1, characterized in that, The protective shell (1) is provided with multiple internal guide plates (5).
3. The energy-saving and environmentally friendly air curtain structure according to claim 1, characterized in that, The width of the air curtain groove (7) is 1-3mm.
4. The energy-saving and environmentally friendly air curtain structure according to claim 3, characterized in that, The width of the air curtain groove (7) is 2mm.
5. The energy-saving and environmentally friendly air curtain structure according to claim 1, characterized in that, The inclined guide plate (4) is tilted at 45° toward the side of the air inlet (3).
6. The energy-saving and environmentally friendly air curtain structure according to claim 2, characterized in that, The inner guide plate (5) adopts a streamlined design with a spacing of 15-20cm and an angle of 30-45° with the airflow direction.