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Filter-efficiency inspection system for efficient and super-efficient air filter

An air filter and filtration efficiency technology, which is applied in the direction of dispersed particle filtration, instruments, measuring devices, etc., can solve the problems of not being able to adapt to industrial production batch product testing, and not being able to meet high-efficiency air filter testing, so as to improve the technical level and improve Ergonomic effect

Inactive Publication Date: 2008-08-06
天津市海光空调净化技术咨询有限公司
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Problems solved by technology

The basic principles and technical requirements of the MPPS method are described in international norms and documents, but the specific technical parameters; design calculation methods, equipment selection and matching, etc. are classified as confidential, and there are no specific materials for reference; in addition, the obtained technical concepts It is only suitable for the experimental research system, and cannot meet the testing of multi-spec and multi-variety series products of high-efficiency air filters, nor can it meet the needs of industrial production batch product testing

Method used

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  • Filter-efficiency inspection system for efficient and super-efficient air filter
  • Filter-efficiency inspection system for efficient and super-efficient air filter
  • Filter-efficiency inspection system for efficient and super-efficient air filter

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] As shown in Figure 1, the fan room 41 is provided with an air inlet pipeline, and the air inlet pipeline is provided with an initial effect filter 1, a medium effect filter 2, and a fan 3 in sequence, and the air inlet pipeline is connected to the air supply room where a high efficiency filter 5 is installed 42. The air supply room is respectively connected to the first and second upstream test passages, and the dust generation pipes 8 and 9, flow mixing devices 11 and 12, airtight valves 14 and 15, and upstream sampling pipe 16 are arranged in sequence in the first and second upstream test passages And 17, static pressure rings 35 and 36, the first and second downstream test passages are arranged adjacent to the first and second upstream test passages, and the first and second downstream test passages are respectively arranged in sequence by sliding passages and...

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Abstract

An efficiency detecting system for the efficient and super-efficient air filter is disclosed. The primary filter, intermediate filter and blower are sequentially arranged in the air inlet pipeline in the blower room and connected to the blowing room containing efficient filter in it. Said blowing room is respectively connected to the first and the second upstream test channels, in which the dust tube, mixer, sealing valve, upstream sampling tube and static pressure ring, and the first and the second downstream test channels consisting of slide channel, perforated-plate flowmeter, downstream-sampling tube and air valve. Said both sampling tubes are respectively connected to upstream or downstream laser ion counter.

Description

technical field [0001] The invention relates to the field of detection equipment, more specifically, to a filtration efficiency detection system for high-efficiency air filters used in clean rooms in industries such as microelectronics, bioengineering, aerospace technology, and medical pharmacy. Background technique [0002] According to reports in scientific and technological literature in recent years, the sodium flame method (derived from the old British standard, now abolished) and oil mist method (derived from the former Soviet Union) HEPA detection systems currently in use in China not only have The pollution of air filter products also pollutes the laboratory environment. High-efficiency air filters polluted by sodium ions or experimental diesel oil cannot be used in modern VLSI production workshops and high-precision laboratories. In particular, the above-mentioned current domestic test methods cannot meet the needs of modern technology in terms of test accuracy. For...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/42G01N15/00G01N15/14
Inventor 涂光备王顺钢曹国庆
Owner 天津市海光空调净化技术咨询有限公司
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