KR200493379Y1 - Windows with anti-dust and insect protection - Google Patents

Abstract

The present disclosure is capable of simultaneously anti-vibration function against the indoor inflow of pests such as rainwater, dust, insects, mosquitoes, or flying flies, and against the inflow of dust such as fine dust and yellow dust into the room, but provides anti-vibration and insect-repellent functions for the purpose of air circulation, etc. It can be used selectively, and the problem of the roll type in which a gap is created between the upper part and the lower part by pushing the insect screen and the fine net due to the strong wind, and pests or fine dust is introduced therebetween, is solved. In the sliding type, the outer window or the inner side There is no structural problem in that a space to accommodate after sliding a window is not required, and there is no structural problem of applying a structure that slides left and right according to the designated accommodation space on the left and right, and the degree of contamination of the dustproof net and the screen can be grasped. It is possible to clean it cleanly, it relates to a window equipped with a dust-proof and insect-proof function having the advantage of being able to use a dust-proof net and a screen in a clean state.
A window with a dustproof and insect-repellent function according to an embodiment of the present disclosure includes a frame provided in a rectangular frame shape so as to be installed on a window frame to which the window is combined, and an outer filter that prevents the inflow of pests into the interior, and is mounted in the frame. It is provided with an outer window and an inner filter that prevents the inflow of dust such as fine dust and yellow dust into the interior, and is spaced apart from the outer window and includes an inner window mounted in the frame, and the inner window is hinged to the frame to be pulled. It characterized in that it is opened and closed by.

Description

Window with anti-vibration and anti-insect function {WINDOWS WITH ANTI-DUST AND INSECT PROTECTION}

The content disclosed in the present specification relates to a window equipped with a dust-proof and insect-repellent function, and in particular, against the ingress of rainwater, dust, insects, insects, mosquitoes, or insects such as flying flies indoors, and against the indoor inflow of dust such as fine dust and yellow dust. The present invention relates to a window with a dust-proof and insect-proof function capable of selectively using a dust-proof and insect-proof function for the purpose of air circulation and the like while simultaneously having a dust-proof function.

Unless otherwise indicated herein, the content described in this section is not prior art to the claims of this application, and inclusion in this section is not admitted to be prior art.

In general, a number of windows are installed in buildings such as apartments, officetels, and houses for indoor ventilation and lighting.

The window is provided with a screen along the edge of the window in order to block rainwater, dust, insects or insects flowing into the inside from the outside.

Here, the insect screen is installed to block the inflow of insects, insects, and dust with large particles, and the diameter of the net is somewhat large, and thus, it is difficult to block dust such as fine dust and yellow sand.

Due to these problems, recently, a screen for blocking rainwater, dust, insects or insects and a dustproof net for blocking dust such as fine dust and yellow dust have been installed together.

As an example in which the insect screen and the dust net are configured together as described above, Korean Patent No. 10-1871766 of Prior Art Document 1 "Roll-type insect screen with a dustproof function" has been disclosed.

The document relates to a main frame including an upper frame extending a predetermined length in the left and right direction, and a lower frame spaced apart from the upper frame at a predetermined distance and symmetrical, and both ends are coupled to one end of the upper frame and the lower frame. A first housing that has an accommodation space formed so that a first winding roller that is erected in the vertical direction and rotates by an elastic force therein is provided, and an insect repellent that is wound around the first winding roller and one side is exposed to the outside of the first housing. A roll, a first handle that is erected in an up-down direction so as to be connected to one side of the mosquito roll to control the withdrawal and retraction of the mosquito roll, and a pair that is fitted to both ends of the first handle and slides along the upper frame and the lower frame A second housing having a first fixing means and a second winding roller that is erected in a vertical direction so that both ends are coupled to the other ends of the upper frame and the lower frame and rotates by an elastic force therein, and the second A fine net wound on a take-up roller, one side of which is exposed to the outside of the second housing, and connected to the exposed side of the fine net, and is erected in an up-down direction to control withdrawal and retraction of the fine net, wherein the first A second handle that is detachable from the first handle so as to be moved integrally with the handle, and a pair of second fixing means that are respectively fitted to both ends of the second handle and slid along the upper frame and the lower frame, wherein the first The housing has a predetermined thickness and includes a first case surrounding the first winding roller, a first extension rod protruding from one end of the first case and protruding from one side of the auxiliary coupling protrusion, and the first extension rod A first blocking rod protruding from the end of the first handle to block the entry of the first handle, and one end is coupled to the other end of the first case to surround the first winding roller, the other end of the first case A second case spaced apart from one end of the second case, a second extension rod protruding from the other end of the second case to guide the withdrawal direction of the insect repellent roll, and a second extension rod protruding from the end of the second extension rod 1 The handle is It is made of a configuration including a second blocking rod 260 is formed to block the entry of the main coupling protrusion on one side.

Accordingly, a screen for blocking pests and a micro net for blocking the inflow of fine dust can be implemented as a single screen, and according to the user's selection, a screen or a micro net may be selected or the opening may be completely opened.

As another example, Korean Patent No. 10-1855405 of Prior Art Document 2 "window frame provided with a sliding opening/closing type dustproof net" has been disclosed.

The document describes an outer window in the shape of a square frame with a guide groove held at a predetermined depth along the edge of the inner circumferential surface, a main frame having a square shape inserted along the guide groove of the outer window, and a main frame by being combined with one side of the main frame. Including an auxiliary frame that can be pushed or pulled, an inner window that is inserted into the inner side of the outer window and can be opened and closed while sliding left and right along guide grooves formed in the upper and lower portions of the outer window, and a screen and an inner side mounted on one side of the outer window. It consists of a configuration including a dustproof net mounted on one side of the window.

Therefore, a screen is installed on one side of the outer window, and a dust net is installed on one side of the inner window, so that the outer window and the inner window can be opened and closed in a mutually sliding manner, so that dust blocking and ventilation functions can be selectively used.

However, the above-described Prior Art Document 1 has the advantage of selecting an insect screen or a fine net according to the user's selection according to the roll type, or being able to completely open the opening, but when the screen and the fine net are unfolded, the upper part and the lower part are not fixed. When the wind blows hard because it is unfolded, there is a problem in that the insect screen and the fine net are pushed to create a gap between the upper and lower parts, and pests or fine dust are introduced therebetween.

In addition, the above-described Prior Art Document 2 does not cause the problems of the aforementioned Prior Art Document 1, but since it is a sliding type, sliding the outer window or the inner window requires a space for accommodating the inner window or the outer window to the rear. Since it is opened only in one direction on the right, a structure that slides to the right should be applied to buildings with a structure that can secure the space on the right side, and a structure that slides to the left should be applied to buildings with a structure that can secure the space on the left side. There is a problem.

1. Korean Patent Registration No. 10-1871766 (2018.06.21.) 2. Korean Patent Registration No. 10-1855405 (2018.04.30.)

It is possible to simultaneously protect against the entry of rainwater, dust, insects, mosquitoes, and insects into the room, as well as against the inflow of dust such as fine dust and yellow dust into the room.However, it is possible to selectively use dustproof and insect-repellent functions for the purpose of air circulation, etc. It is intended to provide windows and doors with dustproof and insect-repellent functions.

It is intended to provide a window with dust-proof and insect-proof functions in which a gap is created between the upper part and the lower part as the wind blows hard and the insect screen and the fine net are pushed, and the problem of the roll type in which pests or fine dust enters therebetween is solved.

In the sliding type, there is no need for space to accommodate after sliding the outer window or the inner window, and the structure that slides left and right according to the designated accommodation space on the left and right is applied. We want to provide equipped windows.

A window with a dustproof and anti-insect function according to an embodiment includes a frame provided in a rectangular frame shape so as to be installed on a window frame to which a window is combined, and an outer filter that prevents the inflow of pests into the interior, and is mounted in the frame. And an inner window that is spaced apart from the outer window and mounted in the frame by having an inner filter that prevents the inflow of dust such as fine dust and yellow dust into the interior, and the inner window is hinged to the frame and opened and closed by pulling. It is provided with a window and doors equipped with a dustproof and insect-repellent function, characterized in that.

According to an embodiment, the inner window is a two-door type provided as a separate pair of hinged couplings fixed to the frame and pulled and opened and closed at the center of the frame.

According to an embodiment, the inner window is provided as a pair of hinged hinges that slide to the frame, and is a folding type that pulls and opens and closes from one edge of the frame to the other edge.

According to an embodiment, the inner window is provided with a handle for fixing or opening the frame.

According to an embodiment, the inner filter is a finer network than the outer filter.

The windows and doors equipped with the above-described dust-proof and insect-repellent functions are simultaneously capable of preventing rainwater, dust, insects, mosquitoes, or insects such as flying flies from entering indoors, as well as dustproofing against the inflow of dust such as fine dust and yellow dust into the room. It has the advantage of being able to selectively use anti-vibration and insect-repellent functions for purposes such as air circulation.

It has the advantage of solving the problem of a roll type in which a gap is created between the upper and lower parts as the wind blows hard and the insect screen and the fine mesh are pushed through, and pests or fine dust are introduced therebetween.

In the sliding type, a space to accommodate after sliding an outer window or an inner window is not required, and there is no structural problem of applying a structure that slides left and right according to the designated accommodation space on the left and right.

It has the advantage of being able to determine the degree of contamination of the dustproof net and the screen, and clean it cleanly, so that it is possible to use a clean dustproof net and an insect screen.

Figure 1 is a double-door type perspective view of a window equipped with a dustproof and mosquito function according to an embodiment of the present disclosure.
Figure 2 is a front view of the inner window side of the window provided with a dust-proof and insect-repellent function according to the embodiment of the present disclosure shown in Figure 1;
Figure 3 is a front view of the outer window side of the window provided with a dustproof and insect-proof function according to the embodiment of the present disclosure shown in Figure 1;
FIG. 4 is a view showing an open view of a window provided with a dustproof and mothproof function according to an embodiment of the present disclosure shown in FIG. 1.
5 is an enlarged view of part A shown in FIG. 2.
6 is a view for explaining the operation of the handle of the present disclosure shown in FIG.
7 is a view for explaining a locking shaft provided in the handle shown in Figure 6;
Figure 8 is a folding type perspective view of a window equipped with a dust-proof and insect-proof function according to an embodiment of the present disclosure.
9 is a view showing an open state of a window provided with a dust-proof and insect-proof function according to the embodiment of the present disclosure shown in FIG.
10 is a perspective view for explaining an air supply device and a detection sensor provided in a window having a dust-proof and insect-proof function according to an embodiment of the present disclosure.
11 is an example of installation of the air supply device and detection sensor shown in FIG.

Advantages and features of the present utility model, and a method of achieving them will become apparent with reference to the embodiments described later in detail together with the accompanying drawings. However, the present utility model is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, only the present embodiments make the disclosure of the utility model complete, and are generally in the technical field to which the utility model belongs. It is provided to completely inform the scope of the utility model to those with knowledge of, and this utility model is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

In describing the embodiments of the utility model, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the utility model, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present utility model, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout the present specification.

On the other hand, the window with dustproof and insect-repellent functions according to an embodiment of the present disclosure is anti-vibration against the inflow of rainwater, dust, insects, insects, mosquitoes, or insects such as flying flies indoors, and dusts such as fine dust and yellow dust into the interior. It relates to a window equipped with a dustproof and insectproof function capable of selectively using a dustproof and insectproof function for the purpose of air circulation, etc., and is commonly used in related technologies to which the present disclosure belongs, such as windows, window frames, and hinges. Description of the components will be omitted.

1 is a two-door type perspective view of a window equipped with a dustproof and anti-insect function according to an embodiment of the present disclosure, and FIG. 2 is an inner window side of a window provided with a dust-proof and anti-insect function according to the embodiment of the present disclosure shown in FIG. 3 is a front view of an outer window side of a window having a dustproof and insect-repellent function according to an embodiment of the present disclosure shown in FIG. 1, and FIG. 4 is a view according to an embodiment of the present disclosure shown in FIG. It is a drawing showing the open appearance of a window equipped with dustproof and insect-proof functions.

Referring to Figures 1 to 4, the window is provided with a dustproof and anti-insect function according to an embodiment of the present disclosure is made, including a frame (1), an outer window 20, an inner window 10.

The frame 1 is provided in the shape of a square frame so as to be installed on the window frame to which the window is combined.

As shown in Figs. 1 and 4, the frame 1 may have grooves to be installed on the window frame at the outer edges of the upper and lower sides, and through this, after installation on the window frame, it will be firmly fixed without deviating from the outside. I can.

At this time, the frame 1 is preferably formed with a deep groove on the upper side. Through this, the lower side is pushed forward toward the window frame while deeply inserting the upper side in which the deep groove is formed in the protrusions formed on the upper and lower sides of the window frame. It can be easily installed by allowing the lower groove to be seated on the protrusion formed on the lower side.

The outer window 20 is provided with an outer filter 21 that prevents the inflow of pests into the room, and is mounted in the frame 1.

The outer window 20 is mounted so as to face the outdoor side even within the frame 1 to block the entire interior of the frame 1, through which no gaps are generated, so that rainwater, dust, insects, insects, insects, insects such as mosquitoes, or fly flies enter the room. It functions as an insect repellent to prevent it.

In this, the rear of the outer window 20, the inner window 10 is located.

The inner window 10 is spaced apart from the outer window 20 and mounted in the frame 1 by having an inner filter 11 that prevents the inflow of dust such as fine dust and yellow dust into the room.

The inner window 10 is hinged to the frame 1 to be opened and closed by pulling, and the inner window 10 for this purpose is hinged to each of the edges of the frame 1 as shown in FIG. 4. It may be provided as a pair separated through, and may be provided in a double-door type to be opened and closed by pulling from the center side of the frame (1).

The inner filter 11 provided in the inner window 10 is provided with a finer mesh than the outer filter 21 provided in the outer window 20, through which fine dust and dust such as yellow dust enter the room. It acts as a dustproof function.

Since the inner window 10 as described above is mounted so as to face the interior inside the frame 1 and is opened in a double door shape, when it is difficult to circulate indoor and outdoor air due to the fine fine net of the inner filter 11, the left or right side One or both of the selected sides can be opened.

Here, the inner window 10 is not shown and mentioned in the drawing, but a thin steel plate with elasticity at the hinged portion of the frame 1 is rolled into a cylindrical shape so that a spring action occurs in the radial direction of the pin. By applying a spring pin, it is possible to prevent closing due to sudden wind, etc.

Meanwhile, FIG. 5 is an enlarged view of part A shown in FIG. 2, FIG. 6 is a view for explaining the operation of the handle of the present disclosure shown in FIG. 5, and FIG. 7 is a diagram illustrating a locking shaft provided in the handle shown in FIG. 6. It is a drawing to do.

As described above, the inner window 10 is provided with a handle 12 for fixing or opening the frame 1.

5 and 6, the handle 12 has a gripping end 121 provided on one side of the frame 1 and the inner window 10 at the center of the frame 1 so that the inner window 10 can be gripped and pulled. , The key insertion groove 122, which is provided in the gripping end 121 and into which a key for fixing the inner window 10 to the frame 1 is inserted, and the gripping end 121 spaced apart from the key insertion groove 122, It consists of a lever 123 that is provided rotatably and opens the inner window 10 fixed to the frame 1.

At this time, the above-described lever 123 is coupled through a rotation shaft 124 to the center of the rotation shaft 124 provided to be rotatable in the shape of a disk inside the inner window 10 as shown in FIG. It is located to be rotated from the outside of 10).

And, the rotation shaft 124 is spaced from each other in the vertical direction around the rotation shaft 124, one end is coupled through a hinge pin 126, and the extended other end penetrates the inside of the upper and lower parts of the inner window 10 A locking shaft 127 provided in pairs is provided.

Therefore, according to the configuration of the handle 12 described above, when the lever 123 is rotated up and down, the rotating body 125 is rotated in the rotational direction of the lever 123, and at the same time, the hinge pin ( A pair of locking shafts 127 coupled through 126 are linearly moved in the vertical direction by the rotating body 125, respectively, and exit from the penetrating portion of the inner window 10, and the inner window fixed to the frame 1 When the locking of (10) is released so that it can be opened, or when the rotation for the above-described opening is reversed, it is possible to fix it.

According to the present disclosure through the handle 12 as described above, the inner window 10 can be selectively opened conveniently and quickly, through which rainwater, dust, insects, mosquitoes, or insects such as flying flies can be prevented from entering the room. Insect-proof and dust-proof function against the inflow of dust such as fine dust and yellow dust into the room is possible at the same time, but it is possible to selectively use dust-proof and insect-proof functions for the purpose of air circulation, etc., and to accommodate after sliding the outer window or the inner window in the sliding type. The structural problem of the type of sliding left and right according to the accommodation space designated on the left and right is solved without the need for a space to do so.

In particular, through the fixing method of the frame (1) of the inner window (10) through the handle (12), the intensity of the wind increases as it goes to the higher floors, or the wind blows harder to push the insect screen and the fine net between the upper and lower parts. The problem of the roll type in which gaps are generated and pests or fine dust enters between them is solved.

Here, in addition to the method of the locking shaft 127 that is vertically linearly moved by the rotating body 125 rotated through the rotation of the handle 12, as shown in FIG. Each of the locking shafts 127 provided to protrude toward, but the locking shaft 127 may be provided to have a structure to enter the interior of the inner window 10 by having an elastic portion such as a spring therein, Through this, by pushing or pulling the handle 12, the locking shaft 127 advances to the inner window 10, so that when the inner window 10 is pushed and closed on the frame 1, various methods, such as a method of automatically locking. Can be applied.

On the other hand, FIG. 8 is a folding type perspective view of a window equipped with a dustproof and mosquito function according to an embodiment of the present disclosure, and FIG. 9 is a perspective view of a window with a dustproof and mothproof function according to the embodiment of the present disclosure shown in FIG. It is a drawing showing an open appearance.

As described above, the present disclosure may be provided in a folding type as shown in FIGS. 8 and 9 in addition to the double-door type, and the inner window 10 of the present disclosure for this purpose is hinged to the frame 1 by pulling As to be opened and closed, the inner window 10 is provided as a pair fastened through a hinge coupling that slides to the frame 1 as shown in FIG. 9 and is opened and closed by pulling from one edge of the frame 1 to the other edge. It may be provided in a folding type.

In the folding-type structure of the present disclosure, the inner windows 10 are provided in a pair through hinge coupling as shown in FIG. 9 to have a structure in which the inner surfaces facing the outer windows 20 meet each other, but the frame Although not shown in the drawings, bearings are provided at each of the opposite ends hinged to (1), and guide grooves into which the bearings are inserted may be formed in the upper and lower inner surfaces of the frame 1. Therefore, the opposite side hinged to the frame 1 through a bearing is moved from one edge of the frame 1 to the other side or from the other side to one side, so that the inner window 10 can be folded in a folding type.

On the other hand, FIG. 10 is a perspective view for explaining an air supply device and a detection sensor provided in a window equipped with a dust-proof and insect-proof function according to an embodiment of the present disclosure, and FIG. 11 is a view of the air supply device and the detection sensor shown in FIG. This is an example of installation.

The window provided with the anti-vibration and anti-insect function of the present disclosure according to the above may further include an air supply device 30 and a detection sensor 40.

10 and 11, the air supply device 30 provided in the present disclosure is provided on one side of the outer window 20, and is provided in the height direction inside the outer window 20 to provide an air supply device 30 A nozzle 31 through which the air generated from) flows and communicates with the nozzle 31, which are spaced at regular intervals inside the frame structure of the outer window 20 and are provided in a number of pieces, but enlarged in FIG. As shown in the figure, it consists of a configuration including a jetting hole 32 having an opening facing the outer filter 21.

According to the configuration of the air supply device 30 described above, the air generated by the air supply device 30 can be injected toward the outer filter 21, thereby enabling self-cleaning of the contaminated inner filter 11.

Although not shown in the drawing, the air supply device 30 of the present disclosure may be provided in a detachable form on one side of the outer window 20 by mounting a rechargeable battery, through which power supply for separate power supply In addition to the need for a device, it is easy to attach and detach when repairing due to a malfunction.

Meanwhile, the air supply device 30 according to the above may be directly operated by the user, but may be provided to enable self-operation according to contamination through the detection sensor 40.

The detection sensor 40 is provided along the outer filter 21 in a plurality of spaced apart from each other as shown in FIGS. 10 and 11 to measure the degree of contamination according to each position of the outer filter 21, and the connection line 41 It is interlocked with the air supply device 30 through.

Therefore, the air supply device 30 may be operated to automatically inject air when the contamination of the outer filter is a contamination corresponding to a preset value by interlocking with the detection sensor 40. At this time, the contaminated It goes without saying that it can be configured to spray by varying the intensity of air according to the degree of contamination of the part.

Here, the above-described air supply device 30 and the detection sensor 40 are shown to be provided in the outer window 20, but of course, they may be provided in the inner window 10 or both.

The windows and doors equipped with the above-described dust-proof and insect-repellent functions are capable of simultaneously preventing the ingress of rainwater, dust, insects, insects, mosquitoes, or flying flies into the room, and dust-proofing against the inflow of dust such as fine dust and yellow dust into the room at the same time. It is possible to selectively use anti-vibration and anti-insect functions for the purpose of air circulation, and a gap is created between the upper part and the lower part as the wind blows hard and the insect screen and the micro-net are pushed, and pests or fine dust are introduced into the roll-type problem. This is solved, and there is no structural problem in that a space to accommodate after sliding an outer window or an inner window is not required in the sliding type, and a structure that slides left and right to fit the designated accommodation space on the left and right is applied, and there is no structural problem. It has the advantage of being able to determine the degree of contamination of the dustproof net and the screen, and clean it cleanly, so that it is possible to use a clean dustproof net and an insect screen.

The disclosed contents are only examples, and various changes may be made by those of ordinary skill in the art without departing from the gist of the claims claimed in the utility model claims, so the scope of protection of the disclosed contents is limited to the above-described specific It is not limited to the embodiment of.

1: frame 10: inner window
11: inner filter 12: handle
121: gripping end 122: key insertion groove
123: lever 124: rotating shaft
125: rotating body 126: hinge pin
127: locking shaft 20: outer window
21: outer filter 30: air supply device
31: nozzle 32: nozzle
40: detection sensor 41: connection line

Claims (5)

A frame provided in a rectangular frame shape so as to be installed on the window frame to which the window is combined;
An outer window mounted in the frame and provided with an outer filter for preventing the entry of pests into the interior;
An inner window spaced apart from the outer window and mounted in the frame, provided with an inner filter that prevents the inflow of dust such as fine dust and yellow dust into the room;
An air supply device provided on one side of the outer window to clean the outer filter; And
A detection sensor provided in a plurality of spaced apart from each other along the outer filter to measure the degree of contamination according to each position of the outer filter; Including,
The inner window is hinged to the frame and is opened and closed by pulling,
The inner window is provided with a handle for fixing or opening the frame,
The handle includes a gripping end provided on one side of the inner window at the center of the frame so that the inner window can be gripped and pulled, a key insertion groove provided at the gripping end and inserted into a key for fixing the inner window to the frame, and the key It includes a lever rotatably provided at a gripping end spaced apart from the insertion groove to open the inner window fixed to the frame,
The lever is coupled to the center of a rotation shaft rotatably provided in the shape of a disk inside the inner window and is positioned to be rotated from the outside of the inner window,
The rotation shaft is spaced apart from each other in the vertical direction around the rotation shaft, one end is coupled through a hinge pin, and the other end extends through the inside of the upper and lower portions of the inner window and is provided with a pair of locking shafts,
When the lever is rotated up and down, the rotating body rotates in the direction of rotation of the lever, and at the same time, a pair of locking shafts coupled to the rotating body through a hinge pin are moved in a straight line by the rotating body in the vertical direction, respectively. It is characterized in that it is possible to open by releasing the locking of the inner window fixed to the frame after exiting from the through part, or to be able to be fixed when the rotation for opening is reversed,
The air supply device is provided in a height direction inside the outer window and includes a nozzle through which air generated from the air supply device flows, and a nozzle communicating with the nozzle, and the injection port is a vertical part in the frame structure of the outer window. It is characterized in that it is provided in a number of spaced at a certain interval within the corresponding, but has an opening facing the outer filter,
The air supply device is interlocked with the detection sensor and is operated to automatically inject air when the contamination of the outer filter corresponds to a preset value, but the intensity of the air is varied according to the level of contamination of the contaminated area. Window with a dust-proof and insect-repellent function, characterized in that to spray.
The method according to claim 1,
The inner window is provided as a separate pair of hinged couplings fixed to the frame, and is a double-door type that pulls and opens and closes at the center of the frame.
The method according to claim 1,
The inner window is provided as a pair of hinged hinges that slide on the frame, and is a folding type that opens and closes by pulling from one edge of the frame to the other edge of the frame.
delete The method according to claim 1,
The inner filter is a window with a dustproof and mothproof function, characterized in that the finer mesh than the outer filter.

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