CN214499420U

CN214499420U - Compressor and refrigeration equipment

Info

Publication number: CN214499420U
Application number: CN202120026701.8U
Authority: CN
Inventors: 林淑敏; 张洋洋
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-10-26
Anticipated expiration: 2031-01-04

Abstract

The utility model discloses a compressor and refrigeration plant, wherein, the compressor includes cylinder, upper bearing, muffler and oil separating pipe, the cylinder has separating chamber extending along the up-and-down direction; the upper bearing is arranged at the upper end of the cylinder and provided with an exhaust port, an air inlet and a communication port, and the air inlet is positioned above the separation cavity and communicated with the separation cavity; the silencer is arranged on the upper bearing, a sealed cavity is formed between the silencer and the upper bearing, the exhaust port and the communication port are both positioned in the sealed cavity, the air inlet is positioned outside the sealed cavity, and the communication port is communicated with the sealed cavity and the air inlet; the oil separation pipe is mounted on the air inlet, an air inlet passage communicated with the separation cavity is formed between the oil separation pipe and the air inlet, and the oil separation pipe is provided with an exhaust passage communicated with the separation cavity. The utility model discloses a compressor can improve the oil separating effect effectively.

Description

Compressor and refrigeration equipment

Technical Field

The utility model relates to a refrigeration plant technical field, in particular to compressor and refrigeration plant.

Background

In the correlation technique, the refrigerant of the rotary compressor is compressed and then discharged into the silencer for preliminary silencing, then discharged into the shell of the rotary compressor and rotationally stirred by the motor rotor to realize oil-gas separation under the action of centrifugal force, and then flows into a larger buffer space, so that the flowing speed of the airflow is reduced, and the settlement of the oil mist in the refrigerant is realized. However, this oil-gas separation method has a poor oil separation effect on the high-pressure high-density refrigerant.

The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a compressor aims at solving the relatively poor technical problem of compressor's branch oil effect among the prior art.

To achieve the above object, the present invention provides a compressor, including:

the cylinder is provided with a separation cavity extending along the vertical direction;

the upper bearing is arranged at the upper end of the cylinder and provided with an exhaust port, an air inlet and a communication port, and the air inlet is positioned above the separation cavity and communicated with the separation cavity;

the silencer is arranged on the upper bearing, a sealed cavity is formed between the silencer and the upper bearing, the exhaust port and the communication port are both positioned in the sealed cavity, the air inlet is positioned outside the sealed cavity, and the communication port is communicated with the sealed cavity and the air inlet; and

and the oil separation pipe is arranged at the air inlet, an air inlet passage communicated with the separation cavity is formed between the oil separation pipe and the air inlet, and the oil separation pipe is provided with an exhaust passage communicated with the separation cavity.

In one embodiment, the communication port and the air inlet are arranged along a radial direction of the upper bearing, and the communication port extends along the radial direction of the upper bearing to communicate with the air inlet.

In one embodiment, the cross section of the communication port is elongated, the cross section of the air inlet is circular, and one inner side wall of the communication port is tangent to the inner wall surface of the air inlet.

In one embodiment, the communication opening has a length L, a width W, and a diameter D, wherein W < D < L.

In one embodiment, the communication port has a length L, the communication port has a width W, the intake port has a diameter D, the upper bearing has an outer diameter Dmb, and the cylinder has an inner diameter Dcy, wherein 0 < L < (Dmb-Dcy-D-W)/2.

In one embodiment, the number of the communication ports is at least one, and the total area of at least one of the communication ports is greater than or equal to the total area of the exhaust ports.

In an embodiment, the oil separation pipe includes a first pipe section, the air inlet passage is formed between an outer peripheral wall of the first pipe section and an inner wall surface of the air inlet, and the first pipe section is arranged in a tapered manner from top to bottom.

In one embodiment, the oil separation pipe includes a second pipe section connected to the first pipe section, the second pipe section being located above the first pipe section, and the length of the first pipe section being greater than the sum of the height of the cylinder and the height of the upper bearing.

In one embodiment, the outer peripheral wall of the second tube section is provided with an abutting boss abutting against the upper end surface of the air inlet.

In one embodiment, the oil separation pipe is integrally formed with or detachably connected to the upper bearing.

In one embodiment, the oil separation pipe is a tapered pipe or a straight pipe.

In one embodiment, the number of the oil separation pipes is multiple, and the oil separation pipes are arranged at intervals along the circumferential direction of the upper bearing. In an embodiment, the compressor further includes a lower bearing, the lower bearing is disposed at a lower end of the cylinder, a through groove is disposed on the cylinder, and the through groove and the lower bearing enclose the separation cavity.

In one embodiment, the lower bearing is provided with an oil outlet hole, and the oil outlet hole is communicated with the separation cavity.

In one embodiment, the bottom of the separation chamber is provided with an oil groove.

The utility model discloses still provide a refrigeration plant, including the compressor, the compressor includes:

The compressor of the utility model comprises a cylinder, an upper bearing, a silencer and an oil separation pipe, wherein the cylinder is provided with a separation cavity extending along the up-down direction; the upper bearing is arranged at the upper end of the cylinder and provided with an exhaust port, an air inlet and a communication port, and the air inlet is positioned above the separation cavity and communicated with the separation cavity; the silencer is arranged on the upper bearing, a sealed cavity is formed between the silencer and the upper bearing, the exhaust port and the communication port are both positioned in the sealed cavity, the air inlet is positioned outside the sealed cavity, and the communication port is communicated with the sealed cavity and the air inlet; the oil separation pipe is arranged at the air inlet, an air inlet passage communicated with the separation cavity is formed between the oil separation pipe and the air inlet, and the oil separation pipe is provided with an exhaust passage communicated with the separation cavity; so, the refrigerant can carry certain oil to discharge to sealed intracavity from the exhaust port after accomplishing the compression in the cylinder, then flow into the air inlet through the intercommunication mouth, and further flow into the separation intracavity through admission passage, when the air current contacts with the oil separating pipe, because the density of oil and refrigerant gas is different, thereby realized the separation of oil and refrigerant gas, the gas after the separation flows into in the exhaust passage from the entry of exhaust passage, and discharge from exhaust passage's export, and the oil after the separation can flow under the effect of self gravity, finally the gathering is in the bottom of separation chamber. Therefore, the utility model discloses a compressor can improve the oil separating effect effectively, and simultaneously, the simple structure of this compressor, compactness are favorable to realizing the miniaturization of compressor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic partial structural view of an embodiment of a compressor according to the present invention;

FIG. 2 is a front view of the compressor of FIG. 1;

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

FIG. 4 is a view of FIG. 3 with the muffler removed;

FIG. 5 is a schematic cross-sectional view of the communication port and the intake port of FIG. 4;

FIG. 6 is a cross-sectional view of the compressor of FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is an exploded view of the compressor of FIG. 1;

FIG. 9 is a schematic structural view of an embodiment of the oil separator tube of FIG. 8.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						100	Compressor	131	Sealed cavity	152b	An outlet
110	Cylinder	140	Lower bearing	153	First pipe section
						111	Separation chamber	141	Oil outlet	154	Second pipe section
120	Upper bearing	142	Oil groove	155	Abutting lug boss
						121	Exhaust port	150	Oil separation pipe	160	Piston
122	Air inlet	151	Air inlet channel	170	Crankshaft
						123	Communication port	152	Exhaust passage
130	Silencer with improved structure	152a	Inlet port

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be noted that if the embodiments of the present invention are described with reference to "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The utility model provides a compressor. The compressor is particularly, but not exclusively, a rotary compressor. Specifically, the compressor may be a single-cylinder single-row compressor, a single-cylinder double-row compressor, a double-cylinder compressor, or the like.

Referring to fig. 1 to 9, the present invention provides a compressor 100, wherein the compressor 100 includes a cylinder 110, an upper bearing 120, a muffler 130 and an oil separation pipe 150. The cylinder 110 is provided with a separation cavity 111 extending along the up-down direction; the upper bearing 120 is disposed at an upper end of the cylinder 110, the upper bearing 120 is provided with an exhaust port 121, an intake port 122, and a communication port 123, and the intake port 122 is located above the separation chamber 111 and is communicated with the separation chamber 111. The muffler 130 is disposed on the upper bearing 120, a sealed cavity 131 is formed between the muffler 130 and the upper bearing 120, the exhaust port 121 and the communication port 123 are both located in the sealed cavity 131, the intake port 122 is located outside the sealed cavity 131, and the communication port 123 communicates the sealed cavity 131 and the intake port 122. The oil separation pipe 150 is attached to the intake port 122, an intake passage 151 communicating with the separation chamber 111 is formed between the oil separation pipe 150 and the intake port 122, and the oil separation pipe 150 has an exhaust passage 152 communicating with the separation chamber 111.

In the embodiment of the present invention, the compressor 100 further includes a crankshaft 170, a piston 160 and a lower bearing 140, the upper bearing 120 and the lower bearing 140 are respectively sleeved on the upper end and the lower end of the crankshaft 170, the cylinder 110 is disposed on the upper bearing 120 and between the lower bearings 140, the piston 160 is disposed in the cylinder 110 and sleeved on the crankshaft 170. The compressor 100 further includes a driving motor connected to the crankshaft 170 to drive the crankshaft 170 to rotate. The muffler 130 is covered on the upper surface of the upper bearing 120 to form a sealed cavity 131 between the muffler 130 and the upper bearing 120, and the refrigerant after being compressed in the cylinder 110 is discharged into the sealed cavity 131 through the exhaust port 121. The communication port 123 is located in the sealed cavity 131 and is communicated with the sealed cavity 131, the air inlet 122 is located outside the sealed cavity 131, and the air inlet 122 is communicated with the sealed cavity 131 through the communication port 123, so that the air flow in the sealed cavity 131 can flow into the air inlet 122 through the communication port 123 and finally flows into the separation cavity 111 below the air inlet 122.

It should be noted that the air inlet 122 and the communication port 123 may be of an integral through-port structure communicating with each other, or may be of a separate structure, that is, the air inlet 122 and the communication port 123 are provided independently of each other. The communication port 123 mainly serves to communicate the sealed cavity 131 with the air inlet 122, where the communication port 122 is located in the sealed cavity 131, it is understood that the communication port 122 is located at least partially in the sealed cavity 131, that is, the communication port 122 may be located partially in the sealed cavity 131 or entirely in the sealed cavity 131. The specific shape and structure of the communication port 123 are not particularly limited. For example, the cross-sectional shape of the communication port 123 may be circular, oval, square, elongated, or other irregular shapes. In addition, the shape and structure of the air inlet 122 may be various, for example, the cross-sectional shape of the air inlet 122 is circular, oval, square, hexagonal or other irregular shape. The air inlet 122 is a through opening penetrating the upper and lower surfaces of the upper bearing 120, so that the air inlet 122 can be installed with the oil separating pipe 150 on one hand, and can facilitate the air flow flowing into the separating chamber 111 from the air inlet 122 on the other hand. It is understood that the cross-sectional shape of the air inlet 122 may also be circular, oval, square, long strip, or other irregular shapes, etc., which are not limited in particular and may be designed according to the actual use requirement.

In the embodiment of the present invention, the oil separating pipe 150 and the upper bearing 120 may be integrally formed, or may be separately formed, for example, detachably connected. There are various detachable connection manners of the oil separation pipe 150 and the upper bearing 120, for example, the oil separation pipe 150 and the upper bearing 120 may be connected by bonding or may be in interference fit. One end of the oil separation pipe 150 is inserted into the separation chamber 111 through the air inlet 122, and the other end is positioned above the air inlet 122, so that the outlet 152b of the oil separation pipe 150 is positioned above the oil surface in the compressor 100, thereby preventing oil from flowing into the oil separation pipe 150 from the outlet 152b of the oil separation pipe 150. The oil separation pipe 150 forms an intake passage 151 between a pipe section located inside the intake port 122 and the outer peripheral wall of the intake port 122, and the intake pipe communicates with the separation chamber 111. The oil separation pipe 150 has a discharge passage 152, and the discharge passage 152 has an inlet 152a and an outlet 152b, wherein the inlet 152a is provided at the lower end of the oil separation pipe 150, and the outlet 152b is provided at the upper end of the oil separation pipe 150. It should be noted that a sufficient distance is left between the inlet 152a of the exhaust passage 152 and the bottom of the separation chamber 111, that is, a sufficient distance is left between the lower end of the oil separation pipe 150 and the bottom of the separation chamber 111, so that the refrigerant gas separated in the separation chamber 111 flows into the exhaust passage 152 from the inlet 152 a. The oil separation pipe 150 may have various structures, and for example, the oil separation pipe 150 may be a tapered pipe or a straight pipe, and is not particularly limited. The structure of the oil separation pipe 150 will be described in detail below.

The compressor 100 of the present invention includes a cylinder 110, an upper bearing 120, a muffler 130, and an oil separation pipe 150, wherein the cylinder 110 is provided with a separation chamber 111 extending in an up-down direction; the upper bearing 120 is disposed at the upper end of the cylinder 110, the upper bearing 120 is provided with an exhaust port 121, an intake port 122 and a communication port 123, and the intake port 122 is located above the separation chamber 111 and is communicated with the separation chamber 111; the muffler 130 is disposed on the upper bearing 120, a sealed cavity 131 is formed between the muffler 130 and the upper bearing 120, the exhaust port 121 and the communication port 123 are both located in the sealed cavity 131, the intake port 122 is located outside the sealed cavity 131, and the communication port 123 communicates the sealed cavity 131 and the intake port 122; the oil separation pipe 150 is installed at the air inlet 122, an air inlet passage 151 communicating with the separation chamber 111 is formed between the oil separation pipe 150 and the air inlet 122, and the oil separation pipe 150 has an air outlet passage 152 communicating with the separation chamber 111; as shown in fig. 4 and 7, after the refrigerant is compressed in the cylinder 110, the refrigerant is discharged from the exhaust port 121 into the sealed cavity 131, flows into the intake port 122 through the communication port 123, further flows into the separation cavity 111 through the intake passage 151, and when the air flow contacts the oil separation pipe 150, the oil and the refrigerant gas are separated due to the density difference between the oil and the refrigerant gas, and the separated gas flows into the exhaust passage 152 from the inlet 152a of the exhaust passage 152 and is discharged from the outlet 152b of the exhaust passage 152, and the separated oil can flow under the action of its own gravity and finally collects at the bottom of the separation cavity 111. Therefore, the utility model discloses a compressor 100 can improve the oil separating effect effectively, and simultaneously, this compressor 100's simple structure, compactness are favorable to realizing compressor 100's miniaturization.

Referring to fig. 4 and 5, in the present embodiment, the communication port 123 and the air inlet 122 are integral through ports penetrating through the upper bearing 120. Specifically, the communication port 123 and the air inlet 122 are arranged along the radial direction of the upper bearing 120, and the communication port 123 extends along the radial direction of the upper bearing 120 to communicate with the air inlet 122. In this way, the air flow in the seal chamber 131 first flows into the communication port 123, flows from the communication port 123 to the intake port 122, and then flows into the separation chamber 111 through the intake passage 151. Since the communication port 123 extends in the radial direction of the upper bearing 120 to communicate with the intake port 122, the flow rate of the air flow flowing from the communication port 123 to the intake port 122 can be increased, thereby improving the oil separation efficiency.

Further, referring to fig. 4 and 5, in the present embodiment, the cross section of the integral through hole formed by the communication port 123 and the air inlet 122 is spoon-shaped. The cross section of the communication port 123 is long, the cross section of the air inlet 122 is circular, and one inner side wall of the communication port 123 is tangent to the inner wall surface of the air inlet 122. In this way, the airflow in the seal chamber 131 flows into the communication port 123, and in the process of flowing from the communication port 123 to the air inlet 122, the airflow flows to the inner wall surface of the air inlet 122 along the inner wall of the communication port 123, and the airflow flowing to the air inlet 122 flows spirally (as shown in fig. 4) because one inner wall of the communication port 123 is tangent to the inner wall surface of the air inlet 122, so that the contact area between the airflow and the outer peripheral wall of the oil separation pipe 150 can be effectively increased, and the oil separation efficiency can be further improved.

In addition, in the present embodiment, the number of the communication ports 123 is at least one, and the total area of at least one of the communication ports 123 is larger than or equal to the total area of the exhaust ports 121. This can prevent the air flow discharged from the exhaust port 121 from flowing into the communication port 123 at a high speed, thereby reducing a resistance loss when the air flow flows into the communication port 123. In order to reduce the flow rate of the air flow flowing into the communication port 123 and increase the volume of the air flow flowing into the separation chamber 111 to improve the oil separation efficiency, the width of the communication port 123 may be smaller than the diameter D of the air inlet 122, and the length of the communication port 123 may be larger than the diameter D of the air inlet 122. For convenience of description, the length of the communication port 123 is L, the width of the communication port 123 is W, and the diameter of the intake port 122 is D, then W < D < L.

It should be noted that the longer the length of the communication port 123 is, the longer the flow path of the air flow (having a certain viscosity) flowing into the communication port 123 is, the better the oil separation effect is, but the longer the length of the communication port 123 is, the communication port 123 may extend to the outside of the sealed chamber 131, so the length of the communication port 123 needs to satisfy the relation: 0 < L < (Dmb-Dcy-D-W)/2. The length of the communication port 123 is L, the width of the communication port 123 is W, the diameter of the intake port 122 is D, the outer diameter of the upper bearing is Dmb, and the inner diameter of the cylinder is Dcy.

Referring to fig. 4 and 5, in order to reduce airflow resistance when the communication port 123 having an elongated cross section flows into the communication port 123, reduce airflow loss, and reduce noise, one end of the communication port 123 close to the exhaust port 121 may be rounded, that is, one end of the communication port 123 far from the intake port 122 may be rounded.

The structure and number of the oil separation pipes 150 will be described in detail below.

Referring to fig. 6 and 7, in an embodiment, the oil separation pipe 150 includes a first pipe section 153 and a second pipe section 154 connected to the first pipe section 153, and the first pipe section 153 is located below the second pipe section 154. The first pipe section 153 is inserted into the mounting opening, the air inlet channel 151 is formed between the outer peripheral wall of the first pipe section 153 and the inner wall surface of the air inlet 122, and the second pipe section 154 is located above the air inlet 122.

Specifically, the length of the first pipe segment 153 is greater than the sum of the height of the cylinder 110 and the height of the upper bearing 120. The first pipe section 153 is tapered from top to bottom, and optionally, the first pipe section 153 is tapered. An inlet 152a of the exhaust passage 152 is formed at a lower end of the first pipe section 153, and an outlet 152b of the exhaust pipe section is formed at an upper end of the second pipe section 154.

In order to facilitate the refrigerant gas in the separation chamber 111 to flow into the exhaust passage 152 from the inlet 152a of the exhaust passage 152, to improve the separation efficiency, and to prevent the oil from flowing into the exhaust passage 152 from the outlet 152b of the exhaust passage 152 to affect the oil separation effect, the ratio of the length of the first pipe section 153 to the length of the second pipe section 154 may be greater than or equal to 1 and less than or equal to 2. For convenience of description, the length of the first pipe section 153 is h1, the length of the second pipe section 154 is h2, and 1 ≦ h1/h2 ≦ 2. This is because if the length of the first pipe segment 153 is too long, that is, the inlet 152a of the discharge passage 152 is close to the bottom of the separation chamber 111, it is difficult for the refrigerant gas in the separation chamber 111 to rapidly flow into the discharge passage 152 from the inlet 152a, and if the length of the first pipe segment 153 is too short, it is difficult for the gas flow to contact the oil separation pipe 150 in a reduced area, thereby reducing the oil separation efficiency. In addition, if the length of the second pipe section 154 is too short, the outlet 152b of the second pipe section 154 may be located below the oil level, which may easily cause oil to flow from the outlet 152b into the exhaust passage 152, and in combination, the ratio of the length of the first pipe section 153 to the length h2 of the second pipe section 154 may be greater than or equal to 1 and less than or equal to 2. Optionally, the ratio of the length of the first pipe segment 153 to the length of the second pipe segment 154 is greater than or equal to 1.3 and less than or equal to 1.5.

The number of the oil separation pipes 150 may be one, two, three, or more, and is not particularly limited. It can be understood that, when the number of the oil separation pipes 150 is plural, the plural oil separation pipes 150 are arranged at intervals along the circumferential direction of the upper bearing 120, so that the oil separation efficiency can be effectively improved, and the oil separation effect can be further improved. For example, referring to fig. 1, 2, 3, 4 and 8, in an embodiment, the number of the oil separation pipes 150 is four, and four oil separation pipes 150 are spaced along the circumferential direction of the upper bearing 120. Accordingly, the communication ports 123 and the intake ports 122 are each four in number.

Referring to fig. 6 and 7, in order to improve the connection sealing property between the oil separation pipe 150 and the air inlet 122 and prevent the air flow from directly escaping from the gap between the oil separation pipe 150 and the air inlet 122, in an embodiment, an abutting boss 155 may be disposed on the outer peripheral wall of the second pipe segment 154, and the abutting boss 155 abuts against the upper end surface of the air inlet 122. Thus, the abutting boss 155 is improved to completely block the air inlet, so that the air flow can be effectively prevented from directly escaping from a gap between the oil separation pipe 150 and the air inlet 122, and the oil separation effect is ensured.

Referring to fig. 1 and 3, in order to improve the sealing performance of the sealing cavity 131, ensure that the airflow in the sealing cavity 131 completely flows into the communication port 123, and prevent the airflow in the sealing cavity 131 from escaping from the communication port 123 or the air inlet 122, an avoiding groove may be provided on the outer peripheral wall of the muffler 130, the avoiding groove is arranged in an arc shape, and the center of the circle corresponding to the avoiding groove coincides with the center of the oil separation pipe 150. That is, the arc diameter of the bypass groove is equal to the diameter of the second pipe segment 154 of the oil separation pipe 150. In this way, when the oil separation pipe 150 is attached to the air inlet 122, the inner wall surface of the avoiding groove is in contact with the outer wall surface of the second pipe section 154 of the oil separation pipe 150, and thus the air flow in the seal chamber 131 can be prevented from escaping from the communication port 123 or the air inlet 122.

In addition, considering that the volume of the separation chamber 111 affects the oil separation efficiency, the separation chamber 111 may have a larger volume, for example, referring to fig. 6 and 7, in an embodiment, a through groove is provided on the cylinder 110, and the through groove and the lower bearing 140 enclose the separation chamber 111, so that the separation chamber 111 has a larger volume, thereby ensuring the oil separation efficiency. Of course, in other embodiments, the separation chamber 111 may also be a sink provided on the cylinder 110.

Further, an oil groove 142 is formed at the bottom of the separation chamber 111, and the oil groove 142 may be disposed on the cylinder 110 or on the lower bearing 140. Here, the oil groove 142 mainly serves to collect the separated oil.

Without loss of generality, the compressor 100 further includes a housing for mounting the cylinder 110, the upper bearing 120, the lower bearing 140, and the like. The bottom of the housing is provided with an oil sump, and when the compressor 100 operates, lubricating oil in the oil sump is suitable for lubricating various components of the compressor 100, so as to ensure the normal operation of the compressor 100, and thus prolong the service life of the compressor 100. In order to prevent the oil in the oil groove 142 from being accumulated too much, the oil in the oil groove 142 can be discharged in time, and in one embodiment, an oil outlet hole 141 may be formed in the lower bearing 140, and the oil outlet hole 141 communicates with the separation chamber 111. Specifically, the oil outlet hole 141 penetrates upper and lower surfaces of the lower bearing 140 to discharge oil in the oil groove 142 to an oil sump.

The utility model discloses still provide a refrigeration plant, this refrigeration plant includes compressor 100, and above-mentioned embodiment is referred to this compressor 100's concrete structure, because this refrigeration plant has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. Wherein, the refrigeration equipment can be an air conditioner, a refrigerator, a heat pump water heater and the like.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A compressor, comprising:

2. The compressor according to claim 1, wherein the communication port and the intake port are arranged in a radial direction of the upper bearing, and the communication port extends in the radial direction of the upper bearing to communicate with the intake port.

3. The compressor of claim 2, wherein said communication port is elongated in cross-section and said intake port is circular in cross-section, and wherein one of inner side walls of said communication port is tangent to an inner wall surface of said intake port.

4. The compressor of claim 3, wherein the communication port has a length L, the communication port has a width W, and the intake port has a diameter D, wherein W < D < L.

5. The compressor of claim 3, wherein the communication port has a length L, the communication port has a width W, the intake port has a diameter D, the upper bearing has an outer diameter Dmb, and the cylinder has an inner diameter Dcy, wherein 0 < L < (Dmb-Dcy-D-W)/2.

6. The compressor of claim 1, wherein the number of said communication ports is at least one, and a total area of at least one of said communication ports is greater than or equal to a total area of said discharge ports.

7. The compressor according to any one of claims 1 to 6, wherein the oil separation pipe includes a first pipe section, the intake passage is formed between an outer peripheral wall of the first pipe section and an inner wall surface of the intake port, and the first pipe section is tapered from top to bottom.

8. The compressor of claim 7, wherein the oil separation pipe includes a second pipe section connected to the first pipe section, the second pipe section being located above the first pipe section, the first pipe section having a length greater than a sum of a height of the cylinder and a height of the upper bearing.

9. The compressor of claim 8, wherein the outer peripheral wall of the second tube segment is provided with an abutment projection which abuts against an upper end surface of the intake port.

10. The compressor according to any one of claims 1 to 6, wherein the oil separation pipe is integrally formed with or detachably connected to the upper bearing.

11. The compressor according to any one of claims 1 to 6, wherein the oil separation pipe is a tapered pipe or a straight pipe.

12. The compressor according to any one of claims 1 to 6, wherein the number of the oil separation pipes is plural, and the plural oil separation pipes are provided at intervals in a circumferential direction of the upper bearing.

13. The compressor according to any one of claims 1 to 6, further comprising a lower bearing disposed at a lower end of the cylinder, wherein the cylinder is provided with a through groove, and the through groove and the lower bearing enclose the separation chamber.

14. The compressor of claim 13, wherein an oil outlet is provided in said lower bearing, said oil outlet communicating with said separation chamber.

15. A compressor according to any one of claims 1 to 6, wherein an oil sump is provided at the bottom of the separation chamber.

16. A refrigeration apparatus, comprising a compressor as claimed in any one of claims 1 to 15.