WO2011132995A2

WO2011132995A2 - Ventilation device for windows with air purifying function

Info

Publication number: WO2011132995A2
Application number: PCT/KR2011/002964
Authority: WO
Inventors: Jockhyun Hwang; Jeongdeuk Yoon; Myoungseok Oh; Taehwoan Choi
Original assignee: Lg Hausys, Ltd.
Priority date: 2010-04-23
Filing date: 2011-04-22
Publication date: 2011-10-27
Also published as: RU2531738C2; JP5536277B2; JP2013525732A; WO2011132995A3; DE112011101402T5; KR20110118367A; CN102859289B; RU2012149941A; CN102859289A

Abstract

Disclosed is a ventilation device for windows with an air purifying function, which has a heat exchange unit for discharging indoor air to an outdoor space and introducing outdoor air into an indoor space and also has the air purifying function. The ventilation device for windows includes a heat exchange unit which is installed at a window and door frame so as to perform heat exchange between outdoor air and indoor air; and an air purification part which is provided in the heat exchange unit so as to purify the indoor air.

Description

VENTILATION DEVICE FOR WINDOWS WITH AIR PURIFYING FUNCTION

The present invention relates to a ventialtion device for windows, and particularly to a ventilation device for windows with an air purifying function, which has a heat exchange unit for discharging indoor air to an outdoor space and introducing outdoor air into an indoor space and also has the air purifying function.

Recently, awareness about the importance of indoor environmental and air quality is being grown according to an increase in indoor activity time and a tendency that buildings stand close together. In a residential type, such as apartments and officetels, that high-rise buildings stand close together, there is difficulty in opening wondows due to worries about introduction of foul outdoor air. Therefore, a degradation of indoor air quality is unavoidable unless separate ventilating means is provided.

As one of the conventional ventilating means, there has been developed and sold an air cleaner for purifying indoor air contained various pollutants such as exhasut gas and fine dust. However, the air cleaner functions to purify the polluted indoor air introduced through a window and the like and then simply circulate the purified air in a room while blocking the introduction of fresh external air. Thus, there is doubt as to effectiveness of the air cleaner.

To solve the problem, there is disclosed a window type ventilation device in Korean Patent Laid-Open No.10-2008-89001 (hereinafter, called as "first reference"). The window type ventilation device declosed in the first reference is disposed in a mullion of a window and door frame and also includes a cross-flow fan and a heat exchanger. The cross-flow fan functions to introduce outdoor air through an upper portion of the mullion into an indoor space and also to discharge indoor air through a lower protion of the mullion to an outdoor space. The heat exchanger receives a heat exchange medium such as ethylene glycol and glycerin glycol and extends along a extension direction of the mullion. Heat exchange between the introduced air and the discharged air is carried out by up and down reciprocating movement of the heat exchange medium.

Further, to solve the above-mentioned problem, there is disclosed a window equipped with a ventilation device in Korean Patent Laid-Open No.10-2004-75686 (hereinafter, called as "second reference"). The window equipped with the ventilation device declosed in the second reference includes a case which is disposed in a transom of a window frame. The case includes a first fan which discharges indoor air to an outdoor space, a second fan which introduces outdoor air into an indoor space, a partition wall which prevents the outdoor air introduced from the outdoor space and the indoor air discharaged to the outdoor space from being mixed with each other, and a heat exchanger which performs heat exchange between the outdoor air and the indoor air. The heat exchanger includes a fin type heat exchanger and a plate type heat exchanger in which a plurality of plates are stacted.

Meanwhile, while the ventilation device for windows is operataed, polluted outdoor air, yellow dust or noxious dust may be introduced into an indoor space. Recently, since the air pollution is getting worse due to an increase in the yellow dust and noxious dust, and respiratory disease is increased, national attention with respect to health is heightened. Therefore, the necessity and demand for an air cleaner is considerably increased.

Thus, there is necessity of developing a new ventilation device for windows, which can purifiys the polluted indoor air into fresh air through a separate air purifying function while the ventilation device is operated.

An object of the present invention is to provide a ventilation device for windows with air purifying function, which can purifiys the polluted indoor air into fresh air through a separate air purifying function while the ventilation device is operated.

To achieve the object of the present invention, the present invention provides a ventilation device for windows with an air purifying funtion, including a heat exchange unit which is installed at a window and door frame so as to perform heat exchange between outdoor air and indoor air; and an air purification part which is provided in the heat exchange unit so as to purify the indoor air.

Preferalby, the heat exchange unit includes a receiving case; an indoor fan which is disposed at one side of the case so as to introduce the indoor air discharged to an outdoor space into the case and also to discharge the indoor air of the case to the window and door frame; an outdoor fan which is disposed at the other side of the case so as to introduce the outdoor air of the window and door frame into the case and also to discharge the outdoor air of the case to an outside of the case; and a heat exchane device which is provided at a center portion of the case so as to perform the heat exchange between the indoor air and the outdoor air.

Preferalby, an outdoor air introduction duct through which the outdoor air is introduced is provided at one side of the case.

Preferalby, an indoor air discharge duct through which the indoor air is discharged is provided at the other side of the case.

Preferalby, an outdoor air discharge duct for discharging the outdoor air is provided at an end of the case so as to be orthogonal to the indoor air discharge duct.

Preferalby, an indoor air introduction hole through which the indoor air is introduced into the case is formed at an inner surface of the case.

Preferalby, 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 the outdoor air passing through the first heat exchange device.

Preferalby, the first and second heat exchange devices are all sensible heat exchange devices or total heat exchange devices, or a combination of the heat exchange device and the total heat exchange device.

Preferalby, the ventilation device further includes an outdoor air filter which is provided in the case so as to purify the outdoor air before the outdoor air is passed through the heat exchange device.

Preferalby, the ventilation device further includes an indoor air filter which is provided in the case so as to purify the indoor air before the indoor air is passed through the heat exchange device.

Preferalby, the air purification part includes a second outdoor air filter which is formed at the outdoor air discharge duct; a third outdoor air filter which is disposed at a place opposed to the outdoor air filter; and a second indoor air filter which is disposed at one side of the first heat exchange device so as to be opposed to the indoor air filter.

Preferalby, a damper which is roated in one direction or the other direction by a forward and reversible motor so as to open or close the outdoor air introduction duct and the outdoor air discharge duct is provided at an inner side of the outdoor air introduction duct 214 and the outdoor air discharge duct.

Preferalby, the ventilation device further includes a control unit which controls forward and reversible rotation of the motor.

Preferalby, the control unit is electrically connected with the outdoor fan of the heat exchange unit.

According to the ventilation device for windows with the air purifying function, it is possible to purifiy the polluted indoor air into fresh air through the separate air purifying function while the ventilation device is operated.

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. 1a is a schematic plan view showing an air purification mode of a ventilation device for windows with an air purifying function according to the present invention.

Fig. 1b is a schematic plan view showing a total heat exchange mode of the entilation device for windows with the air purifying function according to the present invention.

Fig. 2 is a perspective view of a heat exchange unit of the ventilation device for windows of Fig. 1, wherein a lower surface of the heat exchange unit is removed.

Fig. 3 is a perspective view of a fan cover of the heat exchange unit of Fig. 2.

Fig. 4 is a partial cross-sectional view as seen from an upper side after the heat exchange unit of Fig. 2 is cut laterally.

Figs. 5 and 6 are partial cross-sectional views shwoing modified examples of the heat exchange unit of Fig. 4.

Fig. 7 is a mimetic diagram showing a damper action of the ventilation device for windows with the air purifying function according to the present invention.

[Detailed Description of Main Elements]

210: hea exchange unit 212: case

220: outdoor air discharge duct 222: outdoor air filter

224: indoor air filter 226: first heat exchange device

228: second heat exchange device 230: fan cover

236: indoor air fan 238: outdoor air fan

300: control unit 310: motor

320: damper 322-1: second outdoor air filter

322-2: third outdoor air filter 324: second indoor air filter

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.

Fig. 1a is a schematic plan view showing an air purification mode of a ventilation device for windows with an air purifying function according to the present invention, Fig. 1b is a schematic plan view showing a total heat exchange mode of the entilation device for windows with the air purifying function according to the present invention, and Fig. 2 is a perspective view of a heat exchange unit of the ventilation device for windows of Fig. 1, wherein a lower surface of the heat exchange unit is removed.

Fig. 3 is a perspective view of a fan cover of the heat exchange unit of Fig. 2, Fig. 4 is a partial cross-sectional view as seen from an upper side after the heat exchange unit of Fig. 2 is cut laterally, and Figs. 5 and 6 are partial cross-sectional views shwoing modified examples of the heat exchange unit of Fig. 4.

Further, Fig. 7 is a mimetic diagram showing a damper action of the ventilation device for windows with the air purifying function according to the present invention.

Referring to Fig. 2, a 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. 4 to 6) 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, referring to Fig. 1a, the heat exchange unit 210 has an air purification part therein. In other words, a second outdoor air filter 322-1 is provided at the outdoor air discharge duct 220, and a third outdoor air filter 322-2 is provided at a place which is opposed to the outdoor air filter 222.

In addition, a second indoor air filter 324 is provided at one side of a first heat exchange device 226 to be described later so as to be opposed to the indoor air filter 224.

And, at an inner side of the outdoor air introduction duct 214 and the outdoor air discharge duct 220, there is provided a damper 320 (Fig. 7) which is roated in one direction or the other direction by a forward and reversible motor 310 (Fig. 7) so as to open or close the outdoor air introduction duct 214 and the outdoor air discharge duct 220.

The motor 310 is disposed at a proper place of the heat exchange unit 210 so as to be adjacent to the damper 320.

Meanwhile, referring to Fig. 1b, the indoor air filter 224 and the second indoor air filter 324 are provided at each center portion of both sides of the first heat exchange device 226 so as to be arranged in a direction parallel with the first heat exchange device 226.

Further, a separate switch (not shown) for selecting an air purification mode or a total heat exchange mode is provided at a proper place of the heat exchange unit 210. The switch is electrically connected with a control unit 300 (Fig. 7) so that the control unit 300 controls forward and reversible rotation of the motor 310 according to an operation of the switch. The control unit 300 is electrically connected with the outdoor air fan 238.

Meanwhile, 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. 2, 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 Fig. 2, 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. 5, 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. 6, the number of the total heat exchange devices may be one or, if necessary, three or more.

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. 3, a partition 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. 4 to 6, 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.

In the heat exchange unit 210 as described above, 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 226 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. 2, and 4 to 6, 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.

Meanwhile, the present invention may further include a cover (not shown) having a 'ㄷ' shape in section which covers the heat exchange unit 210. In this case, after the door (not shown) formed at the lower sruface of the case 212 is opened, the outdoor air filter 222, the indoor air filter 224 and the total heat exchange device can be replaced.

The heat exchange unit 210 and the cover are disposed at a proper place of the mullion or the transom of the window and door frame.

When the air purification mode is selected as occasion demands, as shown in Fig. 1a, the control unit 300 drives the motor 310 according to the operation of the switch, and the damper 320 connected with the motor 310 is rotated in one direction so as to close all of the outdoor air introduction duct 214 and the outdoor air discharge duct 220, and at the same time, the outdoor air fan 238 is turned off. While the indoor air is discharged through the outdoor air filter 222, the first heat exchange device 226, the second outdoor air filter 322-1 and the outdoor air discharge duct 220, the polluted air is purified. (an arrow direction of Fig. 1a).

Further, when the total heat exchange mode is selected as occasion demands, as shown in Fig. 1b, the control unit 300 drives the motor 310 according to the operation of the switch, and the damper 320 connected with the motor 310 is rotated in the other direction so as to open all of the outdoor air introduction duct 214 and the outdoor air discharge duct 220, and at the same time, the outdoor air fan 238 is turned on. In this situation, the indoor air is discharged through the outdoor air filter 222 and the first heat exchange device 226 to the outside of the heat exchange unit 210, or discharged through the third outdoor air filter 322-2, the first heat exchange device 226, the second outdoor air filter 322-1 and the outdoor air discharge duct 220 (an arrow direction of Fig. 1b).

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 ventilation device for windows with an air purifying funtion, comprising:

a heat exchange unit which is installed at a window and door frame so as to perform heat exchange between outdoor air and indoor air; and

an air purification part which is provided in the heat exchange unit so as to purify the indoor air.
The ventilation device according to claim 1, wherein the heat exchange unit comprises:

a receiving case;

an indoor fan which is disposed at one side of the case so as to introduce the indoor air discharged to an outdoor space into the case and also to discharge the indoor air of the case to the window and door frame;

an outdoor fan which is disposed at the other side of the case so as to introduce the outdoor air of the window and door frame into the case and also to discharge the outdoor air of the case to an outside of the case; and

a heat exchane device which is provided at a center portion of the case so as to perform the heat exchange between the indoor air and the outdoor air.
The ventilation device according to claim 2, wherein an outdoor air introduction duct through which the outdoor air is introduced is provided at one side of the case.
The ventilation device according to claim 3, wherein an indoor air discharge duct through which the indoor air is discharged is provided at the other side of the case.
The ventilation device according to claim 4, wherein an outdoor air discharge duct for discharging the outdoor air is provided at an end of the case so as to be orthogonal to the indoor air discharge duct.
The ventilation device according to claim 5, wherein an indoor air introduction hole through which the indoor air is introduced into the case is formed at an inner surface of the case.
The ventilation device according to claim 2, 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 the outdoor air passing through the first heat exchange device.
The ventilation device according to claim 7, wherein the first and second heat exchange devices are all sensible heat exchange devices or total heat exchange devices, or a combination of the heat exchange device and the total heat exchange device.
The ventilation device according to claim 2, further comprising an outdoor air filter which is provided in the case so as to purify the outdoor air before the outdoor air is passed through the heat exchange device.
The ventilation device according to claim 2, further comprising an indoor air filter which is provided in the case so as to purify the indoor air before the indoor air is passed through the heat exchange device.
The ventilation device according to any one of claim 5, 6, 7 and 10, wherein the air purification part comprises:

a second outdoor air filter which is formed at the outdoor air discharge duct;

a third outdoor air filter which is disposed at a place opposed to the outdoor air filter; and

a second indoor air filter which is disposed at one side of the first heat exchange device so as to be opposed to the indoor air filter.
The ventilation device according to claim 3 or 5, wherein a damper which is roated in one direction or the other direction by a forward and reversible motor so as to open or close the outdoor air introduction duct and the outdoor air discharge duct is provided at an inner side of the outdoor air introduction duct 214 and the outdoor air discharge duct.
The ventilation device according to claim 12, further comprising a control unit which controls forward and reversible rotation of the motor.
The ventilation device according to claim 13, wherein the control unit is electrically connected with the outdoor fan of the heat exchange unit.