Exhaust pipe assembly, compressor and refrigeration equipment

Abstract

The invention 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 an exhaust port and a communication port are formed in the cover body; 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 invention relates to the technical field of reciprocating compressors, and in particular to an exhaust pipe assembly, a compressor and a refrigeration device. Background Art

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

[0003] The compressed refrigerant flows through the inner discharge pipe through the high-pressure chamber, which will generate aerodynamic noise or cause pressure pulsation. The commonly used silencing method is to use a suction muffler. In general, the silencing ability of the suction muffler of a reciprocating compressor and the overall performance of the compressor are a pair of contradictions. Usually, the muffler will increase the resistance of the intake path, causing the compressor to require 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 silencing ability of the muffler, the worse the compressor performance will be. Summary of the invention

[0004] The main purpose of the present invention is to provide an exhaust pipe assembly, a compressor and a refrigeration device, aiming to solve the problem of affecting the performance of the compressor when the compressor is silenced.

[0005] To achieve the above object, the exhaust pipe assembly proposed by the present invention comprises:

[0006] A cover body, used to cover the opening of the high-pressure chamber of the crankcase, and the cover body is provided with an exhaust port and a communication port;

[0007] an exhaust pipe connected to the exhaust port; and

[0008] The muffler is installed on the cover body, and the muffler has a muffler cavity which is connected with the communication port.

[0009] In one embodiment, the muffler portion includes a muffler pipe, one end of the muffler pipe is connected to the communication port, and the other end of the muffler pipe is closed.

[0010] In one embodiment, the muffler tube comprises a quarter-wavelength tube.

[0011] In one embodiment, the muffler pipe comprises a plurality of pipe sections, the plurality of pipe sections are arranged side by side, and two adjacent pipe sections are connected end to end; or,

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

[0013] The silencer pipe is arranged to extend in a spiral shape.

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

[0015] In one embodiment, the silencer portion includes a first silencer pipe segment, a second silencer pipe segment, and an outward expansion pipe segment arranged between the first silencer pipe segment and the second silencer pipe segment, wherein one end of the first silencer pipe segment away from the outward expansion pipe segment is connected to the connecting port, and one end of the second silencer pipe segment away from the outward expansion pipe segment is closed, wherein the inner diameter of the outward expansion pipe segment is larger than the inner diameters of the first silencer pipe segment and the second silencer pipe segment.

[0016] In one embodiment, the inner diameter of the outwardly expanded pipe section is D1, and the inner diameter of the silencer pipe section is D2, wherein D1 / D2≥1.5.

[0017] In one embodiment, D1 / D2≥3.

[0018] In one embodiment, the muffler portion includes a connecting pipe and a muffler shell which are connected to each other, one end of the connecting pipe away from the muffler shell is connected to the connecting port, and the muffler cavity is formed in the muffler shell.

[0019] In one embodiment, the cover body is provided with a plurality of the communication ports, and a plurality of the silencers are correspondingly provided, and each of the silencers is communicated with the corresponding communication port.

[0020] In one embodiment, the sound-absorbing part is made of metal, plastic or composite material.

[0021] The present invention further provides a compressor, comprising:

[0022] A crankcase having a high pressure chamber with an open end; and

[0023] Exhaust pipe assembly, including:

[0024] A cover body, used to cover the opening, and the cover body is provided with an exhaust port and a communication port;

[0025] an exhaust pipe connected to the exhaust port; and

[0026] The muffler is installed on the cover body, and the muffler has a muffler cavity which is connected with the communication port.

[0027] The present invention further provides a refrigeration device, the refrigeration device comprising a compressor, the compressor comprising:

[0028] A crankcase having a high pressure chamber with an open end; and

[0029] Exhaust pipe assembly, including:

[0030] A cover body, used to cover the opening, and the cover body is provided with an exhaust port and a communication port;

[0031] an exhaust pipe connected to the exhaust port; and

[0032] The muffler is installed on the cover body, and the muffler has a muffler cavity which is connected with the communication port.

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

[0034] In the technical solution of the present invention, the cover body is arranged at the opening of the high-pressure chamber of the crankcase. By arranging the silencer on the cover body, the air intake and performance of the compressor are not greatly affected. A silencer chamber is arranged in the silencer and is connected to the connecting port. Part of the sound waves enter the silencer chamber from the high-pressure chamber and are then reflected back through the closed end of the silencer 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0036] Figure 1 A schematic structural diagram of a first embodiment of an exhaust pipe assembly provided by the present invention;

[0037] Figure 2 A schematic structural diagram of a second embodiment of an exhaust pipe assembly provided by the present invention;

[0038] Figure 3 A schematic structural diagram of a third embodiment of an exhaust pipe assembly provided by the present invention;

[0039] Figure 4 A schematic structural diagram of a fourth embodiment of an exhaust pipe assembly provided by the present invention;

[0040] Figure 5 This is a schematic structural diagram of a fifth embodiment of an exhaust pipe assembly provided by the present invention.

[0041] Description of Figure Numbers:

[0042] 100. Exhaust pipe assembly; 1. Cover; 11. Exhaust port; 12. Connecting port; 2. Exhaust pipe; 3. Silencer; 31. Silencer pipe; 311. Pipe section; 301. First silencer pipe section; 302. Second silencer pipe section; 303. Outward expansion pipe section; 312. Connecting pipe; 313. Silencer shell.

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] The present invention provides an exhaust pipe assembly, aiming to solve the problem of affecting the performance of the compressor when the compressor is silenced.

[0048] See also Figure 1In one embodiment of the present invention, the exhaust pipe assembly 100 includes a cover body 1, an exhaust pipe 2 and a muffler 3, the cover body 1 is used to cover the opening of the high-pressure chamber of the crankcase, and the cover body 1 is provided with an exhaust port 11 and a connecting port 12; the exhaust pipe 2 is connected to the exhaust port 11; the muffler 3 is installed on the cover body 1, and the muffler 3 has a muffler cavity connected to the connecting 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. The cover body 1 is provided with an exhaust port 11 and a connecting port 12. The exhaust port 11 is used to connect to the exhaust pipe 2, and the connecting port 12 is used to connect to the silencer chamber of the silencer 3.

[0051] The exhaust pipe 2 is 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 to subsequent processing equipment. One end of the exhaust pipe 2 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 muffler 3 is installed on the cover 1 to reduce the noise generated during the exhaust process. The muffler 3 has a muffler cavity connected to the communication port 12 on the cover 1 to form a closed muffler cavity.

[0053] The cover 1 is tightly connected to the crankcase to form a high-pressure chamber. The high-pressure chamber is 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, and part of the gas enters the exhaust pipe 2 through the exhaust port 11 on the cover 1, and is finally discharged to the outside or subsequent processing equipment, and the other part of the gas enters the muffler chamber of the muffler 3 through the connecting port 12 on the cover 1.

[0054] It should also be noted that if the muffler is set at the intake end of the compressor, the muffler will usually increase the resistance of the intake path, causing the compressor to require a larger negative pressure to inhale gas. The additional resistance will reduce the intake volume of the compressor, thereby affecting its working efficiency and output power. The internal structure of the muffler (such as sound-absorbing materials, reflective plates, etc.) may cause uneven distribution of airflow, resulting in fluctuations in intake flow. Flow fluctuations will affect the stable operation of the compressor and may cause increased vibration and noise. Therefore, the stronger the silencer's silencer ability, it usually means that its internal structure is more complex and has greater resistance. Therefore, the stronger the silencer 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 present invention, 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 to 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, offsetting 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 1In the first embodiment, the muffler tube 31 comprises a quarter-wavelength tube. When the length of the tube is equal to a quarter-wavelength of the noise frequency, the sound waves in the tube will form a pressure node at the closed end and a pressure antinode at the open end. This configuration causes the sound waves in the tube to resonate with the external sound waves, thereby forming a strong sound pressure gradient at the tube mouth, resulting in energy dissipation.

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

[0062]

[0063] Wherein, L is the length of the quarter-wavelength tube, and R is the ratio of the cross-sectional area of ​​the quarter-wavelength tube to the cross-sectional area of ​​the main line. When TL reaches the maximum, the length of the muffler is:

[0064] Therefore, the length of the muffler tube 31 should be one quarter of the wavelength of the required muffler frequency or an integral multiple thereof.

[0065] Of course, according to the above-mentioned muffler principle, the muffler tube 31 can also have other lengths, such as:

[0066] Half-wavelength tubes, whose length is usually half the wavelength of the target noise frequency, when the length of the tube is equal to half the wavelength of the noise frequency, the sound waves in the tube will form pressure nodes at both ends. This configuration will also produce a resonance effect, but at a different location.

[0067] A three-quarter wavelength tube, whose length is usually three-quarters of the wavelength of the target noise frequency, will form a pressure node at one end and a pressure anti-node at the other end when the tube length is equal to three-quarters of the wavelength of the noise frequency. This configuration will also produce a resonance effect, but its effect is not as significant as a quarter-wavelength tube.

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

[0069] Of course, the silencer 31 is not limited to the above examples, and technicians in the relevant field may make other changes based on 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 included in the protection scope of the embodiments of this specification.

[0070] For further information, see Figure 2In the second embodiment, the muffler pipe 31 includes a plurality of pipe segments 311 , the plurality of pipe segments 311 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 in parallel 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 silencing effect of the silencer tube 31 is only related to the length and cross-sectional area of ​​the wavelength tube. That is, the longer the silencer tube 31 is, the greater the transmission loss will be.

[0073] However, the longer the silencer pipe 31 is, the larger the space span it occupies. Therefore, the silencer pipe 31 is configured to bend along a tortuous route, thereby reducing the occupied space.

[0074] It should also be noted that by using multiple pipe sections 311 of different lengths, different noise frequencies can be eliminated. The length of each pipe section 311 can be designed to correspond to a quarter wavelength of a specific frequency. This design enables the entire system to simultaneously process noise within multiple frequency ranges, thereby achieving a wider band noise elimination effect.

[0075] The working principle of each pipe section 311 is the same as that of a conventional single silencer pipe 31. When a sound wave enters the pipe section 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 section 311 is equal to one quarter wavelength of the target noise frequency, the sound wave will generate a strong sound pressure gradient at the pipe opening, resulting in energy dissipation.

[0076] By arranging multiple pipe sections 311 in parallel and connecting them end to end, a resonance effect can be formed at multiple locations to further enhance energy dissipation.

[0077] In other embodiments, the muffler 31 can be arranged in parallel with the exhaust pipe 2. Since the extension path of the exhaust pipe 2 is the necessary occupied space, the muffler 31 is also synchronously extended 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 much impact on the space occupied.

[0078] In other embodiments, the muffler pipe 31 is arranged in a radial direction in sequence along a circumferential direction. In this way, the muffler pipe 31 is coiled, which can also achieve the purpose of reducing the occupied space.

[0079] Specifically, in this embodiment, the cross section of the muffler 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-sectional shape of the wavelength tube. It has good fluid dynamics, small resistance, relatively simple manufacturing and low cost. At the resonant frequency, the wavelength tube with a circular cross-section can effectively absorb noise of a specific frequency. Due to its symmetry, the acoustic performance of the circular cross-section is relatively uniform in all directions.

[0081] Polygonal cross-sections can generally be set to square, hexagonal, etc.

[0082] A square cross section may be more convenient to manufacture and install, especially where space is limited. It can make more efficient use of space.

[0083] The hexagonal cross section is between the circular and square shapes, combining the advantages of both. It provides better fluid dynamics and higher structural strength. The hexagonal cross section can reduce the impact of high-order harmonics to a certain extent.

[0084] The special-shaped cross section can be set to a sawtooth cross section to improve the sound absorption effect by increasing the surface roughness. The sawtooth cross section is usually used in situations where it is necessary to further increase the surface area or change the airflow path. The sawtooth cross section can provide more surface area, thereby increasing the effective area of ​​the sound-absorbing material. By changing the airflow path, the noise can be further reduced.

[0085] Specifically, see Figure 3 In the third embodiment, the muffler portion 3 includes a first muffler pipe section 301, a second muffler pipe section 302, and an outward expansion pipe section 303 arranged between the first muffler pipe section 301 and the second muffler pipe section 302, the end of the first muffler pipe section 301 away from the outward expansion pipe section 303 is connected to the connecting port 12, and the end of the second muffler pipe section 302 away from the outward expansion pipe section 303 is closed, wherein the inner diameter of the outward expansion pipe section 303 is larger than the inner diameters of the first muffler pipe section 301 and the second muffler pipe section 302.

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

[0087] It should be noted that when the sound wave enters the first silencer pipe section 301 from the connecting port 12, the sound wave will propagate in the silencer pipe section 31 due to the small cross-sectional area of ​​the silencer pipe section 31. When the sound wave reaches the outer expansion pipe section 303, the sound wave will be reflected due to the large inner diameter of the outer expansion pipe section 303. Part of the sound wave will be reflected back to the first silencer pipe section 31, and the other part will continue to propagate to the second silencer pipe section 302. The reflected sound wave interferes with the incident sound wave to form a standing wave. This interference effect can effectively dissipate the sound wave energy, thereby reducing noise. The existence of the outer expansion pipe section 303 increases the complexity of the sound wave path and further enhances the interference effect.

[0088] Further, in this embodiment, the inner diameter of the outwardly expanded pipe section 303 is D1, and the inner diameter of the silencer pipe section 31 is D2, wherein D1 / D2≥1.5.

[0089] It is understandable that when a sound wave enters a large cross section from a small cross section, part of the sound wave will be reflected at the cross section change due to the sudden increase in cross section area. A larger cross section ratio can enhance this reflection effect, thereby improving the sound elimination effect.

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

[0091] Setting D1 / D2≥1.5 can improve the silencing effect of low-frequency noise. Low-frequency noise requires a larger space to effectively reflect and interfere, so a larger cross-sectional ratio is particularly important for controlling low-frequency noise.

[0092] Furthermore, 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 silencer pipe section 31 is greater than or equal to 3, a better silencing effect can be ensured in a wide frequency band.

[0093] See also Figure 4 In the fourth embodiment, the muffler portion 3 includes a connecting pipe 312 and a muffler shell 313 which are connected to each other. One end of the connecting pipe 312 which is away from the muffler shell 313 is connected to the connecting port 12 , and a muffler cavity is formed in the muffler shell 313 .

[0094] The silencer part 3 is composed of a connecting pipe 312 and a silencer shell 313 to form a Helmholtz resonator. The connecting pipe 312 is used to guide the gas from the connecting port 12 to the silencer shell 313. The silencer shell 313 is the main part of the silencer part 3 and has a silencer cavity formed therein. The silencer cavity in the silencer shell 313 is used to absorb and dissipate sound wave energy, thereby reducing noise.

[0095] The muffler working principle is as follows: the gas discharged from the crankcase enters the connecting pipe 312 through the connecting port 12 on the cover body 1, and the connecting pipe 312 guides the gas to the muffler shell 313. After the gas enters the muffler shell 313, the sound waves are absorbed and dissipated in the muffler cavity. Because the muffler cavity in the muffler shell 313 usually has a large volume, when the sound wave enters the muffler cavity, it will be reflected multiple times in the cavity. These reflected sound waves interfere with the incident sound waves to form standing waves, thereby dissipating the sound wave energy.

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

[0097] Furthermore, if it is necessary to deal with broadband noise, a plurality of different silencing cavities may be provided in the silencing shell 313 or a multi-stage silencing structure may be adopted to cover a wider frequency range.

[0098] For further information, see Figure 5 In the fifth embodiment, a plurality of the communication ports 12 are provided on the cover body 1 , and a plurality of the silencers 3 are correspondingly provided, and each of the silencers 3 is connected to the corresponding communication port 12 .

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

[0100] Specifically, each of the silencers 3 can be configured as a silencer structure with the same silencer principle, for example, all of them can be configured as silencer pipes 31 .

[0101] The lengths of the silencer pipes 31 may be the same or different. By providing silencer pipes 31 of different lengths, different frequency ranges can be silenced, thereby achieving broadband noise reduction.

[0102] Each silencer pipe 31 can be optimally designed according to actual noise characteristics and frequency distribution to ensure that the best silencer effect can be achieved in each frequency range.

[0103] The multiple silencers 3 can be configured as silencer structures with different silencer principles. For example, one of the silencers 3 is configured as a silencer pipe 31, one of the silencers 3 is configured as an expansion chamber silencer structure, and one of the silencers 3 is configured as a Helmholtz resonator structure.

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

[0105] Furthermore, since the exhaust temperature is relatively high on the exhaust side of the compression cylinder where the muffler 3 is arranged, the sound absorbing material and structure in the muffler 3 may be more easily affected. Therefore, in this embodiment, the muffler 3 is made of metal, plastic or composite material.

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

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

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

[0109] Specifically, the refrigeration device includes a refrigerator. As a household appliance that is essential in daily life, people have higher and higher requirements for its performance. The noise value, as an important parameter for measuring comfort, has also attracted much attention. The compressor is arranged in the refrigerator, and the noise reduction effect of the compressor is better, and the performance of the compressor is not greatly affected, so the noise of the refrigerator is also smaller.

[0110] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An exhaust pipe assembly, characterized in that: include: A cover body, used to cover the opening of the high-pressure chamber of the crankcase, and the cover body is provided with an exhaust port and a communication port; An exhaust pipe, connected to the exhaust port; as well as, The muffler is installed on the cover body, and the muffler has a muffler cavity which is connected with the communication port.

2. The exhaust pipe assembly according to claim 1, characterized in that The muffler portion comprises a muffler pipe, one end of which is communicated with the communication port, and the other end of which is closed.

3. The exhaust pipe assembly according to claim 1, characterized in that The muffler tube comprises a quarter-wavelength tube.

4. The exhaust pipe assembly according to claim 2, characterized in that The muffler pipe comprises a plurality of pipe sections, the plurality of pipe sections are arranged side by side, and two adjacent pipe sections are connected end to end; or, The muffler pipe is arranged in parallel with the exhaust pipe; or, The silencer pipe is arranged to extend in a spiral shape.

5. The exhaust pipe assembly according to claim 2, characterized in that The cross section of the inner cavity of the muffler pipe is set to be circular, polygonal or irregular.

6. The exhaust pipe assembly according to claim 1, characterized in that The silencer portion includes a first silencer pipe section, a second silencer pipe section, and an outward expansion pipe section arranged between the first silencer pipe section and the second silencer pipe section, wherein one end of the first silencer pipe section away from the outward expansion pipe section is connected to the connecting port, and one end of the second silencer pipe section away from the outward expansion pipe section is closed, wherein the inner diameter of the outward expansion pipe section is larger than the inner diameter of the first silencer pipe section and the second silencer pipe section.

7. The exhaust pipe assembly according to claim 6, characterized in that The inner diameter of the outward expansion pipe section is D1, and the inner diameter of the silencer pipe section is D2, wherein D1 / D2≥1.

5.

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

9. The exhaust pipe assembly according to claim 1, characterized in that The muffler portion comprises a connecting pipe and a muffler shell which are connected to each other. One end of the connecting pipe away from the muffler shell is connected to the connecting port. The muffler shell has the muffler cavity formed therein.

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

11. The exhaust pipe assembly according to claim 1, characterized in that The muffler is made of metal, plastic or composite material.

12. A compressor, characterized in that: include: A crankcase having a high-pressure chamber with an opening at one end; as well as, In the exhaust pipe assembly as described in any one of claims 1 to 11, the cover body is arranged to cover the opening of the high-pressure chamber.

13. A refrigeration device, characterized in that: Comprising the compressor of claim 12.

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

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