JP2570855Y2 - Air damper structure of register - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an air damper structure in an air conditioner.

2. Description of the Related Art Conventionally, as a structure of a register of this kind, for example, a register 1 mounted on a vehicle or the like, a retainer 2, a barrel 5 mounted on a front portion of the retainer 2, and a retainer 2 as shown in FIG. It comprises an air damper 17 attached to the rear.

The retainer 2 has a retainer body 3 having a substantially rectangular cylindrical shape, and a mounting portion 3a for attaching a bezel 4 to the front side of the main body 3 in a mating shape. The mounting portion 3a and the vessel 4 make up the mounting portion 3a. A barrel mounting portion is formed so as to bulge up and down in an arc shape so that the barrel 5 can rotate up and down. The barrel 5 is composed of upper and lower frames 6, 7 and left and right side frames 8, and the upper and lower frames 6, 7 have a predetermined width, and the outer surface thereof is formed in an arc shape along the arc surface of the barrel mounting portion. And also
A plurality of horizontal blades 9 are formed horizontally at predetermined intervals on the front side between the left and right side frames 8. A vertical blade 10 is pivotally mounted at predetermined intervals between the upper and lower frames 6 and 7 on the rear side of the horizontal blade 9 via shafts 11 projecting up and down from the vertical blade. A notch 12 is formed at a right angle in the rear portion on the lower edge side, and connecting pins 13 are protruded at predetermined positions of a horizontal portion of the notch 12, and each connecting pin 13 is connected via a connecting rod 14. And are pivotally connected. In the vertical blade 10, a grip portion 15 extending forward from between the horizontal blades 9 is formed substantially at the center of the front edge of the vertical blade 10 located at the center. The barrel 5 formed in this way is pivotally attached to the mounting portion 4 via a rotation shaft 16 protruding laterally from substantially the center of the left and right side frames 8, and the barrel 5 is rotated via the rotation shaft 16. It is possible to adjust the wind direction up and down by changing the direction of the horizontal blade 9 by turning it up and down, and by operating the gripping portion 15 left and right, the vertical blades 10 are integrated via the connecting rod 14. It is provided so that the wind direction can be adjusted left and right in conjunction with.

The opening and closing angle of the air damper 17 is set at a predetermined position between the left and right side walls 3b of the retainer main body 3 by a damper opening / closing mechanism (not shown) via a damper shaft 23. The air damper 17 has a predetermined area and a plate 18 having a predetermined area and a damper disposed on four sides of the plate 18. Bifurcated gripping edge 1 for gripping seal 22
A groove 21 is formed integrally with the grooves 9 and 20, and a substantially ring-shaped damper seal 22 made of urethane or felt is elastically attached between the gripping edges 19 and 20. The air damper 17 thus formed is pivotally connected via a damper shaft 23. The short width of the damper seal 22 is formed to the dimension H1.

[0005]

However, in the thus constructed register 1, the opening of the retainer main body 3 is not completely closed by operating the damper opening / closing mechanism to rotate the air damper 17 to the closing position side. When the air damper 17 is located at the opening position, as shown in FIG. 7, the upper edge 22a of the damper seal 22 is positioned with a gap t1 at an acute angle to the upper wall 3c, and the lower edge 22b Since the side is positioned with the gap t2 at an obtuse angle with respect to the lower wall,
Most of the flow F of air blown from the direction of the arrow shown in the figure is guided by the air damper 17, and the flow velocity flowing through the gap t1 increases. When flowing through the gap t1, a two-dimensional vortex 24 having a vortex 25 parallel to the edge of the upper edge 22a of the damper seal is generated by the separation of the flow from the edge of the upper edge 22a of the damper seal as shown in FIG. This two-dimensional vortex 2
4 interfered with the upper frame 6 and the like of the horizontal barrel 5 parallel to the vortex 25 of the vortex 24 located downstream, and generated an unusual sound (whistling sound). FIG. 8 shows the generation of this abnormal noise.
FIG. 8 shows a measurement result at a certain angle where a whistling sound H of an air damper of a register is generated by a certain device, and the noise level (dB) is displayed on the vertical axis and the frequency (Hz) is displayed on the horizontal axis. .

As a countermeasure against the whistling noise, there is, for example, one disclosed in Japanese Patent Application Laid-Open No. 3-200418. The one disclosed in this publication is attached to the mounting portion 3a of the upper wall 3c of the retainer body 3 as shown in FIG. Although the convex member 26 such as a rib or a seal member is provided at an adjacent position, there is a problem that the provision of the convex member 26 is limited in terms of space, and the convex member 26 and the air damper 17 are not provided. When the damper seal upper edge 22a of FIG.
A two-dimensional vortex 24 having a vortex 25 parallel to the edge is generated, and the two-dimensional vortex 24 is located downstream of the vortex 24.
May interfere with the upper frame 6 and the like of the horizontal barrel 5 parallel to the vortex 25 of the vortex yarn 25 to generate an unusual noise (whistling sound).

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and suppresses generation of a two-dimensional vortex having a vortex parallel to an upper edge of a damper seal generated by an air damper. An object of the present invention is to provide an air damper structure of a register that can reduce sound generation.

[0008]

According to the present invention, in order to solve the above-mentioned technical problem, a lateral blade is provided at a front portion of a retainer,
An air damper structure of a register including a barrel having a vertical blade and an air damper mounted on the retainer so that the opening of the retainer can be opened and closed. The notch recesses are formed at predetermined intervals on the edge to be formed, and the protrusions are formed in series, and the air damper is closed in a backward inclined manner against the flow of air, and the upper damper seal and the upper wall of the retainer are closed. The two-dimensional vortex having a vortex parallel to the edge generated by separating from the edge of the convex portion due to the air flow passing through the gap between
This is an air damper structure of a register configured to generate a substantially three-dimensional vortex capable of disturbing the dimensional vortex.

[0009]

According to the above construction, an air flow passing through the gap between the damper seal and the upper wall of the retainer separates from the edge of the convex portion formed on the upper edge of the damper seal and generates a vortex parallel to the edge. With respect to the two-dimensional vortex having a thread, a three-dimensional vortex having a vortex that is perpendicular to the two-dimensional vortex of the two-dimensional vortex is generated from the side surface of the convex part through the notch concave part, and thus two-dimensional Suppress the development of eddies.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The register shown in FIG. 1 of this embodiment has substantially the same configuration as the conventional register 1, and includes a retainer 2, a barrel 5 attached to a front portion of the retainer 2,
An air damper 26 is provided at the rear of the retainer 2. Note that this register 1 is an air damper 2
6 are different from each other, the respective components are denoted by the reference numerals of the above-described register 1 and the description thereof is omitted, and the configuration of the air damper 26 will be described.

The opening and closing angle of the air damper 26 is set at a predetermined position between the left and right side walls 3b of the retainer main body 3 via a damper shaft 23 by a damper opening / closing mechanism (not shown) so that the opening angle of the air damper 26 is set to a horizontal fully open position with respect to the air flow F. Air flow F
On the other hand, as shown in FIG. 1, the air flow rate is adjusted by adjusting the tilt angle between a closed position and a rearward inclined position, and the air damper 26 includes a plate portion 27 having a predetermined area and a plate portion 27 having a predetermined area. Bifurcated gripping edges 28 and 29 for gripping the damper seal 31 are formed on the four circumferences, and a groove 30 is integrally formed.

A substantially ring-shaped damper seal 31 made of urethane or felt of the same quality as that of the related art is elastically attached between the gripping edges 28 and 29 of the plate portion 27 thus formed by utilizing elasticity. ing. As shown in FIG. 2, the damper seal 31 is formed in a substantially ring shape similar to the conventional damper seal 22.
As shown in the figure, the conventional short width H1 is extended over the long width H2 by a predetermined length h (for example, about 2 mm) in the vertical direction to form an extension portion 32. The extension portion 32 has a substantially rectangular shape at a predetermined interval. The notch concave part 33 is formed and the convex part 34 is formed in a series. The damper seal 31 thus formed
Is attached to the groove 30 and the air damper 26
Is rotatably connected to the retainer main body 3 via a damper shaft 23.

The air damper 26 thus pivotally mounted is
When the retainer 2 is closed by operating the damper opening / closing mechanism from the fully open position a in the closing direction b, the extension 32 of the damper seal 31 is elastically adhered along the upper wall 3c and the lower wall of the retainer main body 3. At the same time, the cut-out recess 33 is also elastically attached, and the air flow F blown in the direction of the arrow.
Is cut off, and a notch recess 33 formed in the extension portion 32 is formed.
No more air leaks.

The protrusion 34 of the extension 32 of the damper seal 31 that does not completely close the opening of the retainer body 3 by operating the damper opening / closing mechanism by operating the air damper 26 formed as described above.
Gap 34 between the edge 34a and the upper wall 3c of the retainer body 3.
When the air damper 26 is located at the opening position c having a value of 1, the air flow F is guided along the surface 27a of the plate portion 27 toward the gap t1. The two-dimensional vortex 24 having the vortex 25 parallel to the edge 34a is to be generated by the separation of the flow from the edge 34a of the 34 in the same manner as in the prior art. Since it passes through the formed notch recess 33, when passing through this recess 33,
As shown in FIG. 3, a substantially three-dimensional vortex 35 capable of disturbing the vortex 25 of the two-dimensional vortex 24 is generated by the separation of the flow from the left and right end surfaces 34b of the convex portion 34, and the two-dimensional vortex 35 is generated. The development of a typical vortex 24 is suppressed, and an abnormal noise (whistling sound) generated by colliding with the upper frame 6 of the barrel 5 or the like as in the prior art can be significantly reduced. As a result of measuring the register 1 in the same manner as in the related art, a remarkable peak as shown in FIG. 8 was not found, and no whistling sound was observed.

In the above-mentioned embodiment, the substantially rectangular cutout recesses 33 are formed at predetermined intervals in the extension 32 of the damper seal 31. However, the present invention is not limited to this. For example, FIG. ) (b) and (c). That is, FIG. 4A shows a plurality of uneven portions 36a and 36b continuously formed in a waveform shape continuous with the extension portion 32.
FIG. 4B shows a substantially V-shaped notch recess 37a formed at a predetermined interval in the extension 32 to form a substantially mountain-shaped protrusion 37b. FIG. A substantially U-shaped cut-out recess 38a is formed at a predetermined interval to form a series of protrusions 38b. Even in the shape of these extensions 32, the same two-dimensional vortex 24 as described above is formed. Vortex 2
On the other hand, a substantially three-dimensional vortex 35 capable of disturbing the vortex 5 is generated, and the development of the two-dimensional vortex 24 is suppressed. Abnormal noise (whistling sound) can be significantly reduced. In the above-described embodiment, the cutout recesses 33 are formed in the upper and lower extensions 32 of the damper seal 31. However, only the upper extension 32 may be provided.

[0016]

According to the present invention, with the above structure, notches are formed at predetermined intervals in the extension of the damper seal to provide projections, and the flow of the flow from the edge of the projection of the extension is increased. A two-dimensional vortex having a vortex parallel to the edge is to be generated by the separation. However, when this air flow passes through the notch, the two-dimensional vortex is separated by the separation of the flow from the notch. For the vortex of the vortex, a substantially three-dimensional vortex that can disturb the vortex is generated, and the development of the two-dimensional vortex is suppressed. The sound (whistling sound) can be significantly reduced, and since it has a simple configuration in which a notch recess is formed in the damper seal, there is no restriction from the retainer, and no special members are required. Whistle at the same cost as before Measures can be performed, also it does not decrease the function of the register.

[Brief description of the drawings]

FIG. 1 is a sectional view of a register.

FIG. 2 is a plan view of an air damper.

FIG. 3 is an explanatory diagram of vortex generation at the rear of an air damper.

FIGS. 4 (a), (b) and (c) are views showing various aspects of a cutout recess formed in an extension of a damper seal.

FIG. 5 is a sectional view of a register to which a conventional air damper is attached.

FIG. 6 is a plan view of a conventional air damper.

FIG. 7 is an explanatory diagram of vortex generation at the rear of a conventional air damper.

FIG. 8 is a graph showing whistling sound of a conventional register measured by a measuring device.

FIG. 9 is a cross-sectional view of a register showing another mode of the conventional abnormal sound generating means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Register 2 Retainer 3 Retainer main body 5 Barrel 9 Horizontal blade 10 Vertical blade 24 Two-dimensional vortex 25 Vortex 26 Air damper 31 Damper seal 32 Extension 33 Notch notch 34 Projection 34a Edge of projection 35 Approximately two-dimensional vortex

Claims (1)

(57) [Scope of request for utility model registration] An air damper structure for a register, comprising: a barrel provided with a horizontal blade and a vertical blade at a front portion of a retainer; and an air damper mounted to open and close an opening of the retainer. A notch recess is formed at a predetermined interval at least at an edge corresponding to the upper wall of the retainer of the damper seal attached to the four circumferences, and a series of protrusions are formed, and the air damper is inclined backward with respect to the flow of air. And a two-dimensional vortex having a vortex parallel to the edge generated by separating from the edge of the projection by air flow passing through a gap between the upper damper seal and the upper wall of the retainer. On the other hand, an air damper structure of a register configured to generate a substantially three-dimensional vortex capable of disturbing the two-dimensional vortex passing through the notch recess.