Scroll compressor

Abstract

The application provides a scroll compressor, which comprises a shell with a suction port and a discharge port, a scroll disc assembly, a motor assembly and an oil pumping assembly arranged in the shell, and the scroll disc assembly is located between the suction port and the discharge port; the motor assembly is provided with a motor support on the outer periphery, and a baffle is arranged on the side of the motor assembly close to the oil pumping assembly; the motor support is connected to the side of the suction port close to the scroll disc assembly, and the baffle is connected to the side of the suction port away from the scroll disc assembly, so as to form a shunt channel communicated with the suction port between the shell, the motor support and the baffle. Thus, the motor assembly can be sufficiently cooled and radiated, the efficiency and reliability of the motor assembly are improved, the power of the motor assembly and the displacement of the compressor are increased, and the stability of the liquid level of the oil pool is improved.

Description

Technical Field

[0001] This application relates to the field of compressor technology, specifically to a scroll compressor. Background Technology

[0002] The fluid region of a scroll compressor is divided into a high-pressure chamber and a low-pressure chamber based on pressure. The high-pressure chamber is located on the side of the scroll assembly closer to the exhaust port, while the low-pressure chamber is located on the side closer to the intake port. The low-pressure chamber houses the motor, crankshaft, and oil supply path. As the gas enters the low-pressure chamber, it experiences numerous vortices as it flows over the surfaces of these components, resulting in significant fluctuations in the oil level in the bottom oil sump, which affects system stability. Furthermore, less gas passes through the gaps around the motor, leading to insufficient cooling efficiency and failing to meet the heat dissipation requirements of the high-power motor. Utility Model Content

[0003] In view of this, this application provides a scroll compressor that can improve the heat dissipation efficiency of the motor assembly and improve the stability of the oil level in the oil sump.

[0004] To achieve the above objectives, this application provides the following technical solution: A scroll compressor includes a housing having an intake port and an exhaust port, and a scroll plate assembly, a motor assembly and an oil pump assembly disposed within the housing, the scroll plate assembly being located between the intake port and the exhaust port; A motor bracket is provided on the outer periphery of the motor assembly. Baffles are provided at intervals on the side of the motor assembly near the oil pump assembly. The motor bracket is connected to the side of the air intake near the scroll plate assembly. The baffles are connected to the side of the air intake away from the scroll plate assembly, so as to form a diversion channel communicating with the air intake between the outer shell, the motor bracket and the baffles.

[0005] Optionally, the motor bracket has a cylindrical portion sleeved on the outer periphery of the motor assembly, and an outer edge portion surrounding the outer periphery of the cylindrical portion, the air intake facing the cylindrical portion, and the outer edge portion connected to the side of the air intake near the scroll plate assembly.

[0006] Optionally, a diversion hole is formed on the outer edge to divert the gas from the intake port toward the vortex disk assembly.

[0007] Optionally, the diversion holes are configured in multiple ways and are symmetrically arranged relative to the first plane; the first plane is a plane passing through the central axis of the air intake and the central axis of the motor assembly.

[0008] Optionally, the air inlet of the scroll disk assembly is symmetrically arranged with respect to the first plane.

[0009] Optionally, the diversion holes are configured as a plurality of holes and are evenly arranged along the circumference of the motor assembly.

[0010] Optionally, the flow area of ​​the diversion hole is 1-1.3 times the flow area of ​​the intake port.

[0011] Optionally, the outer edge is disposed at one end of the cylindrical portion near the scroll disk assembly.

[0012] Optionally, the baffle has a through hole in the middle, and the through hole has an annular protrusion on the side near the motor assembly to form the diversion channel between the annular protrusion and the housing.

[0013] Optionally, the motor bracket and the baffle are provided with clearance grooves at the same circumferential position to allow the oil return component connected to the housing to be embedded.

[0014] The scroll compressor provided in this application, due to the formation of a diversion channel between the casing, motor bracket, and baffle that communicates with the intake port, allows gas entering through the intake port to be diverted to the side of the motor assembly near the baffle. After being blocked by the baffle, the gas flows through the internal gaps of the motor assembly, achieving sufficient cooling and heat dissipation, thereby improving the efficiency and reliability of the motor assembly and facilitating increased power of the motor assembly and compressor displacement. Furthermore, the baffle, positioned between the motor assembly and the oil pump assembly, prevents gas from impacting the oil surface in the oil sump where the oil pump assembly is located, and prevents disturbance of the oil surface during rotor rotation of the motor assembly, thus improving the stability of the oil surface and the operational stability of the compressor. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 A cross-sectional view of a scroll compressor shown for some embodiments of this application.

[0017] Figure 2 A perspective view of a scroll compressor shown for some embodiments of this application (partial housing omitted).

[0018] Figure 3 This is a perspective view of a motor bracket shown for some embodiments of this application.

[0019] Figure 4 The image shows a top view of a motor bracket for some embodiments of this application.

[0020] Figure 5 A perspective view of a baffle shown for some embodiments of this application.

[0021] Figure 6 A top view of a baffle shown for some embodiments of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Outer shell; 11. Inlet; 12. Outlet; 2. Scroll plate assembly; 3. Motor assembly; 4. Oil pump assembly; 5. Oil sump; 6. Motor bracket; 61. Cylinder; 62. Outer edge; 63. Diverter hole; 7. Baffle; 71. Through hole; 72. Annular flange; 8. Oil return component; 9. Clearance groove; 10. Drive shaft. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] like Figures 1-6 As shown, this application provides a scroll compressor, including a housing 1, a scroll plate assembly 2, a motor assembly 3, and an oil pump assembly 4. The housing 1 is provided with an intake port 11 and an exhaust port 12. The scroll plate assembly 2, the motor assembly 3, and the oil pump assembly 4 are all disposed inside the housing 1 and arranged sequentially along the axial direction of the housing 1, that is, the motor assembly 3 is located between the scroll plate assembly 2 and the oil pump assembly 4. The three are connected by a drive shaft 10. The motor assembly 3 drives the drive shaft 10 to rotate, which can cause the oil pump assembly 4 to pump oil toward the scroll plate assembly 2, and can cause the scroll plate assembly 2 to compress the gas, so that the low-pressure gas entering from the intake port 11 is converted into high-pressure gas discharged from the exhaust port 12.

[0025] Here, the scroll plate assembly 2 is positioned between the intake port 11 and the exhaust port 12. The scroll plate assembly 2 has a fixed scroll plate and a moving scroll plate that mesh with each other. The fixed scroll plate is fixed, and the moving scroll plate rotates eccentrically under the drive of the motor assembly 3. During operation, the gas entering through the intake port 11 enters the crescent-shaped closed cavity formed between the fixed scroll plate and the moving scroll plate through the intake port at the outer edge of the scroll. As the moving scroll plate continues to revolve, the volume of the closed cavity periodically decreases towards the center, and the gas is gradually compressed. When the closed cavity moves to the center position, the volume is at its minimum, and the high-pressure gas is discharged from the center outlet and finally discharged from the exhaust port 12.

[0026] A motor bracket 6 is provided on the outer periphery of the motor assembly 3. The motor bracket 6 is fitted around the outer periphery of the motor assembly 3 and connected to the outer shell 1 to fix the motor assembly 3 to the outer shell 1. A baffle 7 is provided between the motor assembly 3 and the oil pump assembly 4. A gap is left between the baffle 7 and the motor assembly 3. The middle part of the baffle 7 is fitted around the outer periphery of the drive shaft 10, and the edge of the baffle 7 is connected to the outer shell 1, thereby separating the motor assembly 3 and the oil pump assembly 4 into different chambers through the baffle 7. The motor bracket 6 is connected to the side of the air intake 11 near the scroll plate assembly 2, and the baffle 7 is connected to the side of the air intake 11 near the oil pump assembly 4, so that the air intake 11 is located in the area between the motor bracket 6 and the baffle 7, thereby forming a diversion channel between the motor bracket 6, the outer shell 1, and the baffle 7, and the diversion channel is connected to the air intake 11.

[0027] With this configuration, due to the design of the diversion channel, the gas entering through the intake port 11 can be diverted to the side of the motor assembly 3 near the baffle 7. After being blocked by the baffle 7, the gas flows through the internal gaps of the motor assembly 3, achieving sufficient cooling and heat dissipation, thereby improving the efficiency and reliability of the motor assembly 3, and facilitating the increase of the power of the motor assembly 3 and the displacement of the compressor. Moreover, the baffle 7, positioned between the motor assembly 3 and the oil pump assembly 4, prevents gas from impacting the surface of the oil sump 5 where the oil pump assembly 4 is located, and prevents the rotor of the motor assembly 3 from disturbing the surface of the oil sump 5, thereby improving the stability of the oil surface in the oil sump 5 and the operational stability of the compressor.

[0028] It should be noted that the motor assembly 3 includes a stator and a rotor. The stator is fixed relative to the motor bracket 6, and the rotor is connected to the drive shaft 10. The rotation of the rotor relative to the stator drives the drive shaft 10 to rotate relative to the housing 1. There is a gap between the rotor and the stator, which allows gas to flow from one end of the motor assembly 3 to the other, forming ventilation and heat dissipation for the motor assembly 3.

[0029] In this design, the motor bracket 6 has a cylindrical portion 61 and an outer edge portion 62. The outer edge portion 62 surrounds the outer periphery of the cylindrical portion 61 and protrudes from the outer side wall of the cylindrical portion 61. The cylindrical portion 61 is fitted around the outer periphery of the motor assembly 3, and the outer edge portion 62 is connected to the inner wall of the outer casing 1, creating a gap between the cylindrical portion 61 and the outer casing 1, thus forming a partial flow-diverting channel as described above between the cylindrical portion 61, the outer edge portion 62, and the outer casing 1. Furthermore, the outer edge portion 62 is located on the side of the intake port 11 near the scroll plate assembly 2, and the cylindrical portion 61 is aligned with the intake port 11 so that the intake port 11 faces the cylindrical portion 61 for air intake. The guiding effect of the cylindrical portion 61 and the outer edge portion 62 reduces vortices generated by direct gas impact on components such as the motor assembly 3, improving the stability of the air path within the low-pressure chamber. Thus, the design structure of this motor bracket 6 is reliable, the manufacturing process is simple, the stability is good, and the cost is low. Here, the outer peripheral surface of the cylindrical portion 61 is set as a smooth arc surface.

[0030] It is understood that the motor bracket 6 can be an inverted L-shaped structure, having mutually perpendicular vertical and horizontal portions. In combination, the vertical portion constitutes the aforementioned cylindrical portion 61, and the horizontal portion constitutes the aforementioned outer edge portion 62. The vertical portion extends vertically (i.e., along the axial direction of the motor assembly 3) and is fitted around the outer periphery of the motor assembly 3; that is, the inner wall of the vertical portion is interference-fitted with the motor assembly 3, and a gap is formed between the outer wall of the vertical portion and the outer casing 1. The horizontal portion is located above the vertical portion and extends horizontally (i.e., radially towards the motor assembly 3). The horizontal portion protrudes relative to the outer periphery of the vertical portion, so that the outer wall of the horizontal portion is interference-fitted with the inner wall of the outer casing 1, thereby assembling the motor assembly 3 within the outer casing 1 via the motor bracket 6.

[0031] The outer edge 62 is connected to the end of the cylinder 61 near the scroll plate assembly 2. When the distance between the motor assembly 3 and the scroll plate assembly 2 is constant, the air intake 11 can be closer to the scroll plate assembly 2, thereby reducing the gas flow path directly to the scroll plate assembly 2, which is beneficial to reducing working energy consumption.

[0032] like Figure 3-4 As shown, a diversion hole 63 is formed on the outer edge 62. This diversion hole 63 can be formed by the motor bracket 6 and the outer casing 1 (i.e., a slot is cut on the edge of the outer edge 62 near the outer casing 1), or it can be formed by the motor bracket 6 alone (i.e., a hole is cut on the outer edge 62). During operation, the gas entering the outer casing 1 from the intake port 11 is divided into two parts. One part flows through the diversion channel to the side of the motor assembly 3 away from the scroll plate assembly 2, and then flows through the internal gaps of the motor assembly 3 to the scroll plate assembly 2. The other part flows directly to the scroll plate assembly 2 through the diversion hole 63. In this way, the gas from the intake port 11 is diverted through the diversion hole 63 and the diversion channel. The proportion of gas used for heat dissipation of the motor assembly 3 can be adjusted during the design phase, thereby allowing for a reasonable design for motor assemblies 3 with different power ratings, taking into account both the heat dissipation effect of the motor assembly 3 and the energy consumption of the compressor.

[0033] In some preferred embodiments, multiple diversion holes 63 are provided. For example, the number of diversion holes 63 is three, four or five. The multiple diversion holes 63 are symmetrically arranged with respect to the first plane. Here, the first plane is the plane passing through the central axis of the intake port 11 and the central axis of the motor assembly 3, so that the gas from the intake port 11 can be evenly diverted to the multiple diversion holes 63, ensuring the force balance of the diversion holes 63, reducing airflow vortices, and improving airflow stability.

[0034] When multiple diversion holes 63 are provided, the multiple diversion holes 63 are evenly arranged along the circumference of the motor assembly 3. In this way, when the gas passes through the diversion holes 63, the force on different circumferential positions of the outer edge 62 is consistent, which can improve the stability of the motor bracket 6 installation.

[0035] In addition, the vortex disk assembly 2 is provided with multiple air inlets, which are symmetrically arranged with respect to the first plane mentioned above, which can also improve the stability of the airflow in the flow path.

[0036] The flow area of ​​the diversion orifice 63 is 1-1.3 times that of the intake port 11. By reasonably adjusting the ratio of the flow areas of the diversion orifice 63 and the intake port 11, the proportion of gas used for heat dissipation of the motor assembly 3 can be adjusted, thereby allowing for a reasonable design for motor assemblies 3 with different power ratings, taking into account both the heat dissipation effect of the motor assembly 3 and the energy consumption of the compressor. Here, the flow area of ​​the diversion orifice 63 is the sum of the flow areas of all the diversion orifices 63.

[0037] In some embodiments, the motor assembly 3 and the oil pump assembly 4 are connected by a drive shaft 10. A through hole 71 is provided in the center of the baffle 7 for the drive shaft 10 to pass through. A gap is left between the through hole 71 and the drive shaft 10 to prevent the baffle 7 from affecting the rotation of the drive shaft 10. An annular flange 72 is provided around the side of the through hole 71 near the motor assembly 3, so that the annular flange 72 fits around the outer periphery of the drive shaft 10. Thus, the design of the annular flange 72 maintains a gap between the motor assembly 3 and the baffle 7, while also guiding the gas. Specifically, the area between the annular flange 72 and the outer casing 1 forms part of the aforementioned diversion channel, thereby preventing gas from passing through the gap between the through hole 71 and the drive shaft 10 and reducing disturbance to the liquid surface of the oil sump 5.

[0038] An oil return component 8 is connected inside the outer casing 1. The oil return component 8 and the outer casing 1 form an oil return channel for returning the oil from the vortex disk assembly 2 to the oil sump 5. Both the outer edge 62 of the motor bracket 6 and the edge of the baffle 7 are provided with clearance grooves 9. The clearance grooves 9 on the motor bracket 6 and the baffle 7 are located on the same circumferential position of the motor assembly 3, so that the oil return component 8 can pass through the motor bracket 6 and the baffle 7 sequentially, achieving smooth oil return.

[0039] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0040] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0041] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0042] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0043] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0044] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A scroll compressor, characterized in that, It includes a housing with an air intake and an exhaust port, and a scroll plate assembly, a motor assembly and an oil pump assembly disposed within the housing, the scroll plate assembly being located between the air intake and the exhaust port; A motor bracket is provided on the outer periphery of the motor assembly. Baffles are provided at intervals on the side of the motor assembly near the oil pump assembly. The motor bracket is connected to the side of the air intake near the scroll plate assembly. The baffles are connected to the side of the air intake away from the scroll plate assembly, so as to form a diversion channel communicating with the air intake between the outer shell, the motor bracket and the baffles.

2. The scroll compressor according to claim 1, characterized in that, The motor bracket has a cylindrical portion sleeved on the outer periphery of the motor assembly, and an outer edge portion surrounding the outer periphery of the cylindrical portion. The air intake faces the cylindrical portion, and the outer edge portion is connected to the side of the air intake near the scroll plate assembly.

3. The scroll compressor according to claim 2, characterized in that, A flow divider hole is formed on the outer edge to divert the gas from the intake port toward the vortex disk assembly.

4. The scroll compressor according to claim 3, characterized in that, The diversion holes are configured in multiple ways and are symmetrically arranged relative to the first plane; the first plane is a plane passing through the central axis of the air intake and the central axis of the motor assembly.

5. The scroll compressor according to claim 4, characterized in that, The air inlet of the vortex disk assembly is symmetrically arranged with respect to the first plane.

6. The scroll compressor according to claim 3, characterized in that, The diversion holes are configured as multiple and are evenly arranged along the circumference of the motor assembly.

7. The scroll compressor according to claim 3, characterized in that, The flow area of ​​the diversion hole is 1-1.3 times that of the flow area of ​​the intake port.

8. The scroll compressor according to claim 2, characterized in that, The outer edge is located at one end of the cylindrical portion near the scroll disk assembly.

9. The scroll compressor according to claim 1, characterized in that, The baffle has a through hole in the middle, and an annular protrusion is provided on the side of the through hole near the motor assembly to form the flow diversion channel between the annular protrusion and the housing.

10. The scroll compressor according to claim 1, characterized in that, The motor bracket and the baffle are provided with clearance grooves at the same circumferential position to allow the oil return component connected to the housing to be embedded.

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