MXPA04010899A - Dehumidifying product. - Google Patents

Abstract

A dehumidifying product comprises a chamber (49) containing a deliquescent agent bounded at least in part by a vapour-permeable membrane (48), and a housing (44). The chamber has a stowed configuration within the housing. In the stowed configuration the chamber is isolated from the surrounding air. The chamber also has an operative configuration in which it is upstanding from the housing and exposed to the surrounding air, to extract water vapour from it.

Description

DEHUMIDIFICATION PRODUCT FIELD OF THE INVENTION The present invention relates to a product and method for absorbing water vapor, particularly, but not exclusively, to dehumidify air in a confined space.

BACKGROUND OF THE INVENTION Humidity, or water vapor in the air, is often desirable since water can interfere with the storage of materials. - sensible-to ..-- the- - humidity, "" taires "" as-foodstuffs, cosmetics, pharmaceuticals, household goods and clothing, or may adversely affect the operation of equipment sensitive to moisture. This problem can be seen particularly pronounced in those areas where humidity levels are particularly high, such as those countries that have hot humid climates. . .; Therefore, it is often desirable to shumi di fi i car air. Traditional methods to de-aerate the air include the use of mechanical cooling equipment and water-absorbing thermal rods, such as silica gel. Typically, methods employing refrigeration equipment involve cooling air at a predetermined temperature below its dew point, so that the water in the air condenses and the water can be drained. From the above, the air can be reheated to a predetermined warmer temperature. The techniques that include absorbent materials can include continuous operation systems so that the water is absorbed by the absorbent in. a first, cycle and then deaerated from the absorbent by means of .1 a.;,. ap 1 i ca c i on: de; -heat on-; a :: - second- cyclev ·: ":" - - Typically, these techniques present several disadvantages since, as a rule, they require bulky and heavy equipment, such as compressors, fans and heaters, which are interconnected by a network of pipes so that water vapor from the air is continuously absorbed. Typically, such systems are not convenient for operation in a confined or limited space. In addition, the cost associated with such systems may prohibit their use in a domestic environment.

• In an attempt to overcome the disadvantages associated with the use of the aforementioned systems in a confined or limited space, alternative techniques have been developed that include exposing the air to an absorbent material. In particular, smaller portable devices comprising a sealed vapor permeable container housing an absorbent material for dehumidifying air in a confined or confined space, particularly in a domestic environment, have been employed. Although these devices can be used with absorbers such as silica gel, typically silica gel only absorbs up to 30% of its water, --- ---. It is necessary to use an absorbent that has a superior capacity to absorb water vapor to prolong life and improve the efficiency of the device.

Conveniently, hygroscopic deliquescent agents such as calcium chloride, which can absorb 4 to 5 times their weight of water, have been employed in said devices. By absorbing water vapor, the deliquescent agent dissolves to form a liquid. Although these devices have served to solve problems associated with the absorption of water vapor in a confined or limited space, particularly in a domestic environment, such devices have been bulky and with poor aesthetic designs.

SUMMARY OF THE INVENTION According to a first aspect, the present invention provides a dehumidification product comprising a chamber containing a deliquescent agent at least partially bound by a vapor permeable membrane and a alloy; where the camera has a _c nf igur, ation - "- e st iba da ··. .su s t a r. r; i) mon t - .1e n i: rr o against the housing and an operational configuration in which it is substantially not inside or against the housing. In use, preferably the camera is in an upright position from the housing. Conveniently, the camera is retracted from the housing, to move the camera from its stowed configuration to its operational configuration. Conveniently, the housing serves as a base, by means of which the product can be held in an upright position on a surface. The camera can have a hook by means of which the product can be hung from a rail, a cable, a hook or the like. The housing can be adapted to collect liquid dripping from the chamber. In said embodiments, the lower region of the chamber: can be joined at least in part by means of a liquid permeable membrane. Preferably, the entire membrane is a vapor permeable and liquid permeable membrane. However, in certain modalities, the membrane may be impervious to injury.; .. "en_ said - -modalities | ·; - - -the" - camera "* is designed to retain within it all the liquid that is collected. Preferably, the product is such that, when the chamber is in the stowed configuration, the chamber is substantially insulated from the surrounding air. In some embodiments, this can be achieved by providing the camera, and preferably the product of the product, in an additional water impermeable barrier, which is removed for use. In other modalities, this can be achieved by virtue of the design of the product itself. For example, the chamber can be sealed in the housing until it is needed. It can be taken out of the accommodation for its use. The camera can have a flexible shape, for example, in the form of an envelope. Alternatively, the camera may have a generally rigid form. For this, you can include a _, self-supporting plastic material. By way of ·. Convenient, it can include strips or protrusions of a plastic material separated by membrane windows. The housing may have a flexible form.,. ... for example, . · .- the -; - f-o-r-ma- of ^ - a- bag, especially the form of "doy bag" (bag that can be kept flexible). Alternatively, a housing can have a generally rigid form, for example, of a self-supporting plastic material. When the housing has a flexible shape, a design that can be held on a horizontal surface, with the camera on top of the housing in use, is preferable. > A flexible housing may be in the form of two side walls of flexible material that are joined along their side edges but are spaced apart at the bottom of the housing, so that there is a bottom wall of oval shape or in a certain way oval The side walls are close to one another in the upper region of the housing. In one embodiment, the walls do not coincide to close the edge. superior of the accommodation. Rather, they leave a narrow space k and the camera can be raised through this opening to move it from the. configuration stowed to the operational configuration. _ _ When. ".la-, - camera - -es. The flexible material can be designed to fold down to rest against one of the side walls of the housing in the stowed configuration. In another embodiment, the chamber, or a mesh of material between the chamber and the housing, is formed with a series of folds-or folds, so that in the stowed configuration, the chamber is retained in a compact condition against the housing. It is lifted from this compact condition to put it in the operational configuration. When the housing is made of a flexible material, preferably the camera is also made of a flexible material. When the housing is of a rigid material, it can have the shape of a well or tub that holds the camera in its entirety, in the stowed configuration. Preferably, the chamber is lifted substantially out of the housing in some way, to bring it into its operational configuration. Preferably, the camera is supported by, for example, lying on, the housing, in its operational configuration. Preferably, "the design of the product is such that the camera is securely attached to the antenna in order to protect it against accidental separation. When the housing is of a rigid material, the chamber preferably also is of a rigid material. The following paragraphs describe different modalities in which the housing and the chamber are made of a rigid material. In one embodiment, the product has a clamping ring, preferably threaded, by means of which, the chamber is firmly secured to the. accommodation, in the stowed configuration and / or the operational configuration. For this purpose, preferably, the chamber has an outwardly facing annular flange which engages the circular frame that is around the housing inlet. In the operative configuration, the flange of the camera lies on the frame and the ring secures them together. To achieve the above, the ring has a cylindrical wall and an inwardly facing ridge that is orthogonally dependent thereon. In the operative configuration, the camera lies on and projects upwards from the housing. In the stowed configuration, the camera is _ inverted ^ .. La, --- another-. : supe rf ic ie del. "camera edge lies on the frame around the entrance of the housing and the ring secures them to each other, where the rim of the ring traps the rim of the camera against the frame. the fresh product, the wall of the chamber that is higher in the stowed configuration is impervious to vapor and liquid in the stowed configuration, preferably only temporarily impermeable to vapor and liquid. membrane that is covered by a removable foil, a removable cover or similar, that wall will be the lowest in the operational configuration in this modality and, because the housing is below the chamber and has the capacity to collect liquid, the membrane In this wall, conveniently, it can be a liquid permeable membrane In an alternative embodiment, the user can lift the camera from its stowed position. nter of the accommodation to its operative position, standing from the accommodation. In this mode, the camera is not removed or inverted to put it in its operational configuration. It is simply lifted ..... From ... preference-, .-- the camera - is "from" 'a horizontal cross section without modification; for example, it can be a prism or a cylinder. Means are provided to retain the camera in its operational configuration. Said means may comprise a thread, a latch or, preferably, a friction interference fit. Preferably, the chamber in this mode is circularly cylindrical. Preferably, the upper end of the chamber in this embodiment has a cap attached to it, and has a threaded coupling between the cap and the housing. To move the camera to its stowed configuration, the user must release the cover of the housing by means of a unscrewing action; and when the threads have been uncoupled, simply lift the lid, thus raising the camera to its operational configuration. The lid can have a central circular part that can be uncoupled from a ring that carries the thread and the chamber can be provided as a removable and replaceable cartridge, in such a way that the cartridge can be accessed when the lid is removed, can pull through the ring, can be removed, the. liquid-from-the-ojaitirento and "can introduce a new cartridge." In another embodiment where the camera can be lifted in relation to the housing, the camera has a portion that projects from the housing, in the stowed configuration. Preferably, this portion does not include any area of vapor permeable membrane.The user can grasp this portion to pull it upward, relative to the housing, thereby exposing the vapor permeable membrane to air. In some embodiments, the user can press the camera inward, in its lower region in its operative configuration, to release the fastening parts, the camera can no longer be pulled up due to the provisioning of mechanical stop means. that act between the lower region of the chamber and the housing, to allow its removal, and means to adjust the speed at which the product can be provided. dehumidification absorbs water vapor. These can be the same means by which the camera can move between the stowed configuration and the configuration "ope rat i ya; ^, ppr -1 or - both the camera- could be used in an intermediate position of the camera or even, in certain modalities, in the stowed configuration, once unwrapped. It should be noted that the references in the present invention to "the operational configuration" do not imply that there is only one operative position; the term "operating configuration" is generally used to refer to the fully extended configuration and / or the configuration for maximum absorption speed.

Frequently, there are other possible, less extended and / or operating configurations that provide a lower absorption speed. As noted above, in some embodiments of the present invention, the camera can be removed from the housing. In these modalities, fresh cameras can be supplied as spare parts. According to a second aspect of the invention, a humidification device is provided which comprises a product of the humidification of the present invention, as defined above, of a type wherein the The camera can be removed from the housing, and at least one fresh chamber ... which contains an agent, isolated from the surrounding air until required. Preferably, the deliquescent agent has the ability to absorb at least its own weight in water at 25 ° C. Preferably, the deliquescent agent forms a liquid or gel by absorbing water vapor, and is such that the liquid is filtered therefrom. Preferred deliquescent agents include calcium chloride and / or magnesium chloride, since these not only show an acceptable water absorption capacity but are also relatively non-caustic. Saturation can be determined by pressing the membrane to assess the gel state of the deliquescent agent. Alternatively, the deliquescent agent may contain a color change agent that acts as an indicator of the saturation of the deliquescent agent. In some modalities where the water drips; Within the accommodation, this may be visible. By way of. Conveniently, the deliquescent agent, as defined above, can be mixed with other agents selected from a binding agent, such as starch, a perfume and an antimicrobial agent. p .. combinations- of the same. Preferably, the housing and / or the chamber comprises a plastic material, preferably a thermoplastic material such as polyvinyl chloride, polyester, polypropylene and polyethylene. When they are generally rigid, they are preferably configured by a molding process, preferably from a sheet of plastic material (for example, by vacuum forming) or from a polymer material in the melt (for example, by injection molding) . In many embodiments, an opening is formed in the molding process or it is formed later; and then it is closed by the membrane. Many suitable membranes are commercially available and / or described in the literature. Preferably, a material that can accept at least 500 g, more preferably at least 1,000 g, is selected, even with , preferably at least 2, 000g of water vapor / m2 / day. Suitable membranes can be. of polyethylene, polypropylene, polyester and polyamide. They can be microporous and can be permeable to liquid or waterproof s-to-1 -.- -f, as required. The membranes permeable to the liquid can be perforated, as long as the deliquescent agent is retained. The membrane can be secured to an adjacent part of the chamber, or to another membrane when the chamber is in the form of an envelope, by an adhesive seal or by heat sealing. Preferably, the deliquescent agent is in contact with said membrane in the chamber. Preferably, a surface of the product that faces outwards in the stowed configuration is printed, for example, with a mark, graphics, explanation notes and the like. Preferably, you do not have a printed secondary package. However, the product of packaging can be wrapped conveniently in a vapor and liquid impermeable packaging to the point of sale, to have a maximum shelf life and / or utility for the customer. Said package can be a transparent film. Alternatively, instead of said film, a strip of removable cover or foil may be provided on the membrane or on each membrane that is exposed to the air in use., the cover strip (s) or sheet (s) are removed, eg,. usq..T, - -.-. - ~. ------ - According to a third aspect of the present invention, a method is provided for absorbing water vapor from a location, preferably an enclosed location, the method comprising the steps (in any order) of a) change a dehumidification product from the first aspect of its stowed configuration to its operational configuration, and b) place it in place.

BRIEF DESCRIPTION OF THE FIGURES The invention will now be further described, by way of example, with reference to the appended figures, wherein: Figure 1 is an expanded perspective view of a first embodiment of the dehumidification product of the present invention; Figure 2 is a view corresponding to that of Figure 1, but where the product is shown assembled; Figure 3 is a side profile view of the shumi di f i cation product of Figures 1 and 2, in a stowed configuration; Figure 4 is a "corresponding view" here of Figure 3, with the product in the operative configuration; Figures 5A-5D are a series of views of a second embodiment of the product of shumi di fi cae i ón, which goes from the stowed configuration (as sold) (Figure 5A) to the operational configuration, configured for a maximum absorption speed (Figure 5D); Figure 6 is a side-schematic view of a third embodiment of the dehumidification product; Figure 7 is a corresponding front photo view, Figure 8 is a view of the product of Figures 6 and 7, in the stowed configuration, for reduced absorbency; Figures 9A-9B are respective side sectional views of a fourth embodiment of the product; of dehumidification, in a stowed configuration (Figure 9?) and in an operational configuration (Figure 9B); Figures 10A-10E are a series of perspective representations showing the steps for reconfiguration; Figure the stowed product of Figure 9A in the operative product of the figure - 9B. Figures 11A-11B are side sectional views of a fifth embodiment of the dehumidification product, respectively in the stowed and operative configurations; Figures 12A-12B are perspective style photographic representations corresponding to those of the figures ll- HB: Figures 13A-13B are side sectional views of a sixth embodiment of the dehumidification product respectively in the stowed and operative configurations, and Figures 14A-14B are perspective views of the sixth embodiment, wherein Figure 14A is a seen in parts and Figure 14B shows the product in its operational configuration.

DETAILED DESCRIPTION OF THE INVENTION In all the described embodiments, a vapor permeable and liquid permeable membrane 20 of microperforated polyethylene is used. The sealing of the membrane to itself or to adjacent parts of the chamber can be done by means of an adhesive or by the application of heat. In all modalities. . described, the deliquescent agent is calcium chloride in granular form. The first embodiment of the shuffling product, shown in Figures 1-4, comprises a chamber 2 containing a deliquescent agent and, below the chamber 2, a housing 4. The housing 4 is in the form of a flexible bag and comprises two sheets of resistant flexible plastic material 6, 8. The sheets are together at their side and top edges but are separated on the rest. Therefore, the housing additionally comprises a base wall which is shown in outline as 10 in Figure 1. Due to the base wall 10 and the supporting properties of the side walls 6 and 8, the product can be put on standing on the base wall 10 as shown in Figure 2. The chamber 2 is in the form of a flexible envelope, semi-oval in elevation and consists of two membrane sheets that trap the deliquescent agent. The chamber is secured to the upper region of the housing 4. In fact, there is a narrow space between the sheets 6, 8 at the upper edge of the housing and the chamber 2 is secured in a fixed position in den.tro, -de, .- , e st e space-, but with most of chamber 2 exposed above the housing. The sheet material constituting the housing is impervious to vapor and liquid. Nevertheless, the membrane of chamber 2 is made of a material permeable to liquid and vapor. The upper region of the chamber 2 is secured thereto with a hook 12 to facilitate the hanging of the product from, for example, a cabinet rail, if it is not desired to place it on its base wall 10. As shown in figures 3 and 4, the product has a stowed configuration (figure 3) and an operational configuration (figure 4). In the stowed configuration, the hook 1.2 has been folded against a surface of the chamber 2, and the chamber 2 has then been folded against a side wall of the housing 4. This stowed configuration will typically be the way the product is offered for sale. To maintain the quality of the product, it can simply be sealed in a plastic film. To use the product, you simply have to unwrap it and open it in its operative configuration of Figures 2 and 4, _en. · Dondo or 1 - .. g r >; c. ~ or 12, - chamber 2"and" housing 4 are generally in line with each other. The user may choose to place the product on its base wall 10 or hang it, using hook 12. Water vapor passes through the membrane of chamber 2 and is absorbed by the deliquescent agent therein. When the saturation point of the deliquescent agent is reached, liquid water forms and it travels to the bottom of the chamber. In the lower part of the chamber, the water passes through the membrane, and drips into the interior space of the housing 4. In a related mode, if it is desired to ensure that the water under no circumstances passes through the membrane of the chamber in the region that is above the housing, and then running down out of the housing, the upper region of the chamber could have a vapor-permeable and liquid-impermeable membrane, wherein only a lower portion of the chamber has the permeable membrane to the liquid. Figures 5A-5B show a product of shumidi f i cae i ón that is similar in principle to the product of Figures 1-4. It also has an upper chamber _1 ^ _ _.. it contains - a - "deliquescent" agent - and - a lower housing 16 where the liquid can be collected. The housing is similar in shape, as it has side walls that come together at their side and top edges, but not at the bottom of the housing where they are on a separate base wall. One difference . It is significant from the embodiment of Figures 1-4 that the camera 14 can be slidably moved relative to the housing 16. The product is sold in the manner shown in Figure 5A, where the camera is fully contained. inside the accommodation; in fact, the housing is sealed around it. To initiate the use, the user cuts an upper strip 18 of the housing, along the marked lines provided. The user can then grasp a pull tab 20 that is connected to the camera. The traction tab can only be seen in Figure 5B. In this configuration, it is nested against the camera 14. When held, it can be moved so that it extends upwards from the camera, as shown in Figure 5C. The user can -en.oncos --- pull the 'camera towards' up using the traction tab 20, as far as required. If the user wishes to have a minor dehumidification effect and thus prolong the useful life of the product, the user can pull the camera to only one position, "/ such as the one shown in Figure 5, C. If you want to obtain a superior humidification effect, then you can remove the chamber 14 to a greater extent from the housing 16, as shown in Figure 5D. f The product of Figures 5A-5D is designed only to stand on a surface. The pull tab 20 is not intended to be a hanging device. However, if desired, it could be made in the form of a hook. The camera is disk-shaped but could, in another embodiment, be elongated, similar to a slideable "piston" inside the "cylinder": represented by the housing. The third embodiment, of Figures 6-8, is similar to the first and second embodiments, since "it also comprises a chamber 22 for dehumidifying material, and an aA, j ami.en.tq.-24, -. Both of . flexible. "Again, the housing is manufactured so that it can serve as a support, and also as a liquid collector." Chamber 22 is designed to be configured either in a fully extended configuration, as shown in Figure 7, or in a stowed configuration, as shown in figure 8. The stowed configuration can be adapted to obtain space efficiency during transport or at the point of sale, or to reduce the speed of water absorption, or both., the chamber is pleated, so that it has the ability to adopt a truncated or compressed shape, in the upper part of the housing. The first, second and third modalities are related to products of the type known in the packaging art as "doy bags" or "doy packs" (flexible bags or packages that can be kept standing). The modalities that will be described below do not have a "flexible" form, they all have a rigid form. Figures 9A-9B and 10A-10E show a fourth embodiment of the dehumidification product. This embodiment comprises a housing 26 in the shape of a well or tub, which has an upper entrance with a circular array 27.; and a chamber 28 containing the deliquescent agent. The housing 26 and the chamber 28 are of a circular appearance in plan view. The chamber 28 has an annular horizontal flange 30 extending outwardly around its periphery at one end. The housing 26 and the chamber 28 comprise plastic mounds. In the case of the chamber 28, the plastic molding comprises the flange 30, a circular band 32 at the other end of the chamber and several projections 34 in the middle. As can be seen clearly in Figures 9A-9B and 10A-10B, there are windows 36 between the aforementioned parts, and these are closed by a vapor permeable and liquid permeable material. In the stowed configuration shown in Fig. 9A, the chamber 28 is inside the housing 26. The rim 30 of the chamber lies on the frame 27 around the opening of the housing. To secure both together, a threaded ring 38 is secured to the housing. The ring 38 has a cylindrical grooved wall 39 and, orthogonal to and projecting inward from the wall, a clamping flange 40, for trapping the flange 30 of the chamber against, and around, the armature around; of.-the -.average- of the 'accommodation. In Figure 9A it will be appreciated that the wall of the chamber is apparently exposed to the external environment. To keep the product in optimum condition up to 0 at the time of its use, this surface is covered with a detachable foil 42, which can be better appreciated in Figure 10C. The steps required to configure the product for use with reference to FIGS. 10A-10E will now be described. The configuration, as the product is sold, is shown in Figure 10A. This corresponds to figure 9A which has just been described. To configure the product for use, the ring 38 is unscrewed and the housing chamber is lifted, Figure 10B. The foil 42 is then removed, Figure 10C. Then the camera is inverted and placed back in the housing, Figure 10D. However, this time it is not nested inside the housing, but it remains in a straight position from it. Then the ring is placed on the chamber and screwed onto the housing, once again trapping the flange 30 against the frame around the opening of the housing, figures 9 B, 10E. If desired, it is possible to replace a worn mattress with a spare, and at the same time the water is extracted from the housing The fifth mode, which will be described with reference to FIGS. 11A-11B and 12A-12B, is certain. similar to the fourth embodiment since it has generally rigid parts, mainly the housing 44 in the form of a well or tub, and a chamber 46 in the form of molded plastic but having windows 48 of vapor permeable material and permeable to the The main difference is that to move the camera to its operational configuration, it does not require its removal and inversion, but only requires a lifting operation.As best seen in figures 12A and 12B, camera 49 is topped by a fluted lid 50. In the stowed configuration, the lid is screwed onto a thread 52 formed on the outside of a top neck of the housing 44. Once the lid has been sufficiently If unscrewed, it can be lifted to raise the camera to the operative configuration. This remains there due to friction interference. As best seen in Fig. 11B, the lid is formed with a removable central upper f? I-e. The surface 54 can be removed by, for example, a watch buckle or a blade. The surface 54 is a simple snap fit within the lid. Once the surface 54 has been removed, access to the chamber is allowed. Therefore, it can be removed and replaced with a fresh camera. This is the moment when the water collected in the housing can be extracted. The sixth embodiment will now be described with reference to Figures 13A-13B and 14A-14B. This embodiment also comprises a generally rigid housing 56 and a generally rigid chamber 58, which has the ability to slide out of and into the interior of the housing 56. In this embodiment, the housing 56 and the chamber 58 have a generally oval shape in plan view. In particular, the chamber 58 is an oval section cylinder. As with the fourth and fifth embodiments, the chamber is a plastic molding but configured with windows 60 for a vapor permeable and liquid permeable membrane. The configuration as sold is that of Figure 13A. The camera is completely nested inside the room ..-. The outer wall of the chamber protrudes beyond the housing, however, this portion has opposite butterfly depressions 62 to facilitate the lifting of the chamber, to the position that is shown in Figures 13B and 14B.The chamber remains in this position due to frictional interference between the parts.As with other embodiments, the shumi agent diffuses inside the chamber to absorb water vapor. The liquid water begins to collect inside the chamber and migrates to the lower part of the chamber, where it can pass through a portion of the membrane (not shown) and drip into the interior of the housing 56.

Claims (11)

NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and, therefore, the content of the following is claimed as a priority: CLAIMS '

1. - A dehumidification product comprising a chamber containing a deliquescent agent at least partially bound by a vapor permeable membrane, and a housing; wherein the chamber has a configuration stowed substantially in or against the room, and an operative configuration where it is substantially not inside or against the housing, both the housing and the chamber are in the form of a f 1 ex ib1 e.

2. - The product of shumi d i f i falls in accordance with claim 1, characterized in that the housing is adapted to collect liquid dripping from the chamber.

3. - The product of shum i di f i falls in accordance with the rei indication 1 or 2, characterized in that the camera is isolated from the surrounding air when it is in its stowed configuration.

4. - The dehumidification product according to claim 3, characterized in that the chamber is held in a sealed manner inside the housing in the stowed configuration >

5. - The dehumidification product according to any of the preceding claims, characterized in that the housing is a doy pack (flexible packaging that can be kept standing).

6. - The dehumidification product according to the claim, .. 5 ,,. -ca racte-ríaado "because- the camera can" move in relation to the housing in one or more of the following ways: movement of translation; up and down relative to the housing, - fold movement; the camera is folded against a side wall of the housing.

7. - The dehumidification product according to any of the preceding claims, characterized in that the housing retains the chamber in the stowed configuration, and the chamber is lifted substantially out of the housing to its operative position.

8. A humidification equipment comprising a dehumidification product of the present invention, as defined above, of a type in which the chamber can be removed from the housing, and at least one chamber fresh containing a deliquescent agent, isolated from the surrounding air until required.

9. A method for absorbing water vapor from a place, preferably an enclosed place, the method comprises the steps. { in any order) to change a dehumidification product as claimed in any of claims 1 to 7 of its configuration - is-tibada-to its operational configuration, and b) to locate it in place.

10. - A dehumidification product or equipment substantially as described in the present invention with reference to the appended figures.

11. A method for absorbing water vapor has been substantially described in the present invention with reference to the figures and the description.