US3773105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for a regenerative heat exchanger
Assignee: Denso Corp
•
Filing: 1971-12-06
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Granted: 1973-11-20
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Expires: 1991-12-06
Abstract
Abstract Sealing means for a heat exchanger having a rotary matrix type regenerator which is disposed across conduit means for high temperature fluid and a second conduit means for low temperature fluid, said sealing means including a pair of parallel annular flexible plates which are connected together at their outer peripheries through a ring member, one of said flexible plate being connected with an opening of one conduit means, the other of said conduit means having a sealing member at its inner periphery, said sealing member being forced in sealing contact with the regenerator by the pressure difference between the inside and outside of the conduit means.
Inventors
- 👤 Y Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:38
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/047; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/02; Y10S165/021
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
235 words
A seal for a regenerative heat exchanger having a rotary matrix regenerator in which heat is exchanged between two gases passing through said regenerator and having different temperatures and different pressures, first conduit means for conveying high pressure gas, and a second conduit means for conveying a low pressure gas, said seal effecting a seal between said first conduit means and said rotary matrix regenerator with the aid of the pressure of the gas passing through said first conduit means, and comprising: A. a pair of annular flat flexible plates disposed parallel with each other with a space therebetween; B. a sealing member slidably contacting the surface of said regenerator for providing a sealing contact therewith, means for securing the outer surface of one of said flexible plates at its inner periphery to said sealing member and means for securing the other of said flexible plates at its inner periphery to the opening of said first conduit means faced to said regenerator; C. an annular rigid holding ring of rectangular cross-section connected between said pair of flexible plates, and resistance welding means for securing said holding ring to the inner surface of the outer periphery of each of said pair of flexible plates; and D. a pair of reinforcing plates secured to the outer surface of the outer periphery of each of said pair of flexible plates so as to resist the forces acting thereon.
Claim 2
Dependent Claim
235 words
A seal for a regenerative heat exchanger having a rotary matrix regenerator in which heat is exchanged between two gases passing through said regenerator and having different temperatures and different pressures, first conduit means for conveying high pressure gas, and a second conduit means for conveying a low pressure gas, said seal effecting a seal between said first conduit means and said rotary matrix regenerator with the aid of the pressure of the gas passing through said first conduit means, and comprising: A. a pair of annular flat flexible plates disposed parallel with each other with a space therebetween; B. a sealing member slidably contacting the surface of said regenerator for providing a sealing contact therewith, means for securing the outer surface of one of said flexible plates at its inner periphery to said sealing member and means for securing the other of said flexible plates at its inner periphery to the opening of said first conduit means faced to said regenerator; C. an annular rigid holding ring of rectangular cross-section connected between said pair of flexible plates, and resistance welding means for securing said holding ring to the inner surface of the outer periphery of each of said pair of flexible plates; and D. a pair of reinforcing plates secured to the outer surface of the outer periphery of each of said pair of flexible plates so as to resist the forces acting thereon.
Claim 3
Dependent Claim
207 words
A seal as claimed in claim 1, which further effects sealing between said second conduit means and said rotary matrix regenerator with the aid of the pressure of the gas passing through said second conduit means, further comprising: A. a second pair of annular flat flexible plates arranged in parallel with each other with a space therebetween; B. a second sealing member slidably contacting the surface of said regenerator for providing a sealing contact therewith, means for securing the outer surface of one of said second pair of flexible plates at its inner periphery to said second sealing member and means for securing the other of said second pair of flexible plates at its inner periphery to the opening of said second conduit means faced to said regenerator; C. a second annular rigid holding ring of rectangular cross-section connected between said second pair of flexible plates, and resistance welding means for securing said second holding ring to the inner surface of the outer periphery of each of said second pair of flexible plates; and D. a second paiR of reinforcing plates secured to the outer surface of the outer periphery of each of said second pair of flexible plates so as to resist the forces acting thereon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |