JP2005292183A - External wall panel of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external wall panel of an air conditioner that has large sound insulation effect for a sound from a rear plate. <P>SOLUTION: A 1st sound insulating member 5 made of foamed urethane resin, an intermediate plate 4, and a 2nd sound insulating member 6 made of glass wool are arranged between a 1st top plate 1 made of a rolled steel plate and a rear plate 2 made of a punching panel having a plurality of through holes 27. In detail, a recessed part 25 is formed in the 1st sound insulating member 5 on the side of the rear plate 2, the intermediate plate 4 is arranged on the bottom surface of the recessed part 25, and the 2nd sound insulating member 6 is arranged between the intermediate plate 4 and reverse surface 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an outer wall panel of an air conditioner.

  Conventionally, as an outer wall panel of an air conditioner, there is one described in JP-A-11-351609 (Patent Document 1).

  The outer wall panel of the air conditioner includes a front plate, a back plate, a first silencing member made of glass wool, and a second silencing member made of urethane foam resin.

  The first silencing member has a substantially rectangular parallelepiped shape, and is disposed on the front plate side between the front plate and the back plate so as to contact the front plate. The second silencing member has a substantially rectangular parallelepiped shape, and is disposed between the first silencing member and the back plate so as to contact the first silencing member and the back plate. ing.

  The outer wall panel of the air conditioner is arranged such that two different silencer members, that is, the first silencer member and the second silencer member are disposed between the front plate and the back plate. I try to improve performance.

However, the outer wall panel of the conventional air conditioner has a problem that the noise reduction effect is low because noise from the inside is reflected and reflected by the back plate.
Japanese Patent Laid-Open No. 11-351609 (FIG. 7)

  Then, the subject of this invention is providing the outer wall panel of the air conditioner with the large silencing effect with respect to the sound from a backplate.

In order to solve the above problems, the outer wall panel of the air conditioner of the present invention is
A front plate,
A back plate having a plurality of through openings;
A first silencing member disposed on the front plate side between the front plate and the back plate;
It is characterized by comprising a second silencing member arranged on the back plate side between the front plate and the back plate.

  According to the air conditioner of the present invention, noise generated from a fan or the like is effectively absorbed by the second silencing member exposed directly or indirectly to the opening. If there is no opening in the back plate, noise from the fan or the like is reflected by the back plate, and the noise cannot be reduced sufficiently.

  Moreover, the outer wall panel of the air conditioner of one embodiment is a punching panel in which the back plate has a plurality of through holes.

  According to the embodiment, since the back plate is a punching panel having a plurality of through holes, the reflected sound from the periphery of the through holes interferes and noise can be reduced. Therefore, the noise suppression effect can be increased.

  Moreover, as for the outer wall panel of the air conditioner of one Embodiment, the said back plate has a mesh member, and the mesh of this mesh member forms the said opening part.

  According to the embodiment, since the back plate has a mesh member such as a wire mesh, a resin mesh, a fiber mesh, etc., the opening area of the opening made of the mesh can be increased, and the second silencing member It is possible to increase the exposed area on the back surface of the substrate. Therefore, the noise reduction effect can be increased. Moreover, the said back plate can be manufactured simply and cheaply.

  Moreover, as for the outer wall panel of the air conditioner of one Embodiment, the intermediate board is arrange | positioned between the said 1st silencer member and the said 2nd silencer member.

  According to the above embodiment, since the intermediate plate is disposed between the first silencer member and the second silencer member, it is possible to block the sound with this intermediate plate, and the sound insulation effect of sound. Can be further improved. In addition, since the intermediate plate is disposed between the first silencing member and the second silencing member, the first silencing member and the second silencing member can be accurately disposed at a desired position. The outer wall panel can be easily manufactured, and the first silencing member and the second silencing member can be prevented from being mixed with each other, and the deterioration of the outer wall panel can be prevented.

  Moreover, as for the outer wall panel of the air conditioner of one Embodiment, the said 1st noise reduction member consists of urethane foam resin, and the said 2nd noise reduction member consists of glass wool.

  According to the embodiment, the second silencing member on the back plate side, that is, on the side where a noise source such as a fan is disposed, is made of glass wool having a large sound absorption effect, and the first sound on the front plate side. Since the silencing member is made of urethane foam resin, after the sound is efficiently absorbed by the second silencing member, the sound that could not be absorbed can be further absorbed by the first silencing member. Therefore, the external leakage of noise can be further reduced.

  Moreover, as for the outer wall panel of the air conditioner of one Embodiment, the sheet | seat member is arrange | positioned between the said 2nd noise reduction member and the said back plate.

  According to the embodiment, since the sheet member is disposed between the second silencing member and the back plate, the second silencing member comes out of the opening or the second silencing member. It is possible to prevent trash from sticking to the surface.

  Further, in the outer wall panel of the air conditioner of one embodiment, the first silencing member is made of urethane foam resin, the first silencing member has a recess on the back plate side, and the periphery of the recess The end surface of this part contacts the said back plate, and the said 2nd noise reduction member is arrange | positioned in the said recessed part.

  According to the embodiment, the first silencing member is made of urethane foam resin, the first silencing member has a recess on the back plate side, and the end surface of the peripheral portion of the recess is the above Since it is in contact with the back plate, the front plate and the back plate can be bonded together with the urethane foam resin.

  According to the outer wall panel of the air conditioner of the present invention, the noise generated from the fan or the like can be effectively absorbed by the second silencing member exposed directly or indirectly to the opening, and the back plate Therefore, it is possible to prevent the noise of the fan or the like from being reflected and reflecting the noise.

  Further, according to the outer wall panel of one embodiment, since the back plate is a punching panel having a plurality of through holes, the reflected sound from the periphery of the through holes interferes, and noise can be reduced. Thus, the noise suppression effect can be increased.

  Moreover, according to the outer wall panel of one embodiment, since the back plate has a mesh member such as a wire mesh, a resin mesh, a fiber mesh, the opening area of the opening made of the mesh can be increased, and The exposed area of the second silencing member on the back surface can be increased, and the noise reduction effect can be increased. Moreover, the said back plate can be manufactured simply and cheaply.

  Moreover, according to the outer wall panel of one embodiment, since the intermediate plate is disposed between the first silencer member and the second silencer member, it is possible to block the sound with this intermediate plate. The sound insulation effect of the sound can be further improved. In addition, the first silencing member and the second silencing member can be accurately arranged at a predetermined location, an outer wall panel can be easily manufactured, and the first silencing member and the second silencing member are mixed. It can prevent fitting and can prevent deterioration of the outer wall panel.

  Moreover, according to the outer wall panel of one embodiment, the second sound deadening member on the back plate side, that is, the side on which a noise source such as a fan is arranged is made of glass wool having a large sound absorbing effect, and the front plate Since the first silencing member on the side is made of urethane foam resin, after the sound is efficiently absorbed by the second silencing member, the sound that could not be absorbed can be further absorbed by the first silencing member. Therefore, the external leakage of noise can be further reduced.

  In addition, according to the outer wall panel of one embodiment, since the sheet member is disposed between the second silencing member and the back plate, the second silencing member comes out of the opening or the above It can be prevented that dust or the like adheres to the second silencing member and the silencing performance of the second silencing member is deteriorated.

  Moreover, according to the outer wall panel of one embodiment, the first silencing member is made of urethane foam resin, the first silencing member has a recess on the back plate side, and a portion around the recess. Since the end surface of the is in contact with the back plate, the front plate and the back plate can be integrally bonded with the urethane foam resin.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view of an outer wall panel of an air conditioner according to an embodiment of the present invention.

  The outer wall panel includes a front plate 1, a back plate 2, a resin outer frame 3, an intermediate plate 4, a first silencer member 5, and a second silencer member 6.

  The said front board 1 is comprised from the rolled steel plate. The front plate 1 has a main body portion 8 constituting the surface of the outer wall panel, and a fixing portion 9 bent from the periphery of the main body portion 8 toward the back plate 2 at a substantially right angle.

  On the other hand, the back plate 2 is composed of a punching panel having a plurality of through holes 27. The back plate 2 is disposed on the main body side of an air conditioner (not shown). The back plate 2 includes a main body portion 10 and a fixing portion 11 that is bent substantially vertically at an edge portion of the main body portion 10. The main body portion 10 of the back plate is substantially parallel to the main body portion 8 of the front plate 1.

  The outer frame 3 has an outer surface 25 having a square cross section. The outer frame 3 has a front plate mounting groove on one side in the thickness direction and a back plate mounting groove on the other side. A fixing portion 9 of the front plate 1 is press-fitted into the front plate mounting groove, and a fixing portion 11 of the back plate 2 is press-fitted into the back plate mounting groove.

  The first silencing member 5 is made of urethane foam resin. The first silencing member 5 is disposed between the front plate 1 and the back plate 2. The first silencing member 5 is adhered to the substantially entire inner surface of the front plate 1. The first silencing member 5 has a recess 25 on the back plate 2 side. An end surface 30 of the peripheral portion of the concave portion 25 of the first silencing member 5 is bonded to the inner surface of the back plate 2 opposite to the main body side of the air conditioner, and the outer surface 33 of the peripheral portion is the outer frame 3. Adhered to the entire inner surface.

  The intermediate plate 4 is composed of a rolled steel plate. The intermediate plate 4 is disposed on the bottom surface of the recess 25. The surface area of the intermediate plate 4 and the surface area of the recess 25 are substantially equal. Further, the intermediate plate 4 is substantially parallel to the main body portion 8 of the front plate 1 and the main body portion 10 of the back plate 2.

  The second silencing member 6 is made of glass wool having sound absorbing properties. The second silencing member 6 is disposed between the middle plate 4 and the back plate 2 without a gap. The surface on the back surface 2 side of the second silencing member 6 is subjected to a cross process. That is, a cloth (cloth) 29 as an example of a sheet member is disposed between the surface on the back surface 2 side of the second silencing member 6 and the inner surface of the back plate 2.

  The outer wall panel of the air conditioner of the above embodiment is formed as follows. First, after disposing liquid urethane foam resin, the middle plate 4 and glass wool at respective predetermined positions between the front plate 1 and the back plate 2, the front plate 1 and the back plate 2 are fitted into the outer frame 3. The space between the front plate 1 and the back plate 2 is sealed with an outer frame 3. Next, the liquid urethane foam resin is foamed, and the foamed urethane foam resin is adhered to the front plate 1, the back plate 2, the outer frame 3 and the middle plate 4, and the front plate 1, the back plate 2, The outer frame 3 and the middle plate 4 are integrated to complete the outer wall panel of the air conditioner.

  FIG. 2 is a diagram showing the sound pressure level of the sound passing through each of the outer wall panel of the air conditioner of the above embodiment and the outer wall panel of the conventional air conditioner with respect to the sound frequency.

  The conventional outer wall panel used for measuring the sound pressure level is the following outer wall panel. That is, the front plate and the back plate are made of a rolled steel plate having no opening, and the glass wool having a substantially rectangular parallelepiped shape is disposed on the front plate side between the front plate and the back plate. Between these, an urethane foam resin having a substantially rectangular parallelepiped shape is disposed, and the glass wool and the urethane foam resin are in direct contact with each other without an intermediate plate.

  In FIG. 2, the vertical axis represents the sound pressure level, and the horizontal axis represents the frequency. In FIG. 2, ▲ indicates the measured value of the conventional outer wall panel, and ● indicates the measured value of the outer wall panel of the embodiment.

  As shown in FIG. 2, in general, the sound pressure level decreases as the frequency increases in both the conventional and the outer wall panels of the above-described embodiment. The sound insulation effect for loud sounds is increasing. However, in the conventional outer wall panel, the sound pressure level is increased as the frequency is increased from 500 Hz to 1 kHz, and as a result, the silencing effect for the sound in the frequency range of 500 Hz to 4 kHz is lowered. ing.

  On the other hand, in the outer wall panel of the above-described embodiment, the sound pressure level decreases monotonously and rapidly as the frequency increases for sounds having a frequency of 125 Hz or higher. Therefore, if the outer wall panel of the above embodiment is adopted as the outer wall panel of the air conditioner, it is possible to increase the sound insulation effect on a wide range of frequencies including sounds having a frequency in the range of 500 Hz to 4 kHz. Thus, it is possible to remarkably suppress the noise generated by the air conditioner fan or the like from leaking outside the air conditioner.

  According to the outer wall panel of the above embodiment, the noise generated from the fan or the like is effective due to the second silencing member 6 that is indirectly exposed to the through hole 27 via the cloth (cloth) 29 as the seat member. Absorbed. If there is no opening in the back plate, noise from the fan or the like is reflected by the back plate, and the noise cannot be reduced sufficiently.

  Moreover, according to the outer wall panel of the said embodiment, since the said back plate 2 is a punching panel which has the some through-hole 27, the reflected sound from the periphery of the said through-hole 27 interferes, and noise is reduced. be able to. Therefore, the noise suppression effect can be increased.

  Moreover, according to the outer wall panel of the said embodiment, since the intermediate board 4 is arrange | positioned between the said 1st muffling member 5 and the 2nd muffling member 6, sound is interrupted | blocked by this intermediate board 4. And the sound insulation effect can be further improved. Moreover, since the intermediate plate is disposed between the first silencing member 5 and the second silencing member 6, the first silencing member 5 and the second silencing member 6 can be disposed at predetermined positions. The outer wall panel can be easily manufactured, the first silencing member 5 and the second silencing member 6 can be prevented from being mixed, and the deterioration of the outer wall panel can be prevented.

  Further, according to the outer wall panel of the above embodiment, the second silencing member 6 on the back plate 2 side, that is, the side on which a noise source such as a fan is arranged is made of glass wool having a large sound absorbing effect, Since the first silencing member 5 on the side of the plate 1 is made of urethane foam resin, after the sound is efficiently absorbed by the second silencing member 6, the sound that could not be further absorbed is the first silencing member 5. Can be absorbed. Therefore, the external leakage of noise can be further reduced.

  Moreover, according to the outer wall panel of the said embodiment, since the cloth | cross (cloth) 29 as a sheet | seat member is arrange | positioned between the said 2nd muffling member 6 and the backplate 2, the 2nd muffling member 6 is attached. Further, it is possible to prevent the second silencing member 6 from becoming dirty or the silencing performance of the second silencing member 6 from deteriorating due to getting out of the opening or adhering to the second silencing member 6.

  Moreover, according to the outer wall panel of the said embodiment, the said 1st noise reduction member 5 is urethane foam resin, the 1st noise reduction member 5 has the recessed part 25 in the backplate 2 side, and the periphery of the recessed part 25 Since the end surface 30 of this portion is in contact with the back plate 2 and the outer surface 33 of the peripheral portion of the recess 25 is in contact with the inner surface of the outer frame 3, the first silencing member 5 made of urethane foam resin is used. The front plate 1, the back plate 2, and the outer frame 3 can be bonded, and the front plate 1, the back plate 2, and the outer frame 3 can be easily integrated.

  In the outer wall panel of the above embodiment, a punching panel having a plurality of through holes 27 is adopted as the back plate 2. However, in the outer wall panel of the present invention, instead of the punching panel, a metal mesh or resin is used as the back plate. You may employ | adopt the backplate which has net members, such as a net-making and a fiber net. In this case, the opening area of the opening made of mesh can be increased and the exposed area of the second silencing member on the back surface can be increased, so that the noise reduction effect can be increased. Moreover, the said back plate can be manufactured simply and cheaply.

  In the outer wall panel of the above embodiment, the intermediate plate 4 is disposed on the bottom surface of the recess 25 of the first silencing member 5 and is not fixed to the outer frame 3. The middle plate may have a structure in which part or all of the periphery is fixed to the outer frame. Further, in the outer wall panel of the present invention, the intermediate plate may be omitted.

  Further, in the outer wall panel of the above embodiment, the cloth (cloth) 29 is employed as the sheet member. However, in the outer wall panel of the present invention, a sheet-like member having a thin thickness other than the cloth such as paper is employed as the sheet member. You may do it.

  Moreover, in the outer wall panel of the said embodiment, although the 1st muffling member 5 had the recessed part 25 and the end surface 30 of the peripheral part of the recessed part 25 was the structure in contact with the backplate 2, the outer wall panel of this invention Then, while adopting the 1st silencer member of the shape of a rectangular parallelepiped, the 2nd silencer member of the shape of a rectangular parallelepiped may be adopted, and these silencer members may be arranged between a front board and a back board.

  In the outer wall panel of the above embodiment, the first silencing member is made of urethane foam resin, the second silencing member is made of glass wool, and the first silencing member and the second silencing member are made of different materials. However, in the outer wall panel of the present invention, the first silencing member and the second silencing member may be composed of the same material. For example, both the first silencing member and the second silencing member are provided. You may comprise from glass wool etc.

  In the outer wall panel of the above embodiment, the first silencing member is made of urethane foam resin and the second silencing member is made of glass wool. In the outer wall panel of the present invention, the first silencing member is made of glass wool. And the second silencing member may be made of urethane foam resin. Further, in the outer wall panel of the present invention, the material of the first sound deadening member and the second sound deadening member is a foamed resin, resin, or rubber having soundproofness (silenced) other than urethane foamed resin and glass wool. Also good. Of course, the surface shape of the front plate of the outer wall panel of the present invention may be any shape such as a rectangle, a polygon, or a circle.

It is sectional drawing of the outer wall panel of the air conditioner of one Embodiment of this invention. It is a figure which shows the sound pressure level of the sound which passed through each said panel with respect to the frequency of sound in each of the outer wall panel of the air conditioner of the said embodiment, and the outer wall panel of the conventional air conditioner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front plate 2 Back plate 3 Outer frame 4 Middle plate 5 1st silencer member 6 2nd silencer member 25 Recessed part 27 Through-hole 29 Cross 30 End surface of the peripheral part of a recessed part

Claims (7)

Front plate (1),
A back plate (2) having a plurality of openings therethrough;
A first silencing member (5) disposed on the front plate (1) side between the front plate (1) and the back plate (2);
An outer wall panel for an air conditioner, comprising a second silencing member (6) disposed on the back plate (2) side between the front plate (1) and the back plate (2). . In the outer wall panel of the air conditioner according to claim 1,
The outer wall panel of an air conditioner, wherein the back plate (2) is a punching panel having a plurality of through holes (27). In the outer wall panel of the air conditioner according to claim 1,
The back panel includes a mesh member, and the mesh of the mesh member forms the opening, and the outer wall panel of an air conditioner. In the outer wall panel of the air conditioner according to any one of claims 1 to 3,
An outer wall panel of an air conditioner, wherein an intermediate plate (4) is disposed between the first silencing member (5) and the second silencing member (6). In the outer wall panel of the air conditioner according to any one of claims 1 to 4,
The outer wall panel of an air conditioner, wherein the first silencing member (5) is made of urethane foam resin, and the second silencing member (6) is made of glass wool. In the outer wall panel of the air conditioner according to any one of claims 1 to 5,
An outer wall panel of an air conditioner, wherein a sheet member (29) is disposed between the second silencing member (6) and the back plate (2). In the outer wall panel of the air conditioner according to claim 1,
The first silencing member (5) is made of urethane foam resin, the first silencing member (5) has a recess (25) on the back plate (2) side, and the recess (25) An air conditioner characterized in that an end surface (30) of a peripheral portion is in contact with the back plate (2), and the second silencing member (6) is disposed in the recess (25). Exterior wall panels.

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