CN115324890A - Scroll compressor having a plurality of scroll members - Google Patents

Abstract

The invention 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 wind 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 plurality of scroll members

Technical Field

The invention relates to the field of compressors, in particular 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 patent (CN 113404668 a) which includes 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 arranged at the side of the shell. 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 rod is arranged in the cavity of the controller, and occupies a larger 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 air suction, and the heat radiation 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 includes a housing, wherein a top cover and a bottom cover are respectively disposed 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 connected to 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 of 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; thirdly, the controller and the low-temperature refrigerant are separated by a thick 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 conditioner compressor controller, which comprises a compressor shell, a compressor, a controller shell, a controller and a working box, wherein a water tank is arranged below the working box, a micro pump is fixedly arranged in the water tank, one side of the micro pump 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, far away from the water inlet pipe, is fixedly connected with a water outlet, and one end of the water outlet, far away from the condenser pipe, is fixedly connected to the wall of one side of the water tank, 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 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 cooling circulating water is used, 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.

Disclosure of Invention

In view of the problems in the prior art, an object of the present invention is to provide a scroll compressor having a heat dissipation structure, which enhances heat exchange between a low-temperature and low-pressure refrigerant and a power module of a controller, so that the power module can be cooled by the refrigerant sucked by the compressor to the maximum extent, thereby cooling the power module of the controller and improving the overall reliability of the compressor.

An embodiment of the present invention provides a scroll compressor, including:

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.

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 invention, the fan base and the long shaft portion are connected by interference fit, snap spring, key, shrink fit, screw, or rivet.

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

According to some embodiments of the invention, the fan blade is manufactured by an injection molding process, a 3D printing process, a machining process, or a casting process.

According to some embodiments of the present invention, the heat dissipation structure includes a plurality of fan blades and a frame disposed at the periphery of the plurality of fan blades.

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

According to some embodiments of the present invention, a second cavity is disposed between the bearing support of the rear housing and the secondary bearing, and the bearing support is provided with at least one exhaust through hole, and the at least one exhaust through hole communicates the second cavity with a cavity formed by the rear housing and the motor.

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

According to some embodiments of the invention, the scroll compressor further comprises a baffle disposed on an inner wall of the shell at the suction port, and the baffle is of an annular configuration that is not closed;

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 the heat dissipation surface of each power module is disposed on the cavity wall between the first cavity and the second cavity.

The invention relates to a compressor with a controller cooling function, which utilizes blades to carry out enhanced convection heat transfer on a power module mounting surface of a controller, and improves the loading capacity and the operating range of the compressor.

The invention strengthens the heat dissipation effect of the power module and the auxiliary bearing part of the controller by adding the heat dissipation structure under the condition of reasonably utilizing the existing internal space of the compressor and not increasing an additional cooling pipeline, so that the power module can be cooled by the refrigerant sucked by the compressor to the maximum extent, the heat exchange between the low-temperature low-pressure refrigerant and the power module of the controller is strengthened, the cooling of the power module of the controller is realized, and the integral reliability of the compressor is improved; in some embodiments, more refrigerant flows through the auxiliary bearing through the second cavity between the rear shell and the auxiliary bearing, so that more oil-gas lubrication is provided for the auxiliary bearing, and efficient operation of the compressor is ensured.

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 the present application and together with the description serve to explain the principles of the 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 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 illustrating connection between a heat dissipation structure and a 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 of the flow conditions 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 the expression "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," or the like, 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, various embodiments or examples and features of different embodiments or examples presented in this specification may be combined and combined by those skilled in the art without contradiction.

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. This term is intended to include not only the meaning 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, 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 "either: 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. Terms defined in commonly used dictionaries are to be additionally interpreted as having meanings consistent with those of related art documents and the contents of the present prompts, and must not be excessively interpreted as having ideal or very formulaic meanings unless defined.

In view of the prior art, the present invention provides a scroll compressor, comprising 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 a long shaft part of the crankshaft, and the other side of the auxiliary bearing is arranged on the bearing bracket; 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 invention strengthens the heat dissipation effect of the power module and the auxiliary bearing part of the controller by adding the heat dissipation structure under the condition of reasonably utilizing the existing internal space of the compressor and not increasing an additional cooling pipeline, so that the power module can be cooled by the refrigerant sucked by the compressor to the maximum extent, the heat exchange between the low-temperature low-pressure refrigerant and the power module of the controller is strengthened, the cooling of the power module of the controller is realized, and the integral reliability of the compressor is improved; in some embodiments, more refrigerant flows through the auxiliary bearing through the second cavity between the rear shell and the auxiliary bearing, so that more oil-gas lubrication is provided for the auxiliary bearing, and efficient operation of the compressor is ensured.

The structure of the scroll compressor of the present invention will be further described with reference to the accompanying drawings and specific embodiments, it being understood that the specific embodiments are not intended to limit the scope of the invention.

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

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 thereof is provided with an eccentric pin, 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 in rotational fit 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 comprises an orbiting scroll 51 and a fixed scroll 52 which are matched to form a plurality of compression chambers, and the orbiting scroll 51 is rotated by an eccentric pin of the crankshaft 2.

The scroll compressor of the present invention further includes a heat dissipation structure 8 fixed to the long axis portion of the crankshaft 2, that is, disposed between the rotor assembly 41 and the auxiliary bearing 3, and the rotation of the crankshaft 2 drives the heat dissipation structure 8 to rotate in the same direction and at the same rotation speed to generate an air flow in the direction of the rear shell 13.

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 blades 82 may be manufactured through 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. In the present invention, the number and shape of the fan blades are not limited, and may be set according to the specific type of the compressor, such as the space between the rotor assembly 41 and the auxiliary bearing 3 in the housing. 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 diagram 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 a circular frame 83 disposed at the periphery of the plurality of fan blades 82, and the circular frame 83 disposed at the periphery of the plurality of fan blades can fix the fan blades to increase the rigidity of the heat dissipation mechanism of the blade structure.

In the present invention, the fixed connection manner between the fan base 81 and the outer wall of the long shaft 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.

When the scroll compressor of the invention operates, refrigerant gas enters a cavity between a motor of the compressor and the rear shell 13 from the air suction port 121, 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, heat exchange between the refrigerant gas and the first cavity a of the rear shell 13 can be effectively enhanced, and when a power module of a controller is arranged in the first cavity a of the rear shell 13, heat dissipation of the power module can be correspondingly and effectively enhanced.

The power module 9 provided in the present invention may be an IGBT power module, that is, a power module formed by Insulated Gate Bipolar Transistors (IGBTs), which is a composite power device in essence, and integrates the advantages of Bipolar power transistors and power MOSFETs into one body, and is mainly applied to a main loop inverter and all inverter circuits of a frequency converter, that is, DC/AC conversion, and is a key component of a 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 compressor of the present invention further includes a plurality of power modules, the heat dissipation surface thereof may be disposed on the cavity wall between the cavity formed by the rear shell and the motor and the first cavity a.

In some embodiments, the scroll compressor further comprises a baffle 7 disposed on the interior wall of the housing 12 at the suction port 121, as shown in FIG. 1, the baffle 7 being mounted on the interior wall of the housing 12 between the suction port and the motor. The baffle 7 may be an open loop, such as a semi-circular loop. 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 operated, the refrigerant gas enters into 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 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 then flows out of the exhaust through holes 1311 to enter 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.

In the existing compressor, the auxiliary bearing and the first cavity accommodated by the power module of the controller can only be naturally cooled by sucked refrigerant gas, and the heat exchange between the auxiliary bearing and the first cavity is weaker. Meanwhile, when the heat dissipation structure 8 generates forced convection, oil mist in the refrigerant gas is blown to the auxiliary bearing 3, so that the lubricating effect of the auxiliary bearing 3 is optimized, and the reliability of the compressor is ensured.

The foregoing is a further detailed description of the invention in connection with specific preferred embodiments and it is not intended to limit the invention to the specific embodiments described. It will be evident to those skilled in the art that the 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 dissipating 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 of the bearing support, which is far away from the air suction port.

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.

Images