US2336456A - Dehumidifying apparatus - Google Patents

Dehumidifying apparatus Download PDF

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Publication number
US2336456A
US2336456A US399793A US39979341A US2336456A US 2336456 A US2336456 A US 2336456A US 399793 A US399793 A US 399793A US 39979341 A US39979341 A US 39979341A US 2336456 A US2336456 A US 2336456A
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United States
Prior art keywords
tube
dehumidifying
gas
air
heated
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Expired - Lifetime
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US399793A
Inventor
Frederick O Anderegg
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John B Pierce Foundation
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John B Pierce Foundation
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Priority to US399793A priority Critical patent/US2336456A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/13—Insulation

Definitions

  • This invention relates to dehumidifying means whereby air or other gasesiare relieved of moisture content.
  • a primary object of the invention is the provision for rapid, and substantially complete, continuous dehumidification in a simple and inexpensive manner.
  • Another object is the provision for continuous regeneration of the material used as a dehumidifying agent.
  • An outstanding novel feature in the accomplishment of the above recited objects resides in the use of highly pervious, dehumidifying material as a wall between a flow of air, or other gas to be dehumidified, and a flow of heated air, or other gas acting as a regenerative medium.
  • the two flows, in contact with opposite faces of the dehumidifying wall, are preferably in counter directions to enhance th respective actions thereof.
  • cooling means such as a coil through which water circulates, for absorbing the latent heat of vaporization set free by condensation of the moisturein the air or other gas being dehumidified.
  • Fig. 1 represents a vertical section taken centrally through a preferred embodiment of the invention, the midportion being illustrated'partly in elevation;
  • Fig. 2 represents a horizontal section taken on the line 2-2 of Fig. 1.
  • Dehumidification pursuant to the invention is IU of highly porous dehumidifying material is set into a cylindrical housing II, which may be conveniently formed from sheet metal.
  • the tube I 0 extends longitudinally through the housing I I, passing through aligned receiving apertures preferably formed centrally of opposite end plates l2 and i3 of the housing.
  • Flange collars In and Ba may be struck from the respective end plates, circumferentially of the respective receiving apertures, for anchoring the tube ID in position.
  • the housing ll forms a chamber i4 completely surrounding the greater portion of the length of the tube l0. Through this chamber the air or other gas to be dehumidified is passed.
  • a supply conduit l5 leads into the top of the housing il through a suitable receiving aperture provided in the upper end plate l2 to one side of the aperture through which the tube I 0 extends.
  • the supply conduit I5 is connected to the source of the air or other gas to be dehumidified (not shown), and, if found desirable in any particular instance, a conventional type of blower may be utilized to induce a positive flow through such supply conduit toward the chamber I 4.
  • a discharge conduit l6 leads from the bottom of the housing It through a suitable receiving aperture provided in the lower end plate i3, preferably at a side of the housing II which is oppoof highly pervious dehumidifying material so that a maximum effective dehumidifying surface area is had.
  • the dehumidifying material employed be that disclosed and claimed in my co-pending application Serial No. 157,136-fi1ed August 3, 1937, and entitled Dehumidifying material, now U. S. Patent No. 2,255,041.
  • Such material may be molded int desired shape in its formative stage. It is extremely porous throughout, andthe individual pores thereof intercom- -municate so that distribution of absorbed moisture, and passage thereof through the body of the material, is facilitated. Further, the body of the material is rendered chemically hygroscopic by reason of a calcium chlorine constituent.
  • dehumidifying material is particularly advantageous because of its peculiar characteristics, other pervious materials may be successfully used.
  • Heated, relatively dry air or other gas is passed upwardly through the tube iii.
  • a gas burner I! may be disposed at the lower end of the tube It) so that air heated thereby will pass upwardly through the hollow interior of tube H), as lna chimney.
  • the heated, relatively dry air or other gas- may be supplied in any other suitable manner, however, as for instance by connecting a conduit, leading from any suitable source of the heated, relatively dry air or othergas, to the bottom end of the tube In.
  • the spent heated air or other gas may pass-freely out of the top of the tube i0 after traversing the length thereof, or, if desired, discharge piping (not shown) may be connected to the upper end of the tube l0.
  • Air or other gas to be dehuinidified is supplied to the interior of the casing ll through the supply conduit l5, and is withdrawn therefrom through discharge conduit l6.
  • such air or other gas to be dehumidified passes over the outside wall surface of the dehumidifying tube i0, in intimate contact therewith, and gives up its moisture content to that wall surface.
  • the heated air or other gas flows upwardly within the tube l0, passing over the inside wall surface of the dehumidifying tube l0, and by reason of its dry character, vaporizes and carries off moisture from such inside wall surface. Because the entire body of the wall of tube: is pervious to moisture, the flow of heated air or other gas continuously and eifectively regenerates the dehumidifying outer surface of the wall of tube [0.
  • Means for absorbing the latent heat of vaporization released adjacent the dehumidifying outer walls of the tube I0 may be provided in the form of a coiled pipe 18, advantageously of copper, and forming a component part of a circulation system of any desired type (not shown) whereby water, or other cooling fluid, is circulated continuously through the piping.
  • Dehumidifying apparatus comprising a relatively long pervious tube of dehumidifying material; means forming an enclosed chamber about substantially the length of said-tube; an inlet and an outlet for passing air, or other gas to be dehumidifled, through said chamber and in intimate contact with the outside face of said tube, an inlet, an outlet, and a source of heated gas in communication with said inlet for passing relatively dry heated gas through said tube in intimate contact with the inside face of said tube; and a cooling element disposed about the outer wall of said tube in heat exchange relationship therewith.
  • Dehumidifying means comprising a chamber having an inlet and an outlet; an open-ended tube of pervious water absorbtive material disposed within said chamber; an inlet and an outlet for passing air or other gas to be dehumidified through said chamber in intimate contact with the outer surface of said tube over substantially

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Gases (AREA)

Description

Dec. 14, 1943. F. o ANDEREGG DEHUMIDIFYING APPARATUS Filed June 26, 1941 \NVENTOR Patented Dec. 14, 1943 nnnommrrme APPARATUS Frederick 0. Anderegg, Newark, Ohio, assignor to John B. Pierce Foundation, New York, N. Y., a corporation of New York Application June 26, 1941, Serial N... 399,793
3 Claims.
This invention relates to dehumidifying means whereby air or other gasesiare relieved of moisture content. e
A primary object of the invention is the provision for rapid, and substantially complete, continuous dehumidification in a simple and inexpensive manner.
Another object is the provision for continuous regeneration of the material used as a dehumidifying agent.
An outstanding novel feature in the accomplishment of the above recited objects, resides in the use of highly pervious, dehumidifying material as a wall between a flow of air, or other gas to be dehumidified, and a flow of heated air, or other gas acting as a regenerative medium. The two flows, in contact with opposite faces of the dehumidifying wall, are preferably in counter directions to enhance th respective actions thereof.
Another feature resides in the provision of cooling means, such as a coil through which water circulates, for absorbing the latent heat of vaporization set free by condensation of the moisturein the air or other gas being dehumidified.
In the drawing: Fig. 1 represents a vertical section taken centrally through a preferred embodiment of the invention, the midportion being illustrated'partly in elevation; and
Fig. 2 represents a horizontal section taken on the line 2-2 of Fig. 1.
Dehumidification pursuant to the invention is IU of highly porous dehumidifying material is set into a cylindrical housing II, which may be conveniently formed from sheet metal. The tube I 0 extends longitudinally through the housing I I, passing through aligned receiving apertures preferably formed centrally of opposite end plates l2 and i3 of the housing. Flange collars In and Ba may be struck from the respective end plates, circumferentially of the respective receiving apertures, for anchoring the tube ID in position.
The housing ll forms a chamber i4 completely surrounding the greater portion of the length of the tube l0. Through this chamber the air or other gas to be dehumidified is passed. For this purpose, a supply conduit l5 leads into the top of the housing il through a suitable receiving aperture provided in the upper end plate l2 to one side of the aperture through which the tube I 0 extends. The supply conduit I5 is connected to the source of the air or other gas to be dehumidified (not shown), and, if found desirable in any particular instance, a conventional type of blower may be utilized to induce a positive flow through such supply conduit toward the chamber I 4.
A discharge conduit l6 leads from the bottom of the housing It through a suitable receiving aperture provided in the lower end plate i3, preferably at a side of the housing II which is oppoof highly pervious dehumidifying material so that a maximum effective dehumidifying surface area is had.
It is preferred that the dehumidifying material employed be that disclosed and claimed in my co-pending application Serial No. 157,136-fi1ed August 3, 1937, and entitled Dehumidifying material, now U. S. Patent No. 2,255,041. Such material may be molded int desired shape in its formative stage. It is extremely porous throughout, andthe individual pores thereof intercom- -municate so that distribution of absorbed moisture, and passage thereof through the body of the material, is facilitated. Further, the body of the material is rendered chemically hygroscopic by reason of a calcium chlorine constituent.
While the above specified dehumidifying material is particularly advantageous because of its peculiar characteristics, other pervious materials may be successfully used.
In the preferred embodiment illustrated, a tube site that into which the supply conduit 15 directly leads. l
Heated, relatively dry air or other gas is passed upwardly through the tube iii. For supplying the same, a gas burner I! may be disposed at the lower end of the tube It) so that air heated thereby will pass upwardly through the hollow interior of tube H), as lna chimney. The heated, relatively dry air or other gas-may be supplied in any other suitable manner, however, as for instance by connecting a conduit, leading from any suitable source of the heated, relatively dry air or othergas, to the bottom end of the tube In. The spent heated air or other gas may pass-freely out of the top of the tube i0 after traversing the length thereof, or, if desired, discharge piping (not shown) may be connected to the upper end of the tube l0.
Air or other gas to be dehuinidified is supplied to the interior of the casing ll through the supply conduit l5, and is withdrawn therefrom through discharge conduit l6. In its consequent downward flow through the chamber H, such air or other gas to be dehumidified passes over the outside wall surface of the dehumidifying tube i0, in intimate contact therewith, and gives up its moisture content to that wall surface. The heated air or other gas flows upwardly within the tube l0, passing over the inside wall surface of the dehumidifying tube l0, and by reason of its dry character, vaporizes and carries off moisture from such inside wall surface. Because the entire body of the wall of tube: is pervious to moisture, the flow of heated air or other gas continuously and eifectively regenerates the dehumidifying outer surface of the wall of tube [0.
Means for absorbing the latent heat of vaporization released adjacent the dehumidifying outer walls of the tube I0, may be provided in the form of a coiled pipe 18, advantageously of copper, and forming a component part of a circulation system of any desired type (not shown) whereby water, or other cooling fluid, is circulated continuously through the piping.
The specifically illustrated and described embodiment represents a very advantageous practical utilization of'the generic concepts of the invention. It should be realized, however, that many changes may be made in such embodiment and many other embodiments may be made by of the other oi said channels; a source of heated gas in communication with said last named inlet; and a heat transfer element disposed in contact with the face of said wall open to the first named channel to remove the latent heat of condensation.
2. Dehumidifying apparatus comprising a relatively long pervious tube of dehumidifying material; means forming an enclosed chamber about substantially the length of said-tube; an inlet and an outlet for passing air, or other gas to be dehumidifled, through said chamber and in intimate contact with the outside face of said tube, an inlet, an outlet, and a source of heated gas in communication with said inlet for passing relatively dry heated gas through said tube in intimate contact with the inside face of said tube; and a cooling element disposed about the outer wall of said tube in heat exchange relationship therewith.
3. Dehumidifying means comprising a chamber having an inlet and an outlet; an open-ended tube of pervious water absorbtive material disposed within said chamber; an inlet and an outlet for passing air or other gas to be dehumidified through said chamber in intimate contact with the outer surface of said tube over substantially
US399793A 1941-06-26 1941-06-26 Dehumidifying apparatus Expired - Lifetime US2336456A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433741A (en) * 1943-02-13 1947-12-30 Robert B P Crawford Chemical dehumidifying method and means
US2478617A (en) * 1948-03-18 1949-08-09 Pierce John B Foundation Air conditioning system
US2517499A (en) * 1947-05-14 1950-08-01 Carrier Corp Dehumidifying apparatus
US2517537A (en) * 1947-04-09 1950-08-08 Pierce John B Foundation Dry-storage box
US2525307A (en) * 1948-07-24 1950-10-10 A V Roe Canada Ltd Drain wick for pressurized compartments
US2580404A (en) * 1946-03-14 1952-01-01 Burl H Bush Method and apparatus for controlling humidity
US2588339A (en) * 1948-04-29 1952-03-11 Pierce John B Foundation Dehumidifying system
US2601905A (en) * 1948-03-02 1952-07-01 Pierce John B Foundation Dehumidification system for buildings
US2842223A (en) * 1955-12-22 1958-07-08 David M Zall Desiccant material
US2910836A (en) * 1957-08-12 1959-11-03 Minnesota Mining & Mfg Fluid heating and cooling apparatus
US3200569A (en) * 1962-01-31 1965-08-17 Varian Associates Sorption gas and vapor trap apparatus
US4374655A (en) * 1981-12-07 1983-02-22 Lockheed Missiles & Space Company, Inc. Humidity controller
US4377398A (en) * 1977-04-21 1983-03-22 Motorola Inc. Heat energized vapor adsorbent pump
EP0335670A3 (en) * 1988-03-29 1991-10-30 Daiken Kogyo Kabushiki Kaisha Humidity conditioner
US5092135A (en) * 1990-11-09 1992-03-03 Charles Cameron Air conditioning system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433741A (en) * 1943-02-13 1947-12-30 Robert B P Crawford Chemical dehumidifying method and means
US2580404A (en) * 1946-03-14 1952-01-01 Burl H Bush Method and apparatus for controlling humidity
US2517537A (en) * 1947-04-09 1950-08-08 Pierce John B Foundation Dry-storage box
US2517499A (en) * 1947-05-14 1950-08-01 Carrier Corp Dehumidifying apparatus
US2601905A (en) * 1948-03-02 1952-07-01 Pierce John B Foundation Dehumidification system for buildings
US2478617A (en) * 1948-03-18 1949-08-09 Pierce John B Foundation Air conditioning system
US2588339A (en) * 1948-04-29 1952-03-11 Pierce John B Foundation Dehumidifying system
US2525307A (en) * 1948-07-24 1950-10-10 A V Roe Canada Ltd Drain wick for pressurized compartments
US2842223A (en) * 1955-12-22 1958-07-08 David M Zall Desiccant material
US2910836A (en) * 1957-08-12 1959-11-03 Minnesota Mining & Mfg Fluid heating and cooling apparatus
US3200569A (en) * 1962-01-31 1965-08-17 Varian Associates Sorption gas and vapor trap apparatus
US4377398A (en) * 1977-04-21 1983-03-22 Motorola Inc. Heat energized vapor adsorbent pump
US4374655A (en) * 1981-12-07 1983-02-22 Lockheed Missiles & Space Company, Inc. Humidity controller
EP0335670A3 (en) * 1988-03-29 1991-10-30 Daiken Kogyo Kabushiki Kaisha Humidity conditioner
US5092135A (en) * 1990-11-09 1992-03-03 Charles Cameron Air conditioning system

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