An internal exhaust pipe assembly for a compressor and its operating method

Abstract

This invention discloses an internal exhaust pipe assembly for a compressor and its operating method. The internal exhaust pipe assembly includes an internal exhaust pipe and a muffler box. The muffler box has an air inlet and an air outlet. The internal exhaust pipe includes a first pipe and a second pipe. The first pipe is connected to the cylinder seat muffler cavity and the air inlet, respectively. The second pipe is connected to the compressor exhaust pipe and the air outlet, respectively. The muffler box has a sound-absorbing structure. By implementing the internal exhaust pipe assembly of this invention, the noise and vibration performance of the compressor during operation can be improved, thereby enhancing the overall performance and reliability of the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to an internal exhaust pipe assembly for a compressor and its operating method. Background Technology

[0002] The piston compressors widely used in refrigerators on the market today work by converting the rotational motion of the crankshaft, driven by an electric motor, into the reciprocating motion of the piston via a connecting rod. During this process, the gas inside the compression chamber is forced to compress, changing from a low-temperature, low-pressure state to a high-temperature, high-pressure state. This periodic reciprocating motion inevitably generates a significant amount of noise and vibration in the compressor.

[0003] To address noise issues, compressors are typically equipped with internal exhaust pipes, but the layout of these pipes is often complex and lengthy. Furthermore, vibrations in the compressor's internal components can cause the internal exhaust pipe to rupture, thus affecting the compressor's normal operation. Although some internal exhaust pipes are equipped with horizontally placed mufflers, which can reduce noise to some extent, these devices do not effectively mitigate vibration.

[0004] Therefore, it is necessary to design a new component to improve the noise and vibration performance of the compressor during operation, thereby enhancing the overall performance and reliability of the compressor. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an internal exhaust pipe assembly for a compressor and its operating method.

[0006] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: providing an internal exhaust pipe assembly for a compressor, comprising: an internal exhaust pipe and a muffler box, wherein the muffler box is provided with an air inlet and an air outlet, the internal exhaust pipe comprising a first pipe and a second pipe, the first pipe being connected to the cylinder seat muffler cavity and the air inlet respectively; the second pipe being connected to the compressor exhaust pipe and the air outlet respectively, and the muffler box being provided with a muffler structure.

[0007] The further technical solution is as follows: the silencing box includes a box body, the silencing structure includes a first baffle plate and a second baffle plate, and the box body is provided with a silencing cavity; the first baffle plate and the second baffle plate are built into the silencing cavity.

[0008] The further technical solution is as follows: the first baffle plate includes a first blocking plate and a first spiral plate. The first blocking plate is connected above the first spiral plate, and the first spiral plate spirals counterclockwise in a downward direction. One side of the first blocking plate abuts against the air inlet.

[0009] The further technical solution is as follows: the first spiral plate is provided with a number of oil leakage holes.

[0010] The further technical solution is as follows: the second baffle plate includes a second baffle plate and a second spiral plate. The second baffle plate is connected above the second spiral plate, and the second spiral plate spirals clockwise in an upward direction. The two sides of the second baffle plate abut against the air outlet.

[0011] The further technical solution is as follows: the second spiral plate is provided with a number of oil leakage holes.

[0012] The further technical solution is as follows: the box body includes a first box body and a second box body. The first box body has an opening on one side, and the second box body has an opening on one side. The side of the first box body with the opening and the side of the second box body with the opening are connected by a detachable structure. The first box body has a first air inlet and a first air outlet. The second box body has a second air inlet and a second air outlet. The first air inlet and the second air inlet together form the air inlet. The first air outlet and the second air outlet together form the air outlet.

[0013] The further technical solution is that the box body is U-shaped.

[0014] The further technical solution is as follows: the box body includes an arc-shaped section and two vertical sections, the two vertical sections are respectively connected to the two ends of the arc-shaped section, the air inlet is located on one of the vertical sections, the air outlet is located on the other vertical section, the first baffle is installed in the vertical section with the air inlet, and the second baffle is installed in the vertical section with the air outlet.

[0015] Furthermore, to overcome the shortcomings of the prior art, the present invention also provides a method of operation performed by the aforementioned internal exhaust pipe assembly for a compressor, characterized in that it includes:

[0016] The compressed gas first enters the cylinder block muffler chamber, and then enters the muffler box through the first pipeline from the air inlet;

[0017] The first and second baffles inside the muffler box guide the flow direction and concentrate the entrained refrigerant oil at the bottom of the muffler box.

[0018] After the gas is output from the outlet of the silencer box, it enters the compressor exhaust pipe through the second pipeline.

[0019] The beneficial effects of this invention compared with the prior art are as follows: This invention sets up an internal exhaust pipe and a muffler box, the muffler box is provided with an air inlet and an air outlet; the internal exhaust pipe is composed of a first pipe and a second pipe, which are respectively connected to the cylinder seat muffler cavity and the compressor exhaust pipe; the muffler box is provided with a muffler structure to reduce noise; thereby improving the noise and vibration performance of the compressor during operation, thus improving the overall performance and reliability of the compressor.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural schematic diagram of an internal exhaust pipe assembly for a compressor provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the connection structure of an internal exhaust pipe assembly for a compressor provided in an embodiment of the present invention;

[0024] Figure 3 An exploded structural diagram of an internal exhaust pipe assembly for a compressor, provided as an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the main structure of the first box body provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the main structure of the second box body provided in an embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the first baffle provided in an embodiment of the present invention;

[0028] Figure 7 A top view of the first baffle plate provided in an embodiment of the present invention;

[0029] Figure 8 A cross-sectional structural diagram of an internal exhaust pipe assembly for a compressor provided in an embodiment of the present invention;

[0030] Figure 9 A top view of the gas flow direction of an internal exhaust pipe assembly for a compressor, provided as an embodiment of the present invention;

[0031] Explanation of the markings in the image:

[0032] 1. Internal exhaust pipe; 11. First pipeline; 12. Second pipeline; 2. Silencer box; 21. First box body; 211. First air intake notch; 212. First air outlet notch; 22. Second box body; 221. Second air intake notch; 222. Second air outlet notch; 23. First baffle plate; 231. First baffle plate; 232. First spiral plate; 233. Oil leakage hole; 24. Second baffle plate; 241. Second baffle plate; 242. Second spiral plate; 25. Air inlet; 26. Air outlet; 3. Cylinder seat silencer chamber; 4. Compressor exhaust pipe. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0035] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0037] Current refrigerator piston compressors, driven by an electric motor, convert the crankshaft's rotational motion into the reciprocating motion of the piston via a connecting rod. During this process, the gas inside the compressor chamber is compressed, changing from a low-temperature, low-pressure state to a high-temperature, high-pressure state. This periodic reciprocating motion generates significant noise and vibration in the compressor. To reduce noise, compressors are typically equipped with complex internal exhaust pipes (1), but the intense vibration of the compressor core can also lead to pipe rupture. While some silencing devices can reduce noise, their effect on vibration mitigation is limited. In other words, the existing compressor reciprocating motion causes significant core vibration, high noise levels, and a high risk of reliability failure; the internal exhaust pipe (1) is lengthy, bulky, and costly.

[0038] Therefore, embodiments of the present invention mention an internal exhaust pipe assembly for a compressor, which improves the noise and vibration performance of the compressor during operation, thereby enhancing the overall performance and reliability of the compressor.

[0039] Specifically, the internal exhaust pipe assembly for the compressor includes an internal exhaust pipe 1 and a muffler box 2. The internal exhaust pipe 1 includes a first pipe 11 and a second pipe 12, guiding the compressor exhaust from inside the compressor core to the outside. The muffler box 2 includes a first box body 21, a second box body 22, and two spiral baffles, forming a "U" shape to effectively reduce noise. The airflow first enters the muffler box 2 through the first pipe 11, and then passes counterclockwise downwards and clockwise upwards through the baffles on both sides. The micropores on the baffles help collect refrigerant oil, reducing the unidirectional pressure of the airflow on the pipes, thereby mitigating the vibration of the exhaust pipe and improving the noise and stability of the compressor.

[0040] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0041] Please see Figure 1 , Figure 1 This is a three-dimensional structural diagram of an internal exhaust pipe assembly for a compressor provided by an embodiment of the present invention. The internal exhaust pipe assembly for the compressor includes: an internal exhaust pipe 1 and a muffler box 2. The muffler box 2 is provided with an air inlet 25 and an air outlet 26. The internal exhaust pipe 1 includes a first pipe 11 and a second pipe 12. Please refer to the diagram. Figure 2 The first pipe 11 is connected to the cylinder seat muffler 3 and the air inlet 25 respectively; the second pipe 12 is connected to the compressor exhaust pipe 4 and the air outlet 26 respectively; the muffler box 2 is equipped with a muffler structure.

[0042] The gas generated by the compressor is connected to the air inlet 25 of the muffler box 2 through the first pipeline 11, and then enters the muffler box 2. Inside the muffler box 2, the airflow passes through the muffler structure, changes the flow direction, and thus reduces noise. In addition, the muffler structure can also allow the entrained refrigeration oil to be concentrated and stored at the bottom of the muffler box 2, effectively separating the oil and gas. The vertical placement of the muffler box 2 is consistent with the direction of force on the pipeline, which reduces the vibration of the exhaust pipeline.

[0043] The design of the muffler box 2 effectively reduces the noise of the compressor during operation; the optimized airflow path reduces energy loss and improves system operating efficiency; the reduced vibration and noise help reduce the risk of compressor failure and improve the user experience; the design of the internal exhaust pipe 1 simplifies the overall structure and reduces production and maintenance costs.

[0044] In this embodiment, the first pipe 11 and the second pipe 12 are hollow circular pipes with a wall thickness generally between 0.3 mm and 1.0 mm. The appropriate specifications are selected according to national standards.

[0045] The inner diameter of the first pipe 11 is larger than the inner diameter of the second pipe 12, typically ranging from 1.0 mm to 4.5 mm, in order to achieve the effect of throttling and reducing pressure.

[0046] The length of the pipeline needs to be designed according to the welding and assembly requirements to ensure that there are no cracks, creases or coating peeling.

[0047] The internal exhaust pipe 1 usually uses double-layer rolled welded steel pipe (Bundy pipe) to ensure the reliability of the pipeline, but it has high hardness, is difficult to bend and has a high cost.

[0048] The overall pipeline structure in this embodiment is simple and shorter than conventional ones, thereby reducing bending difficulty and material costs. Through reasonable selection of pipeline inner diameter, length, and materials, effective throttling and pressure reduction are achieved, while simultaneously reducing manufacturing costs and improving product reliability and ease of use.

[0049] Of course, in other embodiments, the inner diameter of the first pipe 11 may be less than or equal to the inner diameter of the second pipe 12, depending on the actual situation.

[0050] In one embodiment, please refer to Figure 2 The aforementioned silencing box 2 includes a box body; the silencing structure includes a first baffle plate 23 and a second baffle plate 24, and a silencing cavity is provided inside the box body; the first baffle plate 23 and the second baffle plate 24 are built into the silencing cavity.

[0051] The combination of baffles and a silencing cavity effectively reduces the noise during compressor operation. Specifically, the gas discharged from the compressor first enters the silencing box 2 and then enters the silencing cavity through the air inlet 25. Inside the silencing cavity, the airflow encounters the first baffle 23 and the second baffle 24, which change the direction and speed of the airflow, causing it to follow a more complex path. Due to the change in airflow direction and the reduction in speed, the propagation of sound waves is suppressed, thereby reducing noise. The design of the silencing cavity allows the gas to diffuse within a larger space, further reducing the intensity of impact noise.

[0052] The design of the silencer box 2 is relatively simple, easy to manufacture and install, and has low maintenance costs; the configuration of the baffle plate promotes the smooth flow of air along the designed trajectory, which helps to improve the overall system efficiency.

[0053] In one embodiment, please refer to Figures 3 to 5 The box body includes a first box body 21 and a second box body 22. The first box body 21 has an opening on one side, and the second box body 22 has an opening on one side. The opening side of the first box body 21 and the opening side of the second box body 22 are connected by a detachable structure. The first box body 21 has a first air inlet 211 and a first air outlet 212. The second box body 22 has a second air inlet 221 and a second air outlet 222. The first air inlet 211 and the second air inlet 221 enclose to form an air inlet 25. The first air outlet 212 and the second air outlet 222 enclose to form an air outlet 26.

[0054] In this embodiment, the detachable structure includes a protruding rib on the first housing 21 and a groove on the second housing 22, with the protruding rib and the groove covering each other; of course, in other embodiments, the detachable structure includes a protruding rib on the second housing 22 and a groove on the first housing 21, with the protruding rib and the groove covering each other.

[0055] In one embodiment, please refer to Figure 1 The box is U-shaped.

[0056] In one embodiment, please refer to Figure 1 The box body includes an arc-shaped section and two vertical sections. The two vertical sections are respectively connected to the two ends of the arc-shaped section. The air inlet 25 is located on one of the vertical sections, and the air outlet 26 is located on the other vertical section. The first baffle 23 is installed in the vertical section with the air inlet 25, and the second baffle 24 is installed in the vertical section with the air outlet 26.

[0057] In this embodiment, the first box 21 and the second box 22 are both U-shaped. The U-shaped box, composed of the first box 21 and the second box 22, has openings to facilitate airflow. The first box 21 and the second box 22 are connected by a detachable structure, making the entire device easy to install and maintain. Airflow converges through the first air inlet 211 and the second air inlet 221 to form an air inlet 25, from which the airflow enters the silencer box 2. The first baffle 23 is located within the vertical section of the air inlet 25. When the airflow passes through the baffle, it is affected by the baffle, changing its direction and reducing its speed. The second baffle 24 is installed within the vertical section of the air outlet 26 to further suppress the propagation of sound waves and reduce noise. The airflow processed by the baffle converges through the first air outlet 212 and the second air outlet 222 to form an air outlet 26, which is ultimately discharged from the silencer box 2.

[0058] The baffle plate effectively changes the airflow path and reduces the airflow impact force, thereby significantly reducing the noise generated during operation; the U-shaped structure design makes the airflow smoother in the silencer box 2, improving the overall efficiency of the system and ensuring the stable operation of the equipment; the position of the baffle plate can be adjusted or different types of boxes can be replaced as needed to adapt to the needs of different working environments.

[0059] In another embodiment, the silencer box 2 can be designed in various shapes according to actual application requirements, such as a square tube structure, which can be easily installed in a limited space while providing good strength and stability. Alternatively, it can be designed in a more complex shape, such as M, V, or W, depending on the needs. This roundabout design helps to extend the airflow path, thereby further reducing noise.

[0060] When designed in a square tube shape, vertical and horizontal baffles can be installed inside the tube to create multiple airflow channels. This design effectively changes the airflow direction and reduces noise. The baffles can be arranged in a staggered pattern, causing the airflow to refract repeatedly between multiple baffles. This design increases the airflow path, thereby improving the noise reduction effect. Dividing the square tube into several sections, with a set of baffles in each section, allows for a step-by-step reduction of airflow velocity, effectively reducing noise.

[0061] When designed in a meandering shape, baffles are installed at the bends to guide the airflow smoothly and reduce noise caused by sharp turns. The baffles can be tilted at an angle according to the direction of airflow to optimize airflow distribution and reduce eddies. At each node or bend of the meander, multiple baffles can be installed to allow the airflow to change direction continuously between multiple baffles, thereby achieving a better noise reduction effect.

[0062] In summary, the various shapes of the silencer box 2 and the design of the baffles not only effectively suppress noise but also enhance its overall functionality and applicability.

[0063] In one embodiment, please refer to Figure 6 and Figure 7 The first baffle plate 23 mentioned above includes a first baffle plate 231 and a first spiral plate 232. The first baffle plate 231 is connected above the first spiral plate 232, and the first spiral plate 232 spirals counterclockwise in a downward direction. One side of the first baffle plate 231 abuts against the air inlet 25.

[0064] In one embodiment, please refer to Figure 6 and Figure 7 The first spiral plate 232 mentioned above is provided with several oil leakage holes 233.

[0065] In one embodiment, please refer to Figure 3 The aforementioned second baffle plate 24 includes a second baffle plate 241 and a second spiral plate 242. The second baffle plate 241 is connected above the second spiral plate 242, and the second spiral plate 242 spirals clockwise in an upward direction. The two sides of the second baffle plate 241 abut against the air outlet 26.

[0066] In one embodiment, please refer to Figure 3 The second spiral plate 242 mentioned above is provided with several oil leakage holes 233.

[0067] When the airflow passes through the inlet 25, it first encounters the first baffle 231 and is guided downwards, flowing along the spiral shape of the first spiral plate 232. When the airflow passes through the second baffle 24, it is guided upwards along the path of the second spiral plate 242 and is then guided by the second baffle 241 to be output from the outlet 26. Each spiral plate is provided with several oil leakage holes 233, which can effectively discharge excess oil and allow it to settle at the bottom of the silencer box 2, ensuring the stability and efficiency of the system operation.

[0068] The two baffles are at an angle of 180°, which allows the airflow to be effectively guided and diffused inside the muffler box 2. The airflow is guided from the inlet 25 to the outlet 26. Specifically, the first baffle 231 blocks the diffusion of the airflow entering along the inlet 25 of the muffler box 2, causing it to spiral downward along the first spiral plate 232, while the second baffle 241 blocks the diffusion of the airflow spiraling upward along the second spiral plate 242, causing it to flow out along the outlet 26 of the muffler box 2.

[0069] In one embodiment, the box body is a sheet metal part and the baffle is cold-rolled steel.

[0070] The baffle design reduces airflow turbulence and impact by altering the airflow path, effectively lowering noise. The spiral shape design allows for smoother airflow, reducing airflow resistance and improving overall system efficiency. The oil drain hole 233 allows excess oil to drain, preventing excessive oil from negatively impacting system performance and maintaining normal equipment operation. The use of sheet metal and cold-rolled steel makes the silencer box 2 more robust and durable, capable of withstanding high operating pressures and loads.

[0071] Please see Figure 8 and Figure 9 The working process of the internal exhaust pipe assembly for the compressor in this embodiment is as follows:

[0072] During the operation of the piston compressor, after the cylinder completes the compression of the refrigerant, the compressed gas enters the cylinder seat silencer chamber 3, initially achieving a noise reduction effect. Subsequently, the gas flows to the internal exhaust pipe assembly, where, through the principle of reactive silencing, the sound energy is effectively attenuated by the sound reflection caused by the change in the cross-sectional area of ​​the pipe, thereby achieving a noise reduction effect.

[0073] The airflow passes through the first pipe 11 of the inner exhaust pipe 1 and enters through the air inlet 25 of the muffler box 2. At this time, guided by the first baffle 23, the airflow flows in a counterclockwise spiral direction to the bottom. Then, guided by the second baffle 24, the airflow rises in a clockwise spiral direction and finally reaches the air outlet 26 of the muffler box 2. Then, it flows out of the compressor housing along the second pipe 12 of the inner exhaust pipe 1 and the compressor exhaust pipe 4 and enters the refrigeration system.

[0074] During this process, the airflow directions of the first baffle 23 and the second baffle 24 are exactly opposite. This design effectively increases the exhaust path and further reduces airflow pulsation. In addition, the micropores on the first spiral plate 232 and the second spiral plate 242 can leak refrigerant oil downwards, so that the refrigerant oil entrained in the airflow is concentrated and stored at the bottom of the silencer box 2, preventing it from entering the system with the airflow and preventing the heat exchange effect and system performance from being affected.

[0075] The internal exhaust pipe assembly no longer bears airflow pressure in a single direction, and the force direction of the pipe is consistent with the reciprocating motion direction of the compressor. This reduces the vibration of the exhaust pipe to a certain extent and improves the noise and vibration of the compressor. The muffler box 2 is placed vertically on the side of the compressor core, providing relatively ample space. The internal exhaust pipe 1, cylinder seat muffler chamber 3, muffler box 2, and compressor exhaust pipe 4 are all fixed by welding. It is necessary to ensure that a safe distance is maintained between the entire internal exhaust pipe assembly and the compressor core and housing, generally not less than 3mm.

[0076] In summary, the internal exhaust pipe assembly of this embodiment helps to reduce compressor airflow pulsation, improve the overall noise reduction and vibration damping effect, thereby improving the user's hearing and experience, while also having certain cost advantages; it improves the compressor's vibration and noise characteristics; the internal exhaust pipe assembly significantly reduces the amount of piping used, further controlling the compressor cost; at the same time, the exhaust pipe no longer continuously bears the force of airflow in a single direction, and the force on the pipe is consistent with the reciprocating motion direction of the compressor, reducing the vibration of the exhaust pipe and improving compressor noise and vibration.

[0077] The aforementioned internal exhaust pipe assembly for a compressor comprises an internal exhaust pipe 1 and a muffler box 2, the muffler box 2 having an air inlet 25 and an air outlet 26; the internal exhaust pipe 1 consists of a first pipe 11 and a second pipe 12, which are respectively connected to the cylinder seat muffler chamber 3 and the compressor exhaust pipe 4; the muffler box 2 has a muffler structure inside to reduce noise; thereby improving the noise and vibration performance of the compressor during operation, and thus enhancing the overall performance and reliability of the compressor.

[0078] In one embodiment, the above-described method of operation performed by the internal exhaust pipe assembly for the compressor includes:

[0079] The compressed gas first enters the cylinder seat muffler chamber 3, and then enters the muffler box 2 from the air inlet 25 through the first pipeline 11.

[0080] The first baffle 23 and the second baffle 24 inside the muffler box 2 guide the flow direction and concentrate the entrained refrigeration oil at the bottom of the muffler box 2.

[0081] After the gas is output from the outlet 26 of the silencer box 2, it enters the compressor exhaust pipe 4 through the second pipeline 12.

[0082] It should be noted that those skilled in the art will clearly understand that the specific implementation process of the working method performed by the above-mentioned internal exhaust pipe assembly for the compressor can be referred to the corresponding description in the aforementioned embodiments of the internal exhaust pipe assembly. For the sake of convenience and brevity, it will not be repeated here.

[0083] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An internal exhaust pipe assembly for a compressor, characterized in that, include: The internal exhaust pipe and the muffler box are provided with an air inlet and an air outlet. The internal exhaust pipe includes a first pipe and a second pipe. The first pipe is connected to the cylinder block muffler chamber and the air inlet, respectively. The second pipeline is connected to the compressor exhaust pipe and the air outlet respectively, and the silencer box is equipped with a silencer structure; The silencing box includes a box body, and the silencing structure includes a first baffle plate and a second baffle plate. The box body is provided with a silencing cavity; the first baffle plate and the second baffle plate are built into the silencing cavity. The first baffle plate includes a first baffle plate and a first spiral plate. The first baffle plate is connected above the first spiral plate, and the first spiral plate spirals counterclockwise in a downward direction. One side of the first baffle plate abuts against the air inlet. The second baffle plate includes a second baffle plate and a second spiral plate. The second baffle plate is connected above the second spiral plate, and the second spiral plate spirals clockwise in an upward direction. The two sides of the second baffle plate abut against the air outlet. The box body is U-shaped; The first spiral plate has several oil leakage holes; the second spiral plate has several oil leakage holes. The box body includes an arc-shaped section and two vertical sections, which are respectively connected to the two ends of the arc-shaped section; the air inlet is located on one of the vertical sections, and the air outlet is located on the other vertical section; the first baffle is installed in the vertical section with the air inlet, and the second baffle is installed in the vertical section with the air outlet.

2. The internal exhaust pipe assembly for a compressor according to claim 1, characterized in that, The box body includes a first box body and a second box body. The first box body has an opening on one side, and the second box body has an opening on one side. The side of the first box body with the opening and the side of the second box body with the opening are connected by a detachable structure. The first box body has a first air inlet and a first air outlet. The second box body has a second air inlet and a second air outlet. The first air inlet and the second air inlet together form the air inlet. The first air outlet and the second air outlet together form the air outlet.

3. A method of operation performed by the internal exhaust pipe assembly for a compressor according to any one of claims 1 to 2, characterized in that, include: The compressed gas first enters the cylinder block muffler chamber, and then enters the muffler box through the first pipeline from the air inlet; The first and second baffles inside the muffler box guide the flow direction and concentrate the entrained refrigerant oil at the bottom of the muffler box. After the gas is output from the outlet of the silencer box, it enters the compressor exhaust pipe through the second pipeline.

Images