Apparatus and method for conducting PAO test on air return efficient filter of aseptic isolator

A high-efficiency filter and isolator technology, applied in the application of light to test fluid tightness, using liquid/vacuum for liquid tightness measurement, etc., can solve the increased risk of high-efficiency filter leakage, PAO scanning, and leakage Problems such as being accurately detected, to achieve the effect of simple structure, ensuring safety, and strong practicability

Inactive Publication Date: 2016-09-28
SHINVA MEDICAL INSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, most of the laminar flow aseptic isolator return air high-efficiency filters on the market are connected by air cylinders. The front and rear ends of the high-efficiency filter are connected to a pressure difference gauge. Leakage, although this method is simple and intuitive, but the error is relatively large. Due to the limitation of the accuracy of the differential pressure gauge, small leaks cannot be accurately measured, which increases the risk of high-efficiency filter leakage
In addition, the high-efficiency filter is connected in the air cylinder type, and there is no space for PAO scanning on the air outlet surface of the filter, so the leak detection of the high-efficiency filter cannot be performed by PAO scanning.
Its structural principle is as Image 6 As shown, the return air high-efficiency filter is provided with differential pressure gauges 21 on the air inlet surface and the air outlet surface respectively, and the return air high efficiency filter is judged by the change of pressure difference to determine whether the return air high efficiency filter is leaking, and the air outlet surface of the return air high efficiency filter is airtight Inside the exhaust duct 22, so PAO scanning is not possible

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  • Apparatus and method for conducting PAO test on air return efficient filter of aseptic isolator
  • Apparatus and method for conducting PAO test on air return efficient filter of aseptic isolator
  • Apparatus and method for conducting PAO test on air return efficient filter of aseptic isolator

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Embodiment Construction

[0030] Embodiments of the present invention are further described below in conjunction with accompanying drawings:

[0031] Such as Figure 1-3 As shown, the device suitable for the PAO test of the sterile isolator return air high-efficiency filter according to the present invention includes the isolator operation cabin 1 and the return air box 3 which are sealed and connected, and the lower part of the isolator operation cabin 1 and the return air box 3 passes through a rectangular The vents 9 of the structure are connected, and the return air high efficiency filter fixing frame 2 is arranged in the return air box 3, and the return air high efficiency filter fixing frame 2 is welded with the inner wall of the return air box 3, corresponding to the middle of the return air high efficiency filter The opening fixes the return air high efficiency filter 6 on the return air high efficiency filter fixing frame 2, and the air inlet surface of the corresponding return air high effici...

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Abstract

The invention relates to a device and method suitable for the PAO test of the return air high-efficiency filter of the aseptic isolator, which belongs to the technical field of PAO testing, and comprises an isolator operation cabin and a return air box which are sealed and connected, and the lower part of the isolator operation cabin and the return air box passes through The vents are connected, and the return air high-efficiency filter fixing frame is installed in the return air box, and the return air high-efficiency filter is fixed on the return air high-efficiency filter fixing frame. The PAO concentration detection connection and the PAO smoke connection are sealed and connected to the fixed frame of the device. The high-efficiency filter scanning port is set on the return air box corresponding to the air outlet surface of the return air high-efficiency filter, and the return air box cover is set at the high-efficiency filter scanning port. The present invention can accurately judge whether the return air high-efficiency filter leaks, effectively avoids the safety risk caused by the return air high-efficiency filter leakage, can ensure the safety of the aseptic isolator during normal operation, and contributes to Improve the production quality of sterile drugs.

Description

technical field [0001] The invention relates to a device and method suitable for PAO testing of return air high-efficiency filters of aseptic isolators, belonging to the technical field of PAO testing, and applicable to air purification systems of various laminar flow aseptic isolators. Background technique [0002] At present, most of the laminar flow aseptic isolator return air high-efficiency filters on the market are connected by air cylinders. The front and rear ends of the high-efficiency filter are connected to a pressure difference gauge. Leakage, although this method is simple and intuitive, it has large errors. Due to the limitation of the accuracy of the differential pressure gauge, small leaks cannot be accurately measured, which increases the risk of high-efficiency filter leakage. In addition, the high-efficiency filter is connected in the air cylinder type, and there is no space for PAO scanning on the air outlet surface of the filter, so the leak detection of...

Claims

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Application Information

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IPC IPC(8): G01M3/02G01M3/38
CPCG01M3/02G01M3/38
Inventor李明赵嘉毛明亮
OwnerSHINVA MEDICAL INSTR CO LTD