Compressor and air conditioner having the same

Abstract

The present invention provides a compressor and an air conditioner having the same, wherein the compressor includes: a housing, a motor assembly, a pump body assembly and a separator, wherein the motor assembly, the pump body assembly and the separator are all installed in the housing, the separator is located between the motor assembly and the pump body assembly, and the separator has an atomizing structure. According to the present invention, by arranging a separator between the motor assembly and the pump body assembly, when the compressed high-pressure oil-gas mixture flows through the separator, the oil-gas mixture is guided by the separator and atomized by the atomizing structure thereon, and the atomized oil-gas mixture is sprayed toward the stator core of the motor, so that the stator core is subjected to better oil-gas separation due to the heat generated during operation and the oil-gas mixture colliding with the stator core, thereby ensuring sufficient oil in the oil pool at the bottom of the compressor, overcoming the problem of lack of oil inside the compressor and the inability of each friction pair to be well lubricated.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and in particular relates to a compressor and an air conditioner having the same. Background Art

[0002] Common compressors used in air conditioners are scroll and roller compressors. Scroll compressors primarily consist of a fixed scroll, an orbiting scroll, a motor, an upper bracket, a lower bracket, a cross ring, and a crankshaft. Roller compressors primarily consist of a cylinder, a vane spring, a motor, a crankshaft, a rolling rotor, an upper bearing block, and a lower bearing block. To ensure effective lubrication of the friction pairs between compressor components during operation, maintaining sufficient oil in the oil sump during the oil lubrication cycle is crucial for compressor reliability. Under high-temperature cooling conditions, the compressor experiences high intake air flow and high operating frequency. Due to a lack of internal components to atomize the oil-air mixture and direct it toward the motor's stator core, ensuring adequate separation of the refrigerant oil and gaseous refrigerant on the heated stator core, a significant portion of the refrigerant oil is carried over into the refrigerant circulation system. This results in oil starvation within the compressor, poor lubrication of the friction pairs, wear, and reduced reliability. Summary of the Invention

[0003] Therefore, the present invention provides a compressor that can overcome the shortcomings of existing compressors due to the lack of a component that can atomize the oil-gas mixture and can guide the atomized oil-gas mixture to spray toward the stator core of the motor so that the refrigeration oil and the gaseous refrigerant are fully separated on the heated stator core, thereby causing most of the refrigeration oil to be entrained by the refrigerant into the circulation system, resulting in oil shortage inside the compressor unit and the inability of each friction pair to be well lubricated.

[0004] In order to solve the above problems, the present invention provides a compressor, including: a shell, a motor assembly, a pump body assembly and a partition, the motor assembly, the pump body assembly and the partition are all installed in the shell, the partition is located between the motor assembly and the pump body assembly, and the partition has an atomization structure.

[0005] In some embodiments, the partition includes a radial end surface, the atomization structure is located on the radial end surface, and the atomization structure includes a plurality of through holes axially extending through the radial end surface.

[0006] In some embodiments, the through hole has a diameter of 2.5-3.5 mm.

[0007] In some embodiments, the separator also includes a first flaring structure connected to the first side of the radial end surface, the first flaring structure extends along the outer edge of the radial end surface toward the direction of the pump body assembly, and the end of the first flaring structure away from the radial end surface is connected to the inner wall of the shell.

[0008] In some embodiments, an end of the first flared structure away from the radial end surface is connected to the inner wall of the housing by interference fit.

[0009] In some embodiments, the first flared structure has a flange at one end away from the radial end surface, and the flange is interference-fitted with the inner wall of the housing.

[0010] In some embodiments, the shell has a cylindrical portion, any radial cross-section of the inner wall of the cylindrical portion is a first circle, the diameter of the first circle is d1, the projection of the outer wall surface of the flange within the first circle is a second circle, the diameter of the second circle is d2, and 0.1mm≤d2-d1≤0.4mm; and / or, the flange is welded and fixed to the inner wall of the shell.

[0011] In some embodiments, the separator further includes a second flared structure connected to the second side of the radial end surface, and the second flared structure extends along the outer edge of the radial end surface toward the direction of the motor assembly.

[0012] In some embodiments, the motor assembly includes a motor, the motor includes a stator core, and a gap is formed between an end of the second flared structure away from the radial end surface and the stator core.

[0013] In some embodiments, a vertical distance between an end of the second flared structure away from the radial end surface and the stator core is h, and 2 mm ≤ h ≤ 3 mm.

[0014] In some embodiments, an exhaust pipe is further included. The outer wall surface of the first expansion structure, the outer wall surface of the second expansion structure and the inner wall of the shell together form a receiving space. The exhaust pipe passes through the shell and is connected to the receiving space.

[0015] In some embodiments, the motor further includes a rotor, and a spiral air guide groove surrounding the axial direction of the rotor is configured on an outer surface of the rotor.

[0016] In some embodiments, the stator core is constructed with a drainage channel that runs through the stator core axially, and the drainage channel is connected to the accommodating space. The airflow discharged from the spiral air guide groove can be guided into the accommodating space through the drainage channel.

[0017] The present invention also provides an air conditioner comprising the above-mentioned compressor.

[0018] The present invention provides a compressor and an air conditioner equipped with the same. A separator is provided between a motor assembly and a pump assembly. When a compressed high-pressure oil-gas mixture flows through the separator, the oil-gas mixture is guided by the separator and atomized by an atomizing structure thereon. The atomized oil-gas mixture is then sprayed toward the stator core of the motor. Because the oil-gas mixture is atomized, it can fully contact the stator core, allowing the heated stator core to effectively separate the oil-gas mixture. The oil-gas separation is primarily due to two factors: the miscibility ratio between the refrigeration oil and the refrigerant decreases with increasing temperature, and high-speed airflow collisions promote oil-gas separation. After the oil-gas mixture is effectively separated, the separated refrigeration oil rapidly flows back into the oil pool at the bottom of the housing through the gap between the stator core and the rotor, as well as other gaps. This ensures a sufficient amount of oil in the oil pool at the bottom of the compressor, overcoming the drawbacks of a single compressor that suffers from oil shortages, poor lubrication of the friction pairs, wear, and reduced reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of a compressor according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of point A of a compressor according to an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the separated atomization structure of the compressor according to an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the motor rotor of the compressor according to an embodiment of the present invention.

[0023] The reference numerals indicate:

[0024] 1. Housing; 2. Motor assembly; 3. Pump body assembly; 4. Partition; 41. Radial end face; 42. Through hole; 43. First flaring structure; 44. Flanging; 45. Second flaring structure; 5. Exhaust pipe; 6. Accommodation space; 7. Rotor; 8. Spiral air guide groove; 9. Drainage channel. DETAILED DESCRIPTION

[0025] See also Figures 1 to 4As shown, according to an embodiment of the present invention, a compressor is provided, comprising: a housing 1, a motor assembly 2, a pump assembly 3, and a separator 4. The motor assembly 2, the pump assembly 3, and the separator 4 are all installed in the housing 1, and the separator 4 is located between the motor assembly 2 and the pump assembly 3. The separator 4 has an atomizing structure. In this technical solution, the separator 4 is a sheet metal part with good toughness, which can be a thin plate such as SPCC, SPHC, or SPHD. This application provides a compressor by providing a separator 4 between the motor assembly 2 and the pump assembly 3. When the compressed high-pressure oil-gas mixture flows through the separator 4, the oil-gas mixture is guided by the separator 4 and atomized by the atomizing structure thereon. The atomized oil-gas mixture is sprayed toward the stator core of the motor. Since the oil-gas mixture is atomized, it can fully contact the stator core, so that the heated stator core can effectively separate the oil and gas mixture. The oil-gas separation is mainly due to two reasons. On the one hand, the miscibility ratio between the refrigeration oil and the refrigerant decreases with increasing temperature, and on the other hand, the collision of high-speed airflow promotes oil-gas separation. After the oil-gas mixture is effectively separated, the separated refrigerant oil will quickly flow back to the oil pool at the bottom of the shell 1 from the gap between the stator core and the rotor and other gaps, thereby ensuring that there is sufficient oil in the oil pool at the bottom of the compressor, overcoming the shortcomings of oil shortage inside the compressor, poor lubrication of the friction pairs, wear of the compressor and reduced reliability.

[0026] As a specific implementation, the separator 4 includes a radial end surface 41 , the atomization structure is located on the radial end surface 41 , and the atomization structure includes a plurality of through holes 42 axially penetrating the radial end surface 41 .

[0027] In this embodiment, in addition to constructing a plurality of through holes 42 on the radial end face 41, the atomizing structure can also be provided with a plurality of nozzles facing the motor assembly 2 on the radial end face 41. When the atomizing structure is a through hole (42), it is not only easy to process, but also does not require additional components. When the compressed oil-gas mixture moves in the housing 1, it will be blocked by the radial end face 41, and then sprayed out from the through holes 42 constructed on the radial end face 41 or from the nozzles provided on the radial end face 41, thereby achieving airflow atomization. The atomized airflow can be sprayed onto the stator core of the motor, thereby achieving the first oil-gas separation of the oil-gas mixture by the heated stator core. Among them, when the oil-gas mixture hits the radial end face 41, the collision of the high-speed airflow will also promote the oil-gas separation. Further, the compressor includes a crankshaft, and the radial end face 41 is sleeved on the crankshaft in a clearance fit manner, so that the radial end face 41 and the rotating crankshaft can avoid mutual influence.

[0028] As a specific implementation, the diameter of the through hole 42 is 2.5-3.5 mm.

[0029] In this embodiment, in order to obtain the most ideal atomization effect, the diameter of the through hole 42 is preferably 2.5 mm to 3.5 mm.

[0030] As a specific embodiment, the partition 4 also includes a first flaring structure 43 connected to the first side of the radial end face 41, the first flaring structure 43 extends along the outer edge of the radial end face 41 toward the direction of the pump body assembly 3, and the end of the first flaring structure 43 away from the radial end face 41 is connected to the inner wall of the shell 1.

[0031] In this embodiment, the first flared structure 43 and radial end surface 41 combine to form a bowl-shaped structure. When the end of the first flared structure 43, distal from the radial end surface 41, connects to the inner wall of the housing 1, it partitions the space within the housing 1. The downwardly directed oil-gas mixture, guided by the first flared structure 43, can only be atomized and discharged from the through-holes 42 or nozzles in the radial end surface 41. The provision of the first flared structure 43 ensures that all compressed oil-gas mixture is atomized and then separated, thereby ensuring effective separation.

[0032] As a specific implementation, one end of the first flared structure 43 away from the radial end surface 41 is connected to the inner wall of the housing 1 by interference fit.

[0033] In this embodiment, the first flared structure 43 and the inner wall of the housing 1 are connected by interference fit. Not only is the connection method simple and effective, but the interference fit connection method does not require additional components or unnecessary means.

[0034] As a specific implementation, the first flared structure 43 has a flange 44 at one end away from the radial end surface 41 , and the flange 44 is interference fit with the inner wall of the housing 1 .

[0035] In this embodiment, since there is a gap between the flange 44 and the main wall of the first flared structure 43, the flange 44 is easy to rebound toward the center direction of the first flared structure 43 after being compressed, thereby making the interference fit assembly of the first flared structure 43 and the inner wall of the shell 1 more convenient.

[0036] As a specific embodiment, the shell 1 has a cylindrical part, any radial cross-section of the inner wall of the cylindrical part is a first circle, the diameter of the first circle is d1, the projection of the outer wall surface of the flange 44 within the first circle is a second circle, the diameter of the second circle is d2, 0.1mm≤d2-d1≤0.4mm; and / or, the flange 44 is welded and fixed to the inner wall of the shell 1.

[0037] In this embodiment, to achieve both an interference fit for the separator 4 within the housing 1 and ease of assembly, a certain interference fit is required. Specifically, the difference between the diameter of the second circle and the diameter of the first circle is between 0.1 mm and 0.4 mm. Preferably, the flange 44 is spot welded to the inner wall of the housing 1. Welding is another method of attaching the flange 44 to the inner wall of the housing 1, which provides a more secure connection.

[0038] As a specific embodiment, the separator 4 further includes a second flaring structure 45 connected to the second side of the radial end surface 41 , and the second flaring structure 45 extends along the outer edge of the radial end surface 41 toward the direction of the motor assembly 2 .

[0039] In this embodiment, the second flared structure 45 and radial end surface 41 together form a bowl-like structure. The entire separator 4 resembles a bowl-on-a-bowl structure, and the two bowls share a common bottom, namely, the radial end surface 41. The second flared structure 45 covers the interior of the stator core and is not connected to the inner wall of the housing 1, with a certain gap between them. The second flared structure 45 primarily serves to separate and guide the airflow, which, after atomization and the initial oil-gas separation, enters the gap between the stator core and the rotor 7, providing the necessary conditions for the secondary oil-gas separation.

[0040] As a specific embodiment, the motor assembly 2 includes a motor, the motor includes a stator core, and a gap is formed between an end of the second flared structure 45 away from the radial end surface 41 and the stator core.

[0041] In this embodiment, when the motor in the motor assembly 2 is in operation, the windings on the stator core therein will be energized and heated. In order to prevent the heat on the stator core from being transferred to the second flared structure 45, which would cause the first oil-gas separation to occur prematurely, and to prevent the electricity on the windings from being transferred to the second flared structure 45, which would cause an electrical safety accident, a gap is required between the end of the second flared structure 45 away from the radial end face 41 and the stator core.

[0042] As a specific implementation manner, the vertical distance between the end of the second flared structure 45 away from the radial end surface 41 and the stator core is h, 2mm≤h≤3mm.

[0043] In this embodiment, in order for the second flared structure 45 to better separate and guide the airflow, the vertical distance between the end of the second flared structure 45 away from the radial end face 41 and the stator core must also be within a certain range. In this solution, the vertical distance is between 2 mm and 3 mm.

[0044] As a specific embodiment, it also includes an exhaust pipe 5. The outer wall surface of the first expansion structure 43, the outer wall surface of the second expansion structure 45 and the inner wall of the shell 1 together form an accommodating space 6. The exhaust pipe 5 passes through the shell 1 and is connected to the accommodating space 6.

[0045] In this embodiment, combined with Figure 1 and Figure 2 As shown, in order to make the oil-gas mixture travel a longer path and the refrigeration oil be separated more thoroughly, the gas finally discharged is preferably only the refrigerant gas and the oil-gas mixture. It is best not to discharge it from the exhaust pipe 5 in advance before the oil-gas separation is performed. It is most appropriate to set the exhaust pipe 5 in a place connected to the accommodating space 6.

[0046] As a specific embodiment, the motor further includes a rotor 7 , and a spiral air guide groove 8 surrounding the axial direction of the rotor 7 is configured on the outer surface of the rotor 7 .

[0047] In this embodiment, the oil-gas mixture after the first separation will enter the spiral air guide groove 8 on the outer surface of the rotor 7. Under the action of centrifugal force, the oil-gas mixture entering the spiral air guide groove 8 will undergo a second deep separation, thereby separating the refrigerant oil from the air flow of the oil-gas mixture more thoroughly.

[0048] As a specific embodiment, a drainage channel 9 is constructed on the stator core and runs through the stator core axially. The drainage channel 9 is connected to the accommodating space 6, and the airflow discharged by the spiral air guide groove 8 can be guided into the accommodating space 6 through the drainage channel 9.

[0049] In this embodiment, the airflow after the second separation is discharged into the motor lower chamber through the spiral air guide groove 8. The airflow entering the motor lower chamber is guided by the drainage channel 9 upward from the motor lower chamber into the accommodating space 6 and ultimately discharged through the exhaust pipe 5. As the airflow moves upward within the drainage channel 9, gravity further separates the refrigerant oil from the oil-gas mixture, ensuring that the gas ultimately discharged is refrigerant gas only.

[0050] According to an embodiment of the present invention, there is also provided an air conditioner comprising the above-mentioned compressor.

[0051] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A compressor, characterized in that: The invention comprises a housing (1), a motor assembly (2), a pump assembly (3) and a separator (4), wherein the motor assembly (2), the pump assembly (3) and the separator (4) are all installed in the housing (1), the separator (4) is located between the motor assembly (2) and the pump assembly (3), and the separator (4) has an atomizing structure; The separator (4) includes a radial end surface (41), the atomization structure is located on the radial end surface (41), and the atomization structure includes a plurality of through holes (42) axially extending through the radial end surface (41); The separator (4) further includes a second flared structure (45) connected to a second side of the radial end surface (41), wherein the second flared structure (45) extends along the outer edge of the radial end surface (41) in the direction of the motor assembly (2); The motor assembly (2) includes a motor, the motor includes a stator core, a gap exists between an end of the second flared structure (45) away from the radial end surface (41) and the stator core, and a vertical distance h between an end of the second flared structure (45) away from the radial end surface (41) and the stator core is 2 mm ≤ h ≤ 3 mm.

2. The compressor according to claim 1, characterized in that The through hole (42) has a diameter of 2.5-3.5 mm.

3. The compressor according to claim 1, characterized in that The separator (4) further comprises a first flared structure (43) connected to a first side of the radial end surface (41), the first flared structure (43) extending along the outer edge of the radial end surface (41) in the direction of the pump body assembly (3), and an end of the first flared structure (43) away from the radial end surface (41) is connected to the inner wall of the housing (1).

4. The compressor according to claim 3, characterized in that One end of the first flared structure (43) away from the radial end surface (41) is connected to the inner wall of the housing (1) by interference fit.

5. The compressor according to claim 4, characterized in that An end of the first flared structure (43) away from the radial end surface (41) has a flange (44), and the flange (44) is interference-fitted with the inner wall of the housing (1).

6. The compressor according to claim 5, characterized in that The shell (1) has a cylindrical portion, any radial cross-section of the inner wall of the cylindrical portion is a first circle, the diameter of the first circle is d1, the projection of the outer wall surface of the flange (44) within the first circle is a second circle, the diameter of the second circle is d2, 0.1mm≤d2-d1≤0.4mm; and / or the flange (44) is welded and fixed to the inner wall of the shell (1).

7. The compressor according to claim 3, characterized in that It also includes an exhaust pipe (5), wherein the outer wall surface of the first flared structure (43), the outer wall surface of the second flared structure (45) and the inner wall of the shell (1) together enclose a receiving space (6), and the exhaust pipe (5) passes through the shell (1) and is in communication with the receiving space (6).

8. The compressor according to claim 7, characterized in that The motor further comprises a rotor (7), wherein a spiral air guide groove (8) surrounding the axial direction of the rotor (7) is formed on the outer surface of the rotor (7).

9. The compressor according to claim 8, characterized in that The stator core is provided with a drainage channel (9) running through the stator core in the axial direction. The drainage channel (9) is connected to the accommodating space (6). The airflow discharged from the spiral air guide groove (8) can be guided into the accommodating space (6) through the drainage channel (9).

10. An air conditioner, characterized in that: A compressor comprising the compressor according to any one of claims 1 to 9.

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