Exhaust pipe assembly, compressor and refrigeration equipment

Abstract

The utility model discloses an exhaust pipe assembly, a compressor and refrigeration equipment, and relates to the technical field of compound compressors, the exhaust pipe assembly comprises a cover body, an exhaust pipe and a silencing part, the cover body is used for covering an opening of a high-pressure cavity of a crankcase, and the cover body is provided with an exhaust port and a communication port; the exhaust pipe is communicated with the exhaust port; the silencing part is provided with a silencing cavity communicating with the communicating opening. The noise reduction part is arranged on the cover body covering the opening of the high-pressure cavity of the crankcase, the influence on the performance of the compressor is small, the noise reduction cavity is formed in the noise reduction part, part of sound waves enter the noise reduction cavity from the high-pressure cavity and then are reflected back through the closed end of the noise reduction part, the sound waves with the same frequency and opposite phases are counteracted, and therefore noise reduction is achieved; the problem that the performance of the compressor is affected when the compressor is subjected to noise reduction is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating compressors, and particularly to an exhaust pipe assembly, a compressor and a refrigeration device. Background Art

[0002] As a household appliance essential in daily life, people have higher and higher requirements for the performance of refrigerators. In addition to the important freezing capacity, the comfort of the refrigerator is also one of the key indicators. The noise value, as an important measurement parameter for comfort, has also attracted much attention.

[0003] The compressed refrigerant flows through the inner exhaust pipe through the high-pressure chamber, during which pneumatic noise will be generated or pressure pulsation will be caused. The commonly used noise reduction method is to use an intake muffler. Generally, the noise reduction ability of the intake muffler of a reciprocating compressor and the overall performance of the compressor are a pair of contradictory points. Usually, the muffler will increase the resistance of the intake path, resulting in the compressor needing a greater negative pressure to inhale gas. The additional resistance will reduce the intake volume of the compressor, thereby affecting its working efficiency and output power. Therefore, the stronger the noise reduction ability of the muffler, the worse the performance of the compressor. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose an exhaust pipe assembly, a compressor and a refrigeration device, aiming to solve the problem of affecting the performance of the compressor when muffling the compressor.

[0005] To achieve the above object, the exhaust pipe assembly proposed by the utility model includes:

[0006] A cover body for covering the opening of the high-pressure chamber of the crankcase, and an exhaust port and a communication port are provided on the cover body;

[0007] An exhaust pipe communicated with the exhaust port; and,

[0008] A muffling part installed on the cover body, and the muffling part has a muffling cavity communicated with the communication port.

[0009] In an embodiment, the muffling part includes a muffling pipe, one end of the muffling pipe is communicated with the communication port, and the other end is closed.

[0010] In an embodiment, the muffling pipe includes a quarter-wavelength pipe.

[0011] In an embodiment, the muffling pipe includes a plurality of pipe segments, the plurality of pipe segments are arranged side by side, and two adjacent pipe segments are connected end to end; or,

[0012] The muffling pipe is arranged in parallel with the exhaust pipe; or,

[0013] The muffling pipe is spirally extended.

[0014] In one embodiment, the cross-section of the inner cavity of the silencing pipe is circular, polygonal or irregular.

[0015] In one embodiment, the silencing part includes a first silencing pipe section, a second silencing pipe section, and an outward expanding pipe section disposed between the first silencing pipe section and the second silencing pipe section. One end of the first silencing pipe section away from the outward expanding pipe section is communicatively connected to the communication port, and one end of the second silencing pipe section away from the outward expanding pipe section is closed. Wherein, the inner diameter of the outward expanding pipe section is greater than the inner diameters of the first silencing pipe section and the second silencing pipe section.

[0016] In one embodiment, the inner diameter of the outward expanding pipe section is D1, and the inner diameter of the silencing pipe section is D2, where D1 / D2≥1.5.

[0017] In one embodiment, D1 / D2≥3.

[0018] In one embodiment, the silencing part includes a connecting pipe and a silencing shell that are communicatively connected. One end of the connecting pipe away from the silencing shell is communicatively connected to the communication port, and a silencing cavity is formed inside the silencing shell.

[0019] In one embodiment, a plurality of the communication ports are provided on the cover body, and a plurality of the silencing parts are correspondingly provided. Each silencing part is communicatively connected to the corresponding communication port.

[0020] In one embodiment, the material of the silencing part is metal, plastic or composite material.

[0021] The present utility model further provides a compressor, which includes:

[0022] A crankcase having a high-pressure cavity with one end open; and,

[0023] An exhaust pipe assembly, including:

[0024] A cover body for covering the opening, and an exhaust port and a communication port are provided on the cover body;

[0025] An exhaust pipe communicatively connected to the exhaust port; and,

[0026] A silencing part installed on the cover body, and the silencing part has a silencing cavity communicatively connected to the communication port.

[0027] The present utility model further provides a refrigeration device, which includes a compressor, and the compressor includes:

[0028] A crankcase having a high-pressure cavity with one end open; and,

[0029] Exhaust pipe assembly, comprising:

[0030] A cover body for covering the opening, and an exhaust port and a communication port are provided on the cover body;

[0031] An exhaust pipe communicated with the exhaust port; and,

[0032] A silencing part installed on the cover body, and the silencing part has a silencing cavity communicated with the communication port.

[0033] In one embodiment, the refrigeration device includes a refrigerator.

[0034] In the technical solution of the present utility model, the cover body covers the opening of the crankcase high-pressure chamber. By arranging the silencing part on the cover body, the influence on the intake and performance of the compressor is small. A silencing cavity is provided in the silencing part and is communicated with the communication port. Part of the sound waves enter the silencing cavity from the high-pressure chamber and then are reflected back by the closed end of the silencing part to cancel the sound waves with the same frequency and opposite phases, thereby achieving silencing and solving the problem of affecting the performance of the compressor when silencing the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0036] Figure 1 It is a schematic structural diagram of the first embodiment of the exhaust pipe assembly provided by the present utility model;

[0037] Figure 2 It is a schematic structural diagram of the second embodiment of the exhaust pipe assembly provided by the present utility model;

[0038] Figure 3 It is a schematic structural diagram of the third embodiment of the exhaust pipe assembly provided by the present utility model;

[0039] Figure 4 It is a schematic structural diagram of the fourth embodiment of the exhaust pipe assembly provided by the present utility model;

[0040] Figure 5 It is a schematic structural diagram of the fifth embodiment of the exhaust pipe assembly provided by the present utility model.

[0041] Explanation of the reference numerals in the drawings:

[0042] 100. Exhaust pipe assembly; 1. Cover body; 11. Exhaust port; 12. Communication port; 2. Exhaust pipe; 3. Sound absorption part; 31. Sound absorption pipe; 311. Pipe section; 301. First sound absorption pipe section; 302. Second sound absorption pipe section; 303. Outer expansion pipe section; 312. Connecting pipe; 313. Sound absorption shell.

[0043] The realization, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0044] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0045] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0047] The present utility model provides an exhaust pipe assembly, aiming to solve the problem of affecting the performance of the compressor when silencing the compressor.

[0048] Please refer to Figure 1, in an embodiment of the present utility model, the exhaust pipe assembly 100 includes a cover body 1, an exhaust pipe 2, and a silencing portion 3. The cover body 1 is used to cover the opening of the high-pressure chamber of the crankcase. An exhaust port 11 and a communication port 12 are provided on the cover body 1. The exhaust pipe 2 is communicatively connected to the exhaust port 11. The silencing portion 3 is installed on the cover body 1, and the silencing portion 3 has a silencing cavity communicatively connected to the communication port 12.

[0049] It should be noted that the exhaust pipe assembly 100 is composed of three components:

[0050] The cover body 1: is used to cover the opening of the high-pressure chamber of the crankcase. An exhaust port 11 and a communication port 12 are provided on the cover body 1. The exhaust port 11 is used to connect to the exhaust pipe 2, and the communication port 12 is used to connect to the silencing cavity of the silencing portion 3.

[0051] The exhaust pipe 2: is communicatively connected to the exhaust port 11 on the cover body 1 and is used to guide the gas discharged from the compression cylinder to the outside or subsequent processing equipment. One end of it is connected to the exhaust port 11 of the cover body 1, and the other end is connected to other components according to actual application requirements.

[0052] The silencing portion 3: is installed on the cover body 1 and is used to reduce the noise generated during the exhaust process. The silencing portion 3 has a silencing cavity communicatively connected to the communication port 12 on the cover body 1 to form a closed silencing cavity.

[0053] The cover body 1 is tightly connected to the crankcase to form a high-pressure chamber. The high-pressure chamber is communicatively connected to the air outlet of the compressor and is used to temporarily store and stabilize the compressed gas. The gas discharged from the compressor first enters the high-pressure chamber. Part of the gas enters the exhaust pipe 2 through the exhaust port 11 on the cover body 1 and is finally discharged to the outside or subsequent processing equipment. Another part of the gas enters the silencing cavity of the silencing portion 3 through the communication port 12 on the cover body 1.

[0054] It should also be noted that if the silencer is set at the intake end of the compressor, the silencer usually increases the resistance of the intake path, resulting in the compressor needing a greater negative pressure to inhale gas. The additional resistance reduces the intake air volume of the compressor, thereby affecting its working efficiency and output power. The internal structure of the silencer (such as sound-absorbing materials, reflector plates, etc.) may cause uneven distribution of the air flow, resulting in fluctuations in the intake air flow. The flow fluctuations will affect the stable operation of the compressor and may lead to an increase in vibration and noise. Therefore, the stronger the sound-absorbing ability of the silencer, usually the more complex its internal structure and the greater the resistance. Therefore, the stronger the sound-absorbing ability, the greater the intake resistance, and the more obvious the performance degradation of the compressor.

[0055] In this embodiment, the muffler 3 is arranged at the crankcase at the exhaust end of the compression cylinder. The muffler 3 will also increase the resistance of the exhaust path. However, since the compression cylinder has completed the compression process of the gas and discharges high-pressure gas, it is less sensitive to the exhaust resistance. The muffler 3 at the exhaust end may also cause uneven distribution of the airflow, but such fluctuations usually do not significantly affect the stability of the compressor. And the muffler 3 at the exhaust end has little effect on the response time of the compressor because the main dynamic response occurs at the intake end. Therefore, although the muffler 3 at the exhaust end will also increase some resistance, since the compressor has completed the compression process, the effect of such resistance on the performance of the compressor is relatively small. Therefore, the muffler 3 at the exhaust end has little effect on the overall performance of the compressor.

[0056] It is understandable that the silencing cavity in the silencing portion 3 is designed to be of a specific shape and size, and factors such as sealing, materials, structural strength, fluid dynamics and silencing effect need to be considered, and the noise is reduced by using mechanisms such as reflection, interference and absorption of sound waves. The end of the silencing portion 3 that is away from the cover body 1 is closed to form a closed silencing cavity, which further enhances the silencing effect.

[0057] The silencer 3 can be configured as a silencer tube 31, an expansion chamber silencer, a Helmholtz resonator, etc. Of course, the silencer 3 is not limited to the above examples. Technical personnel in the relevant field may make other changes under the inspiration of the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same or similar to those of the embodiments of this specification, they should be covered within the protection scope of the embodiments of this specification.

[0058] In the technical solution of the utility model, the cover body 1 is arranged at the opening of the high-pressure chamber of the crankcase. By arranging the silencer 3 on the cover body 1, the air intake and performance of the compressor are not greatly affected. A silencer chamber is arranged in the silencer 3, and is connected with the connecting port 12. Part of the sound waves enter the silencer chamber from the high-pressure chamber, and then are reflected back through the closed end of the silencer 3 to offset the sound waves with the same frequency and opposite phase, thereby achieving silence, so as to solve the problem of affecting the performance of the compressor when silencing the compressor.

[0059] Specifically, in this embodiment, the muffler 3 includes a muffler pipe 31, one end of which is connected to the communication port 12, and the other end of which is closed. The inner cavity of the muffler pipe 31 forms the muffler cavity.

[0060] Specifically, see Figure 1, in the first embodiment, the silencing tube 31 includes a quarter-wavelength tube. When the length of the tube is equal to one-quarter of the wavelength of the noise frequency, the sound wave inside the tube will form a pressure node at the closed end and a pressure antinode at the open end. This configuration causes the sound wave inside the tube to resonate with the external sound wave, thereby forming a strong sound pressure gradient at the tube orifice, resulting in energy dissipation.

[0061] It should be noted that the transmission loss of the quarter-wavelength tube can be expressed as:

[0062]

[0063] where L is the length of the quarter-wavelength tube, and R is the ratio of the cross-sectional area of the wavelength tube to the cross-sectional area of the main pipeline. When TL reaches its maximum, the length of the silencing part is:

[0064] Therefore, the length of the silencing tube 31 should be one-quarter or an integer multiple of the wavelength of the required noise reduction frequency.

[0065] Of course, according to the above silencing principle, the silencing tube 31 can also be of other lengths, such as:

[0066] A half-wavelength tube, whose length is usually half of the wavelength of the target noise frequency. When the length of the tube is equal to half of the wavelength of the noise frequency, the sound wave inside the tube will form pressure nodes at both ends. This configuration will also produce a resonance effect, but at different positions.

[0067] A four-thirds-wavelength tube, whose length is usually four-thirds of the wavelength of the target noise frequency. When the length of the tube is equal to four-thirds of the wavelength of the noise frequency, the sound wave inside the tube will form a pressure node at one end and a pressure antinode at the other end. This configuration will also produce a resonance effect, but its effect is not as significant as that of the quarter-wavelength tube.

[0068] A tube of any length, not necessarily a multiple of a specific wavelength. For a tube of any length, the silencing effect can be achieved by adjusting the shape of the tube, internal structure (such as perforated plates, expansion chambers, etc.) and other acoustic elements. These designs can utilize various mechanisms such as reflection, interference, and absorption to reduce noise.

[0069] Of course, the silencing tube 31 is not limited to the above examples. Those skilled in the art may make other changes under the inspiration of the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same as or similar to those of the embodiments of this specification, they should be covered within the protection scope of the embodiments of this specification.

[0070] Furthermore, please refer to Figure 2, in the second embodiment, the muffler pipe 31 includes a plurality of pipe segments 311 which are arranged in parallel, and two adjacent pipe segments 311 are connected end to end.

[0071] The muffler pipe 31 is composed of a plurality of independent pipe segments 311 which are arranged in parallel, that is, they are arranged parallel to each other in space. Two adjacent pipe segments 311 are connected end to end. One end of each pipe segment 311 is connected to the end of the previous pipe segment 311, and the other end is connected to the front end of the next pipe segment 311, forming a continuous pipeline system.

[0072] It should be noted that the sound absorption effect of the muffler pipe 31 is only related to the length and cross-sectional area of the wavelength pipe. That is, the length of the muffler pipe 31 should be as long as possible, and the greater the transmission loss.

[0073] However, the longer the length of the muffler pipe 31, the larger the space span occupied. Therefore, the muffler pipe 31 is arranged to be bent along a zigzag route, thereby reducing the occupied space.

[0074] It should also be noted that by using a plurality of pipe segments 311 with different lengths, noise can be eliminated for different noise frequencies. The length of each pipe segment 311 can be designed to be a quarter wavelength corresponding to a specific frequency. This design enables the entire system to simultaneously process noise in multiple frequency ranges, thereby achieving a wider bandwidth of sound absorption effect.

[0075] The working principle of each pipe segment 311 is the same as that of a traditional single muffler pipe 31. When sound waves enter the pipe segment 311, a pressure node is formed at the closed end and a pressure antinode is formed at the open end. When the length of the pipe segment 311 is equal to a quarter wavelength of the target noise frequency, a strong sound pressure gradient will be generated at the pipe orifice, resulting in energy dissipation.

[0076] By arranging a plurality of pipe segments 311 in parallel and connecting them end to end, a resonance effect can be formed at multiple positions, further enhancing the energy dissipation.

[0077] In some other embodiments, the muffler pipe 31 can also be arranged in parallel with the exhaust pipe 2. Since the extension path of the exhaust pipe 2 is the space that must be occupied, the muffler pipe 31 is also extended synchronously along the extension direction of the exhaust pipe 2, which is equivalent to only slightly increasing the diameter of the exhaust pipe 2 and will not have too much impact on the space occupation.

[0078] In some other embodiments, the muffler pipe 31 is sequentially wound around in the radial direction along a circumferential direction. In this way, by coiling the muffler pipe 31, the purpose of reducing the occupied space can also be achieved.

[0079] Specifically, in this embodiment, the cross-section of the sound-absorbing pipe 31 is set to be circular, polygonal or irregular.

[0080] It should be noted that the circular cross-section is the most common cross-section shape of the wavelength pipe. It has good hydrodynamic characteristics, less resistance, relatively simple manufacturing, and low cost. At the resonance frequency, the wavelength pipe with a circular cross-section can effectively absorb noise of specific frequencies. Due to its symmetry, the acoustic performance of the circular cross-section is relatively uniform in all directions.

[0081] The polygonal cross-section can generally be set to a square, hexagon, etc.

[0082] The square cross-section may be more convenient for manufacturing and installation, especially in cases where space is limited. It can make more effective use of space.

[0083] The hexagonal cross-section is between the circular and square cross-sections, combining the advantages of both. It provides good hydrodynamic characteristics and high structural strength. The hexagonal cross-section can reduce the influence of higher harmonics to a certain extent.

[0084] The irregular cross-section can be set to a serrated cross-section to improve the sound absorption effect by increasing the surface roughness. The serrated cross-section is usually used in cases where it is necessary to further increase the surface area or change the air flow path. The serrated cross-section can provide more surface area, thereby increasing the acting area of the sound-absorbing material. By changing the air flow path, the noise can be further reduced.

[0085] Specifically, please refer to Figure 3 , in the third embodiment, the sound-absorbing part 3 includes a first sound-absorbing pipe section 301, a second sound-absorbing pipe section 302, and an outward-expanded pipe section 303 arranged between the first sound-absorbing pipe section 301 and the second sound-absorbing pipe section 302. One end of the first sound-absorbing pipe section 301 far from the outward-expanded pipe section 303 is communicatively connected to the communication port 12, and one end of the second sound-absorbing pipe section 302 far from the outward-expanded pipe section 303 is closed. Wherein, the inner diameter of the outward-expanded pipe section 303 is larger than the inner diameters of the first sound-absorbing pipe section 301 and the second sound-absorbing pipe section 302.

[0086] The sound-absorbing pipe 31 is composed of two sound-absorbing pipe 31 sections and one outward-expanded pipe section 303. An outward-expanded pipe section 303 is arranged between the two sound-absorbing pipe 31 sections. The inner diameter of the outward-expanded pipe section 303 is larger than the inner diameter of the sound-absorbing pipe 31 section. In this way, the sound-absorbing part 3 forms an expansion chamber muffler.

[0087] It should be noted that when sound waves enter the first sound-absorbing pipe section 301 from the communication port 12, due to the relatively small cross-sectional area of the sound-absorbing pipe 31 section, the sound waves will propagate within the sound-absorbing pipe 31 section. When the sound waves reach the outer expansion pipe section 303, due to the relatively large inner diameter of the outer expansion pipe section 303, the sound waves will be reflected. Part of the sound waves will be reflected back to the first sound-absorbing pipe 31 section, and the other part will continue to propagate to the second sound-absorbing pipe section 302. The reflected sound waves interfere with the incident sound waves to form standing waves. This interference effect can effectively dissipate the energy of the sound waves, thereby reducing noise. The presence of the outer expansion pipe section 303 increases the complexity of the sound wave path, further enhancing the interference effect.

[0088] Further, in this embodiment, the inner diameter of the outer expansion pipe section 303 is D1, and the inner diameter of the sound-absorbing pipe 31 section is D2, where D1 / D2 ≥ 1.5.

[0089] It can be understood that when sound waves enter a large cross-section from a small cross-section, due to the sudden increase in the cross-sectional area, part of the sound waves will be reflected at the cross-section change. A larger cross-section ratio can enhance this reflection effect, thereby improving the sound absorption effect.

[0090] The reflected sound waves will interfere with the incident sound waves to form standing waves. A larger cross-section ratio helps to form more obvious standing waves, thereby better dissipating the energy of the sound waves.

[0091] Setting D1 / D2 ≥ 1.5 can improve the sound absorption effect of low-frequency noise. Low-frequency noise requires a larger space for effective reflection and interference, so a larger cross-section ratio is particularly important for the control of low-frequency noise.

[0092] Further, in this embodiment, D1 / D2 ≥ 3. Based on experience and theoretical calculations, when the ratio of the inner diameter of the outer expansion pipe section 303 to the inner diameter of the sound-absorbing pipe 31 section is greater than or equal to 3, a good sound absorption effect can be ensured within a wide frequency band range.

[0093] Please refer to Figure 4 , in the fourth embodiment, the sound-absorbing part 3 includes a connecting pipe 312 and a sound-absorbing shell 313 that are connected and arranged. One end of the connecting pipe 312 facing away from the sound-absorbing shell 313 is connected to the communication port 12, and a sound-absorbing cavity is formed inside the sound-absorbing shell 313.

[0094] The sound-absorbing part 3 is composed of a connecting pipe 312 and a sound-absorbing shell 313 to form a Helmholtz resonator. The connecting pipe 312 is used to guide gas from the communication port 12 to the sound-absorbing shell 313. The sound-absorbing shell 313 is the main part of the sound-absorbing part 3, and a sound-absorbing cavity is formed inside. The sound-absorbing cavity inside the sound-absorbing shell 313 is used to absorb and dissipate the energy of the sound waves, thereby reducing noise.

[0095] Its noise elimination principle is as follows: The gas discharged from the crankcase enters the connecting pipe 312 through the communication port 12 on the cover body 1. The connecting pipe 312 guides the gas to the muffler housing 313. After the gas enters the muffler housing 313, the absorption and dissipation of sound waves occur in the muffler cavity. Since the muffler cavity in the muffler housing 313 usually has a relatively large volume, when sound waves enter the muffler cavity, multiple reflections will occur in the cavity. These reflected sound waves interfere with the incident sound waves to form standing waves, thereby dissipating the energy of the sound waves.

[0096] It should be noted that the design of the muffler cavity can utilize the resonance effect to optimize the noise within a specific frequency range. By adjusting the size and shape of the muffler cavity, sound waves of certain frequencies can resonate in the cavity and be effectively absorbed.

[0097] Furthermore, if broadband noise needs to be processed, multiple different muffler cavities can be arranged in the muffler housing 313 or a multi-stage noise elimination structure can be adopted to cover a wider frequency range.

[0098] Furthermore, please refer to Figure 5 In the fifth embodiment, a plurality of the communication ports 12 are provided on the cover body 1, and a plurality of corresponding muffler parts 3 are provided. Each muffler part 3 is communicated with the corresponding communication port 12.

[0099] By providing a plurality of the communication ports 12 on the cover body 1 and equipping each communication port 12 with an independent muffler part 3, more precise control of noise in different frequency ranges or at different positions can be achieved.

[0100] Specifically, each muffler part 3 can be set as a noise elimination structure with the same noise elimination principle. For example, they can all be set as muffler pipes 31.

[0101] The lengths of the muffler pipes 31 can be the same or all different. By setting muffler pipes 31 with different lengths, noise elimination can be performed for different frequency ranges, thereby achieving broadband noise reduction.

[0102] Each muffler pipe 31 can be optimized according to the actual noise characteristics and frequency distribution to ensure the best noise elimination effect within each frequency range.

[0103] A plurality of the muffler parts 3 can be set as noise elimination structures with different noise elimination principles. For example, one of the muffler parts 3 is set as a muffler pipe 31, one is set as an expansion chamber muffler structure, and one is set as a Helmholtz resonator structure.

[0104] In this way, each of the muffling parts 3 can be optimized according to specific noise characteristics, providing higher flexibility. The number, length, and internal structure of the bypass pipes can be adjusted according to specific application requirements to adapt to different noise environments, thereby improving the overall muffling effect.

[0105] Furthermore, since the muffling part 3 is arranged on the exhaust side of the compression cylinder and the exhaust temperature is relatively high, the sound-absorbing materials and structures inside the muffling part 3 may be more easily affected. Therefore, in this embodiment, the material of the muffling part 3 is metal, plastic, or composite material.

[0106] Since metal, plastic, or composite materials have higher durability and meet the hard sound field boundary for sound waves, preventing sound waves from penetrating or generating unnecessary vibrations on the pipe wall. When the muffling part 3 is set as a piece of material, the muffling part 3 is welded to the cover body 1 to ensure the firmness of the connection.

[0107] The present invention also provides a compressor, which includes a crankcase and an exhaust pipe assembly 100. The cover body 1 covers the opening of the high-pressure chamber of the crankcase. The specific structure of the exhaust pipe assembly 100 refers to the above embodiments. Since this compressor adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0108] The present invention also provides a refrigeration device, which includes a heat exchange system and a compressor. The cover body 1 covers the opening of the high-pressure chamber of the crankcase. The specific structure of the compressor refers to the above embodiments. Since this refrigeration device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0109] Specifically, the refrigeration device includes a refrigerator. As an essential household appliance in daily life, people have higher and higher requirements for its performance. The noise value, as an important measurement parameter for comfort, has also attracted much attention. When the compressor is arranged in the refrigerator, the muffling effect of the compressor is better and it has little impact on the performance of the compressor. Therefore, the noise of the refrigerator is also relatively small.

[0110] The above are only exemplary embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An exhaust pipe assembly, characterized in that, Comprising: A cover body, which is used to cover the opening of the high-pressure chamber of the crankcase, and an exhaust port and a communication port are provided on the cover body; An exhaust pipe, which is communicated with the exhaust port; And A silencing part, which is installed on the cover body, and the silencing part has a silencing cavity communicated with the communication port.

2. The exhaust pipe assembly according to claim 1, wherein The silencing part includes a silencing pipe, one end of the silencing pipe is communicated with the communication port, and the other end is closed.

3. The exhaust pipe assembly according to claim 2, characterized in that, The silencing pipe includes a quarter-wavelength pipe.

4. The exhaust pipe assembly according to claim 2, wherein, The silencing pipe includes a plurality of pipe segments, the plurality of pipe segments are arranged side by side, and two adjacent pipe segments are connected end to end; or The silencing pipe is arranged in parallel with the exhaust pipe; or The silencing pipe is arranged in a spiral extension.

5. The exhaust pipe assembly according to claim 2, wherein, The cross-section of the inner cavity of the silencing pipe is set to be circular, polygonal or irregular.

6. The exhaust pipe assembly according to claim 1, characterized in that, The silencing part includes a first silencing pipe segment, a second silencing pipe segment, and an outward-expanding pipe segment arranged between the first silencing pipe segment and the second silencing pipe segment. One end of the first silencing pipe segment far away from the outward-expanding pipe segment is communicated with the communication port, and one end of the second silencing pipe segment far away from the outward-expanding pipe segment is closed. Wherein, the inner diameter of the outward-expanding pipe segment is larger than the inner diameters of the first silencing pipe segment and the second silencing pipe segment.

7. The exhaust pipe assembly according to claim 6, characterized in that, The inner diameter of the outward-expanding pipe segment is D1, and the inner diameter of the silencing pipe segment is D2, wherein D1 / D2≥1.

5.

8. The exhaust pipe assembly according to claim 7, wherein D1 / D2≥3.

9. The exhaust pipe assembly according to claim 1, wherein, The silencing part includes a connecting pipe and a silencing shell which are communicated. One end of the connecting pipe far away from the silencing shell is communicated with the communication port, and the silencing cavity is formed in the silencing shell.

10. The exhaust pipe assembly according to any one of claims 1 to 9, characterized in that, A plurality of the communication ports are provided on the cover body, and a plurality of the silencing parts are correspondingly provided, and each silencing part is communicated with the corresponding communication port.

11. The exhaust pipe assembly according to claim 1, wherein, The material of the silencing part is metal, plastic or composite material.

12. A compressor, characterized in that, Comprising: A crankcase, which has a high-pressure chamber with one end open; and An exhaust pipe assembly according to any one of claims 1 to 11, wherein the cover body covers the opening of the high-pressure chamber.

13. A refrigeration device, characterized in that, Including a compressor according to claim 12.

14. The refrigeration device according to claim 13, characterized in that, The refrigeration device includes a refrigerator.

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