Silencer, compressor and refrigeration equipment

Abstract

The utility model discloses a silencer, a compressor and refrigeration equipment, and relates to the technical field of compressors, the silencer comprises a shell and an air inlet flow channel; the shell is provided with an air inlet and an air outlet, an included angle is formed between the orientation of the air inlet and the orientation of the air outlet, an air inlet cavity and an air outlet cavity are formed in the shell, the air inlet cavity communicates with the air inlet, and the air outlet cavity communicates with the air inlet cavity and the air outlet; the air inlet runner is arranged in the air inlet cavity and communicated with the air inlet and the air inlet cavity, and a through hole is formed in the outer wall of the air inlet runner. According to the technical scheme provided by the utility model, pneumatic noise formed at the tail end of the internal flow channel of the silencer when the flow speed of air flow is relatively high can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a muffler, 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 its important freezing capacity, the comfort of refrigerators is also one of the key indicators of refrigeration equipment. The noise value, as an important measurement parameter of comfort, has also attracted much attention. Among them, the air noise generated by the compressor during operation is one of the main sources of noise.

[0003] In the related art, a muffler is used to reduce the air noise of a compressor. When the air flow velocity is high, a large impact is easily formed at the end of the flow channel inside the muffler, thereby generating large aerodynamic noise. Utility Model Content

[0004] The main purpose of the utility model is to provide a muffler, a compressor and a refrigeration device, aiming at reducing the pneumatic noise formed at the end of the internal flow channel of the muffler when the air flow velocity is relatively large.

[0005] To achieve the above-mentioned purpose, the silencer proposed by the utility model comprises:

[0006] A shell body, provided with an air inlet and an air outlet, wherein the direction of the air inlet is arranged at an angle to the direction of the air outlet, and an air inlet cavity and an air outlet cavity are formed in the shell body, wherein the air inlet cavity is connected to the air inlet, and the air outlet cavity is connected to the air inlet cavity and the air outlet;

[0007] An intake air passage is arranged in the intake cavity, the intake air passage communicates with the intake port and the intake cavity, and an outer wall of the intake air passage is provided with a perforation.

[0008] In one embodiment, the size of the perforations is 0.5 mm to 2 mm.

[0009] In one embodiment, a plurality of the through holes are provided, and the plurality of the through holes are distributed at intervals along the circumferential direction and / or axial direction of the intake air passage.

[0010] In one embodiment, the size of the air inlet cavity is greater than the size of the air outlet cavity.

[0011] In one embodiment, at least two air outlet cavities are provided, and at least two of the air outlet cavities are connected to the air inlet cavity and the air outlet.

[0012] In one embodiment, at least two of the air outlet cavities are disposed close to the air inlet cavity and located on one side of the air inlet cavity.

[0013] In one embodiment, the muffler further includes an outlet flow channel, and the outlet cavity is connected to the inlet cavity and the outlet port through the outlet flow channel.

[0014] In one embodiment, at least a portion of the outlet air passage is disposed between any two adjacent outlet air cavities.

[0015] In one embodiment, the outer wall of the outlet air passage is provided with at least two through holes, and each of the through holes is connected to one of the outlet cavities.

[0016] In one embodiment, the outlet flow channel comprises:

[0017] A first pipe section, connecting the air inlet cavity and the air outlet cavity;

[0018] The second pipe section is connected to the first pipe section and the air outlet, and an extension direction of the first pipe section and an extension direction of the second pipe section are arranged at an angle.

[0019] In one embodiment, the inner angle of the air inlet cavity and / or the air outlet cavity is an arc angle.

[0020] In one embodiment, the housing comprises:

[0021] a first shell;

[0022] The second shell is covered on the first shell and is enclosed with the first shell to form the air inlet, the air outlet, the air inlet cavity and the air outlet cavity.

[0023] In one embodiment, the first shell and / or the second shell is provided with a partition plate, and the partition plate, the inner wall of the first shell and the inner wall of the second shell are combined to form the air inlet cavity and the air outlet cavity.

[0024] In one embodiment, one of the first shell and the second shell is provided with the partition plate, and the other one is provided with a slot, and the partition plate is inserted into the slot.

[0025] In one embodiment, when there are at least two air outlet cavities, the partition plate includes a first partition plate and at least one second partition plate, and the second partition plate is arranged at an angle with the first partition plate.

[0026] The utility model also provides a compressor, comprising a shell and the muffler as described above, wherein the muffler is arranged in the shell.

[0027] The utility model also provides a refrigeration device, comprising the compressor as described above.

[0028] The technical solution of the utility model is to provide an intake air passage in the intake cavity of the shell, and to provide a perforation on the outer wall of the intake air passage. Thus, under the condition of a high airflow velocity of a high-speed model, after the airflow enters the intake air passage from the air inlet, it can diffuse to the surroundings of the intake air passage from the perforation, and the airflow in the intake air passage can be divided and diffused to reduce the airflow velocity, thereby effectively reducing the aerodynamic noise formed at the end of the internal flow passage (intake air passage) of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 A structural schematic diagram of an embodiment of a muffler provided by the utility model;

[0031] Figure 2 An exploded view of an embodiment of a muffler provided by the utility model;

[0032] Figure 3 A schematic diagram of a part of the structure of an embodiment of a muffler provided by the utility model;

[0033] Figure 4 This is another partial structural schematic diagram of an embodiment of a muffler provided by the utility model.

[0034] Description of Figure Numbers:

[0035] 100, silencer; 10, shell; 10a, air inlet; 10b, air outlet; 10c, air inlet cavity; 10d, air outlet cavity; 11, first shell; 111, slot; 12, second shell; 121, partition plate; 1211, first partition plate; 1212, second partition plate; 20, air inlet passage; 20a, perforation; 30, air outlet passage; 30a, through hole; 31, first pipe section; 32, second pipe section.

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), 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 indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, 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 utility model.

[0040] As a household appliance that is essential in daily life, people have increasingly higher requirements for the performance of refrigerators. In addition to its important freezing capacity, the comfort of refrigerators is also one of the key indicators of refrigeration equipment. The noise value, as an important measurement parameter of comfort, has also attracted much attention. Among them, the air noise generated by the compressor during operation is one of the main sources of noise.

[0041] In the related art, a muffler is used to reduce the air noise of a compressor. When the air flow velocity is high, a large impact is easily formed at the end of the flow channel inside the muffler, thereby generating large aerodynamic noise.

[0042] Based on the above problems, the utility model proposes a muffler, which aims to reduce the aerodynamic noise formed at the end of the internal flow channel of the muffler when the air flow velocity is relatively high.

[0043] See also Figures 1 to 3In one embodiment of the utility model, the muffler 100 includes a shell 10 and an inlet flow channel 20; the shell 10 is provided with an air inlet 10a and an air outlet 10b, the direction of the air inlet 10a is set at an angle with the direction of the air outlet 10b, and an air inlet cavity 10c and an air outlet cavity 10d are formed in the shell 10, the air inlet cavity 10c is connected to the air inlet 10a, and the air outlet cavity 10d is connected to the air inlet cavity 10c and the air outlet 10b; the inlet flow channel 20 is arranged in the air inlet cavity 10c, the air inlet flow channel 20 is connected to the air inlet 10a and the air inlet cavity 10c, and the outer wall of the inlet flow channel 20 is provided with a through hole 20a.

[0044] The technical solution of the utility model is to provide an intake air duct 20 in the intake cavity 10c of the shell 10, and to provide a perforation 20a on the outer wall of the intake air duct 20. In this way, under the condition of a high airflow velocity of a high-speed model, after the airflow enters the intake air duct 20 from the air inlet 10a, it can diffuse to the surroundings of the intake air duct 20 from the perforation 20a, and the airflow in the intake air duct 20 can be divided and diffused to reduce the airflow velocity, thereby effectively reducing the aerodynamic noise formed at the end of the internal flow channel (intake air duct 20) of the muffler 100.

[0045] In this embodiment, the air flow direction of the muffler 100 is as follows: the air flow first enters the inlet flow duct 20 from the air inlet port 10a, then flows to the inlet cavity 10c through the end of the inlet flow duct 20 and the perforation 20a on the outer wall, and diffuses in the inlet cavity 10c. The diffused air flow enters the outlet cavity 10d from the inlet cavity 10c, and then is discharged to the outside through the air outlet port 10b.

[0046] In actual application, the air inlet 10a and the air outlet 10b can be arranged on the same side of the housing 10, or on different sides of the housing 10. Moreover, when the air inlet 10a and the air outlet 10b are arranged on different sides of the housing 10, the air inlet 10a and the air outlet 10b can be located on two adjacent sides of the housing 10, or on two opposite sides of the housing 10.

[0047] As some examples, the direction of the air inlet 10a is set at an angle to the direction of the air outlet 10b. Specifically, when the air inlet 10a faces the front of the shell 10, the air outlet 10b can face the left, right, top or bottom of the shell 10.

[0048] In actual application, in the radial direction of the shell 10, the center of the air inlet 10a can be located on the same horizontal plane as the center of the air outlet 10b, or it can be lower or higher than the center of the air outlet 10b. Of course, in some embodiments, the center of the air inlet 10a can be lower than the center of the air outlet 10b. In this way, when the muffler 100 is applied to the compressor, it is not necessary to set up an additional oil return structure. Instead, the lubricating oil can be returned to the compressor through the perforation 20a and the air inlet 10a by the pressure difference when the compressor is stopped, so as to ensure that the compressor can be lubricated in time and the compressor can run efficiently and smoothly.

[0049] In actual application, the opening sizes and shapes of the air inlet 10a and the air outlet 10b may be the same or different. Specifically, the cross-sectional shapes of the air inlet 10a and the air outlet 10b include but are not limited to circular, elliptical, triangular, rectangular, pentagonal, hexagonal, etc.

[0050] In some embodiments, in order to facilitate the connection between the external pipeline and the air inlet 10a, a connector extending to the outside of the housing 10 may be provided at the air inlet 10a, and the connector is used to connect with the external pipeline. Alternatively, the connector may be designed not to be connected with the external pipeline, but to play the role of air guide, so as to smoothly introduce the airflow into the air inlet 10a.

[0051] In actual application, the air inlet cavity 10c and the air outlet cavity 10d can be distributed at intervals along the length direction of the shell 10, or along the width direction of the shell 10, or along the height direction of the shell 10, depending on the actual usage.

[0052] In actual application, the size and cross-sectional shape of the air inlet cavity 10c and the air outlet cavity 10d may be the same or different. Specifically, the cross-sectional shape of the air inlet cavity 10c and the air outlet cavity 10d includes but is not limited to circular, elliptical, rectangular, pentagonal, hexagonal, etc.

[0053] As some examples, the number of perforations 20 a on the intake air passage 20 may be one, two, or more, which may be specifically set according to actual use requirements.

[0054] Furthermore, the cross-sectional shape of the perforation 20a includes but is not limited to circle, ellipse, triangle, rectangle, pentagon, hexagon, etc. Of course, in some embodiments, in order to ensure that the air resistance when the airflow flows through the perforation 20a is small, the cross-sectional shape of the perforation 20a can be made circular.

[0055] In actual application, the intake air channel 20 may include but is not limited to a cylindrical flow channel, a prismatic flow channel, etc. Of course, in some embodiments, in order to ensure the circulation effect of the airflow and reduce the pressure loss of the airflow, the intake air channel 20 may be a cylindrical flow channel.

[0056] See also Figure 2 , Figure 3 In one embodiment of the present invention, the size of the through hole 20a is 0.5 mm to 2 mm.

[0057] With such arrangement, when the size of the perforation 20a is smaller than 0.5 mm, the resistance of the airflow through the smaller perforation 20a will be relatively large, thereby affecting the efficiency of the airflow passing through, and at the same time will also increase the difficulty of designing the perforation 20a on the intake air duct 20; and when the size of the perforation 20a is larger than 2 mm, the effect of the airflow being divided and diffused by the perforation 20a when passing through the larger perforation 20a is poor, and the airflow cannot be evenly diffused to the intake cavity 10c. At the same time, when the size of the perforation 20a is too large, it will also affect the strength of the intake air duct 20 itself, causing the intake air duct 20 to be easily deformed or even broken.

[0058] As some exemplary examples, the size of the perforation 20a can be any one of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, or any value between any two values.

[0059] As some exemplary examples, when the cross-sectional shape of the through-hole 20 a is circular, the size of the through-hole 20 a refers to the diameter of the through-hole 20 a .

[0060] See also Figure 2 , Figure 3 In one embodiment of the present invention, a plurality of through holes 20 a are provided, and the plurality of through holes 20 a are distributed at intervals along the circumferential direction and / or axial direction of the inlet flow passage 20 .

[0061] In this way, by distributing a plurality of perforations 20a at intervals in the circumferential and / or axial directions of the intake air duct 20, that is, distributing a plurality of perforations 20a at intervals on the outer wall of the intake air duct 20, after the airflow enters the intake air duct 20 from the air inlet port 10a, it can be diffused more evenly to the surroundings through the plurality of perforations 20a so as to be fully diffused to the intake cavity 10c, thereby better eliminating the aerodynamic noise formed at the end of the internal flow channel (intake air duct 20) of the muffler 100.

[0062] In actual application, the cross-sectional shapes of the plurality of perforations 20a may be the same or different, for example, the cross-sectional shape of a portion of the perforations 20a is circular, and the cross-sectional shape of another portion of the perforations 20a is elliptical. In addition, the sizes of the plurality of perforations 20a may be the same or different, for example, the size of a portion of the perforations 20a is larger than the size of another portion of the perforations 20a.

[0063] In actual application, the spacing between any two adjacent through-holes 20a may be the same or different. For example, the spacing between any two adjacent through-holes 20a in the circumferential direction is greater than the spacing between any two adjacent through-holes 20a in the axial direction.

[0064] It should be noted that in order to be able to provide a sufficient number of perforations 20a on the intake air duct 20, the distance between two adjacent perforations 20a can be made as small as possible while ensuring a low processing difficulty. For example, the distance between two adjacent perforations 20a can be 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.8mm, 3mm, etc.

[0065] See also Figures 2 to 4 In one embodiment of the present invention, the size of the air inlet cavity 10c is greater than the size of the air outlet cavity 10d.

[0066] Such an arrangement can make the size of the air intake cavity 10c larger, so that the distance between the air intake duct 20 and the inner wall of the air intake cavity 10c is larger, so that the airflow passing through the through hole 20a of the air intake duct 20 can be better diffused to the air intake cavity 10c, avoiding the airflow passing through the through hole 20a from hitting the inner wall of the air intake cavity 10c with a large impact force, thereby generating large aerodynamic noise and airflow transmission loss. At the same time, the larger air intake cavity 10c can make the installation of the air intake duct 20 more convenient.

[0067] As some examples, when the cross-sectional shapes of the air inlet cavity 10c and the air outlet cavity 10d are both rectangular, the length of the air inlet cavity 10c can be made greater than the length of the air outlet cavity 10d, the width of the air inlet cavity 10c can be made greater than the width of the air outlet cavity 10d, or the length and width of the air inlet cavity 10c can be made greater than the length and width of the air outlet cavity 10d, as long as the size of the air inlet cavity 10c is greater than the size of the air outlet cavity 10d.

[0068] See also Figures 2 to 4 In one embodiment of the present invention, at least two air outlet cavities 10d are provided, and at least two air outlet cavities 10d are connected to the air inlet cavity 10c and the air outlet 10b.

[0069] In this way, the air inlet cavity 10c and at least two air outlet cavities 10d can constitute at least three chambers in the housing 10. Since the air inlet cavity 10c is provided with an air inlet channel 20 having a perforation 20a, if only one air outlet cavity 10d is provided, the air inlet cavity 10c and the air outlet cavity 10d can only constitute two chambers in the housing 10, and the air flow transmission loss during the air flow transmission process will be greatly affected. The design of three chambers can ensure that the air flow transmission loss and pressure loss do not change much, which can not only effectively eliminate the low frequency band (0~4000H Z ) can also effectively reduce the mid- and high-frequency bands (5000H Z ~10000H Z ) of the air noise.

[0070] In actual application, the sizes of at least two air outlet cavities 10d may be the same or different, for example, the size of one air outlet cavity 10d is larger than the size of the other air outlet cavity 10d. In addition, the cross-sectional shapes of at least two air outlet cavities 10d may be the same or different, for example, the cross-sectional shapes of the two air outlet cavities 10d are both rectangular, or the cross-sectional shape of one air outlet cavity 10d may be circular, and the cross-sectional shape of the other air outlet cavity 10d may be rectangular.

[0071] In actual application, at least two air outlet cavities 10d can be disposed on the same side of the air inlet cavity 10c, or on different sides of the air inlet cavity 10c. When at least two air outlet cavities 10d are disposed on different sides of the air inlet cavity 10c, at least two air outlet cavities 10d can be disposed on two adjacent sides or two opposite sides of the air inlet cavity 10c.

[0072] See also Figures 2 to 4 In one embodiment of the present invention, at least two air outlet cavities 10d are arranged close to the air inlet cavity 10c and are located on one side of the air inlet cavity 10c.

[0073] Such an arrangement can make at least two air outlet cavities 10d be arranged closer to the air inlet cavity 10c and the air outlet 10b, can be better connected with the air inlet cavity 10c and the air outlet 10b, and can improve the compactness of the overall structure.

[0074] In actual application, the air inlet cavity 10c can be connected to the air outlet cavity 10d through structures such as flow channels, pipelines, and openings.

[0075] See also Figures 2 to 4 In one embodiment of the present invention, the muffler 100 further includes an outlet flow channel 30 , and the outlet cavity 10 d is connected to the inlet cavity 10 c and the outlet port 10 b through the outlet flow channel 30 .

[0076] With such arrangement, the airflow in the air inlet cavity 10 c can be more smoothly guided to the air outlet cavity 10 d through the outlet air passage 30 , and the airflow in the air outlet cavity 10 d can be more smoothly guided to the air outlet 10 b through the outlet air passage 30 .

[0077] In actual application, the outlet flow channel 30 may include but is not limited to a cylindrical flow channel, a prismatic flow channel, etc. Of course, in some embodiments, in order to ensure the circulation effect of the airflow and reduce the pressure loss of the airflow, the outlet flow channel 30 may be a cylindrical flow channel.

[0078] In actual application, the inlet flow channel 20 may be disposed between any two adjacent air outlet cavities 10 d , or may be disposed between one of the air outlet cavities 10 d and the inner wall of the housing 10 .

[0079] In actual application, the outlet flow channel 30 may be a straight flow channel, or a curved or bent flow channel.

[0080] See also Figures 2 to 4 In one embodiment of the present invention, at least a portion of the outlet flow channel 30 is disposed between any two adjacent outlet cavities 10d.

[0081] With such a configuration, by installing at least a portion of the outlet air duct 30 between any two adjacent air outlet cavities 10d, not only can the separation position between any two adjacent air outlet cavities 10d be effectively utilized to improve the compactness of the structure, but the outlet air duct 30 can also be made closer to more air outlet cavities 10d, so that the airflow in the air inlet cavity 10c can be more smoothly guided to each air outlet cavity 10d through the outlet air duct 30, and the airflow in each air outlet cavity 10d can be more smoothly guided to the air outlet 10b through the outlet air duct 30.

[0082] In actual application, the outlet flow channel 30 may be connected to at least two outlet cavities 10d through the same opening, or may be connected to at least two outlet cavities 10d through at least two openings respectively.

[0083] In some embodiments, all of the outlet flow channels 30 may be disposed between any two adjacent outlet cavities 10 d.

[0084] In some other embodiments, part of the outlet air passage 30 is disposed between any two adjacent outlet air cavities 10 d , and part of the outlet air passage 30 protrudes to the outside of the housing 10 .

[0085] See also Figure 4 In one embodiment of the utility model, the outer wall of the outlet air channel 30 is provided with at least two through holes 30a, and each through hole 30a is connected to an outlet cavity 10d.

[0086] With such arrangement, the outlet air duct 30 can be connected with at least two outlet cavities 10d respectively through at least two through holes 30a, and the airflow entering the inlet air duct 20 can enter the corresponding outlet cavity 10d from each through hole 30a, and the airflow in each outlet cavity 10d can enter the outlet air duct 30 from the corresponding through hole 30a and be discharged from the air outlet 10b, so that the circulation effect of the airflow can be better and the transmission loss and pressure loss change of the airflow can be ensured to be smaller.

[0087] In actual application, the sizes of at least two through holes 30a may be the same or different, for example, the size of one through hole 30a is larger than the size of the other through hole 30a. In addition, the cross-sectional shapes of at least two through holes 30a may be the same or different, for example, the cross-sectional shapes of all through holes 30a are rectangular, or the cross-sectional shape of one through hole 30a is rectangular and the cross-sectional shape of the other through hole 30a is circular.

[0088] As some examples, the sizes of at least two through holes 30a can be determined according to the sizes of the corresponding air outlet cavities 10d. For example, when the size of the air outlet cavity 10d is larger, the corresponding through hole 30a can be set to a larger size.

[0089] See also Figures 2 to 4 In one embodiment of the utility model, the outlet flow channel 30 includes a first pipe section 31 and a second pipe section 32; the first pipe section 31 connects the air inlet cavity 10c and the air outlet cavity 10d; the second pipe section 32 connects the first pipe section 31 and the air outlet 10b, and the extension direction of the first pipe section 31 is set at an angle to the extension direction of the second pipe section 32.

[0090] With such arrangement, the direction of the airflow discharge can be adjusted through the second pipe section 32, so that the orientation of the air outlet 10b can be adjusted according to the design of the external structure.

[0091] As some examples, when the shell 10 includes a detachable lower shell 10 (first shell 11) and an upper shell 10 (second shell 12), the first pipe segment 31 can be set in the upper shell 10, and the second pipe segment 32 can be set in the lower shell 10. After the upper shell 10 and the lower shell 10 are assembled, the first pipe segment 31 will be spliced ​​with the second pipe segment 32 to form an outlet flow duct 30.

[0092] In actual application, the inner dimensions of the first pipe segment 31 and the inner dimensions of the second pipe segment 32 may be the same or different. Of course, in some embodiments, in order to reduce airflow loss, the inner dimensions of the first pipe segment 31 and the inner dimensions of the second pipe segment 32 may be the same.

[0093] See also Figures 2 to 4In one embodiment of the present invention, the inner angles of the air inlet cavity 10c and / or the air outlet cavity 10d are arc angles.

[0094] With such arrangement, when the airflow enters the air inlet cavity 10c and the air outlet cavity 10d, the arc angle design can make the airflow flow more smoothly and reduce the transmission loss of the airflow.

[0095] See also Figures 2 to 4 In one embodiment of the utility model, the shell 10 includes a first shell 11 and a second shell 12; the second shell 12 is covered on the first shell 11, and is enclosed with the first shell 11 to form an air inlet 10a, an air outlet 10b, an air inlet cavity 10c and an air outlet cavity 10d.

[0096] With such arrangement, the intake air duct 20 can be installed on the first shell 11 first, and then the second shell 12 can be covered on the first shell 11, so that the intake air duct 20 is located in the intake cavity 10c formed by the first shell 11 and the second shell 12, which makes it easier to install the intake air duct 20.

[0097] In this embodiment, the first shell 11 has an air inlet lower half chamber and an air outlet lower half chamber, and the second shell 12 has an air inlet upper half chamber and an air outlet upper half chamber. When the second shell 12 is covered on the first shell 11, the air inlet lower half chamber and the air inlet upper half chamber constitute an air inlet chamber 10c, and the air outlet lower half chamber and the air outlet upper half chamber constitute an air outlet chamber 10d.

[0098] As some exemplary embodiments, the air inlet 10 a may be disposed on the first shell 11 , and the air outlet 10 b may be disposed on the second shell 12 .

[0099] In actual application, a partition may be provided in the shell 10 to separate the interior of the shell 10 into an air inlet cavity 10c and an air outlet cavity 10d, or the interior of the shell 10 may be hollowed out to obtain the air inlet cavity 10c and the air outlet cavity 10d.

[0100] See also Figure 4 In one embodiment of the utility model, the first shell 11 and / or the second shell 12 is provided with a partition plate 121, and the partition plate 121 and the inner wall of the first shell 11 and the inner wall of the second shell 12 are enclosed to form an air inlet cavity 10c and an air outlet cavity 10d.

[0101] With such arrangement, during the preparation process, the partition plate 121 can be directly formed on the first shell 11 and / or the second shell 12, or the partition plate 121 can be connected to the first shell 11 and / or the second shell 12. When the second shell 12 is covered on the first shell 11, the partition plate 121 and the inner wall of the first shell 11 and the inner wall of the second shell 12 can be used to enclose the air inlet cavity 10c and the air outlet cavity 10d. Compared with the hollowing method, the preparation process of this method is simpler.

[0102] In actual application, the partition plate 121 may be provided only on the inner side of the first shell 11 facing the second shell 12, so that when the second shell 12 is covered on the first shell 11, the partition plate 121 will abut against the inner side of the second shell 12; alternatively, the partition plate 121 may be provided only on the inner side of the second shell 12 facing the first shell 11, so that when the second shell 12 is covered on the first shell 11, the partition plate 121 will abut against the inner side of the first shell 11; alternatively, the partition plate 121 may be provided on the inner side of the first shell 11 facing the second shell 12 and on the inner side of the second shell 12 facing the first shell 11, so that when the second shell 12 is covered on the first shell 11, the partition plate 121 on the first shell 11 will abut against the partition plate 121 on the second shell 12.

[0103] In actual application, the partition plate 121 can be integrally formed with the first shell 11 or the second shell 12, or can be fixedly connected to the first shell 11 or the second shell 12 by bonding, screw connection, snap connection, etc.

[0104] See also Figure 3 , Figure 4 In one embodiment of the utility model, one of the first shell 11 and the second shell 12 is provided with a partition plate 121 , and the other one is provided with a slot 111 , and the partition plate 121 is inserted into the slot 111 .

[0105] With such arrangement, during the assembly process, when the second shell 12 is placed on the first shell 11, the partition plate 121 will be inserted into the slot 111. This can not only improve the sealing performance of the contact position between the partition plate 121 and the first shell 11 or the second shell 12, but also position the assembly of the first shell 11 and the second shell 12 through the cooperation between the partition plate 121 and the slot 111, so as to improve the assembly accuracy between the first shell 11 and the second shell 12.

[0106] In some embodiments, the partition plate 121 is disposed on the first shell 11 , and the slot 111 is disposed on the second shell 12 .

[0107] In some other embodiments, the partition plate 121 is disposed on the second shell 12 , and the slot 111 is disposed on the first shell 11 .

[0108] See also Figure 4 In one embodiment of the utility model, when there are at least two air outlet cavities 10d, the partition plate 121 includes a first partition plate 1211 and at least one second partition plate 1212, and the second partition plate 1212 is arranged at an angle to the first partition plate 1211.

[0109] With such configuration, the interior of the shell 10 can be better divided into at least two air outlet cavities 10d by the first partition 1211 and at least one second partition 1212, so that at least three chambers are formed inside the shell 10 to ensure that the transmission loss and pressure loss of the airflow do not change much.

[0110] As some exemplary embodiments, when two air inlet cavities 10c are provided, only one second partition plate 1212 may be provided, so that the first partition plate 1211 and the second partition plate 1212 may constitute a partition plate 121 having a T-shaped cross section.

[0111] As another example, when there are three or more air inlet cavities 10c, there may be at least two second partitions 1212, so that the first partition 1211 and at least two second partitions 1212 may constitute a partition plate 121 having a comb-like cross-sectional shape.

[0112] The utility model also provides a compressor, which includes a housing and a muffler 100. The specific structure of the muffler 100 refers to the above embodiment. Since the compressor adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the muffler 100 is arranged in the housing.

[0113] As some examples, the compressor also includes a compression structure, and the air inlet 10a of the muffler 100 is used to communicate with the inner cavity of the shell, and the air outlet 10b of the muffler 100 is used to communicate with the compression chamber of the compression structure. In this way, after the airflow enters the muffler 100 from the inner cavity of the shell, it is subjected to silencing and noise reduction processing by the muffler 100 and then enters the compression chamber through the air outlet 10b, which can effectively reduce the air noise generated by the compressor during operation.

[0114] As some examples, the compressor may be a reciprocating compressor.

[0115] The utility model also proposes a refrigeration device, which includes a compressor. The specific structure of the compressor refers to the above embodiment. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0116] Specifically, the refrigeration equipment may be a refrigerator, an air conditioner or the like.

[0117] 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. A muffler, characterized in that: include: A shell body, provided with an air inlet and an air outlet, wherein the direction of the air inlet is arranged at an angle to the direction of the air outlet, and an air inlet cavity and an air outlet cavity are formed in the shell body, wherein the air inlet cavity is connected to the air inlet, and the air outlet cavity is connected to the air inlet cavity and the air outlet; An intake air passage is arranged in the intake cavity, the intake air passage communicates with the intake port and the intake cavity, and an outer wall of the intake air passage is provided with a perforation.

2. The muffler according to claim 1, characterized in that The size of the perforation is 0.5 mm to 2 mm.

3. The muffler according to claim 1, characterized in that: There are a plurality of the through holes, and the plurality of the through holes are distributed at intervals along the circumferential direction and / or axial direction of the intake air passage.

4. The silencer according to any one of claims 1 to 3, characterized in that: The size of the air inlet cavity is greater than the size of the air outlet cavity.

5. The silencer according to any one of claims 1 to 3, characterized in that: At least two air outlet cavities are provided, and at least two of the air outlet cavities are connected to the air inlet cavity and the air outlet.

6. The muffler according to claim 5, characterized in that At least two of the air outlet cavities are arranged close to the air inlet cavity and located on one side of the air inlet cavity.

7. The muffler according to claim 5, characterized in that The muffler further includes an outlet flow passage, and the outlet cavity is connected to the inlet cavity and the outlet through the outlet flow passage.

8. The muffler according to claim 7, characterized in that At least a portion of the outlet air passage is disposed between any two adjacent outlet cavities.

9. The muffler according to claim 7, characterized in that: The outer wall of the outlet air passage is provided with at least two through holes, and each of the through holes is connected to one of the outlet cavities.

10. The muffler according to claim 7, characterized in that The outlet flow channel comprises: A first pipe section, connecting the air inlet cavity and the air outlet cavity; The second pipe section is connected to the first pipe section and the air outlet, and an extension direction of the first pipe section and an extension direction of the second pipe section are arranged at an angle.

11. The silencer according to any one of claims 1 to 3, characterized in that: The inner angles of the air inlet cavity and / or the air outlet cavity are arc angles.

12. The silencer according to any one of claims 1 to 3, characterized in that: The housing comprises: a first shell; The second shell is covered on the first shell and is enclosed with the first shell to form the air inlet, the air outlet, the air inlet cavity and the air outlet cavity.

13. The muffler according to claim 12, characterized in that The first shell and / or the second shell is provided with a partition plate, and the partition plate, the inner wall of the first shell and the inner wall of the second shell are combined to form the air inlet cavity and the air outlet cavity.

14. The muffler according to claim 13, characterized in that One of the first shell and the second shell is provided with the partition plate, and the other one is provided with a slot, and the partition plate is inserted into the slot.

15. The muffler according to claim 13, characterized in that When at least two air outlet cavities are provided, the partition plate includes a first partition plate and at least one second partition plate, and the second partition plate is arranged at an angle with the first partition plate.

16. A compressor, characterized in that: The utility model comprises a shell and a silencer as claimed in any one of claims 1 to 15, wherein the silencer is arranged in the shell.

17. A refrigeration device, characterized in that: Comprising the compressor of claim 16.

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