WO2020021625A1 - 防音部材及び空気調和機の室外機 - Google Patents
防音部材及び空気調和機の室外機 Download PDFInfo
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- WO2020021625A1 WO2020021625A1 PCT/JP2018/027663 JP2018027663W WO2020021625A1 WO 2020021625 A1 WO2020021625 A1 WO 2020021625A1 JP 2018027663 W JP2018027663 W JP 2018027663W WO 2020021625 A1 WO2020021625 A1 WO 2020021625A1
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- sound
- sound absorbing
- sound insulating
- compressor
- materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0033—Pulsation and noise damping means with encapsulations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
Definitions
- the present invention relates to a soundproof member that covers a compressor, and an outdoor unit of an air conditioner having a compressor to which the soundproof member is attached.
- the compressor is mounted in a machine room adjacent to a blower room in which a blower and a heat exchanger are mounted.
- the blower room and the machine room are separated by a separator.
- the compressor is covered with the exterior parts of the outdoor unit formed of sheet metal or the like, it is difficult to sufficiently suppress the sound generated from the compressor only by covering the exterior parts. Therefore, generally, a soundproof member for sound insulation and sound absorption is provided around the compressor.
- Patent Literature 1 a soundproof member for suppressing sound leakage to the outside has been attached to the compressor (for example, see Patent Document 1).
- the soundproofing member of Patent Literature 1 is formed by housing a sound absorbing material and a sound insulating material in a closed bag-shaped nonwoven fabric sheet.
- the soundproofing member of Patent Literature 1 has both surfaces covered with the nonwoven fabric sheet and has a complicated structure, and thus requires a lot of processing. Further, with the configuration of the soundproof member as in Patent Literature 1, it is not possible to sufficiently suppress the situation where sound generated by the compressor leaks to the outside.
- the present invention has been made to solve the above-described problems, and provides a soundproof member and an outdoor unit of an air conditioner that have a simple structure to suppress leakage of sound generated from a compressor to the outside.
- the purpose is to do.
- a soundproofing member is a soundproofing member that covers a compressor, includes at least two sound absorbing materials and at least two sound insulating materials, and has a side cover that covers a side surface of the compressor;
- the sound insulating material includes sound insulating materials having different specific gravities, and the side cover has one sound absorbing material arranged adjacent to the compressor, and the sound absorbing material and the sound insulating material are alternately arranged. As the distance increases, a sound insulating material having a relatively smaller specific gravity is disposed.
- the outdoor unit of the air conditioner according to the present invention includes a compressor, a heat source-side heat exchanger, and a heat source-side blower that blows the heat source-side heat exchanger, and includes the soundproof member that covers the compressor. Things.
- the sound insulating material having a relatively small specific gravity is arranged as the distance from the compressor increases, the sound insulating performance is improved. Therefore, the sound generated from the compressor can be prevented from leaking to the outside with a simple structure.
- FIG. 2 is a schematic configuration diagram illustrating a refrigerant circuit of the air conditioner according to Embodiment 1 of the present invention. It is the perspective view which illustrated the external appearance of the outdoor unit of FIG.
- FIG. 3 is a schematic cross-sectional view illustrating a state where the outdoor unit of FIG. 2 is cut along an xy plane at a height of a fan motor of an upper outdoor blower and is viewed downward.
- FIG. 3 is a perspective view illustrating an external appearance of a compressor installed inside the outdoor unit of FIG. 2. It is the perspective view which illustrated the compressor of FIG. 4, and the soundproof member. 6 is a graph illustrating a sound transmission loss ratio which is a ratio of a sound transmission loss of the soundproof member of FIG.
- FIG. 1 is a schematic configuration diagram illustrating a refrigerant circuit of an air conditioner according to Embodiment 1 of the present invention.
- the air conditioner 300 includes an outdoor unit 100 installed outdoors and an indoor unit 200 installed indoors.
- the outdoor unit 100 and the indoor unit 200 are connected by a refrigerant pipe 51.
- FIG. 1 exemplifies a horizontal blowing type outdoor unit as the outdoor unit 100.
- the indoor unit 200 is formed of, for example, a fin-and-tube heat exchanger, and has a load-side heat exchanger 44 for exchanging heat between indoor air and a refrigerant.
- the outdoor unit 100 includes the compressor 30, a four-way valve 41, a heat source side heat exchanger 42, and an expansion valve 43.
- the compressor 30 is driven by, for example, an inverter and compresses the refrigerant.
- the four-way valve 41 is connected to the discharge side of the compressor 30, and switches the flow path of the refrigerant. For example, the four-way valve 41 is switched to the flow path indicated by the solid line in FIG. 1 during the cooling operation and the defrosting operation, and is switched to the flow path indicated by the broken line in FIG. 1 during the heating operation.
- the heat source side heat exchanger 42 is formed of, for example, a fin-and-tube heat exchanger, and exchanges heat between the outside air and the refrigerant.
- the expansion valve 43 is composed of, for example, an electronic expansion valve, and decompresses and expands the refrigerant. That is, the air conditioner 300 has a refrigerant circuit 50 formed by connecting the compressor 30, the four-way valve 41, the heat source side heat exchanger 42, the expansion valve 43, and the load side heat exchanger 44 by the refrigerant pipe 51. are doing.
- the indoor unit 200 also has a load-side blower 70 that is attached to the load-side heat exchanger 44 and sends air to the load-side heat exchanger 44.
- the outdoor unit 100 has a heat source side blower 60 that is attached to the heat source side heat exchanger 42 and sends air to the heat source side heat exchanger 42.
- FIG. 1 illustrates a case where two heat source-side blowers 60 are installed in the outdoor unit 100.
- the heat source side blower 60 includes, for example, a fan motor 61 driven by an inverter, and a fan 62 that rotates using the fan motor 61 as a power source and blows air to the heat source side heat exchanger 42.
- FIG. 2 is a perspective view illustrating the appearance of the outdoor unit of FIG.
- FIG. 3 is a schematic cross-sectional view showing a state where the outdoor unit of FIG. 2 is cut along the xy plane at the height of the fan motor of the upper outdoor blower and viewed downward.
- FIG. 4 is a perspective view illustrating an appearance of a compressor installed inside the outdoor unit of FIG.
- the front-rear direction of the outdoor unit 100 corresponds to the x-axis direction
- the left-right direction of the outdoor unit 100 corresponds to the y-axis direction
- the vertical direction of the outdoor unit 100 corresponds to the z-axis direction.
- the positive y-axis direction is the right side
- the negative y-axis direction is the left side
- the vertical direction is also referred to as a height direction.
- the structure and orientation of the compressor 30 in FIGS. 3 and 4 are merely examples, and the present invention is not limited thereto. These contents are the same in each of the drawings described below.
- the outdoor unit 100 has a box-shaped casing 10 that forms an outer shell of the outdoor unit 100.
- the compressor 30, the four-way valve 41, the heat source side heat exchanger 42, and the expansion valve 43 Are housed inside the casing 10.
- the casing 10 includes, as outer components of the outdoor unit 100, a top panel 1, a base 2, a front panel 3, a service panel 4, a right side panel 5, a left side panel 6, and a front side cover panel 7. , A rear cover panel 8 and a separator 9.
- the refrigerant circuit 50 is provided with a pressure container 45 that stores the refrigerant at a predetermined pressure.
- the space in the casing 10 is separated by the separator 9 into the blower room 11 in which the heat source side heat exchanger 42 and the heat source side blower 60 are mounted, the compressor 30, the refrigerant pipe 51, and electric components. And a machine room 12 in which is mounted.
- the exterior parts of the outdoor unit are generally formed of sheet metal, and each has a sound insulating property. If a sound absorbing material such as an insulation is attached to the outer component, the sound transmission loss can be further improved.
- the noise generated by the compressor tends to increase due to the sophistication of energy-saving performance, which has been intensified in recent years, as well as the miniaturization of the units. Sound leakage to the outside cannot be sufficiently suppressed.
- FIG. 4 shows the outdoor unit 100 of FIG. 2 with the service panel 4 and the front side cover panel 7 removed, and the compressor 30 and its surroundings partially shown.
- FIG. 4 illustrates the compressor 30 of the type having the terminal cover 30a on the front. Therefore, the soundproof member 20 is provided with the notch 25 into which the terminal cover 30a is inserted. Further, the soundproof member 20 is provided with a through hole 26 through which a pipe protruding from the compressor 30 passes. However, the soundproof member 20 can take various shapes according to the shape of the compressor 30.
- FIG. 5 is a perspective view illustrating the compressor and the soundproof member of FIG.
- FIG. 5 illustrates a state in which a part of the side cover 23 and a part of the compressor 30 are schematically cut to show the cross-sectional shape of the side cover 23 (see a virtual cutout portion 80).
- FIG. 5 also includes a schematic cross-sectional view in which the cross-sectional shape of the virtual cutout portion 80 is partially extracted and enlarged.
- the side cover 23 is a cover that covers the side of the compressor 30. That is, the side cover 23 is wound so as to cover the side surface of the compressor 30.
- the side cover 23 includes a sound absorbing material 21a, a sound absorbing material 21b, a sound insulating material 22a, and a sound insulating material 22b.
- the upper surface cover 24 is a cover that covers the upper surface of the compressor 30.
- the side cover 23 has a configuration in which the sound absorbing material 21a, the sound insulating material 22a, the sound absorbing material 21b, and the sound insulating material 22b are arranged in this order from the compressor 30 side. That is, the side cover 23 is formed by alternately arranging the sound absorbing material and the sound insulating material. Therefore, the sound insulating material 22a is sandwiched between the sound absorbing material 21a and the sound absorbing material 21b, and the sound absorbing material 21b is sandwiched between the sound insulating material 22a and the sound insulating material 22b.
- the side cover 23 has the sound absorbing material 21a, the sound insulating material 22a, the sound absorbing material 21b, and the sound insulating material 22b joined by sewing.
- the side cover 23 may be formed by joining the sound absorbing material 21a, the sound insulating material 22a, the sound absorbing material 21b, and the sound insulating material 22b by bonding with an adhesive or the like.
- the side cover 23 may be formed by combining sewing with sewing and bonding with an adhesive. In this way, the strong side cover 23 can be manufactured at low cost. In particular, by forming the side cover 23 including sewing, it is possible to improve the resistance to aging and the like.
- the sound absorbing material 21 a is a sheet-shaped sound absorbing material made of, for example, felt or glass wool, and is disposed adjacent to the compressor 30.
- the sound insulating material 22a is a sheet-shaped sound insulating material made of, for example, butyl rubber having a specific gravity of about 2.6 or rubber having a specific gravity of about 2.4.
- the sound absorbing material 21b is a sheet-shaped sound absorbing material made of, for example, felt or glass wool.
- the sound insulating material 22b is a sheet-shaped sound insulating material made of, for example, rubber having a specific gravity of about 2.4 or ethylene propylene diene rubber (EPDM) having a specific gravity of about 0.87.
- EPDM ethylene propylene diene rubber
- the sound insulating material having a relatively small specific gravity is arranged in the side cover 23 as the distance from the compressor 30 increases. That is, in the side cover 23, the specific gravity of the sound insulating material relatively far from the compressor 30 is smaller than that of the sound insulating material relatively close to the compressor 30.
- the specific gravity of the sound insulating material 22 b that is far away from the compressor 30 is smaller than the specific gravity of the sound insulating material 22 a that is close to the compressor 30.
- rubber or ethylene propylene diene rubber can be adopted as the material of the sound insulating material 22b.
- ethylene propylene diene rubber can be adopted as the material of the sound insulating material 22b.
- the top cover 24 is formed by laminating a sheet-like sound absorbing material made of, for example, felt or glass wool, and a sheet-shaped sound insulating material made of rubber, butyl rubber, ethylene propylene diene rubber, or the like.
- the sound absorbing material and the sound insulating material are joined using at least one of sewing by sewing and adhesion by an adhesive.
- a sound absorbing material is arranged on the compressor 30 side.
- the top cover 24 may have a four-layer structure similarly to the side cover 23, the first embodiment has two layers of a sound absorbing material and a sound insulating material in consideration of ease of attachment to the compressor 30. It has a structure.
- FIG. 6 is a graph illustrating a sound transmission loss ratio which is a ratio of the sound transmission loss of the soundproof member of FIG. 5 to the sound transmission loss of the soundproof member of the conventional specification.
- the horizontal axis indicates the frequency component [kHz]
- the vertical axis indicates the sound transmission loss ratio [%].
- the sound insulating member 20 used in FIG. 6 the sound absorbing material 21a and the sound absorbing material 21b are felt, the sound insulating material 22a is butyl rubber, and the sound insulating material 22b is rubber.
- the conventional soundproofing member used for comparison with the soundproofing member 20 has the same configuration as the soundproofing member of Patent Document 1.
- the data for obtaining the sound transmission loss is obtained after the outer periphery of the compressor 30 is covered with a conventional soundproofing member, similarly to the soundproofing member 20.
- the sound transmission loss is an index indicating the performance of blocking sound transmitted through the air, and the larger the sound transmission loss, the better the sound insulation performance. Therefore, in FIG. 6, in the range where the sound transmission loss ratio exceeds 100%, the soundproof member 20 has a larger sound transmission loss and better sound insulation performance than the conventional soundproof member.
- the soundproofing member 20 has a sound transmission loss ratio of at least 118% for at least the entire range of frequencies from 1 kHz to 10 kHz. That is, the soundproofing member 20 has a significantly greater sound transmission loss than the conventional soundproofing member at least for sounds in the entire range from the frequency of 1 kHz to the frequency of 10 kHz, and the sound insulating performance is dramatically improved. .
- the sound absorbing material and the sound insulating material are alternately arranged, and the sound insulating material having a relatively small specific gravity is arranged as the distance from the compressor 30 increases, so that the sound insulating performance is improved. Can be enhanced. Therefore, it is possible to suppress the sound generated from the compressor 30 from leaking to the outside of the outdoor unit 100 with a simple structure. That is, as exemplified in FIG. 6, it is possible to provide the soundproof member 20 having a greater sound transmission loss than the soundproof member of the conventional specification.
- the side cover 23 since the sound absorbing material adjacent to the compressor 30 is sandwiched between the compressor 30 and the sound insulating material, the sound generated from the compressor 30 and passing through the sound absorbing material is compressed by the sound insulating material. It can bounce back to the machine 30 side. Further, in the side cover 23, since the sound absorbing material that is not adjacent to the compressor 30 is sandwiched between the two sound insulating materials, the sound passing through the sound absorbing material is reciprocated between the two sound insulating materials. Can be. Accordingly, since the side cover 23 includes two or more sound absorbing materials, the number of propagation paths through which the sound absorbing materials absorb sound can be increased, and thus the sound absorbing coefficient can be increased.
- the side cover 23 is arrange
- the side cover 23 has the sound insulating material having a relatively small specific gravity disposed outside. Therefore, it is possible to suppress a situation in which the outer sound insulating material far from the center of gravity hangs, and it is possible to prevent the sound insulating member 20 from being out of shape and being displaced, so that the sound insulating performance can be stably maintained.
- the side cover 23 at least two sound absorbing materials and at least two sound insulating materials can be joined by a combination of sewing and bonding. In this way, the side cover 23 can be made robust and the manufacturing cost of the side cover 23 can be reduced.
- the side cover 23 preferably has a four-layer structure including two sound absorbing materials and two sound insulating materials.
- the side cover 23 shown in FIG. 5 is formed by arranging the sound absorbing material 21a, the sound insulating material 22a, the sound absorbing material 21b, and the sound insulating material 22b in this order from the compressor 30, the sound leakage is significantly suppressed. At the same time, it can be more easily attached to the compressor 30.
- FIG. 5 illustrates the side cover 23 having two sound absorbing materials and two sound insulating materials, but is not limited thereto, and the side cover 23 may have three or more sound absorbing materials. It may well have three or more sound insulation materials. That is, the side cover 23 only needs to include at least two sound absorbing materials and at least two sound insulating materials. However, in the side cover 23, one sound absorbing material needs to be arranged adjacent to the compressor 30, and the sound absorbing material and the sound insulating material need to be alternately arranged. Therefore, in the side cover 23, the number of sound absorbing materials and the number of sound insulating materials need to be equal, or the number of sound absorbing materials needs to be one more than the number of sound insulating materials.
- the side cover 23 has the same number of the sound absorbing material and the sound insulating material, and the sound insulating material is arranged on the outermost side. By doing so, the number of propagation paths through which the sound absorbing material absorbs sound can be increased, and thus the sound absorbing rate can be increased.
- the side cover 23 includes three or more sound insulating materials, and includes sound insulating materials having the same specific gravity
- the two side sound insulating materials disposed next to each other with the sound absorbing materials interposed therebetween are relatively located relative to the compressor 30. It is sufficient that the specific gravity of the near sound insulating material is equal to or less than the specific gravity of the sound insulating material relatively far from the compressor 30. That is, the specific gravity of the sound insulating material closest to the compressor 30 should just be greater than the specific gravity of the outermost sound insulating material.
- the sound insulation member 20 of the first modification has a relatively larger thickness as the distance from the compressor 30 increases.
- the material is arranged.
- the sound insulating material 22a is formed of butyl rubber as a material and is formed into a sheet having a thickness of 1.4 mm
- the sound insulating material 22b is formed of rubber as a material and formed as a sheet having a thickness of 1.6 mm.
- the soundproofing member 20 of the first modified example As described above, in the soundproofing member 20 of the first modified example, as the distance from the compressor 30 increases, the sound insulating material having a relatively large thickness is arranged. Therefore, the sound transmission loss can be further increased, and the sound insulation performance can be improved.
- the soundproofing member 20 of the second modified example has a smaller sound absorbing thickness as the distance from the compressor 30 increases.
- the material is arranged.
- the sound absorbing material 21a is formed of a felt and is formed into a sheet having a thickness of 15 mm
- the sound absorbing material 21b is formed of a felt and formed into a sheet having a thickness of 5 mm.
- the soundproofing member 20 of the second modification As described above, in the soundproofing member 20 of the second modification, as the distance from the compressor 30 increases, the sound absorbing material having a relatively small thickness is arranged. Therefore, the sound transmission loss can be further increased, and the sound insulation performance can be improved. In addition, since the center of gravity of the sound absorbing material can be brought closer to the compressor 30, the ease of winding the soundproof member 20 can be improved, so that the workability can be improved.
- the soundproof member 20 of Modification 3 has a configuration in which Modification 1 and Modification 2 are combined. That is, in the soundproof member 20 of the second modification, as the distance from the compressor 30 increases, the sound insulation material having a relatively large thickness is arranged, and the sound absorption material having a relatively small thickness is arranged. Has become. Therefore, according to the soundproofing member 20 of the third modification, the sound insulation performance can be further improved, and the workability can be improved.
- the soundproof member 20 of the fourth modification is characterized in that the materials of the plurality of sound absorbing materials are different.
- the sound absorbing material 21a when the sound absorbing material 21a is formed using felt as a material, the sound absorbing material 21b may be formed using glass wool as a material.
- the sound absorbing material 21b when the sound absorbing material 21a is formed of glass wool, the sound absorbing material 21b may be formed of felt.
- At least two sound absorbing materials include sound absorbing materials of different materials. That is, in the fourth modification, a plurality of sound absorbing materials constituting the sound insulating member 20 are selected so as to reduce the sound transmission loss in consideration of the material of the adjacent sound insulating material. That is, in the soundproofing member 20 of the fourth modification, the soundproofing performance can be improved by selecting the sound absorbing material according to the material of each soundproofing material.
- the configuration of Modifications 1 to 3 described above can be applied to the configuration of Modification 4.
- FIG. 7 is a perspective view illustrating a compressor and a soundproof member of an outdoor unit of an air conditioner according to Embodiment 2 of the present invention. 7, similar to FIG. 5, a schematic cross-sectional view in which the cross-sectional shapes of two virtual cutout portions 80 are partially extracted and enlarged.
- FIG. 7 illustrates the side cover 23 having two sound absorbing materials and two sound insulating materials, but is not limited thereto.
- the side cover 23 according to the second embodiment may have three or more sound absorbing materials or may have three or more sound insulating materials under the same restrictions as in the first embodiment.
- the sound insulating material sandwiched between the two sound absorbing materials has a length in the height direction shorter than the length in the height direction of the two sound absorbing materials sandwiching itself. ing.
- the sound insulating material not sandwiched between the two sound absorbing materials has a length in the height direction equal to the length in the height direction of the sound absorbing material.
- the sound insulating material 22a sandwiched between the sound absorbing material 21a and the sound absorbing material 21b has a length in the height direction, and the length in the height direction of the sound absorbing material 21a and the sound absorbing material 21b sandwiching the sound insulating material 22a. It is shorter than it is.
- the upper end and the lower end of the sound insulating material 22a may be shorter than the sound absorbing material 21a and the sound absorbing material 21b so that the sound absorbing material 21a and the sound absorbing material 21b can be brought into contact with each other and sewn.
- the length of the sound insulating material 22b in the height direction is equal to the length of the sound absorbing material 21a and the sound absorbing material 21b in the height direction. Therefore, the sound absorbing material 21a, the sound absorbing material 21b, and the sound insulating material 22b are joined at the upper end and the lower end of the side cover 23, and the sound insulating material 22a is sandwiched between the sound absorbing material 21a and the sound absorbing material 21b. .
- the sound generated from the compressor 30 can be suppressed from leaking to the outside of the outdoor unit 100 with the simple structure also by the side cover 23 of the second embodiment.
- the side cover 23 according to the second embodiment the length in the height direction of the sound insulating material sandwiched between the two sound absorbing materials is shorter than the length in the height direction of the two sound absorbing materials sandwiching itself. Has become. Therefore, when joining each sound absorbing material and each sound insulating material of the soundproof member 20, the joining thickness can be reduced, and workability can be improved.
- the sound insulating material sandwiched between the two sound absorbing materials has a shape different from that of the sound absorbing material sandwiching itself. It may be.
- the sound insulating material sandwiched between the two sound absorbing materials may have a shorter length in the left-right direction when the side cover 23 is expanded than the length in the left-right direction of the two sound absorbing materials sandwiching itself.
- the configurations of Modifications 1 to 4 described above and combinations thereof can be applied to the side cover 23 of the second embodiment. Other effects are the same as those of the first embodiment.
- FIG. 8 is a perspective view illustrating a compressor and a soundproof member of an outdoor unit of an air conditioner according to Embodiment 3 of the present invention. 8, similar to FIG. 7, a schematic cross-sectional view in which the cross-sectional shapes of two virtual cutout portions 80 are partially extracted and enlarged.
- FIG. 8 illustrates the side cover 23 having two sound absorbing materials and two sound insulating materials, but is not limited thereto.
- the side cover 23 of the third embodiment may have three or more sound absorbing materials or three or more sound insulating materials under the same restrictions as in the first embodiment.
- the sound absorbing material sandwiched between the two sound insulating materials has a length in the height direction shorter than the length in the height direction of the two sound insulating materials sandwiching itself. ing.
- the sound absorbing material not sandwiched between the two sound insulating materials has a length in the height direction equal to the length in the height direction of the sound insulating material.
- the length in the height direction of the sound absorbing material 21b sandwiched between the sound insulating materials 22a and 22b is the length in the height direction of the sound insulating material 22a and the sound insulating material 22b sandwiching the sound absorbing material 21b. It is shorter than it is.
- the upper end and the lower end of the sound absorbing material 21b may be shorter than the sound insulating material 22a and the sound insulating material 22b so that the sound insulating material 22a and the sound insulating material 22b can be brought into contact with each other and sewn.
- the length in the height direction of the sound absorbing material 21a is equal to the length in the height direction of the sound insulating materials 22a and 22b.
- the sound absorbing material 21a, the sound insulating material 22a, and the sound insulating material 22b are joined at the upper end and the lower end of the side cover 23, and the sound absorbing material 21b is sandwiched between the sound insulating material 22a and the sound insulating material 22b. .
- the sound generated from the compressor 30 can be prevented from leaking to the outside of the outdoor unit 100 with the simple structure also by the side cover 23 of the third embodiment.
- the side cover 23 according to the third embodiment the length in the height direction of the sound absorbing material sandwiched between the two sound insulating materials is shorter than the length in the height direction of the two sound insulating materials sandwiching itself. Has become. Therefore, when joining each sound absorbing material and each sound insulating material of the soundproofing member 20, the joining thickness can be reduced, and the workability can be improved.
- the sound absorbing material sandwiched between the two sound insulating materials is formed in a shape different from that of the sound insulating material sandwiching itself. It may be.
- the sound absorbing material sandwiched between the two sound insulating materials may have a shorter length in the left-right direction when the side cover 23 is expanded than the length in the left-right direction of the two sound insulating materials sandwiching itself.
- the configurations of Modifications 1 to 4 described above and combinations thereof can be applied to the side cover 23 of the third embodiment. Other effects are the same as those of the first embodiment.
- the above embodiments are preferred specific examples of the soundproof member and the outdoor unit of the air conditioner, and the technical scope of the present invention is not limited to these embodiments.
- sewing by sewing and bonding by an adhesive have been exemplified, but not limited thereto.
- the side cover 23 or the top cover 24 may be formed by fixing with a stapler or pasting with a double-sided adhesive tape.
- the side cover 23 or the top cover 24 may be formed by combining at least two of stitching by sewing, bonding by an adhesive, fixing by a stapler, and sticking by a double-sided adhesive tape.
- the soundproofing member 20 may be formed so that the side cover 23 covers not only the side surface but also the upper surface of the compressor 30. In this case, the soundproofing member 20 may not include the upper surface cover 24.
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Abstract
Description
図1は、本発明の実施の形態1に係る空気調和機の冷媒回路を例示した概略構成図である。図1に示すように、空気調和機300は、室外に設置される室外機100と、室内に設置される室内機200と、を有している。室外機100と室内機200とは、冷媒配管51により接続されている。図1では、室外機100として、横吹き型室外機を例示している。
上記の説明では、複数の遮音材の厚みが互いに等しい場合を想定して説明したが、本変形例1の防音部材20は、圧縮機30からの距離が離れるほど、相対的に厚みの大きな遮音材が配置されるようになっている。図5の構成の場合、例えば、遮音材22aは、ブチルゴムを材料とし、厚み1.4mmのシート状に形成され、遮音材22bは、ゴムを材料とし、厚み1.6mmのシート状に形成される。
上記の説明では、複数の吸音材の厚みが互いに等しい場合を想定して説明したが、本変形例2の防音部材20は、圧縮機30からの距離が離れるほど、相対的に厚みの小さな吸音材が配置されるようになっている。図5の構成の場合、例えば、吸音材21aは、フェルトを材料とし、厚み15mmのシート状に形成され、吸音材21bは、フェルトを材料とし、厚み5mmのシート状に形成される。
本変形例3の防音部材20は、変形例1と変形例2とを組み合わせた構成を採っている。すなわち、本変形例2の防音部材20は、圧縮機30からの距離が離れるほど、相対的に厚みの大きな遮音材が配置され、かつ、相対的に厚みの小さな吸音材が配置されるようになっている。したがって、本変形例3の防音部材20によれば、遮音性能をさらに高めると共に、作業性の向上を図ることができる。
本変形例4の防音部材20は、複数の吸音材の材質が異なる点に特徴がある。例えば、フェルトを材料として吸音材21aを形成する場合、吸音材21bはグラスウールを材料として形成するとよい。また、グラスウールを材料として吸音材21aを形成する場合、吸音材21bはフェルトを材料として形成するとよい。
本実施の形態2における空気調和機の室外機の全体的な構成は、前述した実施の形態1と同様であるため、実施の形態1と同等の構成部材については同一の符号を用いて説明は省略する。図7は、本発明の実施の形態2に係る空気調和機の室外機が有する圧縮機及び防音部材を例示した斜視図である。図7には、図5と同様、2箇所の仮想切り取り部80の断面形状を部分的に抽出して拡大した概略断面図を添えている。ここで、図7では、2枚の吸音材と2枚の遮音材とを有する側面カバー23を例示しているが、これに限定されない。本実施の形態2の側面カバー23は、実施の形態1と同様の制限において、3枚以上の吸音材を有していてもよく、3枚以上の遮音材を有していてもよい。
本実施の形態3における空気調和機の室外機の全体的な構成は、上述した実施の形態1及び2と同様であるため、実施の形態1及び2と同等の構成部材については、同一の符号を用いて説明は省略する。図8は、本発明の実施の形態3に係る空気調和機の室外機が有する圧縮機及び防音部材を例示した斜視図である。図8には、図7と同様、2箇所の仮想切り取り部80の断面形状を部分的に抽出して拡大した概略断面図を添えている。ここで、図8では、2枚の吸音材と2枚の遮音材とを有する側面カバー23を例示しているが、これに限定されない。本実施の形態3の側面カバー23は、実施の形態1と同様の制限において、3枚以上の吸音材を有していてもよく、3枚以上の遮音材を有していてもよい。
Claims (10)
- 圧縮機を覆う防音部材であって、
少なくとも2枚の吸音材と少なくとも2枚の遮音材とを備え、前記圧縮機の側面を覆う側面カバーを有し、
少なくとも2枚の前記遮音材は、比重の異なる前記遮音材を含み、
前記側面カバーは、
1枚の前記吸音材が前記圧縮機に隣接して配置されると共に、前記吸音材と前記遮音材とが交互に配置され、
前記圧縮機からの距離が離れるほど、相対的に比重の小さな前記遮音材が配置されている、防音部材。 - 前記側面カバーは、
前記圧縮機からの距離が離れるほど、相対的に厚みの大きな前記吸音材が配置されている、請求項1に記載の防音部材。 - 前記側面カバーは、
前記圧縮機からの距離が離れるほど、相対的に厚みの小さな前記遮音材が配置されている、請求項1又は2に記載の防音部材。 - 少なくとも2枚の前記吸音材は、材質の異なる前記吸音材を含む、請求項1~3の何れか一項に記載の防音部材。
- 2枚の前記吸音材によって挟まれた前記遮音材は、高さ方向の長さが、自身を挟む2枚の前記吸音材の高さ方向の長さよりも短くなっている、請求項1~4の何れか一項に記載の防音部材。
- 2枚の前記遮音材によって挟まれた前記吸音材は、高さ方向の長さが、自身を挟む2枚の前記遮音材の高さ方向の長さよりも短くなっている、請求項1~4の何れか一項に記載の防音部材。
- 前記側面カバーは、
少なくとも2枚の前記吸音材及び少なくとも2枚の前記遮音材が、縫製と接着との組み合わせにより接合されて形成されている、請求項1~6の何れか一項に記載の防音部材。 - 前記側面カバーは、
前記吸音材の枚数と前記遮音材の枚数とが等しい、請求項1~7の何れか一項に記載の防音部材。 - 前記側面カバーは、
2枚の前記吸音材と2枚の前記遮音材とを備えている、請求項1~8の何れか一項に記載の防音部材。 - 圧縮機と、熱源側熱交換器と、前記熱源側熱交換器に送風する熱源側送風機と、を有すると共に、
前記圧縮機を覆う請求項1~9の何れか一項に記載の防音部材を有する、空気調和機の室外機。
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