CN114017335A

CN114017335A - Compressor and refrigeration equipment

Info

Publication number: CN114017335A
Application number: CN202111321705.XA
Authority: CN
Inventors: 张贺龙; 李华明; 翟元彬
Original assignee: Guangdong Meizhi Compressor Co Ltd; Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd; Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-02-08

Abstract

The invention discloses a compressor and refrigeration equipment, wherein the compressor comprises a pump body assembly, a first exhaust hole and a second exhaust hole, wherein the pump body assembly comprises a bearing; the silencing device is connected with the bearing and limits a first cavity, the first cavity is communicated with the first exhaust hole, the silencing device comprises a first silencing part, and the first silencing part is provided with a second exhaust hole; the oil-gas separation device is positioned on the outer side of the silencing device and defines a second cavity, the second cavity is communicated with the first cavity through a second exhaust hole, and the oil-gas separation device comprises a first separation part; the diameter in second exhaust hole is D, along the axial in second exhaust hole, and the minimum distance between first separation portion and the first amortization portion is L, satisfies: l is more than or equal to 1/4D. Because oil-gas separation is located silencing device's the outside, and the distance that the interval was set for between first separation portion and the first silencing portion, consequently gaseous can be in the second cavity diffusion, and the oil-gas separation is participated in to the last more positions of oil-gas separation device of being convenient for, promotes the separation effect.

Description

Compressor and refrigeration equipment

Technical Field

The invention relates to the technical field of compressors, in particular to a compressor and refrigeration equipment.

Background

The crankshaft of the rotary compressor needs to rotate relative to the bearing in the working process, in order to reduce the friction loss between the friction pairs, the compressor can supply the refrigerant oil to the position between the crankshaft and the bearing through the internal oil supply pipeline, however, the refrigerant oil can be mixed into a gaseous refrigerant, and the refrigerant oil moving along with the refrigerant can be adsorbed on the surface of a copper pipe of the evaporator to influence the heat exchange of the evaporator. Based on the above problem, the compressor is usually further provided with an oil-gas separation device, which can filter the refrigerant oil in the gaseous refrigerant, but the flow rate of the gaseous refrigerant is high, and the gaseous refrigerant easily passes through only a local area of the oil-gas separation device, so that the separation capacity of the oil-gas separation device is limited.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a compressor which can improve the separation effect of an oil-gas separation device.

The invention also provides a compressor and refrigeration equipment with the compressor.

According to a first aspect of the present invention, a compressor comprises:

the pump body assembly comprises a bearing, and the bearing is provided with a first exhaust hole;

the silencing device is connected to the bearing and limits a first cavity, the first cavity is communicated with the first exhaust hole, the silencing device comprises a first silencing part, and the first silencing part is provided with a second exhaust hole;

the oil-gas separation device is positioned on the outer side of the silencing device and defines a second cavity, the second cavity is communicated with the first cavity through the second exhaust hole, and the oil-gas separation device comprises a first separation part;

wherein, the diameter in second exhaust hole is D, follows the axial in second exhaust hole, first separation portion with minimum distance between the first amortization portion is L, satisfies: l is more than or equal to 1/4D.

The compressor provided by the embodiment of the invention has at least the following beneficial effects:

because oil-gas separation device is located silencing device's the outside, and the distance that the interval was set for between first separation portion and the first silencing portion, consequently, the compressed gas who discharges from first gas vent need just can reach oil-gas separation device through first cavity and second cavity, gaseous velocity of flow slows down, so, gas can spread in the second cavity, gas after the diffusion can fully contact with oil-gas separation device, make oil-gas separation can be participated in to more positions on the oil-gas separation device, the separation effect has been promoted.

According to some embodiments of the invention, a minimum distance L between the first separating portion and the first silencing portion, and a diameter D of the second exhaust hole, satisfy: l is more than or equal to 1/3D.

According to some embodiments of the invention, a minimum distance L between the first separating portion and the first silencing portion, and a diameter D of the second exhaust hole, satisfy: l is less than or equal to 3D.

According to some embodiments of the invention, the minimum distance L between the first separating portion and the first sound deadening portion satisfies: l is more than or equal to 5mm and less than or equal to 20 mm.

According to some embodiments of the invention, the first vent hole is offset from the second vent hole.

According to some embodiments of the invention, the oil and gas separation device further comprises a second separation portion, the first separation portion is connected to the bearing, the second separation portion is connected to the muffler device, and the oil and gas separation device, the muffler device and the bearing together define the second cavity.

According to some embodiments of the invention, the bearing comprises a first connecting portion and a second connecting portion arranged in an axial direction, a minimum diameter of the second connecting portion being larger than a maximum diameter of the first connecting portion;

the silencing device also comprises a second silencing part, the first silencing part is connected to the first connecting part, and the second silencing part is connected to the second connecting part;

the first separating portion is connected to the first connecting portion, and the second separating portion is connected to the first sound-deadening portion.

According to some embodiments of the present invention, the oil-gas separation device further includes a first mounting portion connected to the second separation portion, disposed along a radial direction of the bearing, and attached to the second silencing portion.

According to some embodiments of the present invention, the muffler device further includes a second mounting portion connected to the second muffling portion, disposed along a radial direction of the bearing, and attached to the first connecting portion.

According to some embodiments of the invention, the oil-gas separation device further comprises a second separation portion, the first separation portion and the second separation portion are both connected to the bearing to cover the muffler device, and the oil-gas separation device, the muffler device and the bearing together define the second cavity.

The refrigeration equipment comprises the compressor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a sectional view of a compressor in a first embodiment of the present invention;

FIG. 2 is a schematic diagram of the dimensional relationships shown in FIG. 1;

fig. 3 is a sectional view of a compressor in a second embodiment of the present invention;

fig. 4 is a sectional view of a compressor in a third embodiment of the present invention;

fig. 5 is a sectional view of a compressor in a fourth embodiment of the present invention;

fig. 6 is a sectional view of a compressor in a fifth embodiment of the present invention;

fig. 7 is a sectional view of a compressor in a sixth embodiment of the present invention.

Reference numerals:

a crankshaft 100;

a bearing 200, a first connection portion 210, a second connection portion 220;

the silencer 300, the first cavity 310, the second exhaust hole 320, the plane 321, the first silencing part 330, the second silencing part 340 and the second mounting part 350;

the oil-gas separation device 400, the second cavity 410, the first separation part 420, the second separation part 430 and the first installation part 440.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, etc., is indicated based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does 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.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The compressor among the refrigeration plant is used for realizing the compression of refrigerant, and common rotary compressor includes pump body subassembly, and pump body subassembly includes the bent axle, and the bent axle passes through the bearing to be connected in compressor housing's inside, and in order to realize the stable installation of bent axle, the compressor is provided with two sets of bearings usually, as main bearing and auxiliary bearing respectively, and main bearing and auxiliary bearing support two parts of bent axle respectively along the axial setting of bent axle. The crankshaft can be divided into a main shaft, an eccentric part and an auxiliary shaft along the axial direction, wherein the main shaft is connected with the main bearing, the auxiliary shaft is connected with the auxiliary bearing, the eccentric part is arranged between the main bearing and the auxiliary bearing, the main shaft and the auxiliary shaft are coaxially arranged, the axis of the eccentric part is parallel to the axis of the main shaft, and the eccentric part and the main shaft deviate.

The pump body subassembly is still including being located the piston of piston intracavity, and the piston cup joints in the outside of eccentric part, and can rotate relative eccentric part, and when the bent axle rotated around the axis of main shaft under drive arrangement's drive, the eccentric part can drive the piston and rotate in the piston intracavity, realizes gaseous refrigerant's compression, and gaseous refrigerant after the compression can discharge to the casing of compressor through the first exhaust hole on the main bearing, and the first exhaust hole on the rethread casing is discharged.

As described above, the compressor has a plurality of friction pairs, for example, between the main shaft and the main bearing, between the auxiliary shaft and the auxiliary bearing, between the eccentric portion and the piston, between the piston and the piston cavity, and the like, and in order to reduce the frictional force between the rotating members, an oil passage is further provided inside the compressor to supply the refrigerant oil between the rotating members, and the refrigerant oil can form an oil film to reduce frictional power consumption and contribute to reduction of gas leakage between different pressure chambers. However, when the refrigerant oil (for example, the refrigerant oil between the eccentric portion and the piston and between the piston and the piston cavity) directly contacts the gaseous refrigerant, the refrigerant oil is discharged along with the refrigerant and is adsorbed on the surface of the copper pipe of the evaporator of the refrigeration equipment, thereby affecting the heat exchange of the evaporator. Based on the aforesaid, the compressor still is provided with oil-gas separation device usually, and oil-gas separation device sets up in the exit of first exhaust hole, and gas can pass through oil-gas separation device, and the refrigeration oil that carries then can be blockked by oil-gas separation device to realize oil-gas separation. However, since the flow rate of the compressed gas is too high, only a part of the oil-gas separation device (for example, a part facing the outlet of the first exhaust hole) exerts a filtering effect, and the filtering effect is not good.

In order to solve the above problems, referring to fig. 1, a first embodiment of the present invention discloses a compressor, which includes a pump body assembly, the pump body assembly includes a crankshaft 100 and a bearing 200, and further includes a silencer 300 and an oil-gas separator 400, and compressed gas is discharged from a first exhaust hole on the bearing 200 and then reaches the oil-gas separator 400 through two cavities, so that gas diffusion can be achieved, a contact area between the gas and the oil-gas separator 400 is increased, and a separation efficiency of the oil-gas separator 400 is increased.

The crankshaft 100 may adopt the above-mentioned crankshaft structure, that is, includes a main shaft, an auxiliary shaft and an eccentric portion, the main shaft portion of the crankshaft 100 is mainly shown in the drawing, and the main shaft is arranged in the vertical direction in the drawing, that is, the crankshaft is suitable for a vertical compressor, it can be understood that the main shaft may also be arranged in the horizontal direction, so that the crankshaft is suitable for a horizontal compressor.

The bearing 200 is sleeved outside the crankshaft 100 to realize the installation and rotation of the crankshaft 100, the illustrated bearing 200 may be the above-mentioned main bearing, a piston cavity (not shown) of the compressor is arranged below the main bearing, the bearing 200 is further provided with a first exhaust hole (not shown), one end of the first exhaust hole leads to the piston cavity, and the other end leads to the outside of the cavity, so that the compressed gas in the piston cavity can be exhausted through the first exhaust hole.

The muffler device 300 is coupled to the bearing 200, and reduces noise of the compressed gas discharged from the first discharge hole, and in particular, the muffler device 300 and the bearing 200 define a first cavity 310. The outlet of the first exhaust hole is opened to the first chamber 310, that is, the compressed gas in the piston chamber is discharged into the first chamber 310, and the noise is reduced by the muffler device 300. The silencer 300 is provided with a second exhaust hole 320, and the gas in the first chamber 310 may be exhausted through the second exhaust hole 320. It can be understood that the flow rate of the gas may be decreased to some extent because the gas collides with the inner wall of the silencer 300.

The oil and gas separation device 400 has a plurality of filter holes that allow gas to pass through but block the refrigerant oil, thereby achieving oil and gas separation. The oil-gas separation device 400 is located outside the muffler device 300, where the outside is referred to as the first cavity 310, the side of the muffler device 300 facing the first cavity 310 is the inside, and the side facing away from the first cavity 310 is the outside, that is, the oil-gas separation device 400 is located outside the first cavity 310. The oil-gas separation device 400 defines a second cavity 410, the second cavity 410 is communicated with the first cavity 310 through the second exhaust hole 320, and the gas in the silencing device 300 can be exhausted to the second cavity 410 through the second exhaust hole 320 and then exhausted through the filtering holes of the oil-gas separation device 400.

Based on above-mentioned structure, because oil-gas separation device 400 is located silencing device 300's the outside, consequently the compressed gas who discharges from first gas vent need just can reach oil-gas separation device 400 through first cavity 310 and second cavity 410, gaseous velocity of flow slows down, so, gas can spread in second cavity 410, gas after the diffusion can fully contact with oil-gas separation device 400 for more positions can participate in oil-gas separation on the oil-gas separation device 400, promote the separation effect.

In addition, referring to fig. 2, the silencer 300 specifically includes a first silencing part 330, a second exhaust hole 320 is disposed on the first silencing part 330, the oil-gas separation device 400 includes a first separation part 420, and the first separation part 420 and the first silencing part 330 are sequentially disposed along an axial direction of the second exhaust hole 320. The minimum distance between the first separating portion 420 and the first sound-deadening portion 330 in the axial direction of the second vent hole 320 is denoted as a distance L, and the diameter of the second vent hole 320 is denoted as a diameter D, which satisfy the following relationship: l ≧ 1/4D, that is, a certain distance needs to be ensured between first separating portion 420 and first muffling portion 330 so that the gas has enough time to diffuse and to avoid the gas from directly passing through first separating portion 420. In addition, when the gas flow rate is constant, the larger the diameter of the second exhaust hole 320 is, the more the gas flow rate passes per unit time is, and the more the gas enters the second cavity 410, so that the distance L is positively correlated to the diameter D in the embodiment, and when the diameter D is increased, the distance L also needs to be increased correspondingly.

It should be noted that the distance between the first separating portion 420 and the first sound-deadening portion 330 may be constant along the axial direction of the second air discharge hole 320, and for example, the first separating portion 420 and the first sound-deadening portion 330 are parallel to each other and perpendicular to the axial direction of the bearing 200, and the constant distance is taken as the distance L; the distance between the first separating portion 420 and the first sound-deadening portion 330 may also be varied (for example, a non-zero included angle exists therebetween), and in this case, the minimum distance therebetween is taken as the distance L.

As a modification of the above-described first embodiment, the relationship between the minimum distance L and the diameter D may also satisfy: l is larger than or equal to 1/3D, namely, the distance of the minimum distance L is further increased on the basis of the first embodiment, so that the gas flow needs to flow for a longer distance to reach the oil-gas separation device 400, and the gas diffusion can be further realized.

Further, the relationship between the minimum distance L and the diameter D may also satisfy: l ≦ 3D, that is, the minimum distance L between the first separating portion 420 and the first sound-deadening portion 330 cannot be too large, since a motor (not shown) is connected to the other end (e.g., the upper end of fig. 2) of the crankshaft 100, the installation position of the motor needs to be moved upward with the increase of the minimum distance L, the distance between the motor and the bearing 200 is correspondingly increased, and the longer the distance is, the more easily the motor is disturbed, which is not favorable for normal use. This embodiment is through the upper limit value of restriction minimum distance L, on the basis of guaranteeing gaseous abundant diffusion, can realize the compact installation of motor and pump body subassembly, reduces the disturbance of motor.

Based on the above, the specific range of the minimum distance L may be: l is more than or equal to 5mm and less than or equal to 20mm, the range can meet the oil-gas separation requirement of the compressor under the general condition, and it needs to be noted that when the displacement of the compressor is small, the minimum distance L can be taken towards the lower limit value, and when the displacement of the compressor is large, the minimum distance L can be taken towards the upper limit value.

It should be noted that, when the present application relates to the axial direction of the second gas discharge hole 320, the shape of the second gas discharge hole 320 is not limited to a circular shape, and the axial direction may be understood as a flow direction of the gas discharged from the second gas discharge hole 320.

It should be noted that the silencing device 300 and the oil-gas separation device 400 may both be a revolving structure using the axis of the main shaft as the revolving shaft, the silencing device 300 is disposed along the circumferential direction of the bearing 200, and the oil-gas separation device 400 is disposed along the circumferential direction of the silencing device 300, so that the first cavity 310 and the second cavity 410 are both annular cavities. The silencing device 300 can be provided with a plurality of second exhaust holes 320, the plurality of second exhaust holes 320 are distributed along the circumferential direction of the silencing device 300, the gas flow flowing into the second cavity 410 in unit time can be increased, meanwhile, gas can enter the second cavity 410 from a plurality of positions, the gas is uniformly distributed in the second cavity 410, and the separating capacity of the oil-gas separation device 400 is fully exerted. In addition, the revolving structure also facilitates the fixation of the muffler device 300 and the oil-gas separation device 400.

As a further improvement of the first embodiment, the first exhaust hole and the second exhaust hole 320 may be disposed in a staggered manner, where the staggered manner is: the plane 321 where the inlet of the second exhaust hole 320 is located is selected as a reference plane, and the projection of the outlet of the first exhaust hole on the reference plane does not have an overlapped area with the inlet of the second exhaust hole 320, so that the gas exhausted from the first exhaust hole can be prevented from being directly exhausted through the second exhaust hole 320. The first exhaust holes and the second exhaust holes 320 may be arranged in a staggered manner in the circumferential direction of the bearing 200, or in a staggered manner in the radial direction of the bearing 200.

Referring to fig. 1 and 2, as a specific connection scheme of the components in the first embodiment, the oil-gas separation device 400 includes a first separation part 420 and a second separation part 430, the first separation part 420 is used for realizing connection of the oil-gas separation device 400 and the bearing 200, the second separation part 430 is used for realizing connection of the oil-gas separation device 400 and the silencing device 300, and a second cavity 410 is formed between the oil-gas separation device 400, the silencing device 300 and the bearing 200.

Specifically, the first separated portion 420 and the second separated portion 430 are both rotational bodies, the first separated portion 420 is provided substantially in the radial direction of the bearing 200, and the second separated portion 430 is provided substantially in the axial direction of the bearing 200. The inner ring of the first separating portion 420 is connected to the bearing 200, the outer ring is connected to the upper end of the second separating portion 430, and the lower end of the second separating portion 430 is connected to the muffler device 300, wherein the first separating portion 420 and the bearing 200, and the second separating portion 430 and the muffler device 300 may be fixed by welding, screwing, or the like.

As an improvement of the above specific connection scheme, the bearing 200 includes a first connection portion 210 and a second connection portion 220, and the first connection portion 210 and the second connection portion 220 are axially disposed and both are sleeved on the crankshaft. The minimum diameter of the second connection portion 220 is greater than the maximum diameter of the first connection portion 210, thereby forming a mounting surface between the second connection portion 220 and the first connection portion 210. Specifically, in the figures, the diameter of the second connecting portion 220 is constant, and the first connecting portion 210 includes a plurality of shaft sections, and the diameters of the shaft sections decrease in sequence along the direction away from the second connecting portion 220.

The muffler device 300 includes a first muffling portion 330 and a second muffling portion 340, both of which are connected to the bearing 200. Similar to the oil-gas separation device 400, the first muffling portion 330 and the second muffling portion 340 are both solids of revolution, the first muffling portion 330 is disposed substantially along the radial direction of the bearing 200, the second muffling portion 340 is disposed substantially along the axial direction of the bearing 200, the inner ring of the first muffling portion 330 is connected to the first connecting portion 210, the outer ring is connected to the upper end of the second muffling portion 340, and the lower end of the second muffling portion 340 is connected to the second connecting portion 220, that is, the first cavity 310 is formed among the first muffling portion 330, the second muffling portion 340, the first connecting portion 210, and the second connecting portion 220.

Based on the above-mentioned specific structure of the muffler device 300 and the bearing 200, the inner ring of the first separating portion 420 is connected to the first connecting portion 210, and the lower end of the second separating portion 430 is connected to the first muffling portion 330 of the muffler device 300, that is, the second cavity 410 is formed between the first separating portion 420, the second separating portion 430, the first muffling portion 330 and the second connecting portion 220.

In this embodiment, the second connecting portion 220 supports the muffler device 300, the muffler device 300 supports the oil-gas separation device 400, and the second connecting portion 220, the muffler device 300, and the oil-gas separation device 400 are sequentially distributed along the axial direction of the bearing 200, so that the axial space can be fully utilized.

The second separated portion 430 or the first mounting portion 440 may be connected to the second mounting portion 350, as shown in fig. 6.

Referring to fig. 3, as a further improvement of the above-mentioned specific connection scheme, the oil-gas separation device 400 further includes a first mounting portion 440, the first mounting portion 440 is disposed substantially along the radial direction of the bearing 200, the inner ring of the first mounting portion 440 is connected to the lower end of the second mounting portion 430, and the first mounting portion 440 can be attached to the first silencing portion 330, so that the contact area of the connection portion between the oil-gas separation device 400 and the silencing device 300 is increased, and the connection strength is ensured. The first mounting portion 440 and the second muffling portion 340 may be fixed by welding, screwing, or the like.

Referring to fig. 4, as a further improvement of the above-mentioned specific connection scheme, the silencer device 300 further includes a second mounting portion 350, the second mounting portion 350 is disposed substantially along the radial direction of the bearing 200, the inner ring of the second mounting portion 350 is connected to the lower end of the second silencing portion 340, and the second mounting portion 350 can be attached to the second connecting portion 220, so that the contact area of the connecting portion between the silencer device 300 and the bearing 200 is increased, and the connection strength is ensured. The second mounting portion 350 and the second connecting portion 220 may be fixed by welding, screwing, or the like.

The first mounting portion 440 and the second mounting portion 350 may be used in combination, as shown in fig. 5 and 6.

Referring to fig. 7, as another specific connection scheme of the components in the first embodiment, the oil-gas separation device 400 also includes a first separation portion 420 and a second separation portion 430, and both the first separation portion 420 and the second separation portion 430 are directly connected to the bearing 200 in this embodiment, so as to cover the muffler device 300 inside. Specifically, the bearing 200 includes a first connecting portion 210 and a second connecting portion 220, the muffler device 300 includes a first muffling portion 330 and a second muffling portion 340, the structures of the bearing 200 and the muffler device 300 may be the same as described above, the inner ring of the first separating portion 420 is connected to the first connecting portion 210, and the second separating portion 430 or the first mounting portion 440 is connected to the second connecting portion 220, that is, the second cavity 410 is formed between the first separating portion 420, the second separating portion 430, the first muffling portion 330, the second muffling portion 340, the first connecting portion 210, and the second connecting portion 220.

The embodiment of the invention also discloses refrigeration equipment which comprises the compressor of each embodiment.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A compressor, characterized by comprising:

2. The compressor of claim 1, wherein a minimum distance L between the first separating portion and the first silencing portion, and a diameter D of the second exhaust hole satisfy: l is more than or equal to 1/3D.

3. The compressor of claim 1, wherein a minimum distance L between the first separating portion and the first silencing portion, and a diameter D of the second exhaust hole satisfy: l is less than or equal to 3D.

4. The compressor of claim 1, wherein a minimum distance L between the first separating portion and the first sound attenuating portion satisfies: l is more than or equal to 5mm and less than or equal to 20 mm.

5. The compressor of claim 1, wherein the first discharge hole is offset from the second discharge hole.

6. The compressor of claim 1, wherein the oil-gas separation device further comprises a second separation portion, the first separation portion is connected to the bearing, the second separation portion is connected to the muffler device, and the oil-gas separation device, the muffler device and the bearing together define the second cavity.

7. The compressor of claim 6, wherein the bearing includes first and second axially disposed connecting portions, a minimum diameter of the second connecting portion being greater than a maximum diameter of the first connecting portion;

8. The compressor of claim 7, wherein the oil-gas separation device further comprises a first mounting portion connected to the second separation portion, disposed along a radial direction of the bearing, and attached to the first silencing portion.

9. The compressor of claim 7, wherein the muffler further comprises a second mounting portion connected to the second muffling portion, disposed along a radial direction of the bearing, and attached to the second connecting portion.

10. The compressor of claim 1, wherein the oil-gas separation device further comprises a second separation portion, the first separation portion and the second separation portion are both connected to the bearing to cover the muffler device, and the oil-gas separation device, the muffler device and the bearing together define the second cavity.

11. Refrigeration device, characterized in that it comprises a compressor according to any one of claims 1 to 10.