JP2007170786A - Ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight and compact ventilation system with easy maintenance, carrying out efficient ventilation by shortening an operation time required for drying (regenerating) a dehumidification material in a desiccant device capable of carrying out ventilation while carrying out exchange of humidity and temperature between indoor air and outside air to prevent increase of an air conditioning load following reinforcement of ventilation. <P>SOLUTION: A passage is composed such that in the summer season or the rainy season, the outside air 2 is dehumidified via a moisture absorption and desorption device part 4, it is passed through a heat storage device part 7 to be cooled, and then supplied to a room during air supply mode operation, and during exhaust mode operation, regeneration operation is carried out to dry (regenerate) the dehumidification material 1. In the winter season, the regeneration operation to dry (regenerate) the dehumidification material 1 is carried out during the air supply mode operation, and the indoor air 3 is passed through the heat storage device part 7, it is passed through the moisture absorption and desorption device part 4 to be dehumidified, and then discharged to an exterior during the exhaust mode operation. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ventilation system capable of ventilating indoor air while maintaining indoor spaces such as a residence, office, commercial facility, gymnasium, and event venue in a comfortable temperature and humidity state.

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

  In particular, the number of air conditioners installed in the consumer sector (household and business) is increasing, and the amount of energy used (especially the amount of power used) is increasing. Efficiency improvement is an urgent issue.

  However, the high airtightness of houses and office buildings, which is being implemented as part of energy conservation measures in the consumer sector, has caused adverse effects such as sick house syndrome caused by harmful chemical substances generated from furniture and building materials. Introduced as a measure to strengthen ventilation (standards) in homes. However, an effective ventilation system is indispensable because enhanced ventilation leads to an increase in air conditioning load due to outside air, particularly latent heat load such as dehumidification and humidification.

In recent years, desiccant humidity control technology has been proposed that does not rely on cooling dehumidification or ultrasonic humidification for air conditioning. For example, in Patent Document 1 below, an air-conditioning system in which two desiccants are alternately switched between treated air and regenerated air so as to be able to flow, while moisture in the treated air is adsorbed and regenerated with regenerated air on the other hand. , The high-temperature heat source of the heat pump is disposed in the regeneration air path to heat the regeneration air, the low-temperature heat source of the heat pump is disposed in the processing air path to cool the processing air, and the processing air after passing through the desiccant and before passing through the desiccant An air conditioning system provided with a heat exchanger that exchanges sensible heat with regenerated air is described.
JP 9-318127 A

  However, the desiccant air conditioning system described in Patent Document 1 has a problem that it takes time to dry (regenerate) the dehumidifying material. For this reason, in order to speed up the moisture absorption and drying cycle, a large amount of dehumidifying material is required, and installation in a limited space is difficult.

  In addition, most of the dehumidifying materials used in conventional desiccant humidity control devices are those that solidify by heating after molding a clay-like substance containing a hygroscopic material (so-called baked goods). The product was not popular because of poor yield and high price as a result.

  By the way, in areas with hot and humid seasons such as Japan and Southeast Asia, the air to be treated is cooled to below the dew point with an air conditioner for dehumidification, and the moisture (water vapor) in the air is condensed and converted to water and removed. I am driving.

In general, the cooling theory COP (coefficient of performance) of an air conditioner is defined by the following equation based on the evaporation temperature (Teva) and the condensation temperature (Tcon) of the working medium.
(Theoretical COP) = (Teva) / [(Tcon) − (Teva)] (however, the temperature is an absolute temperature).

  For this reason, when the dehumidifying operation is performed by the air conditioner, the condensation temperature (Tcon) is determined by the outside air temperature, but the evaporation temperature (Teva) needs to be lower than the dew point, and the cooling theory COP becomes small. The energy efficiency was deteriorating.

  Therefore, if it is not necessary to dehumidify the air conditioner, the air conditioner simply needs to lower the air temperature to the target temperature, and it also releases from the load that cools the air to the low temperature range, including the load that removes the latent heat of condensation. Is done.

For example, in summer operation (eg, when the outside air at a temperature of 33 ° C and a relative humidity of 60% is cooled to a temperature of 26 ° C and a relative humidity of 50%) and Teva = 8 ° C and Tcon = 43 ° C,
(Theoretical COP) = (8 + 273) / (43−8) = 8.0.
On the other hand, if dehumidification is not required, Teva = 19 ° C and Tcon = 43 ° C.
(Theoretical COP) = (19 + 273) / (43-19) = 12.2.
The theoretical efficiency increases by 50%, and the cooling load does not contain the heat of condensation, so the energy consumption of the air conditioner can be greatly improved.

  Similarly, since the outside air dries in the winter and dry seasons, humidification is essential for ventilation. An ultrasonic humidifier or the like is used for indoor humidification, but there is a problem that it involves power consumption. On the other hand, if moisture contained in the air exhausted from the room to the outside air can be separated and recovered and added to the introduced air from the outside air, the humidification load is reduced, and energy saving is also ensured.

  As described above, a great amount of electric power is used for humidity adjustment in our living environment, and dehumidification associated with ventilation, efficiency of humidification means, and energy saving are effective for global warming countermeasures.

  Therefore, a main problem of the present invention is to dry (regenerate) the dehumidifying material in a desiccant device that can ventilate while exchanging humidity and temperature between room air and outside air in order to prevent an increase in air conditioning load accompanying enhanced ventilation. Is to reduce the operation time required for efficient ventilation and provide a lightweight and compact ventilation system that is easy to maintain.

  In order to solve the above-mentioned problem, as a first aspect of the present invention, in a ventilation system having an air supply mode for supplying outside air to a room and an exhaust mode for discharging indoor air to the outside, a dehumidifying material is incorporated in the circulation air. A moisture storage / desorption device unit that dehumidifies from the air or humidifies the circulation air, and a heat storage device unit that incorporates a heat storage body and cools the circulation air or heats the circulation air. There is provided a ventilation system characterized by alternately performing an air supply mode operation via the device section and at least an exhaust mode operation via the heat storage device section.

  In the first aspect of the present invention, the apparatus includes a moisture adsorption / desorption device unit and a heat storage device unit, and alternately and repeatedly operates an air supply mode for supplying outside air to the room and an exhaust mode for discharging indoor air to the outside. Thus, indoor ventilation can be performed while exchanging the temperature and humidity between the outside air and the room air throughout the year, and the temperature and humidity of the room air can be maintained and the energy efficiency of the air conditioning load can be improved.

  According to a second aspect of the present invention, in the air supply mode operation, the outside air that has passed through the moisture absorption / desorption device section is supplied to the room after passing through the heat storage device section, and in the exhaust mode operation, the outside air passes through the heat storage apparatus section. 2. The flow path structure according to claim 1, wherein the indoor air is discharged directly to the outside after passing through the moisture adsorption / desorption device section or without passing through the moisture adsorption / desorption device section. A ventilation system is provided.

  The present invention according to claim 2 shows specific flow path configurations during the supply mode operation and the exhaust mode operation of the ventilation system according to claim 1.

  As the present invention according to claim 3, in a condition in which the outside air contains a relatively large amount of moisture as compared with room air, the outside air is dehumidified through the moisture adsorption / desorption device during the air supply mode operation, 3. A flow path configuration that is supplied to a room after being cooled through the heat storage device section, and a regeneration operation for drying (regenerating) the dehumidifying material during the exhaust mode operation is performed. A ventilation system according to any of the above is provided.

  As the present invention according to claim 4, in a condition in which the indoor air contains a relatively large amount of moisture compared to the outside air, a regeneration operation for drying (regenerating) the dehumidifying material during an air supply mode operation is performed, 3. A flow path configuration in which room air is exhausted to the outside after being dehumidified via the heat storage device unit and then dehumidifying via the moisture absorption / desorption device unit during exhaust mode operation. A ventilation system as described above is provided.

  The present invention described in claim 3 shows a flow path configuration in a state where the outside air is humid as in the summer or rainy season, and the present invention described in claim 4 is similar to that in the winter or dry season. It shows the flow path configuration in a state where the outside air is dry. During the summer and rainy seasons, dehumidification is performed during the air supply mode operation, and regeneration operation is performed during the exhaust mode operation.In winter and dry season, regeneration operation is performed during the air supply mode operation, and heat storage and dehumidification are performed during the exhaust mode operation. In addition, the dehumidifying effect can be maintained by alternately performing the air supply mode operation and the exhaust mode operation.

  The present invention according to claim 5 is characterized in that a regeneration operation time for drying (regenerating) the dehumidifying material is set to half or less of an operation time of supply air or exhaust gas for dehumidifying the circulating air. 4. A ventilation system according to any one of 4 is provided.

  The present invention according to claim 5 enables efficient ventilation by setting the time required for the regeneration operation to half or less, preferably ¼ or less, more preferably ６ or less.

  As a sixth aspect of the present invention, the introduction means for guiding high-temperature air or hot exhaust discharged from existing equipment such as a general air conditioner, a water heater, and a power unit to the moisture absorption / desorption device, and / or a microwave in the dehumidifying material The ventilation system according to any one of claims 3 to 5, further comprising: a microwave irradiation device that irradiates the dehumidifying material, wherein the dehumidifying material is dried (regenerated) during the regeneration operation.

  The present invention according to claim 6 defines a heating means for the dehumidifying material for making the regeneration operation for drying (regenerating) the dehumidifying material highly efficient. That is, by means of introducing high-temperature air or hot exhaust discharged from existing equipment such as general air conditioners, water heaters, and power units into the dehumidifier and heating it, or by means of directly heating the dehumidifier by irradiating it with microwaves, It is intended to promote drying (regeneration) of the dehumidifying agent.

  As the present invention according to claim 7, the microwave irradiating device is capable of controlling a humidity detecting device that detects a moisture absorption state of the dehumidifying material, and the on / off or strength of the microwave that is irradiated according to the detected humidity. A ventilation system according to claim 6, further comprising a microwave control mechanism.

  The present invention according to claim 7 can optimize the microwave output in accordance with the degree of drying of the dehumidifying material by introducing a control means for changing on / off or intensity of the microwave to be irradiated with time. .

  As the present invention according to claim 8, the dehumidifying material in the moisture adsorption / desorption device is configured by dispersing and fixing a fine powder having a hygroscopic effect on a breathable sheet, or dissolving a substance having a hygroscopic effect. The liquid is adsorbed on a breathable sheet and then dried and crystallized, or a sheet-like dehumidifying agent is formed by weaving hygroscopic fibers. A ventilation system according to any one of claims 1 to 7 is provided.

  The present invention described in claim 8 shows a specific configuration of the dehumidifying material. By adopting such a configuration, the contact area between the dehumidifying material and the air is increased, the dehumidifying effect is improved, a water-absorbing / desorbing device that is lightweight and easy to manufacture is possible, and Maintenance can be facilitated by adopting a cassette exchange system for the dehumidifying material.

  As the present invention according to claim 9, an air flow path capable of exchanging heat through the dehumidifying material and a partition wall is installed in the outer wall of the box containing the dehumidifying material or inside the box, and the outside air is supplied to the air flow path. Alternatively, the ventilation system according to any one of claims 1 to 8, characterized in that high-temperature air or hot exhaust discharged from existing equipment such as a general air conditioner, a water heater, and a power unit is introduced.

  The present invention according to claim 9 defines a means for heating or cooling the dehumidifying material for carrying out the moisture absorption step by the dehumidifying material and the drying (regeneration) step of the dehumidifying material with high efficiency. That is, the dehumidifying material generates heat and generates heat in the moisture absorption process, but this temperature increase reduces the moisture absorption capacity. For this reason, introduction of means for increasing the drying efficiency by cooling the dehumidifying material in the moisture absorption step and heating the dehumidifying material in the drying (regeneration) step is effective in terms of the system configuration. In the present invention, an air channel capable of exchanging heat via a dehumidifying material and a partition wall is installed on the outer wall of the mold holding the dehumidifying material or inside the dehumidifying material, and the outside air or a general air conditioner (air conditioner) or a water heater is installed in the air channel. The dehumidifying material can be cooled or heated by introducing a relatively high temperature air or hot exhaust gas obtained from a power unit or the like.

  As described above, according to the present invention, in a desiccant device capable of ventilation while exchanging humidity and temperature between room air and outside air in order to prevent an increase in air conditioning load accompanying enhanced ventilation, drying of the dehumidifying material ( Efficient ventilation with reduced operation time required for regeneration is possible, and a lightweight, compact and easy-to-maintain ventilation system can be provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a configuration example of a ventilation system according to the present invention.

  A ventilation system VS according to the present invention includes a moisture absorption / desorption device section 4 that incorporates a dehumidifying material 1 and dehumidifies from circulation air or humidifies circulation air, and a heat storage body 8 that cools circulation air or heats circulation air. The heat storage device unit 7 is configured to perform an air supply mode operation in which the outside air 2 that has passed through the moisture adsorption / desorption device unit 4 passes through the heat storage device unit 7 and then is supplied indoors, and the heat storage device unit 7 The exhaust mode operation in which the indoor air 3 that has passed passes through the moisture adsorption / desorption device section 4 or is directly discharged to the outside without passing through the moisture adsorption / desorption device section 4 is repeated alternately.

  The flow path configuration of the ventilation system VS varies depending on the season of operation. That is, under the conditions of high temperature and high humidity in which the outside air 2 contains a relatively large amount of moisture as compared with the indoor air 3 such as in summer or in the rainy season, the outside air 2 causes the moisture adsorption / desorption device unit 4 to operate during the supply mode. The dehumidifying material 1 is dried and then recirculated, and the dehumidifying material 1 is dried (regenerated) during the exhaust mode operation. In addition, in a low temperature and low humidity condition in which the indoor air 3 contains a relatively large amount of water compared to the outside air 2 as in the winter season or the dry season, the dehumidifier 1 is dried (regenerated) during the air supply mode operation. The operation is performed, and the indoor air 3 is dehumidified through the heat storage device unit 7 and then through the moisture absorption / desorption device unit 4 during the exhaust mode operation, and then discharged to the outside. As a result, the hot and humid outside air 2 is supplied to the room in the summer and the rainy season, and the low temperature and low humidity outside air 2 is adjusted to the temperature and humidity in the winter and the dry season. The effect of is demonstrated.

[Configuration of ventilation system VS]
First, the configuration of the ventilation system VS will be described in detail. As shown in FIG. 1 and FIG. 2, the ventilation system VS includes a plurality of desiccant flow paths in which a dehumidifying material 1 such as silica gel is contained and functions to absorb and desorb moisture (humidity) of the outside air 2 or room air 3. 5A, 5A... And the desiccant channels 5A, 5A... Alternately intersecting with the partition walls, and an air channel having an action capable of exchanging heat so as to cool the temperature increased as the dehumidifying material 1 absorbs moisture. A moisture absorption / desorption device 4 composed of 5B, 5B, ..., a microwave irradiation device 6 having a function of forcibly desorbing moisture adsorbed by irradiating the dehumidifying material 1 with microwaves, and a heat storage body 8 It is mainly composed of a heat storage device 7 that is internally connected to the desiccant flow path 5A and adjusts the temperature of the gas by the action of heat dissipation and heat storage of the heat storage body 8 when the outside air 2 or the indoor air 3 passes. Yes. In addition, the connection portion between the desiccant flow path 5A of the ventilation system VS and the heat storage device 7 directly receives high-temperature air or hot exhaust discharged from the existing equipment 9 such as a general air conditioner (air conditioner), a water heater, and a power unit. An exhaust duct 10 for leading to the dehumidifying material 1 is connected, and high-temperature air is supplied at the time of moisture desorption (regeneration) of the dehumidifying material 1. A fan (not shown) for supplying and exhausting air is appropriately provided in each flow path.

  As shown in FIG. 2, the moisture adsorbing / desorbing device 4 includes desiccant channels 5A, 5A,... And air channels 5B, 5B,. Various dehumidifying materials 1 as will be described in detail below are disposed.

  As generally known, the dehumidifying material 1 may be a silica gel, zeolite or the like formed in a granular shape, and the dehumidifying material 1 is filled in the desiccant channel 5A so as to allow air to pass therethrough. Used. Furthermore, the moisture absorbent was dispersed and fixed using paper (especially highly air-permeable paper such as Japanese paper), nonwoven fabric, cloth, gauze, or the like, or by means of bonding to the surface of a thin resin plate. A three-dimensional dehumidifying material 1 having air permeability can be formed by bending a sheet three-dimensionally or by stacking a plurality of sheets via a spacer, and disposed in the desiccant flow path 5A. In addition, when the hygroscopic agent is a liquid, or is dispersed or dissolved in the liquid, the dehumidifying material 1 sucked into a three-dimensionally configured paper, nonwoven fabric, cloth, gauze, or the like It can be set as the dehumidification material 1 dried and crystallized.

  As described above, by using the dehumidifying material 1 in which the hygroscopic agent is dispersed and fixed in paper, non-woven fabric, cloth, gauze, etc., the contact area with the passing air is increased, so that moisture is adsorbed and desorbed to the dehumidifying material 1. It will be done efficiently. Also, with this configuration, the dehumidifying material 1 and the moisture absorbing / desorbing device 4 can be easily manufactured in a lightweight and compact structure, and the dehumidifying material 1 can be easily maintained by a cassette replacement system or the like. .

  In the present invention, in order to improve the efficiency of exchanging the temperature and humidity of the ventilation system VS, the microwave irradiation device 6 is disposed in the desiccant flow paths 5A, 5A. The microwave irradiation device 6 is a device for accelerating regeneration (desorption) by evaporation of moisture by exciting and heating water molecules adsorbed by irradiating the dehumidifying material with microwaves. As will be described later, when the supply mode and the exhaust mode are switched according to the season of operation, the microwave irradiation device 6 is operated in a predetermined state to evaporate the moisture in the adsorbent. It is like that. The microwave irradiation device 6 includes a humidity detection device that detects the moisture absorption state of the dehumidifying material 1 and a microwave control mechanism that can control on / off or strength of microwaves to be irradiated according to the detected humidity. The microwave output can be optimized according to the degree of drying of the dehumidifying material 1.

Next, safety ensuring means at the time of microwave irradiation by the microwave irradiation device 6 will be described. The main components of the desiccant channel 5A containing the dehumidifying material 1 and the microwave irradiating device 6 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.
Furthermore, 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 4 that encloses the dehumidifying material 1, a microwave irradiation by the microwave irradiation device 6 can be performed. Problems such as discharge, microwave loss due to eddy current generation, and concentration of microwaves on the dielectric can be prevented, and moisture desorption from the dehumidifying material 1 by microwave irradiation can be performed efficiently. become.

[Operation status of ventilation system VS]
Next, the operating state of the ventilation system VS will be described in detail by dividing it into climatic conditions in summer (high temperature and humidity), rainy season (intermediate temperature but high humidity), and winter (low temperature and low humidity).

(Summer season)
FIG. 3 is a diagram showing a flow path configuration in summer air supply mode operation and FIG. 4 is a summer exhaust mode operation (regeneration operation) and the temperature and humidity state of air in each part.
In the summer, the outside air 2 is assumed to be hot and humid with a temperature of 33 ° C. and a relative humidity of 60% RH (hereinafter referred to as each unit only), and the outside air 2 passes through the ventilation system VS. The ventilation system VS is operated so that the air supplied to the rear room is 26 ° C. and 50% RH.

  During operation in the summer air supply mode, as shown in FIG. 3, first, the outside air 2 (33 ° C., 60% RH) is guided to the desiccant flow paths 5A, 5A,. The air flowing in contact with the dehumidifying materials 1, 1... Contained in the flow paths 5A, 5A... And passing through the desiccant flow path 5A has a temperature of about 37 ° C. and a relative humidity of about 20% RH. Sent to. The circulating air introduced into the heat storage device 7 comes into contact with the pebble-shaped heat storage body 8 and lowers in temperature as it flows down (gives the sensible heat to be retained to the heat storage body 8), and finally reaches the target temperature of about 26 ° C. After cooling to room temperature, it is supplied to the room.

  Here, in the air flowing through the desiccant channel 5A, moisture contained in the air is adsorbed by the dehumidifying material 1, and the temperature of the circulating air rises due to the moisture adsorption, thereby reducing the moisture absorption capacity of the dehumidifying material 1. There's a problem. Therefore, during the air supply mode operation in summer, the outside air 2 is circulated through the air flow path 5B, and heat is exchanged between the circulated air in the desiccant flow path 5A and the dehumidifying material 1 for cooling. As a result, the temperature rise of the circulating air in the desiccant channel 5A can be prevented, and the adsorption efficiency of the dehumidifying material 1 can be maintained. Thereafter, the outside air 2 that has passed through the air flow path 5B is exhausted to the outside.

  Due to the air supply mode operation as described above, the hot and humid outside air 2 is supplied to the room after the temperature and humidity have been lowered, so the load of dehumidification and cooling on the air conditioner installed in the room is greatly increased due to ventilation. The ventilation system can minimize the increase in energy consumption without sacrificing comfort.

  Next, the operation (regeneration operation) in the exhaust mode in summer will be described. The main purpose of the exhaust mode operation in summer is to dry (regenerate) the dehumidifying material 1 that has adsorbed a large amount of water in the air supply mode operation. In the exhaust mode operation, as shown in FIG. 4, the indoor air 3 (26 ° C., 50% RH) is first guided to the heat storage device 7 and flows down while in contact with the pebble heat storage body 8. The sensible heat is taken from 8 and the heat storage body 8 is cooled. At the same time, the circulating air is heated and exhausted to the outside.

  On the other hand, for the drying (regeneration) of the dehumidifying material 1, use the heated exhaust (about 55 ° C, 20% RH) used in the existing equipment 9 such as general air conditioners (air conditioners), water heaters, and power units. Can do. The high-temperature exhaust of the existing equipment 9 is supplied to the desiccant channel 5A of the moisture adsorption / desorption device 4 to dissipate a large amount of moisture adsorbed on the dehumidifying material 1 and efficiently dry (regenerate) the dehumidifying material 1. It is possible to make it.

  By repeating the operation in the air supply mode and the exhaust mode as described above, the dehumidifying material 1 is dried and the heat storage body 8 is cooled (regenerated), and the next air supply mode operation (moisture adsorption and cooling) is possible. Become.

  Conventionally, a problem has been pointed out that it takes a long time to dry (regenerate) the dehumidifying material 1 during the exhaust mode operation. This is because the desorption of moisture from the dehumidifying material 1 is due to the endothermic change of the dehumidifying material 1, so that it is difficult to efficiently heat the dehumidifying material 1. Therefore, for the purpose of shortening the time of the exhaust mode operation, the microwave irradiation device 6 is operated for a short time at an appropriate timing of the regeneration operation to irradiate the dehumidification material 1 with the microwave, thereby being adsorbed on the dehumidification material 1. Moisture is selectively excited and desorbed. The microwave irradiation device 6 includes a humidity detection device that detects the moisture absorption state of the dehumidifying material 1 and a microwave control mechanism that can control on / off or strength of microwaves to be irradiated according to the detected humidity. Is done. As a result, the dehumidifying material 1 can be dried (regenerated) in a short time and at an appropriate timing, and the time required for the regeneration operation for drying (regenerating) the dehumidifying material 1 is reduced to the operation time of the supply air for dehumidifying the circulating air. Can be reduced to half or less, preferably 1/4 or less, more preferably 1/6 or less.

(In case of rainy season)
FIG. 5 is a diagram showing a flow path configuration in an air supply mode operation during the rainy season, and FIG.
In the rainy season, the outside air 2 is assumed to be at a moderately humid temperature of 26 ° C and 70% RH. The air supplied to the room after passing through the ventilation system VS is 26 ° C and 50%. Operate ventilation system VS to be RH.

  In the air supply mode operation during the rainy season, as in the summer air supply mode operation, as shown in FIG. 5, first, the outside air 2 (26 ° C., 70% RH) is passed through the desiccant channel of the moisture adsorption / desorption device 4. Are guided to 5A, 5A, and flow while in contact with the dehumidifying materials 1, 1 ... built in the desiccant channels 5A, 5A,. At this time, moisture contained in the outside air 2 is adsorbed by the dehumidifying material 1. The temperature of the air passing through the desiccant flow path 5A rises due to this moisture adsorption, but is formed by alternately intersecting the desiccant flow paths 5A, 5A... 1 and the air passing through the desiccant flow path 5A are cooled (heat exchange). The air after passing through the desiccant channel 5A of the moisture adsorption / desorption device 4 has a temperature of about 33 ° C. and a relative humidity of about 33% RH, and is then sent to the heat storage device 7. On the other hand, the outside air 2 that has passed through the air flow path 5B and exchanged heat with the air flowing through the desiccant flow path 5A is then exhausted to the outside.

  The circulating air sent from the moisture adsorption / desorption device 4 to the heat storage device 7 comes into contact with the pebble heat storage body 8 in the heat storage device 7, and as it flows down, the temperature is lowered (the sensible heat to be retained is given to the heat storage body 8. ) And finally cooled to the target temperature of about 26 ° C. and then supplied to the room.

  Next, the operation (regeneration operation) in the exhaust mode during the rainy season will be described. In the exhaust mode operation during the rainy season, as shown in FIG. 6, the indoor air 3 (26 ° C., 50% RH) is first guided to the heat storage device 7 and flows down while contacting the pebble heat storage body 8. Accordingly, the heat storage body 8 is deprived of sensible heat, and the heat storage body 8 is cooled. At the same time, the circulating air is heated to the desiccant channel 5A of the moisture adsorption / desorption device 4, and the dehumidifying material 1 is dried (regenerated). Is called.

  In the summer exhaust mode operation, the dehumidifying material 1 is dried (regenerated) using the high-temperature exhaust used in the existing equipment 9 such as a general air conditioner (air conditioner), a water heater, and a power unit. During the rainy season, these devices are often not in operation, so the air heated by the heat storage device 7 is used as described above. Such high-temperature air dissipates a large amount of moisture adsorbed on the dehumidifying material 1, and the dehumidifying material 1 is efficiently dried (regenerated) and discharged to the outside. At this time, as shown in FIG. 6, it is desirable to irradiate the dehumidifying material 1 with the microwave by the microwave irradiating device 6 to promote moisture desorption of the dehumidifying material 1.

(In winter)
FIG. 7 is a diagram showing a flow path configuration and an air temperature / humidity state of each part in a winter air supply mode operation, and FIG. 8 is a winter exhaust mode operation (regeneration operation).
In the winter, the outside air 2 is assumed to be in a low-temperature and low-humidity state of 0 ° C. and 40% RH. The air supplied to the room after passing through the ventilation system VS is 22 ° C. and 40% RH. The ventilation system VS is operated.

  When operating in the air supply mode in winter, as shown in FIG. 7, first, the outside air 2 is guided to the desiccant channels 5A, 5A... Of the moisture adsorption / desorption device 4 and is built in the desiccant channels 5A, 5A. It flows while in contact with the dehumidifying material 1, 1. At this time, the dehumidifying material 1 is irradiated with microwaves by the microwave irradiation device 6 to accelerate drying (regeneration) and humidify and heat the circulating air. The humidified and heated circulating air has a temperature of about 30 ° C. and a relative humidity of about 25% RH, and is then sent to the heat storage device 7. The air that has flowed into the heat storage device 7 comes into contact with the pebble heat storage body 8 in the heat storage device 7 adjusted to the temperature state of the indoor air 3, and is adjusted to about 22 ° C, which is the temperature state of the room air as it flows down. After that, it is supplied to the room.

With this air supply operation, the low-temperature and low-humidity outside air 2 is supplied to the room after the temperature and humidity are adjusted, so that the load of humidification and heating applied to the air conditioner installed in the room due to ventilation is greatly increased. A ventilation system that can be reduced and minimizes increase in energy consumption without sacrificing comfort is possible.
During operation in the exhaust mode in winter, as shown in FIG. 8, the indoor air 3 (22 ° C., 40% RH) is first guided to the heat storage device 7 and flows down while being in contact with the pebble heat storage body 8. Accordingly, sensible heat is taken from the heat storage body 8 to cool the heat storage body 8, and at the same time, the circulating air is heated (30 ° C., 24% RH) and sent to the desiccant channel 5 </ b> A. In the desiccant channel 5A, the built-in dehumidifying material 1 adsorbs moisture in the circulating air, and the circulating air is dried. Accordingly, the temperature of the circulating air rises, so that the outside air 2 is circulated through the air channel 5B and heat exchange with the circulating air in the desiccant channel 5A is performed to cool the desiccant channel and The adsorption action is maintained.

[Other examples]
(1) In the above embodiment, one set of ventilation system VS is provided, and the air supply mode and the exhaust mode are alternately operated repeatedly. However, two or more sets of ventilation systems VS are provided, Different operations in the air supply mode and the exhaust mode may be alternately performed in each ventilation system VS. By configuring in this way, indoor ventilation of constantly supplying and exhausting air is performed, and higher-level ventilation becomes possible.

It is a composition outline figure of ventilation system VS concerning the present invention. FIG. 3 is a schematic diagram showing a flow path configuration of the moisture absorption / desorption device 4. It is the figure which showed the flow path structure at the time of the air supply mode driving | operation of a summer, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the exhaust mode operation of summer, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the air supply mode driving | operation at the time of a rainy season, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the exhaust mode operation at the time of the rainy season, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the air supply mode driving | operation of winter, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the exhaust mode operation of winter, and the state of the temperature and humidity of each part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Dehumidifying material, 2 ... Outside air, 3 ... Indoor air, 4 ... Moisture absorption / desorption apparatus, 5A ... Desiccant flow path, 5B ... Air flow path, 6 ... Microwave irradiation Device, 7 ... Thermal storage device, 8 ... Thermal storage body, 9 ... Existing equipment, VS ... Ventilation system

Claims (9)

  In a ventilation system having an air supply mode for supplying outside air to the room and an exhaust mode for discharging indoor air to the outside, a moisture absorbing / desorbing device unit that incorporates a dehumidifying material and dehumidifies the circulating air or humidifies the circulating air. And a heat storage device section that incorporates a heat storage body and cools the circulation air or heats the circulation air, and operates in an air supply mode that passes through the moisture adsorption / desorption device section and the heat storage apparatus section, and at least the heat storage device section. Ventilation system characterized by alternately performing exhaust mode operation via.   During the air supply mode operation, the outside air that has passed through the moisture absorption / desorption device section is supplied to the room after passing through the heat storage device section, and during the exhaust mode operation, the room air that has passed through the heat storage apparatus section is supplied to the moisture absorption / desorption apparatus. The ventilation system according to claim 1, wherein the ventilation system is configured to be discharged to the outside of the room directly after passing through the part or without going through the moisture absorption / desorption device part.   Under the condition that the outside air contains a relatively large amount of moisture compared to the room air, the outside air is dehumidified via the moisture adsorption / desorption device during the air supply mode operation and then cooled via the heat storage device. The ventilation system according to any one of claims 1 and 2, wherein a regenerative operation for drying (regenerating) the dehumidifying material is performed during the exhaust mode operation, with a flow path configuration that is supplied to the room afterwards.   In a condition in which the indoor air contains a relatively large amount of moisture compared to the outside air, a regeneration operation is performed to dry (regenerate) the dehumidifying material during the air supply mode operation, and the indoor air stores the heat storage during the exhaust mode operation. The ventilation system according to any one of claims 1 and 2, wherein the ventilation system is configured to flow through an apparatus unit and then be dehumidified through the moisture adsorption / desorption device unit and then discharged outside the room.   The ventilation system according to any one of claims 3 and 4, wherein a regeneration operation time for drying (regenerating) the dehumidifying material is set to be equal to or less than half of an operation time of supply air or exhaust gas for performing dehumidification of circulating air. .   Introducing means for guiding high-temperature air or hot exhaust discharged from existing equipment such as general air conditioners, water heaters, and power units to the moisture absorption / desorption device, and / or a microwave irradiation device for irradiating the dehumidifying material with microwaves The ventilation system according to claim 3, wherein the dehumidifying material is dried (regenerated) during the regeneration operation.   The microwave irradiation device includes a humidity detection device that detects a moisture absorption state of the dehumidifying material, and a microwave control mechanism that can control on / off or strength of microwave irradiation according to the detected humidity. The ventilation system according to claim 6.   The dehumidifying material in the moisture adsorption / desorption device is configured by dispersing and fixing fine powder having a moisture absorbing effect on the breathable sheet, or adsorbing a liquid in which a substance having a moisture absorbing effect is dissolved to the breathable sheet. The sheet-like dehumidifying agent is constituted by drying and crystallization after being formed or by weaving hygroscopic fibers. Ventilation system. An air channel capable of exchanging heat is installed in the outer wall of the box containing the dehumidifying material or inside the box through the dehumidifying material and a partition wall, and the outside air or general air conditioner, water heater, power unit is installed in the air channel. The ventilation system according to any one of claims 1 to 8, wherein high-temperature air or hot exhaust gas discharged from existing equipment is introduced.

Images