Patent US3683591A successfully refreshed from Google Patents.
US3683591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of drying air and apparatus intended therefor
Assignee: Individual
•
Filing: 1970-07-06
•
Granted: 1972-08-15
•
Expires: 1990-07-06
Abstract
Abstract In a process of conditioning air in a multi-channel system comprising a first group of channels passed by a cooling agent and a second group of channels disposed alternately therebetween and passed by the air to be conditioned and having its walls coated with a sorbing agent, the cooling agent removing the heat set free by absorption of moisture from the air to be conditioned by heat convection through the walls between the groups of channels, the cooling is to an essential degree effected by evaporation of water into the cooling agent passing through the channels of the first group of channels. Preferably, the process includes also a particular mode of regeneration of the sorbing agent by a heating fluid supplied intermittently to the channels of the first group and accumulated by the walls of said channels covered with a wettable or water absorbent material. The apparatus for carrying out a process of air conditioning according to the invention comprises an exchanger body housed in a casing and formed with two groups of channels, the channels of one group being positioning alternating with the channels of the second group, the channels of the first group being adapted to be passed by a cooling agent admitted through an inlet and discharged through an outlet in the casing, and the channels of the second group being adapted to be passed by the air to be conditioned admitted through an inlet and discharged through an outlet in the casing. The walls of the channels to be passed by the air to be conditioned are provided with a coating of a hygroscopic substance acting as a sorbing agent, whereas the walls of the channels for the cooling agent by a coating of a sorbing agent are made adapted to be wetted taking up water which is evaporated into the cooling agent when it passes through said channels. Preferably, all or part of the water is supplied intermittently as a heating agent for regeneration of the sorbing agent.
Inventors
- 👤 Ola Glav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:30
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; B; B01; B01D; B01D53/00; B01D53/26; B01D53/261; F28; F28D; F28D5/00; F24F2003/1458
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
64 words
The method as defined in claim 1 wherein only isolated portions of said opposite surface are progressively wet with a member of the group consisting of hot water and the steam supplied under heat exchange conditions to condense at least a portion sufficient to wet said surface portion, heating an opposite isolated portion of said first surface coated with desiccant to regenerate said desiccant.
Claim 2
Dependent Claim
33 words
The method of claim 2 wherein the isolated portions of said surface being treated have the evolved water and moisture disposed of simultaneously and independently of the said evaporative and conditioning air streams.
Claim 3
Dependent Claim
110 words
Process of drying air as defined in claim 1 wherein said desiccant coated surface is arranged in a first group of channels through which the air to be conditioned is passed, the interior surfaces of said channel corresponding to said desiccant coated surface and said opposite porous side of said desiccant coated surface being divided into a second group of channels alternately arranged in heat conductive contact with respect to said first group of channels, said other air stream being passed over the water-wet surfaces of the opposite porous surfaced channels to effect cooling of the desiccant and air simultaneously being dried in passage through said first group of channels.
Claim 4
Dependent Claim
99 words
The method as defined in claim 4 wherein the desiccant on the surfaces in heat conductive contact of the channels is regenerated in a series, one channel at a time, by wetting and heating an opposite surface with a member of the group consisting of hot water and steam, the steam being under heat exchange conditions to condense at least a portion, thereby heating both opposite surface portions to regenerate said desiccant coating, and then cooling the said wetted opposite surface of a channel member for subsequent evaporative cooling by passage of said other air stream through said channels.
Claim 5
Dependent Claim
21 words
The process as claimed in claim 5 wherein the water is supplied to the first group of channels in liquid state.
Claim 6
Dependent Claim
23 words
The process as claimed in claim 5 wherein in that the water is supplied to the first group of channels in vapor state.
Claim 7
Dependent Claim
51 words
The process as claimed in claim 5 wherein the supply of heating fluid is effected in succession to the individual channels for the cooling agent, the supply of evaporative air at the same time being interrupted to at least that of the channels which at any definite moment receive heating fluid.
Claim 8
Dependent Claim
33 words
The method as claimed in claim 8 wherein the supply of heat is also interrupted to at least the channel for the cooling agent situated nearest outside adjacent said channel receiving heating fluid.
Claim 9
Dependent Claim
44 words
The process as claimed in claim 8, wherein the air to be conditioned passing through a channel in the said second group adjacent a channel in the first-mentioned group which at the definite moment is supplied with heating fluid, is withdrawn to an outlet.
Claim 10
Dependent Claim
37 words
The process as claimed in claim 10, wherein a channel for the air to be conditioned which is adjacent a channel for the cooling air, recently passed by heating fluid and still warm, is wholly sealed off.
Claim 11
Dependent Claim
50 words
The process as claimed in claim 5, wherein water is caused in a closed circuit to pass through a heating device, at least one channel for the cooling agent in a regeneration zone movable above the exchanger body, and a collecting trough located at the lower portion of said body.
Claim 12
Independent Claim
142 words
An apparatus for drying air in a multi-channel system comprising an exchanger body having heat conductive impermeable partition walls subdividing said body into two groups of channels, every second channel being connect to at least one inlet and at least one outlet for air to be conditioned and every second intermediate channel being connected to at least one inlet and at least one outlet for a cooling agent, the channels for the air to be conditioned having a coating of a desiccant agent, the opposite channel walls having surfaces only sufficiently porous to retain water thereon, means for wetting said channel surfaces with water and means for passing an air stream through said water-wet channels to cool said water-wet walls by evaporation of the water together with the desiccant by heat exchange coated upon the opposite wall surfaces of the alternate channels.
Claim 13
Dependent Claim
21 words
The apparatus as claimed in claim 13, wherein the source of water is adapted to deliver the water in liquid state.
Claim 14
Dependent Claim
21 words
The apparatus as claimed in claim 13, wherein the source of water is adapted to deliver the water in vapor state.
Claim 15
Dependent Claim
35 words
The apparatus as claimed in claim 13, wherein the channels in the exchanger body for the cooling agent are disposed to cooperate with members for intermittent supply of water to the individual cooling agent channels.
Claim 16
Dependent Claim
33 words
The apparatus as claimed in claim 16, wherein said members include a spraying device surrounded by a hood and disposed over one side of the exchanger body and located displaceably along said side.
Claim 17
Dependent Claim
28 words
The apparatus as claimed in claim 17, wherein the spraying devise with the surrounding hood is disposed over and displaceable along the upper side of the exchanger body.
Claim 18
Dependent Claim
52 words
The apparatus as claimed in claim 17, wherein in a conduit leading to the spraying device is provided a heater element by means of which the heating agent is heated to be utilized thereupon for indirect heating of the sorbing agent in the outer group of channels and regeneration of said agent.
Claim 19
Dependent Claim
65 words
The apparatus as claimed in claim 17, wherein in addition to the hood a screen is provided in the path of the air to be conditioned in the passage leading from said second group of channels in the exchanger body, said screen being movable synchronously with the hood and the spraying device and adapted to deflect air moistened during the regeneration to a separate outlet.
Claim 20
Dependent Claim
45 words
The apparatus as claimed in claim 20, wherein the screen has such shape that it completely seals off the passage through those channels for the air to be conditioned which are located adjacent that those channels from which regeneration air is withdrawn to said outlet.
Claim 21
Dependent Claim
43 words
The apparatus as claimed in claim 17, wherein the hood is shaped to completely seal off adjacent channels for cooling agent which are adjacent immediately those channels for air to be conditioned which at their opposite side are heated by the heating fluid.
Claim 22
Dependent Claim
30 words
The apparatus as claimed in claim 13, wherein the partition walls of the exchanger body are formed with a lining substantially impermeable to water in liquid state or steam state.
Claim 23
Dependent Claim
30 words
The apparatus as claimed in claim 23, wherein both sides of said lining are porous layers serving as carried for the desiccant agent or as accumulators for the supplied water.
Claim 24
Dependent Claim
38 words
The apparatus as claimed in claim 19, wherein a trough is mounted below the exchanger body for collecting excess water which is returned by a pump to the heating element and the upper side of the exchanger body.
References Cited (Backward Citations)
US2687783A
Cited
US2993563A
Cited
US3251402A
Cited
US3446031A
Cited
US3528224A
Cited
US3498026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |