A low-noise motor assembly and compressor

Abstract

The utility model relates to the technical field of compressors, and discloses a low-noise motor component and a compressor, comprising a stator core and a silencer plate, wherein the stator core comprises an upper end face, a lower end face and an outer peripheral side face, the outer peripheral side face connects the upper end face and the lower end face, the silencer plate is enclosed outside the outer peripheral side face, and the silencer plate is in close contact with the outer peripheral side face, a plurality of through holes are provided on the silencer plate, and the plurality of through holes are evenly or unevenly spaced. The utility model has the following technical effects: 1. Consumes sound wave energy, attenuates sound energy, and achieves a better effect of gradually reducing noise; 2. Reduces oil spitting and improves the energy efficiency of the air conditioner body.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a low-noise motor component and a compressor. Background Art

[0002] The compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. It is the heart of the refrigeration system. It sucks low-temperature and low-pressure refrigerant gas from the intake pipe, compresses it by driving the piston through the motor, and then discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0003] The existing compressor includes a shell and a motor assembly and a compression assembly arranged in the shell. The motor generates electromagnetic sound when running, and the pump assembly generates mechanical sound when running. These sounds are transmitted to the outside in the form of sound waves, causing the compressor to have a high noise value and a poor listening experience.

[0004] The existing technology achieves certain noise index optimization by optimizing harmonic interference and preventing modal excitation, but does not attenuate the sound waves of electromagnetic sound and mechanical sound in the shell cavity, and cannot achieve a better noise reduction effect. Utility Model Content

[0005] In order to address the deficiencies of the prior art, the utility model provides a low-noise motor assembly and compressor, which consumes sound wave energy and attenuates sound energy, thereby achieving a better effect of reducing noise and reducing oil discharge, thereby improving the energy efficiency of the air conditioner body.

[0006] The technical purpose to be achieved by the utility model is achieved through the following technical solutions:

[0007] The utility model provides a low-noise motor component, comprising a stator core and a silencer plate;

[0008] The stator core comprises an upper end surface, a lower end surface and an outer peripheral side surface, the outer peripheral side surface connects the upper end surface and the lower end surface, the muffler plate is enclosed outside the outer peripheral side surface, and the muffler plate is in close contact with the outer peripheral side surface;

[0009] The muffler plate is provided with a plurality of through holes, and the plurality of through holes are evenly or unevenly spaced.

[0010] In some implementations, the upper edge of the sound-absorbing plate exceeds the upper end surface, and the lower edge of the sound-absorbing plate exceeds the lower end surface, thereby ensuring consumption of sound wave energy and attenuation of sound energy.

[0011] In some implementations, the height of the upper edge of the muffler plate exceeds the upper end surface portion by more than 2.0 mm, ensuring consumption of sound wave energy and attenuation of sound energy.

[0012] In some implementations, the axial height of the silencer plate is greater than the axial height of the stator core, and the height difference between the two is greater than 3.4 mm, ensuring the consumption of sound wave energy and the attenuation of sound energy.

[0013] In some implementations, the through hole is one of circular, elliptical, semicircular, square and polygonal shapes or a combination of at least two of them, which is adaptable to different production and assembly operation requirements and has the advantage of high versatility.

[0014] In some implementations, the minimum spacing between two adjacent through holes is set to M, and the thickness of the silencer plate is set to N, and M is greater than 0.45N, ensuring the coordination of the thickness of the silencer plate and the spacing between the through holes, thereby achieving a stable assembly effect and a better noise reduction effect.

[0015] In some implementations, the sound-absorbing panel is a single-layer or multi-layer structure, which is combined with the requirements of different assembly and noise reduction scenarios and has the advantage of strong versatility.

[0016] The present application also provides a compressor, comprising a housing and any one of the above-mentioned low-noise motor components;

[0017] The shell is sleeved on the outside of the silencer, and the upper edge of the shell exceeds the upper edge of the silencer, and the lower edge of the shell exceeds the lower edge of the silencer, so that the silencer is completely placed in the compressor cavity, while achieving better noise reduction and improving the energy efficiency of the air conditioner body without affecting the normal operation of the compressor.

[0018] In some implementations, the muffler plate includes a first main body portion and a second main body portion connected to each other, the first main body portion and the second main body portion are both hollow cylindrical structures, and the diameter of the first main body portion is greater than the diameter of the second main body portion;

[0019] The outer peripheral side surface is in close contact with the inner wall of the first main body part, and the shell is sleeved on the outside of the first main body part and the second main body part. The diameters of the first main body part and the second main body part are designed to be different to form a stepped structure, which is more effective in improving oil discharge.

[0020] In some implementations, the first main body portion is in close contact with the shell, and the second main body portion is in close contact with the shell or there is a gap therebetween, which can be designed in conjunction with a conventional shell structure to facilitate production and assembly operations.

[0021] In summary, the utility model has at least the following benefits:

[0022] 1. The low-noise motor assembly provided by the utility model, by providing a silencer hole structure with a through hole, can make electromagnetic sound waves and other sound waves generated by moving parts enter the hole, and then cause friction and viscosity with the hole wall to consume the sound wave energy, so that the sound energy is attenuated, and a better noise reduction effect is achieved.

[0023] 2. When the compressor provided by the utility model is in operation, the refrigeration oil contacts and rubs against the hole wall of the muffler plate, causing the oil mist to condense into oil droplets and return to the lower cavity, thereby reducing oil discharge and improving the energy efficiency of the air conditioner body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the motor assembly of Example 1 of the utility model;

[0025] Figure 2 This is a schematic structural diagram of a stator core of Embodiment 1 of the present utility model;

[0026] Figure 3 A schematic diagram of the structure of a sound-absorbing plate according to Embodiment 2 of the present utility model;

[0027] Figure 4 Another structural schematic diagram of the sound-absorbing plate of Embodiment 2 of the present utility model;

[0028] Figure 5 This is a schematic diagram of the structure of a compressor according to Embodiment 3 of the present utility model;

[0029] Figure 6 A schematic diagram of the structure of a sound-absorbing plate according to Embodiment 3 of the present utility model;

[0030] Figure 7 Another structural schematic diagram of the sound-absorbing plate of Embodiment 3 of the present utility model;

[0031] 100, stator core; 110, upper end surface; 120, lower end surface; 130, outer peripheral side surface;

[0032] 200, sound-absorbing plate; 210, first main body portion; 220, second main body portion;

[0033] 300, through hole;

[0034] 400. Shell. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] See also Figure 1 and Figure 2 A low-noise motor component includes a stator core 100 and a silencer plate 200.

[0039] The stator core 100 is an important part of the motor magnetic circuit, and together with the rotor core and the air gap between the stator and the rotor, forms a complete magnetic circuit of the motor. As can be seen, the stator core 100 is a cylindrical structure, including an upper end face 110, a lower end face 120 and an outer peripheral side face 130.

[0040] Among them, the outer peripheral side surface 130 connects the upper end surface 110 and the lower end surface 120, the silencer plate 200 is enclosed outside the outer peripheral side surface 130, and the silencer plate 200 and the outer peripheral side surface 130 are in close contact, that is, it can be understood that the silencer plate 200 enclosed outside the outer peripheral side surface 130 presents a hollow cylindrical structure, and the curvature of the silencer plate 200 is the same as the curvature of the outer peripheral side surface 130, so that the inner wall of the silencer plate 200 can be in close contact with the outer peripheral side surface 130, and the effect of this close contact can improve the stability of the assembly between the silencer plate 200 and the stator core 100, and achieve a better soundproofing effect.

[0041] It should be noted that the silencer plate 200 and the outer peripheral side surface 130 may be connected by interference fit or laser welding to ensure the assembly stability between the silencer plate 200 and the stator core 100 .

[0042] Specifically, a plurality of through holes 300 are formed on the muffler plate 200 , and the plurality of through holes 300 are evenly or unevenly spaced.

[0043] The through hole 300 passes through the outer wall of the silencer plate 200 to the inner wall of the silencer plate 200. Since the inner wall of the silencer plate 200 is in close contact with the outer peripheral side surface 130, when the motor is running, the electromagnetic sound generated by the motor enters the hole of the through hole 300, and friction and viscosity occur with the hole wall, resulting in sound wave energy consumption and sound energy attenuation. It can be seen that compared with the traditional method of optimizing noise indicators by optimizing harmonic interference to prevent modal excitation, the utility model can achieve a better effect of reducing noise by adding a silencer plate 200 and setting a plurality of through holes 300 on the silencer plate 200.

[0044] The plurality of through holes 300 may be evenly or unevenly spaced on the silencer plate 200. Specifically, the position distribution of the through holes 300 may be adjusted in combination with the structural design of other components on the motor assembly and the structural limitations and operating principles when the motor assembly is assembled with other components of the compressor. This may be reflected in that the plurality of through holes 300 are evenly spaced on the silencer plate 200, or the plurality of through holes 300 are unevenly spaced on the silencer plate 200. Of course, some of the through holes 300 may be evenly spaced and some of the through holes 300 may be unevenly spaced. It is understandable that the number and size of the through holes 300 may be adjusted in combination with actual design and usage requirements, and this embodiment does not impose any limitation thereto.

[0045] Embodiment 2:

[0046] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the motor assembly of the utility model, see Figure 3 and Figure 4 .

[0047] The upper edge of the muffler plate 200 exceeds the upper end surface 110 , and the lower edge of the muffler plate 200 exceeds the lower end surface 120 , thereby ensuring the consumption of sound wave energy and the attenuation of sound energy.

[0048] It can be seen from the content of Example 1 that the stator core 100 is a columnar structure, and the silencer plate 200 is a hollow columnar structure. The silencer plate 200 is enclosed on the outside of the outer peripheral side surface 130, and the end of the silencer plate 200 relative to the upper end surface 110 is an upper edge, and the end of the silencer plate 200 relative to the lower end surface 120 is a lower edge, wherein the upper edge exceeds the upper end surface 110, and the lower edge exceeds the lower end surface 120, so that the entire stator core 100 is completely placed inside the silencer plate 200, so that the electromagnetic sound generated during the operation of the motor can be consumed and attenuated, achieving a better noise reduction effect.

[0049] In some embodiments, the height of the upper edge of the muffler plate 200 exceeding the upper end surface 110 is greater than 2.0 mm, ensuring the consumption of sound wave energy and the attenuation of sound energy.

[0050] In order to cooperate with the original structural design of the motor assembly and the compressor, and to ensure that the silencer 200 can achieve a better noise reduction effect, the height of the upper edge of the silencer 200 exceeding the upper end surface 110 is limited to greater than 2.0 mm, such as 2.1 mm, 2.3 mm and 2.5 mm.

[0051] In some embodiments, the axial height of the silencer plate 200 is greater than the axial height of the stator core 100, and the height difference between the two is greater than 3.4 mm, ensuring the consumption of sound wave energy and the attenuation of sound energy.

[0052] Here, the axial height of the silencer plate 200 is greater than the axial height of the stator core 100 and is limited to be greater than 3.4 mm, such as 3.5 mm, 3.6 mm and 3.7 mm, so that the entire stator core 100 is completely placed inside the silencer plate 200, thereby consuming and attenuating the electromagnetic sound generated during the operation of the motor, achieving a better noise reduction effect.

[0053] In some embodiments, the through hole 300 is one of the shapes of circle, ellipse, semicircle, square and polygon, or a combination of at least two of them, which is suitable for different production and assembly operation requirements and has the advantage of high versatility.

[0054] For example, the plurality of through holes 300 are all circular, or the plurality of through holes 300 are all elliptical, or some of the through holes 300 are semicircular and some of the through holes 300 are square, etc. Figure 3 and Figure 4 The two shapes of the through holes 300 are shown. Of course, the through holes 300 may also be in other shapes besides circular, elliptical, semicircular, square and polygonal, and this embodiment does not make any specific limitation here.

[0055] In some embodiments, the minimum spacing between two adjacent through holes 300 is set to M, and the thickness of the silencer plate 200 is set to N, wherein M is greater than 0.45N, thereby ensuring the coordination of the thickness of the silencer plate 200 and the spacing between the through holes 300, and achieving a stable assembly effect and a better noise reduction effect.

[0056] For example, in one example, the minimum distance between two adjacent through holes 300 is 0.50 mm, and the thickness of the muffler plate 200 is 1.0 mm.

[0057] In some embodiments, the sound-absorbing plate 200 is a single-layer or multi-layer structure, which is combined with the requirements of different assembly and noise reduction scenarios and has the advantage of high versatility.

[0058] Embodiment 3:

[0059] This embodiment provides a compressor based on the above embodiment. Figure 5-Figure 7 .

[0060] A compressor includes a shell 400 and a low-noise motor assembly in any of the above embodiments, wherein the motor assembly includes a stator core 100 and a silencer plate 200, wherein the stator core 100 is a cylindrical structure, including an upper end face 110, a lower end face 120 and an outer peripheral side face 130, wherein the outer peripheral side face 130 connects the upper end face 110 and the lower end face 120, and the silencer plate 200 is enclosed outside the outer peripheral side face 130, and the silencer plate 200 is in close contact with the outer peripheral side face 130.

[0061] The shell 400 is sleeved on the outside of the silencer plate 200, and the upper edge of the shell 400 exceeds the upper edge of the silencer plate 200, and the lower edge of the shell 400 exceeds the lower edge of the silencer plate 200, so that the silencer plate 200 is completely placed in the compressor cavity, while achieving better noise reduction and improving the energy efficiency of the air conditioner body, it will not affect the normal operation of the compressor.

[0062] It is known that in the traditional compressor structure, the shell 400 is in direct contact with the stator core 100 of the motor assembly. In this way, the electromagnetic sound generated when the motor is running will be transmitted to the outside in the form of sound waves, causing the noise value of the compressor to be large and the listening experience to be poor. In this embodiment, a silencer plate 200 is additionally provided between the shell 400 and the stator core 100, and a plurality of through holes 300 are opened on the silencer plate 200, so that the electromagnetic sound waves and the sound waves generated by other moving parts can enter the hole and generate friction and viscosity with the hole wall to consume the sound wave energy, attenuate the sound energy, and achieve a better effect of reducing noise.

[0063] In some embodiments, Figure 6 As shown, the sound-absorbing plate 200 includes a first main body portion 210 and a second main body portion 220 connected to each other. The first main body portion 210 and the second main body portion 220 are both hollow cylindrical structures, and the diameter of the first main body portion 210 is greater than the diameter of the second main body portion 220 .

[0064] The outer peripheral side surface 130 is in close contact with the inner wall of the first main body part 210, and the shell 400 is mounted on the outside of the first main body part 210 and the second main body part 220. The diameters of the first main body part 210 and the second main body part 220 are designed to be different to form a stepped structure, which is more effective in improving oil discharge.

[0065] Specifically, the first main body part 210 is in close contact with the shell 400, and the second main body part 220 is in close contact with the shell 400 or there is a gap, which can be matched with the conventional shell 400 structure design to facilitate production and assembly operations.

[0066] It should be noted that when the first main body part 210, the second main body part 220 and the shell 400 are in close contact, an interference fit connection method or a laser welding connection method can be adopted to ensure the assembly stability between the shell 400 and the silencer plate 200.

[0067] Of course, in some scenarios, the muffler plate 200 may also be designed as a hollow cylindrical structure with the same upper and lower diameters, which is equivalent to the first main body portion 210 and the second main body portion 220 having the same diameters. Figure 7 shown.

[0068] When the compressor provided by the utility model is in operation, the refrigeration oil contacts and rubs against the hole wall of the muffler plate, causing the oil mist to condense into oil droplets and return to the lower cavity, thereby reducing oil discharge and improving the energy efficiency of the air conditioner body.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0071] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0072] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A low-noise motor assembly, characterized in that: It comprises a stator core (100) and a muffler plate (200); The stator core (100) comprises an upper end surface (110), a lower end surface (120) and an outer peripheral side surface (130), the outer peripheral side surface (130) connecting the upper end surface (110) and the lower end surface (120), the muffler plate (200) encloses the outside of the outer peripheral side surface (130), and the muffler plate (200) is in close contact with the outer peripheral side surface (130); The muffler plate (200) is provided with a plurality of through holes (300), and the plurality of through holes (300) are evenly or unevenly spaced.

2. The low-noise motor assembly according to claim 1, characterized in that: The upper edge of the sound-absorbing plate (200) exceeds the upper end surface (110), and the lower edge of the sound-absorbing plate (200) exceeds the lower end surface (120).

3. The low-noise motor assembly according to claim 2, characterized in that: The height of the portion where the upper edge of the muffler plate (200) exceeds the upper end surface (110) is greater than 2.0 mm.

4. The low-noise motor assembly according to claim 1, characterized in that: The height of the silencer plate (200) distributed along the axial direction is greater than the height of the stator core (100) distributed along the axial direction, and the height difference between the two is greater than 3.4 mm.

5. The low-noise motor assembly according to claim 1, characterized in that: The through hole (300) is in the shape of one of a circle, an ellipse, a semicircle, a square and a polygon, or a combination of at least two of them.

6. The low-noise motor assembly according to claim 1, characterized in that: Assuming that the minimum spacing between two adjacent through holes (300) is M, and the thickness of the muffler plate (200) is N, M is greater than 0.45N.

7. The low-noise motor assembly according to claim 1, characterized in that: The sound-absorbing plate (200) is a single-layer or multi-layer structure.

8. A compressor, characterized in that: A low-noise motor assembly comprising a housing (400) and any one of claims 1 to 7; The shell (400) is sleeved on the outside of the sound-absorbing plate (200), and the upper edge of the shell (400) exceeds the upper edge of the sound-absorbing plate (200), and the lower edge of the shell (400) exceeds the lower edge of the sound-absorbing plate (200).

9. The compressor according to claim 8, characterized in that The muffler plate (200) comprises a first main body portion (210) and a second main body portion (220) connected to each other, the first main body portion (210) and the second main body portion (220) are both hollow cylindrical structures, and the diameter of the first main body portion (210) is greater than the diameter of the second main body portion (220); The outer peripheral side surface (130) is in close contact with the inner wall of the first main body part (210), and the shell (400) is sleeved on the outside of the first main body part (210) and the second main body part (220).

10. The compressor according to claim 9, characterized in that The first main body part (210) is in close contact with the shell (400), and the second main body part (220) is in close contact with the shell (400) or there is a gap therebetween.

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