KR102313725B1 - Thermally expandable foam gasket with heat resistance and damper for preventing fire comprising the same - Google Patents

Abstract

The present invention relates to a thermally expansible fireproof foam gasket and a fire damper comprising the same, wherein the fireproof foam gasket according to the present invention has one end bent and is fitted to a blade having a bent portion, and is in close contact with one surface of the bent portion of the blade. a first contact that becomes; In close contact with the other surface of the bent portion of the blade, the second contact portion is formed with a longer length than the first contact portion and is also in close contact with a portion of the body portion of the blade; including, wherein the first contact portion and the second contact portion are fire-resistant foam material There is a technical feature to be formed as, the fire damper according to the present invention is a blade having one end bent and a bent portion; and
a first contact portion in close contact with one surface of the bent portion of the blade; In close contact with the other surface of the bent portion of the blade, the second contact portion is formed with a longer length than the first contact portion and is also in close contact with a portion of the body of the blade; a fire-resistant foam gasket comprising a; including, the first contact portion and the first contact portion There is a technical feature in that the contact part is formed of a fireproof foam material.

Description

Fireproof foam gasket and fire damper comprising the same

The present invention expands when heated with high-temperature heat and can close the gap, and is installed in a foam gasket having heat resistance and a duct for air conditioning and ventilation facilities to automatically block the transfer of heat and gas in the event of a fire. It relates to a fire damper having a foam foam gasket.

The air conditioning and ventilation system discharges foreign substances to the outside in an environment sensitive to fine dust inside, such as a hot or cold fan for central heating and cooling of large buildings, or a facility that produces semiconductors and liquid crystal displays, to keep the indoor environment clean. including air conditioners to maintain

In general, air conditioning is an action of installing an air conditioning facility that can change air into various states in a machine room, and moving air necessary for each space through a duct using a blower, and the duct contains fluid. In order to properly control the flow of air, a so-called damper is installed that adjusts or blocks the airflow.

Specifically, the damper is an air control plate installed in the duct to control the amount of blown air. In the event of a fire, the duct can be a passage through which flames and smoke are transmitted to other spaces. to prevent the flame from spreading to other spaces through ducts in the event of a fire, and regulations are being strengthened to install fire dampers to prevent fires in buildings.

Existing fire dampers are divided into electric fire dampers and mechanical fire dampers according to the driving method. It is a device that operates to close the damper electrically by controlling the operation of the driving device when it is confirmed that it is higher.

A mechanical fire damper has a structure including an elastic body and a phase change fuse, and the damper is kept open by a solid-shaped fuse. It is a device that works as much as possible.

However, the existing electric fire damper needs to continuously supply power for fire prevention, and the cost of driving devices such as motors and sensors is high, so installation and maintenance costs are high, and in the case of existing mechanical fire dampers There is a problem in that the elastic body left for a long time is deformed and the damper cannot be closed airtightly, resulting in loss of fire protection function, and the installation method is difficult.

As a prior art related to a fire damper, Patent Document 1 (Title of the Invention: Damper for Ventilation Duct) discloses a technique for improving airtightness by widening the contact area of the sealing member to close the duct, and Patent Document 2 (Invention) (Name: Fire Damper for Offshore Structure) discloses a technology for performing an insulating function by installing an insulating material on a blade attached to the inside of the damper.

In the case of fire dampers disclosed in Patent Documents 1 and 2, when high-temperature fire is continuously transmitted to the damper during a fire, the blades are twisted and a gap is generated, which prevents airtight sealing, so that smoke caused by fire cannot be properly blocked.

In addition, the installation method is difficult, and when the damper is closed, there is a problem in that it is difficult to effectively block the noise generated by the contact between the opening and closing blades made of metal and the contact between the opening and closing blades and the stopper.

Korea Patent No. 0848358 (2008.07.24) Korean Patent Publication No. 2011-0134318 (2011.12.14)

The present invention has been devised to solve the problems of the prior art as described above. and a thermally expansible fireproof foam gasket to seal the gap between the stopper and the blade airtightly, and to block the movement of gas and smoke smoothly in case of a fire, as well as thermal expansion when heated by high temperature heat, such as in a fire, to more tightly close the gap; It is to provide a fire damper including the same.

The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description it could be

In order to achieve the technical problem as described above, the present invention provides a gasket 10 having one end bent and fitted to a blade having a bent portion, comprising: a first contact portion 11 that is in close contact with one surface of the bent portion of the blade; In close contact with the other surface of the bent portion of the blade, the second contact portion 12 is formed with a longer length than the first contact portion 11 and is also in close contact with a portion of the body portion of the blade; including, the first contact portion 11 And the second contact portion 12 provides a fire-resistant foam gasket, characterized in that formed of a fire-resistant foam material.

In the fire resistant foam gasket 10 according to the present invention, a fitting groove 14 is formed by the first contact portion 11 and the second contact portion 12, and the fitting groove 14 is a bent portion of one end of the blade. It is characterized in that it is fitted to the

The fire resistant foam gasket 10 according to the present invention is characterized in that the nipple 13 is formed in the connection portion connecting the first contact portion 11 and the second contact portion 12 .

According to another aspect of the present invention, one end is bent blade having a bent portion; and a first contact portion 11 that is in close contact with one surface of the bent portion of the blade; Doedoe in close contact with the other surface of the bent portion of the blade, the second contact portion 12 is formed to have a longer length than the first contact portion 11 and is also in close contact with a portion of the body of the blade; do,

It provides a fire damper (20), characterized in that the first contact portion (11) and the second contact portion (12) are formed of a fireproof foam material.

In the fire resistant foam gasket 10 according to another aspect of the present invention, the fire resistant foam material may include any one or more of coal ash, waste limestone, graphite, and calcium aluminate-based quick-setting agent. In addition, the graphite of the fireproof foam material is expanded graphite, and the expanded graphite is characterized in that it comprises a mixture of 100 parts by weight of sugar and 15 parts by weight of phosphoric acid.

According to the present invention, since a gasket is provided on one end of each blade and the blade positioned on the other side of the pair of stoppers, it is possible to block the noise generated by the contact between the blades and the blade and the stopper when the damper is closed, of course, By airtightly sealing between the blades and between the stopper and the blades, there is an effect that can smoothly block the movement of gas and smoke in the event of a fire.

Since the gasket fitted to one end of each blade is made of a fire-resistant foam material, high-temperature fire is continuously transmitted to the damper, and even if a gap occurs due to the blade twisting, the thermal expansion of the fire-resistant foam material has the effect of maintaining a closed state. .

In addition, the gasket is provided with a fitting groove so that it can be fitted to the blade, so it is convenient to install the gasket, as well as thermal expansion in the vicinity of the contact surface due to the second contact portion having a longer length than the first contact portion of the gasket, so that it is more effectively sealed. has the effect of maintaining

In addition, since a nipple is formed in the connection portion between the blade and the gasket, the sealing property can be effectively improved while narrowing the contact area.

Effects of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a fire resistant foam gasket according to the present invention.
2 is a plan view showing a fire resistant foam gasket according to the present invention.
3 is an exploded perspective view showing a state in which the fire resistant foam gasket according to the present invention is coupled to the blade provided in the fire damper.
4 to 6 are plan views showing a state in which the fire resistant foam gasket according to the present invention is coupled to the blade provided in the fire damper.
7 to 10 are plan views showing a fire damper provided with a fire resistant foam gasket according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component. When a component is referred to as being “connected” to another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, “between” and “immediately between” or “neighboring to” and “directly adjacent to”, etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the described feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Hereinafter, the present invention will be described in detail.

1 is a perspective view showing a fire resistant foam gasket according to the present invention, FIG. 2 is a plan view showing a fire resistant foam gasket according to the present invention, and FIG. 3 is a fire resistant foam gasket according to the present invention. 4 to 6 are plan views showing a state in which a fire resistant foam gasket according to the present invention is coupled to a blade provided in a fire damper, and FIGS. 7 to 10 are fire resistant foam gaskets according to an embodiment of the present invention It is a plan view showing the provided fire damper.

The fire resistant foam gasket 10 according to the present invention is defective at one end of each blade and the blade positioned on the other side of the pair of stoppers 40, so that when the damper 20 is closed, between the blades and the blade and the stopper 40 are in contact with each other. As well as being able to block the noise generated by the airtight sealing between the blades and the stopper 40 and the blades, it is configured to smoothly block the movement of gas and smoke in the event of a fire.

The fire resistant foam gasket 10 according to the present invention is provided inside the damper 20 having front and rear openings, and a central portion between both ends of the damper 20 is rotatably connected to the upper and lower portions of the damper 20. A plurality of blades are rotatably connected. The damper 20 is provided in the fire damper 20 including 30 and stoppers 40 connected to both inner side surfaces of the damper 20, and the plurality of blades 30 are opened by rotation. ) as a gasket 10 for hermetically sealing between the blades 30 or between the stopper 40 and the blade 30 by blocking the blade 30 , the blade 30 may be made of a metal material.

In general, large buildings and the like are provided with a duct that is an air blowing passage for air conditioning inside the building, and a fire damper for fire prevention or smoke prevention is installed in the duct.

The damper 20 preferably has a rectangular shape in which front and rear are open.

Here, the front and rear of the damper 20 form an open shape, but it goes without saying that the front and rear thereof may face up and down as well as both directions depending on the place of use or installation location.

The plurality of blades 30 have upper, lower, and both ends, respectively, and a central portion between the opposite ends is rotatably fixed to the upper and lower portions of the damper 20 . Since the form in which the blade 30 is rotatably connected to the damper 20 is already known and used, a detailed description thereof will be omitted.

The plurality of blades 30 may have a main body 33 and bent portions 31 and 32 protruding in opposite directions by bending at both ends of the main body 33 .

For example, as shown in FIG. 5 , the bent portions 31 and 32 form a '∨' or '∧' shape protruding forward and rearward from both ends of the blade 30 and the blade 30 . It may be configured to be symmetrical about the front and back, or to be symmetrical about the blade 30 while forming an upward convex shape or a downward convex shape.

As the bent portion protrudes forward or backward, a recessed space is formed in the opposite direction of the projection.

The plurality of blades 30 are disposed in the vertical direction inside the damper 20 as shown in FIGS. 7 to 10, and as shown in FIG. 7 as shown in FIG. As shown, the first and second bent portions overlap in the vertical direction between the adjacent blades 30 .

7 and 9 show an open state before the opening/closing means 50 is operated, and FIGS. 8 and 10 show a closed state after the opening/closing means 50 is operated.

As shown in FIGS. 7 and 9, the fire damper 20 is provided with an opening/closing means 50 including a control lever or a driving motor for opening and closing the plurality of blades 30, and is manually or automatically operated. The plurality of blades 30 may be opened and closed at the same time.

The stopper 40 is connected to upper and lower sides of the damper 20 as shown in FIGS. 7 and 9 , and one side is adjacent to the opening/closing blade positioned at the upper and lower sides of the plurality of blades 30 . .

And, as shown in FIG. 7 , as the plurality of blades 30 are closed vertically from an open state, the rotation is stopped while in contact with the blades 30 positioned above and below among the plurality of blades 30 . On the other hand, the gap between the blade 30 and the damper 20 is made to be airtight.

Here, the blades 30 positioned at upper and lower sides among the plurality of blades 30 may be understood as blades 30 adjacent to the upper and lower sides of the damper 20 .

The fireproof foam gasket 10 is made of a foamed incombustible material, and may be manufactured by an injection molding method. As shown in FIGS. 4 to 6 , it is fitted to the bent portion of each blade 30 . Accordingly, the fireproof foam gasket 10 blocks the noise generated by the contact between the blades 30 made of metal and between the blades 30 and the stopper 40 when the damper 20 is closed. Meanwhile, the airtight seal between the plurality of blades 30 and between the stopper 40 and the blade 30 ensures that the movement of gas and smoke is smoothly blocked in the event of a fire.

In addition, in the event of a fire, high-temperature fire is continuously transmitted to the damper 20, and the blade 30 is twisted to generate a gap. Even if a gap occurs, the gap between the plurality of blades 30 and between the stopper 40 and the blade 30 can be more tightly closed due to thermal expansion of the fireproof foam material.

The fireproof foam gasket 10 is made of a foaming non-heating material, and the foaming member has a non-flammable foaming agent as a main component and may be made of any one of cement, paper, and non-combustible fibers, or a mixture of two or more. The foam member is preferably foamed when the temperature of the flame reaches a temperature of 190°C to 300°C. As a material of the foam member, any one of expanded graphite, soft rubber, polystyrene or polyurethane, or a foamed incombustible material containing two or more is preferable, but is not necessarily limited thereto.

Polyurethane foam member (foam) is easy to manufacture, has excellent shock absorption and resilience, and can be produced in various products. Polyurethane foaming members are generally produced by reacting a liquid mixed with polyether polyol, polyester polyol, foam stabilizer, filler, curing catalyst, pigment, etc. and an aliphatic or aromatic isocyanate compound in the presence of a foaming member of water or gas component. have. In addition, when the polycarbonate polyol is introduced during the manufacture of the foam member, excellent stability can be maintained even at high temperatures for a long time. In addition, various additives may be used to impart flame retardancy and nonflammability to the polyurethane foam. The polyurethane foam can be used in 100 parts by weight of a polyurethane main material made by mixing 30 parts by weight of flexible polyurethane and 70 parts by weight of hard polyurethane, and coal ash, waste limestone, graphite, calcium aluminate-based quick-setting agent, etc. It can be used to make foam.

In the case of the graphite, expanded graphite is preferable, and the expanded graphite expands when a fire occurs and forms a heat insulating layer to prevent the spread of fire. Since there is a disadvantage that it cannot be formed, it is possible to further strengthen the fire resistance by adding caramel phosphate. In the case of the sugar caramel, it is more preferable that it is prepared by mixing 15 parts by weight of phosphoric acid with 100 parts by weight of sugar, which is a disaccharide. In this case, it is possible to prevent scattering of expanded graphite and suppress combustion. In addition, when prepared by mixing 15 parts by weight of phosphoric acid with 100 parts by weight of sugar, which is a disaccharide, it is possible to further improve shape retention performance.

The fire resistant foam gasket 10 is in close contact with the first contact portion 11 that is in close contact with one surface of the bent portion of the blade 30 and the other surface of the bent portion of the blade 30, the length longer than the first contact portion 11 . and a second contact portion 12 that is formed to be in close contact with a portion of the body portion of the blade 30 . The fire-resistant foam gasket 10 has one end bent and a fitting groove 14 is formed so that it can be fitted to the blade 30 having a bent portion, so that the coupling installation is convenient as well as the first contact portion of the gasket 10 . (11) Due to the second contact portion 12 formed with a longer length, thermal expansion occurs in the vicinity of the contact surface, so that the sealed state can be more effectively maintained. The fire resistant foam gasket 10 may be coupled to only one side of the bent portion of the blade 30 , and may be coupled to both sides of the bent portion of the blade 30 . When coupled to only one side, one surface of the bent portion of the fire-resistant foam gasket 10 and the blade 30 may have the same bent shape.

The bent portion of the blade 30 includes two bent portions, a first bent portion 31 and a second bent portion 32 at both ends of the blade 30, and the curved surfaces of the first and second bent portions at both ends are It may be symmetrical, or it may have a structure in which the curved surfaces are not the same. Even if the curved surface is not the same structure, one of the first bent part 31 or the second bent part 32 has the same curved shape as that of the fire resistant foam gasket 10, and the other surface has a circular or bent shape. can be

In addition, in the fire-resistant foam gasket 10 , a nipple 13 may be formed at a connection portion connecting the first contact portion 11 and the second contact portion 12 . The nipple 13 is formed to protrude in the shape of a nipple, and by this structure, the nipple 13 has a predetermined elastic force, and due to this elastic force, between the blades 30 or between the blade 30 and the stopper 40 It is possible to further reduce the noise due to the buffer action when in contact with the In addition, when the fire-resistant foam gasket 10 is expanded during a fire, airtightness can be further strengthened due to the spherical shape of the nipple 13 .

The fire-resistant foam gasket 10 may be coupled to the blade 30 by applying an adhesive or the like to the fitting groove 14 .

According to another aspect of the present invention, the blade 30 having one end bent and having a bent portion and a first contact portion 11 that is in close contact with one surface of the bent portion of the blade 30; Fireproof foam gasket comprising; a second contact portion 12 that is in close contact with the other surface of the bent portion of the blade 30 , is formed to have a longer length than the first contact portion 11 and is also in close contact with a portion of the body of the blade 30 ; (10); and, the first contact portion 11 and the second contact portion 12 may be provided with a fire damper 20, characterized in that formed of a fire-resistant foam material.

Various types of dampers may be used according to the shape and material of the fire damper of the present invention, and the fire resistant foam gasket of the present invention may be applied to dampers having a purpose such as fire prevention or smoke prevention. The fire damper of the present invention is preferably applied not only to a general fire damper but also to a smoke motorized damper and a motorized fire damper, but is not necessarily limited thereto.

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments in a way that is combined with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment, or may be included as new claims by amendment after filing.

10 : gasket
11: first contact part
12: second contact part
13 : nipple
14: fitting groove
20: damper
30: blade
31: first bent part
32: second bent part
33: body part
35: reinforcement blade
40: stopper
50: opening and closing means

Claims (6)

The body part 33 and the bent part 31 of one end of the blade 30 having bent parts 31 and 32 protruding in opposite directions by bending at both ends of the body part 33, respectively. In the gasket 10 to be fitted,
a first contact portion 11 in close contact with one surface of the bent portion 31 formed at one end of the blade;
A second contact portion 12 that is in close contact with the other surface of the bent portion 31 of the blade, is formed to have a longer length than the first contact portion 11 and is also in close contact with a portion of the body portion 33 of the blade; and ,
A fitting groove 14 is formed by the first contact portion 11 and the second contact portion 12,
The fitting groove 14 is fitted to the bent part of one end of the blade,
A nipple 13 is formed in the connection portion connecting the first contact portion 11 and the second contact portion 12,
The fire-resistant foam gasket, characterized in that the first contact portion (11) and the second contact portion (12) are formed of a fire-resistant foam material.
delete delete According to claim 1,
The fire resistant foam gasket, characterized in that it comprises at least one of coal ash, waste limestone, graphite, and calcium aluminate-based quick-setting agent.
5. The method of claim 4,
The graphite is expanded graphite, and the expanded graphite comprises a mixture of 100 parts by weight of sugar and 15 parts by weight of phosphoric acid.
a blade having a main body 33 and bent portions 31 and 32 protruding in opposite directions by bending at both ends of the main body 33; and
a first contact portion 11 in close contact with one surface of the bent portion 31 formed at one end of the blade;
A second contact portion 12 that is in close contact with the other surface of the bent portion 31 of the blade, is formed to have a longer length than the first contact portion 11 and is also in close contact with a portion of the body portion 33 of the blade; and , A fitting groove 14 is formed by the first contact portion 11 and the second contact portion 12, and the fitting groove 14 is fitted to the bent portion of one end of the blade, and the first contact portion ( 11) and a fireproof foam gasket 10 in which a nipple 13 is formed in a connection portion connecting the second contact portion 12;
The fire damper, characterized in that the first contact portion (11) and the second contact portion (12) are formed of a fireproof foam material.

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