KR20090083562A - Cut-off apparatus for building duct - Google Patents

Abstract

A cut-off apparatus for a building duct is provided to maintain sealed state in opening and suppress the change of air volume in opening. A cut-off apparatus for a building duct comprises a cylindrical body(110), inner and outer shafts, a remote control driving unit(140), a manual handle unit, and a rotating cam, a cylinder guide, a cylinder, a cylinder cover(200), and a blocking plate(210). The ducts are communicated to the body. The inner shaft vertically passes through the body. The outer shaft rotates along the inner shaft. The driving unit and the handle unit rotate the inner shaft. The rotating cam is fixed in the inner shaft in which the lower end of the outer shaft is positioned. The cylinder guide comprises a slot and a guide hole. The slot which accepts the rotating cam is horizontally formed. The guide hole is connected to the slot. A part of the cylinder is inserted into the guide hole. The cylinder is contacted with the rotating cam. The cylinder is elastically supported with the outer spring. The cylinder cover accepts the rest outer part of cylinder and the spring. The blocking plate is expanded to outside.

Description

Cut-off apparatus for building duct}

The present invention relates to a blocking device for a building duct, and more particularly, to a building duct blocking device installed between a duct and a duct installed in a ventilation facility or an air conditioning facility of a building to control air flow by a simple operation.

In general, a ventilation or air conditioning facility of a building is provided with a duct for introducing fresh air from outside or blowing harmful air to the outside of the building, and the duct is provided with a blocking device for controlling or blocking the flow of air. Is installed.

Such a duct blocking device is installed between a duct and a duct such as a ventilation facility, an air conditioning facility, a chemical protection facility installed in a building, and rotates the handle manually to rotate the rotating shaft and the blocking plate so that the blocking plate is perpendicular to the body of the blocking device. When it is open, when it is horizontal, it is closed and it is comprised so that the air in a duct may be cut off.

1A and 1B are partially cutaway perspective views and cross-sectional views of a conventional duct blocker, in order to block the flow of air in a state in which the blocker 10 is connected between a duct and a duct not shown, the handle 12 Pull the stopper 12a outward and then rotate the handle 12 to rotate the outer shaft 14 connected to the inner shaft 13 and the blocking plate 18 so that the blocking plate 18 is horizontal to the body 11. It is rotated so as to stop the rotation of the outer shaft 14 by using the latch (19).

When the inner shaft 13 is continuously rotated using the handle 12 while the rotation of the outer shaft 14 is stopped, the rotating plate inserted into the guide hole 16a of the guide plate 16 while the guide plate 16 rotates. As the guide bearing 15a of 15 moves along the rotation of the guide hole 16a, the rotating plates 15 widen the distance from each other, thereby connecting them to the inside of the blocking plate 18 and the blocking plate 18. The spring 17 is also extended.

The blocking plate 18 moves to both sides to be in close contact with the body 11 of the blocking device 10 to maintain airtightness, and to maintain the closed state by fixing the handle 12 using the stopper 12a. do.

When opening the flow of air, when the handle 12 is rotated in the opposite direction while the stopper 12a is released, the body 11 and the blocking plate 18 are in a vertical state to provide a space. Normal air flow proceeds.

However, the conventional blocking device 10 is a method of manually switching the opening and closing, so manpower is always required to operate the blocking device 10 in a special situation such as a cumbersome operation and a biodischarge, and is exposed to risk factors such as chemical agents. There was a problem.

In addition, bar stopper 19 is used to stop the rotation of the outer shaft 14, the blocking plate 18 should be in a state of exactly closed horizontally with the body 11, the actual position and shape of the latch 19 is the outer shaft When the blocking plate 18 does not exactly stop horizontally and the blocking plate 18 does not stop horizontally, the blocking plate 18 is moved to both sides by using the inner shaft 13 so that the shape of the latch 19 is changed. It failed to act as a blocking device (10).

On the contrary, the body 11 and the blocking plate 18 of the blocking device 10 are not exactly vertical, and thus are not completely opened, and there is a problem in that the air volume change in the duct occurs.

When the knob 12 is rotated when the blocking device 10 is opened from the closed state, the inner shaft 13 rotates to prevent the blocking plate using the rotating plate 15 and the guide plate 16 connected to the inner shaft 13. (18) is slid to move toward the center of the blocking device 10, the outer shaft 14 is rotated to move the blocking plate 18 when the blocking plate 18 is in an open state perpendicular to the body (11). The springs 17 are connected to both blocking plates 18 to make it easier to hold them, but when they are in the closed state, the springs 17 pull the both blocking plates 18 toward the center by the springs 17. It is difficult to completely close the blocking plate 18 to the body 11 to act and the shape change occurs in the blocking plate 18.

In addition, when the wind pressure occurs in a state in which the blocking device 10 is closed, the blocking disk is shaken and moved, and thus the role of the blocking device 10 may not be achieved.

The present invention has been made to solve the above-mentioned problems, the main purpose is to provide a duct blocking device that can be opened and closed manually in the event of emergency, safe from the risk factors such as remote control of the blocking device is not cumbersome. .

Another object of the present invention is to provide a stopper on the outer shaft, the stopper is provided on the rotating flange that is supported by the rotation of the outer shaft in the closed state that the blocking plate is exactly horizontal to the body, the blocking plate is in close contact with the body, the blocking plate and the body It is to provide a blocking device for a building duct that does not change the amount of wind in the open state, which is exactly vertical.

Another object of the present invention is that when the cylinder is in close state by pushing the blocking plate close to the body to compress the spring, the spring is pushed to the outside of the blocking plate by the action of the spring occurs the adhesion performance can be improved To provide a barrier for a building duct.

Blocking device for a building duct according to the present invention for achieving the above object, the cylindrical body is installed so as to communicate with each other between the duct, the inner shaft vertically penetrating the upper and lower body of the cylindrical body and the upper portion of the inner shaft An outer shaft which is extrapolated so as to rotate a predetermined angle along the inner shaft, a remote control drive means and a manual handle means which are provided on the outside of the body to rotate the inner shaft, and fixed to an inner shaft at which a lower end of the outer shaft is located. Rotating cams whose outer circumferential surfaces are formed to have different rotation radii as a center point, and slots fixed to the outer shaft to receive the rotating cams inwardly are formed horizontally, and guide holes communicating with the slots on both right and left sidewalls of the slots. A spring formed on the outer side of the cylinder guide and a part inserted into the guide hole to contact the rotating cam And a cylinder cover which is supported by the cylinder, the outer cover of the outer part of the cylinder and the spring accommodated therein, and a blocking plate which is fastened to the cylinder cover and extended outward in contact with the body to be in close contact with the body. .

According to the present invention, it is possible to open and close automatically or manually, and is safe from risk factors such as chemical agents, and in the closed state, not only the sealed state with improved adhesion performance is correctly maintained but also the air volume does not change in the open state.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

Figure 2 is a perspective view of the building duct blocking device according to the invention, Figure 3 is a partially cutaway perspective view of Figure 2, Figures 4a and 4b is a detailed perspective view of the cylinder portion shown in Figure 3, Figure 5 is in Figure 3 A detailed perspective view of the inner and outer shaft portions shown.

As shown, the blocking device 100 according to the present invention is coupled to the flange 112 is formed horizontally in the air passage on both the left and right sides of the cylindrical body 110 is installed to communicate with each other between the duct and the duct.

The inner shaft 120 vertically penetrates the cylindrical body 110 formed horizontally, and the outer shaft 130 is extrapolated to the upper portion of the inner shaft 120, and the upper end of the inner shaft 120 is larger than the height of the upper end of the outer shaft 130. Protrudes upward

The outer upper portion of the body 110 is provided with a remote controllable automatic drive means 140 and a manual handle means 150, the drive shaft (not shown) of the drive means 140 and the handle means 150 is It is connected to the upper end of the inner shaft 120 protruding above the height of the upper end of the outer shaft 130.

The automatic driving means 140 is, for example, a solenoid valve that opens and closes a valve of a passage by an electric or electronic signal using the principle of an electric magnet.

As illustrated in FIG. 5, a stopper 136 is formed on a rotation flange 134 on which a latch 132 is formed on the outer shaft 130 and rotation is supported while the outer shaft 130 is interpolated, thereby forming an inner shaft 120. When the outer shaft 130 rotates with the outer shaft 130 as it rotates, the latch 132 is caught by the stopper 136 so that the outer shaft 130 rotates more than a predetermined angle.

A central portion of the rotating cam 160 having an ∞ shape is fixed to the inner shaft 120 at the lower end of the outer shaft 130 so that the rotating cam 160 also rotates when the inner shaft 120 is rotated.

The rotating cam 160 has a shape in which the left and right are symmetric about the inner shaft 120, and an outer circumferential surface having different rotation radii is formed around the inner shaft 120 as a center point.

The cylinder guide 170 is fixedly installed on the outer shaft 130 in which the rotary cam 160 is installed, so as to surround the rotary cam 160, and horizontally to the cylinder guide 170 so that the rotary cam 160 is accommodated therein. The slot 172 is formed so that the rotary cam 160 rotates about the inner shaft 120 through the slot formed in the cylinder guide 170.

Guide holes 176 communicating with the slots 172 are formed on the left and right sidewalls 174 of the slot 172 formed in the cylinder guide 170, and the left and right guide holes 176 are springs 180 located outside. The inner portions of the cylinder 190, which are supported by), are respectively positioned, and the outer remaining portion of the cylinder 190 and the spring 180 except for the portions are accommodated in the cylinder cover 200.

The inner end of the cylinder 190 has a horizontal cutting groove 192 is formed to rotate horizontally in the cutting groove 192, the roller 194 is installed, the roller 194 has a different rotation radius of the rotating cam Contact with the outer circumferential surface of 160.

The one end of the spring 180 is supported on the cylinder cover 200 is extended to the outside in a state parallel to the body 110, the blocking plate 210 is in close contact with the body 110 is fastened, reinforcement cap 220 It is fastened to the blocking plate 210 more firmly).

The blocking plate 210 is formed to be rounded around the center portion to the outside and the bent ring frame 212 is formed around the outer circumference to be in close contact with the body (110).

Hereinafter, the operation of the present invention will be described in detail, the drive shaft is rotated by operating the drive means 140 at a remote location or by manually operating the handle means 150 from the outside of the blocking device 100, the drive shaft is rotated, The connected inner shaft 120 is rotated, and the outer shaft 130 extrapolated to the inner shaft 120 is also rotated with the cylinder 190 inserted into the cylinder guide 170.

When the outer shaft 130 rotates by a predetermined angle (eg, 90 °), the cylinder guide 170, the rotation cam 160, the cylinder 190, and the blocking plate 210 connected thereto are also rotated together.

When the outer shaft 130 is rotated by a predetermined angle so that the blocking plate 210 is horizontal with the body 110, the clamping flange 132 of the outer shaft 130 is rotated with the outer shaft 130 interpolated to support the rotation flange 134. The stopper 136 formed in the) is no longer rotated.

When the outer shaft 130 rotates by 90 ° and the inner shaft 120 rotates further by a predetermined angle (for example, 90 °) while the rotation is stopped, the cylinder guide 170 stops rotating. Rotating cam 160 having a shape ∞ perpendicular to 170 (see FIG. 4A) is rotated through slot 172 so that the outer circumferential surface of the side farther away from inner shaft 120 faces the blocking plate 210. The cylinder guide 170 is in a horizontal state. At this time, the roller 194 moves outward along the rotation cam 160 to push the cylinder 190 outward.

Accordingly, the cylinder 190 opens the blocking plate 210 coupled to the cylinder cover 200 and the cylinder cover 200 to the outside, and at this time, as the spring 180 is compressed, the restoring force of the compressed spring 180 is compressed. The blocking plate 210 is in close contact with the body 110 to be in a completely closed state, and the adhesion performance is improved.

In the case of opening the blocking device 100, the rotating cam 160 rotates by the rotation of the inner shaft 120, and the cylinder 190 guides the cylinder guide 170 by the action of the spring 180. Sliding inward through the ball 176 and the blocking plate 210 was in close contact with the body 110 is moved toward the center of the inner shaft (120).

When the cylinder 190 is inserted into the cylinder guide 170, the inner shaft 120 is rotated while the cylinder guide 170, the rotary cam 160, the cylinder 190, the blocking plate 210, like the outer shaft 130 Rotation is also to the blocking plate 210 is perpendicular to the body 110 is to be completely open.

In the above, conventional means for maintaining the seal, for example, o-rings and packings, etc. are not shown, but such modifications can be easily made by those skilled in the art, as well as belonging to the claims of the present invention.

1a and 1b is a partial cutaway perspective view and cross-sectional view of a conventional block device for building ducts,

2 is a perspective view of a building duct blocking device according to the present invention,

3 is a partially cutaway perspective view of FIG. 2;

4a and 4b are detailed perspective views of the cylinder portion shown in FIG.

5 is a detailed perspective view of the inner and outer shaft portions shown in FIG.

<Description of the symbols for the main parts of the drawings>

100: blocking device 110: body

120: internal axis 130: external axis

140: driving means 150: handle means

160: rotary cam 170: cylinder guide

180: spring 190: cylinder

200: cylinder cover 210: blocking plate

220: reinforcement cap

Claims (4)

A cylindrical body installed to communicate with each other between the duct and the duct; An inner shaft that vertically penetrates the upper and lower sides of the cylindrical body, and an outer shaft which is extrapolated so as to rotate a predetermined angle along an inner shaft on an upper portion of the inner shaft; A remote control drive means and a manual handle means provided on an outer side of the body to rotate the inner shaft; A rotary cam installed to be fixed to an inner shaft at a lower end of the outer shaft, the outer cam having an outer circumferential surface to have different rotation radii around a central point; A cylinder guide fixedly installed at the outer shaft, the slot having the rotary cam accommodated therein horizontally, and having guide holes communicating with the slots at left and right sidewalls of the slot; A cylinder inserted into the guide hole to be in contact with the rotary cam and supported by an outer spring; A cylinder cover for accommodating the remaining outer portion of the cylinder and the spring therein; And Blocking device for a building duct comprising a blocking plate fastened to the cylinder cover and extended outward in contact with the body in a horizontal state with the body. The method of claim 1, A stopper is formed on the outer shaft, and a stopper is formed on a rotation flange which is supported for rotation while the outer shaft is interpolated. When the outer shaft rotates by a predetermined angle, the stopper for the building duct is characterized in that the latch stops and no longer rotates. . The method of claim 1, The rotating cam has a ∞ shape, the center portion is fixed so as to penetrate up and down on the inner shaft to form a symmetrical shape for the building duct, characterized in that the left and right about the inner axis. The method according to claim 1 or 3, A cutout groove is formed horizontally at the inner end of the cylinder, and the roller is rotated horizontally in the cutout groove so that the rotating cam is in contact with the roller.

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