[DESCRIPTION]

[invention Title]

VENTILATION DOOR [Technical Field] The present invention relates to a ventilation door, and more particular, to such a ventilation door, in which a ventilation passageway is formed on a door such as entrance door, room door or the like, which are openably and closeably mounted at the boundary of a place, the entrance of a building, or the place where people come in and out, so as to communicate the indoor/outdoor side of the door with each other via the ventilation passageway, so that the indoor air can be ventilated by an air circulation method using the convection phenomenon, whereby the energy required for air conditioning can be saved, as well as the sound insulating characteristic and the watertightness of the door can be improved to thereby provide a comfortable indoor environment. [Background Art]

Typically, doors such as entrance door, room door and the like are positioned at a contact point where one place is connected with another place, and mounted together with boundary elements such as wall, fence and the like so as to allow an entrance to be opened and closed. Furthermore, doors and windows have recently had an excellent airtightness due to improvement of construction technology and capacity of construction materials, so that the out-flow of the indoor air and the in-flow of the outdoor air can be securely interrupted, thereby enhancing air conditioning efficiency. However, there still occur problems in that mold is proliferated on a floor, walls, windows and the like of the balcony due to insufficient ventilation, thereby deteriorating the sanitary environment, and in that various

gases, dusts, bad odors, bacteria and the like are always exist together in the indoor, thereby causing diseases associated with the respiratory organs.

Accordingly, the same applicant as that of the present invention has previously disclosed a ventilation unit technology in a Korean Patent application No. 10-2004-4484 entitled "ventilation unit", and in a Korean Utility Model Laid-open Publication No. 362407 entitled "ventilation unit", respectively. The ventilation unit technology is constructed such that it is mounted at a side of windows and doors such as entrance door, living room door or window of the balcony, so that the amount of air circulated to the indoor can be always adjusted uniformly irrespective to the wind velocity flown in from the outside while performing the continuous ventilation function by the natural convection, so that since the air circulation is performed by the natural convection, the energy required for air conditioning can be maximally saved, as well as the sound insulating characteristic and the watertightness of the door can be improved, to thereby provide a comfortable indoor environment.

However, the ventilation unit as described above has to be mounted at a side of a veranda, a portion where a fix window of an entrance door is installed or the like as it is a single separate device in terms of a characteristic of the ventilation unit. Thus, it is substantially difficult to install the ventilation unit in a limited area where a fix window is not installed, such as entrance door of a typical apartment . [Disclosure] [Technical Problem]

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art,

and it is an object of the present invention to provide a ventilation door, in which a ventilation passageway is formed on a door such as entrance door, room door or the like, which are openably and closeably mounted at the boundary of a place, entrance of a building, or the place where people come in and out, so as to communicate the indoor/outdoor side of the door with each other via the ventilation passageway, so that the indoor air can be ventilated by an air circulation method using the convection phenomenon, whereby the energy required for air conditioning can be saved, as well as the sound insulating characteristic and the watertightness of the door can be improved to thereby provide a comfortable indoor environment. [Technical Solution] To accomplish the above object, according to the present invention, there is provided a ventilation door capable of openably and closeably mounted at the boundary of a place, the entrance of a building, or the place where people come in and out, which comprises; a first ventilation section mounted between an indoor plate and an outdoor plate of the door, the first ventilation section including a first ventilation passageway internally formed at the upper portion thereof in such a manner as to be opened at the upper end of the indoor plate, a second ventilation passageway internally formed at the lower portion thereof in such a manner as to be opened at the lower end of the outdoor plate, and a first connecting ventilation passageway for communicating the first ventilation passageway and the second ventilation passageway with each other therethrough; a second ventilation section mounted between an indoor plate and an outdoor plate of the door so as to be laterally opposed to the first ventilation section and partitioned by means of a heat-

insulating member serving as a boundary, the second ventilation section including a third ventilation passageway internally formed at the upper portion thereof in such a manner as to be opened at the upper end of the outdoor plate, a fourth ventilation passageway internally formed at the lower portion thereof in such a manner as to be opened at the lower end of the indoor plate, and a second connecting ventilation passageway for communicating the third ventilation passageway and the fourth ventilation passageway with each other therethrough; a pair of air adjustment members mounted at the first and the fourth ventilation passageways by means of a rib bar, respectively, and including a plurality of first through-holes formed thereon and a shielding plate coupled at an end thereof to the inner surfaces of the air adjustment members by means of a hinge, respectively so as to be opened/closed by a regulation lever; and a grill mounted at the second and third ventilation passageways by means of a fixing bar and including a plurality of second through-holes formed therein and a plurality of filters each mounted at a corresponding one of the second through-holes.

In another preferred embodiment according to the present invention, the first and second ventilation passageways of the first ventilation section communicate with the fourth and third ventilation passageways of the second ventilation section, respectively, by means of a heat radiating plate serving as a boundary. The heat radiating plate includes a heating means integrally or separately mounted therein. [Advantageous Effects]

As described above, according to a preferred embodiment of the present invention, a ventilation passageway is formed

on a door such as entrance door, room door or the like, which are openably and closeably mounted at the boundary of a place, entrance of a building, or the place where people come in and out, so as to communicate the indoor/outdoor side of the door with each other via the ventilation passageway, so that the indoor air is ventilated by an air circulation method using the convection phenomenon, whereby the energy required for air conditioning can be saved, as well as the sound insulating characteristic and the watertightness of the door can be improved, to thereby provide a comfortable indoor environment. [Description of Drawings]

Further objects and advantages of the invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view showing a state where a ventilation door is cut into its multi-layers according to a preferred embodiment of the present invention; FIG. 2 is a front view of an indoor plate of a ventilation door according to a preferred embodiment of the present invention;

FIG. 3 is an inner construction view of a ventilation door taken along the line A-A' of FIG. 2; FIG. 4 is an inner construction view of a ventilation door taken along the line B-B' of FIG. 2;

FIG. 5 is an inner construction view of a ventilation door taken along the line C-C of FIG. 2;

FIG. 6 is a perspective view showing a state where a ventilation door is cut into its multi-layers according to another preferred embodiment of the present invention

FIG. 7 is a perspective view of an indoor plate of a

ventilation door according to another preferred embodiment of the present invention/

FIG. 8 is an inner construction view of a ventilation door taken along the line D-D' of FIG. 6; FIG. 9 is an inner construction view of a ventilation door taken along the line E-E' of FIG. 6; and

FIG. 10 is an inner construction view of a ventilation door taken along the line F-F' of FIG. 6. [Mode for Invention] Hereinafter, a preferred embodiment of the invention will be explained in detail with reference to the appended drawings .

FIG. 1 is a perspective view showing a state where a ventilation door is cut into its multi-layers according to a preferred embodiment of the present invention, FIG. 2 is a front view of an indoor plate of a ventilation door according to a preferred embodiment of the present invention, FIG. 3 is an inner construction view of a ventilation door taken along the line A-A' of FIG. 2, FIG. 4 is an inner construction view of a ventilation door taken along the line B-B' of FIG. 2, and FIG. 5 is an inner construction view of a ventilation door taken along the line C-C of FIG. 2.

The present invention relates to a ventilation door, which is openably and closeably mounted at the boundary of a place, and the entrance of a building so as to ventilate indoor/outdoor air. The door 1 comprises an indoor plate Ia and an outdoor plate Ib, between which are filled with a heat-insulating member A such as urethane, glass wool, and polyester. The door 1 is mounted to a doorframe 2 through a hinge so as to open and close an entrance and has a ventilation construction operated by a temperature difference of the indoor air. To this end, the ventilation door of the

present invention comprises a first ventilation section 10, a second ventilation section 20, a pair of air adjustment members 30, 30', and a grill 40.

The first ventilation section 10 according to a preferred embodiment of the invention is mounted between an indoor plate Ia and an outdoor plate Ib of the door 1, and includes a first ventilation passageway 12 formed at the upper portion thereof in such a manner as to be opened at the upper end of the indoor plate Ia, a second ventilation passageway 14 formed at the lower portion thereof in such a manner as to be opened at the lower end of the outdoor plate Ib, and a first connecting ventilation passageway 16, through which the first ventilation passageway 12 communicates the second ventilation passageway 14 with each other. The first ventilation section 10 is constructed such that the first ventilation passageway 12 is opened at the upper end of the indoor plate Ia and is formed penetratingly in a lengthwise direction of the indoor plate Ia so as to communicate with the indoor portion, the second ventilation passageway 14 is opened at the lower end of the outdoor plate Ib and is formed penetratingly in a lengthwise direction of the outdoor plate Ib so as to communicate with the outdoor portion, and the first and second ventilation passageways 12, 14 communicate with each other by the first connecting ventilation passageway 16. The first connecting ventilation passageway 16 is formed between the first and second ventilation passageways 12, 14, in such a manner as to be extended from the lower end of the first ventilation passageway 12 to the upper end of the second ventilation passageway 14, such that the indoor/outdoor air are ventilated via the connecting ventilation passageway 16.

In this regard, the first ventilation section 10 is

operated such that contaminated warm air remaining in the indoor ascends to form an upper layer of the indoor air by the convection current phenomenon, the temperature of the upper air gradually descends in the first ventilation passageway 12 formed on the upper portion of the door 1, and then such upper air is gradually discharged to the outside via the first connecting ventilation passageway 16 and the second ventilation passageway 14 of the outdoor plate Ib.

Further, an air adjustment member 30, which will be described below, is installed at the first ventilation passageway 12 of the first ventilation section so as to regulate the transportation amount of the air ventilated, and a grill 40, which will be described below, is installed at the second ventilation passageway 14 so as to prevent impurities such as dust and the like from flowing in the indoor from the outside.

Meanwhile, the second ventilation section 20 is mounted to be laterally opposed to the first ventilation section 10 by means of a heat-insulating member A serving as a boundary. The second ventilation section 20 includes a third ventilation passageway 22 opened at the upper end of the outdoor plate Ib and penetrated in a lengthwise direction of the outdoor plate Ib so as to communicate with the outdoor portion, a fourth ventilation passageway 24 opened at the lower end of the indoor plate Ia and formed penetratingly in a longwise direction of the indoor plate Ia so as to communicate with the indoor portion, and a second connecting ventilation passageway 26, through which the third ventilation passageway 22 and the fourth ventilation passageway 24 communicate with each other. Here, the second ventilation section 20 is formed on the door 1 in a reverse direction to the first ventilation section 10 by means of the

heat-insulating member A serving as a boundary. In other words, the third ventilation passageway 22 opened at the upper end of the outdoor plate Ib of the door 1 to the outdoor portion communicates with the fourth, ventilation passageway 24 opened at the lower end of the indoor plate Ia of the door 1 to the indoor portion via the second connecting passageway 26. The second connecting passageway 26 is connected at the upper end thereof to the lower end of the third ventilation passageway 22 and connected at the lower end thereof to the upper end of the fourth ventilation passageway 24, so that a ventilation passageway can be formed to intercommunicate the upper portion of the outdoor plate Ib of the door 1 with the lower portion of the indoor plate Ia of the door 1. In this regard, the outdoor air flows in the indoor portion through the third ventilation passageway 22 of the second ventilation section 20, and is gradually supplied to the indoor portion through the second connecting ventilation passageway 26 and the fourth ventilation passageway 24, whereby a sharp temperature change of the indoor portion can be prevented, which is generated due to the instantaneous in- and out-flow of the indoor/outdoor air in the summer or winter season when the indoor/outdoor temperature difference is large. Further, the second ventilation section 20 includes a separate ventilation passageway formed thereon, which is discriminated from the first ventilation section 10 by the heat-insulating member A. Here, a material such as urethane, glass wool, polyester and the like, all of which have an excellent insulating capacity, can be employed as the heat- insulating member A. As shown in FIG. 1, the heat insulating member A is filled between the first and second ventilation

passageways 12, 14, between the third and fourth ventilation passageways 22, 24, and between the first and second connecting ventilation passageways 16, 26 opposed to each other. Thus, the heat transmission between the first and second ventilation section 10, 20 may be interrupted by the heat-insulating member A, whereby the natural convection is performed in a more positive manner, since the heat transmission between the first/second ventilation passageways 12, 14 and the third/fourth ventilation passageways 22, 24 is prevented while the indoor/outdoor air is ventilated therethrough.

Meanwhile, an air adjustment member 30' and a grill 40 are mounted at the third and fourth ventilation passageways 22, 24 in the same manner as the first and second ventilation passageways 12, 14 as described above, whereby the transportation amount of the ventilating air is controlled as well as impurities are prevented from flowing into the indoor, which will be described in detail below.

Further, the pair of air adjustment members 30, 30' according to the present invention is mounted at the first and fourth ventilation passageways 12, 24 by a rib bar 30a, respectively, and include a plurality of first through-holes 32 formed thereon and a shielding plate 34 coupled at an end thereof to an inner surface of the first and fourth ventilation passageways 12, 24 by means of a hinge H, respectively, in such a manner as to be opened/closed by a regulation lever 34a. The air adjustment member 30, 30' are mounted at the first ventilation passageway 12 of the first ventilation section 10 and the fourth ventilation passageway 24 of the second ventilation section 20, respectively, both of which are opened at the indoor plate Ia, so that the transportation amount of the air can be adjusted. At this

time, the air adjustment member 30, 30' are coupled to the first and fourth ventilation passageways 12, 24, respectively, by means of the rib bar 30a, which is inwardly protruded so as to pass through the plurality of first through-holes 32 at a predetermined interval. The plurality of first through- holes 32 are opened and closed by the shielding plate 34. The shielding plate 34 is pivotally coupled at an end thereof to the inner surfaces of the air adjustment members 30, 30' by the hinge H, respectively, and linkably connected at the other end thereof to the regulation lever 34a, so that the shielding plate 34 can be pivotally opened and closed by the upward and downward operation of the regulation lever 34a about the hinge H as a rotary axis.

In this regard, the transportation amount of the indoor/outdoor air is adjusted by the shielding plate 34 of the air adjustment members 30, 30' , as well as the air adjustment members 30, 30' are mounted so as to be individually adjusted, as shown in FIG. 2, so that each of the air transportation amount of the first and second ventilation section 10, 20 via the first and fourth ventilation passageways 12, 24 is independently controlled, whereby a comfortable indoor environment is provided all the time by allowing a user to control the air adjustment members 30, 30', as he or she wishes. Further, the grill 40 according to a preferred embodiment of the invention is mounted at the second and third ventilation passageways 14, 22 by means of a fixing bar 41, and includes a plurality of second through-holes 42 formed therein and a plurality of filters each mounted at a corresponding one of the second through-holes 42. The grill 40 formed into a plate shape has the plurality of second through-holes 42 formed thereon at a predetermined interval,

and is mounted on the second and third ventilation passageways 14, 22 of the outdoor plate Ib. The fixing bar 41 is mounted on a side of the second and third ventilation passageways 14, 22, respectively, in a lengthwise direction of the second and third ventilation passageways 14, 22 in a state where it partially receives the both side portions of the grill 40. At this time, the fixing bar 41 is fixed to the second and third ventilation passageways 14, 22 by means of a fastening means (not shown) such as piece, fixing clip, adhesive agent and the like, but a fastening means such as piece and fixing clip, which is capable of being readily attached and detached to/from the second and third ventilation passageways 14, 22, is preferably applied so as to fix the fixing bar 41 in order to periodically remove and clean the grill 40.

Further, the filter 44 is mounted to the plurality of second through-holes 42 of the grill 40. In this case, the filter 44 is manufactured in a net or an antibacterial filter and the like to thereby form the second through-holes. In this regard, the air flowing in the indoor through the second and third ventilation passageways 14, 22 of the first and second ventilation section 10, 20 is filtered via the filter 44, thereby providing a clean air, in which foreign substances such as dirt, sand, vermin and the like are removed by the filter 44.

The operation of the ventilation door according to a preferred embodiment of the invention will be described hereinafter.

First, when the air adjustment members 30 30' are opened in a state where the door 1 is closed, the upper layer air forming an upper layer of the indoor air by the convection current phenomenon while being remained in the indoor for a

long period of time, (for example, contaminated air or muddy air) flows in the first ventilation passageway 12 of the first ventilation section 10 formed in the upper portion of the door 1, and is gradually discharged to the outdoor through the first connecting ventilation passageway 16 and the second ventilation passageway 14 of the outdoor plate Ib as the temperature of the air flowing in the first ventilation passageway 12 descends. Simultaneously, while the outdoor air gradually flows in the indoor through the third ventilation passageway 22, the second connecting ventilation passageway 26 and the fourth ventilation passageway 24 of the second ventilation section 20, the indoor air is ventilated by the natural convention.

Further, as described above, the first ventilation section 10 functions to allow the indoor air to be discharged to the outdoor portion, and the second ventilation section 20 functions to allow the outdoor air to flow in the indoor portion. Also, the first and second ventilation section 10, 20 have further function such that the outdoor air flows in the indoor through the first ventilation section 10 or the indoor air is discharged to the outdoor through the second ventilation section 20 according to the change of the weather environment such as temperature difference or air pressure of the indoor/outdoor portion and the like, and such that the in- and out-flow of the indoor/outdoor air is simultaneously operated through the first and second ventilation section 10, 20.

Thus, the indoor air is ventilated while the indoor/outdoor air is gradually circulated through the first and second ventilation section 10, 20 integrally formed on the door 1, so that a comfortable indoor air can be maintained, and so that a sharp temperature change of the

indoor can be prevented, which is generated due to the instantaneous in- and out-flow of the indoor/outdoor air in a summer or winter season when the indoor/outdoor temperature difference is large, thereby improving an air conditioning efficiency.

FIG. 6 is a perspective view showing a state where a ventilation door is cut into its multi-layers according to another preferred embodiment of the present invention, FIG. 7 is a perspective view of an indoor plate of a ventilation door according to another preferred embodiment of the present invention, FIG. 8 is an inner construction view of a ventilation door taken along the line D-D' of FIG. 6, FIG. 9 is an inner construction view of a ventilation door taken along the line E-E' of FIG. 6 and FIG. 10 is an inner construction view of a ventilation door taken along the line F-F' of FIG. 6.

In accordance with, another preferred embodiment of the invention, the first and fourth ventilation passageways 12, 24 and the second and third ventilation passageways 14, 22 of the first and second ventilation section 10, 20 communicate with each other by means of a heat radiating plate 50 serving as a boundary. The heat radiating plate 50 includes a heating means 52 integrally mounted or separately mounted thereon. As shown in FIG. 6, the first and fourth ventilation passageways 12, 24 of the first and second ventilation section 10, 20 formed on the upper and lower portions of the indoor plate Ia of the door 1, respectively, intercommunicate with each other in the rear of the air adjustment members 30, 30' . At this time, the first and fourth ventilation passageways 12, 24 and the second and third ventilation passageways 14, 22, which communicate with each other, are partitioned by means of the heat radiating plate 50 serving as a boundary, and the heat

radiating plate 50 has a heating member 52 mounted therein.

At this time, the heating member 52 is constructed such that a heating coil or heating film and the like, which is heated when an electric power is applied thereto, is integrally mounted or separately mounted to/from the heating member 52. Here, a switch S is provided so as to allow the upper or lower portions of the heating member 52 to be individually controlled. Further, as shown in FIG. 9, preferably, the heat radiation plate 50 having the heating member 52 mounted thereon is bolt-fastened to the rib bar 30a in order to facilitate the maintenance and repair due to defects in the heat radiation plate 50, so that it can be easily attached and detached to/from the door 1 together with the air adjustment members 30, 30' . Meanwhile, the first and second ventilation section 10, 20 are constructed such that the first and fourth ventilation passageways 12, 24 and the second and third ventilation passageways 14, 22, which communicate with each other as described above, are partitioned by means of the heat radiating plate 50 serving as a boundary, respectively, and such that they have a ventilation construction, respectively, by which the air flowing in the indoor is heated, and the convention phenomenon is simultaneously induced. In case of such first and second ventilation section 10, 20, the shielding plate 34' of the air adjustment members 30, 30' is preferably mounted such that it is inserted into a pair of receiving grooves 30b formed on both ends of the air adjustment members 30, 30', as shown in FIG. 7 to 9, so as to be opened and closed by upward and downward sliding movement, whereby air convection is smoothly effected in the first and fourth ventilation passageways 12, 24.

The operation of the ventilation door according to

another preferred embodiment of the invention will be described hereinafter.

The heating member 52 mounted on the fourth ventilation passageway 24 of the second ventilation section 20, through which the outdoor air flows in, is operated to heat cold air, thereby allowing the cold air to flow in the indoor portion, in the winter when the indoor/outdoor temperature difference is large due to a heating. Further, in the spring or fall when air circulation is not actively effected by the natural convection phenomenon since the indoor/outdoor temperature difference is not significantly large, the heating member 52 divided into the upper and lower portions are simultaneously operated to heat all air flowing in the indoor portion via the first and second ventilation section 10, 20, or either any one of the divided upper and lower heating members 52 is selectively operated to induce a circulation of the indoor/outdoor air generated by the natural convection.

In more detail, for example, during the spring and fall season when the natural convection is not actively effected since the temperature difference between the upper and lower layers of the indoor air is not significantly large, when only the lower heating member 52 is locally operated, the indoor air is heated in the fourth ventilation passageway 24 to ascend to the first ventilation passageway 12, and then the temperature of the indoor air reached the first ventilation passageway 12 again drops to allow the indoor air to be discharged to the outdoor through the first ventilation section 10, whereby the air circulation is effected by the convection. While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the

appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.

[industrial Applicability] As described above, according to a preferred embodiment of the present invention, a ventilation passageway is formed on a door such as entrance door, room door or the like, which are openably and closeably mounted at the boundary of a place, the entrance of a building, or the place where people come in and out, so as to communicate the indoor/outdoor side of the door with each other via the ventilation passageway, so that the indoor air is ventilated by a circulation method using the convection phenomenon, whereby the energy required for air conditioning can be saved, as well as the sound insulating characteristic and the watertightness of the door can be improved to thereby provide a comfortable indoor environment.