Silencer and compressor

Abstract

The invention provides a silencer and a compressor. The silencer is used in the compressor and comprises a mounting part and a cavity part which are integrally formed, the cavity part protrudes out of the mounting part, and the mounting part extends in the axial direction deviating from the cavity part; the cavity type part comprises a side wall, the side wall extends in the direction away from the installation part, at least one exhaust port is formed in the side wall, and a notch communicated with the exhaust port is formed in the installation part. The silencer provided by the invention can be manufactured by adopting an integral forming process, so that the number of parts required by the silencer is reduced, the preparation process of the silencer is simplified, the production efficiency of the silencer is improved, and the production cost of the silencer is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a muffler and a compressor. Background Art

[0002] During compressor operation, high-speed airflow is intermittently discharged. This airflow, when discharged from the cylinder's exhaust port, causes pressure pulsation, leading to compressor noise. Currently, the primary method for reducing noise is the use of a muffler. The muffler's silencing process involves periodically opening the compressor's valve, allowing the refrigerant gas to exit the cylinder and flow into the muffler cavity, silencing the noise.

[0003] Figure 1 Schematic diagram of a muffler 100' in the prior art is shown. Figure 2 FIG. 1 shows a schematic diagram of a conventional muffler 100' and a pump assembly 200' of a compressor after assembly. Figure 1 and Figure 2 As shown, a conventional muffler 100' includes a mounting portion 10' and a cavity portion 20' protruding from the mounting portion 10'. The mounting portion 10' is provided with a mounting hole 11' for securing the muffler 100' to the pump assembly 200'. The cavity portion 20' is hollow, and the pump assembly 200' and the cavity portion 20' form a muffler cavity. When the compressed high-pressure refrigerant is discharged from the pump assembly 200', it enters the muffler cavity for muffler removal. The sidewall 21' of the cavity portion 20' is provided with at least one exhaust port 211'. The exhaust port 211' is a circular structure. The exhaust port 211' is also provided with a tail pipe 30'. The tail pipe 30' is inserted into the exhaust port 211' and the two are fixedly connected by welding. The tail pipe 30' is a hollow cylindrical shape and is used to guide the muffled refrigerant to the inner cavity of the compressor casing. The tail pipe 30' and the cavity portion 20' need to be connected by secondary welding and cannot be formed in one step, which makes the manufacturing process of the muffler 100' complicated, the production efficiency low, the manufacturing cost of the muffler 100' high, and further increases the cost of the compressor.

[0004] Therefore, there is an urgent need to improve the existing muffler structure to simplify the manufacturing process of the muffler.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include but does not constitute information on the prior art known to ordinary technicians in this field. Summary of the Invention

[0006] In view of the problems in the prior art, the purpose of the present invention is to provide a muffler and a compressor, simplify the preparation process of the muffler, improve the production efficiency of the muffler, and reduce the production cost of the muffler.

[0007] An embodiment of the present invention provides a muffler for use in a compressor, comprising an integrally formed mounting portion and a cavity portion, wherein the cavity portion protrudes from the mounting portion and the mounting portion extends axially away from the cavity portion; the cavity portion comprises a side wall, which extends in a direction away from the mounting portion, and at least one exhaust port is provided on the side wall, and a notch connected to the exhaust port is provided on the mounting portion.

[0008] In some embodiments, the silencer is made by a stamping process or a 3D printing process.

[0009] In some embodiments, the exhaust port is in an arched, circular, square, or triangular shape.

[0010] In some embodiments, the cavity portion further includes a cover plate, which is provided on a side of the side wall away from the mounting portion; the side wall extends around the circumference of the cover plate in a direction away from the mounting portion.

[0011] In some embodiments, a through hole is provided at the center of the cover plate, and the crankshaft of the compressor passes through the through hole.

[0012] In some embodiments, the cover plate is a petal-shaped structure uniformly distributed around the circumference of the through hole, and the cavity portion is evenly divided into a plurality of sub-chambers.

[0013] In some embodiments, the exhaust port is provided on a side wall of at least one of the sub-chambers, the height of the sub-chamber is H1, and the height of the exhaust port is H2, satisfying: 0.02≤H2 / H1<1.

[0014] In some embodiments, the exhaust port is provided on a side wall of at least one of the sub-chambers, the width of the sub-chamber is D1, and the width of the exhaust port is D2, satisfying: 0.02≤D2 / D1<1.

[0015] In some embodiments, the exhaust port is provided on the side wall of at least one of the sub-chambers, the cross section of the sub-chamber perpendicular to the mounting portion is S1, and the cross section of the exhaust port perpendicular to the mounting portion is S2, satisfying: 0.02≤S2 / S1<1.

[0016] An embodiment of the present invention further provides a compressor, comprising the muffler according to any one of the preceding claims.

[0017] In some embodiments, it also includes a shell and a motor assembly and a pump body assembly located in the shell, the pump body assembly includes a crankshaft, a cylinder, an upper cylinder head, a lower cylinder head and at least one exhaust structure, the exhaust structure is located on the upper cylinder head and / or the lower cylinder head, and is connected to the compression chamber inside the cylinder; the muffler cover is provided on at least one side of the upper cylinder head and / or the lower cylinder head, and forms a muffler chamber with the upper cylinder head and / or the lower cylinder head; the motor assembly drives the crankshaft to rotate, and is used to compress the refrigerant in the cylinder into high-pressure gas, and the high-pressure gas enters the muffler chamber of the muffler through the exhaust structure for silencing.

[0018] The muffler and compressor provided by the present invention have the following advantages:

[0019] The muffler is used in a compressor and includes an integrally formed mounting portion and a cavity portion, the cavity portion protruding from the mounting portion and extending axially away from the cavity portion; the cavity portion includes a sidewall extending away from the mounting portion, the sidewall being provided with at least one exhaust port, and the mounting portion being provided with a notch communicating with the exhaust port. The muffler provided by the present invention can be manufactured using an integral molding process, which reduces the number of parts required for the muffler, simplifies the muffler manufacturing process, improves the muffler production efficiency, and reduces the muffler production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of a muffler in the prior art;

[0022] Figure 2 yes Figure 1 Schematic diagram of the assembly of the muffler and the pump body assembly of the compressor;

[0023] Figure 3 is a schematic diagram of a muffler provided by one embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of a muffler provided by another embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the assembly of a muffler and a pump assembly of a compressor provided by one embodiment of the present invention;

[0026] Figure 6 yes Figure 5 A top view of the assembly of the muffler and pump assembly;

[0027] Figure 7 yes Figure 6 Sectional view along line AA;

[0028] Figure 8 The figure is a comparison of the noise reduction effects of the muffler provided by an embodiment of the present invention and the muffler in the prior art.

[0029] Reference numerals:

[0030] 30' Tail pipe 22 cover in the prior art

[0031] 100 Muffler 200 Pump Assembly

[0032] 10 Mounting portion 221 Through hole

[0033] 11 Mounting hole 210 Crankshaft

[0034] 12 notch 23 connection part

[0035] 20 Cavity 220 Cylinder

[0036] 21 side wall 230 upper cylinder head

[0037] 211 exhaust port DETAILED DESCRIPTION

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. In the figures, identical reference numerals denote identical or similar structures, and thus repetitive descriptions thereof will be omitted. The use of "or" and "either" in this specification may mean "and" or "or."

[0039] In the description of this application, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this application, as well as features of different embodiments or examples, unless otherwise contradictory.

[0040] Figure 3 FIG. 1 shows a schematic diagram of a muffler provided by an embodiment of the present invention. Figure 3As shown, the muffler 100 is used in a compressor, and includes an integrally formed mounting portion 10 and a cavity portion 20, the cavity portion 20 protruding from the mounting portion 10, and the mounting portion 10 extends axially away from the cavity portion 20; the cavity portion 20 includes a side wall 21, the side wall 21 extends in a direction away from the mounting portion 10, and at least one exhaust port 211 is provided on the side wall 21, and a notch 12 connected to the exhaust port 211 is provided on the mounting portion 10.

[0041] By providing a notch 12 on the mounting portion 10 and making the notch 12 communicate with a corresponding exhaust port 211, the mounting portion 10 and the cavity portion 20 can be formed into a silencer through a one-time molding process, thereby reducing the number of parts required to manufacture the silencer, simplifying the production process of the silencer, improving the production efficiency of the silencer, and reducing the production cost of the silencer.

[0042] In some embodiments, the muffler 100 is manufactured using an integrated molding process such as stamping or 3D printing. The present invention does not impose any specific limitation on the integrated molding process of the muffler.

[0043] Please continue reading Figure 3 In this embodiment, the exhaust port 211 is in the shape of an arched doorway. In other embodiments, the exhaust port 211 may be in any suitable shape such as a circle, an ellipse, a square or a triangle, and the present invention does not specifically limit this. Figure 3 As shown, since the side wall 21 where the exhaust port 211 is located is a certain distance away from the edge of the mounting portion 10 , the cavity portion 20 further includes a connecting portion 2111 , one end of the connecting portion 2111 is connected to the side wall 21 , and the other end is connected to the notch 12 . Figure 4 FIG. 1 shows a schematic diagram of a muffler provided by another embodiment of the present invention. Figure 4 As shown, the edge of the side wall 21 may be directly set flush with the edge of the mounting portion 10 without any distance, so there is no need to set the connecting portion 2111, further simplifying the production process when preparing the muffler 100.

[0044] Figure 5 A schematic diagram showing the assembly of a muffler and a pump assembly of a compressor provided by an embodiment of the present invention is shown; Figure 6 FIG1 shows a top view of the assembled silencer and the pump assembly of the compressor provided by the embodiment of the present invention. Figure 5 and Figure 6As shown, the mounting portion 10 is used to mount the muffler 100 on the pump body assembly 200. The mounting portion 10 is provided with a plurality of mounting holes 11, which can be specifically passed through the upper cylinder head and the mounting holes by bolts or screws to connect the upper cylinder head and the compressor muffler 100. Specifically, the number of mounting holes 11 in this embodiment is four. In other embodiments, the number of mounting holes 11 can be adjusted according to actual fixing requirements. The cavity portion 20 also includes a cover plate 22, which is provided on the side of the side wall 21 away from the mounting portion 10; the side wall 21 extends in a direction away from the mounting portion 10 around the circumference of the cover plate 22. A through hole 221 is provided in the center of the cover plate 22, and the crankshaft 210 of the pump body assembly 200 is passed through the through hole 221. The pump body assembly 200 also includes a cylinder 220, an upper cylinder head 230 that closes the two end faces of the cylinder 220, a lower cylinder head (not shown in the figure) and an exhaust structure 240. In this embodiment, the cavity portion 20 and the upper cylinder cover 230 together form a silencer cavity.

[0045] The specific process of silencing the compressor is as follows: the motor assembly drives the crankshaft 210 to rotate, thereby compressing the refrigerant in the cylinder 220. The compressed refrigerant is discharged from the cylinder 220 through the exhaust structure 240 and enters the silencer chamber for silencing. The silenced refrigerant is then discharged from the exhaust port 221 to the inside of the compressor shell.

[0046] like Figures 3 to 6 As shown, the cover plate 22 is a petal-shaped structure uniformly distributed around the circumference of the through hole 221. The cavity portion 20 is evenly divided into a plurality of sub-cavities, and the sub-cavities are interconnected. In this embodiment, the cavity portion is evenly divided into four sub-cavities.

[0047] To ensure the silencer's silencing effect, Figure 7 As shown, an exhaust port 211 is provided on the side wall of at least one sub-chamber, the height of the sub-chamber is H1, and the height of the exhaust port 211 is H2, satisfying: 0.02≤H2 / H1<1; the width of the sub-chamber is D1, and the width of the exhaust port 211 is D2, satisfying: 0.02≤D2 / D1<1; the cross-section of the sub-chamber perpendicular to the mounting portion 10 is S1, and the cross-section of the exhaust port 211 perpendicular to the mounting portion 10 is S2, satisfying: 0.02≤S2 / S1<1.

[0048] Figure 8 The figure shows the comparison of the noise reduction of the muffler provided by the embodiment of the present invention and the existing muffler, which is used to explore and confirm the noise reduction effect of the muffler provided by the embodiment of the present invention. Figure 8 As shown, the horizontal axis is the air flow pulsation frequency, the unit is Hz, the vertical axis is the sound attenuation, the unit is dB (decibel), the solid line curve represents the relationship between the sound attenuation of the improved silencer and the frequency of air flow pulsation, and the dotted line curve represents the relationship between the sound attenuation of the silencer before improvement and the frequency of air flow pulsation. Figure 8It can be seen that, under the same airflow pulsation frequency, the sound attenuation of the muffler of the present invention is greater than that of the existing muffler, that is, the muffler provided by the present invention has a better sound attenuation effect.

[0049] An embodiment of the present invention further provides a compressor including the aforementioned muffler. The compressor can achieve all the technical effects achieved by the aforementioned muffler. The muffler can be manufactured using an integrated molding process, which can improve the production efficiency of the muffler, increase the output of the muffler, reduce the production cost of the muffler, and thus reduce the cost of the compressor.

[0050] Specifically, the compressor also includes a shell and a motor assembly and a pump body assembly located in the shell. The pump body assembly includes a crankshaft, a cylinder, an upper cylinder head, a lower cylinder head and at least one exhaust structure. The exhaust structure is located on the upper cylinder head and / or the lower cylinder head and is connected to the compression chamber inside the cylinder; the muffler cover is provided on at least one side of the upper cylinder head and / or the lower cylinder head; the motor assembly drives the crankshaft to rotate, and is used to compress the refrigerant in the cylinder into high-pressure gas. The high-pressure gas enters the muffler chamber of the muffler through the exhaust structure for silencing.

[0051] In summary, the muffler and compressor provided by the present invention have the following advantages:

[0052] The present invention provides a silencer and a compressor. The silencer is used in a compressor, and includes an integrally formed mounting portion and a cavity portion, wherein the cavity portion protrudes from the mounting portion and extends axially away from the cavity portion; the cavity portion includes a sidewall, which extends away from the mounting portion, and the sidewall is provided with at least one exhaust port, and the mounting portion is provided with a notch connected to the exhaust port. The silencer provided by the present invention can be manufactured using an integral molding process, which reduces the number of parts required for the silencer, simplifies the preparation process of the silencer, improves the production efficiency of the silencer, and reduces the production cost of the silencer.

[0053] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A muffler, characterized in that: Used in a compressor, it includes an integrally formed mounting portion and a cavity portion, the cavity portion protrudes from the mounting portion, and the mounting portion extends axially away from the cavity portion; the cavity portion includes a side wall, the side wall extends in a direction away from the mounting portion, at least one exhaust port is provided on the side wall, and the mounting portion is provided with a notch connected to the exhaust port.

2. The muffler according to claim 1, characterized in that The silencer is made by a stamping process or a 3D printing process.

3. The muffler according to claim 1, characterized in that The shape of the exhaust port is arched, circular, elliptical, square or triangular.

4. The muffler according to claim 1, wherein: The cavity portion further includes a cover plate, which is arranged on a side of the side wall away from the mounting portion; the side wall extends around the circumference of the cover plate in a direction away from the mounting portion.

5. The muffler according to claim 4, characterized in that A through hole is provided at the center of the cover plate, and the crankshaft of the compressor passes through the through hole.

6. The muffler according to claim 5, characterized in that The cover plate is a petal-shaped structure uniformly distributed around the circumference of the through hole, and the cavity portion is evenly divided into a plurality of sub-chambers.

7. The muffler according to claim 6, characterized in that The exhaust port is provided on a side wall of at least one of the sub-chambers, the height of the sub-chamber is H1, and the height of the exhaust port is H2, satisfying: 0.02≤H2 / H1<1.

8. The muffler according to claim 6, characterized in that The exhaust port is provided on a side wall of at least one of the sub-chambers. The width of the sub-chamber is D1, and the width of the exhaust port is D2, satisfying the following relationship: 0.02≤D2 / D1<1.

9. The muffler according to claim 6, characterized in that The exhaust port is provided on a side wall of at least one of the sub-chambers, a cross section of the sub-chamber perpendicular to the mounting portion is S1, a cross section of the exhaust port perpendicular to the mounting portion is S2, and the relationship: 0.02≤S2 / S1<1 is satisfied.

10. A compressor, characterized in that: Comprising the silencer according to any one of claims 1 to 9.

11. The compressor according to claim 10, characterized in that It also includes a shell and a motor assembly and a pump body assembly located in the shell, the pump body assembly includes a crankshaft, a cylinder, an upper cylinder head, a lower cylinder head and at least one exhaust structure, the exhaust structure is located on the upper cylinder head and / or the lower cylinder head, and is connected to the compression chamber inside the cylinder; the muffler cover is provided on at least one side of the upper cylinder head and / or the lower cylinder head, and forms a muffler chamber with the upper cylinder head and / or the lower cylinder head; the motor assembly drives the crankshaft to rotate, and is used to compress the refrigerant in the cylinder into high-pressure gas, and the high-pressure gas enters the muffler chamber through the exhaust structure for silencing.

Images