JP2014181891A - Air conditioning system and operation method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system that can enhance air conditioning performance of controlling humidity, temperature, etc., of air-conditioning air although employing a relative simple configuration, and an operation method therefor.SOLUTION: An air conditioning system includes a first acting passage R3 in which air taken in from outside a room is circulated in a state of being connected to an exhaust passage R2 by a first connection part K1 in addition to an air supply passage R1, and also includes: a first heat exchange part 11 which cools air in the air supply passage R1 between a first air supply region D1a and a second air supply region D2a with air circulating in the exhaust passage R2; and a first heating part 12 for cooling which heats air in the exhaust passage R2 between the first connection part K1 and a first exhaust region D1b in cooling operation.

Description

  The present invention relates to a desiccant comprising an air supply passage for supplying air taken from the outdoors to an indoor space, an exhaust passage for exhausting air taken from the outdoors to the outdoors, and a breathable hygroscopic material between a plurality of regions through which the air flows. The present invention relates to an air conditioning system that includes a rotor unit that rotationally drives a rotor to dehumidify and humidify the air, and that can perform at least a cooling operation, and an operation method thereof.

As such an air conditioning system, one having a plurality of rotor portions is known (see Patent Document 1).
In the air conditioning system disclosed in Patent Document 1, as shown in FIG. 1, an air supply passage 12 that supplies air taken in from the outdoors to an indoor space, and an exhaust passage 14 that sucks out indoor air and exhausts the air to the outdoors. And a first desiccant between the first air supply region 3a disposed in the air supply passage 12 and the second air supply region 3b disposed downstream of the first air supply region 3a. Arranged in the first rotor section for rotating the rotor 3 and the third supply region 1a and the exhaust passage 14 disposed between the first supply region 3a and the second supply region 3b in the supply passage 12. And a second rotor section for rotating the second desiccant rotor 1 between the first exhaust region 1b provided.
Furthermore, heat exchange is performed between the air flowing between the first supply region 3a and the third supply region 3b in the supply passage 12 and the air flowing upstream of the first exhaust region 1b in the exhaust passage 14. The first heat exchanging unit 4 and the air flowing between the third air supply region 1a and the second air supply region 3b through the air supply passage 12 and the first heat exchange unit 4 and the first exhaust gas through the exhaust passage 14 A second heat exchanging unit 2 that exchanges heat with the air flowing between the region 1b and a heating unit 16 that heats the air that has passed through the second heat exchanging unit 2 in the exhaust passage 14; Yes.
With the above-described configuration, in the air conditioning system disclosed in Patent Document 1, the air taken in from the outside during the cooling operation is dehumidified in the first air supply region 3a of the first rotor unit, and the first heat exchange unit 4 is dehumidified. Cooling, dehumidifying in the third air supply area 1a of the second rotor part, cooling in the second heat exchange part 2, regenerating in the second air supply area 3b of the first rotor part, It can be supplied indoors as air for air conditioning with low humidity and low temperature.

Furthermore, in order to improve the air conditioning performance, the applicant has developed an air conditioning system shown in FIG. 10 as an improved invention of the technique disclosed in Patent Document 1.
In the air conditioning system, as shown in FIG. 10, instead of the first heat exchange unit 4 in the configuration disclosed in Patent Document 1, the first action branched from the supply passage R1 on the upstream side of the first supply region D1a. A heat exchange is provided between the air that includes the passage R3 and flows through the first working passage R3 and the air that flows between the first supply region D1a and the second supply region D2a in the supply passage R1. 3 The heat exchange part 10 is provided.
With this configuration, in the air conditioning system shown in FIG. 10, during the cooling operation, the air taken in from the outside during the cooling operation is dehumidified in the first air supply region D1a of the first rotor part D1, and the third heat exchange is performed. Cooled in the part 10, dehumidified in the third air supply area D2a of the second rotor part D2, cooled in the second heat exchange part 11, and regenerated in the first exhaust area D1b of the first rotor part D1, It can be supplied indoors as air for air conditioning with relatively low humidity and low temperature.
The temperature / relative humidity / absolute humidity / flow rate of the fluid in the passage portions P1 to P11 in FIG. 10 and the temperature / flow rate of the hot water in P12 and P13 are shown in the table of FIG.

JP 2008-57953 A

  In the technique disclosed in Patent Document 1 and the air conditioning system shown in FIG. 10, in the cooling operation, the air for air conditioning flowing through the air supply passage is the first air supply region of the first rotor portion. And the structure which flows through the 2nd air supply area | region is employ | adopted. For this reason, the flow rate of air flowing through the first air supply region on the moisture absorption side of the first rotor portion is the same as the flow rate of air flowing through the second air supply region on the regeneration side. It cannot be adjusted separately. That is, in this configuration, since the air flow rate on the moisture absorption side and the air flow rate on the regeneration side of the first rotor portion cannot be adjusted separately, the adjustment of the humidity and temperature of the air conditioning air is limited. There was room.

  The present invention has been made in view of the above-described problems. The object of the present invention is to improve the air conditioning performance of adjusting the humidity and temperature of air for air conditioning while adopting a relatively simple configuration. An object is to provide an air conditioning system and an operation method.

In order to achieve the above object, the air conditioning system of the present invention comprises:
The air supply passage that supplies the air taken from outside the room to the room, the exhaust passage that exhausts the air taken out from the room to the outside, and the desiccant rotor made of a breathable hygroscopic material between multiple areas through which the air flows rotates. And an air conditioning system capable of performing at least a cooling operation, including a rotor unit that performs dehumidification and humidification of the air.
A first working passage through which air taken in from the outside flows is connected to the exhaust passage and the first connecting portion, separately from the air supply passage,
As the rotor part,
A first rotor portion that rotationally drives a first desiccant rotor between a first air supply region disposed in the air supply passage and a first exhaust region disposed downstream of the first connection portion in the exhaust passage. When,
The second desiccant rotor is driven to rotate between a second air supply region disposed downstream of the first air supply region in the air supply passage and a first operation region disposed in the first operation passage. A second rotor portion,
A first heat exchange unit that cools the air between the first supply region and the second supply region of the supply passage with the air flowing through the exhaust passage during the cooling operation;
The cooling operation includes a first cooling heating unit that heats air between the first connection part and the first exhaust region in the exhaust passage.

According to the above characteristic configuration, particularly during cooling operation, the air for air conditioning flowing through the air supply passage is dehumidified in the first air supply region of the first rotor portion and is cooled in the first heat exchange portion. Then, the air is cooled in the second air supply region of the second rotor portion and supplied to the room in a relatively low temperature and low humidity state.
Here, in the present invention, in addition to the air supply passage, a first working passage through which air taken in from the outside flows and an exhaust passage through which the air taken out from the room is exhausted outside are provided. The air flowing through the passage passes through the first exhaust region of the first rotor part, and the air flowing through the first working passage passes through the first action region of the second rotor part.
That is, in the above configuration, the air in the different passages is allowed to pass through the first supply region and the first exhaust region of the first rotor portion, and the second supply region and the first action region of the second rotor portion are passed. Each of them also passes air from another passage. As a result, the flow rate of air passing through each of the plurality of regions of each rotor part can be set separately, and the adjustment range of the temperature and humidity of air for air conditioning can be widened.
In particular, in the first exhaust region on the regeneration side of the first rotor portion, air that flows through the exhaust passage and air that flows through the first working passage connected to the exhaust passage via the first connection portion. Therefore, it is possible to effectively regenerate the first desiccant rotor provided in the first rotor portion. Thereby, the air for air conditioning which passes the 1st air supply area | region of the moisture absorption side of a 1st rotor part can be dehumidified effectively, and air conditioning performance can be improved.

Further features of the air conditioning system of the present invention are as follows:
It is provided with an air flow rate adjusting mechanism capable of individually adjusting the air flow rate flowing through the air supply passage, the air flow rate flowing through the exhaust passage, and the air flow rate flowing through the first working passage. is there.

  According to the above characteristic configuration, the air flow rate adjusting mechanism can individually adjust the air flow rates of the air supply passage, the exhaust passage, and the first working passage, whereby the first and second desiccant rotors can be adjusted. The air flow rate flowing through each of the plurality of regions can be adjusted separately to achieve the desired air conditioning performance.

Further features of the air conditioning system of the present invention are as follows:
On the downstream side of the first connection portion of the exhaust passage, there is provided air blowing means for sucking both air flowing through the exhaust passage and air flowing through the first working passage and sending it to the downstream side. In the point.

  According to the above characteristic configuration, by providing the air blowing means on the downstream side of the first connection portion of the exhaust passage, both the air flowing through the exhaust passage and the air flowing through the first working passage by the air blowing means. Therefore, the configuration can be simplified as compared with the case where the air blowing means is provided in each passage.

Further features of the air conditioning system of the present invention are as follows:
A single common supply path that supplies outdoor air to both the air supply path and the first working path is provided.

  According to the above characteristic configuration, since the outdoor air is supplied to both the air supply passage and the first working passage by a single common supply passage, the configuration can be simplified.

Further features of the air conditioning system of the present invention are as follows:
A heating unit for heating the air upstream of the first air supply region in the air supply passage during the heating operation,
In the heating operation, the exhaust passage has a bypass path that bypasses the air extracted from the room from the first heat exchange unit.

During the heating operation, the air passing through the first air supply region of the first rotor portion out of the air conditioning air flowing through the air supply passage is at a relatively high temperature, and the exhaust passage is formed in the first heat exchange portion. When heat exchange is performed with relatively low-temperature air flowing therethrough, the temperature may decrease, so it is preferable not to allow the air flowing through the exhaust passage to pass through the first heat exchange section. On the other hand, it is necessary to pass the air flowing through the exhaust passage to the first exhaust region of the first rotor portion.
According to the above characteristic configuration, since the exhaust passage includes the bypass passage that bypasses the first heat exchange section, the air flowing through the exhaust passage is allowed to pass through the first heat exchange section during heating operation. However, the first exhaust region of the first rotor portion can be passed while maintaining a relatively high temperature, and the heating operation can be appropriately performed.

Further features of the air conditioning system of the present invention are as follows:
In addition to the air supply passage and the first operation passage, a second operation passage through which air taken from the outside flows is provided,
The third desiccant rotor is driven to rotate between a third air supply region disposed upstream of the first air supply region in the air supply passage and a second operation region disposed in the second operation passage. A third rotor portion;
During the cooling operation, the air between the third air supply region and the first air supply region is heated in the air supply passage, and the air upstream of the second operation region is heated in the second operation passage. A second heat exchange part to be exchanged;
In the cooling operation, a second cooling heating unit that heats the air between the second heat exchange unit and the second working region in the second working passage is provided.

  According to the above characteristic configuration, in the case where the third rotor portion is provided in addition to the first and second rotor portions, the air supply to the third air supply region on the moisture absorption side of the third rotor portion is provided particularly during cooling operation. Since the air flowing through the air passage is allowed to pass and the air flowing through the second working passage is passed through the second working region on the regeneration side of the third rotor portion, the third rotor portion is The flow rate of the air passing through the regeneration side region and the moisture absorption side region of the third desiccant rotor provided can be adjusted separately. Thereby, the range of adjustment of the temperature and humidity of air for air conditioning can be expanded, and air conditioning performance can be improved.

Further features of the air conditioning system of the present invention are as follows:
A second connecting portion for joining the downstream side of the second working region of the second working passage to the downstream side of the first exhaust region of the exhaust passage;
On the downstream side of the second connection portion of the exhaust passage, there is provided air blowing means for sucking both air flowing through the exhaust passage and air flowing through the second action passage and sending it out of the room. In the point.

  According to the above characteristic configuration, since the air blowing means is provided on the downstream side of the second connection portion of the exhaust passage, the air that flows through the exhaust passage and the air that flows through the second action passage by the air blowing means. Both can be inhaled, and the configuration can be simplified as compared with the case where a separate air blowing means is provided for each passage.

The characteristic configuration of the operation method of the air conditioning system described so far is
The first rotor portion and the second rotor portion are driven, air is passed through the exhaust passage in a non-bypass state where air is not passed through the bypass passage, and air is passed through the first working passage. In this state, the cooling operation is performed in which the air flowing through the air supply passage is supplied indoors.

  According to the above characteristic configuration, the cooling operation for cooling the room can be appropriately executed.

The characteristic configuration of the operation method of the air conditioning system described so far is
A state in which the first rotor portion and the second rotor portion are driven, air is passed through the exhaust passage in a bypass state where air is passed through the bypass passage, and air is passed through the first working passage. Thus, the heating operation for supplying the air flowing through the air supply passage indoors is performed.

  According to the above characteristic configuration, the heating operation for heating the room can be appropriately executed.

The characteristic configuration of the operation method of the air conditioning system described so far is
In the heating save operation that is an operation in which the amount of input energy is reduced by the heating operation,
The first rotor portion is driven, the second rotor portion is stopped, air is passed through the exhaust passage in a bypass state where air is passed through the bypass passage, and air is passed through the first working passage. It is in the point which supplies the air which flows through the said supply passage indoors in the state which does not flow.

  According to the above characteristic configuration, since the second rotor is stopped and air is not passed through the first working passage, the amount of input energy can be reduced by that amount, and the heating save which is an operation with a small amount of input energy in the heating operation. Driving can be performed appropriately.

Schematic block diagram showing the cooling operation of the air conditioning system according to the first embodiment Schematic block diagram showing heating save operation of the air conditioning system according to the first embodiment The schematic block diagram which shows the heating operation of the air conditioning system which concerns on 1st Embodiment. The graph which shows the relationship between the flow ratio of the air which flows through the moisture absorption side of the desiccant rotor, and the regeneration side, and the air conditioning performance The table | surface which shows the air-conditioning performance at the time of changing the flow rate ratio of the air which flows the moisture absorption side and regeneration side of this invention The graph which shows the temperature fall effect of the air for air conditioning at the time of changing the flow rate ratio of the air which flows the moisture absorption side of this invention, and the reproduction | regeneration side Schematic block diagram showing the cooling operation of the air conditioning system according to the second embodiment The schematic block diagram which shows the heating save operation of the air conditioning system which concerns on 2nd Embodiment. Schematic block diagram showing the heating operation of the air conditioning system according to the second embodiment Schematic configuration diagram showing conventional technology A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 1 when performing the cooling operation in the air conditioning system of the first embodiment. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 1 when performing the cooling operation in the air conditioning system of the first embodiment. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 1 when performing the cooling operation in the air conditioning system of the first embodiment. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 1 when performing the cooling operation in the air conditioning system of the first embodiment. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 1 when performing the cooling operation in the air conditioning system of the first embodiment. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 1 when performing the cooling operation in the air conditioning system of the first embodiment. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 1 when performing the cooling operation in the air conditioning system of the first embodiment. 10 is a table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 10 when performing the cooling operation in the conventional air conditioning system of FIG. 7 is a table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIG. 7 when performing the cooling operation in the air conditioning system of the second embodiment. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIGS. 2 and 8 when performing the heating save operation in the air conditioning system of the first and second embodiments. A table showing the temperature, humidity, flow rate, etc. of the fluid in each passage portion shown in FIGS. 3 and 9 when the heating operation is executed in the air conditioning system of the first and second embodiments.

[First Embodiment]
The air conditioning system 100 and its operation method of the present application improve the air conditioning performance of adjusting the temperature, humidity, etc. of the air conditioning air supplied indoors in the air conditioning target space while maintaining a relatively simple configuration. About.
1st Embodiment of the air conditioning system 100 of this invention is described based on FIGS.
The air conditioning system 100 according to the first embodiment includes an air supply passage R1 that supplies air taken from the outside to the indoor, an exhaust passage R2 that exhausts air taken from the indoor to the outside, and an air supply passage R1 from the outside. And a first working passage R3 through which the taken-in air flows. Then, desiccant rotors D1c and D2c made of a breathable hygroscopic material between a plurality of regions through which air flows in order to dehumidify and humidify the air flowing through the air supply passage R1, the exhaust passage R2, and the first working passage R3. The first rotor part D1 and the second rotor part D2 that rotationally drive the motor are configured.
The downstream end of the first working passage R3 is connected to the exhaust passage R2 through the first connection portion K1. A first fan F1 and a second fan F2 for sucking air from the respective passages are provided at the outlet portions of the supply passage R1 and the exhaust passage R2. By operating the first fan F1 and the second fan F2, air flows through each of the air supply passage R1, the exhaust passage R2, and the first working passage R3. Here, the second fan F2 functions as a blowing unit that causes the air in both the exhaust passage R2 and the first working passage R3 to flow through the operation thereof.
Although details will be described later, the exhaust flow path R2 is provided with flow rate adjusting valves 21 and 22 capable of adjusting the flow rate of air flowing through the passage, and the first working path R3 includes the flow path. A flow rate adjustment valve 24 capable of adjusting the flow rate of air flowing therethrough is provided. By adjusting the rotation speed of the first fan F1 and the second fan F2 and the opening degree of the flow rate adjusting valves 21, 22, and 24, the air supply passage R1, the exhaust passage R2, and the first working passage R3 are respectively adjusted. It is configured so that the flow rate of the flowing air can be adjusted individually. The flow rate adjusting valves 21, 22, 24, the first fan F1, and the second fan F2 function as an air flow rate adjusting mechanism.
Air is supplied from a single common supply path R0 to both the air supply path R1 and the first working path R3, thereby simplifying the configuration.

The configuration of the first rotor part D1 and the second rotor part D2 will be described. Since the first rotor portion D1 and the second rotor portion D2 have substantially the same configuration, the configuration of the first rotor portion D1 will be described below.
The desiccant rotor D1c provided in the first rotor part D1 is rotationally driven at a relatively slow predetermined rotational speed by a rotation mechanism part M1 such as a motor, the center part of which is fixed to the rotating shaft to be rotated. It is comprised as a disk-shaped or column-shaped member arrange | positioned with the attitude | position crossing the area | regions D1a and D1b arrange | positioned in this. The desiccant rotor D1c is formed in a honeycomb shape having a large number of passages penetrating in the direction along the rotation axis, and air passes through the desiccant rotor D1c in each of the regions D1a and D1b. The desiccant rotor D1c carries a known adsorbent such as zeolite, silica gel, activated carbon, etc., and is a breathable moisture absorber.
The rotor portion D1 including such a desiccant rotor D1c has a heat radiation effect when the desiccant rotor D1c absorbs moisture when relatively low-temperature air passes through one of the plurality of regions D1a and D1b. The desiccant rotor D1c is in a state where it adsorbs moisture from the air. The portion of the desiccant rotor D1c that has adsorbed the moisture moves to the other region by the rotational drive.
On the other hand, the relatively high temperature air passes through the other of the plurality of regions D1a and D1b, so that the air is humidified with a decrease in temperature due to the endothermic action when the desiccant rotor D1c is dehumidified. The rotor D1c is regenerated by desorbing the adsorbed moisture. The regenerated portion of the desiccant rotor D1c is moved to the one region by the rotational drive.
In this way, the rotor portion D1 is configured to be able to dehumidify and humidify each of the air passing through the plurality of regions D1a and D1b.

  As described above, the first rotor portion D1 capable of performing dehumidification / humidification of air is disposed downstream of the first connection portion K1 in the first supply region D1a and the exhaust passage R2 disposed in the supply passage R1. The first desiccant rotor D1c is rotationally driven between the first exhaust region D1b and the first exhaust region D1b. On the other hand, the second rotor portion D2 includes a second air supply region D2a disposed on the downstream side of the first air supply region D1a in the air supply passage R1, and a first operation region D2b disposed in the first operation passage R3. The second desiccant rotor D2c is rotationally driven during

Further, the air conditioning system 100 is configured as follows in order to heat and cool the air flowing through each passage.
First heat that exchanges heat between the air between the first air supply region D1a and the second air supply region D2a in the air supply passage R1 and the air that flows through the upstream side of the first connection portion K1 of the exhaust passage R2. An exchange unit 11 is provided. In this embodiment, the said 1st heat exchange part 11 is comprised by the orthogonal type sensible heat exchanger.
In the heating save operation in the circuit state shown in FIG. 2 (concept included in the heating operation, the operation is more energy saving than the heating operation), and in the heating operation in the circuit state shown in FIG. Of the flowing air, the air after passing through the first air supply region D1a of the first rotor part D1 is at a relatively high temperature, and the first heat exchanging part 11 flows through the exhaust passage R2. When heat is exchanged with air at a low temperature, the temperature may be lowered. Therefore, it is preferable not to allow the air flowing through the exhaust passage R2 to pass through the first heat exchange unit 11. On the other hand, however, air needs to pass through the first exhaust region D1b of the first rotor portion D1 so that the first desiccant rotor D1c located in that region absorbs moisture. Therefore, the exhaust passage R2 includes a bypass passage R2a that bypasses the first heat exchanging portion 11 during the heating save operation and the heating operation, and the air flowing through the exhaust passage R2 is passed through the first heat exchanging portion 11. On-off valves 21 and 22 that switch between the passing side and the side through which the bypass passage R2a flows are provided. The on-off valves 21 and 22 can be constituted by the flow rate adjusting valves 21 and 22 described above.

  The exhaust passage R2 is provided with a first cooling heating section 12 that heats the air flowing on the upstream side of the first air supply region D1a of the first rotor section D1 on the downstream side of the first connection section K1. Yes. The first cooling heating unit 12 has a fluid through which a hot water passage R6 through which hot water heated by a heat source (not shown) flows and an exhaust passage R2 on the upstream side of the first air supply region D1a pass through each other. It is arranged in a heat exchangeable state, and air is heated by the heat of hot water.

  The heating passage 10 for heating the air that flows through the upstream side of the first supply region D1a of the first rotor portion D1 is provided in the supply passage R1. In the heating unit 10 for heating, the fluid flowing through the hot water passage R5 through which hot water heated by a heat source (not shown) flows and the air supply passage R1 upstream of the first air supply region D1a are heated. It is arranged in a replaceable state, and air is heated by the heat of hot water.

Next, the cooling operation, the heating save operation, and the heating operation executed by the air conditioning system 100 described so far will be described in the order of description.
[Cooling operation]
During the cooling operation, as shown in FIG. 1, the heating heating unit 10 is in a non-operating state in which warm water does not flow through the hot water passage R5, and the first cooling heating unit 12 supplies hot water to the hot water passage R6. The exhaust passage R2 is in a state in which air flows through the first heat exchange unit 11 (non-bypass state), and both the first rotor unit D1 and the second rotor unit D2 are driven. State.
In this state, the air flowing through the air supply passage R1 passes through the non-actuated heating heating unit 10 and is dehumidified in the first air supply region D1a of the first rotor unit D1, so that the first heat exchange unit 11, the temperature is lowered by heat exchange with the air RA taken out indoors, and after the temperature is lowered in the second air supply region D2a of the second rotor part D2, the air SA for air conditioning having a relatively low temperature and low humidity is obtained. Supplied indoors.
The air flowing through the first working passage R3 rises in temperature in the first working region D2b of the second rotor portion D2, and then merges with the air flowing through the exhaust passage R2 at the first connecting portion K1.
The air flowing through the exhaust passage R2 rises in temperature by heat exchange with the relatively high temperature air flowing through the air supply passage R1 in the first heat exchange section 11, and the first working passage in the first connection section K1. The first desiccant rotor that joins the air flowing through R3, is heated by the first cooling heating unit 12 in the operating state, passes through the first exhaust region D1b of the first rotor unit D1, and is located in that region. After regenerating D1c, it is discharged outdoors as exhaust EA. As a result, high-temperature air is circulated in the first exhaust region D1b at a large flow rate that combines the air flowing through the exhaust passage R2 and the air flowing through the first working passage R3. The located first desiccant rotor D1c can be reproduced satisfactorily.
In the cooling operation, the air temperature / relative humidity / absolute humidity / flow rate in the passage portions P1 to P11 in FIG. 1 and the hot water temperature / flow rate in P12 to P13 are shown in the tables of FIGS. It shows. In each of the tables shown in FIGS. 11 to 17, the exhaust passage R <b> 2 is maintained in a state where the flow rate of the air conditioning air SA (air flowing through the supply passage R <b> 1) supplied indoors during the cooling operation is kept constant. The flow rate of the air flowing through and the flow rate of the air flowing through the first working passage R3 are different.
Although details will be described later, as shown in the tables of FIGS. 11 to 17, the air SA for air conditioning is the flow rate of the air flowing through the exhaust passage R2 and the air flowing through the first working passage R3. It can be seen that the temperature and humidity can be adjusted by changing the flow rate. By this adjustment, the air for air conditioning can be adjusted to a lower temperature side and a lower humidity side than those of the prior art shown in the table of FIG.

[Heating saving operation]
As described above, the heating save operation is an energy-saving heating operation that can be executed with the input energy reduced. At the time of the heating save operation, as shown in FIG. 2, the heating heating unit 10 is in an operating state in which warm water flows through the hot water passage R5, and the first cooling heating unit 12 includes hot water in the hot water passage R6. The exhaust passage R2 is a non-operating state that does not flow, and the exhaust passage R2 is a flow state (bypass state) that does not flow air to the first heat exchange unit 11 side but to the bypass path R2a side. The first rotor portion D1 is in a driving state, and the second rotor portion D2 is in a stopped state.
That is, in the heating save operation, only a single rotor portion is in a driving state.
In this state, the air flowing through the air supply passage R1 passes through the heating heating unit 10 in the operating state and is heated, passes through the first air supply region D1a of the first rotor part D1, and is humidified. Passes through the exchanging part 11 without heat exchange, passes through the second air supply region D2a of the stopped second rotor part D2, and becomes air SA for air conditioning of relatively high temperature and high humidity, and is supplied indoors. Is done.
Since the second rotor portion D2 is in a stopped state in the first working path R and it is not necessary to cause air to flow through the first working region D2a, air is not allowed to flow.
The air flowing through the exhaust passage R2 flows through the bypass passage R2a, passes through the first cooling heating unit 12 in the non-operating state, passes through the first exhaust region D1b of the first rotor portion D1, and passes through the first cooling region D1b. After being dehumidified by the first desiccant rotor D1c located at, the exhaust is discharged to the outdoors as exhaust EA.
In the heating save operation, the air temperature / relative humidity / absolute humidity / flow rate in each passage portion P1 to P5 in FIG. 2 and the temperature / flow rate of hot water in P6 and P7 are shown in the table of FIG. Show.

[Heating operation]
The heating operation is a heating operation with a large input energy compared to the above-described heating save operation, and the air conditioning air SA during the heating operation is compared with the air conditioning air SA during the heating save operation. Can be humid. At the time of the heating operation, as shown in FIG. 3, the heating heating unit 10 is in an operating state in which warm water flows through the hot water passage R5, and the first cooling heating unit 12 supplies hot water to the hot water passage R6. The exhaust passage R2 is a non-operating state in which the air does not flow, and the exhaust passage R2 is a flow state (bypass state) in which air is not passed to the first heat exchange unit 11 side but to the bypass path R2a side. The rotor part D1 and the second rotor part D2 are both in a driving state.
That is, in the heating operation, both rotor parts are in a driving state.
In this state, the air flowing through the supply passage R1 passes through the heating heating unit 10 in the operating state and is heated, passes through the first supply region D1a of the first rotor unit D1 in the driving state, and is humidified. The air SA passes through the first heat exchanging part 11 without heat exchange, passes through the second air supply region D2a of the second rotor part D2 in the driven state, is humidified, and has relatively high temperature and high humidity air SA. It is supplied indoors.
The air flowing through the first working passage R3 passes through the first working region D2b of the second rotor portion D2 in the driven state and is dehumidified, and then flows through the exhaust passage R2 at the first connecting portion K1. To join.
The air flowing through the exhaust passage R2 flows through the bypass passage R2a, merges with the air flowing through the first working passage R3 at the first connection portion K1, and passes through the first cooling heating unit 12 in the non-operating state. Passes through the first exhaust region D1b of the first rotor portion D1, is dehumidified by the first desiccant rotor D1c located in that region, and is then discharged outdoors as exhaust EA. Accordingly, since the air having a large flow rate including the air flowing through the exhaust passage R2 and the air flowing through the first working passage R3 can flow through the first exhaust region D1b, the moisture content of the air Can be satisfactorily absorbed by the first desiccant rotor D1c located in that region, and when the first desiccant rotor D1c located in that region is located in the first air supply region D1a, the first air supply region Air conditioning air SA passing through D1a can be sufficiently humidified.
In the heating operation, the temperature, relative humidity, absolute humidity, and flow rate of air in each of the passage portions P1 to P8 shown in FIG. 3 and the temperature and flow rate of hot water in P9 and P10 are shown in the table of FIG. Show.

This application adjusts the temperature and humidity of air-conditioning air supplied indoors by adopting a configuration in which the flow rate of air flowing through each of the plurality of regions of the rotor portions D1 and D2 can be adjusted separately. The air conditioning capacity to be adjusted is made adjustable.
Hereinafter, a test for evaluating the performance of the configuration will be described. In this test, the desiccant rotor of the rotor part (Nippon Exlan Kogyo Co., Ltd. “ex rotor” (corrugated size: ss, thickness 100 mm, diameter 210 mm) was rotated at a rotational speed of 40 rph (h ⁻¹ ) On the other hand, the moisture absorption side air having a temperature of 30 ° C. and a relative humidity of 60% and the regeneration side air having a temperature of 32 ° C. and a relative humidity of 25% are passed while changing the flow rate ratio thereof. The moisture absorption efficiency (the ratio of the actual moisture absorption amount to the moisture absorption amount when ideally absorbed) and the regeneration efficiency (the ratio of the actual regeneration amount to the regeneration amount when ideally reproduced) were determined.
Also, measure the temperature and humidity of the moisture absorption side air before and after passing through the desiccant rotor, and the temperature and humidity of the regeneration side air, and per unit humidity change amount for each of the moisture absorption side air and the regeneration side air. The amount of temperature change was determined.
The test results are shown in the graph of FIG.

As can be seen from the graph showing the test results in FIG. 4, it can be seen that the moisture absorption efficiency and the regeneration efficiency of the desiccant rotor can be changed by changing the flow rate ratio between the moisture absorption side air and the regeneration side air.
Specifically, the moisture absorption efficiency tends to decrease as the value of the moisture absorption side air flow rate / regeneration side air flow rate increases, and the regeneration efficiency increases as the value of the moisture absorption side air flow rate / regeneration side air flow rate increases. Tend to be.
It can also be seen that the temperature change amount per unit humidity change amount varies depending on the value of the moisture absorption side air flow rate / regeneration side air flow rate in each of the moisture absorption side air and the regeneration side air.
From the above, it can be seen that the air conditioning capacity in the rotor portion can be adjusted by controlling the moisture absorption side air flow rate / regeneration side air flow rate.

Next, in the above-described air conditioning system 100, when performing the cooling operation, the flow rate of the air (SA) passing through the second supply region D2a of the second rotor part D2 and the first action of the second rotor part D2 The temperature difference ΔT between SA and OA when the flow rate ratio with the flow rate of air (OA) passing through the region D2b was changed was obtained by calculation.
The calculation results are shown in FIGS. Each state of A to H in FIG. 5 corresponds to A to H of FIG. Detailed data in each state of A to H is shown in each of the tables of FIGS. As shown in the calculation results of FIGS. 5 and 6, the inventors adopt the configuration of the air conditioning system 100 of the present invention and adjust the flow rate ratio of SA / OA to adjust the SA from the temperature of OA. The knowledge that the degree of temperature decrease can be adjusted was obtained. In particular, as shown in FIG. 6, in the air conditioning system 100 of the present invention, the SA temperature can be lowered from the OA temperature as SA / OA is increased.

[Second Embodiment]
In addition to the configuration of the air conditioning system 100 of the first embodiment, the air conditioning system 100 of the second embodiment includes a second working path R4 through which air flows, and a third rotor portion D3, a second heat exchange. The point which is equipped with the part 13 and the heating part 14 for 2nd cooling, and is aiming at the improvement of an air-conditioning capability differs.
Hereinafter, while describing a different configuration from the air conditioning system 100 of the first embodiment, the same reference numeral is assigned to the same configuration, and the description thereof may be omitted.

The second working passage R4 is provided with a second connection portion K2 to which the downstream end of the exhaust passage R2 is connected on the downstream side thereof. A flow rate adjusting valve 23 capable of adjusting the flow rate of the air flowing through the second working passage R4 is provided on the upstream side of the second connection portion K2, and on the downstream side of the second connection portion K2, the above-described flow rate adjustment valve 23 is provided. The second fan F2 is provided.
By operating the second fan F2 in this configuration, air can be sucked from all of the exhaust passage R2, the first working passage R3, and the second working passage R4 and sent to the downstream side.
The single common supply path R0 is connected to the upstream side of the air supply path R1, the first working path R3, and the second working path R4, and supplies air to all of these paths.

  The third rotor portion D3 includes a third air supply region D3a disposed upstream of the first air supply region D1a in the air supply passage R1 and a second operation region D3b disposed in the second operation passage R4. In the meantime, the third desiccant rotor D3c is rotationally driven by a rotational drive unit M3 such as a motor.

The following configuration is adopted as heating and cooling of air flowing through each passage.
The second heat exchanging unit 13 includes an air between the third air supply region D3a and the first air supply region D1a in the air supply passage R1, and an air upstream of the second operation region D3b in the second operation passage R4. Is an orthogonal sensible heat exchanger for exchanging heat.
The second cooling heating unit 14 has a second action between the hot water passage R6 through which hot water flows after passing through the first cooling heating part 12, and between the second heat exchange unit 13 and the second action region D3b. A passage R4 is provided. The second cooling heating unit 14 heats the air flowing between the second heat exchange unit 13 and the second working region D3b in the second working channel R4 with hot water.
The second working passage R4 allows air to flow during the cooling operation and does not flow air during the heating save operation and the heating operation. Therefore, the second heat exchange unit 13 performs heat exchange only during the cooling operation, The second cooling heating section 14 is in an operating state in which hot and cold water flows only during the cooling operation.

Next, the cooling operation, the heating save operation, and the heating operation executed by the air conditioning system 100 according to the second embodiment will be described in the order of description.
[Cooling operation]
During the cooling operation, as shown in FIG. 7, the heating heating unit 10 is in a non-operating state in which the hot water does not flow through the hot water passage R5, and the first cooling heating unit 12 and the second cooling heating unit 14 are The hot water passage R6 is in an operating state in which hot water is allowed to flow, and the exhaust passage R2 is in a state in which air is passed through the first heat exchanging portion 11 (non-bypass state). The rotor part D2 and the third rotor part D3 are in a driving state.
In this state, the air flowing through the air supply passage R1 passes through the non-actuated heating heating unit 10, is dehumidified in the third air supply region D3a of the third rotor unit D3, and is then in the second heat exchange unit. 13, the temperature is lowered by heat exchange with low-temperature air flowing through the second working passage R <b> 4, dehumidified in the first air supply region D <b> 1 a of the first rotor portion D <b> 1, and taken out from the indoors by the first heat exchange portion 11. The temperature is lowered by heat exchange with the low-temperature air, and after the temperature is lowered in the second air supply region D2a of the second rotor part D2, the air SA for relatively low-temperature and low-humidity is supplied to the room as air SA. The
The air flowing through the first working passage R3 is dehumidified in the first working region D2b of the second rotor portion D2, and then merges with the air flowing through the exhaust passage R2 at the first connecting portion K1.
The air flowing through the second working passage R4 is heated by the second heat exchanging portion 13 by heat exchange with the relatively high temperature air flowing through the air supply passage R1, and is supplied to the second cooling heating portion 14. And heated through the second action region D3b of the third rotor part D3, regenerates the third desiccant rotor D3c located in that region, and then flows through the exhaust passage R2 at the second connection part K2. Merge with air.
The air flowing through the exhaust passage R2 rises in temperature by heat exchange with the relatively high temperature air flowing through the air supply passage R1 in the first heat exchange section 11, and the first working passage in the first connection section K1. The first air located in the first exhaust region D1b of the first rotor part D1 passes through the first cooling part 12 that is joined to the air flowing through R3 and heated by the first cooling heating part 12 in the operating state. After regenerating the desiccant rotor D1c, it is discharged to the outside as exhaust EA.
In the cooling operation, the air temperature / relative humidity / absolute humidity / flow rate in the passage portions P1 to P15 in FIG. 7 and the hot water temperature / flow rate in P16 to P18 are shown in the table of FIG. ing.

[Heating saving operation, heating operation]
In the heating save operation and the heating operation, the third rotor portion D3 is not driven and air is not allowed to flow through the second working passage R4 (the flow rate adjusting valve 23 is closed). It is the same state as the heating save operation and heating operation of one embodiment. For this reason, the temperature, relative humidity, absolute humidity, and flow rate of air in each passage portion in FIGS. 8 and 9 are the same as those in the first embodiment (same as those shown in the tables of FIGS. 20 and 21).
Therefore, the detailed explanation is omitted here.

[Another embodiment]
(1) In the first embodiment, the fan F2 is provided on the downstream side of the first connection portion K1, and the fan F2 has a plurality of passages (exhaust passage R2 and first passage) before being connected to the first connection portion K1. A configuration is adopted in which air is sucked from the working passage R3) and sent to the downstream side, and the air flow rate in each passage is individually adjusted by adjusting the opening of a flow rate adjusting valve provided in the passage.
In the second embodiment, the fan F2 is provided on the downstream side of the second connection portion K2, and the fan F2 has a plurality of passages (exhaust passages) before being connected to the first connection portion K1 and the second connection portion K2. R2, first working passage R3, and second working passage R4) are configured to suck in air and send it to the downstream side. The air flow rate in each passage is individually adjusted by adjusting the opening degree of a flow regulating valve provided in the passage. The configuration to adjust is shown.
However, in the first and second embodiments, a configuration in which a fan is provided in each of the plurality of passages on the upstream side of the first connection portion K1 or the second connection portion K2 may be employed. In this case, the flow rate adjustment valve can be omitted because the flow rate of the air flowing through each passage only needs to be adjusted by adjusting the rotational speed of the fan.

(2) In the second embodiment, the configuration including the second connection portion K2 for connecting the second working passage R4 to the exhaust passage R2 is shown, but the configuration in which the second connection portion K2 is omitted may be adopted. I do not care. That is, the second working passage R4 is not connected to the exhaust passage R2, and the air flowing through the first working passage R3 is discharged to the outside immediately after passing through the second working region D3b of the third rotor portion D3. May be adopted.

(3) In the first and second embodiments, the first heat exchange unit 11 employs an orthogonal sensible heat exchanger. However, a sensible heat rotor unit having a sensible heat exchange rotor may be employed separately. Absent. When the configuration is adopted, the air flowing through the supply passage R1 is allowed to pass through a partial region of the sensible heat rotor portion, and the air flowing through the exhaust passage R2 is passed through the other portion of the sensible heat rotor portion. A sensible heat exchange rotor is disposed in a state of passing through the region and crossing the partial region and the other region, and a rotational drive mechanism such as a motor for rotationally driving the sensible heat exchange rotor is provided.
As a result, during cooling operation, the sensible heat rotor portion is set in a driving state to exchange heat between the air flowing through the air supply passage R1 and the air passing through the exhaust passage R2. On the other hand, at the time of heating save operation and heating operation, the sensible heat rotor portion is set in a stopped state so that the air flowing through the supply passage R1 and the air passing through the exhaust passage R2 are allowed to pass without exchanging heat.
In this configuration, the bypass R2a and the flow rate adjusting valves 21 and 22 can be omitted.

(4) In the first and second embodiments, the flow rate of the air flowing through the exhaust passage R2 is adjusted, and the air flowing through the exhaust passage R2 is passed through the first heat exchanging portion 11 and the bypass passage. As a valve to be switched between the side through which R2a flows, a flow rate adjusting valve 21 provided in a passage through which air guided to the first heat exchanging unit 11 flows and a flow rate adjusting valve 22 provided in the bypass path R2a are provided. Indicated.
However, the flow rate adjusting valves 21 and 22 include a switching valve 23 at a branch portion that branches into the first heat exchanging portion 11 side and the bypass path R2a side in the exhaust passage R2, and a flow rate adjusting function on the upstream side thereof. It is possible to appropriately change the configuration including a flow rate adjusting valve having

(5) In the first and second embodiments, in the heating save operation, an example is shown in which air is not passed through the first working passage R3. However, air may be passed through the first working passage R3. . Thereby, the moisture absorption amount to the first desiccant rotor D1c in the first exhaust region D1b of the first rotor part D1 is increased, and the air for air conditioning passing through the first supply region D1a of the first rotor part D1 is more It can be sufficiently humidified.

  INDUSTRIAL APPLICABILITY The air conditioning system and its operating method of the present invention are effective as an air conditioning system and its operating method that can improve the air conditioning performance for adjusting the humidity and temperature of air for air conditioning while adopting a relatively simple configuration. Is available.

10: heating unit 11: first heat exchange unit 12: first cooling heating unit 13: second heat exchange unit 14: second cooling heating unit D1: first rotor unit D1a: first air supply region D1b : 1st exhaust region D1c: 1st desiccant rotor D2: 2nd rotor part D2a: 2nd supply area | region D2b: 1st action area | region D2c: 2nd desiccant rotor D3: 3rd rotor part D3a: 3rd supply area | region D3b : Second action region D3c: third desiccant rotor K1: first connection part K2: second connection part R0: common supply path R1: air supply path R2: exhaust path R2a: bypass path R3: first action path R4: first 2 Action passage OA: Outdoor air SA: Air for air conditioning EA: Exhaust RA: Indoor air

Claims (10)

The air supply passage that supplies the air taken from outside the room to the room, the exhaust passage that exhausts the air taken out from the room to the outside, and the desiccant rotor made of a breathable hygroscopic material between multiple areas through which the air flows rotates. And an air conditioning system capable of performing at least a cooling operation, comprising a rotor unit that dehumidifies and humidifies the air.
A first working passage through which air taken in from the outside flows is connected to the exhaust passage and the first connecting portion, separately from the air supply passage,
As the rotor part,
A first rotor portion that rotationally drives a first desiccant rotor between a first air supply region disposed in the air supply passage and a first exhaust region disposed downstream of the first connection portion in the exhaust passage. When,
The second desiccant rotor is driven to rotate between a second air supply region disposed downstream of the first air supply region in the air supply passage and a first operation region disposed in the first operation passage. A second rotor portion,
A first heat exchange unit that cools the air between the first supply region and the second supply region of the supply passage with the air flowing through the exhaust passage during the cooling operation;
An air conditioning system including a first cooling heating unit that heats air between the first connection part and the first exhaust region in the exhaust passage during the cooling operation.   An air flow rate adjusting mechanism capable of individually adjusting an air flow rate flowing through the air supply passage, an air flow rate flowing through the exhaust passage, and an air flow rate flowing through the first working passage. 1. The air conditioning system according to 1.   On the downstream side of the first connection portion of the exhaust passage, there is provided air blowing means for sucking both air flowing through the exhaust passage and air flowing through the first working passage and sending it to the downstream side. The air conditioning system according to claim 1 or 2.   The air conditioning system according to any one of claims 1 to 3, wherein a single common supply path for supplying outdoor air is provided to both the air supply path and the first working path. A heating unit for heating the air upstream of the first air supply region in the air supply passage during the heating operation,
The air conditioning system according to any one of claims 1 to 4, wherein the exhaust passage includes a bypass passage that bypasses the first heat exchange unit for air taken out from the room during the heating operation. In addition to the air supply passage and the first operation passage, a second operation passage through which air taken from the outside flows is provided,
The third desiccant rotor is driven to rotate between a third air supply region disposed upstream of the first air supply region in the air supply passage and a second operation region disposed in the second operation passage. A third rotor portion;
During the cooling operation, the air between the third air supply region and the first air supply region is heated in the air supply passage, and the air upstream of the second operation region is heated in the second operation passage. A second heat exchange part to be exchanged;
6. The apparatus according to claim 1, further comprising: a second cooling heating unit configured to heat air between the second heat exchange unit and the second operation region in the second operation passage during the cooling operation. The air conditioning system according to item. A second connecting portion for joining the downstream side of the second working region of the second working passage to the downstream side of the first exhaust region of the exhaust passage;
On the downstream side of the second connection portion of the exhaust passage, there is provided air blowing means for sucking both air flowing through the exhaust passage and air flowing through the second action passage and sending it out of the room. The air conditioning system according to claim 6. It is the operating method of the air-conditioning system according to claim 5,
The first rotor portion and the second rotor portion are driven, air is passed through the exhaust passage in a non-bypass state where air is not passed through the bypass passage, and air is passed through the first working passage. An operation method of an air conditioning system for executing the cooling operation for supplying air flowing through the supply passage indoors in a state. It is the operating method of the air-conditioning system according to claim 5,
A state in which the first rotor portion and the second rotor portion are driven, air is passed through the exhaust passage in a bypass state where air is passed through the bypass passage, and air is passed through the first working passage. The operation method of the air conditioning system for executing the heating operation for supplying the air flowing through the supply passage indoors. It is the operating method of the air-conditioning system according to claim 5,
In the heating save operation that is an operation in which the amount of input energy is reduced in the heating operation,
The first rotor portion is driven, the second rotor portion is stopped, air is passed through the exhaust passage in a bypass state where air is passed through the bypass passage, and air is passed through the first working passage. An operating method of an air conditioning system that supplies air flowing through the air supply passage indoors without flowing.

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