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Filter installment monitor

A filter element and sensor technology, applied in the field of filter installation monitoring, can solve problems such as difficult to check, results can no longer be used, and seal failure cannot be detected

Inactive Publication Date: 2007-11-21
MILLIPORE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because these seats are tight and require considerable pressure to seal properly, sometimes the O-ring appears properly seated when it may not, and in other cases, can be difficult to see to the full circumference of the ring
Thus, while visual inspection is useful, not all seal failures can be detected
Thus, there are also instances where an integrity failure occurs whereby the filtered results are no longer usable

Method used

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  • Filter installment monitor
  • Filter installment monitor

Examples

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Embodiment Construction

[0007] Figure 1 illustrates a representative filtration system in accordance with the present invention. The filter element 10 is enclosed within a housing 20 . The filter element may simply be a porous material such as pleated paper. Alternatively, the filter element may comprise a frame and porous material such as plastic. The filter element is in contact with the housing 20 . This contact forms a seal and is preferably airtight and watertight. In some embodiments, a gasket 30 such as an O-ring is used to provide this seal. In order for the seal to meet these requirements, the gasket must be properly installed. As previously mentioned, this is traditionally verified via visual inspection. This technique may be flawed and therefore may not identify all improperly installed gaskets. Thus, time and material are wasted due to integrity failures caused by improperly installed gaskets. Therefore, improvements that increase the likelihood for detecting seal failures would be...

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PUM

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Abstract

The present invention discloses a method and apparatus for monitoring the integrity of seals, especially those in filtering elements. In one embodiment, an electrically conductive material is used as the sealing material. The resistance of this material is monitored, since it is known that electrical resistance is a function of the compression or strain on the material. In a second embodiment, one or more switches are installed in or on the end cap of the filtering element. These switches engage when the filtering element is properly seated This information can then be conveyed to the operator, such as via wireless communication.

Description

Background of the invention [0001] In many applications it is necessary to mount one device on top of or within another device. In many of these applications, the device is required to form a hermetic or watertight seal. Examples of these types of applications include the interface between an automotive oil filter and the engine, the interface between a liquid container and its cover, and the like. Traditionally, it has been common practice to use a compressible material interposed between these devices to provide this seal. This compressible material can take many forms such as, but not limited to, a gasket or an O-ring. [0002] One such application where a compressible material is used to form a seal is found in the field of pharmaceutical filtration. In this application, typically one or more filter elements are located within the housing and the liquid is passed through the filter elements in order to remove certain unwanted particulates. Since filtration operations a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D35/14
CPCB01D2201/34B01D35/14F16J15/3296F16J15/064B01D46/44B01D46/429
Inventor A·迪莱奥
Owner MILLIPORE CORP