JP4625403B2 - Air supply register - Google Patents

Description

  The present invention is a cylindrical main body that is inserted into the air supply ventilation opening from the indoor side, and is attached to the main body so as to be movable in the axial direction, and opens and closes the air supply path each time a pressing operation is performed in the axial direction. The present invention relates to an air supply register provided with a push-type lid configured to do so.

  A cylindrical main body inserted into the air supply ventilation port from the indoor side, and attached to the main body so as to be movable in the axial direction, and configured to open and close the air supply path each time a pressing operation is performed in the axial direction. An air supply register having a push-type lid body is known from Patent Documents 1 and 2 and the like. In this type of air supply register, as shown in FIG. 5, the outside air that has passed through the main body 2 hits the outer periphery of the back surface of the lid 3 and rebounds to the inner wall surface W around the air supply vent, so that it is included in the outside air. There is a problem that the inner wall surface W around the air supply vent is contaminated by dust or oily smoke.

  For this reason, in patent document 2, the 1st ring-shaped projection part which protruded to the indoor side was provided in the flange part formed in the indoor side edge part of a main body, and the 1st ring-shaped protrusion was provided in the back surface outer peripheral part of the cover body. A second ring-shaped projection having a smaller diameter than the portion and projecting toward the interior of the chamber is provided, the first ring-shaped projection and the second ring-shaped projection overlap each other, and the flow of outside air is Ventilation for supply of air by changing to the inside of the room once by the ring-shaped protrusion, and then allowing outside air to pass through the gap formed between the first ring-shaped protrusion and the second ring-shaped protrusion. It has been proposed that the inner wall surface around the mouth is not soiled.

  However, in this case, the flow path of the outside air to be supplied is bent in a zigzag shape, so that there is a problem that not only air resistance is large and wind noise is easily generated, but also it is difficult to secure the air flow rate. Moreover, if the cross section of the flow path is made large to improve the air flow characteristic, noise from the outside can easily enter the room, and conversely, the indoor environment may be deteriorated.

Utility Model Registration No. 3059356 Utility Model Registration No. 3006199

  The present invention solves the above-described problems in the conventional air supply register, can prevent contamination of the inner wall surface around the air supply vent, and yet the flow path of the supplied external air is linear, It is an object of the present invention to provide an air supply register which requires only a small air resistance, hardly generates wind noise, easily secures the air flow rate, and prevents deterioration of the indoor environment due to noise intrusion from the outside.

  In order to achieve the above object, technical measures taken by the present invention are as follows. That is, the air supply register according to the first aspect of the present invention is provided with a cylindrical main body inserted into the air supply ventilation opening from the indoor side, and attached to the main body so as to be movable in the axial direction, and in the axial direction. And a push-type lid configured to open and close the air supply path each time the air pressure operation is performed, and a flange portion formed on the indoor side end of the main body extends outwardly. On the other hand, the outer peripheral surface portion of the lid body is formed into a conical inclined surface inclined along the trumpet-shaped flange portion, and the flow of the supplied air is changed to the inner wall surface around the air supply vent The lid body has a hollow structure having a cavity between the inner surface plate and the outer surface plate, and a through hole having a smaller diameter than the cavity is formed in the inner surface plate. It is characterized by being formed into a Helmholtz resonator.

  The air supply register according to the invention described in claim 2 is characterized in that a sound absorbing material is attached to the inner surface of the cavity.

  According to the configuration of the invention described in claim 1, the flange portion formed at the indoor side end portion of the main body is formed in an outwardly expanding trumpet shape, while the outer peripheral surface portion of the lid body is along the trumpet-shaped flange portion. It is formed in a conical inclined surface that is inclined to guide the flow of the supplied air in a direction away from the inner wall surface around the air supply vent. Prevents dirt on the wall.

  Nevertheless, since the flow path of the outside air to be supplied is a linear flow path formed by the trumpet-shaped flange portion and the conical inclined surface along the flange portion, the flow path of the supplied outside air is zigzag-shaped. The air resistance is small compared with the case where the inner wall surface is prevented from being stained by bending the air, and it is difficult to generate wind noise and it is easy to secure the air flow rate.

  In addition, according to the above invention, the lid body has a hollow structure having a cavity between the inner surface plate and the outer surface plate, and the inner surface plate is formed with a through-hole having a smaller diameter than the cavity, so that the lid body has a Helmholtz resonance. The external noise that intrudes with the outside air is absorbed by the principle of the Helmholtz resonator, that is, the air in the through hole vibrates according to the frequency of the sound wave, Sound is reduced by repeating the movement of the internal air contracting and expanding like a spring, and the indoor environment can be prevented from deteriorating due to external noise intrusion.

  In particular, according to the configuration of the invention described in claim 2, since the sound absorbing material is attached to the inner surface of the cavity, a much higher sound absorbing effect can be obtained.

  1 and 2 show an example of an air supply register according to the present invention. This air supply register is attached to the air supply ventilation port 1 provided on the inner wall surface W from the indoor side, and is attached to the main body 2 so as to be movable in the axial direction. And a push-type lid 3 configured to open and close the air supply path each time a pressing operation is performed. Reference numeral 4 denotes a cylindrical shaft provided at the center of the main body 2, and a known knock mechanism including a slide shaft 5, a return spring 6, and the like provided continuously at the center of the lid 3 is incorporated. Reference numeral 7 denotes an insect repellent screen.

  The flange portion 8 formed at the indoor side end portion of the main body 2 is formed in an outwardly expanding trumpet shape. It is formed on an inclined surface. When the lid 3 is moved to the indoor side and the flow path a formed between the flange portion 8 of the main body 2 and the outer peripheral surface portion 3a of the lid 3 is opened, the flow b of the supplied air Are guided in a direction away from the inner wall surface W around the air supply vent 1 by the flange portion 8 formed in the outer trumpet shape and the conical inclined surface of the outer peripheral surface portion 3a along the flange portion 8. It is.

  The lid body 3 has a hollow structure having a cavity 9 between an inner surface plate 3b and an outer surface plate 3c. A through hole 10 having a smaller diameter than the cavity 9 is formed in the inner surface plate 3b. It is formed in the type resonator.

According to said structure, while the flange part 8 formed in the indoor side edge part of the main body 2 is formed in the outward spreading trumpet shape, the outer peripheral surface part 3a of the cover body 3 is along the said trumpet-shaped flange part 8. Since it is formed on an inclined conical inclined surface and is configured to guide the flow b of the supplied air in a direction away from the inner wall surface W around the air supply vent 1, the air supply vent 1 The contamination of the surrounding inner wall surface W can be prevented.

  Nevertheless, since the flow path a of the outside air to be supplied is a linear flow path a formed by the trumpet-shaped flange portion 8 and the conical inclined surface along the flange portion 8, the flow path of the outside air to be supplied is provided. The air resistance is small compared with the case where the inner wall surface is prevented from being soiled by bending it in a zigzag shape, wind noise is hardly generated, and the air flow rate is easily secured.

  In particular, the lid body 3 has a hollow structure having a cavity 9 between the inner surface plate 3b and the outer surface plate 3c, and the inner surface plate 3b is formed with a through hole 10 having a smaller diameter than the cavity 9, so that the lid body 3 is made of Helmholtz. Since it is formed in the type resonator, external noise that enters along with the outside air is absorbed by the principle of the Helmholtz type resonator. That is, the air in the through-hole 10 vibrates according to the frequency of the sound wave, and the sound inside the cavity 9 is reduced by repeating the motion of contracting and expanding like a spring, and noise intrusion from the outside. Can prevent the indoor environment from deteriorating.

  3 and 4 show another embodiment, which is characterized in that a sound absorbing material 11 such as glass wool is attached to the inner surface of the cavity 9 to enhance the sound absorbing effect. Since other configurations and operations are the same as those of the embodiment of FIGS. 1 and 2, the same components are denoted by the same reference numerals and description thereof is omitted.

It is a vertical side view in the channel open state of the air supply register which concerns on this invention. It is a vertical side view in the flow-path closed state of the said air supply register. It is a vertical side view in the channel open state of the air supply register which shows other embodiment of this invention. It is a vertical side view in the flow-path closed state of the said air supply register. It is a vertical side view explaining the problem of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air supply ventilation port 2 Main body 3 Cover body 3a Outer peripheral surface part 3b Inner surface board 3c Outer surface board 8 Flange part 9 Cavity 10 Through-hole W Inner wall surface a Channel b Flow of wind

Claims (2)

  A cylindrical main body inserted into the air supply ventilation port from the indoor side, and attached to the main body so as to be movable in the axial direction, and configured to open and close the air supply path each time a pressing operation is performed in the axial direction. The air supply register includes a push-type lid body, and a flange portion formed at an indoor side end portion of the main body is formed in an outwardly expanding trumpet shape, while an outer peripheral surface portion of the lid body is formed in the trumpet shape. Formed in a conical inclined surface that is inclined along the flange portion, and configured to guide the flow of the supplied air in a direction away from the inner wall surface around the air supply vent, and the lid An air supply register having a hollow structure having a cavity between an inner surface plate and an outer surface plate, a through hole having a smaller diameter than the cavity is formed in the inner surface plate, and a lid is formed in a Helmholtz resonator. .   The air supply register according to claim 1, wherein a sound absorbing material is attached to an inner surface of the cavity.

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