Suction silencers, compressors and household appliances

Abstract

The present invention discloses an air suction muffler, a compressor, and a household appliance, wherein the air suction muffler includes a shell and a serpentine tube assembly, wherein the shell has a muffler cavity; the serpentine tube assembly is arranged in the muffler cavity and divides the muffler cavity into a first cavity and a second cavity; the serpentine tube assembly includes a serpentine tube, the portion of the serpentine tube located in the first cavity has a first expansion hole, and the portion of the serpentine tube located in the second cavity has a second expansion hole; wherein the serpentine tube has a main flow channel and a secondary flow channel located outside the main flow channel, the main flow channel and the secondary flow channel are connected to the first cavity through the first expansion hole, and are connected to the second cavity through the second expansion hole. The above-mentioned air suction muffler can take into account both noise and energy consumption, and can achieve the effect of having a high energy efficiency ratio while reducing noise.

Description

Technical Field

[0001] The present invention relates to the technical field of mufflers, and in particular to an air suction muffler, a compressor and a household appliance. Background Art

[0002] Refrigerators are a common household appliance in modern life. As living standards improve, people's expectations for refrigerator noise and energy efficiency are also increasing. The compressor is the heart of the refrigerator, and the intake structure is a crucial intake airflow path for the compressor. The design of the intake structure in a compressor must consider not only noise, but also cooling capacity and energy efficiency (COP). Balancing noise and energy efficiency has become a key research topic in compressor intake structure design. Summary of the Invention

[0003] The main purpose of the present invention is to provide an air suction muffler, aiming to take both noise and energy consumption into consideration.

[0004] To achieve the above-mentioned object, the suction muffler proposed by the present invention comprises:

[0005] a housing having a sound-absorbing cavity; and

[0006] a serpentine tube assembly disposed in the muffler cavity and dividing the muffler cavity into a first cavity and a second cavity, the serpentine tube assembly comprising a serpentine tube, a portion of the serpentine tube located in the first cavity having a first expansion hole, and a portion of the serpentine tube located in the second cavity having a second expansion hole;

[0007] The serpentine tube has a main channel and a secondary channel located outside the main channel. The main channel and the secondary channel are connected to the first cavity through the first expansion hole and are connected to the second cavity through the second expansion hole.

[0008] In one embodiment, the serpentine tube is located at an end portion of the first cavity and is spaced apart from an inner wall of the first cavity to form the first expansion hole.

[0009] In one embodiment, the portion of the serpentine tube located in the second cavity is disconnected to form the second expansion hole.

[0010] In one embodiment, there are a plurality of secondary flow channels, and the plurality of secondary flow channels are arranged at intervals and surround the primary flow channel.

[0011] In one embodiment, the cross-section of the secondary flow channel is circular, arc-shaped or irregularly shaped, and the irregular shape includes a first arc segment, a second arc segment, a third arc segment and a fourth arc segment connected end to end in sequence, the first arc segment corresponds to the third arc segment and constitutes the arc-shaped portion of the irregular shape, and the second arc segment and the fourth arc segment correspond to and constitute two circular portions of the irregular shape.

[0012] In one embodiment, the serpentine tube assembly further includes a partition plate, which is disposed in the muffler cavity and divides the muffler cavity into the first cavity and the second cavity, and the serpentine tube is disposed on the partition plate.

[0013] In one embodiment, the serpentine tube includes a first serpentine portion and a second serpentine portion connected to each other, the first serpentine portion has a first main groove, the second serpentine portion has a second main groove, and the first main groove and the second main groove enclose each other to form the main channel.

[0014] In one embodiment, the first serpentine portion further has a first auxiliary groove, and the second serpentine portion further has a second auxiliary groove, and the first auxiliary groove and the second auxiliary groove are enclosed to form the auxiliary flow channel.

[0015] In one embodiment, the first serpentine portion has one of a slot and an inserting block, and the second serpentine portion has the other of a slot and an inserting block, and the slot is plugged into the inserting block.

[0016] In one embodiment, the serpentine tube assembly further includes a first partition provided on the first serpentine portion and a second partition provided on the second serpentine portion, the first partition being connected to the second partition and constituting a partition plate that divides the silencer chamber into the first cavity and the second cavity.

[0017] In one embodiment, the first serpentine portion and the first partition portion are integrally formed, and the second serpentine portion and the second partition portion are integrally formed.

[0018] In one embodiment, the suction muffler further includes an inlet pipe and an outlet pipe, wherein the inlet pipe is communicated with the first cavity, and the outlet pipe is connected to and communicated with an end of the serpentine pipe away from the inlet pipe;

[0019] The inlet pipe has a first flow channel and a second flow channel located outside the first flow channel, and the first flow channel and the second flow channel are both connected to one end of the serpentine pipe located in the first cavity; and / or

[0020] The outlet pipe has a third flow channel and a fourth flow channel located outside the third flow channel. The third flow channel and the fourth flow channel are both communicated with at least one of the main flow channel and the secondary flow channel.

[0021] The present invention also provides a compressor comprising the suction muffler as described above.

[0022] The present invention also provides a household appliance comprising the above-mentioned compressor.

[0023] When the above-mentioned suction silencer is used, the refrigerant entering the silencer cavity can be transmitted through the flow channel of the serpentine tube and then discharged from the silencer cavity. Among them, the refrigerant can be silenced for the first time through the first cavity and the first expansion hole, and for the second time through the second cavity and the second expansion hole, so that the above-mentioned suction silencer has a good silencer effect and can reduce the suction noise of the compressor. Moreover, compared with the flow channel that only includes the main flow channel, the composite flow channel that includes both the main flow channel and the secondary flow channel has a smaller fluid flow resistance, a higher cooling capacity, and a lower input force, thereby improving the energy efficiency ratio of the compressor. Compared with the flow channel that only includes a large inner diameter (whose flow area is roughly the same as the sum of the flow area of ​​the main flow channel and the flow area of ​​the secondary flow channel), the composite flow channel that includes both the main flow channel and the secondary flow channel has an increased acoustic impedance and a better silencer effect. Therefore, the above-mentioned suction silencer can take into account both noise and energy consumption, and can achieve a high energy efficiency ratio while reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0025] Figure 1 This is a schematic exploded perspective view of an air intake muffler according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A perspective exploded schematic diagram of the serpentine tube assembly shown;

[0027] Figure 3 for Figure 1 The assembly diagram of the serpentine tube assembly shown;

[0028] Figure 4 for Figure 3 A top view of the serpentine assembly is shown;

[0029] Figure 5 for Figure 4 Schematic diagram of the local structure;

[0030] Figure 6 for Figure 5 Schematic diagram of the decomposition;

[0031] Figure 7 A top view of a serpentine tube assembly according to another embodiment of the present invention;

[0032] Figure 8 FIG. 1 is a top view of a serpentine tube assembly according to another embodiment of the present invention.

[0033] Description of Figure Numbers:

[0034] Label name Label name 10 Suction muffler 200 shell 300 Serpentine tube assembly 202 Silencer 202a First cavity 202b Second cavity 302 Serpentine tube 310 First expansion hole 320 Second expansion hole 330 Main channel 340 Secondary runner 302a first tube body 302b Second tube body 3022 First serpentine part 3024 Second serpentine part 3022a First main slot 3022b First auxiliary slot 3024a Second main slot 3024b Second auxiliary slot 3022c slots 3024c plug-in block 304 Divider 3042 First partition 3044 Second partition 3022d Paragraph 1 3022e Second paragraph 3024d Paragraph 3 3024e Paragraph 4 3022f First gap 3024f Second gap 400 Inlet pipe 204 air intake 500 outlet pipe 206 air outlet 210 First shell 220 Second shell

[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] 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 under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] 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 for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. 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 mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The present invention provides an air suction muffler.

[0040] In the embodiment of the present invention, Figures 1-4 As shown, the suction muffler 10 includes a housing 200 and a serpentine pipe assembly 300 .

[0041] The housing 200 has a sound-absorbing chamber 202 .

[0042] The serpentine tube assembly 300 is disposed in the muffler chamber 202 and divides the muffler chamber 202 into a first cavity 202a and a second cavity 202b.

[0043] The serpentine tube assembly 300 includes a serpentine tube 302. The portion of the serpentine tube 302 located within the first cavity 202a has a first expansion hole 310. The portion of the serpentine tube 302 located within the second cavity 202b has a second expansion hole 320. The serpentine tube 302 has a primary flow channel 330 and a secondary flow channel 340 located outside the primary flow channel 330. It should be noted that in this embodiment, the serpentine tube 302 has an S-shaped structure or a quasi-S-shaped structure. Accordingly, in this embodiment, both the primary flow channel 330 and the secondary flow channel 340 have an S-shaped structure or a quasi-S-shaped structure.

[0044] The main channel 330 and the secondary channel 340 are connected to the first cavity 202a through the first expansion hole 310. That is, the main channel 330 located in the first cavity 202a is connected to the first cavity 202a through the first expansion hole 310, and the secondary channel 340 located in the first cavity 202a is connected to the first cavity 202a through the first expansion hole 310. The main channel 330 and the secondary channel 340 are connected to the second cavity 202b through the second expansion hole 320. That is, the main channel 330 located in the second cavity 202b is connected to the second cavity 202b through the second expansion hole 320, and the secondary channel 340 located in the second cavity 202b is connected to the second cavity 202b through the second expansion hole 320.

[0045] When the suction muffler 10 is used, the refrigerant entering the muffler chamber 202 can be transported through the flow channel of the serpentine tube 302 and then discharged from the muffler chamber 202. The refrigerant can be initially muffled through the first cavity 202a and the first expansion hole 310, and then muffled through the second cavity 202b and the second expansion hole 320. Thus, the suction muffler 10 has a good muffler effect and can reduce the suction noise of the compressor. Furthermore, compared to a flow channel comprising only the main flow channel 330, the composite flow channel comprising both the main flow channel 330 and the secondary flow channel 340 has a lower fluid flow resistance, a higher cooling capacity, and a lower input force, thereby improving the energy efficiency ratio of the compressor. Furthermore, compared to a flow channel comprising only a large inner diameter (whose flow area is approximately the same as the sum of the flow areas of the main flow channel 330 and the secondary flow channel 340), the composite flow channel comprising both the main flow channel 330 and the secondary flow channel 340 has an increased acoustic impedance and a better muffler effect. Therefore, the above-mentioned intake muffler 10 can take into account both noise and energy consumption, and can achieve the effect of having a high energy efficiency ratio while reducing noise.

[0046] In this embodiment, the end of the serpentine tube 302 located in the first cavity 202a is spaced apart from the inner wall of the first cavity 202a to form a first expansion hole 310. This not only facilitates the formation of the first expansion hole 310, but also reduces the difficulty of assembling the end of the serpentine tube 302 located in the first cavity 202a with the inner wall of the first cavity 202a (the end of the serpentine tube 302 located in the first cavity 202a and the inner wall of the first cavity 202a are relatively difficult to seal).

[0047] In some embodiments, first expansion hole 310 is provided on the wall of serpentine tube 302 located in first cavity 202a. In this case, the end of serpentine tube 302 located in first cavity 202a can be spaced apart from the inner wall of first cavity 202a to form first expansion hole 310. In other words, there are two first expansion holes 310: one first expansion hole 310 provided at the end of serpentine tube 302 located in first cavity 202a, and one first expansion hole 310 provided on the wall of serpentine tube 302 located in first cavity 202a.

[0048] In this embodiment, the portion of the serpentine tube 302 located in the second cavity 202b is disconnected to form the second expansion hole 320. This facilitates not only the formation of the second expansion hole 320 but also the formation of the serpentine tube 302. Because the portion of the serpentine tube 302 located in the second cavity 202b is disconnected to form the second expansion hole 320, the serpentine tube 302 can be considered to include a first tube body 302a and a second tube body 302b, which are spaced apart and arranged at one end of the second cavity 202b. Compared to directly manufacturing a longer serpentine tube 302, manufacturing shorter first and second tube bodies 302a, 302b is less complex and more convenient for the formation of the serpentine tube 302. It is understood that in other embodiments, the second expansion hole 320 can also be formed in the wall of the serpentine tube 302 located in the second cavity 202b, without disconnecting the serpentine tube 302 at the second expansion hole 320.

[0049] Specifically, in this embodiment, the first tube body 302a and the second tube body 302b both have an S-shaped structure or an S-shaped-like structure.

[0050] In this embodiment, multiple secondary flow channels 340 are arranged at intervals and surround the primary flow channel 330. Compared to providing only one secondary flow channel 340 outside the primary flow channel 330, arranging multiple secondary flow channels 340 at intervals and surrounding the primary flow channel 330 better balances noise and energy consumption. Specifically, in this embodiment, the multiple secondary flow channels 340 are arranged at equal intervals. This ensures a more uniform flow of refrigerant around the periphery of the primary flow channel 330.

[0051] In some embodiments, as Figures 1-6As shown, there is one main flow channel 330 , and the cross-section of the main flow channel 330 is circular. There are two secondary flow channels 340 , and the cross-section of the secondary flow channels 340 is arc-shaped (arc-shaped ring).

[0052] In some embodiments, as Figure 7 As shown, there is one main channel 330 with a circular cross-section, and ten secondary channels 340 with a circular (ring) cross-section. Thus, the cross-section of the serpentine tube 302 may have a lotus root-like pattern.

[0053] In some embodiments, as Figure 8 As shown, the cross-sectional shape of the secondary flow channel 340 is irregular (irregular ring). The irregular shape includes a first arc segment 340a, a second arc segment 340b, a third arc segment 340c, and a fourth arc segment 340d connected end to end. The first arc segment 340a and the third arc segment 340c correspond to and constitute an irregular arc portion, and the second arc segment 340b and the fourth arc segment correspond to and constitute two irregular circular portions 340d. In this case, it can be considered that the middle portion of the irregular shape is arc-shaped and the two ends of the irregular shape are circular. Specifically, in this embodiment, the number of the main flow channel 330 is one, and the cross-sectional shape of the main flow channel 330 is circular. The number of the secondary flow channels 340 is five, and the cross-sectional shape of the secondary flow channels 340 is irregular.

[0054] In the above embodiment, the cross-sectional shape of the secondary flow channel 340 is circular, arc-shaped or irregular. It is understandable that the cross-sectional shape of the secondary flow channel 340 is not limited to the above forms, but can also be any other regular or irregular shape. In the above embodiment, the number of main channels 330 is one, and the cross-sectional shape of the main channels 330 is circular. It is understandable that the number of main channels 330 is not limited to one, and the number of main channels 330 can also be multiple (greater than or equal to two). When the number of main channels 330 is multiple, the multiple main channels 330 are arranged at intervals. It is understandable that the cross-sectional shape of the main channel 330 is not limited to a circle, but can also be any other regular or irregular shape, such as the above-mentioned arc shape and the above-mentioned irregular shape.

[0055] In this embodiment, if Figure 3-Figure 6 As shown, the serpentine tube 302 includes a first serpentine portion 3022 and a second serpentine portion 3024. The first serpentine portion 3022 has a first main groove 3022a. The second serpentine portion 3024 has a second main groove 3024a. The first main groove 3022a and the second main groove 3024a enclose a main channel 330. Thus, when manufacturing the serpentine tube 302, the first serpentine portion 3022 and the second serpentine portion 3024 can be first manufactured, and then the first serpentine portion 3022 and the second serpentine portion 3024 can be connected together. Compared with directly manufacturing the entire serpentine tube 302, the serpentine tube 302 with the above structure is more convenient to obtain.

[0056] In this embodiment, at least a portion of the secondary flow channel 340 is formed on the first serpentine portion 3022, and at least a portion of the secondary flow channel 340 is also formed on the second serpentine portion 3024. That is, the first serpentine portion 3022 can be used to form the secondary flow channel 340, and the second serpentine portion 3024 can also be used to form the secondary flow channel 340. For example, the first serpentine portion 3022 can have at least one secondary flow channel 340, and the second serpentine portion 3024 can have at least one secondary flow channel 340. For another example, a portion of a secondary flow channel 340 is located on the first serpentine portion 3022, while another portion of the secondary flow channel 340 is located on the second serpentine portion 3024.

[0057] In this embodiment, the first serpentine portion 3022 further includes a first sub-groove 3022b located outside the first main groove 3022a, and the second serpentine portion 3024 further includes a second sub-groove 3024b located outside the second main groove 3024a. The first sub-groove 3022b and the second sub-groove 3024b together form the secondary flow channel 340. This greatly facilitates the manufacture of the secondary flow channel 340.

[0058] It is understandable that in other embodiments, the first auxiliary groove 3022b and the second auxiliary groove 3024b may be omitted. In this case, the auxiliary flow channel 340 may be provided on at least one of the first serpentine portion 3022 and the second serpentine portion 3024 .

[0059] It can be understood that in other embodiments, the serpentine tube 302 has both a secondary flow channel 340 formed by the first secondary groove 3022b and the second secondary groove 3024b, and a secondary flow channel 340 located on at least one of the first serpentine portion 3022 and the second serpentine portion 3024.

[0060] In this embodiment, the first serpentine portion 3022 has a slot 3022c, and the second serpentine portion 3024 has an insert 3024c. The slot 3022c plugs into the insert 3024c. This facilitates connecting the first serpentine portion 3022 and the second serpentine portion 3024. Specifically, in this embodiment, after the slot 3022c plugs into the insert 3024c, the first serpentine portion 3022 and the second serpentine portion 3024 are connected together by welding. It is understood that in other embodiments, the first serpentine portion 3022 may have the insert 3024c, while the second serpentine portion 3024 may have the slot 3022c, and the slot 3022c plugs into the insert 3024c.

[0061] In this embodiment, the serpentine tube assembly 300 further includes a first partition 3042 provided on the first serpentine portion 3022 and a second partition 3044 provided on the second serpentine portion 3024. The first partition 3042 and the second partition 3044 are connected to form a partition plate 304 that divides the muffler chamber 202 into the first cavity 202a and the second cavity 202b. This not only greatly facilitates the serpentine tube assembly 300 in dividing the muffler chamber 202 into the first cavity 202a and the second cavity 202b, but also greatly facilitates securing the serpentine tube 302 within the muffler chamber 202.

[0062] In this embodiment, if Figure 2 As shown, the first serpentine portion 3022 is integrally formed with the first partition portion 3042, and the second serpentine portion 3024 is integrally formed with the second partition portion 3044. In this way, it is easier to obtain the serpentine tube assembly 300.

[0063] In this embodiment, the first serpentine portion 3022 includes a first section 3022d and a second section 3022e, one end of the first section 3022d and one end of the second section 3022e are both arranged on the first partition portion 3042, and the other end of the first section 3022d and the other end of the second section 3022e are disconnected to form a first notch 3022f.

[0064] The second serpentine portion 3024 includes a third segment 3024d and a fourth segment 3024e. One end of the third segment 3024d and one end of the fourth segment 3024e are both disposed on the second partition 3044. The other ends of the third segment 3024d and the fourth segment 3024e are disconnected to form a second notch 3024f. The second expansion hole 320 includes a first notch 3022f and a second notch 3024f.

[0065] In this embodiment, one end of the first segment 3022d and the second segment 3022e provided on the first partition 3042 is arranged along the first direction, and one end of the third segment 3024d and the fourth segment 3024e provided on the second partition 3044 is arranged along the first direction. The first partition 3042 and the second partition 3044 are arranged along the second direction, and the first direction intersects the second direction. Specifically, in this embodiment, the first direction is perpendicular to the second direction.

[0066] It is understood that in other embodiments, the serpentine tube assembly 300 further includes a partition plate 304. The partition plate 304 is disposed in the muffler chamber 202 and divides the muffler chamber 202 into a first cavity 202a and a second cavity 202b. The serpentine tube 302 is disposed on the partition plate 304. In this case, the structure of the serpentine tube 302 is not limited to Figures 1-4 In the structure of the embodiment shown, the serpentine tube 302 can be of any reasonable structure.

[0067] In this embodiment, if Figure 1 As shown, the suction muffler 10 further includes an inlet pipe 400. The inlet pipe 400 is in communication with the first cavity 202a. Specifically, in this embodiment, the inlet pipe 400 has a first flow channel and a second flow channel located outside the first flow channel. Both the first flow channel and the second flow channel are in communication with one end of the serpentine pipe 302 located in the first cavity 202a. The provision of the inlet pipe 400 is very convenient for discharging the refrigerant into the suction muffler 10. The inlet pipe 400 including the first flow channel and the second flow channel is more conducive to taking into account both noise and energy consumption, and can achieve a high energy efficiency ratio while reducing noise.

[0068] Specifically, in this embodiment, one end of the inlet pipe 400 located in the first cavity 202a is spaced from one end of the serpentine pipe 302 located in the first cavity 202a, and forms the first expansion hole 310. In this way, the first expansion hole 310 is formed very conveniently.

[0069] In this embodiment, the housing 200 has an air inlet 204 that communicates with the first cavity 202a. The inlet pipe 400 is provided through the air inlet 204, and one end of the inlet pipe 400 extends into the first cavity 202a. In this way, it is very convenient for the inlet pipe 400 to communicate with the first cavity 202a through the air inlet 204. It is understood that in other embodiments, the end of the inlet pipe 400 close to the serpentine pipe assembly 300 may not extend into the first cavity 202a, but may be accommodated in the air inlet 204. It should be noted that in this embodiment, the outer wall of the inlet pipe 400 is sealed with the inner wall of the air inlet 204. For example, the inlet pipe 400 and the air inlet 204 have an interference fit.

[0070] In this embodiment, the design of the first flow channel is substantially the same as that of the primary flow channel 330 described above, while the design of the second flow channel is substantially the same as that of the secondary flow channel 340 described above, and will not be described in detail here. For example, there may be multiple second flow channels, each of which is spaced apart and surrounds the first flow channel. For another example, the multiple second flow channels may be equally spaced, and the cross-section of the second flow channels may be circular, arc-shaped, or irregularly shaped. For another example, there may be only one first flow channel, each of which may be circular in cross-section.

[0071] When the above-mentioned suction muffler 10 is arranged in the shell of the compressor, the suction mode of the compressor can be direct suction or semi-direct suction. In the direct suction process, the end face of the inlet pipe 400 located outside the silencer chamber 202 is attached to the inner wall of the compressor shell, so that the refrigerant can enter the silencer chamber 202 directly through the inlet pipe 400 through the suction port on the compressor shell. In the semi-direct suction process, the end face of the inlet pipe 400 located outside the silencer chamber 202 is separated from the inner wall of the compressor shell by a certain distance, so that the refrigerant can enter the shell through the suction port on the compressor shell and then enter the silencer chamber 202 indirectly through the inlet pipe 400.

[0072] In this embodiment, the compressor including the above-mentioned intake silencer 10 can adopt both a direct intake and a semi-direct intake. Specifically, in this embodiment, the inlet pipe 400 is a straight pipe. In other embodiments, the inlet pipe 400 includes a tube body and a trumpet portion. The first flow channel and the second flow channel are located on the tube body. One end of the tube body is passed through the air inlet 204. The trumpet portion is provided on the other end of the tube body. The provision of the trumpet portion makes it very convenient for the inlet pipe 400 to be attached to the inner wall of the compressor casing through the trumpet portion, thereby making it easier for the compressor including the above-mentioned intake silencer 10 to adopt a direct intake.

[0073] In this embodiment, if Figure 1 As shown, the suction muffler 10 further includes an outlet pipe 500. The outlet pipe 500 is connected to and in communication with an end of the serpentine pipe 302 away from the inlet pipe 400.

[0074] In this embodiment, the outlet pipe 500 includes a third flow channel and a fourth flow channel located outside the third flow channel. Both the third flow channel and the fourth flow channel are connected to at least one of the primary flow channel 330 and the secondary flow channel 340. Providing the outlet pipe 500 facilitates the discharge of refrigerant from the suction muffler 10. The outlet pipe 500, including both the third and fourth flow channels, is more conducive to balancing noise and energy consumption, achieving both noise reduction and a high energy efficiency ratio.

[0075] In this embodiment, the housing 200 has an air outlet 206, which is connected to the end of the serpentine tube 302 away from the inlet tube 400. The air outlet pipe 500 is disposed through the air outlet 206. This facilitates the air outlet pipe 500 to communicate with the end of the serpentine tube 302 away from the inlet tube 400 through the air outlet 206.

[0076] In this embodiment, the design of the third flow channel is substantially the same as that of the primary flow channel 330 described above, while the design of the fourth flow channel is substantially the same as that of the secondary flow channel 340 described above, and will not be described in detail here. For example, there may be multiple fourth flow channels, each of which is spaced apart and surrounds the third flow channel. For another example, the multiple fourth flow channels may be equally spaced, and the cross-section of the fourth flow channel may be circular, arc-shaped, or irregularly shaped. For another example, there may be only one third flow channel, each of which may be circular in cross-section.

[0077] In this embodiment, the inlet pipe 400 is a straight pipe, and the outlet pipe 500 is also a straight pipe. It is understood that in other embodiments, at least one of the inlet pipe 400 and the outlet pipe 500 can also be a curved pipe.

[0078] In this embodiment, if Figure 1As shown, the first cavity 202a and the second cavity 202b are arranged along the third direction. The shell 200 includes a first shell portion 210 and a second shell portion 220, and the first shell portion 210 and the second shell portion 220 are connected in the second direction and enclosed to form the silencer cavity 202. The second direction intersects with the third direction. Specifically, in this embodiment, the second direction is perpendicular to the third direction. More specifically, in this embodiment, the first direction is the front-to-back direction, the second direction is the up-down direction, and the third direction is the left-to-right direction. The shell 200 includes a first shell portion 210 and a second shell portion 220 arranged in an upper and lower position, that is, the above-mentioned suction muffler 10 is an upper and lower suction muffler. The shell 200 includes a first shell portion 210 and a second shell portion 220 arranged in an upper and lower position, which is not only very convenient for manufacturing the shell 200, but also very convenient for arranging the serpentine pipe assembly 300 in the shell 200.

[0079] In this embodiment, the air inlet 204 is located on the first shell portion 210 , and the air outlet 206 is located on the second shell portion 220 .

[0080] The present invention further provides a compressor, which includes the above-mentioned suction muffler 10. The above-mentioned suction muffler 10 is arranged in a shell of the compressor.

[0081] The present invention also provides a household appliance comprising the above-mentioned compressor. In some embodiments, the household appliance may be a refrigerator. In some embodiments, the household appliance may be an air conditioner. In some embodiments, the household appliance may be a humidifier.

[0082] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present description and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An air suction muffler, characterized in that: include: a housing having a sound-absorbing cavity; as well as a serpentine tube assembly disposed in the muffler cavity and dividing the muffler cavity into a first cavity and a second cavity, the serpentine tube assembly comprising a serpentine tube, a portion of the serpentine tube located in the first cavity having a first expansion hole, and a portion of the serpentine tube located in the second cavity having a second expansion hole; In which, the serpentine tube has a main channel and a secondary channel, the main channel and the secondary channel are connected to the first cavity through the first expansion hole, and are connected to the second cavity through the second expansion hole, and the main channel and the secondary channel can transport refrigerant separately. One main channel is provided, and multiple secondary channels are provided, and the multiple secondary channels are arranged at intervals and surround the main channel.

2. The suction muffler according to claim 1, characterized in that The serpentine tube is located at an end portion of the first cavity and is spaced apart from an inner wall of the first cavity to form the first expansion hole.

3. The suction muffler according to claim 1, wherein: The portion of the serpentine tube located in the second cavity is disconnected to form the second expansion hole.

4. The suction muffler according to claim 1, wherein: The serpentine tube assembly further includes a partition plate, which divides the muffler cavity into the first cavity and the second cavity, and the serpentine tube is arranged on the partition plate.

5. The suction muffler according to claim 1, wherein: The serpentine tube includes a first serpentine portion and a second serpentine portion connected to each other. The first serpentine portion has a first main groove, and the second serpentine portion has a second main groove. The first main groove and the second main groove enclose each other to form the main channel.

6. The suction muffler according to claim 5, characterized in that The first serpentine portion further has a first auxiliary groove, and the second serpentine portion further has a second auxiliary groove. The first auxiliary groove and the second auxiliary groove are enclosed to form the auxiliary flow channel.

7. The suction muffler according to claim 5, characterized in that The first serpentine portion and the second serpentine portion are plugged into the inserting block via a slot.

8. The suction muffler according to claim 5, wherein: The serpentine tube assembly also includes a first partition provided on the first serpentine portion and a second partition provided on the second serpentine portion. The first partition is connected to the second partition and constitutes a partition plate that divides the muffler cavity into the first cavity and the second cavity.

9. The suction muffler according to any one of claims 1 to 8, characterized in that: The suction muffler further includes an inlet pipe and an outlet pipe, wherein the inlet pipe is connected to the first cavity, and the outlet pipe is connected to and docked with an end of the serpentine pipe away from the inlet pipe. The inlet pipe has a first flow channel and a second flow channel, and the first flow channel and the second flow channel are both connected to one end of the serpentine pipe located in the first cavity; and / or The outlet pipe has a third flow channel and a fourth flow channel, and both the third flow channel and the fourth flow channel are communicated with at least one of the main flow channel and the secondary flow channel.

10. A compressor, characterized in that: The invention comprises an air suction muffler as claimed in any one of claims 1 to 9.

11. A household appliance, characterized in that: Comprising the compressor of claim 10.

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