Silencing framework and stator assembly

Abstract

The utility model relates to the technical field of compressors, and discloses a noise reduction framework and a stator assembly, the noise reduction framework comprises a first connecting piece, a second connecting piece and a plurality of noise reduction columns, the number of the noise reduction columns is the same as the number of stator grooves, the noise reduction columns are respectively distributed corresponding to the notch positions of the stator grooves, and the noise reduction columns are connected with the first connecting piece. The first connecting piece is connected with the first ends of the silencing columns, the second connecting piece is connected with the second ends of the silencing columns, and the silencing columns are used for being embedded into notches of stator grooves; the motor has the following technical effects: 1, vibration between stator teeth is subjected to energy absorption and conversion, and the influence of circumferential electromagnetic force and part of radial electromagnetic force coupled through a structure is reduced; vibration between adjacent stator teeth is offset and weakened, generated noise is reduced, and the purpose of noise reduction is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a silencer frame and a stator assembly. Background Art

[0002] A rotary compressor is a compressor that compresses and transports gas by changing the working volume through the rotational motion of the rotor in the cylinder. It has the characteristics of small size and uniform exhaust. Because the position of the cylinder working volume is movable, the design does not require a valve, and it has the advantage of a simple structure. However, like other types of compressors, rotary compressors also have the disadvantage of being noisy.

[0003] At present, the stator teeth of conventional vertical rotary compressor motors are directly affected by electromagnetic force, which produces periodic vibration and certain noise. In addition, the stator slots are open slots, which makes the torque of the stator slots larger, causing the stator teeth to be the main source of electromagnetic noise in the motor. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the utility model provides a silencer frame and a stator assembly, which realizes energy absorption and conversion of vibrations between stator teeth, reduces the influence of circumferential electromagnetic force and part of the radial electromagnetic force coupled by the structure, and makes the vibrations between adjacent stator teeth offset and weaken each other, thereby reducing the noise generated and achieving the purpose of silencer.

[0005] The technical purpose to be achieved by the utility model is achieved through the following technical solutions:

[0006] The utility model provides a sound-absorbing frame, which comprises a first connecting member, a second connecting member and a plurality of sound-absorbing columns;

[0007] The number of the silencer columns is the same as the number of the stator slots, and the silencer columns are respectively distributed corresponding to the slot positions of the stator slots, the first connecting member is connected to the first end of each silencer column, and the second connecting member is connected to the second end of each silencer column;

[0008] The silencer column is used to be embedded in the notch of the stator slot.

[0009] In some implementations, the first connecting member and each of the silencer columns are an integrally formed structure, and the second connecting member and each of the silencer columns are detachably connected.

[0010] In some implementations, a connecting portion is formed on the second end of the silencer column, and a connecting port is formed on the second connecting member at a position corresponding to each of the connecting portions.

[0011] In some implementations, the connection port includes a straight section and a flared section connected along its penetration direction;

[0012] The connecting portion comprises a first connecting piece and a second connecting piece which are arranged at intervals, a first protrusion is formed at an end of the first connecting piece, and a second protrusion is formed at an end of the second connecting piece;

[0013] After the first connecting piece and the second connecting piece pass through the straight section, the first protrusion and the second protrusion abut against the inner wall of the expanded section.

[0014] In some implementations, the first connecting member and the second connecting member are annular structures or polygonal structures.

[0015] In some implementations, the cross-section of the muffler column is polygonal, circular, semicircular, or elliptical.

[0016] In some implementations, the second connecting member is an annular structure, and the inner diameter of the second connecting member is assumed to be M, and the width of the silencer column distributed along the circumference of the second connecting member is assumed to be N, and 0.025M≤N≤0.2M.

[0017] In some implementations, the sound-absorbing frame is made of resin material.

[0018] The utility model also provides a stator assembly, comprising a stator core and a silencer frame as described in any one of the above items, wherein the stator core comprises a plurality of stator teeth distributed in a ring, a stator slot is defined between two adjacent stator teeth, the silencer column is embedded in the notch of the stator slot, and the first connecting member and the second connecting member are respectively abutted against the upper end and the lower end of the stator core.

[0019] In some implementations, it also includes an upper bracket and a lower bracket, the upper bracket is connected to the upper end of the stator core, the lower bracket is connected to the lower end of the stator core, the first connecting member abuts the lower end of the lower bracket, and the second connecting member abuts the upper end of the upper bracket.

[0020] In summary, the utility model has at least the following benefits:

[0021] 1. The silencer frame provided by the utility model is provided with a silencer column, which is embedded in the notch of the stator slot, so as to absorb and convert the energy of the vibration between the stator teeth, reduce the influence of the circumferential electromagnetic force and part of the radial electromagnetic force coupled by the structure, and make the vibration between adjacent stator teeth offset and weaken each other, reduce the noise generated, and achieve the purpose of silencer.

[0022] 2. The stator assembly provided by the utility model uses a silencer frame to effectively weaken the vibration between the stator teeth and reduce the noise during the operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the sound-absorbing frame of Example 1 of the utility model;

[0024] Figure 2 This is a schematic structural diagram of a muffler column according to Embodiment 2 of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of the connecting portion of Embodiment 2 of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of a second connecting member of Embodiment 2 of the present utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the connection port of Example 2 of the utility model;

[0028] Figure 6 This is a schematic structural diagram of a stator assembly according to Embodiment 3 of the present utility model;

[0029] Figure 7 This is a schematic structural diagram of a stator core of Embodiment 3 of the present utility model;

[0030] 100. a first connecting member;

[0031] 200, second connecting member; 210, connecting port; 211, straight section; 212, expanded section;

[0032] 300, muffler column; 310, connecting portion; 311, first connecting piece; 312, second connecting piece; 313, first protrusion; 314, second protrusion;

[0033] 400, stator core; 410, stator teeth; 420, stator slots;

[0034] 500, upper bracket;

[0035] 600, lower bracket. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] Embodiment 1:

[0039] See also Figure 1 , a silencer skeleton, is used in the stator assembly of the compressor to absorb and convert the energy of the vibration between the stator teeth and play a role in offsetting and weakening each other.

[0040] The silencer frame includes a first connecting member 100, a second connecting member 200 and a plurality of silencer columns 300. The number of silencer columns 300 is the same as the number of stator slots. It is known that in the compressor, the stator core includes a plurality of stator teeth distributed in an annular manner, and a stator slot is defined between two adjacent stator teeth. For example, the stator core includes 12 stator teeth distributed in an annular manner. Since the 12 stator teeth are designed to be distributed in an annular manner, the 12 stator teeth define a total of 12 stator slots, that is, the number of silencer columns 300 is 12. Each silencer column 300 corresponds to the slot position distribution of each stator slot. It is understandable that the distribution mode between each silencer column 300 is the same as the annular distribution mode of each stator slot, and each silencer column 300 corresponds to the position of a stator slot. Specifically, each silencer column 300 corresponds to the slot position of each stator slot, and each silencer column 300 is used to be embedded in the slot of each stator slot.

[0041] During the operation of the compressor, the stator teeth are directly affected by the electromagnetic force and will produce periodic vibrations. The notches of the stator slots are open slots, which makes the torque of the stator slots larger, causing the stator teeth to be the main source of electromagnetic noise of the motor. Therefore, in this embodiment, each silencer column 300 is respectively embedded in the notch of each stator slot to absorb and convert the energy generated by the vibration of the stator teeth.

[0042] The first connecting member 100 is connected to the first end of each silencer column 300 , and the second connecting member 200 is connected to the second end of each silencer column 300 .

[0043] For example, the silencer column 300 is a column structure, including a first end and a second end extending in opposite directions. A first connecting member 100 is provided to be connected to the first end of each silencer column 300, and a second connecting member 200 is provided to be connected to the second end of each silencer column 300, so that the position of each silencer column 300 is fixed to form an integral structure, which is convenient for embedding and installing the silencer frame, thereby improving the convenience of operation and the stability of assembly.

[0044] In some embodiments, the first connecting member 100 and each silencer column 300 are an integrally formed structure, and the second connecting member 200 and each silencer column 300 are detachably connected.

[0045] For example, when the silencer frame is injection molded, the first connecting member 100 and each silencer column 300 can be an integrally molded structure, and this part serves as the first part of the silencer frame, and the second connecting member 200 is injection molded separately, and this part serves as the second part of the silencer frame. The purpose of doing so is that when the silencer frame is assembled with the stator core, the first part can be assembled with the stator core first, and then the second part can be connected with the first part after each silencer column 300 is respectively embedded in the notch of the corresponding stator slot, so as to fix the position of each silencer column 300 and improve the installation stability of the silencer frame.

[0046] The silencer frame provided by the utility model is provided with a silencer column 300, so that the silencer column 300 is embedded in the notch of the stator slot, so as to absorb and convert the energy of the vibration between the stator teeth, reduce the influence of the circumferential electromagnetic force and part of the radial electromagnetic force coupled by the structure, and make the vibrations between adjacent stator teeth offset and weaken each other, reduce the generated noise, and achieve the purpose of silencer.

[0047] Embodiment 2:

[0048] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the muffler frame of the utility model, see Figure 2-Figure 5 .

[0049] A connecting portion 310 is formed on the second end of the silencer column 300, and a connecting port 210 is opened on the second connecting member 200 at a position corresponding to each connecting portion 310. The connecting portion 310 is inserted and engaged in the connecting port 210, so that each silencer column 300 is connected to the second connecting member 200, which limits and fixes the position of the silencer column 300.

[0050] Specifically, the connecting port 210 includes a straight section 211 and a flared section 212 connected to each other along its penetration direction, that is, the caliber of the flared section 212 is larger than the caliber of the straight section 211; the connecting portion 310 includes a first connecting piece 311 and a second connecting piece 312 arranged at intervals, and a first protrusion 313 is formed at the end of the first connecting piece 311, and a second protrusion 314 is formed at the end of the second connecting piece 312; after the first connecting piece 311 and the second connecting piece 312 pass through the straight section 211, the first protrusion 313 and the second protrusion 314 abut against the inner wall of the flared section 212.

[0051] The first connecting piece 311 and the second connecting piece 312 are arranged at intervals, so that when the first connecting piece 311 and the second connecting piece 312 pass through the straight section 211, they are limited by the caliber size of the straight section 211, so that the first connecting piece 311 and the second connecting piece 312 are both contracted toward the interval. After the first connecting piece 311 and the second connecting piece 312 pass through the straight section 211, their ends are first located at the expanded section 212. At this time, since the caliber size of the expanded section 212 is larger than the caliber size of the straight section 211, the first protrusion 313 and the second protrusion 314 are affected by the restoring effect of the first connecting piece 311 and the second connecting piece 312, and abut against the inner wall of the expanded section 212, thereby realizing the detachable connection between the silencer column 300 and the second connecting piece 200.

[0052] In some embodiments, the first connecting member 100 and the second connecting member 200 are annular structures or polygonal structures.

[0053] In order to match the structure of the stator core, each silencer column 300 corresponds to the slot position of each stator slot. Therefore, each silencer column 300 is distributed in a ring-shaped manner. In this way, a first connecting member 100 and a second connecting member 200 with a ring structure or a polygonal structure are provided to facilitate connection with each silencer column 300, thereby improving the convenience of production and assembly.

[0054] In some embodiments, the cross-section of the muffler column 300 is polygonal, circular, semicircular, or elliptical.

[0055] The silencer column 300 is used to be embedded in the notch of the stator slot. Therefore, the structural design of the silencer column 300 only needs to meet the requirement that it can be embedded in the notch of the stator slot. Therefore, the cross-section of the silencer column 300 can be other shapes besides polygonal, circular, semicircular or elliptical. The specific shape can be adjusted according to actual needs and is not limited here.

[0056] In some embodiments, the second connecting member 200 is an annular structure, the inner diameter of the second connecting member 200 is M, and the width of the silencer column 300 distributed along the circumference of the second connecting member 200 is N, wherein 0.025M≤N≤0.2M.

[0057] For example, the width of the silencer column 300 along the circumferential direction of the second connecting member 200 is 3 mm, and the inner diameter of the second connecting member is 50 mm. Restricting the relationship between the inner diameter of the second connecting member 200 and the width of the silencer column 300 along the circumferential direction of the second connecting member 200 can ensure the connection stability between the second connecting member 200 and each silencer column 300, as well as the overall structural stability of the silencer skeleton, thereby improving its stability in use.

[0058] In some embodiments, the sound-absorbing frame is made of resin material.

[0059] The resin material has certain flexibility and elasticity, and can absorb and convert the energy generated by the stator teeth, reduce the influence of the circumferential electromagnetic force and part of the radial electromagnetic force coupled by the structure, and make the vibrations between adjacent stator teeth offset and weaken each other, thereby reducing the noise generated and achieving the purpose of silencing.

[0060] Embodiment 3:

[0061] This embodiment provides a stator assembly based on the above embodiment. Figure 6 and Figure 7 .

[0062] A stator assembly includes a stator core 400 and a silencer frame in any of the above embodiments, the stator core 400 includes a plurality of stator teeth 410 distributed in an annular manner, a stator slot 420 is defined between two adjacent stator teeth 410, a silencer column 300 is embedded in the notch of the stator slot 420, and a first connecting member 100 and a second connecting member 200 are respectively abutted against the upper end and the lower end of the stator core 400.

[0063] For example, the stator core 400 includes 12 stator teeth 410 distributed in an annular manner. Since the 12 stator teeth 410 are designed to be distributed in an annular manner, the 12 stator teeth 410 define a total of 12 stator slots 420, that is, the number of the silencer columns 300 is 12. Each silencer column 300 corresponds to the slot position distribution of each stator slot 420. It can be understood that the distribution method between each silencer column 300 is the same as the annular distribution method of each stator slot 420, and each silencer column 300 corresponds to the position of a stator slot 420. Specifically, each silencer column 300 corresponds to the slot position of each stator slot 420, and each silencer column 300 is used to be embedded in the slot of each stator slot 420.

[0064] During the operation of the compressor, the stator teeth 410 are directly affected by the electromagnetic force and will produce periodic vibrations. The notches of the stator slots 420 are open slots, which makes the torque of the stator slots 420 larger, causing the stator teeth 410 to be the main source of electromagnetic noise generated by the motor. Therefore, in this embodiment, each silencer column 300 is respectively embedded in the notch of each stator slot 420 to absorb and convert the energy generated by the vibration of the stator teeth 410, and the first connecting member 100 and the second connecting member 200 are respectively abutted against the upper and lower ends of the stator core 400 to support and limit the silencer frame, while also improving the assembly stability of the silencer frame.

[0065] In some embodiments, the stator assembly further includes an upper bracket 500 and a lower bracket 600, the upper bracket 500 is connected to the upper end of the stator core 400, and the lower bracket 600 is connected to the lower end of the stator core 400, wherein the first connecting member 100 abuts against the lower end of the lower bracket 600, and the second connecting member 200 abuts against the upper end of the upper bracket 500.

[0066] It is known that the stator core 400 is usually matched with an upper bracket 500 and a lower bracket 600. In this way, in order to match different assembly requirements, after the upper bracket 500 and the lower bracket 600 are respectively assembled with the stator core 400, the first connecting member 100 is abutted against the lower end of the lower bracket 600, and the second connecting member 200 is abutted against the upper end of the upper bracket 500.

[0067] The stator assembly of the utility model adopts a silencer frame, which effectively weakens the vibration between the stator teeth and reduces the noise when the compressor is running.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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 sound-absorbing frame, characterized in that: The noise-absorbing frame comprises a first connecting member (100), a second connecting member (200) and a plurality of noise-absorbing columns (300); The number of the silencer columns (300) is the same as the number of the stator slots, and each of the silencer columns (300) corresponds to the slot position distribution of each of the stator slots, the first connecting member (100) is connected to the first end of each of the silencer columns (300), and the second connecting member (200) is connected to the second end of each of the silencer columns (300); The muffler column (300) is used to be embedded in the slot opening of the stator slot.

2. The sound-absorbing frame according to claim 1, characterized in that: The first connecting member (100) and each of the silencer columns (300) are an integrally formed structure, and the second connecting member (200) and each of the silencer columns (300) are detachably connected.

3. The sound-absorbing frame according to claim 2, characterized in that: A connecting portion (310) is formed on the second end of the muffler column (300), and a connecting port (210) is formed on the second connecting member (200) at a position corresponding to each of the connecting portions (310).

4. The sound-absorbing frame according to claim 3, characterized in that: The connecting port (210) comprises a straight opening section (211) and a flared opening section (212) connected to each other along its penetration direction; The connecting portion (310) comprises a first connecting piece (311) and a second connecting piece (312) which are arranged at intervals, a first protrusion (313) being formed at the end of the first connecting piece (311), and a second protrusion (314) being formed at the end of the second connecting piece (312); After the first connecting piece (311) and the second connecting piece (312) pass through the straight section (211), the first protrusion (313) and the second protrusion (314) abut against the inner wall of the expanded section (212).

5. The sound-absorbing frame according to claim 1, characterized in that: The first connecting member (100) and the second connecting member (200) are annular structures or polygonal structures.

6. The sound-absorbing frame according to claim 1, characterized in that: The cross section of the muffler column (300) is polygonal, circular, semicircular or elliptical.

7. The sound-absorbing frame according to claim 1, characterized in that: The second connecting member (200) is an annular structure. The inner diameter of the second connecting member (200) is assumed to be M. The width of the silencer column (300) distributed along the circumference of the second connecting member (200) is assumed to be N. 0.025M≤N≤0.2M.

8. The sound-absorbing frame according to any one of claims 1 to 7, characterized in that: The noise-absorbing frame is made of resin material.

9. A stator assembly, characterized in that: It comprises a stator core (400) and a sound-absorbing skeleton as claimed in any one of claims 1 to 8; The stator core (400) comprises a plurality of stator teeth (410) distributed in an annular manner, a stator slot (420) is defined between two adjacent stator teeth (410), the silencer column (300) is embedded in a notch of the stator slot (420), and the first connecting member (100) and the second connecting member (200) are respectively abutted against the upper end and the lower end of the stator core (400).

10. The stator assembly according to claim 9, characterized in that The stator core (400) further comprises an upper bracket (500) and a lower bracket (600), wherein the upper bracket (500) is connected to the upper end of the stator core (400), and the lower bracket (600) is connected to the lower end of the stator core (400), the first connecting member (100) abuts against the lower end of the lower bracket (600), and the second connecting member (200) abuts against the upper end of the upper bracket (500).

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