JP4393478B2 - Desiccant ventilation system - Google Patents

Description

  The present invention relates to a desiccant ventilation system for keeping indoor spaces, such as automobiles, houses, offices, commercial facilities, gymnasiums, event venues, and factories, in a comfortable and hygienic air condition while suppressing the use of energy.

  In recent years, the trend of global warming has become prominent, and high-efficiency use (energy conservation activities) of fossil fuels has been promoted to reduce the amount of carbon dioxide, the main greenhouse gas, as a countermeasure.

  In particular, the number of air conditioners installed in the transport field and the consumer field (household and business) and the frequency of use are still increasing, and the amount of energy used (especially fuel such as gasoline and the amount of power used) is expanding. Therefore, improving the efficiency of air-conditioning equipment and systems for reducing the amount of usage is an urgent issue.

  For example, in an automobile, in-vehicle dehumidification by a car air conditioner in winter, inefficient driving is performed such as cooling and dehumidifying the air in the vehicle below the dew point and then heating again. In addition, in the consumer field, as a result of air-tightening of houses and office buildings to improve air conditioning efficiency, adverse effects such as sick house syndrome caused by harmful chemical substances (VOC) generated from furniture and building materials have come to occur. As countermeasures, ventilation is strengthened in houses and offices. However, enhanced ventilation leads to an increase in indoor air conditioning load due to outside air, especially latent heat load such as dehumidification and humidification, so an energy saving ventilation system is indispensable.

  The air conditioner cools the air to be treated to below the dew point, condenses and removes the moisture in the air, and then heats the air that has been cooled to prevent fogging of the automobile window glass and dehumidification in the living room. Therefore, if the dehumidifying load on the car air conditioner or indoor air conditioner (hereinafter referred to as “air conditioner”) is reduced, the air conditioner is released from the load that cools the air to a low temperature range, and the fuel efficiency is improved in the automobile. The power consumption will be improved and the economic and energy saving effects will be secured.

  In addition, since the outside air dries in the winter and dry seasons, humidification is essential for ventilation in the consumer sector. An ultrasonic humidifier or the like is used for indoor humidification, but there is a problem that not only the power consumption increases but also the indoor temperature decreases. In contrast, if the moisture contained in the air exhausted from the room to the outside is selectively separated and recovered, and this can be added to the introduction air from the outside air with minimal energy use, the humidification load is reduced, which also saves energy. An effect is obtained.

  For example, in the following Patent Document 1, a dehumidifying inlet that sucks indoor air, a dehumidifying outlet that blows air sucked from the dehumidifying inlet, a ventilation inlet that sucks indoor air, and indoor air Air is exhausted to the outside, and the air that passes through the air passage that connects the dehumidification inlet and the dehumidification outlet and absorbs moisture from the air and connects the ventilation inlet and the ventilation outlet. The exhaust air before passing through the dehumidifying element is heated in order to dehumidify the air passing through the air passage connecting the suction inlet for ventilation and the exhaust outlet for ventilation, and the dehumidifying element for dehumidifying the air passing through the passage. In addition, a dehumidification / ventilation system has been proposed that includes a heating means for drying and dehumidifies indoor air using exhaust air to the outdoors, and can switch between ventilation operation and dehumidification ventilation operation.

Further, in the following Patent Document 2, in an air conditioning system in which at least two desiccants are respectively disposed in the processing air path and the regeneration air path, the moisture in the processing air is adsorbed on the one hand and the other is regenerated by the regeneration air. An air conditioning system has been proposed in which the two desiccants are moved relative to the processing air path and the regeneration air path so that the flow of the processing air and the regeneration air to the desiccant portion can be switched.
JP 2003-294267 A JP-A-10-9633

  In the ventilation system described in Patent Document 1, in order to dry (regenerate) the dehumidifying element, it is necessary to pass air having a low relative humidity. Therefore, heat energy such as electricity or city gas for heating the passing air is used. There was a problem that it was necessary and consumed a lot of energy. Further, the air conditioning system described in Patent Document 2 has a complicated flow path configuration using a switching valve, and there is a problem in that the equipment is increased in size.

  Furthermore, as described in Patent Documents 1 and 2 described above, in many ventilation systems using a dehumidifying material, when moisture is adsorbed by the dehumidifying material, the heat of adsorption of the dehumidifying material is generated and the temperature of the passing air rises, Since the relative humidity is lowered, there is a problem that the moisture adsorption effect of the dehumidifying material is lowered. On the other hand, when the dehumidifying material is regenerated, the dehumidifying material absorbs heat due to the moisture desorbing action, the temperature of the passing air decreases, and the relative humidity increases, so that the moisture desorbing efficiency of the dehumidifying material decreases.

  In order to solve such problems, the conventional desiccant system requires a separate device for heat removal and heating of the dehumidifier, which increases energy consumption and makes the system more complex and larger. There was a problem of cost increase due to the conversion.

  In recent years, total heat exchangers that utilize the characteristics of giving heat and moisture from the air passing through one surface to the air passing through the other surface via a water vapor permeable membrane are commercially available, contributing to energy saving. . However, during heat exchange, the problem of reflux to the supply side of VOC, odor molecules, viruses, etc. contained in the exhaust gas has been pointed out from the characteristic of moisture exchange as latent heat, which has a hygiene problem.

  In this way, we use a great deal of energy for humidity conditioning and air conditioning, and if we can build hygienic dehumidification, humidification means and heat exchange means to improve this, we will be more comfortable, including global warming problems. A safe and comfortable living environment can be secured at low cost.

  Accordingly, a main object of the present invention is to provide a desiccant ventilation system which can efficiently absorb and desorb moisture from a dehumidifying material, improve energy efficiency, and is compact with a simple structure.

In order to solve the above-mentioned problem, as the present invention according to claim 1, one side duct and the other side duct are independently formed in order to perform supply of outside air and exhaust of indoor air in parallel, and these one side ducts are formed. In the part where the duct on the other side and the duct on the other side are close to each other, the dehumidifying material is applied, impregnated or adhered on both sides in the casing to which both ducts are connected, and the dehumidifying material disposed on one side surface At the same time as the dehumidification of the circulating air, the circulating air is humidified by the dehumidifying material disposed on the other side surface, and the dehumidifying heat of the dehumidifying material disposed on the one side surface conducts heat to dehumidify the dehumidifying material on the other side surface. Heating promotes the moisture desorption effect of the dehumidifying material, and a plurality of flow paths partitioned into layers by a large number of heat-exchangeable heat transfer sheets having no air permeability are formed. Side duct and One side duct and the other side duct communicate with each other in one side diagonal relationship, and one side duct and the other side communicate with each other. The first flow path in which the side duct is closed and the one side duct and the other side duct communicate with each other in a diagonal relationship with the other side, and the one side duct and the other side duct are closed in a one side diagonal relationship. And the second flow paths are alternately formed, and the first flow path and the second flow path have a plane angle difference of approximately 90 degrees in a plane, and the first flow path, the second flow path, and A moisture adsorption / desorption device that is rotatably supported around an axis perpendicular to the duct is disposed,
By rotating the moisture adsorption / desorption device approximately 90 degrees around the axis at predetermined time intervals, the first flow path is used as an air supply flow path to flow from one duct to the other duct, and the second flow path is A state of flowing from one side duct to the other side duct as an exhaust flow path, a state of flowing the second flow path from the one side duct to the other side duct as an air supply flow path, and the first flow path as an exhaust flow path on one side There is provided a desiccant ventilation system characterized in that it can be alternately switched between a state in which it is circulated from the duct to the other side duct.

  According to the first aspect of the present invention, among the two sets of diagonal relationships that intersect, the first flow path and the second flow path are alternately orthogonal so as to have a direction angle difference of approximately 90 degrees in a plane. It is a desiccant ventilation system having a so-called cross-flow type moisture absorption / desorption device.

In the first aspect of the present invention, the dehumidifying material is applied, impregnated, or adhered to both sides, and the dehumidifying material provided on one side dehumidifies the circulating air, and at the same time, the dehumidifying material provided on the other side. Circulating air is humidified by the material, and the moisture absorption heat of the dehumidifying material disposed on one side is conducted to heat the dehumidifying material on the other side to promote the moisture desorption action of the dehumidifying material and to have air permeability. By forming a large number of air supply passages and exhaust passages divided in layers by a large number of heat exchange sheets that can exchange heat, the heat of adsorption accompanying moisture adsorption of the dehumidifying material in the air supply passages is reduced by the dehumidification. The heat is transferred to the dehumidifying material in the exhaust passage through the heat transfer sheet in contact with the material. As a result, the dehumidifying material in the air supply channel is cooled to promote moisture adsorption, and the dehumidifying material in the exhaust channel is heated to facilitate desorption (regeneration) of the adsorbed moisture. Moisture adsorption / desorption can be performed efficiently and energy efficiency can be improved.

  In addition, since the flow path is switched by rotating the moisture adsorption / desorption device approximately 90 degrees around the axis every predetermined time, the desiccant ventilation system can be made compact with a simple structure. become able to.

  As a second aspect of the present invention, a flat plate or a corrugated sheet is used as a heat transfer sheet that partitions the first flow path and the second flow path, and / or a spacer or a corrugated sheet is disposed between the heat transfer sheets. The desiccant ventilation system according to claim 1, wherein the desiccant ventilation system is provided and / or a dehumidifying material is applied, impregnated or adhered to a surface of the spacer or corrugated plate.

  According to the second aspect of the present invention, the contact area between the circulating air and the dehumidifying material is increased by forming the heat transfer sheet on the corrugated sheet or by arranging the spacer or the corrugated sheet between the heat transfer sheets. The dehumidifying effect can be improved, and the effect of rectifying circulating air and increasing the strength of each flow path are exhibited.

As a third aspect of the present invention, there is provided a heat exchange device that performs heat exchange between the supply air and the exhaust gas across the one side duct and the other side duct on the indoor side of the casing arrangement portion. A desiccant ventilation system according to claim 1 or 2 is provided.

In the present invention described in claim 3 , after the heat exchange between the circulation air that has passed through the moisture adsorption / desorption device and the humidity adjusted, and the room air, the heat is supplied to the room, so that the room air conditioner with ventilation is supplied. The load can be reduced and the energy efficiency can be improved.

As the present invention according to claim 4 , the heat transfer sheet, the spacer or the corrugated sheet is impregnated with a suspension in which a dehumidifying material formed into fine particles having a diameter of 0.1 mm or less is impregnated, and then dried and fixed. The desiccant ventilation system according to any one of claims 1 to 3 , wherein the desiccant ventilation system is a fibrous sheet of fiber, plant fiber, animal fiber, and / or chemical fiber.

According to the fourth aspect of the present invention, the heat transfer sheet, the spacer, or the corrugated sheet is composed of a fibrous sheet impregnated with the dehumidifying material, so that the dehumidifying material can efficiently absorb and desorb moisture. The heat transfer between the heat transfer sheets is efficiently performed.

As a fifth aspect of the present invention, the microwave irradiating device is configured to irradiate the moisture absorbing / desorbing device with microwaves in the vicinity of the moisture absorbing / desorbing device while the moisture absorbing / desorbing device is made of a non-conductive material. A desiccant ventilation system according to any one of claims 1 to 4 is provided.

In the present invention described in claim 5 , by irradiating the microwave with the microwave irradiation device, the water molecules adsorbed in the dehumidifying material and the moisture adsorption / desorption device are excited and heated, and accumulated in the moisture adsorption / desorption device. It is possible to desorb and discharge substances such as moisture, chemical substances, and odor molecules. This makes it possible to efficiently regenerate the dehumidifying material and keep the inside of the moisture absorption / desorption device hygienic.

According to the sixth aspect of the present invention, when the moisture adsorption / desorption device is rotated to switch between the air supply passage and the exhaust passage, the moisture adsorption / desorption device and the one side duct or the other side duct are properly used. The desiccant ventilation system according to any one of claims 1 to 5, further comprising a detection mechanism that detects a simple connection position and a control unit that controls rotation of the moisture adsorption / desorption device according to the detection result.

  As described above, according to the present invention, it is possible to efficiently perform moisture adsorption / desorption of the dehumidifying material, improve energy efficiency, and provide a compact desiccant ventilation system with a simple structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First embodiment]
(Configuration of Desiccant Ventilation System 1)
The structure of the desiccant ventilation system 1 which concerns on the 1st example of this invention is explained in full detail based on FIGS. 1-3. 1 is a side view of a desiccant ventilation system 1A according to a first embodiment of the present invention, FIG. 2 is a horizontal sectional view showing an air supply passage S thereof, and FIG. 3 is a horizontal sectional view showing an exhaust passage E thereof.

  The desiccant ventilation system 1A according to the first embodiment of the present invention is provided with one side ducts 4, 4 ′, 4 ″ and the other side ducts 5, 5 ′, 5 in order to perform supply of outside air and exhaust of indoor air in parallel. In the casing 6A in which both the ducts are connected to each other at the portion where the one side ducts 4, 4 ′ and the other side ducts 5, 5 ′ are close to each other. The dehumidifying material 7 is applied, impregnated, or adhered, and a large number of flow paths partitioned into layers are formed by a large number of heat exchange sheets 8A, 8A. Connects the one-side ducts 4, 4 ′ and the other-side ducts 5, 5 ′, and has two sets of diagonal relationships (one-side diagonals 4, 5 ′ and other-side diagonals 4 ′, 5). Of these, as shown in FIG. 2, the one-side duct 4 has a one-sided diagonal relationship. A first channel (used as an air supply channel S in the illustrated example) in which the other side duct 5 'is communicated and the one side duct 4' and the other side duct 5 are closed due to the other side diagonal relationship; 3, the one-side duct 4 ′ and the other-side duct 5 communicate with each other in the other-side diagonal relationship, and the one-side duct 4 and the other-side duct 5 ′ are closed in the one-side diagonal relationship. Second flow paths (used as exhaust flow paths E in the illustrated example) are alternately formed, and the first flow path and the second flow path have a direction angle difference of approximately 90 degrees in a plane, A so-called cross-flow type moisture adsorption / desorption device 2A, which is rotatably supported around the axis of a shaft 9A orthogonal to the first flow path, the second flow path, and the ducts 4,. .

  Then, the desiccant ventilation system 1A according to the first embodiment of the present invention rotates the moisture adsorption / desorption device 2A approximately 90 degrees around the axis of the shaft 9A every predetermined time, thereby causing the first flow path to flow. A state in which the air supply passage S is circulated from the one side duct 4 to the other side duct 5 ′, the second passage is circulated as the exhaust passage E from the one side duct 4 ′ to the other side duct 5, and the second flow The path is made to flow from the one side duct 4 to the other side duct 5 ′ as the air supply flow path S, and the state in which the first flow path is made to flow from the one side duct 4 ′ to the other side duct 5 alternately. Switching is possible.

  That is, as shown in FIGS. 4 and 5, the moisture adsorbing / desorbing device 2A includes a plurality of heat transfer sheets 8A, 8A,... Is formed by being divided into a large number of layers, and by switching the moisture adsorption / desorption device 2A about 90 degrees around the axis of the shaft 9A every predetermined time, the flow path is switched and incorporated. Moisture absorption and regeneration of the dehumidifying material 7 are alternately performed.

  Further, in the desiccant ventilation system 1A, the interior side of the casing 6A of the moisture adsorbing / desorbing device 2A is straddled between the one side ducts 4 ′, 4 ″ and the other side ducts 5 ′, 5 ″. A heat exchange device 3 that performs heat exchange between the supply air and the exhaust gas can be provided. The heat exchange device 3 can use various types of heat exchange devices that are generally used. In the illustrated example, a heat exchange device that performs heat exchange between the supply air and the exhaust gas by alternately forming the supply air flow passage and the exhaust flow passage through a plurality of heat exchangeable partition walls that do not have air permeability. It is.

  The one-side ducts 4, 4 ', 4 "and the moisture adsorption / desorption device 2A or the heat exchange device 3 are kept airtight by an airtight holding member (not shown) such as an air packing.

  As the dehumidifying material 7, conventionally known silica gel, zeolite, polymer dehumidifying material and the like can be used. In particular, in the present invention, among these various dehumidifying materials, in the 35 ° C. isothermal adsorption diagram, the maximum moisture absorption amount in the humidity region where the relative humidity is about 60% or more is the maximum moisture absorption amount in the humidity region where the relative humidity is about 30% or less. It is desirable to make it twice or more. As the dehumidifying material having such physical property values, a polymer dehumidifying material containing a specific amount of a potassium salt-type carboxyl group and composed of an organic polymer hygroscopic polymer having a crosslinked structure, for example, What is indicated by 2005-21840 gazette can be used. This makes it possible to sufficiently dehumidify and humidify the circulating air, and to reduce the size of the moisture adsorption / desorption device 2A.

  As the heat transfer sheet 8A, a flat plate or a corrugated plate can be used. The heat transfer sheet 8A is coated, impregnated, or bonded with a dehumidifying material 7 such as silica gel on both surfaces thereof. Specifically, the dehumidifying material is applied after being mixed with a binder, or a dehumidifying material having a diameter of 0.1 mm or less on a fibrous sheet such as glass fiber, plant fiber, animal fiber and / or chemical fiber. After impregnating the suspended suspension, it is desirable to fix by drying and fixing, or by adhering the powdered dehumidifying material in layers with an adhesive or the like.

  Further, instead of a configuration in which a dehumidifying agent is applied, impregnated or adhered to the heat transfer sheet 8A, a dehumidifying material such as silica gel that has been granulated, and a filler formed, for example, in a hollow shape in order to ensure air permeability The mixture is filled so that each flow path adjacent to the position where the heat transfer sheet 8A is disposed is in contact with the heat transfer sheet, and the inlet / outlet thereof has an opening smaller than the outer dimensions of the dehumidifying material and the filler. It may be arranged by being blocked by a conductive film or net.

  In this way, the dehumidifying material disposed on both surfaces of the heat transfer sheet 8A is dehumidified by the dehumidifying material disposed on the one side surface and simultaneously with the dehumidifying material disposed on the other side surface. Air is humidified. Moisture absorption heat of the dehumidifying material disposed on one side surface of the heat transfer sheet 8A (temperature increase accompanying moisture adsorption of the dehumidifying material) conducts heat through the heat transfer sheet 8A and heats the dehumidifying material on the other side surface. The moisture desorption effect of the dehumidifying material is promoted.

  Further, as shown in FIG. 6, a spacer 9a or corrugated plate 9b can be disposed between the heat transfer sheets 8A and 8A, and a dehumidifying material is applied and impregnated on the surface of the spacer 9a or corrugated plate 9b. Or you may make it adhere | attach. In this way, by forming the heat transfer sheet 8A on the corrugated sheet, or by disposing the spacer 9a or the corrugated sheet 9b between the heat transfer sheets, the contact area between the circulating air and the dehumidifying material is increased and the dehumidifying effect is obtained. In addition to being able to improve, there are effects of rectifying circulating air and increasing the strength of each flow path.

  As described above, the heat transfer sheet 8A efficiently conducts the heat of adsorption of the dehumidifying material disposed on one side surface to the dehumidifying material on the other side surface, so that a metal material or a nonmetallic material of a steel material or a nonferrous material is used. Among various industrial materials, those having excellent thermal conductivity, preferably materials having a thermal conductivity of 170 kcal / mh ° C. or higher are used. Further, in order to prevent circulating air flowing through one flow path and moisture contained therein from flowing into the other flow path, the heat transfer sheet 8A uses a material that does not transmit air or moisture.

  In the present invention, the moisture adsorption / desorption device 2A is made of a non-conductive material, and a microwave irradiation device (not shown) for irradiating the dehumidifying material 7 with microwaves in the vicinity of the moisture adsorption / desorption device 2A. ) Is desirable. By irradiating microwaves with the microwave irradiation device, water molecules adsorbed in the dehumidifying material 7 and the moisture adsorption / desorption device 2A are excited and heated, and moisture and chemical substances accumulated in the moisture adsorption / desorption device 2A are heated. Substances such as odor molecules can be desorbed and discharged. This makes it possible to efficiently regenerate the dehumidifying material 7 and to keep the moisture absorption / desorption device 2A hygienic.

  The safety ensuring means at the time of microwave irradiation by the microwave irradiation apparatus will be described. The main components of the moisture adsorption / desorption device 2A and the microwave irradiation device incorporating the dehumidifying material 7 are arranged in a casing, and a metal punching board or a conductive material is provided in an air duct serving as an outer surface or opening of the casing. By arranging the net-like sheet formed in (1), it is possible to prevent external leakage of microwaves. Further, by using a non-conductive material or a low dielectric constant material as a constituent material or a container material of the moisture adsorption / desorption device 2A including the dehumidifying material 7, discharge at the time of microwave irradiation by the microwave irradiation device In addition, problems such as microwave loss due to the generation of eddy currents, and concentration of microwaves on the dielectric can be prevented, and moisture, chemical substances or moisture from the dehumidifying material 7 and the moisture adsorption / desorption device 2A due to microwave irradiation can be prevented. Odor molecules can be desorbed efficiently.

  As shown in FIGS. 2 and 3, an air supply fan 10 and an exhaust fan 11 for supplying and exhausting air are disposed in each flow path, respectively. When switching modes, the air supply fan 10 and the exhaust fan 11 disposed in each flow path are stopped at the start of switching of the moisture adsorption / desorption device 2A, and when the switching of the moisture adsorption / desorption device 2A is completed. It is desirable to restart.

  Further, when the moisture adsorption / desorption device 2A is switched, it is detected whether or not the casing 6A of the moisture adsorption / desorption device 2A is properly connected to the ducts 4, 4 ′, 5, 5 ′ of the respective flow paths. For example, it is preferable to include a detector (not shown) such as a proximity switch or a limit switch, and a control means for controlling the rotation angle of the rotating shaft 9A based on the detection result. Further, at least one or more of the moisture adsorption / desorption device 2A and the air ducts 4, 4 ′, 5 and 5 ′ connected thereto are provided with fixing means (not shown) for fixing both. Is desirable.

(Operating state of desiccant ventilation system 1A)
Next, the operation state of the desiccant ventilation system 1A will be described in detail below.
In the desiccant ventilation system 1A according to the present invention, the supply of outside air and the exhaust of room air are performed in parallel by forming ducts for supplying or exhausting air independently.

  In the case of the summer operation, in the air supply passage S, the hot and humid outside air is stratified by a large number of heat transfer sheets 8A, 8A ... in the moisture absorption / desorption device 2A through the duct 4 on one side by the air supply fan 10. It distribute | circulates and guides to many division | segmentation air supply flow paths S, S ..., contacts the dehumidification material 7 incorporated in this air supply flow path S, and flows, dehumidifying. Thereafter, the air that has passed through the moisture adsorption / desorption device 2A is sent to the heat exchange device 3 through the duct 5 ′ on the other side, cooled by heat exchange between the circulating air and room air, and then supplied to the room. .

  On the other hand, in the exhaust flow path E, the indoor air is led to the heat exchange device 3 through the duct 5 ″ on the other side by the exhaust fan 11 and heated by heat exchange with the circulating air in the supply air flow path S. Thereafter, the air is sent to the moisture adsorption / desorption device 2A through the one side duct 4 ', and the circulating air introduced into the exhaust passage E of the moisture adsorption / desorption device 2A desorbs (regenerates) moisture from the built-in dehumidifying material 7. After that, it is discharged outside.

  Here, the heat of adsorption accompanying the moisture adsorption of the dehumidifying material 7 in the air supply channel S of the moisture adsorption / desorption device 2A is transferred to the dehumidifying material 7 in the exhaust channel E via the heat transfer sheet 8A in contact with the dehumidifying material 7. Heat conduction. As a result, the dehumidifying material 7 in the air supply passage S is cooled to promote moisture adsorption, and the dehumidifying material 7 in the exhaust passage E is heated to promote desorption (regeneration) of the adsorbed moisture. .

  Along with the operation by the above-described flow path configuration, a large amount of moisture is adsorbed to the dehumidifying material 7 disposed in the air supply flow path S. Therefore, it is possible to regenerate the dehumidifying material 7 disposed in the supply air flow path S by switching the flow paths to each other at predetermined time intervals. As described above, the flow path is switched by rotating the moisture adsorption / desorption device 2A about 90 degrees around the axis of the shaft 9A. By switching the flow path, the first flow path that has been used as the supply flow path S until now becomes the exhaust flow path E, and the second flow path that has been used as the exhaust flow path until now is the supply flow path. S. And the dehumidification material 7 which performed the dehumidification of the circulation air (supply air) in the supply air flow path S is reproduced | regenerated by desorbing | moisture_content with circulation air (exhaust).

  Next, the amount of moisture absorbed and desorbed by the dehumidifying material 7 in the moisture adsorption / desorption device 2A will be discussed based on FIGS. In general, in the dehumidifying process where the outside air (point A in Fig. 7: temperature 30 ° C, relative humidity 65% RH, water content 18g / kg) is dehumidified to room air with relative humidity 40% RH by the desiccant of the desiccant device. As shown in FIG. 7, the heat insulation changes from point A to point B, and the amount of moisture to be dehumidified is about 3 g / kg (= 18 g / kg-15 g / kg). On the other hand, in the case of the moisture adsorption / desorption device 2A according to the present invention, as described above, the heat of adsorption accompanying moisture adsorption of the dehumidifying material 7 is thermally conducted through the heat transfer sheet 8A. A dehumidifying process from A to point D, and the amount of water to be dehumidified is about 10 g / kg (= 18 g / kg-8 g / kg), which can be greatly increased from the above-mentioned general desiccant device.

  On the other hand, when the dehumidifying material is regenerated by room air (point D in FIG. 8: temperature 24 ° C., relative humidity 40% RH, water content 8 g / kg), in a general desiccant device, as shown in FIG. The adiabatic change from point D to point F, and the amount of moisture to be desorbed is about 1 g / kg (= 9 g / kg-8 g / kg). On the other hand, in the case of the moisture adsorption / desorption device 2A according to the present invention, as described above, the moisture desorption of the dehumidifying material 7 is promoted by the heat of adsorption conducted through the heat transfer sheet 8A. In the regeneration process from point D to point A, the amount of water to be desorbed is about 10g / kg (= 18g / kg-8g / kg), which can be significantly increased from the above-mentioned general desiccant equipment, and dehumidifying material 7 can be made substantially equal to the amount of water adsorbed and the amount of water desorbed.

  In the moisture adsorbing / desorbing device 2A according to the present invention, the amount of moisture absorbed and desorbed by the dehumidifying material is the amount of the dehumidifying material 7 applied, impregnated or adhered to the heat transfer sheet 8A or the dehumidifying material filled in each flow path. 7 can be easily adjusted by forming the heat transfer sheet 8A into a corrugated shape or by arranging the spacer 9a or the corrugated plate 9b.

  In the case of winter operation, the flow path configuration is the same as that in the case of summer operation described above, but is different in terms of temperature and humidity transfer. Specifically, in the air supply passage S, the low-temperature and low-humidity outside air is stratified by a large number of heat transfer sheets 8A, 8A ... in the moisture adsorption / desorption device 2A through the duct 4 on one side by the air supply fan 10. It distribute | circulates and guides to many division | segmentation air supply flow paths S, S ..., and it flows, contacting with the dehumidification material 7 incorporated in this air supply flow path S, and humidifying (the dehumidification material 7 is reproduced | regenerated). Thereafter, the air that has passed through the moisture adsorption / desorption device 2A is sent to the heat exchange device 3 through the duct 5 'on the other side, heated by this heat exchange between the circulating air and room air, and then supplied to the room. .

  On the other hand, in the exhaust flow path E, the indoor air is led to the heat exchange device 3 through the duct 5 ″ on the other side by the exhaust fan 11 and cooled by heat exchange with the circulating air in the supply air flow path S. Thereafter, the air is introduced to the moisture adsorption / desorption device 2A through the one side duct 4 ', and the circulation air introduced into the exhaust passage E of the moisture adsorption / desorption device 2A is adsorbed by the built-in dehumidifying material 7, It is discharged outside.

  Here, as in the case of the summer operation described above, the heat of adsorption accompanying the moisture adsorption of the dehumidifying material 7 in the exhaust flow path E of the moisture adsorption / desorption device 2A is via the heat transfer sheet 8A in contact with the dehumidifying material 7. The heat is conducted to the dehumidifying material 7 in the air supply channel S. As a result, the dehumidifying material 7 in the exhaust passage E is cooled to promote moisture adsorption, and the dehumidifying material 7 in the air supply passage S is heated to promote desorption (regeneration) of the adsorbed moisture. .

[Reference form example]
The configuration of the desiccant ventilation system 1B according to the reference embodiment of the present invention will be described in detail with reference to FIGS. FIG. 9 is a plan view of a desiccant ventilation system 1B according to a reference embodiment of the present invention, FIG. 10 is a horizontal sectional view showing the air supply passage S, and FIG. 11 is a horizontal sectional view showing the exhaust passage E.

  The desiccant ventilation system 1B according to the reference embodiment of the present invention is different from the desiccant ventilation system 1A according to the first embodiment in terms of the flow path configuration and the switching of the flow path of the moisture adsorption / desorption device. Specifically, as shown in FIG. 10, the desiccant ventilation system 1B according to the reference embodiment of the present invention includes the one-side ducts 4, 4 ′ and the like in order to perform supply of outside air and exhaust of indoor air in parallel. The other side ducts 5 and 5 'are formed independently, and the one side ducts 4 and 4' and the other side ducts 5 and 5 'are disposed in parallel to cross both the ducts. A dehumidifying material 7 is applied, impregnated, or adhered in a casing 6B having a predetermined length to which the gas is connected, and is partitioned in layers by a large number of heat transfer sheets 8B, 8B,. A large number of flow paths are formed, and the layered flow paths connect the one side ducts 4, 4 ′ and the other side ducts 5, 5 ′. Due to the relationship between the one side duct 4 and the other side duct 5 ' The first flow path (used as the air supply flow path S in the illustrated example) in which the one side duct 4 ′ and the other side duct 5 are closed due to the other side diagonal relationship, as shown in FIG. A second flow path in which the one-side duct 4 ′ and the other-side duct 5 communicate with each other in a side diagonal relationship, and the one-side duct 4 and the other-side duct 5 ′ are closed in a one-side diagonal relationship (illustrated example) Are used as the exhaust flow path E) alternately and are supported around the axis of the central axis 9B parallel to the duct.

Then, the desiccant ventilation system 1B according to the reference embodiment of the present invention supplies the first flow path by rotating the moisture adsorption / desorption device 2B approximately 180 degrees around the axis of the shaft 9B every predetermined time. A state in which the air flow path S is circulated from the one side duct 4 to the other side duct 5 ′, the second flow path is circulated as the exhaust flow path E from the one side duct 4 ′ to the other side duct 5, and the second flow path As an air supply flow path S and alternately switch between a state in which the first flow path is circulated from the one side duct 4 ′ to the other side duct 5 as the exhaust flow path E. Make it possible.
In the above example, the supply air and the exhaust are circulated so as to face each other. However, a parallel flow type in which the supply air and the exhaust are circulated in parallel may be used. In this case, the first flow path is used as the air supply flow path S to flow from the one side duct 4 to the other side duct 5 ′, and the second flow path is used as the exhaust flow path E from the other side duct 5 to the one side duct 4. And the second flow path as the supply flow path S from the one side duct 4 to the other side duct 5 ′, and the first flow path as the exhaust flow path E from the other side duct 5 to the one side The state of circulation to the duct 4 ′ can be switched alternately.

  As shown in FIG. 12, the moisture adsorption / desorption device 2B includes a plurality of heat supply sheets 8B, 8B,... In a cylindrical casing 6B. The moisture absorbing / desorbing device 2B is rotated by approximately 180 degrees around the axis of the shaft 9B every predetermined time, so that the flow path is switched and the moisture absorbing material 7 incorporated therein absorbs moisture. And playback are alternated. In addition, you may make it provide the header part 13 by which the air supply flow path S and the exhaust flow path E were partitioned off by the partition plate 12 in the entrance side and exit side of the said moisture adsorption / desorption apparatus 2B. By providing the header portion 13 in this way, mixing and leakage of the circulating air in each flow path can be prevented, and the connection work of the connected ducts 4, 4 ', 5 and 5' is facilitated.

[Other examples]
(1) In the first embodiment, the moisture adsorbing / desorbing device 2A is provided with the heat transfer sheet 8A formed in a circular shape, but as shown in FIGS. 13 and 14, it is formed in a square shape. It is good also as the moisture adsorption / desorption device 2C provided with the heat transfer sheet 8C. With this configuration, the heat transfer sheet 8C can be easily manufactured, and when the heat transfer sheet 8C is installed in the casing 6C, the heat transfer sheet 8C can be visually observed from the outside. The proper position of can be visually confirmed.

1 is a side view of a desiccant ventilation system 1A according to a first embodiment of the present invention. 3 is a horizontal sectional view showing the air supply flow path S. FIG. 3 is a horizontal sectional view showing the exhaust flow path E. FIG. It is a perspective view of 2 A of moisture adsorption / desorption apparatuses which concern on the 1st form example of this invention. FIG. 5 is a VV cross-sectional view of FIG. 2. It is an arrangement | positioning state figure of (A) spacer (B) corrugated board arrange | positioned between heat-transfer sheets. It is an air diagram which shows the state change of the air supply which passes a moisture absorption / desorption apparatus at the time of a summer driving | operation. It is an air diagram which shows the state change of the exhaust_gas | exhaustion which passes a moisture absorption / desorption apparatus at the time of a summer driving | operation. It is a top view of the desiccant ventilation system 1B which concerns on the reference form example of this invention. 3 is a horizontal sectional view showing the air supply flow path S. FIG. 3 is a horizontal sectional view showing the exhaust flow path E. FIG. It is the perspective view of the (A) moisture absorption / desorption device 2B which concerns on the reference form example of this invention, (B) The enlarged view of the header part 13. FIG. It is a longitudinal cross-sectional view in the air supply flow path S of the desiccant ventilation system 1C which concerns on another form example. It is a perspective view of moisture absorption / desorption device 2C concerning other examples.

1A, 1B, 1C ... Desiccant ventilation system, 2A, 2B, 2C ... Moisture absorption / desorption device, 3 ... Heat exchange device, 4'4 ', 4 "... Air supply duct, 5/5', 5" ... Exhaust duct, 6A, 6B, 6C ... casing, 7 ... dehumidifying material, 8A, 8B, 8C ... heat transfer sheet, 9A, 9B ... shaft, 10 ... air supply fan, 11 ... exhaust fan

Claims (6)

One side duct and the other side duct are formed independently to supply outside air and exhaust indoor air at the same time, and the one side duct and the other side duct straddle between both ducts. At the same time, a dehumidifying material is applied, impregnated or adhered to both sides in a casing to which both ducts are connected, and the circulating air is dehumidified by the dehumidifying material provided on one side, and at the same time provided on the other side. The dehumidifying material humidifies the circulating air, and the moisture absorption heat of the dehumidifying material disposed on one side is conducted to heat the dehumidifying material on the other side to promote the moisture desorption action of the dehumidifying material , and also breathability A large number of flow paths partitioned into layers are formed by a large number of heat-exchangeable heat transfer sheets that do not have a cross section, and the layered flow paths connect two ducts that intersect one side duct and the other side duct. Diagonal relationship A first channel in which the one-side duct and the other-side duct are communicated with each other in a one-side diagonal relationship, and the one-side duct and the other-side duct are closed in the other-side diagonal relationship; In this relationship, the one side duct and the other side duct communicate with each other, and the second flow path in which the one side duct and the other side duct are closed in a one side diagonal relationship is alternately formed, and the first flow The channel and the second channel have a difference in direction angle of approximately 90 degrees in a plane, and the moisture absorption is supported rotatably around the axis perpendicular to the first channel, the second channel, and the duct. Place the escape device,
By rotating the moisture adsorption / desorption device approximately 90 degrees around the axis at predetermined time intervals, the first flow path is used as an air supply flow path to flow from one duct to the other duct, and the second flow path is A state of flowing from one side duct to the other side duct as an exhaust flow path, a state of flowing the second flow path from the one side duct to the other side duct as an air supply flow path, and the first flow path as an exhaust flow path on one side A desiccant ventilation system characterized in that it can be switched alternately between a duct and a state of circulation from the duct to the other duct.   A flat plate or a corrugated sheet is used as the heat transfer sheet that partitions the first flow path and the second flow path, and / or a spacer or a corrugated sheet is disposed between the heat transfer sheets, and / or the spacer or The desiccant ventilation system according to claim 1, wherein a dehumidifying material is applied, impregnated or adhered to the surface of the corrugated plate. In the indoor side of the casing disposed position of the one hand across the side duct and the other duct, claim are disposed a heat exchanger occupying perform heat exchange between the exhaust and supply air 1-2 The desiccant ventilation system according to any one of the above. The heat transfer sheet, spacer or corrugated sheet is impregnated with a suspension in which a dehumidifying material formed in a fine particle shape with a diameter of 0.1 mm or less is impregnated, and then dried and fixed to glass fiber, plant fiber, animal fiber and / or Or it is a fibrous sheet, such as a chemical fiber, The desiccant ventilation system in any one of Claims 1-3 characterized by the above-mentioned. The moisture absorption / desorption device is made of a non-conductive material, and a microwave irradiation device for irradiating the moisture absorption / desorption device with microwaves is provided in the vicinity of the moisture absorption / desorption device. The desiccant ventilation system in any one of 1-4 . A detection mechanism for detecting an appropriate connection position between the moisture adsorption / desorption device and the one side duct or the other side duct when the moisture adsorption / desorption device is rotated to switch between an air supply channel and an exhaust channel; The desiccant ventilation system according to any one of claims 1 to 5, further comprising control means for controlling rotation of the moisture adsorption / desorption device according to the detection result.

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