US20110030388A1 - Humidity control of an electrical device - Google Patents

Humidity control of an electrical device Download PDF

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Publication number
US20110030388A1
US20110030388A1 US12/438,034 US43803409A US2011030388A1 US 20110030388 A1 US20110030388 A1 US 20110030388A1 US 43803409 A US43803409 A US 43803409A US 2011030388 A1 US2011030388 A1 US 2011030388A1
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United States
Prior art keywords
cooling
heating element
enclosure
heating
water
Prior art date
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Abandoned
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US12/438,034
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English (en)
Inventor
Mikael Johansson
Torbjörn Nilsson
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Telefonaktiebolaget LM Ericsson AB
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Individual
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Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) reassignment TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NILSSON, TORBJORN, JOHANSSON, MIKAEL
Publication of US20110030388A1 publication Critical patent/US20110030388A1/en
Abandoned legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0042—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater characterised by the application of thermo-electric units or the Peltier effect
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0212—Condensation eliminators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof

Definitions

  • the invention relates to a device and a method for dehumidifying and control of humidity inside an enclosure comprising electrical equipment.
  • Electric equipment which is intended to be located where it might be exposed to humid environment or water is often protected by a waterproof enclosure.
  • a waterproof enclosure there might be small entrances, e.g. gaps, small holes or diffusive leakages, through which water might enter into the enclosure.
  • To make these cabinets completely waterproof is often a costly procedure and in many cases water, e.g. mist or humid air, may enter into the cabinet already when the product is brand new.
  • Even if the products are made completely waterproof they may be defect due to degradation at normal use, unexpected impacts or violence on the product or exposure to the environment, e.g. sun, wind and rain, which may lead to a degradation of the water proof protecting system so that water or humid air may enter into the cabinet.
  • the size of the cabinet intended to be dehumidified by the present invention may be in a wide range of varying sizes, e.g. from 2 to 500 litres (0.002 to 0.500 cubic metres). These sizes represent a large number of different low power dissipating equipment for which a long term corrosion protection is desired.
  • dehumidification or ventilation devices generally used in the field of dehumidification. These devices usually comprise some kind of active dehumidification unit, e.g. heating elements, fans and venting conduits, and are in general rather bulky and hard to fit into small spaces.
  • EP 368 382 describes a device for dehumidification of an enclosure comprising electrical equipment in which the moisture is removed from the inside of the enclosure.
  • a cooling element is located to be in contact with the air inside and condense dew from the inside air to be collected in a receptacle wherefrom it is allowed to be guided through a conduit out of the enclosure.
  • this device will probably not work very efficient unless there are quite large amounts of water to be condensed. In case there are small amounts of water to be condensed, there will most probably be a problem of transporting the condensed water to the outside.
  • the outlet conduit is too small, the water may adhere to the inside of the conduit due to capillary forces.
  • the conduit is too big, moisture in the form of humid air may enter into the enclosure from the outside.
  • the dehumidification unit which is still rather small to be fitted into the enclosure without any major modifications.
  • the dehumidification shall be able to work continuously without any necessary periodical maintenance work.
  • the dehumidification unit will allow the enclosure to not necessarily be completely water tight in all sealing so as to allow a greater freedom of design and avoiding a need of over duly precision in the manufacture of the enclosure and its connecting edges.
  • an improved dehumidification system which will work satisfactorily in transporting the condensed water from the inside to the outside of the enclosure.
  • the present invention provides an improved device and method in order to achieve a satisfactory dehumidification of the inside of an enclosure comprising electrical equipment so as to prevent corrosion due to water or mist present in the enclosure.
  • a dehumidifier comprising a heating element and a cooling element is mounted in connection with the enclosure in such a way that the cooling element is located to be in contact with the ambient air of the interior of the enclosure and the heating element is located to be in contact with the ambient air of the exterior of the enclosure.
  • the dehumidifier is further provided with water guiding means which guides dew condensed at the cooling element to the heating element so that humidity from the air, condensed at the cooling element, may be transported to the heating element to be vaporised there.
  • the water guiding means comprises a capillary structure.
  • This solution provides a simple arrangement for dehumidifying the air within a cabinet.
  • the invention may be used for all kind of electrical equipment contained in a box or the like.
  • One field of use may for example be base stations in a telecommunicating network.
  • the capillary structure is in contact with the heating element and adapted to guide water condensed at the cooling element to the heating element.
  • the capillary structure may for example be a mat.
  • capillary mat By using a capillary mat which is in contact with the heating element it will be possible to use the suction forces of the capillary mat to suck water to the heating element as water is vaporised at the same.
  • An advantage by using capillary forces for the transport of water is that such a distributing system can work without being obliged to transport water by the use of gravity or any kind of pumping equipment.
  • the water transport will mainly depend on the vaporisation rate which will free the capillaries at the heating element from water and thereby sucking new, condensed water to the heated capillaries.
  • capillary mat any kind of capillary structure which is able to suck a liquid by capillary forces.
  • the dehumidifier may be provided with a second part of the capillary mat which covers at least a part of the surface of the cooling element so as to absorb dew condensed at the cold side.
  • the first and second parts of the mat are connected to each other by water guiding means.
  • the water guiding means which connects the first part and the second part of the capillary mat may comprise a third part of the mat.
  • the three parts of the mat may be either separate pieces or one entity comprising different regions.
  • the dehumidifier comprises the second and third capillary mat.
  • this receptacle is located below the cooling element so that the water will drop into the receptacle by means of gravity.
  • the first capillary mat will then by capillary forces transport the collected water to the heating element whereby the dew is vaporised to the exterior of the enclosure.
  • the heating element and the cooling element are formed as one entity having a first surface and a second surface wherein the heating element is located at the first surface and the cooling element is located at the second surface.
  • the surfaces are made as ordinary, flat surfaces.
  • the element is preferably made as a relatively flat plate having the heating element and the cooling element located at opposite sides.
  • the plate may be provided with an insulation layer between the two sides.
  • surface is not necessary meant a flat, continuous structure but may for example on the micro structure scale comprise a porous structure, microfibers or fibers, wave shaped elements or of any desired shape having micro-structural irregularities.
  • the elements may be spherical, cylindrical, concave or convex, flat with holes in it or of other geometrical shapes.
  • the entity may comprise a peltier element which induces a heating element at one side and a cooling element at the other side.
  • This embodiment provides the advantage of having one element which naturally creates a heating element and a cooling element when it is powered by DC.
  • the third part of the capillary mat may be located at the outer side of the entity so as to guide water between the first part and the second part of the mat. This may be achieved by wrapping a capillary mat or structure around the entity (peltier element) so that the heating element, the cooling element and at least one edge part of the entity is covered by the mat. This provides an easy structure to produce and a relatively small element to be mounted to the enclosure.
  • the cooling and heating entity is provided with one or several holes connecting said first, heating surface and said second, cooling surface.
  • water may be guided from a first part of the mat located at one side through the holes to a second part of the mat located at the second side of the mat.
  • a desired number of holes are preferably provided with a third part of the capillary mat in order to facilitate the transport of water from the cold side to the hot side.
  • the cold side with a capillary mat so as to absorb the condensed water in order to avoid water to drip from the cooling element and thus remain in the enclosure.
  • the invention has been described as comprising a single element comprising both the heating element and the cooling element. It shall be noted that the principle of the invention will also work if the heating and cooling elements are separate units which are located at different locations. This might be favourable in view of constructional aspects in certain applications and also have the benefit of better isolating the heat and cold sources. However, in most applications, the combination of the heating and cooling elements as one entity will have the benefit of a compact and simple design with a short distance for transport of water between the elements.
  • the dehumidifier may be located at different locations in or in connection to the enclosure.
  • the heating element and the cooling element are mounted in or adjacent to an outer wall of the enclosure.
  • the heating and cooling elements are constructed as one entity, having its cooling side on the opposite side of the heating side, the element is preferably incorporated as a part of an outer wall of the enclosure, having its cooling element on the inside and its heating side on the outside.
  • the heating element and the cooling element may be mounted inside the enclosure whereby said heating element is connected to the outside of the enclosure via an air vent duct.
  • the air vent duct should be tight to not allow the air leaving the enclosure to be in contact with the inside air of the enclosure.
  • heating element and the cooling element are provided as different entities, it is of course possible to locate them at different locations, e.g. to locate the condensing element in the interior of the enclosure and the heating element adjacent to the wall in such a way that moisture will vaporise directly in the air exterior to the enclosure.
  • the present invention provides a dehumidification arrangement which is essentially maintenance free and can be fully automated in respect of humidity control and power consumption. Furthermore, the inventive arrangement will work without any moving parts and will be silent which makes it particularly suitable for all kind of domestic appliances or any kind of devices where a low level of noise is desired. Due to its simplicity, the arrangement will provide a reliable arrangement with little risk of failure or break down. The arrangement can also easily be scaled with respect to the size of to the enclosure and the drying capacity needed. Due to its relatively small size, the arrangement can easily be mounted on and integrated in existing enclosures with no or less efficient dehumidification devices. In the case of a compact, plate shaped heat and cooling device, e.g. a peltier element, it may be mounted in an outer wall or a lid for the enclosure and can easily be fitted to the enclosure by replacing the original wall or lid.
  • a shaped heat and cooling device e.g. a peltier element
  • the dehumidification unit may be provided, if desired, with additional features such as a hygrostat in order to only be active when the humidity is above a certain level.
  • the device may also be provided with a fan.
  • a fan such equipment will make the dehumidifier more complex and space requiring and is not required for most applications. If applied, the fan should usually not provide a strong flow of the air but rather a gentle mixing or stirring of the air inside so as to provide transport of humid air to the vicinity of the cooling element.
  • the invention could be useful for the reverse function, i.e. if the heating and cooling elements are switched.
  • the cooling side and the heating side can easily be switched by changing the poles of the electricity.
  • a peltier element which is located in or near the wall could condense water from the outside and vaporise it on the inside in order to humidify the air inside the enclosure.
  • the invention may be used to control the humidity of the interior air of the enclosure to be within a desired interval.
  • the invention further relates to a humidity control process for an enclosure comprising electrical equipment, said humidity control process comprising the steps of:
  • the humidity control process is the condensed water transported for at least a part of its way from the cooling element to the heating element by means of capillary forces.
  • the humidity control process which is mainly intended to be operated in order to dehumidify the air inside an enclosure, may also be used for the reversed function, i.e. to humidify the air inside the enclosure.
  • This may be achieved in an easy way by switching the functionality of the heating element and the cooling element so that the flow of water may be reversed so as to humidify the air of the interior of the enclosure.
  • the humidity control process preferably comprises a hygrometer which measures the humidity in the air and control the system to dehumidify the air when the moisture content of the air is above a certain level and reverse the function to humidify the air when the moisture content is below a certain value.
  • An easy way of changing the functionality of the heating and cooling element is to use a peltier element, which comprises both elements, and change the poles of the current.
  • FIG. 1 An enclosure for electric equipment comprising a dehumidifier
  • FIG. 2 a A schematic view of the positioning of a heating and cooling element according to a first embodiment of the invention
  • FIG. 2 b A schematic view of the positioning of a heating and cooling element according to a second embodiment of the invention
  • FIG. 2 c A schematic view of the positioning of a heating and cooling element according to a third embodiment of the invention
  • FIG. 2 d A schematic view of the positioning of a heating and cooling element according to a fourth embodiment of the invention
  • FIG. 3 A schematic view of a dehumidifying element
  • FIG. 4 A schematic view of the water transport in the element in FIG. 3 when in use
  • FIG. 5 A schematic view of a variant of the embodiment of the dehumidifying element in FIG. 3
  • FIG. 6 a A second embodiment of a dehumidifying element
  • FIG. 6 b A first version of the embodiment of the dehumidifying element shown in FIG. 6 a
  • FIG. 6 c A second version of the embodiment of the dehumidifying element shown in FIG. 6 a
  • FIG. 7 A dehumidifying element comprising a peltier element
  • solid arrows when not associated with a number indicate the flow of water or condensed humidity, i.e. water in liquid state. Dashed arrows indicate the flow of humid air or mist, i.e. the flow of water in a gaseous state.
  • FIG. 1 is a simple schematic overview of the intended use of a dehumidifier 2 and shows an enclosure 1 for an electric equipment (not shown) comprising a dehumidifier 2 which is located in an outer wall 13 of the enclosure.
  • FIG. 2 as FIG. 1 only shows a very brief general overview, a more detailed description of the dehumidifying arrangement is shown, exemplifying different ways of locating the different parts of the dehumidifier in the casing and how they are connected.
  • FIGS. 2 a - d discloses four different ways of placing the heating element 3 and the cooling element 4 in an enclosure 1 is shown schematically.
  • FIG. 2 a it is shown that the heating element 3 and cooling element 4 are constructed as one entity and located in the outer wall 2 of an enclosure.
  • the cooling element 4 is located on the outside, or forming the outside, of the outer wall.
  • the heating element 3 is located on the inside, or forming the inside, of the outer wall 2 .
  • the moisture in the air inside the enclosure 1 will condense at the cooling element 4 and be transported to the heating element on the outside of the outer wall 2 and thereby be vaporised.
  • the mechanism of transporting the condensed water from the cooling element to the heating element in this case will make use of a capillary structure which will be shown and explained in association with other figures.
  • FIG. 2 b another design of the dehumidifier is shown.
  • the heating element 3 and the cooling element 4 are still constructed as one single entity but is located inside the enclosure 1 .
  • the heating element 3 is protected from the air inside the enclosure 1 by a casing 14 which is connected to an air ventilation duct 13 .
  • the casing 14 of course also protects the interior air of the casing 1 to come in contact with air exterior to the casing so as to prevent humidity in fresh air to enter into the enclosure 1 . Except for guiding the air through the air ventilation duct 13 instead of releasing it directly to the fresh air as described in FIG. 2 a , this configuration works according to the same principle as described therein.
  • the heating element 3 and the cooling element 4 are separate units. It is therefore necessary to include some kind of water conduit 5 for transporting the condensed water from the cooling element 4 to the heating element 3 .
  • the heating element 3 is located inside the enclosure 1 and is protected from the air inside by a casing 14 .
  • the heating element 3 When the condensed water reaches the heating element 3 , the water will be vaporised and released into the exterior of the enclosure through ventilation holes in the outer wall 12 at the part of the wall where the casing 14 function as a protective shield for the surrounding air to enter into the enclosure 1 .
  • the heating element could also be located at the outside of the outer wall 12 and thereby eliminate the need of having a casing 14 which shields the heating element 3 from the air inside the enclosure 1 . If desired, the elements could be located the reverse way also.
  • the heating element 3 and the cooling element 4 are separate units as described in FIG. 2 c and a water conduit 5 transports water between the elements.
  • This configuration differs from the one described in FIG. 2 c in that the cooling element is located inside the enclosure 1 (not adjacent to the outer wall 12 ). It is therefore included an air ventilation duct 13 , connected to a casing 14 enclosing the heating element 3 , which guides the vaporised water in to the open air.
  • FIGS. 2 a - 2 d it is not in detail described how the water is transported between the cooling and heating element.
  • the connecting may be an ordinary water conduit or a capillary column for example. Examples of how the transportation of water can be arranged when the elements are constructed as one entity will be described below.
  • FIGS. 3-7 shows more in detail different embodiments of how the heating and cooling elements forming part of the dehumidifier may be designed as one entity.
  • FIGS. 3 and 4 a first embodiment of such an element is shown where this entity is formed by a compact heating-cooling core surrounded by a water guiding material.
  • the element shown in FIG. 3 comprises a heating element 3 , a cooling element 4 and water guiding means in the form of a capillary mat 6 a - 6 c so as to form one heating and cooling entity 7 comprising all elements needed for condensing, transporting and vaporising water.
  • the capillary mat 6 is divided into 3 parts whereof the first part 6 a is in contact with the surface 8 of the heating element 3 , the second part of the capillary mat 6 b is in contact with the surface 9 of the cooling element 4 and the third part of the mat 6 c is connecting the first part 6 a and second part 6 b of the mat.
  • the third part of the mat 6 c is only connecting the other parts of the mat 6 a , 6 b at one edge part of the heating and cooling entity 7 .
  • the capillary mat 6 could of course cover one or several more of the edges so as to increase the connection between the first and second parts 6 a , 6 b .
  • the mat must not cover the complete surface but may also cover a part, being provided with holes or forming strips so as to reveal a part of the heating or cooling surfaces.
  • FIG. 4 it is shown how the cooling and heating entity 7 will work during use.
  • Moisture from the air within the enclosure will condense on the capillary mat 6 at the part of the mat 6 b which is located at the cold surface 9 of the cooling element 4 .
  • the mat 6 will absorb the moisture which will be spread in the mat 6 due to capillary forces which strive to reach equilibrium of humidity in the mat 6 and moisture will start to travel towards the dry parts of the mat.
  • the liquid will start to move from the part of the mat located at the cold side 6 b towards the part of the mat located at the hot side 6 a via the connecting part 6 c .
  • the heating element 3 Due to the heating element 3 , moisture which has reached the part of the mat 6 a located at the hot surface 8 of the heating element 3 will start to vaporise. The vaporisation will make this part of the mat 6 a dryer than the other parts of the mat 6 a , 6 b so that there will be a continuous stream of water or moisture towards the hot side of the element 7 . To be accurate, the stream of water will continue as long as the relative humidity is lower at the hot side than on the cold side. Due to the temperature difference between the hot and cold side of the element, the absolute humidity in the air on the hot side may be larger than on the cold side while the relative humidity on the cold side will be higher due to the fact that hot air may be more humid before condensing.
  • the dehumidifying system may be provided with an arrangement which measures the humidity in the enclosure, e.g. a hygrometer, which is connected to a switch which turns on and off the dehumidifier depending on the humidity, i.e. a hygrostat.
  • the switch may also measure the humidity inside and outside the device since there is a risk that humidity may enter into the enclosure through this arrangement when there is a higher relative humidity outside than inside.
  • the device may automatically switch on when the relative humidity is higher outside than inside. This problem could also be adjusted by some other preventive mechanism, e.g. some kind of mechanical arrangement which closes the possibility of water to enter into the enclosure.
  • some other preventive mechanism e.g. some kind of mechanical arrangement which closes the possibility of water to enter into the enclosure.
  • the heating and/or cooling elements not must be completely switched on or off but may have a variable effect either changed step less or by predefined steps to achieve a desired effect and thereby a controlled humidity in the enclosure.
  • this arrangement provides an easy way for changing the flow of moisture to work in the opposite direction.
  • the only thing which is needed to be done is to switch the heating element and the cooling element. An easy way of doing such a switch will be discussed more in detail in association with FIG. 7 .
  • FIG. 5 an alternative embodiment is shown.
  • humidity in the air condenses at the cold surface 9 of the cooling element 4 in such a way that droplets 16 will merge on the cold surface. Due to gravity, the droplets 16 will travel downwards to be collected in a receptacle 15 . At the other end of the receptacle, it is in contact with a capillary mat 6 .
  • This capillary mat consists of a major part 6 a which is in contact with the surface 8 of a heating element 3 . Hence, the condensed water will travel through the capillary mat 6 to the heating element where it is vaporised and released into the open air.
  • this embodiment will probably work better when there is a relatively large amount of moisture from the air to be condensed. Small droplets tend to stick to the cold wall and will not start to fall down until they have reached a certain size.
  • the capillary mat only covers the surface of the heating element and having a part of it reaching into the receptacle so as to be able to suck water from the receptacle to the heating element by capillary forces.
  • hygroscopic pressure is larger outside than inside, water will start to travel from the outside to the inside, however, water coming to the inside will accumulate in the receptacle 15 and thus create a high hygroscopic pressure relatively quick resulting in the undesired flow of water from the outside to the inside will stop.
  • the capillary mat could of course continue all the way and cover the lower edge part of the heating and cooling entity 7 .
  • FIG. 6 a shows a perspective view of a heating and cooling entity 7 which is shaped as an essentially flat plate having a heating element 3 located at one side and a cooling element 4 located at the opposite side is provided with holes 10 .
  • FIG. 6 b which is an intersectional view of the heating and cooling entity 7 in FIG. 6 a , the holes 10 are provided with a capillary mat 6 which forms capillary columns 11 so as to connect the hot side 3 with the cold side in order to transport water condensed at the cold side 4 to be vaporised at the hot side 3 .
  • FIG. 6 c shows an intersectional view of the element described in FIG. 6 a in which the element 7 has been provided with a capillary mat 6 on the hot side 3 and the cold side 4 as well as in the holes 10 .
  • condensed water at the cold side 4 will absorb into the mat 6 b at the cold side, be transported by capillary forces through the part of the mat 6 c located in the holes so as to form a capillary column 11 .
  • the water will be vaporised from the part of the capillary mat 6 a located at the hot side 3 of the cooling and heating entity so that water will be dragged from the cold side 4 to the hot side 3 .
  • FIGS. 6 b and 6 c A combination of the embodiments shown in FIGS. 6 b and 6 c is also possible, i.e. only one of the sides is fully or partly covered by a capillary mat.
  • FIG. 7 is described how the heating and cooling elements of a compact designed entity as described in FIGS. 3-6 may be made and the heating and cooling entity 7 comprising a heating side 3 and a cooling side 4 is exemplified as a peltier element 17 .
  • the element 17 comprises an anode connection 18 and a cathode connection 19 .
  • the connections 18 , 19 When there is a DC current applied to the connections 18 , 19 , the element will start to work and the sides 3 , 4 of the element 17 will start to get hot respectively cold.
  • the poles may be changed. By doing this, the cold side and hot side will switch.
  • the inventive concept of the idea does not only provide an efficient dehumidification device but also an efficient humidity controller.
  • the system may be provided with a hygrostat and means for alternating the current depending on the value of the hygrostat.
  • the element in contact with the interior of the enclosure will be the cold side and thereby condensing water which will be guided to the outside.
  • the poles may be changed and the element will condense water on the outside and transport it to the inside where it is vaporised.
  • Such an arrangement is in particular suitable for the embodiments where both sides are equally designed, e.g. the embodiments shown in FIGS. 3 , 4 and 6 .
  • the embodiment shown in FIG. 5 will not work equally efficient in both directions and is more suitable to be used only as a dehumidification device.
US12/438,034 2006-09-01 2006-09-01 Humidity control of an electrical device Abandoned US20110030388A1 (en)

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PCT/EP2006/065920 WO2008025377A1 (en) 2006-09-01 2006-09-01 Humidity control of an electrical device

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US (1) US20110030388A1 (ja)
EP (1) EP2057421A1 (ja)
JP (1) JP4938851B2 (ja)
CN (1) CN101506590B (ja)
WO (1) WO2008025377A1 (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US20160289478A1 (en) * 2013-11-27 2016-10-06 Genes'ink Sa Dispersions Of Silver Nanoparticles
EP3059716A4 (en) * 2013-10-16 2017-05-17 Proytecsa Security. S.L. Device for detecting intrusion on security fences
US11472264B2 (en) * 2018-03-07 2022-10-18 Gogoro Inc. Apparatuses for controlling environmental conditions and associated methods

Families Citing this family (11)

* Cited by examiner, † Cited by third party
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DE102009008233B4 (de) * 2009-02-10 2016-02-11 Dr. Neumann Peltier-Technik Gmbh Entfeuchter zur Raumentfeuchtung
KR101114584B1 (ko) * 2009-09-17 2012-04-13 갑을오토텍(주) 자동차 시트 냉난방 장치
DE102009054921B4 (de) * 2009-12-18 2020-09-03 Robert Bosch Gmbh Verfahren und Vorrichtung zur Minderung der Feuchtigkeit eines Gases in einem Batteriegehäuseinnenraum
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DE102011082757A1 (de) * 2011-09-15 2013-03-21 Siemens Aktiengesellschaft Gehäuse
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CN105435594A (zh) * 2014-09-30 2016-03-30 观致汽车有限公司 除湿设备
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5575835A (en) * 1995-08-11 1996-11-19 W. L. Gore & Associates, Inc. Apparatus for removing moisture from an environment

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499736A (en) * 1983-12-08 1985-02-19 Sperry Corporation Dehumidifier apparatus for disk drives
JP2569343B2 (ja) * 1987-11-18 1997-01-08 船井電機株式会社 テレビジョン信号受信装置
US4905706A (en) * 1988-04-20 1990-03-06 Nippon Colin Co., Ltd. Method an apparatus for detection of heart disease
JPH03161011A (ja) * 1989-11-20 1991-07-11 Toshiba Corp 防湿庫
JP2586232B2 (ja) * 1991-03-30 1997-02-26 日新電機株式会社 電子冷却装置
JPH06121910A (ja) * 1992-10-12 1994-05-06 Giichi Terasawa 湿度調整器
JPH07204447A (ja) * 1994-01-24 1995-08-08 Aisin Seiki Co Ltd 保管庫
CN2207014Y (zh) * 1994-08-31 1995-09-06 童尧 除湿器
FR2740540B1 (fr) * 1995-10-26 1998-01-09 Huyghe Daniel Procede pour deshumidifier l'air dans une enceinte confinee, et dispositifs de deshumidification correspondants
JPH1065377A (ja) * 1996-08-23 1998-03-06 Nissin Electric Co Ltd 電子冷却装置
KR20030054078A (ko) * 2001-12-24 2003-07-02 손석곤 냉온소자를 이용한 캐비넷형 제습장치
KR100450900B1 (ko) * 2002-08-08 2004-10-01 박노성 열전모듈 유니트를 이용한 붙박이장의 제습장치
EP1546619A1 (en) * 2002-08-22 2005-06-29 Ec Tech Co., Ltd. Heat exchange unit including apparatus to remove condensed water
JP4518884B2 (ja) * 2004-09-08 2010-08-04 アズワン株式会社 除湿器及びその制御方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5575835A (en) * 1995-08-11 1996-11-19 W. L. Gore & Associates, Inc. Apparatus for removing moisture from an environment

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140251322A1 (en) * 2011-11-01 2014-09-11 Intersurgical Ag Breathing systems
US9669181B2 (en) * 2011-11-01 2017-06-06 Intersurgical Ag Breathing systems
EP2595463A1 (en) * 2011-11-17 2013-05-22 ABB Oy Method and arrangement for reducing the amount of condensed moisture inside an enclosure for electrical equipment
CN103124489A (zh) * 2011-11-17 2013-05-29 Abb有限公司 用于减少电气设备罩壳内的冷凝的水分的量的方法和装置
US9247671B2 (en) 2011-11-17 2016-01-26 Abb Oy Method and arrangement for reducing the amount of condensed moisture inside an enclosure for electrical equipment
US20130321989A1 (en) * 2012-05-29 2013-12-05 Fujitsu Limited Base station
US9215822B2 (en) * 2012-05-29 2015-12-15 Fujitsu Limited Base station
EP2728289A1 (en) * 2012-10-31 2014-05-07 ABB Oy Arrangement for removing water from an equipment space
US9528763B2 (en) 2012-10-31 2016-12-27 Abb Technology Oy Arrangement for removing water from an equipment space
EP3059716A4 (en) * 2013-10-16 2017-05-17 Proytecsa Security. S.L. Device for detecting intrusion on security fences
US20160289478A1 (en) * 2013-11-27 2016-10-06 Genes'ink Sa Dispersions Of Silver Nanoparticles
US11472264B2 (en) * 2018-03-07 2022-10-18 Gogoro Inc. Apparatuses for controlling environmental conditions and associated methods

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JP2010502020A (ja) 2010-01-21
EP2057421A1 (en) 2009-05-13

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