Scroll compressor and heat exchange equipment

Abstract

The application provides a scroll compressor and heat exchange equipment, wherein the scroll compressor comprises a shell, a support assembly, a dynamic scroll and a static scroll which are matched with each other. The shell has an oil storage cavity and a suction cavity; the support assembly has a gas passage; the support assembly, the dynamic scroll and the static scroll are arranged in the shell, a compression cavity is formed between the dynamic scroll and the static scroll, and the dynamic scroll is movably arranged relative to the support assembly; wherein the suction cavity is communicated with the compression cavity through the gas passage, and the height of the gas passage is higher than a limit preset height of an oil level in the oil storage cavity. The application solves the problem of unstable pump body lubricating oil suction in the prior art scroll compressor.

Description

Technical Field

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

[0002] In scroll compressors, lubricating oil plays a role in lubrication and sealing. When the lubricating oil content in the refrigerant is high, it affects the volumetric efficiency of the compressor, the heat exchange of the refrigeration system, and the power consumption. Therefore, it is desirable for the oil content of the circulating refrigerant to be as low as possible. However, an excessively low oil content can lead to serious leakage between the moving and stationary plates during compressor operation, especially for variable frequency compressors operating at low frequencies.

[0003] In a typical automotive horizontal scroll compressor, the housing low-pressure chamber is located on one side of the moving and stationary discs, while the front cover high-pressure chamber is located on the other side. Lubricating oil separated from the front cover high-pressure chamber returns to the housing low-pressure chamber via an oil passage. The lower side of the housing low-pressure chamber is an oil reservoir. Because the support frame typically has airflow holes within its circumference, the moving and stationary disc low-pressure chambers, formed by the outer perimeter of the moving disc and the inner wall of the stationary disc, are connected to the housing low-pressure chamber, thus filling the lower side of the moving and stationary disc low-pressure chambers with lubricating oil.

[0004] To address the leakage problem between the moving and stationary discs, the lubricating oil level in the low-pressure chamber typically needs to be within the suction port area below the moving and stationary discs. This allows some lubricating oil to be carried into the pump body composed of the moving and stationary discs during operation, providing lubrication and sealing, and reducing pump body leakage. However, controlling the oil level for pump body lubrication presents several problems:

[0005] 1. The lubricating oil level is difficult to control precisely within the suction port range, and the lubricating oil level in the low-pressure chamber of the compressor casing is not a flat plane during operation. In particular, the lubricating oil level will change when the operating conditions change, which will cause changes in the amount of lubricating oil sucked into the pump body, resulting in problems such as pump body leakage or high oil content.

[0006] 2. The lubricating oil in the low-pressure chamber of the moving and stationary plates affects the amount of refrigerant drawn in at the lower suction port of the moving and stationary plates, thus affecting the volumetric efficiency. Summary of the Invention

[0007] The main objective of this invention is to provide a scroll compressor and heat exchange equipment to solve the problem of unstable lubricating oil intake in the pump body of the scroll compressor in the prior art.

[0008] To achieve the above objectives, according to one aspect of the present invention, a scroll compressor is provided, comprising: a housing, a support assembly, and a movable scroll and a stationary scroll that cooperate with each other. The housing has an oil storage chamber and an intake chamber; the support assembly has a gas passage; the support assembly, the movable scroll, and the stationary scroll are all disposed within the housing, and a compression chamber is formed between the movable scroll and the stationary scroll, the movable scroll being movably disposed relative to the support assembly; wherein, the intake chamber communicates with the compression chamber through the gas passage, and the height of the gas passage is higher than a preset limit height of the oil level in the oil storage chamber.

[0009] Furthermore, the support assembly includes: a support body; a wear-resistant plate, which is disposed between the support body and the moving scroll and the stationary scroll. Ventilation holes are respectively provided on the support body and the wear-resistant plate so that the ventilation holes on the support body and the ventilation ports on the wear-resistant plate are connected to form a gas channel.

[0010] Furthermore, an intermediate cavity is formed between the moving scroll and the support assembly, and the intermediate cavity is connected to the oil storage cavity; the moving scroll has an oil suction hole, and the intermediate cavity is connected to the compression cavity through the oil suction hole, so that the lubricating oil in the intermediate cavity is divided into two paths, one path enters the compression cavity through the oil suction hole to lubricate the moving scroll and the stationary scroll, and the other path flows back to the oil storage cavity.

[0011] Furthermore, the end face of the moving scroll facing the support assembly has a flange, and the intermediate cavity and oil suction hole are both located inside the flange.

[0012] Furthermore, the distance between the oil suction hole and the center point of the moving scroll is greater than the distance between the oil suction hole and the outer periphery of the moving scroll.

[0013] Furthermore, the end face of the moving scroll facing the stationary scroll has a spiral moving scroll profile, and the oil suction hole is located at the end of the moving scroll profile away from the center of the moving scroll.

[0014] Furthermore, the oil suction hole is located at the end of the moving scroll profile, on the inner side facing the center of the moving scroll.

[0015] Furthermore, the end face of the stationary volute facing the moving volute has a spiral stationary volute profile, which is located within the movement range of the oil suction hole, and the stationary volute profile blocks the oil suction hole when the suction ends.

[0016] Furthermore, the moving scroll has a slotted structure for mounting the ring structure or adjusting the counterweight, and the oil suction hole is set independently relative to the slotted structure.

[0017] Furthermore, the moving scroll has a slotted structure for mounting the ring structure or adjusting the counterweight, and the oil suction hole is located at the edge of the slotted structure and communicates with the slotted structure.

[0018] Furthermore, the support assembly has a middle channel, the middle cavity is connected to the oil storage cavity through the middle channel, and the connection between the middle channel and the oil storage cavity forms a middle connection port. The oil suction hole is higher than the lowest point of the middle connection port. The end face of the moving scroll facing the support assembly has a flange, and the oil suction hole is located at the flange. The moving scroll also has a connecting channel (35) extending downward along the circumference of the moving scroll. The middle cavity is connected to the oil suction hole through the connecting channel.

[0019] Furthermore, the support assembly has a central channel, the central cavity is connected to the oil storage cavity through the central channel, and the connection between the central channel and the oil storage cavity forms a central connection port. The oil suction hole is equal to or lower than the lowest point of the central connection port, and the oil suction hole is immersed in the lubricating oil in the central cavity.

[0020] Furthermore, there are multiple gas channels, arranged circumferentially along the support assembly.

[0021] Furthermore, the stationary vortex disk has an oil return hole, and the support assembly has an oil return channel. The oil return hole is connected to the intermediate cavity through the oil return channel.

[0022] Furthermore, the support assembly includes: a support body and a wear-resistant plate. The wear-resistant plate is disposed between the support body and the moving scroll and the stationary scroll. An oil return channel is formed between the support body and the wear-resistant plate. The wear-resistant plate is provided with a through hole, which is aligned with the oil return hole. The oil return hole is connected to the oil return channel through the through hole.

[0023] According to another aspect of the present invention, a heat exchange device is provided, comprising the scroll compressor described above.

[0024] By applying the technical solution of this invention, a gas channel is provided between the suction chamber and the compression chamber, and this gas channel is positioned at a height below the preset limit of the oil level in the oil storage chamber. This allows the lower region of the support assembly to act as a barrier, separating the oil storage chamber at the bottom of the compressor from the low-pressure chamber at the bottom. This prevents the lubricating oil in the oil storage chamber from directly flowing into the low-pressure chamber. Therefore, changes in the lubricating oil level do not affect the refrigerant intake at the suction port below the moving and stationary scrolls, thus avoiding instability in the pump's lubricating oil intake. Furthermore, there is no need to precisely control the oil level within the suction port range; simply keeping the lubricating oil level below the gas channel is sufficient. The oil level no longer affects the lubrication or leakage of the moving and stationary scrolls, and therefore does not affect their volumetric efficiency, thus improving volumetric efficiency compared to traditional structures. In actual use, the amount of oil pumped into the suction chamber can be adjusted by changing the size or position of the oil suction hole, ensuring lubrication while preventing excessive oil content in the compressed refrigerant, thereby improving the volumetric efficiency of the moving and stationary scrolls. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0026] Figure 1 A side sectional view of a scroll compressor according to Embodiment 1 of the present invention is shown;

[0027] Figure 2 It shows Figure 1 Enlarged view of point P in the middle;

[0028] Figure 3 It shows Figure 1 A schematic diagram of the structure of the support body in the diagram;

[0029] Figure 4 It shows Figure 1 A schematic diagram of the structure of the wear-resistant sheet in the middle;

[0030] Figure 5 It shows Figure 1 A schematic diagram of the structure on the back of the moving scroll plate;

[0031] Figure 6 It shows Figure 1 A schematic diagram of the structure in which the moving scroll plate and the support assembly work together;

[0032] Figure 7 It shows Figure 1 A schematic diagram of the structure in which the moving scroll plate and the stationary scroll plate cooperate;

[0033] Figure 8 A schematic diagram of the moving scroll plate according to Embodiment 2 of the present invention is shown;

[0034] Figure 9 It shows Figure 8 A cross-sectional view of the scroll compressor at the steel ring bore;

[0035] Figure 10 A schematic diagram of the moving scroll plate of Embodiment 3 of the present invention is shown.

[0036] The above figures include the following reference numerals:

[0037] 10. Shell; 11. Oil reservoir; 12. Suction chamber; 20. Support assembly; 21. Gas passage; 22. Support body; 23. Wear-resistant plate; 24. Intermediate connecting port; 25. Oil return passage; 26. Through hole; 30. Moving scroll; 31. Oil suction hole; 32. Flange; 33. Moving scroll profile; 34. Hole and groove structure; 35. Connecting channel; 36. Hole and groove connecting channel; 40. Stationary scroll; 41. Stationary scroll profile; 42. Oil return hole; 50. Compression chamber; 60. Intermediate chamber. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0040] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0041] To address the problem of unstable lubricating oil intake in the pump body of existing scroll compressors, this invention provides a scroll compressor and a heat exchange device. The heat exchange device includes the scroll compressor described below.

[0042] Example 1

[0043] like Figures 1 to 7 The scroll compressor shown includes: a housing 10, a support assembly 20, and a moving scroll 30 and a stationary scroll 40 that cooperate with each other. The housing 10 has an oil storage chamber 11 and an intake chamber 12; the support assembly 20 has a gas passage 21; the support assembly 20, the moving scroll 30, and the stationary scroll 40 are all disposed within the housing 10, and a compression chamber 50 is formed between the moving scroll 30 and the stationary scroll 40. The moving scroll 30 is movably disposed relative to the support assembly 20; wherein, the intake chamber 12 is connected to the compression chamber 50 through the gas passage 21, and the height of the gas passage 21 is higher than the preset limit height of the oil level in the oil storage chamber 11.

[0044] In this embodiment, a gas channel 21 is provided between the suction chamber 12 and the compression chamber 50, and the gas channel 21 is positioned below the maximum preset height of the oil level in the oil storage chamber 11. In this way, the lower part of the bracket assembly 20 can act as a barrier, separating the oil storage chamber 11 at the bottom of the compressor from the low-pressure chamber at the bottom. This prevents the lubricating oil in the oil storage chamber 11 from flowing directly into the low-pressure chamber. Therefore, changes in the lubricating oil level do not affect the amount of refrigerant drawn in at the suction port below the moving and stationary scrolls, thus avoiding the instability of the pump body's lubricating oil intake. At the same time, there is no need to precisely control the oil level within the suction port range; it is sufficient to control the lubricating oil level below the gas channel 21. The oil level no longer affects the lubrication and leakage of the moving and stationary scrolls, and therefore does not affect the volumetric efficiency of the moving and stationary scrolls, thereby improving the volumetric efficiency compared to the traditional structure. In actual use, the amount of oil pumped into the suction chamber 12 can be adjusted by adjusting the size or position of the oil suction hole 31, ensuring lubrication while preventing the oil content of the compressed refrigerant from being too high, thereby improving the volumetric efficiency of the moving and stationary scrolls.

[0045] This embodiment uses a horizontal scroll compressor as an example for illustration; however, other types of scroll compressors can also be used. Figure 1 and Figure 2 As shown, when the scroll compressor is running, the low-temperature, low-pressure refrigerant enters the low-pressure chamber of the moving and stationary scrolls through the suction chamber 12 of the housing 10. At this time, the refrigerant and the lubricating oil drawn in by the moving and stationary scrolls are drawn in through the low-pressure chamber of the moving and stationary scrolls, compressed through the central compression chamber 50 between the moving and stationary scrolls and the high-pressure chamber of the moving and stationary scrolls, and discharged from the stationary scroll 40 to the high-pressure chamber formed by the front cover and the stationary scroll 40. At this time, the refrigerant is in a high-temperature and high-pressure state. The high-temperature and high-pressure refrigerant containing lubricating oil is separated by the oil separator of the front cover and discharged from the compressor. The separated lubricating oil flows back to the intermediate chamber 60 of the moving scroll 30, wear-resistant plate 23, and bracket body 22 through the oil return hole 42 of the stationary scroll 40 and the oil return channel 25 of the bracket assembly 20. The lubricating oil in the intermediate chamber 60 splashes and lubricates the bearings on both sides of the eccentric sleeve under the drive of the eccentric sleeve. The excess lubricating oil flows back to the oil storage chamber 11 of the housing 10 through the central hole of the bracket baffle.

[0046] It should be noted that the moving scroll 30 of the scroll compressor in this embodiment undergoes a rotary translational motion, that is, the moving scroll 30 moves in a plane along the surface where its end face is located, and the trajectory of the motion is a circular motion. A spiral stationary scroll profile 41 is provided on the stationary scroll 40. The moving scroll 30 is composed of a scroll disk and a base plate. A moving scroll profile 33 is provided on the scroll disk. The stationary scroll profile 41 and the moving scroll profile 33 can be symmetrically arranged and coiled together. When the moving scroll 30 rotates in the plane, the size of the compression cavity 50 formed between the stationary scroll profile 41 and the moving scroll profile 33 can be changed, thereby achieving a compression effect.

[0047] like Figure 3 and Figure 4 As shown, the support assembly 20 in this embodiment includes a support body 22 and a wear-resistant plate 23. The wear-resistant plate 23 is disposed between the support body 22 and the moving and stationary scroll plates 30, that is, a portion of the wear-resistant plate 23 is located between the support body 22 and the moving scroll plate 30, and another portion is located between the support body 22 and the stationary scroll plate 40. The wear-resistant plate 23 has a circular annular thin sheet structure. Ventilation holes are respectively provided on the support body 22 and the wear-resistant plate 23, so that the ventilation holes on the support body 22 and the ventilation ports on the wear-resistant plate 23 are connected to form a gas channel 21 that penetrates both sides of the support body 22 axially.

[0048] In this embodiment, the oil level is at the maximum preset height on the support body 22 and the wear-resistant plate 23 (i.e., Figure 3 No hole-like structures are provided at the position below the dashed line (the position shown in the middle), neither through holes nor blind holes are provided, which simplifies the structure of the bracket body 22 and the wear-resistant plate 23, while ensuring the blocking effect of the bracket assembly 20.

[0049] In this embodiment, an intermediate cavity 60 is formed between the moving scroll 30 and the support assembly 20, and the intermediate cavity 60 is connected to the oil storage cavity 11. More specifically, the intermediate cavity 60 can be formed entirely by the moving scroll 30 and the support assembly 20, or it can be partially formed by the moving scroll 30 and the support assembly 20, with the other part formed by the support assembly 20 and components such as the main shaft. As long as it is a cavity that is directly connected to the oil storage cavity 11 and is located on the front side of the oil storage cavity 11 when the lubricating oil flows back into the oil storage cavity 11, it is acceptable.

[0050] like Figure 2 and Figure 5 As shown, this embodiment also has an oil suction hole 31 on the moving scroll 30. The oil suction hole 31 extends through the moving scroll 30, and the intermediate cavity 60 is connected to the compression cavity 50 through the oil suction hole 31. In this way, the lubricating oil in the intermediate cavity 60 is divided into two paths with two directions. One path enters the compression cavity 50 through the oil suction hole 31 to lubricate the moving scroll 30 and the stationary scroll 40, while the other path flows back to the oil storage cavity 11. In this way, the oil circuit forms a circulation path of oil return-oil storage-dynamic oil suction. The movement of the moving scroll 30 controls the intermittent connection between the suction cavity 12 and the oil storage cavity 11 to achieve oil supply to the suction cavity 12, thereby improving the effective utilization of lubricating oil.

[0051] In this embodiment, the end face of the moving scroll 30 facing the support assembly 20 has a flange 32. Due to the presence of the flange 32, the support assembly 20 and the moving scroll 30 form a space on the inner side of the flange 32, which serves as part of the intermediate cavity 60. Simultaneously, in this embodiment, both the intermediate cavity 60 and the oil suction hole 31 are located inside the flange 32. This allows the intermediate cavity 60 and the oil suction hole 31 to communicate, while ensuring that the oil suction hole 31 can only connect with the intermediate cavity 60, thus allowing the intermediate cavity 60 to draw oil and preventing oil path confusion. The gas passage 21 is located on the outer side of the flange 32, preventing the refrigerant and lubricating oil from directly entering the compression chamber 50 near the center. Instead, they are compressed gradually from the outside towards the center, also preventing the lubricating oil from being directly discharged from the gas passage 21.

[0052] Preferably, the distance between the oil suction hole 31 and the center point of the moving scroll 30 is greater than the distance between the oil suction hole 31 and the outer periphery of the moving scroll 30. This allows the oil suction hole 31 to engage with the low-pressure chamber offset to the outer side, achieving the effect of air and oil suction. The above configuration is primarily a preferred method when the size of the moving scroll profile 33 is not significantly different from the size of the scroll body of the moving scroll 30. The specific configuration can be adjusted according to the specific structure of the moving scroll 30. For example, when the size of the moving scroll profile 33 is small and the size of the scroll body is large, the distance between the oil suction hole 31 and the center point of the moving scroll 30 can also be less than or equal to the distance between the oil suction hole 31 and the outer periphery of the moving scroll 30.

[0053] like Figure 6 and Figure 7 As shown, in this embodiment, the end face of the moving scroll 30 facing the stationary scroll 40 has a spiral moving scroll profile 33, and the oil suction hole 31 is located at the end of the moving scroll profile 33 away from the center of the moving scroll 30. This location is chosen because it corresponds to the position of the low-pressure chamber, thus ensuring a stable fit between the oil suction hole 31 and the low-pressure chamber.

[0054] Furthermore, in this embodiment, the oil suction hole 31 is located on the inner side of the end of the moving scroll profile 33, facing the center of the moving scroll 30. Here, "inner side" does not refer to the inner surface of the moving scroll profile 33, but rather to the side near the end facing the center of the moving scroll 30. Thus, the oil suction hole 31 is not only located within the low-pressure chamber, but it can also cooperate with the stationary scroll profile 41. That is, the end face of the stationary scroll 40 facing the moving scroll 30 has a spiral stationary scroll profile 41, and the stationary scroll profile 41 is within the movement range of the oil suction hole 31. Therefore, as the plane of the moving scroll 30 rotates, the stationary scroll profile 41 and the oil suction hole 31 can switch between blocking and avoiding each other, and when the suction ends, the stationary scroll profile 41 blocks the oil suction hole 31. This ensures that the oil suction hole 31 is not connected to the central compression chamber 50, and that the closed suction chamber 12 is not connected to the low-pressure chamber on the back side of the moving scroll 30, preventing leakage to the low-pressure chamber on the back side of the moving scroll 30 when the closed suction chamber 12 compresses gas.

[0055] In this embodiment, the moving scroll 30 has a slot structure 34 for mounting a ring structure or adjusting a counterweight. Specifically, the slot structure 34 is a steel ring hole and a counterweight groove. In this embodiment, the oil suction hole 31 is set independently relative to the slot structure 34, that is, the oil suction hole 31 is not connected to the slot structure 34. In this way, the oil suction hole 31 is relatively independent and will not be affected by the slot structure 34.

[0056] In this embodiment, the support assembly 20 has a central channel located between the central cavity 60 and the oil storage cavity 11. The central channel is basically formed by the support body 22 and the main shaft. The size of the central hole of the support body 22 is larger than the size of the main shaft, so that there is a certain distance between the inner wall of the central hole of the support body 22 and the outer wall of the main shaft. The space formed by this distance is the central channel, and the central cavity 60 is connected to the oil storage cavity 11 through the central channel. Furthermore, the connection between the intermediate channel and the oil storage cavity 11 forms an intermediate communication port 24. Specifically, the central hole of the bracket body 22 is not necessarily a straight hole, but can be a stepped hole, which facilitates the fit with the eccentric sleeve. At the end of the central hole facing the oil storage cavity 11, there is a baffle portion that extends radially inward. The location of the baffle portion is the location of the intermediate communication port 24. The intermediate channel is connected to the oil storage cavity 11 through this intermediate communication port 24. The diameter of the baffle portion is related to the size of the intermediate communication port 24. The larger the diameter of the baffle portion, the smaller the intermediate communication port 24. The height of the baffle portion also determines the amount of lubricating oil that can be stored in the intermediate cavity 60.

[0057] In this embodiment, the oil suction hole 31 is located at the lowest point below the intermediate connecting port 24, that is, below the top of the lower side of the baffle portion. In this way, the oil suction hole 31 can be completely immersed in the lubricating oil in the intermediate cavity 60, thereby ensuring smooth oil suction.

[0058] In this embodiment, there are multiple gas channels 21 arranged circumferentially along the support assembly 20. Gas channels 21 can be arranged circumferentially in the upper-middle region and a small area in the lower-middle region of the support assembly 20 to ensure the amount of air drawn from the intake chamber 12 into the low-pressure chamber and avoid insufficient air supply. In this embodiment, the gas channels 21 are elongated and arc-shaped, with the arc shape matching the circumferential shape of the support assembly 20.

[0059] like Figure 1 , Figure 4 and Figure 6 As shown, in this embodiment, the stationary volute 40 has an oil return hole 42, which extends through both ends of the stationary volute 40 along its axial direction. One end of the oil return hole 42 is connected to the high-pressure chamber where the diverter is located, and the other end faces the support assembly 20. An oil return channel 25 is provided on the support assembly 20, and the other end of the oil return hole 42 is connected to the oil return channel 25, thereby allowing the oil return hole 42 to communicate with the intermediate chamber 60 through the oil return channel 25. During oil return, the lubricating oil enters the intermediate chamber 60 from the high-pressure chamber through the oil return hole 42 and the oil return channel 25, and then enters the compression chamber 50 through the oil suction hole 31, or enters the oil storage chamber 11 through the intermediate channel.

[0060] In this embodiment, a long, narrow groove is provided on the end face of the support body 22 facing the moving scroll 30. The wear-resistant plate 23 is positioned in the groove and covers it, thus forming an oil return channel 25 between the wear-resistant plate 23 and the support body 22. Simultaneously, to ensure communication between the oil return hole 42 and the oil return channel 25, a through hole 26 is provided on the wear-resistant plate 23 at a position aligned with the oil return hole 42. Since the through hole 26 is aligned with the oil return hole 42, it effectively connects the oil return hole 42 and the oil return channel 25; that is, the oil return hole 42 communicates with the oil return channel 25 through the through hole 26. In this embodiment, the size of the through hole 26 is set slightly larger than the sizes of the oil return hole 42 and the oil return channel 25, thereby ensuring the through hole 26 provides clearance.

[0061] Example 2

[0062] The difference from Embodiment 1 is that the relationship between the moving scroll 30 and the slot structure 34 is different.

[0063] like Figure 8 and Figure 9As shown, in this embodiment, the oil suction hole 31 is located at the edge of the slot structure 34 and is connected to the slot structure 34. Specifically, to ensure smooth oil suction from the oil suction hole 31, this embodiment makes full use of the space of the steel ring hole or counterweight groove near the end of the profile on the lower side of the moving scroll 30, connecting the oil suction hole 31 to the steel ring hole or counterweight groove. In this embodiment, to ensure the position of the oil suction hole 31 on the scroll side, the oil suction hole 31 is opened on the side wall of the steel ring hole of the moving scroll 30, and at the same time, a slot connection channel 36 connecting the oil suction hole 31 and the steel ring hole is opened at the bottom of the steel ring hole, thereby making the oil suction hole 31 connected to the steel ring hole. The steel ring placed inside the steel ring hole forms a space such as the hole-groove connecting channel 36 with the moving scroll 30. At the same time, this space connects the moving scroll 30 with the part of the intermediate cavity 60 formed by the wear-resistant plate 23. In this way, the above-mentioned oil suction hole 31, hole-groove connecting channel 36, and intermediate cavity 60 form a large oil storage cavity, ensuring smooth oil pumping by the moving and stationary scrolls.

[0064] Example 3

[0065] The difference from Embodiment 1 is that the positional relationship between the oil suction hole 31 and the intermediate connecting port 24 is different.

[0066] In this embodiment, the support assembly 20 has a central channel located between the central cavity 60 and the oil storage cavity 11. The central channel is basically formed by the support body 22 and the main shaft. The size of the central hole of the support body 22 is larger than the size of the main shaft, so that there is a certain distance between the inner wall of the central hole of the support body 22 and the outer wall of the main shaft. The space formed by this distance is the central channel, that is, the central cavity 60 is connected to the oil storage cavity 11 through the central channel. Furthermore, the connection between the intermediate channel and the oil storage cavity 11 forms an intermediate communication port 24. Specifically, the central hole of the bracket body 22 is not necessarily a straight hole, but can be a stepped hole, which facilitates the fit with the eccentric sleeve. At the end of the central hole facing the oil storage cavity 11, there is a baffle portion that extends radially inward. The location of the baffle portion is the location of the intermediate communication port 24. The intermediate channel is connected to the oil storage cavity 11 through this intermediate communication port 24. The diameter of the baffle portion is related to the size of the intermediate communication port 24. The larger the diameter of the baffle portion, the smaller the intermediate communication port 24. The height of the baffle portion also determines the amount of lubricating oil that can be stored in the intermediate cavity 60.

[0067] like Figure 10As shown, in this embodiment, the oil suction hole 31 is higher than the lowest point of the intermediate connecting port 24, that is, the oil suction hole 31 is higher than the top of the lower side of the baffle portion. In this case, the oil suction hole 31 is located at the flange 32. The moving scroll 30 also has a connecting channel 35 extending downward along the circumference of the moving scroll 30. The connecting channel 35 is located on the flange 32. When the wear-resistant plate 23 is in close contact with the moving scroll 30, it can block the connecting channel 35, thereby making the connecting channel 35 form a channel shape. The top end of the connecting channel 35 is connected to the oil suction hole 31, and the bottom end is connected to the intermediate cavity 60, so that the intermediate cavity 60 is connected to the oil suction hole 31 through the connecting channel 35. In this way, during one revolution of the moving scroll 30, the bottom end of the connecting channel 35 is always located below the top of the lower side of the baffle portion, so that the oil suction hole 31 can smoothly suck oil from the intermediate cavity 60 when the moving scroll 30 is running.

[0068] Example 4

[0069] The difference from Embodiment 1 is that the specific structure of the support assembly 20 is different.

[0070] The support assembly 20 in this embodiment includes a support body 22 and a wear-resistant plate 23. The wear-resistant plate 23 is disposed between the support body 22 and the moving and stationary scroll plates 30, that is, a portion of the wear-resistant plate 23 is located between the support body 22 and the moving scroll plate 30, and another portion is located between the support body 22 and the stationary scroll plate 40. The wear-resistant plate 23 has a circular annular thin sheet structure. Ventilation holes are respectively provided on the support body 22 and the wear-resistant plate 23, so that the ventilation holes on the support body 22 and the ventilation ports on the wear-resistant plate 23 are connected to form a gas channel 21 that runs through both sides of the support body 22 axially.

[0071] Since the support assembly 20 comprises a support body 22 and a wear-resistant plate 23, the gas channel 21 is essentially formed by the support body 22 and the wear-resistant plate 23. Based on this, a perforated structure can be provided as needed at a position below the preset maximum oil level on the support body 22 and the wear-resistant plate 23. For example, a through hole can be provided on one or both of the support body 22 and the wear-resistant plate 23. However, unlike the vent hole in Embodiment 1, the through hole on the support body 22 and the through hole on the wear-resistant plate 23 are not correspondingly provided. That is, the through holes do not align, nor do they form a hole penetrating both sides of the axial direction of the support assembly 20. Thus, although a through hole is provided, the support body 22 blocks the through hole on the wear-resistant plate 23, and the wear-resistant plate 23 blocks the through hole on the support body 22, preventing the perforated structure below the preset maximum oil level from forming a so-called through-type gas channel 21, and therefore, it will not affect the lubricating oil intake.

[0072] It should be noted that "multiple" in the above embodiments refers to at least two.

[0073] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0074] 1. Solved the problem of unstable lubricating oil intake in the pump body of the scroll compressor in the existing technology;

[0075] 2. The lubricating oil in the oil storage chamber cannot flow directly into the low-pressure chamber. Therefore, the change in the height of the lubricating oil level does not affect the amount of refrigerant drawn in at the suction port on the lower side of the moving and stationary scrolls, thus avoiding the situation of unstable lubricating oil intake in the pump body.

[0076] 3. There is no need to precisely control the oil level within the air intake range. It is sufficient to control the lubricating oil level below the gas passage. The oil level no longer affects the lubrication and leakage of the moving and stationary scrolls, and therefore does not affect the volumetric efficiency of the moving and stationary scrolls, thus improving the volumetric efficiency compared to the traditional structure.

[0077] 4. By adjusting the size or position of the oil suction hole, the amount of oil pumped into the suction chamber can be adjusted to ensure lubrication while preventing the oil content of the compressed refrigerant from becoming too high, thereby improving the volumetric efficiency of the moving and stationary scrolls.

[0078] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0079] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0080] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A scroll compressor, characterized in that, include: The housing (10) has an oil storage chamber (11) and an air intake chamber (12). A support assembly (20) having a gas passage (21); The moving scroll (30) and the stationary scroll (40) cooperate with each other. The support assembly (20), the moving scroll (30) and the stationary scroll (40) are all disposed in the housing (10). A compression cavity (50) is formed between the moving scroll (30) and the stationary scroll (40). The moving scroll (30) is movable relative to the support assembly (20). The suction chamber (12) is connected to the compression chamber (50) through the gas channel (21), and the height of the gas channel (21) is higher than the maximum preset height of the oil level in the oil storage chamber (11). An intermediate cavity (60) is formed between the moving scroll (30) and the support assembly (20), and the intermediate cavity (60) is connected to the oil storage cavity (11); The moving scroll (30) has an oil suction hole (31), and the intermediate cavity (60) is connected to the compression cavity (50) through the oil suction hole (31) so that the lubricating oil in the intermediate cavity (60) is divided into two paths. One path enters the compression cavity (50) through the oil suction hole (31) to lubricate the moving scroll (30) and the stationary scroll (40), and the other path flows back to the oil storage cavity (11). The moving scroll (30) has a spiral moving scroll profile (33) on its end face facing the stationary scroll (40), and the oil suction hole (31) is located at the end of the moving scroll profile (33) away from the center of the moving scroll (30). The oil suction hole (31) is located at the end of the moving scroll profile (33) and inside the center of the moving scroll (30); The distance between the oil suction hole (31) and the center point of the moving scroll (30) is greater than the distance between the oil suction hole (31) and the outer periphery of the moving scroll (30); The stationary vortex disk (40) has a spiral stationary vortex disk profile (41) on its end face facing the moving vortex disk (30). The stationary vortex disk profile (41) is located within the movement range of the oil suction hole (31), and when the suction ends, the stationary vortex disk profile (41) blocks the oil suction hole (31).

2. The scroll compressor according to claim 1, characterized in that, The support assembly (20) includes: Support body (22); Wear-resistant plate (23) is disposed between the support body (22) and the moving volute (30) and the stationary volute (40). Ventilation holes are respectively provided on the support body (22) and the wear-resistant plate (23) so that the ventilation holes on the support body (22) and the ventilation ports on the wear-resistant plate (23) are connected to form the gas channel (21).

3. The scroll compressor according to claim 1, characterized in that, The moving scroll (30) has a flange (32) on the end face facing the support assembly (20), and the intermediate cavity (60) and the oil suction hole (31) are both located inside the flange (32).

4. The scroll compressor according to claim 1, characterized in that, The moving scroll (30) has a slotted structure (34) for mounting a ring structure or adjusting a counterweight, and the oil suction hole (31) is set independently relative to the slotted structure (34).

5. The scroll compressor according to claim 1, characterized in that, The moving scroll (30) has a slotted structure (34) for mounting a ring structure or adjusting a counterweight. The oil suction hole (31) is located at the edge of the slotted structure (34) and communicates with the slotted structure (34).

6. The scroll compressor according to claim 1, characterized in that, The support assembly (20) has a middle channel, the middle cavity (60) is connected to the oil storage cavity (11) through the middle channel, and the connection between the middle channel and the oil storage cavity (11) forms a middle connection port (24). The oil suction hole (31) is higher than the lowest point of the middle connection port (24). The end face of the moving vortex (30) facing the support assembly (20) has a flange (32). The oil suction hole (31) is located at the flange (32). The moving vortex (30) also has a connecting channel (35) extending downward along the circumference of the moving vortex (30). The middle cavity (60) is connected to the oil suction hole (31) through the connecting channel (35).

7. The scroll compressor according to claim 1, characterized in that, The bracket assembly (20) has a middle channel, the middle cavity (60) is connected to the oil storage cavity (11) through the middle channel, and the connection between the middle channel and the oil storage cavity (11) forms a middle connection port (24). The oil suction hole (31) is equal to or lower than the lowest point of the middle connection port (24), and the oil suction hole (31) is immersed in the lubricating oil in the middle cavity (60).

8. The scroll compressor according to claim 1, characterized in that, The gas channels (21) are multiple and are arranged circumferentially along the support assembly (20).

9. The scroll compressor according to claim 1, characterized in that, The stationary vortex disk (40) has an oil return hole (42), and the support assembly (20) has an oil return channel (25). The oil return hole (42) is connected to the intermediate cavity (60) through the oil return channel (25).

10. The scroll compressor according to claim 9, characterized in that, The support assembly (20) includes: Support body (22); Wear-resistant plate (23) is disposed between the support body (22) and the moving scroll (30) and the stationary scroll (40). The oil return channel (25) is formed between the support body (22) and the wear-resistant plate (23). The wear-resistant plate (23) is provided with a through hole (26). The through hole (26) is aligned with the oil return hole (42). The oil return hole (42) is connected to the oil return channel (25) through the through hole (26).

11. A heat exchange device, characterized in that, The scroll compressor includes any one of claims 1 to 10.

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