JP5505342B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner. More specifically, the present invention relates to an outdoor unit of an air conditioner in which a soundproofing material for suppressing noise from a compressor from leaking to the outside is provided.

  In the outdoor unit of the air conditioner, noise is generated by the operation of the compressor disposed in the casing. However, if this noise leaks to the outside as it is, there is a risk of deteriorating the surrounding living environment. Therefore, conventionally, various measures have been proposed as soundproofing measures.

  For example, Patent Documents 1 and 2 propose that a sheet-like soundproof material is mounted around the compressor so as to cover the compressor (Prior Art A). It has also been proposed to surround the entire compressor with a metal casing (prior art B). According to these conventional techniques, it is possible to obtain a certain soundproof effect against noise from the compressor.

Japanese Patent Laid-Open No. 10-220820 JP 2000-249371 A

  In the prior art A, if the thickness of the soundproofing material is increased, the effect of reducing the noise from the compressor can be enhanced, but there are equipment such as refrigerant pipes, valves, and accumulators around the compressor. Due to the arrangement, it is difficult to ensure sufficient space or clearance for the soundproofing material. Further, when the thickness of the soundproof material is increased with a narrow clearance, the soundproof material touches a peripheral member of the compressor such as the refrigerant pipe, and the vibration of the compressor is propagated to the peripheral member via the soundproof material, As a result, low-frequency noise caused by the vibration of the compressor may be increased.

  On the other hand, in the prior art B, as in the prior art A, it is difficult to secure a sufficient space for the soundproof casing.

  In addition, the installation work of the soundproofing material in the prior art A and the installation work of the soundproof casing in the prior art B in a narrow space are troublesome and have been an obstacle to cost reduction.

  In the prior arts A and B, if the entire casing for accommodating the compressor is enlarged, a sufficient space for soundproofing can be secured around the compressor, but the apparatus becomes larger and space saving or miniaturization is achieved. It will be against the request.

  The present invention has been made in view of such circumstances, and by effectively utilizing the space in the outdoor unit of the air conditioner, the soundproofing material can be easily arranged without increasing the size of the apparatus. It aims at providing the outdoor unit of the air conditioner which can be done.

(1) An outdoor unit of an air conditioner according to the first aspect of the present invention (hereinafter also simply referred to as “outdoor unit”) is an air conditioner in which a compressor and a heat exchanger are accommodated in a casing. An outdoor unit,
A soundproofing material comprising a sheet body that can be disposed along at least a part of the inner surface of the casing and is spaced apart from the compressor ;
The soundproofing material is to have a locking portion which is locked rotatably engaged detachably to the heat exchanger, and,
The soundproofing material is characterized to have a support leg in contact with the bottom plate inside surface of the casing to support the acoustic insulation.

In the outdoor unit according to the first aspect of the present invention, a soundproof material made of a sheet is disposed along the inner surface of the casing of the outdoor unit and away from the compressor. There is usually a gap or clearance of about 1.0 to 2.0 cm between the casing of the outdoor unit and a device such as a heat exchanger or a refrigerant pipe. A sheet-like soundproof material is disposed in the space. That is, since the soundproofing material is disposed in an empty space in the casing that has not been used conventionally, the necessary soundproofing material can be disposed without increasing the size of the apparatus. And by arranging the soundproofing material of the present invention, the thickness of the conventional soundproofing material mounted on the compressor can be reduced or omitted, so that a space around the compressor is provided. As a result, the apparatus can be reduced in size. Further, since the soundproofing material is disposed away from the compressor, it is possible to prevent or suppress the low frequency noise caused by the vibration of the compressor from being propagated to the outside.

Further, since the soundproofing material can be locked to the heat exchanger by the locking portion, it can be easily mounted and positioned. Therefore, the process of attaching the soundproofing material can be simplified, and the cost can be reduced.
Furthermore, since the soundproofing material is supported by the bottom plate of the casing by the support legs, the soundproofing material can be reliably positioned.
(2) An outdoor unit according to a second aspect of the present invention is an outdoor unit of an air conditioner in which a compressor and a heat exchanger are accommodated in a casing,
A soundproofing material comprising a sheet body that can be disposed along at least a part of the inner surface of the casing and is spaced apart from the compressor;
The soundproof material has a locking portion that is detachably locked to the heat exchanger, and
The said latching | locking part has the latching hole which can be latched to the U-shaped pipe straight pipe part of the heat exchanger tube of the said heat exchanger.
In the outdoor unit according to the second aspect of the present invention, the soundproofing material can be attached and positioned using the U-tube straight tube portion of the heat transfer tube of the heat exchanger.
(3) An outdoor unit according to a third aspect of the present invention is an outdoor unit of an air conditioner in which a compressor and a heat exchanger are accommodated in a casing,
A soundproofing material comprising a sheet body that can be disposed along at least a part of the inner surface of the casing and is spaced apart from the compressor;
The soundproof material has a locking portion that is detachably locked to the heat exchanger, and
A notch portion in a substantially vertical direction is formed at a lower end portion of the soundproof material.
In the outdoor unit according to the third aspect of the present invention, the lower part of the soundproofing material can be deformed relatively easily after the soundproofing material is disposed. For example, the soundproofing material such as pipe connection work at the outdoor unit installation location. Work related to equipment and piping located on the back side (opposite side of the casing) can be easily performed.

( 4 ) In the outdoor units of (1) to (3) , the soundproofing material may include a sound insulating sheet and a sound absorbing layer provided on a surface of the sound insulating sheet. In this case, the noise can be sound-insulated by the sound-insulating sheet, and the noise can be absorbed by the sound-absorbing layer, and the noise from the compressor can be prevented from leaking to the outside by the action of both.

( 5 ) In the outdoor unit of ( 1 ), the soundproofing material has a rectangular shape,
The locking portion is formed at one corner of the upper portion of the soundproof material, and
The support leg may be formed at a lower corner of the soundproofing material on the same side as the locking portion. In this case, the rectangular soundproof material is locked to the heat exchanger at the locking portion at the upper side of one side, and is supported by the bottom plate of the casing at the supporting leg at the lower side of the one side.

( 6 ) In the outdoor unit of ( 5 ), the locking portion includes a first protruding piece that protrudes laterally from a side edge of the rectangular soundproof material, and
The support leg may comprise a second projecting piece projecting downward from a lower edge of the rectangular soundproof material. In this case, since the soundproof material is locked to the heat exchanger by the locking portion of the first protruding piece protruding from the main body, the locking work can be easily performed.

( 7 ) In the outdoor unit of ( 5 ) or ( 6 ), the lower end edge of the soundproof material in a portion other than the support leg may be positioned below the upper end of the rising wall at the peripheral edge of the bottom plate of the casing. In this case, since the soundproofing material and the rising wall at the peripheral edge of the bottom plate of the casing overlap in the horizontal direction, the leakage of noise from the compressor to the outside can be further reduced.

(8) In the outdoor unit of ( 2 ), a notch that connects a peripheral edge of the locking hole and an edge of the first protruding piece in which the locking hole is formed may be formed. In this case, the soundproofing material can be easily attached to the heat exchanger by opening the notch and guiding the U-tube straight tube portion of the heat transfer tube to the locking hole of the locking portion.

(9) In the outdoor unit of (1) to (8), the sound insulation sheet is a rubber sheet having a thickness of 2 to 4 mm, and
The sound absorbing layer may be made of a sound absorbing felt having a thickness of 5 to 20 mm. In this case, it is possible to suppress the noise from the compressor from leaking outside while utilizing the empty space on the inner surface of the casing.

(10) In the outdoor units of (1) to (9), the soundproof material may be disposed along the inner surface of the rear side casing of the outdoor unit. In this case, the noise can be effectively reduced by disposing a soundproof material on the back side of the outdoor unit in which noise from the compressor is likely to leak.

( 11 ) In the outdoor unit of (1) to ( 10 ), a guide for positioning the lower end of the soundproof material may be erected on the periphery of the bottom plate of the casing. In this case, by using the guide, it is possible to easily and reliably install the soundproof material along the inner surface of the casing.

  According to the outdoor unit of the air conditioner of the present invention, it is possible to easily arrange the soundproof material without increasing the size of the apparatus by effectively utilizing the space in the outdoor unit of the air conditioner. .

It is an isometric view explanatory drawing of the outdoor unit which concerns on one embodiment of this invention. It is a plane explanatory view of the outdoor unit shown in FIG. It is a principal part enlarged plan view of the outdoor unit shown by FIG. It is a front view of an example of a soundproof material in the present invention. It is a side view of the soundproof material shown by FIG. It is a rear view of the soundproof material shown by FIG. It is explanatory drawing which shows the state which attached the soundproof material to the heat exchanger tube of the heat exchanger. It is explanatory drawing which shows the state which attached the soundproof material to the heat exchanger tube of the heat exchanger.

Hereinafter, embodiments of the outdoor unit of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective explanatory view of an outdoor unit 1 according to an embodiment of the present invention, FIG. 2 is a plan explanatory view of the outdoor unit 1 shown in FIG. 1, and FIG. 3 is shown in FIG. It is a principal part enlarged plan view of the outdoor unit 1 to be. The outdoor unit 1 as a heat source side device is connected to an indoor unit as a use side device (not shown) by a refrigerant pipe, and constitutes a part of an air conditioner that performs air conditioning in a space in which the indoor unit is arranged.

  The outer surface of the outdoor unit 1 is configured by a substantially rectangular parallelepiped outdoor unit casing 2 including a top plate 2a, a bottom plate 2b, a front panel 2c, a left side panel 2d, a right side panel 2e, and a back panel f.

  The outdoor unit 1 is divided by a partition plate 9 into a blower chamber 5 in which an outdoor heat exchanger 3 and an outdoor fan 4 are disposed, and a machine chamber 8 in which a compressor 6 and an accumulator 7 are disposed. . A conventional soundproofing material 40 is attached to the outer periphery of the compressor 6 and its associated accumulator 6a. One end of the partition plate 9 is fixed to a tube plate 3 a disposed at the machine chamber side end of the outdoor heat exchanger 3. In the machine room 8 of the outdoor unit 1, known elements such as a four-way switching valve, a hot gas bypass valve, and a capillary tube are disposed in addition to the compressor 6 and the accumulator 7. In FIGS. 7 to 8 to be described later, illustration thereof is omitted for simplicity.

  In the present embodiment, in the outdoor unit casing 2, a soundproof material 10 made of a sheet is disposed along the inner surface of the back panel 2 f that partitions the machine room 8. More specifically, the header 11 of the outdoor heat exchanger 3, the U-shaped tube 12 as a heat transfer tube, the connecting tube 13 that connects the header 11 and the U-shaped tube 12, and the inner surface of the rear panel 2f facing these A soundproof material 10 is disposed in a gap or clearance between the two. Further, the soundproofing material 10 is disposed away from the compressor 6.

  As shown in FIGS. 4 to 6, the sound insulating material 10 has a rectangular shape, and includes a sound insulating sheet 15 and a sound absorbing layer 16 provided on one side of the sound insulating sheet 15. A locking portion 17 for locking the soundproofing material 10 to the outdoor heat exchanger 3 is formed at one corner of the upper portion of the sound insulating sheet 15 (the portion positioned above when disposed in the outdoor unit). A support leg 18 is formed at the lower corner of the sound insulating sheet 15 on the same side as the locking portion 17. The support legs 18 play a role of supporting the soundproofing material 10 by contacting the bottom plate 2 b of the outdoor casing 2 when the soundproofing material 10 is disposed in the outdoor casing 2. The upper portion of the soundproof material 10 is locked to the outdoor heat exchanger 3 by the locking portion 17 and the lower portion of the soundproof material 10 is supported by the support legs 18 so that the soundproof material 10 can be positioned reliably. it can.

  In the present embodiment, the locking portion 17 is formed of a rectangular first protruding piece that protrudes laterally from the side edge of the rectangular sound insulating sheet 15, and the support leg 18 is also the same as that of the sound insulating sheet 15. It consists of a rectangular 2nd protrusion piece which protrudes below from a lower edge.

  The locking portion 17 is formed with a locking hole 19 having a size that can be locked to the straight tube portion 12 a of the U-shaped tube 12 of the outdoor heat exchanger 3. Specifically, the diameter of the locking hole 19 is approximately the same as the outer diameter of the straight tube 12 a of the U-shaped tube 12. Moreover, the notch 20 which connects the peripheral edge of the locking hole 19 and the lower edge (edge part) of the first protruding piece is formed in the first protruding piece. In this case, the soundproofing material 10 can be attached to a predetermined position in the outdoor casing by using the straight pipe portion 12a of the U-shaped tube 12 of the outdoor heat exchanger 3. FIGS. 7-8 has shown the state which attached the soundproof material 10 to the straight pipe | tube part 12a of the U-shaped pipe 12, and in order to make it intelligible, illustration of the outdoor unit casing 2 is abbreviate | omitted. In order to attach the soundproof material 10 to the outdoor heat exchanger 3, first, in a state where casing members other than the bottom plate 2 b (back panel 2 f, top plate 2 a, etc.) are not mounted at predetermined positions, the locking portion 17 of the sound insulating sheet 15 is firstly provided. The first projecting piece constituting the first bent piece is bent from the base to the inside of the machine, and then the notch 20 is pressed against the straight pipe part 12a of the U-shaped pipe 12 so that the notch 20 is opened. It leads to the locking hole 19 of the locking part 17. Thereby, the soundproof material 10 can be easily attached to the outdoor heat exchanger 3.

  The soundproof material 10 in the present embodiment is disposed in an empty space between the inner surface of the back panel 2f and a device such as the outdoor heat exchanger 3 or the refrigerant pipe. For this reason, a necessary soundproof material can be arrange | positioned, without enlarging the outdoor unit 1. And by providing the soundproofing material 10, the thickness of the conventional soundproofing material mounted on the compressor 6 can be reduced or omitted, so that a space around the compressor is provided. As a result, the apparatus can be reduced in size. In addition, since the soundproofing material is disposed away from the compressor 6, it is possible to prevent or suppress the low-frequency noise caused by the vibration of the compressor 6 from being propagated to the outside. In the present embodiment, a soundproof material 40 having a thickness smaller than that of the conventional one is attached to the outer periphery of the compressor 6 and the attached accumulator 6a that is an accessory thereof.

  In the present embodiment, positioning guides 30 are erected on the peripheral portion of the bottom plate 2b of the outdoor casing 2 and the peripheral portion on the back side of the bottom plate 2b. The guide 30 is erected at a position separated from the rear side edge of the bottom plate 2b by a distance slightly larger than the thickness of the soundproofing material 10. In addition, the height of the guide 30 is set to a height at which the guide 30 can be brought into contact with the lower end of the soundproof material 10. By providing such a guide 30, the soundproof material 10 can be easily and reliably arranged before or after the soundproof material 10 is locked to the outdoor heat exchanger 3. Note that the guide 30 may be provided at a plurality of locations, or may be a continuous wall-shaped guide.

  The sound insulation sheet 15 is made of a vinyl chloride sound insulation sheet, and the thickness thereof is not particularly limited in the present invention. However, in consideration of handling properties, sound insulation properties, cost, etc., the thickness is usually about 2 to 4 mm. It is a guide. Further, the sound absorbing layer 16 can be made of a sound absorbing felt or the like, and the thickness thereof is not particularly limited in the present invention, but is usually 5 to 5 in consideration of handling property, sound absorbing property, cost and the like. The standard is about 20 mm. The sound absorbing layer 16 can be fixed to the surface of the sound insulating sheet 15 by sticking with an adhesive or the like. The sound insulation sheet 15 made of synthetic rubber can give a certain degree of rigidity, for example, by having a thickness of about 3 mm, so that it can be sufficiently self-supporting by locking the upper end on one side and supporting the lower end on one side. Can do.

  In the present embodiment, the height of the soundproofing material 10 is such that the lower end edge of the soundproofing material 10 at a portion other than the support leg 18 is located below the upper end of the rising wall 2b1 at the peripheral edge of the bottom plate of the outdoor casing 2. Or a vertical size is selected. Thereby, since the soundproofing material 10 and the rising wall 2b1 at the peripheral edge of the bottom plate of the outdoor casing 2 overlap in the horizontal direction, the leakage of noise from the compressor 6 to the outside can be further reduced.

  In the present embodiment, a substantially vertical notch 31 is formed at the lower end of the soundproof material 10. When such a notch 31 is provided, the lower portion of the soundproofing material 10 can be deformed relatively easily after the soundproofing material 10 is disposed at a predetermined location of the outdoor unit 1, for example, outdoor unit installation. Operations related to equipment and piping located on the back side (opposite side of the outdoor casing 2) of the soundproofing material 10, such as piping connection work at a place, can be easily performed. The position, shape, size, and the like of the notch 31 can be appropriately selected according to the model of the outdoor unit.

[Other variations]
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. For example, in the above-described embodiment, the soundproofing material is disposed only on the back side of the outdoor casing. It is also possible to extend the material.

  Further, in the above-described embodiment, the engaging portion of the soundproof material is engaged with the straight pipe portion of the U-shaped tube of the outdoor heat exchanger. However, it is not related to other parts of the outdoor heat exchanger such as a tube plate. It can also be stopped. In this case, the tube plate is provided with a locked portion such as a protrusion that can be engaged with the locking portion of the soundproof material.

  In the above-described embodiment, the soundproofing material is locked to the outdoor heat exchanger using the locking holes formed in the locking portion. However, the soundproofing material made of a sheet body is related to the outdoor heat exchanger. As a means for stopping, a known locking means can be adopted as appropriate, for example, a hook is provided at the end of the soundproof material, and a receiving part capable of engaging the hook with the tube plate of the outdoor heat exchanger is provided, The soundproofing material can be locked to the outdoor heat exchanger by hooking the hook on the receiving portion.

  In the above-described embodiment, the sound absorbing layer is provided on one side of the sound insulating sheet. However, the sound absorbing layer may be provided on both sides of the sound insulating sheet. Furthermore, a sheet made of a single material can be used as the soundproofing material as long as it has both sound insulation and sound absorption.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Outdoor casing 2b Bottom plate 2f Rear panel 3 Outdoor heat exchanger 4 Outdoor fan 5 Blower room 6 Compressor 7 Accumulator 8 Machine room 10 Soundproof material 12 U-shaped pipe 12a Straight pipe part 15 Sound insulation sheet 16 Sound absorption layer 17 Locking Part 18 Support leg 19 Locking hole 20 Notch 30 Guide 31 Notch

Claims (11)

An air conditioner outdoor unit (1) in which a compressor (6) and a heat exchanger (3) are housed in a casing (2),
A soundproof material (10) comprising a sheet body that can be disposed along at least a part of the inner surface of the casing (2) and is spaced apart from the compressor (6) ;
The soundproof material (10) is have a locking portion (17) which is freely engaged detachably to the heat exchanger (3), and,
The soundproof material (10), said casing (2) of the bottom plate abuts the soundproofing material on the inner surface (10) supporting leg (18) air conditioner outdoor unit, characterized by have a for supporting the (1 ). An air conditioner outdoor unit (1) in which a compressor (6) and a heat exchanger (3) are housed in a casing (2),
A soundproof material (10) comprising a sheet body that can be disposed along at least a part of the inner surface of the casing (2) and is spaced apart from the compressor (6);
The soundproof material (10) has a locking portion (17) that is detachably locked to the heat exchanger (3), and
The air conditioner characterized in that the engaging portion (17) has an engaging hole (19) that can be engaged with a U-tube straight pipe portion (12a) of a heat transfer tube of the heat exchanger (3). Outdoor unit (1). An air conditioner outdoor unit (1) in which a compressor (6) and a heat exchanger (3) are housed in a casing (2),
A soundproof material (10) comprising a sheet body that can be disposed along at least a part of the inner surface of the casing (2) and is spaced apart from the compressor (6);
The soundproof material (10) has a locking portion (17) that is detachably locked to the heat exchanger (3), and
An outdoor unit (1) for an air conditioner, wherein a notch (31) in a substantially vertical direction is formed at a lower end of the soundproof material (10). The air conditioner according to any one of claims 1 to 3, wherein the sound insulating material (10) includes a sound insulating sheet (15) and a sound absorbing layer (16) provided on a surface of the sound insulating sheet (15). Outdoor unit (1). The soundproof material (10) is rectangular.
The locking portion (17) is formed at one corner of the upper portion of the soundproof material (10), and
The outdoor unit (1) for an air conditioner according to claim 1 , wherein the support leg (18) is formed at a lower corner of the soundproofing material (10) on the same side as the locking portion (17). . The locking portion (17) is composed of a first protruding piece protruding sideways from a side edge of the rectangular soundproof material (10), and
The outdoor unit (1) for an air conditioner according to claim 5 , wherein the support leg (18) includes a second projecting piece projecting downward from a lower edge of the rectangular soundproof material (10). The lower edge of the soundproofing material (10) in the supporting leg (18) than the portion of is located below the upper end of the bottom plate periphery of the rising wall of the casing (2) (2b1), according to claim 5 or 6 Air conditioner outdoor unit (1). And peripheral edge of the locking hole (19), notch connecting the edge of the first projecting piece to which the locking holes (19) are formed (20) is formed, according to claim 2 Air conditioner outdoor unit (1). The sound insulating sheet (15) is a rubber sheet having a thickness of 2 to 4 mm, and
The outdoor unit (1) for an air conditioner according to any one of claims 1 to 8, wherein the sound absorbing layer (16) is made of a sound absorbing felt having a thickness of 5 to 20 mm. The outdoor unit of an air conditioner according to any one of claims 1 to 9, wherein the soundproofing material (10) is disposed along an inner surface of a rear side casing (2f) of the outdoor unit (1). 1). The air according to any one of claims 1 to 10 , wherein a guide (30) for positioning a lower end of the soundproof material (10) is provided upright at a peripheral portion of a bottom plate (2b) of the casing (2). Harmonic outdoor unit (1).

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