JP2020159567A - Noise insulation cover - Google Patents

Abstract

To provide a noise insulation cover which enables reduction of operation sound of an outdoor unit with a structure that saves a space.SOLUTION: A noise insulation cover 11 is attached to a front surface 10a of an outdoor unit 10 so as to cover at least an air outlet 10c opening on the front surface 10a and includes: an inflow port 20a into which air discharged from the air outlet 10c flows; an outflow port 20b through which the air flowing from the inflow port 20a flows to the outside; and a passage 20c which extends from the inflow port 20a to the outflow port 20b so that the air meanders in a process that the air flows from the inflow port 20a and reaches the outflow port 20b.SELECTED DRAWING: Figure 5

Description

The present invention relates to a soundproof cover for an outdoor unit.

Since it is necessary for one outdoor unit for air conditioner in the entire building to correspond to one house, the operating noise is higher than the operating noise of the outdoor unit for room air conditioner. Therefore, when installing an outdoor unit for air conditioning in the entire building, the installation layout is carefully designed in consideration of the loudness of the driving noise. However, there are cases where a request for reduction of the operating noise of the outdoor unit for air conditioning in the entire building is received from the neighboring house, and it is necessary to establish measures in that case in advance.

In projects that receive a request to reduce the operating noise of the outdoor unit for air conditioning in the entire building, the space between the outdoor unit and the neighboring house is often small. Therefore, it is required to save space as a countermeasure against the operating noise of the outdoor unit for air conditioning in the entire building. In addition, when taking such measures, there may be a request to consider aesthetics.

Patent Document 1 discloses a soundproof wall provided so as to surround the outdoor unit. This soundproof wall is provided without a gap between the plurality of columns, so that the distance from the sound source to the sound receiving point is lengthened and the operating noise of the outdoor unit is attenuated.

Japanese Unexamined Patent Publication No. 2008-138438

However, in the soundproof wall disclosed in Patent Document 1, it is necessary to increase the height in order to sufficiently obtain the damping effect of the driving sound. In general houses, it is difficult to raise the soundproof wall when considering the sunshine.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a soundproof cover capable of reducing the operating noise of an outdoor unit in a space-saving configuration.

The soundproof cover according to the present invention is a soundproof cover that is attached to the front surface of the outdoor unit so as to at least cover the air outlet that opens in the front surface, and includes an inflow port into which air discharged from the air outlet flows. It is provided with an outlet in which the air flowing in from the inlet flows out to the outside, and a flow path extending from the inlet to the outlet so that the air meanders in the process from the inlet to the outlet.

According to the present invention, the operating noise of the outdoor unit can be reduced in a more space-saving configuration.

It is a front view of the outdoor unit provided with the soundproof cover which concerns on Embodiment 1. FIG. FIG. 1 is a cross-sectional view taken along the line AA of FIG. FIG. 1 is a cross-sectional view taken along the line BB of FIG. It is an enlarged view of the main part of FIG. It is an exploded perspective view of the soundproof cover which concerns on Embodiment 1. FIG. It is an exploded perspective view of the flow path structure part. It is a figure which showed the fixing structure between partition plates. It is a figure which showed the fixing structure of a partition plate and a side plate. It is a figure which showed the fixing structure of a partition plate and a bottom plate. It is a figure which showed the fixing structure of a partition plate and a front cover. It is a figure which showed the fixed structure of a flow path structure part and a sound absorbing member. It is a figure which showed the fixed structure of a flow path structure part and a frame. It is an exploded perspective view of the soundproof cover which concerns on Embodiment 2. FIG.

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

Embodiment 1.
The soundproof cover according to the first embodiment will be described with reference to FIGS. 1 to 12.

FIG. 1 is a front view of an outdoor unit provided with a soundproof cover according to the first embodiment. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a cross-sectional view taken along the line BB of FIG. FIG. 4 is an enlarged view of a main part of FIG. The two-dot chain line shown in FIGS. 1 to 4 indicates the flow of air discharged from the outdoor unit and its operating sound.

The soundproof cover 11 according to the first embodiment is applied to, for example, the outdoor unit 10 for air conditioning in the entire building. The soundproof cover 11 is attached to the front surface 10a of the outdoor unit 10.

The outdoor unit 10 has a built-in fan and compressor (both not shown). The outdoor unit 10 has an air outlet 10c and a suction port (not shown) corresponding to the fan. The air outlet 10c is open to the front surface 10a of the outdoor unit 10. The suction port is open to the rear surface 10b of the outdoor unit 10. When the fan is driven, the outdoor unit 10 exchanges heat with the air sucked from the suction port, and then discharges the heat-exchanged air from the air outlet 10c into the soundproof cover 11.

The soundproof cover 11 reduces the operating noise of the outdoor unit 10. Examples of the operating sound of the outdoor unit 10 include a fan driving sound and a compressor driving sound. Such operating noise propagates in the atmosphere together with the flow of air discharged from the air outlet 10c to the outside of the outdoor unit 10. On the other hand, the soundproof cover 11 reduces the operating noise of the outdoor unit 10 by allowing the air discharged from the air outlet 10c to pass through the inside of the soundproof cover 11 and then flowing out to the outside. It is possible.

FIG. 5 is an exploded perspective view of the soundproof cover according to the first embodiment. FIG. 6 is an exploded perspective view of the flow path structure portion.

The soundproof cover 11 includes a flow path structure portion 20, a sound absorbing member 41, and a frame 51. The flow path structure portion 20 and the sound absorbing member 41 are fixed to the front surface 10a of the outdoor unit 10 via the frame 51.

The flow path structure portion 20 is arranged so as to face the front surface 10a so as to cover the air outlet 10c from at least the outside thereof. In general, sound becomes smaller and smaller as its propagation distance increases. Therefore, the flow path structure unit 20 reduces the operating noise of the outdoor unit 10 by lengthening the distance through which the air flowing from the outdoor unit 10 flows and prolonging the propagation distance of the operating sound propagating. ..

FIG. 7 is a diagram showing a fixed structure between the partition plates. FIG. 8 is a diagram showing a fixed structure of the partition plate and the side plate. FIG. 9 is a diagram showing a fixed structure between the partition plate and the bottom plate. FIG. 10 is a diagram showing a fixed structure of the partition plate and the front cover. FIG. 11 is a diagram showing a fixed structure of the flow path structure portion and the sound absorbing member. FIG. 12 is a diagram showing a fixed structure of the flow path structure portion and the frame.

The flow path structure portion 20 includes an inflow port 20a, an outflow port 20b, a flow path 20c, a front cover 21, a pair of left and right side plates 22, a bottom plate 23, partition plates 24 to 26, a guide plate 27, and a guide member 28. Have.

As shown in FIG. 6, the front cover 21 is located on the most front side among the members constituting the soundproof cover 11. The front cover 21 has an L-shaped vertical cross section. The side plates 22 are fixed to both sides of the front cover 21 in the width direction. The bottom plate 23 is fixed to the lower end of each side plate 22. As a result, as shown in FIGS. 2 and 3, the flow path structure portion 20 has an inflow port 20a that opens to the rear portion and an outflow port 20b that opens between the rear surface of the front cover 21 and the front end of the bottom plate 23. are doing.

The inflow port 20a allows the air discharged from the air outlet 10c to flow into the flow path structure portion 20. The outflow port 20b is open toward the lower side of the flow path structure portion 20, and allows the air that has flowed into the flow path structure portion 20 to flow out of the flow path structure portion 20.

As shown in FIGS. 2, 3, 6 to 10, the partition plates 24 to 26 flow from the outlet 20b side in the internal space partitioned by the front cover 21, each side plate 22, and the bottom plate 23. They are provided in order toward the entrance 20a side. The partition plates 24 to 26 have a flat plate shape, and are arranged so that the facing surfaces are substantially parallel to each other. The number of partition plates may be any number as long as the flow path 20c described later can be formed.

The partition plates 24 and 26 are fixed to the inner surface of each side plate 22 and the upper surface of the bottom plate 23. The partition plate 25 is fixed to the ceiling surface of the front cover 21 and is fixed to the inner surface of each side plate 22 via the angle members 31 and 32. At this time, a gap is formed between the upper end of the partition plate 24 and the ceiling surface of the front cover 21. A gap is formed between the lower end of the partition plate 25 and the upper surface of the bottom plate 23. A gap is formed between the upper end of the partition plate 26 and the ceiling surface of the front cover 21.

As a result, as shown in FIGS. 2 and 3, the flow path structure portion 20 has the flow path 20c by forming the above-described configuration. The flow path 20c is formed between the inflow port 20a, the gap space formed between the partition plates 25 and 26, the gap space formed between the partition plates 24 and 25, and between the front cover 21 and the partition plate 24. It leads to the outflow port 20b through the formed gap space.

The flow path 20c meanders the air flowing in from the inflow port 20a alternately in the vertical direction, and then discharges the air from the outflow port 20b. Therefore, the flow path 20c can have a longer air flow distance than the flow path in which the inflowing air is allowed to flow out without meandering. As a result, the flow path 20c can increase the propagation distance of the operating sound of the outdoor unit 10 propagating along with the air flow, so that the operating sound can be attenuated and reduced.

The flow path 20c may be formed so that air (operating noise) meanders in the process from the inflow port 20a to the outflow port 20b, and the flow path causes the air to meander alternately in the vertical direction of the flow path structure portion 20. It is not limited to the road structure. The flow path 20c may be, for example, a flow path structure in which air meanders alternately in the width direction or the front-rear direction of the flow path structure portion 20.

Further, as shown in FIGS. 7 to 10, the flow path 20c may have a plurality of reinforcing members 33 in order to secure the flow path cross section of the flow path 20c. The reinforcing member 33 reinforces the front cover 21 and the partition plates 24 to 26. The reinforcing member 33 is, for example, between the rear surface of the front cover 21 and the front surface of the partition plate 24, between the rear surface of the partition plate 24 and the front surface of the partition plate 25, and between the rear surface of the partition plate 25 and the front surface of the partition plate 26. It is provided between the space and the rear surface of the partition plate 26.

As shown in FIGS. 1, 3 to 5, the guide plate 27 is attached to the outlet 20b. The guide plate 27 has a guide surface 27a constituting the first guide surface. The guide surface 27a is an inclined surface that is inclined with respect to the vertical plate portion of the front cover 21, and guides the air flowing out from the outlet 20b while rectifying it toward the rear side of the outlet 20b. is there. As a result, the guide surface 27a can allow the air flowing out from the outflow port 20b to flow in a direction away from the sound receiving point of the neighboring house or the like. The rear side of the outlet 20b is the rear side of the soundproof cover 11 when the soundproof cover 11 is viewed from the front and the soundproof cover 11 is divided into a front side and a rear surface side.

As shown in FIGS. 1, 3 and 4, the guide member 28 is provided on the guide surface 27a of the guide plate 27. The guide member 28 has guide surfaces 28a forming the second guide surface on both the left and right sides. The guide surface 28a is an inclined surface that is inclined with respect to the opening end of the outlet 20b, and guides the air flowing along the guide surface 27a toward the outside in the width direction of the outlet 20b. The width direction outside of the outlet 20b is the width direction outside of the soundproof cover 11 when the soundproof cover 11 is viewed from the front.

Here, the outdoor unit 10 exchanges heat with the air sucked from the suction port during the heating operation, and discharges the air after the heat exchange from the air outlet 10c at a temperature lower than the atmospheric temperature. .. As a result, the air flowing out from the outlet 20b becomes air having a relatively low temperature.

On the other hand, the guide member 28 causes the air flowing out from the outlet 20b to flow toward the outside in the width direction of the outlet 20b, that is, the outside in the width direction of the outdoor unit 10 during the heating operation of the outdoor unit 10. Can be done. As a result, the guide member 28 can suppress the suction of cold air from the suction port of the outdoor unit 10. As a result, the guide member 28 can improve the heat exchange efficiency (heating efficiency) of the outdoor unit 10.

As shown in FIGS. 1 to 3, 5 and 11, the sound absorbing member 41 is a member that absorbs sound when air passes through the interior. The sound absorbing member 41 absorbs sound by, for example, converting a part of sound energy into heat energy. The sound passing through the sound absorbing member 41 is reduced by being absorbed by the sound absorbing member 41.

The sound absorbing member 41 is made of a porous material such as glass wool, but may be made of any material as long as it can absorb sound. The sound absorbing member 41 is housed and held in the inflow port 20a of the flow path structure portion 20 and faces the air outlet 10c of the outdoor unit 10. The sound absorbing member 41 is fixed to the inner surface of each side plate 22 via brackets 42 provided on both sides in the width direction. The two brackets 42 are connected by two connecting members 43. The soundproof cover 11 may not be provided with the sound absorbing member 41.

As shown in FIGS. 1 to 3, 5, 6, and 12, the frame 51 fixes the flow path structure portion 20 and the sound absorbing member 41 to the front surface 10a of the outdoor unit 10. Although the frame 51 is fixed to the front surface 10a of the outdoor unit 10 via the brackets 52 and 53, it may be directly fixed to the front surface 10a. The opening 51a of the frame 51 faces the air outlet 10c of the outdoor unit 10 and the sound absorbing member 41.

Therefore, the air discharged from the air outlet 10c of the outdoor unit 10 flows into the flow path 20c from the inflow port 20a of the flow path structure portion 20 via the sound absorbing member 41. At this time, the sound absorbing member 41 absorbs the operating sound of the outdoor unit 10 propagating along with the flow of the air when the air passes through the inside.

Next, the air that has passed through the sound absorbing member 41 flows in the flow path 20c while alternately meandering in the vertical direction, and then flows out from the outlet 20b. At this time, since the flow path structure portion 20 increases the length of the flow path 20c, the operating noise of the outdoor unit 10 propagating along with the air flow is attenuated and reduced in the flow path 20c.

Then, the air flowing out from the outlet 20b flows toward the rear side of the outlet 20b by the guide surface 27a of the guide plate 27. Further, the air flowing along the guide surface 27a flows toward the outside in the width direction of the outlet 20b.

When the outdoor unit 10 is provided with a plurality of air outlets 10c, the soundproof cover 11 is provided corresponding to each air outlet 10c. Further, the soundproof cover 11 is attached so as to face the front surface 10a of the outdoor unit 10 and cover the air outlet 10c from at least the outside thereof, but cover the entire front surface 10a of the outdoor unit 10 from the outside. It doesn't matter. In this case, the soundproof cover 11 can also reduce the driving noise of the compressor built in at a position away from the air outlet 10c.

In addition, when the outdoor unit 10 is installed, some neighbors feel intimidating just by looking at the outdoor unit 10 and are concerned about the driving noise. However, by making the color of the soundproof cover 12 match the color of the outer wall of the house, the soundproof cover 12 can be attached to the outdoor unit 10 without spoiling the aesthetic appearance of the house.

From the above, the soundproof cover 11 according to the first embodiment is a soundproof cover 11 attached to the front surface 10a of the outdoor unit 10 so as to at least cover the air vent 10c opened in the front surface 10a, and is the air vent 10c. The inflow port 20a into which the air discharged from the inflow port 20a flows in, the outflow port 20b in which the air flowing in from the inflow port 20a flows out to the outside, and the flow path so that the air meanders in the process from the inflow port 20a to the outflow port 20b. It is provided with a flow path 20c extending from the inlet 20a to the outlet 20b. As a result, the soundproof cover 11 can reduce the operating noise of the outdoor unit 10 in a more space-saving configuration.

The flow path 20c is formed by a plurality of partition plates 24 to 26. As a result, the soundproof cover 11 can easily increase the propagation distance of the operating sound of the outdoor unit 10.

The soundproof cover 11 includes a guide surface 27a that guides the air flowing out from the outlet 20b toward the rear side of the outlet 20b. As a result, the soundproof cover 11 can flow the operating sound of the outdoor unit 10 in a direction away from the sound receiving point of the neighboring house or the like.

The soundproof cover 11 includes a guide surface 28a that guides the air flowing along the guide surface 27a toward the outside in the width direction of the outlet 20b. As a result, the soundproof cover 11 can improve the heat exchange efficiency of the outdoor unit 10 during the heating operation.

The soundproof cover 11 includes a sound absorbing member 41 arranged so as to face the inflow port 20a. The sound absorbing member 41 absorbs sound when the air flowing into the inflow port 20a passes through. The air that has flowed into the inflow port 20a flows out from the outflow port 20b through the sound absorbing member 41 and the flow path 20c. As a result, the soundproof cover 11 can absorb or reduce the operating noise of the outdoor unit 10 propagating with the air flow by the sound absorbing member 41.

Embodiment 2.
The soundproof cover according to the second embodiment will be described with reference to FIG. FIG. 13 is an exploded perspective view of the soundproof cover according to the second embodiment.

The soundproof cover 12 according to the second embodiment is attached to the front surface 10a of the outdoor unit 10. The soundproof cover 12 according to the second embodiment includes a front cover 21A, a guide plate 27, a sound absorbing member 41, a frame 51A, and an outlet 61. That is, the soundproof cover 12 does not include the flow path 20c of the flow path structure portion 20.

The sound absorbing member 41 is fixed to the rear surface of the front cover 21A so as to form a predetermined amount of gap between the front cover 21A and the rear surface. As a result, the outlet 61 of the soundproof cover 12 is formed between the rear surface of the front cover 21A and the lower side of the front surface of the sound absorbing member 41. Therefore, the operating sound of the outdoor unit 10 is absorbed when it passes through the sound absorbing member 41.

From the above, the soundproof cover 12 according to the second embodiment can reduce the operating noise of the outdoor unit 10 in a more space-saving configuration.

In the present invention, within the scope of the invention, any combination of embodiments, modification of any component in each embodiment, or omission of any component in each embodiment can be omitted. It is possible.

10 Outdoor unit 10a Front surface 10b Rear surface 10c Blowers 11, 12 Soundproof cover 20 Flow path structure 20a Inflow port 20b, 61 Outlet 20c Flow path 21,21A Front cover 22 Side plate 23 Bottom plate 24-26 Partition plate 27 Guide plate 28 Guide Members 27a, 28a Guide surfaces 31, 32 Angle members 33 Reinforcing members 41 Sound absorbing members 43 Connecting members 51, 51A Frame 51a Openings 42, 52, 53 Brackets

Claims (5)

A soundproof cover that is attached to the front surface of the outdoor unit so as to cover at least the air outlet that opens in the front surface.
An inflow port into which the air discharged from the air outlet flows in, and
An outlet from which the air flowing in from the inlet flows out to the outside,
A soundproof cover provided with a flow path extending from the inlet to the outlet so that air meanders in the process from the inlet to the outlet. The soundproof cover according to claim 1, wherein the flow path is formed by a plurality of partition plates. The soundproof cover according to claim 1 or 2, further comprising a first guide surface for guiding the air flowing out from the outlet toward the rear side of the outlet. The soundproof cover according to claim 3, further comprising a second guide surface that guides the air flowing along the first guide surface toward the outside in the width direction of the outlet. It is provided with a sound absorbing member which is arranged so as to face the inflow port and absorbs sound when the air flowing into the inflow port passes through.
The soundproofing according to any one of claims 1 to 4, wherein the air flowing into the inflow port flows out from the outflow port through the sound absorbing member and the flow path. cover.

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