Device and method for monitoring state of filter element

Non-metallic filter assembly and method of producing the same

A non-metallic filter assembly including a non-metallic canister having a closed end, an open end, and defining a hollow. A non-metallic bottom assembly is mounted on the open end of the canister and a non-metallic element assembly is disposed within the hollow of the canister. The element assembly includes a pleated media having a first end and a second end, each of which is sealed along an interior surface of each of the ends. Alternatively, each of first and second ends may be sealed by fixing the ends in a mold. The bottom assembly includes an integrally formed center tube which extends into the hollow of the canister and about which the pleated media is disposed. The closed end of the canister includes radially extending, spaced-apart ribs projecting into the hollow and supporting the second end of element assembly.

RF receptive filter adhesive

A filter manufacturing process includes the steps of dispensing an adhesive including an RF receptive material, and arranging the adhesive between an end disc and a filter media. The adhesive is exposed to RF waves excite the RF receptive material, which generates heat to cure the adhesive. The adhesive need only be exposed to the RF waves for several seconds. As a result, the filter media may be fully cured during the early processing stages. In one example, the adhesive is a vinyl adhesive plastisol. The filter media and end disc are passed through a curing tunnel in which an RF transmitter is arranged proximate to the adhesive to emit RF waves to excite the RF receptive material.

RF RECEPTIVE FILTER ADHESIVE

PROBLEM TO BE SOLVED: To provide a filter manufacturing process which enables the utilization of a non-metal end disc material while reducing costs and spaces related with a long assembly line and many openings. SOLUTION: The filter manufacturing process comprises a step of dispensing an adhesive including an RF receptive material, and a step of arranging the adhesive between the end disc and a filtering media. The adhesive is exposed to RF waves to excite the RF receptive material, which generates heat to cure the adhesive. The adhesive need only be exposed to the RF waves for several seconds. As a result, the filtering media may be fully cured during the early processing stages. In one example, the adhesive is a vinyl adhesive plastisol. The filtering media and end disc are passed through a curing tunnel in which an RF transmitter is arranged in proximity to the adhesive to emit RF waves to excite the RF receptive material. COPYRIGHT: (C)2005,JPO&NCIPI ...

DEVICE AND METHOD FOR MONITORING STATE OF FILTER ELEMENT

PROBLEM TO BE SOLVED: To provide a device for monitoring a state of a filter element. SOLUTION: A filter system 10 is a filter assembly 12 including a housing 14, the filter element 16, an inlet passage 18, and an outlet passage 20 extending in the housing; and includes a filter assembly having the outlet passage communicating with the inlet passage via the filter element, and an element state monitoring assembly, that is, the element state monitoring assembly including an inlet pressure transducer 34 communicating with the inlet passage, an outlet pressure transducer 36 communicating with the outlet passage, and a microprocessor linked with the inlet pressure transducer and the outlet pressure transducer. The inlet pressure transducer measures pressure, and the outlet pressure transducer measures pressure. The microprocessor calculates a pressure difference between inlet pressure and outlet pressure, and calculates an element state status, by using at least one element state parameter ...

RF receptive filter adhesive