JP5608050B2 - Air conditioning system - Google Patents

Description

  The present invention comprises a first breathable hygroscopic body that is driven to rotate, and adsorbs moisture in a gas that flows through the first hygroscopic section, and releases the adsorbed moisture to a gas that flows through the first regeneration section. A desiccant rotor and a second breathable hygroscopic body that is rotationally driven, adsorbs moisture in the gas that flows through the second hygroscopic section, and releases the adsorbed moisture to the gas that flows through the second regeneration section. The present invention relates to an air conditioning system including a desiccant rotor and a cooler that cools the gas that has flowed through the second moisture absorption part of the second desiccant rotor by heat exchange with a cooling medium.

Conventionally, as shown in FIG. 13, for the purpose of dehumidifying and cooling the air-conditioning target space S particularly in summer, etc., the moisture of the gas flowing through the first hygroscopic portion 12a is adsorbed and the adsorbed moisture is The first desiccant rotor 12 that discharges to the gas that flows through the regeneration unit 12b, and the first cooler 50 that cools the gas that flows through the first moisture absorption unit 12a of the first desiccant rotor 12 by heat exchange with the cooling medium. A second desiccant rotor 13 that adsorbs moisture in the gas that flows through the second moisture absorption unit 13a and releases the adsorbed moisture to the gas that flows through the second regeneration unit 13b, and the second desiccant rotor 13 A device including a second cooler 14 that cools the gas after flowing through the second hygroscopic portion 13a by heat exchange with a cooling medium is known (see Patent Document 1).
In the air conditioning system, the outdoor air OA is dehumidified by flowing the first moisture absorption part 12a of the first desiccant rotor 12, and the outdoor air OA whose temperature has been increased thereby is cooled by the first cooler 50. The outdoor air OA that has been dehumidified by passing through the second hygroscopic portion 13a of the second desiccant rotor 13 is cooled by the second cooler 14, and finally the outdoor air OA is cooled to the first desiccant rotor. The air conditioning air SA that has been appropriately cooled and dehumidified is guided to the air conditioning target space S by passing through the 12 first regeneration units 12b and cooling. In this configuration, the amount of moisture absorbed by the desiccant of the first desiccant rotor 12 by the first moisture absorber 12a and the amount of moisture released by the first regeneration unit 12b, that is, the amount of moisture absorbed and released by the desiccant, is so-called. The cooling capacity is greatly affected.

JP 2008-57953 A

  Considering the prior art from this point, for example, in the case of dehumidification / cooling operation in summer, the amount of moisture absorbed by the desiccant of the first desiccant rotor 12 is reduced and the first regeneration is performed at the same time when the humidity of the outside air is relatively low. The amount of moisture released by the part 12b decreased, and there was room for improvement in terms of cooling capacity. In the prior art, three heat exchangers of the first cooler 50, the second cooler 14, and the heater 15 are required. Further, as a configuration for cooling the outdoor air OA, the first cooler 50 cools the outdoor air OA that has been heated by the first moisture absorbing portion 12a of the first desiccant rotor 12, and the second cooler 14 It is necessary to cool the outdoor air OA after the temperature is raised in the second moisture absorption part 13a of the second desiccant rotor 13. Here, the second cooler 14 is led to the relatively hot outdoor air OA heated by the first moisture absorbing portion 12a of the first desiccant rotor 12 and the second moisture absorbing portion 13a of the second desiccant rotor 13, Since the relatively cool outdoor air OA heated only by the first moisture absorption part 12a of the first desiccant rotor is guided to the first cooler 50, the exchange heat quantity of the first cooler 50 is the second cooler 14 Low compared to the amount of exchange heat. However, since the outdoor air OA having the same flow rate is guided to the first cooler 50 and the second cooler 14, both must have the same cross-sectional area, that is, the same size. I had to. For this reason, in particular, the first cooler 50 is relatively large in spite of a small amount of exchange heat, and there is a problem in terms of downsizing the air conditioning system.

  The present invention has been made in view of the above-described problems, and the object thereof is as a whole in an air conditioning system including the first desiccant rotor 12 and the second desiccant rotor 13 while sufficiently exhibiting its air conditioning capability. The point is to provide a compact air conditioning system.

The air conditioning system of the present invention for achieving the above object is composed of a first hygroscopic hygroscopic body that is driven to rotate, adsorbs moisture of a gas flowing through the first hygroscopic section, and absorbs the adsorbed moisture to the first regeneration section. The first desiccant rotor that discharges to the gas to be passed through the gas and the second air-permeable hygroscopic body that is rotationally driven, adsorbs the moisture of the gas that is passed through the second hygroscopic portion, and the adsorbed moisture to the second regeneration unit An air-conditioning system comprising: a second desiccant rotor that discharges to a gas that flows through the second desiccant rotor; and a cooler that cools the gas that has passed through the second moisture absorption part of the second desiccant rotor by heat exchange with a cooling medium. And the characteristic composition is
Configuring the cooler from a single heat exchanger;
A humidifier capable of humidifying a gas guided to the first hygroscopic portion of the first desiccant rotor; a first gas; the humidifier; the first hygroscopic portion of the first desiccant rotor; and the second desiccant rotor. Each of the second hygroscopic part, the cooler, and the first regeneration part of the first desiccant rotor passes through the second hygroscopic part without being cooled after passing through the first hygroscopic part. a first gas conditioning means for conditioning by passing the second gas is guided to the cooler as the cooling medium, after heating the gas by heating freely heating means, said second desiccant rotor No. The second gas air-conditioning means for air-conditioning by passing through the regeneration unit, the first gas air-conditioned by the first gas air-conditioning means, or the second gas air-conditioned by the second gas air-conditioning means One of the air conditioning air Is led to the air-conditioned space and,
One of indoor air inside the air-conditioning target space and outdoor air outside the air-conditioning target space is led to the first gas air-conditioning means as the first gas, and the other is used as the second gas as the second gas. One of the first four-way valve leading to the gas air-conditioning means, the first gas air-conditioned by the first gas air-conditioning means, and the second gas air-conditioned by the second gas air-conditioning means, A second four-way valve that guides the air-conditioning air to the air-conditioning target space and guides the other air to the outside of the air-conditioning target space is provided .

According to the above characteristic configuration, the first gas is humidified by the humidifier on the upstream side of the first moisture absorption part of the first desiccant rotor, and the amount of moisture absorbed by the desiccant in the first moisture absorption part of the first desiccant rotor is increased. it can. Furthermore, with respect to the temperature of the first gas, the first gas is cooled in such a manner that the latent heat of vaporization accompanying the evaporation of the moisture is taken away, so the first moisture absorption part of the first desiccant rotor and the second desiccant rotor second. A cooler for cooling the first gas can be omitted between the moisture absorption part and the compaction can be achieved.
Further, with this configuration, in particular, when the first gas is led to the air-conditioning target space as the air for air conditioning, the first gas is humidified and cooled by the humidifier, and the first moisture absorbing portion of the first desiccant rotor is obtained. , Dehumidified by the second moisture absorption part of the second desiccant rotor, cooled by the first regeneration part of the first desiccant rotor, and led to the air-conditioning target space. Thereby, since the 1st moisture absorption part of the 1st desiccant rotor will dehumidify the 1st gas fully humidified with the humidifier, the 1st moisture absorption part of the 1st desiccant rotor will be in a sufficient moisture absorption state, The first regeneration unit can cool the first gas accompanying the release of a sufficient amount of water, and can appropriately exhibit its dehumidifying function regardless of the humidity of the outdoor air. As a result, the function of the 1st desiccant rotor can be functioned appropriately, and the air conditioning capability can fully be exhibited. Further, by adopting the above characteristic configuration, when the first gas air-conditioning unit guides the first gas as the air-conditioning air to the air-conditioning target space, the first gas air-conditioning unit uses a cooler as a heat exchanger having a relatively large pressure loss. Since it is sufficient to pass only one, pressure loss can be reduced and operating efficiency can be improved. As described above, in the air conditioning system including the first desiccant rotor and the second desiccant rotor, a compact air conditioning system as a whole can be realized while sufficiently exhibiting the air conditioning capability.
As described above, the first gas air-conditioning means cools the first gas with the humidifier, dehumidifies it with the first moisture absorption part of the first desiccant rotor, and dehumidifies with the second moisture absorption part of the second desiccant rotor. The first gas can be dehumidified and cooled by cooling with a cooler and cooling with the first regeneration unit of the first desiccant rotor. On the other hand, the second gas air-conditioning means guides and heats the second gas as a cooling medium to the cooler, heats it with the heating means, and humidifies it with the second regeneration unit of the second desiccant rotor. It can humidify and heat gas.
Therefore, according to the above characteristic configuration, the first four-way valve can guide either one of the indoor air or the outdoor air to the first gas air-conditioning means and the other to the second gas air-conditioning means. Furthermore, the second four-way valve uses either the first gas dehumidified and cooled by the first gas air-conditioning means or the second gas humidified and heated by the second gas air-conditioning means as air-conditioning air. Since it can be led to the air-conditioning target space, either low humidity / high temperature or high humidity / high temperature air can be led to the air conditioning target space depending on the situation. That is, according to the above-described characteristic configuration, a relatively simple configuration in which the first four-way valve and the second four-way valve are provided allows not only the dehumidifying and cooling operation but also the humidifying and heating operation to be executed by the two-stage desiccant rotor. be able to.

  In a further characteristic configuration of the air conditioning system according to the present invention, when the air conditioning target space is humidified and heated, the first four-way valve guides the room air as the first gas to the first gas air conditioning unit, In an operation state in which air is led to the second gas air-conditioning means as the second gas, the second four-way valve guides the first gas to the outside of the air-conditioning target space as the exhaust gas, and the second gas is When the air-conditioning air is led to the air-conditioning target space and the air-conditioning target space is dehumidified and cooled, the first four-way valve guides the room air as the second gas to the second gas air-conditioning means, and the outdoor air The second four-way valve guides the second gas to the outside of the air-conditioning target space as the exhaust and the first gas to the air-conditioning. for It lies in the fact that leads to the air-conditioned space as a gas.

According to the above characteristic configuration, as described above, switching between the first four-way valve and the second four-way valve is performed in a state in which the humidification heating operation and the dehumidification cooling operation are executed selectively. This can be realized with a relatively simple configuration.
In addition, by employ | adopting the structure of this invention, especially in humidification heating operation, the air for air conditioning fully humidified can be guide | induced to the air-conditioning object space. This is because, in the humidifying and heating operation, the second desiccant rotor sufficiently adsorbs the moisture of the room air sufficiently humidified by the humidifier in the second moisture absorption part, so that the second regeneration part is sufficient. This is because the outdoor air led to the second regeneration unit is sufficiently humidified.

  A further characteristic configuration of the air conditioning system of the present invention is that the humidifier is configured to humidify the first gas by spraying water directly.

  According to the above characteristic configuration, the humidifier sprays water directly onto the first gas. Therefore, the first gas is appropriately removed in such a form that the latent heat of vaporization caused by the evaporation of water is removed from the first gas. Can be cooled. Moreover, since it is not necessary for a humidifier to employ | adopt a structure like an orthogonal heat exchanger, a pressure loss can be reduced compared with the case where 1st gas is cooled with an orthogonal heat exchanger.

  A further characteristic configuration of the air conditioning system according to the present invention includes at least the first desiccant rotor, the second desiccant rotor, the cooler, the heating unit, the first gas air conditioning unit, the second gas air conditioning unit, and the first. A casing including the first four-way valve and the second four-way valve therein, and the first four-way valve and the second four-way valve are arranged in a coaxial arrangement in the casing, and the first four-way valve A separation wall for separating a part of the internal space of the casing at a position between the first four-way valve and the second four-way valve in a direction perpendicular to the rotation axis of the valve and the second four-way valve; There is in point.

  According to the above characteristic configuration, the first four-way valve and the second four-way valve are arranged coaxially with each other so that the gas flow guided toward the first four-way valve and the second four-way valve is performed. The direction and the flow direction of the gas sent out from the first four-way valve and the second four-way valve to the outside can be aligned with the direction orthogonal to the rotation axes of the first four-way valve and the second four-way valve. In addition to this, by providing a separation wall perpendicular to the rotation axis of the first four-way valve and the second four-way valve at a portion between the first four-way valve and the second four-way valve, At least the gas guided to the first four-way valve and the gas sent out from the first four-way valve, and the gas guided to the second four-way valve and the gas sent out from the second four-way valve in the flow direction, a simple configuration It can be made to flow in a separated state. As a result, the structure can be simplified without forming a complicated flow path.

It is a schematic block diagram which shows the flow-path structure when performing dehumidification air_conditionaing | cooling operation. It is a table | surface which shows the change of the state of gas when performing dehumidification air_conditionaing | cooling operation. FIG. 3 is an air diagram in which the gas states shown in FIG. 2 are plotted. It is a schematic block diagram which shows the flow-path structure when performing humidification heating operation. It is a table | surface which shows the change of the state of gas when performing humidification heating operation. It is an air line figure which plotted the state of the gas shown in FIG. It is a graph which shows the temperature of the dehumidification amount at the time of changing the temperature of the hot water supplied to a heater, and the air for air conditioning. It is a graph which shows the temperature of the dehumidification amount and the air-conditioning air at the time of changing the spraying amount of the water in a humidifier during the summer day. It is a graph which shows the temperature of the dehumidification amount and the air-conditioning air at the time of changing the spray amount of the water in a humidifier in the summer night. It is a perspective view which shows the specific structural example of a humidifier. It is a perspective view which shows the gas flow state when introducing outdoor air from the outside and sending it out as air-conditioning air to the air-conditioning target space when performing the dehumidifying and cooling operation. It is a perspective view which shows the gas flow state when introducing indoor air from the outside and sending it out to the outside of the air-conditioning target space when performing the dehumidifying and cooling operation. When performing humidification heating operation, it is a perspective view which shows the gas flow state when introducing outdoor air from the outside and sending it out to air-conditioning object space as air-conditioning air. When performing humidification heating operation, it is a perspective view which shows the gas flow state when sending out to the exterior of air-conditioning object space as the exhaust_gas | exhaustion which introduce | transduced room air from the outside. It is a figure which compares the relative magnitude | size at the time of seeing from the front in the state which installed both the cooler of this invention, the 2nd cooler of a prior art, and the 2nd cooler in the housing | casing. It is a schematic block diagram which shows the flow-path structure of a prior art. It is a table | surface which shows the change of the gas state in a prior art. It is an air line figure which plotted the state of the gas shown in FIG.

  The first feature of the air conditioning system according to the present invention is described later in detail in order to achieve a compact configuration while maintaining the air conditioning capability of the system, and the first moisture absorbing portion 12a of the first desiccant rotor 12 is described later. Without providing a cooler for cooling the gas after flowing through the first hygroscopic portion 12a between the second desiccant rotor 13 and the second hygroscopic portion 13a, the gas is supplied upstream of the first hygroscopic portion 12a. The humidifier 11 is provided with a humidifier. The second feature is that the first four-way valve 1 and the second four-way valve 17 are provided to perform dehumidifying and cooling operation in summer and the like and to perform humidification heating operation in winter and the like. . Hereinafter, the air conditioning system having the first and second features will be described with reference to the drawings.

This air conditioning system includes a first four-way valve 10 and a second four-way valve 17, and by switching between them, the flow path configuration in the case of executing the dehumidifying and cooling operation shown in FIG. 1, and the humidifying and heating operation shown in FIG. It is configured to be switchable to the flow path configuration when executing In particular, in the dehumidifying and cooling operation, in the flow path configuration of FIG. 1, the air-conditioning air SA that has been conditioned by guiding the outdoor air OA to the first flow path R1 (two-dot chain line in FIG. 1) is guided to the air-conditioning target space S. In the humidifying and heating operation, in the flow path configuration of FIG. 4, the air conditioning air SA that has been conditioned by guiding the outdoor air OA to the second flow path R <b> 2 (one-dot chain line in FIG. 4) is guided to the air conditioning target space S. It is configured.
Therefore, in the following, the basic components of the air conditioning system of the present invention and the configuration and operation of the first flow path R1 and the second flow path R2 will be described, and then the dehumidifying and cooling operation and the humidifying and heating operation will be described in order. To do.

[Description of each component of the air conditioning system]
The air conditioning system of the present invention includes, as a basic configuration, a humidifier 11, a first desiccant rotor 12, a second desiccant rotor 13, a cooler 14, and a heater 15 (an example of heating means), which will be described in detail later. It is. Specifically, the air conditioning system is composed of a first breathable hygroscopic body 12c that is driven to rotate, adsorbs moisture in the gas that flows through the first hygroscopic section 12a, and passes the adsorbed moisture to the first regeneration section 12b. The first desiccant rotor 12 that discharges to the gas to be flowed and the second air-permeable hygroscopic body 13c that rotates and adsorbs the moisture of the gas that is passed through the second hygroscopic portion 13a and the second regeneration of the adsorbed moisture. A second desiccant rotor 13 that discharges to the gas that flows through the part 13b, a cooler 14 that cools the gas that has passed through the second moisture absorption part 13a of the second desiccant rotor 13 by heat exchange with the cooling medium, And a heater 15 for heating the air guided to the second regeneration unit 13b of the two desiccant rotor 13 by heat exchange with the hot water W.

  Here, to describe the desiccant rotor, the breathable hygroscopic body of the first desiccant rotor 12 is configured to be rotationally driven by a driving motor (not shown). 1 and 4, a part of the first desiccant rotor 12 located on the upper side is shown as a first moisture absorption part 12a, and a part of the first desiccant rotor 12 located on the lower side is shown as a first regeneration part 12b. . When the breathable hygroscopic body of the first desiccant rotor 12 is rotationally driven by the driving motor, the portion corresponding to the first moisture absorbing portion 12a and the portion corresponding to the first reproducing portion 12b continuously change in the rotation direction. It is configured as follows. The first desiccant rotor 12 is rotationally driven at a constant speed of several tens of revolutions per hour, for example. The basic structure of the second desiccant rotor 13 is the same as that of the first desiccant rotor 12. The breathable hygroscopic body in the first desiccant rotor 12 and the second desiccant rotor 13 is composed mainly of a hygroscopic polymer. For example, sodium polyacrylate is used as the hygroscopic polymer. The first desiccant rotor 12 and the second desiccant rotor 13 are configured by holding a sodium polyacrylate powder on a honeycomb-shaped substrate having a diameter of 200 mm. Here, the thickness of the first desiccant rotor 12 is set to be thinner than the thickness of the second desiccant rotor 13. Specifically, the thickness of the first desiccant rotor 12 is 30 to 40 mm, and the thickness of the second desiccant rotor 13 is 60 to 80 mm. As described above, the reason why the thickness of the first desiccant rotor 12 is reduced is that the portion where the first desiccant rotor 12 is provided has a low moisture absorption / moisture release performance that can be exhibited. This is because it is not necessary. In this way, by reducing the thickness of the first desiccant rotor 12, the pressure loss can be reduced, and the operation efficiency of the entire apparatus can be improved.

  The first flow path R1 (the flow path indicated by the two-dot chain line in FIGS. 1 and 4) is the humidifier 11, the first moisture absorbing portion 12a of the first desiccant rotor 12, and the second moisture absorbing portion of the second desiccant rotor 13. 13a, the cooler 14, and the first regeneration unit 12b of the first desiccant rotor 12 are connected in order, and the first gas is allowed to flow through each in turn. Further, in the first flow path R1, the first gas is introduced into the first flow path R1 between the first moisture absorption section 12a of the first desiccant rotor 12 and the second moisture absorption section 13a of the second desiccant rotor 13. In order to allow the air to flow as described above, a first fan 18 that is sucked from the first hygroscopic portion 12a side and sent to the second hygroscopic portion 13a side is provided. Here, the first flow path R1 does not include the first cooler as found in the prior art.

  As a result, the first gas flowing through the first flow path R1 is cooled in a form in which it is humidified by the humidifier 11 and the latent heat of vaporization accompanying evaporation of the moisture is taken away, and the first desiccant rotor 12 first It is dehumidified by the hygroscopic part 12 a and dehumidified by the second hygroscopic part 13 a of the second desiccant rotor 13. And the 1st moisture absorption part 12a of the 1st desiccant rotor 12 absorbs moisture more with respect to the structure which is not equipped with the humidifier 11. FIG. Here, since the temperature of the first gas is increased by the heat of adsorption generated in the first moisture absorption part 12a and the second moisture absorption part 13a, the first gas is cooled by the cooler 14 so as to exchange heat with the cooling medium. The Thereafter, the first gas is guided to the first regeneration unit 12b of the first desiccant rotor 12, and the first regeneration unit 12b sufficiently releases the first gas along with the release of moisture absorbed by the first moisture absorption unit 12a. Therefore, the first gas is sufficiently dehumidified and cooled. In the structure of the present invention, humidification is performed by the humidifier 11, so extra moisture is released by this humidified portion, and the first desiccant rotor 12 works effectively. As described above, the first fan 18 and the first flow path R1 function as the first gas air-conditioning means in the form of dehumidifying and cooling the first gas through the first flow path R1. Although the details will be described later, in the dehumidifying and cooling operation, the first four-way valve 10 and the second four-way valve 17 are switched to the state shown in FIG. After being guided to the flow path R1, dehumidified and cooled as described above, the second four-way valve 17 realizes the air-conditioning air SA to the air-conditioning target space S.

  On the other hand, the second flow path R2 (the flow path indicated by the alternate long and short dash line in FIGS. 1 and 4) is sequentially connected to the cooler 14, the heater 15, and the second regeneration unit 13b of the second desiccant rotor 13, respectively. The second gas is passed in order. Further, in the second flow path R2, the second gas is supplied to the second flow path R2 downstream of the second regeneration portion 13b of the second desiccant rotor 13 so that the second gas flows into the second flow path R2 as described above. A second fan 16 is provided that sucks the second gas from the regeneration unit 13b side and sends it out to the downstream side.

  Thereby, the second gas flowing through the second flow path R2 is led to the cooler 14 as a cooling refrigerant and heated in a form of heat exchange with the high-temperature first gas, heated by the heater 15, The second regeneration unit 13b of the two desiccant rotor 13 is humidified, and is in a humidified / heated state. As described above, the second fan 16 and the second flow path R2 function as second gas air-conditioning means in a form in which the second gas is passed through the second flow path R2 to humidify and heat. Although details will be described later, in the humidifying and heating operation, by switching the first four-way valve 10 and the second four-way valve 17 to the state of FIG. 4, the outdoor air OA is changed from the first four-way valve 10 to the second gas as the second gas. After being guided to the flow path R2 and humidified and heated as described above, the second four-way valve 17 is used to guide the air-conditioning air SA to the air-conditioning target space S.

[Dehumidifying and cooling operation]
In order to execute the dehumidifying and cooling operation, first, the first four-way valve 10 and the second four-way valve 17 are controlled to be switched to the state shown in FIG. Specifically, in the control device, the first four-way valve 10 guides the outdoor air OA to the second flow path R2 (the flow path indicated by a one-dot chain line in FIG. 1) using the room air RA as the second gas. 1 gas is led to the first flow path R1 (flow path indicated by a two-dot chain line in FIG. 1), and the second four-way valve 17 guides the second gas to the outside of the air-conditioning target space S as the exhaust VA, and the first Switching control is performed so that the gas is led to the air conditioning target space S as air conditioning air SA. At this time, in particular, the process in which the outdoor air OA is air-conditioned to the air-conditioning air SA will be described. In the state where the first four-way valve 10 and the second four-way valve 17 are switched to the state shown in FIG. By operating 18, the outdoor air OA is guided to the first flow path R <b> 1 via the first four-way valve 10, cooled by the humidifier 11, dehumidified by the first moisture absorber 12 a, and the second moisture absorber The air is appropriately dehumidified and cooled in the form dehumidified at 13a, and is led to the air-conditioning target space S through the second four-way valve 17 as air-conditioning air SA.

[Air conditioning performance in dehumidifying and cooling operation]
As described so far, the air conditioning system of the present invention includes the humidifier 11 in the first flow path R1 through which the first gas flows, upstream of the first moisture absorption part 12a of the first desiccant rotor 12, The first gas is humidified by the humidifier 11, and the first gas cools the first gas in a form in which the latent heat of vaporization accompanying the evaporation of the moisture is taken away. It is something that demonstrates.
Therefore, in the following, the dehumidification / cooling performance in the dehumidifying and cooling operation of the present invention is evaluated by comparing the dehumidifying / cooling performance of the prior art with reference to FIGS. P1-P6 shown in FIGS. 2 and 3 correspond to the points shown on the first flow path R1 and the second flow path R2 in FIG. 1, and in the table of FIG. 2, P1-P6, outdoor air OA, The values of the temperature, relative humidity, and absolute humidity of the indoor air RA, air conditioning air SA, and exhaust VA are shown. FIG. 3 shows the gas states (temperature ° C, absolute humidity g / kg, relative humidity%) at each point. FIG. On the other hand, P1-P8 shown in FIGS. 17 and 18 are the flow path of the air conditioning air SA in FIG. 16 (the flow path indicated by the two-dot chain line in FIG. 16) and the flow path of the indoor air RA (FIG. 16). 17 corresponds to the points shown in FIG. 17, and the table of FIG. 17 shows the temperatures, relative humidity, and absolute values of P1-P7, outdoor air OA, indoor air RA, air conditioning air SA, and exhaust VA. The value of humidity is shown, and FIG. 18 is an air diagram showing the gas state (temperature ° C., absolute humidity g / kg, relative humidity%) indicated by each point. In the example of FIG. 1, the temperature of the outdoor air OA is 35 ° C. and the relative humidity is 45%. Moreover, when not performing cooling and dehumidification by another air conditioner, the temperature of the indoor air RA is 27.0 ° C. and the relative humidity is 65.0%. The flow rate of the outdoor air OA guided to the first flow path R1 is 100 m ³ / h, and the hot water W guided to the heater 15 is supplied at a flow rate of 1 L / min at a temperature of 75 ° C. The amount of water spray in the humidifier 11 was 5.3 g / min.

First, the dehumidifying performance of the present invention and the prior art will be compared. In the prior art, when the outdoor air OA is dehumidified in the process of flowing through the measurement points P1-P4 and becomes air conditioning air SA, the absolute humidity is reduced by 5.0 g / kg dry air. On the other hand, when the dehumidifying and cooling operation is performed in the present invention, when the outdoor air OA is dehumidified in the process of passing the measurement points P1 to P4 and becomes air conditioning air SA, the absolute humidity is 1.9 g / kg. Only dry air is falling. Thereby, it can be said that although the dehumidification performance is lower than that of the prior art, the dehumidifying function is appropriately exhibited. 2 and 3, the air-conditioning air SA has a temperature of 23.9 ° C. and a relative humidity of 75.3%, and the discomfort index in this case is 72.7. This is a value lower than the discomfort index 75 that 10% of people feel uncomfortable, and it can be said that good dehumidifying performance can be exhibited.
FIG. 7 shows the amount of dehumidification and air conditioning when the outdoor air OA is at a temperature of 35 ° C. and the relative humidity is 50% and the temperature 75 ° C. of the hot water W supplied to the heater 15 is changed from 45 ° C. to 90 ° C. The relationship with air SA temperature is shown. If the temperature of the hot water W rises, the amount of dehumidification increases, and the air-conditioning air SA temperature decreases, indicating that the dehumidifying and cooling performance increases.

Next, the cooling performance of the present invention and the prior art will be compared. In the prior art, when the outdoor air OA is cooled in the process of passing through the measurement points P1-P4 and becomes air conditioning air SA, the temperature is decreased by 6.5 ° C. to 28.5 ° C. Yes.
On the other hand, when the dehumidifying and cooling operation is performed in the present invention, when the outdoor air OA is cooled in the process of passing the measurement P1-P4 and becomes air conditioning air SA, the temperature is decreased by 11.1 ° C. It is 23.9 ° C. Thereby, it can be said that the cooling performance is dramatically increased as compared with the prior art. In particular, in the present invention, a temperature drop of 10 ° C. or more can be realized, and a sufficient cooling effect can be expected even in midsummer. As shown in the graph of FIG. 3, the cooling effect is such that the outdoor air OA is humidified by the humidifier 11 until the measurement point P1, and the latent heat of evaporation accompanying the evaporation of the moisture is deprived. This is because the effect of being cooled in the form is great.

[Air conditioning performance of humidification heating operation]
In order to execute the humidifying / heating operation, the first four-way valve 10 and the second four-way valve 17 are controlled to be switched to the state shown in FIG. . Specifically, in the control device, the first four-way valve 10 guides the outdoor air OA to the first flow path R1 (the flow path indicated by a two-dot chain line in FIG. 4) using the room air RA as the first gas. The second gas is guided to the second flow path R2 (the flow path indicated by the one-dot chain line in FIG. 4), and the second four-way valve 17 guides the first gas to the outside of the air-conditioning target space S as the exhaust gas, and the second gas. Is controlled to be guided to the air conditioning target space S as air conditioning air SA. At this time, in particular, the process in which the outdoor air OA is air-conditioned to the air-conditioning air SA will be described. With the first four-way valve 10 and the second four-way valve 17 switched in this way, the second fan 16 is turned on. By operating, the outdoor air OA is led to the second flow path R2 via the first four-way valve 10, and is led to the cooler 14 as a cooling refrigerant and heated in a form of heat exchange with the hot indoor air RA, A space to be air-conditioned as air-conditioning air SA through the second four-way valve 17 by being appropriately heated and heated by the heater 15 and humidified by the second regeneration unit 13b of the second desiccant rotor 13. Led to S.

[Air conditioning performance in humidification heating operation]
As described above, the air conditioning system of the present invention realizes the humidifying and heating operation that could not be realized by the prior art by appropriately operating the first four-way valve 10 and the second four-way valve 17. Below, the humidification and heating performance of the humidification heating operation of this invention are evaluated based on FIG. P1-P4 shown in FIGS. 5 and 6 are points shown on the first flow path R1 and the second flow path R2 in FIG. 4, and in the table of FIG. 5, the temperature of the outdoor air OA at P1-P4 is shown. The values of relative humidity and absolute humidity, and the values of temperature, relative humidity, and absolute humidity of outdoor air OA, room air RA, air conditioning air SA, and exhaust VA are shown. It is a figure showing a state (temperature ° C, absolute humidity g / kg, relative humidity%).

  The outdoor air OA is heated by being supplied as a cooling medium to the cooler 14 up to the measurement point P1, thereby increasing by 24.1 ° C., and from the measurement points P1 to P2, the heater 15 In the form of heat exchange with the hot water W of 65 ° C., the temperature increases by 27.3 ° C. until the second regeneration unit 13b of the second desiccant rotor 13 reaches the air conditioning target space S as the air conditioning air SA from the measurement point P2. And humidified with an absolute humidity of 7.29 g / kg dry air. As a result, the air-conditioning air SA has a temperature of 38.8 ° C., an absolute humidity of 11.2 g / kg dry humidity, and a relative humidity of 26.3%, and it can be said that the humidification / heating performance is exhibited well. (Please fill in the numerical values in the blanks above. Also fill in the blanks in the tables shown in Figs. 2 and 5.)

[Specific configuration of humidifier]
The structure of the humidifier 11 is demonstrated based on FIG. The humidifier 11 has a first gas inlet (on the back side in FIG. 10) on one of the front and rear surfaces, and a housing 20 having a first gas outlet 19 on the other side, An injection nozzle 21 that extends along the direction and sprays water over the entire upper surface of the housing 20, a water absorption pipe 22 that guides water to the injection nozzle 21, and supply of water to the injection nozzle 21 An electromagnetic valve 23 for switching the stop and a discharge pipe 24 for discharging water accumulated in the housing 20 to the outside are provided. A frame body 25 surrounding the injection nozzle 21 is provided at a side portion of the injection nozzle 21, and the frame body 25 diffuses water sprayed from the injection nozzle 21 to the outside of the housing 20. It is preventing.

By controlling the opening / closing time of the electromagnetic valve 23, the amount of water spray can be controlled. 8 and 9, the amount of dehumidification and the air conditioning air SA during the summer day (outdoor air OA 35 ° C., relative humidity 50%) and during the summer night (outdoor air OA 30 ° C., relative humidity 60%) when the spray amount is changed as shown in FIGS. Indicates temperature. The saturation efficiency in the figure is expressed as 100% when humidified to a relative humidity of 100% and 0% when not humidified at all. In this way, it is possible to change the temperature of the air-conditioning air SA by controlling the humidification amount.
The air outlet 19 is provided with a plate-shaped humidifying disk 26 for appropriately humidifying the first gas with water jetted from the jet nozzle 21. When the spray nozzle 21 sprays water into the inside of the housing 20, the humidifier 11 causes the first gas to flow when the first gas flows from the suction port toward the blower outlet 19. Is cooled in a form in which the latent heat of vaporization caused by the evaporation of water is taken away. As described above, the humidifier 11 has a relatively simple configuration, and can be configured in a compact manner even if it is relatively similar to the orthogonal heat exchanger having the same cooling performance.

[Packaging of air conditioning system]
In the air conditioning system of the present invention, each component device, the first flow path R1 and the second flow path R2 are packaged inside the casing 30 to achieve compactness. Therefore, in the following, first, the arrangement of each component device inside the casing 30 and the formation of the first flow path R1 and the second flow path R2 will be described based on FIGS. 11 (a), 11 (b), and FIG. Thereafter, the flow of the outdoor air OA during the dehumidifying and cooling operation being air-conditioned to become the air-conditioning air SA will be described based on FIG. 11, and the flow of the indoor air RA during the dehumidifying and cooling operation being the exhaust VA will be described based on FIG. Explained and based on FIG. 13, the flow of the outdoor air OA during the humidifying and heating operation being air-conditioned to become air conditioning air SA will be described, and the flow of the indoor air RA during the humidifying and heating operation becoming exhaust VA based on FIG. Will be described.

  FIG. 11 shows a perspective view when the above-described components are arranged inside the casing 30. Here, in the air conditioning system, the outdoor air OA and the indoor air RA are supplied to one of the insides of the casing 30 in order to appropriately guide the outdoor air OA and the indoor air RA to the components described above. So as to flow through a flow path formed on the side (the tip end side of the arrow Y in FIGS. 11A and 11B) and the other side (the base end side of the arrow Y in FIGS. 11A and 11B). It is configured. In order to appropriately show the configuration, FIG. 11A shows a state in which one side of the inside of the casing 30 is directed to the front side of the drawing (the front end side of the arrow Y in FIG. 11A). (B) has shown the state which orient | assigned the other side inside the casing 30 to the paper surface back side (base end side of the arrow Y in FIG.11 (b)). In addition, although mentioned later for details, the flow path formed in the one side inside the casing 30 is guide | induced to the other side in the middle, The flow path formed in the other side inside the casing 30 is one side in the middle It is formed to be guided to.

  As shown in FIG. 11, the air conditioning system of the present invention includes a humidifier 11, a first desiccant rotor 12, a first fan 18, a second desiccant rotor 13, a cooler 14, a heater 15, The two fans 16, the first four-way valve 10, and the second four-way valve 17 are appropriately arranged so as to be compact as a whole. Specifically, the first four-way valve 10 and the second four-way valve 17 are arranged in a direction from one side to the other side of the side surface of the casing 30 (FIG. ) Are arranged so as to overlap each other in the direction of arrow Y). Then, between the first four-way valve 10 and the second four-way valve 17, above the casing 30 in a state orthogonal to the rotation axis L of the first four-way valve 10 and the second four-way valve 17 (FIG. 11A). In FIG. 11 (b), substantially half of the region in the direction of arrow Z) is formed on one side (the arrow Y tip side in FIG. 11 (a)) and the other side (arrow Y base side in FIG. 11 (b)). A first separation wall 31 that is divided into two parts is provided. The first separation wall 31, the casing 30, and the like provide a flow path through which the indoor air RA and the outdoor air OA flow separately on one side and the other side inside the casing 30. By forming the flow passages in this way, the configuration in which the piping for air flow is not provided as much as possible inside the casing 30 is simplified.

Below, the arrangement | positioning relationship etc. of each component apparatus in the casing 30 are demonstrated by the form which demonstrates the air flow path of the concrete outdoor air OA and indoor air RA in order. In the drawings, the air flow is indicated by a dotted line when flowing through the inside of each component device, and is indicated by a solid line in other cases.
[Flow path and flow of outdoor air OA during dehumidifying and cooling operation]
As shown in FIGS. 11 (a) and 11 (b), the first air inlet 33 is provided on the upper surface 32 of the casing 30 on one side inside the casing 30 (the tip end side of the arrow Y in FIG. 11 (a)). The first four-way valve 10 disposed in the region is provided in a state in which air can flow. On the downstream side, a first flow path forming space V1 surrounded by the first separation wall 31 and the casing 30 is formed as a flow path for the outdoor air OA delivered from the first four-way valve 10. . On the downstream side, a second flow path forming space V2 surrounded by the first housing 34 is formed. In the second flow path forming space V2, the first moisture absorption of the humidifier 11 and the first desiccant rotor 12 is formed. The part 12a and the first fan 18 are provided internally. The outdoor air OA is humidified and cooled by the humidifier 11 in the second flow path forming space V2, dehumidified by the first hygroscopic portion 12a, and heated, and downstream by the first fan 18. Pumped. A first housing 35 is provided close to the lower side of the first housing 34 (the base end side of the arrow Z in FIG. 11A), and a second desiccant is disposed inside the first housing 35. A sixth flow path forming space V6 is formed in a state in which the second moisture absorption portion 13a of the rotor 13 and the cooler 14 are provided. The outdoor air OA is dehumidified by the second hygroscopic portion 13a in the sixth flow path forming space V6 and is heated, and cooled by the cooler 14 by heat exchange with the cooling medium. Thereafter, the outdoor air OA is guided to the third flow path forming space V3 formed in a form surrounded by the casing 30 or the like. The third flow path forming space V3 is located on the other side (FIGS. 11A and 11B) from the region on one side inside the casing 30 (the region on the tip side of the arrow Y in FIGS. 11A and 11B). ) In the region of the base end side of the arrow Y), and the first reproduction unit 12b of the first desiccant rotor 12 is disposed therein. The outdoor air OA is cooled by flowing through the first regeneration unit 12b in the third flow path forming space V3. On the downstream side, as shown in FIG. 11 (b), a second four-way valve 17 is provided, and a first air outlet 36 provided in a state of penetrating the upper surface 32 of the casing 30 is provided. . The outdoor air OA is guided to the outside as air conditioning air SA in a form that is sent out from the first air outlet 36 through the second four-way valve 17.

[Flow path and flow of indoor air RA during dehumidifying and cooling operation]
As shown in FIG. 12, the second air inlet 38 communicates with the first four-way valve 10 on the side surface 37 on one side of the casing 30 (the side surface on the tip side of the arrow Y in FIG. 12A). Is provided. On the downstream side, a fourth flow path forming space V4 formed by the first separation wall 31, the casing 30, the outer surface of the first housing 34, and the like is formed. In the fourth flow path forming space V4, The cooling medium inlet 14a for the cooling medium of the cooler 14 is provided. The room air RA flows into the casing 30 from the second air inlet 38 and is cooled from the cooling medium inlet 14a of the cooler 14 via the second four-way valve 17 and the fourth flow path forming space V4. Guided to vessel 14. As described above, the cooler 14 is provided inside the first housing 35, but the cooling medium outlet 14 b is a space between the first housing 35 and the casing 30. It opens to the fifth flow path forming space V5. The fifth flow path forming space V5 is formed from one region inside the casing 30 (the region on the tip end side of the arrow Y in FIGS. 12A and 12B) to the other region (FIGS. 12A and 12B). ), The heater 15 and the second regeneration portion 13b of the second desiccant rotor 13 are disposed therein. The room air RA is heated by the heater 15 in the fifth flow path forming space V5, and the desiccant in the part is regenerated in a form of being humidified and cooled by the second regeneration unit 13b. On the downstream side, a second fan 16, a second four-way valve 17, and a cylindrical flow path forming part 39 are provided. The room air RA is pumped by the second fan 16, flows through the inside of the cylindrical flow path forming part 39 in a form via the second four-way valve 17, and is discharged outside as exhaust VA.

[Switching the flow path]
The flow path during the dehumidifying and cooling operation and the humidifying and heating operation is such that the first four-way valve 10 and the second four-way valve 17 are rotated by the same rotation angle (90 ° in the present embodiment) about the rotation axis L. Can be switched. Hereinafter, when the flow path is set to the state shown in FIGS. 13 and 11 by switching between the first four-way valve 10 and the second four-way valve 17, the air flow during the humidifying heating operation will be described.

[Flow of outdoor air OA during humidification heating operation]
As shown in FIGS. 13 (a) and 13 (b), the outdoor air OA during the humidifying and heating operation flows through a flow path substantially similar to the indoor air RA during the dehumidifying and cooling operation described above. Therefore, only the flow of the outdoor air OA will be described below. The outdoor air OA flows into the casing 30 from the first air inlet 33, is guided to the fourth flow path forming space V4 via the first four-way valve 10, and is supplied to the cooling medium inlet 14a of the cooler 14. From the cooling medium outlet 14b of the cooler 14 to the fifth flow path forming space V5 and heated by the heater 15 inside the fifth flow path forming space V5. The second regeneration unit 13b of the second desiccant rotor 13 is humidified and cooled, is pumped to the second fan 16, and is air-conditioned as air-conditioning air SA from the second air outlet 36 via the second four-way valve 17. It is guided to the space S (not shown).

[Flow of room air RA during humidification heating operation]
As shown in FIGS. 14 (a) and 14 (b), the indoor air RA during the humidifying and heating operation flows through a flow path substantially similar to the outdoor air OA during the dehumidifying and cooling operation described above. Therefore, only the flow of the outdoor air OA will be described below. The room air RA flows into the casing 30 from the first air outlet 36, is guided to the first flow path forming space V1 via the first four-way valve 10, and enters the second flow path forming space V2. Then, it is humidified and cooled by the humidifier 11, dehumidified by the first hygroscopic portion 12 a of the first desiccant rotor 12, raised in temperature, and pumped downstream by the first fan 18. Then, in the sixth flow path forming space V6, the temperature is dehumidified by the second moisture absorbing portion 13a of the second desiccant rotor 13, the temperature is increased, the cooling is performed by the cooler 14, and the inside of the third flow path forming space V3. Then, it is humidified and cooled by the first regeneration unit 12b of the first desiccant rotor 12, flows through the inside of the cylindrical flow path forming unit 39 through the second four-way valve 17, and is discharged to the outside as the exhaust VA.

[Comparison of coolers as orthogonal heat exchangers]
From the viewpoint of compactness, in the conventional air conditioning system, two coolers as orthogonal heat exchangers are provided, whereas in the air conditioning system of the present invention, one cooler 14 as an orthogonal heat exchanger is provided. Only one is provided. Then, the ratio of the orthogonal heat exchanger which occupies the inside of a casing is shown. FIG.15 (b) has shown the side view when the air conditioning system of a prior art is packaged. The dimensions of the side view are derived by the applicant based on the contents disclosed in the prior art. A solid line indicates a frame of the casing, and a dotted line indicates a portion where a cooler as an orthogonal heat exchanger is provided. In FIG. 15B, two coolers as orthogonal heat exchangers are arranged so as to overlap one side inside the casing 30 and the other side inside the casing 30, so that the direction orthogonal to the paper surface Since the volume cannot be earned, the proportion of the cooler is increased in the direction along the paper surface. On the other hand, FIG. 15A is a view of the present invention viewed from one side of the side (the tip side of the arrow Y in FIG. 11A) in the perspective view of FIG. 11A. A solid line indicates a frame of the casing 30 and a dotted line indicates a portion where the cooler 14 as an orthogonal heat exchanger is provided. As can be seen from the drawing, it can be said that the use of the single cooler 14 can reduce the proportion of the entire casing 30 and can achieve compactness. Also, the number of heat exchangers is reduced. Comparing the heat exchanger and the humidifier, the humidifier can generally have a more compact structure.

[Another embodiment]
(A)
In the above embodiment, the air conditioning system includes the humidifier 11, the first desiccant rotor 12, the first fan 18, the second desiccant rotor 13, the cooler 14, the heater 15, the second fan 16, and the first inside the casing 30. The one four-way valve 10 and the second four-way valve 17 are appropriately arranged so as to be compact as a whole. However, for example, it is not necessary that all of the constituent devices are provided inside the casing 30, and a part thereof may be provided outside the casing 30.

  The air-conditioning system of the present invention can be effectively used as an air-conditioning system capable of simplifying the configuration while properly functioning the first desiccant rotor and maintaining the overall air-conditioning capability.

OA: outdoor air RA: indoor air SA: air conditioning air VA: exhaust S: air conditioning target space R1: first flow path (an example of first gas air conditioning means)
R2: 2nd flow path (an example of 2nd gas air-conditioning means)
DESCRIPTION OF SYMBOLS 10: 1st four-way valve 11: Humidifier 12: 1st desiccant rotor 12a: 1st moisture absorption part 12b: 1st regeneration part 13: 2nd desiccant rotor 13a: 2nd moisture absorption part 13b: 2nd regeneration part 14: Cooler 15: Heater (an example of heating means)
16: 2nd fan (an example of 2nd gas air-conditioning means)
17: Second four-way valve 18: First fan (an example of first gas air-conditioning means)

Claims (4)

A first desiccant rotor that is composed of a first hygroscopic hygroscopic body that rotates and adsorbs moisture of a gas that flows through the first hygroscopic portion, and releases the absorbed moisture into a gas that flows through the first regeneration portion; A second desiccant rotor that is composed of a second breathable hygroscopic body that rotates and adsorbs moisture in the gas that is passed through the second moisture-absorbing unit, and that releases the adsorbed moisture into the gas that is passed through the second regeneration unit; An air conditioning system comprising a cooler that cools the gas that has passed through the second moisture absorption part of the second desiccant rotor by heat exchange with a cooling medium,
Configuring the cooler from a single heat exchanger;
A humidifier capable of humidifying a gas guided to the first hygroscopic portion of the first desiccant rotor; a first gas; the humidifier; the first hygroscopic portion of the first desiccant rotor; and the second desiccant rotor. Each of the second hygroscopic part, the cooler, and the first regeneration part of the first desiccant rotor passes through the second hygroscopic part without being cooled after passing through the first hygroscopic part. a first gas conditioning means for conditioning by passing the second gas is guided to the cooler as the cooling medium, after heating the gas by heating freely heating means, said second desiccant rotor No. The second gas air-conditioning means for air-conditioning by passing through the regeneration unit, the first gas air-conditioned by the first gas air-conditioning means, or the second gas air-conditioned by the second gas air-conditioning means One of the air conditioning air Is led to the air-conditioned space and,
One of indoor air inside the air-conditioning target space and outdoor air outside the air-conditioning target space is led to the first gas air-conditioning means as the first gas, and the other is used as the second gas as the second gas. One of the first four-way valve leading to the gas air-conditioning means, the first gas air-conditioned by the first gas air-conditioning means, and the second gas air-conditioned by the second gas air-conditioning means, An air conditioning system comprising: a second four-way valve that guides the air-conditioning air to the air-conditioning target space and guides the other as exhaust to the outside of the air-conditioning target space . When humidifying and heating the air-conditioning target space, the first four-way valve guides the indoor air as the first gas to the first gas air-conditioning means, and uses the outdoor air as the second gas as the second gas air-conditioner. In the operation state leading to the means, the second four-way valve guides the second gas as the air-conditioning air to the air-conditioning target space in the operation state leading the first gas as the exhaust to the outside of the air-conditioning target space. ,
When dehumidifying and cooling the air-conditioning target space, the first four-way valve guides the room air as the second gas to the second gas air-conditioning means, and uses the outdoor air as the first gas. The second four-way valve guides the second gas to the outside of the air-conditioning target space as the exhaust and guides the first gas to the air-conditioning target space as the air-conditioning air when guiding to the means. Item 2. The air conditioning system according to Item 1 . The air conditioning system according to claim 1 or 2 , wherein the humidifier is configured to humidify the first gas by spraying water directly . At least the first desiccant rotor, the second desiccant rotor, the cooler, the heating unit, the first gas air conditioning unit, the second gas air conditioning unit, the first four-way valve, and the second four-way valve The rotating shafts of the first four-way valve and the second four-way valve are arranged coaxially within the casing, and are orthogonal to the rotating shafts of the first four-way valve and the second four-way valve. in a direction, a portion between the first four-way valve and the second four-way valve, to any one of provided with a separation wall separating a part and claims 1 to 3 of the inner space of the casing The air conditioning system described.

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