← Back to Patent Explorer
US3924547A Expired / Lapsed US ⏱️ 0.0 years remaining

Electric incinerator with electrostatic filter

Assignee: Individual
•
Filing: 1974-08-19
•
Granted: 1975-12-09
•
Expires: 1994-08-19
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract An electric incinerator for burning refuse indoors or in any other suitable location, including a built-in electrostatic filter which has an ionizer assembly, in the form of a plurality of negatively charged, vertically aligned pins, and a collector cell assembly, in the form of a like plurality of positively charged tubes mounted to overlie corresponding pins. Relatively small particles of debris carried in gases emitted from the burning refuse are ionized negatively as the gases rise through the ionizer assembly, and are attracted to surfaces of the collector cell assembly, which is removable from the incinerator for cleaning purposes. The incinerator also includes a combustion chamber in which the refuse is electrically heated to ignition point, and a conventional power supply connected through a manually adjustable timer to a heating element in the combustion chamber and having a high-voltage transformer supplying power to the electrostatic filter. Deflector plates mounted above the combustion chamber provide a lengthened path for the emitted hot gases and thereby cool them prior to filtering and expulsion. A deodorizing unit is optionally employed to freshen the expelled air.

Inventors

  • 👤 Arthur W Werner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 20:52
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/017; F; F23; F23G; F23G5/00; F23G5/08; F23G5/10

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 145 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator; power supply means for applying current to said heating means and applying relatively high voltage to said electrostatic filter; and means for removably securing at least one of said first and second sets of elements of said electrostatic filter means in said housing, whereby said first and second sets of elements may be easily and quickly removed from said housing for periodic cleaning of debris build-up.
Claim 2
Dependent Claim 145 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator; power supply means for applying current to said heating means and applying relatively high voltage to said electrostatic filter; and means for removably securing at least one of said first and second sets of elements of said electrostatic filter means in said housing, whereby said first and second sets of elements may be easily and quickly removed from said housing for periodic cleaning of debris build-up.
Claim 3
Dependent Claim 121 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse, said heating means being slidably removable from said housing from a closed to an open position for depositing refuse therein for burning; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator; and power supply means for applying current to said heating means and applying relatively high voltage to said electrostatic filter.
Claim 4
Dependent Claim 121 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse, said heating means being slidably removable from said housing from a closed to an open position for depositing refuse therein for burning; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator; and power supply means for applying current to said heating means and applying relatively high voltage to said electrostatic filter.
Claim 5
Dependent Claim 36 words
An electric incinerator as defined in claim 2, wherein said heating means, in its closed position, is electrically connected to said power supply means, and electrically disconnected from said power supply means in its open position.
Claim 6
Dependent Claim 138 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator; and power supply means for applying current to said heating means and applying relatively high voltage to said electrostatic filter, said power supply means including a relatively high voltage transformer and a rectifier and voltage doubler circuit for applying a positive and a negative voltage to said first and second sets of elements of said electrostatic filter means, respectively.
Claim 7
Dependent Claim 138 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator; and power supply means for applying current to said heating means and applying relatively high voltage to said electrostatic filter, said power supply means including a relatively high voltage transformer and a rectifier and voltage doubler circuit for applying a positive and a negative voltage to said first and second sets of elements of said electrostatic filter means, respectively.
Claim 8
Dependent Claim 296 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator, said first set of elements including a plurality of electrically conductive, positively charged tubes and said second set of elements including a plurality of electrically conductive, negatively charged pins, said tubes and said pins being arranged in separate gridlike patterns, whereby each tube is suspended over and coaxially aligned to its respective pin, and said pins place a negative charge on the particles of debris, and said tubes, being positively charged, attract and collect the negatively charged particles, thereby substantially filtering the gaseous products of combustion; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse; power supply means for applying current to said heating means and applying a relatively high voltage to said electrostatic filter means, thereby applying a positive voltage to said first set of elements and a negative voltage to said second set of elements, said power supply means including a relatively high voltage transformer and a rectifier and voltage doubler circuit for applying a positive and a negative voltage to said tubes and said pins of said electrostatic filter means, respectively; and at least one deflector plate mounted in said combustion chamber and defining in part a path for the gaseous products of combustion between said combustion chamber and said vent, whereby the path is effectively lengthened without increasing the outer dimensions of said incinerator to allow for cooling of the gaseous products.
Claim 9
Dependent Claim 296 words
An electric incinerator comprising: a thermally insulated housing having a vent to allow for expulsion of air from said incinerator; electrostatic filter means having at least a first set of elements and a second set of elements for filtering relatively small particles of debris in gaseous products from refuse burned in said incinerator, said first set of elements including a plurality of electrically conductive, positively charged tubes and said second set of elements including a plurality of electrically conductive, negatively charged pins, said tubes and said pins being arranged in separate gridlike patterns, whereby each tube is suspended over and coaxially aligned to its respective pin, and said pins place a negative charge on the particles of debris, and said tubes, being positively charged, attract and collect the negatively charged particles, thereby substantially filtering the gaseous products of combustion; a combustion chamber within said housing, for receiving refuse material to be burned within said incinerator; heating means within said combustion chamber for igniting the refuse; power supply means for applying current to said heating means and applying a relatively high voltage to said electrostatic filter means, thereby applying a positive voltage to said first set of elements and a negative voltage to said second set of elements, said power supply means including a relatively high voltage transformer and a rectifier and voltage doubler circuit for applying a positive and a negative voltage to said tubes and said pins of said electrostatic filter means, respectively; and at least one deflector plate mounted in said combustion chamber and defining in part a path for the gaseous products of combustion between said combustion chamber and said vent, whereby the path is effectively lengthened without increasing the outer dimensions of said incinerator to allow for cooling of the gaseous products.
Claim 10
Dependent Claim 38 words
An electric incinerator as defined in claim 5, wherein said first set of elements of said electrostatic filter means includes, in addition to said plurality of tubes, an electrically conductive plate, said tubes being mounted to said plate.
Claim 11
Dependent Claim 42 words
An electric incinerator as defined in claim 6, wherein said second set of elements of said electrostatic filter means includes, in addition to said pins, a non-conductive perforated board, said pins being electrically connected to each other and mounted to said board.
Claim 12
Dependent Claim 56 words
An electric incinerator as defined in claim 7, further including means for removably securing at least one of said first and second sets of elements of said electrostatic filter means to said housing, whereby said first and second sets of elements may be easily and quickly removed from said housing for periodic cleaning of debris build-up.
Claim 13
Dependent Claim 34 words
An electric incinerator as defined in claim 8, including adjustable timing means connected to said power supply means to apply power to said heating means and said electrostatic filter means for a preselected time.
Claim 14
Dependent Claim 31 words
An electric incinerator as defined in claim 9, wherein said heating means is slidably removable from said housing from a closed to an open position for depositing refuse therein for burning.
Claim 15
Dependent Claim 36 words
An electric incinerator as defined in claim 10, wherein said heating means, in its closed position, is electrically connected to said power supply means, and electrically disconnected from said power supply means in its open position.
Claim 16
Dependent Claim 23 words
An electric incinerator as defined in claim 11, further including deodorizer means mounted adjacent said vent to freshen air expelled from said housing.

References Cited (Backward Citations)

US3353508A Cited
US3495379A Cited
US3656440A Cited
US3742874A Cited
US3839185A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-08 1979-06-09 1979-12-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-08 1983-06-09 1983-12-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-08 1987-06-09 1987-12-09 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag