KR101670171B1 - Damper for preventing fire and back flow - Google Patents

Damper for preventing fire and back flow Download PDF

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Publication number
KR101670171B1
KR101670171B1 KR1020150057655A KR20150057655A KR101670171B1 KR 101670171 B1 KR101670171 B1 KR 101670171B1 KR 1020150057655 A KR1020150057655 A KR 1020150057655A KR 20150057655 A KR20150057655 A KR 20150057655A KR 101670171 B1 KR101670171 B1 KR 101670171B1
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KR
South Korea
Prior art keywords
outlet
rim
flame retardant
damper
side housing
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Application number
KR1020150057655A
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Korean (ko)
Inventor
이수빈
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이수빈
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Priority to KR1020150057655A priority Critical patent/KR101670171B1/en
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Publication of KR101670171B1 publication Critical patent/KR101670171B1/en

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backflow preventive damper and, more particularly, to a backflow preventive damper for preventing contaminated air from entering the room from an exhaust shaft during normal operation and a fire preventing function for preventing a flame from spreading into another compartment The present invention relates to an apparatus for providing a damper having a hollow shape and having a lattice shaped cross section for allowing air to flow therethrough and a rim portion 120 surrounding the outer periphery of the vent portion 110, An expandable flame retardant material (100) which is expanded and solidified by expansion and contraction in an environment of; An inlet-side housing 200 having an opening 210 opened at a center thereof by being wrapped around the rim 120 of the expandable flame retardant 100; A cover 320 which is fixed to the rim portion 120 of the inflated flame retardant 100 by being wrapped around the opposite side of the inlet housing 200 and open at the center of the rim 310, And an outlet-side housing 300 that rotates by its own weight and closes the outlet 310. This makes it possible to keep the room in a pleasant state at all times, thereby improving the residential environment and increasing the safety against fire .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper for preventing fire flow,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backflow preventive damper and, more particularly, to a backflow preventive damper for preventing contaminated air from entering the room from an exhaust shaft during normal operation and an arcing function for preventing a flame from spreading to another partition The present invention relates to an apparatus for providing a damper with a built-in damper, which can keep a room in a comfortable state at all times, thereby improving a residential environment and increasing fire safety.

Generally, in the air conditioning field, a damper is an air regulating plate installed in a duct to regulate a blowing amount, and a duct damper is installed in a duct when the duct passes through a fire wall or a fire partition.

The fire damper is to prevent the flame from spreading to other compartments through the duct in case of fire, and it is divided into electric type and mechanical type according to the driving method.

The electric fire damper is provided with a temperature detection sensor and a drive device. When the temperature detected by the temperature detection sensor is higher than the set temperature, the damper is closed by electric power through a drive device such as a motor.

In addition, as disclosed in Korean Utility Model Application Publication No. 2011-7646, a mechanical type fire damper is provided with a fuse whose phase changes from a solid to a liquid under the influence of an elastic body and a high temperature. When the fuse melts due to high temperature, The damper, which has been kept open by the elastic member, is elastically closed.

However, in the case of the above-described conventional fire dampers, it is necessary to always supply electric power in the case of electric type, and has a disadvantage in that the production cost is increased by a motor, a temperature detection sensor, etc. In the case of a mechanical type, Plastic deformation is generated in the installed elastic body, and the restoring force is lowered, so that the damper can not be closed with high airtightness, and thus, the fire preventing function is lost.

In addition, such a fire damper basically does not have a backflow prevention function, so that contaminated air such as tobacco smoke or cooking which is to be exhausted through the exhaust shaft to the outside of the building will flow back to another generation, There was also a problem of doing.

Domestic public utility model publication No. 2011-7646

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide an air conditioner capable of always keeping a room in a comfortable state from contaminated air generated during smoke or cooking by effectively preventing contaminated air flowing backward through the exhaust shaft, The present invention provides a fire prevention damper for preventing backflow of a fire, which can prevent a flame from spreading to other compartments through a fire function, thereby enhancing fire safety.

The present invention relates to an expandable type of flame retardant which comprises a cylindrical air vent having a lattice-shaped cross section for air circulation and a rim surrounding the outer periphery of the air vent, and expanding and solidifying in a high temperature environment and solidifying; An inlet-side housing having a rim portion of the expandable flame retardant material wrapped around one side thereof and having an opening at the center thereof; And an outlet-side housing which is fixed at the rim of the inflated flame retardant material on the opposite side of the inlet-side housing, the outlet of which is open at the center, and the cover rotatably supported by the upper portion is rotated by its own weight to close the outlet .

At this time, the outlet formed in the outlet-side housing may be formed at a predetermined inclination angle with respect to the vertical plane.

In addition, it is preferable that the cover provided in the outlet-side housing has a flat rim and a curved portion is formed concavely at a diameter corresponding to the outlet at the center.

Preferably, the outer circumferential surfaces of the inlet housing and the outlet housing are connected to each other by connecting means.

Lastly, the backflow preventive damper of the present invention is provided in an exhaust passage between an exhaust duct in an exhaust shaft perpendicular to a room in a building, A forced exhaust port for forcibly discharging the indoor air through the rotation of the fan to the outside is provided at the entrance to the exhaust pipe; A rim inserted into an inner diameter of the exhaust pipe at an outlet of the exhaust pipe; A plurality of ribs radially connecting the center of the rim; It is most preferable that an auxiliary backflow preventing means composed of a resilient cover fixed to the front surface of two ribs arranged on a straight line of the rib is additionally provided.

As described above, the present invention effectively prevents contaminated air flowing through the exhaust shaft from flowing back into the room, thereby making it possible to always keep the room in a comfortable state from contaminated air generated during smoking or cooking, thereby improving the living environment On the other hand, it is possible to prevent the flame from spreading to other compartments through the fire function, thereby increasing the safety against fire.

1 is a perspective view showing a backflow preventing fire damper according to the present invention,
Fig. 2 is an exploded perspective view showing the anti-reverse flow damper of the present invention,
Fig. 3 is a perspective view showing a backflow preventing fire damper of the present invention provided with a cover of another example; Fig.
Fig. 4 is a view showing an example of the installation of the backflow-preventing fireproof damper of the present invention;
Fig. 5 is a sectional view showing an operational example of the anti-reverse flow damper of the present invention,
FIG. 6 is a perspective view showing the auxiliary backflow preventing means provided in the backflow preventing damper of the present invention,
7 is a sectional view showing the operating state of the auxiliary backflow preventing means provided in the backflow preventing fire damper of the present invention,
8 is an enlarged view of a portion A in Fig. 5; Fig.

2 is an exploded perspective view showing a backflow preventing fire damper according to the present invention. FIG. 3 is a perspective view showing a backflow preventing fire damper of the present invention, .

FIG. 4 is a sectional view showing an example of the operation of the backflow prevention fire prevention damper of the present invention. FIG.

5 (a) shows a closed state of the cover 320, and FIG. 5 (b) shows an open state of the cover 320. FIG.

FIG. 6 is a perspective view showing auxiliary backflow preventing means provided in the backflow preventing fire damper of the present invention, and FIG. 7 is a sectional view showing the operating state of the auxiliary backflow preventing means provided in the backflow preventing fire damper of the present invention .

7 (a) shows the closed state of the auxiliary backflow prevention means 600, and Fig. 7 (b) shows the opened state of the auxiliary backflow prevention means 600. Fig.

Finally, FIG. 8 is an enlarged view of portion A of FIG.

As shown in FIGS. 1 to 8, the backflow preventive damper of the present invention has a backflow preventing function by a cover 320 that maintains its closed state by its own weight in a normal state, Type flame retardant 100 can prevent the flame from spreading to other compartments by expansion and expansion during the fire.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the backflow preventive damper of the present invention includes a cylindrical ventilation part 110 having a lattice-shaped cross section through which air can flow, a rim part 120 surrounding the outer periphery of the ventilation part 110 An expandable flame retardant material 100 made of a thermoplastic elastomer material and foamed and expanded in a high temperature environment and solidified; An inlet-side housing 200 having an opening 210 opened at a center thereof by being wrapped around the rim 120 of the expandable flame retardant 100; A cover 320 which is fixed to the rim portion 120 of the inflated flame retardant 100 by being wrapped around the opposite side of the inlet housing 200 and open at the center of the rim 310, And an outlet-side housing 300 which rotates by its own weight to close the outlet 310. [

1 and 2, the backflow preventive damper of the present invention is mainly composed of an expandable type flame retardant material 100 and two housings 200 and 300 that surround the front and back of the expandable type flame retardant material 100 have.

The expanded flame retardant material 100 is a polymeric compound that when expanded to a high temperature heat source expands and expands at several tens times its initial volume to form a carbonized foam layer and solidifies to thereby perform an adiabatic action.

The expandable flame retardant material 100 is preferably a halogen-free material rather than a halogen-based material in consideration of environmental problems, and has an advantage of good moldability because it is relatively flexible.

Particularly, in the present invention, the expandable flame retardant 100 is preferably divided into two parts as shown in FIG.

That is, the expandable type flame retardant material 100 may include a cylindrical air vent 110 having a lattice-shaped cross section through which air can flow, and a rim portion 120 surrounding the outer periphery of the vent portion 110.

When the ventilation portion 110 is manufactured using the expandable type flame retardant 100, the expandable type flame retardant 100 has a high flexibility. Therefore, the expandable type flame retardant 100 is cut into a plate having a predetermined thickness After that, it is preferable to manufacture the inflated flame retardant 100 with a rigid structure by holding the inflated flame retardant 100 cut with a thin synthetic resin 111 as shown in Fig.

At this time, the shape of the vent portion 110 is a grid shape in which air can smoothly flow, and the shape of the vent portion 110 is not limited.

However, it is preferable that the rim portion 120 surrounding the outer periphery of the ventilation portion 110 surrounds the outer periphery of the ventilation portion 110 directly without requiring rigidity to the expanded type flame retardant material 100 as described above will be.

As shown in FIG. 5, since the rim 120 is located in the housing 200 (300) to be described later, it is not necessary to provide rigidity separately.

That is, the rim 120 is intended to add a larger amount of the expandable flame retardant 100.

According to this configuration, the inflated flame retardant 100 can flow air through the vent 110, and the edge 120 surrounds the periphery of the vent 110.

2, the inlet housing 200 provided at one side of the expandable flame retardant 100 may have a substantially A-shaped cross section at the rim 120 of the expandable flame retardant 100 as shown in FIG. The inlet 210 is opened so that air can smoothly pass through the center.

The inlet-side housing 200 may be made of a metal material so as to protect the inflated flame retardant 100.

Finally, the outlet-side housing 300 provided on the other side of the expandable flame retardant 100 may also be wrapped around the rim 120 of the expandable flame retardant material 100 with a substantially " , And an outlet (310) is opened at the center thereof so that air can smoothly pass through.

That is, if the inlet-side housing 200 is provided on one side of the inflated flame retardant 100, the outlet-side housing 300 is provided on the opposite side.

The outlet-side housing 300 is formed in a shape different from that of the inlet-side housing 200 described above, and is characterized in that a cover 320 is provided in particular.

In this way, the cover 320 provided at the outlet side housing 300 is rotatably hinged to the outlet side housing 300 so that when the pressure does not act, Thereby closing the outlet 310.

Accordingly, when a positive pressure acts on the inside of the cover 320 or a negative pressure acts on the outside of the cover 320, the cover 320 is opened by itself.

At this time, the outlet 310 may be vertically formed in the outlet-side housing 300, but more preferably, the outlet 310 formed in the outlet-side housing 300 may be formed as shown in FIG. It may be formed at a predetermined inclination angle.

For example, when the outlet 310 is vertically formed, there is a possibility that a fine clearance may occur with the cover 320 closing the outlet 310.

However, when the outlet 310 is inclined, the cover 320 has the effect of more reliably closing the outlet 310 by its own weight.

3 and 5, the cover 320 provided on the outlet-side housing 300 has a flat rim. In addition, the cover 320 may be formed as a flat plate, And a curved portion 322 may be formed at the center thereof so as to be concave with a diameter corresponding to the outlet 310.

When the curved portion 322 is formed, the curved portion 322 is positioned in the outlet 310 when the cover 320 is closed, so that the airtightness of the cover 320 is improved, And also serves as a guide vane for smoothly guiding the air discharged to the outside of the room by the curved portion 322. In addition,

The inlet-side housing 200 and the outlet-side housing 300 may be resiliently assembled by covering the inflated flame retardant 100 with appropriate dimensions. However, the inlet-side housing 200 and the outlet- The outer circumferential surfaces of the outlet side housing 300 are preferably assembled so as to be connected to each other by connecting means (not shown).

At this time, the connecting means may be an adhesive tape wrapped around the inlet housing 200 and the outlet housing 300.

The backflow preventive damper 10 of the present invention constructed as described above has an exhaust passage 30 between the exhaust ducts 21 in the exhaust shaft 20 perpendicular to the room in the building, As shown in FIG.

That is, it is preferable that the exhaust duct 21 is vertically disposed in an exhaust shaft 20 formed vertically to the building, and the end of the exhaust duct 30 is positioned upward in the exhaust duct 21 .

In addition, as shown in FIG. 4, the inlet of the exhaust pipe 30 is provided with a forced exhaust port 500 for forcibly discharging the indoor air through the rotation of the fan, As shown in FIGS. 6 and 7, a rim 610 is inserted into an inner diameter of the exhaust pipe 30 at an outlet of the exhaust pipe 30. A plurality of ribs 620 radially connecting the center of the rim 610; It is most preferable that an auxiliary backflow prevention means 600 composed of a resilient cover 630 fixed to the entire surface of two ribs 620 arranged on a straight line of the ribs 620 is further provided.

That is, the forced exhaust port 500 can be a wall surface of a space where contaminated air is generated, such as a bathroom or a kitchen, but is preferably installed on a ceiling. The fan is rotated through a driving source such as a motor, And forcedly discharged by the exhaust duct (21) in the shaft (20).

The elastic back cover 630 is supported on two straight ribs 620 among the six ribs in the drawing so that the contaminated air in the room can be exhausted to the exhaust ducts 21 in the exhaust shaft 20 7 (b), the resilient cover 630 is resiliently opened as shown in Fig. 7 (b). However, when the contaminated air in the exhaust shaft 20 tries to flow back into the room, The elastic cover 630 is supported and closed by the rib 620 and the rim 610 as shown in FIG.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 1 to 8. FIG.

The backflow preventive damper of the present invention is provided in the middle of the exhaust pipe passage 30 connecting the room and the exhaust duct 21 in the exhaust shaft 20.

At this time, when a positive pressure is applied from the indoor side to the backflow-preventing fire-fighting damper or a negative pressure is applied from the side of the exhaust shaft 20, the cover 320, which has closed the outlet 310 by its own weight, So that the contaminated air in the room is discharged to the exhaust duct 21 in the exhaust shaft 20. [

5 (a), the cover 320 provided on the outlet side housing 300 may be opened or closed when no pressure acts on the cover 320 or a positive pressure is applied from the exhaust shaft 20 side. It is possible to effectively prevent the contaminated air discharged through the exhaust duct 21 in the exhaust shaft 20 from flowing back into the room.

At this time, if the curved portion 322 is formed in the cover 320, it is possible to prevent the cover 320 from flowing in a closed state and to maintain a higher airtightness. In the opened state, And the function of the guide vane.

In addition, if the forced exhaust port 500 is provided at the entrance of the exhaust pipe 30, a forced positive pressure may be generated on the indoor side of the reverse-flow preventing damper of the present invention in accordance with the fan rotation of the forced exhaust port 500 It becomes possible.

When the auxiliary backflow prevention means 600 is provided at the outlet of the exhaust pipe 30, the air flowed from the exhaust shaft 20 to the room together with the backflow preventing fire damper of the present invention, And serves to more reliably prevent reverse flow.

When the indoor hot air influences the expandable flame retardant material 100 at a high temperature, the expansion type flame retardant material 100 composed of the ventilation portion 110 and the rim portion 120 is heated several tens times For example, by shutting off the inside of the exhaust passage 30 shown in Fig. 4 by effectively preventing the flame from spreading to other compartments by blocking the inside of the exhaust passage 30 of Fig. 4, Function.

Therefore, the backflow preventive damper of the present invention has both the backflow prevention function and the arrester function in a simple structure, and effectively prevents the backflow of the contaminated air of the exhaust shaft 20 to the room, This spreading to other compartments is also an invention with an excellent advantage of being able to prevent it.

The above embodiment is an example for explaining the technical idea of the present invention specifically, and the scope of the present invention is not limited to the above-mentioned drawings or embodiments.

100: Expansion type flame retardant material 110:
120: rim 200: inlet side housing
210: inlet 300: outlet side housing
310: outlet 320: cover
322: Bend 500: Forced exhaust
600: auxiliary backflow prevention means 610: rim
620: rib 630: elastic cover
10: anti-backflow prevention damper 20: exhaust shaft
21: exhaust duct 30: exhaust pipe

Claims (5)

delete delete An expandable type of flame retardant composed of a cylindrical vent portion having a lattice-shaped cross section for air circulation and a rim surrounding the outer periphery of the vent portion and expanding and solidifying under a high temperature environment;
An inlet-side housing having a rim portion of the expandable flame retardant material wrapped around one side thereof and having an opening at the center thereof;
And an outlet-side housing which is fixed to the rim of the inflated flame retardant material on the opposite side of the inlet-side housing, the outlet of which is open at its center and whose upper portion is rotatably supported by its own weight to close the outlet ;
The outlet formed in the outlet-side housing is formed at a predetermined inclination angle with respect to a vertical plane;
Wherein the cover provided on the outlet side housing has a flat rim and a curved portion is formed concavely at a center thereof with a diameter corresponding to the outlet.
4. The anti-reverse flow damper according to claim 3, wherein the outer circumferential surfaces of the inlet housing and the outlet housing are assembled to each other by connecting means.
5. The air conditioner according to claim 4, wherein the damper is provided in an exhaust pipe between an exhaust duct in an exhaust shaft perpendicular to a room in a building,
A forced exhaust port for forcibly discharging the indoor air through the rotation of the fan to the outside is provided at the entrance to the exhaust pipe;
A rim inserted into an inner diameter of the exhaust pipe at an outlet of the exhaust pipe; A plurality of ribs radially connecting the center of the rim; Further comprising an auxiliary backflow preventing means comprising an elastic cover fixed to the front surface of two ribs arranged on a straight line of the ribs.
KR1020150057655A 2015-04-24 2015-04-24 Damper for preventing fire and back flow KR101670171B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102046909B1 (en) * 2019-04-24 2019-11-21 양세연 Damper structure for air circulator
WO2022265462A1 (en) * 2021-06-18 2022-12-22 주식회사 국일인토트 Fire-resistant filler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007054617A (en) * 2005-07-29 2007-03-08 Sekisui Chem Co Ltd Fire damper device
KR200440947Y1 (en) * 2007-11-22 2008-07-10 주식회사 제일테크 Coupling pipe for diverging pipe in exhaust duct
KR20110007646A (en) 2009-07-17 2011-01-25 오정석 The bicycle keeper with locking structure
KR20110007646U (en) * 2010-01-26 2011-08-03 (주)디.에스.인더스트리 A fire prevention damper for air duct
KR200459346Y1 (en) * 2009-12-11 2012-03-23 주식회사 삼원이.엔.지 Damper for the prevention of back draft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007054617A (en) * 2005-07-29 2007-03-08 Sekisui Chem Co Ltd Fire damper device
KR200440947Y1 (en) * 2007-11-22 2008-07-10 주식회사 제일테크 Coupling pipe for diverging pipe in exhaust duct
KR20110007646A (en) 2009-07-17 2011-01-25 오정석 The bicycle keeper with locking structure
KR200459346Y1 (en) * 2009-12-11 2012-03-23 주식회사 삼원이.엔.지 Damper for the prevention of back draft
KR20110007646U (en) * 2010-01-26 2011-08-03 (주)디.에스.인더스트리 A fire prevention damper for air duct

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102046909B1 (en) * 2019-04-24 2019-11-21 양세연 Damper structure for air circulator
WO2022265462A1 (en) * 2021-06-18 2022-12-22 주식회사 국일인토트 Fire-resistant filler

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