Ventilation pipe air filtering device in clean room

Abstract

The utility model relates to the technical field of air purification, and discloses a ventilation pipe air filtering device in a clean room. The technical problems that in the prior art, pollutants in a clean room are too many, effective filtering is difficult, the filtering efficiency is low, air circulation in a ventilation pipe is uneven, and the functions of monitoring the pollutant concentration in real time and automatically adjusting the air speed are lacked are solved. The air purifier comprises a purification module, the purification module comprises a transverse pipe, a fan is installed in the center of the transverse pipe, a plurality of air inlets are symmetrically formed in the two sides of the transverse pipe, filter screens are installed at the air inlets so as to remove large-size particulate matter to protect the fan, and the tail end of the transverse pipe is connected with an air filter. And the size of the air inlet is gradually increased from the center of the transverse pipe to the tail end of the transverse pipe. The filter has the advantages of improving the filtering efficiency, adapting to different environmental conditions, effectively utilizing the space and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to air purification technical field especially relates to a clean room ventilation pipe air filter device. BACKGROUND

[0002] The clean room refers to the space that the air cleanliness, temperature, humidity, pressure, noise and so on are controlled according to the need. The clean room must have comprehensive measures to achieve the clean level, including process layout, building plane, building structure, building decoration, personnel and material purification, air cleaning measures, maintenance management and so on. The air cleaning measure is the fundamental guarantee to realize the clean level. For air cleaning, the air supply of the clean room must be high-cleanliness air. Therefore, high-efficiency or sub-high-efficiency filter must be selected as the terminal filter to filter the air entering the clean room. The clean room ventilation pipe is an important part of the clean room. It is mainly used to exhaust the air in the clean room and introduce fresh air into the room to maintain the cleanliness of the room. In the design of the clean room, the selection and layout of the ventilation pipe are very critical, which not only relates to the work efficiency of the clean room, but also relates to the safety and health of the personnel.

[0003] The prior art Chinese patent document 201610220222.3 discloses a device of a household haze-removing oxygen-increasing fresh air system and a selection method of a ventilation pipe, which comprises a blower, an air purification box, a fresh air outlet device and a ventilation pipe. The ventilation pipe comprises an air inlet pipe and an air outlet pipe. The blower is connected with the air purification box through the air inlet pipe. The blower is also connected with the air purification box through the air outlet pipe. The air purification box is connected with the air outlet of the fresh air outlet device through the air inlet pipe of the fresh air system. The air purification box is provided with an air filter element and a PPF cotton filter element. An air conditioner outdoor unit device is arranged below the side of the air purification box.

[0004] However, the above-mentioned scheme has at least the following technical problems in the implementation process: too many pollutants in the clean room, difficult to effectively filter, and low filtering efficiency, further solving the uneven air flow in the ventilation pipe, and lacking the function of real-time monitoring of pollutant concentration and automatic adjustment of wind speed. Therefore, it is urgent to propose a clean room ventilation pipe air filter device. SUMMARY

[0005] In view of the above technical problems, the present disclosure provides a clean room ventilation pipe air filter device, which solves the technical problems of too many pollutants in the clean room, difficult to effectively filter, and low filtering efficiency in the prior art, further solves the uneven air flow in the ventilation pipe, and lacks the function of real-time monitoring of pollutant concentration and automatic adjustment of wind speed.

[0006] According to one aspect of the present disclosure, a clean room ventilation pipe air filtering device is provided, comprising a purification module, the purification module comprising a horizontal pipe, a fan being installed at the center of the horizontal pipe, a plurality of air inlets being symmetrically arranged on both sides of the horizontal pipe, a filter screen being installed at the air inlets to remove large size particles and protect the fan, and an air filter being connected to the end of the horizontal pipe.

[0007] In some embodiments of the present disclosure, the size of the air inlets gradually increases from the center of the horizontal pipe to the end of the horizontal pipe, i.e., the size of the air inlets far from the fan is larger than the size of the air inlets close to the fan.

[0008] In some embodiments of the present disclosure, the air filter comprises an initial filter, a medium filter, and a high filter connected in sequence along the air flow direction.

[0009] In some embodiments of the present disclosure, the mesh size of the filter screen of the initial filter is not greater than 10 μm, the mesh size of the filter screen of the medium filter is not greater than 1 μm, and the mesh size of the filter screen of the high filter is not greater than 0.5 μm.

[0010] In some embodiments of the present disclosure, the air filter is connected to a regulator to adjust the air pressure.

[0011] In some embodiments of the present disclosure, a plurality of detectors to detect the concentration of pollutants in the air are arranged at different positions in the clean room, and the fan is controlled by a controller to adjust the air speed of the fan.

[0012] In some embodiments of the present disclosure, the length of the horizontal pipe is at least 10 meters, and the diameter of the horizontal pipe is at least 200 mm.

[0013] In some embodiments of the present disclosure, the distance between adjacent air inlets is 0.5-2 m.

[0014] In some embodiments of the present disclosure, a pipe support is installed at the lower part of the horizontal pipe to prevent shaking during operation, and the upper surface of the pipe support is an arc surface that fits the horizontal pipe.

[0015] In some embodiments of the present disclosure, the filter screen is 20 mesh, and the wire diameter is 0.75 mm.

[0016] The present utility model has the following beneficial effects:

[0017] By reasonably designing the size of the air inlet and using a multi-stage filtration system, different sizes of particulate matter in the air can be effectively removed, providing cleaner air. High-efficiency pre-filtering measures are adopted to reduce the burden on subsequent filters, prolong the service life of the filters, and reduce maintenance frequency and cost. Through the pressure regulator and controller, stable operation can be ensured to adapt to different environmental conditions while maintaining the best state of indoor air quality. The design of the cross-pipe optimizes space utilization while ensuring sufficient air flow to meet the needs of different application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Structure diagram of air filtering device for ventilation pipe in clean room

[0019] Names of components in the figure: 1, cross-pipe; 2, fan; 3, air inlet; 4, filter screen; 5, pipe support. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not intended to limit the present application. Example 1

[0021] This example discloses an air filtering device for a ventilation pipe in a clean room, referring to Figure 1 ; including a purification module, the purification module includes a cross-pipe 1, a fan 2 is installed at the center position of the cross-pipe 1, a plurality of air inlets 3 are symmetrically arranged on both sides of the cross-pipe 1, a filter screen 4 is installed at the air inlet 3 to remove large-size particulate matter and protect the fan 2, and an air filter is connected to the end of the cross-pipe 1. The size of the air inlet 3 gradually increases from the center of the cross-pipe 1 to the end of the cross-pipe, that is, the size of the air inlet far from the fan 2 is larger than that of the air inlet close to the fan.

[0022] The air filter includes an initial efficiency filter, a medium efficiency filter, and a high efficiency filter connected in sequence along the air flow direction.

[0023] The filter screen aperture of the initial efficiency filter is not greater than 10 μm, the filter screen aperture of the medium efficiency filter is not greater than 1 μm, and the filter screen aperture of the high efficiency filter is not greater than 0.5 μm.

[0024] The air filter is connected to a regulator to adjust air pressure.

[0025] A plurality of detectors for detecting the concentration of pollutants in the air are arranged at different positions in the clean room, and the detectors are connected to the controller and the fan to adjust the fan speed of the fan 2.

[0026] The length of the cross-pipe 1 is at least 10 meters, and the diameter of the cross-pipe 1 is at least 200 mm.

[0027] The distance between adjacent air inlets 3 is 0.5-2m.

[0028] The pipe support 5 is installed at the lower part of the horizontal pipe 1 to prevent shaking during operation, and the upper surface of the pipe support 5 is an arc surface that fits the horizontal pipe.

[0029] The filter screen 4 is 20 mesh, and the wire diameter is 0.75mm.

[0030] During operation, the multiple air inlets 3 symmetrically arranged on both sides of the horizontal pipe 1 are installed with 20 mesh filter screens 4 for removing large size particulate matters and preventing impurities from entering the fan 2 and protecting it from damage. The fan 2 located at the center position of the horizontal pipe 1 is responsible for sucking the air containing pollutants in the clean room and conveying it to the air filter connected at the end through the horizontal pipe 1. Since the size of the air inlets 3 gradually increases from the center of the horizontal pipe 1 to the end, it can ensure that the air flow in the entire horizontal pipe is more uniform. After the air passes through the horizontal pipe 1, it will be further purified by passing through the primary filter, the medium efficiency filter and the high efficiency filter in turn. The filter screen aperture of the stage filter gradually decreases, which is not more than 10μm, 1μm and 0.5μm respectively, so as to gradually remove smaller particulate matters and ensure the high cleanliness of the output clean room air. The air filter is connected with an air pressure regulator for adjusting the air pressure passing through to ensure stable operation. Pollutant concentration detectors are arranged at different positions in the clean room to monitor the air quality in real time. The controller automatically adjusts the air speed of the fan 2 according to the detection result to maintain the indoor air quality at a balanced level. The length of the horizontal pipe is at least 10 meters, and the diameter is at least 200mm, to ensure sufficient air flow. The size of the air inlets 3 gradually increases from the center of the horizontal pipe 1 to the end, and the distance between adjacent air inlets is 0.5-2m, which is conducive to uniform air distribution. The pipe support 5 is installed at the lower part of the horizontal pipe 1, and the upper surface is an arc surface that fits the horizontal pipe, providing support and reducing shaking during operation. The filter screen 4 is designed with 20 mesh, and the wire diameter is 0.75mm, which is suitable for blocking larger particulate matters.

[0031] Although some preferred embodiments of the present application have been described, those skilled in the art who have the basic inventive concept can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0032] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. An air filter apparatus for a ventilation duct in a clean room, characterized by: The air purification module comprises a horizontal pipe, a fan is installed at the center of the horizontal pipe, a plurality of air inlets are symmetrically arranged on both sides of the horizontal pipe, a filter screen is installed at the air inlets to remove large-size particulate matters and protect the fan, and an air filter is connected to the end of the horizontal pipe.

2. The clean room vent duct air filtration device of claim 1, wherein: The air filter comprises, in sequence along the air flow direction, a primary filter, a medium filter and a high-efficiency filter.

3. A clean room vent duct air filtration device as claimed in claim 2, wherein: The filter screen aperture of the primary filter is not greater than 10 μm, the filter screen aperture of the medium filter is not greater than 1 μm, and the filter screen aperture of the high-efficiency filter is not greater than 0.5 μm.

4. The clean room vent line air filter apparatus of claim 1 wherein: The air filter is connected to a regulator for adjusting air pressure.

5. The clean room vent line air filter apparatus of claim 1 wherein: A plurality of detectors for detecting the concentration of pollutants in the air are arranged at different positions in the clean room, and the detectors are connected to the fan through a controller to adjust the air speed of the fan.

6. The clean room vent line air filtration device of claim 1, wherein: The length of the horizontal pipe is at least 10 meters, and the diameter of the horizontal pipe is at least 200 mm.

7. The clean room vent line air filtration device of claim 1, wherein: The distance between adjacent air inlets is 0.5-2 m.

8. The clean room vent duct air filtration device of claim 1, wherein: A pipe support is installed at the lower part of the horizontal pipe to prevent shaking during operation, and the upper surface of the pipe support is an arc surface that is fitted to the horizontal pipe.

9. The clean room vent line air filtration device of claim 1, wherein: The filter screen is 20 mesh, and the wire diameter is 0.75 mm.

Images