Compressor

Abstract

The utility model provides a compressor which comprises a compressor body, and a first exhaust port and a second exhaust port are formed in the compressor body. The first silencing assembly comprises a third exhaust port, a first silencing cavity and a second silencing cavity, the first exhaust port communicates with the first silencing cavity, and the third exhaust port communicates with the second silencing cavity; the second silencing assembly comprises a third silencing cavity and a fourth silencing cavity, and the second exhaust port communicates with the third silencing cavity; the two ends of the first communicating channel communicate with the first silencing cavity and the fourth silencing cavity correspondingly, and airflow in the first silencing cavity flows into the fourth silencing cavity through the first communicating channel; and the two ends of the second communicating channel communicate with the second silencing cavity and the fourth silencing cavity correspondingly, and airflow in the fourth silencing cavity flows into the first silencing cavity through the second communicating channel and is exhausted through the third exhaust port. The compressor solves the problem that in the prior art, the noise of the compressor is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor sound attenuation technology field, specifically, relate to a kind of compressor. BACKGROUND

[0002] In the compressor field, double-layer type up-down muffler is usually used to reduce the noise generated inside pump body. Double-layer type up-down muffler structure includes: outer layer upper muffler, inner layer upper muffler, outer layer lower muffler and inner layer lower muffler. The inner cavity of outer layer upper muffler, the inner cavity of inner layer upper muffler and the inner cavity of inner layer lower muffler are all non-closed type, and the outer layer lower muffler is closed type design. Outer layer upper muffler generates exhaust noise when compressor is running, and inner layer upper muffler is used to reduce the exhaust noise of outer layer upper muffler. Inner layer lower muffler generates noise when exhaust, and outer layer lower muffler is fully closed, which blocks and reduces the noise generated by inner layer lower muffler.

[0003] However, the existing double-layer muffler technical scheme still has the problem of high noise, and can only increase sound insulation cotton on the air conditioning system to reduce the noise of the compressor, which not only makes the assembly more complex, but also increases the cost of the air conditioning system. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a kind of compressor to solve the problem of high noise in prior art.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, a kind of compressor is provided, comprising: machine body, first exhaust port and second exhaust port are arranged on machine body;First sound attenuation component, which is arranged above machine body, first sound attenuation component includes third exhaust port, first sound attenuation cavity and second sound attenuation cavity, first exhaust port is communicated with first sound attenuation cavity, and third exhaust port is communicated with second sound attenuation cavity;Second sound attenuation component, which is arranged below machine body, second sound attenuation component includes third sound attenuation cavity and fourth sound attenuation cavity, and second exhaust port is communicated with third sound attenuation cavity;First communication channel, which is arranged on machine body, both ends of first communication channel are communicated with first sound attenuation cavity and fourth sound attenuation cavity respectively, and airflow in first sound attenuation cavity flows into fourth sound attenuation cavity through first communication channel;Second communication channel, which is arranged on machine body, both ends of second communication channel are communicated with second sound attenuation cavity and fourth sound attenuation cavity respectively, and airflow in fourth sound attenuation cavity flows into first sound attenuation cavity through second communication channel, and is discharged through third exhaust port.

[0006] Further, the compressor further comprises: a third communication channel arranged on the machine body, both ends of the third communication channel are communicated with the first sound attenuation cavity and the third sound attenuation cavity respectively, and the airflow in the third sound attenuation cavity flows into the first sound attenuation cavity through the second communication channel.

[0007] Further, the first communication passage, the third communication passage and the second communication passage are sequentially and spacedly arranged along the direction of the axis of the machine body to the side end surface of the machine body.

[0008] Further, the first muffling assembly comprises a first casing which is covered on the machine body, a first muffling cavity which is arranged in the first casing, and the first air inlet of the first communication passage, the third air outlet of the third communication passage and the first air outlet are respectively opposite to the first casing.

[0009] Further, the first muffling assembly further comprises a second casing which is arranged on the side of the first casing away from the machine body, a second muffling cavity which is arranged between the first casing and the second casing, and a third air outlet which is arranged on the second casing; the second casing comprises a first connecting plate segment and a first protruding plate segment which are connected to each other, and the first protruding plate segment protrudes in the direction away from the machine body relative to the first connecting plate segment; the first connecting plate segment is connected to the first casing, at least part of the first protruding plate segment is arranged opposite to the second air outlet of the second communication passage, and at least part of the second muffling cavity is arranged between the first protruding plate segment and the machine body.

[0010] Further, the first casing further comprises a second connecting plate segment, at least part of the second connecting plate segment is attached to and connected to the machine body, and the first connecting plate segment is connected to the second connecting plate segment; a first through hole is arranged on the second connecting plate segment, and two ends of the first through hole are respectively communicated with the second communication passage and the second muffling cavity.

[0011] Further, a guide plate segment is arranged on the first casing, the guide plate segment extends from the inner wall surface of the first casing in the direction close to the machine body to enclose a guide space between the guide plate segment and the inner wall surface of the first casing, the first air inlet and the third air outlet are respectively arranged opposite to the guide space, and the airflow flowing out of the third air outlet is guided to the first communication passage through the guide space.

[0012] Further, the second muffling assembly comprises a third casing which is covered on the bottom end of the machine body, a third muffling cavity which is arranged in the third casing, and a third air inlet of the third communication passage and a second air outlet which are respectively arranged opposite to the third casing; a fourth casing which is arranged on the end of the third casing away from the machine body, and a fourth muffling cavity which is arranged between the third casing and the fourth casing.

[0013] Further, the third casing comprises a third connecting plate segment and a second protruding plate segment which are connected to each other, the second protruding plate segment protrudes in the direction away from the machine body relative to the third connecting plate segment, and at least part of the third muffling cavity is arranged between the second protruding plate segment and the machine body; the third connecting plate segment is attached to the machine body, a second through hole is arranged on the third connecting plate segment, and two ends of the second through hole are respectively communicated with the first communication passage and the fourth muffling cavity.

[0014] Furthermore, the third housing also includes: a fourth connecting plate segment connected to the end of the second protruding plate segment away from the third connecting plate segment; the fourth housing also includes: a fifth connecting plate segment and a third protruding plate segment connected to each other, the third protruding plate segment protruding relative to the fifth connecting plate segment in a direction away from the body, the fifth connecting plate segment and the third protruding plate segment being respectively disposed opposite to the fourth connecting plate segment, and at least a portion of the fourth silencing cavity being disposed between the third protruding plate segment and the fourth connecting plate segment; wherein, the fifth connecting plate segment and the fourth connecting plate segment are attached to each other and connected to each other, the fourth connecting plate segment is provided with a third through hole, the two ends of the third through hole being respectively connected to the second communicating channel and the fourth silencing cavity.

[0015] According to the technical solution of this utility model, the compressor includes a body, a first silencing component, a second silencing component, a first connecting channel, and a second connecting channel. The first silencing component is disposed above the body and includes a third exhaust port, a first silencing chamber, and a second silencing chamber. The first exhaust port is connected to the first silencing chamber, and the third exhaust port is connected to the second silencing chamber. The second silencing component is disposed below the body and includes a third silencing chamber and a fourth silencing chamber. The second exhaust port is connected to the third silencing chamber. The first connecting channel is disposed on the body and its two ends are connected to the first silencing chamber and the fourth silencing chamber, respectively. Airflow in the first silencing chamber flows into the fourth silencing chamber through the first connecting channel. The second connecting channel is disposed on the body and its two ends are connected to the second silencing chamber and the fourth silencing chamber, respectively. Airflow in the fourth silencing chamber flows into the first silencing chamber through the second connecting channel and is discharged through the third exhaust port. The design of the first and second connecting channels allows the gas to form a circulation path between the silencing components, increasing the length of the gas flow path. In particular, the airflow in the first silencing chamber, after being discharged from the first exhaust port, needs to flow downward through the first connecting channel into the fourth silencing chamber, further reducing exhaust noise, reducing reliance on external sound insulation materials, and lowering the overall cost. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of an embodiment of the compressor according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 Enlarged view of section A in the middle;

[0019] Figure 3 It shows Figure 1 Enlarged view of section B;

[0020] Figure 4 A top view of the first housing in the compressor according to the present application is shown;

[0021] Figure 5 A sectional view of the first housing in the compressor according to the present application is shown;

[0022] Figure 6 A top view of the second housing in the compressor according to the present application is shown;

[0023] Figure 7 A sectional view of the second housing in the compressor according to the present application is shown; Figure 6 A sectional view of the second housing in the compressor according to the present application is shown;

[0024] Figure 8 A top view of the third housing in the compressor according to the present application is shown;

[0025] Figure 9 A sectional view of the third housing in the compressor according to the present application is shown; Figure 8 A sectional view of the third housing in the compressor according to the present application is shown;

[0026] Figure 10 A top view of the fourth housing in the compressor according to the present application is shown;

[0027] Figure 11 A sectional view of the fourth housing in the compressor according to the present application is shown;

[0028] Figure 12 A structure exploded view of the compressor according to the present application is shown;

[0029] Figure 13 A structure schematic view of the compressor in the prior art is shown;

[0030] Figure 14 A top view of the second housing in the compressor according to the prior art is shown;

[0031] Figure 15 A side view of the second housing in the compressor according to the prior art is shown;

[0032] Figure 16 A top view of the first housing in the compressor according to the prior art is shown;

[0033] Figure 17 A side view of the first housing in the compressor according to the prior art is shown;

[0034] Figure 18 A top view of the fourth housing in the compressor according to the prior art is shown;

[0035] Figure 19 A side view of the fourth housing in the compressor according to the prior art is shown;

[0036] Figure 20 A top view of the third shell in the compressor according to the prior art is shown;

[0037] Figure 21 A side view of the third shell in the compressor according to the prior art is shown;

[0038] Figure 22 A comparison chart of the low-noise compressor of the present application and the noise value of the prior compressor is shown.

[0039] Among them, the above-mentioned drawings include the following reference signs:

[0040] 100, body; 101, first exhaust port; 102, second exhaust port; 110, first cylinder; 120, first flange; 130, partition; 140, second cylinder; 150, second flange; 160, crankshaft;

[0041] 200, first silencing assembly; 201, third exhaust port; 202, first silencing cavity; 203, second silencing cavity; 210, first shell; 211, second connecting plate segment; 212, first through hole; 213, guide plate segment; 214, guide space; 220, second shell; 221, first connecting plate segment; 222, first protruding plate segment;

[0042] 300, second silencing assembly; 301, third silencing cavity; 302, fourth silencing cavity; 310, third shell; 311, third connecting plate segment; 312, second protruding plate segment; 313, second through hole; 314, fourth connecting plate segment; 315, third through hole; 320, fourth shell; 321, fifth connecting plate segment; 322, third protruding plate segment; 400, first communication channel; 410, first air inlet; 420, first air outlet; 500, second communication channel; 510, second air outlet; 520, second air inlet; 600, third communication channel; 610, third air outlet; 620, third air inlet;

[0043] 700, exhaust passage; 701, first exhaust hole; 702, second exhaust hole; 703, through hole. DETAILED DESCRIPTION

[0044] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0045] As mentioned in the background, the existing compressor silencer, although a double-layer silencing structure is provided, the air path is relatively short, such as Figures 13 to 21As shown, two exhaust passages 700 are arranged on the body, the first exhaust hole 701 is arranged on the first shell 210, the second exhaust hole 702 and the through hole 703 are arranged on the third shell 310, the third muffling cavity is communicated with the fourth muffling cavity through the second exhaust hole 702, and the airflow in the third muffling cavity and the fourth muffling cavity below the body flows into the second muffling cavity above the body through the exhaust passage and is discharged, the airflow in the first muffling cavity directly flows into the second muffling cavity through the first exhaust hole 701 and is discharged, the flow path of the airflow in the first muffling cavity is relatively short, the noise of the airflow in the first muffling cavity is still relatively high, and the noise can only be reduced by increasing the sound insulation cotton. Therefore, in the compressor provided in the application, the first communication passage 400 and the second communication passage 500 are arranged on the body 100, the two ends of the first communication passage 400 are respectively communicated with the first muffling cavity 202 and the fourth muffling cavity 302, the two ends of the second communication passage 500 are respectively communicated with the second muffling cavity 203 and the fourth muffling cavity 302, the airflow in the first muffling cavity 202 flows into the fourth muffling cavity 302 through the first communication passage 400, and then flows into the second muffling cavity 203 together with the airflow in the fourth muffling cavity 302 through the second communication passage 500 and is discharged, the flow path of the airflow in the first muffling cavity 202 is prolonged, the noise of the compressor is reduced, the use of the sound insulation cotton is reduced, and the cost is reduced.

[0046] Please refer to Figures 1 to 12 The application provides a compressor, which comprises a body 100, a first exhaust port 101 and a second exhaust port 102 are arranged on the body 100, a first muffling assembly 200 is arranged above the body 100, the first muffling assembly 200 comprises a third exhaust port 201, a first muffling cavity 202 and a second muffling cavity 203, the first exhaust port 101 is communicated with the first muffling cavity 202, and the third exhaust port 201 is communicated with the second muffling cavity 203, a second muffling assembly 300 is arranged below the body 100, the second muffling assembly 300 comprises a third muffling cavity 301 and a fourth muffling cavity 302, the second exhaust port 102 is communicated with the third muffling cavity 301, a first communication passage 400 is arranged on the body 100, the two ends of the first communication passage 400 are respectively communicated with the first muffling cavity 202 and the fourth muffling cavity 302, and the airflow in the first muffling cavity 202 flows into the fourth muffling cavity 302 through the first communication passage 400, a second communication passage 500 is arranged on the body 100, the two ends of the second communication passage 500 are respectively communicated with the second muffling cavity 203 and the fourth muffling cavity 302, the airflow in the fourth muffling cavity 302 flows into the first muffling cavity 202 through the second communication passage 500 and is discharged through the third exhaust port 201.

[0047] According to the compressor provided in the application, the compressor comprises a body 100, a first silencing assembly 200, a second silencing assembly 300, a first communication channel 400 and a second communication channel 500. The first silencing assembly 200 is arranged above the body 100. The first silencing assembly 200 comprises a third exhaust port 201, a first silencing cavity 202 and a second silencing cavity 203. The first exhaust port 101 is in communication with the first silencing cavity 202. The third exhaust port 201 is in communication with the second silencing cavity 203. The second silencing assembly 300 is arranged below the body 100. The second silencing assembly 300 comprises a third silencing cavity 301 and a fourth silencing cavity 302. The second exhaust port 102 is in communication with the third silencing cavity 301. The first communication channel 400 is arranged on the body 100. Two ends of the first communication channel 400 are in communication with the first silencing cavity 202 and the fourth silencing cavity 302 respectively. The airflow in the first silencing cavity 202 flows into the fourth silencing cavity 302 through the first communication channel 400. The second communication channel 500 is arranged on the body 100. Two ends of the second communication channel 500 are in communication with the second silencing cavity 203 and the fourth silencing cavity 302 respectively. The airflow in the fourth silencing cavity 302 flows into the first silencing cavity 202 through the second communication channel 500 and is discharged through the third exhaust port 201. The design of the first communication channel 400 and the second communication channel 500 forms a circulating path between the silencing assemblies, increases the length of the flow path of the gas, especially for the airflow in the first silencing cavity 202, which needs to flow downward into the fourth silencing cavity 302 through the first communication channel 400 after being discharged through the first exhaust port 101, thereby further reducing the exhaust noise, reducing the dependence on external sound insulation materials and reducing the overall cost.

[0048] Further, the compressor further comprises a third communication channel 600 arranged on the body 100. Two ends of the third communication channel 600 are in communication with the first silencing cavity 202 and the third silencing cavity 301 respectively. The airflow in the third silencing cavity 301 flows into the first silencing cavity 202 through the second communication channel 500. The introduction of the third communication channel 600 enables the gas discharged from the upper cylinder to not only reach the fourth silencing cavity 302 through the first communication channel 400 but also flow to the third silencing cavity 301 through the third communication channel 600, thereby increasing the circulating path of the gas between the silencing assemblies and improving the silencing efficiency. Since the gas can circulate through a more complex path and be subjected to multiple silencing in multiple silencing cavities, the overall noise characteristics of the compressor are optimized, which not only reduces the noise in a specific frequency band but also improves the noise in the full frequency band.

[0049] As Figure 1As shown, the first communication passage 400, the third communication passage 600, and the second communication passage 500 are sequentially and spacedly arranged along the axis of the body 100 to the side end surface of the body 100. Through the sequentially and spacedly arranged communication passages, the flow path of the gas is lengthened during its flow from one muffling chamber to another, which helps to further attenuate the sound waves in the gas, thereby enhancing the muffling effect of the entire system. The spacedly arranged communication passages can prevent the direct superposition of gas flow and sound waves between different muffling chambers, avoiding potential resonance and noise enhancement phenomena, ensuring the stability and reliability of the muffling effect. The sequentially and spacedly arranged communication passages help to evenly distribute the gas inside the body, avoiding local overpressure or underpressure, thereby optimizing the gas flow, reducing flow resistance and noise.

[0050] Specifically, as shown in Figure 4 and Figure 5 The first muffling assembly 200 includes a first housing 210, which is covered on the body 100, and the first muffling chamber 202 is arranged in the first housing 210. The first air inlet 410 of the first communication passage 400, the third air outlet 610 of the third communication passage 600, and the first air outlet 101 are respectively opposite to the first housing 210. The first housing 210 as a kind of closed structure can provide a more effective sound wave isolation environment for the first muffling chamber 202. When the airflow enters from the first air outlet 101, the first muffling chamber 202 can reduce noise through multiple reflections and absorption of sound waves, and the closedness of the housing further enhances this effect, avoiding the direct leakage of sound waves. The first air inlet 410 of the first communication passage 400 is opposite to the first housing 210, and the third air outlet 610 of the third communication passage 600 is also opposite to the first housing 210. This design makes the airflow more smoothly enter and exit when passing through the first muffling assembly 200, reducing the turbulence and pressure drop in the process of gas flow, thereby reducing additional noise sources.

[0051] As shown in Figure 6 and Figure 7As shown, the first silencing assembly 200 further comprises: a second housing 220, which is arranged on the side of the first housing 210 away from the machine body 100, a second silencing cavity 203 is arranged between the first housing 210 and the second housing 220, and a third exhaust port 201 is arranged on the second housing 220; the second housing 220 comprises a first connecting plate segment 221 and a first protruding plate segment 222 connected to each other, and the first protruding plate segment 222 protrudes in a direction away from the machine body 100 relative to the first connecting plate segment 221; the first connecting plate segment 221 is connected to the first housing 210, at least part of the first protruding plate segment 222 is arranged opposite to the second air outlet 510 of the second communication channel 500, and at least part of the second silencing cavity 203 is arranged between the first protruding plate segment 222 and the machine body 100. The arrangement of the first protruding plate segment 222 increases the path length of the airflow from the second silencing cavity 203 to the third exhaust port 201, which effectively prolongs the residence time of the airflow in the silencing assembly, thereby increasing the silencing opportunity, especially for the absorption of high-frequency noise. The protruding design of the first protruding plate segment 222 relative to the first connecting plate segment 221 can improve the distribution of the airflow flowing from the second communication channel 500 into the second silencing cavity 203, avoid the airflow directly impacting the third exhaust port 201, and reduce the secondary noise generated by the airflow impact. The second housing 220 is connected to the first housing 210 through the first connecting plate segment 221, which increases the overall structural stability of the first silencing assembly and helps to reduce the noise caused by mechanical vibration.

[0052] Further, the first housing 210 further comprises: a second connecting plate segment 211, at least part of the second connecting plate segment 211 is attached to and connected with the machine body 100, and the first connecting plate segment 221 is connected with the second connecting plate segment 211; and a first through hole 212 arranged on the second connecting plate segment 211, two ends of the first through hole 212 are respectively communicated with the second communication channel 500 and the second silencing cavity 203. The attachment and connection of the second connecting plate segment 211 with the machine body 100 can ensure the close contact between the first housing 210 and the machine body 100, enhance the rigidity and stability of the overall structure, and reduce the vibration and noise during operation. The arrangement of the first through hole 212 enables the second communication channel 500 to be directly communicated with the second silencing cavity 203, so that the airflow can flow more smoothly from the inside of the machine body through the communication channel into the silencing assembly, reducing the turbulence and pressure loss that may be generated during the gas flow, optimizing the gas flow path, and being conducive to improving the silencing effect and compressor efficiency. The attachment and connection of at least part of the second connecting plate segment 211 with the machine body 100, and the connection of the first connecting plate segment 221 with the second connecting plate segment 211, help to improve the assembly precision, ensure the sealing between the communication channel and the silencing chamber, prevent gas leakage, and further improve the overall silencing performance.

[0053] In the process of implementation, the first shell 210 is provided with a guide plate segment 213, which is extended from the inner wall surface of the first shell 210 towards the direction close to the machine body 100, so as to form a guide space 214 between the guide plate segment 213 and the inner wall surface of the first shell 210. The first air inlet 410 and the third air outlet 610 are respectively arranged opposite to the guide space 214, and the airflow flowing out of the third air outlet 610 is guided to the first communication channel 400 through the guide space 214. The design of the guide plate segment 213 and the guide space 214 enables the gas discharged from the third air outlet 610 to be effectively guided, avoiding the disorder of gas flow and reducing the noise generated by turbulent flow of gas. The guide space 214 provides a clear guide path for the gas, which helps to reduce the flow resistance of the gas from the third air outlet 610 to the first communication channel 400, making the gas flow more smooth, reducing energy loss and improving the operating efficiency of the compressor. By fine-tuning the gas flow path through the guide plate segment 213, the direction and speed of gas flow can be more effectively controlled, which helps to better reduce sound waves when the gas passes through the first sound attenuation cavity 202, and overall improves the sound attenuation performance. The arrangement of the guide plate segment 213 avoids irregular backflow of gas inside the first shell 210, reduces the vortex phenomenon that may occur in the gas flow, and helps to maintain the stability of the internal pressure of the compressor.

[0054] As Figures 8 to 11As shown, the second silencing assembly 300 comprises: a third housing 310, which is arranged at the bottom end of the body 100, a third silencing cavity 301 is arranged in the third housing 310, and the third intake port 620 and the second exhaust port 102 of the third communication channel 600 are arranged opposite to the third housing 310, respectively; a fourth housing 320, which is arranged at the end of the third housing 310 away from the body 100, and a fourth silencing cavity 302 is arranged between the third housing 310 and the fourth housing 320. The closed space formed by the third housing 310 and the third silencing cavity 301 can serve as a primary silencing area to preliminarily silence the gas discharged from the second exhaust port 102. Subsequently, the gas enters the fourth silencing cavity 302 through the third communication channel 600, and the long and winding gas path in this process helps to further attenuate sound waves, especially in the control of medium and high frequency noise. By arranging the third intake port 620 of the third communication channel 600 opposite to the third housing 310, direct and efficient gas introduction can be achieved, avoiding unnecessary flow resistance and vortex, which not only helps to improve the efficiency of the compressor, but also reduces the additional noise caused by poor gas flow. The arrangement of the fourth housing 320 not only helps to form an independent fourth silencing cavity 302, but also increases the structural stability of the entire compressor. At the same time, the combined design of the third housing 310 and the fourth housing 320 makes the volume of the second silencing assembly 300 reasonably controlled, which helps the compactness and installation convenience of the compressor as a whole. Since the gas can be quickly dispersed to the entire third silencing cavity 301 after entering the third housing 310, and then enters the fourth silencing cavity 302 through the third communication channel 600, this design helps to reduce the pressure loss of the gas in the second silencing assembly 300 and improve the energy efficiency of the compressor.

[0055] Specifically, the third shell 310 comprises a third connecting plate segment 311 and a second protruding plate segment 312 connected to each other, the second protruding plate segment 312 protrudes away from the body 100 relative to the third connecting plate segment 311, at least part of the third sound attenuation cavity 301 is arranged between the second protruding plate segment 312 and the body 100; the third connecting plate segment 311 is attached to the body 100, the third connecting plate segment 311 is provided with a second through hole 313, two ends of the second through hole 313 are respectively communicated with the first communication channel 400 and the fourth sound attenuation cavity 302. The protruding design of the second protruding plate segment 312 increases the volume of the third sound attenuation cavity 301, thereby providing more sound attenuation space for the gas, which helps to absorb more sound waves, especially in the low frequency band, effectively reducing the noise level of the compressor. Since the second protruding plate segment 312 protrudes away from the body 100 relative to the third connecting plate segment 311, it can effectively guide the gas discharged from the second exhaust port 102 to be evenly distributed in the third sound attenuation cavity 301, avoiding local concentration of airflow, thereby reducing airflow impact sound and improving sound attenuation effect. The third connecting plate segment 311 is attached to the body 100 and communicated with the first communication channel 400 and the fourth sound attenuation cavity 302 through the second through hole 313, this design increases the contact area between the third shell 310 and the body 100, improves the stability of the connection, helps to reduce the vibration of the compressor during operation, and further reduces the noise. The arrangement of the second through hole 313 allows the gas from the first sound attenuation cavity 202 to flow into the third sound attenuation cavity 301 through the first communication channel 400, mix with the gas directly entering from the second exhaust port 102, increase the circulation path of the gas between the sound attenuation cavities, thereby improving the sound attenuation efficiency. The geometric shape of the second protruding plate segment 312 helps to improve the flow dynamics characteristics of the gas, reduce the turbulence of the gas flow inside the sound attenuation assembly, thereby reducing the noise caused by turbulence.

[0056] In the embodiments provided in the application, the third shell 310 further comprises a fourth connecting plate segment 314 connected at one end of the second protruding plate segment 312 away from the third connecting plate segment 311; the fourth shell 320 further comprises a fifth connecting plate segment 321 and a third protruding plate segment 322 connected with each other, the third protruding plate segment 322 protrudes away from the fifth connecting plate segment 321 towards the direction away from the machine body 100, the fifth connecting plate segment 321 and the third protruding plate segment 322 are respectively arranged opposite to the fourth connecting plate segment 314, at least part of the fourth sound attenuation cavity 302 is arranged between the third protruding plate segment 322 and the fourth connecting plate segment 314; wherein the fifth connecting plate segment 321 and the fourth connecting plate segment 314 are mutually attached and connected with each other, the fourth connecting plate segment 314 is provided with a third through hole 315, two ends of the third through hole 315 are respectively communicated with the second communication channel 500 and the fourth sound attenuation cavity 302. The space between the third protruding plate segment 322 and the fourth connecting plate segment 314 forms an additional sound attenuation chamber, i.e. the fourth sound attenuation cavity 302. This not only increases the length of the gas flow path, but also provides additional sound attenuation space for the gas, which helps to further absorb and weaken the medium-high frequency noise. The third through hole 315 on the fourth connecting plate segment 314 serves as a channel for gas flow, which can more finely control the distribution of gas flow between different sound attenuation chambers, optimize the gas flow path, the design of the third protruding plate segment 322 and the fifth connecting plate segment 321 can improve the distribution of gas flow from the second communication channel 500 into the fourth sound attenuation cavity 302, avoid direct impact, reduce turbulence and pressure fluctuations in the gas flow, the fifth connecting plate segment 321 and the fourth connecting plate segment 314 are mutually attached and connected, which enhances the structural stability between the third shell 310 and the fourth shell 320, reduces vibration and noise generation.

[0057] In the application, the first gas inlet 410 of the first communication channel 400 and the third gas outlet 610 of the third communication channel 600 are both communicated with the first sound attenuation cavity 202, the first gas outlet 420 of the first communication channel 400 is communicated with the fourth sound attenuation cavity 302, the third gas inlet 620 of the third communication channel 600 is communicated with the third sound attenuation cavity 301, the second gas inlet 520 of the second communication channel 500 is communicated with the fourth sound attenuation cavity 302, and the second gas outlet 510 of the second communication channel 500 is communicated with the second sound attenuation cavity 203.

[0058] The application designs a low-noise compressor, the compressor pump body is a double-layer upper sound attenuator and a double-layer lower sound attenuator structure, the upper sound attenuator and the lower sound attenuator are both two, including an inner layer upper sound attenuator (the first sound attenuation cavity 202), an outer layer upper sound attenuator (the second sound attenuation cavity 203), an inner layer lower sound attenuator (the third sound attenuation cavity 301), and an outer layer lower sound attenuator (the fourth sound attenuation cavity 302), the sound attenuator is like Figures 4 to 11As shown, only the outer layer upper silencer cavity is not closed, the rest of the silencer cavities are closed silencers, the outer layer upper silencer has an exhaust port, the inner layer upper silencer cavity is closed, without an exhaust hole, and is provided with a vent hole, the outer layer lower silencer cavity is closed, without an exhaust hole, and also without a vent hole, the inner layer lower silencer cavity is closed, without an exhaust hole, and is provided with a vent hole, the upper and lower flanges (the first flange 120 and the second flange 150), the upper and lower cylinders (the first cylinder 110 and the second cylinder 140), and the partition plate 130 are provided with a longitudinal exhaust passage in communication, which is in communication with the exhaust holes of the inner layer upper silencer and the inner layer lower silencer to form a plurality of exhaust passages, and the upper and lower flanges and the upper and lower cylinders are all sleeved on the crankshaft 160, and the embodiment is an exhaust passage one (the first communication passage 400), an exhaust passage two (the second communication passage 500), and an exhaust passage three (the third communication passage 600). The number of exhaust passages is not limited, and there are three or more exhaust passages.

[0059] The gas discharged from the first cylinder 110 enters the inner layer upper silencer through the first flange 120 exhaust port, then enters the outer layer lower silencer through the exhaust passage one, then enters the outer layer upper silencer through the exhaust passage two, and finally is discharged through the exhaust port of the outer layer upper silencer, and the gas discharged from the second cylinder 140 enters the inner layer lower silencer through the second flange 150 exhaust port, then enters the inner layer upper silencer through the exhaust passage three, and then enters the outer layer lower silencer through the exhaust passage one together with the gas discharged from the first cylinder 110, then enters the outer layer upper silencer through the exhaust passage two, and finally is discharged through the exhaust port of the outer layer upper silencer. The gases discharged from the first cylinder 110 and the second cylinder 140 are not directly discharged from the outer layer silencer, the gas flow path is increased through each exhaust passage, and the closed inner layer upper silencer and the inner layer lower silencer are matched, so as to reduce the noise of the compressor, and the noise of the compressor is reduced, and the use of the system sound insulation cotton can be reduced, so as to reduce the cost of the air conditioning system.

[0060] The flow area of the first flange 120 exhaust port is A, the flow area of the second flange 150 exhaust port is B, and the minimum flow cross-sectional areas of the exhaust passage one, the exhaust passage two, and the exhaust passage three are S1, S2, and S3 respectively. 0.7(A+B)≤S1≤S3≤1.2(A+B); 0.7B≤S2≤1.2B, so that the compressor can ensure the noise reduction effect, the performance of the compressor will not decrease too much, and the compressor can simultaneously consider low noise and high efficiency. For example Figure 22 As shown, the noise value of the low-noise compressor of the application is obviously superior to that of the existing compressor in the full frequency band, and the high-frequency advantage is larger.

[0061] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0062] According to the compressor provided in the application, the compressor comprises a body 100, a first silencing assembly 200, a second silencing assembly 300, a first communication channel 400 and a second communication channel 500, the first silencing assembly 200 is arranged above the body 100, the first silencing assembly 200 comprises a third exhaust port 201, a first silencing cavity 202 and a second silencing cavity 203, the first exhaust port 101 is communicated with the first silencing cavity 202, and the third exhaust port 201 is communicated with the second silencing cavity 203; the second silencing assembly 300 is arranged below the body 100, the second silencing assembly 300 comprises a third silencing cavity 301 and a fourth silencing cavity 302, the second exhaust port 102 is communicated with the third silencing cavity 301; the first communication channel 400 is arranged on the body 100, two ends of the first communication channel 400 are communicated with the first silencing cavity 202 and the fourth silencing cavity 302 respectively, and the airflow in the first silencing cavity 202 flows into the fourth silencing cavity 302 through the first communication channel 400; the second communication channel 500 is arranged on the body 100, two ends of the second communication channel 500 are communicated with the second silencing cavity 203 and the fourth silencing cavity 302 respectively, the airflow in the fourth silencing cavity 302 flows into the first silencing cavity 202 through the second communication channel 500 and is discharged through the third exhaust port 201. The design of the first communication channel 400 and the second communication channel 500 forms a circulating path between the silencing assemblies, increases the length of the flow path of the gas, especially for the airflow in the first silencing cavity 202, after being discharged through the first exhaust port 101, the airflow needs to flow downward into the fourth silencing cavity 302 through the first communication channel 400, thereby further reducing the exhaust noise, reducing the dependence on external sound insulation materials and reducing the overall cost.

[0063] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A compressor characterized by, The compressor comprises: a machine body (100) provided with a first exhaust port (101) and a second exhaust port (102); a first silencing assembly (200) arranged above the machine body (100), the first silencing assembly (200) comprising a third exhaust port (201), a first silencing cavity (202) and a second silencing cavity (203), the first exhaust port (101) being in communication with the first silencing cavity (202), and the third exhaust port (201) being in communication with the second silencing cavity (203); a second silencing assembly (300) arranged below the machine body (100), the second silencing assembly (300) comprising a third silencing cavity (301) and a fourth silencing cavity (302), the second exhaust port (102) being in communication with the third silencing cavity (301); a first communication channel (400) arranged on the machine body (100), two ends of the first communication channel (400) being in communication with the first silencing cavity (202) and the fourth silencing cavity (302) respectively, and the airflow in the first silencing cavity (202) flowing into the fourth silencing cavity (302) through the first communication channel (400); a second communication channel (500) arranged on the machine body (100), two ends of the second communication channel (500) being in communication with the second silencing cavity (203) and the fourth silencing cavity (302) respectively, the airflow in the fourth silencing cavity (302) flowing into the first silencing cavity (202) through the second communication channel (500) and being discharged through the third exhaust port (201).

2. The compressor of claim 1, wherein, The compressor further comprises: a third communication channel (600) arranged on the machine body (100), two ends of the third communication channel (600) being in communication with the first silencing cavity (202) and the third silencing cavity (301) respectively, and the airflow in the third silencing cavity (301) flowing into the first silencing cavity (202) through the second communication channel (500).

3. The compressor of claim 2, wherein, The first communication channel (400), the third communication channel (600) and the second communication channel (500) are sequentially and spacedly arranged along the direction from the axis of the machine body (100) to the side end surface of the machine body (100).

4. The compressor of claim 2, wherein, The first silencing assembly (200) comprises: a first shell (210) covering the machine body (100), the first silencing cavity (202) being arranged in the first shell (210), and the first intake port (410) of the first communication channel (400), the third exhaust port (610) of the third communication channel (600) and the first exhaust port (101) being opposite to the first shell (210) respectively.

5. The compressor of claim 4, wherein, The first muffling assembly (200) further comprises a second shell (220) arranged on a side of the first shell (210) away from the machine body (100), the second muffling cavity (203) is arranged between the first shell (210) and the second shell (220), and the third exhaust port (201) is arranged on the second shell (220); The second shell (220) comprises: A first connecting plate segment (221) and a first protruding plate segment (222) connected to each other, the first protruding plate segment (222) protrudes towards a direction away from the machine body (100) relative to the first connecting plate segment (221); The first connecting plate segment (221) is connected to the first shell (210), at least part of the first protruding plate segment (222) is arranged opposite to a second air outlet (510) of the second communication channel (500), and at least part of the second muffling cavity (203) is arranged between the first protruding plate segment (222) and the machine body (100).

6. The compressor of claim 5, wherein, The first shell (210) further comprises: A second connecting plate segment (211), at least part of the second connecting plate segment (211) is attached to and connected to the machine body (100), and the first connecting plate segment (221) is connected to the second connecting plate segment (211); A first through hole (212) arranged on the second connecting plate segment (211), two ends of the first through hole (212) are respectively in communication with the second communication channel (500) and the second muffling cavity (203).

7. The compressor of claim 4, wherein A guide plate segment (213) is arranged on the first shell (210), the guide plate segment (213) extends towards a direction close to the machine body (100) on an inner wall surface of the first shell (210) to enclose a guide space (214) between the guide plate segment (213) and the inner wall surface of the first shell (210), the first air inlet (410) and the third air outlet (610) are arranged opposite to the guide space (214) respectively, and airflow flowing out of the third air outlet (610) is guided to the first communication channel (400) through the guide space (214).

8. The compressor of claim 2, wherein, The second muffling assembly (300) comprises: A third shell (310) covering a bottom end of the machine body (100), the third muffling cavity (301) is arranged in the third shell (310), a third air inlet (620) of the third communication channel (600) and the second exhaust port (102) are arranged opposite to the third shell (310) respectively; A fourth shell (320) arranged on an end of the third shell (310) away from the machine body (100), the fourth muffling cavity (302) is arranged between the third shell (310) and the fourth shell (320).

9. The compressor of claim 8, wherein, The third shell (310) comprises: The third connecting plate segment (311) and the second protruding plate segment (312) are connected to each other, the second protruding plate segment (312) protrudes in a direction away from the machine body (100) relative to the third connecting plate segment (311), and at least part of the third sound attenuation cavity (301) is arranged between the second protruding plate segment (312) and the machine body (100); The third connecting plate segment (311) is attached to the machine body (100), and the third connecting plate segment (311) is provided with a second through hole (313), two ends of the second through hole (313) are respectively communicated with the first communication channel (400) and the fourth sound attenuation cavity (302).

10. The compressor of claim 9, wherein, The third shell (310) further comprises: a fourth connecting plate segment (314) connected to one end of the second protruding plate segment (312) away from the third connecting plate segment (311); The fourth shell (320) further comprises: The fifth connecting plate segment (321) and the third protruding plate segment (322) are connected to each other, the third protruding plate segment (322) protrudes in a direction away from the machine body (100) relative to the fifth connecting plate segment (321), the fifth connecting plate segment (321) and the third protruding plate segment (322) are respectively arranged opposite to the fourth connecting plate segment (314), and at least part of the fourth sound attenuation cavity (302) is arranged between the third protruding plate segment (322) and the fourth connecting plate segment (314); The fifth connecting plate segment (321) and the fourth connecting plate segment (314) are attached to and connected to each other, the fourth connecting plate segment (314) is provided with a third through hole (315), and two ends of the third through hole (315) are respectively communicated with the second communication channel (500) and the fourth sound attenuation cavity (302).

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