Compressor cover

Abstract

The present invention relates to a compressor cover, the compressor cover comprising: a sound-absorbing material for absorbing the noise of a compressor; and a sound-insulating material for reflecting or absorbing noise that passes through the sound-absorbing material, the sound-absorbing material being formed as an adhesive material that adheres the sound-insulating material to the compressor, and thus being able to be formed to correspond to the outer surface of a compressor having a complicated shape such as an irregular shape, thereby improving productivity and costs.

Description

Compressor cover

[0001] The present invention relates to a compressor cover, and more particularly, to a compressor cover that can prevent noise from a compressor compressing a refrigerant from being transmitted to the outside.

[0002] Typically, automobiles are equipped with air conditioning (A / C) systems to cool and heat the interior. These A / C systems' cooling systems include a compressor that compresses low-temperature, low-pressure gaseous refrigerant drawn from the evaporator into high-temperature, high-pressure gaseous refrigerant and sends it to the condenser.

[0003] Additionally, the compressor may include a cover to prevent the compressor noise from being transmitted to the outside.

[0004] Fig. 1 is an exploded perspective view showing a conventional compressor cover, and Fig. 2 is a cross-sectional view showing a state in which a compressor with the compressor cover of Fig. 1 applied is mounted on a vehicle.

[0005] Referring to FIG. 1, a conventional compressor cover (20) includes a sound-absorbing material (22) for absorbing noise of the compressor (10) and a sound-insulating material (24) for reflecting or absorbing noise passing through the sound-absorbing material (22).

[0006] Here, the sound-absorbing material (22) includes a first sound-absorbing material (22a) for covering one side of the compressor (10) and a second sound-absorbing material (22b) for covering the other side of the compressor (10), and the sound-insulating material (24) includes a first sound-insulating material (24a) for covering the first sound-absorbing material (22a) and a second sound-insulating material (24b) for covering the second sound-absorbing material (22b), and the first sound-absorbing material (22a), the second sound-absorbing material (22b), the first sound-insulating material (24a), and the second sound-insulating material (24b) are each formed separately and then assembled with a clamp or the like to almost completely cover the compressor (10).

[0007] However, in the conventional compressor cover (20), there is a limit to the compressor cover (20) being formed to correspond to the outer surface of the compressor (10) having a complex shape such as unevenness, and as illustrated in FIG. 2, the compressor cover (20) (more precisely, the sound-absorbing material (22)) is formed to contact the most protruding portion of the outer surface of the compressor (10). Accordingly, the overall size of the compressor cover (20) (more precisely, the distance from the outer surface of the compressor (10) to the outer surface of the sound-absorbing material (24)) increases, and sufficient space must be provided between the compressor (10) and the vehicle (30) on which the compressor (10) is mounted so that the compressor cover (20) can be interposed. In this case, the distance between the compressor (10) and the vehicle (30) increases, resulting in a structure in which the compressor (10) is likely to vibrate with respect to the vehicle (30). On the other hand, when the distance between the compressor (10) and the vehicle (30) is reduced so that the compressor (10) has a structure that is difficult to vibrate with respect to the vehicle (30), there is insufficient space for the compressor cover (20) to be interposed between the compressor (10) and the vehicle (30), so that the thickness of the compressor cover (20) must be reduced. In this case, the noise of the compressor (10) is not sufficiently reduced by the compressor cover (20). In addition, there was a problem in that a gap (G) exists between the compressor cover (20) (more precisely, the sound-absorbing material (22)) and the compressor (10), resonance occurs due to the gap (g), noise increases, and moisture flows into the gap (G) and rust occurs in the compressor (10).

[0008] Meanwhile, the conventional compressor cover (20) had a problem of difficulty in assembling, which resulted in deterioration in productivity and cost.

[0009] Accordingly, the present invention aims to provide a compressor cover formed to correspond to the outer surface of a compressor having a complex shape such as unevenness.

[0010] In addition, another object of the present invention is to provide a compressor cover that can improve productivity and cost.

[0011] The present invention provides a compressor cover, which comprises a sound-absorbing material for absorbing noise of a compressor, and a sound-insulating material for reflecting or absorbing noise passing through the sound-absorbing material, in order to achieve the above-described purpose, and wherein the sound-absorbing material is formed in the form of an adhesive that adheres the sound-insulating material to the compressor.

[0012] The space between the compressor and the sound-insulating material is filled with the sound-absorbing material, so that the inner surface of the sound-absorbing material can be in contact with the outer surface of the compressor, and the outer surface of the sound-absorbing material can be in contact with the inner surface of the sound-insulating material.

[0013] The above sound absorbing material and the above sound insulating material can be formed to cover a portion of the above compressor.

[0014] The compressor may include a fixed scroll and an orbiting scroll that is engaged with the fixed scroll and rotates, the sound insulation material may include a compression sound insulation material that is arranged on an outer circumference of the fixed scroll in a rotational radial direction of the orbiting scroll, and the sound absorption material may include a compression sound absorption material that adheres the compression sound insulation material to the outer circumference of the fixed scroll.

[0015] The above compression section sound-insulating material and the above compression section sound-absorbing material can each be formed in an annular shape extending along the outer periphery of the fixed scroll.

[0016] The above compression sound insulation material may include two ends that are segmented from each other in the circumferential direction of the compression sound insulation material.

[0017] The compressor may include a motor that generates power, an inverter that controls the motor, and an inverter cover that covers the inverter, and the inverter cover may include a disc portion that is disposed on an opposite side of the motor with respect to the inverter, and a protrusion portion that protrudes radially outward from the disc portion, and the sound-insulating material may include an inverter part sound-insulating material that is disposed on an opposite side of the inverter with respect to the disc portion, and the sound-absorbing material may include an inverter part sound-absorbing material that adheres the inverter part sound-insulating material to the disc portion.

[0018] The inverter sound-insulating material and the inverter sound-absorbing material each include a first portion disposed at the center of the disk portion and a second annular portion disposed at the outer periphery of the first portion, and the first portion and the second portion each include an inner surface facing the inverter cover and an outer surface forming a back surface of the inner surface, and a distance between the outer surface of the first portion and the inverter cover may be formed to be smaller than a distance between the outer surface of the second portion and the inverter cover.

[0019] The first portion may be formed such that the distance between the outer surface of the first portion and the inverter cover decreases as the first portion gets closer to the center of the first portion in the radial direction.

[0020] The first portion may be formed such that the rate of change in the distance between the outer surface of the first portion and the inverter cover decreases as the first portion gets closer to the center of the first portion in the radial direction.

[0021] The inverter part sound-insulating material and the inverter part sound-absorbing material each further include a third annular portion arranged on the outer periphery of the second portion, the third portion including an inner surface facing the inverter cover and an outer surface forming a back surface of the inner surface, and a distance between the outer surface of the third portion and the inverter cover may be formed to be smaller than a distance between the outer surface of the second portion and the inverter cover.

[0022] The third portion may be formed such that the distance between the outer surface of the third portion and the inverter cover decreases as the third portion gets closer to the center of the third portion in the radial direction.

[0023] The third portion may be formed such that the rate of change in the distance between the outer surface of the third portion and the inverter cover decreases as the third portion gets closer to the center of the third portion in the radial direction.

[0024] The compressor may include a rear housing having a discharge chamber that accommodates compressed refrigerant, the sound insulation material may include a discharge part sound insulation material arranged on an opposite side of the discharge chamber with respect to the rear housing, and the sound absorption material may include a discharge part sound absorption material that adheres the discharge part sound insulation material to the rear housing.

[0025] The compressor may include a lug into which a mounting member for mounting the compressor to a vehicle is inserted, the sound-insulating material may include a mounting sound-insulating material disposed on the lug, and the sound-absorbing material may include a mounting sound-absorbing material that adheres the mounting sound-insulating material to the lug.

[0026] A compressor cover according to the present invention comprises a sound-absorbing material for absorbing noise of a compressor; and a sound-insulating material for reflecting or absorbing noise passing through the sound-absorbing material; and since the sound-absorbing material is formed in the form of an adhesive that adheres the sound-insulating material to the compressor, it can be formed to correspond to an outer surface of the compressor having a complex shape such as unevenness.

[0027] Additionally, productivity and cost can be improved.

[0028] Figure 1 is an exploded perspective view showing a conventional compressor cover;

[0029] Fig. 2 is a cross-sectional view showing a state in which a compressor with the compressor cover of Fig. 1 applied is mounted on a vehicle.

[0030] Figure 3 is a cross-sectional view showing a state in which a compressor with a compressor cover applied according to one embodiment of the present invention is mounted on a vehicle;

[0031] Fig. 4 is a perspective view showing the compressor cover and compressor of Fig. 3;

[0032] FIG. 5 is a perspective view showing a compressor cover according to another embodiment of the present invention;

[0033] Figure 6 is a cross-sectional view taken along line Ⅰ-Ⅰ of Figure 5.

[0034] FIG. 7 is a perspective view showing a compressor cover according to another embodiment of the present invention;

[0035] Figure 8 is a cross-sectional view taken along line II-II of Figure 7.

[0036] Hereinafter, the compressor cover according to the present invention will be described in detail with reference to the attached drawings.

[0037] FIG. 3 is a cross-sectional view showing a state in which a compressor with a compressor cover applied according to one embodiment of the present invention is mounted on a vehicle, and FIG. 4 is a perspective view showing the compressor cover and compressor of FIG. 3.

[0038] As shown in these drawings, a compressor cover (200) according to one embodiment of the present invention may include a sound-absorbing material (200a) for absorbing noise of the compressor (100) and a sound-insulating material (200b) for reflecting or absorbing noise passing through the sound-absorbing material (200a).

[0039] Here, the sound-insulating material (200b) is formed to have a predetermined shape, for example, from polypropylene, and the sound-absorbing material (200a) can be formed in the form of an adhesive that adheres the sound-insulating material (200b) to the compressor (100).

[0040] According to this configuration, the compressor cover (200) of the present embodiment can be formed to correspond to the outer surface of the compressor (100) having a complex shape such as unevenness, as the sound-absorbing material (200a) is formed in the form of an adhesive. That is, as illustrated in FIG. 3, the space between the compressor (100) and the sound-insulating material (200b) is filled with the sound-absorbing material (200a) in the form of an adhesive, so that the inner surface of the sound-absorbing material (200a) can be in contact with the outer surface of the compressor (100), and the outer surface of the sound-absorbing material (200a) can be in contact with the inner surface of the sound-insulating material (200b).

[0041] Accordingly, compared to the conventional case, the compressor cover (200) can be pressed closer to the compressor (100) without significantly reducing the overall thickness, so that the overall size of the compressor cover (200) (more precisely, the distance from the outer surface of the compressor (100) to the outer surface of the sound insulation material (200b)) can be reduced. Accordingly, even if the space between the compressor (100) and the vehicle (300) on which the compressor (100) is mounted is narrow, the compressor cover (200) can be sufficiently interposed in the narrow space. In addition, when the compressor cover (200) is interposed in the space between the compressor (100) and the vehicle (300), the compressor cover (200) can be positioned as close to the vehicle (300) as possible within a range that does not interfere with the vehicle (300) so that the compressor (100) has a structure that is difficult to vibrate with respect to the vehicle (300). That is, the distance between the compressor (100) and the vehicle (300) can be reduced to a level equivalent to the thickness of the compressor cover (200).

[0042] In addition, since there is no gap between the compressor cover (200) (more precisely, the sound-absorbing material (200a)) and the compressor (100), problems such as increased noise and rust caused by the gap can be prevented.

[0043] Here, the compressor cover (200) may be formed to cover a part of the compressor (100). Specifically, the compressor (100) may include a fixed scroll (150) and a rotating scroll that is engaged with the fixed scroll (150) and rotates, and the compressor cover (200) may include a compression part cover (210) having a compression part sound-absorbing material (210a) that is arranged on an outer circumference of the fixed scroll (150) in the rotation radius direction of the rotating scroll as shown in FIG. 4 and that adheres the compression part sound-absorbing material (210b) to the outer circumference of the fixed scroll (150).

[0044] Here, when the fixed scroll (150) is exposed to the outside of the housing as in the present embodiment, the compression sound insulation material (210b) is adhered to the outer surface of the fixed scroll (150) by the compression sound absorption material (210a), but when the fixed scroll (150) is accommodated inside the housing, the compression sound insulation material (210b) can be adhered to the outer surface of a portion of the housing facing the outer surface of the fixed scroll (150) by the compression sound absorption material (210a).

[0045] And, in the case of the present embodiment, the compression part sound insulation material (210b) and the compression part sound absorption material (210a) are each formed in a closed ring shape like an O-ring extending along the outer circumference of the fixed scroll (150), but are not limited thereto. That is, for example, for easy assembly, the compression part sound insulation material (210b) may be formed in an open ring shape like the letter 'C' extending along the outer circumference of the fixed scroll (150). In other words, the compression part sound insulation material (210b) may be formed in an open ring shape including both ends segmented from each other in the circumferential direction of the compression part sound insulation material (210b). In this case, the compression part sound absorption material (210a) should be formed in a shape corresponding to the open ring-shaped compression part sound insulation material (210b), but does not necessarily have to be formed in an open ring shape.

[0046] In this way, since the compressor cover (200) is formed to cover only a portion of the compressor (100) rather than the entire compressor (100), it can be easily attached to and detached from the compressor (100). Accordingly, not only can productivity and cost be improved, but also maintainability can be enhanced.

[0047] Meanwhile, in the present embodiment, the compressor cover (200) is formed to cover the outer peripheral portion of the fixed scroll (150), which is a major noise radiator among parts of the compressor (100), but is not limited thereto.

[0048] For example, as shown in FIGS. 5 and 6, when the compressor (100) includes a motor that generates power, an inverter that controls the motor, and an inverter cover (116) that covers the inverter, and the inverter cover (116) includes a disc portion (116a) that is positioned on the opposite side of the motor with respect to the inverter and a protrusion portion (116b) that protrudes radially outward from the disc portion (116a) of the disc portion, the compressor cover (200) can be formed to cover the disc portion (116a), which is another noise radiator. That is, the compressor cover (200) may include an inverter unit cover (220) having an inverter unit sound-absorbing material (220a) that is arranged on the opposite side of the inverter with respect to the disk unit (116a) and an inverter unit sound-absorbing material (220b) that adheres the inverter unit sound-absorbing material (220b) to the disk unit (116a).

[0049] Here, the inverter cover (220) can be formed into a predetermined shape to effectively reduce noise by suppressing the noise's tendency to spread radially.

[0050] Specifically, in order to effectively reduce noise radiated from the center, which is the main noise radiator, among the disk portions (116a), the inverter portion sound-absorbing material (220a) and the inverter portion sound-insulating material (220b) each include a first portion (222a, 222b) arranged at the center of the disk portion (116a) and an annular second portion (224a, 224b) arranged at the outer periphery of the first portion (222a, 222b), and the first portion (222a, 222b) and the second portion (224a, 224b) each include an inner surface facing the inverter cover (116) and an outer surface (222aa, 222ba, 224aa, 224ba) forming the back surface of the inner surface, and the outer surface (222aa, 222ba) of the first portion (222a, 222b) The distance between the second portion (224a, 224b) and the inverter cover (116) may be formed to be smaller than the distance between the outer surface (224aa, 224ba) of the second portion (224a, 224b) and the inverter cover (116).

[0051] At this time, it may be preferable that the first portion (222a, 222b) be formed so that the distance between the outer surface (222aa, 222ba) of the first portion (222a, 222b) and the inverter cover (116) decreases as the first portion (222a, 222b) gets closer to the center of the first portion (222a, 222b) in the radial direction, and it may be more preferable that the first portion (222a, 222b) be formed so that the rate of change in the distance between the outer surface (222aa, 222ba) of the first portion (222a, 222b) and the inverter cover (116) decreases as the first portion (222a, 222b) gets closer to the center of the first portion (222a, 222b) in the radial direction.

[0052] And, in order to effectively reduce the noise radiated from the outer periphery of the disc portion (116a), the inverter portion sound-absorbing material (220a) and the inverter portion sound-insulating material (220b) further include a third annular portion (226a, 226b) arranged on the outer periphery of the second portion (224a, 224b) and a fourth annular portion (228a, 228b) arranged on the outer periphery of the third portion (226a, 226b), and the third portion (226a, 226b) and the fourth portion (228a, 228b) each include an inner surface facing the inverter cover (116) and an outer surface (226aa, 226ba, 228aa, 228ba) forming the back surface of the inner surface, and the third portion (226a, 226b) The distance between the outer surface (226aa, 226ba) and the inverter cover (116) may be formed to be smaller than the distance between the outer surface (224aa, 224ba) of the second portion (224a, 224b) and the inverter cover (116) and the distance between the outer surface (228aa, 228ba) of the fourth portion (228a, 228b) and the inverter cover (116).

[0053] At this time, it may be preferable that the third portion (226a, 226b) be formed so that the distance between the outer surface (226aa, 226ba) of the third portion (226a, 226b) and the inverter cover (116) decreases as the third portion (226a, 226b) gets closer to the center of the third portion (226a, 226b) in the radial direction, and it may be more preferable that the third portion (226a, 226b) be formed so that the rate of change in the distance between the outer surface (226aa, 226ba) of the third portion (226a, 226b) and the inverter cover (116) decreases as the third portion (226a, 226b) gets closer to the center of the third portion (226a, 226b) in the radial direction.

[0054] Here, since the level of noise radiated from the center of the disc portion (116a) is greater than the level of noise radiated from the outer periphery of the disc portion (116a), it may be preferable that the minimum distance between the outer surface (222aa, 222ba) of the first portion (222a, 222b) and the inverter cover (116) be formed to be smaller than the minimum distance between the outer surface (226aa, 226ba) of the third portion (226a, 226b) and the inverter cover (116).

[0055] As another example, as illustrated in FIGS. 7 and 8, when the compressor (100) includes a rear housing (114) having a discharge chamber for accommodating compressed refrigerant, the compressor cover (200) may be formed to cover the rear housing (114) (particularly, a wall surface facing the discharge chamber), which is another noise radiator. That is, the compressor cover (200) may include a discharge unit cover (230) having a discharge unit sound-insulating material (230b) disposed on the opposite side of the discharge chamber with respect to the rear housing (114) and a discharge unit sound-absorbing material (230a) that adheres the discharge unit sound-insulating material (230b) to the rear housing (114).

[0056] In addition, when the compressor (100) includes a lug (114a) into which a mounting member for mounting the compressor (100) to a vehicle (300) is inserted, the compressor cover (200) may be formed to cover the lug (114a) so as to suppress noise generated from the compressor (100) from being transmitted to the vehicle (300) while suppressing noise of the vehicle (300) from being transmitted to the compressor (100). That is, the compressor cover (200) may include a mounting sound-absorbing material (240b) disposed on the lug (114a) and a mounting sound-absorbing material (240a) that adheres the mounting sound-absorbing material (240b) to the lug (114a).

[0057] Here, the lug (114a) may be formed in the rear housing (114), and in this case, the mounting sound-insulating material (240b) may be formed integrally with the discharge sound-insulating material (230b), and the mounting sound-absorbing material (240a) may be formed integrally with the discharge sound-absorbing material (230a).

Claims

1. Sound-absorbing material to absorb the noise of the compressor; and A sound-insulating material for reflecting or absorbing noise passing through the above sound-absorbing material; A compressor cover in which the above sound-absorbing material is formed in the form of an adhesive that adheres the above sound-insulating material to the compressor.

2. In paragraph 1, A compressor cover in which the space between the compressor and the sound-insulating material is filled with the sound-absorbing material, the inner surface of the sound-absorbing material is in contact with the outer surface of the compressor, and the outer surface of the sound-absorbing material is in contact with the inner surface of the sound-insulating material.

3. In paragraph 1, A compressor cover in which the above sound-absorbing material and the above sound-insulating material are formed to cover a portion of the compressor.

4. In paragraph 3, The above compressor includes a fixed scroll and a rotating scroll that is engaged with the fixed scroll and rotates, The above sound insulation material includes a compressed sound insulation material arranged on the outer periphery of the fixed scroll in the direction of the rotation radius of the rotating scroll, The above sound-absorbing material is a compressor cover including a compression sound-absorbing material that adheres the compression sound-absorbing material to the outer surface of the fixed scroll.

5. In paragraph 4, A compressor cover in which the compression section sound-insulating material and the compression section sound-absorbing material are each formed in an annular shape extending along the outer periphery of the fixed scroll.

6. In paragraph 5, The above compression section sound insulation material is a compressor cover including both ends segmented from each other in the circumferential direction of the compression section sound insulation material.

7. In paragraph 3, The compressor includes a motor that generates power, an inverter that controls the motor, and an inverter cover that covers the inverter. The inverter cover includes a disc portion positioned on the opposite side of the motor with respect to the inverter and a protrusion portion protruding radially outward from the disc portion. The above soundproofing material includes an inverter soundproofing material placed on the opposite side of the inverter based on the disk portion, The above sound-absorbing material is a compressor cover including an inverter sound-absorbing material that adheres the inverter sound-insulating material to the plate portion.

8. In paragraph 7, The above inverter part soundproofing material and the above inverter part sound absorbing material each include a first portion arranged at the center of the disk part and a second annular portion arranged at the outer periphery of the first portion, The first portion and the second portion each include an inner surface facing the inverter cover and an outer surface forming the back surface of the inner surface, A compressor cover in which the distance between the outer surface of the first portion and the inverter cover is formed smaller than the distance between the outer surface of the second portion and the inverter cover.

9. In paragraph 8, A compressor cover in which the first portion is formed such that the distance between the outer surface of the first portion and the inverter cover decreases as the first portion gets closer to the center of the first portion in the radial direction.

10. In paragraph 9, A compressor cover in which the first portion is formed such that the rate of change in the distance between the outer surface of the first portion and the inverter cover decreases as the first portion gets closer to the center of the first portion in the radial direction.

11. In paragraph 8, The above inverter part soundproofing material and the above inverter part sound absorbing material each further include a third annular portion arranged on the outer periphery of the second portion, The third portion includes an inner surface facing the inverter cover and an outer surface forming the back surface of the inner surface, A compressor cover in which the distance between the outer surface of the third portion and the inverter cover is formed smaller than the distance between the outer surface of the second portion and the inverter cover.

12. In paragraph 11, A compressor cover in which the third portion is formed such that the distance between the outer surface of the third portion and the inverter cover decreases as the third portion gets closer to the center of the third portion in the radial direction.

13. In paragraph 12, A compressor cover in which the third portion is formed such that the rate of change in the distance between the outer surface of the third portion and the inverter cover decreases as the third portion gets closer to the center of the third portion in the radial direction.

14. In paragraph 3, The compressor includes a rear housing having a discharge chamber for receiving compressed refrigerant, The above soundproofing material includes a discharge soundproofing material arranged on the opposite side of the discharge chamber based on the rear housing, The above sound-absorbing material is a compressor cover including a discharge part sound-absorbing material that adheres the discharge part sound-insulating material to the rear housing.

15. In paragraph 3, The compressor includes a lug into which a mounting member for mounting the compressor to a vehicle is inserted, The above soundproofing material includes a mounting soundproofing material placed on the lug, The above sound-absorbing material is a compressor cover including a mounting sound-absorbing material that adheres the mounting sound-insulating material to the lug.

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