A drive component cooling structure and scroll compressor

Abstract

The present invention discloses a drive assembly cooling structure and a scroll compressor. The drive assembly cooling structure is arranged inside the scroll compressor and includes: an air intake baffle, which is arranged at the air intake of the scroll compressor and is used to separate the airflow entering the scroll compressor from the air intake into two parts, one part of the airflow directly enters between the fixed scroll plate and the orbiting scroll plate from the scroll air intake, and the other part of the airflow flows to the drive assembly of the scroll compressor; an oil guide pipe, which is used to connect the compressor oil pool and the bearing assembly of the scroll compressor, and the oil guide pipe is arranged on the other side of the scroll compressor opposite to the air intake. The present invention adds an air intake baffle at the air intake of the scroll compressor, so that part of the airflow flows to the drive assembly (motor) side, thereby improving its cooling effect. In addition, the oil guide pipe is used to guide the flow of lubricating oil to prevent a large amount of lubricating oil from being carried away due to airflow disturbance.

Description

Technical Field

[0001] The present invention particularly relates to a drive assembly cooling structure and a scroll compressor. Background Art

[0002] Scroll compressors are core components used in air conditioners, heat pumps, refrigeration and other equipment. Their operating conditions vary greatly with the operating environment. The typical operating range of a compressor (taking a heat pump as an example) is as follows: Figure 1 As shown in the figure, the evaporation and condensation ranges of the compressor are wide. As the evaporation temperature increases from low to high, the compressor suction mass flow rate increases; as the condensing temperature increases from low to high, the compressor load increases.

[0003] The compressor's drive assembly is cooled directly by the inhaled refrigerant, or the inhaled refrigerant cools the lubricating oil, which in turn cools the drive assembly. When the compressor operates under low evaporation and high condensation conditions, the low suction flow and heavy load can lead to insufficient cooling capacity for the drive assembly and a high risk of overheating and failure. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes a drive assembly cooling structure and a scroll compressor.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] A drive assembly cooling structure is provided inside a scroll compressor, comprising:

[0007] The suction baffle is set at the suction port of the scroll compressor and is used to separate the airflow entering the scroll compressor from the suction port into two parts. One part of the airflow directly enters between the fixed scroll and the orbiting scroll from the scroll suction port, and the other part of the airflow flows to the drive assembly of the scroll compressor;

[0008] The oil guide pipe is used to connect the compressor oil pool and the bearing assembly of the scroll compressor, and the oil guide pipe is arranged on the other side of the scroll compressor opposite to the suction port.

[0009] The present invention discloses a drive assembly cooling structure that incorporates an air intake baffle at the scroll compressor's intake port, directing a portion of the airflow toward the drive assembly (motor) to enhance cooling. Furthermore, an oil guide pipe guides the lubricating oil flow, preventing it from being carried away by turbulent airflow.

[0010] On the basis of the above technical solution, the following improvements can be made:

[0011] As a preferred solution, the air suction baffle includes:

[0012] A baffle body is provided with one or more overflow holes for directing airflow to the vortex air inlet;

[0013] The guide portion is provided on the baffle body, forms an angle α with the axial direction of the scroll compressor, and is inclined toward the location of the drive assembly. The guide portion is used to guide the airflow toward the drive assembly.

[0014] By adopting the above preferred solution, the air suction baffle has a simple structure and is easy to mass produce. The angle α can be between 0° and 90°, preferably between 15° and 60°.

[0015] As a preferred solution, a portion of the baffle body protrudes toward the location of the air inlet to form a baffle convex portion, and the position of the baffle convex portion corresponds to the position of the air inlet.

[0016] With the above preferred solution, the baffle protrusion can be formed by stamping, which simplifies the production process. The baffle protrusion makes the overall mechanical strength of the suction baffle higher and does not interfere with other components inside the scroll compressor.

[0017] As a preferred solution, the overflow hole is provided on the convex portion of the baffle.

[0018] With the above preferred solution, the overflow hole is provided on the convex portion of the baffle, which can better direct the airflow to the vortex air intake.

[0019] As a preferred solution, the guide portion is arranged at the tail of the baffle protrusion.

[0020] By adopting the above preferred solution, the air guide portion can guide the airflow to the drive assembly of the scroll compressor.

[0021] As a preferred solution, the oil guide pipe includes:

[0022] The upper conduit is L-shaped, the upper end of the upper conduit extends into the through hole of the bearing assembly, and the lower end is connected to the lower conduit;

[0023] The lower conduit has its upper end extending into the upper conduit and its lower end arranged in the compressor oil pool.

[0024] By adopting the above preferred solution, the oil guide pipe has a simple structure and adopts a sleeve design of upper and lower guide pipes, which is easy to install and repair.

[0025] As a preferred solution, the driving assembly includes: a rotor, a stator and a crankshaft. The stator is provided with a guide groove, and the downpipe is arranged in the guide groove.

[0026] With the above preferred solution, the downpipe is arranged in the guide groove, which facilitates the fixation of the downpipe.

[0027] As a preferred solution, a plurality of guide grooves extending along the length direction of the lower conduit are provided on the inner wall thereof, the plurality of guide grooves being evenly distributed along the circumference thereof with the axis of the lower conduit as the center, and a plurality of concave points being provided on the groove wall of each guide groove;

[0028] A plurality of oil guide holes are provided on the lower portion of the lower conduit, and at least one oil guide hole is provided between any two adjacent guide grooves.

[0029] In the preferred embodiment, multiple guide grooves and concave points are provided on the inner wall of the lower conduit. The guide grooves can effectively guide the lubricating oil and filter impurities in the lubricating oil during the guiding process. At the same time, the design of the upper and lower conduits is convenient for timely replacement of the lower conduit.

[0030] As a preferred solution, the depth of the guide groove gradually increases from top to bottom along the length direction of the downpipe.

[0031] The above preferred solution is adopted to better filter impurities in the lubricating oil without affecting the circulation rate of the oil circuit inside the scroll compressor.

[0032] The present invention further discloses a scroll compressor, comprising: a shell and various components arranged in the shell, and also comprising: a driving component cooling structure arranged in the shell.

[0033] The present invention discloses a scroll compressor that incorporates a drive assembly cooling structure within the scroll compressor housing, allowing airflow entering from the air intake to pass through the drive assembly (motor) and cool it. Furthermore, an additional oil guide pipe prevents airflow interference from affecting the oil circulation rate within the scroll compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of a typical compressor operating range.

[0035] Figure 2 A top view of a scroll compressor provided in an embodiment of the present invention.

[0036] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0037] Figure 4 A partial schematic diagram of a scroll compressor provided in an embodiment of the present invention.

[0038] Figure 5 This is a schematic structural diagram of an air suction baffle provided in an embodiment of the present invention.

[0039] Figure 6 This is a front view of the air suction baffle provided in an embodiment of the present invention.

[0040] Figure 7A schematic structural diagram of an oil guide pipe provided in an embodiment of the invention.

[0041] Figure 8 A top view of a stator according to an embodiment of the invention.

[0042] Figure 9 A transverse cross-sectional view of a downcomer according to an embodiment of the present invention.

[0043] Among them: 1-intake baffle, 11-baffle body, 12-overflow hole, 13-guide part, 14-baffle convex part, 2-intake port, 3-oil guide pipe, 31-upper guide pipe, 32-lower guide pipe, 321-guide groove, 322-concave point, 323-oil guide hole, 4-compressor oil pool, 5-bearing assembly, 51-through hole, 6-drive assembly, 61-rotor, 62-stator, 621-guide groove, 63-crankshaft, 7-housing, 8-vortex intake port, 9-static scroll, 10-orbiting scroll. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] In order to achieve the purpose of the present invention, a drive assembly cooling structure and some embodiments of a scroll compressor, such as Figure 2-3 As shown, a drive assembly cooling structure is provided inside a scroll compressor, comprising:

[0046] The air intake baffle 1 is provided at the air intake port 2 of the scroll compressor and is used to separate the air flow entering the scroll compressor from the air intake port 2 into two parts. One part of the air flow directly enters between the fixed scroll plate 9 and the orbiting scroll plate 10 from the scroll air intake port 8, and the other part of the air flow flows to the drive assembly 6 of the scroll compressor (the air flow direction is as shown in FIG. Figure 4 direction of the arrow shown);

[0047] The oil guide pipe 3 is used to connect the compressor oil pool 4 and the bearing assembly 5 of the scroll compressor, and the oil guide pipe 3 is arranged on the other side of the scroll compressor opposite to the suction port 2.

[0048] In conventional scroll compressors, refrigerant gas flows through the intake port to the scroll disk. This high-speed flow transfers heat to the compressor components and lubricating oil through heat conduction and convection within the compressor body. The heat transfer effect on the motor varies depending on the intake port's location, intake flow rate, and operating conditions. This application discloses a drive assembly cooling structure that incorporates an intake baffle 1 at the intake port 2 of a scroll compressor, directing a portion of the airflow toward the drive assembly 6 (motor) to enhance its cooling effect.

[0049] On the other hand, since the scroll compressor's oil pumping system draws oil from the bottom oil sump via a crankshaft oil pump and distributes it to the various lubricating surfaces through oil holes in the crankshaft, most of the lubricating oil is deposited in the oil groove of the main bearing and freely flows through the main bearing's oil leakage holes into the compressor's bottom oil sump. Since the addition of the intake baffle 1 adjusts the airflow direction toward the lower drive assembly 6 (motor), the airflow will affect the free return of the lubricating oil. A large amount of lubricating oil will be drawn into the scroll cavity by the intake air and discharged from the compressor, causing the compressor's oil pumping rate to increase and potentially causing oil shortage failure.

[0050] Therefore, after adding the air intake baffle 1, the present invention uses the oil guide pipe 3 to guide the flow of lubricating oil to prevent a large amount of lubricating oil from being carried away due to air flow disturbance, resulting in an increase in the compressor oil circulation rate and the compressor oil pump rate, which may cause oil shortage and failure.

[0051] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that the vertical center plane of the air suction baffle 1 coincides with the vertical center plane of the air suction port 2 .

[0052] According to the above preferred solution, the air suction baffle 1 and the air suction port 2 are symmetrically arranged.

[0053] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that, Figure 5-6 As shown, the air suction baffle 1 includes:

[0054] The baffle body 11 is provided with one or more overflow holes 12, and the overflow holes 12 are used to guide the airflow to the vortex air inlet 8;

[0055] The guide portion 13 is provided on the baffle body 11 . The guide portion 13 forms an angle α with the axial direction of the scroll compressor and is inclined toward the location of the drive assembly 6 . The guide portion 13 is used to guide the airflow toward the drive assembly 6 .

[0056] By adopting the above preferred solution, the air suction baffle 1 has a simple structure and is easy to mass produce. The angle α can be between 0° and 90°, preferably between 15° and 60°.

[0057] Furthermore, a portion of the baffle body 11 protrudes toward the position of the air inlet 2 to form a baffle protrusion 14 . The position of the baffle protrusion 14 corresponds to the position of the air inlet 2 .

[0058] With this preferred solution, the baffle protrusion 14 can be stamped, simplifying the production process. The baffle protrusion 14 enhances the overall mechanical strength of the suction baffle 1 and prevents interference with other components within the scroll compressor. Furthermore, the baffle protrusion 14 increases the airflow area and reduces pressure drop.

[0059] Furthermore, the overflow hole 12 is provided on the baffle protrusion 14 .

[0060] With the above preferred solution, the overflow hole 12 is provided on the baffle protrusion 14, so that the airflow can be better directed to the vortex air inlet 2. The overflow hole 12 should be provided as close to the vortex air inlet 8 as possible.

[0061] Furthermore, the air guide portion 13 is provided at the rear of the baffle protrusion 14 .

[0062] By adopting the above preferred solution, the air guide portion 13 can guide the airflow to the drive assembly 6 of the scroll compressor.

[0063] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that, Figure 7 As shown, the oil guide pipe 3 includes:

[0064] The upper conduit 31 is L-shaped, with the upper end of the upper conduit 31 extending into the through hole 51 of the bearing assembly 5 and the lower end connected to the lower conduit 32;

[0065] The lower conduit 32 has its upper end extending into the upper conduit 31 and its lower end disposed around or inside the compressor oil pool 4 .

[0066] By adopting the above preferred solution, the oil guide pipe 3 has a simple structure and adopts a sleeve-arranged design of the upper and lower guide pipes 32 , which is convenient for installation and maintenance.

[0067] like Figure 8 As shown, the driving assembly 6 further includes: a rotor 61 , a stator 62 and a crankshaft 63 . The stator 62 is provided with a guide groove 621 , and the downpipe 32 is arranged in the guide groove 621 .

[0068] With the above preferred solution, the downpipe 32 is disposed in the guide groove 621, which facilitates the fixation of the downpipe 32. Of course, in other embodiments, the stator 62 may not have the guide groove 621, and the downpipe 32 may not be fixed to the stator 62.

[0069] like Figure 9 As shown, further, a plurality of guide grooves 321 extending along the length direction of the lower conduit 32 are provided on the inner wall thereof. The plurality of guide grooves 321 are evenly distributed along the circumference thereof with the axis of the lower conduit 32 as the center, and a plurality of concave points 322 are provided on the groove wall of each guide groove 321.

[0070] A plurality of oil guide holes 323 are provided on the lower portion of the lower conduit 32 , and at least one oil guide hole 323 is provided between any two adjacent guide grooves 321 .

[0071] In the preferred embodiment described above, multiple guide grooves 321 and concave points 322 are provided on the inner wall of the lower conduit 32. The guide grooves 321 effectively guide the lubricating oil and filter impurities in the lubricating oil during the guiding process. Furthermore, the sleeve-type design of the upper and lower conduits 32 facilitates the timely replacement of the lower conduit 32.

[0072] Furthermore, the depth of the guide groove 321 gradually increases from top to bottom along the length direction of the downpipe 32 .

[0073] The above preferred solution is adopted to better filter impurities in the lubricating oil without affecting the circulation rate of the oil circuit inside the scroll compressor.

[0074] The above multiple implementations can be implemented in parallel.

[0075] The present invention further discloses a scroll compressor, comprising: a housing 7 and various components arranged in the housing 7 , and further comprising: a driving component cooling structure arranged in the housing 7 .

[0076] The present invention discloses a scroll compressor having a drive assembly cooling structure added to the scroll compressor housing 7. This allows airflow entering through the air intake 2 to pass through the drive assembly 6 (motor), thereby cooling the motor. Furthermore, an additional oil guide pipe 3 prevents airflow interference from affecting the circulation rate of the scroll compressor's internal oil circuit.

[0077] Regarding the preferred embodiments of the present invention, it should be pointed out that a person skilled in the art can make several variations and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A drive assembly cooling structure, arranged inside a scroll compressor, characterized in that: include: An air intake baffle is provided at the air intake of the scroll compressor and is used to separate the airflow entering the scroll compressor from the air intake into two parts, one part of the airflow directly enters between the fixed scroll and the orbiting scroll from the scroll air intake, and the other part of the airflow flows to the drive assembly of the scroll compressor; an oil guide pipe, the oil guide pipe being used to connect the compressor oil pool and the bearing assembly of the scroll compressor, and the oil guide pipe being arranged on the other side of the scroll compressor opposite to the air intake; The oil guide pipe comprises: An upper conduit, the upper conduit being L-shaped, the upper end of the upper conduit extending into the through hole of the bearing assembly, and the lower end of the upper conduit connected to the lower conduit; a lower conduit, the upper end of which extends into the upper conduit and the lower end of which is disposed in the compressor oil pool; A plurality of guide grooves extending along the length direction are provided on the inner wall of the downcomer, and the plurality of guide grooves are evenly distributed along the circumference thereof with the axis of the downcomer as the center, and a plurality of concave points are provided on the groove wall of each guide groove; a plurality of oil guide holes are provided on the lower part of the downcomer, and at least one oil guide hole is provided between any two adjacent guide grooves.

2. The drive assembly cooling structure according to claim 1, characterized in that: The air suction baffle comprises: a baffle body, wherein one or more overflow holes are provided on the baffle body, and the overflow holes are used to guide the airflow to the vortex air intake; The guide portion is provided on the baffle body, forms an angle α with the axial direction of the scroll compressor, and is inclined toward the location of the drive assembly, and is used to guide the airflow toward the drive assembly.

3. The drive assembly cooling structure according to claim 2, characterized in that: A portion of the baffle body protrudes toward the position of the air inlet to form a baffle convex portion, and the position of the baffle convex portion corresponds to the position of the air inlet.

4. The drive assembly cooling structure according to claim 3, characterized in that: The overflow hole is arranged on the blocking piece protrusion.

5. The drive assembly cooling structure according to claim 4, characterized in that: The guide portion is arranged at the tail of the baffle protrusion.

6. The drive assembly cooling structure according to claim 1, characterized in that: The driving assembly comprises a rotor, a stator and a crankshaft. The stator is provided with a guide groove, and the downpipe is arranged in the guide groove.

7. The drive assembly cooling structure according to claim 1, characterized in that: The depth of the guide groove gradually increases from top to bottom along the length direction of the downpipe.

8. Scroll compressor, including: The shell and the components arranged in the shell are characterized in that they also include: a drive component cooling structure according to any one of claims 1 to 7 arranged in the shell.

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