CN213016804U

CN213016804U - Exhaust silencing structure, scroll compressor and refrigeration equipment

Info

Publication number: CN213016804U
Application number: CN202022010825.5U
Authority: CN
Inventors: 徐嘉; 李雪峰; 单彩侠; 刘双来; 李海港
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-04-20
Anticipated expiration: 2030-09-14

Abstract

The utility model relates to the technical field of compressors, in particular to an exhaust silencing structure, a scroll compressor and refrigeration equipment; this exhaust amortization structure includes: the shell is pressed on the outer wall surface of the fixed scroll, and an air outlet is formed in one side of the edge close to the exhaust pipe; the plurality of protruding structures are arranged on the wall surface of the shell close to one side of the fixed scroll exhaust port; a plurality of exhaust separation passages are formed between the air outlet and the plurality of convex structures, and are communicated with the air outlet; when the refrigerant mixed with oil mist enters the plurality of exhaust separation passages through the exhaust port, the refrigerant collides with the plurality of convex structures and forms a swirling vortex at the rear part of the convex structures, so that the oil content of the refrigerant discharged out of the closed container is effectively reduced, and the problems of piping pressure loss, reduction of heat exchange rate of a condenser and an evaporator and the like are solved.

Description

Exhaust silencing structure, scroll compressor and refrigeration equipment

Technical Field

The utility model relates to a compressor technical field, concretely relates to exhaust amortization structure, scroll compressor and refrigeration plant.

Background

A scroll compressor is provided with: a compression mechanism unit including a fixed scroll, a movable scroll, and the like; a motor unit for driving the compression mechanism unit; and a crankshaft for transmitting the rotational force of the motor portion to the compression mechanism portion.

The scroll compressor is provided with an oil supply mechanism for supplying oil from the bottom of the closed container to a bearing portion for rotatably supporting the crankshaft, a sliding portion of the compression mechanism portion, and a compression chamber through a through hole provided in the crankshaft, thereby supplying oil to the bearing portion and the sliding portion of the compression mechanism portion, ensuring smooth operation of the bearing portion and the sliding portion, and cooling these components. Further, oil is supplied to the compression chamber to form an oil film in the compression chamber, thereby reducing leakage of the refrigerant during compression.

However, oil supplied to the bearing portion, the sliding portion, and the compression chamber is atomized and mixed into the refrigerant, and the refrigerant oil discharged to the outside of the compressor has a high content, which eventually causes a problem of a piping pressure loss in the refrigeration cycle, a decrease in heat exchange rate in a heat exchanger of a condenser and a heat exchanger of an evaporator in the refrigeration cycle, and the like.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide an exhaust amortization structure, scroll compressor and refrigeration plant to solve the high problem of the outside refrigerant oil content of discharge compressor among the prior art.

Technical scheme (I)

In order to achieve the above object, the present invention provides in a first aspect an exhaust silencing structure, including:

the shell is pressed on the outer wall surface of the fixed scroll, and an air outlet is formed in one side of the edge close to the exhaust pipe;

the plurality of protruding structures are arranged on the wall surface of the shell close to one side of the fixed scroll exhaust port;

a plurality of exhaust separation passages are formed between the air outlet and the plurality of protruding structures, and the plurality of exhaust separation passages are communicated with the air outlet.

Optionally, the protruding structure is provided as a cylindrical structure.

Optionally, the protruding structures are sheet-shaped baffles, and a plurality of the sheet-shaped baffles are arranged at intervals.

Optionally, two adjacent rows the sheet baffles are staggered, the exhaust port and two adjacent rows form a labyrinth passage between the sheet baffles.

Optionally, the protruding structure is the buckled plate, a plurality of the buckled plate is parallel to each other.

To achieve the above object, a second aspect of the present invention provides a scroll compressor, comprising:

the upper wall surface of the sealed container is communicated with an air suction pipe, and the side wall surface of the sealed container is communicated with an exhaust pipe;

the fixed scroll is arranged in the sealed container through a bracket;

the movable scroll plate is meshed with the fixed scroll plate and eccentrically rotates with the fixed scroll plate through a driving mechanism to form a compression cavity;

and the exhaust silencing structure of any one of the preceding claims, which is press-fitted on an outer wall surface of the fixed scroll.

Optionally, a through hole is formed in the fixed scroll, and the air suction pipe extends into the compression cavity through the through hole.

Optionally, a groove is formed in a wall surface of the fixed scroll matched with the exhaust silencing structure, the exhaust port is installed in the groove, and an axial oil passage penetrates through the edge of the groove in the direction of the movable scroll.

Optionally, a high-pressure oil groove is formed in a wall surface of the fixed scroll matched with the movable scroll, and one end of the axial oil channel is installed in the high-pressure oil groove.

In order to achieve the above object, a third aspect of the present invention provides a refrigeration apparatus, comprising: a scroll compressor as claimed in any one of the preceding claims.

(II) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

the utility model provides an exhaust amortization structure, scroll compressor and refrigeration plant, the refrigerant of sneaking into the oil mist during use at first can get into in a plurality of exhaust separation route via the gas vent, above-mentioned design can cushion the impact that the refrigerant avoids sealed container on the one hand, avoid appearing violent vibration and strong noise, on the other hand refrigerant collides with a plurality of protruding structure, and form the vortex that circles round at protruding structure rear portion, at this moment, the oil mist of mixing in the refrigerant is separated under pressure reduction and viscidity effect and subsides, thereby realize the separation of oil mist and refrigerant, the oil mist of being separated out flows back to and continues the use in the compression intracavity, and the refrigerant will flow into sealed container via the gas outlet in, flow out via the blast pipe after cooling actuating mechanism, finally effectively reduce the oil content of the outside refrigerant of sealed container of discharge, improve piping loss of pressure or condenser, The heat exchange rate of the evaporator is reduced, and the like.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained without inventive exercise, wherein:

FIG. 1 is a schematic structural diagram of an embodiment of a middle exhaust silencing structure of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the exhaust silencing structure of the present invention;

FIG. 3 is a schematic structural diagram of another embodiment of the exhaust silencing structure of the present invention;

FIG. 4 is a schematic view of the fixed scroll of the present invention at one of its angles;

FIG. 5 is a partial enlarged view of the portion A in FIG. 4;

FIG. 6 is a schematic view of the fixed scroll of the present invention at another angle;

FIG. 7 is a partial enlarged view of the position B in FIG. 6;

FIG. 8 is a schematic view of a scroll compressor according to the present invention;

FIG. 9 is a partial enlarged view of the portion A in FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 8 at position B;

fig. 11 is a partial enlarged view of the position C in fig. 8.

In the figure: 1. a housing; 2. a fixed scroll; 3. an air outlet; 4. a raised structure; 5. an air intake duct; 6. an exhaust pipe; 7. a support; 8. a movable scroll; 9. a drive mechanism; 10. a through hole; 11. a groove; 12. an axial oil passage; 13. a high pressure oil sump; 14. an upper cover; 15. a housing; 16. a lower cover; 17. a medium pressure oil passage; 18. a bearing seat; 19. a crankshaft; 20. an axial oil hole; 21. a first radial oil hole; 22. a second radial oil hole; 23. a secondary bearing; 24. an oil pump; 25. a thrust member; 26. a main bearing; 27. a cross slip ring; 28. an exhaust port; 29. an oil reservoir; 30. an exhaust silencing structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be described in further detail with reference to the following drawings and embodiments:

the hermetic motor-driven compressor according to embodiment 1 is used for a refrigeration apparatus. Here, the "refrigeration equipment" includes not only an apparatus that performs cooling by a refrigeration cycle (for example, a refrigerator, a refrigerated showcase, an air conditioner that performs a cooling operation, and the like) but also an apparatus that performs heating by a heat pump cycle (for example, a heat pump water heater, an air conditioner that performs a heating operation, and the like). The refrigeration apparatus has a hermetic motor-driven compressor, a decompression unit, a condenser, and an evaporator.

As shown in fig. 1 to 3, a first aspect of the present application provides an exhaust silencing structure 30, including:

the shell 1 is pressed on the outer wall surface of the fixed scroll 2, and an air outlet 3 is formed in one side of the edge close to the exhaust pipe 6; preferably, the shape of the casing 1 is adapted to the shape of the fixed scroll 2, so that the oil mist refrigerant mixed flowing out through the exhaust port 28 of the fixed scroll 2 is ensured to enter the casing 1 and separated, and the overflow is avoided.

The plurality of protruding structures 4 are arranged on the wall surface of the shell 1 close to one side of the exhaust port 28 of the fixed scroll 2, and specifically, the plurality of protruding structures 4 are uniformly distributed on the wall surface of the shell 1 close to one side of the exhaust port 28 of the fixed scroll 2;

a plurality of exhaust separation passages are formed between the air outlet 3 and the plurality of convex structures 4, and are communicated with the air outlet 3;

as shown in fig. 8, solid arrows indicate the flow direction of oil mist, and hollow arrows indicate the flow direction of refrigerant; the refrigerant mixed into the oil mist in use first enters the plurality of exhaust separation passages through the exhaust port 28, the design can buffer the impact of the refrigerant on the sealed container to avoid violent vibration and strong noise, and the refrigerant collides with the plurality of convex structures 4, and forms a swirling vortex at the rear of the projection 4, at which time the oil mist mixed in the refrigerant is separated and settled under the action of pressure reduction and viscosity, thereby realizing the separation of the oil mist and the refrigerant, the separated oil mist flows back to the compression cavity for continuous use, the refrigerant flows into the sealed container through the air outlet 3, the refrigerant flows out through the exhaust pipe 6 after cooling the drive mechanism 9, and finally the oil content of the refrigerant discharged outside the closed container is effectively reduced, and the problems of piping pressure loss, reduction in heat exchange rate of a condenser and an evaporator, and the like are solved.

According to the utility model discloses an embodiment, as shown in FIG. 1, protruding structure 4 sets up to the cylindricality structure, the refrigerant that mixes the oil mist gets into a plurality of exhaust separation route, at this moment, the refrigerant collides with a plurality of cylindricality structure mutually, and form the vortex that circles round at the cylindricality structure rear portion, at this moment, the oil mist that mixes in the refrigerant is separated under pressure reduction and viscous action and subsides, thereby realize the separation of oil mist and refrigerant, the oil mist that is separated out flows back to and continues the use in the compression chamber, and the refrigerant will flow into sealed container via gas outlet 3 in, flow out via blast pipe 6 after cooling actuating mechanism 9.

According to another embodiment of the present invention, as shown in fig. 2, the protrusion structures 4 are sheet-shaped baffles, and a plurality of sheet-shaped baffles are arranged at intervals; preferably, two adjacent rows of the sheet-like baffles are staggered, and a labyrinth passage is formed between the exhaust port 28 and the two adjacent rows of the sheet-like baffles; the labyrinth passage design can effectively increase the collision length between the refrigerant mixed with the oil mist and the baffle plate, and more effectively separate the oil mist mixed with the refrigerant.

According to an embodiment of the present invention, as shown in fig. 3, the protrusion structures 4 are corrugated plates, and a plurality of the corrugated plates are parallel to each other; the design is that the refrigerant mixed with oil mist flowing out from the exhaust port 28 of the fixed scroll 2 is forcibly divided into a plurality of exhaust separation passages when entering the shell 1, thereby ensuring that the flow of the refrigerant is more stable, being beneficial to the sedimentation of the oil mist and realizing better separation.

To achieve the above object, as shown in fig. 8 to 11, a second aspect of the present invention provides a scroll compressor, comprising:

the upper wall surface of the sealed container is communicated with an air suction pipe 5, and the side wall surface of the sealed container is communicated with an air exhaust pipe 6;

specifically, the casing 15, and the upper cover 14 and the lower cover 16 welded to both ends of the casing 15 constitute a sealed container;

a fixed scroll 2 mounted in the sealed container through a bracket 7;

specifically, the bracket 7 is connected with the casing 15, and the fixed scroll 2 is mounted on the bracket 7;

the movable scroll 8 is meshed with the fixed scroll 2 and eccentrically rotates with the fixed scroll 2 through a driving mechanism 9 to form a compression cavity, wherein the compression cavity is a crescent closed volume cavity formed by the meshing of the movable scroll 8 and the fixed scroll 2; a through hole 10 is formed in the fixed scroll 2, and the air suction pipe 5 extends into the compression cavity through the through hole 10; specifically, the movable scroll 8 is also placed on the support 7, and a cross slip ring 27 is further arranged between the movable scroll and the support 7 and used for limiting the rotation of the movable scroll 8;

specifically, the movable scroll 8 and the fixed scroll 2 are oppositely arranged with a relative angle difference of 180 degrees; the driving mechanism 9 is connected with the movable scroll 8 through a crankshaft 19, specifically, the upper end of the crankshaft 19 is an eccentric part which is bulged from the axial direction to one direction, the movable scroll 8 is mounted on the eccentric part through a bearing seat 18, the crankshaft 19 rotates under the action of the driving mechanism 9, so that the movable scroll 8 is driven to eccentrically rotate around the fixed scroll 2 under the limiting action of the cross-shaped sliding ring 27, the compression cavity is correspondingly enlarged or reduced in the rotating process, the refrigerant entering the compression cavity is compressed, and finally, the high-temperature and high-pressure gaseous refrigerant is formed and discharged through the exhaust pipe 6, and the refrigeration cycle is completed;

the other end of the crankshaft 19 is connected with an oil pump 24 and extends into an oil storage tank 29 arranged at the bottom of the closed container, wherein the two ends of the crankshaft 19 are also provided with a main bearing 26 and an auxiliary bearing 23 for supporting the crankshaft 19 and are axially limited by a thrust piece 25.

And an exhaust silencing structure 30 as in any one of the above, the exhaust silencing structure 30 being press-fitted on the outer wall surface of the fixed scroll 2.

According to the utility model discloses an embodiment, scroll compressor still includes: fuel feeding mechanism, fuel feeding mechanism specifically includes: an axial oil hole 20 opened in the crankshaft 19, and a first radial oil hole 21 and a second radial oil hole 22 respectively communicating with the main bearing 26 and the auxiliary bearing 23, and both the first radial oil hole 21 and the second radial oil hole 22 communicating with the axial oil hole 20; as shown in fig. 8, solid arrows indicate the flow direction of oil mist, and hollow arrows indicate the flow direction of refrigerant; when in use, the lubricating oil stored in the oil storage tank 29 rises along the axial oil hole 20 under the driving of the oil pump 24 and enters the bearing seat 18 of the movable scroll 8, in the process, a small amount of lubricating oil is respectively supplied to the main bearing 26 and the auxiliary bearing 23 which support the crankshaft 19 through the first radial oil hole 21 and the second radial oil hole 22 which are communicated with the axial oil hole 20, an oil film is formed between the crankshaft 19 and the main bearing 26 and the auxiliary bearing 23, and a rotary friction pair is lubricated and cooled; at this time, most of the lubricating oil accumulated in the bearing seat 18 returns to the oil storage pool 29 at the bottom of the closed container through an oil return channel arranged on the side wall of the bracket 7, and a small part of the lubricating oil enters the compression cavity in the periodic operation process of the movable scroll 8, so that an oil film is formed at the meshing position of the end surface and the side wall of the rolling teeth of the compression cavity, the meshing lubricity between the side walls of the rolling teeth is enhanced, and the leakage of refrigerant among the compression cavities in the compression process is reduced.

According to the utility model discloses an embodiment, as shown in FIG. 6, still seted up medium pressure oil passageway 17 on the wall that moves vortex dish 8 and quiet vortex dish 2 matched with, store in partial lubricating oil in the bearing frame will get into the compression intracavity at the periodic operation in-process that moves vortex dish 8 via medium pressure oil passageway 17, form the oil film at the book tooth terminal surface and the lateral wall meshing department in the compression chamber, strengthen the lubricity of meshing between the book tooth lateral wall to reduce the leakage of compression process refrigerant between each compression chamber.

According to the utility model discloses an embodiment, in order to guarantee that the lubricating oil that is separated all flows back to the compression intracavity, as shown in fig. 4-7, be provided with recess 11 on static scroll 2 and the exhaust amortization structure 30 complex wall, gas vent 28 is installed in recess 11, and the edge of recess 11 has a axial oil passageway 12 to moving the direction through of scroll 8, and is preferred, has seted up high-pressure oil groove 13 on static scroll 2 and the moving scroll 8 matched with wall, and the one end of axial oil passageway 12 is installed in high-pressure oil groove 13.

When in use, refrigerant enters the compression cavity from the air suction pipe 5, the compressed refrigerant and lubricating oil which participates in lubrication and sealing in the compression cavity enter the exhaust silencing structure 30 through the air outlet 28 arranged at the center of the static scroll 2 to be separated from the refrigerant, then the oil mist collides with the plurality of convex structures 4, and forms a swirling vortex at the rear part of the convex structures 4, at the moment, the oil mist mixed in the refrigerant is separated and settled under the action of pressure reduction and viscosity, so that the separation of the oil mist and the refrigerant is realized, the separated oil mist is accumulated in the groove 11 of the static scroll 2 and flows into the high-pressure oil groove 13 arranged at the other side through the axial oil channel 12, and then enters the compression cavity through a tiny gap meshed with the dynamic scroll 8 by the static scroll 2 in the periodic operation process of the dynamic scroll 8 to continuously participate in oil film sealing and lubrication in the compression cavity, thereby realizing the recycling of the lubricating oil; at this time, the refrigerant that has completed the oil-gas separation flows into the closed container through the gas outlet 3 provided in the exhaust silencing structure 30, flows toward the drive mechanism 9 through the oil passage provided in the side wall surface of the closed container, and finally cools the drive mechanism 9, and finally flows out through the exhaust pipe 6 provided in the side wall surface, thereby completing the refrigeration cycle.

The embodiments in the present description are all described in a progressive manner, and some of the embodiments are mainly described as different from other embodiments, and the same and similar parts among the embodiments can be referred to each other.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying importance; the words "bottom" and "top", "inner" and "outer" refer to directions toward and away from, respectively, a particular component geometry.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An exhaust silencing structure, comprising:

the shell (1) is pressed on the outer wall surface of the fixed scroll (2), and an air outlet (3) is formed in one side of the edge close to the exhaust pipe (6);

the protruding structures (4) are arranged on the wall surface of one side, close to the exhaust port (28) of the fixed scroll (2), of the shell (1) and are arranged in a plurality of numbers;

a plurality of exhaust separation passages are formed between the air outlet (3) and the plurality of protruding structures (4), and are communicated with the air outlet (3).

2. Exhaust gas silencing structure according to claim 1, characterized in that said protruding structure (4) is provided as a cylindrical structure.

3. The exhaust silencing structure of claim 1, wherein said protruding structure (4) is provided as a sheet-like baffle, and a plurality of said sheet-like baffles are provided at intervals.

4. The exhaust silencing structure of claim 3, wherein two adjacent rows of said sheet-like baffles are offset from each other, and said exhaust port (28) forms a labyrinth passage with said two adjacent rows of said sheet-like baffles.

5. Exhaust silencing structure according to claim 1, characterized in that said raised structure (4) is a corrugated plate, several of which are parallel to each other.

6. A scroll compressor, comprising:

the upper wall surface of the sealed container is communicated with an air suction pipe (5), and the side wall surface of the sealed container is communicated with an air exhaust pipe (6);

a fixed scroll (2) mounted in the sealed container through a bracket (7);

the movable scroll (8) is meshed with the fixed scroll (2) and eccentrically rotates with the fixed scroll (2) through a driving mechanism (9) to form a compression cavity;

and an exhaust gas silencing structure as defined in any one of claims 1 to 5, which is press-fitted on an outer wall surface of the fixed scroll (2).

7. The scroll compressor of claim 6, wherein the fixed scroll (2) is provided with a through hole (10), and the suction pipe (5) extends into the compression chamber through the through hole (10).

8. The scroll compressor of claim 6, wherein a groove (11) is formed in a wall surface of the fixed scroll (2) which is matched with the exhaust silencing structure, an exhaust port (28) of the fixed scroll (2) is installed in the groove (11), and an axial oil passage (12) penetrates through the edge of the groove (11) in the direction of the movable scroll (8).

9. The scroll compressor of claim 8, wherein a high-pressure oil groove (13) is formed in a wall surface of the fixed scroll (2) which is matched with the movable scroll (8), and one end of the axial oil passage (12) is installed in the high-pressure oil groove (13).

10. A refrigeration apparatus, comprising: a scroll compressor as claimed in any one of claims 6 to 9.