CN214577601U - Silencer with improved structure - Google Patents

Abstract

The utility model discloses a silencer, which comprises a shell component, a baffle component and a coil pipe, wherein a cavity is arranged in the shell component, an air suction port is arranged at the bottom of the shell component, an air exhaust port is arranged at the top of the shell component, the air suction port and the air exhaust port are both communicated with the cavity, the baffle component divides the cavity into a first silencing cavity and a second silencing cavity, the first silencing cavity is positioned above the second silencing cavity, the coil pipe comprises a first pipe section, the first pipe section is located in the first silencing cavity, the second pipe section is located in the second silencing cavity, one end of the first pipe section is communicated with the exhaust port, the other end of the first pipe section is communicated with one end of the connecting pipe section, the other end of the connecting pipe section penetrates through the partition plate assembly and is communicated with one end of the second pipe section, the other end of the second pipe section is communicated with the air suction port, a first through hole is formed in the first pipe section, and a second through hole is formed in the second pipe section. The utility model discloses a muffler has better noise reduction effect in well low frequency channel, has reduced the noise of compressor.

Description

Silencer with improved structure

Technical Field

The utility model relates to a compressor amortization technical field specifically, relates to a muffler.

Background

Refrigerator noise mainly comes from the refrigerator compressor, which is equipped with a muffler in order to reduce the noise of the refrigerator compressor. However, the suction process of the refrigerator compressor in the related art mainly generates middle and low frequency noise (500Hz-1600Hz), and the silencer has poor silencing performance in the middle and low frequency bands.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the utility model provides a silencer, this silencer has better noise cancelling effect in well low frequency channel, has reduced the noise of compressor.

According to the utility model discloses muffler includes: the air conditioner comprises a shell assembly, a fan blade, a motor and the like, wherein a cavity is arranged in the shell assembly, an air suction port is arranged at the bottom of the shell assembly, an air exhaust port is arranged at the top of the shell assembly, and an exhaust port is arranged at the top of the shell assembly, and the air inlet and the exhaust port are both communicated with the cavity; the baffle plate assembly is arranged in the cavity to divide the cavity into a first silencing cavity and a second silencing cavity, and the first silencing cavity is positioned above the second silencing cavity; the coil pipe comprises a first pipe section, a second pipe section and a connecting pipe section, the first pipe section is located in the first silencing cavity, the second pipe section is located in the second silencing cavity, one end of the first pipe section is communicated with the exhaust port, the other end of the first pipe section is communicated with one end of the connecting pipe section, the other end of the connecting pipe section penetrates through the partition plate assembly and is communicated with one end of the second pipe section, the other end of the second pipe section is communicated with the air suction port, a first through hole communicated with the first silencing cavity is formed in the first pipe section, and a second through hole communicated with the second silencing cavity is formed in the second pipe section.

According to the utility model discloses muffler, muffler have better noise reduction at well low frequency channel (500Hz-1600Hz), have reduced the noise of compressor, have promoted compressor wholeness ability.

In some embodiments, the direction of extension of the first tube segment and the direction of extension of the second tube segment are parallel.

In some embodiments, the first through hole is provided in the middle of the extending direction of the first pipe section.

In some embodiments, the second through-hole is provided in the second tube section at a location adjacent to the suction opening.

In some embodiments, the housing assembly includes a first housing having a first cavity and a second housing having a second cavity, the first housing and the second housing being connected such that the first cavity and the second cavity are combined to form the cavity of the housing assembly, one of the suction port and the exhaust port is provided on the first housing, and the other of the suction port and the exhaust port is provided on the second housing.

In some embodiments, the coil has an inner lumen, the coil includes a first wall having a first lumen and a second wall having a second lumen, and two sidewalls of the first wall and two sidewalls of the second wall are correspondingly connected to form the inner lumen of the coil.

In some embodiments, the partition plate assembly is provided with a through hole for the coil to pass through, the partition plate assembly comprises a first partition plate and a second partition plate, the first partition plate is provided with a first groove, the second partition plate is provided with a second groove, and the first partition plate and the second partition plate are connected to form the through hole by splicing the first groove and the second groove.

In some embodiments, the ratio of the height of the first sound-deadening chamber to the height of the second sound-deadening chamber is one-third to two-thirds.

In some embodiments, the coil is a round tube, and the coil has an inner diameter of 6mm to 8 mm.

In some embodiments, an oil leakage hole is formed in the bottom of the housing assembly, and the oil leakage hole is communicated with the second silencing cavity and is used for allowing lubricating oil flowing into the second silencing cavity to flow out.

Drawings

Fig. 1 is an exploded schematic view of a muffler according to an embodiment of the present invention.

Fig. 2 is a perspective view of the muffler of fig. 1.

Fig. 3 is a schematic view of the internal structure of the silencer of fig. 1.

FIG. 4 is a schematic front view of the coil and baffle assembly of the muffler of FIG. 1.

FIG. 5 is a perspective view of the coil and baffle assembly of the muffler of FIG. 1.

Fig. 6 is a graph of acoustic power at the suction port and mid-low band frequencies for a compressor employing the silencer of fig. 1.

Fig. 7 is a graph of acoustic power and high band frequency at the suction port of a compressor employing the silencer of fig. 1.

Reference numerals:

a housing assembly 1; a first housing 11; a second housing 12; a first muffling chamber 13; a second muffling chamber 14;

a bulkhead assembly 2; a first separator 21; a second separator 22;

a coil 3; the first tube wall 31; a second tube wall 32; a first tube section 33; a first through hole 331; a connecting pipe section 34; a second tube section 35; a second through hole 351;

an air suction port 4;

and an exhaust port 5.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 7, a muffler according to an embodiment of the present invention includes a housing assembly 1, a baffle assembly 2, and a coil 3.

Be equipped with the cavity in the casing subassembly 1, the bottom of casing subassembly 1 is equipped with induction port 4, and the top of casing subassembly 1 is equipped with gas vent 5, and induction port 4 all communicates with the cavity with gas vent 5. Specifically, the housing unit 1 is provided with an air inlet 4 and an air outlet 5, and as shown in fig. 1 and 2, the housing unit 1 has a front-rear direction, a left-right direction, and an up-down direction in the present embodiment. The air inlet 4 is disposed at the bottom of the casing assembly 1 and located at the front side of the casing assembly 1 in this embodiment, and the air outlet 5 is disposed at the top of the casing assembly 1 and located at the top surface of the casing assembly 1 in this embodiment.

The diaphragm assembly 2 is disposed within the cavity to divide the cavity into a first muffling chamber 13 and a first muffling chamber 13, the first muffling chamber 13 being located above the first muffling chamber 13. Specifically, as shown in fig. 3, the diaphragm assembly 2 is provided in the cavity of the housing assembly 1, the diaphragm assembly 2 is arranged substantially horizontally, and the diaphragm assembly 2 divides the space of the housing assembly 1 into a first muffling chamber 13 and a first muffling chamber 13 in the up-down direction, the first muffling chamber 13 being located above the first muffling chamber 13 in this embodiment.

The coil pipe 3 comprises a first pipe section 33, a second pipe section 35 and a connecting pipe section 34, wherein the first pipe section 33 is positioned in the first silencing cavity 13, the second pipe section 35 is positioned in the first silencing cavity 13, one end of the first pipe section 33 is communicated with the air outlet 5, the other end of the first pipe section 33 is communicated with one end of the connecting pipe section 34, the other end of the connecting pipe section 34 penetrates through the partition plate assembly 2 and is communicated with one end of the second pipe section 35, the other end of the second pipe section 35 is communicated with the air suction port 4, a first through hole 331 communicated with the first silencing cavity 13 is formed in the first pipe section 33, and a second through hole 351 communicated with the first silencing cavity 13 is formed in the second pipe section 35.

Specifically, as shown in fig. 3, in the present embodiment, the coil 3 is disposed in the cavity of the housing assembly 1, the coil 3 includes a first pipe section 33, a connecting pipe section 34 and a second pipe section 35, the connecting pipe section 34 is located between the first pipe section 33 and the second pipe section 35, the connecting pipe section 34 passes through the partition assembly 2, one end of the connecting pipe section 34 extends into the first muffling chamber 13 and is connected to the first pipe section 33, and the other end of the connecting pipe section 34 extends into the first muffling chamber 13 and is connected to the second pipe section 35.

In this embodiment, the first pipe section 33 is located in the first muffling chamber 13, one end of the first pipe section 33 is connected to the connecting pipe section 34, and the other end of the first pipe section 33 is connected to the exhaust port 5 of the housing assembly 1. In this embodiment, the second pipe section 35 is located in the first muffling chamber 13, one end of the second pipe section 35 is connected to the connecting pipe section 34, and the other end of the second pipe section 35 is connected to the air suction opening 4 of the housing assembly 1. The coil 3 is arranged such that gas sucked in from the inlet port 4 can flow along the coil 3 to the outlet port 5. In this embodiment, the first pipe section 33 is provided with a first through hole 331, the first through hole 331 communicates the inner cavity of the first pipe section 33 with the first sound-deadening chamber 13, the second pipe section 35 is provided with a second through hole 351, and the second through hole 351 communicates the inner cavity of the second pipe section 35 with the first sound-deadening chamber 13. In the present embodiment, the first through hole 331 and the second through hole 351 both play a role of expanding and silencing.

According to the utility model discloses the muffler, the arrangement of muffler inner part (baffle subassembly 2, coil pipe 3), the distribution form of amortization cavity all can exert an influence to the amortization performance of muffler, muffler in this embodiment is after experimental many times, the arrangement of baffle subassembly 2 in the muffler, the distribution form in amortization chamber has carried out optimal design, baffle subassembly 2 is horizontal arranging roughly promptly, arrange from top to bottom in first amortization chamber 13 and first amortization chamber 13, make the muffler of this embodiment have better noise reduction effect in well low frequency channel (500Hz-1600Hz), the noise of compressor has been reduced. Because the reduction of compressor noise for the compressor operation is more steady, also is favorable to improving the refrigeration performance of compressor, thereby makes the wholeness ability of compressor obtain promoting.

As shown in fig. 6, the graph in fig. 6 is a graph of sound power and frequencies of middle and low frequency bands, wherein the ordinate is sound power, and the abscissa is frequencies of middle and low frequency bands (500Hz-1600Hz), and it can be seen from the graph that the sound power curve of the silencer in the present embodiment is lower than the sound power curve of the silencer in the related art in the middle and low frequency bands as a whole (the smaller the sound power is, the better the silencing effect is).

As shown in fig. 7, the graph in fig. 7 is a graph of the sound power and the frequency of the high frequency band, wherein the ordinate is the sound power, and the abscissa is the frequency of the high frequency band (2500Hz-10000Hz), and it can be seen from the graph that the sound power curve of the silencer in this embodiment is also lower than that of the silencer in the related art as a whole in the high frequency band. It should be noted that the graphs in fig. 6 and 7 in the present embodiment are based on monitoring performed at the inlet port 4 of the muffler, and the graphs are obtained by three-dimensional modeling and simulation.

In some embodiments, as shown in FIG. 3, the direction of extension of first tube segment 33 and the direction of extension of second tube segment 35 are substantially parallel. Specifically, in the present embodiment, the first pipe section 33 and the second pipe section 35 are both arranged to extend substantially along the front-rear direction, and the extending manner of the first pipe section 33 and the second pipe section 35 can be adapted to the vertical arrangement form of the first sound-deadening chamber 13 and the first sound-deadening chamber 13 on the one hand, and on the other hand, the extending manner of the first pipe section 33 and the second pipe section 35 is also an excellent scheme obtained through multiple tests, so that the sound-deadening performance of the muffler can be further improved.

In some embodiments, as shown in fig. 4, the first through hole 331 is provided in the middle of the extending direction of the first pipe section 33. Specifically, in this embodiment, the first through hole 331 is located in the middle of the first pipe section 33, it should be noted that, in this embodiment, the middle of the first pipe section 33 is the middle of the extending direction of the first pipe section 33, because the first through hole 331 is communicated with the first sound-deadening chamber 13, sound entering from the air outlet 5 can reduce a part of sound energy under the expanding and sound-deadening effect of the first through hole 331, so as to achieve the effects of sound deadening and noise reduction, and it is an excellent scheme obtained through multiple tests to locate the first through hole 331 in the middle of the first pipe section 33, so as to further improve the effects of sound deadening and noise reduction.

In some embodiments, as shown in FIG. 4, the second through-hole 351 is provided in the second duct section 35 at a position adjacent to the suction opening 4. Specifically, since the second through hole 351 is communicated with the first sound-deadening chamber 13, the sound entering from the air outlet 5 can absorb a part of sound energy under the expanding and sound-deadening action of the second through hole 351, and the sound-deadening and noise-reducing effects are achieved. In this embodiment, the second through hole 351 is also an excellent solution obtained through a plurality of tests at a position close to the air suction port 4, so that the noise reduction effect can be further improved.

In some embodiments, as shown in fig. 1, the casing assembly 1 includes a first casing 11 and a second casing 12, the first casing 11 has a first cavity, the second casing 12 has a second cavity, the first casing 11 and the second casing 12 are connected such that the first cavity and the second cavity are combined to form the cavity of the casing assembly 1, one of the suction port 4 and the exhaust port 5 is provided on the first casing 11, and the other of the suction port 4 and the exhaust port 5 is provided on the second casing 12.

Specifically, casing assembly 1 components of a whole that can function independently sets up in this embodiment, and casing assembly 1 is formed by first casing 11 and the amalgamation of second casing 12, and such design has made things convenient for casing assembly 1's production on the one hand, pours through the mould and can process out first casing 11 and second casing 12 respectively, and on the other hand has also made things convenient for casing assembly 1's installation and dismantlement, and then has made things convenient for the installation and the maintenance of snake 3 and baffle subassembly 2. In the present embodiment, the air inlet 4 is provided in the first casing 11, and the air outlet 5 is provided in the second casing 12.

In some embodiments, as shown in fig. 1, the coil 3 assembly has an inner lumen, and the coil 3 comprises a first wall 31 and a second wall 32, the first wall 31 having a first lumen and the second wall 32 having a second lumen, and two sidewalls of the first wall 31 and two sidewalls of the second wall 32 being connected to each other such that the first lumen and the second lumen are joined to form the inner lumen of the coil 3. Specifically, 3 subassemblies of coiler have the inner chamber in this embodiment, and 3 components of a whole that can function independently settings of coiler, coiler 3 include first pipe wall 31 and second pipe wall 32, and the cross section of first pipe wall 31 and second pipe wall 32 is the circular arc type, has first chamber in the first pipe wall 31, has the second chamber in the second pipe wall 32, and first chamber and second chamber are the half cylinder type. In this embodiment, the coil 3 is formed by splicing a first tube wall 31 and a second tube wall 32, and when the first tube wall 31 and the second tube wall 32 are spliced, the first cavity and the second cavity are butted to form an inner cavity of the coil 3. The split arrangement of the coil 3 facilitates the processing and production of the coil 3.

In some embodiments, as shown in fig. 1, the partition plate assembly 2 is provided with a through hole for the coil 3 to pass through, the partition plate assembly 2 includes a first partition plate 21 and a second partition plate 22, the first partition plate 21 is provided with a first groove, the second partition plate 22 is provided with a second groove, and the first partition plate 21 and the second partition plate 22 are connected to form the through hole by combining the first groove and the second groove. Specifically, 2 components of a whole that can function independently settings of baffle assembly in this embodiment, baffle assembly 2 includes first baffle 21 and second baffle 22, and baffle assembly 2 is formed by first baffle 21 and the concatenation of second baffle 22, is equipped with first groove on the first baffle 21, is equipped with the second groove on the second baffle 22, and first groove and second groove are the half slot that the cross section is the semicircle type, and after first baffle 21 and the concatenation of second baffle 22, first groove and second groove meeting butt joint and amalgamation become the perforating hole that supplies coiler 3 to pass. Because the coil 3 is irregular, the split arrangement of the baffle plate component 2 facilitates the coil 3 to be assembled in the through hole.

In some embodiments, the ratio of the height of the first sound-deadening chamber 13 to the height of the first sound-deadening chamber 13 is one-third to two-thirds. Specifically, as shown in fig. 1, the height of the first muffling chamber 13 is the height dimension of the first muffling chamber 13 in the vertical direction, and the ratio of the height of the first muffling chamber 13 to the height of the first muffling chamber 13 may be any value between one third and two thirds, such as 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, and the like. The ratio of the height of the first muffling cavity 13 to the height of the first muffling cavity 13 is also an excellent scheme obtained through multiple tests in a reasonable range, and the muffling performance of the muffler can be further improved.

In some embodiments, coil 3 is a round tube, and coil 3 has an inner diameter of 6mm to 8 mm. Specifically, in this embodiment, the inner diameter of the coil 3 may be any value between 6mm and 8mm, for example, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, etc., and setting the inner diameter of the coil 3 within a reasonable range is also an excellent scheme obtained through a plurality of tests, so that the silencing performance of the silencer can be further improved.

In some embodiments, the bottom of the housing assembly 1 is provided with an oil leakage hole, which is communicated with the first silencing chamber 13 and is used for flowing out the lubricating oil flowing into the first silencing chamber 13. Specifically, the oil leakage hole is formed in the bottom of the shell assembly 1, the first silencing cavity 13 is communicated with the outer side of the shell assembly 1 through the oil leakage hole, lubricating oil flows into the first silencing cavity 13 due to the fact that the compressor can move in a reciprocating mode, and the lubricating oil in the first silencing cavity 13 is convenient to discharge due to the arrangement of the oil leakage hole.

In some embodiments, a suction pipe (not shown) is disposed at the suction port 4 of the casing assembly 1, the suction pipe is a circular pipe, the inner diameter of the suction pipe is 4mm-8mm, and the length of the suction pipe is 5mm-10 mm. Specifically, in the present embodiment, the air suction pipe is disposed outside the casing assembly 1, and one end of the air suction pipe is abutted to the air suction port 4. In this embodiment, the air suction pipe is a circular pipe, the inner diameter of the air suction pipe can be any value between 4mm and 8mm, such as 4mm, 5mm, 6mm, 7mm, and 8mm, and the length of the air suction pipe can be any value between 5mm and 10mm, such as 5mm, 6mm, 7mm, 8mm, 9mm, and 10 mm.

A muffler according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, a muffler according to an embodiment of the present invention includes a housing assembly 1, a baffle assembly 2, and a coil 3.

The shell component 1 is provided with an air suction port 4 and an air exhaust port 5, wherein the air suction port 4 is arranged at the bottom of the shell component 1 and is positioned on the front side surface of the shell component 1, and the air exhaust port 5 is arranged at the top of the shell component 1 and is positioned on the top surface of the shell component 1. The casing assembly 1 is internally provided with a cavity, the partition plate assembly 2 is arranged in the cavity of the casing assembly 1 in the embodiment, the partition plate assembly 2 is horizontally arranged, and in the up-down direction, the partition plate assembly 2 divides the space of the casing assembly 1 into a first silencing cavity 13 and a first silencing cavity 13, wherein the first silencing cavity 13 is positioned above the first silencing cavity 13.

As shown in fig. 3, in the present embodiment, the coil 3 is disposed in the cavity of the housing assembly 1, the coil 3 includes a first pipe section 33, a connecting pipe section 34 and a second pipe section 35, the connecting pipe section 34 is located between the first pipe section 33 and the second pipe section 35, the connecting pipe section 34 passes through the partition assembly 2, the top end of the connecting pipe section 34 extends into the first muffling chamber 13 and is connected to the first pipe section 33, and the bottom end of the connecting pipe section 34 extends into the first muffling chamber 13 and is connected to the second pipe section 35.

In this embodiment, the first pipe section 33 is located in the first muffling chamber 13, one end of the first pipe section 33 is connected to the connecting pipe section 34, and the other end of the first pipe section 33 is connected to the exhaust port 5 of the housing assembly 1. In this embodiment, the second pipe section 35 is located in the first muffling chamber 13, one end of the second pipe section 35 is connected to the connecting pipe section 34, and the other end of the second pipe section 35 is connected to the air suction opening 4 of the housing assembly 1. The coil 3 is arranged such that gas sucked in from the inlet port 4 can flow along the coil 3 to the outlet port 5.

In this embodiment, the first pipe section 33 is provided with a first through hole 331, the first through hole 331 communicates the inner cavity of the first pipe section 33 with the first sound-deadening chamber 13, the second pipe section 35 is provided with a second through hole 351, and the second through hole 351 communicates the inner cavity of the second pipe section 35 with the first sound-deadening chamber 13. In the present embodiment, the first through hole 331 and the second through hole 351 both play a role of expanding and silencing. In the present embodiment, two first through holes 331 are provided in the first pipe section 33, and the two first through holes 331 are arranged in mirror symmetry with respect to the axial direction of the first pipe section 33. Similarly, the second pipe section 35 is provided with two second through holes 351, and the two second through holes 351 are arranged in mirror symmetry with respect to the axial direction of the second pipe section 35. As shown in fig. 3 and 4, the first pipe section 33 and the second pipe section 35 are arranged to extend in the front-rear direction in the present embodiment. The first through hole 331 is located at the middle of the first duct section 33 in this embodiment, and the second through hole 351 is provided at the position of the second duct section 35 near the suction port 4 (the second through hole 351 can also be regarded as being provided at the front end of the second duct section 35).

As shown in fig. 1, in the present embodiment, the housing assembly 1 is separately disposed, the housing assembly 1 is formed by splicing a first housing 11 and a second housing 12, and the splicing manner between the first housing 11 and the second housing 12 may be a card insertion assembly, a screw fixation, an adhesive, and the like. In the present embodiment, the air inlet 4 is provided in the first casing 11, and the air outlet 5 is provided in the second casing 12.

As shown in fig. 1, the coil 3 assembly in this embodiment has an inner cavity, the coil 3 is split, the coil 3 includes a first tube wall 31 and a second tube wall 32, the cross sections of the first tube wall 31 and the second tube wall 32 are both arc-shaped, a first cavity is provided in the first tube wall 31, a second cavity is provided in the second tube wall 32, and the first cavity and the second cavity are both semi-cylindrical. In this embodiment, the coil 3 is formed by splicing a first tube wall 31 and a second tube wall 32, and when the first tube wall 31 and the second tube wall 32 are spliced, the first cavity and the second cavity are butted to form an inner cavity of the coil 3.

2 components of a whole that can function independently settings of partition plate subassembly in this embodiment, partition plate subassembly 2 includes first baffle 21 and second baffle 22, partition plate subassembly 2 is formed by first baffle 21 and the concatenation of second baffle 22, be equipped with first groove on the first baffle 21, be equipped with the second groove on the second baffle 22, first groove and second groove are the half slot that the cross section is the semicircle type, after first baffle 21 and the concatenation of second baffle 22, first groove and second groove can dock and the amalgamation becomes the perforating hole that supplies coiler 3 to pass. In the present embodiment, the first shell 11, the second shell 12, the first partition 21, the second partition 22, the first pipe wall 31, and the second pipe wall 32 are all formed by die casting.

The ratio of the height of the first muffling chamber 13 to the height of the first muffling chamber 13 is one third in this embodiment. The coil 3 is a round pipe, and the inner diameter of the coil 3 is 6 mm.

In order to facilitate the discharge of the lubricating oil in the first muffling chamber 13, in the present embodiment, an oil leakage hole is formed in the bottom of the housing assembly 1, the oil leakage hole communicates the first muffling chamber 13 with the outside of the bottom of the housing assembly 1, and the lubricating oil flowing into the first muffling chamber 13 can be discharged through the oil leakage hole.

As shown in fig. 1 and 2, in the present embodiment, an air intake pipe is further provided outside the casing assembly 1, one end of the air intake pipe is in contact with the air intake port 4, and the air flowing from the air intake pipe can directly flow into the coil pipe 3. In this embodiment, the air suction pipe is a circular pipe, the inner diameter of the air suction pipe is 4mm, and the length of the air suction pipe is 5 mm.

A muffler according to another embodiment of the present invention will be described with reference to the accompanying drawings.

According to the utility model discloses muffler includes casing subassembly 1, baffle subassembly 2, breathing pipe and coiler 3. The housing assembly 1, the partition plate assembly 2, the air suction pipe and the coil pipe 3 may be the same as those in the above embodiment, and are not described again, except that the ratio of the height of the first muffling chamber 13 to the height of the first muffling chamber 13 is 0.6 in this embodiment. The coil 3 is a round pipe, and the inner diameter of the coil 3 is 8 mm. The breathing pipe is a circular pipe, the inner diameter of the breathing pipe is 8mm, and the length of the breathing pipe is 10 mm.

A muffler according to still another embodiment of the present invention will be described with reference to the accompanying drawings.

According to the utility model discloses muffler includes casing subassembly 1, baffle subassembly 2, breathing pipe and coiler 3. The housing assembly 1, the partition assembly 2, the air intake pipe and the coil pipe 3 may be the same as those in the above embodiments, and are not described again, except that the ratio of the height of the first muffling chamber 13 to the height of the first muffling chamber 13 is two thirds. The coil 3 is a round pipe, and the inner diameter of the coil 3 is 7 mm. The breathing pipe is a circular pipe, the inner diameter of the breathing pipe is 5mm, and the length of the breathing pipe is 9 mm.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless expressly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A muffler, comprising:

the air conditioner comprises a shell assembly, a fan blade, a motor and the like, wherein a cavity is arranged in the shell assembly, an air suction port is arranged at the bottom of the shell assembly, an air exhaust port is arranged at the top of the shell assembly, and an exhaust port is arranged at the top of the shell assembly, and the air inlet and the exhaust port are both communicated with the cavity;

the baffle plate assembly is arranged in the cavity to divide the cavity into a first silencing cavity and a second silencing cavity, and the first silencing cavity is positioned above the second silencing cavity;

the coil pipe comprises a first pipe section, a second pipe section and a connecting pipe section, the first pipe section is located in the first silencing cavity, the second pipe section is located in the second silencing cavity, one end of the first pipe section is communicated with the exhaust port, the other end of the first pipe section is communicated with one end of the connecting pipe section, the other end of the connecting pipe section penetrates through the partition plate assembly and is communicated with one end of the second pipe section, the other end of the second pipe section is communicated with the air suction port, a first through hole communicated with the first silencing cavity is formed in the first pipe section, and a second through hole communicated with the second silencing cavity is formed in the second pipe section.

2. The muffler of claim 1 wherein the direction of extension of the first pipe segment and the direction of extension of the second pipe segment are parallel.

3. The muffler according to claim 2, wherein the first through hole is provided in a middle portion in an extending direction of the first pipe section.

4. The muffler of claim 2, wherein the second through-hole is provided at a position of the second pipe section adjacent to the suction port.

5. The muffler of claim 1, wherein the housing assembly comprises a first housing and a second housing, the first housing having a first cavity and the second housing having a second cavity, the first housing and the second housing being connected such that the first cavity and the second cavity are joined to form the cavity of the housing assembly, one of the suction port and the exhaust port being provided on the first housing and the other of the suction port and the exhaust port being provided on the second housing.

6. The muffler of claim 1, wherein the coil has an inner lumen, the coil including a first wall having a first lumen and a second wall having a second lumen, the first wall having two sidewalls and the second wall being joined to each other such that the first lumen and the second lumen are joined to form the inner lumen of the coil.

7. The muffler of claim 1, wherein the partition assembly has a through hole for the coil to pass through, the partition assembly includes a first partition and a second partition, the first partition has a first groove, the second partition has a second groove, and the first partition and the second partition are connected so that the first groove and the second groove are combined to form the through hole.

8. The muffler according to any one of claims 1 to 7 wherein the ratio of the height of the first chamber to the height of the second chamber is one-third to two-thirds.

9. The muffler of any one of claims 1 to 7, wherein the coil is a round tube and the coil has an inner diameter of 6mm to 8 mm.

10. The muffler according to any one of claims 1 to 7, wherein an oil leak hole is provided in a bottom portion of the housing assembly, the oil leak hole communicating with the second sound-deadening chamber, the oil leak hole being adapted to allow the lubricating oil flowing into the second sound-deadening chamber to flow out.

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