WO2011132999A2

WO2011132999A2 - Heat exchange device of ventilation device for windows and heat exchange module having the same

Info

Publication number: WO2011132999A2
Application number: PCT/KR2011/002968
Authority: WO
Inventors: Myoungseok Oh; Taehwoan Choi; Jockhyun Hwang; Jeongdeuk Yoon
Original assignee: Lg Hausys, Ltd.
Priority date: 2010-04-23
Filing date: 2011-04-22
Publication date: 2011-10-27
Also published as: WO2011132999A3; RU2012149913A; RU2531736C2; CN102906508B; KR20110118361A; KR101338547B1; CN102906508A; JP2013525734A

Abstract

Disclosed is a heat exchange device of a ventilation device for windows, in which a plurality of heat exchange plates are stacked so as to form a plurality of hollow portions among the heat exchange plates, wherein the heat exchange plate is formed with a center portion made of a material which can perform total heat exchange, and an outer frame formed to enclose the center portion and made of a material which can perform sensible heat exchange. Therefore, the heat exchange device improves the heat exchanging efficiency and the load structure.

Description

HEAT EXCHANGE DEVICE OF VENTILATION DEVICE FOR WINDOWS AND HEAT EXCHANGE MODULE HAVING THE SAME

The present invention relates to heat exchange device of a ventialtion device for windows, and particularly to a exchange device of ventialtion device for windows, which is installed in a window frame so as to discharge indoor air to an outdoor space and introduce outdoor air into an indoor space and to exchange heat between the indoor air and the outdoor air, and also which uses complexly an element for performing total heat exchange and an element for performing sensible heat exchange, thereby being capable of carrying out all of the total heat exchange and the sensible heat exchange.

Generally, a carbon dioxide content in indoor air is gradually increased due to breathing of living things, as time passes. And since the increased carbon dioxide content inhibits the breathing of living things, it is necessary to frequently replace the indoor air with fresh air.

Typically, indoor air is forcibly discharged to an outdorr space by a ventilation device such as an air blower, and outdoor air is naturally introduced through an opened window into an indoor space. However, if the indoor air is relaced in such way, it is impossible to achieve total heat exchange between the indoor air and the outdoor air. Thus, there are some problems in that unnecessary expense for air conditioning and heating of the indoor space is required and also persons in the building may have an unpleasant feeling due to a rapid change in temperature. Herein, the total heat exchange includes sensible heat exchange meaning temperateure exchaging, and latent heat exchange meaning humidity exchange.

In general, a heat exchange device is provided with a heat exchange member in which a flow of high temperature fluid and a flow of low temperature fluid are intersected with each other so as to obtain desired temperature fluid. The heat exchange device may be formed into various shapes, but a plate type heat exchange device, in which a plurality of thin plates having a predetermined surface area are stcked so as to increase a heat exchange surface area, is mainly used.

A heat exchange plate of the conventional plate type heat exchange device is generally made of aluminum or ordinary paper. In case of the heat exchange plate made of aluminum, a body frame for stably and firmly stacking the metallic heat exchange plates has a complicated structure, resulting in high manufacturing cost. Further, heat is exchanged, but humidity is not exchanged

In case of the heat exchange plate made of paper, the manufacturing cost is reduced, compared with in case of using aluminum. Further, since paper can transmit humidity, it is possible to exchange both of heat and humidity. However, since the heat exchange plate made of papper has a low strength, it can be easily damaged by small force, and thus it should be replaced frequently.

An object of the present invention is to provide a heat exchange device used in a heat exchange module of a ventilation device for windows, which can perform the heat exchange between air discharged from an indoor space to an outdoor space and air introduced from the outdoor space into the indoor space, and at the same time, takes each advantage of the lauminum heat exchange plate and the paper heat exchaneg plate, i.e., an excellent strength and a heat/humidity exchange function, and also which can be facilely manufactured with low manufacturing cost.

Another object of the present invention is to provide a ventialtion device for windows and a heat exchange module including the heat exchange device.

To achieve the object of the present invention, the present invention provides a heat exchange device of a ventilation device for windows, in which a plurality of heat exchange plates are stacked so as to form a plurality of hollow portions among the heat exchange plates, wherein the heat exchange plate is formed with a center portion made of a material which can perform total heat exchange, and an outer frame formed to enclose the center portion and made of a material which can perform sensible heat exchange.

Preferably, the material which can perform total heat exchange is paper, and the material which can perform sensible heat exchange is a metallic material, more preferably, aluminum.

Preferably, the heat exchange device may be formed into a net shape or a honeycomb shape.

Further, the present invention provides a heat exchange module of a ventilation device for windows, which is installed at a window frame of a divided window so as to perform heat exchange between indoor air and outdoor air without mixture therebetween, including a case which is supported by the window frame; an outdoor air fan which is provided in the case so as to introduce the outdoor air from the window frame into the case and also to discharge the outdoor air of the case to an outside of the case; an indoor air fan which is provided in the case so as to introduce the indoor air to be discharged from the window frame to an outdoor space into the case and also to discharge the indoor air of the case to the window frame; and a heat exchange device in which a plurality of heat exchange plates are stacked so as to form a plurality of hollow portions among the heat exchange plates, and the heat exchange plate is formed with a center portion made of a material which can perform total heat exchange and an outer frame formed to enclose the center portion and made of a material which can perform sensible heat exchange.

Preferably, the case is provided with an outdoor air introduction duct and an indoor air discharge duct, and the outdoor air introduction duct and indoor air discharge duct are inserted into the window frame.

Preferably, the case is formed with an indoor air introduction hole for introducing the indoor air into the case, and the indoor air introduction hole is formed at a lower surface of the case.

Preferably, the heat exchange module further includes an outdoor air filter which is provided in the case so as to purify the outdoor air introduced into the case, wherein the outdoor air filter is disposed to purify the outdoor air before the outdoor air is passed through the heat exchange device. Herein, at the lower surface of the case, there is provided a door which is opened/closed or removable so as to facilely replace the outdoor air filter.

Preferably, the heat exchange module further includes an indoor air filter which is provided in the case so as to purify the indoor air introduced into the case, wherein the indoor air filter is disposed to purify the indoor air before the outdoor air is passed through the heat exchange device. Herein, at the lower surface of the case, there is provided a door which is opened/closed or removable so as to facilely replace the indoor air filter.

Preferably, the heat exchange device includes a first heat exchange device which primarily performs the heat exchange between the indoor air and the outdoor air; and a second heat exchange device which secondarily performs the heat exchange between the indoor air and outdoor air passed through the first heat exchange device. Herein, at the lower surface of the case, there is provided a door which is opened/closed or removable so as to facilely replace the total heat exchange device.

Preferably, the heat exchange module further includes a guide wing which is provided in the case so as to guide the outdoor air and the indoor air, wherein the guide wing is disposed at at least one of a place between the outdoor air filter and the first heat exchange device and a place between the first heat exchange device and the second heat exchange device. Herein, the guide wing is formed into a circular arc shape which is protruded toward the side surface of the case.

Preferably, the heat exchange module further includes a cover which is removably coupled to the window frame so as to enclose the case, wherein the cover has a noise absorbing function and a shock absorbing function.

Preferably, the cover includes an upper and lower cover which is disposed at upper and side portions of the case and of which one end is formed with a hook coupled with the window frame; a side cover which is disposed at a side portion of the case and of which one end is formed with a hook coupled with the window frame; and a lower cover of which one end is contacted with the side cover and the other end is formed with a hook coupled with the upper and side cover. Herein, a shock absorbing member having a noise and shock absorbing function is disposed at an inner surface of the upper and side cover.

Preferably, the heat exchange module further includes a fan cover for covering the outdoor air fan and the indoor air fan, wherein the fan cover is formed with a separation wall for preventing the outdoor air and the indoor air passed through the heat exchange device from being mixed with each other.

According to the present invention, the total heat exchange including heat and humidity exchange is achieved by the paper disposed at the center portion of the total heat/sensible heat exchange device, and the sensible heat exchange efficiency of the total heat exchange device is improved by using the aluminum frame. Further, the total heat/sensible heat exchange device can be facilely manufactured with low cost and also has the excellent heat/humidity exchange efficiency and the high strength.

The above and other objects, fretures and advantages of the present invention will becom apparaent from the following description of preferred embodiments given in conjunction with the accompany drawings, in which:

Fig. 1 is a partial perspective view of a divided window in which a ventilation device for sindows and doors is installed according to the present invention.

Fig. 2 is an exploded perspective view of the ventilation device of Fig. 1.

Fig. 3 is a perspective view of a heat exchange unit of a heat exchange module according to the present invention, wherein a lower surface of the heat exchange unit is removed.

Fig. 4 is a view of a heat exchange device used in the heat exchange module according to the present invention.

Fig. 5 is a view showing a fan cover of the heat exchange unit of Fig. 3.

Fig. 6 is a perspective view as seen from a lower side after the heat exchange unit of Fig. 3 is cut laterally.

Figs. 7 and 8 are partial cross-sectional views shwoing modified examples of the heat exchange unit of Fig. 6.

Fig. 9 is a partial longitudinal cross-sectional view showing a state that the heat exchange module is installed in left and right transoms according to the present invention.

Fig. 10 is a perspective view of a duct, a damper and a hood provided at the left and right transoms of Fig. 9.

Fig. 11 is an exploded perspective view of an exhuast module of the ventilation device of Fig. 1, as seen from a lower side thereof.

Fig. 12 is a partial perspective view of the exhuast module of the ventilation device of Fig. 1, as projected from an upper side thereof.

Fig. 13 a partial longitudinal cross-sectional view showing showing a state that the exhuast module of the ventilation device of Fig. 1 is disposed in a center transom.

Fig. 14 is a partial perspective view of the exhaust module of of the ventilation device of Fig. 1.

Fig. 15 is a front veiw of the divided window as seen from an indoor space.

[Detailed Description of Main Elements]

110: left and right transom 112: duct

114: flange 116: bolt hole

118: bolt 120: girder

122: shock absorbing member 124: damper

126: hood 128: net

140: center transom 150: mullion

200: heat exchange module 210: heat exchange unit

212: case 214: outdoor air introduction duct

216: indoor air introduction hole 218: indoor air discharge duct

220: outdoor air discharge duct 222: outdoor air filter

224: indoor air filter 226: first heat exchange device

226-1: total heat exchange device

226-2: sensible heat exchange device

227: guide wing 228: second heat exchange device

230: fan cover 232: separation wall

236: indoor air fan 238: outdoor air fan

250: cover 252: upper and side cover

254: shock absorbing member 256: lower cover

258: side cover 400: exhaust module

410: upper member 402: outdoor air passage

430: middle member 432: outdoor air discharge port

434: guider 450: lower member

470: bolt 600: connection module

610: connection duct 620: connection adaptor

630: cover 632: button

Hereinafter, the embodiments of the present invention will be described in detail with reference to accompanying drawings. The terms and words used in the description as described below are not limited to the typical or dictionary definition, and they can be interpreted as proper meanings and definitions cosistent with the technical ideas.

As shown in Fig. 1, a ventilation device for windows of the present invention includes a heat exchange module 200 which is disposed in a left transom, a right transom or left and right transoms 110 of a divided window, an exhaust module 400 which disposed in a center transom 140 of the divided window, and a connection module 600 which connects the heat exchange module and the exhaust module 400.

As shown in Fig. 2, the heat exchange module 200 includes a heat exchange unit 210 and a cover 250.

As shown in Fig. 3, the heat exchange unit 210 includes a case 212, and an outdoor air filter 222, an indoor air filter 224, a

heat exchange device

226, 228, an indoor air fan 236, an outdoor air fan 238 and a fan cover 230 which are respectively received in the case 212.

At side surfaces of the case 212, there are formed an outdoor air introduction duct 214 for introducing outdoor air into the case 212, an outdoor air discharge duct 220 for discharging the introduced outdoor air to an outside of the case 212 and an indoor air discharge duct 218 for discharging indoor air to an outside of the case 212. Further, at a lower surface of the case 212, there are formed an indoor air inroduction hole 216 (referring to Figs. 6 to 8) for introducing the indoor air into the case 212 and a door (not shown) which is opened/closed or removable so as to facilely replace the outdoor air filter 222, the indoor air filter 224 and the heat exchange device 226.

Meanwhile, as shown in Fig. 2, when the heat exchange unit 210 is disposed in the transom 110, the outdoor air introduction duct 214 and the indoor air discharge duct 218 are inserted into the transom 110, and the outdoor air discharge duct 220 is directed in a direction that the exhaust module 400 is located, and the indoor air introduction hole 216 is directed downward. If the indoor air introduction hole 216 is directed downward, it is possible to prevent foreign substances such as floating dusts from being introduced throught the indoor air introduction hole 216 into the case 212.

The outdoor air filter 222 is to purify the outdoor air introduced into the case 212. Therefore, the outdoor air filter 222 is disposed so as to purify the outdoor air right after the outdoor air is introduced into the case 212 or just before the outdoor air is discharged to the outside of the case 212. However, if the outdoor air introduced into the case 212 directly passes through the

heat exchange device

226, 228, the

heat exchange device

226, 228 may be clogged. Thus, it is preferable that the the outdoor air filter 222 is disposed so as to purify the outdoor air right after the outdoor air is introduced into the case 212. In this case, as shown in Fig. 3, the outdoor air filter 222 is disposed between the outdoor air introduction duct 214 and the first heat exchange device 226.

The indoor air filter 224 is to purify the indoor air introduced into the case 212. If the indoor air introduced into the case 212 directly passes through the

heat exchange device

226, 228, the

heat exchange device

226, 228 may be clogged. Thus, it is necessary to provide the indoor air filter 224. The indoor air filter 224 is disposed so as to purify the indoor air right after the indoor air is introduced into the case 212. That is, the indoor air filter 224 is disposed between the indoor air introduction hole 216 and the first heat exchange device 226.

The heat exchange device is to exchange heat or heat and humidity between the indoor air and the outdoor air introduced into the case 212. As shown in Figs. 3 and 5, the heat exchange device includes the first and second

heat exchange devices

226 and 228. Herein, the first and second

heat exchange devices

226 and 228 are disposed so that the indoor air and the outdoor air is not mixed in the case 212. In case that the two heat exchange devices are included in the case 212, the first and second

heat exchange devices

226 and 228 may be all sensible heat exchange devices or total heat exchange devices, or may be a combination of the heat exchange device and the total heat exchange device. Preferably, in order to ensure a sufficient heat exchange time, one 226 of the heat exchange devices is formed into a hexagonal pillar. However, the present invention is not limited to this embodiment. As shown in Fig. 7, all of the two heat exchange devices may be formed into square pillars. Further, the present invention is not limited to the two heat exchange devices. As shown in Fig. 8, the number of the total heat exchange devices may be one or, if necessary, three or more.

As shown in Fig. 4, in order to enhance a sensible of the total heat exchange device and improve a load structure thereof, a heat exchange device 226 is a total heat and sensible heat exchange device in which a sensible heat exchange device 226-1 formed of a material such as aluminum which can perform sensible heat exchange is used as a frame, and a total heat exchange device 226-2 formed of a material such as paper which can perform total heat exchange is disposed therein. The sensible heat exchange device is continuously connected with the total heat exchange device so as to enclose the total heat exchange device. The heat exchange deivce may be formed into various shpaes such a net shape and a honeycomb shape.

The indoor air fan 236 is provided to introduce the indoor air into the indoor introduction hole 216 and then discharge the indoor air through the indoor air discharge duct 218 to the outside of the case 212. The outdoor air fan 238 is provided to introduce the outdoor air through the outdoor air introduction duct 214 into the case 212 and then discharge the outdoor air through the outdoor air discharge duct 220 to the outside of the case 212. The fan cover 230 functions to cover the indoor air fan 236 and the outdoor air fan 238. As shown in Fig. 5, a separation wall 232 is formed at the fan cover 230 so as to prevent the outdoor air and the indoor air passed through the second heat exchange device 228 from being mixed with each other.

Meanwhile, as shown in Figs. 6 to 8, it is preferable that a guide wing 227 is disposed at the lower surface of the case 212. The guide wing 227 is disposed between the outdoor air filter 222 and the first heat exchange device 226 and between the first and second

heat exchange devices

226 and 228 so as to guide flow of the outdoor air and the indoor air. Further, the guide wing 227 having a desired height is formed into a circular arc shape which is protruded toward the side surface of the case 212.

When the indoor air fan 236 and the outdoor air fan 238 are operated, the outdoor air is introduced through the outdoor air introduction duct 214 into the case 212 and then introduced through the outdoor air filter 222 into the first heat exchange device 226, and the indoor air is introduced through the indoor air introduction hole 216 into the case 212 and then introduced through the indoor air filter 224 into the first heat exchange device 226. And then, after senbile heat exchange or total heat exchange between the indoor air and the outdoor air is carried out in the first heat exchange device 226 without mixture therebetween, the indoor air and the outdoor air is introduced into the second heat exchnge device 228. After the senbile heat exchange or total heat exchange between the indoor air and the outdoor air is carried out in the second heat exchange device 228 without mixture therebetween, the indoor air and the outdoor air is introduced into the fan cover 230. After that, the indoor air and the outdoor air is passed through the indoor air fan 236 and the outdoor air fan 238, and the indoor air is discharged through the indoor air discharage duct 218 to the outside of the case 212, and the outdoor air is discharged through the outdoor air discharge duct 220 to the outside of the case 212. In Figs. 3, and 6 to 8, the flow of the outdoor air is designated by an unbroken line arrow, and the flow of the indoor air is designated by a broken line arrow.

The cover 250 functions to cover the heat exchange unit 210 and includes an upper and side cover 252, a side cover 258 and a lower cover 256, as shown in Fig. 8. The upper and side cover 252 has an approximately 'ㄱ' shape in section, and a hook 253 coupled with the left and right transoms 110 is formed at an end of the upper and side cover 252. The side cover 258 has an approximately 'ㄴ' shape in section, and a hook 259 coupled with the left and right transoms 110 is formed at an end of the side cover 258. The lower cover 256 has a straight shape in section, and one end of the lower cover 256 is contacted with the side cover 258, and the other end there is formed with a hook 257 coupled with the upper and side cover 252. In this case, after removing the lower cover 256 and opening a door (not shown) formed at the lower surface of the case 212, a user can replace the outdoor air filter 222, the indoor air filter 224 and the total heat exchange device.

Meanwhile, as shown in Fig. 9, a shock absorbing member 254 is provided at an inner surface of the upper and side cover 252. The shock absorbing member 254 functions to protect the heat exchange unit 210 from physical shock imparted on the heat exchange module 200, and also to prevent noise generated from the indoor air fan 236 and the outdoor air fan 283 from being transferred to the indoor space.

Hereinafter, the left and right transoms 110 in which the heat exchange module 200 is disposed will be described with reference to Figs. 9 and 10.

A pair of hollow holes are formed at the left and right transoms 110, and a pair of ducts 112 are respectively inserted into the hollow holes. The pair of ducts 112 receives the outdoor air introduction duct 214 and the indoor air discharge duct 218, respectively. A flange 114 having a bolt hole 116 is formed at one end of the duct 112.

A girder 120 for supporting the heat exchange unit 210 is coupled to the flange 114. The girder 120 has an approximately 'ㄴ' shape and is also fixed to the flange 114 by a bolt 118. The bolt 118 is passed through the girder 120 and then inserted into the bolt hole 116. Herein, the girder 120 has a desired width so that the replacement of the outdoor air filter 222, the indoor air filter 224 and the total heat exchange device is not disturbed. A shock absorbing member 122 is provided at an inner surface of the girder 120. The shock absorbing member 122 functions to protect the heat exchange unit 210 from physical shock imparted on the heat exchange module 200, and also to prevent noise generated from the indoor air fan 236 and the outdoor air fan 283 from being transferred to the indoor space.

At an end of the duct 112 which is opposite to the flange 114, there is provided a hood 126 having an opening which is foremd donwnwardly. The hood 126 functions to prevent rain and snow from being introduced into the duct 112. Meanwhile, it is preferable that a net 128 is provided at the opening of the hood 126. The net 128 functions to prevent floating matters such as leaves from being introduced into the duct 112.

At the opening of the duct 112, which is located in a direction of the hood 126, there is provided a damper 124 which prevents strong wind from being entered into the indoor space. As shown in Figs. 9 and 10, the damper 124 is extended parallel to the duct 112 and then bent downwardly after getting out of the duct 112. If the string wind is entered from the outdoor space into the hood 126, the damper 124 is rotated by the wind, and thus the duct 112 is closed. After that, if wind strength is decreased, the damper 124 is rotated reversely by its own weight, and thus the duct 112 is opened.

The exhuast module 400 is to receive the outdoor air from the heat exchange unit 210 and then discharge the outdoor air to the indoor space. As shown in Figs. 11 to 14, the exhaust module 400 includes an upper member 410, a middle member 430 and a lower member 450.

The upper member 410 includes a hook 412 which is formed at an end of the upper member 410 so as to be coupled with the center transom 140, and a side surface 414 which is surface-contacted with the center transom 414.

The middle member 430 includes a hook 436 which is formed at an end of the middle member 430 so as to be coupled with the upper member 410. The middle member 430 is partially surface-contacted with the upper member 410. An outdoor air passage is formed by coupling the upper member 410 and the middle member 430. Further, the middle member 430 has a plurality of guiders 434 which are arranged in a length direcetion of the center transom 140 and extended in a direction perpendicular to the length direcetion of the center transom 140. An outdoor air discharage port 432 is formed between the guiders 434. A flow direction of the outdoor air which is moved through the outdoor air passage 402 in the length direction of the center transom 140 is changed by the guider 434, and then the outdoor air is introduced through the outdoor air discharge port 432 into the indoor space. Meanwhile, the outdoor air discharge port 432 is fomred over an entire length of the exhuast module 400.

The lower member 450 includes a hook 452 which is coupled with the middle member 430, a hook 454 which is coupled with the upper member 410 and an upper surface 456 which is surface-contacted with the center transom 140. The lower member 450 is fixed to the center transom 140 by a bolt 470.

As shown in Fig. 2, the connection module 600 includes a connection adaptor 620, a connection duct 610 and a cover 630. The connection adaptor 620 is to facilitate the connection with the exhaust module 400 and the connection duct 610. One end of the connection adaptor 620 is inserted into the outdoor air passage 402 of the exhaust module 400, and the other end thereof is inserted into the connection duct 610. The connection duct 610 is to transfer the outdoor air from the heat exchange module 200 to the exhaust module 600. One end of the connection duct 610 receives the other end of the connection adaptor 620, and the other end thereof receives the outdoor air discharge duct 220. A cover 630 is to cover the connection adaptor 620 and the connection duct 610, and removable disposed at the window frame. The cover 630 includes a buttone 632 for controlling an operation of the outdoor air fan 238 and the indoor air fan 236, and relative electronic components.

As described above, the heat exchange module 200 is disposed at the left and right transoms 110 of the divided window, and the exhaust module 400 is disposed at the center transom 140 of the divided window (referring to Fig. 6). However, the arrangement of the heat exchange module 200 and the exhaust module 400 is not limited to the embodiment. The heat exchange module 200 may be disposed at the mullion 150, or the position of the heat exchange module 200 and the exhaust module 400 may be also changed.

According to the present invention, since the total heat exchange including heat and humidity exchange is achieved by the paper disposed at the center portion of the total heat/sensible heat exchange device, the sensible heat exchange efficiency of the total heat exchange device is improved by using the aluminum frame. Further, the total heat/sensible heat exchange device can be facilely manufactured with low cost and also has the excellent heat/humidity exchange efficiency and the high strength.

While the present invention has been described with respect to the specific embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

A heat exchange device of a ventilation device for windows, in which a plurality of heat exchange plates are stacked so as to form a plurality of hollow portions among the heat exchange plates,

wherein the heat exchange plate is formed with a center portion made of a material which can perform total heat exchange, and an outer frame formed to enclose the center portion and made of a material which can perform sensible heat exchange.
The heat exchange device according to claim 1, wherein the material which can perform total heat exchange is paper.
The heat exchange device according to claim 1, wherein the material which can perform sensible heat exchange is a metallic material.
The heat exchange device according to claim 3, wherein the metallic material is aluminum.
A heat exchange module of a ventilation device for windows, which is installed at a window frame of a divided window so as to perform heat exchange between indoor air and outdoor air without mixture therebetween, comprising:

a case which is supported by the window frame;

an outdoor air fan which is provided in the case so as to introduce the outdoor air from the window frame into the case and also to discharge the outdoor air of the case to an outside of the case;

an indoor air fan which is provided in the case so as to introduce the indoor air to be discharged from the window frame to an outdoor space into the case and also to discharge the indoor air of the case to the window frame; and

a heat exchange device in which a plurality of heat exchange plates are stacked so as to form a plurality of hollow portions among the heat exchange plates, and the heat exchange plate is formed with a center portion made of a material which can perform total heat exchange and an outer frame formed to enclose the center portion and made of a material which can perform sensible heat exchange.
The heat exchange module according to claim 5, wherein the case is provided with an outdoor air introduction duct and an indoor air discharge duct, and the outdoor air introduction duct and indoor air discharge duct are inserted into the window frame.
The heat exchange module according to claim 5, wherein the case is formed with an indoor air introduction hole for introducing the indoor air into the case, and the indoor air introduction hole is formed at a lower surface of the case.
The heat exchange module according to claim 5, further comprising an outdoor air filter which is provided in the case so as to purify the outdoor air introduced into the case,

wherein the outdoor air filter is disposed to purify the outdoor air before the outdoor air is passed through the heat exchange device.
The heat exchange module according to claim 5, further comprising a door which is opened/closed or removable at the lower surface of the case so as to facilely replace the outdoor air filter.
The heat exchange module according to claim 5, further comprising an indoor air filter which is provided in the case so as to purify the indoor air introduced into the case,

wherein the indoor air filter is disposed to purify the indoor air before the outdoor air is passed through the heat exchange device.
The heat exchange module according to claim 10, further comprising a door which is opened/closed or removable at the lower surface of the case so as to facilely replace the indoor air filter.
The heat exchange module according to claim 5, wherein the heat exchange device comprises:

a first heat exchange device which primarily performs the heat exchange between the indoor air and the outdoor air; and

a second heat exchange device which secondarily performs the heat exchange between the indoor air and outdoor air passed through the first heat exchange device.
The heat exchange module according to claim 12, wherein at least one of the first and second heat exchange devices has a hexagonal shape in section.
The heat exchange module according to claim 13, further comprising a door which is opened/closed or removable at the lower surface of the case so as to facilely replace the total heat exchange device.
The heat exchange module according to claim 11, further comprising a guide wing which is provided in the case so as to guide the outdoor air and the indoor air,

wherein the guide wing is disposed at at least one of a place between the outdoor air filter and the first heat exchange device and a place between the first heat exchange device and the second heat exchange device.
The heat exchange module according to claim 15, wherein the guide wing is formed into a circular arc shape which is protruded toward the side surface of the case.
The heat exchange module according to any one of claims 5 to 16, further comprising a cover which is removably coupled to the window frame so as to enclose the case,

wherein the cover has a noise absorbing function and a shock absorbing function.
The heat exchange module according to claim 17, wherein the cover comprises:

an upper and lower cover which is disposed at upper and side portions of the case and of which one end is formed with a hook coupled with the window frame;

a side cover which is disposed at a side portion of the case and of which one end is formed with a hook coupled with the window frame; and

a lower cover of which one end is contacted with the side cover and the other end is formed with a hook coupled with the upper and side cover.
The heat exchange module according to claim 18, wherein a shock absorbing member having a noise and shock absorbing function is disposed at an inner surface of the upper and side cover.
The heat exchange module according to claim 5, further comprising a fan cover for covering the outdoor air fan and the indoor air fan,

wherein the fan cover is formed with a separation wall for preventing the outdoor air and the indoor air passed through the heat exchange device from being mixed with each other.