JP5714946B2 - Air conditioning system - Google Patents

Description

  The present invention comprises a desiccant rotor that is composed of a breathable hygroscopic body that is driven to rotate, adsorbs the moisture of the gas that flows through the hygroscopic part, and releases the gas that causes the adsorbed moisture to flow through the regeneration part, and the desiccant rotor. The present invention relates to an air conditioning system including a cooler that cools the gas that has flowed through the moisture absorption part by heat exchange with a cooling medium, and a heating unit that can heat the gas.

Conventionally, as shown in FIG. 11, for the purpose of dehumidifying and cooling the air-conditioning target space S particularly in summer, the moisture of the gas flowing through the moisture absorption unit 12a is adsorbed and the adsorbed moisture is passed through the regeneration unit 12b. A first cooler 50 that includes a first desiccant rotor 12 that discharges to the gas to be flowed, and that cools the gas that has passed through the hygroscopic portion 12a of the first desiccant rotor 12 by heat exchange with the cooling medium; The second desiccant rotor 13 that adsorbs the moisture of the gas to be passed through the part 13a and releases the adsorbed moisture to the gas that is passed through the second regeneration part 13b, and the second moisture absorption part 13a of the second desiccant rotor 13 A device including a second cooler 14 that cools the gas after flowing through the heat exchange with the cooling medium is known (see Patent Document 1).
In the air conditioning system, the outdoor air OA is dehumidified by flowing through the 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 13 a of the desiccant rotor 13 is cooled by the second cooler 14, and finally the outdoor air OA is removed from the first desiccant rotor 12. The air conditioning air SA that has been appropriately dehumidified and cooled can be guided to the air conditioning target space S by passing through the regeneration unit 12b and cooling.

JP 2008-57953 A

In the technique disclosed in Patent Document 1 described above, the first desiccant rotor 12 and the second desiccant rotor 13 are provided as the desiccant rotor for dehumidifying the outside air, and as the cooler for cooling the outside air, The first cooler 50 that cools the air-conditioning air SA that has been heated by the moisture absorption part 12a of the first desiccant rotor 12 and the air-conditioning air SA that has been raised by the second moisture absorption part 13a of the second desiccant rotor 13 Since the two coolers of the second cooler 14 to be cooled were provided, there were many components of the air conditioning system, and there was a problem that it was difficult to make it compact.
Also, the outdoor air OA is led to the air-conditioning target space S as the air-conditioning air SA, the first moisture absorption part 12a of the first desiccant rotor 12, the first cooler 50 as the heat exchanger, and the second desiccant rotor 13 The second moisture absorption part 13a, the second cooler 14 as a heat exchanger, and the first regeneration part 12a of the first desiccant rotor 12 need to flow through, and there is a problem that the pressure loss is high.
Moreover, since it has only a dehumidifying and cooling function, there has been a problem that it cannot be used in winter where a humidifying and heating function is required.

  The present invention has been made in view of the above problems, and its object is to provide an air conditioning system capable of exhibiting both a dehumidifying cooling function and a humidifying heating function while suppressing pressure loss with a simple structure. It is in.

Air conditioning system of the present invention for achieving the above object, consists of breathable moisture absorber which rotates, thereby adsorbing moisture in the gas to flow through the moisture absorption portion, the gas to flow through to the playback unit the adsorbed water A desiccant rotor to release,
An air conditioning system comprising a cooler that cools the gas that has passed through the hygroscopic portion of the desiccant rotor by heat exchange with a cooling medium, heating means that can heat the gas, and a casing .
Equipped with a humidifier capable of humidifying gas,
A first air-conditioning flow path for air-conditioning by allowing the moisture absorption part of the desiccant rotor and the cooler to flow in the order described, and a gas as the cooling medium to the cooler, and heating by the heating means; A second air-conditioning flow path for air-conditioning through the regeneration section of the desiccant rotor;
A first operating state in which the first gas is air-conditioned in the first air-conditioning flow path and then humidified by the humidifier and guided to the air-conditioning target space as air-conditioning air and the regeneration air is guided to the regeneration unit of the desiccant rotor. And the second gas is air-conditioned in the second air-conditioning flow path and then humidified by the humidifier and led to the air-conditioning target space as air-conditioning air and the moisture-absorbing air is led to the moisture-absorbing part of the desiccant rotor. A switching means for selectively switching between two operating states is provided ,
The switching means guides the first gas to the first air-conditioning flow path and leads the regeneration air to the second air-conditioning flow path, and guides the second gas to the second air-conditioning flow path and absorbs moisture. A first four-way valve that switches the working air to the second operating state leading to the first air conditioning flow path;
The first gas conditioned in the first air conditioning channel is guided to the humidifier and then guided to the air-conditioning target space as air conditioning air, and the regeneration air flowing through the second air conditioning channel is exhausted as air. The first operating state leading to the outside of the target space, and the second gas conditioned in the second air conditioning flow path is guided to the humidifier after being guided to the humidifier and the first air conditioning. A second four-way valve that switches to the second operating state that guides the hygroscopic air flowing through the flow path to the air-conditioning target space as exhaust;
The casing includes at least the desiccant rotor, the cooler, the heating means, the first air conditioning channel, the second air conditioning channel, the first four-way valve, and the second four-way valve,
Further, inside the casing, the rotation shafts of the first four-way valve and the second four-way valve are arranged coaxially, and in a direction orthogonal to the rotation shafts of the first four-way valve and the second four-way valve, A portion between the first four-way valve and the second four-way valve is provided with a separation wall that separates a part of the internal space of the casing and forms a space through which the gas flows.
The space is that at least a space through which the first gas flows and a space through which the second gas flows are configured separately .

According to the above characteristic configuration, in the summertime when the dehumidifying and cooling operation is performed, the first gas is dehumidified by the moisture absorption part of the desiccant rotor and cooled by the cooler by switching to the first operating state by the switching unit. After that, the first gas is cooled in a form in which moisture is supplied by a humidifier and latent heat of vaporization of the moisture is taken away, and the first gas appropriately dehumidified and cooled can be supplied to the air-conditioning target space as air-conditioning air .
On the other hand, in the winter season when the humidification heating operation is performed, the second gas is guided to the cooler as a cooling medium by switching to the second operation state by the switching unit, and further heated by the heating unit, After humidifying in the regeneration part of the desiccant rotor, it is further humidified by a humidifier, and the second gas appropriately humidified and heated can be supplied to the air-conditioned space as air-conditioning air.
That is, according to the above characteristic configuration, it is possible to provide an air conditioning system that not only exhibits the dehumidifying and cooling function but also exhibits the humidifying and heating function by appropriately operating the switching means.
Further, according to the above configuration, since the humidifier is provided so as to humidify the air-conditioning air immediately before being guided to the air-conditioning target space, in the first operation state that is the dehumidifying and cooling operation, Cooling in a form that takes away the latent heat of vaporization of water added with humidification from air, and can exhibit sufficient dehumidifying cooling performance. As a result, even in a simple configuration in which one desiccant rotor and one cooler are provided, the dehumidifying and cooling performance can be appropriately exhibited.
From the above, it is possible to simplify the configuration and realize an air conditioning system that appropriately exhibits both the dehumidifying cooling performance and the humidifying heating performance while reducing the pressure loss.
Further, according to the above characteristic configuration, the switching means can be realized by a relatively simple configuration of the first four-way valve and the second four-way valve, and by operating the first four-way valve and the second four-way valve as described above. Depending on the situation, either low-humidity / low-temperature air-conditioning air or high-humidity / high-temperature air-conditioning air can be guided to the air-conditioning target space.
That is, according to the above characteristic configuration, it is possible to appropriately execute not only the dehumidifying and cooling operation but also the humidifying and heating operation by a relatively simple configuration in which the first four-way valve and the second four-way valve are provided as the switching means. it can.
Further, according to the above characteristic configuration, the first four-way valve and the second four-way valve are further arranged coaxially with each other so that the gas guided toward the first four-way valve and the second four-way valve. The flow direction of the gas and the flow direction of the gas sent out from the first four-way valve and the second four-way valve can be aligned in a direction orthogonal to the rotation axes of the first four-way valve and the second four-way valve. In addition to this, a separation wall orthogonal to the rotation axis of the first four-way valve and the second four-way valve is provided at a portion between the first four-way valve and the second four-way valve to form a space through which gas flows. Thus, at the separation wall, at least the gas led to the first four-way valve and the gas sent out from the first four-way valve, the gas led to the second four-way valve and the gas sent out from the second four-way valve, In the flow direction, the flow can be separated in a simple configuration. As a result, it is possible to simplify the structure without forming a complicated flow path by providing a configuration in which no air flow piping is provided in the casing as much as possible.

Further features of the air conditioning system of the present invention are as follows:
The humidifier is configured to be humidified by spraying water directly on the first gas or the second gas as air-conditioning air.

According to the above characteristic configuration, when supplying the first gas as air-conditioning air to the air-conditioning target space, the humidifier sprays water directly on the first gas. Is deprived from the first gas, and the first gas can be appropriately cooled.
On the other hand, when supplying the second gas as air-conditioning air to the air-conditioning target space, the humidifier can humidify by spraying water directly on the second gas. Furthermore, the humidification state of the second gas can be adjusted to a desired state by performing control for adjusting the spray amount.
Further, the humidifier can be configured to suppress pressure loss as compared to the orthogonal heat exchanger. Thereby, compared with the case where 1st gas is cooled with an orthogonal heat exchanger, the drive force of the fan which pumps 1st gas can be reduced, and energy saving can be achieved.

It is a schematic block diagram which shows the flow path when performing dehumidification air_conditionaing | cooling operation. It is an air line figure which plotted the state of gas when performing dehumidification cooling operation. It is a table | surface which shows the change of the state of gas shown in FIG. It is a schematic block diagram which shows the flow path when performing humidification heating operation. It is an air line figure which plotted the state of gas when performing humidification heating operation. It is a table | surface which shows the change of the state of gas shown in FIG. FIG. 5 is a perspective view showing a gas flow state when outdoor air (first gas) is introduced from the outside and sent as air-conditioning air to an air-conditioning target space when performing a dehumidifying and cooling operation. FIG. 6 is a perspective view showing a gas flow state when indoor air (regeneration air) is introduced from the outside and sent out to the outside of the air conditioning target space when performing dehumidifying and cooling operation. When performing humidification heating operation, it is a perspective view which shows the gas flow state when introducing outdoor air (1st gas) from the outside and sending it out to an 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 introducing indoor air (humidity absorption air) from the outside and sending it out as air-conditioning air to the air-conditioning target space. It is a schematic block diagram which shows the flow-path structure of a prior art. It is an air diagram which plotted the state of the gas in a prior art. It is a table | surface which shows the change of the state of gas in FIG.

  The air-conditioning system according to the present invention is characterized in that the first four-way valve 10 and the second four-way valve 17 are used as switching means to execute both the dehumidifying and cooling operation and the humidifying and heating operation while maintaining a simple structure as a desiccant air conditioner. And a humidifier 11 capable of humidifying the air-conditioning air SA immediately before being supplied to the air-conditioning target space S. The air conditioning system of the present invention having the above features will be described below with reference to the drawings.

In the dehumidifying and cooling operation, the air conditioning system performs air conditioning by guiding the outdoor air OA (first gas) to the first air conditioning channel R1 (two-dot chain line in FIG. 1) in the channel configuration of FIG. The humidifier 11 humidifies the air-conditioning air SA and guides the air-conditioning air SA to the air-conditioning target space S. In the humidifying and heating operation, the outdoor air OA (second gas) in the flow path configuration of FIG. ) Is led to the second air conditioning channel R2 (dashed line in FIG. 4) for air conditioning, and then humidified by the humidifier 11 to be used as air conditioning air SA, and the air conditioning air SA is guided to the air conditioning target space S. It is configured.
Therefore, in the following, the basic configuration of the air conditioning system of the present invention, the configurations and functions of the first air conditioning channel R1 and the second air conditioning channel R2 will be described in order, and then the dehumidifying and cooling operation and the humidifying and heating operation will be described. .

[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 desiccant rotor 12, a cooler 14, and a heater 15 (an example of a heating unit) that can be humidified by spraying water directly on air. is there. Specifically, the air conditioning system is composed of a breathable hygroscopic body 12c that is driven to rotate, adsorbs moisture in the gas that flows through the hygroscopic section 12a, and releases the absorbed moisture to gas that flows through the regeneration section 12b. The desiccant rotor 12, the cooler 14 that cools the gas that has passed through the moisture absorption part 12 a of the desiccant rotor 12 by heat exchange with the cooling medium, and the air that is led to the regeneration part 12 b of the desiccant rotor 12 is heated by the hot water W. And a heater 15 for heating by exchange.

  Here, to describe the desiccant rotor, the breathable hygroscopic body of the desiccant rotor 12 is configured to be rotationally driven by a driving motor (not shown). In FIGS. 1 and 4, a part of the desiccant rotor 12 located on the upper side (the tip side of the arrow Z in FIGS. 1 and 4) is a moisture absorbing portion 12a, and the lower side (the base end side of the arrow Z in FIGS. 1 and 4). A part of the desiccant rotor 12 positioned at is shown as a reproducing unit 12b. When the breathable hygroscopic body 12c of the desiccant rotor 12 is rotationally driven by a driving motor, the portion corresponding to the moisture absorbing portion 12a and the portion corresponding to the reproducing portion 12b are continuously changed in the rotation direction. Yes. The desiccant rotor 12 is driven to rotate at a constant speed of several tens of revolutions per hour, for example. The breathable hygroscopic body 12c in the desiccant rotor 12 is mainly composed of a hygroscopic polymer. For example, sodium polyacrylate is used as the hygroscopic polymer. The desiccant rotor 12 is configured by holding sodium polyacrylate powder on a honeycomb-shaped substrate having a diameter of 200 mm. Here, the thickness of the desiccant rotor 12 can suitably be about 30 to 60 mm.

  The first air conditioning channel R1 (the channel indicated by the two-dot chain line in FIGS. 1 and 4) is connected in order of the moisture absorption part 12a of the desiccant rotor 12 and the cooler 14, and gas is allowed to flow through each in turn. ing. Further, in the first air conditioning channel R1, the gas is allowed to flow through the first air conditioning channel R1 as described above on the downstream side of the first four-way valve 10 to be described later and upstream of the moisture absorbing portion 12a of the desiccant rotor 12. A first fan 18 is provided to send gas to the moisture absorption part 12a side of the desiccant rotor 12.

As a result, the gas flowing through the first air conditioning channel R1 is dehumidified by the hygroscopic portion 12a of the desiccant rotor 12, and cooled by the cooler 14 in the form of heat exchange with the cooling medium.
Although details will be described later, in the first operation state shown in FIG. 1, outdoor air OA (first gas) as a gas is conditioned in the first air conditioning flow path R1, and then led to the humidifier 11. Cooling is performed in such a manner that the latent heat of vaporization accompanying the evaporation of moisture added with humidification of the humidifier 11 is removed, and the air-conditioning air SA appropriately dehumidified and cooled is supplied to the air-conditioning target space S to be dehumidified and cooled. Driving is realized.

On the other hand, the second air-conditioning flow path R2 (flow path represented by a one-dot chain line in FIGS. 1 and 4) is sequentially connected to the cooler 14, the heater 15, and the regeneration unit 12b of the desiccant rotor 12, and sequentially gasses. I let it flow. Further, in the second air conditioning channel R2, in order to allow the gas to flow to the second air conditioning channel R2, as described above, on the upstream side of the second four-way valve 17 described later on the downstream side of the regeneration portion 12b of the desiccant rotor 12. A second fan 16 that sucks gas from the upstream side and pumps the gas downstream is provided.
Thereby, the gas flowing through the second air conditioning channel R2 is guided to the cooler 14 as a cooling refrigerant, and is heated in a form in which heat is exchanged with the high-temperature gas in the cooler 14. Heated in the form of heat exchange with the hot water W, humidified by the regeneration unit 12b of the desiccant rotor 12, and humidified and heated.
Although details will be described later, in the second operation state shown in FIG. 4, outdoor air OA (second gas) as a gas is air-conditioned in the second air conditioning channel R <b> 2 and then led to the humidifier 11. Humidification heating operation is realized by sufficiently humidifying and supplying the air-conditioning target space S as air-conditioning air SA appropriately humidified and heated.

  In the air conditioning system of the present invention, as described above, the humidifier 11 is provided so as to humidify the air-conditioning air SA immediately before being guided to the air-conditioning target space S, and exhibits an appropriate dehumidifying cooling performance. The second-stage second desiccant rotor 13 and the second cooler 14 provided in the prior art are omitted to simplify the configuration.

[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 first operation state shown in FIG. Specifically, the control device guides the outdoor air OA (first gas) to the first air-conditioning flow path R1 through the first four-way valve 10 and sends the outdoor air RA (regeneration air) to the second air-conditioning flow path R2. The second four-way valve 17 is controlled to be guided to the air conditioning target space S as the air conditioning air SA after the outdoor air OA (first gas) conditioned in the first air conditioning channel R1 is guided to the humidifier 11. Alternatively, control to switch to the state leading to
At this time, in particular, the process in which the outdoor air OA (first gas) is air-conditioned to the air-conditioning air SA will be described. The first four-way valve 10 and the second four-way valve 17 are in the first operation state (state in FIG. 1). In the state where the first fan 18 is operated, the outdoor air OA (first gas) is guided to the first air-conditioning flow path R1 via the first four-way valve 10, and the desiccant rotor 12 absorbs moisture. The air is dehumidified by the unit 12a, cooled by the cooler 14, guided to the humidifier 11 by the second four-way valve 17, and humidified by the humidifier 11, and guided to the air conditioning target space S as the air conditioning air SA. It is burned.

  In the dehumidifying and cooling operation, the room air RA flows through the cooler 14 as a cooling medium, then flows through the heater 15, and flows through the regeneration unit 12b of the desiccant rotor 12 as regeneration air. The second fan 16 is pumped toward the second four-way valve 17. The room air RA passes through the second four-way valve 17 and is led to the outside of the air conditioning target space S as the exhaust VA through the air discharge pipe 37.

[Air conditioning performance in dehumidifying and cooling operation]
As described above, in the air conditioning system of the present invention, after the outdoor air OA (first gas) is air-conditioned in the first air conditioning flow path R1, the outdoor air OA (first gas) is further processed by the humidifier 11. ) And the outdoor air OA (first gas) is cooled in such a manner that the latent heat of vaporization accompanying the evaporation of moisture due to the humidification is removed, so that the outdoor air OA (first air) is maintained while maintaining a relatively simple configuration. Gas) can be appropriately dehumidified and cooled.
Therefore, in the following, the dehumidifying and cooling performance in the dehumidifying and cooling operation of the present invention is evaluated by comparing the dehumidifying and cooling performance of the prior art with reference to FIGS. P1-P8 shown in FIGS. 2 and 3 correspond to the points shown on the circuit in FIG. 1, and FIG. 2 shows the air states (temperature, absolute humidity, relative humidity) shown at each point. FIG. 3 is a diagram showing the values of temperature, absolute humidity, and relative humidity in P1-P8. On the other hand, P1-P11 shown in FIGS. 12 and 13 correspond to the points shown on the circuit in FIG. 11 which is the prior art, and FIG. 12 shows the gas states (temperature, absolute humidity, relative FIG. 13 shows the values of temperature, relative humidity, and absolute humidity in P1-P11.
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 outdoor air OA is 27.0 ° C. and the relative humidity is 65.0%. The flow rate of the outdoor air OA guided to the first air conditioning channel 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 water spray amount 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 passing the measurement points P1-P2 and P3-P4 and becomes air-conditioning air SA, the absolute humidity decreases by 4.4 g / kg dry air. ing. 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 flowing through the measurement points P1-P2, and becomes air conditioning air SA, the absolute humidity is 2.5 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 19.5 ° C. and a relative humidity of 95%, and the discomfort index in this case is calculated to be 66.8. 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.

  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 the measurement points P2-P3 and P4-P5 and becomes air-conditioning air SA, the temperature decreases by 6.5 ° C. and 28.5. It is ℃. On the other hand, when the dehumidifying and cooling operation is performed in the present invention, the outdoor air OA is cooled in the process of passing the measurement points P2-P3 and P3-P4, and when the air-conditioning air SA is obtained, the temperature is 15 It has decreased by .5 ° C and is 19.5 ° 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 15 ° C. or more can be realized, and a sufficient cooling effect can be obtained even in midsummer. As shown in the air diagram of FIG. 2, the cooling effect is such that the outdoor air OA is humidified by the humidifier 11 between the measurement points P <b> 3 and P <b> 4, and the evaporation accompanying the evaporation of the moisture. This is because the effect of being cooled in a form deprived of latent heat is great.

  In the air conditioning system of the present invention, the first four-way valve 10 and the second four-way valve 17 are appropriately operated to realize switching between the dehumidifying and cooling operation and the humidifying and heating operation that cannot be realized by the conventional technology.

[Humidification heating operation]
In order to execute the humidifying and heating operation, the first four-way valve 10 and the second four-way valve 17 are controlled to be switched to the second operation state shown in FIG. To do.
Specifically, the control device guides the first four-way valve 10 from the outdoor air OA (second gas) to the second air conditioning flow path R2 and sends the indoor air RA (hygroscopic air) to the first air conditioning flow path R1. The second four-way valve 17 is controlled to be switched to the led state, and the outdoor air OA (second gas) conditioned by the second air conditioning flow path R2 is guided to the humidifier 11, and then the air conditioning air SA is input to the air conditioning target space S. Switch control to the state to guide alternatively.
At this time, in particular, the process in which the outdoor air OA (second gas) is air-conditioned to the air-conditioning air SA will be described. The first four-way valve 10 and the second four-way valve 17 are in the second operation state (the state shown in FIG. 4). ), The outdoor air OA (second gas) is guided to the second air-conditioning flow path R2 via the first four-way valve 10 to the cooler 14 by operating the second fan 16. The second four-way valve 17 is guided and heated as a cooling medium, heated in the form of heat exchange with the hot water W by the heater 15, and appropriately humidified in the form of being humidified by the regeneration unit 12 b of the desiccant rotor 12. Then, after being humidified by the humidifier 11, the air is guided to the air-conditioning target space S as air-conditioning air SA.

  In the humidifying and heating operation, the indoor air RA is guided to the first fan 18 via the first four-way valve 10 and is pumped to the downstream side by the first fan 18 to absorb moisture in the desiccant rotor 12 as moisture-absorbing air. 12a flows through the cooler 14 as a medium to be cooled, and is led to the outside of the air-conditioning target space S as the exhaust VA through the second four-way valve 17.

[Air conditioning performance in humidification heating operation]
Below, the humidification heating performance of the humidification heating operation of this invention is evaluated based on FIG. P1-P8 shown in FIGS. 5 and 6 are points shown on the circuit in FIG. 4, and FIG. 5 is an air diagram showing the gas state (temperature, absolute humidity, relative humidity) shown at each point. Yes, the table of FIG. 6 shows values of temperature, relative humidity, and absolute humidity at P1-P8.

The temperature of the outdoor air OA as the air-conditioning air SA is heated by supplying the outdoor air OA as a cooling medium to the cooler 14 between the measurement points P1 to P5. After being heated by heat exchange, the temperature is finally raised from 7 ° C. to 44.5 ° C. by passing through the regeneration unit 12b of the desiccant rotor 12 and the humidifier 11.
On the other hand, the absolute humidity of the outdoor air OA as the air-conditioning air SA passes through the cooler 14 and the heater 15 between the measurement points P1 to P5, and is then humidified by the regeneration unit 12b of the desiccant rotor 12 to be humidified. By being humidified by the machine 11, it finally increases from 4.8 g / kg dry air to 14.4 g / kg dry air.
From the above, it can be said that the air conditioning system of the present invention appropriately exhibits humidification heating performance.

[Packaging of air conditioning system]
In the air conditioning system of the present invention, each component device, the first air conditioning channel R1 and the second air conditioning channel R2 are packaged inside the casing 30 to achieve compactness. Therefore, in the following, based on FIGS. 7 (a) and 7 (b), the arrangement of each component device inside the casing 30 and the formation of the first air conditioning flow path R1 and the second air conditioning flow path R2 will be described. 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. 7, and the flow of the indoor air RA during the dehumidifying and cooling operation being the exhaust VA will be described based on FIG. The flow of the outdoor air OA during the humidifying and heating operation being air-conditioned to be air-conditioning air SA will be described based on FIG. 9, and the flow of the indoor air RA being the exhaust VA during the humidifying and heating operation will be described based on FIG. Will be described.

  FIG. 7 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. It is configured to flow through a flow path formed on the side (the tip end side of the arrow X in FIG. 7A) and the other side (the base end side of the arrow X in FIG. 7A). In order to appropriately show the configuration, FIG. 7A 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 X in FIG. 7A). (B) has shown the state which orient | assigned the other side inside the casing 30 to the paper front side (base end side of the arrow X in FIG.7 (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. 7, the air conditioning system of the present invention includes a humidifier 11, a desiccant rotor 12, a first fan 18, a cooler 14, a heater 15, a second fan 16, and a first four-way valve inside a casing 30. 10 and the second four-way valve 17 are arranged compactly.
Specifically, the first four-way valve 10 and the second four-way valve 17 are arranged in a direction from one side of the side surface of the casing 30 to the other side (FIG. ) Are arranged so as to overlap each other in the direction of arrow X). As a result, the first four-way valve 10 and the second four-way valve 17 rotating around the rotation axis L can be accommodated in a compact manner in a state of functioning properly inside the casing 30.
Further, between the first four-way valve 10 and the second four-way valve 17, the upper side of the casing 30 (FIG. 7A) in a state orthogonal to the rotation axis L of the first four-way valve 10 and the second four-way valve 17. ) (B), substantially half the area of the tip end of the arrow Z) is divided into one side (the tip end side of the arrow X in FIG. 7A) and the other side (the arrow X in FIG. 7A). A first separation wall 31 is provided that bisects the base end side). The flow path through which the room air RA and the outdoor air OA flow through the first separation wall 31 and the casing 30, the flow path through the one side of the internal area of the casing 30, and the internal area of the casing 30 It is separated into a flow path flowing through the other side of the. 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 inside of the casing 30 are demonstrated by the form which demonstrates the air flow path of the specific 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]
In the state shown in FIGS. 7A and 7B, the first four-way valve 10 and the second four-way valve 17 are switched to a state where the first operation state shown in FIG. 1 can be realized.
On the upper surface 32 of the casing 30 (the surface on the tip side of the arrow Z in FIG. 7A), a first air inlet 33 is provided on one side of the inner region of the casing 30 (the tip of the arrow X in FIG. 7A). The outdoor air OA can be introduced into the first four-way valve 10 arranged on the side).
A first flow path forming space V1 is formed on the downstream side of the first four-way valve 10 by a first separation wall 31, a casing 30, and the like, and outdoor air is provided inside the first flow path forming space V1. A first fan 18 that sucks OA and pumps it downstream is provided.
On the downstream side of the first flow path forming space V1, a second flow path forming space V2 formed by the second separation wall 34, the casing 30, and the like is formed. In the second flow path forming space V2, The blower outlet of the first fan 18, the moisture absorption part 12a of the desiccant rotor 12, and the cooled medium inlet 14c of the cooler 14 are arranged in a state in which the outdoor air OA can flow in the order described.
On the downstream side of the second flow path forming space V2, a third flow path forming space V3 formed by the first separation wall 31, the casing 30, and the like is formed. In the third flow path forming space V3, The second four-way valve 17 is provided in such a form that the cooled medium outlet 14d of the cooler 14 and the outdoor air OA that has exited the cooler 14 are guided.
The second four-way valve 17 and the humidifier 11 are provided on the downstream side of the third flow path forming space V3, and the outdoor air OA that has passed through the humidifier 11 is provided with air conditioning air SA.
As described above, by forming the flow path, the outdoor air OA is guided from the first air inlet 33 to the first flow path forming space V1 via the first four-way valve 10, and the first flow path forming space. After being guided to the second flow path forming space V2 by the first fan 18 at V1 and flowing through the moisture absorbing portion 12a of the desiccant rotor 12 in the second flow path forming space V2, the cooler 14 is used as a fluid to be cooled. Circulate.
When the outdoor air OA is flowing through the cooler 14, from one side (the base end side of the arrow X in FIG. 7A) to the other side (the arrow X in FIG. 7A) of the inner region of the casing 30. To the tip side).
And after passing the humidifier 11 through the 2nd four-way valve 17, it is guide | induced to the air-conditioning object space (not shown) as air-conditioning air SA.

[Flow path and flow of indoor air RA during dehumidifying and cooling operation]
In the state shown in FIGS. 8A and 8B, the first four-way valve 10 and the second four-way valve 17 are switched to a state where the first operation state shown in FIG. 1 can be realized.
A second air inlet 36 through which the room air RA flows is provided on one side of the side surface of the casing 30 (the tip end side of the arrow X in FIG. 8A), and the room that has flowed in from the second air inlet 36 is provided. A first four-way valve 10 is arranged to allow air RA to flow in.
A fourth flow path forming space V4 formed by the first separation wall 31 and the casing 30 is formed on the downstream side of the first four-way valve 10, and the fourth flow path forming space V4 includes a cooler 14. A cooling medium inlet 14a is provided.
A fifth flow path forming space V5 formed by the second separation wall 34, the casing 30, and the like is formed on the downstream side of the fourth flow path forming space V4. The fifth flow path forming space V5 includes a cooler. 14, the medium outlet 14 b to be cooled, the heater 15, the regeneration unit 12 b of the desiccant rotor 12, the second fan 16, and the second four-way valve 17 to which the indoor air RA pumped by the second fan 16 is guided They are provided in the order of description in a state along the flow path of the air RA.
On the downstream side of the fifth flow path forming space V5, an air discharge pipe 37 for discharging the indoor air RA that has exited the second four-way valve 17 to the outside is provided.
As described above, since the flow path is formed, the indoor air RA is guided from the second air inlet 36 into the casing 30 and is guided to the fourth flow path forming space V4 via the first four-way valve 10. Then, after passing the cooler 14 as a cooling medium, the heater 15 is passed, the regeneration portion 12b of the desiccant rotor 12 is passed as regeneration air, and the second fan 16 causes the second four-way valve 17 to flow. It is pumped towards. The room air RA passes through the second four-way valve 17 and is led to the outside of the air-conditioning target space (not shown) as the exhaust VA through the air discharge pipe 37.
When the indoor air RA flows through the cooler 14, the other side of the inner region of the casing 30 (the tip side of the arrow X in FIG. 8A) to the one side (the arrow in FIG. 8A). To the base end side of X).

[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. 9 and 10 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.
The switching state of the first four-way valve 10 and the second four-way valve 17 during the humidifying and heating operation shown in FIGS. 9 and 10 corresponds to the state when the second operation state shown in FIG. 4 is executed.

[Flow of outdoor air OA during humidification heating operation]
As shown in FIGS. 9 (a) and 9 (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, in the following, description of the flow path and the components of the air conditioning system provided in the flow path will be omitted, and only the flow of outdoor air OA flowing through the flow path will be described.
The outdoor air OA is guided from the first air inlet 33 to the fourth flow path forming space V4 via the first four-way valve 10. Further, it is guided to the fifth flow path forming space V5 on the downstream side of the fourth flow path forming space V4, flows through the cooler 14 as the cooling medium, flows through the heater 15, and the moisture absorbing portion 12a of the desiccant rotor 12 After flowing through, the second fan 16 is pumped to the second four-way valve 17 side. Thereafter, the air passes through the humidifier 11 and is led to an air-conditioning target space (not shown) as air-conditioning air SA.

[Flow of room air RA during humidification heating operation]
As shown in FIGS. 10 (a) and 10 (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 above-described dehumidifying and cooling operation. Therefore, in the following, description of the flow path and the components of the air conditioning system provided in the flow path will be omitted, and only the flow of the indoor air RA flowing through the flow path will be described.
The room air RA flows into the casing 30 from the second air inlet 36, is guided to the first flow path forming space V1 via the first four-way valve 10, and is then passed through the first fan 18 to the second flow path. It is pumped to the formation space V 2, passes through the moisture absorption part 12 a of the desiccant rotor 12 as moisture absorption air in the second flow path formation space V 2, passes through the cooler 14 as the medium to be cooled, and passes through the second four-way valve 17. Then, the air is led to the air discharge pipe 37 and led to the outside of the air conditioning target space (not shown) as the exhaust VA.

[ Reference example ]
(A)
In the above embodiment, the air conditioning system includes the humidifier 11, the desiccant rotor 12, the first fan 18, the cooler 14, the heater 15, the second fan 16, the first four-way valve 10, and the second inside the casing 30. The four-way valve 17 is 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 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 air conditioning channel R2: second air conditioning channel L: rotary shaft 10 of the first and second four-way valves: first Four-way valve 11: Humidifier 12: Desiccant rotor 12a: Hygroscopic part 12b: Regenerating part 14: Cooler 15: Heater (an example of heating means)
17: Second four-way valve

Claims (2)

A desiccant rotor that consists of a breathable hygroscopic body that rotates and adsorbs the moisture of the gas that flows through the moisture absorption section, and that releases the absorbed moisture to the gas that flows through the regeneration section,
An air conditioning system comprising a cooler that cools the gas that has passed through the hygroscopic portion of the desiccant rotor by heat exchange with a cooling medium, heating means that can heat the gas, and a casing .
Equipped with a humidifier capable of humidifying gas,
A first air-conditioning flow path for air-conditioning by allowing the moisture absorption part of the desiccant rotor and the cooler to flow in the order described, and a gas as the cooling medium to the cooler, and heating by the heating means; A second air-conditioning flow path for air-conditioning through the regeneration section of the desiccant rotor;
A first operating state in which the first gas is air-conditioned in the first air-conditioning flow path and then humidified by the humidifier and guided to the air-conditioning target space as air-conditioning air and the regeneration air is guided to the regeneration unit of the desiccant rotor. And the second gas is air-conditioned in the second air-conditioning flow path and then humidified by the humidifier and led to the air-conditioning target space as air-conditioning air and the moisture-absorbing air is led to the moisture-absorbing part of the desiccant rotor. A switching means for selectively switching between two operating states is provided ,
The switching means guides the first gas to the first air-conditioning flow path and leads the regeneration air to the second air-conditioning flow path, and guides the second gas to the second air-conditioning flow path and absorbs moisture. A first four-way valve that switches the working air to the second operating state leading to the first air conditioning flow path;
The first gas conditioned in the first air conditioning channel is guided to the humidifier and then guided to the air-conditioning target space as air conditioning air, and the regeneration air flowing through the second air conditioning channel is exhausted as air. The first operating state leading to the outside of the target space, and the second gas conditioned in the second air conditioning flow path is guided to the humidifier after being guided to the humidifier and the first air conditioning. A second four-way valve that switches to the second operating state that guides the hygroscopic air flowing through the flow path to the air-conditioning target space as exhaust;
The casing includes at least the desiccant rotor, the cooler, the heating means, the first air conditioning channel, the second air conditioning channel, the first four-way valve, and the second four-way valve,
Further, inside the casing, the rotation shafts of the first four-way valve and the second four-way valve are arranged coaxially, and in a direction orthogonal to the rotation shafts of the first four-way valve and the second four-way valve, A portion between the first four-way valve and the second four-way valve is provided with a separation wall that separates a part of the internal space of the casing and forms a space through which the gas flows.
The air conditioning system in which the space separately constitutes at least a space through which the first gas flows and a space through which the second gas flows . The air conditioning system according to claim 1, wherein the humidifier is configured to humidify the first gas or the second gas as air conditioning air by directly spraying water.

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