Compressor silencer

Abstract

The utility model discloses a compressor silencer which comprises a silencer shell and a top cover, and the silencer shell and the top cover are buckled with each other and arranged in a sealed mode. Two cavities which are communicated with each other are formed in the silencer shell and are the air inlet cavity and the air outlet cavity respectively, and the air inlet cavity and the air outlet cavity are separated through a partition plate. An air inlet pipe is arranged on the side, away from the exhaust cavity, of the silencer shell and directly communicates with the air inlet cavity, and an air outlet pipe is arranged on one side of the top of the top cover and directly communicates with the exhaust cavity. A transition pipe used for communicating the air inlet cavity with the exhaust cavity is arranged on the partition plate, and the part, located in the air inlet cavity, of the transition pipe is arranged downwards in an inclined mode. The machining difficulty and the design difficulty of the mold are low, forming and manufacturing are easy, and the outlet of the air inlet pipe and the interception ring are used for intercepting refrigerant oil remaining in the compressor.

Description

Technical Field

[0001] The utility model relates to the field of mufflers, in particular to a compressor muffler. Background Art

[0002] A silencer is a noise reduction device that can be used to reduce noise in airflow pipes that transmit noise, such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance, to attenuate or reflect the noise in the pipe. The former is called a resistive silencer, the latter is called a reactive silencer, and there are also impedance composite silencers.

[0003] For example, our company's patent with authorization announcement number CN208885474U discloses a refrigerator silencer that is easy to manufacture. The silencer body is composed of a first shell and a second shell both of which are provided with concave cavities. A partition integrated with the second shell is provided in the concave cavity of the second shell. The partition is sealed and assembled with the first shell to divide the concave cavity formed by the combination of the first shell and the second shell into independent first chambers and second chambers. The air inlet is arranged on the first shell, and the air outlet is arranged on the second shell. A straight pipe connecting the first chamber and the second chamber is also arranged on the partition. A groove structure with an outer opening is arranged on the first shell, and the bottom of the groove structure is arranged to be integrated with the side wall of the straight pipe facing the bottom of the concave cavity of the first shell. An installation groove for embedding the opening contour of the first shell is provided on the second shell at the joint of the first shell and the second shell.

[0004] The above patent facilitates the molding and manufacturing of the first shell and the second shell that constitute the muffler body, and the assembly is convenient and fast; however, the above patent has the disadvantage that when the compressor runs at high speed, the refrigerant oil in the mixed gas is easily accumulated on the filter, which reduces the mixed gas passing through the filter.

[0005] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of the utility model is to provide a compressor muffler to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A compressor muffler comprises a muffler shell and a top cover, wherein the muffler shell and the top cover are buckled with each other and sealed; the muffler shell is provided with two interconnected chambers, namely an air intake chamber and an exhaust chamber, and the air intake chamber and the exhaust chamber are separated from each other by a partition; an air intake pipe is provided on the side of the muffler shell away from the exhaust chamber, and the air intake pipe is directly connected to the air intake chamber; an air outlet pipe is provided on the top side of the top cover, and the air outlet pipe is directly connected to the exhaust chamber; a transition pipe for connecting the air intake chamber and the exhaust chamber is provided on the partition, and the transition pipe is located at a part of the air intake chamber. The muffler shell includes an inner shell and an outer shell sleeved on the outside of the inner shell, the air intake chamber and the exhaust chamber are both located inside the inner shell, and there is a cavity between the inner shell and the outer shell; the air intake pipe is integrally formed with the inner shell, and the part of the air intake pipe located inside the air intake chamber is tilted downward, wherein the outlet at the end of the air intake pipe is arranged toward the side wall of the air intake chamber; a plurality of layers of retaining rings are also arranged on the inner wall of the air intake chamber, and the inner side of the retaining rings is tilted downward, and the horizontal heights of the plurality of layers of retaining rings are all located between the outlet at the end of the air intake pipe and the end outlet on the left side of the transition pipe.

[0009] Furthermore, the bottoms and sides of the inner shell and the outer shell are both arranged in arc shapes.

[0010] Furthermore, a plurality of connecting ribs are evenly spaced on the outer wall of the inner shell, and the connecting ribs are vertically arranged from top to bottom along the outer wall of the inner shell, while a plurality of connecting grooves are correspondingly evenly spaced on the inner wall of the outer shell, and the connecting grooves are also vertically arranged from top to bottom along the inner wall of the outer shell; the connecting ribs on the inner shell are inserted into the connecting grooves of the outer shell.

[0011] Furthermore, the partition is integrally formed with the inner shell, and the thickness of the partition is at least twice the thickness of the inner shell.

[0012] Furthermore, a U-shaped groove for the air intake pipe to pass through is provided on the side of the outer shell; at the same time, a plugging plate is provided downwardly at the top cover corresponding to the U-shaped groove, and the bottom of the plugging plate is arranged in an arc shape to press the upper part of the air intake pipe.

[0013] Furthermore, in order to ensure the sealing of the top of the air inlet chamber and the exhaust chamber, the bottom of the top cover is also provided with an air inlet chamber plug and an exhaust chamber plug, which are respectively plugged into the top openings of the air inlet chamber and the exhaust chamber, thereby effectively improving the sealing effect.

[0014] Furthermore, a sealing ring is provided at the bottom of the top cover, located at the periphery of the air inlet cavity plug and the exhaust cavity plug, and the sealing ring is used to be inserted into the top of the cavity between the inner shell and the outer shell.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] Two single-layer inner shells and an outer shell are used to assemble a muffler shell with a cavity between them. The processing difficulty and mold design difficulty are low, the molding and manufacturing are simple, and the assembly is convenient and fast.

[0017] The outlet arrangement of the air inlet pipe and the arrangement of the retaining ring are used to retain the refrigeration oil remaining in the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a compressor muffler.

[0019] Figure 2 A front view of a compressor muffler.

[0020] Figure 3 A side view of a compressor muffler.

[0021] Figure 4 for Figure 3 Sectional view along AA direction.

[0022] Figure 5 An exploded view of a compressor muffler.

[0023] Figure 6 The present invention is a schematic diagram of the structure of a top cover in a compressor muffler. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] See also Figure 1-6 A compressor muffler comprises a muffler housing 1 and a top cover 18.

[0026] The muffler housing 1 is provided with two interconnected chambers, namely an air intake chamber 2 and an exhaust chamber 3, and the air intake chamber 2 and the exhaust chamber 3 are separated from each other by a partition plate 4;

[0027] The air intake chamber 2 and the exhaust chamber 3 form two expansion chamber mufflers connected in series. This structure can avoid the muffler volume trough that may occur when there is only a single chamber, and achieve a muffler effect. This structure is a prior art and is only used for explanation, not for the purpose of protecting this technical point.

[0028] An air inlet pipe 5 is arranged on one side of the muffler housing 1 away from the exhaust chamber 3, and the air inlet pipe 5 is directly connected to the air inlet chamber 2. An air outlet pipe 6 is arranged on one side of the top cover 18, and the air outlet pipe 6 is directly connected to the exhaust chamber 3. A transition pipe 11 for connecting the air inlet chamber 2 and the exhaust chamber 3 is arranged on the partition plate 4, and the part of the transition pipe 11 located in the air inlet chamber 2 is arranged to be inclined downward.

[0029] The muffler housing 1 and the top cover 18 are buckled and sealed with each other;

[0030] In this solution, the muffler housing 1 includes an inner housing 7 and an outer housing 8 sleeved on the outer side of the inner housing 7, the air intake chamber 2 and the exhaust chamber 3 are both located inside the inner housing 7, and there is a cavity between the inner housing 7 and the outer housing 8; the cavity is used to prevent the noise generated in the internal chamber of the muffler housing 1 from being transmitted to the outside;

[0031] The bottom and sides of the inner shell 7 and the outer shell 8 are both arc-shaped.

[0032] In this solution, a plurality of connecting ribs 9 are evenly spaced on the outer wall of the inner shell 7, and the connecting ribs are vertically arranged from top to bottom along the outer wall of the inner shell 7, and a plurality of connecting grooves 10 are correspondingly arranged at even intervals on the inner wall of the outer shell 8, and the connecting grooves 10 are also vertically arranged from top to bottom along the inner wall of the outer shell 8; the connecting ribs 9 on the inner shell 7 are inserted into the connecting grooves 10 of the outer shell 8,

[0033] During assembly, the inner shell 7 is inserted through the top opening of the outer shell 10, and the connecting ribs 9 on the inner shell 7 are inserted into the connecting grooves 10 of the outer shell 8, thereby fixing the inner shell 7 in the outer shell 8 and providing a cavity between the inner shell 7 and the outer shell 8;

[0034] In this solution, two single-layer inner shells 7 and outer shells 8 are used to assemble a muffler shell 1 with a cavity between them. Compared with directly injection molding an integrally formed inner shell 7 and outer shell 8, the processing difficulty and mold design difficulty are lower;

[0035] At the same time, in this solution, the partition 5 is integrally formed with the inner shell 7, and the thickness of the partition 5 is at least twice the thickness of the inner shell 7, so as to prevent the partition 5 from vibrating during use;

[0036] In this embodiment, the air intake pipe 5 is integrally formed with the inner shell 7, and the portion of the air intake pipe 5 located inside the air intake chamber 2 is tilted downward, wherein the outlet at the end of the air intake pipe 5 is disposed toward the side wall of the air intake chamber 2;

[0037] It is worth noting that, since the air intake pipe 5 is integrally formed with the inner shell 7, a U-shaped groove 13 is provided on the side of the outer shell 8 for the air intake pipe 5 to pass through; at the same time, a plugging plate 14 is provided downwardly at the top cover 18 corresponding to the U-shaped groove 13, and the bottom of the plugging plate 14 is arranged in an arc shape to press the upper part of the air intake pipe 5;

[0038] At the same time, in order to ensure the sealing of the top of the air intake chamber 2 and the exhaust chamber 3, the bottom of the top cover 18 is also provided with an air intake chamber plug 15 and an exhaust chamber plug 16. The air intake chamber plug 15 and the exhaust chamber plug 16 are respectively plugged into the top openings of the air intake chamber 2 and the exhaust chamber 3, thereby effectively improving the sealing effect.

[0039] At the same time, a sealing ring 17 is provided at the bottom of the top cover 18, which is located at the periphery of the air inlet plug 15 and the exhaust plug 16. The sealing ring 17 is used to be inserted into the top of the cavity between the inner shell 7 and the outer shell 8.

[0040] At the same time, in this solution, a multi-layer retaining ring 12 is also provided on the inner wall of the air intake chamber 2, and the inner side of the retaining ring 12 is arranged to be inclined downward, and the horizontal height of the multi-layer retaining ring 12 is located between the outlet at the end of the air intake pipe 5 and the outlet at the end on the left side of the transition pipe 11;

[0041] When the utility model is used, the fluid enters the air inlet pipe, and the outlet at the end of the air inlet pipe 5 is arranged toward the side wall of the air inlet chamber 2, so that most of the refrigerant oil in the fluid introduced by the air inlet pipe is directly sprayed on the side wall of the air inlet chamber below the retention ring, and then this part of the refrigerant oil can be blocked by the retention ring 12, and most of the refrigerant oil mixed in the transition pipe 11 can also be retained by the retention ring 12, and the remaining fluid enters the exhaust chamber 3 through the transition pipe 11, and is finally discharged through the air outlet pipe.

[0042] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

Claims

1. A compressor muffler, comprising a muffler shell and a top cover, wherein the muffler shell and the top cover are mutually buckled and sealed; the muffler shell is provided with two interconnected chambers, namely an air intake chamber and an exhaust chamber, and the air intake chamber and the exhaust chamber are separated from each other by a partition; characterized in that: An air inlet pipe is arranged on a side of the muffler shell away from the exhaust chamber, and the air inlet pipe is directly connected to the air inlet chamber. An air outlet pipe is arranged on a top side of the top cover, and the air outlet pipe is directly connected to the exhaust chamber. A transition pipe for connecting the air inlet chamber and the exhaust chamber is arranged on the partition, and the part of the transition pipe located in the air inlet chamber is inclined downward. The muffler shell includes an inner shell and an outer shell sleeved on the outer side of the inner shell, and the air inlet chamber and the exhaust chamber are both located inside the inner shell, and there is a cavity between the inner shell and the outer shell. The air inlet pipe is integrally formed with the inner shell, and the part of the air inlet pipe located inside the air inlet chamber is inclined downward, and the outlet at the end of the air inlet pipe is arranged toward the side wall of the air inlet chamber. A plurality of layers of retaining rings are also arranged on the inner wall of the air inlet chamber, and the inner side of the retaining rings is inclined downward, and the horizontal heights of the plurality of layers of retaining rings are all between the outlet at the end of the air inlet pipe and the end outlet on the left side of the transition pipe.

2. A compressor muffler according to claim 1, characterized in that: The bottoms and sides of the inner shell and the outer shell are both arranged in arc shapes.

3. A compressor muffler according to claim 1, characterized in that: A plurality of connecting ribs are evenly spaced on the outer wall of the inner shell, and the connecting ribs are vertically arranged from top to bottom along the outer wall of the inner shell, while a plurality of connecting grooves are correspondingly evenly spaced on the inner wall of the outer shell, and the connecting grooves are also vertically arranged from top to bottom along the inner wall of the outer shell; the connecting ribs on the inner shell are inserted into the connecting grooves of the outer shell.

4. A compressor muffler according to claim 1, characterized in that: The partition is integrally formed with the inner shell, and the thickness of the partition is at least twice the thickness of the inner shell.

5. A compressor muffler according to claim 1, characterized in that: The side of the outer shell is provided with a U-shaped groove for the air intake pipe to pass through; at the same time, a plugging plate is provided downwardly at the top cover corresponding to the U-shaped groove, and the bottom of the plugging plate is arranged in an arc shape for pressing the upper part of the air intake pipe.

6. A compressor muffler according to claim 1, characterized in that: In order to ensure the sealing of the top of the air inlet chamber and the exhaust chamber, the bottom of the top cover is also provided with an air inlet chamber plug and an exhaust chamber plug, which are respectively plugged into the top openings of the air inlet chamber and the exhaust chamber, effectively improving the sealing effect.

7. A compressor muffler according to claim 6, characterized in that: The bottom of the top cover is located at the periphery of the air inlet cavity plug and the exhaust cavity plug and is also provided with a circle of sealing ring, which is used to be inserted into the top of the cavity between the inner shell body and the outer shell body.

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