Air conditioner

Abstract

To provide an air conditioner that can restrain a large displacement of a compressor, and can restrain damage to a compressor accessory connected to the compressor.SOLUTION: An air conditioner according to the present disclosure comprises a compressor 10 in an outdoor machine. The compressor 10 comprises a compressor body 11, a plate-like compressor base plate 13 fixed to a lower end of the compressor body 11, and a fixing mechanism 19 for fixing the compressor base plate 13 to an outdoor machine bottom plate 1 constituting a lower surface of the outdoor machine. An attachment hole 15 is formed in the compressor base plate 13. The fixing mechanism 19 comprises: a rubber bushing 30 fitted into the attachment hole 15, and formed in a hollow shape; a supporting pin 20 fixed to the outdoor machine bottom plate 1, and inserted into the rubber bushing 30; and a fixing part 27 screwed to an upper end of the supporting pin 20. The fixing part 27 is fixed to the rubber bushing 30.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to an air conditioner. [Background technology]

[0002] Patent Document 1 discloses a compressor support for an air conditioner that absorbs compressor vibrations. The compressor support for an air conditioner includes legs that support the compressor and upper and lower rubbers that are separated into upper and lower parts, and the upper and lower rubbers are arranged to sandwich the legs. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 62-119486 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an air conditioner that can suppress large displacement of the compressor and suppress damage to compressor accessories connected to the compressor. [Means for solving the problem]

[0005] The air conditioner of the present disclosure is an air conditioner equipped with a compressor in an outdoor unit, the compressor comprising a compressor body, a plate-shaped compressor base plate fixed to the lower end of the compressor body, and a fixing mechanism for fixing the compressor base plate to a bottom plate that forms the underside of the outdoor unit, the compressor base plate having a mounting hole formed therein, the fixing mechanism comprising a hollow vibration-damping rubber that is fitted into the mounting hole, a support pin that is fixed to the bottom plate and inserted into the vibration-damping rubber, and a fixing portion that is screwed onto the upper end of the support pin, the fixing portion being fixed to the vibration-damping rubber. [Effects of the Invention]

[0006] The air conditioner of the present disclosure can absorb vibrations during compressor operation using anti-vibration rubber. Furthermore, by restricting the deflection of the anti-vibration rubber using the fixing portion, vibrations greater than those during compressor operation caused by a drop or collision of the outdoor unit can be suppressed. This makes it possible to suppress large displacements of the compressor and to suppress damage to compressor accessories connected to the compressor. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of an outdoor unit bottom plate according to the first embodiment; [Figure 2] FIG. 1 is a perspective view of a compressor base plate according to a first embodiment; [Figure 3] Cross-sectional view of the support pin and rubber bushing [Figure 4] Cross-sectional view of a rubber bushing [Figure 5] Cross-sectional view of a rubber bushing according to a second embodiment [Figure 6] Cross-sectional view of a rubber bushing according to a third embodiment DETAILED DESCRIPTION OF THE INVENTION

[0008] (Findings that formed the basis of this disclosure) At the time when the inventors arrived at the idea of ​​the present disclosure, a technique was known in the technical field of air conditioners in which a compressor was held by vibration-isolating rubber to absorb vibrations during operation of the compressor. Outdoor units are required to be able to withstand vibrations caused by shocks during transportation, carrying, or installation. For example, even if the outdoor unit is dropped during transportation, it is required to be able to suppress damage to the compressor and compressor accessories connected to the compressor. The inventors discovered a problem in that conventional vibration-damping rubber cannot suppress large displacements of the compressor when subjected to vibrations greater than those experienced during compressor operation, and in order to solve this problem, they came up with the subject matter of the present disclosure. Therefore, the present disclosure provides an air conditioner that can suppress large displacement of the compressor and suppress damage to compressor accessories connected to the compressor.

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of well-known matters or redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to the drawings. [1-1.Configuration] FIG. 1 is a perspective view of an outdoor unit bottom plate 1 according to the first embodiment. FIG. 2 is a perspective view of a compressor base plate 13 according to the first embodiment. In FIG. 2, the connecting portion between the compressor 10 and the compressor base plate 13 is omitted, but the compressor 10 is fixed to the compressor base plate 13. The outdoor unit bottom plate 1 is a plate-like member that forms the underside of the outdoor unit of the air conditioner, and is installed substantially horizontally. The outdoor unit bottom plate 1 is made of sheet metal or the like. The outdoor unit bottom plate is an example of a bottom plate that forms the underside of the outdoor unit.

[0011] As shown in Fig. 1, a compressor 10 is attached to the outdoor unit bottom plate 1. The compressor 10 is a component of the refrigeration circuit of the air conditioner. The compressor 10 compresses the gas refrigerant in the refrigeration circuit and discharges it as high-temperature, high-pressure gas refrigerant, thereby circulating the refrigerant in the refrigeration circuit. Although not shown, a pipe is connected to the compressor 10. A refrigerant circulating in a refrigeration circuit flows through the pipe. Vibrations are transmitted from the compressor 10 to the pipe. An accumulator may also be connected to the compressor 10.

[0012] Compressor 10 includes a compressor body 11 and a compressor base plate 13 fixed to the lower end of compressor body 11. Compressor body 11 includes a compression mechanism for compressing a refrigerant and an electric motor for driving the compression mechanism inside a sealed container having a substantially cylindrical outer shape. In this embodiment, compressor 10 is a scroll compressor, and the compression mechanism includes a fixed scroll, an orbiting scroll, etc.

[0013] FIG. 3 is a cross-sectional view of the fixing mechanism 19, showing a cross section passing through the center of the rubber bushing 30 along the vertical direction. The compressor base plate 13 is a plate-like member that is disposed substantially horizontally. The compressor base plate 13 and the compressor body 11 are fixed by, for example, welding so that their centers of gravity are substantially aligned in a plan view. In this embodiment, the compressor base plate 13 has a substantially equilateral triangular shape in a plan view. Mounting holes 15 (see FIG. 3) for mounting the compressor base plate 13 to the outdoor unit bottom plate 1 are formed near each of the three vertices of the compressor base plate 13. As shown in FIG. 1, the compressor 10 is mounted to the outdoor unit bottom plate 1 via a fixing mechanism 19.

[0014] 2, a total of three fixing mechanisms 19 are provided, corresponding to the number of mounting holes 15. The fixing mechanism 19 includes a support pin 20, a fixing portion 27 fixed to the upper portion of the support pin 20, and a rubber bushing 30. The rubber bushing 30 is an example of a vibration-isolating rubber.

[0015] First, the structure of the support pin 20 will be described. The support pin 20 is a bolt-shaped metal member having a head 21 and a shaft 23. The head 21 is formed in the shape of a circular plate, and is oriented horizontally and contacts the outdoor unit bottom plate 1 from above. The head 21 is fixed to the outdoor unit bottom plate 1 by a crimped portion 22 formed on the underside of the head 21. The crimped portion 22 is formed by inserting the head 21 from above into a round hole 3 formed in the outdoor unit bottom plate 1, and then expanding it by crimping.

[0016] The shank 23 has a rod-like structure extending vertically upward from the upper surface of the head 21. A threaded portion 24 having a male thread is provided near the tip of the shank 23. In this embodiment, the shank 23 is formed so that the base 23a, which corresponds to the lower part of the shank 23, is thick. Hereinafter, an imaginary axis passing through the center of the shank 23 and extending parallel to the shank 23 will be referred to as the imaginary axis AX. Furthermore, the direction around the imaginary axis AX will be referred to as the circumferential direction, and the direction perpendicular to the imaginary axis AX will be referred to as the radial direction. The radial direction is an example of a normal direction to the axial direction of the nut part.

[0017] Next, the configuration of the rubber bushing 30 will be described. The rubber bushing 30 is a hollow member having a substantially cylindrical shape with a through-hole S that penetrates vertically in the center. The rubber bushing 30 is made of molded rubber. The rubber bushing 30 comes into contact with the head 21 from above with the shaft 23 of the support pin 20 inserted into the through-hole S. In this embodiment, the rubber bushing 30 has the shape of a body of revolution centered on an imaginary axis AX, and is formed in a uniform shape over the entire circumference.

[0018] The rubber bushing 30 has a side wall 31 that surrounds the shaft portion 23 from all sides in the circumferential direction. The through hole S is a space formed by being separated from the outside by the side wall 31. A first action surface 33 is formed at the lower end of the side wall 31. The first action surface 33 is a horizontal plane formed facing downward, and is in surface contact with the upper surface of the head 21 of the support pin 20 from above. In other words, the rubber bushing 30 is supported by the head 21 of the support pin 20 via the first action surface 33.

[0019] At the lower end of the side wall 31, an inner circumferential surface 31b, which is the radially inner surface of the side wall 31, is formed with an inner protrusion 38 and a rib 39. The inner protrusion 38 protrudes radially inward from the lower end of the inner circumferential surface 31b. The rib 39 is formed facing upward at the radially inner end of the inner protrusion 38. The inner protrusion 38 and the rib 39 are formed uniformly around the entire circumference of the inner circumferential surface 31b. The rib 39 contacts the base 23a of the shaft portion 23 formed on the support pin 20 from the radially outer side. This makes it easier to maintain the rubber bushing 30 in an upright position along the vertical direction.

[0020] In this embodiment, the ribs 39 are configured not to come into contact with the inner circumferential surface 31b. Furthermore, the rubber bushing 30 is configured not to come into contact with the support pin 20 at any location other than the first action surface 33 and the ribs 39. In other words, a gap is provided between the inner circumferential surface 31b and the shaft portion 23 in the radial direction. Therefore, vibrations of the rubber bushing 30 are not easily transmitted to the support pin 20.

[0021] A second action surface 35 and a retaining portion 37 are formed on the upper portion of the side wall 31. The second action surface 35 is a horizontal plane formed on the outer peripheral surface 31a, which is the radially outer surface of the side wall 31, facing radially inward and upward. The retaining portion 37 is formed from the radially inner side of the second action surface 35 toward the upper side. The upper portion of the retaining portion 37 expands radially outward. Therefore, the second action surface 35 and the retaining portion 37 form a fitting groove 36 on the outer peripheral surface 31a. The fitting groove 36 is a groove with a rectangular cross section recessed radially inward on the outer peripheral surface 31a. The fitting groove 36 is formed uniformly around the entire circumference of the outer peripheral surface 31a. The fitting groove 36 fits into the periphery of a mounting hole 15 formed in the compressor base plate 13 of the compressor 10 from the inside of the mounting hole 15. This secures the rubber bushing 30 to the compressor 10. The second working surface 35 is in surface contact with the lower surface of the compressor base plate 13 from below, and supports the compressor 10 from below.

[0022] Next, the configuration of the fixing portion 27 fixed to the upper portion of the support pin 20 will be described. The fixing portion 27 includes a nut portion 26 that is fastened to the threaded portion 24, and a washer portion 25 that is formed integrally with the nut portion 26 and extends in the radial direction. The lower surface of the washer portion 25 and the upper surface of the rubber bushing 30 are fixed together with an adhesive. The washer portion 25 is an example of a plate portion.

[0023] The fixing portion 27 is formed hollow and has an internal thread formed therein to form the nut portion 26. The washer portion 25 is a circular plate-like member extending in the radial direction.

[0024] The washer portion 25 may be welded to the lower portion of the nut portion 26. Even in this case, the nut portion 26 and the washer portion 25 are defined as being integrally formed.

[0025] The rubber bushing 30 is fixed to the support pin 20 by a washer portion 25 fixed to the rubber bushing 30 and a nut portion 26 fastened to the threaded portion 24. As a result, the compressor 10 is attached to the outdoor unit bottom plate 1 while being supported by the rubber bushing 30.

[0026] FIG. 4 is a cross-sectional view of the rubber bushing 30 alone, and shows a cross section similar to that of FIG. 3. Because the rubber bushing 30 is molded using a mold, the rubber bushing 30 is limited to shapes that can be removed from the mold. In this embodiment, because the mold is removed vertically, the inner diameter D1 of the lower part of the through hole S in the rubber bushing 30 is formed to be larger than the inner diameter d2 of the upper part of the through hole S. As a result, the side wall 31 is formed to be thicker at the upper part and thinner at the lower part. In particular, to prevent the inner circumferential surface 31b from contacting the rib 39, it is necessary to expand the lower end of the inner circumferential surface 31b radially outward, and the thickness of the lower end of the side wall 31 is therefore reduced.

[0027] In this embodiment, the outer peripheral surface 31a is formed with a first outer peripheral recess 41 and a second outer peripheral recess 43. In addition, in this embodiment, the inner peripheral surface 31b is formed with a first inner peripheral recess 45 and a second inner peripheral recess 47.

[0028] The first outer peripheral recess 41 and the second outer peripheral recess 43 are recesses that recess radially inward around the entire circumference of the outer peripheral surface 31a. The first outer peripheral recess 41 and the second outer peripheral recess 43 are smoothly curved. The first outer peripheral recess 41 is formed in the lower part of the outer peripheral surface 31a. The second outer peripheral recess 43 is formed in the upper part of the outer peripheral surface 31a and is located higher than the first outer peripheral recess 41. In a cross section passing through the center of the rubber bushing 30 along the vertical direction shown in FIG. 4, the first outer peripheral recess 41 and the second outer peripheral recess 43 of this embodiment are recesses in the shape of part of a circular arc.

[0029] The first inner circumferential recess 45 and the second inner circumferential recess 47 are recesses formed around the entire circumference of the inner circumferential surface 31b and recessed radially outward. The first inner circumferential recess 45 is formed in the lower part of the inner circumferential surface 31b. The second inner circumferential recess 47 is formed in the upper part of the inner circumferential surface 31b and is located higher than the first inner circumferential recess 45. In this embodiment, the second inner circumferential recess 47 is a smoothly curved recess, and its upper end is located at approximately the same height as the second working surface 35. In this embodiment, the upper part of the first inner circumferential recess 45 is smoothly curved and inclined so that the lower side is located radially outward, and the lower part of the first inner circumferential recess 45 is formed in a shape that is straight along the vertical direction in the cross section of FIG. 4.

[0030] As shown in Fig. 4, in the area E1 of the side wall 31 where the first outer peripheral recess 41 is formed, a first minimum thickness portion 41a is formed, where the thickness of the side wall 31 is the smallest in the area E1. The thickness of the side wall 31 is defined as the distance between the inner circumferential surface 31b and the outer circumferential surface 31a on a line perpendicular to the tangent to the outer circumferential surface 31a in the cross section of Fig. 4. Similarly, in the area E2 where the second outer peripheral recess 43 is formed, a second minimum thickness portion 43a is formed, where the thickness of the side wall 31 is the smallest in the area E2. Each of the minimum thickness portions 41a, 43a is a straight line perpendicular to the outer circumferential surface 31a and connecting the outer circumferential surface 31a and the inner circumferential surface 31b in the cross section of Fig. 4.

[0031] As described above, the lower portion of side wall 31 is thinner than the upper portion. Therefore, thickness t1 of side wall 31 at first minimum thickness portion 41a is smaller than thickness T2 of side wall 31 at second minimum thickness portion 43a. In this embodiment, thickness t1 is 4.0 mm, and thickness T2 is 4.2 mm.

[0032] Here, the radius of curvature r1 of the first outer peripheral recess 41 in the first minimum thickness portion 41a is larger than the radius of curvature R2 of the second outer peripheral recess 43 in the second minimum thickness portion 43a. The radii of curvature r1 and R2 of the outer peripheral recesses 41 and 43 in the minimum thickness portions 41a and 43a are, more specifically, the radii of curvature of the outer peripheral recesses 41 and 43 (i.e., the outer peripheral surface 31a) measured at points on the outer peripheral surface 31a of the minimum thickness portions 41a and 43a when viewed in cross section in FIG. 4 . In this embodiment, the radius of curvature r1 is 7.0 mm, and the radius of curvature R2 is 5.5 mm. As described above, in this embodiment, the outer peripheral recesses 41 and 43 have the shape of a portion of a circular arc, and therefore, the outer peripheral recesses 41 and 43 are curved with the same radius of curvature at any position.

[0033] [1-2. Effect] The operation of the air conditioner configured as above will now be described.

[0034] As described above, the rubber bushing 30 is supported by the head 21 of the support pin 20 at the first action surface 33 at the lower end, and supports the compressor 10 at the second action surface 35 at the upper end. With this configuration, vibrations of the compressor 10 during operation are transmitted to the portion of the side wall 31 between the first action surface 33 and the second action surface 35. Such vibrations of the compressor 10 are efficiently absorbed by the side wall 31, which has outer peripheral recesses 41, 43 and inner peripheral recesses 45, 47 on its outer peripheral surface 31a and inner peripheral surface 31b. Furthermore, the compressor base plate 13 is disposed so as to abut only against the rubber bushing 30 of the fixing mechanism 19. Specifically, the area around the mounting hole 15 abuts against the fitting groove 36 of the rubber bushing 30. As a result, the compressor base plate 13 is supported by the flexible rubber bushing 30, which can absorb vibrations caused by the operation of the compressor 10.

[0035] Furthermore, a load equivalent to the weight of the compressor 10 acts on a portion of the side wall 31 that is above the first action surface 33 and below the second action surface 35. As described above, the thickness of the side wall 31 is not uniform. Therefore, if the first outer peripheral recess 41 and the second outer peripheral recess 43 were to have the same shape, unevenness in the stress distribution would easily occur between the range E1 and the range E2, making it easy for stress to concentrate.

[0036] In contrast to this, in the present embodiment, the radius of curvature r1 of the first outer peripheral recess 41 located at the bottom of the thinner side wall 31 is configured to be larger than the radius of curvature R2 of the second outer peripheral recess 43 located at the top of the thicker side wall 31. In other words, the thickness t1 of the first minimum thickness portion 41a is smaller than the thickness T2 of the second minimum thickness portion 43a, and the radius of curvature r1 of the first minimum thickness portion 41a is larger than the radius of curvature R2 of the second minimum thickness portion 43a.

[0037] The smaller the thicknesses t1 and T2 of the minimum thickness portions 41a and 43a, the more likely stress concentration occurs, and the larger the thicknesses t1 and T2, the less likely stress concentration occurs. Furthermore, the smaller the curvature radii r1 and R2 of the outer peripheral recesses 41 and 43 in the minimum thickness portions 41a and 43a, the more likely stress concentration occurs, and the larger the curvature radii r1 and R2, the less likely stress concentration occurs. In this embodiment, the curvature radii r1 and R2 of the first outer peripheral recess 41 and the second outer peripheral recess 43 are changed depending on the thickness of the sidewall 31, thereby suppressing stress unevenness between the ranges E1 and E2 of the sidewall 31 and suppressing stress concentration. Furthermore, in this embodiment, the amount of material used for the rubber bushing 30 can be more easily reduced as a countermeasure against stress concentration than if the thickness of the sidewall 31 were simply increased.

[0038] Furthermore, the outdoor unit is required to be able to withstand vibrations caused by shocks during transportation, carrying, or installation. For example, even if the outdoor unit is dropped during transportation, it is required to be able to suppress damage to the compressor 10 and compressor accessories such as piping and accumulators connected to the compressor 10. Depending on the attitude and direction in which the outdoor unit is dropped, the compressor 10 may shake significantly, increasing the risk of damaging the compressor accessories.

[0039] In this embodiment, as described above, the fixing portion 27 and the rubber bushing 30 are fixed to each other. Because the fixing portion 27 and the support pin 20 are threadedly engaged with each other, the washer portion 25 is unlikely to move relative to the support pin 20, and because the washer portion 25 and the upper end surface of the rubber bushing 30 are fixed to each other, deflection of the rubber bushing 30 is restricted.

[0040] Compared to a case where the fixing portion 27 and the rubber bushing 30 are not fixed to each other, the following effect is achieved: As described above, the vibrations caused by the operation of the compressor 10 are absorbed, and when the outdoor unit is dropped, which generates vibrations with amplitudes several tens to several hundreds of times the maximum amplitude of the vibrations, the rubber bushing 30 does not bend significantly, and the compressor base plate 13 of the compressor 10 is prevented from being significantly displaced in response to the bending of the rubber bushing 30. In this way, vibrations of the compressor 10 during operation can be suppressed, and vibrations that are greater than the vibrations during operation and that occur when the outdoor unit is dropped or hit can also be suppressed.

[0041] [1-3. Effects, etc.] As described above, in this embodiment, the air conditioner is an air conditioner that includes compressor 10 in its outdoor unit, and compressor 10 includes compressor main body 11, plate-shaped compressor base plate 13 fixed to the lower end of compressor main body 11, and fixing mechanism 19 that fixes compressor base plate 13 to outdoor unit bottom plate 1 that forms the underside of the outdoor unit. Compressor base plate 13 is formed with mounting hole 15. Fixing mechanism 19 includes hollow rubber bushing 30 that fits into mounting hole 15, support pin 20 that is fixed to outdoor unit bottom plate 1 and inserted into rubber bushing 30, and fixing portion 27 that screws into the upper end of support pin 20. Fixing portion 27 is fixed to rubber bushing 30. According to this configuration, the rubber bushing 30 can absorb vibrations that occur when the compressor 10 is operating. Furthermore, since the fixing portion 27 restricts the deflection of the rubber bushing 30, it is possible to suppress vibrations that are greater than the vibrations that occur when the compressor 10 is operating, which are caused by a drop or collision of the outdoor unit, etc. Therefore, it is possible to suppress large displacements of the compressor 10 and to suppress damage to compressor accessories connected to the compressor 10.

[0042] The fixing portion 27 also includes a nut portion 26 and a washer portion 25 that is formed integrally with the nut portion 26 and extends in a normal direction to the axial direction of the nut portion 26, i.e., in a radial direction of the imaginary axis AX. The lower surface of the washer portion 25 and the upper surface of the rubber bushing 30 are fixed with an adhesive. According to this configuration, the fixing portion 27 and the rubber bushing 30 can be easily fixed together.

[0043] In addition, the rubber bushing 30 has a fitting groove 36 formed therein into which the portion of the compressor base plate 13 surrounding the mounting hole 15 is inserted, the mounting hole 15 is fitted into the fitting groove 36, and the compressor base plate 13 is in contact with only the rubber bushing 30 of the fixing mechanism 19. According to this configuration, the compressor base plate 13 is supported by the flexible rubber bushing 30, so that vibrations caused by the operation of the compressor 10 can be absorbed.

[0044] (Embodiment 2) Hereinafter, the second embodiment will be described with reference to Fig. 5. The same components as those in Fig. 3 are given the same reference numerals, and the description thereof will be omitted where appropriate.

[0045] [2-1.Configuration] The fixing mechanism 219 in the second embodiment differs from that in the first embodiment in that a fixing portion 227 is different. The fixing portion 227 includes a male thread portion 201 in addition to the nut portion 26 and the washer portion 25 . The fixing portion 227 is formed hollow and has a nut portion 26 that corresponds to a female thread portion machined on the inside.

[0046] The male thread portion 201 is machined into the outside of the fixing portion 227 and is formed with a thick wall. The male thread portion 201 is screwed into the inner cylindrical surface 202 of the rubber bushing 30 so as to cut into it. In other words, the surface 202 is cut into a female thread shape by the male thread portion 201 being screwed into it. Note that the male thread portion 201 may be configured not to cut into the surface 202 of the rubber bushing 30. In this case, the male thread portion 201 is pressed against the surface 202, thereby fixing the fixing portion 227 and the rubber bushing 30 together. The surface 202 may be formed in a conical shape instead of a cylindrical shape. In this case, the male threaded portion 201 may be formed in a conical shape so that the male threaded portion 201 screwed into the rubber bushing 30 does not come off. The retaining portion 37 of the rubber bushing 30 is formed so that the male threaded portion 201 can be screwed in.

[0047] The rubber bushing 30 may further be integrally provided with a female thread portion that screws into the male thread portion 201 . Furthermore, the fixing portion 227 may not be provided with the washer portion 25 .

[0048] [2-2. Effect] The rubber bushing 30 and the fixing portion 227 are fixed together by the male thread portion 201. According to the configuration of the second embodiment, the same effects as those of the first embodiment are achieved.

[0049] [2-3. Effects] As described above, in this embodiment, the air conditioner is an air conditioner that includes compressor 10 in its outdoor unit, and compressor 10 includes compressor main body 11, plate-shaped compressor base plate 13 fixed to the lower end of compressor main body 11, and fixing mechanism 219 that fixes compressor base plate 13 to outdoor unit bottom plate 1 that forms the underside of the outdoor unit. Mounting hole 15 is formed in compressor base plate 13. Fixing mechanism 219 includes hollow rubber bushing 30 that fits into mounting hole 15, support pin 20 that is fixed to outdoor unit bottom plate 1 and inserted into rubber bushing 30, and fixing portion 227 that screws into the upper end of support pin 20. Fixing portion 227 is fixed to rubber bushing 30. According to this configuration, the rubber bushing 30 can absorb vibrations that occur when the compressor 10 is operating. Furthermore, since the fixing portion 27 restricts the deflection of the rubber bushing 30, it is possible to suppress vibrations that are greater than the vibrations that occur when the compressor 10 is operating, which are caused by a drop or collision of the outdoor unit, etc. Therefore, it is possible to suppress large displacements of the compressor 10 and to suppress damage to compressor accessories connected to the compressor 10.

[0050] In addition, the fixing portion 219 is formed hollow and has a nut portion 26 with an internal thread and an external thread 201 with an external thread, and the external thread portion 201 is screwed in so as to cut into the inner cylindrical surface of the rubber bushing 30. According to this configuration, the fixing portion 27 and the rubber bushing 30 can be easily fixed together.

[0051] In addition, the rubber bushing 30 has a fitting groove 36 formed therein into which the portion of the compressor base plate 13 surrounding the mounting hole 15 is inserted, the mounting hole 15 is fitted into the fitting groove 36, and the compressor base plate 13 is in contact with only the rubber bushing 30 of the fixing mechanism 219. According to this configuration, the compressor base plate 13 is supported by the flexible rubber bushing 30, so that vibrations caused by the operation of the compressor 10 can be absorbed.

[0052] (Embodiment 3) Hereinafter, the third embodiment will be described with reference to Fig. 6. The same components as those in Fig. 3 are given the same reference numerals, and the description thereof will be omitted where appropriate.

[0053] [3-1.Configuration] In the fixing mechanism 319 according to the third embodiment, a recessed groove 301 is formed in the rubber bushing 30, into which the washer portion 25 fits. The retaining portion 37 constituting the upper portion of the rubber bushing 30 has a recessed surface 37A formed on its upper end surface in a curved shape. The recessed surface 37A can also be said to be formed in a hemispherical shape. The recessed surface 37A is an example of a guide surface. A guide hole 37B having a diameter larger than that of the washer portion 25 and smaller than that of the washer portion 25 is formed below the lower end of the recessed surface 37A. The recessed surface 37A is formed to be inclined toward the guide hole 37B.

[0054] When the fixing portion 27 is screwed onto the support pin 20, the nut portion 26 is guided by the recessed surface 37 and the guide hole 37B and is housed in the buried groove 301. The buried groove 301 is a groove formed to extend in the radial direction. The diameter of the outermost edge of the buried groove 301 may be smaller than the diameter of the washer portion 25. In this case, the elastic force of the rubber that constitutes the rubber bushing 30 allows the fixing portion 27 to be fixed to the rubber bushing 30 more effectively.

[0055] [3-2. Effect] The washer portion 25 is embedded in the fitting groove 301, thereby fixing the rubber bushing 30 to the fixing portion 27. According to the configuration of the third embodiment, the same effects as those of the first and second embodiments are achieved.

[0056] [3-3. Effects] As described above, in this embodiment, the air conditioner is an air conditioner that includes compressor 10 in its outdoor unit, and compressor 10 includes compressor main body 11, plate-shaped compressor base plate 13 fixed to the lower end of compressor main body 11, and fixing mechanism 319 that fixes compressor base plate 13 to outdoor unit bottom plate 1 that forms the underside of the outdoor unit. Mounting hole 15 is formed in compressor base plate 13. Fixing mechanism 319 includes hollow rubber bushing 30 that fits into mounting hole 15, support pin 20 that is fixed to outdoor unit bottom plate 1 and inserted into rubber bushing 30, and fixing portion 27 that screws into the upper end of support pin 20. Fixing portion 27 is fixed to rubber bushing 30. According to this configuration, the rubber bushing 30 can absorb vibrations that occur when the compressor 10 is operating. Furthermore, since the fixing portion 27 restricts the deflection of the rubber bushing 30, it is possible to suppress vibrations that are greater than the vibrations that occur when the compressor 10 is operating, which are caused by a drop or collision of the outdoor unit, etc. Therefore, it is possible to suppress large displacements of the compressor 10 and to suppress damage to compressor accessories connected to the compressor 10.

[0057] The fixing portion 27 also includes a nut portion 26 and a washer portion 25 that is formed integrally with the nut portion 26 and extends in a normal direction to the axial direction of the nut portion 26, i.e., in a radial direction of the imaginary axis AX. A buried groove 301 that extends in the radial direction is formed in the rubber bushing 30, and the nut portion 26 is disposed buried in the buried groove 301. According to this configuration, the fixing portion 27 and the rubber bushing 30 can be easily fixed together.

[0058] Furthermore, on the upper surface of the rubber bushing 30 above the buried groove 310, a guide surface 37A is formed that is recessed in a substantially hemispherical shape from the outer peripheral edge of the rubber bushing 30 toward the inner edge of the buried groove 301. According to this configuration, when the fixing portion 27 is screwed onto the support pin 20 and the washer portion 25 is buried in the buried groove 301 , the washer portion 25 can be easily guided into the buried groove 301 .

[0059] In addition, the rubber bushing 30 has a fitting groove 36 formed therein into which the portion of the compressor base plate 13 surrounding the mounting hole 15 is inserted, the mounting hole 15 is fitted into the fitting groove 36, and the compressor base plate 13 is in contact with only the rubber bushing 30 of the fixing mechanism 319. According to this configuration, the compressor base plate 13 is supported by the flexible rubber bushing 30, so that vibrations caused by the operation of the compressor 10 can be absorbed.

[0060] (Other embodiments) As described above, Embodiments 1 to 3 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to these and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the components described in Embodiments 1 to 3 above to create new embodiments. Therefore, other embodiments will be exemplified below.

[0061] In the first to third embodiments, the compressor 10 has been described as being supported by three fixing mechanisms 19, 219, and 319, but this is just one example. The compressor 10 may be supported by any number of fixing mechanisms 19, 219, and 319, including one or more. However, in this case, if there are three or more fixing mechanisms 19, 219, and 319, the compressor 10 can be stably supported by the fixing mechanisms 19, 219, and 319 alone.

[0062] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0063] [Configuration supported by the above embodiment] The above embodiment supports the following configurations.

[0064] (Addendum) (Technology 1) An air conditioner equipped with a compressor in an outdoor unit, the compressor comprising a compressor body, a plate-shaped compressor base plate fixed to the lower end of the compressor body, and a fixing mechanism that fixes the compressor base plate to a bottom plate that forms the underside of the outdoor unit, the compressor base plate having a mounting hole formed therein, the fixing mechanism comprising: a hollow vibration-isolating rubber that fits into the mounting hole; a support pin that is fixed to the bottom plate and inserted into the vibration-isolating rubber; and a fixing part that is screwed onto the upper end of the support pin, the air conditioner. With this configuration, the vibration-isolating rubber can absorb vibrations that occur when the compressor is operating. Also, the fixing part restricts the deflection of the vibration-isolating rubber, so vibrations that are greater than the vibrations that occur when the compressor is operating, caused by a drop or collision of the outdoor unit, can be suppressed. This makes it possible to suppress large displacements of the compressor and to prevent damage to compressor accessories connected to the compressor.

[0065] (Technology 2) An air conditioner as described in Technology 1, wherein the fixing portion comprises a nut portion and a plate portion formed integrally with the nut portion and extending in a direction normal to the axial direction of the nut portion, and the lower surface of the plate portion and the upper surface of the vibration-damping rubber are fixed with an adhesive. According to this configuration, the fixing portion and the vibration-isolating rubber can be easily fixed together.

[0066] (Technology 3) The fixing portion is formed hollow and has a female threaded portion machined to have a female thread on the inside and a male threaded portion machined to have a male thread on the outside, and the male threaded portion is screwed into the inner cylindrical surface of the vibration-damping rubber, in an air conditioner as described in Technology 1. According to this configuration, the fixing portion and the vibration-isolating rubber can be easily fixed together.

[0067] (Technology 4) An air conditioner as described in Technology 1, wherein the fixing portion comprises a nut portion and a plate portion formed integrally with the nut portion and extending in the normal direction to the axial direction, and the vibration-damping rubber has a buried groove formed therein and extending in the normal direction to the axial direction, and the plate portion is disposed buried in the buried groove. According to this configuration, the fixing portion and the vibration-isolating rubber can be easily fixed together.

[0068] (Technology 5) An air conditioner as described in Technology 4, in which a guide surface that is approximately hemispherically concave from the outer peripheral edge of the vibration-damping rubber toward the inner edge of the buried groove is formed on the upper surface of the vibration-damping rubber above the buried groove. According to this configuration, when the fixing portion is screwed onto the support pin and the plate portion is buried in the burying groove, the washer portion can be easily guided into the burying groove.

[0069] (Technology 6) An air conditioner described in any one of Technologies 1 to 5, wherein the vibration-damping rubber has a fitting groove formed therein into which the portion of the compressor base plate surrounding the mounting hole is inserted, the mounting hole is fitted into the fitting groove, and the compressor base plate is in contact with only the vibration-damping rubber of the fixing mechanism. According to this configuration, the compressor base plate is supported by flexible vibration-isolating rubber, so that vibrations caused by the operation of the compressor can be absorbed. [Industrial Applicability]

[0070] The present disclosure is applicable to air conditioners, specifically to home or commercial air conditioners. [Explanation of symbols]

[0071] 1 Outdoor unit bottom plate (bottom plate) 3 Round holes 10 Compressor 11 Compressor body 13 Compressor board 15 Mounting holes 19, 219, 319 Fixing mechanism 20 support pin 21 Head 22 Crimping part 23 Shaft 23a root 24 Threaded section 25 Washer part (plate part) 26 Nut part 27, 227 Fixed part 30 Rubber bushing 31 Side wall 31a Outer surface 31b Inner surface 33 First action surface 35 Second action plane 36 Fitting groove 37 Stopper 37A Concave surface 37B guide hole (hole) 38 Inner protrusion 39 Ribs 41 First outer peripheral recess 41a First minimum thickness part 43 Second outer peripheral recess 43a Second minimum thickness part 45 First inner recess 47 Second inner recess 201 Male thread 202 sides 301 Buried trench

Claims

1. An air conditioner equipped with a compressor in an outdoor unit, The compressor includes a compressor body, a plate-shaped compressor base plate fixed to a lower end of the compressor body, and a fixing mechanism that fixes the compressor base plate to a bottom plate that forms a lower surface of the outdoor unit, The compressor base plate has a mounting hole formed therein, The fixing mechanism includes: a hollow vibration-isolating rubber that is fitted into the mounting hole; a support pin fixed to the bottom plate and inserted into the vibration-isolating rubber; a fixing portion that is screwed onto the upper end of the support pin, The fixing portion is fixed to the vibration-isolating rubber. Air conditioner.

2. The fixing portion includes a nut portion and a plate portion that extends in a normal direction to the axial direction of the nut portion and is integrally formed with the nut portion, The lower surface of the plate portion and the upper surface of the vibration-damping rubber are fixed together with an adhesive. The air conditioner according to claim 1.

3. The fixing portion is formed hollow and includes a female threaded portion machined to have a female thread on the inside and a male threaded portion machined to have a male thread on the outside, The male thread portion is screwed into the inner cylindrical surface of the vibration-damping rubber. The air conditioner according to claim 1.

4. The fixing portion includes a nut portion and a plate portion that extends in a normal direction to the axial direction of the nut portion and is integrally formed with the nut portion, The vibration-proof rubber has a buried groove formed therein, which extends in a normal direction to the axial direction, The plate portion is buried and disposed in the buried groove. The air conditioner according to claim 1.

5. The air conditioner according to claim 4, wherein a guide surface is formed on the upper surface of the vibration-damping rubber above the buried groove, the guide surface being approximately hemispherically concave from the outer peripheral edge of the vibration-damping rubber toward the inner edge of the buried groove.

6. The vibration-proof rubber has a fitting groove formed therein into which a portion of the compressor base plate surrounding the mounting hole is inserted, The mounting hole is fitted into the fitting groove, The compressor base plate is in contact with only the vibration-isolating rubber of the fixing mechanism.

6. The air conditioner according to claim 1.

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