Silencing device and compressor

Abstract

The application provides a sound attenuation device and a compressor. The sound attenuation device comprises a shell and a second air inlet. The shell has a cavity, and the shell is provided with a first air inlet which is communicated with the cavity and has a first tapering portion. The second air inlet comprises a second tapering portion which is communicated with the first tapering portion, and the maximum radius of the second tapering portion is smaller than that of the first tapering portion. The application can improve the air intake efficiency while reducing the noise, and does not affect the performance of the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, specifically to a silencer and a compressor. Background Technology

[0002] Refrigerators have become essential household appliances, and with increasing societal awareness of energy conservation, refrigerators are evolving towards higher energy efficiency. High-efficiency refrigerators often require high-performance compressors, which in turn generate more noise. Currently, mufflers are typically installed in the compressor to reduce suction and mechanical noise. However, existing mufflers generally reduce noise by decreasing gas flow rate, which simultaneously reduces the compressor's suction efficiency, thus affecting compressor performance. Summary of the Invention

[0003] This invention provides a silencing device and a compressor, aiming to solve the problem that current compressor silencing devices reduce noise but also affect the compressor's suction efficiency.

[0004] In a first aspect, the present invention provides a noise reduction device, which includes a housing and a second intake portion; the housing has a cavity, and the housing is provided with a first intake portion communicating with the cavity and having a first tapered portion; the second intake portion includes a second tapered portion, and the second tapered portion communicates with the first tapered portion, wherein the maximum radius of the second tapered portion is smaller than the maximum radius of the first tapered portion.

[0005] Furthermore, the second intake section also includes a straight tube segment; one end of the straight tube segment is connected to the first tapering section, and the other end of the straight tube segment is connected to the second tapering section.

[0006] Furthermore, the first tapering portion includes a flared section; one end of the flared section is connected to the cavity, and the other end of the flared section is connected to the straight pipe section.

[0007] Furthermore, the second intake section also includes at least one first connecting section, which is used to connect the flared section and the straight pipe section so that the distance between the inlet of the straight pipe section and the inlet of the flared section is a first preset distance.

[0008] Furthermore, the first connecting part 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, and one end of the second connecting rod is connected to the other side of the straight pipe section relative to the first connecting rod. The other ends of the first connecting rod and the other ends of the second connecting rod are both connected to the flared section.

[0009] Furthermore, the inner diameter of the straight pipe section is smaller than the minimum inner diameter of the flared section.

[0010] Furthermore, the ratio of the minimum inner diameter of the flared section to the inner diameter of the straight section is between 2.8 and 3.2.

[0011] Furthermore, the ratio of the maximum inner diameter of the second tapered section to the inner diameter of the straight pipe section is between 2.5 and 3.5.

[0012] Furthermore, the second tapered section includes a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence, and the first connecting segment is also connected to the straight pipe segment.

[0013] In a second aspect, the present invention provides a compressor, the compressor including the silencing device described in any of the preceding claims.

[0014] The present invention discloses a silencing device and compressor. The silencing device has a first intake section on its housing that communicates with the cavity inside the housing. The first intake section has a first converging section that communicates with the cavity. At the same time, a second intake section is provided. The second intake section has a second converging section that communicates with the first converging section. The maximum radius of the second converging section is smaller than the maximum radius of the first converging section. When the first intake section draws in air through the first converging section, the flow rate of the gas increases and the pressure decreases. When the gas flows through the second converging section of the second intake section, the gas pressure at the second converging section decreases, making the pressure of the second converging section lower than the pressure around it. This allows the second converging section to draw in other surrounding gases while drawing in the gas from the first converging section, thereby improving the intake efficiency while reducing noise. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an overall structural diagram of a silencing device provided in an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of a silencing device provided in an embodiment of the present invention;

[0018] Figure 3 yes Figure 2 Enlarged structural diagram of section A;

[0019] Figure 4 This is an overall structural diagram of the second intake section of a silencer device provided in an embodiment of the present invention; and

[0020] Figure 5This is a cross-sectional view of the second intake section of a silencer device provided in an embodiment of the present invention;

[0021] Figure descriptions: 100, silencer; 10, housing; 11, cavity; 20, first intake section; 21, first tapering section; 22, flared section; 23, second connecting section; 24, slot; 30, second intake section; 31, second tapering section; 311, first connecting section; 312, second connecting section; 313, third connecting section; 32, straight pipe section; 33, first connecting section; 34, first connecting rod; 35, second connecting rod; 40, top cover; 50, partition. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, operations, elements, components and / or collections thereof.

[0024] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit 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 unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0025] Furthermore, the directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings and the product's usage state. Therefore, the directional terms used are for illustrating and understanding this invention, and not for limiting it. Additionally, in the accompanying drawings, structures that are similar or identical are indicated by the same reference numerals.

[0026] See Figures 1 to 5 , Figure 1 This is an overall structural diagram of a silencing device 100 provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of a silencing device 100 provided in an embodiment of the present invention; Figure 3 yes Figure 2 Enlarged structural diagram of section A; Figure 4 This is an overall structural diagram of the second air intake section 30 of the silencer 100 provided in an embodiment of the present invention; Figure 5 This is a cross-sectional view of the second intake section 30 of a silencer 100 provided in an embodiment of the present invention. Figure 1 and Figure 2 As shown, the silencing device 100 includes a housing 10 and a second intake section 30; the housing 10 has a cavity 11, and the housing 10 is provided with a first intake section 20 that communicates with the cavity 11 and has a first tapering section 21; the second intake section 30 includes a second tapering section 31, and the second tapering section 31 communicates with the first tapering section 21, wherein the maximum radius of the second tapering section 31 is smaller than the maximum radius of the first tapering section 21.

[0027] Specifically, the silencing device 100 includes a housing 10, which may have a cavity 11. The housing 10 may also include a top cover 40, which closes to the housing 10 to seal it. A partition 50 may also be provided inside the housing 10 to separate gases. A first air intake 20 is provided on the housing 10, which may be located on a side of the housing 10, such as the front side, rear side, left side, or right side. Preferably, the first air intake 20 is located on the front side of the housing 10. The first air intake 20 includes a first tapering portion 21, which serves as the air intake port. The size of the opening of the first tapering portion 21 increases from the inside to the outside, meaning the radius of the first tapering portion 21 increases from the inside to the outside, with the outermost portion having the largest radius and the innermost portion having the smallest radius. The end of the first tapered section 21 with the smallest radius is connected to the cavity 11 of the housing 10, which can draw gas into the cavity 11. In addition, a connecting section can be provided, which is located between the first tapered section 21 and the housing 10 to connect the first tapered section 21 and the housing 10. The connecting section can be a cylindrical connecting section or a square connecting section. Preferably, the connecting section is a cylindrical connecting section, and its radius is the same as the smallest radius of the first tapered section 21.

[0028] The second intake section 30 may include a second tapered section 31, which serves as the intake port of the second intake section 30. The opening of the tapered section 31 increases in size from the inside out, and the second tapered section 31 communicates with the first tapered section 21. The communication between the second tapered section 31 and the first tapered section 21 means that the gas intake by the second tapered section 31 can enter the second tapered section 31 through the first tapered section 21 and then enter the cavity 11. That is, the second tapered section 31 and the first tapered section 21 can be directly connected or not directly connected. Preferably, the second tapered section 31 and the first tapered section 21 are connected by a connector. The maximum radius of the second tapered section 31 is smaller than the maximum radius of the first tapered section 21, and therefore the minimum radius of the second tapered section 31 is also smaller than the maximum radius of the first tapered section 21. During installation, a certain distance is maintained between the openings of the second tapered section 31 and the first tapered section 21. When the first converging section 21 begins to draw in gas, the gas flow rate increases, causing the pressure to decrease. When the gas reaches the inlet of the second converging section 31 through the first converging section 21, the gas pressure at the inlet of the second converging section 31 decreases and becomes lower than the pressure around the inlet. This allows the second converging section 31 to draw in other gases under pressure while simultaneously drawing in the gas from the first converging section 21, thereby increasing the amount of gas drawn in. For example, the gas drawn in can be a refrigerant, thus improving the gas intake efficiency.

[0029] See Figures 3 to 5 As a further embodiment, the second intake section 30 further includes a straight tube section 32; one end of the straight tube section 32 is connected to the first tapering section 21, and the other end of the straight tube section 32 is connected to the second tapering section 31.

[0030] The straight pipe section 32 can be cylindrical, with one end connected to the first tapered section 21 and the other end connected to the second tapered section 31. The straight pipe section 32 can be integrally formed with the second tapered section 31, or they can be connected by a connecting structure. Preferably, the straight pipe section 32 and the second tapered section 31 are integrally formed. If the radius of the straight pipe section 32 is the same as the minimum radius of the second tapered section 31, then the radius of the straight pipe section 32 is also smaller than the maximum radius of the first tapered section 21. Figure 2 As shown, the connection between the straight pipe section 32 and the first tapering section 21 means that the opening of the straight pipe section 32 faces the inlet of the first tapering section 21. The straight pipe section 32 and the first tapering section 21 can be fixedly connected by a connector, thereby improving stability. Figure 2It is known that the gas enters the first converging section 21 through the second converging section 31 and the straight pipe section 32. At the same time, the first converging section 21 can also draw in other surrounding gases. Therefore, the smaller the radius of the straight pipe section 32, the more other surrounding gases the first converging section 21 can draw in. The second converging section 31 needs to reduce noise by drawing in gas. When the radius of the straight pipe section 32 is smaller, the amount of gas that the second converging section 31 can draw in also decreases, and thus the noise reduction effect also decreases. Therefore, the maximum and minimum radii of the second converging section 31 need to be at a moderate size to improve the gas intake efficiency while reducing noise.

[0031] See Figure 3 As a further embodiment, the first tapered portion 21 includes a flared section 22; one end of the flared section 22 is connected to the cavity 11, and the other end of the flared section 22 is connected to the straight pipe section 32.

[0032] The first tapered section 21 includes a flared section 22 and a second connecting section 23. One end of the flared section 22 is connected to the second connecting section 23, and the other end of the flared section 22 is connected to the straight pipe section 32. The second connecting section 23 serves as a connector between the first tapered section 21 and the housing 10, and is also connected to the cavity 11. The second connecting section 23 can be cylindrical, in which case the minimum radius of the flared section 22 is the same as the radius of the second connecting section 23, and the maximum radius of the flared section 22 is greater than both the maximum and minimum radii of the second tapered section 31. When gas enters the inlet of the flared section 22 from the straight pipe section 32, the gas pressure at the inlet of the flared section 22 is lower than the ambient pressure, so the surrounding gas is also drawn into the flared section 22.

[0033] See Figure 4 As a further embodiment, the second suction section 30 further includes at least one first connecting section 33, which is used to connect the flared section 22 and the straight pipe section 32 so that the distance between the straight pipe section 32 and the inlet of the flared section 22 is a first preset distance.

[0034] The first connecting part 33 is used to connect the second tapered part 31 and the flared section 22, so that the second tapered part 31 and the flared section 22 are fixedly connected. The first connecting part 33 may include multiple connecting rods, each of which is used to connect the second tapered part 31 and the flared section 22, and the connecting rods can connect without affecting the intake of other gases by the flared section 22. The number of first connecting parts 33 can be set according to actual conditions. Preferably, two first connecting parts 33 can be provided. In addition to connecting the second tapered part 31 and the flared section 22 through the first connecting part 33, the second tapered part 31 can also be connected or fixed to other structures in the compressor through other connecting parts or fixing parts. When connecting or fixing, the straight pipe section 32 of the second tapered part 31 needs to be placed in front of the flared section 22 and kept at a certain distance from the flared section 22, such as... Figure 3 As shown, Figure 3 In the middle, D represents the distance between the flared section 22 and the straight pipe section 32, which can be between 0-3mm.

[0035] As a further embodiment, the first connecting part 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, and 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. The other ends of the first connecting rod 34 and the second connecting rod 35 are both connected to the flared section 22.

[0036] The first connecting part 33 may include a first connecting rod 34 and a second connecting rod 35. The flared section 22 may be provided with a first slot 24. One end of the first connecting rod 34 and one end of the second connecting rod 35 are fixedly connected to the first slot 24. The other end of the first connecting rod 34 and the other end of the second connecting rod 35 are connected to the straight pipe section 32.

[0037] As a further embodiment, the inner diameter of the straight pipe section 32 is smaller than the minimum inner diameter of the flared section 22.

[0038] In this design, the inner diameter of the straight pipe section 32 is the same as the minimum inner diameter of the second tapering section 31. Since the inner diameter of the straight pipe section 32 is smaller than the minimum inner diameter of the flared section 22, the minimum inner diameter of the second tapering section 31 is also smaller than the minimum inner diameter of the flared section 22. Simultaneously, the maximum inner diameter of the second tapering section 31 is greater than the inner diameter of the straight pipe section 32. For example... Figure 3 As shown, the maximum inner diameter of the second converging section 31 is R2, and the minimum inner diameter is R3. R2 is greater than R3. Under the above configuration, the velocity of the gas entering the second converging section 31 is less than the velocity of the gas exiting the straight pipe section 32. This results in the pressure P2 at the inlet of the second converging section 31 being less than the pressure P3 at the outlet of the straight pipe section 32, while the pressure P3 at the outlet of the straight pipe section 32 is the same as the pressure at the inlet of the first converging section 21. Figure 3 As shown, the pressure P2 at the inlet of the second converging section 31 is greater than the pressure P3 at the outlet of the straight pipe section 32. At the same time, the pressure P1 around the first converging section 21 is greater than the pressure P3. The gas under high pressure will flow to the low pressure area, thereby increasing the gas intake of the first converging section 21.

[0039] As a further embodiment, the ratio of the minimum inner diameter of the flared section 22 to the inner diameter of the straight pipe section 32 is between 2.8 and 3.2.

[0040] The ratio of the minimum inner diameter of the flared section 22 to the inner diameter of the straight section 32 is between 2.8 and 3.2. Figure 3 and Figure 5 As shown, the ratio of R1 to R3 is between 2.8 and 3.2. For example, if R1 is 3.2, then the value of R3 is between 1 and 1.14.

[0041] As a further embodiment, the ratio of the maximum inner diameter of the second tapered section 31 to the inner diameter of the straight pipe section 32 is between 2.5 and 3.5.

[0042] The ratio of the maximum inner diameter of the second tapered section 31 to the inner wall diameter of the straight pipe section 32 is between 2.5 and 3.5, that is, the ratio of the maximum inner diameter of the second tapered section 31 to its minimum inner diameter is between 2.5 and 3.5. Figure 5 As shown, the ratio between R2 and R3 is between 2.5 and 3.5. For example, if R2 is 3.5, then the value of R3 is between 1 and 1.4.

[0043] See Figure 5 As a further embodiment, the second tapered portion 31 includes a first connecting segment 311, a second connecting segment 312 and a third connecting segment 313 connected in sequence, and the first connecting segment 311 is also connected to the straight pipe segment 32.

[0044] The first connecting segment 311, the second connecting segment 312, and the third connecting segment 313 are connected sequentially, and the edge sections of the first connecting segment 311, the second connecting segment 312, and the third connecting segment 313 all have a certain angle. Figure 3 As shown, the edge cross-section of the first connecting segment 311 is a1, the edge cross-section of the second connecting segment 312 is a2, and the edge cross-section of the third connecting segment 313 is a3. The range of a1 is between 140° and 160°, the range of a2 is between 120° and 140°, and the range of a3 is between 160° and 170°.

[0045] The present invention also provides a compressor, the compressor including the silencing device 100 as described in any of the above embodiments, the silencing device 100 including a housing 10 and a second suction part 30; the housing 10 has a cavity 11, and the housing 10 is provided with a first suction part 20 communicating with the cavity 11 and having a first tapering part 21; the second suction part 30 includes a second tapering part 31, and the second tapering part 31 communicates with the first tapering part 21, wherein the maximum radius of the second tapering part 31 is smaller than the maximum radius of the first tapering part 21.

[0046] Specifically, the silencing device 100 includes a housing 10, which may have a cavity 11. The housing 10 may also include a top cover 40, which closes to the housing 10 to seal it. A partition 50 may also be provided inside the housing 10 to separate gases. A first air intake 20 is provided on the housing 10, which may be located on a side of the housing 10, such as the front side, rear side, left side, or right side. Preferably, the first air intake 20 is located on the front side of the housing 10. The first air intake 20 includes a first tapering portion 21, which serves as the air intake port. The size of the opening of the first tapering portion 21 increases from the inside to the outside, meaning the radius of the first tapering portion 21 increases from the inside to the outside, with the outermost portion having the largest radius and the innermost portion having the smallest radius. The end of the first tapered section 21 with the smallest radius is connected to the cavity 11 of the housing 10, which can draw gas into the cavity 11. In addition, a connecting section can be provided, which is located between the first tapered section 21 and the housing 10 to connect the first tapered section 21 and the housing 10. The connecting section can be a cylindrical connecting section or a square connecting section. Preferably, the connecting section is a cylindrical connecting section, and its radius is the same as the smallest radius of the first tapered section 21.

[0047] The second intake section 30 may include a second tapered section 31, which serves as the intake port of the second intake section 30. The opening of the tapered section 31 increases in size from the inside out, and the second tapered section 31 communicates with the first tapered section 21. The communication between the second tapered section 31 and the first tapered section 21 means that the gas intake by the second tapered section 31 can enter the second tapered section 31 through the first tapered section 21 and then enter the cavity 11. That is, the second tapered section 31 and the first tapered section 21 can be directly connected or not directly connected. Preferably, the second tapered section 31 and the first tapered section 21 are connected by a connector. The maximum radius of the second tapered section 31 is smaller than the maximum radius of the first tapered section 21, and therefore the minimum radius of the second tapered section 31 is also smaller than the maximum radius of the first tapered section 21. During installation, a certain distance is maintained between the openings of the second tapered section 31 and the first tapered section 21. When the first converging section 21 begins to draw in gas, the gas flow rate increases, causing the pressure to decrease. When the gas reaches the inlet of the second converging section 31 through the first converging section 21, the gas pressure at the inlet of the second converging section 31 decreases and becomes lower than the pressure around the inlet. This allows the second converging section 31 to draw in other gases under pressure while simultaneously drawing in the gas from the first converging section 21, thereby increasing the amount of gas drawn in. The gas can be a refrigerant, thus improving the gas intake efficiency.

[0048] The silencing device and compressor disclosed in this invention, by providing a first converging section and a second converging section, reduces the pressure at the inlet of the first converging section when gas enters the first converging section from the second converging section, so that the first converging section can also absorb surrounding gas, thereby increasing the gas intake of the first converging section and improving the intake efficiency.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A noise reduction device, characterized in that, Applied to compressors, including: A housing having a cavity, and the housing having a first air intake portion communicating with the cavity and having a first tapering portion; The second intake section includes a second tapered section, and the second tapered section is connected to the first tapered section, wherein the maximum radius of the second tapered section is smaller than the maximum radius of the first tapered section. The second intake section also includes a straight tube segment; one end of the straight tube segment is connected to the first tapering section, and the other end of the straight tube segment is connected to the second tapering section; The first tapered section includes a flared section; one end of the flared section is connected to the cavity, and the other end of the flared section is connected to the straight pipe section; The second intake section further includes at least one first connecting section, which is used to connect the flared section and the straight pipe section so that the distance between the inlet of the straight pipe section and the inlet of the flared section is a first preset distance.

2. The silencing device as described in claim 1, characterized in that, The first connecting part 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, and one end of the second connecting rod is connected to the other side of the straight pipe section opposite to the first connecting rod. The other ends of the first connecting rod and the other ends of the second connecting rod are both connected to the flared section.

3. The silencing device as described in claim 1, characterized in that, The inner diameter of the straight pipe section is smaller than the minimum inner diameter of the flared section.

4. The silencing device as described in claim 3, characterized in that, The ratio of the minimum inner diameter of the flared section to the inner diameter of the straight section is between 2.8 and 3.

2.

5. The silencing device as described in claim 3, characterized in that, The ratio of the maximum inner diameter of the second tapered section to the inner diameter of the straight pipe section is between 2.5 and 3.

5.

6. The silencing device as described in claim 1, characterized in that, The second tapering section includes a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence, and the first connecting segment is also connected to the straight pipe segment.

7. A compressor, characterized in that, Includes the silencing device as described in any one of claims 1 to 6.

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