KR20150068849A

KR20150068849A - Opening and Closing Type Louver

Info

Publication number: KR20150068849A
Application number: KR1020130154993A
Authority: KR
Inventors: 손장웅; 김건회
Original assignee: (주)동양공조
Priority date: 2013-12-12
Filing date: 2013-12-12
Publication date: 2015-06-22

Abstract

In the present invention, the blade is normally closed to block the movement of air into and out of the structure. When the internal pressure of the structure rises, the blade is opened by the pressure to relieve the rising pressure. To a retractable louver that closes the blade. The retractable louver (1) of the present invention is a retractable louver installed in a vent of a structure, comprising: an outer frame (10) forming a whole outline skeleton; A partition frame (20) for dividing an inner space of the outer frame (10) into a plurality of perforated openings (21); A bearing 30 formed on the partition frame 20 on the upper side of the opening 21 so as to face each other; A blade 40 rotatably mounted on the bearing 30 on both sides of the upper portion and pivoted about the pivot 41 to open and close the opening 21; A link mechanism (50) for interlocking the opening and closing of the upper and lower blades (40); An airtight mechanism 60 for applying a resilient force to the blade 40 to close the opening 21; And the blade 40 protruding outwardly from the partition frame 20 along the lower side of the opening 21 and the pressure of the airflow flowing from the inside to the outside through the opening 21 is located at the upper portion of the opening 21. [ An air flow guiding piece 70 which is further applied to the inner surface of the opening 21 and guides the blade 40 to be less attached to the outer surface of the blade 40 located at the lower portion of the opening 21; .

Description

Opening and Closing Type Louver

The present invention relates to a louver, and more particularly, to a louver. More particularly, the present invention relates to a louver. More particularly, the present invention relates to a louver, and more particularly, to a louver that closes a blade to block the movement of air into and out of a structure, , And a retractable louver that closes the blade again when internal pressure is increased.

The louvers installed in various structures such as buildings and facilities are widely used for various purposes such as ventilation, air conditioning, prevention of leakage of harmful substances, blocking of foreign matter, and shading.

Although the louver has been developed in a wide variety of structures depending on the purpose of use, the louver basically has a structure in which thin blades of a certain width are installed at regular intervals on a square frame attached to a vent or a window.

The louver can be divided into various categories according to the standard, but it can be classified into the 'retractable type' in which the opening and closing angles of the blades can be changed and the 'fixed type' in which the variable angle can not be changed, and the retractable louver is divided into the manual type and the electric type .

As a conventional technology relating to a retractable louver, there is known a protection device for a nuclear reactor facility equipped with a swing panel, Korean Patent Registration No. 10-1216457, Korean Utility Model No. 20-0360556 'Ventilation Window', Korean Patent No. 10-0929813, And its 'opening and closing structure', and Korean Patent Laid-Open No. 10-2013-0093341 'Pressure Excess Lubrication System'.

Among the use environment of the structure, in a normal steady state, the vent (or window) is closed to prevent the leakage of the generated substance from the outside and the inflow of contaminants from the outside, but an abnormal situation occurs in which the internal pressure of the structure is increased In some cases, it is necessary to immediately open the vent to relieve the internal pressure of the structure, and to close the vent when the internal pressure is relieved. One representative example is a containment structure of a nuclear power plant. A conventional technology capable of referring to the use environment of a reactor containment building is Korean Patent No. 10-0320831 entitled " Decompression system for raw materials. &Quot;

Therefore, the louver installed in the vent of the nuclear power plant containment closes the vent so as to block the flow of air inside and outside. When the internal pressure of the structure rises, the vent is opened to relieve the elevated pressure, It is necessary to operate to seal the vent again.

However, the louvers developed so far are not suitable for use in the same environment as the enclosure of the nuclear power plant as described above, and even if some of the conventional louvers are modified to change the design according to the use environment of the containment structure Not only can not reliably block the air flow as much as desired in the closed state but also can not be opened sufficiently due to the obstruction of the opening due to the airflow of the air discharged when the blade is opened by the increased internal pressure There is a problem that it takes a long time to solve the internal pressure that is generated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and a device for preventing the air from flowing into and out of a structure by hermetically closing the blades at normal times but removing the raised internal pressure by opening the blades when the internal pressure of the structure rises, And to provide a retractable louver that closes the blades again.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner that can maintain a good closed state such that air flow inside and outside a structure can be effectively blocked in a normally closed state, To provide a retractable louver that can quickly relieve pressure and return to a good seal once the internal pressure is relieved.

A retractable louver is provided in the vent of the structure in accordance with the present invention.

The retractable louver according to the present invention includes an outer frame, a partition frame, a bearing, a blade, a link mechanism, an airtight mechanism and an airflow guide.

The outer frame is a frame member that forms a whole outer frame.

The partition frame is a frame member that divides the inner space of the outer frame into a plurality of perforated openings.

The bearing is a bearing member formed on the upper side of the opening so as to face the partitioning mold.

The blade is a plate-like member that is pivotally mounted on both sides of the upper portion and is pivotally mounted on the bearing, and rotates around the pivot shaft to open and close the opening.

The link mechanism is a mechanism for interlocking the opening and closing of the upper and lower blades.

The closing mechanism is an elastic mechanism in which the blade applies an elastic force toward the opening.

Wherein the airflow guiding piece is protruded outwardly from the partitioning mold along a lower side of the opening and a pressure of an airflow flowing from the inside to the outside through the opening is further applied to the inner surface of the blade located at the upper portion of the opening Shaped member for guiding the blade to be applied to the outer surface of the blade located at a lower portion of the opening.

The retractable louver of the present invention opens the opening by the internal pressure of the raised structure to relieve the raised internal pressure and closes the opening again when the raised internal pressure is relieved.

The openable louver of the present invention is formed to protrude inwardly on the lower lateral side of the inner surface of the blade and pressurized toward the opening of the blade located at the upper portion of the opening by the air current flowing from the inner side to the outer side through the opening The air flow resistance piece may be further included.

The partition frame may be inclined to the outer frame in a direction where the lower side is biased toward the outside, so that the opening is closed before the blade reaches the vertical position.

The openable louver of the present invention comprises a first sealing plate which is provided in the partition frame and is provided so as to surround the opening so as to protrude from the opening by a predetermined width and a second sealing plate provided on the blade, And the second sealing plate may further include a second sealing plate, and in a state in which the blade is closed, a protruding portion of the first sealing plate and a covering portion of the protruding portion of the second sealing plate are in surface contact, Sealing is done.

The closing mechanism may include a constant stitch spring. The constant stitch spring has one end fixed to the inner lower end of the blade at the lowermost position and the other end fixed to the lower end of the take- And an elastic force is applied to the blade so as to be wound on the winding roller to close the blade.

The openable louver according to the present invention has the following effects.

First, when the internal pressure of the structure rises, the blades are opened by the increased internal pressure to discharge the air inside, and when the internal pressure is released, the blades are sealed again, In a situation where the inner pressure of the structure rises while blocking the flow, the elevated pressure can be relieved.

Secondly, in the process of opening the blades by the internal pressure of the structure and discharging the air inside, the phenomenon that the airflow flowing through the opening interferes with the opening of the blades, As the airflow resistance piece is relaxed, the blade is opened sufficiently more reliably when the blade is opened with the increased internal pressure, so that the increased internal pressure of the structure can be quickly resolved.

Third, as the blades are closed in the inclined state before the blade reaches the vertical position, the elasticity of the blades is added together with the elasticity of the blades due to the closing mechanism, So that the blade can seal the opening more reliably.

Fourthly, in a state where the blade is closed, sealing is realized in such a manner that the first sealing plate on the side of the partitioning plate and the second sealing plate on the side of the blade are in surface contact with each other in a superposed state, Thereby realizing sealing of the opening more reliably.

1 is a closed perspective view of an exemplary retractable louver according to the present invention,
Figure 2 is an open partial cutaway perspective view of an exemplary retractable louver according to the present invention,
3 is a partially cut exploded perspective view of an exemplary retractable louver according to the present invention,
Figure 4 is an open longitudinal section of an exemplary retractable louver in accordance with the present invention;
5 is a closed longitudinal section view of an exemplary retractable louver in accordance with the present invention.

Hereinafter, the retractable louver of the present invention will be described in detail with reference to the accompanying drawings. The following specific examples are illustrative of the present invention and are not intended to limit the scope thereof.

The openable louver 1 according to the present invention is a louver for mounting to a structure for ventilation such as a vent or a window formed in a structure such as a containment structure of a nuclear power plant (referred to as "vent" in the description of the present invention) The outer frame 10, the partition frame 20, the bearing 30, the blade 40, the link mechanism 50, the sealing mechanism 60, and the airflow guide piece 70, as shown in Figs. 1 to 5, .

In the description of the louver 1 of the present invention, "inside" refers to the inside (right side in FIG. 4) of the structure for installing the louver 1 of the present invention, "outside" Left).

The outer frame 10 is a frame member for forming an outer frame for installing the components constituting the present invention and for fixing the louver 1 of the present invention to the vent of the structure.

1 to 5 are examples in which upper and lower transverse frames and right and left vertical frames are assembled into a rectangular shape having a through hole formed therein according to the size of the vent formed in the structure to form the outer frame 10. The outer frame 10 can be formed by pressing, welding and / or bolting a steel sheet having an appropriate thickness. The outer frame 10 has a constant width W in the inward and outward directions to provide a space in which the blades 40 can be opened and closed.

The partition frame 20 is a frame member which is divided into a number of openings 21 corresponding to the number of the blades 40 for installing the inner space of the outer frame 10.

The partition frame 20 of the illustrated embodiment is configured such that the outer frame 10 is divided into upper and lower openings 21 so that four blades 40 can be vertically mounted on the outer frame 10, It is an example. The dividing section of the outer frame 10 by the dividing frame 20 can be appropriately selected in accordance with the size of the vent or the like for installing the louver 1 of the present invention. For example, To five openings 21, and arrangements of such units of two rows or three columns in the lateral direction are possible.

The bearings 30 are formed in the partition frame 20 (some of them may be formed in the outer frame), and the bearings 30 are formed on the upper side of the respective openings 21 at positions facing each other. For example, And can be formed in the form of a sleeve bearing shown in the figure, and supports both of the pivot shafts 41 of the blade 40 in a rotatable manner as described later.

The blade 40 is a plate-shaped member of a unit size that opens and closes each opening 21 depending on the internal pressure of the structure in the louver 1 of the present invention. Each of the blades 40 has pivot shafts 41 on both sides thereof. Therefore, when the pivot shafts 41 on both sides are rotatably mounted on the bearings 30 on both sides of the partition 20 at the corresponding positions, the respective blades 40 are rotated about the upper pivot axis 41 The corresponding opening 21 is closed and the opening 21 is opened by rotating the lower side of the blade 40 toward the inside.

The link mechanism 50 is a member that allows a plurality of (e.g., four) blades 40 arranged vertically in one row to be opened and closed integrally with each other without being individually opened and closed. The link mechanism 50 is not particularly limited as long as it can interlock the opening and closing of the upper and lower blades 40.

The link mechanism 50 of the illustrated embodiment includes a number of levers 51 corresponding to the number of blades 40 and one interlocking rod 52. One end of each of the levers 51 is rotatably installed at the lower portion of the outer surface of the corresponding blade 40. The other end of each lever 51 is connected to an interlocking rod 52, respectively. By the action of the link mechanism 50, all the blades 40 constituting one row are simultaneously opened and closed at the same angle.

The closing mechanism 60 is not particularly limited as long as the blade 40 is a mechanism that provides an elastic force toward closing the opening 21 and is capable of applying a force toward closing the blade 40.

In the illustrated embodiment, the sealing mechanism 60 is an example of applying a band spring 61 that applies an elastic force to the winding side when no external force acts, and one end of the band spring 61 constitutes one row And the other end of the strip spring 61 is fixed to the take-up roller 62 provided in the outer frame 10 at the corresponding position. When the external force is not applied, the strip spring 61 is wound on the take-up roller 62 to pull the lower portion of the blade 40 toward the inside so that the blade 40 closes the opening 21, The blade 40 can overcome the elastic force of the strip spring 61 and move the opening 21 toward the outside of the blade 40. [ Open.

Particularly, as the sealing mechanism 60, there is a Constant Force Spring (not shown) which keeps the elastic force applied to the side of closing the blade 40 constant in the entire section from the closed state to the fully opened state of the blade 40, As a result, the greater the opening angle of the blade 40, the more uniformly the elastic force of the closing mechanism 60 that closes the blade 40 is maintained, without increasing gradually. As a result, It is possible to smoothly open the blade 40 by the internal pressure.

According to the above-described function of the closing mechanism 60, when the blade 40 is closed, the inner pressure of the structure rises, and the airflow due to the increased inner pressure causes the inner surface of the blade 40 to move inward The lower portion of the blade 40 is pivoted outward to open the opening 21 and the internal airflow of the structure is exhausted to the outside through the opened opening 21. [

Referring to Fig. 4, the airflow flowing from the inside to the outside through the specific one opening 21 opens the upper blade 40 and the upper blade 40, As a result, when the inner pressure of the structure is increased, the blades 40 are pressed against the lower side of the blades 40 by pressing the outer side of the blades 40 downward. However, a phenomenon occurs in which the time for solving the internal pressure is delayed due to insufficient opening without opening at a sufficient angle.

The airflow guiding piece 70 is a plate-like member protruding outwardly from the partitioning mold 20 along the lower lateral side of the opening 21. The airflow guide piece 70 can be installed in the partition frame 20 by, for example, bolting.

The airflow guiding member 70 is configured such that the pressure of the airflow flowing from the inside to the outside through the opening 21 is applied to the inner surface of the blade 40 located at the upper portion of the opening 21, And acts on the outer surface of the blade 40 located at the lower side to be less likely to be applied.

That is, when the airflow flows from the inside to the outside through the opening 21, the airflow guide piece 70 induces the airflow to flow more toward the upper side of the opening 21 and decrease downward, 21 are applied more concentratedly to the inner surface of the blade 40 located on the upper side thereof and are less applied to the outer surface of the blade 40 located on the lower side. Eventually, the airflow passing through the airflow guide piece 70 The greater the opening angle of the blades 40 in the air flow of the same pressure, the more quickly the internal pressure relief through the opening 21 due to the opening of the blades 40 proceeds.

The airflow guiding piece 70 of the illustrated embodiment protrudes substantially horizontally outward from the partition frame 20 and curves slightly toward the blade 40 located on the upper side to guide the airflow to the inner surface of the upper blade 40 And is not particularly limited as long as it is a shape capable of concentrating the pressure of the airflow on the inner surface of the upper blade 40.

The openable louver 1 according to the present invention may further include an airflow resistance piece 80. The airflow resistance piece 80 may be integrally formed on the lower side of the inner surface of the blade 40, And the airflow flowing from the inside to the outside through the opening 21 strikes the airflow resistance piece 80 so that the blade 21 located at the upper portion of the opening 21 40 are subjected to more airflow pressure toward the open side.

The airflow resistance piece 80 is not particularly limited as long as the airflow resistance piece 80 is shaped so as to receive more airflow toward the open side of the blade 40. In the illustrated embodiment, The bent portion of the airflow resistance piece 80 is obtained by bending the airflow resistance piece 80 in a state where the blade 40 is opened to some extent, 80 and the space enclosed by the inner surface of the blade 40 more surely surrounds the airflow flowing from the inner side to the outer side so that the pressure of the airflow applied to the lower side of the inner side of the blade 40 becomes larger .

According to the louver 1 according to the present invention described above, in a normal situation in which the internal pressure of the structure is within a certain range, the elastic force of the sealing mechanism 60 and the self- And if the internal pressure of the structure rises to such an extent that the internal pressure of the structure can overcome the elastic force of the closing mechanism 60 and the load of the blade 40, And the opening angle of the blade 40 is further increased by the action of the airflow resistance piece 80 which can be selectively added to the airflow guide piece 70, The blades 40 securely seal the openings 21 by the elastic force of the closing mechanism 60 and the self weight of the blades 40 after the internal pressure is relieved.

When the blade 40 is vertically positioned with the opening 21 closed, the closing of the opening 21 by the blade 40 substantially depends only on the elastic force of the closing mechanism 60, May be unsatisfactory.

The louver 1 according to the present invention can be provided with the partition frame 20 inclined to the outer frame 10 such that the lower portion thereof is biased toward the outside so that the blade 40 has the opening 21 at a position before reaching the vertical position So that the sealing of the opening by the blade can be more surely ensured.

4 shows an example in which the partition frame 20 is inclined at an angle (A) of about 82 degrees to the outer frame 10 with the lower side biased outward. According to this specific example, the opening (21) is closed with the blade (40) closing the opening (21) at an angle of about 82 degrees, which is not vertical, Is the sum of the elastic force of the closing mechanism (60) and the force of the blade itself, so that the closing of the opening by the blade can be realized more satisfactorily.

The use environment of the louver 1 according to the present invention is not necessarily, but is an environment that satisfactorily blocks air flow inside and outside the structure.

The louver 1 of the present invention may include a first sealing plate 91 and a second sealing plate 92 to block air flow inside and outside the structure. For example, a rubber plate or the like can be used as the first sealing plate 91 and the second sealing plate 92, which are excellent in airtightness when they are in surface contact with each other.

The first sealing plate 91 is formed of, for example, a seamless rubber rubber plate that penetrates through the center, and is installed in the partition frame 20. The first sealing plate 91 surrounds the opening 21 so as to protrude by a predetermined distance from the opening 21 have. In the illustrated embodiment, the first sealing plate 91 is placed on the partition frame 20 forming the opening 21 and the fixing plate (not shown) is bolted on the first sealing plate 91, (20).

The second sealing plate 92 is formed on the blade 40 such that the second sealing plate 92 is formed as a seamless plate and is protruded by a predetermined width around the outer periphery of the blade 40. 3, a second sealing plate 92 having a size larger than that of the second sealing plate 92 is mounted on the blade main body 42 which is a skeleton of the blade 40 and a fixing plate 43 is attached to the second sealing plate 92 again. And the second sealing plate 92 is attached to the blade 40 by fastening the bolt 93 with the bolt 93. In the illustrated embodiment, the airflow resistance piece 80 is formed integrally with the fixing plate 43, but it is also possible to form the airflow resistance piece 80 separately.

The protruding portion 91a of the first sealing plate 91 provided on the partitioning mold 20 and the protruding portion 91b of the second sealing plate 92 provided on the blade 40 in the state in which the opening 21 is closed by the blade 40 The protrusions 92a overlap each other over a predetermined width and are in a superimposed state. The blade 40 can seal the opening 21 more reliably by the surface contact of the overlaid portion.

When the bolts 93 are used to install the sealing plates including the second sealing plate 92 on the blades 40 or the like, a bolt having a jaw 93a having a predetermined height as shown in Fig. It is possible to prevent the sealing performance of the sealing plates 91 and 92 from being deteriorated by preventing the sealing plates 91 and 92 from being partly excessively pressed and causing no bending.

When the louver 1 according to the present invention as described above is applied, the amount of air leakage inside and outside the structure is 1.0 CFM / ft ² or less in a state where the opening 21 is closed by the blade 40, which is extremely good.

1: louver 10 of the present invention: outer frame
20: partitioning frame 21; Opening
30: bearing 40: blade
41: Pivot shaft 50: Link mechanism
51: Lever 52; Interlocking rod
60: sealing device 61: strip spring
62: take-up roller 70: airflow guide
80: air flow resistance piece 91: first sealing plate
92: second sealing plate 91a. 92a:

Claims

In a retractable louver installed in a vent of a structure,
An outer frame (10) forming an overall outer frame;
A partition frame (20) for dividing the inner space of the outer frame (10) into a plurality of perforated openings (21);
A bearing 30 formed on the partition 21 so as to face the openings 21;
A blade (40) rotatably mounted on the bearing (30) and pivotable about the pivot shaft (41) to open and close the opening (21);
A link mechanism (50) for interlocking the opening and closing of the upper and lower blades (40);
An airtight mechanism (60) for applying an elastic force to the blade (40) to close the opening (21); And
Wherein a pressure of an air flow flowing from the inner side to the outer side through the opening (21) is formed on the upper part of the opening (21) so as to protrude outward from the partitioning mold (20) along the lower side of the opening (21) An airflow guide piece 70 which is further applied to the inner surface of the blade 40 and guides the blade 40 to be less attached to the outer surface of the blade 40 located under the opening 21; Lt; / RTI >
And the opening (21) is opened by the internal pressure of the raised structure so that the raised internal pressure is relieved, and when the raised internal pressure is released, the opening (21) is closed.

The method according to claim 1,
The blade 40 protrudes inward on the lower side of the inner surface of the blade 40 and the airflow flowing from the inner side to the outer side through the opening 21 collides to open the blade 40 located above the opening 21, (80) which receives pressure to the side of the louver.

3. The method according to claim 1 or 2,
Characterized in that the partitioning frame (20) is inclined to the outer frame (10) in a direction where the lower side is biased toward the outside so as to close the opening (21) before the blade (40) Retractable louvers.

3. The method according to claim 1 or 2,
A first sealing plate 91 installed in the partition frame 20 and surrounding the opening 21 so as to protrude to the opening 21 by a predetermined width and a second sealing plate 91 installed on the blade 40, And a second sealing plate (92) protruding from the first sealing plate (91) by a predetermined width around the protrusion (91a) of the first sealing plate (91) while the blade (40) Wherein the opening (21) is sealed by the blade (40) by the surface contact of the projected portion (92a) of the sealing plate (92).

3. The method according to claim 1 or 2,
One end of the sealing mechanism 60 is fixed to the lower end inside the blade 40 at the lowest position and the other end is fixed to the winding roller 62 provided at the corresponding outer frame 10 at the corresponding position A constant stiction spring 61 that applies an elastic force to the blade 40 to close the opening 21 and applies a certain elastic force to the blade 40 from the closed state to the fully opened state, Wherein the louver comprises: