Cylinder structure and compressor

Abstract

The application provides a cylinder structure and a compressor, which comprise a cylinder, the cylinder comprising a compression cavity and an air inlet channel in communication with the compression cavity, one end of the air inlet channel being in communication with the compression cavity, and the other end of the air inlet channel being in communication with the outside of the cylinder; and a sound elimination cavity in communication with the air inlet channel, so that fluid in the air inlet channel enters the sound elimination cavity, thereby eliminating noise caused by the fluid; wherein the volume of the sound elimination cavity is adjustably arranged. The cylinder structure and the compressor solve the technical problem of poor sound elimination effect of the compressor in the prior art.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, specifically to a cylinder block structure and a compressor. Background Technology

[0002] Rotary compressors and scroll compressors are widely used as compression mechanisms in air conditioners due to their advantages such as simple structure, small size, excellent performance, high stability, and few reciprocating moving parts. However, compressor noise has always been a major and difficult problem affecting the development and promotion of compressors.

[0003] The compressor's suction structure is formed by a sealed connection between the pump body's suction port and the distributor's bend, allowing refrigerant to enter the pump body through the distributor. However, due to the intermittent nature of the compressor's suction process and the refrigerant backflow in the high-pressure chamber, significant pressure pulsations occur in the low-pressure chamber of the cylinder and in the distributor. These pressure pulsations radiate noise through the distributor, affecting the compressor's noise characteristics. Furthermore, the suction pressure pulsations increase the compressor's power consumption, impacting its performance.

[0004] Although existing compressors have noise reduction structures, the noise reduction structures cannot meet the noise reduction requirements of compressors under different conditions due to the complex operating conditions inside the compressor.

[0005] Therefore, existing technologies need further development. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a cylinder structure and compressor to solve the technical problem of poor noise reduction effect of compressors in related technologies.

[0007] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: a cylinder structure is provided, comprising: a cylinder body, the cylinder body including a compression chamber and an intake passage communicating with the compression chamber, one end of the intake passage communicating with the compression chamber, and the other end of the intake passage communicating with the outside of the cylinder body; a silencing chamber, the silencing chamber communicating with the intake passage, so that the fluid in the intake passage enters the silencing chamber, thereby eliminating the noise caused by the fluid; wherein, the volume of the silencing chamber is adjustable.

[0008] Furthermore, the muffler cavity includes: a connecting cavity that communicates with the intake passage; a resonance cavity that extends through the cylinder body in a direction parallel to the extension direction of the compression cavity; a mounting cavity that has one end connected to the resonance cavity and the other end connected to the outside of the cylinder body; and a sealing component that is disposed inside the mounting cavity to seal the mounting cavity.

[0009] Furthermore, the sealing assembly includes an adjustment component movably disposed within the mounting cavity to fill the mounting cavity and / or resonant cavity.

[0010] Furthermore, the sealing assembly includes: a mounting base, which is sealed within the mounting cavity; an adjusting member movably disposed through the mounting base; the adjusting member having a first pushing portion located within the silencing cavity and a second pushing portion located outside the silencing cavity.

[0011] Furthermore, the mounting base is provided with a mounting groove; an elastic element is provided in the mounting groove, one end of the elastic element abuts against the mounting base, and the other end of the elastic element is connected to the adjustment component.

[0012] Furthermore, the adjusting component includes: a connector that abuts against the side wall of the mounting cavity; a first pushing part disposed on the connector; the first pushing part includes a first force-bearing surface and a second force-bearing surface connected to each other; a preset angle exists between the first force-bearing surface and the second force-bearing surface; the preset angle ranges from 90° to 180°; and a connecting rod connected to the connector, the connecting rod passing through the mounting base; and a second pushing part located on the side of the connecting rod away from the connector.

[0013] Furthermore, the resonant cavity is a circular through hole; the resonant cavity is provided with internal threads for connecting fasteners.

[0014] Furthermore, the cylinder body includes a cylinder body wall surrounding the compression chamber, and a connecting cavity is provided on the cylinder body wall. The connecting cavity penetrates the cylinder body wall and communicates with the muffler chamber.

[0015] Furthermore, there are at least two silencing cavities, which are arranged alternately on the cylinder wall.

[0016] A compressor includes: a housing having a receiving cavity, the receiving cavity having a cylinder structure as described above; a motor assembly disposed within the receiving cavity, the motor assembly including a rotatably disposed rotor; and a crankshaft assembly connected to the rotor, the crankshaft assembly being disposed within a compression cavity to compress fluid within the compression cavity.

[0017] Beneficial effects:

[0018] 1. The cylinder block structure of the present invention and the resonant cavity structure can reduce the intake noise of the cylinder.

[0019] 2. The cylinder structure of the present invention, with its resonant cavity structure, can reduce intake pressure pulsation, improve the intake side temperature field, reduce the intake side cylinder wall temperature, and increase intake volume.

[0020] 3. The compressor using the present invention has a noise reduction chamber that reduces compressor noise, and a resonant cavity structure that increases air intake, improves compressor performance, enhances user comfort, and facilitates widespread adoption. Attached Figure Description

[0021] Figure 1This is a cross-sectional view of the cylinder block structure used in the first embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0023] Figure 3 This is a cross-sectional view of the adjusting component of the cylinder structure used in an embodiment of the present invention;

[0024] Figure 4 This is a structural cross-sectional view of the sealing assembly of the cylinder structure used in an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the cylinder structure used in the second embodiment of the present invention;

[0026] Figure 6 This is a cross-sectional view (AA) of the cylinder block structure used in the third embodiment of the present invention;

[0027] Figure 7 This is a BB cross-sectional view of the cylinder structure used in the third embodiment of the present invention;

[0028] Figure 8 This is a cross-sectional view of the compressor used in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the internal structure of the compressor used in an embodiment of the present invention.

[0030] The above figures include the following reference numerals:

[0031] 1. Cylinder block; 12. Compression chamber; 2. Receiving chamber; 3. Motor assembly; 4. Housing; 5. Sealing assembly; 51. Adjusting component; 511. Connector; 512. Connecting rod; 52. Elastic element; 53. Mounting seat; 54. Mounting groove; 55. First pushing part; 551. First force-bearing surface; 552. Second force-bearing surface; 56. Second pushing part; 6. Cylinder wall; 7. Intake passage; 8. Connecting chamber; 81. Mounting chamber; 9. Resonance chamber; 10. Rotor; 11. Crankshaft assembly; 20. Silencing chamber; 13. Dispenser; 14. Connecting chamber; 15. Connecting hole. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] According to an embodiment of the present invention, a cylinder block structure is provided; please refer to [link / reference]. Figures 1 to 9 The system includes: a cylinder body 1, which includes a compression chamber 12 and an intake passage 7 communicating with the compression chamber 12. One end of the intake passage 7 is connected to the compression chamber 12, and the other end of the intake passage 7 is connected to the outside of the cylinder body 1; a muffler 20, which is connected to the intake passage 7 so that the fluid in the intake passage 7 enters the muffler 20 to eliminate the noise caused by the fluid; wherein the volume of the muffler 20 is adjustable.

[0034] In this embodiment, the cylinder structure includes a compression chamber 12 within the cylinder 1, which is connected to the intake channel 7. A silencer chamber 20, also connected to the intake channel 7, is also provided within the cylinder 1. Fluid enters the silencer chamber 20 through the intake channel 7. The volume of the silencer chamber 20 is adjustable to reduce fluid noise entering the chamber. When noise vibrates within a small region at low frequencies, friction and damping occur on the walls, creating a certain acoustic impedance. The friction and damping between the cylinder 1 and the compression chamber 12 and silencer chamber 20 further convert some of the sound energy into heat energy, achieving a noise reduction effect. The adjustable volume of the silencer chamber 20 in this embodiment allows for adaptive settings to accommodate different noise frequencies, effectively reducing intake noise and solving the technical problem of poor cylinder noise reduction in the prior art.

[0035] See Figure 1 and Figure 2 In the cylinder structure of this embodiment, the muffler 20 includes: a communicating cavity 8, which communicates with the intake channel 7; a resonant cavity 9, which extends through the cylinder 1 in a direction parallel to the extension direction of the compression cavity 12; and a mounting cavity 81, one end of which communicates with the resonant cavity 9, and the other end of which communicates with the outside of the cylinder 1. A sealing component 5 is disposed inside the mounting cavity 81 to seal it. The sealing component 5 is disposed on the cylinder 1, and the communicating cavity 8, the resonant cavity 9, and the mounting cavity 81 are also provided on the cylinder 1. The screw cavity formed by the screws of the cylinder 1 is the resonant cavity 9, which communicates with the intake channel 7. A communicating cavity 8 is provided between the resonant cavity 9 and the intake channel 7. The mounting cavity 81 communicates with the resonant cavity 9, and the sealing component 5 is installed at the end of the mounting cavity 81.

[0036] The wavelength of the noise is much larger than that of the cavity formed by the connecting cavity 8, resonant cavity 9, and sealing component 5. In the lower frequency region, each part of the air belongs to a very small region within the wavelength λ. The resonant cavity 9 and the fluid in the adjacent cavity move as a whole like a piston, possessing a certain acoustic mass. When the fluid vibrates within the cavity, friction and damping occur on the walls. The fluid in the sealed cavity acts like an air spring, possessing a certain acoustic compliance. When the sound wave is incident on the connecting cavity 8, some of the sound wave is reflected back due to impedance mismatch, preventing some sound energy from continuing to propagate forward. On the other hand, the friction and damping effect of the cavity in cylinder 1 converts some sound energy into heat energy for dissipation, achieving a noise reduction effect.

[0037] Specifically, the resonant frequency:

[0038] Where: sound mass voice and appearance

[0039] The volume of resonant cavity 9 is V b ,

[0040] The length of the connecting cavity 8 is I b ,

[0041] The cross-sectional area S of the connecting cavity 8 b .

[0042] See Figure 2 In the cylinder structure of this embodiment, the sealing assembly 5 includes an adjusting component 51, which is movably disposed within the mounting cavity 81 to fill the mounting cavity 81 and / or the resonant cavity 9. The cylinder structure is located in the low-pressure side intake channel 7 and the high-pressure side silencer cavity 20, respectively. By setting different pressure differences on both sides and opening or closing conditions, the movement direction of the adjusting component 51 within the mounting cavity 81 is adjusted to fill the mounting cavity 81 and the resonant cavity 9. The change in the volume of the mounting cavity 81 and the resonant cavity 9 thereby changes the silencer frequency.

[0043] See Figure 3 In the cylinder block structure of this embodiment, the sealing assembly 5 includes: a mounting base 53, which is sealed within the mounting cavity 81; an adjusting member 51 movably passing through the mounting base 53; the adjusting member 51 has a first pushing part 55 located within the muffler cavity 20 and a second pushing part 56 located outside the muffler cavity 20. The adjusting member 51 is movable within the muffler cavity 20 through the mounting base 53. When the pressure difference between the intake passage 7 and the two sides of the muffler cavity 20 is different, the first pushing part 55 drives the adjusting member 51 to move into the muffler cavity 20, or the second pushing part 56 drives the adjusting member 51 to move outward, thereby changing the volume of the muffler cavity 20.

[0044] See Figure 4In the cylinder structure of this embodiment, a mounting groove 54 is provided on the mounting base 53; an elastic member 52 is provided in the mounting groove 54, one end of the elastic member 52 abuts against the mounting base 53, and the other end of the elastic member 52 is connected to the adjusting component 51. The elastic member 52 is disposed in the mounting groove, one end abuts against the mounting base 53, and the other end is connected to the adjusting component 51.

[0045] Specifically, the elastic element 52 is a compression spring. The pressure of the intake channel 7 on the adjusting component 51 plus the spring force is higher than the pressure of the high pressure inside the cylinder 1 on the adjusting component 51. The adjusting component 51 is displaced, changing the volume of the muffler cavity 20.

[0046] See Figure 4 In the cylinder structure of this embodiment, the adjusting component 51 includes: a connector 511, which abuts against the side wall of the mounting cavity 81; a first pushing part 55 disposed on the connector 511, the first pushing part 55 including a first force-bearing surface 551 and a second force-bearing surface 552 connected to each other, with a preset angle between the first force-bearing surface 551 and the second force-bearing surface 552, the preset angle ranging from 90° to 180°; a connecting rod 512 connected to the connector 511, the connecting rod 512 passing through the mounting base 53; and a second pushing part 56 located on the side of the connecting rod 512 away from the connector 511. The pressure difference on both sides of the adjusting component 51 can be adjusted to control the force-bearing area of ​​the two parts of the adjusting component 51. Therefore, the first pushing part 55 is provided with a first force-bearing surface 551 and a second force-bearing surface 552. There is a preset angle of 90° to 180° between the first force-bearing surface 551 and the second force-bearing surface 552, forming a pointed structure, which reduces air resistance when the first pushing part 55 moves into the silencing cavity 20; the second pushing part 56 is located at the tail end of the connecting rod 512 and has a slender columnar structure, which can reduce the force-bearing area of ​​the second pushing part 56 and reduce the weight of the entire adjusting component 51, making the adjusting component 51 move more sensitively.

[0047] See Figure 5 In the cylinder structure of this embodiment, the resonance cavity 9 is a circular through hole; the resonance cavity 9 is provided with an internal thread for connecting fasteners. By making full use of the space inside the compression cavity 12, the circular cavity formed by the internal thread of the fasteners inside the cylinder 1 is configured as the resonance cavity 9.

[0048] See Figure 5In the cylinder structure of this embodiment, the cylinder 1 includes a cylinder wall 6 surrounding the compression chamber 12. A connecting cavity 14 is provided on the cylinder wall 6, penetrating the cylinder wall 6 and communicating with the muffler chamber 20. The connecting cavity 14, formed on the cylinder wall 6, intersects with the resonant cavity 9, expanding the volume of the muffler chamber 20. Simultaneously, a larger muffler chamber 20 can accommodate more low-temperature refrigerant, which to some extent reduces the temperature of the outer wall of the intake passage 7, alters the cylinder temperature field, reduces the impact of heat conduction from the external high-temperature oil bath on the intake, reduces pressure pulsation, and improves compressor performance.

[0049] See Figure 6 and Figure 7 In the cylinder block structure of this embodiment, there are at least two muffler cavities 20, which are spaced apart on the cylinder block wall 6. With two or more muffler cavities 20, the connecting cavities 14 are correspondingly arranged one-to-one. Multiple connecting cavities 14 are connected in series through the cavities of the screw holes. The connecting cavities 14 are interconnected through multiple connecting holes 15, which can accommodate more low-temperature refrigerant, further reducing the impact of heat conduction from the external high-temperature oil bath on the intake passage 7 and improving intake efficiency.

[0050] See Figure 8 and Figure 9 The compressor in this embodiment includes: a housing 4, the housing 4 having a receiving cavity 2, and a cylinder structure as described above disposed within the receiving cavity 2; a motor assembly 3 disposed within the receiving cavity 2, the motor assembly 3 including a rotatably disposed rotor 10; and a crankshaft assembly 11 connected to the rotor 10, the crankshaft assembly 11 disposed within a compression chamber 12 to compress the fluid within the compression chamber 12. The housing 4 of the compressor has a receiving cavity 2, and the receiving cavity 2 is provided with the cylinder structure and motor assembly 3 as described above. The crankshaft assembly 11 compresses the fluid entering the compression chamber 12. During operation, the compressor of this embodiment connects the crankshaft assembly 11 to the rotor 10, and the rotor 10 distributes the load across the entire crankshaft assembly 11 through rolling friction, thereby reducing bearing wear and friction and ensuring normal mechanical operation. Simultaneously, due to the adoption of the aforementioned cylinder structure, compressor noise is reduced, compressor performance is improved, and the compressor's service life is extended.

[0051] See Figure 8The compressor's suction structure is formed by a sealed connection between the pump body intake channel 7 and the distributor 13 bend, allowing refrigerant to enter the pump body through the distributor 13. However, due to the intermittent nature of the compressor's suction process and the refrigerant backflow in the high-pressure chamber, significant pressure pulsations occur in the low-pressure chamber of the cylinder 1 and the distributor 13. These pressure pulsations radiate noise through the distributor 13, affecting the compressor's noise characteristics. Furthermore, the suction pressure pulsations increase the compressor's power consumption, impacting its performance. The cylinder structure of this invention effectively reduces the compressor's suction noise and suction pulsations, expands the volume of the silencing chamber 20, broadens the resonant chamber's silencing frequency band, and reduces noise.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0053] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0054] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0055] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0056] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A cylinder block structure, characterized in that, include: The cylinder (1) includes a compression chamber (12) and an intake passage (7) communicating with the compression chamber (12). One end of the intake passage (7) is connected to the compression chamber (12), and the other end of the intake passage (7) is connected to the outside of the cylinder (1). A silencing cavity (20) is connected to the air intake channel (7) so that the fluid in the air intake channel (7) enters the silencing cavity (20) to eliminate the noise caused by the fluid; wherein the volume of the silencing cavity (20) is adjustable. The silencing cavity (20) includes: A connecting cavity (8) is connected to the air intake channel (7); A resonant cavity (9) is provided through the cylinder body (1) in a direction parallel to the extension direction of the compression cavity (12); Mounting cavity (81), one end of which is connected to the resonant cavity (9), and the other end of which is connected to the outside of the cylinder body (1); a sealing assembly (5) is provided inside the mounting cavity (81) to seal the mounting cavity (81). The sealing assembly (5) includes an adjustment component (51) which is movably disposed within the mounting cavity (81) to fill the mounting cavity (81) and / or the resonant cavity (9). The sealing assembly (5) includes: Mounting base (53), which is sealed within the mounting cavity (81); adjusting member (51) is movably disposed through the mounting base (53); adjusting member (51) has a first pushing part (55) located within the silencing cavity (20) and a second pushing part (56) located outside the silencing cavity (20).

2. The cylinder block structure according to claim 1, characterized in that, The mounting base (53) is provided with a mounting groove (54); an elastic element (52) is provided in the mounting groove (54), one end of the elastic element (52) abuts against the mounting base (53), and the other end of the elastic element (52) is connected to the adjusting component (51).

3. The cylinder block structure according to claim 2, characterized in that, The adjusting component (51) includes: A connector (511) abuts against the side wall of the mounting cavity (81). A first pushing part (55) is disposed on the connector (511). The first pushing part (55) includes a first force-bearing surface (551) and a second force-bearing surface (552) connected to each other. There is a preset angle between the first force-bearing surface (551) and the second force-bearing surface (552). The value range of the preset angle is 90° to 180°. A connecting rod (512) is connected to the connector (511), the connecting rod (512) passes through the mounting base (53), and the second pushing part (56) is located on the side of the connecting rod (512) away from the connector (511).

4. The cylinder block structure according to claim 1, characterized in that, The resonant cavity (9) is a circular through hole; the resonant cavity (9) is provided with an internal thread for connecting fasteners.

5. The cylinder block structure according to claim 1, characterized in that, The cylinder (1) includes a cylinder wall (6) surrounding the compression chamber (12), and a connecting cavity (14) is provided on the cylinder wall (6). The connecting cavity (14) penetrates the cylinder wall (6) and communicates with the silencing cavity (20).

6. The cylinder block structure according to claim 5, characterized in that, There are at least two silencers (20), and at least two silencers (20) are disposed on the cylinder wall (6) at intervals.

7. A compressor, characterized in that, include: The housing (4) has a receiving cavity (2) and the receiving cavity (2) is provided with a cylinder structure as described in any one of claims 1 to 6; A motor assembly (3) is disposed within the receiving cavity (2), the motor assembly (3) including a rotatably disposed rotor (10); A crankshaft assembly (11) is connected to the rotor (10) and is disposed in the compression chamber (12) to compress the fluid in the compression chamber (12).

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