KR20210001363A - Damper for duct - Google Patents

Abstract

The present invention relates to a damper for a duct. More specifically, the damper for a duct has a blocking plate made of a flexible material. The damper for a duct has a structure to enable the blocking plate to be easily coupled and disassembled, so that the damper can be easily manufactured, cleaned, maintained, and repaired. The damper has a simple structure of inserting a coupling protrusion formed on the blocking plate to a coupling hole formed in a mounting frame of a housing to be easily assembled, maintained, and repaired.

Description

Damper for duct{DAMPER FOR DUCT}

The present invention relates to a damper for a duct, and more specifically, in a damper for a duct in which the blocking plate is made of a soft material, it facilitates the coupling and disassembly of the blocking plate to facilitate not only manufacturing of the damper, but also cleaning and maintenance. It relates to a damper for a duct of a structure that can be.

In general, ventilation is performed to maintain a pleasant indoor environment by exhausting carbon dioxide, contaminated air, and odors generated in the internal space of a building to the outside.

Ventilation includes natural ventilation by opening a window and mechanical ventilation to operate a ventilation system such as a blower or a ventilator.

The ventilation system is mainly installed in a way that is buried in the ceiling of the building, and the main purpose is ventilation of air in each room, living room, and kitchen, and ventilation of moisture in the bathroom.

When the ventilation system is operated, air may move in the opposite direction rather than in the direction according to the purpose. At this time, dust accumulated in the duct may enter the room, and harmful air such as cigarette smoke generated by other households. May flow into the room through the duct.

Therefore, a damper is installed inside the duct to prevent the air from moving in the reverse direction.

Conventional dampers are not only difficult to manufacture because they have been combined and disassembled by applying a complex fastening method to drive the blocking plate, and have disadvantages of frequent failures.If cleaning and maintenance are required due to a complex structure, it is necessary to ask an expert. For this reason, the inconvenience of use is constantly occurring.

In addition, noise is generated when the steel blocking plate contacts the hatch and the protrusion of the damper.

Therefore, in order to solve this problem, the inventors of the present invention have proposed a damper for a duct using a blocking plate of a soft film and applying a simple coupling structure.

In other words, an invention was proposed in which a coupling protrusion is formed in the blocking plate seating portion of the housing, a coupling hole is formed in the blocking plate, and the coupling protrusion is inserted into the coupling hole, and then the blocking plate is coupled by covering it with a fixing bar. When inserting the coupling protrusion, it is troublesome to use a jig to accurately position it, and when the fixing bar is covered in a state that is not seated in the correct position, damage to the blocking plate, such as a soft blocking film, occurs.

10-2019-0063550

The present invention has been conceived to solve the problems of the prior art, and the present invention has an object to provide a structure in which a blocking plate can be easily coupled to a housing.

In order to achieve the above object, the damper for a duct of the present invention includes: a housing installed to be ventilated inside the duct, a blocking unit positioned inside the housing to inflow or block air into the housing, and the blocking unit Consisting of including a shape-maintaining member for maintaining the shape, the housing, a housing body having a space formed therein and passing through the upper and lower ends, and a seating frame formed inside the housing body and on which the blocking part is seated , Comprising one or more coupling grooves formed in the seating frame.

The blocking portion comprises a plate-shaped blocking plate made of a soft material and at least one engaging protrusion formed on a lower side of the blocking plate, formed at a position corresponding to the engaging groove, and fitted into the engaging groove. In order to impart rigidity to the center line portion of the blocking plate, the shape-holding member is provided in a straight line along the direction of the center line of the blocking plate on both sides spaced apart from the center line of the blocking plate by a predetermined interval in the horizontal direction. And a bar-shaped center bar providing a reference axis on which the blocking plate is bent, and a support bar extending from the center bar and integrally connected to an end of the blocking plate to suppress shape deformation of the blocking plate, and the support bar Is characterized in that it is composed of one or more ribs extending to the end of the blocking plate starting from a point on each of the center bar.

The coupling protrusion includes a first section of a coupling protrusion that connects to the lower end of the blocking plate and protrudes with a certain width, and a second section of the coupling protrusion that is connected to the first section of the coupling protrusion and protrudes in a reduced width. And, after passing the coupling protrusion second section into the inside of the coupling groove, pulling a portion of the coupling protrusion second section partially exposed to the lower side of the seating frame, the blocking part is in close contact with the seating frame. It is characterized by letting.

The blocking plate is characterized in that it further comprises one or more pressing portions on the upper side of the blocking plate to reinforce the strength of the blocking plate by reinforcing the thickness at a position corresponding to the formation portion of the coupling protrusion.

The blocking plate is characterized in that it further comprises a pressing portion for reinforcing the strength of the blocking plate by reinforcing the thickness in a straight line along the formation portion of the coupling protrusion on the upper side of the blocking plate.

The present invention has a simple structure in which the coupling protrusion formed on the blocking plate is inserted into the coupling hole formed in the seating frame of the housing, so that assembly and maintenance are easy.

1 is a perspective view of a damper for a duct according to an embodiment of the present invention.
2 is an exploded view of a damper for a duct according to an embodiment of the present invention.
3 is a cross-sectional view of a damper for a duct according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing the coupling step of the damper for a duct according to an embodiment of the present invention.
5 is a perspective view showing an upper portion of a blocking plate of a damper for a duct according to an embodiment of the present invention
6 is a perspective view showing the lower side of the blocking plate of the damper for a duct according to an embodiment of the present invention.
Figure 7 is a perspective view showing the lower side of the blocking plate of the damper for a duct according to an embodiment of the present invention.
Figure 8 is a perspective view showing the lower side of the blocking plate of the damper for the duct according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying exemplary drawings. In describing the present invention, descriptions of functions or configurations already known will be omitted in order to clarify the subject matter of the present invention. In addition, the same reference numerals denote the same elements throughout the specification.

Referring to FIG. 1, the damper 1 for a duct according to the present invention includes a housing 10 and a blocking part 20.

The housing 10 is a component installed inside the duct, and has a form in which a space is formed and the top and bottom are penetrated.

Accordingly, the contaminated air in the room moves to the outside through the upper and lower ends of the housing 10.

It is preferable that the housing 10 has a cylindrical shape as a whole, but may have various shapes such as a square or a polygon depending on the shape of the duct.

The blocking part 20 is located inside the housing 10 and serves to block air inflow and discharge into the housing 10.

As shown in FIGS. 2 to 3, the housing 10 includes a housing body 11 forming an overall outer shape, and a seating frame formed in a straight line at a position where the inner penetration portion of the housing body 11 is divided into half. (12), a plurality of coupling grooves 13 formed in the seating frame 12, and an auxiliary frame 14 connected in a mesh shape toward the inner surface of the housing body 11 from both sides of the seating frame 12 .

The seating frame 12 and the auxiliary frame 14 serve to seat the blocking portion 20.

Although the shape of the auxiliary frame 14 can be variously changed as needed. It is preferable that a portion protruding along the inner edge of the housing body 11 so that the edge portion of the blocking portion 20 is seated is essentially included.

Therefore, since the blocking part 20 is supported by the seating frame 12 and the auxiliary frame 14, movement from the inside of the housing body 11 toward the lower side of the seating frame 12 and the auxiliary frame 14 is restricted. do.

The seating frame 12 and the auxiliary frame 14 are formed in a shape inclined at a predetermined angle inside the housing body 11. Therefore, the blocking part 20 is also mounted in an inclined form inside the housing body 11.

In detail, the distance between one end of the mounting frame 12 in contact with the housing body 11 and the upper surface 11-1 of the housing body 11 is the other of the mounting frame 12 in contact with the housing body 11. The inclined shape is formed by making it larger than the distance between the end and the upper surface 11-1 of the housing body 11.

Therefore, the auxiliary frame 14 that continues along both sides of the seating frame 12 is also formed on the same plane as the seating frame 11 and thus has a shape inclined with the same inclination.

This structure is to allow the blocking portion 20 to be naturally seated on the seating frame 12 and the seating frame 11 by its own weight when the flow of the fluid flowing inside the housing 10 does not occur.

That is, when air flows from the inside of the housing 10 toward the upper surface of the housing body 11 for ventilation, both sides except for the part fixed to the seating frame 12 of the blocking part 20 Is bent in a direction away from the upper surface of the auxiliary frame 14 so that air can flow smoothly, and when the air flow in the housing 10 is terminated, the bent blocking unit 20 is After moving in the direction toward the auxiliary frame 14, it is in close contact with the auxiliary frame 14 to block the inflow of air.

The blocking portion 20 includes a thin plate-shaped blocking plate 21, a shape-holding member 22 formed on the upper side of the blocking plate 21 and symmetrically formed on both sides with respect to the central axis, and the blocking plate 21 ), a plurality of coupling protrusions 24 formed at a position corresponding to the coupling hole 13 of the housing 10, and corresponding to the formation portion of the coupling protrusion 24 on the upper side of the blocking plate 21 It consists of a pressing portion 23 formed in the position.

The blocking part 20 is preferably made of a membrane film formed of a soft material having soft properties such as silicone and rubber.

The shape holding member 22 is made of a center bar 22a and a support bar 22b that are integrally molded with the blocking plate 21.

The center bar 22a is a component that provides a reference axis RA through which the blocking plate 21 is bent, and is formed at a portion spaced apart from the center line CL of the blocking plate 21 at predetermined intervals in both horizontal directions. That is, the center bar 22a is symmetrically formed on both sides of the center line CL, and is formed to protrude long in the form of a straight bar having a predetermined width in parallel with the center line CL.

Accordingly, the center bar 22a supports a portion of the upper side of the blocking plate 21 along the longitudinal direction.

Accordingly, the blocking plate 21 maintains the shape of the portion where the center bar 22a is formed and the portion of the center line CL that is seated on the seating frame 12, and the soft portion therebetween is bent.

That is, the blocking portion 20 is bent along the reference axis RA by the formation of the center bar 22a.

The support bar 22b is a component that partially supports the shape of the blocking plate 21, and a plurality of ribs extend from the center bar 22a to protrude to the edge of the blocking plate 21.

That is, the support bar 22b includes two straight bar-shaped ribs extending from both ends of the center bar 22a to the edge ends of the blocking plate 21, and a point between both ends of the center bar 22a. It is formed including a straight bar-shaped rib extending from, and the plurality of ribs has a shape extending radially straight from the center bar 22a.

The position, shape, and quantity of the support bar 22b may be changed as necessary.

At this time, the ribs are formed to protrude radially and effectively support a portion of the surface so that the shape of the blocking plate 21 is not easily deformed.

That is, the shape-holding member 22 bends both sides of the blocking plate 21 with the center bar 22a as the reference axis RA, and the support bar 22b is the blocking plate 21 at the center bar 22a. Since it is formed in a plate shape that extends to the end of the barrier plate 21 to suppress deformation of the barrier plate 21, a part of the barrier plate 21 is bent and fluttered by the flow of fluid, blocking the Karman vortex phenomenon. It prevents the generation of noise.

If necessary, the shape and thickness of the shape holding member 22 may be changed within a structure in which the shape of the blocking plate 21 does not change.

The pressing part 23 is for responding to the force applied to the upper side of the blocking plate 21 when the coupling protrusion 24 is inserted into the coupling hole 13 of the housing 10, and the coupling protrusion 24 and It is formed to reinforce the strength of the blocking plate 21 at the facing position.

It is preferable that the size of the coupling protrusion 24 of the blocking part 20 is larger than the size of the coupling hole 13 of the housing 10 so that the coupling protrusion 24 does not easily come off the coupling hole 13. .

If necessary, a locking portion may be formed on the coupling protrusion 24 so that the locking portion is caught on the lower surface of the mounting frame 12.

4 shows a sequence of inserting the blocking part 20 into the housing 10.

Referring to FIG. 4A, the coupling protrusion 24 is connected to the lower end of the blocking plate 21 and is connected to the coupling protrusion first section 24a having a cylindrical shape, and the coupling protrusion first section 24a. It consists of a second section (24b) of the coupling protrusion having a shape that gradually decreases in width.

It is possible to assemble more easily by using the shape of the coupling protrusion 24.

As shown in Figure 4b, after easily first inserting the second section (24b) of the coupling protrusion having a narrow width into the coupling groove (13), the coupling protrusion (24) partially exposed to the lower side of the seating frame (12) The blocking part 20 can be brought into close contact with the seating frame 12 and the auxiliary frame 14 by pulling the end of the end part using a hand or tool.

That is, the coupling protrusion 24 of the soft blocking portion 20 increases in length due to elasticity when pulled from the lower side and at the same time narrows the width so that it can easily pass through the coupling groove 13 and remove the pulling force from the lower side. Then, the lengthened length is restored to its original state, and at the same time, it returns to its original width and is completely in close contact with the interior of the coupling groove 13.

The coupling protrusion second section (24b) is a sufficient length to be exposed to the lower side of the seating frame 12 when the coupling protrusion 24 of the blocking portion 20 is firstly inserted into the coupling groove 13 of the housing 10 It is preferable to have.

Referring to FIG. 5, a plurality of pressing portions 23 may be connected in a straight line to form one.

In the case of using the straight pressing part 23, the coupling can be performed by applying a force to one pressing part 23 as a whole without pressing each of the pressing parts 23.

As shown in Figures 6 to 8, the coupling protrusion 24 can be changed into various shapes.

As shown in Fig. 6, it is possible to form the coupling protrusion 24 in a straight line without applying the coupling protrusion second section 24b to the cylindrical coupling protrusion 24.

In Fig. 7a, a rectangular coupling protrusion 24 is shown. The quadrangular coupling protrusion 24 includes a first section 24a of a coupling protrusion having a square column shape, and a second section 24b of a coupling protrusion whose width narrows toward the bottom.

In addition, FIG. 7B shows a coupling protrusion 24 having a rectangular column shape as a whole in which a section whose width is narrowed is not formed.

Fig. 8a shows an elliptical coupling protrusion 24. The elliptical coupling protrusion 24 is composed of an elliptical column-shaped coupling protrusion first section 24a and a coupling protrusion second section 24b whose width narrows toward the bottom.

In addition, FIG. 8B shows a coupling protrusion 24 having an elliptical column shape as a whole in which a section whose width is narrowed is not formed.

It is preferable that the shape of the coupling hole 13 is also changed according to the shape of the coupling protrusion 24.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can.

1: duct damper, 10: housing, 11: housing body,
11-1: upper side of the housing body, 12: mounting frame, 13: coupling hole,
14: auxiliary frame, 20: blocking part, 21: blocking plate,
22: shape holding member, 23: pressing part, 24: coupling protrusion,
24a: coupling protrusion first section, 24b: coupling protrusion second section.

Claims (4)

A housing installed to be ventilated inside the duct;
A blocking part located inside the housing to introduce or block air into the housing;
Containing a shape holding member for maintaining the shape of the blocking portion,

The housing,
A housing body having a space formed therein and passing through the upper and lower ends;
A seating frame formed inside the housing body and on which the blocking portion is seated;
Consists of including; one or more coupling grooves formed in the seating frame,

The blocking unit,
A plate-shaped barrier made of a soft material;
And one or more coupling protrusions formed on the lower side of the blocking plate, formed at a position corresponding to the coupling groove, and fitted into the coupling groove, and

The shape holding member,
In order to impart rigidity to the center line portion of the blocking plate,
A bar-shaped center bar provided at both sides spaced apart from the center line of the blocking plate by a predetermined interval in the horizontal direction in a linear shape along the center line direction of the blocking plate to provide a reference axis on which the blocking plate is bent; And a support bar extending from the center bar and integrally connected to the end of the blocking plate to suppress shape deformation of the blocking plate,

The support bar,
One or more ribs connected to each of the center bars and extending to the ends of the blocking plate; duct damper, characterized in that consisting of. The method of claim 1,
The coupling protrusion,
A first section connecting protrusions connected to the lower end of the blocking plate and protruding with a certain width; And,
Consisting of including a second section of the coupling protrusion that is connected to the first section of the coupling protrusion and protrudes in a form of reducing its width,

After passing the second section of the coupling protrusion into the inside of the coupling groove,
The damper for a duct, characterized in that by pulling a portion of the second section of the coupling protrusion partially exposed to the lower side of the seating frame to make the blocking portion in close contact with the seating frame. The method of claim 1,
The blocking plate,
And one or more pressing portions on the upper side of the blocking plate to reinforce the strength of the blocking plate by reinforcing the thickness at a position corresponding to the formation portion of the coupling protrusion. The method of claim 1,
The blocking plate,
A damper for a duct, characterized in that it further comprises a pressing portion on the upper side of the blocking plate to reinforce the strength of the blocking plate by reinforcing the thickness in a straight line along the formation portion of the coupling protrusion.

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