JP2010071566A - Sound absorbing blower and air conditioner outdoor unit having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor unit having a mechanism capable of effectively reducing noise generated by a blower without a large cost burden in comparison with conventional technology, and to provide an air conditioner equipped with the outdoor unit. <P>SOLUTION: The air conditioner comprises the outdoor unit and an indoor unit, and the outdoor unit includes an outdoor unit body housing a heat exchanger and equipped with an air suction part, the blower, a first sound absorbing type flow path being a flow path of air provided between the blower and the outdoor unit body and having a flow path side wall composed of a layer of sound absorbing material, and a second sound absorbing type flow path being a flow path of air provided so as to hold the blower with the first sound absorbing type flow path and having a flow path side wall composed of a layer of sound absorbing material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner, and an air conditioner composed of an outdoor unit and an indoor unit, and in particular, an outdoor unit including a mechanism for effectively reducing noise caused by a blower, and the outdoor unit The present invention relates to an air conditioner comprising a machine and an indoor unit.

  Air conditioners composed of outdoor units and indoor units are widely used for business use and home use. The outdoor unit of the air conditioner includes a compressor, a heat exchanger, a blower, and the like, and is configured to change the gaseous refrigerant that has moved from the indoor unit into a liquid and send it to the indoor unit again. Specifically, after the gaseous refrigerant that has moved from the indoor unit is compressed by the compressor, it is changed to a liquid by being cooled by the heat exchanger. At this time, the blower is configured to continue sending air to the heat exchanger.

  Here, the outdoor unit has a problem of noise. In particular, when a large number of large-sized business outdoor units are installed in one place, it becomes a significant problem. For example, in a building having an Internet data center with a large number of servers, it is necessary to keep the server room cooled in order to operate the computer normally. Therefore, it is necessary to use a large amount of air conditioners, and as a result, a large number of outdoor units are installed together on the roof of a building. In addition, in buildings and facilities where a large amount of air conditioners need to be used, a large number of outdoor units may be installed together in one place such as a rooftop.

  The noise generated by the outdoor unit is composed of a plurality of elements such as the sound generated by the compressor and the sound generated by the blower. In particular, the sound generated by the blower is a major factor. This is because the space in which the blower is arranged needs to be connected to the external space of the outdoor unit because of the function of the blower, so that the sound generated by the blower leaks to the outside of the outdoor unit. That is, it is possible to effectively reduce the noise of the outdoor unit by reducing the noise caused by the blower.

  Conventionally, as a means for reducing noise caused by a blower of an outdoor unit, a means of installing a silencer on the exhaust side of the blower has been used as shown in FIG. The silencer is, for example, one in which a wind flow path is installed on the exhaust side of a blower and the side walls of the flow path are made of a sound absorbing material. By this means, it is possible to reduce the noise of the blower that leaks to the exhaust side of the blower. However, this means cannot reduce the noise of the blower that leaks to the intake side of the blower. As a result, the noise of the blower that has leaked to the intake side of the blower has leaked from the air suction portion provided on the side surface of the main body of the outdoor unit to the external space of the outdoor unit. That is, the above-mentioned means alone cannot sufficiently solve the problem of noise caused by the blower.

  Therefore, as other means, as shown in FIG. 2, means for surrounding the space where the outdoor unit is installed with a sound deadening wall or a sound deadening ceiling is used. By such means, the sound emitted by the blower of the outdoor unit is confined in the space surrounded by the sound deadening wall and the sound deadening ceiling, and it is possible to prevent the sound from leaking to the surroundings. However, there is a problem that the means is expensive. In particular, the problem is remarkable when a large number of outdoor units are installed.

In addition, in order to solve the noise problem of an outdoor unit, many inventions are made, for example, the thing like patent document 1 and patent document 2 is made | formed. However, since they solve the problem by the characteristic structure of the outdoor unit itself, there is a problem that it cannot be implemented using an existing outdoor unit. That is, the user has to replace the outdoor unit, and the burden of the cost is large. The above problem is particularly remarkable when a large amount of outdoor units are installed.
JP-A-10-238817 JP2003-35437

  Accordingly, the present invention provides an outdoor unit having a mechanism capable of effectively reducing noise generated by the blower without incurring a large cost burden as compared with the prior art, and an air conditioner including the outdoor unit. The task is to do. It is another object of the present invention to provide a remodeling method for installing the noise reduction mechanism in an existing outdoor unit.

  As means for solving the above problems, the following inventions are provided.

  In 1st invention, it is an air conditioner which consists of an outdoor unit and an indoor unit, Comprising: The said outdoor unit accommodates the heat exchanger, and was equipped with the outdoor unit main body provided with the air suction part, the air blower, the air blower, and the outdoor unit main body And an air flow path provided between the first and the second sound-absorbing flow paths, the side walls of the flow path having a sound-absorbing material layer.

  The second invention is based on the first invention, and the outdoor unit is an air flow path provided so as to sandwich the blower together with the first sound absorption type flow path, and the side wall of the flow path is a layer of a sound absorbing material. Provided is an air conditioner having a configured second sound absorption type flow passage.

  In the third invention, the outdoor unit described in the first invention or the second invention is provided.

  In the fourth invention, a method for remodeling an outdoor unit in which a blower is installed in an outdoor unit body including a heat exchanger, a removal step of removing the blower from the outdoor unit body, an air flow path, and a flow path side wall A first sound-absorbing flow passage installed in the outdoor unit main body, and a first sound-absorbing flow passage installed in the first sound-absorbing flow passage installation step. An air blower installation step for installing a blower is provided.

  In the fifth invention, the second sound-absorbing flow passage, which is based on the fourth invention and is an air flow passage, and in which the flow passage side wall is constituted by a layer of a sound-absorbing material, is provided in the first sound-absorbing flow passage installation step. Provided is a method for remodeling an outdoor unit having a second sound absorption type flow passage installation step that is installed so as to sandwich the blower installed in the blower installation step together with the installed first sound absorption type flow passage.

  According to a sixth aspect of the present invention, there is provided a computer building including 30 or more outdoor units according to the third aspect, and a rooftop having no sound deadening wall and sound deadening ceiling.

  According to a seventh aspect of the present invention, there is provided a sound absorption type blower comprising a blower, a first sound absorption type flow passage described in the first invention, and a second sound absorption type flow passage described in the second invention.

  With the outdoor unit and the air conditioner composed of the outdoor unit and the indoor unit of the present invention, it is possible to effectively solve the noise problem caused by the blower without imposing a large cost burden as compared with the prior art.

  Further, according to the method for remodeling an outdoor unit of the present invention, it is possible to solve the noise problem caused by the blower of the outdoor unit by replacing an already installed outdoor unit and without modifying a large cost.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to these embodiment at all, and can be implemented with various aspects in the range which does not deviate from the summary.

In addition, the relationship between the following embodiment and a claim is as follows. The first embodiment will mainly describe claims 1, 2, 3, 7 and the like. The second embodiment will mainly describe claims 4 and 5. The third embodiment will mainly describe claim 6 and the like.
<< Embodiment 1 >>
<Outline of Embodiment 1>

  An example of the outdoor unit of the air conditioner of this embodiment is shown in the schematic diagram of FIG. In addition, the outdoor unit of a figure is an example, and the number of blowers, the shape of an outdoor unit, etc. are not restrict | limited to these.

  The outdoor unit of the present embodiment is characterized by a blower (0302) and its proximity equipment (0303, 0304). FIG. 4 shows a schematic diagram in which only the characteristic part (blower and its adjacent equipment) of the outdoor unit of the present embodiment is extracted.

  As shown in FIG. 4, the outdoor unit of the present embodiment is provided with a flow passage serving as an air passage on the exhaust side (upper side in the figure) and the intake side (lower side in the figure) of the blower (0402). Yes. And the side wall of the said flow path is comprised with the layer of the sound-absorbing material. The flow passage on the exhaust side (upper side in the figure) is opened to the atmosphere, and the flow path on the intake side (lower side in the figure) is configured to be connected to the outdoor unit main body.

With this configuration, the outdoor unit of the present embodiment is configured such that the sound leaked to the exhaust side (upper side in the figure) of the sound generated by the blower (0402) is also on the intake side (lower side in the figure). The leaked sound can be absorbed by the sound absorbing material. As a result, the conventional technology that the sound leaked from the intake side (lower side in the figure) of the blower (0402) leaks from the “air suction part” provided on the side of the outdoor unit or the like through the outdoor unit. It is configured to be able to solve the problems.
<Functional configuration of Embodiment 1>

  The air conditioner of this embodiment is composed of an outdoor unit and an indoor unit. The outdoor unit and the indoor unit are connected by a pipe or the like.

  As shown in the schematic diagram of FIG. 3, the outdoor unit of the present embodiment includes an outdoor unit body (0301), a blower (0302), a first sound absorption flow passage (0303), and the like. Moreover, you may provide the 2nd sound absorption type flow path (0304). Hereinafter, each configuration will be described in detail.

  The “outdoor unit main body” (0301) is configured to house a heat exchanger (not shown) and to include an air suction portion (0305). The “heat exchanger” housed in the outdoor unit main body (0301) cools the gaseous refrigerant that has moved from the indoor unit and changes it into a liquid. In addition, the “air suction part” (0305) provided in the outdoor unit main body (0301) is configured to suck air from the external space of the outdoor unit main body (0301) in order to cool the heat exchanger. . The heat exchanger and the air suction unit (0305) can be realized using conventional technology. Further, the material and manufacturing method of the outdoor unit main body (0301), the shape and size of the outdoor unit main body (0301), and the like are arbitrary design items that can be realized using the conventional technology.

  Here, in the outdoor unit main body (0301), other devices such as a compressor may be stored in the same manner as in the related art. However, housing other devices such as a compressor is not an essential component for the outdoor unit body (0301) of the present embodiment. For example, as an example of not storing the compressor, the compressor is stored in a place other than the outdoor unit body (0301), and the compressor and the heat exchanger stored in the outdoor unit body (0301) are used. Connect with pipes. And you may comprise so that the gaseous refrigerant which has moved from the indoor unit may move to the heat exchanger accommodated in the outdoor unit main body (0301) via the compressor.

  That is, the outdoor unit main body (0301) of the present embodiment has an essential component to house a “heat exchanger” that requires the presence of the blower (0302) and the air suction unit (0305), and other equipment. Whether or not to store the compressor (such as a compressor) is an arbitrary design matter.

  The “blower” (0302) is configured to send air (wind) to a heat exchanger (not shown) housed in the outdoor unit body (0301). Specifically, the blower (0302) is configured to suck air from the internal space of the outdoor unit body (0301) and discharge the air to the external space of the outdoor unit body (0301). With this configuration, while the blower (0302) is driven, the air suction portion (0305) provided in the outdoor unit main body (0301) sucks air into the internal space of the outdoor unit main body (0301). And a heat exchanger will be cooled with the air which the air suction part (0305) inhaled in the outdoor unit main body (0301).

  Note that the above is an example, and the blower (0302) may be configured to suck air from the external space of the outdoor unit main body (0301) and send air to the internal space of the outdoor unit main body (0301). In such a case, the air suction portion (0305) provided in the outdoor unit main body functions to discharge the air in the internal space of the outdoor unit main body (0301) to the external space of the outdoor unit main body (0301).

  The following description will be made on the assumption that the blower (0302) sucks air from the internal space of the outdoor unit main body (0301) and discharges air to the external space of the outdoor unit main body (0301).

  Here, the shape, size, number, material, manufacturing method, and the like of the blower (0302) are arbitrary design items that can be realized using the conventional technology. Further, the position where the blower (0302) is installed in the outdoor unit is not particularly limited, and may be installed on the upper side of the outdoor unit main body (0301) as shown in FIG. 3, or on the side surface side of the outdoor unit main body (0301). It may be installed in any other design.

  The “first sound absorption flow passage” (0303) is an air flow passage provided between the blower (0302) and the outdoor unit main body (0301), and the side wall of the flow passage is composed of a layer of a sound absorbing material. ing. That is, the blower (0302) sucks the air in the outdoor unit main body (0301) via the first sound absorption flow passage (0303).

  Here, FIG. 5 shows an example of a cross-sectional conceptual diagram of the “first sound absorbing flow passage”. As shown in the figure, the first sound absorbing flow passage (0503) corresponds to an inner space surrounded by a layer (0506) of a sound absorbing material configured in a donut shape. That is, the side wall of the first sound absorbing flow passage (0503) is constituted by a layer (0506) of a sound absorbing material. The shape of the first sound absorption type flow passage (0503) is an arbitrary design matter, and for example, as shown in FIG. 5A, the shape may be a cylindrical shape having a substantially circular cross section. As shown in (B), it may be a hexagonal column shape with a hexagonal cross section, or other shapes.

  The material of the “sound absorbing material” layer constituting the side wall of the first sound absorbing flow passage (0503) preferably has water repellency, and for example, water repellent glass wool can be used. The reason why water repellency is required is that the outdoor unit is installed outside the ceiling or the like. Therefore, when installing an outdoor unit in a place such as a ceiling, the sound absorbing material may not have water repellency. The means for generating the sound absorbing material layer using the material as described above can be realized by using conventional techniques. The thickness and height of the sound absorbing material layer (0506) are optional design items.

  Here, it is desirable that the sound absorbing material (0506) constituting the side wall of the first sound absorbing flow passage (0503) be protected from the external environment. Although it does not restrict | limit especially as the aspect, For example, as shown to FIG. 5 (A) and (B), you may make it the structure which wound steel plates, such as a Galvalume steel plate (0507), on the outer periphery of the layer of a sound-absorbing material. . That is, a structure in which a layer of a sound deadening material is accommodated in an internal space of a cylindrical galvalume steel plate may be used.

  Alternatively, as shown in FIG. 6A, a box-like object having an internal space made of a steel plate such as a galvalume steel plate, and holes (0607A, 0607B) serving as air passage openings on two surfaces therein. ) Is generated. And you may make it the structure which accommodates a sound-absorbing material as shown in FIG.6 (B) in the internal space of the said box-shaped object (FIG.6 (A)) (FIG.6 (C)). In FIG. 6C, two holes (0607A, 0607B) provided in the steel plate and two open ends (0606A, 0606B) of the first sound absorption type flow passage (0604) are connected. The region where the sound absorbing material is not arranged in the internal space of the box-shaped object made of a steel plate may be configured to be filled with air without being particularly filled with any material.

  Alternatively, the box-shaped object that is formed from a steel plate such as a galvalume steel plate is not configured to have a size that can accommodate only one first sound-absorbing flow passage (0606) as shown in FIG. “Blower”, “first sound absorption type flow passage” and “second sound absorption type flow passage” are configured to be large enough to be stored together, and they are stored together in a box-shaped object. Also good.

  In addition, the box-shaped object that is made from steel plate such as Galvalume steel plate is stored in a set of multiple sets consisting of "blower", "first sound absorption type flow passage" and "second sound absorption type flow passage". You may make it the magnitude | size which can be made, and you may make it accommodate these in a box-shaped object collectively (refer FIG. 7).

  In addition, about the means to produce | generate a cylindrical thing, the said box-shaped thing, etc. with a galvalume steel plate, it can implement | achieve using a prior art.

  Of the sound generated by the blower by the layer (0506) of the sound absorbing material constituting the side wall of the first sound absorbing flow passage (0503), the sound entering the first sound absorbing flow passage (0503), that is, Sound that has moved toward the inside of the outdoor unit main body is absorbed.

  The “second sound absorption type flow passage” (0304) is a flow passage provided so as to sandwich the blower (0302) together with the first sound absorption type flow passage (0303), and the side wall of the flow passage is constituted by a layer of a sound absorbing material. Has been. That is, the blower (0302) discharges the air sucked from the outdoor unit main body (0301) via the second sound absorption type flow passage (0304).

  The configuration of the second sound absorption type flow passage (0304) is the same as that of the first sound absorption type flow passage described with reference to FIG. 5, and a detailed description thereof will be omitted here. As shown in FIG. 3, the second sound absorption flow passage (0304) is provided so as to sandwich the blower (0302) together with the first sound absorption flow passage (0303).

  Of the sound emitted by the blower (0302) by the sound absorbing material layer constituting the side wall of the second sound absorbing flow passage (0304), the sound entering the second sound absorbing flow passage (0304), that is, Sound that has moved toward the outside of the outdoor unit is absorbed.

That is, the outdoor unit (refer to FIG. 3) of the present embodiment is the sound that has moved toward the inside of the outdoor unit body (0301) among the sounds emitted by the blower (0302) (moves downward in the figure). The north sound) is absorbed by the sound absorbing material layer constituting the side wall of the first sound absorbing flow passage (0303) and moved toward the outside of the outdoor unit (moved upward in the figure). Sound) is absorbed by the layer of the sound absorbing material that forms the side wall of the second sound absorbing flow passage (0304). In addition, it is desirable that the side wall of the space where the blower (0302) is located is also composed of a sound absorbing material layer.
<Implementation example of Embodiment 1>

FIG. 7 shows a schematic diagram of an example of realizing the outdoor unit of the present embodiment. The outdoor unit in FIG. 7 has two blowers installed for one outdoor unit main body (0701). In addition, a first sound absorption flow passage (0703) and a second sound absorption flow passage (0704) are provided so as to sandwich each of the two blowers. The first sound-absorbing flow passage (0703) and the second sound-absorbing flow passage (0704) form an inner space of a layer (0706) made of a sound deadening material (water repellent glass wool). The sound deadening material layer (0706) is a box-shaped object formed of galvanium steel plates, and two surfaces (upper and lower surfaces in the figure) are provided with holes serving as air passage openings. It is stored in the internal space of the stack (0707). Two holes (upper and lower surfaces in the figure) of the box-shaped object (0707) formed of the galvanium steel plate are provided on each surface, and each hole has a first sound absorption. It is connected to the open end of the mold flow passage (0703) or the second sound absorption flow passage (0704). That is, the blower (0702) is connected to the internal space of the outdoor unit main body (0701) through the hole of the box-shaped object (0707) formed of the first sound absorption flow passage (0703) and the galvanium steel plate. Moreover, it connects with external space through the hole of the box-shaped thing (0707) formed with the 2nd sound absorption type flow path (0704) and the galvanium steel plate. The blower (0702) is fixed at a predetermined position by a fixing mechanism (not shown).
<Effect of Embodiment 1>

The outdoor unit of the present embodiment and the air conditioner including the outdoor unit can effectively solve the noise problem of the outdoor unit.
<< Embodiment 2 >>
<Outline of Embodiment 2>

The remodeling method of the outdoor unit of the present embodiment is a remodeling method for solving the noise problem of the outdoor unit in which the blower is installed, and is configured to be usable for an existing outdoor unit. Yes.
<Functional configuration of Embodiment 2>

  The remodeling method of the outdoor unit of the present embodiment is a remodeling method of the outdoor unit in which the blower is installed in the outdoor unit main body including the heat exchanger, and as shown in the flowchart of FIG. 8, “removal step” (S0801) and , “First sound absorption type flow passage installation step” (S0802) and “blower installation step” (S0803). Moreover, you may have a "2nd sound absorption type flow path installation step" (S0804). Hereinafter, each step will be described.

  “Removal step” (S0801) is a step of removing the blower from the outdoor unit main body. The blower is usually provided on an upper surface or a side surface of the outdoor unit body in order to discharge air in the internal space of the outdoor unit body to the external space. That is, after removing the blower, the surface where the blower is installed, such as the upper surface and the side surface of the outdoor unit main body, is in a state where the portion where the blower is installed is open.

  This step can be realized by a process such as removing a bolt or cutting a steel plate as necessary.

  The “first sound absorption type flow passage installation step” (S0802) is a step of installing in the outdoor unit main body a first sound absorption type flow passage that is an air flow passage and in which the flow passage side wall is configured by a layer of a sound absorbing material. . “The first sound-absorbing flow passage, which is an air flow passage and the side wall of the flow passage is constituted by a layer of a sound-absorbing material”, has the same concept as that described in the first embodiment, and is not described here. To do.

  In the first sound absorption type flow passage installation step, the “layer of sound absorbing material constituting the first sound absorption type flow passage” generated and prepared in advance is installed at the position where the blower is removed in the removal step. Specifically, on the surface where the blower such as the upper surface or the side surface of the outdoor unit body is installed, one of the first sound absorption type flow passages is in an area where the blower is removed and the gap is open. A layer of sound absorbing material is attached so that the open ends are connected. The “sound-absorbing material layer constituting the first sound-absorbing flow passage” may be a state in which a galvalume steel plate or the like is wound around the outer periphery.

  This step is to install a new sound absorption type flow passage so that a new bolt hole is provided on the upper surface or side surface of the outdoor unit body as necessary, or the upper surface or side surface of the outdoor unit body is covered. This can be realized by laying a steel plate with holes or the like.

  “Blower installation step” (S0803) is a step of installing a blower with respect to the first sound absorption type flow passage installed in the first sound absorption type flow passage installation step. That is, the blower is installed at the opening end side of the first sound absorbing flow passage installed in the first sound absorbing flow passage that is not connected to the outdoor unit main body. . As specific means, for example, as shown in the conceptual cross-sectional view of FIG. 9, a layer (0906) of a sound absorbing material constituting the first sound absorbing flow passage (0903) and a steel plate (0907) such as a galvalume steel plate, You may implement | achieve installation of an air blower by comprising the saucer mechanism of an air blower, and inserting an air blower in the said mechanism. Although not shown, other materials may be used to provide a table on which the blower is placed, a fixing means, and the like. The installed blower may be the blower removed in the removal step, or may be a separately prepared blower. Note that the direction in which the blower is installed (the direction of exhaust and intake) is preferably the same as the direction in which it was originally installed in the outdoor unit.

  This step can be realized by a process such as installing a blower at a predetermined position and fastening a bolt.

  The “second sound absorption flow passage installation step” (S0804) is an air flow passage, and a second sound absorption flow passage installation step in which a side wall of the flow passage is constituted by a layer of a sound absorbing material is used as a first sound absorption flow passage installation step. It is the step which installs so that the air blower installed in the air blower installation step may be pinched | interposed with the 1st sound absorption type flow path installed in. “The second sound-absorbing flow passage, which is an air flow passage and the side wall of the flow passage is composed of a layer of sound-absorbing material”, has the same concept as that described in the first embodiment, and is not described here. To do. Further, the concept of “sandwiching the blower together with the first sound absorption type flow passage” is the same as the concept described in the first embodiment, and the description thereof is omitted (see FIG. 4).

  In the second sound absorption type flow passage installation step, the “sound absorbing material layer constituting the second sound absorption type flow passage” generated and prepared in advance is divided into the first sound absorption type flow passage and the second sound absorption type flow passage. Install so that the blower is sandwiched between. The “sound-absorbing material layer constituting the second sound-absorbing flow passage” may be a state in which a galvalume steel plate or the like is wound around the outer periphery.

  This step can be realized by processing such as installing a layer of a sound absorbing material constituting the second sound absorbing flow passage in a state where a galvalume steel plate or the like is wound around the outer periphery, and fastening a bolt.

Here, the remodeling method of the outdoor unit of the present embodiment includes “first sound absorption type flow passage installation step” (S0802), “blower installation step” (S0803), and “second sound absorption type flow passage installation step” ( S0804) can be performed at a time. Specifically, a sound absorption type blower device (in FIG. 7, the upper half of the outdoor unit main body) including a first sound absorption type flow passage, a second sound absorption type flow passage, and a blower is prepared in advance. And it is a case where the said sound absorption type air blower is installed in an outdoor unit main body after a removal step.
<Effect of Embodiment 2>

By remodeling the existing outdoor unit by the remodeling method of the outdoor unit of the present embodiment, it becomes possible to effectively solve the noise problem caused by the blower of the outdoor unit. As a result, the user can solve the noise problem of the outdoor unit without purchasing a new outdoor unit, and can enjoy the cost merit.
<< Embodiment 3 >>
<Outline of Embodiment 3>

  The computer building according to the present embodiment includes 30 or more outdoor units of the air conditioner described in the first embodiment, and includes a roof without a silencing wall and a silencing ceiling.

  An example of a computer building having a rooftop with 30 or more outdoor units of air conditioners is an internet data center with a large number of servers. Normally, if 30 or more outdoor units are placed together on the rooftop, etc., it is necessary to take sufficient measures against the noise of the outdoor units. Therefore, a sound deadening wall and a sound deadening ceiling are provided to seal the space where the outdoor unit is located. It is necessary to take measures such as. Such means require enormous costs.

However, the building according to the present embodiment is characterized in that an outdoor unit that effectively solves the noise problem caused by the blower is disposed, and thus the silencing wall and the silencing ceiling need not be provided.
<Functional configuration of Embodiment 3>

  The building of the present embodiment is configured to include 30 or more outdoor units described in the first embodiment, and to include a rooftop that does not have a silencing wall and a silencing ceiling.

  The “computer building” corresponds to any building in which a computer system is arranged, for example, a building having an internet data center. Note that the “computer building” of this embodiment does not have to be a building in which only a computer system is arranged, but corresponds to one or more floors or rooms in which a computer system is arranged. The area (floor, room, etc.) where the computer system is arranged needs to be continuously cooled by the air conditioner in order to operate the computer normally. That is, a computer building having a large-scale computer system inevitably requires many air conditioners, and as a result, many outdoor units are arranged together on the rooftop. The computer building of this embodiment corresponds to a computer building in which 30 or more outdoor units are arranged on the roof due to the above-described circumstances. It is not necessary that all the outdoor units arranged are outdoor units of an air conditioner for cooling the computer system, but an outdoor unit of an air conditioner for cooling other facilities and equipment provided in the building. Outdoor unit may be mixed.

In the computer building of this embodiment, 30 or more outdoor units are arranged on the roof. However, as described in the first embodiment, the outdoor unit provided with a mechanism that effectively prevents noise from the blower. Therefore, the noise problem of the outdoor unit does not occur. For this reason, the roof has a structure that does not have a sound-absorbing wall or a sound-absorbing ceiling provided to solve the noise problem of the outdoor unit.
<Effect of Embodiment 3>

  Since the outdoor unit described in Embodiment 1 solves the noise problem of the blower, the noise problem does not occur even if a large number of outdoor units are arranged together.

  Since the computer building of the present embodiment uses the outdoor unit described in the first embodiment, a large number of outdoor units are collected on the roof without causing a noise problem without providing a silencing wall and a silencing ceiling. Can be arranged.

  As a result of arranging the outdoor units together as described above, there is the convenience that maintenance and the like can be performed collectively. Moreover, since it is not necessary to provide a silencing wall and a silencing ceiling, a great cost advantage can be enjoyed.

Overview of an example of an outdoor unit of a conventional air conditioner 1 Outline diagram of an example of an outdoor unit of a conventional air conditioner 2 1 is a schematic diagram of an example of an outdoor unit of an air conditioner according to the present invention. 1 is a schematic diagram showing an example of a characteristic part of an outdoor unit of an air conditioner according to the present invention. Cross-sectional schematic diagram showing an example of the characteristic part of the outdoor unit of the air conditioner of the present invention FIG. 2 is a schematic diagram showing an example of a characteristic part of the outdoor unit of the air conditioner according to the present invention. FIG. 2 is a schematic diagram of an example of an outdoor unit of an air conditioner according to the present invention. The flowchart figure which showed an example of the flow of the process of the remodeling method of the outdoor unit of this invention The schematic diagram which shows an example of the shape of the layer of the sound deadening material which comprises the 1st sound absorption type flow path of this invention, and a steel plate

Explanation of symbols

0701 Outdoor unit main body 0702 Blower 0703 First sound absorption flow passage 0704 Second sound absorption flow passage 0705 Air suction portion 0706 Silencer layer 0707 Steel plate

Claims (7)

An air conditioner composed of an outdoor unit and an indoor unit,
The outdoor unit is
An outdoor unit body that houses a heat exchanger and has an air suction portion;
A blower,
An air flow path provided between the blower and the outdoor unit main body, the first sound absorption type flow path having a flow path side wall formed of a layer of a sound absorbing material;
An air conditioner consisting of Outdoor unit
The air conditioner according to claim 1, further comprising: a second sound-absorbing flow passage that is an air flow passage provided so as to sandwich the blower together with the first sound-absorbing flow passage, and the side wall of the flow passage is formed of a layer of a sound-absorbing material. .   The outdoor unit according to claim 1 or 2. A method for remodeling an outdoor unit in which a blower is installed in the outdoor unit body including a heat exchanger,
A removal step of removing the blower from the outdoor unit body;
A first sound-absorbing flow passage installation step for installing a first sound-absorbing flow passage in the outdoor unit body, which is an air flow passage, and the flow passage side wall is configured by a layer of a sound-absorbing material;
A fan installation step of installing a blower with respect to the first sound absorption type flow passage installed in the first sound absorption type flow passage installation step;
Remodeling method of outdoor unit with   A second sound-absorbing flow passage, which is a flow passage for air and includes a layer of sound-absorbing material on the side wall of the flow passage, together with the first sound-absorbing flow passage installed in the first sound-absorbing flow passage installation step, in the blower installation step The method for remodeling an outdoor unit according to claim 4, further comprising a second sound absorption type flow passage installation step for installing the installed blower so as to sandwich the blower.   A computer building comprising 30 or more outdoor units according to claim 3 and a rooftop having no silencing walls and no silencing ceiling.   A sound-absorbing blower comprising a blower, the first sound-absorbing flow passage according to claim 1, and the second sound-absorbing flow passage according to claim 2.

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