JPS60585Y2 - Air volume adjustment damper - Google Patents

Description

[Detailed Description of the Invention] The disclosed technology belongs to a technology in which an air volume adjustment damper is provided at the open end of a flexible duct and the air volume can be adjusted without impairing the bending characteristics of the duct.

Therefore, this device is installed at the open end of a flexible duct that is branched from a fixed duct connected to a blower and can blow air locally, so that the air volume can be easily adjusted. This invention relates to an air volume adjustment damper, in particular, a fluid regulating damper fixedly installed inside the opening end rotatably supports the damper body, and rotatably fixedly supports the threaded rod. , belongs to a technique in which a movable link is interposed between a nut screwed onto the screw rod and the damper body, and the damper body can be rotated by rotating the screw rod.

As is well known, flexible ducts are widely used for local cooling, etc., but in order to adjust the air volume blown through the flexible duct, conventionally a damper is installed on the fixed duct side and this is used to adjust the amount of air blown through the flexible duct. It is made to do so.

Therefore, in the past, when the handle was supported by the flexible duct, the mechanism interfered with the bending part and the characteristics of the flexible duct were impaired.
Another problem is that it is difficult to independently adjust the air volume in multiple flexible ducts that are branched off from a fixed duct, and furthermore, the air outlet positions of the flexible ducts are separated from each other to adjust the air volume. This has the disadvantage of lower workability.

The purpose of this invention was to take into consideration the problems with the air volume adjustment damper for flexible ducts based on the above-mentioned conventional technology, and support a damper body that can be rotated and adjusted via a threaded rod in a flow regulator fixed internally at the open end of the flexible duct. In this way, it is an object of the present invention to provide an excellent air volume adjusting damper that can eliminate the disadvantages, solve the difficulties, and eliminate the disadvantages of the above-mentioned conventional techniques.

The structure of this invention in accordance with the above object is that the damper body, which is rotatably supported by a fluid regulator installed in the open end of the flexible duct, is rotated by operating a threaded rod connected to the damper body. The gist is that the amount of air blown by the flexible duct can always be adjusted at a position where local air conditioning is performed by the flexible duct, and the characteristics of the flexible duct are not impaired in any way.

Next, an embodiment of this invention will be described below based on the drawings.

Reference numeral 1 denotes a flexible duct made of soft resin or the like with a steel wire (not shown) threaded inside, which branches from a fixed duct 2 connected to a blower (not shown), and has a flow regulator 4 at a set position inside its open end. is fixed and replaceable by ports 5, 5.

The flow regulator 4 has a substantially blade-shaped edge 7 opposite to the opening 6 and a hollow box-like interior, and has a semicircular shape at the center of the side edge 7. The damper bodies 8, 8 are rotatably supported via a hinge 9.

A support member 10 is fixed integrally with the fluid regulator 4 at a position near the side edge 7 inside the hollow interior of the fluid regulator 4.
A screw rod 1 whose tip end 11 and tip end 12 are pivotally supported by
3 penetrates the side surface 14 of the fluid regulator 4 on the side of the opening 6, projects its rear end toward the opening 6, and has its middle position 15 pivoted on the side surface 14.

A threaded portion 16 is formed in the threaded rod 13 from the tip end 11 to the rear end, and a knob 17 is further formed at the rearmost end thereof.

A nut 18 is screwed into the threaded portion 16, and links 19, 1 integrally connected to the nut 18 are connected to the nut 18.
Reference numeral 9 denotes a bracket 21 provided at a side setting position of the damper main body 8, 8 via a pivotable pin portion 20, 20.
, 21 via pivotable pins 22, 22.

In the above configuration, the flexible duct 1 is freely bent and air-conditions the required air-conditioning area by blowing air through the fixed duct 2, but when adjusting the amount of air blowing,
When the knob 17 of the threaded rod 13 located in the opening 6 of the flexible duct 1 is rotated in a predetermined direction, the nut 18 screwed into the threaded portion 16 of the threaded rod 13 will rotate into the shaft of the threaded rod 13. move in a given direction.

Accordingly, the link 19 integrally connected to the nut 18
, 19 are moved to a predetermined position as shown by the arrows in the figure, and the damper bodies 8, 8 are moved to the side edge 7 of the fluid regulator 4 via the pin portions 20, 22, 22 and the brackets 21, 21. It pivots around the support section via the hinge 9 as a fulcrum, as shown by the arrow in the figure.

As a result, the amount of air sent from the fixed duct 2 to the flexible duct 1 is adjusted at the opening 6 of the flexible duct, and the required air-conditioned area is always air-conditioned to the setting.

At this time, since the flow regulator 4 is fixedly installed inside the opening end 3, the bending characteristics of the flexible duct 1 will not be impaired in any way by moving along with the movement of the opening 6. No matter how the flexible duct 1 is bent, the air volume can always be adjusted reliably by the knob 17.

The embodiment shown in FIG. 3 is another embodiment, in which the threaded rod 13'
A reversible motor 23 is attached to the end of the cord 24, and the other end of a cord 24 connected to the reversible motor 23 is connected to a switch 25. By operating the switch 25, the reversible motor 23 is driven. The damper bodies 8, 8 are rotated through the same action as in the embodiment described above, and the air volume is adjusted to a predetermined value in the same manner as described above.

Note that the embodiment of this invention is not limited to the above-mentioned embodiment; for example, the flow regulator may be made into a plate shape, and a screw rod or the like may be supported on the outer surface of the plate shape, or a link may be used. By branching, the damper body may be linked to the link at two points.

Further, the damper main body is not limited to a semicircular shape, and a hole may be provided in the setting.

Further, the fluid regulator may be formed into a cylindrical shape that can be freely fitted into the duct, and the damper body may be pivotally supported by the cylindrical fluid regulator.

As described above, according to this invention, the damper body, which can be rotated and adjusted via a threaded rod, is supported by a fluid regulator fixedly installed inside the open end of the flexible duct that branches from the fixed duct. This provides an excellent effect in that the air volume can be easily adjusted using the threaded rod without impairing the bending characteristics of the flexible duct.

Another advantage is that the air volume can be individually and independently adjusted for each of the plurality of flexible ducts branched from the fixed duct.

Furthermore, since the air outlet position of the flexible duct and the air volume adjustment operation part match, there is no need to perform the air volume adjustment operation away from the air conditioning area (working position), which has the advantage of good workability.

Furthermore, since the damper body is rotated in a stepless manner, the air volume can be finely adjusted, and there is an advantage that efficient air conditioning can be performed.

In addition, it has a simple structure and is easy to manufacture, so it has the advantage of being low cost.

[Brief explanation of the drawing]

The drawings are explanatory diagrams of embodiments of this invention, and Fig. 1 is a cross-sectional explanatory diagram of one embodiment, Fig. 2 is a cross-sectional view of Fig. 1
The figure is a sectional explanatory view of another embodiment, and FIG. 4 is an overall perspective explanatory view. 1... Flexible duct, 2... Fixed duct, 3... Open end, 4... Rectifier, 8... Damper body , 13... Screw rod, 18... Nut, 19... Movable link.

Claims (1)

[Scope of utility model registration request] In an air volume adjustment damper disposed at the open end of a flexible duct branching from a fixed duct connected to a blower, a fluid regulator is fixed inside the flexible duct, and a damper body that is pivotally supported by the fluid regulator is fixed to the inside of the flexible duct. An air volume adjusting damper, characterized in that it is connected to one end of a movable link, and the other end of the movable link is connected to a nut that is threaded into a screw rod pivotally supported by the fluid regulator.