Rotating scroll compressor

Abstract

The present invention relates to a rotary scroll compressor in the technical field of compressors, and includes a scroll compressor structure and a drive motor. The scroll compressor structure includes a compressor housing (5), a driving scroll plate (7), a driven scroll plate (9), a transmission slip ring (8), and an exhaust shaft (10) installed in the compressor housing (5). The drive motor includes a motor housing (3), a drive shaft (63), a rotor (62), and a stator (61) installed in the motor housing (3). The compressor housing (5) has a side end cover (4). The scroll compressor is connected to the motor housing 3 via a rotary shaft 63, the phase difference between the driving scroll plate 7 and the driven scroll plate 9 is 180°, the rotor 62 and the driving scroll plate 7 are connected to a drive shaft 63, the rotor 62 and the stator 61 rotate relative to each other, a transmission slip ring 8 is disposed between the driving scroll plate 7 and the driven scroll plate 9, the driven scroll plate 9 is connected to an exhaust shaft 10, and the exhaust shaft 10 is rotatably connected to the compressor housing 5. The rotary scroll compressor can increase the operating speed of the compressor, reduce the compressor volume, and improve the operating efficiency of the compressor.

Description

[Technical Field]

[0001] The present invention relates to the technical field of compressors, and more particularly to rotary scroll compressors. [Background technology]

[0002] Scroll compressors offer advantages such as simple structure, smooth operation, low noise, and high mechanical and volumetric efficiency. They are widely used in a variety of fields, including industry and daily life. The movable and fixed scrolls of a scroll compressor are opposed to each other at a 180° angle and offset to a specific orbital radius. The movable scroll is driven by a crankshaft whose orbital radius and eccentric radius match, achieving orbital translation. As the movable scroll moves, it engages with the fixed scroll, forming multiple pairs of crescent-shaped sealed working chambers with continuously variable volumes. From the inside to the outside, they are the first compression chamber (center chamber), the second compression chamber, and the third compression chamber (intake chamber). When the compressor is operating, the volume of the compression chambers changes according to the rotation angle of the main shaft. Upon completion of compression, the second compression chamber connects to the center chamber and discharges gas through the exhaust port. The working fluid undergoes three processes within the crescent-shaped sealed working chambers: intake, compression, and exhaust.

[0003] Currently, when the movable scroll of a revolutionary scroll compressor moves in translation, a large amount of imbalance occurs, resulting in vibration and noise. Scroll compressors for car air conditioners must achieve performance indicators such as compact size, high pressure ratio, low noise, and high efficiency. Specific methods for achieving these include increasing the compressor rotation speed and reducing the amount of scroll imbalance. However, due to limitations on the operating mode of revolutionary scroll compressors, it is difficult to simultaneously increase speed and reduce the amount of imbalance. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary scroll compressor that solves the problems in the prior art, and that can increase the operating speed of the compressor, reduce the size of the compressor, and improve the operating efficiency of the compressor. [Means for solving the problem]

[0005] To achieve the above objectives, the present invention provides the following solutions:

[0006] The present invention provides a rotary scroll compressor, which includes a scroll compressor structure and a drive motor. The scroll compressor structure includes a compressor housing, a driving scroll plate, a driven scroll plate, a transmission slip ring, and an exhaust shaft installed in the compressor housing. The drive motor includes a motor housing, a drive shaft installed in the motor housing, a rotor, and a stator. The compressor housing is connected to the motor housing via a side end cover. The driving scroll plate and the driven scroll plate have a phase difference of 180°. The rotor and the driving scroll plate are connected to the drive shaft, respectively, and the rotor and the stator rotate relative to each other. The transmission slip ring is disposed between the driving scroll plate and the driven scroll plate. The driven scroll plate is connected to the exhaust shaft, and the exhaust shaft is rotatably connected to the compressor housing.

[0007] Preferably, the driven scroll plate includes a first plate bottom, a first scroll wrap, a first driving friction part, a second driving friction part, a first driving part, and a second driving part, the first scroll wrap, the first driving friction part, and the second driving friction part are all installed on the first plate bottom, the first driving friction part and the second driving friction part are all located outside the first scroll wrap, the first driving friction part and the second driving friction part are arranged opposite to each other, the first driving part is installed on the first driving friction part, the second driving part is installed on the second driving friction part, the first driving part and the second driving part are arranged opposite to each other, and the driven scroll plate is , a second plate bottom, a second scroll wrap, a first driven friction part, a second driven friction part, a first driven part, and a second driven part, wherein the second scroll wrap, the first driven friction part, and the second driven friction part are all installed on the second plate bottom, an exhaust hole is installed on the second plate bottom, and the exhaust hole is connected to the exhaust shaft, the first driven friction part and the second driven friction part are both located outside the second scroll wrap, the first driven friction part and the second driven friction part are arranged opposite to each other, the first driven part is installed on the first driven friction part, and the second driven part is installed on the second driven friction part, and the first driven part and the second driven part are arranged opposite to each other.

[0008] Preferably, two first mating portions are formed at one end of the transmission slip ring, and the two first mating portions are arranged opposite to each other. The two first mating portions are mated with the first driving portion and the second driving portion, respectively. The two first mating portions divide the end surface of one end of the transmission slip ring into a first friction surface and a second friction surface, and the first friction surface contacts the first driving friction surface of the first driving friction portion, and the second friction surface contacts the second driving friction surface of the second driving friction portion. The other end of the transmission slip ring has two second mating portions formed thereon, the two second mating portions facing each other, and mating with the first driven portion and the second driven portion, respectively. The two second mating portions divide the end face of the other end of the transmission slip ring into a third friction surface and a fourth friction surface, the third friction surface contacting the first driven friction surface of the first driven friction portion, and the fourth friction surface contacting the second driven friction surface of the second driven friction portion.

[0009] Preferably, the first driving part and the second driving part are bosses and the first matching part is a slide groove, or the first driving part and the second driving part are slide grooves and the first matching part is a boss.

[0010] Preferably, the first follower and the second follower are bosses and the second matching part is a slide groove, or the first follower and the second follower are slide grooves and the second matching part is a boss.

[0011] Preferably, a motor end cover is further installed on a lower part of the motor housing, the space enclosed by the compressor housing and the side end cover is a compressor chamber, the space enclosed by the side end cover, the motor housing, and the motor end cover is a motor chamber, an intake hole is opened in the motor housing, and a plurality of air holes are opened in the side end cover for communicating the motor chamber with the compressor chamber, one end of the drive shaft is rotatably connected to the side end cover, the other end of the drive shaft is rotatably connected to the motor end cover, and a lock nut is installed on the other end of the drive shaft.

[0012] Preferably, the scroll compressor structure further includes a compressor outlet end cover, an exhaust port is provided on the compressor outlet end cover, the compressor outlet end cover is connected to the compressor housing, an exhaust chamber is formed between the compressor outlet end cover and the compressor housing, the inside of the exhaust shaft is hollow, one end of the exhaust shaft can communicate with the exhaust chamber and the other end of the exhaust shaft can communicate with the compressor chamber, a check device is provided in the exhaust chamber, and the check device is disposed at one end of the exhaust shaft.

[0013] Preferably, a plurality of transmission slip ring vent holes are formed in the side wall of the transmission slip ring, and the transmission slip ring vent holes are for communicating the compressor chamber with the exhaust shaft.

[0014] Preferably, a backplate gap exists between the back portion of the driven scroll plate and the compressor housing.

[0015] Preferably, the surfaces of the driving scroll plate, the driven scroll plate and the transmission slip ring are all provided with a self-lubricating coating. [Effects of the Invention]

[0016] Compared with the prior art, the present invention achieves the following technical advantages: In the present invention, the drive shaft rotates the driving scroll plate, which rotates the transmission slip ring, which rotates the driven scroll plate. The transmission slip ring always limits the relative speed between the driving scroll plate and the driven scroll plate to zero under various operating conditions, thereby maintaining a constant relative phase difference between the driving scroll plate and the driven scroll plate. Because the driving scroll plate and the driven scroll plate of the present invention are both rotating scroll plates, the amount of imbalance generated by the movement of the scroll plates is reduced, thereby reducing the vibration and noise generated by the operation of the compressor. At the same time, the amount of imbalance generated by the rotating parts of the entire shaft system is small, allowing the scroll compressor to operate at high speeds. [Brief explanation of the drawings]

[0017] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings that need to be used in the embodiments. Obviously, the drawings in the following description are only several embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts.

[0018] [Figure 1] 1 is a cross-sectional view of a rotary scroll compressor according to the present invention. [Figure 2] 1 is a schematic external view of a rotary scroll compressor according to the present invention; [Figure 3] FIG. 2 is a schematic view of a driving scroll plate of the present invention. [Figure 4] FIG. 2 is a schematic diagram of a driven scroll plate of the present invention. [Figure 5] 1 is a schematic diagram of a transmission slip ring of the present invention. [Figure 6] 1 is a schematic diagram of a side end cover of the present invention. [Figure 7] FIG. 2 is a schematic diagram of a backplate gap of the present invention. [Figure 8] FIG. 2 is a front view of the check device of the present invention. [Figure 9] FIG. 2 is a side view of the check device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following provides a clear and complete description of the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative efforts fall within the scope of protection of the present invention.

[0020] SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary scroll compressor that solves the problems in the prior art, and that can increase the operating speed of the compressor, reduce the size of the compressor, and improve the operating efficiency of the compressor.

[0021] In order to make the above objects, features and advantages of the present invention more apparent and comprehensible, the present invention will be described in more detail below with reference to the drawings and detailed description of the invention.

[0022] As shown in FIGS. 1 to 9, this embodiment provides a rotary scroll compressor, which includes a scroll compressor structure and a drive motor. The scroll compressor structure includes a compressor housing 5, a driving scroll plate 7, a driven scroll plate 9, a transmission slip ring 8, and an exhaust shaft 10 installed in the compressor housing 5. The drive motor includes a motor housing 3, a drive shaft 63, a rotor 62, and a stator 61 installed in the motor housing 3. The compressor housing 5 is connected to the motor housing 3 through a side end cover 4. A compression chamber is formed between the driving scroll plate 7 and the driven scroll plate 9. The driving scroll plate 7 and the driven scroll plate 9 rotate around their respective central rotation axes. There is a certain eccentric distance between the central rotation axis of the driving scroll plate 7 and the central rotation axis of the driven scroll plate 9. The eccentric distance is equal to the design rotation radius of the driving scroll plate 7 and the driven scroll plate 9. The driving scroll plate 7 drives the driven scroll plate 9 to rotate at the same speed via a transmission slip ring 8, and the phase difference between the driving scroll plate 7 and the driven scroll plate 9 is always maintained at 180°. The rotor 62 and the driving scroll plate 7 are respectively connected to a drive shaft 63. The rotor 62, the driving scroll plate 7 and the drive shaft 63 are coaxially arranged. The driving scroll plate 7 is connected to the drive shaft 63 via a transmission key 631. The rotor 62 and the stator 61 rotate relative to each other. The transmission slip ring 8 is disposed between the driving scroll plate 7 and the driven scroll plate 9. The driven scroll plate 9 is connected to an exhaust shaft 10 by a fastener. The exhaust shaft 10 is rotatably connected to the compressor housing 5 by a first bearing 1001. The first bearing 1001 is a deep groove ball bearing. A first skeletal seal ring 1002 is installed between the end face of the first bearing 1001 and the compressor housing 5.

[0023] Specifically, in this embodiment, the driving scroll plate 7 includes a first plate bottom, a first scroll wrap, a first driving friction part, a second driving friction part, a first driving part 701, and a second driving part 703. The first scroll wrap, the first driving friction part, and the second driving friction part are all installed on the first plate bottom. A driving scroll plate seal groove 705 extending along the shape line of the first scroll wrap is installed on the upper part of the first scroll wrap. A seal strip is housed within 05, and the seal strip contacts the bottom of the second plate of the driven scroll plate 9. The first and second main friction portions are both arranged outside the first scroll wrap, and the first and second main friction portions are arranged opposite each other. The first main friction portion 701 is installed on the first main friction portion, and the second main friction portion 703 is installed on the second main friction portion, and the first and second main friction portions 701 and 703 are arranged opposite each other.

[0024] In this embodiment, the driven scroll plate 9 includes a second plate bottom, a second scroll wrap, a first driven friction part, a second driven friction part, a first driven part 901, and a second driven part 903. The second scroll wrap, the first driven friction part, and the second driven friction part are all installed on the bottom of the second plate. An exhaust hole is installed on the bottom of the second plate, and the exhaust hole is connected to the exhaust shaft 10. In the structure of the scroll compressor, the compressed gas enters the exhaust shaft 10 through the exhaust hole and is discharged. The upper part of the second scroll wrap is provided with a driven scroll extending along its shape line. A driven scroll plate seal groove 905 is installed, a seal strip is housed in the driven scroll plate seal groove 905, the seal strip contacts the first plate bottom of the driving scroll plate 7, the first driven friction portion and the second driven friction portion are both arranged outside the second scroll wrap, the first driven friction portion and the second driven friction portion are arranged opposite each other, the first driven portion 901 is installed on the first driven friction portion, the second driven portion 903 is installed on the second driven friction portion, and the first driven portion 901 and the second driven portion 903 are arranged opposite each other.

[0025] In this embodiment, the first scroll wrap of the driving scroll plate 7 and the second scroll wrap of the driven scroll plate 9 both adopt a multi-dimensional conjugate curved surface spiral wrap structure.

[0026] In this embodiment, two first mating portions 801 are provided at one end of the transmission slip ring 8, and the two first mating portions 801 are arranged opposite each other. The two first mating portions 801 are respectively mated with the first driving portion 701 and the second driving portion 703 to transmit power. The two first mating portions 801 divide the end surface of one end of the transmission slip ring 8 into a first friction surface 803 and a second friction surface 804. The first friction surface 803 contacts the first driving friction surface 702 of the first driving friction portion, and the second friction surface 804 contacts the second driving friction surface 704 of the second driving friction portion. The other end of the transmission slip ring 8 is provided with two second mating portions 802. The two first matching portions 802 are arranged opposite each other, and the two second matching portions 802 are respectively matched with the first driven portion 901 and the second driven portion 903 to transmit power. The two second matching portions 802 divide the other end face of the transmission slip ring 8 into a third friction surface 805 and a fourth friction surface 806, with the third friction surface 805 contacting the first driven friction surface 902 of the first driven friction portion and the fourth friction surface 806 contacting the second driven friction surface 904 of the second driven friction portion. A plurality of transmission slip ring vent holes 807 are drilled in the side wall of the transmission slip ring 8, and the transmission slip ring vent holes 807 are for connecting the compressor chamber and the exhaust shaft 10.

[0027] In this embodiment, the first driving part 701 and the second driving part 703 are bosses, the first matching part 801 is a slide groove, the first driving part 701 and the second driving part 703 slide in the corresponding first matching part 801, the first driving part 701 and the second driving part 703 cooperate with the corresponding first matching part 801 to transmit power, the transmission slip ring 8 translates and rotates in the direction of the first driving part 701 or the second driving part 703-first matching part 801, and the first driven part 901 and the second driven part 903 are bosses. The second matching portion 802 is a sliding groove, and the first driven portion 901 and the second driven portion 903 slide within the corresponding second matching portion 802, respectively. The first driven portion 901 and the second driven portion 903 cooperate with the corresponding second matching portion 802 to transmit power. The transmission slip ring 8 translates and rotates in the direction of the first driven portion 901 or the second driven portion 903-second matching portion 802, and the transmission slip ring 8 is driven to rotate around a rotation axis having an eccentric distance with respect to the driving scroll plate 7. The transmission slip ring 8 always limits the relative speed between the driving scroll plate 7 and the driven scroll plate 9 to zero under various operating conditions, thereby maintaining a constant relative phase difference between the driving scroll plate 7 and the driven scroll plate 9.

[0028] In this embodiment, the surfaces of the driving scroll plate 7, the driven scroll plate 9, and the transmission slip ring 8 are all coated with a self-lubricating coating, which enables the entire machine to achieve oil-free self-lubrication and solves the problem of miscibility between the lubricant and the working fluid.

[0029] In this embodiment, a motor end cover 2 is further installed at the bottom of the motor housing 3, the space surrounded by the compressor housing 5 and the side end cover 4 is the compressor chamber, and the space surrounded by the side end cover 4, motor housing 3, and motor end cover 2 is the motor chamber, which also functions as an intake chamber, an intake hole is opened at the bottom of the motor housing 3, and a plurality of air vents 402 are opened in the side end cover 4 to communicate between the motor chamber and the compressor chamber, A bearing seat 401 that fits the second bearing 632 is installed in the center of the side end cover 4, one end of the drive shaft 63 is rotatably connected to the side end cover 4 via the second bearing 632, and the other end of the drive shaft 63 is rotatably connected to the motor end cover 2 via a third bearing 633, both of which are deep groove ball bearings. A lock nut 634 is threadedly connected to the other end of the drive shaft 63, and a second skeletal seal ring 635 is installed between the lock nut 634 and the third bearing 633.

[0030] In this embodiment, a controller housing 101 and a controller cover 102 are installed below the motor end cover 2, the other end of the drive shaft 63 and the lock nut 634 are arranged between the motor end cover 2 and the controller housing 101, and the motor controller is arranged between the controller housing 101 and the controller cover 102.

[0031] In this embodiment, the scroll compressor structure further includes a compressor outlet end cover 11, an exhaust port is installed in the compressor outlet end cover 11, the compressor outlet end cover 11 is connected to the compressor housing 5, an exhaust chamber is formed between the compressor outlet end cover 11 and the compressor housing 5, the inside of the exhaust shaft 10 is hollow, one end of the exhaust shaft 10 can communicate with the exhaust chamber, and the other end of the exhaust shaft 10 can communicate with the compressor chamber, a check device 501 is installed in the exhaust chamber, the check device 501 is disposed at one end of the exhaust shaft 10, and the check device 501 is a conventional technology.

[0032] In this embodiment, the intake chamber, the compression chamber, and the exhaust chamber form the working chambers.

[0033] In this embodiment, there is a low-pressure chamber a between the transmission slip ring 8 and the driven scroll plate 9, and a high-pressure chamber c inside the exhaust shaft 10. The actual operating pressure of the compressor will vary to some extent depending on the operating conditions of different systems. For example, when the refrigerant is R134a, the pressure in the low-pressure chamber a is 0.2 MPa, and the pressure in the high-pressure chamber c is 1.5 MPa. To prevent excessive axial load from being applied to the driven scroll plate 9, which may significantly shorten the service life of or damage the first bearing 1001, a micro-back-plate gap technology is adopted at the back of the driven scroll plate 9. That is, there is a back-plate gap b between the back of the driven scroll plate 9 and the compressor housing 5. The actual operating pressure of the compressor will vary to some extent depending on the operating conditions of different systems. The size of the back-plate gap b needs to be adjusted according to the pressures in the high-pressure chamber c and the low-pressure chamber a. For example, when the refrigerant is R134a, the size of the back-plate gap b is 0.5 mm, and the average pressure of the back-plate gap b is 0.8 MPa. In this embodiment, a back plate gap b is formed between the back portion of the driven scroll plate 9 and the compressor housing 5, thereby controlling the amount of leakage and suppressing the axial force of the driven scroll plate 9, thereby preventing a reduction in the lifespan of and damage to the first bearing 1001.

[0034] In this embodiment, the driving scroll plate 7 and the driven scroll plate 9 are connected and transmitted by the transmission slip ring 8. The driving scroll plate 7 and the driven scroll plate 9 rotate at the same speed around their respective rotation axes, and the distance between the two axes is the designed eccentricity distance of the compressor. The drive shaft 63 rotates the driving scroll plate 7, which rotates the transmission slip ring 8, which rotates the driven scroll plate 9.

[0035] In this embodiment, the compressor outlet end cover 11, the compressor housing 5, the side end cover 4 and the motor housing 3 are detachably connected by bolts, and the motor housing 3, the motor end cover 2, the controller housing 101 and the controller cover 102 are detachably connected by bolts.

[0036] In this embodiment, because the refrigerant pressure in the vehicle air conditioning system is relatively high, sealing strips are installed between the side end cover 4 and the compressor housing 5, between the side end cover 4 and the motor housing 3, and between the motor housing 3 and the motor end cover 2. For example, a side end cover sealing groove 403 is opened in the side end cover 4, a motor end cover sealing groove is opened in the motor end cover 2, and sealing strips are installed in the side end cover sealing groove 403 and the motor end cover sealing groove, respectively. The installation of the sealing strips effectively solves the problem of working fluid leakage that occurs during compressor operation.

[0037] When the rotary scroll compressor of this embodiment is operating, the driving scroll plate 7 and the driven scroll plate 9 rotate at the same speed around their respective central rotation axes, with a certain eccentricity between the central rotation axes of the driving scroll plate 7 and the driven scroll plate 9. The relative motion between the transmission slip ring 8 and the driving scroll plate 7 and the driven scroll plate 9 is a linear translational motion in the direction of the first driving section 701 or the second driving section 703-first matching section 801. The driven motion of the transmission slip ring 8 is the fixed rotation of the driving scroll plate 7, so the absolute motion of the transmission slip ring 8 is a composite motion of the relative motion and the driven motion. When the driving scroll plate 7 and the driven scroll plate 9 rotate at the same speed with a certain eccentricity, the relative angular velocity of one scroll plate (driving scroll plate 7) as the reference scroll plate is always zero, but the direction of the eccentricity is constantly changing. In other words, the reference scroll plate (driver scroll plate 7) is fixed, and the other scroll plate (follower scroll plate 9) moves in a translational manner around a fixed eccentric distance, which is the same as the motion method of an orbital scroll compressor.

[0038] The rotary scroll compressor of this embodiment uses a working medium to cool the drive motor. The working medium flows through an intake port in the motor housing 3, enters the motor chamber to absorb heat, then enters the compressor chamber through the vent 402 in the end cover 4, and enters the scroll compressor working chamber through the transmission slip ring vent 807 in the transmission slip ring 8. After being compressed by the scroll compressor structure, it is discharged through the exhaust shaft 10. A check device 501 in the compressor housing 5 prevents the working medium from flowing back due to pressure pulsations during the compression process.

[0039] The rotary scroll compressor of this embodiment does not require a dynamic balance weight, breaks through the speed limit, reduces the compressor discharge volume below a certain mass flow rate, and reduces the overall machine volume. Compared with conventional revolution scroll compressors, the aerodynamic loss in the working chamber is low, especially the compression chamber has a low momentum compression process, the exhaust chamber has a certain clearance volume, the exhaust throttling loss is small, the isentropic compression efficiency and volumetric efficiency are high, and the operating speed and operating efficiency of the compressor are increased.

[0040] Because the driving scroll plate 7 and the driven scroll plate 9 of the present invention are both rotating scroll plates, the amount of unbalance generated by the movement of the scroll plates is reduced, thereby reducing the vibration and noise generated by the operation of the compressor. At the same time, the amount of unbalance generated by the rotating parts of the entire shaft system is small, allowing the scroll compressor to operate at high speeds. Under a constant mass flow rate, increasing the design speed of the scroll compressor can shorten the design scroll shape line on the scroll plates, thereby reducing the radii of the scroll plates (driving scroll plate 7 and driven scroll plate 9) and reducing the overall volume of the scroll compressor.

[0041] In the rotary scroll compressor of the present invention, the scroll wrap wall surfaces on both sides of the compression chamber move during operation, which reduces friction loss between the working fluid and the compression chamber during operation and improves the operating efficiency of the scroll compressor, compared to the revolution scroll compressor.

[0042] The present invention employs a centrally mounted transmission slip ring 8, i.e., the transmission slip ring 8 is disposed between the driving scroll plate 7 and the driven scroll plate 9, which effectively improves the stability of the transmission slip ring 8 during high-speed operation and also improves the structural durability of the transmission slip ring 8. At the same time, the transmission slip ring 8 maintains an appropriate axial gap between the driving scroll plate 7 and the driven scroll plate 9, preventing the top and bottom of the wraps of the driving scroll plate 7 and the driven scroll plate 9 from colliding with each other during operation, which would cause deformation of the scroll wraps.

[0043] In the present invention, an air intake hole is provided at the bottom of the motor housing 3, which allows the motor to be effectively cooled without the need for any other cooling device, significantly reducing the motor volume and system complexity and improving the operational reliability of the motor.

[0044] The present invention employs a self-lubricating coating that effectively lubricates the driving scroll plate 7, the driven scroll plate 9, and the transmission slip ring 8, while reducing the meshing clearance between the driving scroll plate 7 and the driven scroll plate 9, thereby reducing leakage and improving compression efficiency.

[0045] In this specification, specific examples are used to explain the principles and embodiments of the present invention, and the description of the above examples is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there are changes in the form and application scope of the invention according to the idea of ​​the present invention. In summary, the contents of this specification should not be understood as limiting the present invention. [Explanation of symbols]

[0046] 101-Controller Housing 102-Controller Cover 2-Motor end cover 3-Motor housing 4-Side End Cover 401-bearing seat 402-Ventilation hole 403-Side end cover seal groove 5-Compressor housing 501-Check Device 61-Stator 62-Rotor 63-Drive shaft 631-Transmission Key 632-2nd bearing 633-3rd bearing 634-Lock Nut 635-Second Skeleton Seal Ring 7-Driven scroll plate 701-1st moving part 702-1st driving friction surface 703-2nd active part 704-Second active friction surface 705-Driven scroll plate seal groove 8-Transmission Slip Ring 801-1st Matching Section 802 - Second matching section 803-1st friction surface 804-Second friction surface 805-Third friction surface 806-4th friction surface 807-Transmission slip ring vent 9-Driven scroll plate 901-1st driven part 902-1st driven friction surface 903-Second driven part 904-Second driven friction surface 905-Driven scroll plate seal groove 10-Exhaust shaft 1001-1st bearing 1002-1st skeleton seal ring 11-Compressor outlet end cover a-Low pressure chamber b - Backplate gap c-hypertensive chamber

Claims

1. A rotary scroll compressor including a scroll compressor structure and a drive motor, The scroll compressor structure includes a compressor housing, a driving scroll plate, a driven scroll plate, a transmission slip ring, and an exhaust shaft installed in the compressor housing; The drive motor includes a motor housing, a drive shaft, a rotor, and a stator installed in the motor housing; the compressor housing is connected to the motor housing via a side end cover; The phase difference between the driving scroll plate and the driven scroll plate is 180°, the rotor and the driving scroll plate are each connected to the drive shaft; The rotor and the stator rotate relative to each other, the transmission slip ring is disposed between the driving scroll plate and the driven scroll plate; the driven scroll plate is connected to the exhaust shaft; the exhaust shaft is rotatably connected to the compressor housing; A rotary scroll compressor characterized by the above.

2. The driving scroll plate includes a first plate bottom, a first scroll wrap, a first driving friction part, a second driving friction part, a first driving part, and a second driving part; the first scroll wrap, the first main dynamic friction portion, and the second main dynamic friction portion are all installed on the bottom of the first plate; the first main dynamic friction portion and the second main dynamic friction portion are both located outside the first scroll wrap, the first main dynamic friction portion and the second main dynamic friction portion are disposed opposite to each other, the first driving part is installed on the first driving friction part, the second driving part is installed on the second driving friction part, the first driving part and the second driving part are disposed opposite to each other, the driven scroll plate includes a second plate bottom, a second scroll wrap, a first driven friction portion, a second driven friction portion, a first driven portion, and a second driven portion; the second scroll wrap, the first driven friction portion, and the second driven friction portion are all installed on the bottom of the second plate; An exhaust hole is provided at the bottom of the second plate; the exhaust hole communicates with the exhaust shaft; the first driven friction portion and the second driven friction portion are both located outside the second scroll wrap, the first driven friction portion and the second driven friction portion are disposed opposite to each other, the first driven part is disposed on the first driven friction part; the second driven part is disposed on the second driven friction part; The first follower and the second follower are disposed opposite to each other.

2. The rotary scroll compressor according to claim 1.

3. One end of the transmission slip ring is provided with two first matching portions; The two first matching portions are disposed opposite to each other, The two first matching parts are respectively matched to the first driving part and the second driving part; The two first matching portions divide an end surface of one end of the transmission slip ring into a first friction surface and a second friction surface; the first friction surface contacts the first main dynamic friction surface of the first main dynamic friction portion, the second friction surface contacts the second main dynamic friction surface of the second main dynamic friction portion, The other end of the transmission slip ring is provided with two second matching portions; The two second matching portions are disposed opposite each other, the two second matching portions are matched to the first follower portion and the second follower portion, respectively; the two second matching portions divide the other end surface of the transmission slip ring into a third friction surface and a fourth friction surface; the third friction surface contacts the first driven friction surface of the first driven friction portion, the fourth friction surface contacts the second driven friction surface of the second driven friction portion; 3. The rotary scroll compressor according to claim 2.

4. the first driving portion and the second driving portion are bosses, the first matching part is a slide groove, or the first driving part and the second driving part are slide grooves; The first matching part is a boss.

4. The rotary scroll compressor according to claim 3.

5. the first follower and the second follower are bosses, the second matching portion is a slide groove, or the first follower portion and the second follower portion are slide grooves; the second matching part is a boss; 4. The rotary scroll compressor according to claim 3.

6. A motor end cover is further installed at the bottom of the motor housing, a space surrounded by the compressor housing and the side end cover is a compressor chamber, a space surrounded by the side end cover, the motor housing, and the motor end cover is a motor chamber, The motor housing has an intake hole, The side end cover has a plurality of vent holes for communicating the motor chamber with the compressor chamber, One end of the drive shaft is rotatably connected to the side end cover, the other end of the drive shaft is rotatably connected to the motor end cover, A lock nut is installed on the other end of the drive shaft.

2. The rotary scroll compressor according to claim 1.

7. the scroll compressor structure further includes a compressor outlet end cover; An exhaust port is provided in the compressor outlet end cover, the compressor outlet end cover is connected to the compressor housing; A discharge chamber is formed between the compressor outlet end cover and the compressor housing, The inside of the exhaust shaft is hollow, One end of the exhaust shaft can communicate with the exhaust chamber, the other end of the exhaust shaft can communicate with the compressor chamber, A check device is installed in the exhaust chamber, The check device is disposed at one end of the exhaust shaft.

7. The rotary scroll compressor according to claim 6.

8. A plurality of transmission slip ring ventilation holes are formed in the side wall of the transmission slip ring; The vent hole of the transmission slip ring is for communicating the compressor chamber with the exhaust shaft.

7. The rotary scroll compressor according to claim 6.

9. a backplate gap exists between the back portion of the driven scroll plate and the compressor housing; 2. The rotary scroll compressor according to claim 1.

10. 2. The rotary scroll compressor according to claim 1, wherein the surfaces of the driving scroll plate, the driven scroll plate and the transmission slip ring are all provided with a self-lubricating coating.

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