Compressor and air conditioning apparatus

Abstract

The application discloses a compressor and air conditioning equipment. The compressor comprises a shell, an oil baffle located in the shell, and an exhaust pipe connected with the oil baffle; one end of the exhaust pipe is connected with the inside of the oil baffle, and the other end of the exhaust pipe is connected with the outside of the shell. When the compressor is working, the oil baffle is arranged so that the air inlet of the exhaust pipe is located at a position close to the central axis of the compressor; most of the lubricating oil in the oil-gas mixture is centrifuged to the inner wall of the shell, so that the content of the lubricating oil in the oil-gas mixture discharged from the compressor through the exhaust pipe is low, and the lubricating oil is not easy to leave the compressor. Meanwhile, the arrangement of the oil baffle makes the high-pressure oil-gas mixture after compression of the compressor not easy to directly enter the exhaust pipe, but to first pass through a certain distance to enter the oil baffle and then to be discharged through the exhaust pipe, so that the lubricating oil in the oil-gas mixture is fully centrifuged to the inner wall of the shell, and the content of the lubricating oil in the oil-gas mixture entering the oil baffle is low enough.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning equipment, in particular to a compressor and air conditioning equipment. BACKGROUND

[0002] As one of the components of air conditioning equipment, the compressor is used for compressing refrigerant. In a related compressor, such as a scroll compressor, a gap between a motor assembly and a compression assembly in a compressor housing forms a receiving cavity, and an exhaust pipe is usually arranged on the inner wall of the housing corresponding to the receiving cavity. High-pressure refrigerant carrying lubricating oil discharged from the compression component of the compressor enters the receiving cavity and is then discharged to other positions of the air conditioning equipment through the exhaust pipe, resulting in that more lubricating oil is discharged from the housing of the compressor, and the internal structure of the compressor cannot be sufficiently lubricated. After the lubricating oil leaving the compressor enters other parts of the air conditioning equipment, the heat conduction performance of the wall surface of the heat exchange part is reduced, resulting in a decrease in the refrigeration performance of the air conditioning equipment. SUMMARY

[0003] An object of the present application is to provide a compressor, which aims to solve the problem that lubricating oil is prone to leave the compressor in the related art.

[0004] To achieve the above object, the embodiments of the present application adopt the following technical solutions:

[0005] A compressor, comprising a housing, an oil baffle located in the housing, and an exhaust pipe connected to the oil baffle; one end of the exhaust pipe is in communication with the inside of the oil baffle, and the other end of the exhaust pipe is in communication with the outside of the housing.

[0006] In one embodiment, the height of the exhaust pipe protruding from the inner surface of the oil baffle is greater than or equal to 1 mm.

[0007] In one embodiment, an installation hole is formed in the oil baffle, and the exhaust pipe is inserted into the installation hole.

[0008] In one embodiment, the installation hole is a circular hole, the exhaust pipe is a circular pipe, and the diameter of the installation hole is greater than or equal to the outer diameter of the circular pipe.

[0009] In one embodiment, at least one oil outlet hole is formed in the oil baffle.

[0010] In one embodiment, the number of oil outlet holes is multiple, and the multiple oil outlet holes are arranged in a circumferential array on the oil baffle.

[0011] In one embodiment, the sum of the areas of the multiple oil outlet holes is greater than the cross-sectional area of the exhaust pipe.

[0012] In one embodiment, the oil outlet hole is a circular hole, and the diameter of the oil outlet hole is less than or equal to 5 mm.

[0013] In one embodiment, the compressor further comprises a bracket connected to the inner wall of the shell; the oil baffle is mounted on the bracket; and a gap is formed between the oil baffle and the inner wall of the shell.

[0014] In one embodiment, a connecting hole is formed in the oil baffle, and the oil baffle is connected to the bracket through the connecting hole.

[0015] In one embodiment, the compressor further comprises a compression assembly, a motor assembly and a crankshaft located in the shell; the crankshaft is connected between the motor assembly and the compression assembly; and a gap is formed between the oil baffle and the motor assembly.

[0016] In one embodiment, the oil baffle is located between the compression assembly and the motor assembly; an opening of the oil baffle is located on a side of the oil baffle facing away from the compression assembly; and a gap is formed between the oil baffle and the motor assembly.

[0017] In one embodiment, the motor assembly comprises a motor rotor connected to the crankshaft, a motor stator arranged around the motor rotor, and a stator lamination connected to an outer surface of the motor stator and connected to the inner wall of the shell.

[0018] In one embodiment, the oil baffle comprises a top plate and a first surrounding baffle connected to the top plate; the first surrounding baffle is arranged opposite to and spaced apart from the motor stator; and the distance between the first surrounding baffle and the motor stator is greater than 0 mm and less than or equal to 5 mm.

[0019] In one embodiment, the oil baffle further comprises a second surrounding baffle connected to an end of the first surrounding baffle away from the top plate; the first surrounding baffle and the second surrounding baffle are both circular rings; the inner diameter of the second surrounding baffle is greater than the inner diameter of the first surrounding baffle; the second surrounding baffle is arranged around the motor stator; and a gap is formed between the second surrounding baffle and the outer surface of the motor stator.

[0020] In one embodiment, the second surrounding baffle is arranged opposite to and spaced apart from the stator lamination; and the distance between the second surrounding baffle and the stator lamination is greater than 0 mm and less than or equal to 4 mm.

[0021] In one embodiment, the compressor further comprises a balance block mounted on the crankshaft, and the balance block is at least partially located in the oil baffle.

[0022] Another object of the present application is to provide an air conditioning device comprising the compressor described in any one of the above embodiments.

[0023] The beneficial effects of the embodiments of the present application are that the inside of the oil baffle and the inner wall of the shell have at least a certain distance. The exhaust pipe is connected to the inside of the oil baffle, so the position where the exhaust pipe communicates with the inside of the shell is located in the inside of the oil baffle. Therefore, the oil-gas mixture that leaves the shell of the compressor through the air inlet of the exhaust pipe is relatively close to the central axis of the compressor, and the content of lubricating oil in the oil-gas mixture is small, so the content of lubricating oil in the oil-gas mixture that enters the exhaust pipe through the air inlet of the exhaust pipe and flows out of the compressor is small. Therefore, the compressor has less lubricating oil flowing out of the compressor per unit time during operation. When the compressor is applied to an air conditioning device, because the lubricating oil is not easy to flow out of the compressor and the content of lubricating oil in the oil-gas mixture flowing out of the compressor is low, the area of the wall surface of the heat exchange part covered by the lubricating oil is small, and the heat exchange performance of the whole heat exchange part is not easily affected. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a sectional view of the compressor in the first embodiment of the present application;

[0026] Figure 2 It is Figure 1 a partial enlarged view of A in the middle;

[0027] Figure 3 It is Figure 1 a schematic view of one of the structures of the oil baffle in the middle;

[0028] Figure 4 It is Figure 1 a schematic view of another structure of the oil baffle in the middle;

[0029] Figure 5 It is Figure 4 a schematic view of another perspective structure of the oil baffle in the middle;

[0030] Figure 6 It is a sectional view of the compressor in the second embodiment of the present application;

[0031] Figure 7 It is Figure 6 a partial enlarged view of B in the middle;

[0032] Figure 8 It is Figure 6 a schematic view of the structure of the oil baffle in the middle;

[0033] Figure 9 The comparative chart of the oil discharge percentage of the compressor provided with the oil baffle and the common compressor of the same specification is provided in the present application;

[0034] In the figure:

[0035] 1, housing; 2, oil baffle; 201, top plate; 202, first surrounding baffle; 203, second surrounding baffle; 204, mounting hole; 205, oil outlet hole; 206, connecting hole; 207, clearance hole; 208, opening; 3, exhaust pipe; 301, air inlet; 4, bracket; 5, compression assembly; 6, motor assembly; 601, motor rotor; 602, motor stator; 603, stator lamination; 7, crankshaft; 8, balance block. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0037] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] The working process of the compressor is that the motor assembly drives the compression assembly to compress the refrigerant, and the compressed refrigerant carrying a certain amount of lubricating oil is discharged into the accommodating cavity, and the refrigerant is discharged from the compressor through the exhaust pipe and reaches other positions of the air conditioning equipment.

[0041] The inventors found that the volume ratio of the lubricating oil to the refrigerant in the oil-refrigerant mixture discharged from the compression part of the compressor is greater than the volume ratio of the lubricating oil to the refrigerant in the oil-refrigerant mixture discharged from the discharge pipe of the compressor. Through repeated experiments, the inventors found that when the motor assembly drives the crankshaft to rotate, the crankshaft and the balance weight on the crankshaft (the balance weight is arranged to keep the relative stability of the crankshaft during rotation because the crankshaft is connected to the eccentric portion of the dynamic vane of the compression part) disturb the oil-refrigerant mixture in the containing cavity through the rotation of the crankshaft, so that the oil-refrigerant mixture is in a highly unstable circular motion. Due to the density difference between the refrigerant and the lubricating oil, the centrifugal motion of the lubricating oil is more intense when the lubricating oil is in a circular motion, and most of the centrifugal motion is to the inner wall of the compressor housing, and is discharged from the discharge pipe of the compressor, so that a large amount of lubricating oil leaves the compressor, resulting in insufficient lubrication at the friction pairs in the compressor.

[0042] To solve the problem, the embodiment of the present application provides a compressor to solve the above problems.

[0043] The implementation of the present application will be described in detail below in combination with specific embodiments.

[0044] As shown in Figures 1-3 The embodiment of the present application provides a compressor, which comprises a housing 1, an oil baffle 2 and a discharge pipe 3. The oil baffle 2 is located in the interior of the housing 1, and the discharge pipe 3 is installed on the oil baffle 2. One end of the discharge pipe 3 is in communication with the interior of the oil baffle 2, and the other end of the discharge pipe 3 is in communication with the exterior of the housing 1 (it can be understood that the housing 1 has a hole for the discharge pipe 3 to communicate with the exterior), thereby realizing the communication between the interior of the oil baffle 2 and the exterior of the compressor. When the compressor is working, the oil-refrigerant mixture (a mixture of refrigerant and lubricating oil) in the housing 1 first enters the oil baffle 2, and then is discharged to the exterior of the housing 1 through the discharge pipe 3 in communication with the oil baffle 2.

[0045] At the same time, when the compressor is working, the motor assembly 6 directly or indirectly drives the oil-refrigerant mixture (a mixture of refrigerant and lubricating oil) in the housing 1 to rotate. Due to the density difference between the refrigerant and the lubricating oil, the centrifugal motion of the lubricating oil is more intense when the lubricating oil is in a circular motion, and most of the centrifugal motion is to the inner wall of the compressor housing 1, and flows downward along the inner wall to the friction pairs of the compressor by its own gravity. Therefore, the recycling rate of the lubricating oil in the compressor is high, and the friction pairs at all parts of the compressor can be fully lubricated, which is not easy to wear and tear and not easy to emit abnormal sound.

[0046] The compressor provided by the embodiments of the present application has the following advantages. The inside of the oil baffle 2 is at least a certain distance from the inner wall of the shell 1, and the distance is at least the thickness of the oil baffle 2. The oil-gas mixture entering the oil baffle 2 from the opening 208 of the oil baffle 2 is relatively far from the inner wall of the shell 1 and relatively close to the central axis of the compressor. The exhaust pipe 3 is in communication with the inside of the oil baffle 2, and thus the position where the exhaust pipe 3 is in communication with the inside of the shell 1 (defined as the air inlet 301) is located in the inside of the oil baffle 2. Therefore, the oil-gas mixture leaving the shell 1 of the compressor through the air inlet 301 of the exhaust pipe 3 is the oil-gas mixture at a position relatively close to the central axis of the compressor and far from the inner wall of the shell 1. At this time, most of the lubricating oil is located on the inner wall of the shell 1 due to centrifugal force, and the content of lubricating oil in the oil-gas mixture at a position close to the central axis of the compressor is small, so that the content of lubricating oil in the oil-gas mixture flowing into the exhaust pipe 3 through the air inlet 301 of the exhaust pipe 3 and out of the compressor is small. Therefore, the compressor has less lubricating oil flowing out of the compressor per unit time during operation. Most of the lubricating oil in the compressor is located at a position far from the air inlet 301 of the exhaust pipe 3, and the lubricating oil is not easy to flow out of the compressor.

[0047] It can be understood that, due to the arrangement of the oil baffle 2, the high-pressure oil-gas mixture compressed by the compressor is not easy to directly enter the exhaust pipe 3, but first enters the oil baffle 2 and then is discharged through the exhaust pipe 3, and the oil-gas mixture is rotated and centrifuged for a long enough time, so that the lubricating oil in the oil-gas mixture is sufficiently centrifuged to the inner wall of the shell 1, and the content of lubricating oil in the oil-gas mixture entering the oil baffle 2 is low enough.

[0048] When the compressor is applied to an air conditioning device, due to the fact that the lubricating oil is not easy to flow out of the compressor, the content of refrigerant in the oil-gas mixture flowing out of the exhaust pipe 3 is high, and a large amount of heat exchange can be generated on the wall surface of the heat exchange part of the air conditioning device, so as to improve the temperature regulation performance. At the same time, the content of lubricating oil in the oil-gas mixture flowing out of the compressor is low, and when the oil-gas mixture flows to the heat exchange part of the air conditioning device, the area of the wall surface of the heat exchange part covered by the lubricating oil is small, so as not to easily affect the overall heat exchange performance of the heat exchange part, and to further ensure the temperature regulation performance of the air conditioning device.

[0049] When the oil-gas mixture in the shell 1 rotates, the lubricating oil particles with a large particle size are centrifuged to the inner wall of the shell 1, and a small number of lubricating oil particles with a small particle size are relatively not easy to be centrifuged to the inner wall of the shell 1, so that the particle size of the lubricating oil particles entering the exhaust pipe 3 through the air inlet 301 of the exhaust pipe 3 is relatively small. The lubricating oil particles with a small particle size are not easy to cover the wall surface of the heat exchange part of the air conditioning device, and are not easy to affect the overall heat exchange performance of the heat exchange part, so as to enable the air conditioning device to have good temperature regulation performance.

[0050] Please refer to Figure 2As another specific embodiment of the compressor provided in the present application, the height of the exhaust pipe 3 protruding from the inner surface of the oil baffle 2 is greater than or equal to 1 mm. The position of the exhaust pipe 3 inside the oil baffle 2 (the air inlet 301) is arranged to be higher than the inner surface of the oil baffle 2 by a certain height; on the one hand, the air inlet 301 of the exhaust pipe 3 is closer to the central axis of the compressor and away from the inner wall of the shell 1, and the oil content of the oil-gas mixture is lower here, and the lubricating oil flowing out of the exhaust pipe 3 is less; on the other hand, the oil-gas mixture inside the oil baffle 2 also rotates due to the rotational flow, and the lubricating oil in the oil-gas mixture inside the oil baffle 2 undergoes secondary centrifugal motion to the inner wall (inner surface) of the oil baffle 2, and the lubricating oil on the inner surface of the oil baffle 2 is not easy to enter the exhaust pipe 3, further improving the difficulty of the lubricating oil leaving the compressor with the exhaust pipe 3.

[0051] Referring to Figure 9 For the compressor provided in the embodiments of the present application, the percentage of oil discharge (the percentage of the oil amount leaving the compressor to the total oil amount) of the compressor provided with the oil baffle 2 is compared with that of the ordinary compressor (not provided with the oil baffle 2) of the same specification. It can be known that, when the rotational speed parameter of the compressor is 60 Hz, the oil discharge of the compressor provided with the oil baffle 2 is 0.58%, while the oil discharge of the ordinary compressor is 1.89%. When the rotational speed parameter of the compressor is 90 Hz, the oil discharge of the compressor provided with the oil baffle 2 is 0.78%, while the oil discharge of the ordinary compressor is 4.6%. Therefore, under the same specification and rotational speed, the oil discharge of the compressor provided with the oil baffle 2 provided in the present application is much smaller than that of the ordinary compressor.

[0052] Referring to Figures 3-5 As another specific embodiment of the compressor provided in the present application, the oil baffle 2 is provided with a mounting hole 204, and the exhaust pipe 3 is inserted into the mounting hole 204 to realize the mounting of the exhaust pipe 3 on the oil baffle 2. Optionally, welding and bonding and other methods can be selected according to the material to improve the stability of the connection between the exhaust pipe 3 and the oil baffle 2.

[0053] Optionally, in other embodiments of the present application, the oil baffle 2 and the exhaust pipe 3 can also be an integral piece. For example, a plastic integrally formed piece, a casting or a metal stamping piece.

[0054] Referring to Figure 2 As another specific embodiment of the compressor provided in the present application, the mounting hole 204 is a circular hole, and the exhaust pipe 3 is a circular pipe.

[0055] Optionally, the diameter of the mounting hole 204 can be set to be equal to or slightly larger than the outer diameter of the circular pipe, so that the exhaust pipe 3 inserted into the mounting hole 204 can be relatively stable and connected with the oil baffle 2.

[0056] Optionally, the diameter of the mounting hole 204 can be set to be larger than the outer diameter of the circular tube, so that the exhaust pipe 3 is easier to insert into the mounting hole 204. At this time, a gap is formed between the inner wall of the mounting hole 204 and the outer wall of the circular tube, and the lubricating oil attached to the inner wall of the oil shield 2 due to secondary centrifugal force can pass through the gap between the inner wall of the mounting hole 204 and the outer wall of the circular tube, exit the oil shield 2, and continue to move to the inner wall of the housing 1, and is not easy to exit the compressor through the exhaust pipe 3.

[0057] Referring to Figures 4-5 , as another specific embodiment of the compressor provided in the present application, at least one oil outlet hole 205 is formed on the oil shield 2. The oil-gas mixture inside the oil shield 2 also rotates due to the rotational flow, and the lubricating oil in the oil-gas mixture inside the oil shield 2 undergoes secondary centrifugal motion to the inner wall of the oil shield 2. The lubricating oil attached to the inner wall of the oil shield 2 can exit the oil shield 2 in time through the oil outlet hole 205, and continue to move to the inner wall of the housing 1, and is not easy to exit the compressor through the exhaust pipe 3.

[0058] Referring to Figures 4-5 , as another specific embodiment of the compressor provided in the present application, the number of oil outlet holes 205 is multiple, and the multiple oil outlet holes 205 are distributed in a circumferential array on the oil shield 2. The circumferential array is defined as the multiple oil outlet holes 205 being located on the same circumference. It can be understood that the multiple oil outlet holes 205 can also form multiple circumferences, that is, a certain number of oil outlet holes 205 form a circumference.

[0059] Referring to Figures 4-5 , as another specific embodiment of the compressor provided in the present application, the sum of the areas of the multiple oil outlet holes 205 is greater than the cross-sectional area of the exhaust pipe 3. When the lubricating oil in the oil-gas mixture inside the oil shield 2 undergoes secondary centrifugal motion to the inner wall of the oil shield 2, there are enough oil outlet holes 205 for the lubricating oil to flow out of the oil shield 2, and it is not easy to be discharged to the outside of the compressor through the exhaust pipe 3.

[0060] Referring to Figures 4-5As another specific embodiment of the compressor provided by the present application, the oil outlet hole 205 is a circular hole, and the diameter of the oil outlet hole 205 is less than or equal to 5 mm. The diameter of the single oil outlet hole 205 is set to be small enough, so that the oil-gas mixture in the oil shield 2 is not easy to exit the oil shield 2 through the oil outlet hole 205, and only the lubricating oil adhered to the inner wall of the oil shield 2 can flow out of the oil shield 2 along the inner wall of the oil outlet hole 205, while the refrigerant is not easy to flow out of the oil shield 2. At the same time, it can effectively ensure that the external oil-gas mixture is not easy to directly enter the oil shield 2 through the oil outlet hole 205, and the oil-gas mixture needs to pass through a certain path to enter the oil shield 2 through the opening 208 of the oil shield 2. The oil-gas mixture is far enough before entering the oil shield 2, and the lubricating oil in the oil-gas mixture is fully centrifuged to the inner wall of the shell 1, so that the content of the lubricating oil in the oil-gas mixture entering the oil shield 2 is low.

[0061] Please refer to Figures 1-2 As another specific embodiment of the compressor provided by the present application, the compressor further comprises a bracket 4 connected to the inner wall of the shell 1; the oil shield 2 is installed on the bracket 4. The oil shield 2 is not in direct contact with the shell 1, so that a gap is formed between the oil shield 2 and the inner wall of the shell 1. According to the requirements, the gap between the oil shield 2 and the inner wall of the shell 1 can be set to be large enough, and the distance between the edge of the oil shield 2 and the central axis of the compressor is small enough, so that the content of the lubricating oil in the oil-gas mixture entering the oil shield 2 is low.

[0062] Please refer to Figures 1-3 As another specific embodiment of the compressor provided by the present application, a connecting hole 206 is formed on the oil shield 2, and a connecting member such as a screw can be arranged between the oil shield 2 and the bracket 4 to connect the oil shield 2 to the bracket 4 through the connecting hole 206. Alternatively, a clamping member can be arranged on the bracket 4 to cooperate with the connecting hole 206 on the oil shield 2 to clamp the oil shield 2 to the bracket 4.

[0063] Please refer to Figures 1-2 As another specific embodiment of the compressor provided by the present application, the compressor further comprises a compression assembly 5, a motor assembly 6 and a crankshaft 7 located in the shell 1; the crankshaft 7 is connected between the motor assembly 6 and the compression assembly 5, and the oil shield 2 is provided with a gap hole 207 for the crankshaft 7 to pass through. The motor assembly 6 drives the crankshaft 7 to rotate, and the crankshaft 7 drives the compression assembly 5 to complete the compression work. When the rotor of the motor assembly 6 rotates and the crankshaft 7 rotates, a rotational flow is generated in the interior of the shell 1, which drives the oil-gas mixture in the shell 1 to rotate, so that the lubricating oil in the oil-gas mixture is centrifuged to the inner wall of the shell 1.

[0064] Please refer to Figure 2As another specific embodiment of the compressor provided by the present application, the oil baffle 2 is located between the compression assembly 5 and the motor assembly 6; the opening 208 of the oil baffle 2 is located on the side of the oil baffle 2 facing away from the compression assembly 5, and a gap is formed between the oil baffle 2 and the motor assembly 6. During operation of the compressor, the high-pressure oil-gas mixture discharged from the compression assembly 5 enters between the compression assembly 5 and the motor assembly 6, and then is transported to the opening 208 of the oil baffle 2, and enters the oil baffle 2 through the opening 208. Therefore, the oil-gas mixture discharged from the compression assembly 5 needs to be transported for a certain distance to reach the opening 208 of the oil baffle 2 and enter the inside of the oil baffle 2, and then is discharged from the compressor through the exhaust pipe 3. Therefore, the time for the oil-gas mixture to rotate before entering the oil baffle 2 is large enough, and the lubricating oil in the oil-gas mixture can be sufficiently centrifuged to the inner wall of the shell 1, so that the content of the lubricating oil in the oil-gas mixture entering the oil baffle 2 is low enough.

[0065] Optionally, the compression assembly 5 can be installed in the shell 1 through the support 4, and is located on the side of the support 4 facing away from the oil baffle 2. Therefore, the oil-gas mixture discharged from the compression assembly 5 first moves along the outer surface of the oil baffle 2, and moves to the opening 208 of the oil baffle 2 while rotating, and finally enters the oil baffle 2.

[0066] Please refer to Figure 2 and Figure 7 As another specific embodiment of the compressor provided by the present application, the motor assembly 6 includes a motor rotor 601 connected to the crankshaft 7, a motor stator 602 arranged around the motor rotor 601, and a stator lamination 603 connected to the outer surface of the motor stator 602 and connected to the inner wall of the shell 1. For example, the motor stator 602 can be the component of the motor assembly 6 closest to the oil baffle 2, and the oil-gas mixture can pass through the gap between the oil baffle 2 and the motor stator 602 and enter the inside of the oil baffle 2.

[0067] Please refer to Figure 2 and Figure 7 As another specific embodiment of the compressor provided by the present application, the oil baffle 2 includes a top plate 201, and a first surrounding baffle plate 202 connected to the top plate 201; the first surrounding baffle plate 202 is arranged opposite to and spaced apart from the motor stator 602, and the distance between the first surrounding baffle plate 202 and the motor stator 602 is greater than 0 mm and less than or equal to 5 mm. The distance between the first surrounding baffle plate 202 and the motor stator 602 is set to be small enough, so that the oil-gas mixture is not easy to quickly enter the oil baffle 2, and the oil-gas mixture can rotate sufficiently outside the oil baffle 2, so that a large amount of lubricating oil is centrifuged to the inner wall of the shell 1, and the content of the lubricating oil in the oil-gas mixture entering the oil baffle 2 is low enough.

[0068] Optionally, the mounting hole 204 in the above embodiment can be located on the first surrounding baffle plate 202, the oil outlet hole 205 can also be located on the first surrounding baffle plate 202, and the connecting hole 206 can be located on the top plate 201. When the oil shield 2 is installed between the top plate 201 and the surface, the top plate 201 of the oil shield 2 is attached to the surface.

[0069] Please refer to Figures 6-8 As another specific embodiment of the compressor provided in the present application, the oil shield 2 further comprises a second surrounding baffle plate 203 connected to the end of the first surrounding baffle plate 202 away from the top plate 201; the first surrounding baffle plate 202 and the second surrounding baffle plate 203 are both circular rings, and the inner diameter of the second surrounding baffle plate 203 is greater than that of the first surrounding baffle plate 202; the second surrounding baffle plate 203 is arranged around the motor stator 602, and a gap is formed between the second surrounding baffle plate 203 and the outer surface of the motor stator 602. At this time, the oil-gas mixture discharged from the compression assembly 5 first moves along the outer surface of the oil shield 2, and finally enters the oil shield 2, and the oil-gas mixture travels (not counting rotational motion) a distance of: passing through the top plate 201, flowing along the outer surface of the first surrounding baffle plate 202 to the second surrounding baffle plate 203, and continuing to move along the outer surface of the second surrounding baffle plate 203 until reaching the end of the second surrounding baffle plate 203 away from the compression assembly 5, and then reaching the opening 208 of the oil shield 2 through the gap between the second surrounding baffle plate 203 and the stator lamination 603. Then, it enters the interior of the second surrounding baffle plate 203 of the oil shield 2 through the gap between the second surrounding baffle plate 203 and the outer surface of the motor stator 602. The distance that the oil-gas mixture moves outside the oil shield 2 is greater than the gap between the motor assembly 6 and the compression assembly 5, which improves the centrifugal degree of the lubricating oil in the oil-gas mixture and reduces the content of the lubricating oil in the oil-gas mixture entering the oil shield 2.

[0070] Optionally, when the mounting hole 204 is opened on the first surrounding baffle plate 202 of the oil shield 2, and the exhaust pipe 3 is located in the area of the first surrounding baffle plate 202 of the oil shield 2, the oil-gas mixture entering the oil shield 2 from the opening 208 of the oil shield 2 also needs to pass through the interior of the second surrounding baffle plate 203 to reach the air inlet 301 of the exhaust pipe 3. The distance and time that the oil-gas mixture moves inside the oil shield 2 are also sufficient, and the time for the oil-gas mixture to be centrifuged twice in the oil shield 2 is also sufficient, so that the lubricating oil in the oil-gas mixture in the oil shield 2 is centrifuged twice to the inner wall of the oil shield 2, further reducing the content of the lubricating oil in the oil-gas mixture discharged from the exhaust pipe 3.

[0071] Please refer to Figure 7As another specific embodiment of the compressor provided in the present application, the second baffle 203 is arranged opposite to the stator lamination 603 with a distance greater than 0 mm and less than or equal to 4 mm. The distance between the second baffle 203 and the stator lamination 603 is set to be small enough so that the oil-gas mixture is not easy to quickly enter the oil baffle 2, and the oil-gas mixture can rotate sufficiently outside the oil baffle 2, so that the lubricating oil is centrifuged to the inner wall of the shell 1 in a large amount, and the content of the lubricating oil in the oil-gas mixture entering the oil baffle 2 is low enough.

[0072] Please refer to Figure 2 and Figure 7 As another specific embodiment of the compressor provided in the present application, the compressor further comprises a balance block 8 mounted on the crankshaft 7, and the balance block 8 is at least partially located in the oil baffle 2 (that is, a part of the structure of the balance block 8 extends into the oil baffle 2, for example, one end). The balance block 8 can form a strong rotational flow in the small space inside the oil baffle 2, together with the inner wall of the oil baffle 2, to drive the oil-gas mixture to rotate, so that the lubricating oil in the oil-gas mixture is sufficiently centrifuged and is not easy to be discharged from the compressor along with the refrigerant through the exhaust pipe 3.

[0073] At the same time, the oil baffle 2 can isolate the balance block 8 in the oil baffle 2 from the oil-gas mixture outside the oil baffle 2 to some extent, so that the balance block 8 is not easy to impact the oil-gas mixture just flowing out of the compression assembly 5 when the balance block 8 rotates with the crankshaft 7, and the oil droplets and oil films of the lubricating oil are not easy to be broken, so that the single oil droplets and oil films are large and are beneficial to be centrifuged to the inner wall of the shell 1. Optionally, the balance block 8 can be entirely placed in the oil baffle 2 to maximize the isolation of the balance block 8 from the oil-gas mixture outside the oil baffle 2.

[0074] The embodiments of the present application also provide an air conditioning device comprising the compressor in any of the above embodiments. Since the lubricating oil is not easy to flow out of the compressor, the content of the refrigerant in the oil-gas mixture flowing out of the compressor through the exhaust pipe 3 is high, a large amount of heat exchange can be generated on the wall surface of the heat exchange part of the air conditioning device, and the temperature regulation performance is improved. At the same time, the content of the lubricating oil in the oil-gas mixture flowing out of the compressor is low, and when the oil-gas mixture flows to the heat exchange part of the air conditioning device, the area of the wall surface of the heat exchange part covered by the lubricating oil is small, which is not easy to affect the overall heat exchange performance of the heat exchange part, and further ensures the temperature regulation performance of the air conditioning device.

[0075] When the mixture of oil and gas in the shell 1 rotates, the lubricating oil particles with larger particle size are centrifuged to the inner wall of the shell 1, and a few lubricating oil particles with smaller particle size are relatively difficult to be centrifuged to the inner wall of the shell 1, so the particle size of the lubricating oil particles entering the exhaust pipe 3 through the air inlet 301 of the exhaust pipe 3 is relatively small. The lubricating oil particles with smaller particle size are not easy to cover the wall surface of the heat exchange part of the air conditioning equipment, and are not easy to affect the overall heat exchange performance of the heat exchange part, so that the air conditioning equipment has better temperature regulation performance.

[0076] Since the lubricating oil is not easy to leave the compressor, the recycling rate of the lubricating oil in the compressor is high, the friction pairs at each part of the compressor can be fully lubricated, and are not easy to be worn and not easy to emit abnormal sound. For example, when the compressor works, the lubricating oil centrifuged to the inner wall of the shell 1 can move to the motor assembly 6 along the inside of the shell 1, the motor assembly 6 can be fully lubricated when working, the friction loss is low, and the service life of the motor assembly 6 can also be better guaranteed.

[0077] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made in the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A compressor characterized by, The compressor comprises a shell, an oil baffle in the shell, and an exhaust pipe connected with the oil baffle; one end of the exhaust pipe is connected with the inside of the oil baffle, and the other end of the exhaust pipe is connected with the outside of the shell; the oil baffle comprises a top plate and a first surrounding baffle connected with the top plate; the first surrounding baffle is opposite to and spaced from the motor stator; the oil baffle further comprises a second surrounding baffle connected with the end of the first surrounding baffle away from the top plate; the first surrounding baffle and the second surrounding baffle are both circular rings, the inner diameter of the second surrounding baffle is greater than the inner diameter of the first surrounding baffle; the second surrounding baffle surrounds the motor stator, and a gap is formed between the second surrounding baffle and the outer surface of the motor stator; the height of the exhaust pipe protruding from the inner surface of the oil baffle is greater than or equal to 1 mm; a plurality of oil outlet holes are formed in the oil baffle, the plurality of oil outlet holes are arranged in a circular array on the oil baffle, the oil outlet holes are located on the first surrounding baffle, and the sum of the areas of the plurality of oil outlet holes is greater than the cross-sectional area of the exhaust pipe.

2. The compressor of claim 1, wherein, The oil baffle is provided with a mounting hole, and the exhaust pipe is inserted into the mounting hole.

3. The compressor of claim 2, wherein, The mounting hole is a circular hole, the exhaust pipe is a circular pipe, and the diameter of the mounting hole is greater than or equal to the outer diameter of the circular pipe.

4. The compressor of claim 1, wherein, The oil outlet hole is a circular hole, and the diameter of the oil outlet hole is less than or equal to 5 mm.

5. The compressor of claim 1, wherein, The compressor further comprises a bracket connected with the inner wall of the shell; the oil baffle is mounted on the bracket; a gap is formed between the outer wall of the oil baffle and the inner wall of the shell.

6. The compressor of claim 5, wherein, The oil baffle is provided with a connecting hole, and the oil baffle is connected with the bracket through the connecting hole.

7. The compressor of claim 1, wherein, The compressor further comprises a compression assembly, a motor assembly and a crankshaft in the shell; the crankshaft is connected between the motor assembly and the compression assembly; the oil baffle is provided with a gap hole for the crankshaft to pass through.

8. The compressor of claim 7, wherein, The oil baffle is located between the compression assembly and the motor assembly; the opening of the oil baffle is located on the side of the oil baffle facing away from the compression assembly, and a gap is formed between the oil baffle and the motor assembly.

9. The compressor of claim 8, wherein, The motor assembly comprises a motor rotor connected with the crankshaft, a motor stator surrounding the motor rotor, and a stator lamination connected with the outer surface of the motor stator and connected with the inner wall of the shell.

10. The compressor of claim 9, wherein, The distance between the first surrounding baffle and the motor stator is greater than 0 mm and less than or equal to 5 mm.

11. The compressor of claim 10, wherein, The second surrounding baffle is opposite to and spaced from the stator lamination, and the distance between the second surrounding baffle and the stator lamination is greater than 0 mm and less than or equal to 4 mm.

12. The compressor of claim 7, wherein, The compressor further comprises a balance block mounted on the crankshaft, and the balance block is at least partially located in the oil baffle.

13. Air conditioning apparatus characterized by The compressor comprises the compressor according to any one of claims 1-12.

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