JPH0728711U - Register air damper structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To suppress the generation of two-dimensional vortices having vortex filaments parallel to the upper edge of the damper seal generated by the air damper to reduce the generation of abnormal noise. A notch concave portion 33 is formed at a predetermined interval at least at an edge portion of a damper seal 31 attached to the four circumferences of an air damper 26 corresponding to the retainer upper wall 3c, and a convex portion 34 is formed in series to form the air damper 26. Is generated by separating from the edge 34a of the convex portion 34 by the air flow passing through the gap t1 between the damper seal 31 and the upper wall 3C of the retainer which is closed in a rearward inclination with respect to the air flow F. For the two-dimensional vortex 24 having the vortex filament 25 parallel to the vortex filament 25, a substantially three-dimensional vortex 35 that passes through the notch recess 33 and can disturb the vortex filament 25 of the two-dimensional vortex 24 is generated. It is possible.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air damper structure in an air conditioner.

Conventionally, as a structure of a register of this type, for example, a register 1 attached to a vehicle or the like, as shown in FIG. 5, a retainer 2, a barrel 5 attached to a front portion of the retainer 2 and the retainer 2 are provided. 2 and the air damper 17 attached to the rear part.

This retainer 2 has a substantially rectangular tubular retainer body 3 and an attachment portion 3 a for attaching a bezel 4 in a combined shape is formed on the front side of the retainer body 3. The attachment portion 3 a and the vessel 4 Due to this, a barrel mounting portion is formed that is bulged in an up and down arc shape so that the barrel 5 can be rotated up and down. The barrel 5 is composed of upper and lower frames 6 and 7 and left and right side frames 8. The upper and lower frames 6 and 7 have a predetermined width, and the outer surface thereof has an arc shape along the arc surface of the barrel mounting portion. Further, a plurality of horizontal blades 9 are horizontally formed at predetermined intervals on the front side between the left and right side frames 8. In addition, vertical blades 10 are pivotally mounted at predetermined intervals between upper and lower frames 6 and 7 on the rear side of the horizontal blades 9 via shaft portions 11 projecting from above and below the vertical blades 10. A notch 12 is formed at a right angle in the rear part of the lower edge side of the lower part, and a connecting pin 13 is projectingly provided at a predetermined position of the horizontal part of the notch 12, and each connecting pin 13 connects a connecting rod 14 to each other. It is connected via a pivot. Further, a gripping portion 15 extending forwardly from between the horizontal blades 9 is formed at approximately the center of the front edge of the vertical blade 10 located in the center of the vertical blades 10. The barrel 5 formed in this way is pivotally attached to the mounting portion 4 via a rotary shaft 16 that projects laterally from the substantially central portion of the left and right side frames 8, and the barrel 5 supports the rotary shaft 16 by the rotary shaft 16. The vertical blade 1 can be adjusted vertically by rotating the horizontal blade 9 through the connecting rod 14 by rotating the horizontal blade 9 to change the direction of the horizontal blade 9. It is provided so that the wind direction can be adjusted to the left and right by linking 0 together.

Further, the air damper 17 is opened at a predetermined position between the left and right side walls 3 b of the retainer body 3 via a damper shaft 23 by a damper opening / closing mechanism (not shown) so that the opening / closing angle of the air damper 17 is horizontal and fully open with respect to the air flow F. The air damper 17 adjusts the amount of air blown by adjusting between the position and a closed position where the air flow F is closed rearwardly. The air damper 17 is provided with a plate 18 having a predetermined area and four circumferences of the plate 18. Has gripping edges 19 and 20 formed in a bifurcated shape for holding the damper seal 22, and a groove portion 21 is integrally formed. Between the gripping edges 19 and 20, a substantially ring shape made of urethane or felt is formed. The damper seal 22 is elastically attached. The air damper 17 formed in this way is pivotally mounted via a damper shaft 23. The damper seal 22 has a short width of H1.

[0005]

[Problems to be solved by the device]

 However, in the register 1 configured as described above, the air damper 17 is positioned at the illustrated opening position that does not completely close the opening of the retainer body 3 by operating the damper opening / closing mechanism to rotate the air damper 17 to the closed position side. Then, as shown in FIG. 7, on the upper edge 22a side of the damper seal 22, there is an acute angle gap t1 with respect to the upper wall 3c, and on the lower edge 22b side there is an obtuse angle with respect to the lower wall. Since it is positioned with the gap t2, most of the air flow F blown from the direction of the arrow in the figure is guided by the air damper 17 and the flow velocity flowing through the gap t1 becomes large. When flowing through this gap t1, a two-dimensional vortex 24 having vortex threads 25 parallel to the edge of the damper seal upper edge 22a is generated as shown in FIG. 7 due to the separation of the flow from the edge of the damper seal upper edge 22a. The two-dimensional vortex 24 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 a strange noise (whistling sound). Note that FIG. 8 shows the occurrence of this abnormal noise, and FIG. 8 shows the measurement results at a certain angle at which the whistle blowing sound H of the air damper of the register was generated by a certain device, and the vertical axis represents the noise level (d B ), And the horizontal axis represents frequency (Hz).

As measures against this whistling sound, there is, for example, the one disclosed in Japanese Patent Laid-Open No. 3-200418, and the one disclosed in this publication is a 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 a position close to the above, there is a space limitation in providing the convex member 26. When the upper edge 22a of the damper seal of the air damper 17 reaches the relational position shown in FIG. 7, a two-dimensional vortex 24 having a vortex thread 25 parallel to the edge is generated, and this two-dimensional vortex 24 is positioned downstream. There is a possibility that the vortex 25 of the vortex 24 interferes with the upper frame 6 of the horizontal barrel 5 which is parallel to the vortex 25 to generate an abnormal noise (whistle sound).

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

[0008]

[Means for Solving the Problems]

 In order to solve the above technical problems, the present invention is directed to a register comprising an air damper equipped with a horizontal blade in the front part of a retainer and a barrel equipped with a vertical blade, and an opening / closing opening of the retainer. An air damper structure, in which notch concave portions are formed at a predetermined interval at least at an edge portion corresponding to the retainer upper wall of the damper seal attached to the four circumferences of the air damper to form a series of convex portions, and the air damper is Vortex parallel to the edge generated by separating from the edge of the convex portion by the air flow passing through the gap between the damper seal above it and the upper wall of the retainer. An air damper of a register configured to generate a substantially three-dimensional vortex capable of disturbing the two-dimensional vortex passing through the notch concave portion with respect to the two-dimensional vortex having a thread. It is an elephant.

[0009]

[Action]

 With the above configuration, the 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 is a vortex parallel to the edge. For a two-dimensional vortex having a two-dimensional vortex, 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 protrusion by passing through the notch recess. Suppresses the development of large eddies.

[0010]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. The register shown in FIG. 1 of this embodiment is constructed in substantially the same manner as the conventional register 1 described above, and is attached to a retainer 2, a barrel 5 attached to the front portion of the retainer 2, and a rear portion of the retainer 2. It is composed of an air damper 26. Since the register 1 is different only in the air damper 26, each component is attached with the reference numeral of the register 1 and the description thereof will be omitted. The air damper 26 will be described.

The air damper 26 is positioned at a predetermined position between the left and right side walls 3 b of the retainer body 3 via a damper shaft 23 by a damper opening / closing mechanism (not shown) so that the opening / closing angle of the air damper 26 is a horizontal fully open position with respect to the air flow F. As shown in FIG. 1, the tilt angle is adjusted between the air flow F and the air flow F to adjust the air flow rate. The air damper 26 has a plate portion 27 having a predetermined area. On the four circumferences of the plate portion 27, bifurcated gripping edges 28 and 29 for gripping the damper seal 31 are formed to integrally form a groove portion 30.

Between the gripping edges 28 and 29 of the plate portion 27 thus formed, a substantially ring-shaped damper seal 31 made of urethane or felt of the same quality as the conventional one is elastically attached by using elasticity. ing. The damper seal 31 is formed in a substantially ring shape similar to the conventional damper seal 22 as shown in FIG. 2, but as shown in FIG. 2, the conventional short width H1 extends over the long width H2. An extension portion 32 is formed by extending a predetermined length h (for example, about 2 mm) in the up-down direction, and substantially rectangular cutout recess portions 33 are formed at predetermined intervals in the extension portion to form a series of protrusion portions 34. Has been done. The damper seal 31 thus formed is attached to the groove portion 30, and the air damper 26 is pivotally attached to the retainer body 3 via the damper shaft 23.

When the air damper 26 pivotally attached in this manner is operated by the damper opening / closing mechanism in the closing direction b from the fully open position a to close the retainer 2, the extension 32 of the damper seal 31 causes the extension 32 of the retainer body 3 to move. In addition to being elastically adhered along the upper wall 3c and the lower wall, the notch recess 33 is also elastically attached to block the flow F of the air blown from the direction of the arrow, and the extension 32 Air does not leak from the cutout recess 33 formed in the above.

The air damper 26 formed as described above does not completely close the opening of the retainer main body 3 by operating the damper opening / closing mechanism, and the edge 34 a of the convex portion 34 of the extension portion 32 of the damper seal 31 and the retainer main body 3 When the air damper 26 is positioned at the opening position c with the upper wall 3c having the gap t1, the air flow F is guided along the surface 27a of the plate portion 27 toward the gap t1 and flows through the gap t1. At this time, due to the separation of the flow from the edge 34a of the convex portion 34 of the extension 32, the two-dimensional vortex 24 having the vortex filament 25 parallel to the edge 34a is about to be generated as in the conventional case. Since the air flow F passes through the notch recess 33 formed in the extension portion 32, when the air flow F passes through the recess 33, the flow is separated from the left and right end faces 34b of the protrusion 34 as shown in FIG. The vortex filaments 25 of the two-dimensional vortex 24 generate a substantially three-dimensional vortex 35 that can disturb the vortex filament 25 and suppress the development of the two-dimensional vortex 24. Abnormal noise (whistle sound) generated by colliding with the frame 6 etc. can be significantly reduced. As a result of measuring the register 1 equipped with the air damper 26 in the same manner as the conventional one, as shown in FIG. No peaks were seen and no whistling sound was observed.

In the above embodiment, the extension 32 of the damper seal 31 is provided with the substantially rectangular cutout recesses 33 formed at predetermined intervals. However, the present invention is not limited to this, and for example, FIG. ) (b) (c) may be used. That is, FIG. 4 (a) shows a plurality of concavo-convex portions 36a, 36b continuously formed in a corrugated shape continuous with the extension 32, and FIG. 4 (b) shows the extension 32 substantially at a predetermined interval. The V-shaped notch recess 37a is formed to form the substantially mountain-shaped protrusion 37b. Further, FIG. 4C shows that the extension 32 is formed with substantially U-shaped notch recesses 38a at predetermined intervals. The configuration is such that the portion 38b is formed in a series, and even in the shape of these extension portions 32, the vortex filaments 25 of the two-dimensional vortex 24 similar to the above are substantially three-dimensionally disturbable. The vortex 35 is generated, the development of the two-dimensional vortex 24 is suppressed, and the abnormal noise (whistling sound) generated by colliding with the upper frame 6 of the barrel 5 as in the conventional case can be significantly reduced. It is a thing. Although the cutout recesses 33 are formed in the upper and lower extension portions 32 of the damper seal 31 in the above embodiment, the upper extension portion 32 may be provided alone.

[0016]

[Effect of device]

 According to the present invention, by adopting the above configuration, notches are formed at predetermined intervals in the extension part of the damper seal to provide the protrusions, and the edges of the protrusions of the extension part are separated by the flow to form the same edge. A two-dimensional vortex with parallel vortex lines is about to be generated, but when this air flow passes through the notch recess, the two-dimensional vortex vortex is generated due to the separation of the flow from the notch recess. A nearly three-dimensional vortex that makes it possible to disturb the yarn is generated, the development of the two-dimensional vortex is suppressed, and abnormal noise generated by colliding with the upper frame of the barrel, the connecting rod, etc. ( The whistle noise) can be significantly reduced, and the simple structure of forming the notched recesses in the damper seal does not restrict the retainer and does not require any special member. Measures for whistling sound at the same cost as Ukoto can, also, does not decrease the function of the register.

[Brief description of 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 in the rear portion of the air damper.

4 (a), (b) and (c) are views showing respective cutout recesses formed in the extension portion of the damper seal.

FIG. 5 is a cross-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 in the rear portion of the conventional air damper.

FIG. 8 is a graph in which a whistle blowing sound of a conventional register is measured by a measuring device.

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

[Explanation 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 Recess 34 Convex 34a Convex Edge 35 Nearly Two-dimensional Vortex

Claims (1)

[Scope of utility model registration request] 1. An air damper structure of a register, comprising: an air damper having a horizontal blade and a vertical blade attached to a front portion of a retainer, the opening of the retainer being openable and closable. Of the damper seal mounted on the four circumferences of the damper seal, at least at the edge corresponding to the upper wall of the retainer, cutout recesses are formed at predetermined intervals to form a series of protrusions, and the air damper is inclined rearward with respect to the flow of air. To a two-dimensional vortex having vortex filaments parallel to the edge of the convex portion generated by separating from the edge of the convex portion by the air flow passing through the gap between the damper seal above the retainer 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 that can disturb the two-dimensional vortex passing through the cutout recess.