Scroll compressor

Abstract

The utility model provides a scroll compressor which comprises a shell, a motor and a scroll assembly, an air inlet guide opening is formed in the shell, and the shell is constructed to define a low-pressure cavity; the motor is arranged in the low-pressure cavity, a side gap is formed between a stator of the motor and the shell, and a rotating shaft is arranged in the motor; a compression chamber for compressing refrigerant gas is formed in the vortex assembly, and the vortex assembly is configured to be controlled by a rotating shaft of the motor to rotate so as to compress the refrigerant gas through the compression chamber; refrigerant gas entering from the air inlet guide port is configured to at least partially flow along the side gap from top to bottom so as to absorb heat generated in the working process of the motor and then flow to the compression chamber. As the side gap is arranged between the stator and the shell of the motor, at least part of refrigerant gas can cool the motor in the process of flowing along the side gap from top to bottom, so that heat generated in the working process of the motor can be effectively discharged, the temperature of the motor is reduced, and the service life of the motor is further prolonged.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of refrigeration equipment, in particular to a scroll compressor. BACKGROUND

[0002] The protection system of the existing scroll compressor can only monitor the working parameters of the motor, which can ensure the electrical safety of the scroll compressor during operation, but cannot protect other hidden dangers.

[0003] In the prior art, the above-mentioned hidden dangers are protected by sensors provided in the air conditioning system. The manufacturer of the air conditioning system needs to protect the above-mentioned hidden dangers separately, which requires special design, experiment, debugging and other work in the air conditioning system, and the procurement and production costs are relatively high. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure solves the problems in the prior art and provides a scroll compressor.

[0005] According to a first aspect of the present disclosure, a scroll compressor is provided, comprising:

[0006] A housing is provided with an air inlet guide opening and is configured to enclose a low-pressure cavity;

[0007] A motor is arranged in the low-pressure cavity, a side gap is provided between the stator of the motor and the housing, and a rotating shaft is arranged in the motor;

[0008] A scroll assembly is formed with a compression chamber for compressing refrigerant gas and is configured to rotate under the control of the rotating shaft of the motor to compress refrigerant gas by using the compression chamber;

[0009] The refrigerant gas entering from the air inlet guide opening is configured to at least partially flow from top to bottom along the side gap to flow to the compression chamber after absorbing the heat generated by the motor during operation.

[0010] In an embodiment of the present disclosure, the housing is provided with an air inlet pipe, the opening of the air inlet pipe at the outer end of the housing is an air suction inlet, and the opening of the air inlet pipe at the inner end of the housing is configured to communicate to the air inlet guide opening; the refrigerant gas is configured to enter the air inlet pipe from the air suction inlet, flow along the air inlet pipe, flow out of the air inlet guide opening, and at least partially flow from top to bottom along the side gap to flow to the compression chamber after absorbing the heat generated by the motor during operation.

[0011] In an embodiment of the present disclosure, the opening of the air inlet pipe at the inner end of the housing is configured as the air inlet guide opening.

[0012] In one embodiment of the present disclosure, the air inlet pipe is a straight pipe and is configured to extend through the housing in a horizontal direction, and the upper end edge is configured to protrude into the low-pressure cavity more than the lower end edge, so that the air inlet guide port is inclined downward.

[0013] In one embodiment of the present disclosure, the air inlet pipe is configured to extend through the housing in a horizontal direction and is bent downward in the low-pressure cavity, so that the air inlet guide port is downward.

[0014] In one embodiment of the present disclosure, the housing is provided with an air inlet pipe configured to extend through the housing in a horizontal direction, and the air inlet pipe is provided with a blocking wall at the end in the low-pressure cavity, and the air inlet pipe is provided with at least one through hole in the side wall below the central axis in the low-pressure cavity as the air inlet guide port.

[0015] In one embodiment of the present disclosure, the air inlet pipe is provided with a through opening in the side wall below the central axis in the low-pressure cavity and in the lower part of the blocking wall at the end in the low-pressure cavity as the air inlet guide port, and the air inlet guide port is inclined downward.

[0016] In one embodiment of the present disclosure, a flow guide is arranged at the position corresponding to the air inlet guide port in the low-pressure cavity, and the flow guide is configured to guide the refrigerant gas flowing out of the air inlet guide port to flow downward along the side gap, so that the heat generated by the motor during operation is absorbed and then flows to the compression chamber.

[0017] In one embodiment of the present disclosure, the flow guide is provided with a flow guide surface in the form of an arc surface, and the refrigerant gas flowing out of the air inlet guide port is configured to rotate to flow downward under the flow guiding effect of the flow guide surface and continue to flow downward along the side gap.

[0018] The present disclosure provides a scroll compressor, which at least comprises a housing, a motor and a scroll assembly, wherein the housing is provided with an air inlet guide port and is configured to enclose a low-pressure cavity; the motor is arranged in the low-pressure cavity, and a side gap is arranged between the stator of the motor and the housing, and a rotating shaft is arranged in the motor; the scroll assembly is formed with a compression chamber for compressing refrigerant gas and is configured to rotate under the control of the rotating shaft of the motor to compress the refrigerant gas; the refrigerant gas entering from the air inlet guide port is configured to at least partially flow downward along the side gap, so that the heat generated by the motor during operation is absorbed and then flows to the compression chamber.

[0019] During the operation of the scroll compressor of the present disclosure, the refrigerant gas enters the housing from the gas inlet guide, and then at least part of the refrigerant gas entering from the gas inlet guide flows downward along the side gap, and then flows to the compression chamber, and then is discharged from the scroll compressor after being compressed in the compression chamber of the scroll assembly.

[0020] In the present disclosure, since the side gap is provided between the stator of the motor and the housing, at least part of the refrigerant gas flowing downward along the side gap can cool the motor due to the temperature of the refrigerant gas being generally lower than the temperature of the motor, thereby effectively discharging the heat generated by the motor during operation and reducing the temperature of the motor, and further prolonging the service life of the motor.

[0021] Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] Figure 1 is a cross-sectional view of a scroll compressor provided by an embodiment of the present disclosure;

[0024] Figure 2 is a perspective view of a flow guide of a scroll compressor provided by an embodiment of the present disclosure;

[0025] Figure 3 is a cross-sectional view of a scroll compressor provided by another embodiment of the present disclosure;

[0026] Figure 4 is a structural view of a scroll compressor provided by an embodiment of the present disclosure;

[0027] Figure 5 is a partial cross-sectional view of the position of an inlet pipe provided by another embodiment of the present disclosure;

[0028] Figure 6 is a partial cross-sectional view of the position of an inlet pipe provided by another embodiment of the present disclosure;

[0029] Figure 7 is a partial cross-sectional view of the position of an inlet pipe provided by another embodiment of the present disclosure.

[0030] Figures 1 to 7 The one-to-one correspondence between the names of the components and the reference numerals in the drawings is as follows:

[0031] 10, housing; 11, air inlet guide; 12, low pressure chamber; 13, side gap; 14, air inlet pipe; 141, air suction inlet; 142, blocking wall; 15, air outlet; 16, flow guiding member; 161, flow guiding surface; 17, oil pool; 20, motor; 21, rotating shaft; 22, stator; 23, rotor; 24, upper winding; 25, lower winding; 30, scroll assembly; 31, orbiting scroll; 32, fixed scroll; 40, frame. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps set forth in the embodiments, numerical expressions, and numerical values are not intended to limit the scope of the present disclosure unless specifically stated otherwise. In all of the examples shown and discussed herein, any particular value should be interpreted as merely an example, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0033] A number of specific details are set forth in the following description in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be practiced according to the claims without some or all of these details. Otherwise, well-known methods, procedures, components, and devices have not been described in detail as not to unnecessarily obscure the present disclosure. Reference will now be made in detail to the embodiments of the present disclosure, one or more examples of which are illustrated in the drawings.

[0034] The terminology used in the description of the one or more embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to limit the one or more embodiments of the present disclosure. As used in the description of the one or more embodiments of the present disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0035] It should be understood that, even though the terms first, second, etc. can be used herein to describe various information, these terms are not intended to denote a particular order or relationship between the information. These terms are used only to distinguish one from another. For example, a first item can be termed a second item, and, similarly, a second item can be termed a first item, without departing from the scope of one or more embodiments of the present disclosure. The word "if' can be interpreted to mean "upon" or "when" or "in response to determining" as used herein, depending on the context. In the present document, "upper", "lower", "front", "rear", "left", "right", and the like, merely indicate relative positions of the relevant parts, and do not limit the absolute positions of the relevant parts. In the present document, "equal", "same", and the like, are not limited in the strict mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and allowed in manufacturing or use. Unless otherwise specified, the numerical ranges in the present document include not only the entire range between the two endpoints, but also several sub-ranges contained therein.

[0036] The present disclosure provides a scroll compressor, which at least comprises a housing, a motor and a scroll assembly, wherein the housing is provided with an air inlet guide and is configured to enclose a low-pressure cavity; the motor is arranged in the low-pressure cavity, and a side gap is arranged between the stator of the motor and the housing; the motor is provided with a rotating shaft; the scroll assembly is formed with a compression chamber for compressing refrigerant gas, and is configured to rotate under the control of the rotating shaft of the motor to compress the refrigerant gas by using the compression chamber; the refrigerant gas entering from the air inlet guide is configured to at least partially flow along the side gap from top to bottom, and then flow to the compression chamber after absorbing the heat generated by the motor during operation.

[0037] During the operation of the scroll compressor of the present disclosure, the refrigerant gas enters the housing from the air inlet guide, and then at least part of the refrigerant gas entering from the air inlet guide flows along the side gap from top to bottom, and then flows to the compression chamber, and then is discharged from the scroll compressor after being compressed in the compression chamber of the scroll assembly.

[0038] In the scroll compressor of the present disclosure, since the side gap is arranged between the stator of the motor and the housing, at least part of the refrigerant gas flows along the side gap from top to bottom, and since the temperature of the refrigerant gas is generally lower than the temperature of the motor, the refrigerant gas can cool the motor when passing through the side gap, thereby effectively discharging the heat generated by the motor during operation, reducing the temperature of the motor, and further prolonging the service life of the motor.

[0039] For the convenience of understanding, the specific structure of the scroll compressor of the present disclosure and the working principle thereof will be described in detail below with reference to Figures 1 to 7 one embodiment.

[0040] The present disclosure provides a scroll compressor, which at least comprises a housing 10, a motor 20 and a scroll assembly 30, wherein the housing 10 is provided with an air inlet guide 11 and is configured to enclose a low-pressure cavity 12. It can be understood that, as shown in Figure 1 The housing 10 is also provided with an air outlet 15 for discharging the compressed refrigerant gas from the scroll compressor; the low-pressure cavity 12 is used to install various structures required by the scroll compressor.

[0041] The motor 20 is arranged in the low-pressure cavity 12, and a side gap 13 is arranged between the stator 22 of the motor 20 and the housing 10. The motor 20 is provided with a rotating shaft 21. It can be understood that the motor 20 comprises a stator 22 and a rotor 23 arranged in the stator 22, and the rotating shaft 21 is arranged in the rotor 23; the motor 20 can also comprise an upper coil 24 and a lower coil 25, which are used to pass current to drive the rotor 23 to rotate relative to the stator 22.

[0042] The scroll assembly 30 is formed with a compression chamber for compressing refrigerant gas and is configured to be controlled by the rotating shaft 21 of the motor 20 to compress the refrigerant gas by the compression chamber. Specifically, the scroll assembly 30 comprises a moving scroll 31 and a stationary scroll 32, and the compression chamber for compressing the refrigerant gas is formed between the moving scroll 31 and the stationary scroll 32, and the moving scroll 31 can be controlled to rotate by the rotating shaft 21, so as to compress the refrigerant gas by the compression chamber.

[0043] The refrigerant gas entering from the air inlet guide 11 is configured to at least partially flow along the side gap 13 from top to bottom, and after absorbing the heat generated by the motor 20 during operation, the refrigerant gas flows to the compression chamber.

[0044] During the operation of the scroll compressor of the present disclosure, the refrigerant gas enters the housing 10 from the air inlet guide 11, and then at least part of the refrigerant gas entering from the air inlet guide 11 flows along the side gap 13 from top to bottom, and then flows to the compression chamber, and then is compressed in the compression chamber of the scroll assembly 30 and is discharged from the scroll compressor.

[0045] Among them, since the side gap 13 is arranged between the stator 22 of the motor 20 and the housing 10, at least part of the refrigerant gas flows along the side gap 13 from top to bottom, and since the temperature of the refrigerant gas is generally lower than the temperature of the motor 20, the refrigerant gas can cool the motor 20 when passing through the side gap 13, thereby effectively discharging the heat generated by the motor 20 during operation, reducing the temperature of the motor 20, and thereby prolonging the service life of the motor 20.

[0046] Specifically, as shown in Figure 1 and Figure 4As shown, in one embodiment of the present disclosure, the housing 10 is provided with an air inlet pipe 14, the opening of the air inlet pipe 14 at the outer end of the housing 10 is configured as an air suction inlet 141, and the opening of the air inlet pipe 14 at the inner end of the housing 10 is configured to be communicated to the air inlet guide 11; the refrigerant gas is configured to enter the air inlet pipe 14 from the air suction inlet 141, flow along the air inlet pipe 14, flow out of the air inlet guide 11, and then flow downward along the side gap 13 at least partially to absorb the heat generated by the motor 20 during operation, and then flow to the compression chamber.

[0047] In one specific embodiment of the present disclosure, the opening of the air inlet pipe 14 at the inner end of the housing 10 can be communicated to the air inlet guide 11 through a pipeline or a flow guide device, so that during the operation of the scroll compressor of the present disclosure, the refrigerant gas outside the scroll compressor enters the air inlet pipe 14 from the air suction inlet 141 of the air inlet pipe 14 at the outer end of the housing 10, flows along the air inlet pipe 14, and then flows out of the inner end opening of the air inlet pipe 14, and then flows to the air inlet guide 11 under the guidance of the pipeline or the flow guide device, and then flows out of the air inlet guide 11 and flows to the compression chamber of the scroll assembly 30.

[0048] In another specific embodiment of the present disclosure, the opening of the air inlet pipe 14 at the inner end of the housing 10 is configured as the air inlet guide 11. That is, during the operation of the scroll compressor of the present disclosure, the refrigerant gas outside the scroll compressor enters the air inlet pipe 14 from the air suction inlet 141 of the air inlet pipe 14 at the outer end of the housing 10, flows along the air inlet pipe 14, and then flows to the air inlet guide 11 at the inner end of the air inlet pipe 14, and then flows out of the air inlet guide 11 and flows to the compression chamber of the scroll assembly 30. The present disclosure takes this embodiment as a preferred embodiment, so that the inner end opening of the air inlet pipe 14 and the air inlet guide 11 are combined into one, the internal pipeline structure of the scroll compressor is simplified, and the production difficulty and cost of the scroll compressor are reduced.

[0049] Specifically, as shown, Figure 7 As shown, in one embodiment of the present disclosure, the air inlet pipe 14 is a straight pipe and is configured to penetrate the housing 10 in the horizontal direction, and the upper end edge is configured to protrude into the low-pressure cavity 12 more than the lower end edge, so that the air inlet guide 11 is inclined downward.

[0050] As the intake pipe 14 is a straight pipe and extends through the housing 10 in the horizontal direction, the upper end edge is more protruded into the low-pressure cavity 12 than the lower end edge, so that the intake guide port 11 is inclined downward. After the refrigerant gas enters the intake pipe 14, it flows in the intake pipe 14 in the horizontal direction until it flows out of the intake guide port 11. As the intake guide port 11 is inclined downward, the refrigerant gas flows downward along the intake guide port 11. In this way, part of the refrigerant gas flows into the side gap 13, flows along the side gap 13, and absorbs the heat generated by the motor 20 during operation. Compared with the prior art, the gas guide structure of the scroll compressor of the present disclosure is simple, has small manufacturing difficulty, and low processing cost.

[0051] In another embodiment of the present disclosure, as shown in Figure 5 the intake pipe 14 is configured to extend through the housing 10 in the horizontal direction and is bent downward in the low-pressure cavity 12, so that the intake guide port 11 is downward. In this way, after the refrigerant gas enters the intake pipe 14, it flows in the intake pipe 14 in the horizontal direction and flows downward at the bent part of the intake pipe 14 until it flows out of the intake guide port 11.

[0052] As the extension direction of the rear section of the intake pipe 14 and the orientation of the intake guide port 11 are downward, after the refrigerant gas flows out of the intake guide port 11, it continues to flow downward along the vertical direction. Thus, most of the refrigerant gas can flow into the side gap 13 from the refrigerant gas, flow along the side gap 13 from top to bottom, absorb the heat generated by the motor 20 during operation, and finally flow into the compression chamber of the scroll assembly 30. Compared with the prior art, the gas guide structure of the scroll compressor of the present disclosure is simple, has small manufacturing difficulty, and low processing cost.

[0053] It can be understood that in one embodiment of the present disclosure, the orientation of the intake guide port 11 can be vertically downward. In this way, after the refrigerant gas enters the intake pipe 14, it can flow vertically downward at the bent part of the intake pipe 14 until it flows out of the intake guide port 11. In another embodiment of the present disclosure, the orientation of the intake guide port 11 can also be inclined downward, which is not limited herein.

[0054] In another embodiment of the present disclosure, as shown in Figure 6 the housing 10 is provided with the intake pipe 14, which is configured to extend through the housing 10 in the horizontal direction and is provided with a blocking wall 142 at the end in the low-pressure cavity 12. The intake pipe 14 is provided with at least one through hole in the side wall below the center axis in the low-pressure cavity 12 as the intake guide port 11.

[0055] As the intake pipe 14 penetrates the shell 10 in the horizontal direction and is provided with a blocking wall 142 at the end in the low-pressure cavity 12, the intake pipe 14 is provided with at least one through hole on the side wall below the center axis in the low-pressure cavity 12 as the intake guide port 11, so that the refrigerant gas, after flowing to the blocking wall 142 provided at the end of the intake pipe 14 in the low-pressure cavity 12, is blocked by the blocking wall 142 and cannot continue to flow forward, but can only flow out from the through hole on the bottom wall of the intake pipe 14; and after the refrigerant gas flows out from the through hole on the bottom wall of the intake pipe 14, part of the refrigerant gas continues to flow downward and flows into the side gap 13, flows downward along the side gap 13, absorbs the heat generated by the motor 20 during operation, and finally flows into the compression chamber of the scroll assembly 30. Compared with the prior art, the gas guide structure of the scroll compressor of the present disclosure is simple, has small manufacturing difficulty, and has relatively low processing cost.

[0056] As shown in Figure 1 , in one embodiment of the present disclosure, the intake pipe 14 is provided with a through opening on the side wall below the center axis in the low-pressure cavity 12 and the lower part of the blocking wall 142 at the end in the low-pressure cavity 12 as the intake guide port 11, and the intake guide port 11 is inclined downward.

[0057] That is, the side wall of the intake pipe 14 below the center axis in the low-pressure cavity 12 is hollowed out, and the lower part of the blocking wall 142 at the end in the low-pressure cavity 12 is also hollowed out, and the two parts form a through opening as the intake guide port 11, so that Figure 1 it can be seen that the intake guide port 11 is inclined downward, so that the refrigerant gas, after flowing to the blocking wall 142 provided at the end of the intake pipe 14 in the low-pressure cavity 12, is blocked by the blocking wall 142 and cannot continue to flow forward, but can only flow out from the lower intake guide port 11 into the side gap 13, and during the process of flowing out from the lower intake guide port 11, the refrigerant gas flows out from the lower intake guide port 11, which can effectively reduce the impact of the refrigerant gas on the internal structure of the scroll compressor.

[0058] As shown in Figure 2 and Figure 3 , in another embodiment of the present disclosure, a flow guide 16 is provided at the position corresponding to the intake guide port 11 in the low-pressure cavity 12, and the flow guide 16 is configured to guide the refrigerant gas flowing out from the intake guide port 11 to flow downward along the side gap 13, so that after absorbing the heat generated by the motor 20 during operation, the refrigerant gas flows into the compression chamber.

[0059] In this way, as the refrigerant gas flows along the inlet pipe 14, after exiting from the inlet guide port 11, it flows to the guide member 16. Under the guidance of the guide member 16, the flow direction rotates to top to bottom, thus flowing along the side gap 13 to absorb the heat generated by the motor 20 during operation. Compared with the prior art, the scroll compressor of this disclosure only requires the addition of the guide member 16 in the low-pressure chamber 12, without modifying other structures, thereby reducing manufacturing costs.

[0060] Furthermore, such as Figure 2 As shown, in one embodiment of this disclosure, the flow guide 16 is provided with an arc-shaped flow guide surface 161. The refrigerant gas flowing out from the air inlet guide port 11 is configured to rotate to flow downward under the flow guide effect of the flow guide surface 161 and continue to flow from top to bottom along the side gap 13.

[0061] When the refrigerant gas flows to the guide member 16, the guide member 16 is provided with an arc-shaped guide surface 161. Under the guiding effect of the guide surface 161, the flow direction naturally rotates to from top to bottom, and then it can flow along the side gap 13 to absorb the heat generated by the motor 20 during operation. By providing the arc-shaped guide surface 161, the impact of the refrigerant gas on the internal structure of the scroll compressor can be effectively reduced.

[0062] like Figure 1 As shown, in one embodiment of this disclosure, the scroll compressor further includes a frame 40, which is disposed in the low-pressure chamber 12 and located above the motor 20. The rotating shaft 21 is configured to extend into the frame 40, so that the rotating shaft 21 can be fixedly connected to the moving scroll member 31 of the scroll assembly 30, thereby driving the moving scroll member 31 to rotate relative to the stationary scroll member 32 to compress the refrigerant gas.

[0063] In another embodiment of this disclosure, the refrigerant gas entering from the air inlet 11 is configured to flow entirely from top to bottom along the side gap 13 to absorb the heat generated by the motor 20 during operation before flowing to the compression chamber.

[0064] In the operation of the scroll compressor disclosed herein, refrigerant gas enters the housing 10 through the inlet guide port 11. Then, all the refrigerant gas entering through the inlet guide port 11 flows from top to bottom along the side gap 13, and then flows to the compression chamber. After being compressed in the compression chamber of the scroll assembly 30, it is discharged from the scroll compressor. This can effectively improve the cooling effect of the scroll compressor of this disclosure on the motor 20, fully cool the motor 20, effectively dissipate the heat generated by the motor 20 during operation, reduce the temperature of the motor 20, and extend the service life of the motor 20.

[0065] like Figure 1As shown, in one embodiment of the present disclosure, the motor 20 further comprises an upper winding 24 and a lower winding 25, the upper winding 24 is located above the stator 22, and the lower winding 25 is located below the stator 22; the air inlet guide 11 is configured to be located at a corresponding position of the upper winding 24, wherein the refrigerant gas entering from the air inlet guide 11 is configured to flow at least partially from top to bottom along the side gap 13 after cooling the upper winding 24, and then flow upward to the compression chamber after absorbing the heat of the stator 22 and the lower winding 25 of the motor 20.

[0066] That is, in the working process of the scroll compressor of the present disclosure, the refrigerant gas enters the shell 10 from the air inlet guide 11; since the air inlet guide 11 is located at a corresponding position of the upper winding 24, the refrigerant gas entering from the air inlet guide 11 will first cool the upper winding 24 of the motor 20, and then at least part of the refrigerant gas will flow from top to bottom along the side gap 13 to the lower winding 25, thereby absorbing the heat of the stator 22 and the lower winding 25 of the motor 20, and then flowing upward to the compression chamber. In this way, the scroll compressor of the present disclosure can effectively cool the upper winding 24 and the lower winding 25 of the motor 20 using the refrigerant gas, and effectively discharge the heat generated by the upper winding 24 and the lower winding 25 during the working process.

[0067] As shown, Figure 1 in one embodiment of the present disclosure, the bottom of the low-pressure cavity 12 is provided with an oil pool 17, the oil pool 17 is configured to contain machine oil, and after the refrigerant gas entering from the air inlet guide 11 is configured to cool the upper winding 24, at least part of it flows from top to bottom along the side gap 13 to the oil pool 17, and then carries part of the machine oil, and then flows upward along the side gap 13 to the compression chamber.

[0068] That is, in the working process of the scroll compressor of the present disclosure, after the refrigerant gas entering from the air inlet guide 11 cools the upper winding 24, at least part of it flows from top to bottom along the side gap 13 to the oil pool 17, and then carries part of the machine oil, and then flows upward along the side gap 13 to the compression chamber. Specifically, by controlling the proportion of the refrigerant gas reaching the oil pool 17, the overall oil-carrying rate of the refrigerant gas can be effectively adjusted to ensure that the overall oil-carrying rate of the refrigerant gas can be within a reasonable range.

[0069] As shown, Figure 1 Figure 1 in one embodiment of the present disclosure, the side gap 13 is configured to be annular; during the process of the refrigerant gas flowing along the side gap 13, it not only flows from top to bottom and from bottom to top along the axial direction, but also flows along the circumferential direction of the side gap 13 to cool the stator 22, the upper winding 24 and the lower winding 25 everywhere along the circumferential direction.

[0070] In the working process of the scroll compressor of the present disclosure, the refrigerant gas entering from the gas inlet guide 11 cools the upper winding 24, and at least part of the refrigerant gas flows along the circumferential direction of the side gap 13 in the process of flowing from top to bottom along the side gap 13, so as to cool the circumferential part of the stator 22, the upper winding 24 and the lower winding 25 adjacent to one side of the gas inlet guide 11, and after the refrigerant gas flows to the oil pool 17, it can flow to other positions of the circumferential direction of the low-pressure cavity 12, and then flow upward along the side gap 13 to the compression chamber; in the process of the refrigerant gas flowing upward, the refrigerant gas also flows along the circumferential direction of the side gap 13, so as to cool the circumferential part of the stator 22, the upper winding 24 and the lower winding 25 away from one side adjacent to the gas inlet guide 11, so as to ensure that the refrigerant gas can cool the stator 22, the upper winding 24 and the lower winding 25 everywhere in the circumferential direction, so as to avoid the accumulation of heat in part of the stator 22, the upper winding 24 and the lower winding 25, and ensure that the refrigerant gas can uniformly cool the motor 20.

[0071] The above has described the embodiments of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or technical improvement in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A scroll compressor characterized by, The application relates to a refrigerant compressor, comprising: a housing (10) provided with an air inlet guide (11) and configured to enclose a low-pressure cavity (12); a motor (20) arranged in the low-pressure cavity (12), a stator (22) of the motor (20) being provided with a side gap (13) with the housing (10), and the motor (20) being provided with a rotating shaft (21); a scroll assembly (30) provided with a compression chamber for compressing refrigerant gas and configured to rotate under the control of the rotating shaft (21) of the motor (20) to compress refrigerant gas by using the compression chamber; wherein the refrigerant gas entering from the air inlet guide (11) is configured to flow at least partially from top to bottom along the side gap (13) to flow to the compression chamber after absorbing heat generated by the motor (20) during operation.

2. The scroll compressor of claim 1, wherein The housing (10) is provided with an air inlet pipe (14), an opening at an outer end of the housing (10) is an air suction inlet (141), and an opening at an inner end of the housing (10) is configured to be communicated to the air inlet guide (11); the refrigerant gas is configured to enter the air inlet pipe (14) from the air suction inlet (141) and flow along the air inlet pipe (14), and flow out of the air inlet guide (11) to flow at least partially from top to bottom along the side gap (13) to flow to the compression chamber after absorbing heat generated by the motor (20) during operation.

3. The scroll compressor of claim 2, wherein, The opening at the inner end of the housing (10) is configured as the air inlet guide (11).

4. The scroll compressor of claim 3, wherein The air inlet pipe (14) is a straight pipe and is configured to penetrate the housing (10) in a horizontal direction, and an upper end edge is configured to protrude into the low-pressure cavity (12) more than a lower end edge, so that the air inlet guide (11) is inclined downward.

5. The scroll compressor of claim 3, wherein The air inlet pipe (14) is configured to penetrate the housing (10) in a horizontal direction and is bent downward in the low-pressure cavity (12), so that the air inlet guide (11) is downward.

6. The scroll compressor of claim 3, wherein The housing (10) is provided with an air inlet pipe (14) configured to penetrate the housing (10) in a horizontal direction and provided with a blocking wall (142) at an end in the low-pressure cavity (12), and the air inlet pipe (14) is provided with at least one through hole in a side wall below a central axis in the low-pressure cavity (12) to serve as the air inlet guide (11).

7. The scroll compressor of claim 6, wherein The air inlet pipe (14) is provided with a through opening in the side wall below the central axis in the low-pressure cavity (12) and in a lower part of the blocking wall (142) at the end in the low-pressure cavity (12) to serve as the air inlet guide (11), and the air inlet guide (11) is inclined downward.

8. The scroll compressor of claim 3, wherein, A flow guide member (16) is arranged in the low-pressure cavity at a position corresponding to the air inlet guide port (11), and is configured to guide the refrigerant gas flowing out of the air inlet guide port (11) to flow downward along the side gap (13) and then flow to the compression chamber after absorbing the heat generated by the motor (20) during operation.

9. The scroll compressor of claim 8, wherein, The flow guide member (16) is provided with an arc-shaped flow guide surface (161), and the refrigerant gas flowing out of the air inlet guide port (11) is configured to rotate downward under the flow guide action of the flow guide surface (161) and then continue to flow downward along the side gap (13).

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