CN217813923U - Scroll compressor having a discharge port for discharging refrigerant from a discharge chamber - Google Patents

Abstract

The utility model provides a scroll compressor, which comprises a front shell; the rear shell is provided with a bearing support and a first cavity capable of accommodating at least one power module; the hollow shell is connected with the front shell and the rear shell, and one end of the shell, which is connected with the rear shell, is provided with an air suction port; the crankshaft and the auxiliary bearing are accommodated in the shell, one side of the auxiliary bearing is sleeved with one end of the long shaft part of the crankshaft, and the other side of the auxiliary bearing is arranged on the bearing support; and the heat dissipation structure is fixed on the long shaft part of the crankshaft, and the rotation of the crankshaft drives the heat dissipation structure to rotate to generate air flow towards the direction of the rear shell. The compressor has a heat dissipation structure, heat exchange between a low-temperature low-pressure refrigerant and the power module of the controller is enhanced, so that the power module can be cooled by the refrigerant sucked by the compressor to the maximum extent, the cooling of the power module of the controller is realized, and the overall reliability of the compressor is improved.

Description

Scroll compressor having a discharge port for discharging refrigerant from a discharge chamber

Technical Field

The utility model relates to a compressor field, specifically speaking relates to a scroll compressor.

Background

The development trend of automobile-used electronic scroll compressor is for possessing broader rotational speed scope, bigger operating range, and the refrigerant flow is less when the compressor is in lower rotational speed operation, and the cooling effect to the controller worsens, and this makes the heat that controller power module sent can't in time be taken away, and power module temperature rises, leads to the loading capacity of compressor when the low speed to receive the restriction, influences its operating range when the low speed.

A scroll compressor is disclosed in (CN 113404668A) and comprises a housing, a suction tube, a cold bar and a controller. The shell is divided into an electric control area and a high-voltage area. The suction pipe is disposed at a side of the housing. The cold bar enters the electric control area to be connected with the suction pipe and is fixed on the shell wall of the high-pressure area. The cold bar has an internal channel for the flow of a cooling medium. The controller is arranged on the outer surface of the cold rod, and waste heat generated by the controller is dissipated by utilizing the cold rod. The limitations of this solution are: 1. the cold bar is arranged in the cavity of the controller, and can occupy a large space of the cavity of the controller and a Printed Circuit Board (PCB), which is not beneficial to the arrangement of electronic components; 2. because the internal channel of the cold bar is in a linear form and is directly connected with the air suction port, the position of the air suction port is determined by the position of the controller, the position of the air suction port of the compressor is limited, and the requirements of different clients are not met; 3. natural cooling can be performed only by suction, and the heat dissipation effect is poor when the compressor is operated at a low speed.

In the prior art, a heat dissipation structure is additionally arranged on a compressor aiming at the cooling problem of a controller, so that the reliability of the controller is improved, but the schemes have some defects at the same time. For example, a patent (CN 214617019U) discloses a scroll compressor with a heat dissipation structure, which comprises a housing, wherein a top cover and a bottom cover are respectively arranged at two ends of the housing, a PCB controller is connected to one end of the bottom cover, and a suction port is formed at one side of the housing, which is connected with the bottom cover, for sucking a refrigerant; the corresponding department of bearing frame in with the bottom on the induction port is equipped with the fin-shaped baffle that is used for leading the refrigerant, when the refrigerant enters into the casing through the induction port, transmits to PCB controller department through heat conduction silicone grease at last, and the heat dissipation is good, has promoted scroll compressor's life to improve compressor's efficiency, and can also reduce partial noise. The method has the advantages that the finned baffle is additionally arranged in the bottom cover, and partial refrigerant is guided to the PCB controller, so that the method has three limitations, one is that the refrigerant guided by the finned baffle can only cool the outer area of the bearing seat, and the controller cooling effect on the corresponding area of the bearing seat is poor; secondly, more refrigerant entering the compressor from the air suction port flows towards the direction of the scroll plate, only a small part of refrigerant flows along the fin baffle to participate in cooling, and the cooling effect is limited; and thirdly, the controller and the low-temperature refrigerant are separated by a thicker bottom cover, and the cooling effect is influenced by the design because the thermal resistance is increased.

The patent (CN 211764820U) discloses a heat dissipation structure of a vehicle air-conditioning compressor controller, which comprises a compressor shell, a compressor, a controller shell, a controller and a work box, wherein a water tank is arranged below the work box, a micropump is fixedly arranged in the water tank, one side of the micropump is fixedly connected with a water inlet pipe, one end of the water inlet pipe is fixedly connected with a condenser pipe, one end of the condenser pipe, which is far away from the water inlet pipe, is fixedly connected with a water outlet, and one end of the water outlet, which is far away from the condenser pipe, is fixedly connected to the wall of the water tank, which is far away from the water inlet pipe; still fixed mounting has the fixer on the work box outer wall, fixer and condenser pipe fixed connection, installs the semiconductor refrigeration piece on the condenser pipe wall. This disclose promptly through external water tank carry out the controller heat dissipation cooling, its limitation lies in: a larger space is needed to meet the installation requirement of the heat dissipation structure; water is used as a cooling medium and needs to be supplemented in time; the semiconductor refrigeration circulating water is used for cooling, so that extra electric energy consumption is brought, and the electric vehicle is not friendly to endurance.

Therefore, the problem of cooling the controller in the scroll compressor remains a technical problem to be solved in the art.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, an object of the utility model is to provide a scroll compressor, this compressor have heat radiation structure, strengthen the heat exchange between the power module of low temperature low pressure refrigerant and controller for power module can be by the inspiratory refrigerant cooling of compressor furthest, realizes the cooling of the power module of controller, has improved the overall reliability of compressor.

An embodiment of the utility model provides a scroll compressor, include:

a front housing;

the rear shell is provided with a bearing support and a first cavity capable of accommodating at least one power module;

the hollow shell is connected with the front shell and the rear shell, and one end of the shell, which is connected with the rear shell, is provided with an air suction port;

the crankshaft and the auxiliary bearing are accommodated in the shell, one side of the auxiliary bearing is sleeved with one end of a long shaft part of the crankshaft, and the other side of the auxiliary bearing is arranged on the bearing bracket; and

and the heat dissipation structure is fixed on the long shaft part of the crankshaft, and the rotation of the crankshaft drives the heat dissipation structure to rotate to generate wind flow towards the direction of the rear shell.

According to some embodiments of the present invention, the heat dissipation structure has a blade-type structure, including a fan base and at least one fan blade;

the fan base is fixed on the outer wall of the long shaft part;

the at least one fan blade is circumferentially arranged on the side wall of the fan base.

According to some embodiments of the utility model, the fan base with major axis portion connects, the jump ring is connected, the key-type connection, the shrink fit is connected, threaded connection or riveting connection through interference fit.

According to some embodiments of the invention, the fan blade is made of metal, plastic or rubber material; and/or

According to the utility model discloses a some embodiments, the flabellum is formed through injection moulding technology, 3D printing technology, machining technology or casting process preparation.

According to some embodiments of the utility model, heat radiation structure includes a plurality of flabellums and sets up in a plurality of the frame of flabellum periphery.

According to some embodiments of the present invention, the scroll compressor further comprises a baffle plate disposed on an inner wall of the housing at the suction port.

According to some embodiments of the utility model, the bearing bracket of backshell with be provided with a second cavity between the auxiliary bearing, be provided with an at least exhaust through-hole on the bearing bracket, an at least exhaust through-hole intercommunication the second cavity with the cavity that backshell and motor constitute.

According to some embodiments of the invention, the at least one exhaust through hole is provided in a side of the bearing support remote from the suction port.

According to some embodiments of the present invention, the scroll compressor further comprises a baffle plate disposed on an inner wall of the shell at the suction port, and the baffle plate is of an unclosed annular structure;

the unclosed part of the baffle is arranged on one side of the bearing support, which is far away from the air suction port.

According to some embodiments of the present invention, the power module further comprises at least one power module accommodated in the first cavity, and each of the heat dissipation surfaces of the power module is disposed on the wall between the first cavity and the second cavity.

The utility model relates to a compressor with controller cooling function utilizes the blade to strengthen the convection heat transfer to the power module installation face of controller, improves the area load capacity and the operating range of compressor.

The utility model discloses under the condition of rationally utilizing the current inner space of compressor and not increasing extra cooling pipe, through addding the heat radiation structure, strengthen the power module of controller and the radiating effect at auxiliary bearing position, make the power module can be cooled by the refrigerant that the compressor inhales to the greatest extent, strengthen the heat exchange between low temperature low pressure refrigerant and the power module of controller, realize the cooling of the power module of controller, improve the overall reliability of compressor; in some embodiments, through the second cavity between backshell and the auxiliary bearing, make more refrigerant flow through the auxiliary bearing, for the auxiliary bearing provides more oil-gas lubrication, guarantee the high-efficient operation of compressor, the utility model discloses a compressor heat dissipation mechanism has simple structure, and its manufacturing process is simple correspondingly, when guaranteeing the oil-gas supply reliability, realizes the abundant lubrication of auxiliary bearing and the abundant cooling of controller power module.

Drawings

Other features, objects, and advantages of the invention will be apparent from the following detailed description of non-limiting embodiments, which proceeds with reference to the accompanying drawings and which is incorporated in and constitutes a part of this specification, illustrating embodiments consistent with this application and together with the description serve to explain the principles of this application. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

Fig. 1 is a schematic structural view of a scroll compressor according to an embodiment of the present invention;

fig. 2 and fig. 3 are schematic structural diagrams of heat dissipation structures according to different embodiments of the present invention, respectively;

fig. 4 and 5 are schematic views of the connection between the heat dissipation structure and the crankshaft according to different embodiments of the present invention;

fig. 6 is a schematic structural diagram of a power module according to an embodiment of the present invention;

fig. 7 is a schematic view illustrating an airflow state of a scroll compressor according to an embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Reference in the specification to expressions of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the specification. Furthermore, the particular features, structures, materials, or characteristics shown may be combined in any suitable manner in any one or more embodiments or examples. Moreover, the various embodiments or examples and features of the various embodiments or examples presented in this specification may be combined and combined by those skilled in the art without being mutually inconsistent.

Throughout the specification, when a device is referred to as being "connected" to another device, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. Terms representing relative spatial terms such as "lower", "upper", and the like may be used to more readily describe one element's relationship to another element as illustrated in the figures. Such terms are intended to include not only the meanings indicated in the drawings, but also other meanings or operations of the device in use. For example, if the device in the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "under" and "beneath" all include above and below. The device may be rotated 90 or other angles and the terminology representing relative space is also to be interpreted accordingly.

Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface are represented. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "a, B or C" or "a, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

Although not defined differently, including technical and scientific terms used herein, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terms defined in commonly used dictionaries are to be interpreted as having meanings consistent with those of the related art documents and the present prompts, and must not be excessively interpreted as having ideal or very formulaic meanings unless defined otherwise.

Aiming at the prior technical problem, the utility model provides a scroll compressor, which comprises a front shell; the rear shell is provided with a bearing support and a first cavity capable of accommodating at least one power module; the hollow shell is connected with the front shell and the rear shell, and one end of the shell, which is connected with the rear shell, is provided with an air suction port; the crankshaft and the auxiliary bearing are accommodated in the shell, one side of the auxiliary bearing is sleeved with one end of the long shaft part of the crankshaft, and the other side of the auxiliary bearing is arranged on the bearing support; and the heat dissipation structure is fixed on the long shaft part of the crankshaft, and the rotation of the crankshaft drives the heat dissipation structure to rotate to generate air flow towards the direction of the rear shell.

The utility model discloses under the condition of rationally utilizing the current inner space of compressor and not increasing extra cooling pipe, through addding the heat radiation structure, strengthen the power module of controller and the radiating effect at auxiliary bearing position, make the power module can be cooled by the refrigerant that the compressor inhales to the greatest extent, strengthen the heat exchange between low temperature low pressure refrigerant and the power module of controller, realize the cooling of the power module of controller, improve the overall reliability of compressor; in some embodiments, through the second cavity between backshell and the auxiliary bearing, make more refrigerant flow through the auxiliary bearing, for the auxiliary bearing provides more oil-gas lubrication, guarantee the high-efficient operation of compressor, the utility model discloses a compressor heat dissipation mechanism has simple structure, and its manufacturing process is simple correspondingly, when guaranteeing that the reliability is supplied with to the oil-gas, realizes the abundant lubrication of auxiliary bearing and the abundant cooling of controller power module.

The structure of the scroll compressor of the present invention will be further described with reference to the accompanying drawings and specific embodiments, it should be understood that the scope of the invention is not limited by the specific embodiments.

Fig. 1 is a schematic structural diagram of a scroll compressor according to an embodiment of the present invention, specifically, a scroll compressor, including:

a front case 11;

a rear case 13 provided with a bearing bracket 131 and a first cavity a in which at least one power module can be accommodated;

a hollow housing 12 connecting the front housing 11 and the rear housing 13, wherein an air inlet 121 is formed at one end of the housing 12 connected to the rear housing 13;

the crankshaft 2 and the sub-bearing 3 are accommodated in the housing 12, and generally, the crankshaft 2 includes a long shaft portion, one end of the long shaft portion is connected to one side of the sub-bearing 3, and the other end of the long shaft portion is provided with an eccentric pin, and a shoulder portion is further provided between the long shaft portion and the eccentric pin, and a main bearing of the compressor is sleeved on the shoulder portion of the crankshaft and is rotatably engaged with the shoulder portion. The other side of the sub-bearing 3 is mounted to the bearing bracket 131.

Of course, the scroll compressor further includes a motor, a compression scroll, etc. disposed in the inner space of the housing 12, the motor having a rotor assembly 41 and a stator assembly 42, the rotor assembly 41 being in interference fit with the crankshaft 2, and the stator assembly 42 being located at an outer periphery of the rotor assembly 41. The compression scroll includes an orbiting scroll 51 and a fixed scroll 52 which cooperate to form a plurality of compression chambers, and the orbiting scroll 51 is rotated by an eccentric pin of the crankshaft 2.

The utility model discloses a scroll compressor still includes heat radiation structure 8, is fixed in the major axis portion of bent axle 2 sets up between rotor subassembly 41 and auxiliary bearing 3 promptly, and the rotation of bent axle 2 drives heat radiation structure 8 syntropy is rotated with the rotational speed and is produced the orientation the wind current of 13 directions of backshell.

In some embodiments, the heat dissipation structure has a blade-type structure, and fig. 2 is a schematic structural diagram of the heat dissipation structure according to an embodiment of the present invention, wherein the heat dissipation structure 8 includes a fan base 81 and at least one fan blade 82; the fan base 81 is fixed to the outer wall of the long shaft portion 2; the fan blades 82 are circumferentially disposed on the sidewall of the fan base 81.

The fan blades 82 can be made of metal, plastic or rubber materials; the fan blade 82 may be manufactured by an injection molding process, a 3D printing process, a machining process, a casting process, or the like. The base 81 may also be made of metal, plastic or rubber material, and the same process as the fan blade 82, in which case, the base 81 and the fan blade 82 may be made as a single piece. The utility model discloses in, do not do the injecing to the quantity and the shape of flabellum, can be according to the concrete model of compressor, like the space between rotor subassembly 41 and the auxiliary bearing 3 sets for in the casing. When a heat dissipation structure includes a plurality of fan blades, the plurality of fan blades can be uniformly distributed along the circumferential direction of the sidewall of the fan base 82. It should be noted that, in the following description,

fig. 3 is a schematic structural view of a heat dissipation structure according to another embodiment of the present invention, wherein the heat dissipation structure includes a plurality of fan blades 82 and is disposed in a plurality of circular frames 83 around the fan blades 82, and the frames 83 around the fan blades can play a role of fixing the fan blades to increase the rigidity of the heat dissipation mechanism of the blade structure.

The utility model discloses in, fan base 81 with the fixed connection mode of the outer wall of major axis portion 2 is not limited. In order to ensure that the heat dissipation structure does not loosen during the operation, preferably, the fan base 81 and the long shaft portion 2 may be connected by interference fit, snap spring, key, shrink fit, screw, or rivet, as shown in fig. 4 and 5.

The connection mode of the fan blade 82 and the fan base 81 is not limited, for example, T-bolt connection, embedded bolt connection, implanted bolt connection, etc. may be adopted. The connection can effectively prevent the fan blades from loosening in the working process.

The utility model discloses a when the scroll compressor is operated, refrigerant gas gets into the motor of compressor and the cavity between the backshell 13 from induction port 121, and bent axle 2 rotates and drives 8 syntropys of heat radiation structure and rotate with the rotational speed, produces the orientation the gaseous wind current of refrigerant of backshell 13 direction can strengthen the heat exchange between refrigerant gas and the first cavity an of backshell 13 effectively, when setting up the power module of controller in the first cavity a of backshell 13, can correspondingly strengthen the heat dissipation of power module effectively.

The utility model discloses well power module 9 that sets up can be an IGBT power module, is the power module who constitutes with Insulated Gate Bipolar Transistor (IGBT) promptly, and the essence is a composite power device, and it collects Bipolar power Transistor and power MOSFET's advantage in the integration, mainly uses at the major loop DC-to-AC converter of converter and all inverter circuit, and in the DC AC transform promptly, is the key part of controller. The IGBT power module has the advantages of large input impedance, small driving power, simple control circuit, small switching loss, high on-off speed, high working frequency, large element capacity and the like. Typically, an IGBT power module has a heat dissipation surface 91, as shown in fig. 6. When the utility model discloses a compressor still includes a plurality of power module, its cooling surface can set up in the cavity that backshell and motor constitute with on the chamber wall between the first cavity a.

In some embodiments, the scroll compressor further comprises a baffle 7 disposed on the inner wall of the housing 12 at the suction port 121, as shown in FIG. 1, the baffle 7 being mounted on the inner wall of the housing 12 between the suction port and the motor. The baffle 7 may be an open ring structure, such as a semi-circular ring structure. When the refrigerant gas enters the compressor from the suction port 121, the refrigerant gas flows towards the motor due to the vortex suction structure, and the baffle plate 7 is arranged to enable as much refrigerant gas as possible to pass through the cavity formed by the rear shell and the motor before flowing towards the motor, so that the heat exchange between the refrigerant gas and the first cavity a of the rear shell 13 is enhanced. At the same time, the refrigerant gas can still flow from the unclosed portion of the baffle 7 to the compression scroll side.

In some embodiments, the bearing support 131 of the rear housing 13 may be a protrusion facing away from the first cavity a, as shown in fig. 1, in which case a second cavity b may be formed between the bearing support 131 and the secondary bearing 3, and the secondary bearing 3 is generally connected to the bearing support 131 through the inner bearing ring, the bearing balls and the outer bearing ring, and the refrigerant gas may flow into the second cavity b through the gaps between the inner bearing ring, the bearing balls and the outer bearing ring. The bearing bracket 131 may further include at least one exhaust hole 1311, and the at least one exhaust hole 1311 communicates the second cavity b with a cavity formed by the rear housing 13 and the motor.

The compressor with the above structure may further include at least one power module 9 accommodated in the first cavity a, and the heat dissipation surface 91 of each power module 9 is disposed on the cavity wall between the first cavity a and the second cavity b, and certainly, in actual use, in order to facilitate installation of the power module 9, a cavity wall between the first cavity a and the second cavity b may even accommodate a card slot of the power module. Fig. 7 is a schematic view showing the gas flow state of the scroll compressor of this embodiment, when the scroll compressor is in operation, refrigerant gas enters the cavity between the motor of the compressor and the rear shell 13 from the suction port 121, and the passage near the suction port 121 is blocked by the baffle 7, so that as much refrigerant gas as possible flows toward the rear shell 13; meanwhile, the crankshaft 2 rotates to drive the heat dissipation structure 8 to rotate in the same direction and at the same rotating speed, so that air flow of the refrigerant gas towards the direction of the rear shell 13 is generated, the refrigerant gas flows into the second cavity b through gaps among the bearing inner ring, the bearing balls and the bearing outer ring, and the refrigerant gas flows out of the exhaust through hole 1311 and enters a cavity formed by the rear shell 13 and the motor. The flow state of the refrigerant gas in the above process is shown by the arrow in fig. 7, which effectively enhances the heat exchange between the refrigerant gas and the cavity wall between the first cavity a and the second cavity b, thereby improving the heat dissipation effect of the power module 9 on the cavity wall.

In the embodiment of fig. 7, the at least one exhaust hole 1311 may be disposed on a side of the bearing bracket 131 away from the suction port 121, and accordingly, the non-closed portion of the baffle 7 is disposed on a side of the bearing bracket away from the suction port. That is, the position of the non-closed position of the baffle 7 and the exhaust through hole 1311 is on one side of the compressor, which is more beneficial for the refrigerant gas flowing into the cavity formed by the rear shell 13 and the motor to flow to the compression scroll from the non-closed position of the baffle 7, and improves the overall efficiency of the compressor.

Among the current compressor, the first cavity of the power module holding of auxiliary bearing and controller can only be carried out natural cooling by inspiratory refrigerant gas, and the heat exchange between the two is relatively weak, the utility model discloses a compressor of second cavity b with heat radiation structure 8 and backshell 13 drives the rotatory convection current that produces of heat radiation structure 8 through bent axle 2 when the compressor operation, improves the convection heat transfer effect between auxiliary bearing 3 and the second cavity b, improves the high temperature problem of controller. Meanwhile, when the heat dissipation structure 8 generates forced convection, the oil mist in the refrigerant gas can be blown to the auxiliary bearing 3, so that the lubrication effect of the auxiliary bearing 3 is optimized, and the reliability of the compressor is ensured.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. A scroll compressor, comprising:

a front housing;

the rear shell is provided with a bearing support and a first cavity capable of accommodating at least one power module;

the hollow shell is connected with the front shell and the rear shell, and one end of the shell, which is connected with the rear shell, is provided with an air suction port;

the crankshaft and the auxiliary bearing are accommodated in the shell, one side of the auxiliary bearing is sleeved with one end of the long shaft part of the crankshaft, and the other side of the auxiliary bearing is arranged on the bearing support; and

and the heat dissipation structure is fixed on the long shaft part of the crankshaft, and the rotation of the crankshaft drives the heat dissipation structure to rotate to generate wind flow towards the direction of the rear shell.

2. The scroll compressor of claim 1, wherein the heat sink structure has a blade-type structure comprising a fan base and at least one fan blade;

the fan base is fixed on the outer wall of the long shaft part;

the at least one fan blade is circumferentially arranged on the side wall of the fan base.

3. The scroll compressor of claim 2, wherein the fan base and the long shaft portion are connected by interference fit, snap spring, key, shrink fit, threaded, or riveted connection.

4. The scroll compressor of claim 2, wherein the fan blades are made of metal, plastic or rubber material; and/or

The fan blade is manufactured through an injection molding process, a 3D printing process, a machining process or a casting process.

5. The scroll compressor of claim 2, wherein the heat dissipation structure comprises a plurality of fan blades and a frame disposed at an outer periphery of the plurality of fan blades.

6. The scroll compressor of claim 1, further comprising a baffle plate disposed on an inner wall of the housing at the suction port.

7. The scroll compressor of claim 1, wherein a second cavity is provided between the bearing bracket of the rear shell and the secondary bearing, and wherein the bearing bracket is provided with at least one exhaust through hole which communicates the second cavity with a cavity formed by the rear shell and the motor.

8. The scroll compressor of claim 7, wherein the at least one discharge through-hole is disposed on a side of the bearing bracket remote from the suction port.

9. The scroll compressor of claim 8, further comprising a baffle disposed on an inner wall of the shell at the suction port, and wherein the baffle is of an annular configuration that is not closed;

the unclosed part of the baffle is arranged on one side, away from the air suction port, of the bearing support.

10. The scroll compressor of claim 7, further comprising at least one power module received in the first cavity, and wherein the heat dissipating surface of each power module is disposed on a wall of the cavity between the first cavity and the second cavity.

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