US4673416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaning apparatus
Assignee: Denso Corp
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Filing: 1986-06-12
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Granted: 1987-06-16
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Expires: 2006-06-12
Abstract
Abstract An air cleaning apparatus having an electrical dust collecting section has discharge electrodes, electrical field forming electrodes arranged parallel to the flow of charged particles, and dust collecting electrodes each of which is arranged between corresponding two adjacent electrical field forming electrodes to be parallel thereto. One high voltage power source is arranged to generate a potential difference between the discharge electrodes and the dust collecting electrodes. Another high voltage power source is arranged to generate a potential difference between the electrical field forming electrodes and the dust collecting electrodes. Negative electrodes consisting of either the electrical field forming electrodes or the dust collecting electrodes are covered by insulator members.
Inventors
- 👤 Nobuyoshi Sakakibara
- 👤 Tadashi Hattori
- 👤 Kazuhiko Miura
- 👤 Hiroki Noguchi
- 👤 Akira Fukami
- 👤 Teiichi Nabeta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/12; B03C3/34; B03C3/40; B03C3/60; B03C3/66
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
216 words
An ion wind air cleaning apparatus comprising: a housing having an air suction opening and an air exhaust opening to create a wind therethrough; a plurality of electrical discharge electrodes arranged in said housing adjacent said suction opening; a plurality of electrical field forming electrodes arranged in said housing downwind of and spaced from said electrical discharge electrodes to form a discharge gap therebetween, said electrical field forming electrodes being arranged in parallel with the flow of charged particles; a plurality of dust collecting electrodes arranged between and in parallel with said electrical field forming electrodes; high voltage means for establishing a potential difference between said electrical discharge electrodes and said dust collecting electrodes to create an ion wind and for establishing a potential difference between said electrical field forming electrodes and said dust collecting electrodes; a terminal of one polarity of said high voltage means being connected with said electrical discharge electrodes and said field forming electrodes; the terminal of the other polarity of said high voltage means being connected with said dust collecting electrodes, either of said field forming electrodes or said dust collecting electrodes being negatively charged; and an insulator member covering the entire surface either of said dust collecting electrodes and said field forming electrodes of which the polarity connection is negative.
Claim 2
Dependent Claim
216 words
An ion wind air cleaning apparatus comprising: a housing having an air suction opening and an air exhaust opening to create a wind therethrough; a plurality of electrical discharge electrodes arranged in said housing adjacent said suction opening; a plurality of electrical field forming electrodes arranged in said housing downwind of and spaced from said electrical discharge electrodes to form a discharge gap therebetween, said electrical field forming electrodes being arranged in parallel with the flow of charged particles; a plurality of dust collecting electrodes arranged between and in parallel with said electrical field forming electrodes; high voltage means for establishing a potential difference between said electrical discharge electrodes and said dust collecting electrodes to create an ion wind and for establishing a potential difference between said electrical field forming electrodes and said dust collecting electrodes; a terminal of one polarity of said high voltage means being connected with said electrical discharge electrodes and said field forming electrodes; the terminal of the other polarity of said high voltage means being connected with said dust collecting electrodes, either of said field forming electrodes or said dust collecting electrodes being negatively charged; and an insulator member covering the entire surface either of said dust collecting electrodes and said field forming electrodes of which the polarity connection is negative.
Claim 3
Dependent Claim
24 words
The apparatus defined in claim 1 wherein the terminal of one polarity is negative and the insulator member covers the electrical field forming electrodes.
Claim 4
Dependent Claim
23 words
The apparatus defined in claim 1 wherein the terminal of one polarity is positive and the insulator member covers the dust collecting electrodes.
Claim 5
Dependent Claim
56 words
An apparatus according to claim 1, wherein said insulator member is provided to satisfy the relationship: ##EQU1## where V is the voltage applied by the high voltage means to establish the potential difference between the field forming electrodes and the dust collecting electrodes and V 1 is the potential of the surface of said insulator member.
References Cited (Backward Citations)
US2978066A
Cited
GB1022859A
Cited
US3650092A
Cited
DE2719035A1
Cited
US4264343A
Cited
GB2112582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |