Silencing structure and compressor

Abstract

A silencing structure and a compressor. The silencing structure comprises a body part and a communicating part, wherein the body part has a silencing cavity, and an air suction port and an air outlet which are in communication with the silencing cavity; and the communicating part is arranged in the silencing cavity and comprises an air channel, an air intake end and an air output end of the air channel both being in communication with the silencing cavity, the air intake end of the communicating part being arranged towards the air suction port, and the air output end of the communicating part being arranged towards the air outlet. By means of the silencing structure, the flow resistance of an airflow can be weakened to a great extent, thereby solving the problems of the flow resistance being large, the continuity being poor, and the refrigeration performance being affected when the airflow flows through a silencer.

Description

[0001] This application claims priority to Chinese Patent Application No. 202311554019.6 filed with the China National Intellectual Property Administration on November 17, 2023 and entitled "SILENCING STRUCTURE AND COMPRESSOR", the entire contents of which are herein incorporated by reference.FIELD

[0002] The present application relates to the technical field of silencing, and specifically relates to a silencing structure and a compressor.BACKGROUND

[0003] Refrigerators are essential household appliances in daily life, and people have increasingly higher performance requirements. In addition to the critical refrigeration capacity, comfort is also one of the most critical indicators of refrigerators. As an important parameter for evaluating comfort, noise has attracted extensive attention.

[0004] In the related art, to achieve silencing, the internal pipe structure of a suction silencer of a compressor is provided with a plurality of silencing cavities. However, when gas flow flows in different silencing cavities, it will be affected by the inlets and outlets of the silencing cavities, resulting in high flow resistance and poor continuity to the gas flow, and then resulting in a problem of poor refrigeration performance.SUMMARY Technical Problem

[0005] The main purpose of the present application is to provide a silencing structure and a compressor, to solve the problems of large flow resistance and poor continuity when the gas flow flows through the silencer, which affect the refrigeration performance.Technical Solution

[0006] To achieve the above purpose, the present application provides a silencing structure, wherein the silencing structure comprises: a body portion, wherein the body portion has a silencing chamber, and a suction port and an outlet port which are in communication with the silencing chamber; and a communicating portion arranged in the silencing chamber, wherein the communicating portion comprises a gas passage, an inlet end and an outlet end of the communicating portion are both in communication with the silencing chamber, the inlet end of the communicating portion is arranged towards the suction port, and the outlet end of the communicating portion is arranged towards the outlet port.

[0007] In an embodiment, the communicating portion comprises a communicating pipe, the communicating pipe comprises a first pipe section extending along a first direction, and a second pipe section extending along a second direction, and the first direction intersects the second direction.

[0008] The suction port is aligned with a pipe port of the first pipe section in the first direction, and the outlet port is aligned with a pipe port of the second pipe section in the second direction.

[0009] In an embodiment, a distance between the pipe port of the first pipe section and the outlet port is S1, wherein, 1mm ≤ S1 ≤ 3mm; and / or, a distance between the pipe port of the second pipe section and the suction port is S2, wherein, 1mm ≤ S2 ≤ 3mm.

[0010] In an embodiment, a silencing hole is further opened in the communicating portion, and the silencing hole is arranged in communication with the gas passage.

[0011] In an embodiment, the communicating portion comprises a pipe section in the second silencing chamber, the pipe section has a length L, and the silencing hole is arranged at a position ranging from 1 / 3L to 2 / 3L of the pipe section.

[0012] In an embodiment, the silencing hole has a diameter D0, wherein, 1mm ≤ D0 ≤ 2mm.

[0013] In an embodiment, the silencing chamber comprises a first silencing chamber and a second silencing chamber arranged at an interval, the suction port is arranged in communication with the first silencing chamber, and the outlet port is arranged in communication with the second silencing chamber; the inlet end of the communicating portion is located inside the first silencing chamber, and the outlet end of the communicating portion is located inside the second silencing chamber.

[0014] In an embodiment, the body portion comprises a first housing and a second housing disposed opposite to each other; the second housing is formed with a groove with an opening facing the first housing, and a partition portion extends from a groove bottom of the groove towards the opening along a groove depth direction, to divide the groove into a first groove and a second groove arranged adjacent to each other. The first housing covers the openings of the first groove and the second groove, to cooperate with the second housing to enclose the first silencing chamber and the second silencing chamber, and the communication part passes through the partition portion.

[0015] In an embodiment, a side wall of the first groove is provided with a first mounting notch, and a side wall of the second groove is provided with a second mounting notch; the inlet end of the communicating portion is located inside the first groove and faces the first mounting notch, and the outlet end of the communicating portion is located inside the second groove and faces the second mounting notch; the first housing comprises a first mounting part embedded in the first mounting notch and a second mounting part embedded in the second mounting notch; the silencing structure further comprises a suction pipe passing through the first mounting part and an output pipe passing through the second mounting part. A pipe port of the suction pipe facing an inlet end of the communicating portion forms the suction port, and a pipe port of the suction pipe facing the outlet end of the communicating portion forms the outlet port.

[0016] In an embodiment, a sealing groove is recessed at the peripheral edge of the opening of the groove along the groove depth direction, and the sealing groove is disposed around the periphery of the opening of the groove; a protruding rib matching the sealing groove is disposed on a side of the first housing facing the second housing, and the first housing and the second housing are in sealing cooperation through the protruding rib and the sealing groove.

[0017] In an embodiment, the body portion is provided with a first through hole communicating the first silencing chamber with the second silencing chamber; and / or, the body portion is provided with a second through hole communicating the second silencing chamber with the outside.

[0018] In an embodiment, the diameter of the first through hole is D1, wherein, 0.5 mm ≤ D1 ≤ 1.5 mm; and / or, the diameter of the second through hole is D2, wherein, 0.5 mm ≤ D2 ≤ 1.5 mm.

[0019] The present application further provides a compressor, and the compressor comprises a silencing structure. The silencing structure comprises: a body portion, wherein, the body portion is provided with a silencing chamber, and a suction port and an outlet port arranged in communication with the silencing chamber; and a communicating portion arranged in the silencing chamber, wherein, the communicating portion comprises a gas passage, both an inlet end and an outlet end of the communicating portion are in communication with the silencing chamber, the inlet end of the communicating portion is arranged towards the suction port, and the outlet end of the communicating portion is arranged towards the outlet port. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] For a clearer description of the technical solutions in the embodiments of the present application or in related art, a brief introduction to the accompanying drawings that need to be used in the description of the embodiments is provided below. Obviously, the drawings described below are only some embodiments of the present application. For a person of ordinary skill in the art, other drawings may be obtained based on the structures shown in these drawings without creative efforts. FIG. 1 shows a schematic view of an inner structure of a silencing structure according to an embodiment of the present application; FIG.2 shows a cross-sectional view of the silencing structure in FIG. 1; FIG.3 shows another cross-sectional view of the silencing structure in FIG. 1; FIG.4 shows a schematic view of part of the structure of the silencing structure in FIG. 1; and FIG.5 shows an enlarged schematic view of part A in FIG. 4.

[0021] Description of the reference signs. [Table 1_sm_0001]No.NameNo.Name100silencing structure12second housing1body portion12afirst grooveasilencing chamber121afirst mounting notcha1first silencing chamber12bsecond groovea2second silencing chamber121bsecond mounting notchbsuction port13partition portioncoutlet port12csealing groovedsilencing hole2communicating portionefirst through hole2ainlet end of the communicating portionfsecond through hole2boutlet end of the communicating portion11first housing21first pipe section111first mounting part22second pipe section112second mounting part3suction pipe113protruding rib4output pipe

[0022] The implementation, functional features and advantages of the purpose of the present application will be further described in combination with embodiments and with reference to the accompanying drawings.DETAILED DESCRIPTION OF THE APPLICATION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0024] It needs to be indicated that all directional indications involved in the embodiments of the present application (such as upper, lower, left, right, front, rear) are only used to explain the relative positional relationship, movement conditions, etc. among the components under a certain posture (as shown in the accompanying drawings). When the certain posture changes, the directional indications will change accordingly.

[0025] In addition, the description of terms such as "first" and "second" in the present application are for descriptive purposes only, and shall not be construed to indicate or imply relative importance or implicitly indicate the quantity of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the term of "and / or" in the whole text includes three parallel technical solutions, and taking "A and / or B" for example, it includes solution A, or solution B, or a solution satisfying A and B at the same time. In addition, the technical solutions of the embodiments may be combined with each other, provided that such combination can be achieved by a person of ordinary skill in the art. When a combination of technical solutions is contradictory or cannot be achieved, it shall be deemed that such combination does not exist and is not within the protection scope claimed by the present application.

[0026] Refrigerators are essential household appliances in daily life, and people have increasingly higher performance requirements. In addition to the critical refrigeration capacity, comfort is also one of the most critical indicators of refrigerators. As an important parameter for evaluating comfort, noise has attracted extensive attention. In the related art, to achieve silencing, the internal pipe structure of a suction silencer of a compressor is provided with a plurality of silencing cavities. However, when gas flow flows in different silencing cavities, it will be affected by the inlets and outlets of the silencing cavities, resulting in high flow resistance and poor continuity to the gas flow, and then resulting in the problem of poor refrigeration performance.

[0027] To achieve the above purpose, the present application provides a silencing structure. FIG. 1 shows a schematic view of an inner structure of a silencing structure according to an embodiment of the present application; FIG. 2 shows a cross-sectional view of the silencing structure in FIG. 1; FIG. 3 shows another cross-sectional view of the silencing structure in FIG. 1; FIG. 4 shows a schematic view of part of the structure of the silencing structure in FIG. 1; and FIG. 5 shows an enlarged schematic view of part A in FIG. 4.

[0028] Referring to FIG. 1 to FIG. 3, the silencing structure 100 comprises a body portion 1 and a communicating portion 2. The body portion 1 has a silencing chamber a, and a suction port b and an outlet port c which are in communication with the silencing chamber a; the communicating portion 2 arranged in the silencing chamber a. The communicating portion 2 comprises a gas passage, an inlet end 2a and an outlet end of the communicating portion are both in communication with the silencing chamber a, the inlet end 2a of the communicating portion is arranged towards the suction port b, and the outlet end 2b of the communicating portion is arranged towards the outlet port c.

[0029] In an embodiment, the communicating portion 2 may be an independently arranged component, or a structure having a communicating function formed on a certain part inside the silencing chamber a. For example, the communicating portion 2 may be a communicating pipe fixedly connected to the inner wall of the silencing chamber a via a connecting member. Apparently, the communicating portion 2 may also be a communicating hole formed in the partition plate that divides the silencing chamber a into two silencing cavities. The communicating hole can be configured as an inclined hole, and one end of the inclined hole forms an inlet end facing the suction port b, and the other end of the inclined hole forms an outlet end facing the outlet port c. Needless to say, the communicating portion 2 is not limited to the above examples. Those skilled in the art may make other modifications under the enlightenment of the technical essence of the embodiments in this specification, which shall fall within the protection scope of the embodiments of the present description as long as they achieve the same or similar functions and effects as the embodiments herein.

[0030] The suction port b and the outlet port c may be openings directly penetrating the chamber wall of the silencing chamber a, or may be the suction port b and the outlet port c respectively formed by the pipe ports of the suction pipe 3 and the output pipe 4 which penetrate the chamber wall of the silencing chamber a respectively, which can be designed based on actual conditions, and is not limited in the embodiments of this specification.

[0031] The silencer of the present application realizes silencing by means of sound wave reflection and interference caused by expansion and contraction of a cross-sectional area. In an embodiment, the cross-sectional area of the silencing chamber a is much larger than the sizes of the cross sections of the suction port b and the outlet port c, and the cross section of the gas passage is also set to be much smaller than that of the silencing chamber a.

[0032] In the technical solutions provided by the present application, one suction port b and one outlet port c are arranged at an interval in the body portion 1. When gas flow enters the silencing chamber a from the suction port b in a circulating pipeline, it enters an expansion chamber formed by the silencing chamber a, and an expansion chamber silencer achieves silencing through mutual interference of sound waves after reflection of sound waves generated by sudden changes of the cross section. When the gas flow flows from the suction port b to the outlet port c via the silencing chamber a, a distance between the inlet and outlet of the expansion chamber silencer is relatively long, the gas flow easily diverges, and is susceptible to resistance from the inner wall of the silencing chamber a when flowing out from the outlet port c, resulting in high flow resistance. By arranging the communicating portion 2 inside the silencing chamber a, the noise generated by the gas flow enters the silencing chamber a with a large cross section from the suction port b; the cross section further changes to a certain extent when the gas flow passes through the gas passage, and undergoes another sudden change when the gas flow flows through the silencing chamber a from the gas passage; finally, when the gas flow flows out from the outlet port c, the sound waves are reflected a plurality of times, thus achieving an excellent silencing effect. Meanwhile, the inlet end2a of the communicating portion is arranged towards the suction port b and the outlet end 2b of the communicating portion is arranged towards the outlet port c. When the gas flow enters the silencing chamber a through the suction port b, most of the gas flow will enter the inlet end 2a of the communicating portion under the effect of fluid viscous force and flows along the gas passage to the outlet end 2b of the communicating portion. Since the outlet end2b of the communicating portion faces the outlet port c, and most of the gas flow will enter the outlet port c under the effect of viscous force, in the process where the gas flow flows sequentially from the suction port b, the silencing chamber a, the gas passage, the silencing chamber a to the outlet port c finally, the gas flow can be well guided, and the flow resistance of the gas flow is greatly reduced. This solves the problems of high flow resistance and poor gas flow continuity when the gas flow passes through the silencer, which affect refrigeration performance.

[0033] In the related art, to adapt to the position layout of external environmental components, the orientations of the suction port b and the outlet port c of the silencer in the compressor structure are not in the same straight line. That is, the direction that the suction port b faces is different from the direction that the outlet port c faces. During the flowing process, the gas flow will be ejected along the direction that the suction port b faces, and is discharged out of the outlet port c after being reflected by the partition plate or the inner wall surface of the silencing chamber a and being affected by gas pressure, thus subjecting the gas flow to a plurality of flow resistances.

[0034] In an embodiment, the communicating portion 2 comprises a communicating pipe; the communicating pipe comprises a first pipe section 21 extending along a first direction, and a second pipe section 22 extending along a second direction; the first direction intersects the second direction. The suction port b is aligned with a pipe port of the first pipe section 21 in the first direction, and the outlet port c is aligned with a pipe port of the second pipe section 22 in the second direction. With such arrangement, the central axis of the first pipe section 21 is collinear with the central axis of the suction port b in the first direction, and the central axis of the second pipe section 22 is collinear with the central axis of the outlet port c in the second direction, and then most of the gas flow ejected from the suction port b can directly enter the first pipe section 21 along the first direction, and the gas flow ejected from the second pipe section 22 can also directly enter the outlet port c along the second direction.

[0035] To reduce flow resistance and energy loss of gas flow during the flowing process as much as possible, the diameter of the suction port b may be set to be the same as the size of the pipe port of the first pipe section 21, and the diameter of the outlet port c may be set to be equal to the size of the pipe port of the second pipe section 22. In an embodiment, the diameter of the suction port b, the diameter of the first pipe section 21, the diameter of the second pipe section 22 and the diameter of the outlet port c can all be set to the same.

[0036] In an embodiment, a distance between the pipe port of the first pipe section 21 and the outlet port c is S1, wherein, 1mm ≤ S1 ≤ 3mm; and / or, a distance between the pipe port of the second pipe section 22 and the suction port b is S2, wherein, 1mm ≤ S2 ≤ 3mm. It can be understood that due to the long distance between the inlet and outlet of the expansion chamber silencer, the gas flow easily diverges, and can form vortex more easily after impacting the cross section having sudden change, to generate noise. Therefore, it is necessary to set a proper distance between the suction port b and the first pipe section 21, and the gas flow can smoothly flow into the gas passage and sound waves can be reflected in the silencing chamber a in a timely manner for silencing. When S1 and S2 are too small, this does not help reflect or silence the sound waves, and the silencing effect will be weakened; when S1 and S2 are too large, the gas flow easily diverges and generates noise. The specific values of S1 and S2 can be determined based on actual conditions, and are not limited by the embodiments of this specification.

[0037] In an embodiment, a silencing hole d is opened in the communicating portion 2, and the silencing hole d is arranged in communication with the gas passage. When the silencing hole d is arranged, in addition to sound wave reflection and interference that can achieve the silencing effect, fluid mechanics effect is also involved. When exhaust gas flow passes through the silencing hole d, the flow velocity increases due to the limitation of the aperture, to generate a certain vortex. Such a vortex will consume part of the energy of the sound waves and reduces the intensity of sound waves. In addition, the arrangement of the silencing hole d can also change the propagation direction of sound waves and enable them to diffuse within a specific area, to achieve a better silencing effect.

[0038] The silencing hole d can be configured as a round hole or a rectangular hole. The round hole is one of the most common shapes of the silencing hole d, with the advantage of easy processing and manufacturing. In addition, the edge of the round hole is smooth and then can reduce fluid disturbance and vortex formation, which is conducive to the propagation and interference of sound waves. The rectangular hole is also one of the commonly adopted shapes of the silencing hole d, and has an advantage of being able to provide a large surface area, to enhance the absorption and consumption of sound waves.

[0039] In an embodiment, referring to FIG. 4 and FIG. 5, the communicating portion 2 comprises a pipe section in the second silencing chambera2, the pipe section has a length L, and the silencing hole d is arranged at a position ranging from 1 / 3L to 2 / 3L of the pipe section. The silencing hole d has a diameter D0, wherein, 1mm ≤ D0 ≤ 2mm.When the diameter of the silencing hole d is set too small, it is difficult to achieve effective sound wave interference and vortex consumption, resulting in poor silencing effect. When the diameter of the silencing hole d is set excessively large, part of the gas flow will overflow from the silencing hole d when the gas flow flows inside the gas passage, which causes gas flow loss. The silencing hole d can guide the gas flow to flow in a specific manner and change the propagation direction and energy distribution of sound waves. By optimizing the position and size of the silencing hole d, sound waves can be fully consumed and interfered inside the silencing chamber a, to achieve an optimized silencing effect.

[0040] In an embodiment, the silencing chamber a comprises a first silencing chambera1 and a second silencing chambera2 arranged at an interval, the suction port b is arranged in communication with the first silencing chambera1, and the outlet port c is arranged in communication with the second silencing chambera2;the inlet end2a of the communicating portion is located inside the first silencing chambera1, and the outlet end2b of the communicating portion is located inside the second silencing chamber a 2. In this way, when the gas flow passes through the first silencing chambera1, sound waves are initially absorbed and attenuated. However, the gas flow still has certain noise after passing through the first silencing chambera1, and such noise will be absorbed and weakened again in the second silencing chambera2. The series connection of two silencing cavities a can further reduce exhaust noise and improve the silencing effect. If too few silencing cavities a are arranged inside the silencer, this may render poor silencing effect and large exhaust noise. If too many silencing cavities a are arranged, the volume and cost of the silencer will be increased; meanwhile, excessive silencing cavities a may impose excessive resistance on discharging gas flow, and affect engine performance and fuel economy.

[0041] Since the communicating portion 2 is disposed inside the silencing chamber a, in order to facilitate manufacturing and subsequent assembly, in an embodiment, the body portion 1 comprises a first housing 11 and a second housing 12 disposed opposite to each other; the second housing 12 is formed with a groove with an opening facing the first housing 11, a partition portion 13 extends from a groove bottom of the groove towards the opening along a groove depth direction, to divide the groove into a first groove 12a and a second groove 12b arranged adjacent to each other. The first housing 11 covers the openings of the first groove 12a and the second groove 12b, to cooperate with the second housing 12 to enclose the first silencing chambera1 and the second silencing chambera2, and the communication part 2 passes through the partition portion 13.Simple structure: the combination of two housings can simply and effectively form an enclosed silencing space without complicated internal structures; the two housings of the silencing chamber a can be manufactured separately and then combined through proper processes, which reduces the manufacturing difficulty and facilitates demolding of the first housing 11 and the second housing 12. The design of the silencing chamber a can be adjusted as required. For example, the shape, size and material, etc. of the housings can be flexibly changed to adapt to engines with different displacements and diverse silencing requirements.

[0042] During assembly, a sealing arrangement is required between the first housing 11 and the second housing 12 to jointly enclose a hermetically sealed chamber, to prevent gas flow loss and ensure effective noise reduction. The first housing 11 and the second housing 12 can be fixedly connected by means of adhesive bonding, bolt connection and other methods to guarantee the stability of the first housing 11 and the second housing 12.

[0043] In an embodiment, a side wall of the first groove 12a is provided with a first mounting notch121a, and a side wall of the second groove 12b is provided with a second mounting notch121b; the inlet end of the communicating portion 2 is located inside the first groove 12a and faces the first mounting notch121a, and the outlet end2b of the communicating portion is located inside the second groove 12b and faces the second mounting notch121b. Therefore, when the second housing 12 is molded to form the first groove12a, the second groove12b and the partition portion 13, the communicating portion 2 can be molded integrally and conveniently at the same time.

[0044] To match the second housing 12 and enable aligning the suction port b and the outlet port c with the inlet end2aand the outlet end of the communicating portion respectively, the first housing 11 comprises a first mounting part 111 embedded in the first mounting notch 121aand a second mounting part 112 embedded in the second mounting notch121b; the silencing structure 100 further comprises a suction pipe 3 passing through the first mounting part 111 and an output pipe 4 passing through the second mounting part 112. A pipe port of the suction pipe 3 facing an inlet end of the communicating portion 2 forms the suction port b, and a pipe port of the suction pipe 3 facing the outlet end 2b of the communicating portion forms the outlet port c. Thus, after the first housing 11is molded, the suction pipe 3 and the output pipe 4 can be conveniently mounted on the first mounting part 111 and the second mounting part 112 respectively. Meanwhile, it facilitates the connection between the silencer and an external circulating pipeline, that is, one end of the suction pipe 3 is connected to a refrigerant circulating pipeline and the other end is in communication with the first silencing chamber a1; one end of the output pipe 4 is connected to the refrigerant circulating pipeline, and the other end is in communication with the second silencing chamber a2.

[0045] The basic silencing principle of a resonance chamber of the silencer adopts a Helmholtz resonator. The expansion ratio determines a silencing capacity of the silencer, while the length of the expansion chamber and the insertion depth of an insertion pipe determine a silencing frequency. In the present application, the lengths of the suction pipe 3 and the output pipe 4 inserted into the silencing chamber a can be appropriately adjusted based on a required silencing frequency.

[0046] In an embodiment, a sealing groove 12c is recessed at the peripheral edge of the opening of the groove along the groove depth direction, and the sealing groove 12c is disposed around the periphery of the opening of the groove; a protruding rib 113 matching the sealing groove 12c is disposed on a side of the first housing 11 facing the second housing 12, and the first housing 11 and the second housing 12 are in sealing cooperation through the protruding rib 113 and the sealing groove 12c. By the arrangement that the shape and size of the sealing groove 12c match the protruding rib 113, when the protruding rib 113 is placed inside the sealing groove 12c, the side face and the bottom of the protruding rib 113 are in close contact with the side face and the bottom of the sealing groove 12c, thus forming a tight sealing interface and achieving an excellent sealing effect. In addition, the matching between the protruding rib 113 and the sealing groove 12c provides a high bearing capacity to withstand large pressure and tension, and thus, it is suitable for sealing requirements under harsh working conditions such as high pressure and high temperature, and will not cause deformation or leakage due to changes in temperature, pressure and other factors. Furthermore, sealing can be realized merely by the matching between the protruding rib 113 and the sealing groove 12c. Compared with bolt connection, bonding and other connection methods, this structure enables easier mounting and disassembly, and facilitates maintenance and replacement. Meanwhile, the matching between the protruding rib 113 and the sealing groove 12c may adopt a simple structure and a common material, which features lower cost than other sealing solutions and is applicable to mass production and widespread application.

[0047] Since oil mist may be mixed in the gas flow when a refrigerant gas flow flows, in order to prevent oil mist from depositing inside the silencing chamber a and affecting the normal operation of the silencer, in an embodiment, the body portion 1 is provided with a first through hole e communicating the first silencing chamber a1 with the second silencing chamber a2; and / or, the body portion 1 is provided with a second through hole f communicating the second silencing chamber a2 with the outside. In this way, the oil liquid deposited in the first silencing chamber a1 and the second silencing chamber a2 can be conveniently discharged through the first through hole e and the second through hole f respectively.

[0048] In an embodiment, the diameter of the first through hole e is D1, wherein, 0.5 mm ≤ D1 ≤ 1.5 mm; and / or, the diameter of the second through hole f is D2, wherein, 0.5 mm ≤ D2 ≤ 1.5 mm. In an embodiment, the diameters of the first through hole e and the second through hole f are set to be 1 mm. This arrangement prevents the difficulty in discharging the oil liquid when the diameters of the first through hole e and the second through hole f are set too small, and prevents generation of new noise and certain loss of the gas flow when the diameters the first through hole e and the second through hole f are set too large.

[0049] The present application further provides a compressor, and the compressor comprises the above silencing structure 100. The compressor further comprises other components such as a crankcase. Since the compressor comprises the silencing structure 100, reference can be made to the above embodiments for the specific structure of the silencing structure 100. As the silencing structure 100 of the compressor in the present application adopts all technical solutions of the above embodiments, it at least possesses all the effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one herein.

[0050] For the compressor, since the communicating portion 2 can greatly reduce the flow resistance of gas flow, this avoids increasing the energy consumption and internal loss of the compressor and further reducing the efficiency of the compressor as excessively high flow resistance would cause the gas discharged out of the compressor to generate a vortex and flow resistance inside the silencer. Certainly, when the flow resistance inside the silencing structure 100 is too large, it will also cause the gas discharged out of the compressor to generate backflow and turbulent flow inside the silencer, which results in the increase of noise of the compressor. The arrangement of the communicating portion 2 also lowers the load and wear of the compressor and prevent discharging unstable gas out of the compressor, to prevent the unstable gas flow from causing fluctuations in gas flow rate and pressure, and then prevent adverse influence on the stability and control accuracy of the entire system.

[0051] The foregoing are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application. Any equivalent structural transformation made using the contents of the specification and drawings based on the concept of the present application, or any direct / indirect application thereof in other related technical fields, shall fall within the scope of patent protection of the present application.

Claims

1. A silencing structure, comprising: a body portion, comprising a silencing chamber, and a suction port and an outlet port which are in communication with the silencing chamber; and a communicating portion arranged in the silencing chamber and comprising a gas passage, an inlet end and an outlet end of the communicating portion being both in communication with the silencing chamber, the inlet end of the communicating portion being arranged towards the suction port, and the outlet end of the communicating portion being arranged towards the outlet port.

2. The silencing structure according to claim 1, wherein: the communicating portion comprises a communicating pipe, wherein the communicating pipe comprises a first pipe section extending along a first direction and a second pipe section extending along a second direction, the first direction intersecting the second direction; and the suction port is aligned with a pipe port of the first pipe section in the first direction, and the outlet port is aligned with a pipe port of the second pipe section in the second direction.

3. The silencing structure according to claim 2, wherein: a distance between the pipe port of the first pipe section and the outlet port is S1, wherein 1mm ≤ S1 ≤ 3mm; and / or, a distance between the pipe port of the second pipe section and the suction port is S2, wherein 1mm ≤ S2 ≤ 3mm.

4. The silencing structure according to any one of claims 1 to 3, wherein a silencing hole is further provided in the communicating portion, and the silencing hole is arranged in communication with the gas passage.

5. The silencing structure according to claim 4, wherein the communicating portion comprises a pipe section located in the second silencing chamber, wherein the pipe section has a length L, and the silencing hole is arranged at a position ranging from 1 / 3L to 2 / 3L of the pipe section.

6. The silencing structure according to claim 4, wherein the silencing hole has a diameter D0, wherein 1mm ≤ D0 ≤ 2mm.

7. The silencing structure according to any one of claims 1 to 6, wherein the silencing chamber comprises a first silencing chamber and a second silencing chamber spaced apart from each other, wherein: the suction port is arranged in communication with the first silencing chamber, and the outlet port is arranged in communication with the second silencing chamber; and the inlet end of the communicating portion is located inside the first silencing chamber, and the outlet end of the communicating portion is located inside the second silencing chamber.

8. The silencing structure according to claim 7, wherein the body portion comprises a first housing and a second housing disposed opposite each other, wherein: the second housing is formed with a groove with an opening facing the first housing, wherein a partition portion extends from a groove bottom of the groove towards the opening along a groove depth direction, to divide the groove into a first groove and a second groove arranged adjacent to each other; and the first housing covers the openings of the first groove and the second groove, thereby cooperating with the second housing to enclose the first silencing chamber and the second silencing chamber, wherein the communication part passes through the partition portion.

9. The silencing structure according to claim 8, wherein: a side wall of the first groove is provided with a first mounting notch, and a side wall of the second groove is provided with a second mounting notch, wherein the inlet end of the communicating portion is located inside the first groove and faces the first mounting notch, and the outlet end of the communicating portion is located inside the second groove and faces the second mounting notch; the first housing comprises a first mounting part embedded in the first mounting notch and a second mounting part embedded in the second mounting notch; and the silencing structure further comprises a suction pipe passing through the first mounting part and an output pipe passing through the second mounting part, wherein a pipe port of the suction pipe facing a suction end of the communicating portion forms the suction port, and a pipe port of the suction pipe facing the outlet end of the communicating portion forms the outlet port.

10. The silencing structure according to claim 8, wherein: a sealing groove is recessed at a peripheral edge of the opening of the groove along the groove depth direction, and the sealing groove is disposed around the periphery of the opening of the groove; and a protruding rib matching the sealing groove is disposed on a side of the first housing facing the second housing, and the first housing and the second housing are in sealing cooperation through the protruding rib and the sealing groove.

11. The silencing structure according to claim 7, wherein: the body portion is provided with a first through hole communicating the first silencing chamber with the second silencing chamber; and / or the body portion is provided with a second through hole communicating the second silencing chamber with the outside.

12. The silencing structure according to claim 11, wherein: a diameter of the first through hole is D1, wherein 0.5 mm ≤ D1 ≤ 1.5 mm; and / or, a diameter of the second through hole is D2, wherein 0.5 mm ≤ D2 ≤ 1.5 mm.

13. A compressor, comprising the silencing structure according to any one of claims 1 to 12.

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