Low-noise two-stage compression air conditioner compressor

Abstract

The utility model relates to the technical field of compressor equipment, in particular to a low-noise two-stage compression air conditioner compressor which comprises a compressor body, a driving motor is fixedly mounted on one side of the compressor body, an air outlet pipe is arranged on one side of the compressor body, and an air inlet pipe is arranged on the other side of the compressor body; a sound absorption assembly is arranged on one side of the compressor body. A sound absorption cavity can be divided into a plurality of small cavities through a multi-cavity sound absorption rod composed of a first sound absorption partition plate, a second sound absorption partition plate and the like by means of polyurethane foam and a metal porous plate structure filled in the multi-cavity sound absorption rod. And the sound insulation cotton filled between the cross ring and the adapter tube further blocks the propagation path of the noise, the noise generated in the compressor is absorbed and blocked through the porous characteristic and the sound absorption capacity of the sound insulation cotton, the noise is prevented from being diffused outwards through components such as the adapter tube, and the overall sound absorption effect is enhanced.

Description

Technical Field

[0001] This application relates to the field of compressor equipment technology, and in particular to a low-noise two-stage compression air conditioning compressor. Background Technology

[0002] With the improvement of people's living standards and the increasing demand for comfortable living environments, air conditioners are becoming more and more widely used. Traditional air conditioner compressors generate considerable noise during operation, which causes some annoyance to users. To meet users' needs for a quiet environment, the development of low-noise compressors has become crucial. Simultaneously, to improve the cooling or heating efficiency of air conditioners, two-stage compression technology has emerged, which can more effectively compress the refrigerant and improve the performance of the air conditioning system. Traditional compressors typically only use single-stage compression and lack specific noise reduction measures in their structural design. Their internal mechanical components generate strong vibrations and noise during operation, including the rotation of the motor, the rapid flow of refrigerant, and the compression process. This noise is transmitted through the casing and pipes, affecting the user experience. Furthermore, due to the lack of multi-stage compression, the refrigerant processing is not precise enough, resulting in relatively low energy efficiency under certain operating conditions.

[0003] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Existing devices lack a dedicated flow-damping mechanism, which causes the refrigerant airflow to enter the compressor at excessively high speeds, generating significant airflow impact noise and potentially affecting the compressor's intake stability. This can lead to performance fluctuations during compressor operation, impacting its overall efficiency and reliability. Furthermore, the lack of proper intake airflow regulation can result in uneven airflow, potentially causing localized high or low pressures in the compressor during operation. This increases the compressor's workload and may also cause wear on other components, affecting the performance and lifespan of the entire air conditioning system. Utility Model Content

[0004] In view of the shortcomings of the prior art and in order to solve the problems mentioned in the background art, this application provides a low-noise two-stage compression air conditioning compressor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-noise two-stage compression air conditioning compressor, including a compressor body, a drive motor fixedly installed on one side of the compressor body, an air outlet pipe provided on one side of the compressor body, an air inlet pipe provided on the other side of the compressor body, and a sound-absorbing component provided on one side of the compressor body.

[0006] The sound-absorbing assembly includes an adapter pipe, a sealing cap, a limiting hole, a capillary tube, a capillary orifice, and a flow-damping shroud. The adapter pipe is fixedly sleeved on the top of the intake pipe. A sealing cap is fixedly installed on the top of the adapter pipe. A limiting hole is formed through the top of the sealing cap. A capillary tube is fixedly sleeved inside the limiting hole. A capillary orifice is formed through the top of the capillary tube. A flow-damping shroud is fixedly connected to the bottom of the capillary tube. The flow-damping shroud is installed at the bottom of the capillary tube to buffer and slow down the incoming refrigerant airflow, reducing the airflow speed and noise generated by high-speed airflow, while also helping to stabilize the intake process.

[0007] Optionally, the sound-absorbing assembly further includes a sound-absorbing cavity cover, a sound-absorbing cavity shell, a sound-absorbing cavity flexible connecting plate, a first sound-absorbing partition, a second sound-absorbing partition, and a support column. The sound-absorbing cavity cover is fixedly installed on one side of the compressor body. The sound-absorbing cavity shell is fixedly connected to one side of the sound-absorbing cavity cover. The sound-absorbing cavity flexible connecting plate is disposed inside the sound-absorbing cavity shell. A first sound-absorbing partition is fixedly connected between the sound-absorbing cavity shell and the sound-absorbing cavity flexible connecting plate. A second sound-absorbing partition is fixedly connected to one side of each of the first sound-absorbing partitions. A support column is fixedly connected to one side of each of the second sound-absorbing partitions. A buffer pad is disposed between the sound-absorbing cavity flexible connecting plate and the compressor body. The sound-absorbing cavity flexible connecting plate has a certain buffering and sound-absorbing capacity. In conjunction with the sound-absorbing cavity shell, it utilizes its soft properties to absorb some of the vibration and noise generated by the compressor operation, while also buffering the vibration transmitted from the compressor body, thus playing a role in vibration reduction and noise reduction.

[0008] Optionally, the sound-absorbing assembly further includes a cross ring, an air intake ring, a flow-damping hole, a spring, and a sound-absorbing block. The cross ring is fixedly installed inside the adapter tube. The bottom of the cross ring is fixedly connected to the air intake ring, and the top of the air intake ring has a flow-damping hole. The top of the air intake ring is fixedly connected to the spring, and the top of the spring is fixedly connected to the sound-absorbing block. The cross ring, installed inside the adapter tube, serves as support and separation, providing installation positions for components such as the air intake ring. Simultaneously, together with the sound-absorbing cotton filling the space between the adapter tubes, it performs sound absorption and insulation functions, blocking the transmission of noise.

[0009] Optionally, the capillary tube, the flow hood, the adapter tube, and the air inlet tube constitute an air inlet cavity, and the capillary pores are composed of three layers of pores with different diameters, wherein the diameter of the outer layer of pores is larger than that of the inner layer of pores.

[0010] Optionally, the sound-absorbing block is movably fitted inside the cross ring, and the sound-absorbing block has a sponge-like porous structure.

[0011] Optionally, sound insulation cotton is filled between the cross ring and the adapter pipe, and an air-blocking baffle is provided at the bottom of the sound insulation cotton.

[0012] Optionally, the second sound-absorbing partition, the first sound-absorbing partition, and the support column together constitute a multi-chamber sound-absorbing rod. The first and second sound-absorbing partitions are both made of polyurethane foam and a metal porous plate, wherein the metal porous plate is the outer shell and the interior is filled with polyurethane foam board.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model utilizes a multi-chamber sound-absorbing rod composed of a first sound-absorbing partition, a second sound-absorbing partition, etc., and employs polyurethane foam and a porous metal plate structure to divide the sound-absorbing cavity into multiple small chambers. This multi-chamber structure effectively reduces noise at different frequencies through multiple reflections, absorptions, and scatterings of sound waves. The sound-insulating cotton filling between the cross ring and the adapter further blocks the noise propagation path. Through its porous characteristics and sound-absorbing capacity, it absorbs and blocks noise generated inside the compressor, preventing noise from diffusing outward through the adapter and other components, thus enhancing the overall sound absorption effect.

[0015] 2. In use, the flow-damping shield on the adapter pipe buffers the incoming refrigerant airflow, reducing its speed and impact, and minimizing noise caused by rapid airflow. When refrigerant enters through the inlet pipe, the flow-damping shield slows the airflow, allowing it to enter subsequent components more smoothly and avoiding loud noise caused by high-speed airflow impact. The flow-damping holes on the inlet ring further divert and slow the refrigerant airflow, dispersing it into multiple smaller airflows, reducing mutual impact between airflows and impact on the pipe, lowering noise caused by airflow impact, and also helping to improve the compressor's operational stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiments of this application;

[0017] Figure 2 This is a schematic diagram of a partial structure of the device in an embodiment of this application;

[0018] Figure 3 This is a partial structural diagram of the sound-absorbing component in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of a partial structure installation of the sound-absorbing component in an embodiment of this application;

[0020] Figure 5 This is a partial structural cross-sectional diagram of the sound-absorbing component in an embodiment of this application;

[0021] Reference numerals: 1. Compressor body; 2. Drive motor; 3. Outlet pipe; 4. Inlet pipe; 5. Sound absorption assembly; 501. Sound absorption cavity cover plate; 502. Sound absorption cavity shell; 503. Sound absorption cavity flexible connection plate; 504. First sound absorption partition; 505. Second sound absorption partition; 506. Support column; 507. Adapter pipe; 508. Sealing cover; 509. Limiting hole; 510. Capillary tube; 511. Capillary hole; 512. Flow buffer; 513. Cross ring; 514. Inlet ring; 515. Flow buffer hole; 516. Spring; 517. Sound absorption block. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] This application discloses a low-noise two-stage compression air conditioning compressor.

[0024] Please see Figure 1 A low-noise two-stage compression air conditioning compressor includes a compressor body 1, a drive motor 2 fixedly installed on one side of the compressor body 1, an air outlet pipe 3 provided on one side of the compressor body 1, an air inlet pipe 4 provided on the other side of the compressor body 1, and a sound-absorbing component 5 provided on one side of the compressor body 1.

[0025] Please see Figures 2 to 5 The sound-absorbing component 5 includes an adapter pipe 507, a sealing cap 508, a limiting hole 509, a capillary tube 510, a capillary hole 511, and a flow buffer 512. The adapter pipe 507 is fixedly sleeved on the top of the air intake pipe 4. The sealing cap 508 is fixedly installed on the top of the adapter pipe 507. The limiting hole 509 is opened through the top of the sealing cap 508. The capillary tube 510 is fixedly sleeved inside the limiting hole 509. The capillary hole 511 is opened through the top of the capillary tube 510. The flow buffer 512 is fixedly connected to the bottom of the capillary tube 510.

[0026] The sound-absorbing assembly 5 also includes a sound-absorbing cavity cover plate 501, a sound-absorbing cavity shell 502, a sound-absorbing cavity flexible connecting plate 503, a first sound-absorbing partition 504, a second sound-absorbing partition 505, and a support column 506. The sound-absorbing cavity cover plate 501 is fixedly installed on one side of the compressor body 1. The sound-absorbing cavity shell 502 is fixedly connected to one side of the sound-absorbing cavity cover plate 501. The sound-absorbing cavity flexible connecting plate 503 is provided inside the sound-absorbing cavity shell 502. The first sound-absorbing partition 504 is fixedly connected between the sound-absorbing cavity shell 502 and the sound-absorbing cavity flexible connecting plate 503. The second sound-absorbing partition 505 is fixedly connected to one side of the first sound-absorbing partition 504. The support column 506 is fixedly connected to one side of the second sound-absorbing partition 505. A buffer pad is provided between the sound-absorbing cavity flexible connecting plate 503 and the compressor body 1.

[0027] The sound-absorbing component 5 also includes a cross ring 513, an air intake ring 514, a slow-flow hole 515, a spring 516, and a sound-absorbing block 517. The cross ring 513 is fixedly installed inside the adapter pipe 507. The bottom of the cross ring 513 is fixedly connected to the air intake ring 514. The top of the air intake ring 514 has a through-hole 515. The top of the air intake ring 514 is fixedly connected to the spring 516. The top of the spring 516 is fixedly connected to the sound-absorbing block 517.

[0028] The capillary tube 510, the flow shroud 512, the adapter tube 507 and the air inlet tube 4 constitute the air inlet cavity. The capillary pore 511 is composed of three layers of pores with different diameters, wherein the diameter of the outer layer pores is larger than that of the inner layer pores.

[0029] The sound-absorbing block 517 is movably fitted inside the cross ring 513, and the sound-absorbing block 517 has a sponge-like porous structure.

[0030] The space between the cross ring 513 and the adapter pipe 507 is filled with sound insulation cotton, and the bottom of the sound insulation cotton is equipped with an air barrier.

[0031] The second sound-absorbing partition 505, the first sound-absorbing partition 504, and the support column 506 together constitute a multi-chamber sound-absorbing rod. The first sound-absorbing partition 504 and the second sound-absorbing partition 505 are both made of polyurethane foam and metal porous plate, wherein the metal porous plate is the outer shell and the inside is filled with polyurethane foam board.

[0032] Further explanation is needed:

[0033] Its main function is sound absorption and noise reduction. The multi-chamber sound-absorbing rod consists of a first sound-absorbing baffle, a second sound-absorbing baffle, etc. Utilizing its unique structure and filling materials, it divides the sound-absorbing cavity into multiple small chambers, capable of absorbing noise of different frequencies. The sponge-like porous structure of the sound-absorbing block, along with the sound-insulating cotton between the cross-rings and the connecting pipes, effectively absorbs and blocks noise transmission, significantly reducing the noise generated by the compressor as it passes through this component.

[0034] In terms of intake airflow regulation, the adapter pipe acts as a connecting hub, guiding the airflow from the intake pipe to subsequent components. The flow damper and the flow-damping holes on the intake ring buffer and disperse the airflow, slowing down the flow rate, avoiding noise caused by airflow impact, ensuring that the airflow enters the compressor smoothly, and facilitating stable compressor operation.

[0035] Structural stability and vibration damping are indispensable. Support columns ensure the structural stability of the sound-absorbing cavity, while the buffer pad between the soft connection plate of the sound-absorbing cavity and the compressor, and the spring connecting the air intake ring and the sound-absorbing block, can absorb and buffer the vibration of the compressor, prevent component damage, ensure that the sound-absorbing components can perform their noise reduction functions normally, and improve the compressor performance and user experience.

[0036] The working principle of the above embodiments is as follows:

[0037] First, the low-temperature, low-pressure refrigerant enters the compressor through the intake pipe 4. During the intake process, it first passes through the sound-absorbing component 5. The adapter pipe 507 guides the refrigerant in, and at this time, the flow damper 512 initially buffers the refrigerant airflow, slowing its flow rate. The flow damper holes 515 on the intake ring 514 disperse the airflow, making the refrigerant airflow more stable and reducing the noise generated by airflow impact. At the same time, the sound-absorbing blocks 517, sound insulation cotton, and other components in the sound-absorbing component 5 absorb some of the noise generated by the refrigerant flow, thereby reducing the noise level during the intake process.

[0038] Secondly, the drive motor 2 provides power to the compressor body 1, enabling it to begin compressing the incoming refrigerant. The compressor body 1 employs two-stage compression technology, compressing the refrigerant twice, gradually changing it from a low-temperature, low-pressure state to a high-temperature, high-pressure state. During this process, the internal mechanical components of the compressor will generate some vibration and noise. The sound-absorbing cavity cover 501 and the sound-absorbing cavity shell 502 in the sound-absorbing assembly 5 then function, absorbing and reflecting the noise through the multi-chamber structure formed by the internal sound-absorbing cavity flexible connection plate 503, the first sound-absorbing baffle 504, and the second sound-absorbing baffle 505, thus reducing noise propagation. Simultaneously, the support column 506 ensures the structural stability of the sound-absorbing cavity, preventing damage to the sound-absorbing components due to vibration.

[0039] Finally, the compressed, high-temperature, high-pressure refrigerant is discharged from the compressor through the outlet pipe 3. Throughout the process, the sound-absorbing component 5 continuously plays its role in sound absorption and noise reduction, minimizing the transmission of noise generated by the compressor's operation to the outside. The sound insulation cotton, spring 516, and other sound-absorbing structures between the cross ring 513 and the adapter pipe 507 continuously absorb and block the noise generated during compressor operation, effectively reducing the overall noise level of the compressor during operation.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-noise two-stage compression air conditioning compressor, comprising a compressor body (1), characterized in that: A drive motor (2) is fixedly installed on one side of the compressor body (1), an air outlet pipe (3) is provided on one side of the compressor body (1), an air inlet pipe (4) is provided on the other side of the compressor body (1), and a sound absorption component (5) is provided on one side of the compressor body (1). The sound-absorbing component (5) includes an adapter pipe (507), a sealing cap (508), a limiting hole (509), a capillary tube (510), a capillary hole (511), and a flow hood (512). The adapter pipe (507) is fixedly sleeved on the top of the air intake pipe (4). The top of the adapter pipe (507) is fixedly installed with a sealing cap (508). The top of the sealing cap (508) has a limiting hole (509) through it. The capillary tube (510) is fixedly sleeved inside the limiting hole (509). The top of the capillary tube (510) has a capillary hole (511) through it. The bottom of the capillary tube (510) is fixedly connected with a flow hood (512).

2. The low-noise two-stage compression air conditioning compressor according to claim 1, characterized in that: The sound-absorbing assembly (5) further includes a sound-absorbing cavity cover plate (501), a sound-absorbing cavity shell (502), a sound-absorbing cavity flexible connecting plate (503), a first sound-absorbing partition plate (504), a second sound-absorbing partition plate (505), and a support column (506). The sound-absorbing cavity cover plate (501) is fixedly installed on one side of the compressor body (1). The sound-absorbing cavity shell (502) is fixedly connected to one side of the sound-absorbing cavity cover plate (501). The sound-absorbing cavity flexible connecting plate (503) is provided inside the sound-absorbing cavity shell (502). The first sound-absorbing partition plate (504) is fixedly connected between the sound-absorbing cavity shell (502) and the sound-absorbing cavity flexible connecting plate (503). The second sound-absorbing partition plate (505) is fixedly connected to one side of the first sound-absorbing partition plate (504). The support column (506) is fixedly connected to one side of the second sound-absorbing partition plate (505). A buffer pad is provided between the sound-absorbing cavity flexible connecting plate (503) and the compressor body (1).

3. The low-noise two-stage compression air conditioning compressor according to claim 1, characterized in that: The sound-absorbing component (5) further includes a cross ring (513), an air intake ring (514), a slow-flow hole (515), a spring (516), and a sound-absorbing block (517). The cross ring (513) is fixedly installed inside the adapter pipe (507). The bottom of the cross ring (513) is fixedly connected to the air intake ring (514). The top of the air intake ring (514) is provided with a slow-flow hole (515). The top of the air intake ring (514) is fixedly connected to the spring (516). The top of the spring (516) is fixedly connected to the sound-absorbing block (517).

4. A low-noise two-stage compression air conditioning compressor according to claim 2, characterized in that: The capillary tube (510), the flow hood (512), the adapter tube (507) and the air inlet tube (4) constitute the air inlet cavity. The capillary pore (511) is composed of three layers of pores with different diameters, wherein the diameter of the outer layer pore is larger than that of the inner layer pore.

5. A low-noise two-stage compression air conditioning compressor according to claim 3, characterized in that: The sound-absorbing block (517) is movably fitted inside the cross ring (513), and the sound-absorbing block (517) has a sponge-like porous structure.

6. A low-noise two-stage compression air conditioning compressor according to claim 5, characterized in that: The space between the cross ring (513) and the adapter pipe (507) is filled with sound insulation cotton, and the bottom of the sound insulation cotton is provided with an air-blocking baffle.

7. A low-noise two-stage compression air conditioning compressor according to claim 2, characterized in that: The second sound-absorbing partition (505), the first sound-absorbing partition (504), and the support column (506) together constitute a multi-chamber sound-absorbing rod. The first sound-absorbing partition (504) and the second sound-absorbing partition (505) are both made of polyurethane foam and metal porous plate, wherein the metal porous plate is the outer shell and the interior is filled with polyurethane foam board.

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