CN117167240A - Silencer and compressor - Google Patents
Silencer and compressor Download PDFInfo
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- CN117167240A CN117167240A CN202311366198.0A CN202311366198A CN117167240A CN 117167240 A CN117167240 A CN 117167240A CN 202311366198 A CN202311366198 A CN 202311366198A CN 117167240 A CN117167240 A CN 117167240A
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- tapered portion
- straight pipe
- tapered
- inner diameter
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- 230000003584 silencer Effects 0.000 title claims description 10
- 230000030279 gene silencing Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 44
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides a silencing device and a compressor, wherein the silencing device comprises a shell and a second air suction part; the shell is provided with a cavity, and a first air suction part which is communicated with the cavity and provided with a first taper part is arranged on the shell; the second air suction part comprises a second tapered part which is communicated with the first tapered part, wherein the maximum radius of the second tapered part is smaller than that of the first tapered part. The invention can reduce noise and improve air suction efficiency without affecting the performance of the compressor.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a silencing device and a compressor.
Background
Refrigerators have become necessary home appliances, and as the awareness of energy saving in society increases, the refrigerators are also being developed toward high energy efficiency. Energy efficient refrigerators often require higher performance compressors that can cause greater noise. Conventionally, a muffler is provided in a compressor to reduce suction noise and mechanical noise of the compressor, but the conventional muffler generally reduces noise by reducing a flow rate of gas, but the reduction of the flow rate of gas reduces suction efficiency of the compressor at the same time, thereby affecting performance of the compressor.
Disclosure of Invention
The invention provides a silencing device and a compressor, and aims to solve the problem that the air suction efficiency of the compressor is influenced while the noise of the silencing device of the existing compressor is reduced.
In a first aspect, the present invention provides a muffler device including a housing and a second suction portion; the shell is provided with a cavity, and a first air suction part which is communicated with the cavity and provided with a first taper part is arranged on the shell; the second air suction part comprises a second tapered part which is communicated with the first tapered part, wherein the maximum radius of the second tapered part is smaller than that of the first tapered part.
Further, the second air suction part further comprises a straight pipe section; one end of the straight pipe section is communicated with the first taper part, and the other end of the straight pipe section is connected with the second taper part.
Further, the first tapered portion includes a flared section; one end of the flaring section is communicated with the cavity, and the other end of the flaring section is communicated with the straight pipe section.
Further, the second air suction part further comprises at least one first connecting part, and the first connecting part is used for connecting the flaring section and the straight pipe section so that the distance between the straight pipe section and the inlet of the flaring section is a first preset distance.
Further, the first connecting portion comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected with one side of the straight pipe section, one end of the second connecting rod is connected with the other side of the straight pipe section relative to the first connecting rod, and the other end of the first connecting rod and the other end of the second connecting rod are connected with the flaring section.
Further, the inner diameter of the straight tube section is smaller than the minimum inner diameter of the flaring section.
Further, the ratio of the minimum inner diameter of the flared section to the inner diameter of the straight tube section is between 2.8 and 3.2.
Further, the ratio of the maximum inner diameter of the second tapered portion to the inner diameter of the straight tube section is between 2.5 and 3.5.
Further, the second tapered portion includes a first connection section, a second connection section, and a third connection section that are sequentially connected, and the first connection section is further connected with the straight pipe section.
In a second aspect, the present invention provides a compressor comprising a sound attenuating device as defined in any one of the preceding claims.
The invention discloses a silencer and a compressor, wherein a first air suction part communicated with a cavity in the shell is arranged on the shell of the silencer, the first air suction part is provided with a first gradually-reduced part, the first gradually-reduced part is communicated with the cavity, meanwhile, a second air suction part is arranged, the second air suction part is provided with a second gradually-reduced part and is communicated with the first gradually-reduced part, the maximum radius of the second gradually-reduced part is smaller than that of the first gradually-reduced part, when the first air suction part sucks air through the first gradually-reduced part, the flow rate of sucked air is increased, the pressure is reduced, when the sucked air flows through the second gradually-reduced part of the second air suction part, the pressure of the gas positioned at the second gradually-reduced part is lower than the pressure around the second gradually-reduced part, the second gradually-reduced part sucks other surrounding gas at the same time of sucking the gas of the first gradually-reduced part, and the air suction efficiency is improved while the noise is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall block diagram of a muffler device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a muffler device provided in an embodiment of the present invention;
FIG. 3 is an enlarged block diagram of portion A of FIG. 2;
FIG. 4 is a diagram showing the whole structure of a second suction part of the muffler according to the embodiment of the present invention; and
FIG. 5 is a cross-sectional view of a second suction portion of a muffler device according to an embodiment of the present invention;
description of the drawings: 100. a muffler device; 10. a housing; 11. a cavity; 20. a first air suction unit; 21. a first taper; 22. a flaring section; 23. a second connecting portion; 24. a clamping groove; 30. a second air suction unit; 31. a second taper; 311. a first connection section; 312. a second connection section; 313. a third connecting section; 32. a straight pipe section; 33. a first connection portion; 34. a first connecting rod; 35. a second connecting rod; 40. an upper cover; 50. a partition board.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In addition, directional terms such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc. as used herein refer only to the attached drawings and the direction of the product in use. Accordingly, directional terminology is used to describe and understand the invention and is not limiting of the invention. In addition, in the drawings, structures similar or identical to those of the drawings are denoted by the same reference numerals.
Referring to fig. 1 to 5, fig. 1 is an overall structural view of a muffler device 100 according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a silencer 100 according to an embodiment of the present invention; FIG. 3 is an enlarged block diagram of portion A of FIG. 2; fig. 4 is an overall configuration view of a second suction portion 30 of a muffler 100 according to an embodiment of the present invention; fig. 5 is a sectional view of the second suction portion 30 of the muffler 100 according to an embodiment of the present invention. As shown in fig. 1 and 2, the silencer 100 includes a casing 10 and a second suction part 30; the shell 10 is provided with a cavity 11, and a first air suction part 20 which is communicated with the cavity 11 and provided with a first tapering part 21 is arranged on the shell 10; the second air suction portion 30 includes a second tapered portion 31, and the second tapered portion 31 is in communication with the first tapered portion 21, wherein a maximum radius of the second tapered portion 31 is smaller than a maximum radius of the first tapered portion 21.
Specifically, the muffler device 100 includes a housing 10, the housing 10 may be provided with a cavity 11, and the housing 10 may further include an upper cover 40, where the upper cover 40 covers the housing 10 to close the housing 10. A baffle 50 may also be provided within the housing 10 to separate the gases. The housing 10 is provided with a first air intake portion 20, and the first air intake portion 20 may be located on a side surface of the housing 10, and the side surfaces may be a front side surface, a rear side surface, a left side surface, and a right side surface. Preferably, the first suction part 20 may be provided at the front side of the case 10. The first air suction portion 20 includes a first tapered portion 21, where the first tapered portion 21 serves as an air suction port of the first air suction portion 20, and the opening size of the air suction port sequentially increases from inside to outside, that is, the radius of the first tapered portion 21 sequentially increases from inside to outside, the radius at the outermost side is the largest, and the radius at the innermost side is the smallest. The end of the first tapered portion 21 having the smallest radius communicates with the cavity 11 of the housing 10 to suck the gas into the cavity 11, and in addition, a communicating portion may be provided between the first tapered portion 21 and the housing 10 for communicating the first tapered portion 21 with the housing 10, and the communicating portion may be a cylindrical communicating portion or a square communicating portion, preferably, the communicating portion is a cylindrical communicating portion having the same radius as the smallest radius of the first tapered portion 21.
The second suction portion 30 may include a second tapered portion 31, the second tapered portion 31 serves as a suction port of the second suction portion 30, an opening thereof increases sequentially from inside to outside, and the second tapered portion 31 communicates with the first tapered portion 21. The second tapered portion 31 is in communication with the first tapered portion 21, which means that the gas inhaled by the second tapered portion 31 can enter the second tapered portion 31 through the first tapered portion 21 and enter the cavity 11 through the second tapered portion 31, that is, the second tapered portion 31 and the first tapered portion 21 may or may not be directly connected, preferably, the second tapered portion 31 and the first tapered portion 21 are connected by a connecting piece. The maximum radius of the second tapered portion 31 is smaller than the maximum radius of the first tapered portion 21, and then the minimum radius of the second tapered portion 31 is also smaller than the maximum radius of the first tapered portion 21, and a certain space is left between the second tapered portion 31 and the opening of the first tapered portion 21 when the assembly is performed. When the first tapering portion 21 starts to suck the gas, the flow rate of the gas increases so that the pressure decreases, and when the gas reaches the inlet of the second tapering portion 31 through the first tapering portion 21, the pressure of the gas at the inlet of the second tapering portion 31 decreases and is lower than the pressure around the inlet, so that the second tapering portion 31 sucks other gas under the pressure while sucking the gas of the first tapering portion 21, thereby increasing the suction amount of the gas, for example, the sucked gas may be a refrigerant, thereby increasing the suction efficiency.
Referring to fig. 3 to 5, as a further embodiment, the second suction portion 30 further includes a straight tube section 32; one end of the straight pipe section 32 is communicated with the first tapered portion 21, and the other end of the straight pipe section 32 is connected with the second tapered portion 31.
The straight pipe section 32 may be cylindrical, and has one end communicating with the first tapered portion 21 and the other end connected with the second tapered portion 31. The straight pipe section 32 may be integrally formed with the second tapered portion 31, or may be connected by a connection structure. Preferably, the straight tube section 32 is integrally formed with the second tapered portion 31. The radius of the straight tube section 32 is the same as the minimum radius of the second tapered portion 31, and the radius of the straight tube section 32 is also smaller than the maximum radius of the first tapered portion 21. As shown in fig. 2, the straight pipe section 32 is communicated with the first tapering portion 21, that means, the opening of the straight pipe section 32 faces the inlet of the first tapering portion 21, and the straight pipe section 32 and the first tapering portion 21 can be fixedly connected through a connecting piece, so as to improve stability. As can be seen from fig. 2, the gas enters the first tapered portion 21 through the second tapered portion 31 and the straight pipe section 32, and meanwhile, the first tapered portion 21 can also suck other surrounding gas, the smaller the radius of the straight pipe section 32 is, the more the first tapered portion 21 can suck other surrounding gas, and the second tapered portion 31 needs to suck the gas to reduce noise, when the radius of the straight pipe section 32 is smaller, the amount of the gas sucked by the second tapered portion 31 is also reduced, and thus the noise reduction effect is also reduced, therefore, the maximum radius and the minimum radius of the second tapered portion 31 need to be in a moderate size, and the noise reduction can be achieved, and meanwhile, the gas suction efficiency is improved.
Referring to fig. 3, as a further embodiment, the first tapered portion 21 includes a flared section 22; one end of the flaring section 22 is communicated with the cavity 11, and the other end of the flaring section 22 is communicated with the straight pipe section 32.
The first tapering portion 21 includes a flared section 22 and a second connecting portion 23, one end of the flared section 22 is connected with the second connecting portion 23, the other end of the flared section 22 is communicated with the straight tube section 32, the second connecting portion 23 serves as a connecting piece between the first tapering portion 21 and the housing 10, and the second connecting portion 23 is communicated with the cavity 11. The second connection portion 23 may have a cylindrical shape, and then the minimum radius of the flared section 22 is the same as the radius of the second connection portion 23, and the maximum radius of the flared section 22 is greater than the maximum and minimum radii of the second tapered portion 31. When gas enters the inlet of the flared section 22 from the straight section 32, the gas pressure at the inlet of the flared section 22 is less than the ambient pressure, and ambient gas is also drawn in by the flared section 22.
Referring to fig. 4, as a further embodiment, the second suction portion 30 further includes at least one first connection portion 33, where the first connection portion 33 is configured to connect the flared section 22 and the straight section 32 such that a space between the straight section 32 and an inlet of the flared section 22 is a first preset space.
Wherein the first connection portion 33 is used for connecting the second tapered portion 31 and the flared section 22 such that the second tapered portion 31 is fixedly connected with the flared section 22. The first connection portion 33 may include a plurality of connection rods each for connecting the second tapered portion 31 and the flared section 22, and the connection rods may not affect the flared section 22 to suck other gas while being connected. The number of the first connection portions 33 may be set by actual circumstances, and preferably, two first connection portions 33 may be provided. In addition, in addition to the connection of the second tapered portion 31 with the flared section 22 by the first connection portion 33, the second tapered portion 31 may be connected or fixed with other structures in the compressor by other connection members or fixing members, and when the connection and the fixation are required, the straight pipe section 32 of the second tapered portion 31 is placed in front of the flared section 22 and kept at a certain distance from the flared section 22, as shown in fig. 3, D in fig. 3 represents a space between the flared section 22 and the straight pipe section 32, and the space may be between 0 and 3 mm.
As a further embodiment, the first connecting portion 33 includes a first connecting rod 34 and a second connecting rod 35, one end of the first connecting rod 34 is connected to one side of the straight pipe section 32, one end of the second connecting rod 35 is connected to the other side of the straight pipe section 32 opposite to the first connecting rod 34, and the other end of the first connecting rod 34 and the other end of the second connecting rod 35 are both connected to the flared section 22.
The first connecting portion 33 may include a first connecting rod 34 and a second connecting rod 35, the flared section 22 may be provided with a first clamping groove 24, one end of the first connecting rod 34 and one end of the second connecting rod 35 are fixedly connected with the first clamping groove 24, and the other end of the first connecting rod 34 and the other end of the second connecting rod 35 are connected with the straight pipe section 32.
As a further example, the inner diameter of the straight tube section 32 is smaller than the smallest inner diameter of the flared section 22.
The inner diameter of the straight tube section 32 is the same as the minimum inner diameter of the second tapered section 31, and if the inner diameter of the straight tube section 32 is smaller than the minimum inner diameter of the flared section 22, the minimum inner diameter of the second tapered section 31 is also smaller than the minimum inner diameter of the flared section 22, and meanwhile, the maximum inner diameter of the second tapered section 31 is larger than the inner diameter of the straight tube section 32. As shown in fig. 3, the maximum inner diameter of the second tapered portion 31 is R2, the minimum inner diameter of the second tapered portion 31 is R3, and R2 is greater than R3, and in the above arrangement, the velocity of the gas entering the second tapered portion 31 is smaller than the velocity of the gas exiting the straight pipe section 32, so that the pressure P2 at the inlet of the second tapered portion 31 is smaller than the pressure P3 at the outlet of the straight pipe section 32, and the pressure P3 at the outlet of the straight pipe section 32 is the same as the pressure at the inlet of the first tapered portion 21. As shown in fig. 3, the pressure P2 at the inlet of the second tapering portion 31 is greater than the pressure P3 at the outlet of the straight pipe section 32, and at the same time, the pressure P1 around the first tapering portion 21 is greater than the pressure P3, and the gas under high pressure flows to the low pressure, so that the gas intake of the first tapering portion 21 can be increased.
As a further example, the ratio of the minimum inner diameter of the flared section 22 to the inner diameter of the straight tube section 32 is between 2.8-3.2.
Wherein the ratio of the minimum inner diameter of the flared section 22 to the inner diameter of the straight tube section 32 is between 2.8 and 3.2, as shown in fig. 3 and 5, the ratio of R1 to R3 is between 2.8 and 3.2, for example, if R1 is 3.2, the value of R3 is between 1 and 1.14.
As a further example, the ratio of the maximum inner diameter of the second tapered portion 31 to the inner diameter of the straight tube section 32 is between 2.5-3.5.
Wherein the ratio of the maximum inner diameter of the second tapered portion 31 to the inner wall of the straight tube section 32 is between 2.5 and 3.5, i.e. the ratio of the maximum inner diameter of the second tapered portion 31 to the minimum inner diameter thereof is between 2.5 and 3.5. As shown in FIG. 5, the ratio between R2 and R3 is 2.5-3.5, for example, if R2 is 3.5, the value of R3 is 1-1.4.
Referring to fig. 5, as a further embodiment, the second tapered portion 31 includes a first connection section 311, a second connection section 312, and a third connection section 313 connected in sequence, and the first connection section 311 is also connected with the straight pipe section 32.
The first connection section 311, the second connection section 312, and the third connection section 313 are sequentially connected, and the edge section of the first connection section 311, the edge section of the second connection section 312, and the edge section of the third connection section 313 have a certain angle. As shown in fig. 3, the edge section of the first connecting section 311 is a1, the edge section of the second connecting section 312 is a2, the edge section of the third connecting section 313 is a3, and a1 ranges from 140 ° to 160 °, a2 ranges from 120 ° to 140 °, and a3 ranges from 160 ° to 170 °.
The present invention also provides a compressor including the silencer 100 of any one of the above embodiments, the silencer 100 including a casing 10 and a second suction part 30; the shell 10 is provided with a cavity 11, and a first air suction part 20 which is communicated with the cavity 11 and provided with a first tapering part 21 is arranged on the shell 10; the second air suction portion 30 includes a second tapered portion 31, and the second tapered portion 31 is in communication with the first tapered portion 21, wherein a maximum radius of the second tapered portion 31 is smaller than a maximum radius of the first tapered portion 21.
Specifically, the muffler device 100 includes a housing 10, the housing 10 may be provided with a cavity 11, and the housing 10 may further include an upper cover 40, where the upper cover 40 covers the housing 10 to close the housing 10. A baffle 50 may also be provided within the housing 10 to separate the gases. The housing 10 is provided with a first air intake portion 20, and the first air intake portion 20 may be located on a side surface of the housing 10, and the side surfaces may be a front side surface, a rear side surface, a left side surface, and a right side surface. Preferably, the first suction part 20 may be provided at the front side of the case 10. The first air suction portion 20 includes a first tapered portion 21, where the first tapered portion 21 serves as an air suction port of the first air suction portion 20, and the opening size of the air suction port sequentially increases from inside to outside, that is, the radius of the first tapered portion 21 sequentially increases from inside to outside, the radius at the outermost side is the largest, and the radius at the innermost side is the smallest. The end of the first tapered portion 21 having the smallest radius communicates with the cavity 11 of the housing 10 to suck the gas into the cavity 11, and in addition, a communicating portion may be provided between the first tapered portion 21 and the housing 10 for communicating the first tapered portion 21 with the housing 10, and the communicating portion may be a cylindrical communicating portion or a square communicating portion, preferably, the communicating portion is a cylindrical communicating portion having the same radius as the smallest radius of the first tapered portion 21.
The second suction portion 30 may include a second tapered portion 31, the second tapered portion 31 serves as a suction port of the second suction portion 30, an opening thereof increases sequentially from inside to outside, and the second tapered portion 31 communicates with the first tapered portion 21. The second tapered portion 31 is in communication with the first tapered portion 21, which means that the gas inhaled by the second tapered portion 31 can enter the second tapered portion 31 through the first tapered portion 21 and enter the cavity 11 through the second tapered portion 31, that is, the second tapered portion 31 and the first tapered portion 21 may or may not be directly connected, preferably, the second tapered portion 31 and the first tapered portion 21 are connected by a connecting piece. The maximum radius of the second tapered portion 31 is smaller than the maximum radius of the first tapered portion 21, and then the minimum radius of the second tapered portion 31 is also smaller than the maximum radius of the first tapered portion 21, and a certain space is left between the second tapered portion 31 and the opening of the first tapered portion 21 when the assembly is performed. When the first tapering portion 21 starts to inhale gas, the flow rate of the gas increases, so that the pressure decreases, and when the gas reaches the inlet of the second tapering portion 31 through the first tapering portion 21, the pressure of the gas at the inlet of the second tapering portion 31 decreases and is lower than the pressure around the inlet, so that the second tapering portion 31 can inhale other gas under the pressure while inhaling the gas of the first tapering portion 21, thereby increasing the inhaling amount of the gas, wherein the gas may be a refrigerant, thereby increasing the inhaling efficiency.
According to the silencer and the compressor disclosed by the invention, the first tapered part and the second tapered part are arranged, so that the pressure at the inlet of the first tapered part is reduced when gas enters the first tapered part from the second tapered part, and the first tapered part can also be used for surrounding gas, so that the gas suction amount of the first tapered part is improved, and the suction efficiency is improved.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. A muffler device, characterized by being applied to a compressor, comprising:
the shell is provided with a cavity, and a first air suction part which is communicated with the cavity and provided with a first tapering part is arranged on the shell;
the second air suction part comprises a second tapered part which is communicated with the first tapered part, wherein the maximum radius of the second tapered part is smaller than that of the first tapered part.
2. The muffler device as defined in claim 1, wherein said second suction portion further comprises a straight pipe section;
one end of the straight pipe section is communicated with the first taper part, and the other end of the straight pipe section is connected with the second taper part.
3. The muffler device as defined in claim 2, wherein the first tapered portion includes a flared section; one end of the flaring section is communicated with the cavity, and the other end of the flaring section is communicated with the straight pipe section.
4. The silencer of claim 3, wherein the second suction port further includes at least one first connection for connecting the flared section to the straight section such that a spacing between the straight section and an inlet of the flared section is a first predetermined spacing.
5. The muffler device as defined in claim 4, wherein the first connecting portion includes a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to one side of the straight pipe section, one end of the second connecting rod is connected to the other side of the straight pipe section with respect to the first connecting rod, and the other end of the first connecting rod and the other end of the second connecting rod are connected to the flared section.
6. A muffler device as claimed in claim 3, wherein the straight pipe section has an inner diameter less than the smallest inner diameter of the flared section.
7. The muffler device as defined in claim 6, wherein a ratio of a minimum inner diameter of the flared section to an inner diameter of the straight pipe section is between 2.8 and 3.2.
8. The muffler device as defined in claim 6, wherein a ratio of a maximum inner diameter of the second tapered portion to an inner diameter of the straight pipe segment is between 2.5 and 3.5.
9. The muffler device as defined in claim 2, wherein the second tapered portion includes a first connecting section, a second connecting section, and a third connecting section connected in sequence, and the first connecting section is further connected with the straight pipe section.
10. A compressor comprising a muffler device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311366198.0A CN117167240A (en) | 2023-10-20 | 2023-10-20 | Silencer and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311366198.0A CN117167240A (en) | 2023-10-20 | 2023-10-20 | Silencer and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117167240A true CN117167240A (en) | 2023-12-05 |
Family
ID=88930041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311366198.0A Pending CN117167240A (en) | 2023-10-20 | 2023-10-20 | Silencer and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117167240A (en) |
-
2023
- 2023-10-20 CN CN202311366198.0A patent/CN117167240A/en active Pending
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