Novel exhaust silencing cover cavity structure

Abstract

The utility model discloses a novel exhaust silencing cover cavity structure which comprises a cover body, a crankshaft hole is formed in the middle of the cover body, a plurality of first cavities and a plurality of second cavities are formed in the cover body, and the first cavities and the second cavities are symmetrically distributed on the outer side of the crankshaft hole respectively. A first partition plate is arranged between every two adjacent first cavities, a second partition plate is arranged between the adjacent first cavities and the second cavities, vent holes are formed in the second partition plates, and exhaust holes are formed in the second cavities. The two adjacent first cavities are separated through the first partition plate, so that the situation that gas in the adjacent first cavities moves in the opposite directions, consequently, turbulence is caused, and the silencing effect is affected is avoided; and the ventilation holes are formed in the second partition plate, so that the flowing direction of gas in the first cavity and the second cavity is limited, and the silencing effect of the silencing cover is further improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, specifically to a novel exhaust muffler cover cavity structure. Background Technology

[0002] A compressor is a machine that compresses low-pressure gas into high-pressure gas. After drawing in low-temperature, low-pressure refrigerant gas through the suction pipe, it is compressed into high-temperature, high-pressure gas by the piston and discharged from the exhaust pipe, providing power for the refrigeration cycle.

[0003] During the operation of the compressor, the compressed gas enters the exhaust silencer chamber of the silencer cover from the cylinder, and then exits through the exhaust port in the exhaust silencer chamber. The exhaust silencer chamber of the silencer cover can reduce the noise during the gas flow process. However, when the gas flows in the silencer chamber, some of the gas in the adjacent silencer chambers will move towards each other after being reflected by the inner wall of the chamber, which will cause gas turbulence and affect the silencer effect. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a novel exhaust muffler cover cavity structure. By setting a first baffle and a second baffle, the turbulence of gas in the muffler cavity is reduced, thereby improving the muffler cover's noise reduction effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A novel exhaust muffler cover cavity structure includes a cover body with a crankshaft hole in the middle. The cover body contains a plurality of first chambers and second chambers, which are symmetrically distributed on the outer side of the crankshaft hole. A first partition is provided between two adjacent first chambers, and a second partition is provided between adjacent first chambers and second chambers. Vent holes are provided on the second partitions, and exhaust holes are provided in the second chambers.

[0007] In the above technical solution, the first partition separates the two adjacent first chambers, preventing the gas in the adjacent first chambers from moving towards each other, thus causing turbulence and affecting the noise reduction effect; by setting the vent in the second partition, the flow direction of the gas in the first chamber and the second chamber is restricted, further improving the noise reduction effect of the noise reduction cover.

[0008] Furthermore, the volume of the first chamber is larger than that of the second chamber. Increasing the volume of the first chamber increases the propagation path of gas when it enters the silencer cover, thereby better absorbing the energy of sound waves and improving the silencing effect.

[0009] Furthermore, the first chamber and the second chamber have protrusions formed on the outer surface of the cover body, and connecting holes are provided between adjacent protrusions. The cover is then connected to a bearing assembly through these connecting holes to secure it.

[0010] Furthermore, both the first and second partitions are inclined on their sides near the shaft hole, with the sides gradually approaching the shaft hole from top to bottom. This inclined arrangement of the first and second partitions near the shaft hole provides sufficient mounting space for the crankshaft.

[0011] Furthermore, the lowest point of the vent is 1mm to 5mm away from the bottom of the second partition. Since the exhaust port is located at the bottom of the second chamber, placing the vent close to the exhaust port facilitates the gas flow from the first chamber into the second chamber and out through the exhaust port, thereby improving gas flow efficiency.

[0012] Furthermore, the thickness of the first partition and the second partition is 3mm to 5mm. This thickness ensures the structural strength of the first partition and the second partition.

[0013] Furthermore, the inner walls of both the first and second chambers are curved surfaces. By making the first and second chambers curved, the curvature can guide the flow of gas, reduce gas turbulence, and thus improve the noise reduction effect.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The first partition separates the two adjacent first chambers, preventing the gas in the adjacent first chambers from moving towards each other, thus avoiding turbulence and affecting the silencing effect; by setting vent holes in the second partition, the flow direction of gas in the first and second chambers is restricted, further improving the silencing effect of the silencing cover.

[0016] 2. By increasing the volume of the first chamber, the propagation path of gas when it enters the silencer cover is increased, thereby better absorbing the energy of sound waves and improving the silencing effect.

[0017] 3. By setting the first and second chambers as curved surfaces, the curved surfaces can guide the flow of gas, reduce the occurrence of gas turbulence, and thus improve the noise reduction effect. Attached Figure Description

[0018] Figure 1 This is a first structural schematic diagram of a novel exhaust muffler cover cavity structure according to the present invention;

[0019] Figure 2 This is a second structural schematic diagram of a novel exhaust muffler cover cavity structure according to the present invention.

[0020] In the figure: 1. Cover; 2. First chamber; 3. Second chamber; 4. First partition; 5. Second partition; 6. Vent hole; 7. Exhaust hole; 8. Connecting hole; 9. Shaft hole; 10. Protrusion. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following is combined Figures 1 to 2 The present invention provides a detailed description of a novel exhaust muffler cover cavity structure through specific embodiments and application scenarios.

[0025] A novel exhaust muffler cover cavity structure includes a cover body 1, with a shaft hole 9 in the middle of the cover body 1. The cover body 1 contains a plurality of first chambers 2 and second chambers 3, which are symmetrically distributed on the outside of the crankshaft hole 9. A first partition 4 is provided between two adjacent first chambers 2, and a second partition 5 is provided between adjacent first chambers 2 and second chambers 3. A vent hole 6 is provided on the second partition 5, and an exhaust hole 7 is provided in the second chamber 3.

[0026] Specifically, in this embodiment, such as Figure 1As shown, the muffler cover of this utility model has a symmetrical overall structure, comprising three first chambers 2 and two second chambers 3. Two first chambers 2 are arranged adjacent to each other, with an angle of 85° between the centerline of the two adjacent first chambers 2 and the center of the shaft hole 9. The third first chamber 2 is located between the two second chambers 3. A first partition 4 is provided between the two adjacent first chambers 2. When gas enters the muffler cover from the cylinder, it first reaches the two adjacent first chambers 2. Reflected by the inner wall of the first chambers 2, some of the gas in the adjacent first chambers 2 moves towards each other, causing gas turbulence and affecting the muffler effect. The first partition 4 separates the two adjacent first chambers 2, preventing turbulence caused by the gas moving towards each other, thereby improving the muffler effect. A second chamber 3 is provided on the other side of each of the two adjacent first chambers 2. A second partition 5 is fixedly connected between the first chamber 2 and the second chamber 3. The second partition 5 has a vent hole 6 for gas movement. An exhaust hole 7 is provided at the bottom of the second chamber 3. The gas in the two adjacent first chambers 2 enters the second chamber 3 through the exhaust hole 7 in the second partition 5. The second partition 5 can restrict the flow of gas to the vent hole 6, thereby further improving the noise reduction effect of the silencing cover of this utility model.

[0027] Furthermore, such as Figure 1 As shown, in this embodiment, the volume of the first chamber 2 is larger than that of the second chamber 3. By increasing the volume of the first chamber 2, the propagation path of the gas when it enters the silencer cover is increased, thereby better absorbing the energy of the sound waves and improving the silencer effect.

[0028] Furthermore, such as Figure 2 As shown, in this embodiment, the first chamber 2 and the second chamber 3 have protrusions 10 formed on the outer surface of the cover 1, and a connecting hole 8 is provided between adjacent protrusions 10. The cover is then connected to the bearing assembly through the connecting hole 8 to fix the silencing cover.

[0029] Furthermore, such as Figure 1 As shown, in this embodiment, the first partition 4 and the second partition 5 have similar overall structures. The side of the first partition 4 and the second partition 5 away from the shaft hole 9 is connected to the inner wall of the cover 1, and the upper end face of the first partition 4 and the second partition 5 is flush with the inner end face of the cover 1. At the same time, the lower end face of the first partition 4 and the second partition 5 extends to the shaft hole 9. The sides of the first partition 4 and the second partition 5 near the shaft hole 9 are both inclined, and these sides gradually approach the shaft hole 9 from top to bottom. The inclined surface provides sufficient installation space when installing the muffler cover with the crankshaft.

[0030] Furthermore, such as Figure 1As shown, in this embodiment, the distance between the lowest point of the vent 6 and the bottom of the second partition 5 is 1mm to 5mm, preferably 3mm. Since the exhaust port 7 is located at the bottom of the second chamber 3, placing the vent 6 close to the exhaust port 7 helps the gas to exit through the exhaust port 7 after entering the second chamber 3 from the first chamber 2, thereby improving the efficiency of gas flow.

[0031] Furthermore, such as Figure 1 As shown, in this embodiment, the thickness of the first partition 4 and the second partition 5 is 3mm to 5mm, preferably 4mm. This thickness ensures the structural strength of the first partition 4 and the second partition 5 and prevents them from being damaged during compressor operation.

[0032] Furthermore, such as Figure 1 As shown, the inner walls of the first chamber 2 and the second chamber 3 are both curved surfaces. By setting the first chamber 2 and the second chamber 3 to be curved surfaces, the flow of gas can be guided, the occurrence of gas turbulence can be reduced, and thus the noise can be reduced.

[0033] It should be noted that the working principle of the exhaust muffler cover cavity structure of this utility model is as follows: when gas enters the two adjacent first chambers 2 from the cylinder, the first baffle 4 blocks some of the turbulence caused by the gas moving in opposite directions, thereby improving the muffler effect. The second baffle 5 further restricts the flow direction of the gas between the first chamber 2 and the second chamber 3, so that the gas can only flow in the vent 6, further improving the muffler effect. Through the exhaust muffler cover cavity structure of this novel invention, the operating noise of the compressor can be further reduced, while not affecting the normal exhaust and operation of the compressor.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel exhaust muffler cover cavity structure, characterized in that, Includes a cover (1), a crankshaft hole (9) is provided in the middle of the cover (1), and a plurality of first chambers (2) and second chambers (3) are provided inside the cover (1). The plurality of first chambers (2) and second chambers (3) are symmetrically distributed on the periphery of the crankshaft hole (9). A first partition (4) is provided between two adjacent first chambers (2), and a second partition (5) is provided between adjacent first chambers (2) and second chambers (3). A vent hole (6) is provided on the second partition (5), and an exhaust hole (7) is provided inside the second chamber (3).

2. The novel exhaust muffler cover cavity structure according to claim 1, characterized in that, The volume of the first chamber (2) is greater than the volume of the second chamber (3).

3. The novel exhaust muffler cover cavity structure according to claim 1, characterized in that, Both the first chamber (2) and the second chamber (3) have protrusions (10) formed on the outer surface of the cover (1), and a connecting hole (8) is provided between adjacent protrusions (10).

4. The novel exhaust muffler cover cavity structure according to claim 1, characterized in that, The first partition (4) and the second partition (5) are both inclined on the side near the shaft hole (9), and the side gradually approaches the shaft hole (9) from top to bottom.

5. The novel exhaust muffler cover cavity structure according to claim 1, characterized in that, The distance between the lowest point of the vent (6) and the bottom of the second partition (5) is 1mm to 5mm.

6. The novel exhaust muffler cover cavity structure according to claim 1, characterized in that, The thickness of the first partition (4) and the second partition (5) is 3mm to 5mm.

7. The novel exhaust muffler cover cavity structure according to claim 1, characterized in that, The inner walls of the first chamber (2) and the second chamber (3) are both curved surfaces.

Images