A noise reduction air conditioner cylinder

Abstract

This utility model relates to the interdisciplinary field of HVAC and mechanical engineering, and discloses a noise-reducing air conditioner cylinder, including a sound-absorbing steel pipe. The sound-absorbing steel pipe has a replaceable piston inner wall, and the outer wall of the sound-absorbing steel pipe abuts against sound-absorbing cotton. An air cavity is provided outside the sound-absorbing cotton. A hexagonal through hole is formed in the inner wall of the sound-absorbing steel pipe, and a frame is provided outside the air cavity. A groove is formed inside the cylinder head, and a vibration-damping and sound-absorbing block is placed inside the groove. A through-hole vibration-damping block abuts on one side of the piston, and a vibration-damping and sound-absorbing block is also placed inside the groove. In this utility model, the sound-absorbing assembly, through the sound-absorbing cotton, air cavity, and sound-absorbing steel pipe, significantly reduces the mechanical vibration and airflow noise of the cylinder operation. Components such as the vibration-damping and sound-absorbing block and the annular rubber sleeve can reduce wear caused by vibration and reduce the occurrence of malfunctions.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning, and in particular to a noise-reducing air conditioner cylinder. Background Technology

[0002] In the field of HVAC, the air conditioning compressor is a key device in the air conditioning system, and the cylinder is the core moving part of the compressor, which undertakes the key process of "inhalation, compression and discharge" of refrigerant, and provides the power basis for the air conditioning cooling and heating cycle.

[0003] A cylinder mainly consists of a cylinder barrel, end caps, piston, piston rod, and seals. When working, compressed air enters the cylinder barrel and pushes the piston to move linearly inside the cylinder barrel. The piston rod then transmits the piston's movement to an external load, thereby realizing the corresponding mechanical action. For example, on an automated assembly line, the cylinder drives a robotic arm to complete operations such as gripping, handling, and assembling parts through the reciprocating motion of the piston.

[0004] Ordinary cylinders have a relatively obvious noise problem. The piston reciprocates at high speed inside the cylinder, and the friction and collision between the piston and the inner wall of the cylinder, as well as the friction between the piston rod and the seal, will generate mechanical noise. Ordinary cylinders are also difficult to disassemble and replace. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a noise-reducing air conditioner cylinder, which aims to improve the problems of insignificant noise reduction effect and difficult disassembly of existing cylinders.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A noise-reducing air conditioner cylinder includes a sound-absorbing steel pipe, the inside of which is provided with a replaceable piston inner wall, the outer wall of which is abutted with sound-absorbing cotton, and an air cavity is provided outside the sound-absorbing cotton. The inner wall of the sound-absorbing steel pipe is provided with a hexagonal through hole, and a frame is provided outside the air cavity. As a further description of the above technical solution: A gasket is provided on one side of the frame, and a cylinder head is provided on one side of the gasket. Tensioner buckles are fixedly connected around the cylinder head, and a buckle is fixedly connected to one side of the frame. As a further description of the above technical solution: A through-hole end cap is provided on one side of the frame, and a piston connecting rod is slidably connected inside the through-hole end cap. A threaded groove is provided at the bottom of the piston connecting rod. As a further description of the above technical solution: The threaded groove is rotatably connected to a threaded rod, and the threaded rod is fixedly connected to a circular base; As a further description of the above technical solution: The piston connecting rod is fixedly connected to the piston, and the piston has a groove on its outer side and the piston connecting rod has a groove. As a further description of the above technical solution: The cylinder head has a groove inside, and a shock-absorbing and noise-dampening block is installed inside the groove. The tensioning lock is engaged with the outer wall of the lock. As a further description of the above technical solution: The piston has a slot on its outer side, which is engaged with an annular rubber sleeve. A through-hole shock absorber is engaged with one side of the piston. As a further description of the above technical solution: The slot is engaged with a retaining ring, and one side of the retaining ring abuts against one side of the through-hole damping block.

[0007] This utility model has the following beneficial effects: 1. In this utility model, the structure of the sound-absorbing steel pipe itself can serve as a sound barrier. Combined with the sound-absorbing cotton and air cavity filled outside the sound-absorbing steel pipe, it directly weakens the transmission of mechanical noise inside the cylinder to the outside, further reducing the overall noise.

[0008] 2. In this utility model, the tightening lock can tightly fit the cylinder body, end cover, silencer steel pipe, replaceable piston inner wall and other components through mechanical locking force, so as to avoid loosening of gaps caused by long-term operation vibration and reduce internal mechanical noise leakage from the gaps. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a noise-reducing air conditioner cylinder proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the end cover of a noise-reducing air conditioner cylinder proposed in this utility model; Figure 3 This is a schematic diagram of the piston connecting rod of a noise-reducing air conditioner cylinder proposed in this utility model.

[0010] Figure 4 This is a schematic diagram of the structure of a gasket for a noise-reducing air conditioner cylinder proposed in this utility model.

[0011] Figure 5 This is a schematic diagram of the structure of a vibration damping and sound-absorbing block for a noise-reducing air conditioner cylinder proposed in this utility model.

[0012] Figure 6 This is a schematic diagram of the structure of a noise-reducing steel pipe for an air conditioner cylinder proposed in this utility model.

[0013] Legend: 1. Silencing steel pipe; 2. Replaceable piston inner wall; 3. Silencing cotton; 4. Air cavity; 5. Hexagonal through hole; 6. Frame; 7. Gasket; 8. Cylinder head; 9. Tensioner lock; 10. Lock; 11. Through hole end cap; 12. Piston connecting rod; 13. Threaded groove; 14. Threaded rod; 15. Circular base; 16. Vibration damping block; 17. Piston; 18. Groove; 19. Slot; 20. Snap ring; 21. Annular rubber sleeve; 22. Through hole vibration damping block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Reference Figure 3 , Figure 5 and Figure 6 This utility model provides an embodiment of a noise-reducing air conditioner cylinder, including a sound-absorbing steel pipe 1. The sound-absorbing steel pipe 1 has a replaceable piston inner wall 2 inside. The function of the sound-absorbing steel pipe 1 is to attenuate the pulsating noise of the refrigerant airflow inside the compressor. Utilizing its own structure, it causes reflection, interference, and energy dissipation when the airflow noise propagates inside the pipe. The outer wall of the sound-absorbing steel pipe 1 is abutted with sound-absorbing cotton 3. The sound-absorbing cotton 3 has a porous structure that allows sound waves to enter. The air vibration and friction within the pores converts mid-to-high frequency noise into heat energy dissipation, thus blocking mechanical vibration and airflow inside the cylinder. The flow noise radiates outward, reducing the transmission of noise through the shell. The flexible material buffers the vibration transmission of the components, reducing the low-frequency roar caused by structural resonance and further optimizing the noise spectrum. An air cavity 4 is set outside the sound-absorbing cotton 3. The air cavity 4 acts as an elastic medium layer, which can isolate the rigid connection between the cylinder and the shell and block the vibration transmission path. A damping and sound-absorbing block 16 is set inside the groove 18. The damping and sound-absorbing block 16 absorbs mechanical vibration through flexible material, blocks the transmission of vibration between the shell and the support, reduces structural resonance, and weakens the noise caused by vibration.

[0016] Reference Figure 1 , Figure 2 and Figure 4 A gasket 7 is provided on one side of the frame 6. The gasket 7 is made of elastic or gradient thickness materials such as rubber or metal sheets. It can adjust the assembly gap by adapting the thickness, buffer the vibration transmission between the two by elastic deformation, and reduce the friction and wear of the contact surface by using the wear-resistant layer on the surface. A cylinder head 8 is provided on one side of the gasket 7. The cylinder head 8, through its own rigid sealing surface and the elastic filling of the gasket 7, constructs a rigid and elastic seal. Tensioner locks 9 are fixedly connected to all four sides of the cylinder head 8. The tensioner locks 9 force the cylinder head 8, gasket 7 and frame 6 to lock together as a rigid whole. A through-hole end cap 11 is provided on one side of the frame 6. A piston connecting rod 12 is slidably connected inside the through-hole end cap 11. The piston connecting rod 12 is used to connect the power device and drive the piston to move. A piston 17 is fixedly connected to the piston connecting rod 12. The piston 17 is the core component of the reciprocating motion device.

[0017] Working principle: First, a "flexible seal" is formed between the piston 17 and the replaceable piston inner wall 2 through the groove 19, the retaining ring 20, and the annular rubber sleeve 21. This ensures airtightness and absorbs the frictional vibration of the piston 17's reciprocating motion by utilizing the damping characteristics of the rubber sleeve. The damping and noise reduction block 16 at the bottom of the piston connecting rod 12 weakens the rigid vibration transmitted from the piston connecting rod 12 to the cylinder, preventing the vibration from being converted into air noise.

[0018] The frame 6 and cylinder head 8 are fixed by tightening latches 9 and 10, which can block the transmission of cylinder vibration to other parts of the air conditioner outdoor unit. After noise enters the silencer steel pipe 1, it is first dispersed through the hexagonal through-hole 5. Utilizing its own structure, the airflow noise is reflected, interfered with, and dissipated when it propagates in the pipe. The air cavity 4, as an elastic medium layer, can isolate the rigid connection between the cylinder and the shell, blocking the vibration transmission path. The sound-absorbing cotton 3 is installed on the outer wall of the silencer steel pipe 1. It is a resistive sound-absorbing material. The high-frequency noise generated by airflow friction and impact is converted into heat energy by the porous structure of the sound-absorbing cotton, directly weakening the airflow sound energy. The internal sound-absorbing cotton 3 and air cavity 4 further absorb noise, doubly preventing the internal noise from spreading outward. The groove 18 and annular rubber sleeve 21 of the piston 17, in addition to sealing, also reduce airflow leakage noise caused by poor sealing.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A noise reduction air conditioner cylinder comprising a sound deadening steel pipe (1), characterized in that: The sound-absorbing steel pipe (1) has a replaceable piston inner wall (2) inside, the outer wall of the sound-absorbing steel pipe (1) is in contact with sound-absorbing cotton (3), the outer side of the sound-absorbing cotton (3) is provided with an air cavity (4), the inner wall of the sound-absorbing steel pipe (1) is provided with a hexagonal through hole (5), and the outer side of the air cavity (4) is provided with a frame (6).

2. The air cylinder of claim 1, wherein: A gasket (7) is provided on one side of the frame (6), and a cylinder head (8) is provided on one side of the gasket (7). Tensioning buckles (9) are fixedly connected around the cylinder head (8), and a buckle (10) is fixedly connected on one side of the frame (6).

3. The air cylinder of claim 1, wherein: A through-hole end cap (11) is provided on one side of the frame (6), and a piston connecting rod (12) is slidably connected inside the through-hole end cap (11). A threaded groove (13) is provided at the bottom of the piston connecting rod (12).

4. The air cylinder of claim 3, wherein: The threaded groove (13) is rotatably connected to a threaded rod (14), and the threaded rod (14) is fixedly connected to a circular base (15).

5. The air cylinder of claim 3, wherein: The piston rod (12) is fixedly connected to the piston (17), the piston rod (12) has a groove (19), and the piston (17) has a groove (19) on its outer side.

6. A noise-reducing air conditioner cylinder according to claim 2, characterized in that: The cylinder head (8) has a groove (18) inside, and a shock-absorbing and noise-dampening block (16) is provided inside the groove (18). The tensioning buckle (9) is engaged with the outer wall of the buckle (10).

7. The air cylinder of claim 5, wherein: The slot (19) is engaged with an annular rubber sleeve (21), and a through-hole damping block (22) is abutted on one side of the piston (17).

8. The air cylinder of claim 5, wherein: The slot (19) is engaged with a retaining ring (20), and one side of the retaining ring (20) abuts against the inside of the through hole damping block (22).

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