Scroll compressor and refrigeration apparatus

Abstract

The application provides a scroll compressor and a refrigeration device, and belongs to the technical field of compressors. The compressor comprises a shell, a cover assembly, a pump body assembly and a motor assembly, a first cavity is formed between the cover assembly and the pump body assembly, and a second cavity is formed between the motor assembly and the pump body assembly; the first cavity comprises a first gas return cavity and a first gas discharge cavity, an exhaust port is arranged on the pump body assembly, and the exhaust port is communicated with the first gas return cavity; a downward flow structure and an upward flow structure, the intake end of the downward flow structure is communicated with the first gas return cavity, and the exhaust end is communicated with the second cavity; the intake end of the upward flow structure is communicated with the second cavity, and the exhaust end is communicated with the first gas discharge cavity; and an exhaust pipe, wherein the gas flowing into the first gas discharge cavity through the upward flow groove is discharged to the outside of the compressor through the exhaust pipe. The compressor in the application can form a stronger oil throwing effect, reduce the oil content in the exhaust of the compressor, and improve the heat exchange performance of the system.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to a scroll compressor and refrigeration equipment. Background Technology

[0002] Scroll compressors are widely used in refrigeration equipment due to their high volumetric efficiency and high energy efficiency ratio. However, when scroll compressors operate at high frequencies, the oil discharge increases. As the oil discharge of the compressor increases while the oil return of the system remains unchanged, it is easy to cause oil shortage and wear of the compressor. In addition, excess lubricating oil enters the system with the exhaust, reducing the system's heat exchange efficiency. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this invention proposes a scroll compressor and refrigeration equipment.

[0004] The first aspect of this invention provides a scroll compressor, comprising:

[0005] The housing has a cover assembly, a pump assembly, and a motor assembly arranged sequentially along the height direction of the housing. The cover assembly is located on one side of the pump assembly along the axial direction and forms a first cavity with the pump assembly. The motor assembly is located on the other side of the pump assembly along the axial direction and forms a second cavity with the pump assembly. The height direction of the housing is parallel to the axial direction of the pump assembly.

[0006] The first cavity includes a first return gas cavity and a first exhaust gas cavity that are isolated from each other. The pump body assembly is provided with an exhaust port, which is connected to the first return gas cavity.

[0007] The flow structure includes a downward flow structure and an upward flow structure. The downward flow structure has an air inlet and an air outlet. The air inlet of the downward flow structure is connected to the first return air chamber and the air outlet is connected to the second chamber. The upward flow structure has an air inlet and an air outlet. The air inlet of the upward flow structure is connected to the second chamber and the air outlet is connected to the first exhaust chamber.

[0008] Gas flowing into the first exhaust chamber through the exhaust pipe via the upward flow structure is discharged to the outside of the compressor.

[0009] In the above technical solution, the downward flow structure and the upward flow structure include a downward flow groove and an upward flow groove provided on the pump body assembly;

[0010] The inlet end of the downward flow channel is connected to the first return air chamber and the outlet end is connected to the second chamber. The inlet end of the upward flow channel is connected to the second chamber and the outlet end is connected to the first exhaust chamber.

[0011] In the above technical solution, the pump body assembly includes a moving scroll plate and a stationary scroll plate that mesh with each other, as well as an upper bracket for supporting the stationary scroll plate.

[0012] The downward flow channel includes a first downward flow channel disposed on the stationary vortex disk and a second downward flow channel disposed on the upper support. The first downward flow channel and the second downward flow channel are connected, and the air inlet end of the first downward flow channel is connected to the first return air cavity, and the air outlet end of the second downward flow channel is connected to the second cavity.

[0013] The upward flow channel includes a first upward flow channel disposed on the upper support and a second upward flow channel disposed on the stationary vortex disk. The first upward flow channel and the second upward flow channel are connected, and the air inlet end of the first upward flow channel is connected to the second cavity, and the air outlet end of the second upward flow channel is connected to the first exhaust cavity.

[0014] In the above technical solution, the first downward flow groove and the second upward flow groove are notched grooves provided on the outer peripheral wall of the stationary vortex disk, wherein the notched positions of the first downward flow groove and the second upward flow groove are set to fit against the inner wall surface of the housing.

[0015] The first upward flow groove and the second downward flow groove are notches provided on the outer peripheral wall of the upper support, wherein the notches of the first upward flow groove and the second downward flow groove are set to fit against the inner wall surface of the housing.

[0016] In the above technical solution, at least one set of upward flow channels and / or at least one set of downward flow channels are provided.

[0017] In the above technical solution, the motor assembly includes a motor and a crankshaft connected to the output end of the motor. A balance cover assembly sleeved on the outside of the crankshaft is provided in the second cavity, and the crankshaft can drive the balance cover assembly to rotate.

[0018] In the rotation direction of the balance cover assembly, an angle α is formed between the exhaust end of the downward flow structure and the intake end of the upward flow groove, ranging from 240° to 360°.

[0019] In the above technical solution, the flow area of ​​the upward flow structure is smaller than the flow area of ​​the exhaust pipe.

[0020] In the above technical solution, the flow area of ​​the downward flow structure is larger than that of the upward flow structure.

[0021] In the above technical solution, the volume of the first return gas cavity is larger than the volume of the first exhaust gas cavity.

[0022] In the above technical solution, the cover assembly includes an inner cover and an outer cover that covers the outer surface of the inner cover.

[0023] A first return air chamber and a first exhaust air chamber are formed between the inner cover and the pump body assembly;

[0024] A third cavity is formed between the outer cover and the inner cover;

[0025] The third chamber is connected to the first exhaust chamber and the exhaust pipe. The gas that is discharged into the third chamber through the first exhaust chamber is discharged to the outside of the compressor through the exhaust pipe.

[0026] In the above technical solution, a partition structure is provided on the inner surface of the inner cover. The partition structure surrounds the inner circumferential surface of the inner cover to divide the inner cover into a first return air chamber and a first exhaust air chamber.

[0027] In the above technical solution, the static vortex disk is provided with a static disk air intake port, a static disk halogen-enhancing air supply port, and an exhaust port;

[0028] The outer cover has a first hole and a second hole, and the inner cover has a third hole corresponding to the first hole and a fourth hole corresponding to the second hole;

[0029] The compressor also includes a static plate suction pipe and a static plate halogen boosting and replenishing pipe. The static plate suction pipe passes through the first hole and the third hole in sequence to connect to the static plate suction port, and the static plate halogen boosting and replenishing pipe passes through the second hole and the fourth hole in sequence to connect to the static plate halogen boosting and replenishing port.

[0030] The compressor also includes a silencer, which is located on the surface of the stationary scroll plate. The high-pressure gas discharged through the exhaust port is silenced by the silencer and then discharged into the first return gas chamber.

[0031] A second aspect of the present invention provides a refrigeration device comprising the scroll compressor described above.

[0032] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0033] I. In this embodiment of the invention, a novel exhaust path is provided. Under this exhaust path, the exhaust can form a stronger rotating oil-throwing effect in the second cavity (i.e., the upper cavity of the motor) formed between the pump body assembly and the motor assembly, thereby reducing the oil content in the compressor exhaust, reducing the amount of lubricating oil entering the system, and improving the system's heat exchange performance. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0035] Figure 1 This is a schematic diagram of the first internal structure of the scroll compressor according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the second internal structure of an embodiment of the scroll compressor of the present invention;

[0037] Figure 3 This is a bottom view of the inner cover structure in an embodiment of the scroll compressor of the present invention;

[0038] Figure 4 This is a schematic diagram of the main structure of the inner cover in an embodiment of the scroll compressor of the present invention;

[0039] Figure 5 This is a schematic diagram of the main structure of the outer cover in an embodiment of the scroll compressor of the present invention;

[0040] Figure 6 This is a three-dimensional structural schematic diagram of the stationary scroll plate in an embodiment of the scroll compressor of the present invention;

[0041] Figure 7 This is a three-dimensional structural diagram of the upper support in an embodiment of the scroll compressor of the present invention;

[0042] Figure 8 This is a three-dimensional structural schematic diagram of the silencer in an embodiment of the scroll compressor of the present invention;

[0043] Wherein: 1-House; 2-Cover assembly; 21-Inner cover; 211-First return air chamber; 212-First exhaust chamber; 213-Third hole; 214-Fourth hole; 22-Outer cover; 221-First hole; 222-Second hole; 3-Pump assembly; 31-Moving scroll plate; 32-Stationary scroll plate; 321-First downward flow groove; 322-Second upward flow groove; 323-Stationary plate intake port; 324-Stationary plate enthalpy-increasing air supply port; 325-Exhaust port; 33-Upper bracket; 331-Second downward flow groove; 332-First upward flow groove; 4-Motor assembly; 41-Motor; 42-Crankshaft; 5-Exhaust pipe; 6-Second chamber; 7-Balance cover assembly; 8-Third chamber; 9-Separation structure; 100-Stationary plate intake pipe; 200-Stationary plate enthalpy-increasing air supply pipe; 300-Muffler; Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0045] Currently available scroll compressors experience increased oil discharge during high-frequency operation, while the system's oil return remains constant. This can easily lead to compressor wear due to oil shortage, and excess lubricating oil enters the system with the exhaust, reducing the system's heat exchange efficiency. This invention proposes a novel exhaust path structure. Under this path, the exhaust can create a stronger rotating oil-throwing effect within the second cavity (i.e., the upper cavity of the motor) formed between the pump assembly and the motor assembly, reducing the oil content in the compressor exhaust, decreasing the amount of lubricating oil entering the system, and improving the system's heat exchange performance.

[0046] The following is in conjunction with the appendix Figure 1-8 The technical solution of this embodiment is described in detail. Unless otherwise specified, the following implementation methods and embodiments can be combined with each other.

[0047] Example

[0048] like Figure 1 and Figure 3 As shown, the first aspect of this embodiment proposes a scroll compressor. Preferably, the compressor in this embodiment is a vertical scroll compressor, which includes:

[0049] The housing 1 has a cover assembly 2, a pump assembly 3 and a motor assembly 4 arranged sequentially along the height direction of the housing 1 inside the housing 1. The cover assembly 2 is located on one side of the pump assembly 3 along the axial direction and forms a first cavity with the pump assembly 3. The motor assembly 4 is located on the other side of the pump assembly 3 along the axial direction and forms a second cavity 6 with the pump assembly. The height direction of the housing 1 is parallel to the axial direction of the pump assembly 3.

[0050] The first cavity includes a first return gas cavity 211 and a first exhaust gas cavity 212 that are isolated from each other. The pump body assembly 3 is provided with an exhaust port 325, which is connected to the first return gas cavity 211.

[0051] The flow structure includes a downward flow structure and an upward flow structure. The downward flow structure has an air inlet and an air outlet. The air inlet of the downward flow structure is connected to the first return air chamber 211 and the air outlet is connected to the second chamber 6. The upward flow structure has an air inlet and an air outlet. The air inlet of the upward flow structure is connected to the second chamber 6 and the air outlet is connected to the first exhaust chamber 212.

[0052] The exhaust pipe 5 is connected to the first rising chamber 212, wherein the gas flowing into the first exhaust chamber 212 through the upward flow groove is discharged to the outside of the compressor through the exhaust pipe 5.

[0053] It should be noted that, in the embodiments of the present invention, the exhaust pipe 5 can be directly connected to the first exhaust cavity 212 or indirectly connected to the first exhaust cavity 212.

[0054] The scroll compressor in this embodiment of the invention provides a novel exhaust path. Under this exhaust path, the exhaust can form a stronger rotating oil-throwing effect in the second cavity 6 formed between the pump body assembly 3 and the motor assembly 4, i.e., the upper cavity of the motor, thereby reducing the oil content in the compressor exhaust, reducing the amount of lubricating oil entering the system, and improving the system's heat exchange performance.

[0055] like Figure 1 and Figure 3 As shown, the aforementioned downward flow structure and upward flow structure include a downward flow groove and an upward flow groove provided on the pump body assembly 3;

[0056] The inlet end of the downward flow channel is connected to the first return air chamber 211 and the outlet end is connected to the second chamber 6. The inlet end of the upward flow channel is connected to the second chamber 6 and the outlet end is connected to the first exhaust chamber 212.

[0057] Of course, in some embodiments not shown, the downward flow structure and upward flow structure mentioned above can also be connecting pipes disposed outside the housing. However, relatively speaking, it is preferable that the downward flow structure and upward flow structure mentioned above are upward flow grooves and downward flow grooves disposed on the pump body assembly 3, which provides better oil return effect for the compressor. The following uses a downward flow groove as an example of a downward flow structure and an upward flow groove as an example to specifically explain how the compressor exhausts gas in the embodiment of the present invention:

[0058] Specifically, the compressor exhaust first exits from the exhaust port 325 of the pump body assembly 3. When the exhaust exits from the exhaust port 325, it first enters the first return air cavity 211 formed between the cover assembly 2 and the pump body assembly 3. Then, it is discharged into the second cavity 6 (i.e., into the upper cavity of the motor) through the downward flow groove provided on the pump body assembly 3, and rotates and flows around in the upper cavity of the motor. Subsequently, the exhaust enters the first exhaust cavity 212 through the upward flow groove provided on the pump body assembly 3, and is discharged from the compressor through the exhaust pipe 5 connected to the first exhaust cavity 212.

[0059] Compared to existing scroll compressors, which directly install the exhaust pipe at the upper cavity of the motor for exhaust, the scroll compressor in this embodiment of the invention, by setting a downward flow groove connecting the first return gas cavity 211 and the second cavity, and setting an upward flow groove connecting the second cavity and the first exhaust cavity 212, allows the compressor exhaust to be fully rotated and splashed with oil in the upper cavity of the motor (i.e., the second cavity 6) after being discharged from the pump body assembly 3, thereby reducing the oil content of the compressor exhaust and improving system energy efficiency.

[0060] Specifically, such as Figure 1 and Figure 2As shown, the pump body assembly 3 includes a moving scroll plate 31 and a stationary scroll plate 32 that mesh with each other, as well as an upper bracket 33 for supporting the stationary scroll plate 32; wherein;

[0061] like Figure 6 and Figure 7 As shown, the downward flow channel includes a first downward flow channel 321 disposed on the stationary vortex disk 32 and a second downward flow channel 331 disposed on the upper support 33. The first downward flow channel 321 and the second downward flow channel 331 are connected, and the air inlet end of the first downward flow channel 321 is connected to the first return air cavity 211, and the exhaust end of the second downward flow channel 331 is connected to the second cavity 6.

[0062] The upward flow channel includes a first upward flow channel 332 disposed on the upper support 33 and a second upward flow channel 322 disposed on the stationary vortex disk 32. The first upward flow channel 332 and the second upward flow channel 322 are connected, and the air inlet end of the first upward flow channel 332 is connected to the second cavity 6, and the air outlet end of the second upward flow channel 322 is connected to the first exhaust cavity 212.

[0063] When the compressor exhaust gas is discharged from the exhaust port 325 of the stationary scroll plate 32, the discharged gas first enters the first return gas cavity 211, and then flows sequentially into the first downward flow groove 321 on the stationary scroll plate 32 and the second downward flow groove 331 on the upper support 33 into the second cavity 6 (i.e., the upper cavity of the motor), and rotates and flows around in the upper cavity of the motor. Subsequently, the exhaust gas sequentially enters the first exhaust cavity 212 through the first upward flow groove 332 on the upper support 33 and the second upward flow groove 322 on the stationary scroll plate 32, and is discharged to the outside of the compressor through the exhaust pipe 5 connected to the first exhaust cavity 212.

[0064] Furthermore, such as Figure 6 and Figure 7 As shown, the first downward flow groove 321 and the second upward flow groove 322 mentioned in the embodiment of the present invention are notches provided on the outer peripheral wall of the stationary vortex disk 32, wherein the notches of the first downward flow groove 321 and the second upward flow groove 322 are set to fit against the inner wall surface of the housing 1.

[0065] The first upward flow groove 332 and the second downward flow groove 331 mentioned in the embodiments of the present invention are also notches provided on the outer peripheral wall of the upper support 33, wherein the notches of the first upward flow groove 332 and the second downward flow groove 331 are fitted to the inner wall surface of the housing 1.

[0066] When the stationary scroll plate 32 and the upper bracket 33 are assembled into the housing 1 of the scroll compressor, the notch on the outer peripheral wall of the stationary scroll plate 32 and the inner wall of the housing 1 cooperate to form a first downward flow groove 321 and a second upward flow groove 322 with openings at both ends. At the same time, the notch on the outer peripheral wall of the upper bracket 33 and the inner wall of the housing 1 cooperate to form a first upward flow groove 332 and a second downward flow groove 331 with openings at both ends.

[0067] In this embodiment of the invention, by setting the downward flow groove on the outer peripheral wall of the static vortex disk 32 and the upper support 33, the high-pressure exhaust in the first return gas cavity 211 can be fully diffused in the first return gas cavity 211 before being discharged into the upper cavity of the motor, thus avoiding excessive pressure when the exhaust enters the downward flow groove, which would cause excessive vibration of the compressor.

[0068] In this embodiment of the invention, by setting the upward flow groove on the outer peripheral wall of the static vortex disk 32 and the upper support 33, the exhaust can be fully rotated and splashed with oil in the upper cavity of the motor {i.e. the second cavity 6} before being discharged from the upward flow groove, thereby improving the oil splashing effect of the exhaust in the upper cavity of the motor.

[0069] It is worth noting that at least one set of the upward flow channel mentioned above and / or at least one set of the downward flow channel mentioned above are provided.

[0070] Preferred, such as Figure 6 and Figure 7 As shown, in this embodiment of the invention, both the upward flow channel and the downward flow channel are provided in two sets.

[0071] It should be noted that a set of upward flow channels in an embodiment of the present invention includes a first upward flow channel disposed on the upper support 33 and a second upward flow channel disposed on the stationary vortex disk 32.

[0072] In any of the above embodiments, such as Figure 1 and Figure 2 As shown, the motor assembly 4 includes a motor 41 and a crankshaft 42 connected to the output end of the motor. A balance cover assembly 7 is provided in the second cavity 6 and sleeved on the outside of the crankshaft 42. The crankshaft 42 can drive the balance cover assembly 7 to rotate.

[0073] Among them, such as Figure 6 As shown, in the rotation direction of the balance cover assembly 7, an angle α is formed between the exhaust end of the downward flow channel and the intake end of the upward flow channel, ranging from 240° to 360°. Preferably, the angle α is 240°.

[0074] When the motor 41 drives the balance cover assembly 7 and the moving scroll plate 31 to rotate via the crankshaft 42, the balance cover assembly 7 rotates in the second cavity 6. When the balance cover assembly 7 rotates, it drives the gas in the second cavity 6 to rotate, thereby driving the gas in the second cavity 6 to move from the outlet position of the downward flow channel to the inlet position of the upward flow channel along the rotation direction of the balance cover assembly 7. Since the inlet position of the downward flow channel and the inlet position of the upward flow channel form an angle greater than 240°, the compressor exhaust path in this application has a longer motion path for rotational flow than the exhaust path design of a general compressor, thereby enhancing the rotational oil separation effect of the exhaust in the second cavity 6.

[0075] It should be noted that the balance shield assembly 7 mentioned in the embodiments of the present invention includes a balance shield and a balance block.

[0076] It should also be noted that when multiple sets of downward flow channels and upward flow channels are provided, the included angle α between each downward flow channel and each upward flow channel in the rotation direction of the balance cover assembly 7 is greater than 240°, so that no matter which downward flow channel the gas flows into the second cavity from, it can perform sufficient rotational oil separation in the second cavity 6.

[0077] Furthermore, in order to increase the oil-throwing time of the gas in the second cavity 6 and further improve the rotational oil separation effect, in this embodiment of the invention, the flow area of ​​the upward flow groove is set to be smaller than the flow area of ​​the exhaust pipe 5.

[0078] This slows down the exhaust velocity from the second cavity 6, resulting in a stronger flow effect of the exhaust along the balance block and balance cover within the second cavity 6, thereby further enhancing the rotational oil separation effect of the exhaust in the upper cavity of the motor {compared to the prior art where the exhaust pipes 5 are connected to each other in the second cavity 6}.

[0079] Furthermore, in some embodiments not shown, the flow area of ​​the downward flow channel can be set to be larger than that of the upward flow channel. This results in a larger gas flow rate entering the second cavity 6 and a smaller gas flow rate exiting the second cavity 6, allowing the gas to remain in the second cavity 6 for a longer period, thereby further improving the gas-oil separation effect within the second cavity 6.

[0080] In any of the above embodiments, such as Figure 3As shown, in order to avoid excessive impact of the gas discharged from the exhaust port 325 of the stationary scroll plate 32 on the cover assembly, the volume of the first return gas cavity 211 connected to the exhaust port of the stationary scroll plate 32 can be set to be relatively large, while the volume of the second exhaust cavity 212 connected to the second cavity 6 can be set to be relatively small. In this way, excessive exhaust pressure can be avoided from causing excessive impact on the cover assembly, thereby avoiding excessive vibration of the compressor during operation.

[0081] In any of the above embodiments, the cover assembly 2 mentioned above includes an inner cover 21 and an outer cover 22 covering the outer surface of the inner cover 21.

[0082] Specifically, a first return air cavity 211 and a first exhaust air cavity 212 are formed between the inner cover 21 and the pump body assembly 3;

[0083] A third cavity 8 is formed between the outer cover 22 and the inner cover 21;

[0084] The inlet end of the third cavity 8 is connected to the first exhaust cavity 212, and the exhaust end is connected to the exhaust pipe 5. The gas discharged into the third cavity 8 through the first exhaust cavity 212 is discharged to the outside of the compressor through the exhaust pipe 5. That is, when the cover assembly 2 includes an inner cover 21 and an outer cover 22, the exhaust pipe 5 is indirectly connected to the first exhaust cavity 212.

[0085] That is, the cover assembly 2 provided in the embodiment of the present invention consists of two covers that are closed together, and the inner cover 21 has two separate cavities {a first return cavity 211 and a first exhaust cavity 212}.

[0086] Of course, in some embodiments not shown, the inner cover 21 can also be configured in other ways. For example, the inner cover 21 can be configured as two separate inner covers, each inner cover forming a chamber to serve as the first return air chamber 211 and the first exhaust air chamber 212, respectively. The specific configuration of the inner cover 21 is not limited in the embodiments of the present invention.

[0087] Of course, relatively speaking, in the embodiment of the present invention, an integral inner cover 21 is preferred. Specifically, when the inner cover 21 is integrally set, a partition structure 9 is provided on the inner surface of the inner cover 21, wherein the partition structure 9 surrounds the inner circumferential surface of the inner cover 21 to divide the inner cover 21 into a first return air cavity 211 and a first exhaust air cavity 212.

[0088] In this embodiment of the invention, by making the inner cover 21 an integral piece, the manufacturing of the inner cover 21 can be facilitated, and the strength of the inner cover 21 can be improved, avoiding damage to the cover caused by the impact of high-pressure exhaust. At the same time, since the cover assembly 2 includes an inner cover stacked on the bottom and an outer cover stacked on the top, the impact of airflow on the outer cover can be reduced, thus reducing the vibration effect of the outer cover.

[0089] Furthermore, such as Figure 6 As shown, the stationary vortex disk 32 in this embodiment of the invention is provided with a stationary disk air intake port 323, a stationary disk hysteresis replenishment port 324 and an exhaust port 325.

[0090] like Figure 5 As shown, the outer cover 22 is provided with a first hole 221 and a second hole 222;

[0091] like Figure 3 and Figure 4 As shown, the inner cover 21 is provided with a third hole 213 corresponding to the first hole 221 and a fourth hole 214 corresponding to the second hole 222;

[0092] like Figure 1 and Figure 2 As shown, the compressor also includes a static plate suction pipe 100 and a static plate saturation replenishment pipe 200. The static plate suction pipe 100 passes through the first hole 221 and the third hole 213 in sequence to connect to the static plate suction port 323. The static plate saturation replenishment pipe 200 passes through the second hole 222 and the fourth hole 214 in sequence to connect to the static plate saturation replenishment port 324.

[0093] like Figure 8 As shown, the compressor also includes a silencer 300, which is located on the surface of the stationary scroll plate 32. The high-pressure gas discharged through the exhaust port 325 is silenced by the silencer and then discharged into the first return gas cavity 211.

[0094] To further understand the working principle of the compressor in the embodiments of the present invention, the following is combined with... Figures 1-8 The working principle of the compressor in the embodiments of the present invention will be explained in detail.

[0095] Before introducing the working principle of the compressor in the embodiments of the present invention, the structure and working principle of the existing compressor will first be explained:

[0096] In existing vertical scroll compressors, the exhaust pipe is installed in the upper chamber of the compressor motor, i.e., the second cavity location in this embodiment of the invention. The compressor exhaust enters the upper chamber of the motor through the upper bracket flow groove, rotates and throws oil along the crankshaft direction within the upper chamber, and then exits the compressor through the exhaust pipe. However, by directly setting the exhaust outlet in the upper chamber of the motor, and with the angle between the exhaust outlet and the upper bracket flow groove not exceeding 180 degrees, most of the exhaust in the upper chamber of the motor will not be fully rotated and thrown off the oil before exiting the compressor. This results in an increase in the oil content of the compressor exhaust, with excess lubricating oil entering the system and reducing system energy efficiency.

[0097] Based on this, an embodiment of the present invention proposes a method such as Figures 1-8 The scroll compressor shown adopts the above-described structure. Its working principle is as follows: When the compressor discharges gas, the exhaust gas first exits from the silencer 300 on the stationary scroll plate, enters the first return gas cavity 211 of the inner cover 3, and then flows into the downward flow groove of the stationary scroll plate 32 and the upper support 33. The exhaust gas is then discharged downwards through the downward flow groove into the upper cavity of the motor (i.e., the second cavity 6), where it rotates and flows around. Subsequently, the exhaust gas enters the first exhaust cavity 212 of the inner cover 21 through the upward flow groove; and then enters the third cavity 8 of the outer cover through the opening on the inner cover that connects to the outer cover. Finally, it exits the compressor through the exhaust pipe 5 connected to the third cavity 8. (The flow direction of the gas in the compressor is as follows...) Figure 1 , Figure 2 , Figure 6 and Figure 7 As indicated by the arrow in the image.

[0098] Specifically, according to the exhaust path provided in the embodiment of the present invention, when the exhaust enters the second cavity 6 (i.e., after the gas enters the upper cavity of the motor), because the angle between the downward flow groove and the upward flow groove exceeds 240 degrees, the exhaust has a longer path for rotational flow than in general designs, enhancing the rotational oil separation effect of the exhaust in the upper cavity of the motor; and the flow area of ​​the upward flow groove is smaller. The total flow area of ​​the upward flow groove should be smaller than the flow area S of the compressor exhaust pipe, and the exhaust speed discharged from the upper cavity of the motor is slower, so that the exhaust forms a stronger flow around the balance block and balance cover in the upper cavity of the motor, further enhancing the rotational oil separation effect of the exhaust in the upper cavity of the motor. The compressor structure provided in the embodiment of the present invention has an inner cover and an outer cover, reducing the impact of airflow on the outer cover and reducing the vibration effect of the outer cover of the compressor.

[0099] In summary, the scroll compressor provided in this embodiment of the invention, due to the aforementioned exhaust structure, enhances the rotational oil-throwing effect of the exhaust gas in the upper cavity of the motor, reduces the oil content in the compressor exhaust, and improves system energy efficiency. Especially when the compressor operates at high frequency, the exhaust path according to this invention can form a stronger rotating flow than during low-frequency operation, further enhancing the rotational oil-throwing effect of the exhaust gas in the upper cavity of the motor {because during high-frequency operation of the compressor, the corresponding rotational speed of the balance cover assembly 7 is also faster, thereby improving the rotational oil-throwing effect of the gas in the upper cavity of the motor}.

[0100] A second aspect of the present invention also provides a refrigeration device, which includes the scroll compressor mentioned above. Preferably, the refrigeration device mentioned in the embodiments of the present invention is an air conditioner.

[0101] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0102] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A scroll compressor, characterized in that, include: The housing (1) has a cover assembly (2), a pump assembly (3) and a motor assembly (4) arranged sequentially along the height direction of the housing (1). The cover assembly (2) is located on one side of the pump assembly (3) along the axial direction and forms a first cavity with the pump assembly (3). The motor assembly (4) is located on the other side of the pump assembly (3) along the axial direction and forms a second cavity (6) with the pump assembly. The height direction of the housing (1) is parallel to the axial direction of the pump assembly (3). The pump assembly (3) includes a moving scroll plate (31) and a stationary scroll plate (32) that mesh with each other, and an upper bracket (33) for supporting the stationary scroll plate (32). The first cavity includes a first return gas cavity (211) and a first exhaust gas cavity (212) that are isolated from each other. The pump body assembly (3) is provided with an exhaust port (325), which is connected to the first return gas cavity (211). The flow structure includes a downward flow structure and an upward flow structure. The downward flow structure has an air inlet and an air outlet. The air inlet of the downward flow structure is connected to the first return air chamber (211), and the air outlet is connected to the second chamber (6). The upward flow structure has an air inlet and an air outlet. The air inlet of the upward flow structure is connected to the second chamber (6), and the air outlet is connected to the first exhaust chamber (212). An exhaust pipe (5) is connected to the first exhaust chamber (212), wherein the gas flowing into the first exhaust chamber (212) through the upward flow structure is discharged to the outside of the compressor through the exhaust pipe (5); The downward flow structure and the upward flow structure include a downward flow groove and an upward flow groove provided on the pump body assembly (3); The downward flow channel includes a first downward flow channel (321) disposed on the stationary vortex disk (32) and a second downward flow channel (331) disposed on the upper support (33), and the first downward flow channel (321) and the second downward flow channel (331) are connected. The upward flow channel includes a first upward flow channel (332) disposed on the upper support (33) and a second upward flow channel (322) disposed on the stationary vortex disk (32), and the first upward flow channel (332) and the second upward flow channel (322) are connected.

2. The scroll compressor according to claim 1, characterized in that, The first downward flow groove (321) and the second upward flow groove (322) are notches provided on the outer peripheral wall of the stationary vortex disk (32), wherein the notches of the first downward flow groove (321) and the second upward flow groove (322) are provided in contact with the inner wall surface of the housing (1); The first upward flow groove (332) and the second downward flow groove (331) are notches provided on the outer peripheral wall of the upper support (33), wherein the notches of the first upward flow groove (332) and the second downward flow groove (331) are set to fit against the inner wall surface of the housing (1).

3. The scroll compressor according to claim 1, characterized in that, The upward flow channel is provided with at least one set and / or the downward flow channel is provided with at least one set.

4. The scroll compressor according to any one of claims 1-3, characterized in that, The motor assembly (4) includes a motor (41) and a crankshaft (42) connected to the output end of the motor (41). A balance cover assembly (7) is provided in the second cavity (6) and sleeved on the outside of the crankshaft (42). The crankshaft (42) can drive the balance cover assembly (7) to rotate. In the rotation direction of the balance cover assembly (7), an angle α is formed between the exhaust end of the downward flow structure and the intake end of the upward flow structure in the range of 240°-360°.

5. The scroll compressor according to claim 1, characterized in that, The flow area of ​​the upward flow structure is smaller than the flow area of ​​the exhaust pipe (5).

6. The scroll compressor according to claim 1, characterized in that, The flow area of ​​the downward flow structure is greater than the flow area of ​​the upward flow structure.

7. The scroll compressor according to any one of claims 1-3, characterized in that, The volume of the first return gas cavity (211) is greater than the volume of the first exhaust gas cavity (212).

8. The scroll compressor according to any one of claims 1-3, characterized in that, The cover assembly (2) includes an inner cover (21) and an outer cover (22) covering the outer surface of the inner cover (21). The inner cover (21) and the pump assembly (3) form the first return air cavity (211) and the first exhaust air cavity (212). A third cavity (8) is formed between the outer cover (22) and the inner cover (21); The inlet end of the third cavity (8) is connected to the first exhaust cavity (212), and the exhaust end is connected to the exhaust pipe (5). The gas discharged into the third cavity (8) through the first exhaust cavity (212) is discharged to the outside of the compressor through the exhaust pipe (5).

9. The scroll compressor according to claim 8, characterized in that, The inner surface of the inner cover (21) is provided with a partition structure (9), which surrounds the inner circumferential surface of the inner cover (21) to divide the inner cover (21) into the first return air cavity (211) and the first exhaust air cavity (212).

10. The scroll compressor according to claim 8, characterized in that, The stationary vortex disk (32) is provided with a stationary disk air intake port (323), a stationary disk halogen-enhancing air supply port (324), and an exhaust port (325). The outer cover (22) is provided with a first hole (221) and a second hole (222), and the inner cover (21) is provided with a third hole (213) corresponding to the first hole (221) and a fourth hole (214) corresponding to the second hole (222). The compressor also includes a static plate suction pipe (100) and a static plate anodic boosting and replenishing pipe (200). The static plate suction pipe (100) passes through the first hole (221) and the third hole (213) in sequence to connect to the static plate suction port (323). The static plate anodic boosting and replenishing pipe (200) passes through the second hole (222) and the fourth hole (214) in sequence to connect to the static plate anodic boosting and replenishing port (324). The compressor also includes a silencer (300), which is located on the surface of the stationary vortex disk (32). The high-pressure gas discharged through the exhaust port (325) is silenced by the silencer and then discharged into the first return gas cavity (211).

11. A refrigeration device, characterized in that, The scroll compressor includes any one of claims 1-10.

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