Compressor

Abstract

The invention discloses a compressor. The compressor comprises a dynamic vortex plate which is located between a support and a static vortex plate and moves relative to the support and the static vortex plate, the dynamic vortex plate is provided with a dynamic vortex wall and a dynamic base plate, the dynamic vortex wall is meshed with the static vortex wall, the dynamic base plate is provided with a vortex wall side and a back side, the vortex wall side is opposite to the static base plate, a sealing cavity is formed between the back side and the support, and the static vortex plate is arranged in the sealing cavity. The sealing cavity is communicated with a lubricant loop, a lubricant is input into the sealing cavity, and back pressure used for keeping the dynamic vortex wall in contact with the static base plate exists in the sealing cavity; wherein the sealing cavity conveys lubricant away from the sealing cavity through a transfer channel, the transfer channel is provided with an outlet, and the outlet is located on the first side, facing the back side, of the support and communicates with a cavity between the support and the static vortex disc. The application can control the flow of the lubricant from the back pressure chamber to the compression chamber.

Description

Technical Field

[0001] The present application relates to a compressor in which a refrigerant is pressurized. Background Art

[0002] A scroll compressor is equipped with an orbiting scroll and a fixed scroll. The orbiting scroll is driven by an eccentric shaft to orbit relative to the fixed fixed scroll without rotating on its own, forming a compression chamber between the two scrolls for compressing the fluid. The orbiting scroll has a backpressure chamber on the side opposite the fixed scroll. The pressure in the compression chamber exerts a compression thrust on the orbiting scroll, while the pressure in the backpressure chamber exerts a backpressure thrust on the orbiting scroll. During compressor operation, the pressures in the compression chamber and the backpressure chamber change dynamically. When the compression thrust and backpressure thrust differ in magnitude, a thrust imbalance occurs. For example, when the compression thrust is greater than the backpressure thrust, the end of the orbiting scroll will break away from contact with the fixed scroll, leaking compressed fluid. This reduces compressor efficiency. For another example, when the compression thrust is less than the backpressure thrust, the backpressure thrust pushes the orbiting scroll, forcing the end of the orbiting scroll into close contact with the fixed scroll. When the compression thrust is significantly less than the backpressure thrust, the friction between the orbiting scroll and the fixed scroll becomes excessive. The efficiency of the compressor will also be reduced.

[0003] The compressor's lubrication system provides lubricant to rotating components, reducing friction and wear. The lubricant is separated and filtered under a pressure differential before entering a backpressure chamber, where it lubricates the various rotating components that require lubrication, such as bearings and balance weights. The lubricant is then recycled through a specific method and circulated within the lubrication system. Summary of the Invention

[0004] One aspect of the present application is to provide a compressor having a circulating lubricant circuit.

[0005] The compressor comprises:

[0006] a bracket supporting the main shaft;

[0007] A static vortex plate is arranged relative to the bracket, and the static vortex plate has a static vortex wall and a static base plate;

[0008] a movable scroll located between the bracket and the fixed scroll and movable relative to both, the movable scroll having a movable scroll wall and a movable base plate, the movable scroll wall meshing with the fixed scroll wall, the movable base plate having a scroll wall side and a back side, the scroll wall side facing the fixed base plate, a sealed cavity between the back side and the bracket, the sealed cavity being in communication with a lubricant circuit, lubricant being input into the sealed cavity, and a back pressure being present in the sealed cavity for maintaining contact between the movable scroll wall and the fixed base plate;

[0009] The seal cavity transports lubricant out of the seal cavity through a transfer channel, wherein the transfer channel has an outlet located on a first side of the bracket facing the back side and communicating with a cavity between the bracket and the fixed scroll.

[0010] In one embodiment of the compressor, the outlet is positioned at a first distance from the axis of the main shaft such that the outlet is closed by periodic obstruction of the orbiting scroll during movement.

[0011] In one embodiment of the compressor, the movable vortex wall and the static vortex wall each have a starting end close to the center and a terminal end far from the center, and the discharge port is positioned close to the terminal end of the movable vortex wall and / or the static vortex wall, so that the lubricant flow leaving through the discharge port enters the outermost compression chamber.

[0012] In an embodiment of the compressor, the closing time period of the outlet in a single cycle is adjusted by setting the size of the first distance.

[0013] In an embodiment of the compressor, the movable scroll wall and the fixed scroll wall each have a starting end close to the center and a terminal end far from the center, and the outlet is located close to the terminal end of the movable scroll wall and / or the fixed scroll wall.

[0014] In one embodiment of the compressor, the compressor further includes an intermediate plate fixed to the bracket, the discharge port is arranged on the intermediate plate, and the transfer channel is arranged in the bracket and aligned with the discharge port.

[0015] In one embodiment of the compressor, a seal is provided on the back side to keep the movable base plate in contact with the intermediate plate, a moving track of the seal on the intermediate plate forms a ring area, and the discharge port is located within the ring area.

[0016] In one embodiment of the compressor, the sealed cavity is provided with an input port through which the lubricant enters and an output port through which the lubricant leaves, the sealed cavity accommodates a first bearing for supporting the movable scroll and a second bearing supported between the bracket and the main shaft, the input port is located below the sealed cavity, and the height position of the output port relative to the sealed cavity is set between 1 / 3 and 2 / 3 of the diameter of the second bearing.

[0017] In one embodiment of the compressor, the transfer channel includes a horizontal section for receiving overflow lubricant and an inclined redirecting section.

[0018] In one embodiment of the compressor, the compressor further comprises:

[0019] case;

[0020] a cover connected to the housing, the cover being provided with a separator communicating with a discharge port for passing compressed refrigerant;

[0021] a receiving chamber defined by the cover and the housing, wherein the bracket and the fixed scroll are fixed in the receiving chamber;

[0022] The static vortex is provided with a filter to receive lubricant from the separator. An inlet is arranged on the intermediate plate, and the inlet is configured to align with the channel outlet of the static vortex for fixing the filter. A delivery channel is provided in the bracket, and the delivery channel is connected between the inlet and the input port.

[0023] In this application, the lubricant, after leaving the sealed chamber, is transferred and discharged directly into the peripheral area of ​​the compressor's internal space. This peripheral area is a low-pressure zone. The lubricant mixes with the refrigerant and participates in the compression process, achieving circulation. This eliminates the need for separate circulation channels between the orbiting and fixed scrolls, simplifying the compressor's construction and making it easier to manufacture.

[0024] Because the lubricant is discharged into a low-pressure area, it doesn't cause large pressure fluctuations, making it compressor-friendly. Furthermore, by placing the outlet close to the low-pressure area, some of the lubricant mixes with the refrigerant and participates in the compression process, while the remainder flows into the suction side of the compressor to participate in the circulation loop lubricating other components. This diversion helps remove some of the heat from the lubricant.

[0025] During compressor operation, the outlet is periodically blocked by the orbiting scroll, switching between closed and open positions, thereby controlling the amount and duration of lubricant discharge. The orbiting scroll rotates relative to the fixed scroll. During each orbiting scroll revolution, the outlet's state changes regularly, including a fixed ratio of closed and open periods, the timing and duration of closing and opening corresponding to a specific orbital angle, and the amount of lubricant that can be discharged from the outlet from fully closed to fully open. Based on these regularities, designers customized the operating mechanism of the compressor's lubricant circulation circuit. When the outlet is closed, lubricant lubricates the moving parts within the sealed chamber; when the outlet is open, the lubricant is discharged and participates in the refrigerant compression process, thereby being recovered. By designing the outlet's position, the lubricant's lubrication time within the sealed chamber is extended, while also achieving optimal pressure relief for the lubricant leaving the sealed chamber. Compared to compressors with a lubricant circuit that maintains a constant flow cycle, the present invention precisely controls the internal pressure of the sealed chamber and the flow of lubricant, thereby improving compressor efficiency.

[0026] Compared with the solution in which the lubricant flows out of the back-pressure chamber and is recovered through the static vortex, or the solution in which the lubricant is discharged from the back-pressure chamber directly into the refrigerant gas being compressed through the movable vortex, the above-mentioned prior arts provide for forced injection of lubricant into the compression chamber, while the present application provides an optimization solution with reasonable allocation in multiple aspects such as energy and machine operating efficiency.

[0027] The cavity between the bracket and the fixed scroll is located within the compressor, specifically at the radially outermost portion of the fixed scroll's interior space. Lubricant flows into the suction cavity. As the orbiting scroll moves relative to the fixed scroll, the suction cavity closes, compressing the lubricant and refrigerant contained therein. The outlet can be positioned where the compression cavity is about to be formed.

[0028] The change of the radial position of the outlet can change the ratio of the outlet closing time to the opening time.

[0029] The circumferential position of the outlet can be close to the terminal end of the movable vortex wall or the terminal end of the static vortex wall, and the lubricant leaving through the outlet can also enter the suction chamber that is about to close. At this time, the pressure in the chamber is low and it is at the initial stage of the compression process. The lubricant can participate in the compression process throughout the process to protect the moving parts.

[0030] The imaginary ring area is determined by the structure of the movable baseplate and its trajectory. The movable baseplate, the intermediate plate, and the bracket define the sealed cavity. The movable baseplate moves on the intermediate plate, and the overlapping portion with the intermediate plate forms the ring area, or the movable range of the sealed cavity's sealing boundary forms the ring area.

[0031] There can be one or more discharge ports, provided they are spaced at the same radial distance. Multiple discharge ports can be positioned at different heights. Lower discharge ports discharge the majority of the lubricant. Higher discharge ports discharge a smaller amount of lubricant. For example, if lubricant in the backpressure chamber is thrown above the backpressure chamber at high speed, the higher discharge ports receiving this lubricant will absorb some of the lubricant's kinetic energy.

[0032] Other aspects and features of the present application will become apparent from the following detailed description, which proceeds with reference to the accompanying drawings. It should be understood, however, that the drawings are designed for illustrative purposes only and are not intended to limit the scope of the present application, as reference should be made to the appended claims. It should also be understood that the drawings are intended only to conceptually illustrate the structures and processes described herein and, unless otherwise indicated, are not necessarily drawn to scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present application will be more fully understood by referring to the following detailed description of specific embodiments in conjunction with the accompanying drawings, in which the same reference numerals throughout the drawings refer to the same elements.

[0034] Figure 1A partial cross-sectional view of an embodiment of a compressor involved in the present application is shown;

[0035] Figure 2-3 This is a cross-sectional view of the compressor involved in this application viewed from other angles. Figure 2 Shows the drain port is open. Figure 3 The drain port is shown in a closed state;

[0036] Figure 4 A schematic diagram of an embodiment of an intermediate plate in a compressor involved in the present application;

[0037] Figure 5 A schematic diagram of an embodiment of a bracket in a compressor involved in the present application; and

[0038] Figure 6 This is a schematic diagram of the lubricant flow path in the compressor involved in this application. DETAILED DESCRIPTION

[0039] In order to help those skilled in the art to accurately understand the subject matter for which protection is sought in this application, the specific implementation methods of this application are described in detail below with reference to the accompanying drawings.

[0040] Figure 1 This is a partial schematic diagram of an embodiment of the compressor involved in the present application. The compressor includes a shell 12 and a cover 14. The cover 14 is axially connected to the shell 12. The cover 14 and the shell 12 define a receiving chamber 16. A bracket 18 and a static scroll 20 are fixed in the receiving chamber 16. The bracket 18 is used to support the main shaft 22, and an intermediate piece 24 is fixed on the bracket 18. The static scroll 20 is arranged relative to the bracket 18. The side of the bracket 18 facing the static scroll 20 is the first side 28. The movable scroll 25 is located between the intermediate piece 24 and the static scroll 20. The movable scroll 25 is eccentrically arranged on the main shaft 22. Driven by the main shaft 22, the movable scroll 25 moves relative to the static scroll 20 and the intermediate piece 24.

[0041] The fixed scroll 20 has an integral fixed scroll wall 34 and a fixed base plate 36. The movable scroll 25 has an integral movable scroll wall 38 and a movable base plate 40. The movable base plate 40 has a scroll wall side 29 and a back side 31. The scroll wall side 29 faces the fixed base plate 36, and a sealed cavity 30 is formed between the back side 31 and the bracket 18. The movable scroll wall 38 has a spiral involute structure that extends from the center approximately around the axis 1 and away from the axis 1, see Figure 2. The movable volute 38 has a starting end 46 close to the center and a terminal end 48 away from the center. The fixed volute has a structure similar to that of the movable volute. In the axial direction, the end face of the fixed volute 34 contacts the movable base plate 40, while the end face of the movable volute 38 contacts the static base plate 36. In the radial direction, the side faces of the static volute 34 and the movable volute 38 contact to form a compression chamber therebetween. The compression chamber shifts from the terminal end to the center, and during the shift, the volume of the compression chamber gradually decreases, thereby pressurizing the refrigerant therein, and finally the compressed refrigerant is discharged into the cover through the discharge port in the static base plate.

[0042] The compressor has a compression chamber 32 and a back pressure chamber 26. The compression chamber 32 is located on the scroll wall side 29 of the movable base plate 40, and the back pressure chamber 26 is located on the back side 31, that is, where the sealed chamber 30 is located. The compression chamber 32 and the back pressure chamber 26 provide opposite thrusts to the movable scroll 25. Figure 1 As shown, the refrigerant in the compression chamber 32 applies pressure to the orbiting scroll 25 from right to left, and the lubricant in the back-pressure chamber 26 applies pressure to the orbiting scroll 25 from left to right. Under the back-pressure, the orbiting scroll wall contacts the stationary base plate to prevent refrigerant leakage. When the pressure in the compression chamber 32 is too high, causing the orbiting scroll 25 to move away from the stationary scroll 20 and move to the left, the orbiting and stationary scrolls separate, refrigerant leaks, and the pressure decreases. As a result, the back-pressure can push the orbiting scroll 25 back until the pressure on both sides of the orbiting scroll 25 reaches equilibrium. When the pressure in the back-pressure chamber 26 is too high than that in the compression chamber 32, the orbiting scroll 25 presses against the stationary scroll 20, resulting in high friction between the two. Pressure relief through the discharge port reduces the pressure in the back-pressure chamber 26.

[0043] The compressor has a lubricant circuit, which is connected to the sealed chamber 30. Lubricant is introduced into the sealed chamber 30 and leaves the sealed chamber 30 through a transfer passage 74. The transfer passage 74 has an outlet 76 located on the first side 28 and connected to a chamber 78 between the support frame 18 and the fixed scroll 20. After entering the chamber 78, the lubricant mixes with the refrigerant and is compressed together, thereby achieving lubricant recovery.

[0044] The outlet 76 is disposed within the movable range of the movable base plate 40 and can be shielded or exposed by the passive base plate 40 , thereby switching between a closed state and an open state.

[0045] In one embodiment, the middle plate 24 is provided with a drain port 52 at a distance from its center, and the drain port 52 is aligned with the transfer channel or outlet 76. The transfer channel is arranged in the bracket. The lubricant is discharged through the drain port 52. Figure 2 and Figure 3A cross section of the compressor is shown. In the radial direction, the movable scroll 25 moves relative to the fixed scroll 20, and appears as a line contact of the tangent point on the cross section, so that a series of spaces are formed between the movable scroll 25 and the fixed scroll 20. Starting from the periphery, the space is open to attract the refrigerant. As the volume of the space increases, more and more refrigerant is attracted, and then the space is closed to form a compression chamber, and the volume gradually decreases from the periphery to the center, and the refrigerant is pressurized therein. Finally, the refrigerant is connected to the central discharge port 44 to discharge the fixed scroll 20. The position of the discharge port 52 is set so that the lubricant just participates in the compression process of the refrigerant when the discharge port 52 is opened. In one embodiment, the lubricant enters the suction chamber after being discharged, and the suction chamber immediately closes to become a compression chamber. The discharge port 52 is set to be spaced a first distance d1 from the main shaft axis l. The movable scroll 25 in motion periodically blocks the discharge port 52 to close it. Figure 2 This is an illustration of the movable scroll 25 not blocking the discharge port 52 . At this time, the discharge port 52 is fully open, and the lubricant is discharged through the discharge port 52 . Figure 3 This is a diagram showing that the movable scroll 25 blocks the discharge port. At this time, the discharge port is completely closed and no lubricant is discharged. The discharge port 52 is intermittently connected to the cavity 78 to periodically deliver lubricant. The cavity 78 is located at the radially outermost side of the internal space of the fixed scroll 20. In the illustrated embodiment, the number of the discharge port 52 is 1. It can be imagined that a plurality of discharge ports are arranged on the circumference of the first distance d1 from the main shaft, and the opening and closing moments and times of these discharge ports are determined, so that the lubricant circuit in the compressor can be controlled. In the illustrated embodiment, the discharge port 52 is set to be close to the terminal 48 of the movable scroll. When the discharge port 52 is opened, the lubricant is discharged near the terminal 48. At the next moment, the lubricant enters the compression chamber 50 with the refrigerant and begins to transfer with it. The volume and movement of the compression chamber 50 in the compression chamber are always in dynamic change. Terminal 48 is located at the periphery of the compression chamber and represents a low-pressure area. A suction cavity is formed here and receives refrigerant from the compressor's intake side. Once its volume reaches a sufficient level to receive refrigerant, it closes to become a compression cavity through the contact between the orbiting and fixed scrolls and begins to move toward the center. The refrigerant is pressurized as the volume of the compression cavity gradually decreases. A discharge port 52 located near terminal 48 allows some lubricant to enter the compression cavity, where compression begins next. If the discharge port is located too close to the center, all the lubricant will enter the compression cavity, preventing it from participating in compression from the beginning to the end, effectively protecting the moving parts. This lubricant also possesses considerable kinetic energy and heat, and can cause pressure fluctuations. If the discharge port is located too far from the center, the lubricant, while waiting for the compression cavity to form at low pressure, can flow into other, lower-pressure areas of the compressor and become unrecoverable. In other embodiments, two discharge ports may be provided: one located near the terminal end of the orbiting scroll's orbiting vortex wall and the other located near the terminal end of the fixed scroll's fixed vortex wall, 180° apart from the orbiting vortex wall. Furthermore, the size and cross-sectional shape of the discharge ports can be customized.

[0046] Figure 4 For the general Figure 2-3 Schematic diagram showing the orbiting and fixed scrolls removed, leaving only the intermediate piece. Discharge port 52 is positioned within an annular region 56 bounded by an imaginary first orbital circle c1 and a second orbital circle c2. First orbital circle c1 has a radius r1, and second orbital circle c2 has a radius r2. A first distance d1 between discharge port 52 and the center falls within the range between radii r1 and r2. The value of first distance d1 determines the closed period of discharge port 52. Changing first distance d1 can alter the ratio of the closed to open period of the discharge port.

[0047] The first track circle c1 and the second track circle c2 are determined by the range of motion of the movable base plate of the movable scroll on the intermediate plate. In the illustrated embodiment, the movable base plate 40 is in contact with the intermediate plate 24 through the sealing member 42 provided therein (e.g. Figure 1 (as shown). The trajectory of the seal 42 leaves an annular region 56 on the intermediate plate 24. The seal 42 is a resilient element that ensures that the movable baseplate 40 always abuts against the intermediate plate 24, thereby forming a closed backpressure chamber 26 between the movable scroll 25, the intermediate plate 24, and the bracket 18. In other embodiments, the annular region may be the trajectory of another component. For example, if the movable baseplate directly contacts the intermediate plate, the annular region may be the overlapping portion of the movable baseplate and the intermediate plate.

[0048] Figure 5 For Figure 2-4 Schematic diagram of the bracket viewed from the same direction. The sealed cavity is located in the center of the bracket and is provided with an input port 58 and an output port 60. A delivery channel 62 is provided in the bracket to connect to the input port 58, and a transfer channel 74 is provided to connect to the output port 60. An inlet 54 for lubricant is provided on the middle plate. One end of the delivery channel 62 is connected to the input port 58, and the other end is aligned with the inlet 54. One end of the transfer channel 74 is connected to the output port 60, and the other end is aligned with the discharge port 52. If Figure 4 The middle piece and Figure 5 The brackets overlap with each other, the inlet 54 overlaps with the other end of the delivery channel 62, and the discharge port 52 overlaps with the other end of the transfer channel 74.

[0049] In the illustrated embodiment, the inlet 54 on the intermediate plate is positioned at an angle to the discharge port 52. The inlet 54 is generally located at the bottom. Accordingly, the bracket defines a transfer channel 62 at the bottom. When the compressor is assembled, the inlet 58 is located below the sealed chamber 30, and lubricant is introduced into the sealed chamber 30 from the bottom. After the lubricant accumulates to a certain height in the sealed chamber 30, it overflows from the outlet 60 into the transfer channel 74. The transfer channel 74 comprises a horizontal section 63 for receiving the overflowing lubricant and an inclined redirecting section 64, the terminal end of which is aligned with the discharge port 52. A certain height difference h is defined between the outlet 60 and the inlet 58. Adjusting this height difference can adjust the flow rate of lubricant discharged from the backpressure chamber 26. A first bearing 79 supporting the orbiting scroll and a second bearing 80 supported between the bracket 18 and the main shaft 22 are housed within the sealed chamber 30. The outlet 60 is positioned at a height between 1 / 3 and 2 / 3 of the diameter of the second bearing 80. The lubricant can fully lubricate the bearings while the pressure in the sealing cavity 30 is not very high.

[0050] In the illustrated embodiment, there is one output port 60 and one drain port 52. In other embodiments, there may be two output ports and two drain ports. One output port 60 is located at a relatively low elevation, such as approximately at the 4 o'clock position in the figure, and most of the lubricant is discharged from this output port 60. The other output port is located at a relatively high elevation, such as approximately at the 12 o'clock position. This higher elevation is used to collect a small amount of lubricant that is thrown above the backpressure chamber due to oscillation within the backpressure chamber.

[0051] Lubricant circulates in the compressor. Figure 6 The lubricant flow path is shown using arrows, where solid arrows indicate lubricant flow in Figure 6 The cross section of the compressor shown is shown, and the dotted arrows indicate that the lubricant flows on other cross sections. The pressurized refrigerant flow discharged from the discharge port 44 passes through the separator 66 provided in the cover 14. The pressurized refrigerant flow entrains the lubricant, and the separator 66 separates the gaseous refrigerant. The remaining lubricant then passes through the filter 68 under high pressure to remove impurities mixed into the lubricant flow during the lubrication process. The fixed scroll provides a channel to set the filter 68. The channel outlet 72 is aligned with the inlet on the intermediate disk. The lubricant then passes through the inlet 54 ( Figure 4 ) and the delivery channel 62 into the back pressure chamber 26 ( Figure 5 ) to lubricate the bearings and other components. Then, the lubricant is transferred to the discharge port 52 ( Figure 5-6 When the drain port 52 is opened, the lubricant enters the low pressure area ( Figure 2), a portion of the lubricant participates in a new round of pressurization process together with the refrigerant newly entering the compression chamber, completing an internal cycle. The rest of the lubricant flows into other parts of the compressor, lubricating other parts of the compressor, and is recycled back to the low-pressure area of ​​the compressor.

[0052] While specific embodiments of the present application have been shown and described in detail to illustrate the principles of the present application, it will be appreciated that the present application may be embodied in other ways without departing from such principles.

Claims

1. A compressor characterized by include: a bracket (18) supporting a main shaft (22); A static vortex (20) is arranged relative to the bracket (18), and the static vortex (20) has a static vortex wall (34) and a static base plate (36); a movable scroll (25) located between the bracket (18) and the fixed scroll (20) and movable relative to both, the movable scroll (25) having a movable scroll wall (38) and a movable base plate (40), the movable scroll wall (38) meshing with the fixed scroll wall (34), the movable base plate (40) having a scroll wall side (29) and a back side (31), the scroll wall side (29) being opposite to the fixed base plate (36), a sealed cavity (30) being provided between the back side (31) and the bracket (18), the sealed cavity (30) being communicated with a lubricant circuit, lubricant being input into the sealed cavity (30), and a back pressure being provided in the sealed cavity (30) for maintaining contact between the movable scroll wall (38) and the fixed base plate (36); The sealing chamber (30) transports lubricant out of the sealing chamber (30) through a transfer channel (74), and the transfer channel (74) has an outlet (76), which is located on the first side (28) of the bracket (18) facing the back side (31) and connects to the chamber (78) between the bracket (18) and the fixed scroll (20).

2. The compressor according to claim 1, wherein: The outlet (76) is positioned at a first distance (d1) from the axis (1) of the main shaft so that the outlet (76) is closed by periodic obstruction of the orbiting scroll (25) during movement.

3. The compressor according to claim 1 or 2, characterized in that: The cavity (78) between the bracket (18) and the static scroll (20) is located at the radially outermost side of the internal space of the static scroll (20); The outlet (76) is connected to a suction chamber when opened, wherein the suction chamber is about to be closed to form a compression chamber.

4. The compressor according to claim 2, wherein: The closing time period of the outlet (76) in a single cycle is adjusted by setting the size of the first distance (d1).

5. The compressor according to claim 1, wherein: The movable vortex wall (38) and the fixed vortex wall (34) each have a starting end close to the center and a terminal end far from the center, and the outlet is located close to the terminal end of the movable vortex wall (38) and / or the fixed vortex wall (34).

6. The compressor according to claim 4, characterized in that: The invention also includes an intermediate piece (24) fixed on the bracket (18), a discharge port (52) is arranged on the intermediate piece (24), and the transfer channel (74) is arranged in the bracket (18) and aligned with the discharge port (52).

7. The compressor according to claim 6, characterized in that: The back side (31) is provided with a sealing member (42) to keep the movable base plate (40) in contact with the intermediate plate (24); the movable track of the sealing member (42) on the intermediate plate (24) forms a ring area (56); and the discharge port (52) is located in the ring area (56).

8. The compressor according to claim 6, characterized in that: The sealed cavity (30) is provided with an input port (58) through which lubricant enters and an output port (60) through which lubricant leaves. The sealed cavity (30) accommodates a first bearing (79) for supporting the movable scroll (25) and a second bearing (80) supported between the bracket (18) and the main shaft (22). The input port (58) is located below the sealed cavity (30), and the output port (60) is arranged at a height between 1 / 3 and 2 / 3 of the diameter of the second bearing (80) relative to the sealed cavity (30).

9. The compressor according to claim 8, characterized in that: The transfer channel (74) includes a horizontal section (63) for receiving overflow lubricant and an inclined redirecting section (64).

10. The compressor according to claim 8, characterized in that The compressor further comprises: Housing (12); a cover (14) connected to the housing (12), the cover (14) being provided with a separator (66) communicating with a discharge port (44) for passing compressed refrigerant; a receiving chamber (16) defined by the cover (14) and the housing (12), wherein the bracket (18) and the fixed scroll (20) are fixed in the receiving chamber (16); The fixed vortex (20) is provided with a filter (68) to receive lubricant from the separator (66), an inlet (54) is arranged on the intermediate plate (24), and the inlet (54) is configured to align with a channel outlet (72) in the fixed vortex (20) for fixing the filter (68), and a delivery channel (62) is provided in the bracket (18), and the delivery channel (62) is connected between the inlet (54) and the input port (58).

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