Flange, compressor, air conditioner

Abstract

The present invention provides a flange, a compressor, and an air conditioner, wherein the flange includes a flange body and a flange skirt, the flange body is located radially inside the flange skirt, the flange body and the flange skirt are connected, and a hollow area is formed between the flange body and the flange skirt, and a curved surface is formed on the flange skirt, the curved surface conforms to the acoustic black hole principle, and the position of the curved surface corresponds to the position of the hollow area. According to the present invention, when the flange is applied to the pump body of the compressor, and is the upper flange of the pump body, due to the curved surface formed on the flange skirt, the part of the flange skirt where the curved surface is located is an acoustic black hole structure, and the position of the curved surface corresponds to the position of the hollow area formed between the flange body and the flange skirt, so that the vibration energy of the pump body can be gathered to the part of the flange skirt where the curved surface is located, thereby reducing the vibration of the main body, attenuating the vibration transmitted from the pump body to the compressor housing and the liquid reservoir, and then reducing the noise of the compressor and the air conditioner.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a flange, a compressor and an air conditioner. Background Art

[0002] As people's living standards improve, higher requirements are placed on the noise of air conditioners. As the core component and main noise source of air conditioners, vibration reduction and noise reduction of compressors are particularly important. As a component for compressing refrigerant, the pump body of the compressor has various dynamic excitation forces such as electromagnetic, pneumatic and mechanical, which cause the pump body to vibrate. The upper flange (or main bearing) of the pump body and the compressor housing are generally fixed by welding, so the vibration of the pump body will eventually be transmitted through the path of upper flange-welding point-housing, causing vibration and noise radiation of the compressor housing and the accumulator. How to effectively reduce the vibration of the pump body and the transmission of vibration, and then reduce the noise of the compressor and air conditioner is a technical problem that needs to be solved at present. Summary of the invention

[0003] Therefore, the present invention provides a flange that can solve the technical problem that the vibration of the compressor pump body will eventually be transmitted through the path of upper flange-welding point-shell, causing vibration and noise radiation of the compressor shell and the liquid reservoir.

[0004] In order to solve the above problems, the present invention provides a flange, including a flange body and a flange skirt, the flange body is located radially inside the flange skirt, the flange body and the flange skirt are connected, and a hollow area is formed between the flange body and the flange skirt, a curved surface is formed on the flange skirt, the part of the flange skirt where the curved surface is located is an acoustic black hole structure, and the position of the curved surface corresponds to the position of the hollow area.

[0005] In some embodiments, the thickness of the flange skirt gradually decreases or increases in the circumferential direction of the flange skirt to form the curved surface.

[0006] In some embodiments, the curved surface is located radially outside the flange skirt, the flange skirt has an axis, the plane where any cross section of the flange skirt is located is a projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface in the projection plane is a first curve segment, the center of the curvature circle corresponding to any point on the first curve segment is located radially inside the flange skirt, the inner diameter of the flange skirt is 2r1, the first curve segment has endpoints A1 and B1, and the area between the endpoint A1 and the point O is The distance between the endpoint B1 and the point O is r2, the distance between the endpoint B1 and the point O is r3, the line connecting any point on the first curve segment and the point O is the first target line segment, the line connecting the endpoint A1 and the point O is the first line, the line connecting the endpoint B1 and the point O is the second line, the angle formed by the first target line segment and the second line is θ1, the radian corresponding to θ1 is T1, the angle formed by the first line and the second line is θ2, the radian corresponding to θ2 is T2, the length of the first target line segment is L1, L1=a1[r1(T2-T1)] m +r2, where a1=(r3-r2) / (r1*T2) m , 0≤T1≤T2<2Л, r1≤r2<r3, m≥2.

[0007] In some embodiments, the curved surface is located radially inside the flange skirt, the flange skirt has an axis, the plane where any cross section of the flange skirt is located is a projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface in the projection plane is a second curve segment, the center of the curvature circle corresponding to any point on the second curve segment is located radially inside the flange skirt, the outer diameter of the flange skirt is 2r4, the second curve segment has endpoints A2 and B2, and the distance between the endpoint A2 and the point O is The distance between the endpoint B2 and the point O is r5, the distance between the endpoint B2 and the point O is r6, the line connecting any point on the second curve segment and the point O is the second target line segment, the line connecting the endpoint A2 and the point O is the third line, the line connecting the endpoint B2 and the point O is the fourth line, the angle formed by the second target line segment and the third line is θ3, the radian corresponding to θ3 is T3, the angle formed by the third line and the fourth line is θ4, the radian corresponding to θ4 is T4, the length of the second target line segment is L2, L2=r6-a2[r4(T4-T3)] m , where a2=(r6-r5) / (r4*T4) m , 0≤T3≤T4<2Л, r5<r6≤r4, m≥2.

[0008] In some embodiments, the height of the flange skirt gradually decreases or increases in the circumferential direction of the flange skirt to form the curved surface.

[0009] In some embodiments, one axial end of the flange skirt is the bottom end of the flange skirt, the curved surface faces away from the bottom end of the flange skirt, the flange skirt has an axis, the plane where any cross section of the flange skirt is located is a projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface in the projection plane is a first arc plane, the first arc plane has a first hypotenuse and a second hypotenuse, the distance between any point on the curved surface and the bottom end of the flange skirt is h1, the minimum distance between the curved surface and the bottom end of the flange skirt is h2, the maximum distance between the curved surface and the bottom end of the flange skirt is h3, the angle formed between the line connecting any point on the first arc plane and point O and the second hypotenuse is θ5, the radian corresponding to θ5 is T5, the angle formed between the first hypotenuse and the second hypotenuse is θ6, the radian corresponding to θ6 is T6, half of the sum of the inner diameter and the outer diameter of the flange skirt is 2r7, h1=a3[r7(T6-T5)] m +h2, where a3=(h3-h2) / (r7*T6) m , 0≤T5≤T6<2Л, 0≤h2<h3, m≥2.

[0010] In some embodiments, one axial end of the flange skirt is the bottom end of the flange skirt, the curved surface faces the bottom end of the flange skirt, the flange skirt has an axis, the plane where any cross section of the flange skirt is located is a projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface in the projection plane is a second arc plane, the second arc plane has a third hypotenuse and a fourth hypotenuse, the distance between any point on the curved surface and the bottom end of the flange skirt is h4, the minimum distance between the curved surface and the bottom end of the flange skirt is h5, the maximum distance between the curved surface and the bottom end of the flange skirt is h6, the angle formed between the line connecting any point on the second arc plane and point O and the third hypotenuse is θ7, the radian corresponding to θ7 is T7, the angle formed between the third hypotenuse and the fourth hypotenuse is θ8, the radian corresponding to θ8 is T8, half of the sum of the inner diameter and the outer diameter of the flange skirt is 2r7, h4=h6-a4[r7(T8-T7)] m , where a4=(h6-h5) / (r7*T8) m , 0≤T7≤T8<2Л, 0≤h5<h6, m≥2.

[0011] In some embodiments, the weakest part of the flange skirt where the curved surface is located is broken away from the adjacent part of the flange skirt.

[0012] In some embodiments, a damping structure is provided on the curved surface, and the damping structure extends to the weakest part of the flange skirt where the curved surface is located.

[0013] In some embodiments, a plurality of hollow areas are formed between the flange body and the flange skirt, and the hollow areas are spaced apart along the circumference of the flange body. The number of the curved surfaces is also multiple, and the position of each curved surface corresponds to the position of each hollow area.

[0014] The present invention also provides a compressor, comprising the aforementioned flange.

[0015] The present invention also provides an air conditioner, comprising the aforementioned compressor.

[0016] The flange, compressor and air conditioner provided by the present invention have the following beneficial effects:

[0017] When the flange of the present application is applied to the pump body of the compressor and is the upper flange of the pump body, since a special curved surface is formed on the flange skirt, the portion of the flange skirt where the curved surface is located is an acoustic black hole structure, and the position of the curved surface corresponds to the position of the hollow area formed between the flange body and the flange skirt. Therefore, the portion of the flange skirt where the curved surface is located can vibrate freely and absorb energy, so that the vibration energy of the pump body can be concentrated on the portion of the flange skirt where the curved surface is located, thereby reducing the vibration of the main body and attenuating the vibration transmitted from the pump body to the compressor housing and the liquid reservoir, thereby reducing the noise of the compressor and the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 This is a schematic structural diagram of a flange according to Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic structural diagram of a flange according to Embodiment 2 of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the flange of the third embodiment of the present invention;

[0022] Figure 4 A top view of a flange skirt of a flange in the prior art;

[0023] Figure 5A top view of a flange of an embodiment of the present invention in which a curved surface is formed on the flange skirt and the curved surface is located radially outside the flange skirt;

[0024] Figure 6 A top view of a flange of an embodiment of the present invention in which a curved surface is formed on the flange skirt and the curved surface is located radially inward of the flange skirt;

[0025] Figure 7 A top view showing that two curved surfaces are formed on the flange skirt of a flange of an embodiment of the present invention, and the two curved surfaces are respectively located at the radial inner and outer sides of the flange skirt;

[0026] Figure 8 It is a schematic diagram of the structure of the flange skirt of the flange in the prior art;

[0027] Fig. 9 It is a structural schematic diagram of a flange of an embodiment of the present invention in which a curved surface is formed on the flange skirt and the curved surface faces the upper side of the flange skirt;

[0028] Fig.10 It is a structural schematic diagram of a flange of an embodiment of the present invention in which a curved surface is formed on the flange skirt and the curved surface faces the lower side of the flange skirt;

[0029] Fig.11 It is a schematic structural diagram of a flange of an embodiment of the present invention, in which two curved surfaces are formed on the flange skirt, and the two curved surfaces face the upper and lower sides of the flange skirt respectively;

[0030] Fig.12 This is a schematic structural diagram of a flange according to a fourth embodiment of the present invention;

[0031] Fig.13 This is a schematic structural diagram of a flange according to a fifth embodiment of the present invention;

[0032] Fig.14 This is a schematic diagram of the structure of the flange of the sixth embodiment of the present invention;

[0033] Fig.15 This is a schematic diagram of the structure of the flange of Embodiment 7 of the present invention;

[0034] Fig.16 This is a schematic structural diagram of a flange according to Embodiment 8 of the present invention;

[0035] Fig.17 A top view of a flange of an embodiment of the present invention in which a damping structure is arranged on the curved surface of the flange skirt;

[0036] Fig.18 It is a schematic structural diagram of a flange and a compressor housing according to an embodiment of the present invention;

[0037] Fig.19 It is a cross-sectional view of a compressor in the prior art.

[0038] The reference numerals are as follows:

[0039] 1. Flange body; 2. Flange skirt; 3. Hollow area; 4. Curved surface; 5. First curved segment; 6. Second curved segment; 7. First bevel; 8. Second bevel; 9. Third bevel; 10. Fourth bevel; 11. Connecting part; 12. Compressor housing; 13. Motor; 14. Cylinder; 15. Lower flange; 16. Liquid reservoir; 17. Welding hole; 18. Damping structure. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0042] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0043] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] See also Figures 1 to 19 As shown, according to an embodiment of the present invention, a flange is provided, comprising: a flange body 1 and a flange skirt 2, the flange body 1 is located radially inside the flange skirt 2, the flange body 1 and the flange skirt 2 are connected, and a hollow area 3 is formed between the flange body 1 and the flange skirt 2, a curved surface 4 is formed on the flange skirt 2, the portion of the flange skirt 2 where the curved surface 4 is located is an acoustic black hole structure, and the position of the curved surface 4 corresponds to the position of the hollow area 3.

[0045] In this technical solution, when the flange of the present application is applied to the pump body of the compressor and is the upper flange of the pump body, since a special curved surface 4 is formed on the flange skirt 2, the portion of the flange skirt 2 where the curved surface 4 is located is an acoustic black hole structure, and the position of the curved surface 4 corresponds to the position of the hollow area 3 formed between the flange body 1 and the flange skirt 2. Therefore, the portion of the flange skirt 2 where the curved surface 4 is located can vibrate freely and absorb energy, so that the vibration energy of the pump body can be gathered to the portion of the flange skirt 2 where the curved surface 4 is located, thereby reducing the vibration of the main body and attenuating the vibration transmitted from the pump body to the compressor housing 12 and the liquid reservoir 16, thereby reducing the noise of the compressor and the air conditioner.

[0046] See also Figures 1 to 3 As shown, the thickness of the flange skirt 2 gradually decreases or increases in the circumferential direction of the flange skirt 2 to form a curved surface 4. The thickness of the flange skirt 2 refers to the dimension of the wall of the flange skirt 2 in the radial direction along the flange skirt 2. When the curved surface 4 conforming to the acoustic black hole principle is formed in this way, it can absorb and gather vibrations from the radial direction, thereby reducing the vibration of the main body and attenuating the vibration transmitted from the pump body to the compressor housing 12 and the accumulator 16.

[0047] See also Figure 5As shown, the curved surface 4 is located radially outside the flange skirt 2, the flange skirt 2 has an axis, the plane where any cross section of the flange skirt 2 is located is the projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface 4 in the projection plane is the first curved segment 5, the center of the curvature circle corresponding to any point on the first curved segment 5 is located radially inside the flange skirt 2, the inner diameter of the flange skirt 2 is 2r1, the first curved segment 5 has endpoints A1 and B1, and the distance between endpoint A1 and point O is r 2, the distance between endpoint B1 and point O is r3, the line connecting any point on the first curve segment 5 and point O is the first target line segment, the line connecting endpoint A1 and point O is the first line segment, the line connecting endpoint B1 and point O is the second line segment, the angle formed by the first target line segment and the second line segment is θ1, the radian corresponding to θ1 is T1, the angle formed by the first line segment and the second line segment is θ2, the radian corresponding to θ2 is T2, the length of the first target line segment is L1, L1=a1[r1(T2-T1)] m +r2, where a1=(r3-r2) / (r1*T2) m , 0≤T1≤T2<2Л, r1≤r2<r3, m≥2. It should be noted that after the surface 4 is designed, Figure 5 As shown, when T1 is equal to zero, L1 is equal to r3. a1 is the coefficient. Substituting T1=0 and L1=r3 into the formula L1=a1[r1(T2-T1)] m After adding r2, we can get a1=(r3-r2) / (r1*T2) m .

[0048] In this embodiment, when the distance L1 between any point on the first curve segment 5 and point O satisfies the above formula, it can be ensured that the distance between the formed curved surface 4 and point O satisfies the power exponential function change, which is in line with the acoustic black hole principle. Since the curved surface 4 is located radially outside the flange skirt 2, it can absorb and gather vibrations from the radial direction. At the same time, when the curved surface 4 is located radially outside the flange skirt 2, the wall of the flange skirt 2 can be cut from the radial outside to form the curved surface 4, which is convenient for processing and manufacturing. In addition to cutting the wall of the flange skirt 2 to form the curved surface 4, the wall of the flange skirt 2 can also be thickened to form the curved surface 4. However, considering that the flange must be welded and fixed to the compressor housing 12, the present application is more inclined to cut the wall of the flange skirt 2 to form the curved surface 4.

[0049] See also Figure 6As shown, the curved surface 4 is located radially inside the flange skirt 2, the flange skirt 2 has an axis, the plane where any cross section of the flange skirt 2 is located is the projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface 4 in the projection plane is the second curved segment 6, the center of the curvature circle corresponding to any point on the second curved segment 6 is located radially inside the flange skirt 2, the outer diameter of the flange skirt 2 is 2r4, the second curved segment 6 has endpoints A2 and B2, and the distance between endpoint A2 and point O is r5 , the distance between endpoint B2 and point O is r6, the line connecting any point on the second curve segment 6 and point O is the second target line segment, the line connecting endpoint A2 and point O is the third line segment, the line connecting endpoint B2 and point O is the fourth line segment, the angle formed by the second target line segment and the third line segment is θ3, the radian corresponding to θ3 is T3, the angle formed by the third line segment and the fourth line segment is θ4, the radian corresponding to θ4 is T4, the length of the second target line segment is L2, L2=r6-a2[r4(T4-T3)] m , where a2=(r6-r5) / (r4*T4) m , 0≤T3≤T4<2Л, r5<r6≤r4, m≥2. It should be noted that after the surface 4 is designed, Figure 6 As shown, when T3 is equal to zero, L2 is equal to r5. a2 is the coefficient. Substituting T3=0 and L2=r5 into the formula L2=r6-a2[r4(T4-T3)] m After that, we can get a2=(r6-r5) / (r4*T4) m .

[0050] In this technical solution, when the distance L2 between any point on the second curve segment 6 and point O satisfies the above formula, it can be ensured that the distance between the formed curved surface 4 and point O satisfies the power exponential function change, which is in line with the acoustic black hole principle. Since the curved surface 4 is on the radial inner side of the flange skirt 2, it can absorb and gather vibrations from the radial direction. At the same time, when the curved surface 4 is on the radial inner side of the flange skirt 2, the wall of the flange skirt 2 can be cut from the radial inner side to form the curved surface 4. Among them, the effect of the curved surface 4 on absorbing and gathering vibrations from the radial direction is basically the same when it is on the radial inner side or the radial outer side of the flange skirt 2, but the processing and manufacturing of the curved surface 4 is more difficult when it is on the radial inner side of the flange skirt 2. It can be understood that the wall of the flange skirt 2 can be cut from the radial inner side and the radial outer side of the flange skirt 2 at the same time, so as to form two curved surfaces 4 on the radial inner side and the radial outer side of the flange skirt 2, respectively, such as Figure 7 shown.

[0051] See also Figure 12 to Figure 14As shown, the height of the flange skirt 2 gradually decreases or increases in the circumferential direction of the flange skirt 2 to form a curved surface 4. The height of the flange skirt 2 refers to the size of the wall of the flange skirt 2 in the axial direction of the flange skirt 2. When the curved surface 4 conforming to the acoustic black hole principle is formed in this way, it can absorb and gather vibrations from the axial direction, thereby reducing the vibration of the main body and attenuating the vibration transmitted from the pump body to the compressor housing 12 and the accumulator 16.

[0052] See also Fig. 9 As shown, one axial end of the flange skirt 2 is the bottom end of the flange skirt 2, the curved surface 4 is facing away from the bottom end of the flange skirt 2, the flange skirt 2 has an axis, the plane where any cross section of the flange skirt 2 is located is the projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface 4 in the projection plane is the first arc plane, the first arc plane has a first hypotenuse 7 and a second hypotenuse 8, the distance between any point on the curved surface 4 and the bottom end of the flange skirt 2 is h1, the minimum distance between the curved surface 4 and the bottom end of the flange skirt 2 is h2, the maximum distance between the curved surface 4 and the bottom end of the flange skirt 2 is h3, the angle formed between the line connecting any point on the first arc plane and point O and the second hypotenuse 8 is θ5, the radian corresponding to θ5 is T5, the angle formed between the first hypotenuse 7 and the second hypotenuse 8 is θ6, the radian corresponding to θ6 is T6, half of the sum of the inner diameter and the outer diameter of the flange skirt 2 is 2r7, h1=a3[r7(T6-T5)] m +h2, where a3=(h3-h2) / (r7*T6) m , 0≤T5≤T6<2Л, 0≤h2<h3, m≥2. It should be noted that after the surface 4 is designed, Fig. 9 As shown, when T5 is equal to zero, h1 is equal to h3. a3 is the coefficient. Substituting T5=0 and h1=h3 into the formula h1=a3[r7(T6-T5)] m After adding h2, we can get a3=(h3-h2) / (r7*T6) m .

[0053] In this embodiment, when the distance h1 between any point on the curved surface 4 and the bottom end of the flange skirt 2 satisfies the above formula, it can be ensured that the distance between the formed curved surface 4 and the bottom end of the flange skirt 2 satisfies the power exponential function change, which conforms to the acoustic black hole principle. Since the curved surface 4 is facing away from the bottom end of the flange skirt 2, it can absorb and gather vibrations from the axial direction. At the same time, when the curved surface 4 is facing away from the bottom end of the flange skirt 2, the wall of the flange skirt 2 can be cut axially from the top of the flange skirt 2 to form the curved surface 4, which is convenient for processing and manufacturing.

[0054] See also Fig.10As shown, one axial end of the flange skirt 2 is the bottom end of the flange skirt 2, the curved surface 4 faces the bottom end of the flange skirt 2, the flange skirt 2 has an axis, the plane where any cross section of the flange skirt 2 is located is the projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface 4 in the projection plane is the second arc plane, the second arc plane has a third hypotenuse 9 and a fourth hypotenuse 10, the distance between any point on the curved surface 4 and the bottom end of the flange skirt 2 is h4, the curved surface 4 and the flange The minimum distance between the bottom ends of the skirt 2 is h5, the maximum distance between the curved surface 4 and the bottom end of the flange skirt 2 is h6, the angle formed between the line connecting any point on the second arc plane and point O and the third hypotenuse 9 is θ7, the radian corresponding to θ7 is T7, the angle formed between the third hypotenuse 9 and the fourth hypotenuse 10 is θ8, the radian corresponding to θ8 is T8, half of the sum of the inner diameter and the outer diameter of the flange skirt 2 is 2r7, h4=h6-a4[r7(T8-T7)] m , where a4=(h6-h5) / (r7*T8) m , 0≤T7≤T8<2Л, 0≤h5<h6, m≥2. It should be noted that after the surface 4 is designed, Fig.10 As shown, when T7 is equal to zero, h4 is equal to h5. a4 is the coefficient. Substituting T7=0 and h4=h5 into the formula h4=h6-a4[r7(T8-T7)] m After that, we can conclude that a4=(h6-h5) / (r7*T8) m .

[0055] In this technical solution, when the distance h2 between any point on the curved surface 4 and the bottom end of the flange skirt 2 satisfies the above formula, it can be ensured that the distance between the formed curved surface 4 and the bottom end of the flange skirt 2 satisfies the power exponential function change, which is in line with the acoustic black hole principle. Since the curved surface 4 faces the bottom end of the flange skirt 2, it can absorb and gather vibrations from the axial direction. At the same time, when the curved surface 4 faces the bottom end of the flange skirt 2, the wall of the flange skirt 2 can be cut axially from the bottom of the flange skirt 2 to form the curved surface 4, and the processing and manufacturing are also relatively convenient. It can be understood that the effect of the curved surface 4 facing the bottom end of the flange skirt 2 or the bottom end facing away from the flange skirt 2 in absorbing and gathering vibrations from the axial direction is basically the same, it is just the form of expression of the curved surface 4.

[0056] It should be noted that the wall of the flange skirt 2 can be cut from the top and bottom of the flange skirt 2 at the same time, so as to form two curved surfaces 4 on the upper and lower sides of the flange skirt 2, respectively. Fig.11 shown.

[0057] See also Figure 3 and Fig.13As shown, the weakest part of the flange skirt 2 where the curved surface 4 is located is broken from the adjacent part of the flange skirt 2, which makes the curved surface 4 form a perfect acoustic black hole structure, which can prevent the vibration energy accumulated at the weakest part of the flange skirt 2 where the curved surface 4 is located from being transmitted out, and has the best vibration reduction effect.

[0058] See also Fig.17 As shown, a damping structure 18 is provided on the curved surface 4, and the damping structure 18 extends to the weakest part of the flange skirt 2 where the curved surface 4 is located, so that the vibration can be further attenuated. Considering the high temperature, high pressure and refrigerant compatibility in the compressor, it is impossible to implement the damping structure 18 using ordinary viscoelastic rubber materials. The damping structure 18 needs to be a damping alloy, such as ferromagnetic damping alloy Fe-16Cr-2.5Mo.

[0059] As a specific implementation, a plurality of hollow areas 3 are formed between the flange body 1 and the flange skirt 2, and the hollow areas 3 are spaced apart along the circumference of the flange body 1. The number of the curved surfaces 4 is also multiple, and the positions of the curved surfaces 4 correspond to the positions of the hollow areas 3 respectively.

[0060] In this embodiment, the flange body 1 has a plurality of connecting parts 11, and the flange body 1 is connected to the flange skirt 2 through each connecting part 11, and each hollow area 3 is also located between each adjacent two connecting parts 11. Among them, a plurality of welding holes 17 are constructed on the compressor housing 12, and the curved surface 4 that conforms to the acoustic black hole principle is not constructed on the flange skirt 2 corresponding to the connecting part 11 of the flange body 1, so it has a strong bearing capacity. These parts correspond to the welding holes 17 of the compressor housing 12, and the flange skirt 2 is fixed in the compressor housing 12 by spot welding. By constructing a plurality of curved surfaces 4 corresponding to each hollow area 3 on the flange skirt 2, the vibration absorption effect can be increased, and the vibration noise of the compressor can be further reduced. If a plurality of curved surfaces 4 of different sizes are set, such as the span range of the curved surface 4 is different, the vibration absorption effect of different frequency ranges can be increased, and the vibration noise of the compressor can be further reduced. Preferably, each hollow area 3 and each curved surface 4 are evenly distributed on the flange.

[0061] In the case where there are multiple hollow areas 3 and multiple curved surfaces 4, the present application provides flanges in eight different embodiments. Figure 1 Shown is a schematic structural diagram of the flange of Example 1 of the present invention. In Example 1, each curved surface 4 is located radially outside the flange skirt 2, and there are two curved surfaces 4 on the partial flange skirt 2 corresponding to any hollow area 3. The two curved surfaces 4 extend from both sides of the partial flange skirt 2 to the middle, and the middle area of ​​the partial flange skirt 2 is the weakest part of the flange skirt 2. Figure 2Shown is a schematic diagram of the structure of the flange of Example 2 of the present invention. In Example 2, each curved surface 4 is also located radially outside the flange skirt 2. There is only one curved surface 4 on the partial flange skirt 2 corresponding to any hollow area 3, and the end of the curved surface 4 is the weakest point of the flange skirt 2. Figure 3 The structure diagram of the flange of the third embodiment of the present invention is shown. The difference between the third embodiment and the second embodiment is that the weakest part of the flange skirt 2 where the curved surface 4 is located is broken from the adjacent part of the flange skirt 2. The flange skirt 2 in these three embodiments mainly absorbs and gathers vibrations from the radial direction. Since it is convenient to cut the wall of the flange skirt 2 from the radial outside to form the curved surface 4 that conforms to the acoustic black hole principle, the curved surface 4 shown in these three embodiments is located on the radial outside of the flange skirt 2.

[0062] Fig.12 Shown is a schematic structural diagram of the flange of embodiment 4 of the present invention. In embodiment 4, each curved surface 4 is respectively facing away from the bottom end of the flange skirt 2, and there is only one curved surface 4 on the partial flange skirt 2 corresponding to any hollow area 3, and the end of the curved surface 4 is the weakest point of the flange skirt 2. Fig.13 It is a schematic diagram of the structure of the flange of the fifth embodiment of the present invention. The difference between the fifth embodiment and the fourth embodiment is that the weakest part of the flange skirt 2 where the curved surface 4 is located is broken away from the adjacent flange skirt 2. Fig.14 The structure diagram of the flange of the sixth embodiment of the present invention is shown. In the sixth embodiment, each curved surface 4 is facing away from the bottom end of the flange skirt 2. There are two curved surfaces 4 on the part of the flange skirt 2 corresponding to any hollow area 3. The two curved surfaces 4 extend from both sides of the part of the flange skirt 2 to the middle. The middle area of ​​the part of the flange skirt 2 is the weakest part of the flange skirt 2. The flange skirt 2 in these three embodiments mainly absorbs and gathers vibrations from the axial direction. Since it is convenient to cut the wall of the flange skirt 2 from above to form the curved surface 4 that conforms to the principle of acoustic black hole, the three embodiments show that the curved surface 4 is facing away from the bottom end of the flange skirt 2.

[0063] Fig.15 Shown is a schematic diagram of the structure of the flange of Example 7 of the present invention. In Example 7, a portion of the curved surfaces 4 are facing away from the bottom end of the flange skirt 2, and another portion of the curved surfaces 4 are located radially outside the flange skirt 2. The portion of the flange skirt 2 corresponding to any hollow area 3 has only one curved surface 4, and the end of the curved surface 4 is the weakest point of the flange skirt 2. The curved surface 4 facing away from the bottom end of the flange skirt 2 and the curved surface 4 located radially outside the flange skirt 2 are alternately distributed. Fig.16The figure shows the structure diagram of the flange of the eighth embodiment of the present invention. In the eighth embodiment, a part of the curved surfaces 4 are facing away from the bottom end of the flange skirt 2, and another part of the curved surfaces 4 are located radially outside the flange skirt 2. The part of the flange skirt 2 corresponding to any hollow area 3 has two curved surfaces 4, one of the two curved surfaces 4 is facing away from the bottom end of the flange skirt 2, and the other is located radially outside the flange skirt 2. The ends of the two curved surfaces 4 face the same direction, so the end of any curved surface 4 is the weakest part of the flange skirt 2. The flange skirt 2 in these two embodiments can absorb and gather vibrations from both the axial direction and the radial direction.

[0064] The present invention also provides a compressor, including the aforementioned flange, which is the upper flange of the compressor pump body, and the compressor pump body also includes a cylinder 14 and a lower flange 15, and the upper flange and the lower flange 15 are respectively fixed on the upper and lower sides of the cylinder 14. The compressor also includes a compressor housing 12, a motor 13 and a liquid reservoir 16, the motor 13 and the compressor pump body are both inside the compressor housing 12, the liquid reservoir 16 is outside the compressor housing 12, and the upper flange of the pump body is welded to the compressor housing 12, such as Fig.18 It should be noted that if the cylinder 14 is welded to the compressor housing 12 , the curved surface 4 of the present application that complies with the acoustic black hole principle can be constructed on the cylinder 14 .

[0065] The present invention also provides an air conditioner, comprising the aforementioned compressor.

[0066] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A flange, characterized in that: The flange body (1) comprises a flange main body (1) and a flange skirt (2), wherein the flange main body (1) is located radially inside the flange skirt (2), the flange main body (1) and the flange skirt (2) are connected, and a hollow area (3) is formed between the flange main body (1) and the flange skirt (2), a curved surface (4) is formed on the flange skirt (2), the portion of the flange skirt (2) where the curved surface (4) is located is an acoustic black hole structure, and the position of the curved surface (4) corresponds to the position of the hollow area (3); The weakest part of the flange skirt (2) where the curved surface (4) is located is broken off from the adjacent part of the flange skirt (2); A plurality of hollow areas (3) are formed between the flange body (1) and the flange skirt (2), and the hollow areas (3) are spaced apart along the circumference of the flange body (1). The number of the curved surfaces (4) is also a plurality, and the position of each curved surface (4) corresponds to the position of each hollow area (3).

2. The flange according to claim 1, characterized in that: The thickness of the flange skirt (2) gradually decreases or increases in the circumferential direction of the flange skirt (2) to form the curved surface (4).

3. The flange according to claim 2, characterized in that: The curved surface (4) is located radially outside the flange skirt (2); the flange skirt (2) has an axis; the plane on which any cross section of the flange skirt (2) is located is a projection plane; the vertical projection of the axis in the projection plane is point O; the vertical projection of the curved surface (4) in the projection plane is a first curved segment (5); the center of a curvature circle corresponding to any point on the first curved segment (5) is located radially inside the flange skirt (2); the inner diameter of the flange skirt (2) is 2r1; the first curved segment (5) has endpoints A1 and B1; the endpoints The distance between A1 and the point O is r2, the distance between the endpoint B1 and the point O is r3, the line connecting any point on the first curve segment (5) and the point O is the first target line segment, the line connecting the endpoint A1 and the point O is the first line segment, the line connecting the endpoint B1 and the point O is the second line segment, the angle formed by the first target line segment and the second line segment is θ1, the radian corresponding to θ1 is T1, the angle formed by the first line segment and the second line segment is θ2, the radian corresponding to θ2 is T2, the length of the first target line segment is L1, L1=a1[r1(T2-T1)] m +r2, where a1=(r3-r2) / (r1*T2) m , 0≤T1≤T2<2π, r1≤r2<r3, m≥2.

4. The flange according to claim 2, characterized in that: The curved surface (4) is located radially inside the flange skirt (2); the flange skirt (2) has an axis; a plane on which any cross section of the flange skirt (2) is located is a projection plane; the vertical projection of the axis in the projection plane is point O; the vertical projection of the curved surface (4) in the projection plane is a second curved segment (6); the center of a curvature circle corresponding to any point on the second curved segment (6) is located radially inside the flange skirt (2); the outer diameter of the flange skirt (2) is 2r4; the second curved segment (6) has an endpoint A2 and an endpoint B2; the endpoint A2 The distance between the endpoint A2 and the point O is r5, the distance between the endpoint B2 and the point O is r6, the line connecting any point on the second curve segment (6) and the point O is the second target line segment, the line connecting the endpoint A2 and the point O is the third line, the line connecting the endpoint B2 and the point O is the fourth line, the angle formed by the second target line segment and the third line is θ3, the radian corresponding to θ3 is T3, the angle formed by the third line and the fourth line is θ4, the radian corresponding to θ4 is T4, the length of the second target line segment is L2, L2=r6-a2[r4(T4-T3)] m , where a2=(r6-r5) / (r4*T4) m , 0≤T3≤T4<2π, r5<r6≤r4, m≥2.

5. The flange according to claim 1, characterized in that: The height of the flange skirt (2) gradually decreases or increases in the circumferential direction of the flange skirt (2) to form the curved surface (4).

6. The flange according to claim 5, characterized in that: One axial end of the flange skirt (2) is the bottom end of the flange skirt (2), the curved surface (4) faces away from the bottom end of the flange skirt (2), the flange skirt (2) has an axis, the plane where any cross section of the flange skirt (2) is located is a projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface (4) in the projection plane is a first arc-shaped plane, the first arc-shaped plane has a first hypotenuse (7) and a second hypotenuse (8), and the distance between any point on the curved surface (4) and the bottom end of the flange skirt (2) is h 1, the minimum distance between the curved surface (4) and the bottom end of the flange skirt (2) is h2, the maximum distance between the curved surface (4) and the bottom end of the flange skirt (2) is h3, the angle formed between the line connecting any point on the first arc-shaped plane and point O and the second hypotenuse (8) is θ5, the radian corresponding to θ5 is T5, the angle formed between the first hypotenuse (7) and the second hypotenuse (8) is θ6, the radian corresponding to θ6 is T6, half of the sum of the inner diameter and the outer diameter of the flange skirt (2) is 2r7, h1=a3[r7(T6-T5)] m +h2, where a3=(h3-h2) / (r7*T6) m , 0≤T5≤T6<2π, 0≤h2<h3, m≥2.

7. The flange according to claim 5, characterized in that: One axial end of the flange skirt (2) is the bottom end of the flange skirt (2), the curved surface (4) faces the bottom end of the flange skirt (2), the flange skirt (2) has an axis, a plane where any cross section of the flange skirt (2) is located is a projection plane, the vertical projection of the axis in the projection plane is point O, the vertical projection of the curved surface (4) in the projection plane is a second arc-shaped plane, the second arc-shaped plane has a third hypotenuse (9) and a fourth hypotenuse (10), the distance between any point on the curved surface (4) and the bottom end of the flange skirt (2) is h4, The minimum distance between the curved surface (4) and the bottom end of the flange skirt (2) is h5, the maximum distance between the curved surface (4) and the bottom end of the flange skirt (2) is h6, the angle formed between the line connecting any point on the second arc-shaped plane and point O and the third hypotenuse (9) is θ7, the radian corresponding to θ7 is T7, the angle formed between the third hypotenuse (9) and the fourth hypotenuse (10) is θ8, the radian corresponding to θ8 is T8, half of the sum of the inner diameter and the outer diameter of the flange skirt (2) is 2r7, h4=h6-a4[r7(T8-T7)] m , where a4=(h6-h5) / (r7*T8) m , 0≤T7≤T8<2π, 0≤h5<h6, m≥2.

8. The flange according to any one of claims 1 to 7, characterized in that: A damping structure (18) is provided on the curved surface (4), and the damping structure (18) extends to the weakest point of the flange skirt (2) where the curved surface (4) is located.

9. A compressor, characterized in that: Comprising the flange according to any one of claims 1 to 8.

10. An air conditioner, characterized by comprising the compressor according to claim 9.

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