KR102289482B1 - Air conditioning system - Google Patents

Abstract

The air conditioning system includes a housing having a supply passage and an exhaust passage, a total heat exchanger disposed in the housing and performing energy exchange with air, a dehumidification rotor arranged to rotate in the housing and partially dehumidify air and the other portion is regenerated; , a first heat exchange part for transferring air to the dehumidification rotor after performing heat exchange with the air that has passed through the total heat exchanger, and a second heat exchange part for performing heat exchange with air at an upstream side of the dehumidification rotor in an exhaust passage, the housing comprising: The inlet for introducing indoor air to the upstream side of the total heat exchanger of the exhaust passage, the transfer passage for delivering the air that has passed through the total heat exchanger in the exhaust passage to the upstream side of the second heat exchanger, and the outlet for discharging the air that has passed through the dehumidification rotor in the exhaust passage to the outside further includes

Description

Air conditioning system

The embodiments relate to an air conditioning system, and more particularly, to an air conditioning system having an improved dehumidification and heating/cooling function.

An air conditioning system is a system that performs a cooling operation or heating operation to control the temperature and humidity of a partitioned space such as an indoor space of a building, or a ventilation operation for exchanging indoor and outdoor air.

Air conditioning systems are used in a variety of areas from large buildings or large spaces in public places to narrow spaces where individuals live and work. Efforts to develop technologies to overcome the

For example, in a house or commercial building, an energy recovery type ventilation device that recovers energy from air passing through the room and the outside for ventilation is installed. In general, a total heat exchanger capable of recovering heat from air or transferring heat to air is used in an energy recovery type ventilation device.

1 shows a total heat exchange rotor 22 and a dehumidification rotor 21 and cooling inside a housing 10 having a supply passage 11 and an exhaust passage 12 according to U.S. Patent Publication No. 6,199,388, which is reference technology 1; It shows an air conditioning system equipped with a coil 41 .

2 and 3 are graphs showing changes in temperature and humidity of air by the air conditioning system of FIG. 1 . Figure 2 shows the change in temperature and humidity of the air when the relative humidity of the indoor return air (RA) is 50% and the temperature is 24 degrees Celsius, Figure 3 is the indoor return air (RA) has a relative humidity of 80% and the temperature It represents the change in temperature and humidity of air at 24 degrees Celsius.

According to the air conditioning system of Reference Technology 1 shown in FIGS. 1 to 3 , when the humidity of the indoor return air RA flowing into the exhaust passage 12 of the air conditioning system in the room is high, from the supply passage 11 to the room The humidity of the supplied indoor air supply (SA) is greatly increased. This phenomenon is related to a decrease in the dehumidifying ability of the dehumidifying wheel 21 because the regenerating operation of the dehumidifying wheel 21 is not sufficient due to an increase in the humidity at the regeneration inlet side of the dehumidifying wheel 21 . In such an air conditioning system, when the humidity of the indoor return air (RA) is high, the dehumidifying ability of the dehumidifying wheel 21 decreases, thereby weakening the role that the dehumidifying wheel 21 performs. perform the function When the humidity of the indoor return air RA is high, the amount of cooling must be increased in order to improve the dehumidifying ability of the dehumidifying wheel 21, which has a side effect of excessively cooling the room.

4 is a heating coil upstream of the regeneration side of the total heat exchange rotor 22, the dehumidification rotor 21, the cooling coil 41, and the dehumidification rotor 21 according to Korean Patent Publication No. 10-0422674, which is reference technology 2; 51) is a structural diagram of the installed air conditioning system.

5 and 6 are graphs showing changes in temperature and humidity of air by the air conditioning system of FIG. 4 . 5 shows changes in air temperature and humidity when the indoor return air RA has a relative humidity of 50% and a temperature of 24 degrees Celsius, and FIG. 6 shows that the indoor return air RA has a relative humidity of 80% and a temperature It represents the change in temperature and humidity of air at 24 degrees Celsius.

Compared with the air conditioning system of Reference Technology 1, in the air conditioning system of Reference Technology 2 shown in FIGS. 4 to 6, the regeneration temperature was increased by installing a heating coil 51 upstream of the regeneration side of the dehumidification wheel 21. . The graphs of FIGS. 5 and 6 show changes in air temperature and humidity both when the regeneration temperature is set to 35 degrees Celsius by controlling the temperature of the heating coil 51 and when the regeneration temperature is set to 45 degrees Celsius.

However, in the air conditioning system according to Reference Technology 2, even if the heating coil 51 is installed upstream of the regeneration side of the dehumidification wheel 21, there is a limit in that the dehumidification ability does not increase. The reason why the dehumidification capacity is not increased even though the heating coil 51 is installed upstream of the regeneration side of the dehumidification wheel 21 is analyzed as follows.

- The enthalpy of the inlet air on the regeneration side of the dehumidification wheel increased.

- The enthalpy of the outlet air at the regeneration side of the dehumidification wheel increased, and the absolute humidity increased.

- The enthalpy of the inlet air of the total heat exchanger on the exhaust passage side increased, and the absolute humidity increased.

- The enthalpy of the outlet air of the total heat exchanger on the supply passage side increased, and the absolute humidity increased. As a result, the recovery amount of ventilation energy of the total heat exchanger decreased.

- The enthalpy of the outlet air of the cooling coil on the supply passage side (the inlet air of the dehumidification wheel of the dehumidification wheel) increased, and the absolute humidity increased.

- As the regeneration temperature rises, the dehumidifying ability of the dehumidifying wheel increases, but the absolute humidity at the inlet of the dehumidifying wheel rises, so there is little effect of reducing the absolute humidity at the outlet. An adverse effect occurs in that the enthalpy of the outlet air on the dehumidification side, ie, the supply air, rises.

- Since the temperature of the supply air increased, the need for additional cooling also occurred.

- In conclusion, according to the air conditioning system of Reference Technology 2 in this way, it can be evaluated that there is no effect of increasing the regeneration temperature in terms of dehumidification capacity.

-Reference technology 1; US Registered Special Publication No. US6,199388 (2001.03.13.) -Reference technology 2; Korean Patent Publication No. 10-0422674 (2004.03.02.)

Embodiments provide an air conditioning system with improved performance of dehumidifying and heating/cooling functions.

An air conditioning system according to an embodiment includes a housing having a supply passage for supplying external air to an air conditioning space and an exhaust passage for introducing indoor air in the air conditioning space to the outside, and is disposed in the housing, the supply passage and the exhaust A total heat exchanger that performs energy exchange with air flowing through each of the passages, traversing the supply passage and the exhaust passage, is disposed to rotate with respect to the housing, dehumidifies the air in one of the supply passage and the exhaust passage, and dehumidifies the air in the other of the supply passage and the exhaust passage A dehumidification rotor that is regenerated by discharging moisture to one air, and a first heat exchanger disposed between the total heat exchanger and the dehumidification rotor in the supply passage, heat exchange with the air that has passed through the total heat exchanger, and then transfer the air to the dehumidification rotor and a second heat exchanger disposed on the upstream side of the dehumidification rotor in the exhaust passage to exchange heat with air and then transfer the air to the dehumidification rotor, wherein the housing transfers the indoor air of the air conditioning space from the exhaust passage to the upstream side of the total heat exchanger. It further includes an inlet for introducing, a transfer passage for transferring air that has passed through the total heat exchanger in the exhaust passage to an upstream side of the second heat exchange unit, and an outlet for discharging the air that has passed through the dehumidification rotor in the exhaust passage to the outside.

The total heat exchanger may be a total heat exchange rotor traversing the supply passage and the exhaust passage and arranged to rotate relative to the housing.

The supply passage and the discharge passage of the housing may extend in a straight line parallel to each other, and the housing extends along the extending direction of the supply passage and the discharge passage to divide the supply passage and the discharge passage, and a partition wall, and a discharge port and introduction from the discharge passage It may further include a blocking wall to block between the spheres.

The dehumidification rotor and the total heat exchanger may be disposed to be spaced apart from each other along a direction in which the supply passage and the exhaust passage extend.

The transfer passage may include a transfer pipe positioned outside the housing to connect a transfer outlet for discharging air passing through the total heat exchanger in the exhaust passage and a transfer inlet for transferring air from the discharge passage to the upstream side of the second heat exchanger. can

The housing may further include a horizontal bulkhead dividing the supply passage and the discharge passage, the rotational central axis of the total heat exchange rotor and the rotational central axis of the dehumidifying rotor may be spaced apart from each other, and the housing includes the supply passage and the exhaust passage. Vertical bulkheads extending in a direction transverse to the horizontal bulkhead and in a direction in which respective rotational central axes of the total heat exchange rotor and the dehumidification rotor extend to isolate the total heat exchange rotor and the dehumidification rotor may be further included.

The transmission passage may be formed through the vertical bulkhead to connect the space downstream of the total heat exchange rotor of the exhaust passage to the space upstream of the dehumidification rotor of the exhaust passage.

It may further include a second transfer passage formed through the vertical bulkhead to connect the space downstream of the total heat exchange rotor of the supply passage to the space upstream of the first heat exchange part of the supply passage.

The first heat exchanger can cool the air that has passed through the total heat exchanger and deliver it to the dehumidification rotor, and the second heat exchanger can heat the air and deliver it to the dehumidification rotor, located on the downstream side of the total heat exchanger and the first heat exchanger in the supply passage A portion of the dehumidification rotor may dehumidify the air, and the other portion of the dehumidification rotor positioned in the discharge passage may be regenerated by applying moisture to the air.

It may be located on the downstream side of the dehumidification rotor in the supply passage, and may further include a third heat exchanger for cooling the air dehumidified by the dehumidification rotor and supplying it to the air conditioning space.

The first heat exchange unit can heat the air that has passed through the total heat exchanger and transfer it to the dehumidification rotor, and the second heat exchange unit can stop the heat exchange operation with the air and transfer the air transferred from the transfer passage to the dehumidification rotor as it is, and in the supply passage A portion of the dehumidification rotor located on the downstream side of the total heat exchanger and the first heat exchanger may be regenerated by applying moisture to the air, and the other portion of the dehumidification rotor located in the exhaust passage may dehumidify the air.

In the air conditioning system according to the above-described embodiments, since the dehumidifying ability of the dehumidifying rotor is increased, improved dehumidification and heating/cooling functions may be implemented.

1 is a structural diagram of an air conditioning system according to Reference Technology 1. Referring to FIG.
2 and 3 are graphs showing changes in temperature and humidity of air by the air conditioning system of FIG. 1 .
4 is a structural diagram of an air conditioning system according to Reference Technology 2;
5 and 6 are graphs showing changes in temperature and humidity of air by the air conditioning system of FIG. 4 .
7 is a conceptual diagram schematically illustrating a connection relationship between components of an air conditioning system according to an embodiment.
8 and 9 are graphs illustrating changes in air temperature and humidity when the air conditioning system shown in FIG. 7 operates in different environments.
10 is a graph showing the relationship between the dehumidification amount ratio and the regeneration temperature according to changes in the temperature and humidity of the air shown in FIGS. 8 and 9 .
11 is a conceptual diagram schematically illustrating a connection relationship between components of an air conditioning system according to another embodiment.
12 is a graph showing changes in temperature and humidity of air by the air conditioning system shown in FIG. 11 .
13 is a conceptual diagram schematically illustrating a connection relationship between components of an air conditioning system according to another embodiment.
14 is a graph showing changes in temperature and humidity of air by the air conditioning system shown in FIG. 13 .
15 is a perspective view schematically illustrating the structure of an air conditioning system according to another embodiment.
16 is a perspective view illustrating an operating state of the air conditioning system shown in FIG. 15 .
17 is a perspective view illustrating an operating state of the air conditioning system shown in FIG. 15 from another angle.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. On the other hand, the terms used herein are for the purpose of describing the embodiments and are not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded. Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

7 is a conceptual diagram schematically illustrating a connection relationship between components of an air conditioning system according to an embodiment.

The air conditioning system according to the embodiment shown in FIG. 7 includes a housing 10 including a supply passage 11, an exhaust passage 12, and a transmission passage 12m through which air can pass, and rotates in the housing 10. The total heat exchange rotor 22 and the dehumidification rotor 21 arranged so as to be possible, the first heat exchange part 41 for performing heat exchange with air at the upstream side of the dehumidification rotor 21 of the supply passage 11, and the discharge passage In the upstream side of the dehumidification rotor 21 of (12), it includes a second heat exchange unit 51 for performing heat exchange with air.

The housing 10 is hollow inside and is manufactured to have a rectangular or circular cross-sectional shape. Inside the housing 10, the supply passage 11 and the exhaust passage 12, which are passages through which air can pass, are formed to extend along a straight line so as to be substantially parallel to each other.

The housing 10 includes a partition wall 19 extending across the inner side of the housing 10 in a horizontal direction in FIG. 7 . The partition wall 19 divides the discharge passage 12 and the supply passage 11 . In addition, the housing 10 includes a blocking wall 18 that blocks between the outlet 12b and the inlet 12a in the discharge passage 12 . The blocking wall 18 separates the space on the downstream side of the dehumidification rotor 21 where the outlet 12b is located and the space on the upstream side of the total heat exchange rotor 22 where the inlet 12a is located in the discharge passage 12. functions to isolate each other.

The supply passage 11 of the housing 10 has an external air inlet 11i for introducing external air (indicated as 'outdoor air', OA; outdoor air in the drawing) into the interior of the housing 10, and an inlet ( and an indoor supply port 11e for supplying the treated air (indicated as 'indoor supply air', SA; supply air in the drawing) to the indoor, which is the air conditioning space, after treating the external air introduced through 11i). Therefore, the supply passage 11 of the housing 10 performs a function of introducing external air and supplying it to the air conditioning space.

The exhaust passage 12 of the housing 10 is an inlet 12a for introducing indoor air (referred to as 'indoor return', RA; return air in the drawing) into the interior of the housing 10, which is an air conditioning space. and an outlet 12b for discharging the treated air (referred to as 'outdoor exhaust', EA; exhaust air in the drawing) to the outside after treating the indoor air introduced through the inlet 12a. Therefore, the discharge passage 12 of the housing 10 performs a function of introducing the indoor air of the air conditioning space and discharging it to the outside.

The exhaust passage 12 of the housing 10 is connected to the inlet 12a and passes through the exhaust upstream chamber 12u for supplying indoor air to the upstream side of the total heat exchange rotor 22, and the total heat exchange rotor 22. The first transfer chamber 12g on the downstream side of the total heat exchange rotor 22 through which air flows, the transfer outlet 12e for discharging the air of the first transfer chamber 12g, and the second heat exchange unit 51 It includes a delivery inlet 12i for supplying air to the second delivery chamber 12f located on the upstream side, and a delivery passage 12m for transferring air by connecting the delivery outlet 12e and the delivery inlet 12i. .

The delivery passage 12m is located on the outside of the housing 10 and may be implemented by a delivery pipe, a duct, or the like, connecting the delivery outlet 12e and the delivery inlet 12i. The transfer passage 12m performs a function of transferring the air passing through the total heat exchange rotor 22 in the exhaust passage 12 to the upstream side of the second heat exchange unit 51 .

The total heat exchange rotor 22 includes a honeycomb (honeycomb shape) through which air passes, or micropores (pores) having a circular or other polygonal shape. The total heat exchange rotor 22 may include a material capable of exchanging heat and moisture with air while passing air, for example, a material coated with a dehumidifying material such as silica gel on a metal material such as aluminum, copper, iron, etc. .

In a state where a part of the total heat exchange rotor 22 is located in the exhaust passage 12 and the other part of the total heat exchange rotor 22 is located in the supply passage 11, the total heat exchange rotor 22 is a driving device such as a motor, for example. It is possible to make a continuous rotational movement about the rotation shaft 32 by the. Therefore, the total heat exchange rotor 22 can rotate with respect to the housing 10 in a direction crossing the supply passage 11 and the exhaust passage 12 .

In a state where the temperature and humidity of the air flowing through each of the exhaust passage 12 and the supply passage 11 are different from each other, the air in the exhaust passage 12 and the air in the supply passage 11 exchange energy with the total heat exchange rotor 22 Therefore, an energy exchange (heat and moisture exchange) action is performed through the total heat exchange rotor 22 between the opposite flows of air flowing through each of the discharge passage 12 and the supply passage 11 . The total heat exchange rotor 22 may be referred to as an enthalpy wheel.

The total heat exchange rotor 22 is an example of a total heat exchanger, and embodiments are not limited by the configuration of the total heat exchange rotor 22 . The total heat exchanger may be fixedly disposed on each of the discharge passage 12 and the supply passage 11 so as not to rotate like a plate heat exchanger to perform energy exchange.

The dehumidifying rotor 21 includes, for example, a honeycomb (honeycomb)-shaped porous structure made of ceramic paper, and a desiccant is stably coated on the surface of the ceramic paper. The dehumidifying rotor 21 may be manufactured using, for example, silica gel or a porous polymer dehumidifying material made of a polymer material. Polymer dehumidifying material has more than four times the moisture absorption performance compared to silica gel, can reduce the weight of the dehumidifying rotor 21 to a quarter of the level, and has antibacterial/anti-fungal properties. It is a material suitable for the implementation of (21).

A part of the dehumidifying rotor 21 (the dehumidifying part) performs an action of dehumidifying the air by adsorbing water vapor in the air through the dehumidifying agent.

Since the desiccant of the dehumidifying rotor 21 cannot adsorb water vapor in the air indefinitely, it is necessary to periodically vaporize the moisture adsorbed to the desiccant so that the dehumidifier can adsorb water vapor again. Therefore, the other part (regeneration part) of the dehumidifying rotor 21 serves to discharge the moisture adsorbed by the dehumidifying agent to the air. The action of vaporizing the moisture adsorbed to the desiccant in this way is expressed as a 'regeneration action' of the dehumidifying rotor 21, and preferably by blowing high-temperature air to the dehumidifying rotor 21, the moisture adsorbed to the desiccant is vaporized, that is, The dehumidification rotor 21 can be regenerated.

As the dehumidification rotor 21 rotates around the partition wall 19 , a portion of the dehumidification rotor 21 positioned in the supply passage 11 acts as a dehumidifying unit. Accordingly, the dehumidification rotor 21 dehumidifies the air by adsorbing water vapor in the air passing through the dehumidification rotor 21 in the supply passage 11 . The other part of the dehumidification rotor 21 located in the discharge passage 12 acts as a regeneration unit. Therefore, the dehumidification rotor 21 is regenerated by applying moisture to the air passing through the dehumidification rotor 21 in the discharge passage 12 .

The dehumidifying rotor 21 shown in FIG. 7 may simultaneously perform the dehumidifying function and the regenerating function, rather than separately temporally. Assuming that the position of the dehumidification rotor 21 shown in FIG. 7 does not change with time, a part of the dehumidification rotor 21 located in the supply passage 11 performs a dehumidifying action on air, and the discharge passage 12 ) in the other part of the dehumidifying rotor 21, the regeneration action of the air is made.

In the embodiments, since the dehumidification rotor 21 rotates about the rotation shaft 31 , a part of the dehumidification rotor 21 located in the supply passage 11 is discharged through the rotation of the dehumidification rotor 21 . and the other part of the dehumidification rotor 21 positioned in the discharge passage 12 may move toward the supply passage 11 by the rotation of the dehumidification rotor 21 . That is, the dehumidification rotor 21 may rotate with respect to the housing 10 in a direction crossing the supply passage 11 and the discharge passage 12 . Since the operation of the dehumidification rotor 21 is continuously maintained, the dehumidification rotor 21 may simultaneously and continuously perform dehumidification and regeneration functions in time.

The dehumidification rotor 21 rotates at a predetermined rotation speed so that the moisture absorption action (dehumidification action) and the moisture discharge action (regeneration action) can be automatically performed.

The total heat exchange rotor 22 and the dehumidification rotor 21 are disposed to be spaced apart from each other along the direction in which the supply passage 11 and the exhaust passage 12 extend. In FIG. 7, the installation positions of the total heat exchange rotor 22 and the dehumidification rotor 21 are spaced apart from each other on the left and right sides of the drawing.

A first heat exchange unit 41 is disposed in the supply intermediate chamber 11d between the total heat exchange rotor 22 and the dehumidification rotor 21 in the supply passage 11 . The first heat exchange unit 41 performs heat exchange with air at the upstream side of the dehumidification rotor 21 of the supply passage 11 , and then serves to transfer the air to the dehumidification rotor 21 .

The air transferred from the first heat exchanger 41 to the dehumidification rotor 21 flows from the supply passage 11 into the supply downstream chamber 11w on the downstream side of the dehumidification rotor 21 and then passes through the indoor supply port 11e. It is supplied as indoor air supply (SA) to the indoor, which is an air-conditioning space. A blower 34 is disposed in the supply downstream chamber 11w for generating a flow of forced circulation of air in the supply passage 11 .

The first heat exchange unit 41 may be an air cooler that cools the air that has passed through the total heat exchange rotor 22 . An air cooler is an element that performs an air cooling function that lowers the temperature of the air while passing it through it. The air cooler may include, for example, a heat exchange tube or a cooling coil in which a refrigerant having a lower temperature than air flows therein, or a Peltier element that generates cooling heat by electricity.

When the first heat exchange unit 41 includes a heat exchange tube, a low temperature heat medium in a heated state or a cold heat medium in a cooled state may be used as the heat transfer medium supplied to the heat exchange tube. The low-temperature heat medium may use, for example, low-temperature hot water discharged from a power plant, hot water heated by geothermal or solar heat, and a condenser arrangement of a heat pump. In addition, for the cooling medium that can be supplied to the first heat exchange unit 41, for example, the cooling heat of the heat pump evaporator can be used.

The second heat exchange unit 51 performs heat exchange with air at the upstream side of the dehumidification rotor 21 of the discharge passage 12 , and then serves to transfer the air to the dehumidification rotor 21 . The second heat exchanger 51 may be an air heater that performs an air heating function of increasing the temperature of the air while passing the air. The air heater may include, for example, a heat exchange tube or a heating coil in which a heating medium having a higher temperature than air flows therein, an electrical resistance element generating heat by electricity, and a condenser arrangement of a heat pump.

8 and 9 are graphs illustrating changes in temperature and humidity of air when the air conditioning system shown in FIG. 7 operates in different environments.

According to the air conditioning system according to the embodiment shown in FIG. 7 , the outside air OA is introduced into the supply passage 11 through the outside air inlet 11i and the filter 11f. The air introduced into the supply passage 11 passes through the total heat exchange rotor 22 in the supply upstream chamber 11u, is cooled, and then transferred to the supply intermediate chamber 11d. While the air passes through the total heat exchange rotor 22, the outside air OA shown in FIG. 8 is cooled along the line indicated by 'total heat exchanger' and the temperature and humidity decrease.

The air in the supply intermediate chamber 11d again passes through the first heat exchange unit 41 and is further cooled. Referring to the line indicated by 'cold water coil' in FIG. 8 , the air is further cooled by the first heat exchange unit 41, so that the temperature and humidity of the air are further reduced.

The air cooled while passing through the first heat exchange unit 41 passes through the dehumidifying unit of the dehumidifying rotor 21 and undergoes a dehumidifying action. When air passes through the dehumidifying unit of the dehumidifying rotor 21, the dehumidifying action is performed through an adiabatic process, so that the humidity of the air is further reduced, and the temperature increases to approximately 22 degrees Celsius and is supplied to the room (indoor air supply, SA).

The room air RA introduced from the exhaust passage 12 through the inlet 12a into the exhaust upstream chamber 12u, which is on the upstream side of the total heat exchange rotor 22, is approximately 24 degrees Celsius, with reference to FIG. It has a relative humidity of 50%. The indoor air (RA) passes through the total heat exchange rotor 22 to increase the temperature and humidity. The air that has passed through the total heat exchange rotor 22 and flowed into the first transfer chamber 12g passes through the transfer passage 12m in the discharge passage 12 to the second transfer chamber 12f, which is an upstream side of the second heat exchange unit 51. is supplied with

As the air in the second transfer chamber 12f passes through the second heat exchange unit 51 and is heated, the temperature increases to approximately 45 degrees Celsius. The air heated by the second heat exchange unit 51 passes through the regeneration unit of the dehumidification rotor 21 and undergoes a humidification action through an adiabatic process, so that the humidity of the air increases and the temperature decreases. The air passing through the regeneration unit of the dehumidification rotor 21 is exhausted from the discharge downstream chamber 12d to the outside through the discharge port 12b. A blower 35 is disposed in the discharge downstream chamber 12d for generating a forced circulation action of air in the discharge passage 12 .

In Reference Technology 1 and Reference Technology 2, since the flow of indoor return air sucked from the room to the air conditioning system passes through the regeneration side of the dehumidification rotor and then through the total heat exchanger, the humidity of the indoor return air (RA) is When it is high, there is a problem in that the humidity of the indoor air supply (SA) supplied to the room by the supply passage is greatly increased.

However, in the air conditioning system according to the above-described embodiment, the flow of indoor air sucked from the room to the exhaust passage 12 first passes through the total heat exchange rotor 22, and then passes through the transmission passage 12m to the second heat exchange unit ( 51), after being heated, it passes through the regeneration unit of the dehumidification rotor 21 and is discharged to the outside.

Due to the improvement of the air flow in the discharge passage 12, the condition of the air after passing through the total heat exchange rotor 22 in the supply passage 11 is constant without being affected by the regeneration temperature of the dehumidification rotor 21. can be kept This means that the ventilation energy recovery amount of the total heat exchange rotor 22 is kept constant regardless of the regeneration temperature of the dehumidification rotor 21 .

As a result of this action, the state of the air that has passed through the first heat exchange unit 41 in the supply passage 11 and the air that has passed through the dehumidification unit of the dehumidifying rotor 21 and supplied to the room does not change significantly but is generally constant. can be maintained

The indoor return air RA shown in FIG. 9 has the same temperature as the indoor return air RA shown in FIG. 8, but has a state in which the relative humidity is increased to 80%. However, even when the relative humidity of the indoor return air RA is increased in this way, the temperature and humidity of the air passing through the first heat exchange unit 41 and the air passing through the dehumidification rotor 21 do not change significantly. It is possible to obtain an indoor air supply (SA) having an appropriate temperature and humidity condition to be supplied to the air conditioner.

In addition, even though the regeneration temperature for the regeneration unit of the dehumidification rotor 21 has risen, the enthalpy of the indoor supply air SA supplied from the supply passage 11 to the room is maintained almost constant regardless of this.

According to the air conditioning system according to the embodiment as described above, the regeneration temperature can be increased even when the humidity of the indoor return air RA recovered from the room is high due to the high indoor humidity, thereby increasing the dehumidification amount of the dehumidifying rotor 21 . can do it

In order to heat the indoor return air (RA) sucked into the exhaust passage 12 to a regeneration temperature (maximum of 50 degrees Celsius), the air can be heated by using the second heat exchange unit 51 . ), low-temperature waste heat can be used as a heat source for heating air. By utilizing the low-temperature waste heat, additional energy consumption is not generated to increase the regeneration temperature.

10 is a graph showing the relationship between the dehumidification amount ratio and the regeneration temperature according to changes in the temperature and humidity of the air shown in FIGS. 8 and 9 .

In FIG. 10 , the vertical axis represents the dehumidification amount ratio, and the vertical axis dehumidification ratio is the dehumidification amount by the air conditioning system according to the embodiment shown in FIG. 7 / the dehumidification amount by the reference techniques shown in FIGS. 1 to 6 .

Referring to FIG. 10 , when the indoor return air RA is in a state of 24 degrees Celsius and 50% relative humidity, if the regeneration temperature is set to 38 degrees Celsius or higher, an increased dehumidification amount can be implemented than that in reference technologies.

In addition, when the regeneration temperature was 50 °C, the dehumidification amount increased by 1.5 times, and when the humidity of the indoor return air (RA) was high, the increase in the amount of dehumidification was further increased. .

When waste heat is used as a regenerative heat source to raise the regeneration temperature of the dehumidifying part of the dehumidifying rotor 21 to a target temperature, since there is no change in energy consumption, an increase in the dehumidification amount means an increase in the dehumidification efficiency.

11 is a conceptual diagram schematically illustrating a connection relationship between components of an air conditioning system according to another embodiment.

The overall configuration of the air conditioning system according to the embodiment shown in FIG. 11 is similar to the air conditioning system according to the embodiment shown in FIG. 7 , and is located on the downstream side of the dehumidification rotor 21 in the discharge passage 12 to dehumidify A third heat exchanger 42 for cooling the air dehumidified by the rotor 21 and supplying it to the air conditioning space was additionally installed.

The third heat exchange unit 42 may be an air cooler that cools air similarly to the first heat exchange unit 41 . The air cooler may include, for example, a heat exchange tube or a cooling coil in which a refrigerant having a lower temperature than air flows therein, or a Peltier element that generates cooling heat by electricity.

The third heat exchanger 42 passes through the dehumidifying unit of the dehumidifying rotor 21 and performs a function of additionally cooling the dehumidified air. Accordingly, it is possible to further lower the temperature of the indoor air supply (SA) supplied to the indoor air-conditioning space.

12 is a graph showing changes in temperature and humidity of air by the air conditioning system shown in FIG. 11 . Referring to FIG. 12 , changes in temperature and humidity of air by the air conditioning system shown in FIG. 11 are shown when the indoor return air RA has a state of 24 degrees Celsius and 80% relative humidity.

Compared with the graph of FIG. 8, in FIG. 12, the air that has passed through the dehumidifying unit of the dehumidifying rotor 21 is additionally cooled by the third heat exchanger 42, so that the temperature of the indoor air supply SA is reduced to approximately 16 degrees Celsius. In this way, sufficiently low humidity and cold cooled air can be provided to the indoor air supply.

13 is a conceptual diagram schematically illustrating a connection relationship between components of an air conditioning system according to another embodiment.

The air conditioning system according to the embodiment shown in FIGS. 7 to 12 described above is implemented to execute a cooling/dehumidifying mode in which low-temperature dehumidified air with reduced humidity and temperature is supplied to an indoor, which is an air-conditioning space. The air conditioning system according to the embodiment is also implemented to execute a heating mode capable of supplying air heated to an appropriate temperature with an appropriate humidity to the indoor air supply (SA).

The overall configuration of the air conditioning system according to the embodiment shown in FIG. 13 is the same as that of the air conditioning system shown in FIG. 7 , but the first heat exchanger 41 is an air heater, and the second heat exchanger 51 is air It performs a function of supplying air to the dehumidifying rotor 21 by passing air as it is without performing a heat exchange action with it. In addition, a part of the dehumidification rotor 21 located in the supply passage 11 is a regeneration unit that is regenerated by applying moisture to the air, and the other part of the dehumidification rotor 21 located in the discharge passage 12 is used to absorb water vapor in the air. It is a dehumidifying unit that dehumidifies air by adsorption.

Therefore, in the air conditioning system according to the embodiment shown in FIG. 13 , only the operation modes of the first heat exchange unit 41 and the second heat exchange unit 51 are changed without adding or changing components to the air conditioning system shown in FIG. 7 . By operating it, it is possible to implement a heating mode suitable for the environment such as autumn or winter.

14 is a graph showing changes in temperature and humidity of air by the air conditioning system shown in FIG. 13 .

According to the air conditioning system according to the embodiment shown in FIG. 13 , the outside air OA is introduced into the supply passage 11 through the outside air inlet and the filter 11f. The air introduced into the supply passage 11 passes through the total heat exchange rotor 22 and is heated. While the air passes through the total heat exchange rotor 22, the outside air OA shown in FIG. 14 is heated from about -12 degrees Celsius to about 10 degrees Celsius.

The air that has passed through the total heat exchange rotor 22 in the supply passage 11 passes through the first heat exchange unit 41 and is further heated. Referring to FIG. 14 , the air is heated from 10 degrees Celsius to about 35 degrees Celsius by the first heat exchanger 41 .

In the supply passage 11, the heated air passing through the first heat exchange unit 41 passes through the regeneration unit of the dehumidification rotor 21 and undergoes humidification through an adiabatic process, so that the humidity in the air is reduced to an appropriate level for indoor air supply. increases and the temperature decreases slightly.

The indoor air RA introduced from the exhaust passage 12 through the inlet 12a into the exhaust upstream chamber 12u, which is on the upstream side of the total heat exchange rotor 22, is approximately 20 degrees Celsius when referring to FIG. 14 . has The indoor air RA is cooled while passing through the total heat exchange rotor 22 . The air cooled while passing through the total heat exchange rotor 22 is supplied to the upstream side of the second heat exchange unit 51 via the transfer inlet 12i of the discharge passage 12 through the transfer passage 12m.

Since the second heat exchange unit 51 is controlled in a state in which heat exchange with air is stopped, the second heat exchange unit 51 delivers the air to the dehumidifying rotor 21 as it is without changing the state of the air. The air supplied from the second heat exchange unit 51 to the dehumidifying unit of the dehumidifying rotor 21 passes through the dehumidifying unit of the dehumidifying rotor 21 and undergoes a dehumidifying action by an adiabatic process. Accordingly, while the air passes through the dehumidifying unit of the dehumidifying rotor 21 , the humidity decreases and the temperature increases. The air passing through the dehumidifying part of the dehumidifying rotor 21 is exhausted from the discharge downstream chamber 12d to the outside through the outlet 12b (EA).

15 is a perspective view schematically illustrating the structure of an air conditioning system according to another embodiment.

The air conditioning system according to the embodiment shown in FIG. 15 implements the same circuit as the air conditioning system according to the embodiment shown in FIG. 7 in terms of aerodynamics/thermodynamics.

In the air conditioning system according to the embodiment shown in FIG. 7 , the supply passage 11 and the exhaust passage 12 are substantially parallel to each other and have a linear arrangement structure extending in a straight direction.

The air conditioning system according to the embodiment shown in FIG. 15 also includes the supply passage 11 and the exhaust passage 12, but each of the supply passage 11 and the exhaust passage 12 is approximately the same shape as the letter 'U'. It has an arrangement structure that realizes the flow of air. Accordingly, the housing 10, the supply passage 11, the exhaust passage 12, the dehumidification rotor 21, and the total heat exchange rotor 22 of the air conditioning system shown in FIG. 15 have a three-dimensional structure by a three-dimensional arrangement as a whole. Therefore, it is possible to implement a compact design that is convenient to install in a narrow space.

The air conditioning system according to the embodiment shown in FIG. 15 includes a housing 10 including a supply passage 11, an exhaust passage 12, and a transmission passage 12m through which air can pass, and the housing 10. The total heat exchange rotor 22 and the dehumidification rotor 21 arranged to be rotatable, and the first heat exchange unit 41 performing heat exchange with air at the upstream side of the dehumidification rotor 21 of the supply passage 11, and discharge; and a second heat exchange unit 51 performing heat exchange with air at the upstream side of the dehumidification rotor 21 of the passage 12 .

The housing 10 includes a horizontal partition wall 13h having a planar shape (plate shape) therein to partition the supply passage 11 and the discharge passage 12 . Each of the total heat exchange rotor 22 and the dehumidification rotor 21 is arranged to rotate on the horizontal bulkhead 13h, but the rotational central axis X1 of the total heat exchange rotor 22 and the rotational central axis of the dehumidification rotor 21 ( X2) are arranged to be spaced apart from each other.

That is, in the air conditioning system according to the embodiment shown in FIG. 7, the respective rotational axes of the total heat exchange rotor 22 and the dehumidification rotor 21 approximately coincide with each other, but in FIG. 15, the total heat exchange rotor 22 The rotational central axis X1 and the rotational central axis X2 of the dehumidifying rotor 21 extend parallel to each other and are spaced apart (offset) from each other. 15, the total heat exchange rotor 22 and the dehumidification rotor 21 are positioned to be connected to each other along the direction transverse to the central axis of rotation (X1, X2), but the embodiment is such a total heat exchange rotor 22 and dehumidification It is not limited by the arrangement position of the rotor 21 . That is, the arrangement position of the total heat exchange rotor 22 in the direction along the central axis of rotation (X1) and the arrangement position of the dehumidification rotor (21) in the direction along the central axis of rotation (X2) may be different from each other.

The supply passage 11 is formed to form an approximately letter 'U' shape along one surface of the horizontal partition wall 13h and the lower surface of the horizontal partition wall 13h in FIG. 7 . In addition, the discharge passage 12 is formed to form an approximately letter 'U' shape along the other surface of the horizontal partition wall 13h and the upper surface of the horizontal partition wall 13h in FIG. 7 .

The housing 10 also has a direction transverse to the horizontal bulkhead 13h and a total heat exchange rotor to isolate the dehumidification rotor 21 and the total heat exchange rotor 22 in each of the supply passage 11 and the exhaust passage 12 22) and a vertical partition wall 13v extending along the direction in which the rotational central axes X1 and X2 of the dehumidifying rotor 21 extend.

The discharge passage 12 is divided into two by a vertical partition 13v on the upper surface of the horizontal partition 13h, and the partitioned part of the discharge passage 12 is a first discharge chamber for accommodating the total heat exchange rotor 22 ( 12g and 12u and the other partitioned portion of the discharge passage 12 are second discharge chambers 12f and 12d for accommodating the dehumidification rotor 21 .

The supply passage 11 is divided into two by a vertical partition 13v on the lower surface of the horizontal partition 13h, and the partitioned part of the supply passage 11 is a first supply chamber for accommodating the total heat exchange rotor 22 ( 11d and 11u (refer to FIG. 17) and the other partitioned portion of the supply passage 11 are the second supply chambers 11w and 11y for accommodating the dehumidification rotor 21 .

16 is a perspective view illustrating an operating state of the air conditioning system shown in FIG. 15 . Referring to FIG. 16 , the flow of air in the exhaust passage 12 in the air conditioning system implementing a compact three-dimensional flow path structure is illustrated.

The housing 10 has an inlet 12a for introducing the indoor return air RA from the exhaust passage 12 to the exhaust upstream chamber 12u on the upstream side of the total heat exchange rotor 22, and the exhaust passage 12. The first transfer chamber 12g, which is a space on the downstream side of the total heat exchange rotor 22 through which the air that has passed through the total heat exchange rotor 22 flows, is transferred from the discharge passage 12 to the space on the upstream side of the dehumidification rotor 21 and a transmission passage 12m formed through the vertical partition wall 13v to connect to the second transmission chamber 12f. A second heat exchange unit 51 is disposed on the upstream side of the dehumidification rotor 21 in the second transfer chamber 12f. Therefore, the air transferred through the transfer passage 12m first passes through the second heat exchange unit 51, undergoes an energy exchange action, and then passes through the dehumidification rotor 21.

The air that has passed through the dehumidification rotor 21 in the discharge passage 12 moves to the discharge downstream chamber 12d on the downstream side of the dehumidification rotor 21 and is then exhausted to the outside through the discharge port 12b (EA).

17 is a perspective view illustrating an operating state of the air conditioning system shown in FIG. 15 from another angle. Referring to FIG. 17 , the flow of air in the supply passage 11 in the air conditioning system implementing a compact three-dimensional flow path structure is illustrated.

The outside air OA is introduced into the supply passage 11 through the outside air inlet 11i. The air introduced into the supply passage 11 passes through the total heat exchange rotor 22 in the supply upstream chamber 11u and is then transferred to the supply intermediate chamber 11d, which is a space downstream of the total heat exchange rotor 22 .

In the supply passage 11 , the supply intermediate chamber 11d which is a space downstream of the total heat exchange rotor 22 and the supply transfer chamber 11y which is an upstream space of the first heat exchange unit 41 are connected to each other. The vertical bulkhead 13v is a second transfer passage passing through to connect the supply intermediate chamber 11d, which is a space downstream of the total heat exchange rotor 22, and the supply transfer chamber 11y, which is an upstream space of the first heat exchange unit 41 ( 11m).

The air in the intermediate supply chamber 11d passes through the second transfer passage 11m and is transferred to the supply transfer chamber 11y, which is an upstream space of the first heat exchange unit 41 . The air in the supply transfer chamber 11y passes through the first heat exchange unit 41 and undergoes an energy exchange action, then passes through the dehumidification rotor 21 to the supply downstream chamber 11w which is a space downstream of the dehumidification rotor 21 and It is discharged into the room, which is an air-conditioning space, through the indoor supply unit 22e.

In the air conditioning system according to the embodiment shown in FIG. 7 , a transmission path is implemented by connecting a separate transmission pipe to the outside of the housing 10 , but the air conditioning system according to the embodiment shown in FIGS. 15 to 17 is discharged. According to the structure of the passage 12, it is possible to implement a compact flow path arrangement structure by the transmission passage 12m formed through the vertical bulkhead 13v without installing a separate transmission pipe on the outside of the housing 10.

The description of the configurations and effects of the above-described embodiments is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the invention should be defined by the appended claims.

10: housing 12g: first transfer chamber
11e: indoor supply port 12f: second transfer chamber
11y: supply delivery chamber 12e: delivery outlet
11d: supply intermediate chamber 13v: vertical bulkhead
11: supply passage 13h: horizontal bulkhead
11w: supply downstream chamber 18: barrier wall
11i: inlet 19: bulkhead
11u: supply upstream chamber 21: dehumidification rotor
11m: second transfer passage 22: total heat exchange rotor
11f: filter 22e: indoor supply
12a: inlet 31, 32: rotation shaft
12b: outlet 34, 35: blower
12u: discharge upstream chamber 41: first heat exchange unit
12: exhaust passage 42: third heat exchange unit
12d: discharge downstream chamber 51: second heat exchange unit
12i: transfer inlet X1, X2: axis of rotation
12m: transmission passage

Claims (11)

a supply passage for introducing outside air to the air conditioning space and supplying it to the air conditioning space, and a discharge passage for introducing indoor air of the air conditioning space and discharging it to the outside; a housing disposed so that the direction of the flow and the direction of the flow of air flowing through the discharge passage are opposite to each other;
a total heat exchanger disposed in the housing and performing energy exchange with air flowing through each of the supply passage and the exhaust passage;
It crosses the supply passage and the exhaust passage and is disposed to rotate with respect to the housing, dehumidifies the air of one of the supply passage and the exhaust passage, and discharges moisture into the air of the other of the supply passage and the exhaust passage. regenerated dehumidification rotor;
a first heat exchange unit disposed between the total heat exchanger and the dehumidification rotor in the supply passage, performing heat exchange with the air that has passed through the total heat exchanger, and then transferring the air to the dehumidification rotor; and
a second heat exchange unit disposed on the upstream side of the dehumidification rotor in the discharge passage to conduct heat exchange with air and then transfer the air to the dehumidification rotor; and
The housing further includes an inlet for introducing the indoor air of the air conditioning space from the exhaust passage to an upstream side of the total heat exchanger, and an outlet for discharging the air that has passed through the dehumidification rotor in the exhaust passage to the outside;
Further comprising a transmission passage for transmitting the air that has passed through the total heat exchanger in the exhaust passage to an upstream side of the second heat exchanger, including a transmission pipe located outside the housing,
wherein the total heat exchanger is a total heat exchange rotor traversing the supply passage and the exhaust passage and arranged to rotate with respect to the housing. delete According to claim 1,
The supply passage and the discharge passage of the housing extend in a straight line parallel to each other, and the housing extends along an extension direction of the supply passage and the discharge passage to partition the supply passage and the discharge passage; The air conditioning system further comprising a blocking wall blocking between the outlet and the inlet in the outlet passage. 4. The method of claim 3,
The dehumidification rotor and the total heat exchanger are disposed to be spaced apart from each other along a direction in which the supply passage and the exhaust passage extend. 5. The method of claim 4,
The transfer pipe of the transfer passage connects a transfer outlet for discharging the air passing through the total heat exchanger in the exhaust passage and a transfer inlet for transferring air from the discharge passage to an upstream side of the second heat exchanger. Air conditioning system. a housing having a supply passage for introducing and supplying external air to the air conditioning space, and a discharge passage for introducing and discharging indoor air of the air conditioning space to the outside;
a total heat exchanger disposed in the housing and performing energy exchange with air flowing through each of the supply passage and the exhaust passage;
It crosses the supply passage and the exhaust passage and is disposed to rotate with respect to the housing, dehumidifies the air of one of the supply passage and the exhaust passage, and discharges moisture into the air of the other of the supply passage and the exhaust passage. regenerated dehumidification rotor;
a first heat exchange unit disposed between the total heat exchanger and the dehumidification rotor in the supply passage, performing heat exchange with the air that has passed through the total heat exchanger, and then transferring the air to the dehumidification rotor; and
a second heat exchange unit disposed on the upstream side of the dehumidification rotor in the discharge passage to conduct heat exchange with air and then transfer the air to the dehumidification rotor; and
The housing includes an inlet for introducing the indoor air of the air conditioning space from the exhaust passage to an upstream side of the total heat exchanger; , further comprising a discharge port for discharging the air that has passed through the dehumidification rotor in the discharge passage to the outside,
The total heat exchanger is a total heat exchange rotor that crosses the supply passage and the exhaust passage and is disposed to rotate with respect to the housing,
The housing further includes a horizontal partition wall dividing the supply passage and the exhaust passage, the rotational axis of the total heat exchange rotor and the rotational axis of the dehumidification rotor are spaced apart from each other, and the housing comprises the supply passage and the Vertical bulkheads extending in a direction transverse to the horizontal bulkhead and in a direction in which respective rotational axes of the total heat exchange rotor and the dehumidification rotor extend in each of the exhaust passages to isolate the total heat exchange rotor and the dehumidification rotor Further comprising, an air conditioning system. 7. The method of claim 6,
The transmission passage is formed through the vertical bulkhead to connect a space downstream of the total heat exchange rotor of the exhaust passage to a space upstream of the dehumidification rotor of the exhaust passage. 7. The method of claim 6,
The air conditioning system further comprising a second transfer passage formed through the vertical bulkhead to connect a space downstream of the total heat exchange rotor of the supply passage to a space upstream of the first heat exchange portion of the supply passage. 9. The method of any one of claims 1 or 3 to 8,
The first heat exchange unit cools the air that has passed through the total heat exchanger and transfers it to the dehumidification rotor, the second heat exchange unit heats the air and transfers it to the dehumidification rotor, and the total heat exchanger and the first heat exchange in the supply passage A portion of the dehumidification rotor located on the downstream side of the unit dehumidifies the air, and the other portion of the dehumidification rotor located in the discharge passage is regenerated by applying moisture to the air. 10. The method of claim 9,
The air conditioning system further comprising a third heat exchanger located on the downstream side of the dehumidification rotor in the supply passage, for cooling the air dehumidified by the dehumidification rotor and supplying it to the air conditioning space. 9. The method of any one of claims 1 or 3 to 8,
The first heat exchange unit heats the air that has passed through the total heat exchanger and transfers it to the dehumidification rotor, and the second heat exchange unit stops the heat exchange operation with the air and transfers the air transferred from the transfer passage to the dehumidification rotor as it is, , a portion of the dehumidification rotor located on the downstream side of the total heat exchanger and the first heat exchanger in the supply passage is regenerated by applying moisture to the air, and the other portion of the dehumidification rotor located in the exhaust passage dehumidifies the air , air conditioning system.

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