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Scanning equipment for filter leak detection

A scanning device, filter technology, applied in the direction of detecting the presence of fluid at the leak point, membrane filter, dispersed particle filtration, etc., can solve problems such as damage, clamping mechanism not properly closed, leakage of dangerous substances, etc. Easy to replace and install, durable and cost-effective, the effect of increased tolerance

Active Publication Date: 2021-03-12
CAMFIL VENTURES AB
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A potential problem with clamping mechanisms of the type described above and others is that any errors made during the replacement of filters in the air ventilation system (for example, if the filter is not positioned correctly, the gasket is not fully functional, the clamping mechanism is not properly closed, etc.) may result in leakage of hazardous substances into the surrounding environment
Also, with some types of HEPA filters, the filter surface is very fragile and may even be damaged by light touch

Method used

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  • Scanning equipment for filter leak detection
  • Scanning equipment for filter leak detection
  • Scanning equipment for filter leak detection

Examples

Experimental program
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Embodiment Construction

[0033] Description of the implementation

[0034] now refer to Figure 1a and Figure 1b , the filter assembly 100 for an air filter unit includes a filter housing 110 adapted to be installed in an air ventilation system. The filter housing 110 includes a cabinet 111 having an upstream air inlet 115, a downstream air outlet 113, opposing side walls 117, 118, and opposing top and bottom walls 119 and 120, the upstream air inlet 115 being framed by the air inlet. 116, the downstream air outlet 113 is bounded by the air outlet frame 114 (see Figure 1b ) and located at the air inlet 115, the opposite side walls 117, 118 have Figure 1b Oriented spatially as shown in and may be referred to as first side wall 117 and second side wall 118 , opposing top wall 119 and bottom wall 120 extend between and are attached to air inlet frame 116 and air outlet frame 114 . The door 112 is arranged at the first side wall 117 . When the door 112 is closed, the door 112 seals against the firs...

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PUM

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Abstract

A scanning device (130) for filter leak detection is provided, the scanning device comprising at least one scanning device (131a, 131b) arranged for scanning a respective filter (122a, 122b). Each scanning device comprises a scanning probe (132a, 132b) and a moving mechanism (133a, 133b), the scanning probe (132a, 132b) covers the full width of the corresponding filter surface of the scanning device, and the moving mechanism (133a, 133b) can respectively Operate to displace the scanning probe over the filter in a direction perpendicular to the scanning probe. The scanning device comprises an elongated rotatable actuator (134) arranged to extend parallel to the scanning probe. Each movement mechanism is coupled to an actuator. Thus, a scan in a controlled manner is provided which scans several adjacently arranged filters from a side-access position, in particular filters in a side-access cabinet of more than one filter depth.

Description

[0001] field of invention [0002] The invention relates to a scanning device and a moving mechanism for filter leak detection. [0003] Background of the invention [0004] In air ventilation systems requiring high efficiency filters such as High Efficiency Particulate Air (HEPA) filters or other high efficiency filters, it is known to use a filter housing in which the filter unit is secured and effectively mechanically Clamp to seal the respective filter unit within the filter housing. When utilizing such a mechanical clamping mechanism to seal a high efficiency filter, it is necessary to ensure that any bypass or leakage around the seal is less than the maximum penetration of the filter. It is also necessary to ensure that the entire filter surface is free of any pinholes or other defects. This technique is described eg in section B.6 of ISO 14644-3. Similar and more stringent tests are also specified in national standards, such as the Chinese standard for biosafety exhau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/02G01N15/08
CPCG01M3/02G01N15/08G01N2015/084B01D46/0086B01D46/442B01D2273/18G01M3/20
Inventor 汉普斯·伊萨克松
Owner CAMFIL VENTURES AB
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