Scroll compressor and refrigeration cycle device

Abstract

A scroll compressor has: a hermetic container; a compression mechanism portion provided inside the hermetic container, having a compression chamber that compresses refrigerant by intermeshing fixed scroll teeth of a fixed scroll member and oscillating scroll teeth of an oscillating scroll member; a rotary shaft provided inside the hermetic container, driving the oscillating scroll member to revolve; a motor provided inside the hermetic container, driving the rotary shaft to rotate; a supercharging mechanism provided inside the hermetic container, having a turbine that rotates by refrigerant discharged from the compression chamber, an impeller that rotates with rotation of the turbine, and a link shaft that has the turbine linked at one end side and has the impeller linked at the other end side, the fixed scroll member being formed with a discharge flow path through which the refrigerant discharged from the compression chamber of the compression mechanism portion flows and a suction flow path through which the refrigerant sucked into the hermetic container flows, the turbine of the supercharging mechanism being disposed in the discharge flow path, the impeller of the supercharging mechanism being disposed in the suction flow path, and the link shaft of the supercharging mechanism being rotatably supported to the fixed scroll member.

Description

Technical Field

[0001] This disclosure relates to scroll compressors and refrigeration cycle devices, and particularly to scroll compressors and refrigeration cycle devices equipped with a booster mechanism. Background Technology

[0002] Patent Document 1 discloses a structure in which a turbocharger is assembled in a compressor. The turbocharger of Patent Document 1 includes: a housing, a motor, a rotor, rotating vanes, a turbocharger, a shaft, and a discharge pipe. The housing includes: a motor, rotating vanes, a turbocharger, a main housing on which the shaft is disposed, and a secondary housing on which the rotor is disposed. The main housing and the secondary housing are fixed to each other. A partition wall is provided within the main housing. By providing the partition wall within the main housing, a motor chamber and a receiving chamber are formed within the main housing. The shaft is rotatably supported by the partition wall, a rotating vane housed in the receiving chamber is fixed to one end of the shaft, and a turbocharger housed in the motor chamber is fixed to the other end of the shaft.

[0003] Additionally, a motor is housed in the motor chamber, and a rotor is housed in the sub-housing. An outlet in the sub-housing and a connecting hole that communicates with the housing chamber of the main housing are connected via a discharge pipe. An outlet port communicating with the housing chamber and for discharging compressed gas is formed in the main housing. Additionally, an intake port communicating with the motor chamber and for drawing in intake gas from outside the main housing is formed in the main housing.

[0004] In this turbocharger configuration, the rotation of the motor causes the rotor to rotate. Gas compressed by the rotor within the secondary housing flows from the secondary housing's outlet through the exhaust pipe and via a connecting hole to the main housing's receiving chamber. The gas flowing into the main housing's receiving chamber via the connecting hole drives the rotating blades to rotate, and this gas is then discharged from the main housing's outlet. Conversely, intake gas flows in from the intake port, is pressurized by the turbocharger rotating with the rotating blades, becomes highly dense, and is drawn into the secondary housing.

[0005] Patent Document 1: Japanese Patent Application Publication No. 51-3445

[0006] The turbocharger in Patent Document 1 is constructed such that gas compressed by the rotor is introduced through an exhaust pipe located outside the main housing and blown onto the rotating blades. Therefore, the gas compressed by the rotor experiences pressure loss as it passes through the exhaust pipe, preventing the rotating blades from rotating efficiently. Summary of the Invention

[0007] The purpose of this disclosure is to provide a scroll compressor and a refrigeration cycle device that improve the efficiency of power recovery in a booster mechanism.

[0008] The scroll compressor disclosed herein comprises: a sealed container; a compression mechanism disposed inside the sealed container, having a compression chamber for compressing refrigerant by meshing fixed scroll teeth of a fixed scroll member with oscillating scroll teeth of an oscillating scroll member; a rotating shaft disposed inside the sealed container for driving the oscillating scroll member to rotate; an electric motor disposed inside the sealed container for driving the rotating shaft to rotate; and a pressurization mechanism disposed inside the sealed container and having: a turbine that rotates by means of the refrigerant discharged from the compression chamber. The fixed scroll member includes: an impeller that rotates with the turbine, and a connecting shaft connected to the turbine at one end and the impeller at the other end. It also includes: a discharge flow path for refrigerant discharged from the compression chamber of the compression mechanism; and a suction flow path for refrigerant drawn into the sealed container. The turbine of the booster mechanism is disposed in the discharge flow path, the impeller of the booster mechanism is disposed in the suction flow path, and the connecting shaft of the booster mechanism is rotatably supported on the fixed scroll member.

[0009] Furthermore, the refrigeration cycle apparatus of the present invention includes: the scroll compressor described above; a condenser that dissipates heat from the refrigerant compressed by the scroll compressor; a pressure reducer that reduces the pressure of the refrigerant flowing out of the condenser; and an evaporator that evaporates the refrigerant flowing out of the pressure reducer.

[0010] In the scroll compressor and refrigeration cycle device of the present invention, the turbine of the booster mechanism is disposed in the discharge flow path, and the impeller that rotates with the turbine is disposed in the suction flow path. The connecting shaft is supported on the fixed scroll component, thereby reducing pressure loss and improving the efficiency of power recovery of the booster mechanism. Attached Figure Description

[0011] Figure 1 This is a longitudinal sectional view of the scroll compressor according to Embodiment 1 of the present invention.

[0012] Figure 2 This is a cross-sectional view of the guide frame of the scroll compressor according to Embodiment 1 of the present invention.

[0013] Figure 3 This is a longitudinal sectional view of the rotor of the electric motor of the scroll compressor according to Embodiment 1 of the present invention.

[0014] Figure 4 This is a cross-sectional view of the rotor of the electric motor of the scroll compressor according to Embodiment 1 of the present invention.

[0015] Figure 5 This is a cross-sectional view of the stator of the motor of the scroll compressor according to Embodiment 1 of the present invention.

[0016] Figure 6 This is a side view of the booster mechanism of the scroll compressor according to Embodiment 1 of the present invention.

[0017] Figure 7 This is a longitudinal sectional view showing the case where the scroll compressor of Embodiment 1 of the present invention is equipped with a booster mechanism.

[0018] Figure 8 This is a schematic structural diagram of a refrigeration cycle device equipped with a scroll compressor according to Embodiment 1 of the present invention.

[0019] Figure 9 This is a longitudinal sectional view of the scroll compressor according to Embodiment 2 of the present invention.

[0020] Figure 10 This is a longitudinal sectional view of a scroll compressor, a variation of Embodiment 2 of the present invention.

[0021] Figure 11 This is a partial longitudinal sectional view of a scroll compressor, a variation of Embodiment 2 of the present invention.

[0022] Figure 12 This is a longitudinal sectional view of a scroll compressor, a variation of Embodiment 2 of the present invention. Detailed Implementation

[0023] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. The present disclosure is not limited to the following embodiments, and various modifications can be made without departing from the spirit of the present disclosure. Furthermore, the present disclosure includes all combinations of structures that can be combined in the structures shown in the following embodiments. In particular, the combination of constituent elements is not limited to the combinations in each embodiment; constituent elements described in one embodiment can be applied to other embodiments. Additionally, the structures shown in the accompanying drawings represent one example of the structure of the present disclosure, and the present disclosure is not limited by the structures shown in the accompanying drawings. Furthermore, in the following description, terms indicating direction (e.g., "up," "down," "right," "left," "front," "rear," etc.) are appropriately used for ease of understanding, but these are for illustrative purposes and do not limit the present disclosure. Furthermore, in the various figures, parts marked with the same reference numerals are the same or equivalent parts, which is consistent throughout the specification. Additionally, in the various figures, the relative dimensional relationships or shapes of the constituent parts may sometimes differ from reality.

[0024] Implementation method 1.

[0025] <Scroll Compressor 100>

[0026] Figure 1 This is a longitudinal sectional view of the scroll compressor 100 according to Embodiment 1 of the present invention. Based on Figure 1The structure and operation of a longitudinally mounted scroll compressor 100 will be described. The scroll compressor 100 is, for example, one of the components of a refrigeration cycle used in various industrial machinery such as refrigerators, freezers, air conditioning units, refrigeration units, or water heaters.

[0027] First, the basic structure of the scroll compressor 100 will be described, followed by the description of its characteristic parts. The scroll compressor 100 draws in refrigerant circulating in the refrigeration cycle and compresses it to a high-temperature and high-pressure state before discharging it. Inside the sealed container 10, the scroll compressor 100 includes a compression mechanism section 14, which combines a fixed scroll member 1 and a swinging scroll member 2 that revolves and oscillates relative to the fixed scroll member 1. Inside the sealed container 10, the scroll compressor 100 also includes an electric motor 5 that is connected to and drives the swinging scroll member 2 via a main shaft 6. In the case of a longitudinally mounted scroll compressor 100, inside the sealed container 10, for example, the compression mechanism section 14 is positioned on the upper side, and the electric motor 5 is positioned on the lower side.

[0028] <Sealed Container 10>

[0029] The sealed container 10 is formed of a conductive component, such as metal, and consists of a cylindrical sidewall 10a, a first endwall 10b blocking one end of the sidewall 10a, and a second endwall 10c blocking the other end of the sidewall 10a. In the case of a longitudinally mounted scroll compressor 100, the first endwall 10b blocks the upper end of the sidewall 10a, and the second endwall 10c blocks the lower end of the sidewall 10a. A suction pipe 13 and a discharge pipe 12 are provided on the sidewall 10a. The suction pipe 13 allows low-pressure refrigerant drawn in from an external refrigerant pipe to flow into the sealed container 10, and the discharge pipe 12 allows refrigerant that has reached a high temperature and high pressure inside the sealed container 10 to flow into and discharge. The suction pipe 13 and the discharge pipe 12 are partially inserted into the sealed container 10, for example, by welding.

[0030] <Fixed scroll component 1>

[0031] The fixed vortex member 1 is composed of a platform portion 1a and a fixed vortex tooth 1b, which is disposed on one side of the platform portion 1a, namely the lower side. The fixed vortex tooth 1b is a vortex-shaped protrusion protruding from the platform portion 1a, which meshes with the swing vortex tooth 2b of the swing vortex member 2 to form a compression chamber 1f.

[0032] The outer periphery of the fixed scroll member 1 is fastened to the guide frame 4 by bolts (not shown). A suction flow path 1e is provided on the outer periphery of the platform portion 1a of the fixed scroll member 1. The suction flow path 1e extends radially along the fixed scroll member 1. The suction flow path 1e is a flow path for introducing refrigerant gas drawn in by the suction pipe 13 into the compression chamber 1f. The front end of the suction pipe 13 is disposed in the suction flow path 1e. A suction check valve may also be provided in the suction flow path 1e, for example. A discharge flow path 1d is formed in the center of the platform portion 1a of the fixed scroll member 1, which discharges the refrigerant gas compressed to high pressure. The compressed refrigerant gas flowing in the discharge flow path 1d is discharged into the upper space 20 inside the sealed container 10. The refrigerant gas discharged into the upper space 20 is guided through a first passage 4f provided in the guide frame 4 to an oil separation mechanism formed in the lower part of the sealed container 10. The refrigerant gas separated from the oil is discharged through the discharge pipe 12 and circulates in the refrigeration cycle device 200.

[0033] <Oscillating Scroll Component 2>

[0034] The oscillating vortex member 2 is composed of a platform portion 2a and an oscillating vortex tooth 2b, which is disposed on one surface of the platform portion 2a, namely the upper surface. The oscillating vortex tooth 2b has a vortex-shaped protrusion with substantially the same shape as the fixed vortex tooth 1b of the fixed vortex member 1. By engaging with the fixed vortex tooth 1b, the volume of the compression chamber 1f changes relatively.

[0035] The oscillating scroll member 2, through the cross mechanism 9 used to prevent its own rotation, is able to revolve (oscillate) relative to the fixed scroll member 1 without rotating. The cross mechanism 9 has two pairs of fixed side keys 9a and two pairs of oscillating side keys 9b.

[0036] The fixed side key 9a engages with the two pairs of cross guide grooves 1c formed on the fixed scroll member 1 in a reciprocating sliding manner. The cross guide grooves 1c of the fixed scroll member 1 are formed on a straight line on the outer periphery of the base plate portion 1a. The swing side key 9b engages with the two pairs of cross guide grooves 2c formed on the swing scroll member 2 in a reciprocating sliding manner. The cross guide grooves 2c of the swing scroll member 2 are formed on a straight line on the outer periphery of the base plate portion 2a with a 90-degree phase difference from the cross guide grooves 1c of the fixed scroll member 1. Through the cross mechanism 9, the swing scroll member 2 can swing without rotating, i.e., swing motion.

[0037] A hollow, cylindrical protrusion 2d is formed on the other side of the platform portion 2a of the oscillating vortex member 2. The other side of the platform portion 2a is the side opposite to the surface on which the oscillating vortex teeth 2b are formed, i.e., the lower side. An eccentric shaft portion 6a, which serves as the oscillation shaft portion, is inserted into the protrusion 2d. This eccentric shaft portion 6a is located at the upper end of the main shaft 6, which is driven by the rotor 5a of the electric motor 5.

[0038] The other surface of the platform portion 2a of the oscillating vortex member 2 is called the thrust surface 2f. The thrust surface 2f is a surface that can slide while being pressed against the thrust bearing 3a of the flexible frame 3.

[0039] An extraction port 2g is provided on the platform portion 2a of the oscillating scroll member 2, which penetrates the platform portion 2a and connects the compression chamber 1f and the thrust surface 2f. The extraction port 2g is a structure used to extract refrigerant gas during compression and guide it to the thrust surface 2f.

[0040] <Flexible Frame 3>

[0041] The flexible frame 3 is housed inside the guide frame 4. An upper cylindrical surface 3p and a lower cylindrical surface 3s are provided on the outer periphery of the flexible frame 3. The upper cylindrical surface 3p and the lower cylindrical surface 3s of the flexible frame 3 are respectively fitted into the upper cylindrical surface 4c and the lower cylindrical surface 4d provided on the inner periphery of the guide frame 4. The upper cylindrical surface 3p and the lower cylindrical surface 3s of the flexible frame 3 are respectively fitted into the upper cylindrical surface 4c and the lower cylindrical surface 4d of the guide frame 4, thereby supporting the flexible frame 3 radially inside the guide frame 4.

[0042] A main bearing 3c and an auxiliary main bearing 3d are provided at the center of the lower cylindrical surface 3s of the flexible frame 3. The main bearing 3c and the auxiliary main bearing 3d are the portions that support the main shaft 6 driven by the rotor 5a of the electric motor 5 in the radial direction. A thrust bearing 3a is provided at the upper end and center of the upper cylindrical surface 3p of the flexible frame 3, opposite to the thrust surface 2f of the oscillating vortex member 2.

[0043] A connecting hole 3e is provided in the flexible frame 3, extending axially through the surface of the thrust bearing 3a. The connecting hole 3e opens at the upper end of the thrust bearing opening 3t. The thrust bearing opening 3t is positioned opposite to the evacuation hole 2g of the platform portion 2a of the oscillating vortex member 2.

[0044] The outer periphery of the thrust bearing 3a of the flexible frame 3 becomes the reciprocating sliding surface 3b of the annular part 9c of the cross mechanism. Through the reciprocating sliding surface 3b, the connecting hole 3f, which connects the outer periphery space 2k of the platform and the upper space 4a of the frame, is connected to the inner side of the annular part 9c of the cross mechanism.

[0045] The flexible frame 3 is equipped with an intermediate pressure adjusting valve 3g for adjusting the pressure of the outer space 2n of the hub, an intermediate pressure adjusting valve pressing member 3h, and an intermediate pressure adjusting valve space 3n that houses the intermediate pressure adjusting spring 3k in a manner shorter than its natural length. The intermediate pressure adjusting valve 3g, the intermediate pressure adjusting valve pressing member 3h, and the intermediate pressure adjusting valve space 3n are located between the upper space 4a of the frame and the outer space 2n of the hub.

[0046] <Booting Framework 4>

[0047] The guide frame 4 forms a lower frame space 4b on its inner surface and the outer surface of the flexible frame 3. The lower frame space 4b is separated by an annular upper seal 7a and a lower seal 7b arranged vertically. On the inner circumferential surface of the guide frame 4, annular sealing grooves are formed at two locations to accommodate the upper seal 7a and the lower seal 7b. Alternatively, the sealing grooves may not be formed on the inner circumferential surface of the guide frame 4, but rather on the outer circumferential surface of the flexible frame 3.

[0048] The lower space 4b of the frame is connected only to the connecting hole 3e of the flexible frame 3, forming a structure that seals in the refrigerant gas supplied by the extraction hole 2g during compression. The space on the outer periphery of the thrust bearing 3a, which is surrounded by the platform portion 2a of the swinging scroll member 2 and the flexible frame 3, i.e., the platform outer periphery space 2k, is a low-pressure space with intake gas atmosphere and intake pressure.

[0049] In addition, the flexible frame 3 and the guiding frame 4 can be constructed separately, or the flexible frame 3 and the guiding frame 4 can be constructed from a single frame.

[0050] <First Path 4f of Bootstrap Framework 4>

[0051] Figure 2 This is a cross-sectional view of the guide frame 4 of the scroll compressor 100 according to Embodiment 1 of the present invention. Figure 2 As shown, the outer periphery of the guide frame 4 is fixed to the sealed container 10 by hot pressing or welding. A first passage 4f formed by a cut is provided on the outer periphery of the guide frame 4 and the fixed scroll member 1, i.e., the compression mechanism 14. Refrigerant gas discharged from the discharge path 1d into the upper space 20 of the sealed container 10 flows downwards through the first passage 4f. The bottom of the sealed container 10 becomes an oil reservoir 21 for storing refrigerant oil 11.

[0052] The first passage 4f is located on the opposite side of the discharge pipe 12, which discharges refrigerant gas from the sealed container 10 to the outside. The space covering the lower center of the guide frame 4 and the sides of the guide frame 4 forms the first discharge passage 4g, which communicates with the discharge pipe 12. A discharge hood 16 with an opening 16b surrounding the lower cylindrical surface 4d is provided at the lower end of the guide frame 4. A second discharge passage 16a within the discharge hood 16 connects the first discharge passage 4g to the discharge pipe 12.

[0053] <Electric Motor 5>

[0054] The motor 5 drives the main shaft 6 to rotate, which consists of the main shaft 6 as the rotating shaft, the rotor 5a fixed to the main shaft 6, and the stator 5b fixed to the sealed container 10.

[0055] <Main Axis 6>

[0056] The main shaft 6 is driven to rotate by energizing the stator 5b. A rotor 5a is fixed to the main shaft 6, for example, by thermoforming. A swing bearing 2e for the swing scroll member 2 and an eccentric shaft portion 6a that can be rotatably engaged are formed at the upper end of the main shaft 6. A main shaft counterweight 6f is fixed to the lower side of the eccentric shaft portion 6a, for example, by thermoforming.

[0057] A main shaft portion 6b is provided on the lower side of the eccentric shaft portion 6a, which rotatably engages with the main bearing 3c and the auxiliary main bearing 3d of the flexible frame 3. A secondary shaft portion 6c is formed at the lower end of the main shaft 6, which rotatably engages with the secondary bearing 8a of the secondary frame 8 located at the lower part of the sealed container 10. An inlet hole 8b is provided in the secondary frame 8 for the refrigeration oil 11 to flow into the oil reservoir 21.

[0058] Between the auxiliary shaft 6c and the main shaft 6b, for example, the rotor 5a of the motor 5 is fixed by thermoforming. An oil supply passage 6d, consisting of a through-hole running axially, is provided on the main shaft 6. The oil supply port 6e at the lower end of the oil supply passage 6d is immersed in refrigerant oil 11 stored at the bottom of the sealed container 10. An oil supply mechanism or pump mechanism (not shown) is provided at the lower part of the main shaft 6, drawing refrigerant oil 11 from the oil supply port 6e. The upper end of the oil supply passage 6d opens into the protrusion 2d of the oscillating scroll member 2. The refrigerant oil 11 drawn up by the oil supply mechanism or pump mechanism flows out from the opening at the upper end of the oil supply passage 6d to the oscillating bearing 2e, lubricating the eccentric shaft 6a and the oscillating bearing 2e. An oil supply hole 6g, branching laterally, is provided in the oil supply passage 6d, through which refrigerant oil 11 is supplied to the auxiliary main bearing 3d, lubricating the auxiliary main bearing 3d and the main shaft 6b. In addition, Figure 1 The diagram of the oil supply hole for main bearing 3c is omitted.

[0059] A first balancing weight 15a is fixed to the upper end face of the rotor 5a. A second balancing weight 15b is fixed to the lower end face of the rotor 5a. The first balancing weight 15a and the second balancing weight 15b are fixed at diagonally eccentric positions. The first balancing weight 15a and the second balancing weight 15b, together with the main shaft balancing weight 6f, counteract the centrifugal force and torque generated by the oscillating scroll 2 oscillating through the eccentric shaft portion 6a of the main shaft 6. Through the first balancing weight 15a, the second balancing weight 15b, and the main shaft balancing weight 6f, the static and dynamic balance of the scroll compressor 100 is achieved.

[0060] A first cup-shaped component 17 containing a first balancing weight 15a is fixed to the upper end face of the rotor 5a, and a second cup-shaped component 18 containing a second balancing weight 15b is fixed to the lower end face of the rotor 5a. Furthermore, the opening 17a at the upper part of the first cup-shaped component 17 is positioned opposite to the opening 16b of the discharge hood 16. The second cup-shaped component 18 is installed with its opening 18a facing downwards.

[0061] <Rotor 5a>

[0062] Figure 3 This is a longitudinal sectional view of the rotor 5a of the motor 5 of the scroll compressor 100 according to Embodiment 1 of the present invention. Figure 4 This is a cross-sectional view of the rotor 5a of the electric motor 5 of the scroll compressor 100 according to Embodiment 1 of the present invention. Figure 3 as well as Figure 4 As shown, the rotor 5a is provided with multiple through flow paths 5f that run through the axial direction.

[0063] The through-flow path 5f is arranged to pass through the bottom of the first cup-shaped component 17 and the second cup-shaped component 18, thereby avoiding the locations of the first balancing weight 15a and the second balancing weight 15b. Multiple through-flow paths 5f are arranged in a manner that is symmetrical about an axis or point-symmetrical. Furthermore, the first cup-shaped component 17 and the second cup-shaped component 18 are preferably non-magnetic materials. Alternatively, the through-flow path 5f can be formed to pass through both the first balancing weight 15a and the second balancing weight 15b, or it can be arranged to avoid the locations of the first cup-shaped component 17 and the second cup-shaped component 18.

[0064] <Stator 5b>

[0065] Figure 5 This is a cross-sectional view of the stator 5b of the motor 5 of the scroll compressor 100 according to Embodiment 1 of the present invention. Figure 5As shown, the outer peripheral surface of the stator 5b of the motor 5 is fixed to the sealed container 10 by thermoforming or welding. A second passage 5g formed by a cut is provided on the outer peripheral part of the stator 5b. The second passage 5g and the first passage 4f together constitute a refrigerant flow path 30 that guides the refrigerant gas discharged from the discharge flow path 1d to the bottom of the sealed container 10.

[0066] A glass terminal 22 is provided on the side of the sealed container 10, and the glass terminal 22 is connected to the stator 5b of the motor 5 via a wire 5h. The above is the basic structure of the scroll compressor 100.

[0067] <Boosting Mechanism 300>

[0068] Figure 6 This is a side view of the booster mechanism 300 of the scroll compressor 100 according to Embodiment 1 of this disclosure. The booster mechanism 300 includes a connecting shaft 301a, a turbine 301c disposed at one end of the connecting shaft 301a, and an impeller 301b disposed at the other end of the connecting shaft 301a. The turbine 301c has a turbine blade assembly 301ca composed of multiple blades, which allows refrigerant flowing in from the centrifugal direction to flow out in the axial direction. The impeller 301b has an impeller blade assembly 301ba composed of multiple blades, which allows refrigerant flowing in from the axial direction to flow out in the centrifugal direction.

[0069] The booster mechanism 300 is formed, for example, of iron or aluminum. The booster mechanism 300 may also be formed of resin or the like. For the booster mechanism 300, for example, if the dimensions of the scroll compressor 100 are 400 mm in length and 170 mm in width, then the diameter of the turbine 301c and impeller 301b is 10 mm, and the length of the connecting shaft 301a is 10 mm.

[0070] <Scroll compressor 100 equipped with booster mechanism 300>

[0071] Figure 7 This is a longitudinal sectional view showing the case where the scroll compressor 100 of Embodiment 1 of this disclosure is equipped with a booster mechanism 300. (See attached image.) Figure 7 As shown, the scroll compressor 100 in Embodiment 1 is equipped with a booster mechanism 300. The booster mechanism 300 is arranged such that a connecting shaft 301a passes through and fixes the scroll member 1 and the suction pipe 13. The turbine 301c is disposed inside the sealed container 10 and in the upper space 20 of the sealed container 10, and the impeller 301b is mounted inside the suction pipe 13. The booster mechanism 300 is capable of rotating about the connecting shaft 301a as the central axis within the fixed scroll member 1 and the suction pipe 13.

[0072] <Guide component 303>

[0073] A guide member 303 is provided inside the sealed container 10 and in the upper space 20 of the sealed container 10. The guide member 303 guides the refrigerant discharged from the discharge flow path 1d to the turbine 301c. The guide member 303 is provided on the side opposite to the oscillating scroll member 2, with the fixed scroll member 1 as a reference. The guide member 303 is configured to extend from the upper side of the discharge flow path 1d of the fixed scroll member 1 to the outer periphery along the other side of the platform portion 1a of the fixed scroll member 1 opposite to the oscillating scroll member 2.

[0074] The refrigerant flow path inlet 303a, formed by the guide member 303, is connected to the discharge flow path 1d, and the flow path outlet 303b faces the vicinity of the turbine 301c. That is, the discharge flow path 1d and the flow path outlet 303b are positioned in a connected state. The guide member 303 is, for example, a plate-shaped component made of metal such as iron or aluminum. The guide member 303 may also be formed of a resin that is oil-resistant or refrigerant-resistant. The guide member 303 is, for example, positioned such that its lower surface, which faces the platform portion 1a of the fixed scroll member 1, is 10 mm to 20 mm away from the platform portion 1a of the fixed scroll member 1. The guide member 303 is positioned such that the shortest distance from the upper surface, opposite to the surface of the fixed scroll member 1 facing the platform portion 1a, to the inner surface of the first end wall 10b of the sealed container 10 is, for example, 10 cm. The refrigerant discharged by the guide component 303 is guided to concentrate in the turbine 301c, reliably reaching the turbine 301c, which rotates efficiently.

[0075] <First rectifier block 302a and second rectifier block 302b>

[0076] Inside the suction pipe 13, a first rectifier block 302a and a second rectifier block 302b are provided to maximize the effect of the pressurization mechanism 300. The first rectifier block 302a is configured upstream of the impeller 301b and along the centrifugal direction of the impeller 301b. The second rectifier block 302b is configured downstream of the impeller 301b, and its upstream end is opposite to the connecting shaft 301a.

[0077] Refrigerant flows from the axial direction of impeller 301b into impeller blade assembly 301ba via the first rectifier block 302a, and flows from impeller blade assembly 301ba into impeller 301b via the second rectifier block 302b. By setting the first rectifier block 302a and the second rectifier block 302b, the rotational efficiency of impeller 301b is improved.

[0078] <Operation of Scroll Compressor 100>

[0079] During startup and operation of the scroll compressor 100, refrigerant is drawn in through the suction pipe 13 and into the impeller 301b through the gap between the first rectifier block 302a and the suction pipe 13. The refrigerant is actively fed into the compression chamber 1f of the scroll compressor 100 by the power of the turbine 301c (described later). The compression chamber 1f is formed by the meshing of the fixed scroll teeth 1b of the fixed scroll member 1 and the oscillating scroll teeth 2b of the oscillating scroll member 2.

[0080] The oscillating scroll member 2, driven by the electric motor 5, performs a compression stroke that reduces the volume of the compression chamber 1f due to its eccentric rotary motion, thereby compressing the drawn-in refrigerant into a high-pressure state. Furthermore, during the compression stroke, the refrigerant gas at intermediate pressure is guided from the suction port 2g of the oscillating scroll member 2 through the connecting hole 3e of the flexible frame 3 to the lower space 4b of the frame, thus maintaining the lower space 4b of the frame at an intermediate pressure atmosphere.

[0081] The refrigerant, compressed to high pressure, mixes with the refrigeration oil 11 to form a mixed gas, which is discharged from the discharge flow path 1d of the fixed scroll member 1. The discharged mixed gas passes through the interior of the flow path formed by the guide member 303, and after reaching the flow path outlet 303b, flows into the turbine 301c. The mixed gas flowing into the turbine 301c is guided into the upper space 20 of the sealed container 10 while causing the turbine 301c to rotate. At this time, when the turbine 301c rotates, the connecting shaft 301a rotates and the impeller 301b rotates as the turbine 301c rotates. When the impeller 301b rotates, the refrigerant in the suction pipe 13 is actively drawn into the impeller 301b, which promotes the flow of refrigerant into the suction flow path 1e, thereby achieving active refrigerant intake, i.e., refrigerant pressurization.

[0082] After the turbine 301c rotates, the gas mixture passes through a refrigerant flow path 30, which is formed by a first passage 4f located on the outer periphery of the compression mechanism section 14 and a second passage 5g located on the outer periphery of the stator 5b of the electric motor 5. The gas mixture passing through the refrigerant flow path 30 is guided to the bottom of the sealed container 10, which is located below the electric motor 5. During the process of being guided to the bottom of the sealed container 10, it is separated into refrigerant oil 11 and refrigerant gas.

[0083] The refrigerant gas separated from the refrigeration oil 11 enters the interior through the opening 18a of the second cup-shaped component 18 mounted on the lower end face of the rotor 5a of the motor 5, and flows into the through flow path 5f provided on the rotor 5a. The refrigerant gas rises inside the first cup-shaped component 17 mounted on the upper end face of the rotor 5a through the through flow path 5f and flows into the discharge shroud 16. The refrigerant gas passes through the second discharge passage 16a in the discharge shroud 16, through the first discharge passage 4g, and then through the discharge pipe 12 to the outside of the sealed container 10.

[0084] In this way, the pressurizing mechanism 300 promotes the flow of refrigerant flowing in the suction flow path 1e by utilizing the pressure energy of the refrigerant discharged from the discharge flow path 1d to the outside of the compression chamber 1f to rotate the impeller 301b. As a result, the capacity of the scroll compressor 100 is increased relative to the pressurized refrigerant in the compression chamber 1f, and the amount of work done per revolution of the oscillating scroll 2 is reduced.

[0085] In particular, power recovery based on the pressurization mechanism 300 is achieved by guiding refrigerant from the discharge flow path 1d of the fixed scroll member 1 disposed inside the sealed container 10 to the turbine 301c of the fixed scroll member 1 disposed inside the sealed container 10. Therefore, for example, compared to the case where the refrigerant is guided to the turbine 301c via piping disposed outside the sealed container 10, the pressure loss in the refrigerant is reduced, and power recovery can be performed efficiently.

[0086] <Refrigeration cycle unit 200>

[0087] Figure 8 This is a schematic structural diagram of a refrigeration cycle apparatus 200 equipped with a scroll compressor 100 according to Embodiment 1 of this disclosure. Figure 8 In the diagram, dashed arrows indicate the flow of refrigerant during cooling operation, while solid arrows indicate the flow of refrigerant during heating operation.

[0088] like Figure 8 As shown, the scroll compressor 100 is connected to a refrigeration cycle device 200, such as an air conditioner. In the refrigeration cycle device 200, a suction silencer 101 for the scroll compressor 100 is connected to the suction side, and a four-way switching valve 103 is connected to the discharge side. The four-way switching valve 103 switches the flow of refrigerant from the scroll compressor 100. The refrigeration cycle device 200 also includes an outdoor heat exchanger 104, a pressure reducer 105 such as an electric expansion valve, and an indoor heat exchanger 106. These components are connected sequentially via piping to form a refrigeration circuit. Generally, in refrigeration and air conditioning devices such as the refrigeration cycle device 200, the indoor heat exchanger 106 is installed indoors, while the remaining components—the scroll compressor 100, the four-way switching valve 103, the outdoor heat exchanger 104, and the pressure reducer 105—are installed outdoors.

[0089] For example, during the heating operation of the air conditioner, the four-way switching valve 103 switches so that the refrigerant flows in the direction indicated by the solid arrow. The high-temperature and high-pressure refrigerant, compressed by the scroll compressor 100, flows to the indoor heat exchanger 106. After condensing and liquefying, it is throttled by the pressure reducer 105, becoming a two-phase state of low temperature and low pressure, and flows to the outdoor heat exchanger 104. The refrigerant flowing to the outdoor heat exchanger 104 evaporates and vaporizes in the outdoor heat exchanger 104 and returns to the scroll compressor 100 through the four-way switching valve 103.

[0090] The refrigerant circulates in the refrigeration circuit, exchanging heat with the outside air in the outdoor heat exchanger 104, which acts as an evaporator. It is then sent to the outdoor heat exchanger 104 to absorb heat. After absorbing heat in the outdoor heat exchanger 104, the refrigerant is sent to the indoor heat exchanger 106, which acts as a condenser, to exchange heat with the indoor air, thereby heating the indoor air.

[0091] In cooling operation, the four-way switching valve 103 switches so that the refrigerant flows in the direction indicated by the dashed arrow. The high-temperature and high-pressure refrigerant, compressed by the scroll compressor 100, flows to the outdoor heat exchanger 104. After condensing and liquefying, it is throttled by the pressure reducer 105, becoming a two-phase state of low temperature and low pressure, and flows to the indoor heat exchanger 106. The refrigerant flowing to the indoor heat exchanger 106 evaporates and vaporizes, then returns to the scroll compressor 100 through the four-way switching valve 103. That is, when switching from heating operation to cooling operation, the indoor heat exchanger 106 changes from a condenser to an evaporator, and the outdoor heat exchanger 104 changes from an evaporator to a condenser.

[0092] The refrigerant circulates in the refrigeration circuit, thereby exchanging heat with the indoor air in the indoor-side heat exchanger 106, which acts as an evaporator, absorbing heat from the indoor air and thus cooling it. The refrigerant, having absorbed heat from the indoor air, is then sent to the outdoor-side heat exchanger 104, which acts as a condenser, where it exchanges heat with the outside air and dissipates heat to the outside.

[0093] Furthermore, examples of refrigerants used in the refrigeration cycle unit 200 include fluorinated refrigerants or hydrocarbon refrigerants with low Global Warming Potential (GWP). Other examples of refrigerants include any single refrigerant selected from R1234yf, R1234ze, R32, or R290, or a mixture of any two or more of these refrigerants, or a mixture of any one of these refrigerants with other refrigerants. Additionally, examples of refrigerants include mixtures containing R1132(E) or mixtures containing R1123. In addition, examples of refrigerants include mixed refrigerants such as R516A, R445A, R444A, R454C, R444B, R454A, R455A, R457A, R459B, R452B, R454B, R447B, R447A, R446A, R459A, and 410A.

[0094] The scroll compressor 100 of Embodiment 1 described above has a pressurization mechanism 300 inside the sealed container 10. The pressurization mechanism 300 includes: a turbine 301c that rotates due to refrigerant discharged from the discharge flow path 1d; an impeller 301b that promotes the flow of refrigerant flowing in the suction flow path 1e; and a connecting shaft 301a that is rotatably supported on the fixed scroll member 1. If the main shaft 6 is driven to rotate by the electric motor 5, the oscillating scroll member 2 is driven to rotate. The refrigerant is compressed in the compression chamber 1f formed by the meshing of the fixed scroll teeth 1b of the fixed scroll member 1 and the oscillating scroll teeth 2b of the oscillating scroll member 2, and discharged from the discharge flow path 1d of the fixed scroll member 1. The refrigerant discharged to the outside of the compression chamber 1f through the discharge flow path 1d rotates the turbine 301c of the booster mechanism 300. The impeller 301b rotates along with the turbine 301c, and the rotation of the impeller 301b promotes the flow of refrigerant flowing in the suction flow path 1e. Thus, by utilizing the pressure energy of the refrigerant to rotate the impeller 301b, the flow of refrigerant in the suction flow path 1e is promoted, increasing the capacity of the scroll compressor 100 relative to the pressurized refrigerant in the compression chamber 1f. Furthermore, by pressurizing the compression chamber 1f, the work done per revolution of the oscillating scroll member 2 can be reduced. In particular, power recovery based on the booster mechanism 300 is achieved by guiding refrigerant from the discharge flow path 1d provided on the fixed scroll member 1 to the turbine 301c provided on the fixed scroll member 1 inside the sealed container 10. In this way, by setting the booster mechanism 300 in the compression mechanism section 14, compared with the case where gas is guided to the turbine 301c through the discharge pipe provided outside the sealed container 10 for power recovery, the pressure loss is reduced and power recovery can be performed efficiently.

[0095] Furthermore, the turbine 301c has a turbine blade assembly 301ca composed of multiple blades that allow refrigerant to flow in from a centrifugal direction, and the impeller 301b has an impeller blade assembly 301ba composed of multiple blades that allow refrigerant to flow in from a axial direction and flow out from a centrifugal direction. By having the turbine blade assembly 301ca, the turbine 301c can be rotated using the refrigerant flowing in from the turbine 301c in a centrifugal direction. Moreover, since the turbine blade assembly 301ca of the turbine 301c allows the refrigerant to flow in from a centrifugal direction, when the discharge valve is configured in the scroll compressor 100, the discharge valve can be configured in the centrifugal direction of the turbine 301c. Thus, the flow of the discharged refrigerant can be used to actively rotate the turbine 301c. Furthermore, by having the impeller blade assembly 301ba, the compression chamber 1f can be configured in the centrifugal direction of the impeller 301b, and the refrigerant with momentum in the impeller 301b can be actively guided into the compression chamber 1f, resulting in a pressurization effect.

[0096] Furthermore, a guide member 303 is provided on the side of the fixed scroll member 1 opposite to the oscillating scroll member 2 to guide the refrigerant discharged from the discharge flow path 1d to the turbine 301c. Therefore, even when the suction pipe 13 is inserted through the side wall 10a of the sealed container 10, the refrigerant can still be guided to the turbine 301c. Additionally, even when the discharge flow path 1d and the turbine 301c are separately configured, the refrigerant can still be guided to the turbine 301c by the guide member 303.

[0097] Furthermore, the impeller 301b is disposed inside the suction pipe 13, and a first rectifier block 302a and a second rectifier block 302b are disposed inside the suction pipe 13. Through the first rectifier block 302a, the refrigerant easily flows into the impeller blade assembly 301ba from the axial direction, and the refrigerant easily flows out from the impeller blade assembly 301ba in the centrifugal direction through the second rectifier block 302b, thereby improving the rotational efficiency of the impeller 301b.

[0098] Implementation method 2.

[0099] Figure 9 This is a longitudinal sectional view of the scroll compressor 100 according to Embodiment 2 of this disclosure. The configuration of the discharge pipe 12 of the scroll compressor 100 in Embodiment 2 differs from that in Embodiment 1. In Embodiment 2, the same reference numerals are used for parts common to Embodiment 1, and descriptions are omitted; the description focuses on the differences from Embodiment 1.

[0100] like Figure 9As shown, the scroll compressor 100 is a structure in which the suction pipe 13 is connected from the first end wall 10b of the sealed container 10 to the fixed scroll member 1, and is a so-called longitudinal suction type scroll compressor 100. In the longitudinal suction type scroll compressor 100, the booster mechanism 300 is fixed to the fixed scroll member 1 with the connecting shaft 301a held by the booster mechanism bearing 304.

[0101] The booster mechanism bearing 304 is fixed to the upper surface of the fixed scroll member 1, supporting the connecting shaft 301a in such a way that the connecting shaft 301a extends along the upper surface of the fixed scroll member 1. The turbine 301c, located at one end of the connecting shaft 301a, is positioned at the upper part of the discharge flow path 1d. The impeller 301b, located at the other end of the connecting shaft 301a, is disposed inside the suction pipe 13.

[0102] A first rectifier block 302a is arranged upstream of the impeller 301b and along the centrifugal direction of the impeller 301b, and a second rectifier block 302b is arranged downstream of the impeller 301b, opposite to the connecting shaft 301a at its upstream end.

[0103] Next, the operation of the scroll compressor 100 in Embodiment 2 will be described. As described in Embodiment 1, refrigerant is drawn in through the suction pipe 13 and drawn into the impeller 301b through the gap between the first rectifier block 302a and the suction pipe 13. The power from the turbine 301c is actively delivered into the compression chamber 1f and compressed. After the refrigerant is compressed, a high-pressure mixture of refrigerant and refrigerant oil 11 is discharged through the discharge path 1d.

[0104] The discharged gas mixture is guided into the upper space 20 of the sealed container 10 while rotating the turbine 301c located at the top of the discharge flow path 1d. At this time, as the turbine 301c rotates, the connecting shaft 301a rotates, and the impeller 301b located inside the suction pipe 13 rotates. Therefore, the refrigerant in the suction pipe 13 is actively drawn into the impeller 301b, resulting in active refrigerant intake. The gas mixture after the turbine 301c rotates then undergoes the same operation as in Embodiment 1.

[0105] Thus, in a scroll compressor 100 with the suction pipe 13 arranged to penetrate the first end wall 10b of the sealed container 10, it is also possible to obtain a structure that has a pressurization mechanism 300, reduces pressure loss, and efficiently recovers power.

[0106] <Variation Example 1>

[0107] Figure 10 This is a longitudinal sectional view of the scroll compressor 100 of Embodiment 2 of this disclosure. Figure 11 This is a partial longitudinal sectional view of the scroll compressor 100 of Embodiment 2 of this disclosure, showing the direction along... Figure 10 A diagram of the cross section of line AA.

[0108] like Figure 10 and Figure 11 As shown, the boosting mechanism 300 may not be a structure in which the connecting shaft 301a is held by the boosting mechanism bearing 304, but rather a structure in which the connecting shaft 301a is held by the first bearing recess 305a and the second bearing recess 306a. The support member 306 may be fixed to the platform portion 1a by screws, or it may be fixed by pressing.

[0109] A first bearing recess 305a is provided in a receiving recess 305 formed on the platform portion 1a of the fixed scroll member 1, and supports the lower portion that is part of the connecting shaft 301a. A second bearing recess 306a is provided in a support member 306 embedded in the upper part of the receiving recess 305, and supports the upper portion that is another part of the connecting shaft 301a.

[0110] A connecting shaft 301a is rotatably housed between the first bearing recess 305a and the second bearing recess 306a, and can be rotatably supported. The structure in which the connecting shaft 301a is held by the first bearing recess 305a and the second bearing recess 306a increases the volume of the upper space 20 in the sealed container 10.

[0111] Alternatively, in the case of Modified Example 1, a first rectifier block 302a and a second rectifier block 302b can also be configured. The first rectifier block 302a is configured upstream of the impeller 301b and in the centrifugal direction of the impeller 301b, and the second rectifier block 302b is configured such that its upstream end is opposite to the connecting shaft 301a.

[0112] <Variation Example 2>

[0113] Figure 12 This is a longitudinal sectional view of the scroll compressor 100, a variation of Embodiment 2 of this disclosure. Figure 12 As shown, the booster mechanism 300 may also have a guide member 303, which guides the refrigerant discharged from the discharge flow path 1d to the turbine 301c.

[0114] The guide component 303 is located above the fixed vortex component 1 and on the side opposite to the first end wall 10b, i.e., the upper space 20 of the sealed container 10. The flow path inlet 303a of the guide component 303 is connected to the discharge flow path 1d of the fixed vortex component 1, and the flow path outlet 303b is located near the turbine 301c of the pressurizing mechanism 300.

[0115] In the case of Modification 2, a first rectifier block 302a and a second rectifier block 302b can also be provided inside the suction pipe 13. The first rectifier block 302a is disposed upstream of the impeller 301b and in the centrifugal direction of the impeller 301b, and the second rectifier block 302b is disposed with its upstream end facing the connecting shaft 301a.

[0116] Depending on the configuration of the scroll compressor 100, the turbine 301c of the booster mechanism 300 is sometimes configured away from the position where the discharge flow path 1d is formed. By providing the guide member 303, even in the configuration where the turbine 301c is configured away from the discharge flow path 1d, the refrigerant flowing out of the discharge flow path 1d can reliably reach the turbine 301c, thereby improving the efficiency of power recovery based on the turbine 301c.

[0117] The scroll compressor 100 of Embodiment 2 described above has an intake flow path 1e that extends axially from the end face of the fixed scroll member 1 opposite to the first end wall 10b along the fixed scroll member 1. An impeller 301b of a booster mechanism 300 is disposed in the intake flow path 1e, and the impeller 301b rotates with the rotation of the turbine 301c, thereby actively drawing refrigerant into the compression chamber 1f. Thus, even when the intake pipe 13 is configured to penetrate the first end wall 10b of the sealed container 10, a structure capable of recovering power using the booster mechanism 300 can also be achieved.

[0118] Furthermore, a guide member 303 is provided on the end face of the fixed scroll member 1 opposite to the first end wall 10b to guide the discharged refrigerant toward the turbine 301c. Therefore, even in a configuration where the discharge flow path 1d and the turbine 301c are arranged separately, the guide member 303 can guide the refrigerant discharged from the discharge flow path 1d toward the turbine 301c.

[0119] Furthermore, a booster bearing 304, which is fixed to the fixed scroll member 1 and rotatably supports the connecting shaft 301a, is provided on the end face of the fixed scroll member 1 opposite to the first end wall 10b. Therefore, the connecting shaft 301a is supported by the booster bearing 304 and is rotatable relative to the fixed scroll member 1.

[0120] Alternatively, the connecting shaft 301a can also be rotatably supported by a first bearing recess 305a provided in the receiving recess 305 of the fixed scroll member 1 and a second bearing recess 306a provided in the support member 306 disposed in the receiving recess 305. Thus, the connecting shaft 301a can be rotatably supported relative to the fixed scroll member 1.

[0121] Furthermore, implementation methods 1 and 2 can be appropriately combined.

[0122] Explanation of reference numerals in the attached figures

[0123] 1... Fixed vortex component; 1a... Platform section; 1b... Fixed vortex teeth; 1c... Cross guide groove; 1d... Discharge flow path; 1e... Suction flow path; 1f... Compression chamber; 2... Oscillating vortex component; 2a... Platform section; 2b... Oscillating vortex teeth; 2c... Cross guide groove; 2d... Protrusion; 2e... Oscillating bearing; 2f... Thrust surface; 2g... Air extraction port; 2k... Space around the outer periphery of the platform; 2n... Space outside the protrusion; 3... Flexible frame; 3a... Thrust bearing; 3b... Reciprocating sliding surface; 3c... Main bearing; 3d... Auxiliary main bearing; 3e... Connecting hole; 3f... Connecting cavity; 3g... Intermediate pressure regulating valve; 3h...Intermediate pressure regulating valve press; 3k...Intermediate pressure regulating spring; 3n...Intermediate pressure regulating valve space; 3p...Upper cylindrical surface; 3s...Lower cylindrical surface; 3t...Thrust bearing opening; 4...Guide frame; 4a...Upper space of the frame; 4b...Lower space of the frame; 4c...Upper cylindrical surface; 4d...Lower cylindrical surface; 4f...First passage; 4g...First discharge passage; 5...Motor; 5a...Rotor; 5b...Stator; 5f...Through flow path; 5g...Second passage; 5h...Wire; 6...Main shaft; 6a...Eccentric shaft; 6b...Main shaft; 6c...Secondary shaft; 6d... 6e... Oil supply line; 6f... Main spindle counterweight; 6g... Oil supply hole; 7a... Upper seal; 7b... Lower seal; 8... Sub-frame; 8a... Sub-bearing; 8b... Inlet hole; 9... Cross mechanism; 9a... Fixed side key; 9b... Swinging side key; 9c... Annular part of cross mechanism; 10... Sealed container; 10a... Side wall; 10b... First end wall; 10c... Second end wall; 11... Refrigeration oil; 12... Discharge pipe; 13... Suction pipe; 14... Compression mechanism; 15a... First counterweight; 15b... Second counterweight; 16... Discharge hood; 16a... Second discharge Pathway; 16b...Opening; 17...First cup-shaped component; 17a...Opening; 18...Second cup-shaped component; 18a...Opening; 20...Upper space; 21...Oil reservoir; 22...Glass terminal; 30...Refrigerant flow path; 100...Scroll compressor; 101...Suction muffler; 103...Four-way switching valve; 104...Outdoor heat exchanger; 105...Pressure reducer; 106...Indoor heat exchanger; 200...Refrigeration cycle device; 300...Boosting mechanism; 301a...Connecting shaft; 301b...Impeller; 301ba...Impeller blade assembly; 301c...Turbine; 301ca...Turbine blade assembly; 302a...first rectifier block; 302b...second rectifier block; 303...guide component; 303a...flow path inlet; 303b...flow path outlet; 304...booster mechanism bearing; 305...receiving recess; 305a...first bearing recess; 306...support component; 306a...second bearing recess.

Claims

1. A scroll compressor, characterized in that, have: Sealed container; The compression mechanism is located inside the sealed container and has a compression chamber that compresses the refrigerant by meshing the fixed vortex teeth of the fixed vortex member with the oscillating vortex teeth of the oscillating vortex member. A rotating shaft, located inside the sealed container, drives the oscillating vortex component to rotate; An electric motor, disposed inside the sealed container, drives the rotating shaft to rotate; and A pressurizing mechanism, disposed inside the sealed container, includes: a turbine that rotates by means of the refrigerant discharged from the compression chamber; an impeller that rotates with the turbine; and a connecting shaft connected to the turbine at one end and the impeller at the other end. The fixed scroll member has the following features: A discharge path for the refrigerant discharged from the compression chamber of the compression mechanism; and A suction flow path, through which the refrigerant is drawn into the sealed container. The turbine of the supercharging mechanism is configured in the discharge flow path. The impeller of the pressurizing mechanism is configured in the suction flow path. The connecting shaft of the pressurizing mechanism is rotatably supported on the fixed scroll member.

2. The scroll compressor according to claim 1, characterized in that, The turbine has a turbine blade assembly having multiple blades that allow the refrigerant to flow in a centrifugal direction. The impeller has an impeller blade assembly having multiple blades that allow the refrigerant to flow in from the axial direction and flow out in the centrifugal direction.

3. The scroll compressor according to claim 1 or 2, characterized in that, The sealed container comprises: The tubular sidewalls; and The suction tube extends through the sidewall, and its front end is positioned within the suction flow path. The suction flow path of the fixed vortex member is formed such that it extends from the side of the fixed vortex member opposite to the sidewall along the radial direction of the fixed vortex member. On the opposite side of the oscillating vortex member, with the fixed vortex member as a reference, a guide member is provided to guide the refrigerant discharged from the discharge path to the turbine.

4. The scroll compressor according to claim 1 or 2, characterized in that, The sealed container comprises: The end wall, located on the opposite side of the oscillating vortex member with reference to the fixed vortex member; and The suction tube extends through the end wall, and its front end is positioned within the suction flow path. The suction flow path of the fixed vortex member is formed such that it extends along the axial direction of the fixed vortex member from the end face opposite to the end wall.

5. The scroll compressor according to claim 4, characterized in that, The end face of the fixed scroll member has a guide member that guides the refrigerant discharged from the discharge path to the turbine.

6. The scroll compressor according to claim 4, characterized in that, A pressure boosting mechanism bearing is provided on the end face of the fixed scroll member. The pressure boosting mechanism bearing is fixed to the fixed scroll member and supports the connecting shaft to rotate freely.

7. The scroll compressor according to claim 4, characterized in that, A receiving recess is formed on the end face side of the fixed scroll member, and the receiving recess has a first bearing recess that supports a portion of the connecting shaft. A support member is disposed in the receiving recess, the support member having a second bearing recess that supports another part of the connecting shaft. The connecting shaft is supported by the first bearing recess and the second bearing recess, allowing it to rotate freely.

8. The scroll compressor according to any one of claims 2 to 4, characterized in that, The impeller is disposed inside the suction pipe. The inhalation tube includes: A first rectifier block is configured to be positioned upstream of the impeller on the refrigerant flow side and along the centrifugal direction of the impeller; and The second rectifier block is positioned relative to the impeller, on the opposite side of the turbine, and at its end, which is located upstream of the refrigerant, opposite the connecting shaft.

9. The scroll compressor according to any one of claims 1 to 8, characterized in that, The refrigerant is any single refrigerant of R1234yf, R1234ze, R32, R290, or any mixture of two or more of them, or any mixture of them with other refrigerants, or a mixture containing R1132(E), or a mixture containing R1123.

10. A refrigeration cycle device, characterized in that, have: The scroll compressor according to any one of claims 1 to 9; A condenser that dissipates heat from the refrigerant compressed by the scroll compressor; A pressure reducer that reduces the pressure of the refrigerant flowing out of the condenser; as well as An evaporator that causes the refrigerant flowing out of the pressure reducer to evaporate.

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