JP2587099B2 - Air volume damper opening adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an air volume damper opening adjustment device for adjusting the air volume of an air conditioner, and particularly to an air volume suitable for air balance adjustment of a clean room air conditioner. The present invention relates to a damper opening adjustment device.

<Conventional technology> The air duct of the air conditioning equipment is generally located on the ceiling of the corridor, the air volume damper is located inside the air duct, and the damper opening adjustment axis hangs down from the ceiling. The air flow is adjusted by turning the opening adjustment shaft.

In the case of air-conditioning equipment in a clean room, when performing cleaning, sterilization, etc. in some rooms, the dampers in those rooms are closed, but at that time the air balance in other areas is disrupted,
All dampers need to be readjusted.

In such an air volume damper adjustment device, although a damper opening indicator is provided, for example, it does not accurately adjust and display a base point position such as a zero position in a fully closed state of the air volume damper. Was.

<Problems to be solved by the invention> When the base position of the air volume damper is not accurately adjusted and displayed, the opening scale displayed on the scale plate does not match the opening of the air volume damper, When closing the air duct that blows air to some rooms and re-adjusting all dampers to balance the air in other areas, it was difficult to adjust completely, which sometimes took a long time to adjust .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an air volume damper adjustment device that includes a damper opening indicator and that can accurately adjust a base position of the damper.

<Means for Solving the Problems> In order to achieve the above object, an air volume damper adjusting device of the present invention includes an opening adjustment shaft connected to a blade shaft of an air volume damper, and a loose fit on the opening adjustment shaft. A cylindrical screw body, a screw for tightening and fixing the loosely fitted cylindrical screw body to the opening adjustment shaft, and a base end part on a screw part formed on the surface of the cylindrical screw body. With a screwed screw,
A scale plate provided along the opening adjustment axis and a slit of a predetermined length formed in the scale plate along the axial direction of the opening adjustment axis, and the tip of the pointer is outwardly from the slit. Projecting.

<Operation> The blade axis of the damper is connected to the opening adjustment shaft, and the opening of the damper is set to an angle corresponding to the rotation speed of the opening adjustment shaft.

The cylindrical screw body loosely fitted to the opening adjustment shaft can idle with respect to the opening adjustment shaft when the screw is not tightened.For example, the opening of the damper is reduced by rotation of the opening adjustment shaft. In the fully closed state, only the cylindrical screw is idled in this state, the pointer protruding from the slit of the scale plate is moved to the position where the scale indicates zero, and the screw is tightened. The zero position can be adjusted by fixing the body to the opening adjustment shaft, and the display of the damper opening and the scale can be accurately matched. In this state, the tip of the pointer screwed into the cylindrical screw body rises or falls in the slit of the scale plate as the opening adjustment shaft rotates.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show a first embodiment of the present invention. In FIG. 1A, reference numeral 1 denotes an opening adjustment shaft, which is suspended from the ceiling 7 and rotated to adjust the opening of the damper.

Reference numeral 2 denotes a scale plate, which is attached to the ceiling 7 through holes 2b and 2b and has a hole 2c through which the opening adjustment shaft 1 penetrates, and performs a function of a sealing rosette. A damper opening scale and a damper connection system area display are marked on this surface.

Reference numeral 3 denotes a screw provided with a through-hole having a diameter capable of being loosely fitted to the opening adjustment shaft 1 at the center of the cylindrical body, and having a spiral crest and a groove formed on the cylindrical surface of the cylindrical body. Is inserted into and fixed to the opening adjustment shaft 1 and is screwed to the base end of the pointer 5. Reference numerals 4 and 4 denote nuts which are fastened to the threaded portion at the tip of the opening adjustment shaft 1, fit with the adjustment handle 6, and transmit the rotation of the handle 6 to the opening adjustment shaft 1.

The loosening of the nut 4 may be performed by the tightening force of the double nut or by welding.

The close contact portion of the scale plate 2 is not limited to a rectangular shape as shown in FIG. 1 (a) and may have any shape. For example, FIG. 1 (b)
It may be a triangle as shown in FIG.

Opening adjusting shaft 1, screw 3, pointer 5, slit 2a of scale plate 2
As shown in FIG. 2, the screw 3 is fastened to the opening adjustment shaft 1 with the screw 3a, and the base end of the pointer 5 is
And the leading end protrudes from the slit 2a. In this state, the adjustment handle 6 is rotated to set the damper to the fully closed state, the screw 3a is loosened, only the screw 3 is idled, and the pointer 5 is moved to the position where the scale of the scale plate 2 is zero. By tightening the screw 3a and fixing the screw 3 to the opening adjustment shaft 1, the opening of the damper and the scale indication on the scale plate 2 can be accurately matched.

Therefore, even if the screw 3 rotates, the pointer 5 does not rotate and the screw 3
It moves up and down supported by.

The scale plate 2 is fastened to the ceiling 7 with screws 8,8.

The scale plate 2 has a large distance between the slit 2a and the screw 3 so that the rotational moment of the pointer 5 can be sufficiently supported.
The shape of the hanging part is an isosceles triangle.

The base end of the pointer 5 is provided with a notch so as to mesh with the screw 3 loosely.

The hole 31 of the screw 3 through which the opening adjustment shaft 1 penetrates has a diameter of 14 mm in consideration of the fact that the opening adjustment shaft generally has a diameter of 13 mm.

Screw hole 3a for fixing screw 3 to opening adjustment shaft 1 is 3m
mφ is provided at a position 7 mm from the lower end.

The material of the screw 3 is appropriately selected from resin, plastic, synthetic rubber, aluminum, brass, iron and the like.

The material of the pointer 5 is made of resin, plastic, synthetic rubber, aluminum, iron (zinc-coated iron plate) or the like, which is compatible with the material of the screw 3.

The material of the scale plate 2 is selected from resins, plastics, aluminum, iron (zinc-coated iron plate), etc., which are suitable for the place of use.

Next, the connection relationship between the opening degree adjusting device and the damper will be described with reference to FIG.

A worm wheel 11 is fixed to a blade shaft to which the damper blade 12 is fixed, and the worm wheel 11 meshes with a worm 10 fixed to the opening adjustment shaft 1.

Further, the damper blades 12 and 12a and 12b are connected by a link mechanism so as to have the same angle. Therefore, when the opening adjustment shaft 1 rotates, the damper blades 12, 12a, 12b also rotate, but the rotation angle α is 90 °, that is, from fully closed to fully open.

Therefore, if the diameter of the worm wheel 11 is 6 cm, the required length of the worm 10 is 1/4 × πD, which is 4.7 cm. Actually, use a 5cm one.

These 5 cm screws are used as standard screws for the opening adjustment shaft, and 7.5 cm and 10 cm screws are also used as standard.

The length of the slit 2a of the scale plate 2 is slightly longer than the length of the standard screw for opening adjustment shaft 5cm, 7.5cm, 10cm, 7cm, 9.
5cm and 12cm are standard types.

In addition, the diameter of the hole through which the opening adjustment shaft 1 of the scale plate 2 penetrates is generally considered in consideration that the diameter of the opening adjustment shaft 1 is 13 mmφ.
16 mmφ.

A second embodiment of the present invention shown in FIG. 4 is used in a ceiling-sealed corridor space, and a rubber seal or another sealing seal 9 is attached to a through hole of an opening adjustment shaft.

In a third embodiment of the present invention shown in FIG. 5, the hanging portion of the scale plate 2 has two opposing surfaces, two slits are provided, and the pointer portion 3 is provided.
Are projected into this slit.

With this configuration, the moment acting on the pointer is supported at two points, the frictional force is reduced, and the pointer moves smoothly.

Although the embodiment of the present invention is configured as described above, the invention is not limited to this.For example, the screw at the base end of the pointer is not a plate but a cylinder and is cut at several pitches, and this and the tip are welded. They may be formed integrally.

<Effects of the Invention> As described above, the air volume damper opening adjustment device of the present invention can accurately adjust the damper opening indicator, and its pointer projects from the slit and the position of the pointer from the outside, that is, The damper opening scale can be checked accurately. Therefore, it is possible to accurately and easily adjust the degree of opening when a part of the room duct is fully closed.

[Brief description of the drawings]

1 (a) is a perspective view showing an air volume damper opening adjusting device according to a first embodiment of the present invention, FIG. 1 (b) is a perspective view showing another embodiment of a scale plate, FIG. Is a sectional view showing a first embodiment, FIG. 3 is a perspective view showing a connection relationship between an opening adjusting device and a damper of the first embodiment, and FIG. 4 is a second embodiment of the present invention. FIG. 5 is a perspective view showing a third embodiment of the present invention. 1 ... opening adjustment axis, 2 ... scale plate, 3 ... screw, 3a ... screw, 4 ... nut, 5 ... pointer, 6 ... adjustment handle, 7 ... ceiling, 8 ... screw , 10 …… worm, 11 …… worm wheel, 12 …… damper blade.

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-62-119353 (JP, A) JP-A-63-82146 (JP, U) JP-A-56-79778 (JP, U)

Claims (1)

(57) [Claims] An opening adjusting shaft connected to a blade shaft of an air volume damper; a cylindrical screw loosely fitted to the opening adjusting shaft; and a cylindrical screw loosely fitted to the opening adjusting shaft. A screw tightened and fixed to the opening adjustment shaft; a pointer having a base end screwed to a screw portion formed on the surface of the cylindrical screw body; and a scale provided along the opening adjustment shaft An air volume damper comprising a plate and a slit of a predetermined length formed in the scale plate along the axial direction of the opening adjustment shaft, wherein the tip of the pointer projects outward from the slit. Opening adjustment device.