CN111894832B

CN111894832B - Air suction silencer, compressor and refrigerator

Info

Publication number: CN111894832B
Application number: CN202010693136.0A
Authority: CN
Inventors: 赵旭敏; 张率华; 徐敏; 严耀宗; 申婷
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-12-28
Anticipated expiration: 2040-07-17
Also published as: CN111894832A

Abstract

The invention provides a suction muffler, a compressor and a refrigerator, wherein the suction muffler comprises a shell, an air inlet and an air outlet are formed in the shell, a partition plate is arranged in an inner cavity of the shell, the partition plate divides the inner cavity into an upper cavity corresponding to the air outlet and a lower cavity corresponding to the air inlet, a plurality of through holes penetrating through the upper cavity and the lower cavity are formed in the partition plate, the suction muffler further comprises a plurality of oil-gas separation covers, the oil-gas separation covers are respectively covered on the through holes in a one-to-one correspondence mode and are positioned on one side, facing the upper cavity, of the partition plate, and a through hole is formed in the oil-gas separation covers to penetrate through the upper cavity and the lower cavity. According to the air suction silencer, the compressor and the refrigerator, the air suction oil carrying amount of the air cylinder can be reduced, the air suction flow resistance and the air suction noise can be reduced, and air suction is more uniform and smooth.

Description

Air suction silencer, compressor and refrigerator

Technical Field

The invention belongs to the technical field of refrigeration, and particularly relates to a suction muffler, a compressor and a refrigerator.

Background

When the piston compressor operates at high frequency, the lubricating oil is discharged in the oil applying and throwing process of the crankshaft in a large amount; meanwhile, a large amount of heat is generated inside the shell, the shell is in a high-temperature adverse state, especially, lubricating oil is easy to form oil mist, and the lubricating oil can enter the air suction silencer more easily, so that the air suction noise has large oil quantity, the compression power consumption of the compressor is increased, the performance of the compressor and the heat transfer efficiency of a system are reduced, meanwhile, the noise of the compressor is also influenced by airflow noise in the air suction silencer, and how to arrange the baffle reasonably, and reduce the air suction resistance and the noise become important concerns for designing the air suction silencer.

Disclosure of Invention

Therefore, an object of the present invention is to provide an intake silencer, a compressor, and a refrigerator, which can reduce the amount of oil in the intake air of the cylinder, and can reduce the intake airflow resistance and intake noise, so as to make the intake more uniform and smooth.

In order to solve the problems, the invention provides a suction muffler, which comprises a shell, wherein an air inlet and an air outlet are formed in the shell, a partition plate is arranged in an inner cavity of the shell, the partition plate divides the inner cavity into an upper cavity corresponding to the air outlet and a lower cavity corresponding to the air inlet, a plurality of through holes penetrating through the upper cavity and the lower cavity are formed in the partition plate, the suction muffler further comprises a plurality of oil-gas separation covers, the oil-gas separation covers are respectively covered on the through holes in a one-to-one correspondence manner and are positioned on one side, facing the upper cavity, of the partition plate, and a through hole is formed in the oil-gas separation covers to penetrate through the upper cavity and the lower cavity.

Preferably, the oil-gas separation cover is supported on one side of the partition plate facing the upper cavity or hung on a wall body of the shell corresponding to the upper cavity.

Preferably, the oil-gas separation cover is provided with a supporting side wall connected with the partition plate and an oil separation and collection top wall positioned at one end of the supporting side wall far away from the partition plate, and the oil separation and collection top wall is of a structure arched towards one side far away from the partition plate.

Preferably, the through-flow holes are provided in the support side wall.

Preferably, the middle region of the oil separation and collection ceiling wall has a cone extending toward one side of the partition, and a vertex of the cone faces the through hole.

Preferably, the flow direction of the gas flow from the lower chamber to the upper chamber is a first direction, and the flow area of the through hole is gradually reduced along the first direction.

Preferably, the cross section of the through hole is one of a polygon, a circle or an ellipse.

Preferably, the volume of the lower chamber is greater than the volume of the upper chamber; and/or one side of the partition board facing the lower cavity is a first side, the total surface area of the first side is Sg, the total area of the orifices of the first side corresponding to the through holes is Sk, and the total area of the orifices of the first side is not less than 1/4 and not more than Sk/Sg and not more than 1/2.

Preferably, an oil leakage opening is further formed in the shell, and the oil leakage opening is arranged on a wall body of the shell corresponding to the upper cavity.

Preferably, the through holes are uniformly distributed on the partition plate; and/or when the compressor is a small-displacement compressor, the through holes are distributed in the area of the partition plate close to the air inlet; and/or when the compressor is a large-discharge compressor or a high-frequency compressor, the through holes are distributed in the area of the partition plate close to the exhaust port.

The invention also provides a compressor, which comprises the suction muffler.

The invention also provides a refrigerator comprising the compressor.

The invention provides a suction muffler, a compressor and a refrigerator, wherein a plurality of through holes on a partition plate and an oil-gas separation cover covering the through holes form a noise reduction structure for the inlet air flow of the suction muffler (the oil-gas separation cover and the partition plate form a noise reduction cavity), and can also separate the mist lubricating oil mixed in the inlet air flow, thereby the air suction muffler can effectively reduce the air suction noise of the compressor and can also effectively reduce the oil content brought by the air suction of the compressor cylinder, further, the invention simplifies the noise reduction and oil-gas separation structure in a functional composite structure, simplifies the air inlet flow passage and ensures that the air flow flows more smoothly, this is advantageous in reducing the local pressure loss of the fluid, i.e. in reducing the suction resistance, and in improving the suction efficiency and thus the compressor performance.

Drawings

FIG. 1 is a schematic view of the internal structure of a suction muffler according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a top view of FIG. 1;

fig. 4 is a schematic view of an internal structure of a compressor according to another embodiment of the present invention.

The reference numerals are represented as:

1. a housing; 11. an air inlet; 12. an exhaust port; 13. a partition plate; 14. an upper chamber; 15. a lower cavity; 16. a through hole; 17. an oil-gas separation hood; 171. a support sidewall; 172. an oil separating and collecting top wall; 173. a cone; 18. an oil leakage port; 2. a suction muffler; 3. a crankshaft; 4. an exhaust silencing chamber; 51. an air intake duct; 52. an exhaust pipe; 53. and (4) a process tube.

Detailed Description

Referring to fig. 1 to 4 in combination, according to an embodiment of the present invention, a suction muffler 2 is provided, which includes a housing 1, an air inlet 11 and an air outlet 12 are configured on the housing 1, a partition plate 13 is disposed in an inner cavity of the housing 1, the partition plate 13 divides the inner cavity into an upper cavity 14 corresponding to the air outlet 12 and a lower cavity 15 corresponding to the air inlet 11, a plurality of through holes 16 penetrating through the upper cavity 14 and the lower cavity 15 are configured on the partition plate 13, and a plurality of oil-gas separation covers 17 are further included, the plurality of oil-gas separation covers 17 are respectively covered on the plurality of through holes 16 in a one-to-one correspondence manner and are located on one side of the partition plate 13 facing the upper cavity 14, and the oil-gas separation covers 17 have through holes (not shown in the figure) to penetrate through the upper cavity 14 and the lower cavity 15. In the technical scheme, the plurality of through holes 16 on the partition plate 13 and the oil-gas separation cover 17 covering the through holes 16 form a noise reduction structure for the intake air flow of the air suction muffler 2 (the oil-gas separation cover 17 and the partition plate 13 form a noise reduction cavity), and can also separate the mist lubricating oil mixed in the intake air flow, thereby the air suction muffler can effectively reduce the air suction noise of the compressor and can also effectively reduce the oil content brought by the air suction of the compressor cylinder, further, the invention simplifies the noise reduction and oil-gas separation structure in a functional composite structure, simplifies the air inlet flow passage and ensures that the air flow flows more smoothly, this is advantageous in reducing the local pressure loss of the fluid, i.e. in reducing the suction resistance, and in improving the suction efficiency and thus the compressor performance.

The oil-gas separation cover 17 is supported on one side of the partition 13 facing the upper chamber 14, as shown in fig. 1, or the oil-gas separation cover 17 is hung on a wall body of the housing 1 corresponding to the upper chamber 14.

Preferably, the oil-gas separation housing 17 is supported on the side of the partition 13 facing the upper chamber 14, and in particular, the oil-gas separation hood 17 has a supporting sidewall 171 connected to the partition 13 and an oil separation and collection ceiling wall 172 at an end of the supporting sidewall 171 remote from the partition 13, the oil separating and collecting ceiling wall 172 has a structure that is arched toward the side away from the partition plate 13, and at this time, the oil-gas separation cover 17 forms a noise reduction cavity with an inlet of the through hole 16, meanwhile, the oil-gas separation and collection top wall 172 with the arched structure mainly separates oil from gas of the gas flow entering the noise reduction cavity, and the oil-containing gas flow entering the through holes 16 impacts the oil separation and collection top wall 172, so that the atomized lubricating oil in the gas flow collides and is collected into larger oil drops, and then fall into the lower cavity 15 under the action of self weight, thereby efficiently realizing the purpose of oil-gas separation.

Correspondingly, the through-flow hole is arranged on the supporting side wall 171 and is not arranged on the oil separation and collection top wall 172, on one hand, the top wall with an arched structure is not damaged, the air flow can be guided by a smooth top wall curved surface to impact more smoothly, and further, the oil-gas separation function is ensured to be exerted, and on the other hand, the flowing air flow can be prevented from wrapping the oil drops with the accumulated larger particles and entering the exhaust port 12.

Furthermore, the central region of the oil separation collecting top wall 172 has a cone 173 extending toward one side of the partition 13, the conical top of the cone 173 faces the through hole 16, and the arrangement of the cone 173 forms the oil separation collecting top wall 172 into a double-parabolic shape in a longitudinal section, which is more favorable for the oil in the air flow to be collected and separated and for the oil drops to fall down as soon as possible.

The airflow flowing direction from the lower cavity 15 to the upper cavity 14 is defined as a first direction, the flow area of the through hole 16 is gradually reduced along the first direction, that is, the through hole 16 can essentially throttle and accelerate the inspiratory airflow, and the accelerated airflow can ensure the impact collision force of the airflow, so that the collision is more sufficient, and the oil-gas separation effect is further improved. The cross section of the through hole 16 may be various, and in order to facilitate the processing, the cross section of the through hole 16 may be one of a polygon, a circle, or an ellipse.

The volume of the lower cavity 15 and the volume of the upper cavity 14 are preferably adjustable, and the specific volume adjustment is larger than the volume of the upper cavity 14 according to the volume of the lower cavity 15, so as to ensure that the inhaled air flow is fully buffered and denoised, and the inhalation pressure pulsation is reduced; and/or one side of the partition plate 13 facing the lower cavity 15 is a first side, the total surface area of the first side is Sg, the total area of the orifices of the first side corresponding to the through holes 16 is Sk, and Sk/Sg is not less than 1/4 and not more than 1/2, so that the air intake resistance can be reduced to the maximum extent, and the smoothness of air intake is ensured.

An oil leakage port 18 is further formed in the housing 1, and the oil leakage port 18 is disposed on a wall body of the housing 1 corresponding to the upper cavity 14.

The through holes 16 are uniformly distributed on the partition plate 13, so that air inlet is more uniform, and air inlet noise is reduced; and/or, when the compressor is a small-displacement compressor, the through holes 16 are arranged in the area of the partition plate 13 close to the air inlet 11, so that when the air suction amount per unit time is less, the air suction can conveniently and quickly pass through the partition plate, and the back-and-forth disturbance of the air flow is reduced; and/or, when the compressor is a large-discharge compressor or a high-frequency compressor, the through holes 16 are arranged in the area of the partition plate 13 close to the exhaust port 12, so that the suction volume is large, and the suction is convenient to rapidly pass through the exhaust port.

According to an embodiment of the present invention, a compressor, especially a piston compressor, is further provided, including the above-mentioned suction muffler 2 and a compressor housing, the compressor housing is provided with a suction pipe 51, an exhaust pipe 52 and a process pipe 53, the compressor housing is provided with an air cylinder and a crankshaft 3 for driving the air cylinder to generate a compression effect, an air inlet of the air cylinder is connected to the suction muffler 2 in a penetrating manner, an air outlet of the air cylinder is connected to the exhaust pipe 52 in a penetrating manner through an exhaust silencing chamber 4, an air inlet 11 of the suction muffler 2 is not directly connected to the suction pipe 51 but is located in an inner cavity of the compressor housing, a refrigerant air flow in a refrigeration system firstly enters the inner cavity of the compressor housing through the suction pipe 51 and then enters the air inlet 11, i.e. a semi-direct suction structure is formed, and this structure can adopt a low-temperature and low-pressure air flow entering the inner cavity of the compressor housing to perform a semi-direct suction on the air cylinder The cooling, of course, in practical applications, due to the high frequency rotation of the crankshaft 3, will cause the lubricant in the compressor cavity to be thrown up and form an oil mist state, while the provision of the suction muffler 2 is necessary, i.e. the suction muffler 2 in this application is particularly suitable for compressors of the suction semi-direct suction structure. The compressor housing further has a process pipe 53, and the suction pipe 51, the exhaust pipe 52 and the process pipe 53 are all connected to the refrigeration system, wherein the process pipe 53 is designed to facilitate filling of a refrigerant.

According to an embodiment of the invention, a refrigerator is also provided, which comprises the compressor.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Suction muffler, characterized in that it comprises a housing (1), said housing (1) being configured with an air inlet (11) and an air outlet (12), a clapboard (13) is arranged in the inner cavity of the shell (1), the clapboard (13) divides the inner cavity into an upper cavity (14) corresponding to the exhaust port (12) and a lower cavity (15) corresponding to the air inlet (11), the partition plate (13) is provided with a plurality of through holes (16) penetrating through the upper cavity (14) and the lower cavity (15), and further comprises a plurality of oil-gas separation covers (17), the oil-gas separation covers (17) are respectively covered on the through holes (16) in a one-to-one correspondence manner and are positioned on one side of the partition plate (13) facing the upper cavity (14), the oil-gas separation cover (17) is provided with a through hole so as to penetrate through the upper cavity (14) and the lower cavity (15).

2. The suction muffler, as set forth in claim 1, characterized in that the vapor-liquid separation hood (17) is supported on the side of the partition (13) facing the upper chamber (14) or in that the vapor-liquid separation hood (17) is suspended from the wall of the housing (1) corresponding to the upper chamber (14).

3. The suction muffler as claimed in claim 2, wherein the oil-gas separation cover (17) has a support sidewall (171) connected to the partition (13) and an oil separation and collection ceiling wall (172) at an end of the support sidewall (171) remote from the partition (13), the oil separation and collection ceiling wall (172) having a structure that is arched toward a side remote from the partition (13).

4. The suction muffler, as set forth in claim 3, characterized in that the through-flow holes are provided on the support side wall (171).

5. The suction muffler, as set forth in claim 3, characterized in that the central region of the oil separating collecting ceiling wall (172) has a cone (173) extending toward the partition (13) side, the cone (173) having its apex facing the through-hole (16).

6. The suction muffler, as set forth in claim 1, characterized in that the direction of flow of the gas flow from the lower chamber (15) towards the upper chamber (14) is a first direction, along which the flow area of the through-hole (16) tapers.

7. The suction muffler, as set forth in claim 6, characterized in that the cross-section of the through-hole (16) is one of polygonal, circular or oval.

8. The suction muffler, as set forth in claim 1, characterized in that the volume of the lower chamber (15) is greater than the volume of the upper chamber (14); and/or one side of the partition plate (13) facing the lower cavity (15) is a first side, the total surface area of the first side is Sg, the total area of the orifices of the first side corresponding to the through holes (16) is Sk, and the total area of the orifices is not less than 1/4 but not more than Sk/Sg but not more than 1/2.

9. The suction muffler, as set forth in claim 1, characterized in that the housing (1) is further constructed with an oil leak (18), the oil leak (18) being disposed on a wall of the housing (1) corresponding to the upper chamber (14).

10. The suction muffler, as set forth in claim 1, characterized in that a plurality of said through holes (16) are uniformly distributed on said partition (13); and/or, when the compressor is a small-displacement compressor, a plurality of through holes (16) are arranged in the area of the partition plate (13) close to the air inlet (11); and/or, when the compressor is a large-discharge compressor or a high-frequency compressor, the through holes (16) are arranged in the area of the partition plate (13) close to the exhaust port (12).

11. Compressor comprising a suction muffler (2), characterized in that said suction muffler (2) is a suction muffler according to any one of claims 1 to 10.

12. A refrigerator comprising a compressor, characterized in that the compressor is the compressor of claim 11.