Fresh air device of dust-free down filling room recovery system
By designing a fresh air device for a cleanroom down filling room recycling system, using fiber mesh and activated carbon plates to filter and purify the air, the problem of temperature overflow caused by direct air discharge in traditional systems is solved, achieving air recycling and energy saving, and improving the cleanliness and efficiency of the production environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG HONGRUN INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional cleanroom down filling recycling systems directly release air under different climatic conditions, causing indoor temperature to leak out, increasing energy consumption, and affecting production costs and efficiency.
Design a fresh air device for a dust-free down filling room recycling system, including a fresh air box, a fan, a filter layer and a silencer. It uses fiber mesh and activated carbon plates to filter and purify the air, and the silencer reduces noise to achieve air recycling.
It effectively filters down and purifies the air, reduces down leakage, improves air purity, reduces energy consumption, creates a healthy and comfortable working environment, and ensures production quality.
Smart Images

Figure CN224230233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of air purification equipment, and in particular to a fresh air device for a dust-free down filling room recovery system. Background Technology
[0002] In traditional down processing, the conventional cleanroom down filling chamber recovery system plays a crucial role, primarily responsible for handling the air-down mixture generated during the filling process to maintain the cleanliness of the filling environment. However, this system has a significant design flaw. Specifically, when the fan starts operating, it directly discharges the filtered air from the down filling chamber into the outside environment.
[0003] This simple emission method can cause a series of problems detrimental to the production environment under varying climatic conditions during seasonal changes. In the sweltering summer, when outside temperatures are already high, the filling room typically requires cooling equipment such as air conditioners to maintain a suitable production temperature. However, when the fans directly exhaust the cooled air from inside, it's equivalent to wasting energy that wasted cooling the air. As this cold air is continuously expelled, the indoor cooling capacity is constantly lost. To maintain the set low-temperature production environment inside the filling room, the air conditioning system has to increase its cooling capacity, consuming more electricity to compensate for the lost cooling capacity, which undoubtedly increases the company's production costs.
[0004] In the cold winter, the situation is quite the opposite. To create a warm and comfortable working environment for the staff, and to ensure the normal operation of temperature-sensitive processes in down processing, the filling room is heated by radiators and other heating equipment. However, fans directly exhaust the heated air from inside to the outside, causing heat to escape rapidly. To maintain a stable indoor temperature, the heating equipment needs to operate continuously at high loads, constantly replenishing heat. This also leads to significant energy consumption, making the heat loss problem particularly severe and seriously affecting the energy efficiency and sustainability of the filling room's production. Utility Model Content
[0005] This utility model proposes a fresh air device for a dust-free down filling room recycling system. This device has the significant advantage of air circulation and purification. Its design purpose is to effectively solve the problem mentioned in the background art, which is that the indoor temperature overflows severely due to the direct output of air.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fresh air device for a dust-free down filling room recovery system, comprising: a fresh air box, in which a fan is installed, and an air intake pipe is installed on the input end of the fan, which can draw in air from the down filling room; an exhaust box, fixed to the top of the fresh air box, into which the fan can deliver the air drawn in by the air intake pipe; and a filter layer that can filter and purify the air is installed on the side and top of the exhaust box, thereby purifying the air inside the exhaust box.
[0007] Furthermore, the filter layer includes a fiber mesh and an activated carbon plate.
[0008] Furthermore, a perforated exhaust plate located on one side of the filter layer is securely installed on the outer side of the exhaust box.
[0009] Furthermore, a conversion pipe is installed on top of the exhaust box and above the filter layer.
[0010] Furthermore, a silencer is fixedly installed on the top of the new air box and at the output end of the fan. The silencer can deliver the airflow output by the fan to the inner cavity of the exhaust box.
[0011] This utility model has the following beneficial effects:
[0012] This utility model provides a fresh air device for a dust-free down filling room recycling system, which has multiple filter layers in the exhaust box, and these filter layers have filtration and purification functions.
[0013] On the one hand, the filter layer, with its fine fiber structure, can effectively intercept down feathers mixed in with the airflow. When the airflow containing down feathers passes through the filter layer, the down feathers are precisely adsorbed, captured, and fixed on the surface of the filter layer, thereby achieving effective filtration of down feathers in the airflow, preventing down feathers from leaking out and polluting the surrounding environment, and also ensuring the smooth operation of subsequent air treatment processes.
[0014] On the other hand, the activated carbon and other purification materials inside can adsorb impurities such as fine particulate matter, harmful gases, and odor molecules in the air. Through multiple mechanisms such as physical adsorption, chemical adsorption, and ion exchange, the filter layer can deeply purify the air, remove harmful substances, and significantly improve the purity of the air entering the down filling room. This creates a healthy and comfortable working environment for staff and also helps ensure the production quality of down products. Attached Figure Description
[0015] The accompanying drawings, which form part of this specification, illustrate embodiments of the present invention and, together with the specification, serve to explain the principles disclosed herein.
[0016] The present invention can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:
[0017] Figure 1 This is a three-dimensional front view of the present invention.
[0018] Figure 2 This is a three-dimensional structural diagram of the overall back of this utility model;
[0019] Figure 3 This is a schematic diagram of the overall internal three-dimensional structure of this utility model;
[0020] Figure 4 This is a three-dimensional structural diagram of the fan of this utility model;
[0021] Figure 5 This is a three-dimensional structural diagram of the conversion tube of this utility model.
[0022] In the diagram: 1. Fresh air box; 2. Exhaust box; 3. Perforated exhaust plate; 4. Conversion pipe; 5. Fan; 501. Intake pipe; 6. Silencer; 7. Filter layer. Detailed Implementation
[0023] 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.
[0024] Example 1, please refer to Figure 1 and Figure 2 It can be seen that the new air box 1 uses a steel frame as internal support, and its exterior is fitted with metal plates. For example... Figure 1 As shown, the new air box 1 is cube-shaped, and the four corners of the bottom of the new air box 1 are equipped with casters. The casters can not only effectively support the new air box 1, but also facilitate the transportation of the new air box 1.
[0025] Combination Figure 3 and Figure 4 It can be seen that the new air box 1 contains a fan 5 connected by bolts. An air intake pipe 501 is installed on the airflow inlet of the fan 5. The air intake pipe 501 is generally located inside the down filling chamber, thus absorbing the air inside the filling chamber for subsequent air purification. Regarding the structure of the fan 5, from... Figure 3 and Figure 4 It can be seen that it is mainly a vortex blower, equipped with a permanent magnet synchronous motor and a frequency conversion control module, with a power of 2.2-4kW, which ensures that it has enough power to make the vortex blower rotate.
[0026] from Figure 3 As can be seen, the top of the fresh air box 1 has an exhaust box 2 secured with bolts. The exhaust box 2 is also cubic in shape. Since the exhaust box 2 is located above the fresh air box 1, the output end of the fan 5 is located at the bottom of the exhaust box 2, allowing the fan 5 to continuously supply air into the exhaust box 2. Filter layers 7 can be installed on the four sides and top of the exhaust box 2. The filter layers 7 mainly consist of a fiber mesh and an activated carbon plate. The fiber mesh effectively filters particulate matter in the air, such as dust and down, while the activated carbon plate purifies the air, making the supplied air purer. A perforated exhaust plate 3, secured with bolts, is located on one side of the filter layer 7. The perforated exhaust plate 3 not only allows purified air to be output but also effectively protects the filter layer 7 from damage caused by external impacts.
[0027] Furthermore, refer to Figure 3 and Figure 5 As shown, a conversion pipe 4 is installed on the top of the exhaust box 2 and above the filter layer 7. In actual application, the conversion pipe 4 is connected to a PVC pipe, so that the purified air can be delivered to other parts, such as the adjacent down filling room.
[0028] Based on this, in order to prevent excessive wind noise from the fresh air box 1 inside the down filling room, combined with Figure 3 and Figure 4 As shown, a silencer 6 is fixedly installed on the top of the fresh air box 1, located at the output end of the fan 5. The silencer 6 can transport the airflow output by the fan 5 to the inner cavity of the exhaust box 2. Furthermore, the filter layer 7 uses porous materials such as glass wool, foam plastic, slag wool, felt, and sound-absorbing bricks. These materials allow sound waves to enter and, through friction within the material, convert sound energy into heat energy, thus achieving the effect of sound wave absorption. Ultimately, the filter layer 7 effectively reduces wind noise, making the fresh air box 1 much quieter when used in a down-filled room.
[0029] It should be added that, in practical applications, in order to further achieve quiet operation, sound-absorbing cotton can be installed inside the fresh air box 1 to reduce the noise emitted by the fan 5 when it is working.
Claims
1. A fresh air device for a cleanroom down filling room recovery system, characterized in that, include: The fresh air box (1) is equipped with a fan (5) inside. An air intake pipe (501) is installed on the input end of the fan (5). The air intake pipe (501) can draw in the air inside the filling room. The exhaust box (2) is fastened to the top of the fresh air box (1), and the fan (5) can deliver the air drawn in by the suction pipe (501) into the exhaust box (2); The exhaust box (2) is equipped with a filter layer (7) on the side and top, which can filter and purify the air, thereby purifying the air inside the exhaust box (2).
2. The fresh air device of the cleanroom down filling room recovery system according to claim 1, characterized in that, The filter layer (7) includes a fiber mesh and an activated carbon plate.
3. The fresh air device of the cleanroom down filling room recovery system according to claim 1, characterized in that, A perforated exhaust plate (3) located on one side of the filter layer (7) is fastened to the outer side of the exhaust box (2).
4. The fresh air device of the cleanroom down filling room recovery system according to claim 3, characterized in that, A conversion pipe (4) is installed on top of the exhaust box (2) and above the filter layer (7).
5. The fresh air device of the cleanroom down filling room recovery system according to claim 4, characterized in that, A silencer (6) is fixedly installed on the top of the fresh air box (1) and at the output end of the fan (5). The silencer (6) can transport the airflow output by the fan (5) to the inner cavity of the exhaust box (2).