US4377400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Soken Inc
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Filing: 1981-11-05
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Granted: 1983-03-22
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Expires: 2001-11-05
Abstract
Abstract A heat exchanger for use in a ventilation system to exchange both of actual heat and latent heat between outgoing room air and incoming fresh air has a laminated structure formed by flat partition plates and corrugated spacer plates each sandwiched between an adjacent pair of the partition plates. The two kinds of plates are arranged such that a first series of passages for the outgoing room air and a second series of passages for the incoming fresh air are defined between respective adjacent pairs of the partition plates and the spacer plates. The first and second series of passages are at an angle with respect to each other. At least the partition plates are made of a paper-like material formed, by a process similar to ordinary paper making process, from a mixture of carbon fibers and binding fibers.
Inventors
- 👤 Kunio Okamoto
- 👤 Akira Fukami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:21
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/525; B01D46/526; B01D46/0027; B01D46/0036; B01D46/10; B01D46/42; B01D46/4263; F; F24; F24F; F24F12/00; F24F12/001; F24F12/006; Y; Y02; Y02B; Y02B30/00; Y02B30/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
A heat exchanger for use in a ventilation system having a first path of outgoing room air and a second path of incoming fresh air, said heat exchanger being adapted to be disposed at the point where said first and second paths cross each other and to perform exchange of both of actual and latent heat between said outgoing and incoming airs, said heat exchanger comprising a laminated structure formed by at least two corrugated sheets wherein the ridges of adjacent sheets cross each other and a substantially flat partition laminate sheet capable of transferring moisture, actual and latent heat sandwiched between said corrugated sheets, one of said corrugated sheets cooperating with one side layer of said partition sheet to define a first series of passages for the outgoing air, the other corrugated sheet cooperating with the other side layer of said partition sheet to define a second series of passages for the incoming air, wherein said the other side layer of said partition sheet is formed of a paper-like material including activated carbon fibers capable of adsorbing contaminants suspended by air and said one side layer of said partition sheet is formed of a paper-like material including non-activated carbon fibers incapable of adsorbing contaminants suspended by air.
Claim 2
Dependent Claim
208 words
A heat exchanger for use in a ventilation system having a first path of outgoing room air and a second path of incoming fresh air, said heat exchanger being adapted to be disposed at the point where said first and second paths cross each other and to perform exchange of both of actual and latent heat between said outgoing and incoming airs, said heat exchanger comprising a laminated structure formed by at least two corrugated sheets wherein the ridges of adjacent sheets cross each other and a substantially flat partition laminate sheet capable of transferring moisture, actual and latent heat sandwiched between said corrugated sheets, one of said corrugated sheets cooperating with one side layer of said partition sheet to define a first series of passages for the outgoing air, the other corrugated sheet cooperating with the other side layer of said partition sheet to define a second series of passages for the incoming air, wherein said the other side layer of said partition sheet is formed of a paper-like material including activated carbon fibers capable of adsorbing contaminants suspended by air and said one side layer of said partition sheet is formed of a paper-like material including non-activated carbon fibers incapable of adsorbing contaminants suspended by air.
References Cited (Backward Citations)
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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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |