Three-stage combined air duct structure

Abstract

The utility model discloses a three-stage combined air duct structure which comprises a surface layer air duct, polyester fiber sound-absorbing cotton is fixedly arranged on the inner surface of the surface layer air duct, and an inner layer air duct is fixedly arranged on the inner surface of the polyester fiber sound-absorbing cotton. The polyester fiber sound-absorbing cotton is arranged between the surface layer air duct and the inner layer air duct, noise generated by airflow in the air duct is effectively absorbed, the partition structure of the whole air duct divided into the air inlet section, the processing section and the air exhaust section is more orderly, the air processing quality and effect of the whole air duct system are efficiently improved, and under the same sectional area, the noise reduction effect is better. The circular air duct is small in perimeter, resistance of airflow flowing in the air duct is relatively small, the structural strength is high, high pressure can be borne, the application range is wide, and better economic benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wind channel technical field, concretely is a three -level combination wind channel structure. BACKGROUND

[0002] The wind channel is the passageway for conveying air, is the important component in the air handling system such as ventilation system, air conditioning system, can guide air to flow according to the predetermined route, transports air from one place to another place, just like the trachea of human body, plays the role of conveying and guiding,

[0003] Through the search, the patent literature of China discloses a kind of wind channel structure (publication number:CN216342692U), the uniformity of airflow in the wind channel structure is ensured to some extent by the multiple flow guide channels of the wind channel structure, prevent internal vortex formation, so that the flow velocity of airflow flowing out from flow guide channel is substantially consistent, but still there are following shortcomings:

[0004] The device belongs to special-shaped wind channel, compared with circular or rectangular wind channel, the structure is more complex, not only the time and cost of design increase, and in manufacturing process, manufacturing process is more complicated, due to irregular shape, once any mistake occurs to the operation such as cutting, bending and splicing of material, size deviation, connection not closely etc. Problem occurs, affect the quality of wind channel, the requirement of installation process to building space is more rigorous, maintenance work is more difficult than conventional wind channel, installation and maintenance are difficult, the rise of installation and maintenance cost, economic benefit is not high, the scope of application is smaller. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a three -level combination wind channel structure to solve the problem that special-shaped wind channel is proposed in the above background art, compared with circular or rectangular wind channel, the structure is more complex, not only the time and cost of design increase, and in manufacturing process, manufacturing process is more complicated, due to irregular shape, once any mistake occurs to the operation such as cutting, bending and splicing of material, size deviation, connection not closely etc. Problem occurs, affect the quality of wind channel, the requirement of installation process to building space is more rigorous, maintenance work is more difficult than conventional wind channel, installation and maintenance are difficult, the rise of installation and maintenance cost, economic benefit is not high, the scope of application is smaller.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a three-stage combined air duct structure, including a surface air duct, wherein polyester fiber sound-absorbing cotton is fixedly disposed on the inner surface of the surface air duct, and an inner air duct is fixedly disposed on the inner surface of the polyester fiber sound-absorbing cotton; the polyester fiber sound-absorbing cotton has a large number of interconnected micropores inside, and when sound propagates into the sound-absorbing cotton, the sound energy is converted into heat energy and consumed, which can effectively absorb the noise generated by the airflow in the air duct, avoid the echo or resonance phenomenon caused by the air duct noise, and make the indoor sound environment more comfortable and pleasant.

[0007] Preferably, one end of the inner cavity of the inner air duct is provided with an air inlet section, the middle of the inner cavity of the inner air duct is provided with a treatment section, and the other end of the inner cavity of the inner air duct is provided with an exhaust section. The air inlet section provides preliminary guidance and pretreatment for the air entering the air duct, ensuring that the air entering the air duct is relatively clean. The treatment section processes the air, and the exhaust section can effectively discharge or transport the processed air to a designated location, ensuring good circulation of indoor air. This partitioned structure also facilitates independent maintenance and repair of different functional sections. When a problem occurs in one functional section, it will not affect the normal operation of other functional sections, thus improving the reliability and maintainability of the entire air duct system.

[0008] Preferably, both the air inlet section and the air outlet section are fixedly connected with a separation filter structure, and both ends of the processing section are fixedly connected with a heat dissipation conveying structure. Setting a separation filter structure in the air inlet section can effectively intercept impurities in the air. Setting a separation filter structure in the air outlet section can prevent impurities remaining in the air duct from being directly discharged into the external environment with the exhaust air. Setting a heat dissipation conveying structure at both ends of the processing section can help to effectively regulate the air temperature.

[0009] Preferably, the partitioned filtration structure includes two filter screens, each with a fixed mounting frame on its outer side. Two diversion support nets are positioned between the two filter screens, arranged vertically. When air enters the inlet section or leaves the outlet section, it first contacts the first filter screen, intercepting larger particles. After passing through the first layer of filtration, some smaller impurities are further intercepted by the second filter screen, significantly improving the filtration effect and ensuring cleaner air entering the inlet section. The two vertically distributed diversion support nets evenly distribute the airflow, preventing excessively strong or weak local airflow and providing support between the two filter screens, enhancing the overall stability of the partitioned filtration structure. Once a certain amount of dirt accumulates on the filter screens, they can be removed for easy cleaning and maintenance.

[0010] Preferably, the heat dissipation and conveying structure includes a fan frame, a fan filter plate is fixedly installed on one side of the fan frame, and an exhaust fan is installed inside the fan frame; the fan frame provides a stable installation position for the exhaust fan, ensuring that the exhaust fan remains stable during operation; the fan filter plate is the last step of protection for the fan, effectively preventing impurities from entering the fan, extending the service life of the exhaust fan, reducing maintenance frequency; the exhaust fan provides power for the airflow in the processing section, absorbing air from the intake section and conveying it to the exhaust section, achieving efficient air treatment.

[0011] Preferably, both the surface air duct and the inner air duct are made of stainless steel; they have extremely high corrosion resistance, are not afraid of various harsh environments, have high strength, can withstand greater pressure and impact, have a long service life, and have a smooth surface, which reduces airflow resistance and helps improve ventilation efficiency.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This three-stage combined air duct structure incorporates polyester fiber sound-absorbing cotton between the surface and inner air ducts, effectively absorbing noise generated by airflow within the duct. The duct's partitioned structure, consisting of an inlet section, a treatment section, and an exhaust section, is more orderly and efficient, improving the quality and effectiveness of the entire air handling system. Furthermore, for the same cross-sectional area, the circular air duct has a smaller circumference, resulting in relatively lower airflow resistance. It also boasts higher structural strength, can withstand higher pressures, has a wider range of applications, and offers better economic benefits. Attached Figure Description

[0014] Figure 1 This is a side view of a three-stage combined air duct structure according to the present invention;

[0015] Figure 2 This is a cross-sectional view of a three-stage combined air duct structure according to the present invention;

[0016] Figure 3 This is a schematic diagram of the separation and filtration structure of this utility model;

[0017] Figure 4 This is a front view of the heat dissipation and conveying structure of this utility model;

[0018] Figure 5 This is a rear view of the heat dissipation and conveying structure of this utility model.

[0019] In the diagram: 1. Air inlet section; 2. Treatment section; 3. Exhaust section; 4. Surface air duct; 5. Polyester fiber sound-absorbing cotton; 6. Inner air duct; 7. Filter screen; 8. Mounting frame; 9. Diversion support mesh; 10. Fan frame; 11. Fan filter plate; 12. Supply fan. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figures 1-5 This utility model provides a three-level combined air duct structure, including a surface air duct 4, a polyester fiber sound-absorbing cotton 5 fixedly arranged on the inner surface of the surface air duct 4, and an inner air duct 6 fixedly arranged on the inner surface of the polyester fiber sound-absorbing cotton 5.

[0022] When in use, the surface air duct 4 withstands the pressure from the external environment, protects the internal components and maintains the overall shape of the air duct, and provides a stable foundation for the internal polyester fiber sound-absorbing cotton 5 and the inner air duct 6. The polyester fiber sound-absorbing cotton 5 reduces the noise generated during the operation of the air duct and creates a quiet and comfortable spatial environment.

[0023] Please see Figures 1-5 Furthermore, one end of the inner cavity of the inner air duct 6 is provided with an air inlet section 1, the middle of the inner cavity of the inner air duct 6 is provided with a treatment section 2, and the other end of the inner cavity of the inner air duct 6 is provided with an exhaust section 3.

[0024] During use, the air intake section 1 intercepts impurities and performs preliminary filtration, laying a good foundation for the stable operation of the treatment section 2 and the exhaust section 3. The treatment section 2 processes the air to meet actual needs, and the exhaust section 3 discharges the air processed by the treatment section 2 to the outside or a designated area, ensuring that the air can leave the duct system smoothly and orderly.

[0025] Please see Figures 1-5 Furthermore, both the interior of the air inlet section 1 and the interior of the air outlet section 3 are fixedly connected with a separation filter structure, and both ends of the interior of the treatment section 2 are fixedly connected with a heat dissipation conveying structure.

[0026] During use, the separation and filtration structure inside the air inlet section 1 performs preliminary purification of the incoming air, the heat dissipation and conveying structure inside the processing section 2 processes and conveys the preliminarily purified air, and the separation and filtration structure inside the exhaust section 3 performs final purification of the air conveyed from the processing section 2 and releases it.

[0027] Please see Figure 3 Furthermore, the separation filter structure includes two filter screens 7, and each of the two filter screens 7 is fixedly connected to an installation frame 8. Two diversion support nets 9 are provided between the two filter screens 7, and the two diversion support nets 9 are distributed in a vertical state.

[0028] When in use, the filter screen 7 blocks impurities. The filter screen 7 is installed inside the inner air duct 6 through the mounting frame 8. When it is necessary to perform maintenance operations such as cleaning or replacing the filter screen 7, the filter screen 7 can be removed by disassembling the mounting frame 8. The diversion support net 9 evenly disperses the airflow, making the air evenly distributed in the air duct and making the exhaust air more stable and uniform.

[0029] Please see Figures 4-5 Furthermore, the heat dissipation and delivery structure includes a fan frame 10, a fan filter plate 11 is fixedly installed on one side of the fan frame 10, and a fan 12 is provided inside the fan frame 10.

[0030] When in use, the fan bracket 10 provides a stable mounting platform for the delivery fan 12, the fan filter plate 11 blocks impurities from entering the fan, extending the service life of the delivery fan 12, and the delivery fan 12 ensures that the air can circulate in the processing section 2 and deliver the processed air.

[0031] Please see Figures 1-5 Furthermore, both the surface air duct 4 and the inner air duct 6 are made of stainless steel.

[0032] When in use, it can adapt to a variety of environments and can effectively resist the pressure from the external environment and internal air circulation. While maintaining its own structural integrity, it ensures that air flows smoothly and stably within the air duct, guaranteeing the normal operation of subsequent ventilation or air handling functions.

[0033] In this embodiment, air enters the air intake section 1, where filter 7 blocks large particles of impurities, and the diversion support net 9 evenly disperses the airflow. Another filter 7 further filters the air, which then enters the processing section 2. The fan 12 absorbs the air from the air intake section 1 and simultaneously delivers it to the exhaust section 3. Filter 7 and diversion support net 9 then perform final filtration and purification on the air delivered from the processing section 2 before releasing it into various environments. Polyester fiber sound-absorbing cotton 5 eliminates the noise generated when the air flows in the duct, creating a quiet and comfortable acoustic environment.

[0034] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A three-stage combined air duct structure, comprising a surface air duct (4), characterized in that: The inner surface of the surface air duct (4) is fixedly provided with polyester fiber sound-absorbing cotton (5), and the inner surface of the polyester fiber sound-absorbing cotton (5) is fixedly provided with an inner air duct (6). One end of the inner cavity of the inner air duct (6) is provided with an air inlet section (1), the middle of the inner cavity of the inner air duct (6) is provided with a processing section (2), and the other end of the inner cavity of the inner air duct (6) is provided with an exhaust section (3); the interior of the air inlet section (1) and the interior of the exhaust section (3) are both fixedly connected with a separation filter structure, and both ends of the interior of the processing section (2) are fixedly connected with a heat dissipation conveying structure; The separation filter structure includes two filter screens (7), and an installation frame (8) is fixedly connected to the outer side of each of the two filter screens (7). Two diversion support nets (9) are provided between the two filter screens (7), and the two diversion support nets (9) are distributed vertically.

2. The three-stage combined air duct structure according to claim 1, characterized in that: The heat dissipation and conveying structure includes a fan frame (10), a fan filter plate (11) is fixedly provided on one side of the fan frame (10), and a fan (12) is provided inside the fan frame (10).

3. The three-stage combined air duct structure according to claim 1, characterized in that: Both the surface air duct (4) and the inner air duct (6) are made of stainless steel.

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