JP2010094609A - Adsorbent module and dehumidifying/humidifying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adsorbent module which help simplify and miniaturize a device configuration and can supply humidified air at a stabilized humidity level, as well as a dehumidifying/humidifying device which can make humidity controlling of an indoor air in a vehicle etc. with the help of the adsorbent module. <P>SOLUTION: This adsorbent module (1) includes a Peltier element (30) which functions as a thermal source part for adsorption and a heat source part for desorption, and a first and a second adsorption elements (3A) and (3B) which are arranged directly on each plate surface. In addition, not less than two different adsorbents with a differing relative vapor pressure which becomes an inflection point of an adsorption isothermic line at an identical measured temperature, are applied to a ventilation element (33) of the adsorption elements (3A) and (3B). Further, the dehumidifying/humidifying device is constituted in such a way that a blower, the adsorbent module and a flow path switching device are accommodated in that order. Also, the device is constituted so that the thermal source part and the heat source part of the Peltier element (30) are switched by reversing electric current running through the Peltier element (30) of the adsorbent module, and the diverting destination of the air passing through the first and the second adsorption element of the adsorbent module, is switched by the flow path switching device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an adsorbent module and a dehumidifying / humidifying device, and more specifically, an adsorbent module for dehumidifying / humidifying air by an adsorbent adsorbing / desorbing function, and a vehicle interior using the adsorbent module, for example. The present invention relates to a dehumidifying / humidifying device for adjusting humidity.

  As one of the air conditioning technologies for vehicle interiors, various dehumidifying / humidifying devices (humidity adjusting devices) using the water vapor desorption function of the adsorbent have been studied in order to make the vehicle interior more comfortable and save energy. As such a device, for example, in summer, in order to save energy of the cooling air conditioner (cooler) and supply dehumidified comfortable air to the occupant side, it is partitioned into two series of air passages and both ends are There has been proposed an “air conditioner” in which a heat exchange section and a moisture absorbing member (adsorption element) are sequentially arranged so as to straddle two air passages with respect to an air flow path that is an intake port and an exhaust port.

  In the above air conditioner, the air passing through one air passage is cooled by the heat exchange unit, the air passing through the other air passage is heated, and the moisture absorbing member (adsorption element) is placed between the two air passages. The adsorption and desorption operations are repeated by rotating or swinging at, and dehumidified air is supplied into the room through one air passage, and the humid air is discharged outside through the other air passage. In addition, the heat exchanging unit is configured by disposing a heat conducting unit in each of the heat absorbing unit (adsorption cold heat source unit) and the heat radiating unit (desorption heat source unit) of the Peltier element, Cooling by the heat conducting part on the heat absorbing part side, and heating the air in the other air passage by the heat conducting part on the heat radiating part side of the Peltier element, it is necessary for cooling and desorption for adsorption promotion to the moisture absorbing member It is designed to supply heat and heat. In addition, the dehumidifying / humidifying device as described above blows the dehumidified air for defogging the window glass in winter, for example, by switching the flow path connected to the air outlet (intake port and exhaust port). In addition, the humidified air can be blown to the passenger side to improve comfort (see Patent Document 1).

  On the other hand, as a means for simplifying the device configuration of the dehumidifying / humidifying device and further reducing the size, an adsorbent module in which an adsorbing element (a hygroscopic member) and a Peltier element are directly combined has been proposed. In such an adsorbent module, a pair of fixed adsorbing elements carrying adsorbents are directly arranged on a pair of plate surfaces functioning as an adsorption heat source part and a desorption heat source part of the Peltier element, respectively, The first adsorption element is directly cooled (or heated) to promote the adsorption (or desorption) of water vapor, and at the same time, the second adsorption element is directly heated (or cooled) to desorb (or heat) the water vapor, In the first and second adsorbing elements, dehumidified air (or humidified air) and humidified air (or dehumidified air) are obtained (see Patent Document 2).

  On the other hand, in a dehumidifying / humidifying device for a vehicle, when the humidified air obtained by the heat desorption operation is used to improve indoor comfort (for example, prevention of dry skin, prevention of dry eyes, etc.) When the material reaches the desorption temperature, a phenomenon occurs in which a large portion of the adsorbed water vapor is rapidly desorbed in a short time, so high-humidity humidified air can be blown at the beginning of desorption. There is a problem that the humidity is reduced. In other words, when humidified air is supplied to the occupant side, there is a phenomenon that the humidity of the supplied air is not stable. As one method for supplying air of stable humidity, a technique using two or more types of silica gel for an element having a water vapor adsorption ability has been proposed as a “functional element for dehumidification or heat exchange” (Patent Literature). 3).

JP 2000-146220 A JP 2008-1000014 A JP 2002-001106 A

  By the way, in an adsorption module applied to a dehumidifying / humidifying device for a vehicle, the use of two or more kinds of adsorbents makes use of the difference in the characteristics of the adsorbents to change the humidity of the air supplied indoors. In terms of mitigation, it is considered an effective means. However, when two or more types of silica gel are used as the adsorbent, in practice, for example, a sufficient adsorption / desorption amount cannot be obtained in a narrow temperature range set as the room temperature in the passenger compartment. It is difficult to maintain the room at a comfortable humidity. Moreover, since the durability of silica gel itself is poor, it cannot be sufficiently applied to a dehumidifying / humidifying device that requires repeated adsorption / desorption.

  Thus, the inventors further studied the technology of using the Peltier element and the technology of combining two or more adsorbents, and examined supplying air with more stable humidity by the adsorption module. An object of the present invention is an adsorbent module that dehumidifies and humidifies air by using an adsorption / desorption function of an adsorbent by using a Peltier element as a heat source / cold heat source, the apparatus configuration can be simplified and miniaturized, An object of the present invention is to provide an adsorbent module that can supply humidified air with stable humidity, and a dehumidifying / humidifying device that uses the adsorbent module to adjust humidity in a vehicle compartment, for example.

  In order to solve the above problems, in the present invention, an adsorption material for adsorbing water vapor is applied to a ventilation element which is a ventilation structure provided with a large number of ventilation holes such as a corrugated type, a honeycomb type, and a lattice type. An adsorbent module is constructed by directly combining one of these adsorbing elements with a Peltier element, and the adsorbent of each adsorbing element has a low relative vapor pressure as an inflection point of the adsorption isotherm And at least one of these adsorbents, preferably at least two of these adsorbents, are used as zeolites. Thus, during the desorption operation by heating in a narrow temperature range, the water vapor was surely desorbed stepwise in accordance with the temperature change of the adsorbent, and the humidity was made uniform in the resulting humid air.

  That is, the first gist of the present invention is that a Peltier element having a pair of plate surfaces each functioning as an adsorption cooling heat source unit and a desorption heat source unit, and a Peltier element directly disposed on each plate surface of the Peltier element. An adsorbent module comprising one adsorbing element and a second adsorbing element, wherein the first and second adsorbing elements include a ventilation element in which a plurality of ventilation holes are provided in parallel and in parallel, and the ventilation element Two or more kinds of adsorbents having different relative vapor pressures serving as inflection points of the adsorption isotherm at the same measurement temperature, and the adsorbent for water vapor adsorption applied to The adsorbent module is characterized in that at least one of these adsorbents is zeolite.

  The second gist of the present invention is a dehumidifying / humidifying device that dehumidifies and humidifies air using the adsorbent module described above, wherein a blower, an adsorbent module, and a flow path switch are provided in a main body casing as an air flow path. The main body casing includes a first air outlet for blowing dehumidified (or humidified) air and a second air outlet for blowing out humidified (or dehumidified) air. The adsorbent module is disposed in the main body casing such that air sent by the blower can pass through each adsorbing element, and the flow path switching device includes the first and second of the main body casing. The air that has passed through the first adsorbing element and the air that has passed through the second adsorbing element of the adsorbent module can be diverted separately from each other, and the diversion destination can be switched. Then, the current flowing through the Peltier element in the adsorbent module is reversed to replace the adsorption cold heat source part and the desorption heat source part of the Peltier element, and each air according to the reversal of the current in the flow path switching device. It exists in the dehumidifying / humidifying device characterized by switching so that it may direct to.

  According to the adsorbent module of the present invention, each adsorbing element is directly arranged on each plate surface of the Peltier element that functions as an adsorption cooling heat source and a desorption heat source, and each reversal of the current flowing to the Peltier element Since the adsorption operation and desorption operation of the adsorption element can be switched, there is no need to provide a drive unit, and since the thermal conductivity between the Peltier element and the adsorption element when heating and cooling the adsorption element is high, the module Further downsizing can be achieved. Then, two or more kinds of adsorbents having different relative vapor pressures serving as inflection points of the adsorption isotherm at the same measurement temperature are applied to the ventilation element of each adsorption element, and at least one kind of the adsorbent is zeolite. During the operation, water vapor can be desorbed stepwise according to the temperature change of the adsorbent, so that humid air with stable humidity can be obtained.

  In addition, according to the dehumidifying / humidifying device of the present invention, each adsorbing element is directly arranged on the Peltier element and is configured using the adsorbent module in which a specific adsorbent is applied to each adsorbing element. The apparatus configuration can be simplified, the entire apparatus can be further reduced in size, and humidified air with stable humidity can be supplied.

  Embodiments of an adsorbent module and a dehumidifying / humidifying device according to the present invention will be described with reference to the drawings. FIGS. 1 and 2 are perspective views of the adsorbent module according to the present invention, and FIGS. 5 to 8 are cross-sectional views showing examples of the adsorbent application structure in the adsorbing element of the adsorbent module. FIG. 9 is a water vapor adsorption isotherm showing the adsorption characteristics of the adsorbent suitable for the present invention. Moreover, FIGS. 10-13 is a figure which shows the structural example of the dehumidification / humidification apparatus which concerns on this invention.

  First, the adsorbent module of the present invention will be described. The adsorbent module of the present invention is used in a dehumidifying / humidifying device for dehumidifying and humidifying indoor air. The adsorbent module described above does not require a drive mechanism and has high thermal efficiency, and thus is particularly suitable for a relatively small device such as a dehumidifying / humidifying device that dehumidifies and humidifies air in the vehicle compartment.

  The adsorbent module of the present invention comprises a Peltier provided with a pair of plate surfaces (30a) and (30b) that respectively function as a cooling heat source for adsorption and a heat source for desorption, as indicated by reference numeral (1) in FIGS. A first adsorbing element (3A) comprising an element (30) and a ventilation element (33) carrying an adsorbent and arranged directly on each plate surface (30a) and (30b) of the Peltier element (30). And the second adsorption element (3B).

  The adsorbent module (1) may be formed in a flat rectangular parallelepiped as shown in FIGS. 1 and 2, or may be formed in a shape having a curved surface according to the structure of the device to be applied. In the adsorbent module (1), the first adsorbing element (3A) and the second adsorbing element (3B) are air layers relative to the plate surfaces (30a) and (30b) of the Peltier element (30). It is only necessary that the heat and cold generated by the Peltier element (30) be transmitted by heat conduction without any heat insulation elements such as other mechanical parts, such as silver paste and grease. It may be arranged via.

  In the adsorbent module (1), the Peltier element (30) is an element using the Peltier effect, as is well known, and an electronic component used as a cooling device for electronic devices such as computers. That is, in the Peltier element, a large number of P-type semiconductors and N-type semiconductors are arranged between two types of metal plates, and one metal plate forms an NP junction and the other metal plate forms a PN junction. In such an element, heat is transferred by passing an electric current through the PN junction, an endothermic phenomenon occurs in one metal plate, and a heat dissipation phenomenon occurs in the other metal plate.

In the adsorbent module (1) of the present invention, in order to further reduce the size, each plate surface (30a), (30b) functions as a cooling heat source for adsorption and a heat source for removal, for example, a flat Peltier element (30 ) Is used. For example, when used in a vehicle dehumidifying / humidifying device, the power consumption of the Peltier element (30) is 1.4 to 120 W, the maximum heat generation temperature is 80 to 90 ° C., and the maximum temperature difference is 64 to 83 ° C. In the present invention, in designing the Peltier element (30), the heat dissipation capacity (W ₁ ) and the heat absorption capacity (W ₂ ) required for the Peltier element are calculated based on the following equations.

  The first adsorbing element (3A) and the second adsorbing element (3B) are designed to have the same specifications, but the adsorbing element (3) as the first and second elements has a large number of ventilation holes (ventilation). (Cell) is constituted by a ventilation element (33) provided in parallel and in parallel, and an adsorbent for water vapor adsorption applied to the ventilation element. That is, the adsorption element (3) is configured by applying an adsorbent to each ventilation hole of the ventilation element (33). Usually, the outer shape of the adsorption element (3) is formed in a flat box shape so as to be accommodated in a vehicle dehumidifying / humidifying device or the like. Of course, you may form in the shape containing a curved surface according to the shape of application apparatuses, such as a dehumidification / humidification apparatus. The adsorption element (3) accommodates the ventilation element (33) in a metal casing in order to efficiently transfer heat (hot and cold) between the ventilation element (33) and the Peltier element (30). Configured.

  As the ventilation element (33), various structures can be used as long as the downsizing can be achieved and a large adsorption area can be secured and a larger amount of powdery adsorbent can be held. As the structure of the ventilation element (33), for example, a so-called corrugated type in which the opening shape of the ventilation hole is formed in a substantially triangular shape by a corrugated base sheet, and the opening shape of the ventilation hole is approximately six. Examples of the ventilation structure include a honeycomb type formed in a square shape and a lattice type in which the opening shape of the ventilation holes is formed in a square shape. Moreover, in order to reduce the pressure loss of the air which passes, the structure in which the opening shape of the vent hole was formed in the other polygon may be sufficient.

  For example, as shown in FIG. 1, the corrugated ventilation element (33) is formed by alternately laminating a base sheet formed in a substantially corrugated plate shape and a base sheet formed in a substantially flat plate shape. It consists of many. That is, the ventilation element (33) of the adsorption element (3) is a plate surface of the Peltier element (30) in which the honeycomb sheet in which one row of cells is formed by overlapping the corrugated base sheet on the flat base sheet. (30a), (30b) a plurality of adjacently arranged structures, in other words, the substantially flat substrate sheet of each honeycomb sheet is the plate surface (30a), (30b) of the Peltier element (30). The vent holes are connected to each convex part of the corrugated base sheet and the adjacent flat base sheet, so that the vent element end face side The opening shape (on both end surfaces in the ventilation direction) is formed in a substantially triangular shape.

  Further, the corrugated ventilation element (33) may be configured as shown in FIG. The ventilation element (33) shown in FIG. 2 is a plate surface (30a) of the Peltier element (30), in which a honeycomb sheet in which one row of cells is formed by overlapping a corrugated base sheet on a flat base sheet. A structure in which a plurality of adjacently arranged in a state orthogonal to (30b), that is, a structure in which the honeycomb sheet is arranged along the plate surfaces (30a) and (30b) of the Peltier element (30) is provided. . In other words, the ventilation element (33) has a structure in which the substantially flat base sheet of each honeycomb sheet is arranged in a state orthogonal to the plate surfaces (30a) and (30b) of the Peltier element (30). Yes.

  As described above, when an element in which the honeycomb sheet of the ventilation element (33) is arranged perpendicular to the plate surfaces (30a) and (30b) of the Peltier element (30) is used as the adsorption element (3). Can uniformly and efficiently transmit the heat and cold of the Peltier element (30) to each honeycomb sheet constituting the ventilation element (33) of the adsorption element (3), and heating by the Peltier element (30) The cooling effect can be further enhanced.

  The honeycomb sheet used for the ventilation element (33) of the adsorbing element (3) as shown in FIGS. 1 and 2 described above is obtained by alternately laminating two types of substrate sheets having different lengths, It can be manufactured by a so-called honeycomb molding machine that joins the material sheets at a constant interval while pulling the material sheets. At that time, the adjacent flat plate-like base sheet and corrugated plate-like base sheet are heated, ultrasonically welded or bonded. Bonding is performed by using an adhesive. The ventilation element (33) is a corrugated honeycomb sheet made of ceramic paper or the like as a base sheet, and the honeycomb sheet is laminated to produce a structure of the ventilation element. The above structure is immersed in a slurry composed of an adsorbent, a binder, and a solvent. In addition, the manufacturing method itself of a honeycomb sheet is well-known, For example, it is disclosed by Unexamined-Japanese-Patent No. 2004-209420.

  In the adsorption element (3), the ventilation area (total opening area orthogonal to the ventilation direction of the ventilation element (33)) is, for example, upstream and downstream of the adsorbent module (1) in the dehumidifying / humidifying device. It is preferable to set the minimum cross-sectional area (opening area orthogonal to the ventilation direction) or more. When the ventilation area of the adsorption element (3) is set as described above, the flow rate of air passing through the adsorption element (3) can be reduced, and the adsorption and desorption functions can be further enhanced.

  Furthermore, as the ventilation element (33), a so-called heat sink type as shown in FIG. The ventilation element (33) shown in FIG. 3 has a structure in which a large number of flat substrate sheets are arranged adjacently in parallel in a state orthogonal to the plate surfaces (30a) and (30b) of the Peltier element (30). I have. That is, the ventilation element (33) shown in FIG. 3 has a structure in which a large number of slit-shaped ventilation holes are arranged in parallel.

  Further, in the ventilation element (33) shown in FIG. 3, as shown in FIG. 4, a cross-sectional shape perpendicular to the ventilation direction of each one base sheet (sheet indicated by reference numeral (33s) in FIG. 4) ( Although the cross-sectional shape orthogonal to the longitudinal direction may be formed in a straight line (see FIGS. 4A to 4E), in order to increase the surface area, the tip is separated from the tip side (the Peltier element (30)). It may be formed in a T-shape (see FIG. 4 (f)) or a Y-shape (see FIG. 4 (g)) whose top is the edge side. Furthermore, the ventilation element (33) shown in FIG. 4 does not necessarily have to be accommodated in the metal casing as a whole of the base sheet (33s), and has a structure in which the front end side of the base sheet (33s) is opened. May be.

  In the present invention, for example, the present invention is applied to a vehicle dehumidifying / humidifying device, and in the winter when the outside air is dry, the air blown out for window glass antifogging is sufficiently dehumidified, and the air blown out to the passenger side is effectively humidified Therefore, it is preferable that the adsorbent carried on the ventilation element (33) of the adsorption element (3) has the following adsorption characteristics.

  That is, the air circulating in the passenger compartment during heating in winter is relatively low with a relative humidity of about 25 to 50% when the temperature is 25 ° C., but the air blown out from the vehicle dehumidifying / humidifying device, for example, In order to achieve an anti-fogging effect on a low-temperature window glass at 5 ° C, the adsorbent sufficiently adsorbs moisture even at the low humidity as described above, and further reduces the relative humidity of the blown-out air to about 20% or less. It is desirable to have such characteristics.

  On the other hand, in the regeneration of the adsorbent, the aforementioned Peltier element (30) is used. However, in order to reduce power consumption, the adsorbent has a moisture content at a relatively low temperature of 90 ° C. or lower, preferably 70 ° C. or lower. It is desirable to be able to desorb. When the passenger compartment is in a moderately comfortable state, for example, when the temperature is 25 ° C. and the humidity is 50%, the air passing through the ventilation element (33) is heated to 90 ° C. by the Peltier element (30). The relative humidity is 2%, and the relative humidity when heated to 70 ° C. is 4%. Therefore, the adsorbent is desired to have a characteristic that it can be easily adsorbed and desorbed when the relative humidity is in the range of 2 to 25%, preferably in the range of 4 to 25%.

Further, the amount of adsorption / desorption desired for the adsorbent is as follows. That is, when the air in the passenger compartment is supplied to the window glass for anti-fogging, air of about 120 m ³ / h is generally blown out. At that time, when the temperature of the window glass is 5 ° C., it is preferable that the blown-out air is dehumidified to an absolute humidity of 5 ° C. or less and to about 5 g / kg or less in order to prevent condensation of the window glass. As described above, if the temperature of the indoor air is 25 ° C. and the humidity is 50%, the absolute humidity of the air is 9.8 g / kg, so that the air of 120 m ³ / h (= 15.5 kg / h) It is necessary to dehumidify more than 4.8 g / kg. Accordingly, it is preferable that 750 g / h of water can be adsorbed by the adsorbent.

Furthermore, if the air in the passenger compartment is humidified and supplied to the occupant without causing discomfort, it is assumed that the air is blown out at a wind speed of, for example, 1 to 2 m / s and an air volume of 4.7 m ³ / h. The At that time, the temperature of the air sucked into the dehumidifying / humidifying device is 20 ° C., the relative humidity is 30%, the absolute humidity is 4.35 g / kg (DA), and the temperature from the dehumidifying / humidifying device to the passenger is 25 ° C., the relative humidity. Is 40% and the absolute humidity is 7.91 g / kg (DA), it is necessary to increase the absolute humidity by 1.82 g / kg (DA). It must be humidified by 3 g / h.

On the other hand, in the operation of the adsorbent module (1), as described later, the adsorption operation and the desorption operation are alternately switched between the first adsorption element (3A) and the second adsorption element (3B). If the desorption operation is switched 12 times / h, it is necessary to adsorb and desorb approximately 0.85 g of water with the adsorbent in one adsorption operation and desorption operation of each adsorption element (3). Moreover, since it is practically incorporated into a small vehicle dehumidifying / humidifying device, it is necessary to reduce the size of the adsorbing element (3), and the effective volume of the ventilation element (33) (apparent volume in a state where the adsorbent is carried) is reduced. When the total is designed to be 35 cm ³ , the total mass of the adsorbent that can be supported by both ventilation elements (33) is about 6 g. Therefore, the adsorbent is required to have an adsorption / desorption amount of at least 0.14 g / g.

  That is, in the present invention, the adsorbent carried on the ventilation element (33) of the adsorption element (3) has an adsorption amount at a relative humidity of 25% and an adsorption amount at a relative humidity of 2% on a water vapor adsorption isotherm at 25 ° C. It is preferable to have an adsorption characteristic having a difference of 0.14 g / g or more. More preferably, the difference between the adsorption amount at 25% relative humidity and the adsorption amount at 4% relative humidity is 0.14 g / g or more. As long as it has the above characteristics, an adsorbent such as silica, mesoporous silica, alumina, activated carbon, and zeolite can be used, but in the present invention, to satisfy the above characteristics and to supply humidified air having a stable humidity, it will be described later. Thus, at least one of the two types of adsorbents used in each adsorbing element (3) is a zeolite that can easily adsorb water vapor at a low humidity and easily desorb at a low temperature.

  Examples of the zeolite include FAU type aluminosilicates and aluminophosphates having a silica / alumina ratio of 2.5 or more. As the aluminosilicates, those having a structure such as FAU, BEA, CHA, ERI, FER, MOR and the like are exemplified by the structure standard code defined by IZA. In particular, crystalline aluminophosphates containing at least Al and P in the skeleton structure are preferable. From the viewpoint of increasing the diffusion of water vapor in the individual particles of the adsorbent, the size (average particle size) of the adsorbent particles is usually 0.1 to 300 μm, preferably 0.5 to 250 μm, more preferably 1 to 200 μm. Most preferably, the thickness is 2 to 100 μm.

  The above aluminophosphates (hereinafter abbreviated as “ALPOs” as appropriate) are crystalline aluminophosphates defined by IZA (International Zeolite Association). In the crystalline aluminophosphate, atoms constituting the skeleton structure are aluminum and phosphorus, and a part of them may be substituted with other atoms. Among these, from the viewpoint of adsorption characteristics, any of the following aluminophosphates (I) to (III) is particularly preferable. (I) Me-aluminophosphate in which aluminum is partially substituted with a heteroatom Me1 (where Me1 belongs to the third or fourth period of the periodic table, 2A group, 7A group, 8 group, 1B group, 2B group, At least one element selected from elements of group 3B (excluding Al). (II) Me-aluminophosphate in which phosphorus is substituted with a heteroatom Me2 (where Me2 is a group 4B element belonging to the third or fourth period of the periodic table). (III) Me-aluminophosphate in which both aluminum and phosphorus are substituted by heteroatoms Me1 and Me2, respectively.

  Me may be contained alone or in combination of two or more. Preferable Me (Me1, Me2) is an element belonging to the third and fourth periods of the periodic table. Me1 preferably has an ionic radius of 3 to 0.8 nm in a divalent state, and more preferably has an ionic radius of 0.4 to 7 nm in a divalent and tetracoordinate state. Among these, at least one element selected from Fe, Co, Mg, and Zn is preferable from the viewpoint of ease of synthesis and adsorption characteristics, and Fe is particularly preferable. Me2 is a group 4B element belonging to the third or fourth period of the periodic table, and is preferably Si.

As the aluminophosphates, those having a framework density (FD) of 13 T / nm ³ or more and 20 T / nm ³ or less are usually used. The lower limit of the framework density is preferably 13.5 T / nm ³ or more, and more preferably 14 T / nm ³ or more. The upper limit of the framework density is preferably 19 T / nm ³ or less. The reason for specifying the framework density is as follows. That is, when the framework density is less than the above range, the structure tends to be unstable, and the durability is lowered. On the other hand, if the framework density exceeds the above range, the adsorption capacity becomes small and it is not suitable for use as an adsorbent. The framework density (unit: T / nm ³ ) means T atoms (number of elements constituting a skeleton other than oxygen per 1 nm ^{3 of} zeolite) present per unit volume (nm ³ ).

  As the structure of aluminophosphates, AEI, AEL, AET, AFI, AFN, AFR, AFS, AFT, AFX, ATO, ATS, CHA, ERI, LEV, and VFI can be cited as shown by the structure code defined by IZA. It is done. Among these, from the viewpoint of adsorption characteristics and durability, those having an AEI, AEL, AFI, CHA, and LEV structure are preferable, and those having an AFI and CHA structure are particularly preferable.

  Zeolite is preferably iron aluminophosphate (FAPO) or silica aluminophosphate (SAPO), particularly preferably SAPO-34 or FAPO-5, among the aluminophosphates as described above. One or two or more kinds of ALPOs can also be used in combination. The production conditions of FAPO and SAPO are not particularly limited, but are usually produced by hydrothermal synthesis after mixing an aluminum source, a phosphorus source, and a Me source such as Si and Fe, if necessary, and a template. Is done. ALPOs can be synthesized using known synthesis methods described in, for example, JP-B-1-57041, JP-A-2003-183020, JP-A-2004-136269, and the like.

  Incidentally, adsorbents suitable for the adsorbent module (1) of the present invention, such as crystalline silica aluminophosphate (SAPO-34), FAPO-5, and ALPO-5, have adsorption characteristics as shown by a solid line in FIG. It has. In SAPO-34, the adsorption amount changes abruptly between 2% relative humidity and 25% relative humidity on the water vapor adsorption isotherm at 25 ° C., and the difference in adsorption amount is 0.15 g / g or more. In addition, the amount of adsorption of FAPO-5 changes rapidly between a relative humidity of 14% and a relative humidity of 25% on a water vapor adsorption isotherm at 25 ° C., and the difference in the adsorption amount is 0.15 g / g or more. . A symbol (f) on the graph indicates an inflection point to be described later.

  On the other hand, for example, Y-type zeolite and silica gel have adsorption characteristics as indicated by a dotted line and a one-dot chain line in FIG. 9, and Y-type zeolite has a relative humidity of 2% in a water vapor adsorption isotherm at 25 ° C. The amount of adsorption changes abruptly in a narrow range of 5% relative humidity, and silica gel changes smoothly between 2% relative humidity and 25% relative humidity on a 25 ° C. water vapor adsorption isotherm. The difference in adsorption amount is about 0.12 g / g. That is, the adsorbent applied to the present invention has a characteristic of adsorbing and desorbing more water in a low humidity range.

  In the present invention, in order to satisfy the above-described characteristics of adsorbing and desorbing a sufficient amount of water vapor in a narrow temperature range, and to make the humidity of the humidified air obtained by the desorption operation uniform, the ventilation of the adsorption element (3) As the adsorbent applied to the element (33), two or more kinds of adsorbents having different relative vapor pressures serving as inflection points of the adsorption isotherm at the same measurement temperature are used. Moreover, at least one of these adsorbents is zeolite as described above. Examples of such zeolite include aluminosilicates and aluminophosphates, and aluminophosphates are preferably selected. In the present invention, an adsorbent having a different relative vapor pressure, which is an inflection point of an adsorption isotherm at the same measurement temperature, refers to an adsorption amount at least in one adsorbent when the adsorption amount at the same measurement temperature is measured. Adsorbents that have a relative vapor pressure that changes suddenly, and adsorbents that have different values of relative vapor pressure that suddenly change the amount of adsorption in the other adsorbent, or adsorbents that do not have such a relative vapor pressure And preferably adsorbents having different relative vapor pressure values. The relative vapor pressures that serve as the inflection points of the adsorption isotherm at a measurement temperature of 25 ° C., for example, are as shown in Table 1 below.

  Moreover, as shown in FIGS. 5-8, as the application | coating structure in adsorption | suction element (3) when using multiple types of adsorption material as mentioned above, as shown in FIGS. A structure in which different adsorbents are laminated and a structure in which the adsorbents are separately coated are mentioned. FIG. 5 illustrates a laminated structure of adsorbents in the ventilation element (33), and FIGS. 6 to 8 illustrate adsorbent coating structures in the vent element (33). 5 to 8, the adsorbent having a low relative vapor pressure, which is the inflection point of the adsorption isotherm, is indicated by reference numeral (31) among the combined adsorbents and becomes the inflection point of the adsorption isotherm. An adsorbent having a high relative vapor pressure is indicated by reference numeral (32).

  Specifically, in the adsorbing element (3) shown in FIG. 5, the adsorbing material has a low relative vapor pressure as an inflection point of the adsorption isotherm with respect to the surface of each vent hole of the venting element (33). (31) to the higher adsorbent (32). That is, the adsorbent (31) having a low relative vapor pressure is applied to the surface of the vent hole, and the adsorbent (32) having a high relative vapor pressure is applied to the surface of the adsorbent (31).

  As described above, the adsorbent is applied to the ventilation element (33) made of a honeycomb sheet or the like with respect to the slurry composed of the adsorbent, the binder, and the solvent in the course of manufacturing the adsorbing element (3). Although the structure is immersed, in order to laminate the two adsorbents (31) and (32) as shown in FIG. 5, first, the ventilation element (33) is added to the slurry containing the adsorbent (31). The structure is immersed and dried, and then the structure of the ventilation element (33) is immersed in a slurry containing the adsorbent (32) and dried. Alternatively, the structure of the ventilation element (33) may be assembled after the slurry containing the adsorbents (31) and (32) is separately applied to the base sheet.

  In the adsorbing element (3) shown in FIG. 6, the adsorbing material is removed from the heat source (plate surfaces (30a) and (30b) of the Peltier element (30)) with respect to the surface of each vent hole of the vent element (33). In accordance with the direction of separation, the adsorbent is coated in the order of the adsorbent having a low relative vapor pressure, which becomes an inflection point of the adsorption isotherm, to the adsorbent having a high relative vapor pressure. That is, the surface of each ventilation hole of the ventilation element (33) at a portion corresponding to approximately ½ of the thickness of the adsorption element (3) on the side close to the plate surfaces (30a) and (30b) of the Peltier element (30) The adsorbent (31) having a low relative vapor pressure is applied to the surface, and the thickness of the adsorbing element (3) on the side away from the plate surfaces (30a) and (30b) of the Peltier element (30) is approximately ½. The adsorbent (32) having a high relative vapor pressure is applied to the surface of each ventilation hole of the ventilation element (33) corresponding to the above.

  As shown in FIG. 6, to separate the two adsorbents (31) and (32), first, for example, the structure of the ventilation element (33) with respect to the slurry containing one adsorbent (31). The body is immersed only in a portion corresponding to approximately half of its thickness (thickness in the direction orthogonal to the plate surfaces (30a) and (30b) of the Peltier element (30)), and then dried. For example, with respect to the slurry containing the other adsorbent (32), the structure of the ventilation element (33) is made thicker (thickness in the direction perpendicular to the plate surfaces (30a) and (30b) of the Peltier element (30)). Only the portion corresponding to the remaining half of the above is immersed and dried. Alternatively, the structure of the ventilation element (33) may be assembled after the slurry containing the adsorbents (31) and (32) is separately applied to the base sheet.

  In the adsorbing element (3) shown in FIG. 7, the adsorbing material is from an adsorbing material having a low relative vapor pressure that becomes an inflection point of the adsorption isotherm according to the aeration direction with respect to the surface of each ventilation hole of the ventilation element (33). They are painted in order of the adsorbent. That is, each ventilation hole of the ventilation element (33) in a portion corresponding to approximately half of the length of the adsorption element (3) on the upstream side in the ventilation direction of the ventilation element (33) (length along the ventilation direction). The adsorbent (31) having a low relative vapor pressure is applied to the surface, and is approximately 1 / length of the length of the adsorbing element (3) on the downstream side of the ventilation element (33) in the ventilation direction (length along the ventilation direction). The adsorbent (32) having a high relative vapor pressure is applied to the surface of each ventilation hole of the ventilation element (33) corresponding to 2.

  As shown in FIG. 7, to separate the two adsorbents (31) and (32), first, for example, the structure of the ventilation element (33) with respect to the slurry containing one adsorbent (31). The body is dipped only in the front end portion corresponding to approximately half of its length (length along the ventilation direction) and dried, and then, for example, the other adsorbent (32) is included. In the slurry, the structure of the ventilation element (33) is dipped only in a portion on the rear end side corresponding to approximately ½ of its length (length along the ventilation direction) and dried. Alternatively, the structure of the ventilation element (33) may be assembled after the slurry containing the adsorbents (31) and (32) is separately applied to the base sheet.

  In the adsorbing element (3) shown in FIG. 8, the adsorbent is separated from the heat source (plate surfaces (30a, 30b) of the Peltier element (30)) with respect to the surface of each vent hole of the vent element (33). In accordance with the direction of the flow and the direction of ventilation, the adsorbents having low relative vapor pressure, which is the inflection point of the adsorption isotherm, are coated in the order of the high adsorbent. That is, when the inside of the ventilation element is divided into two regions along a virtual inclined plane gradually approaching the desorption heat source side (Peltier element (30) side) along the ventilation direction of the ventilation element (33), the ventilation element ( 33) The adsorbent (31) having a low relative vapor pressure is applied to the surface of each ventilation hole of the ventilation element (33) corresponding to one region including the front end portion (upstream side of the ventilation direction) of the ventilation element (33). 33) The adsorbent (32) having a high relative vapor pressure is applied to the surface of each vent hole of the vent element (33) corresponding to the other region including the rear end (downstream side in the vent direction).

  As shown in FIG. 8, to separate the two adsorbents (31) and (32), first, for example, the structure of the ventilation element (33) with respect to the slurry containing one adsorbent (31). Is immersed in an inclined state. In other words, the front end face (end face including the intake side opening of the vent hole) of the structure of the ventilation element (33) is immersed, and the rear end face (end face including the exhaust side opening of the vent hole) is not immersed. In a tilted state, only a portion corresponding to approximately ½ of the volume of the structure is immersed and dried. Next, for example, the structure of the ventilation element (33) is immersed in a reverse inclined state in the slurry containing the other adsorbent (32). In other words, the rear end face (end face including the exhaust side opening of the vent hole) of the structure of the ventilation element (33) is immersed, and the front end face (end face including the intake side opening of the vent hole) is not immersed. In the inclined state, only the portion corresponding to the remaining half of the volume of the structure is immersed and dried. Alternatively, the structure of the ventilation element (33) may be assembled after the slurry containing the adsorbents (31) and (32) is separately applied to the base sheet.

  Further, in the case of the structure of the ventilation element (33) shown in FIG. 4, the application form of the adsorbent to the base sheet (33s) can be freely designed in consideration of the necessary adsorption / desorption amount. That is, as shown in each drawing of FIG. 4, the base material sheet (33s) may be applied such that the thickness of the adsorbent changes at the base end side, the tip end side, or the central portion of the width. The ventilation element (33) shown in FIG. 4 uses the base material sheet (33s) in which the slurry containing the adsorbents (31) and (32) is applied to the base material sheet (33s) and the adsorbents are laminated. Then, the ventilation element (33) may be assembled.

  In the layer structure and the coating structure of the adsorption element (3) shown in each figure, the thickness of the adsorbents (31) and (32) can be adjusted by changing the viscosity of the slurry and the number of dip coatings, The thickness is usually 10 to 800 μm, preferably 50 to 300 μm.

  The adsorbent module (1) according to the present invention is configured so that the adsorption cold source and the desorption heat source for the adsorption elements (3A) and (3B) are functionally replaced by reversing the current flowing in the Peltier element (30). The adsorption operation and desorption operation in the elements (3A) and (3B) can be switched. Thereby, in the adsorbent module (1), the first adsorbing element (3A) and the second adsorbing element (3B) are alternately subjected to the adsorbing operation and the desorbing operation.

  Further, in the adsorbent module (1) of the present invention, it is preferable that the first adsorbing element (3A) and the second adsorbing element (3B) are configured to be replaceable in order to facilitate maintenance management. . Specifically, the adsorbent module (1) is independent of a device such as a dehumidifying / humidifying device in a state where the adsorbing elements (3A) and (3B) are in close contact with the Peltier element (30) without being fixed. Is removably accommodated.

  As described above, the adsorbent module (1) of the present invention is relative to the ventilation element (33) of each adsorbing element (3), as described above, which is the inflection point of the adsorption isotherm at the same measurement temperature. Two or more kinds of adsorbents having different vapor pressures, for example, two kinds of adsorbents (31) and (30) are applied, and at least one of them is zeolite, and during the desorption operation, the adsorbent (31), Since the water vapor can be desorbed step by step according to the temperature change of (30), humid air with stable humidity can be obtained.

  Further, the adsorbent module (1) of the present invention functions as a pair of fixed adsorbing elements (3A) and (3B) carrying adsorbents as a cooling heat source and a desorption heat source for adsorption of the Peltier element (30). The plate surfaces (30a) and (30b) are arranged directly, and are switched between the adsorption operation and the desorption operation by reversing the current flowing to the Peltier element (30), so that the dehumidified air is humidified. Continuous air can be generated. Therefore, it is not necessary to provide a drive unit as in the conventional device, and the thermal conductivity between the Peltier element (30) when heating and cooling the adsorption elements (3A) and (3B) is high. The module can be further downsized.

  Further, as described above, the adsorbent module (1) of the present invention is configured such that the first adsorbing element (3A) and the second adsorbing element (3B) are replaceable, so that clogging and When the adsorbing ability is reduced by adsorption of odorous substances other than water vapor, the adsorbent module (1) can be taken out from the dehumidifying / humidifying device, and the adsorbing elements (3A) and (3B) can be exchanged. As a result, the performance of the apparatus can be recovered only by exchanging the adsorption elements (3A) and (3B), and the concentrated odorous substance and the like can be prevented from being released again into the room. In addition, by replacing the adsorption element, for example, in units of several years without using a filter, the apparatus can be maintained for a long time, and maintenance costs can be reduced.

  Next, the dehumidifying / humidifying device of the present invention using the adsorbent module (1) will be described. The dehumidifying / humidifying device of the present invention is configured, for example, as a vehicle dehumidifying / humidifying device that dehumidifies and humidifies air in a passenger compartment. Such a dehumidifying / humidifying device is used for supplying dehumidifying air for defogging to the window glass and supplying humidified air to the passenger side, for example, in winter when the outside air is dry. In addition, it is used to supply dehumidified air to the occupant side in summer when the outside air becomes high humidity by changing the operation setting of the flow path switching device (4) described later. As a structure of said dehumidification / humidification apparatus, as shown to Fig.10 (a) and (b), two aspects are mentioned by the difference in ventilation.

In the dehumidifying / humidifying device illustrated in FIG. 10A, a blower (2), an adsorbent module (1), and a flow switching device (4) are flow paths to a main body casing (not shown) as a flow path through which air passes. Are arranged sequentially along the line. Two blowers (2) are provided corresponding to the pair of adsorption elements (3A) and (3B) of the adsorbent module (1). As the blower (2), a DC centrifugal fan is usually used. The rotational speed of such a centrifugal fan is about 3000 to 6000 rpm, the maximum static pressure is about 100 to 300 Pa, and the maximum air volume is about 0.1 to 0.5 m ³ / min. In addition, in a dehumidification / humidification apparatus, you may be comprised so that air may be supplied to a pair of adsorption | suction element (3A) and (3B) by one common fan.

  The adsorbent module (1) is disposed in the main body casing so that the air supplied by the blower (2) can pass through the adsorbing elements (3A) and (3B) of the adsorbent module. In the adsorbent module (1), the adsorption operation and the desorption operation of the adsorption elements (3A) and (3B) are alternately switched. Therefore, on the downstream side of the adsorbent module (1), in order to blow out dehumidified air and humidified air separately separately, a flow path switching device (4) for directing each air to a predetermined outlet is disposed. Is done.

  As a mechanism for switching the air blowing flow path, a mechanism for changing the connection destination by moving two flexible pipes, two shutters that are operated synchronously by a link or the like, and alternately opening and closing the shutter A mechanism that changes the connection destination by rotating two coaxial rotary shutters that are adjacent to each other and orthogonal to each other in a side view by 90 degrees can be used. From the viewpoint of achieving the above, the flow path switching device (4) is configured to switch the destination of each air by means of a damper (44) rotated by an actuator (45), for example, as shown in FIG. Has been made. That is, the flow path switching device (4) has a first adsorption element (3A) of the adsorbent module (1) with respect to the first and second outlets (11) and (12) (see FIG. 11) of the casing. The air that has passed through and the air that has passed through the second adsorption element (3B) can be diverted separately, and the diversion destination can be switched.

  Specifically, the flow path switching device (4) includes one adsorbing element of the adsorbent module (1) inside a box-shaped casing (a part of the main body casing) constituting the outline of the flow path switching device. The upper first introduction chamber (41) into which the air that has passed through (3A) flows, and the lower second introduction chamber into which the air that has passed through the other adsorption element (3B) of the adsorbent module (1) flows in. A chamber (42), a distribution chamber (43) between the introduction chambers (41) and (42), a damper (44) for switching the air flow, and an actuator (45) for operating the damper. Configured.

  As shown in FIGS. 11 and 12, the front end (the left end in FIG. 11) of the casing of the flow path switching device (4) is provided with inlets (51) and (52) through which air flows. The rear end (the rear end of the main body casing) (the right end in FIG. 11) has a first air outlet (11) and a second air outlet ( 12) is provided. And the inside of a casing is divided by the rib (15) before and behind in the air flow direction (see FIGS. 11A and 11B), and the first introduction chamber (41) and the second introduction chamber ( 42) and the distribution chamber (43) are formed by dividing the space in the casing ahead of the rib (15) into two upper and lower stages by two partition plates (16) and (17) (FIG. 11 (b)). ) And FIG. 12 (a)).

  As shown in FIGS. 11 (b) and 12 (a), the first introduction chamber (41) is connected to the first adsorbent module (1) through the introduction port (51) provided at the upper part of the front end of the casing. The air passing through the adsorption element (3A) is configured to flow in. On the other hand, the air that has passed through the second adsorption element (3B) of the adsorbent module (1) flows into the second introduction chamber (42) through the introduction port (52) provided at the lower part of the front end of the casing. Configured.

  The distribution chamber (43) is a space that cooperates with the damper (44) to distribute the outflow destination of the air, and as shown in FIGS. 11 (b) and 12 (a), the first chamber It arrange | positions between an introduction chamber (41) and a 2nd introduction chamber (42). And as shown in FIG. 13, the 1st inflow port (61) and 2nd inflow port (62) as a vent hole are provided in each center of the above-mentioned two partition plates (16) and (17). These first and second inlets serve as air inlets to the distribution chamber (43). Moreover, the 1st outflow port (71) and 2nd outflow port (72) as a vent hole are provided in the right and left of the site | part corresponding to the height of the distribution chamber (43) of a rib (15), These 1st And the 2nd outflow port is an exit of the air from a distribution chamber (43).

  That is, the distribution chamber (43) is provided with a first inflow port (61) and a second inflow port (62) that communicate with the introduction chambers (41) and (42), respectively. ), (42) air flows in. The distribution chamber (43) is provided with a first outlet (71) and a second outlet (72) that communicate with the first outlet (11) and the second outlet (12), respectively. The air in the distribution chamber (43) flows out to the air outlets (11) and (12).

  As shown in FIGS. 11, 12 (a) and 13, the damper (44) is located at the center of the distribution chamber (43), in other words, the first inlet (61) and the second inlet. (62), and is configured to be rotatable by a fixed angle around an axis perpendicular to the front end face of the casing and the plate surface of the rib (15). The damper (44) is operated by an actuator (45) disposed on the opposite side (downstream side) of the distribution chamber (43) with respect to the rib (15), and the left and right side edges of the damper are separated by a partition plate ( By contacting 16) and (17), the distribution chamber (43) can be partitioned into two spaces. As the actuator (45), a geared type stepping motor is usually used to rotate the damper (44) forward and backward by a certain angle.

  The distribution chamber (43) includes a first inflow port (61) and a first outflow port (71) as shown in FIG. 13 (a) by rotating the damper (44) to one side. And a space (8b) including the second inflow port (62) and the second outflow port (72), and to the other of the damper (44). 13 (b), the space (9a) including the first inflow port (61) and the second outflow port (72), the second inflow port (62), and The first outlet (71) is partitioned into a space (9b) including the first outlet (71).

  In the dehumidifying / humidifying apparatus as described above, for example, the dehumidified air is continuously blown out from the first air outlet (11), and the humidified air is continuously blown out from the second air outlet (12). As described above, the current flowing through the Peltier element (30) in the adsorbent module (1) is reversed every predetermined time to replace the adsorption cold heat source and the desorption heat source, and the flow path switching device (4 ), The destination of the air that has passed through the first adsorbing element (3A) of the adsorbent module (1) and the air that has passed through the second adsorbing element (3B) in accordance with the reversal of the current. Configured to switch.

  That is, in the adsorbent module (1), the current flowing through the Peltier element (30) is reversed at a time interval according to the adsorption / desorption operation of each adsorption element (3A), (3B), for example, 30 to 600 seconds. The heat absorption function and the heat dissipation function on the plate surfaces (30a) and (30b) of the Peltier element (30) are interchanged. On the other hand, in the flow path switching device (4), the damper (44) is actuated and processed by the adsorbent module (1) after a lapse of a certain time simultaneously with or reversely with the reversal of the current of the Peltier element (30). One of the destinations of the air is from the first air outlet (11) to the second air outlet (12), and the other is from the second air outlet (12) to the first air outlet (11). It is made to switch. The timing of operating the flow path switching device (4) is the time until the temperature of each plate surface (30a), (30b) of the Peltier element (30) is reversed in high and low after the current of the Peltier element (30) is reversed. Between.

  Although not shown, the dehumidifying / humidifying device includes a blower (2) control, a Peltier element (30) current control in the adsorbent module (1), and an actuator (45) in the flow path switching device (4). A control device for performing the control is provided. The first air outlet (11) of the flow path switching device (4) is connected to an air passage as a defroster air outlet directed to the window glass, and an occupant is connected to the second air outlet (12). A face outlet directed to the side is connected.

  For example, a dehumidifying / humidifying method for a passenger compartment by the dehumidifying / humidifying device of the present invention is as follows. That is, as shown in FIG. 10 (a), in the dehumidifying / humidifying device, the blower (2) sucks indoor air, and uses this to absorb the first adsorbing element (3A) and the second adsorbing module (1). Each is supplied to the adsorption element (3B). In the adsorbent module (1), for example, one plate surface (30a) of the Peltier element (30) functions as an adsorption cold heat source, and the other plate surface (30b) functions as a desorption heat source. The first adsorbing element (3A) is cooled by the plate surface (30a), and the adsorbing operation of the adsorbent carried on the ventilation element (33) proceeds, and water vapor in the air passing through the aeration element (33). To adsorb. On the other hand, the second adsorption element (3B) is heated by the plate surface (30b) of the Peltier element (30), and the desorption operation of the adsorbent carried on the ventilation element (33) of the second adsorption element proceeds. Then, water vapor is released into the air passing through the ventilation element (33).

  The dehumidified air obtained by passing through the first adsorbing element (3A) of the adsorbent module (1) and the humidified air obtained by passing through the second adsorbing element (3B) are respectively flow paths. It flows into the first introduction chamber (41) and the second introduction chamber (42) of the flow path switching device through the introduction ports (51) and (52) (see FIG. 12) of the switching device (4). In the flow path switching device (4), as shown in FIG. 13 (a), the damper (44) is rotated in one direction, and the distribution chamber (43) is divided into two spaces (8a), (8b). ). That is, the distribution chamber (43) includes a space (8a) including the first inlet (61) and the first outlet (71), the second inlet (62), and the second outlet ( 72) and a space (8b) including a damper (44).

  Accordingly, as shown in FIG. 13 (a), the dehumidified air that has flowed into the first introduction chamber (41) flows into the space (8a) of the distribution chamber (43) and passes through the first outlet (71). 1 is sent to the air outlet (11) (see FIG. 11 (a)). On the other hand, the humidified air that has flowed into the second introduction chamber (42) flows into the space (8b) of the distribution chamber (43) and passes through the second outlet (72) to the second outlet (12) (FIG. 11). (See (a)).

  In the adsorbent module (1), when the adsorption operation and the desorption operation are performed for a predetermined time, the current flowing through the Peltier element (30) is reversed, and the adsorption cold heat source and the desorption heat source are switched. In other words, the plate surface (30a) of the Peltier element (30) functions as a desorption heat source, and the plate surface (30b) functions as an adsorption cold heat source. Then, the adsorption / desorption operation of the adsorbent is switched in each of the adsorption elements (3A) and (3B) by switching the functions of the plate surfaces (30a) and (30b) of the Peltier element (30).

  That is, said 1st adsorption | suction element (3A) desorbs the water vapor | steam adsorbed until then, when the ventilation | gas_flowing element (33) and adsorbent which were cooled are heated. On the other hand, said 2nd adsorption | suction element (3B) starts adsorption | suction of water vapor | steam, when the ventilation element (33) and adsorbent which were heated are cooled. As a result, the first adsorbing element (3A) releases water vapor to the air passing through it and humidifies it, and the second adsorbing element (3B) adsorbs the water vapor in the air passing through it and dehumidifies it. To do. As a result, the humidified air flows into the first introduction chamber (41) of the flow path switching device (4), and the dehumidified air flows into the second introduction chamber (42).

  Further, when the current is reversed in the Peltier element (30), the flow path is switched by the flow path switching device (4), for example, after 0 to 60 seconds have elapsed since the reverse of the current. That is, in the flow path switching device (4), the actuator (45) is operated, and the damper (44) is rotated in the other direction from the state shown in FIG. 13 (a) to the state shown in FIG. 13 (b). The distribution chamber (43) is partitioned into a space (9a) and a space (9b). In other words, the distribution chamber (43) includes the space (9a) including the first inlet (61) and the second outlet (72), the second inlet (62), and the first inlet. It is partitioned by a damper (44) from a space (9b) containing the outlet (71).

  Therefore, as shown in FIG. 13 (b), the humidified air in the first introduction chamber (41) flows into the space (9a) of the distribution chamber (43), and passes through the second outlet (72) for the second time. The air is sent to the air outlet (12) (see FIG. 11 (a)). On the other hand, the dehumidified air in the second introduction chamber (42) flows into the space (9b) of the distribution chamber (43) and passes through the first outlet (71) to the first outlet (11) (FIG. 11 (a). ))).

  In the dehumidifying / humidifying device described above, the adsorption / desorption operation is switched at a fixed timing in the adsorbent module (1), and the flow path for dehumidified air and humidified air is switched by the channel switching device (4) accordingly. Thereby, for example, dehumidified air can be continuously blown out from the first air outlet (11), and humidified air can be continuously blown out from the second air outlet (12). And dehumidified air can be used for the fog prevention of a window glass, and humidified air can be used for comfort improvement.

  The dehumidifying / humidifying device using the adsorbent module (1) of the present invention can also be configured as shown in FIG. The dehumidifying / humidifying device illustrated in FIG. 10B includes a blower (2), a flow switching device (4), an adsorbent module (1), a flow channel in a main body casing (not shown) as a flow channel through which air passes. The switching device (4) and the blower (2) are sequentially arranged along the flow path. That is, with the adsorbent module (1) as the center, the flow path switching device (4) and the blower (2) are arranged symmetrically before and after the adsorbent module (1). Then, each flow path switching device (4) is provided with vent holes that can correspond to the aforementioned inlets (51), (52) (see FIG. 11), the respective adsorbing elements (3A) of the adsorbent module (1), (3B) is arranged facing each other, and each blower (2) sends room air to each flow path switching device (4) from the vent hole corresponding to, for example, the second outlet (12) described above. It is configured to care.

  Also in the dehumidifying / humidifying device shown in FIG. 10 (b), the adsorption cold heat source and the desorption heat source are functionally switched by reversing the current flowing to the Peltier element (30) of the adsorbent module (1) to thereby replace each adsorption element (3A). ) And (3B), the cooling and heating are reversed, and the adsorption operation and desorption operation of each adsorption element (3A) and (3B) are switched at a constant timing, and the dehumidified air and the humidified air are blown out accordingly. By switching the path using each flow path switching device (4), for example, dehumidified air is continuously supplied from the first air outlet (11) of the flow path switching device (4) on one side (for example, the left side in FIG. 10B). Then, the humidified air can be continuously blown out from the first air outlet (11) of the flow path switching device (4) on the other side (for example, the right side in FIG. 10B).

  As described above, the dehumidifying / humidifying device of the present invention is configured using the adsorbent module (1) described above in which the adsorbing elements (3A) and (3B) are directly arranged on the Peltier element (30). Therefore, it is not necessary to provide a drive unit for switching between the cold heat source and the heat source, the device configuration can be simplified, and the entire device can be further downsized. According to the dehumidifying / humidifying device of the present invention, the adsorbent module (1) in which the specific adsorbents (31) and (32) are applied to the adsorbing elements (3A) and (3B) is used. Since it is comprised, humidified air with further stable humidity can be supplied.

  In the dehumidifying / humidifying device of the present invention, by switching the operation setting of the damper (44) of the flow path switching device (4), air dehumidified from the second air outlet (12), for example, in summer, is occupant. It can be blown out to the side. In the dehumidifying / humidifying device, a heat exchanger such as a fin-type heat exchanger or an orthogonal heat exchanger is provided downstream of the adsorbent module (1), preferably downstream of the flow path switching device (4). Between the air disposed and dehumidified (or humidified) by the first adsorbing element (3A) of the adsorbent module (1) and the air humidified (or dehumidified) by the second adsorbing element (3B). You may be comprised so that heat exchange is possible. When the heat exchanger is arranged, heat exchange can be performed between the high-temperature humidified air heated by the Peltier element (30) and the low-temperature dehumidified air cooled by the Peltier element (30). Can blow out comfortable air that is humidified and has a moderately low temperature to the occupant side. Further, a deodorizing filter for capturing odorous components generated in the room may be arranged upstream or downstream of the adsorbent module (1).

  An adsorbent module coated with two types of adsorbents and an adsorbent module coated with one type of adsorbent were manufactured, and the difference in the humidified state when air was humidified with these adsorbent modules was tested and confirmed.

  In comparing the two aspects, first, four adsorbing elements (elements in which a ventilation element is configured by arranging flat substrate sheets in parallel) having the structure shown in FIG. 3 were manufactured. The ventilation element of each element is composed of 70 aluminum base sheets (fins) of 0.15 mm (thickness) × 9.3 mm (width) × 70 mm (length) arranged on an aluminum flat plate. The outer diameter of the element was 70 mm (width) × 14 mm (length) × 9.3 mm (height). Then, for these adsorbing elements, as an adsorbent, three of them were coated with zeolite Z01 (FAPO-5), and one was coated with zeolite Z02 (SAPO-34). The application amount in each adsorption element was 19 g.

  Next, the adsorbing element coated with zeolite Z02 and the adsorbing element coated with zeolite Z01 were sequentially connected back and forth and fixed on one plate surface of the Peltier element to form one adsorbent module. That is, an adsorbent module for an experiment having a structure in which an adsorbing element in which two kinds of adsorbents of zeolite Z02 and Z01 were coated on the front and rear sides was attached only to one side of the Peltier element was assembled (Example). On the other hand, two adsorbing elements coated with zeolite Z01 were connected back and forth and fixed on one plate surface of the Peltier element in the same manner as described above to form one adsorbent module. That is, an experimental adsorbent module having a structure in which an adsorbing element coated only with zeolite Z01 was attached to one side of a Peltier element was assembled (reference example).

In the humidification test, for each of the adsorbent modules described above, the humidity change at the exit portion of the adsorption element during the desorption (humidification) operation was measured. In such a measurement, an air conditioning device (a device in which a heater, a cooler, and a humidifier are incorporated in a container, and air in the container adjusted to a predetermined temperature and humidity is blown by a fan) is used at 29 ° C., 5. While the air adjusted to 05 g / kg (DA) is blown to the adsorbent module at an air flow rate of 24 m ³ / h, the adsorption / desorption operation is repeated at regular intervals, and the absolute humidity of the air passing through the adsorption element at the time of desorption is Changes were measured. The adsorption / desorption operation switches the temperature of the plate surface at a cycle of 20 minutes by controlling the power supply voltage while measuring the plate surface temperature of the Peltier element to which the adsorption element is attached. The temperature was adjusted to 15 ° C., and the temperature of the plate surface was adjusted to 50 ° C. in the detachment operation.

  The absolute humidity of the air at the outlet portion of the adsorption element was obtained by placing the adsorbent module on a balance, measuring the change in the weight of the adsorbent module at regular time intervals, and calculating the absolute humidity based on the following arithmetic expression. As a result, temporal changes in absolute humidity as shown in Table 2 were observed for each adsorbent module. Further, the water vapor adsorption amount (ratio to the total adsorption amount) in the adsorption / desorption operation was as shown in the graph of FIG. Then, from the results of the graphs in Table 2 and FIG. 14, the adsorbent module coated with two types of adsorbents is an outlet at the time of desorption (humidification) operation compared to the adsorbent module coated with only one type of adsorbent. It was confirmed that the change in the absolute humidity of the air in the area was gradual, and humidified air with stable humidity could be supplied.

It is a perspective view which shows an example of the adsorbent module which concerns on this invention. It is a perspective view which shows the other example of the adsorbent module which concerns on this invention. It is a perspective view which shows the further another example of the adsorbent module which concerns on this invention. It is a partial perspective view which shows the other example of the base material sheet which comprises the ventilation element of an adsorbent module. It is a figure which shows the laminated structure as an example of the application | coating structure of the adsorbent in the adsorption element of the adsorbent module which concerns on this invention, and is a fragmentary sectional view fractured | ruptured orthogonally to the ventilation direction of the element of FIG. It is a figure which shows the coating structure as another example of the application | coating structure of the adsorbent in the adsorption | suction element of the adsorbent module which concerns on this invention, and is sectional drawing fractured | ruptured along the II line | wire of FIG. It is a figure which shows the coating structure as another example of the application | coating structure of the adsorbent in the adsorption | suction element of the adsorbent module which concerns on this invention, and is sectional drawing fractured | ruptured along the II line of FIG. It is a figure which shows the coating structure as another example of the application | coating structure of the adsorbent in the adsorption | suction element of the adsorbent module which concerns on this invention, and is sectional drawing fractured | ruptured along the II line of FIG. It is a water vapor | steam adsorption isotherm which shows the adsorption | suction characteristic of an adsorbent suitable for the adsorption | suction element which concerns on this invention. It is a typical block diagram which shows the structure of the dehumidification / humidification apparatus as an example of use of the adsorbent module which concerns on this invention. It is the top view and side view which show the internal structure of an example of the flow-path switching apparatus used for a dehumidification / humidification apparatus. It is the front view and rear view of the flow-path switching apparatus of FIG. It is a figure which shows the function of a flow-path switching apparatus, and is sectional drawing fractured | ruptured along the BB line of FIG. It is a graph which shows the adsorption / desorption characteristic in each adsorbent module of an Example and a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Adsorbent module 11: 1st blower outlet 12: 2nd blower outlet 2: Blower 3: Adsorption element 3A: 1st adsorption element 3B: 2nd adsorption element 30: Peltier element 30a: Peltier element board Surface (cooling heat source for adsorption or desorption heat source)
30b: Plate surface of Peltier element (desorption heat source part or adsorption cold heat source part)
31: Adsorbent (adsorbent with a low relative vapor pressure that becomes an inflection point of the adsorption isotherm)
32: Adsorbent (adsorbent with a high relative vapor pressure that becomes the inflection point of the adsorption isotherm)
33: Ventilation element 4: Flow path switching device

Claims (9)

  A Peltier element having a pair of plate surfaces each functioning as an adsorption cooling heat source unit and a desorption heat source unit, and a first adsorption element and a second adsorption element directly disposed on each plate surface of the Peltier element, An adsorbent module comprising: a vent element in which a plurality of vent holes are provided in parallel and in parallel; and an adsorbent for adsorbing water vapor applied to the vent element; As the adsorbent, two or more types of adsorbents having different relative vapor pressures serving as inflection points of the adsorption isotherm at the same measurement temperature are used, and at least one of these adsorbents is zeolite. An adsorbent module characterized by that.   2. The adsorbent module according to claim 1, wherein the adsorbent is laminated in the order of an adsorbent having a low relative vapor pressure, which is an inflection point of an adsorption isotherm, to a high adsorbent on the surface of each vent hole of the vent element. .   Adsorbents are applied in order from the adsorbent with the lower relative vapor pressure, which becomes the inflection point of the adsorption isotherm, to the higher adsorbent in the direction away from the plate surface of the Peltier element on the surface of each vent hole of the vent element. The adsorbent module according to claim 1.   The adsorbent is applied to the surface of each vent hole of the vent element in the order of the adsorbent having a low relative vapor pressure, which becomes the inflection point of the adsorption isotherm, in the order of the adsorbent in accordance with the ventilation direction. The adsorbent module as described.   The adsorbent is an adsorbent with a low relative vapor pressure that is the inflection point of the adsorption isotherm according to the direction away from the plate surface of the Peltier element and according to the ventilation direction with respect to the surface of each vent hole of the vent element. The adsorbent module according to claim 1, wherein the adsorbent modules are coated in the order of.   The adsorbent module according to any one of claims 1 to 5, wherein the zeolite is a crystalline aluminophosphate having a framework structure containing at least Al and P.   The adsorption operation and the desorption operation of each adsorption element can be switched by switching the adsorption cold heat source section and the desorption heat source section for the first and second adsorption elements by reversing the current flowing in the Peltier element. Item 7. The adsorbent module according to any one of Items 1 to 6.   The adsorbent module according to claim 1, wherein each of the first and second adsorbing elements is configured to be replaceable.   A dehumidifying / humidifying device that dehumidifies and humidifies air using the adsorbent module according to any one of claims 1 to 8, wherein a blower, an adsorbent module, and a flow path switching device are provided on a body casing as an air flow path. The main casing is provided with a first air outlet for blowing dehumidified (or humidified) air and a second air outlet for blowing out humidified (or dehumidified) air. The adsorbent module is disposed in the main body casing so that air supplied by the blower can pass through each adsorbing element, and the flow path switching device includes the first and second blowers of the main body casing. The outlet is configured to be able to divert the air that has passed through the first adsorbing element of the adsorbent module and the air that has passed through the second adsorbing element, and to switch the diversion destination. , By reversing the current flowing through the Peltier element in the adsorbent module to replace the adsorption cold heat source part and the desorption heat source part of the Peltier element, and in the flow path switching device, according to the reversal of the current, A dehumidifying / humidifying device configured to switch destinations.

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