GB2165465A - Drying apparatus - Google Patents
Drying apparatus Download PDFInfo
- Publication number
- GB2165465A GB2165465A GB8425993A GB8425993A GB2165465A GB 2165465 A GB2165465 A GB 2165465A GB 8425993 A GB8425993 A GB 8425993A GB 8425993 A GB8425993 A GB 8425993A GB 2165465 A GB2165465 A GB 2165465A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drying
- gas
- inlet
- regeneration
- drying apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F24F3/1423—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 with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
-
- 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
- B01D53/261—Drying gases or vapours by adsorption
-
- 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
- F24F2003/1464—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 using rotating regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1004—Bearings or driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1012—Details of the casing or cover
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1032—Desiccant wheel
- F24F2203/1036—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1056—Rotary wheel comprising a reheater
- F24F2203/106—Electrical reheater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1068—Rotary wheel comprising one rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1084—Rotary wheel comprising two flow rotor segments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1096—Rotary wheel comprising sealing means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Gases (AREA)
Abstract
A drying apparatus 10 for drying gas is provided in which an annular regenerative rotor 16 is mounted for rotation about an axis. The rotor is provided with separate drying and regenerative zones each with a respective inlet 22, 34 and outlet 28, 48. The inlet for the regenerative zone is such that it may either draw regenerative gas from the incoming air stream of the air to be dried or from a separate condenser 56 by coupling means 70 which simultaneously break the connection to the incoming air stream at 34 (Figures 4 and 5, not shown). The arrangement permits the same apparatus to be used where exhaust to atmosphere of regenerative gas is not possible or practical. <IMAGE>
Description
SPECIFICATION
Drying apparatus
The present invention relates to a drying apparatus for drying gas and contains an annular rotor mounted about an axis and having moistureabsorbing ability, the rotor having a sector-shaped drying zone in communication with inlet and outlet for the gas such as air which is to be dried, the so-called drying gas, and a sector-shaped regeneration zone in communication with inlet and outlet for a warmer, pre-heated regeneration gas, one end surface of the rotor being in communication with an opening corresponding to the peripheral extension of the drying zone, said opening being the inlet for incoming drying gas which is supplied with the aid of a fan means or the like, there being a separate duct arranged for supplying regeneration gas to the regeneration zone.
Drying apparatus for moisture exchangers of the kind described function in a known way such that the moisture-absorbing mass of the rotor takes up moisture from the gas which is to be dried, usually air. The regeneration gas which also is usually air is pre-heated before passage through the regeneration zone in the rotor so that it obtains the necessary ability of removing the moisture which the rotor mass has taken up in the drying zone. After passage through the regeneration zone, the regeneration gas is taken where possible out into the open as having been consumed. However, in certain applications, e.g. for drying in rock cavens and the like it is not always possible to remove the moist regeneration gas from the spaces where the air is to be dried, and it must be re-used.Dehumidifying the regeneration gas can then be carried out by it being passed through a separate condenser where the moisture is precipitated as condensate. So far, it has been necessary in principle to have different implementations of drying apparatus depending on the field of use.
The chief object of the present invention is to provide a drying apparatus with extremely simple and compact construction which can be used without any special adjusting problems for all occurring cases of use.
Another object is to provide a drying apparatus of the kind described with a simple regulation of the drying apparatus operation for adjusting to variations of the conditions in the environment where the apparatus is in operation.
A still further object of the invention is to provide in a drying apparatus of the kind described a reliable separation of the different zones of the apparatus so that the most efficient possible regeneration and drying results are obtained.
These and other objects of the invention are achieved by being given the characterizing features disclosed in the following claims.
The invention will now be described by way of example with reference to an embodiment illustrated in the accompanying drawings, in which:
Figure 1 is a perspective, exploded view of the details of the drying apparatus in accordance with the invention;
Figure 2 is a perspective view of a condenser intended for connecting to the drying apparatus of
Figure 1;
Figure 3 is a perspective partially sectioned view of the drying apparatus according to Figure 1 and the condenser according to Figure 2 when connected together;
Figure 4 is a section through the lower left-hand portion of Figure 1 when the apparatus is in use; and
Figure 5 is a section similar to the one in Figure 4 on another occasion when the apparatus is in use.
The drying apparatus in accordance with the invention is enclosed in a housing 10, which is only schematically illustrated by its contour lines in
Figure 1. The housing includes two horizontal, flat partition walls 12, 14which divide the housing into three chambers. In an upper chamber, a regenerative drying rotor 16 is mounted for rotation about a vertical shaft (not more closely shown) and is connected to an opening 18 in the partition wall 12 by means of sealing strips or the like (not shown).
The rotor 16, with its moisture-absorbing capacity, may consist of alternate flat and corrugated layers, e.g. of mineral fibre, glassfibre, metal or the like which are spirally wound on to each other to form the cylindrical rotor body 16. The rotor may also have a different structure such as a rotating silica gel bed or the like. The folds of the corrugated layers extend axially in the rotor so that a large number of small axial ducts are formed, which are open at the lower and upper end surfaces of the rotor 16. The moisture-absorbing ability of the rotor is obtained by the layers being coated or impregnated with a hydroscopic substantive, e.g. molecular sieves, lithium chloride or aliminium oxide or some other sorption agent. Rotors of this kind are described, inter alia, in U.S. Patent 4,391,667.The rotor 16 is driven at a low rate of revolutions, for example, by means of an endless belt arranged around the exterior casing of the rotor 16 and which is driven by a motor (not shown).
In the present embodiment, the gas which is to be dried is assumed to be air which comes in from the space where the drying apparatus is set up via a filter 20 to an inlet opening 22, which is separated by an inclined, substantially vertical wall 24 from the chamber formed between the compartment walls 12 and 14. From the inlet opening 22 air passes into a chamber defined between the compartment wall 14 and the bottom of the drying apparatus. This bottom chamber has communication, via an opening in the compartment wall 14, with a fan means, here illustrated in the form of a fan wheel 26, which sucks in air to the inlet 22 and conveys it further to the opening 18 up into the driving zone of the rotor 16.
After passage through the rotor 16 where the drawn-in-drying air has deposited its moisture on the moisture-absorbing mass of the rotor, the dried air flows, as indicated by the arrows, from the upper end wall surface of the rotor through an outlet 28 to a filter 30 and back again to the room which is being dehumidified.
In the chamber situated between the compartment walls 12 and 14 there is also arranged an inlet housing 32 for the regeneration air, this housing having an inlet opening 34 spaced from the corresponding wall of the drying apparatus housing 10, as will be described more closely below. The inlet 32 connects to an opening 36 in the compartment wall 12 from which opening a tube-like separate duct 38 leads regeneration air to the regeneration portion arranged on the upper side of the rotor 16. Regeneration air can either, as illustrated in the embodiment in Figure 1, consist of a partial stream of the room air sucked in by the fan 26 or, as described more closely below, consist of recirculated regeneration air from which the moisture has been removed as condensate.
The regeneration apparatus is enclosed in a schematically illustrated casing 40 and comprises a fan means 42 connecting to, and sucking regeneration air from, the duct 38 via a heater 44 for supplying to the regeneration zone on the upper side of the rotor 16. The regeneration zone is screened off from the rotor drying zone with the aid of a casing 46 engaging against the upper side of the rotor 16 via an intermediate seal. A similar casing (not shown) on the underside of the rotor which screens off the regeneration zone from the remainder of the drying apparatus is connected to a tubular duct opening out in an opening 48, constituting the outlet for the consumed regeneration gas.For maintaining the regeneration temperature a sensor 50 is arranged in accordance with the invention after the heater 44, the sensor being illustrated in detail in Figure 1a, and senses the temperture of the regeneration air after the heater 44. The sensor is connected to an unillustrated regulator for the fan 42, such that the rotational speed of the fan wheel 42 falls if the temperature of the regeneration air decreases, while the revolutionary speed of the fan is regulated to increase if the temperature of the regeneration air increases.
In the embodiment illustrated in Figure 1, the regeneration air is taken in, as mentioned above, as a partial stream of the room air which is to be dried, the so-called drying gas. The inlet housing 32 for the regeneration gas is arranged spaced from the drying apparatus housing 10, which is also illustrated in
Figure 4, while the wall of the housing 10 has an opening situated opposite the inlet 34 having the same size as the inlet and closed off by a cover 52 in this case. Both the opening 34 of the inlet housing 32 and the corresponding opening in the housing 10 are provided with annular seals 54. The consumed regeneration gas departing via the outlet 48 is in this case taken, e.g. with the aid of a hose or the like, to the exterior atmosphere outside the room which is to be dehumidified.
In the case where the consumed regeneration air cannot be taken away from the room, a condenser 56 is used, as illustrated in Figures 2 and 3, to remove moisture from the regeneration gas and reestablish its ability to regenerate the drying rotor 16. The condenser 56 is of a conventional kind and is suitably made with the same dimensions as the drying apparatus 10, at least on the side intended for connection to it. The drying apparatus 10 is thus provided with hooks 58 arranged to engage complementary pins 60 arranged on the condenser 56 for coupling together both units 10,56 as illustrated in
Figure 3.The condenser has for example two inlets 62 for cool air taken from the room, and is conventionally provided in the present case with two heat exchanger cells, e.g. flat heat exchangers with lamella of aluminium, in which the consumed regeneration air from the outlet 48, which streams into the condenser 56 via a pipe stub 64 is cooled so that the water condenses. The condensate is led away from the condenser via a hose 66 to a suitable drain.
The consumed cool air in the condenser goes out into the room via the outlet 68. The dehumidified regeneration air is taken from the condenser 56 via a pipe stub 70 to the opening 34 in the inlet housing 32 for the regeneration gas in the drying apparatus 10.
The pipe stub 70 thus constitutes a connection means between the condenser apparatus 56 and the drying apparatus 10, and at the same time as it supplies the dehumidified regeneration gas to the inlet housing 32 also breaks the supply of the partial stream from the fanwheel 26 to the same inlet housing 32 by bridging over the gap S between the housing wall of the drying apparatus 10 and the inlet housing 32, as illustrated in Figure 5. The hose (not illustrated) and cover 52 which otherwise closes off the opening in the housing wall of the drying apparatus 10 according to Figure 4 are of course removed for connecting together the condenser 56 and the drying apparatus 10 in this way.
Claims (9)
1. Drying apparatus for drying gas and contains an annular rotor mounted about an axis and having moisture-absorbing ability, the rotor having a sectorshaped drying zone in communication with inlet and outlet for the gas such as air which is to be dried, the so-called drying gas, and a sector-shaped regeneration zone in communication with inlet and outlet for a warmer, pre-heated regeneration gas, one end surface of the rotor being in communication with an opening corresponding to the peripheral extension of the drying zone, said opening being the inlet for incoming drying gas which is supplied with the aid of a fan means or the like, there being a separate duct arranged for supplying regeneration gas to the regeneration zone, characterized in that the separate duct (32, 38) for the regeneration gas is provided with inlet means (34) adapted for connection either to the inlet (22) for the drying gas for taking out a partial stream from the drying gas as regeneration gas, or alternatively to the coupling means (70) adapted for coupling a separate condenser apparatus (56) to the drying apparatus (10), said coupling means (70) simultaneously breaking the supply of the partial stream of drying gas to the separate duct (32,38).
2. Drying apparatus as claimed in claim 1, characterized in that the drying gas is supplied to the rotor (16) via an inlet box (12,14) in which there is arranged an inlet housing (32) for the regeneration gas, said inlet housing having an opening (34) adapted with a space (S) to the wall of the inlet box which also constitutes the outer wall of the drying apparatus (10), the wall having an opening of the same size and of the same level as the opening (34) in the inlet housing (32), said opening being closable with a cover (52) or is passed through by the coupling means (70) of the condenser apparatus (56), the coupling means (70) being made such that the gap (S) is bridged over by it.
3. Drying apparatus as claimed in claim 2, characterized in that the coupling means 70 of the condenser apparatus (56) consists of a pipe stub (70) fitting into the openings in the inlet housing (32) and inlet box (12, 14) and has a length such that it bridges the gap (S) between said openings.
4. Drying apparatus as claimed in claim 1, characterized in that the drying apparatus (10) and the condenser apparatus (56) are made with the same dimensions, at leastfortwo side walls arranged for connection to each other, said coupling means (70) being disposed on this side wall of the condenser apparatus (56).
5. Drying apparatus as claimed in any claims 1-4, characterized by a sensor body (50) arranged in the regeneration circuit after the heater (44) such as to regulate via a regulator the revolutionary speed of a fan (42) driving the regeneration gas through the rotor (16) such that the revolutionary speed of the fan falls if the temperature of the regeneration gas decreases, and increases if the temperature of the regeneration gas increases, so as to maintain the regeneration temperature.
6. Drying apparatus as claimed in any of claims 2-4, characterized in that the openings in the inlet box (12, 14) and inlet housing (32) are provided with sealing means (54) for sealing against the coupling means.
7. Drying apparatus as claimed in any of claims 1-6, characterized in that the condenser apparatus (56) is provided with duct means (64) adapted for connection to an outlet (48) in the drying apparatus (10) for the consumed regeneration air.
8. Drying apparatus for drying gas comprising an annular rotor mounted for rotation about an axis and having a moisture-absorbing ability, the rotor having a drying zone in communication with an inlet and an outlet for the gas, such as air, which is to be dried (the drying gas), and a regeneration zone in com municationwith an inlet and an outlet for a warmer, pre-heated regeneration gas, the inlet for the regeneration gas being arranged, eitherto draw the regeneration gas from the drying gas supply or, alternatively, to be coupled with a separate condenser apparatus by coupling means which simultaneously break the supply of the drying gas.
9. Drying apparatus substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8425993A GB2165465B (en) | 1984-10-15 | 1984-10-15 | Drying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8425993A GB2165465B (en) | 1984-10-15 | 1984-10-15 | Drying apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8425993D0 GB8425993D0 (en) | 1984-11-21 |
| GB2165465A true GB2165465A (en) | 1986-04-16 |
| GB2165465B GB2165465B (en) | 1988-01-06 |
Family
ID=10568198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8425993A Expired GB2165465B (en) | 1984-10-15 | 1984-10-15 | Drying apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2165465B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990006165A1 (en) * | 1988-11-25 | 1990-06-14 | Corroventa Ab | A method and apparatus for drying air |
| US5709736A (en) * | 1994-11-24 | 1998-01-20 | Kankyo Co., Ltd. | Moisture control unit |
| US6083304A (en) * | 1998-01-26 | 2000-07-04 | Kankyo Co., Ltd. | Method and apparatus for dehumidifying air |
| WO2000074819A1 (en) * | 1999-06-04 | 2000-12-14 | Flair Corporation | Rotating drum adsorber process and system |
| US6361585B1 (en) * | 1999-09-06 | 2002-03-26 | Fujitsu Limited | Rotor-type dehumidifier, starting method for rotor-type dehumidifier and an electronic device mounting the rotor-type dehumidifier |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524888B (en) * | 2020-12-03 | 2022-03-22 | 塔里木大学 | A quick drying equipment for brown rice production and processing |
| CN113457391A (en) * | 2021-06-08 | 2021-10-01 | 朱军彪 | Miniature modular dryer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB890790A (en) * | 1957-04-12 | 1962-03-07 | Lizenzia A G | Improvements in or relating to regeneration of moisture exchangers for gaseous media |
-
1984
- 1984-10-15 GB GB8425993A patent/GB2165465B/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB890790A (en) * | 1957-04-12 | 1962-03-07 | Lizenzia A G | Improvements in or relating to regeneration of moisture exchangers for gaseous media |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990006165A1 (en) * | 1988-11-25 | 1990-06-14 | Corroventa Ab | A method and apparatus for drying air |
| US5709736A (en) * | 1994-11-24 | 1998-01-20 | Kankyo Co., Ltd. | Moisture control unit |
| US6083304A (en) * | 1998-01-26 | 2000-07-04 | Kankyo Co., Ltd. | Method and apparatus for dehumidifying air |
| US6235086B1 (en) | 1998-01-26 | 2001-05-22 | Kankyo Co., Ltd. | Method and apparatus for dehumidifying air |
| SG104251A1 (en) * | 1998-01-26 | 2004-06-21 | Kankyo Co Ltd | Method and apparatus for dehumidifying air |
| USRE38893E1 (en) * | 1998-01-26 | 2005-11-29 | Kankyo Co., Ltd. | Method and apparatus for dehumidifying air |
| WO2000074819A1 (en) * | 1999-06-04 | 2000-12-14 | Flair Corporation | Rotating drum adsorber process and system |
| US6447583B1 (en) | 1999-06-04 | 2002-09-10 | Flair Corporation | Rotating drum adsorber process and system |
| US6527836B1 (en) | 1999-06-04 | 2003-03-04 | Flair Corporation | Rotating drum adsorber process and system |
| US6361585B1 (en) * | 1999-09-06 | 2002-03-26 | Fujitsu Limited | Rotor-type dehumidifier, starting method for rotor-type dehumidifier and an electronic device mounting the rotor-type dehumidifier |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2165465B (en) | 1988-01-06 |
| GB8425993D0 (en) | 1984-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19921015 |