Scroll compressor, air conditioner, and vehicle

Abstract

The utility model discloses a scroll compressor, air conditioner and vehicle, scroll compressor includes: casing, compression component and oil separation spare, and the casing is equipped with oil separation chamber, and the oil separation chamber has oil separation inlet and gas export, and the compression component is equipped with exhaust port, and the casing and compression component between define the exhaust chamber, and the exhaust port is linked together with the exhaust chamber, and the oil separation chamber is linked together with the exhaust chamber, and the oil separation spare is located in the oil separation chamber and forms a plurality of expansion parts, in the direction from oil separation inlet to gas export, a plurality of expansion parts are arranged in proper order, and every two expansion parts of adjacent setting are communicated through the contraction part. Thus, by making the oil separation spare form a plurality of expansion parts, and every two expansion parts of adjacent setting are communicated through the contraction part, to increase the times of refrigerant contraction and expansion in the exhaust process of scroll compressor, thereby improve the effect of reducing the exhaust pressure pulsation of scroll compressor, and then be favorable to reduce the noise of scroll compressor.

Description

Technical Field

[0001] This utility model relates to the field of scroll compressor technology, and in particular to a scroll compressor, an air conditioner, and a vehicle. Background Technology

[0002] Scroll compressors are characterized by high efficiency and stable operation, and are widely used in various air conditioning and heat pump systems; especially in the air conditioning systems of new energy vehicles, scroll compressors are the preferred solution.

[0003] In related technologies, during the exhaust process of scroll compressors, the refrigerant has limited contraction and diffusion effects, resulting in large exhaust pressure pulsations and thus high noise levels, which affects the user's hearing. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a scroll compressor, which effectively reduces the discharge pressure pulsation of the scroll compressor, thereby reducing the noise of the scroll compressor.

[0005] A scroll compressor includes: a housing having an oil separation chamber having an oil inlet and a gas outlet; a compression component having an exhaust port, the housing being disposed on one side of the compression component and defining an exhaust chamber between the housing and the compression component, the exhaust port communicating with the exhaust chamber, and the oil separation chamber communicating with the exhaust chamber through the oil inlet; and an oil separator disposed within the oil separation chamber, the oil separator having a plurality of expansion portions arranged sequentially in the direction from the oil inlet to the gas outlet, and every two adjacent expansion portions communicating through a contraction portion.

[0006] According to the present invention, the scroll compressor has multiple expansion portions formed on the oil separator, and each pair of adjacent expansion portions are connected by a contraction portion. This allows the refrigerant to undergo multiple contractions and expansions during its flow through the oil separator, increasing the number of refrigerant contractions and expansions during the exhaust process of the scroll compressor. This improves the effect of reducing exhaust pressure pulsations in the scroll compressor, thereby helping to reduce the noise of the scroll compressor.

[0007] According to some embodiments of the present invention, multiple contraction portions are provided, and at least two of the multiple contraction portions have different minimum cross-sectional areas.

[0008] According to some embodiments of the present invention, the expansion portion closest to the gas outlet among the plurality of expansion portions is defined as the end expansion portion, and the end expansion portion is fixed to the housing.

[0009] According to some embodiments of the present invention, the outer diameter of the end expansion portion is maximized to allow for an interference fit with the inner wall of the oil separation chamber.

[0010] According to some embodiments of the present invention, the outer peripheral wall of the remaining expansion portion is spaced apart from the inner wall of the oil separation chamber.

[0011] According to some embodiments of the present invention, at least a portion of the expansion portion has through holes on its wall surface. The through holes penetrate the expansion portion along the thickness direction of the side wall of the expansion portion, and the outer peripheral wall of the expansion portion with the through holes is spaced apart from the inner wall of the oil separation chamber.

[0012] According to some embodiments of this utility model, the diameter d of the through hole satisfies the relationship: 0.6mm≤d≤4.0mm.

[0013] According to some embodiments of this utility model, the diameter d of the through hole satisfies the relationship: 1.0mm≤d≤2.6mm.

[0014] According to some embodiments of the present invention, the ratio of the maximum cross-sectional area Dd of the expansion portion to the minimum cross-sectional area Ds of the contraction portion satisfies the following relationship: 1.2≤Dd / Ds≤4.0.

[0015] According to some embodiments of the present invention, the ratio of the maximum cross-sectional area Dd of the expansion portion to the minimum cross-sectional area Ds of the contraction portion satisfies the following relationship: 1.4≤Dd / Ds≤2.6.

[0016] According to some embodiments of the present invention, in the axial extension direction of the crankshaft of the compression component, the oil inlet is disposed closer to the bottom wall of the exhaust chamber than the exhaust port.

[0017] According to some embodiments of the present invention, the oil separator further includes an extension tube, which is connected to the one of the plurality of expansion portions closest to the oil separator inlet, and the extension tube extends toward the bottom wall of the oil separation chamber.

[0018] According to some embodiments of the present invention, the inlet end of the extension tube extends beyond the oil separation inlet in the direction toward the bottom wall of the oil separation chamber.

[0019] The second objective of this utility model is to provide an air conditioner.

[0020] An air conditioner comprising the aforementioned scroll compressor.

[0021] The air conditioner described above has the same advantages as the scroll compressor mentioned above, which will not be repeated here.

[0022] The third objective of this utility model is to provide a vehicle.

[0023] A vehicle comprising the aforementioned scroll compressor or the aforementioned air conditioner.

[0024] The vehicle described above has the same advantages as the aforementioned scroll compressor or air conditioner, which will not be elaborated upon here.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of the scroll compressor described in an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of the housing described in an embodiment of the present utility model;

[0029] Figure 3 for Figure 2 Sectional view at AA;

[0030] Figure 4 This is a schematic diagram of the structure of the oil separator described in an embodiment of the present invention;

[0031] Figure 5 This is a partial structural diagram of the oil separator described in an embodiment of the present invention. Figure 1 ;

[0032] Figure 6 This is a partial structural diagram of the oil separator described in an embodiment of the present invention. Figure 2 ;

[0033] Figure 7 This is a schematic diagram illustrating the effect of the diameter of the through hole on the exhaust pressure pulsation according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram illustrating the effect of the ratio of the maximum cross-sectional area of ​​the expansion portion to the minimum cross-sectional area of ​​the contraction portion on exhaust pressure pulsation and refrigeration performance according to an embodiment of the present invention.

[0035] Figure 9 This is a simplified structural diagram of the air conditioner described in an embodiment of the present utility model;

[0036] Figure 10 This is a simplified structural diagram of the vehicle described in an embodiment of the present utility model.

[0037] Figure label:

[0038] Scroll compressor 100, exhaust chamber 101

[0039] Shell 110, oil separation chamber 111, oil inlet 112, gas outlet 113, oil outlet 114.

[0040] Oil storage chamber 115, oil inlet 1151, oil return channel 116.

[0041] Compression component 120, exhaust port 121, crankshaft 122,

[0042] Oil separator 130, expansion section 131, end expansion section 1311

[0043] Shrinkage section 132, through hole 133, extension tube 134

[0044] Drive unit 140

[0045] Air conditioner 200, vehicle 300. Detailed Implementation

[0046] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0047] In the description of this utility model, it should be understood that the terms "bottom," "inner," "outer," "axial," "circumferential," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] The following is for reference. Figures 1-8 A scroll compressor 100 according to an embodiment of the present invention is described.

[0050] like Figure 1 As shown, the scroll compressor 100 according to an embodiment of the present invention includes: a housing 110 and a compression component 120. The housing 110 is provided with an oil separation chamber 111, which has an oil inlet 112 and a gas outlet 113. The compression component 120 is provided with an exhaust port 121. The housing 110 is located on one side of the compression component 120 and an exhaust chamber 101 is defined between the housing 110 and the compression component 120. The exhaust port 121 communicates with the exhaust chamber 101, and the oil separation chamber 111 communicates with the exhaust chamber 101 through the oil inlet 112.

[0051] For example, the compression component 120 is used to compress the refrigerant. The compressed refrigerant is discharged from the compression component 120 through the exhaust port 121 and further discharged into the exhaust chamber 101 connected to the exhaust port 121. The oil separation chamber 111 is connected to the exhaust chamber 101 through the oil separation inlet 112. The refrigerant can enter the oil separation chamber 111 through the oil separation inlet 112. During the flow process, the refrigerant will carry some lubricating oil. The lubricating oil carried by the refrigerant can be separated from the refrigerant in the oil separation chamber 111. The refrigerant after separation from the lubricating oil can be discharged from the oil separation chamber 111 through the gas outlet 113 to realize the refrigerant output of the scroll compressor 100.

[0052] Combination Figures 1 to 3 The scroll compressor 100 also includes an oil separator 130, which is located in the oil separation chamber 111. The oil separator 130 is used to separate the refrigerant from the lubricating oil it carries, which helps to improve the separation effect of the refrigerant and lubricating oil, thereby improving the dryness of the refrigerant discharged by the scroll compressor 100.

[0053] Further reference Figure 4 The oil separator 130 has a plurality of expansion sections 131 arranged sequentially in the direction from the oil separator inlet 112 to the gas outlet 113, and each pair of adjacent expansion sections 131 are connected by a contraction section 132.

[0054] In other words, when the refrigerant flows into the oil separator chamber 111 and further into the oil separator component 130, the refrigerant can flow through the contraction section 132 and the expansion section 131. The maximum cross-sectional area of ​​the contraction section 132 is smaller than the minimum cross-sectional area of ​​the expansion section 131. When the refrigerant flows through the contraction section 132, the refrigerant contracts; when the refrigerant flows through the expansion section 131, the refrigerant expands. Thus, by providing multiple expansion sections 131 and contraction sections 132 on the oil separator component 130, the refrigerant can undergo multiple contractions and expansions when flowing through the oil separator component 130, which helps to reduce the discharge pressure pulsation of the scroll compressor 100, thereby helping to reduce the noise of the scroll compressor 100.

[0055] In related technologies, a set of contraction and expansion structures is formed only through the exhaust port and exhaust chamber, which results in limited effect of airflow contraction and expansion during the flow process. This leads to limited effect of reducing exhaust pressure pulsation in scroll compressors, which in turn easily leads to high noise in scroll compressors.

[0056] This application achieves multiple expansion portions 131 on the oil separator 130, with each pair of adjacent expansion portions 131 connected by a contraction portion 132. This allows the refrigerant to undergo multiple contractions and expansions during its flow through the oil separator 130, increasing the number of contractions and expansions of the refrigerant during the exhaust process of the scroll compressor 100. This improves the effect of reducing exhaust pressure pulsations in the scroll compressor 100, thereby helping to reduce the noise of the scroll compressor 100.

[0057] Through simulation analysis of the scroll compressor 100 of this utility model embodiment, compared with the scroll compressor 130 without the shrinking part 132 and the expanding part 131 in the oil separator 130, the scroll compressor 100 of this application can reduce the first-order pulsation by at least 10%, effectively improving the listening experience of the scroll compressor 100.

[0058] Combination Figures 4 to 6 In some embodiments of this utility model, multiple contraction portions 132 are provided. For example, the air inlet ends of multiple expansion portions 131 can all be provided with contraction portions 132, so that the refrigerant can undergo multiple contractions and expansions when flowing through the oil separator 130, which is beneficial to reduce the exhaust pressure pulsation of the scroll compressor 100.

[0059] Further reference Figure 5At least two of the contraction sections 132 have different minimum cross-sectional areas. For example, there may be four contraction sections 132. The minimum cross-sectional areas of the two contraction sections 132 located near the oil separator inlet 112 may be different, or the minimum cross-sectional areas of the three contraction sections 132 located near the oil separator inlet 112 may be different, or the minimum cross-sectional areas of all four contraction sections 132 may be different.

[0060] By making at least two of the multiple contraction sections 132 have different minimum cross-sectional areas, it is beneficial to further improve the disturbance effect of the oil separator 130 on the refrigerant, thereby further reducing the discharge pressure pulsation of the scroll compressor 100.

[0061] It is understandable that the specific number of contraction sections 132 and the number of contraction sections 132 with different minimum cross-sectional areas can be determined according to actual production requirements, and no specific limit is made here.

[0062] Combination Figure 1 and Figure 3 In some embodiments of this utility model, the expansion portion 131 closest to the gas outlet 113 among the plurality of expansion portions 131 is defined as the end expansion portion 1311, and the end expansion portion 1311 is fixed to the housing 110.

[0063] For example, the oil separator 130 can be installed from the gas outlet 113 into the oil separation chamber 111. By fixing the end expansion portion 1311 to the housing 110, it is beneficial to improve the operational convenience when installing the oil separator 130 and facilitate the positioning and installation of the oil separator 130, thereby improving the production and assembly efficiency of the scroll compressor 100.

[0064] Reference Figure 3 In some embodiments of this utility model, the outer diameter of the end expansion portion 1311 is maximized to be interference-fitted with the inner wall of the oil separation chamber 111. By making the end expansion portion 1311 interference-fitted with the inner wall of the oil separation chamber 111, it is beneficial to improve the assembly stability of the oil separator 130. At the same time, there is no need to set additional mounting parts, which is beneficial to simplify the component settings of the scroll compressor 100, thereby simplifying the production and assembly steps of the scroll compressor 100.

[0065] It should be noted that "the inner wall of the oil separation chamber 111" refers to the side wall of the oil separation chamber 111 that is opposite to the oil separator 130.

[0066] Optionally, the inner wall of the oil separation chamber 111 may also be provided with a slot structure, and the oil separator 130 can be engaged with the inner wall of the oil separation chamber 111 through the slot structure to facilitate the positioning and installation of the oil separator 130. It is understood that the specific installation method of the oil separator 130 can be determined according to the actual production requirements, and no specific limitation is made here, as long as the assembly stability of the oil separator 130 is guaranteed.

[0067] like Figure 3 As shown, the outer peripheral walls of the remaining expansion portions 131 are spaced apart from the inner wall of the oil separation chamber 111. In other words, there are gaps between the outer peripheral walls of the remaining expansion portions 131 (excluding the end expansion portions 1311) and the inner wall of the oil separation chamber 111. This helps to reduce the friction between the oil separator 130 and the inner wall of the oil separation chamber 111 during installation, thereby improving the assembly convenience of the oil separator 130.

[0068] Combination Figure 3 and Figure 5 In some embodiments of this utility model, at least a portion of the expansion portion 131 has through holes 133 on its wall surface. For example, four expansion portions 131 may be provided, and one or more of the four expansion portions 131 may have through holes 133. The through holes 133 may be arranged at intervals along the circumferential direction of the expansion portion 131 on the side wall of the expansion portion 131. The through holes 133 penetrate the expansion portion 131 along the thickness direction of the side wall of the expansion portion 131. The through holes 133 can further improve the diffusion effect of the refrigerant at the expansion portion 131, thereby helping to further reduce the exhaust pressure pulsation of the scroll compressor 100, and thus helping to reduce the noise of the scroll compressor 100.

[0069] It is understandable that the specific number of expansion sections 131 and the arrangement of through holes 133 on expansion sections 131 can be determined according to actual production requirements, and no specific restrictions are made here.

[0070] Further integration Figure 3 and Figure 5 The outer peripheral wall of the expansion portion 131 with through hole 133 is spaced apart from the inner wall of the oil separation chamber 111 to prevent the through hole 133 from being blocked by the inner peripheral wall of the oil separation chamber 111, thus affecting the diffusion effect of the through hole 133 on the refrigerant and thus helping to ensure the diffusion effect of the refrigerant at the through hole 133.

[0071] It should be noted that "the outer peripheral wall of the expansion section 131" refers to the side wall of the expansion section 131 that faces the inner wall of the oil separation chamber 111.

[0072] like Figure 7As shown, in some embodiments of this utility model, the diameter d of the through hole 133 satisfies the relationship: 0.6mm≤d≤4.0mm.

[0073] When setting through holes 133 on the oil separator 130, it is necessary to consider not only the influence of through holes 133 on exhaust pressure pulsation, but also the ease of machining through holes 133. If the diameter of through holes 133 is too large, its effect on reducing exhaust pressure pulsation will be reduced. If the diameter of through holes 133 is too small, it will lead to high machining difficulty and affect the machining efficiency of oil separator 130. By making the diameter d of through holes 133 satisfy the relationship: 0.6mm≤d≤4.0mm, it is beneficial to ensure the effect of through holes 133 on reducing exhaust pressure pulsation, and at the same time, it is beneficial to reduce the machining difficulty of through holes 133, thereby improving the machining production efficiency of oil separator 130.

[0074] Reference Figure 7 The diameter d of the through hole 133 satisfies the relationship: 1.0mm≤d≤2.6mm.

[0075] When the diameter d of the through hole 133 is less than 1.0 mm, although the reduction effect on exhaust pressure pulsation is good, it will lead to greater difficulty in machining the through hole 133. When the diameter d of the through hole 133 is greater than 2.6 mm, although the machining convenience of the through hole 133 can be effectively improved, it will lead to poor reduction effect on exhaust pressure pulsation. Therefore, by setting the diameter d of the through hole 133 to 1.0 mm to 2.6 mm, the reduction effect of the through hole 133 on exhaust pressure pulsation can be improved, and the machining difficulty of the through hole 133 can be reduced, thereby improving the machining efficiency of the oil separator 130.

[0076] like Figure 8 As shown, in some embodiments of this utility model, the ratio of the maximum cross-sectional area Dd of the expansion portion 131 to the minimum cross-sectional area Ds of the contraction portion 132 satisfies the following relationship: 1.2≤Dd / Ds≤4.0.

[0077] In designing the oil separator 130, it is necessary to consider not only its effect on reducing discharge pressure pulsation but also its impact on the refrigeration performance of the scroll compressor 100. Specifically, the ratio of the maximum cross-sectional area of ​​the expansion section 131 to the minimum cross-sectional area of ​​the contraction section 132 affects discharge pressure pulsation and the COP (Coefficient of Performance) of the scroll compressor 100. By ensuring that the ratio of the maximum cross-sectional area Dd of the expansion section 131 to the minimum cross-sectional area of ​​the contraction section 132 satisfies the relationship: 1.2≤Dd / Ds≤4.0, it is beneficial to improve the oil separator 130's effect on reducing discharge pressure pulsation in the scroll compressor 100. Simultaneously, it can result in a larger COP for the scroll compressor 100, thereby reducing discharge pressure pulsation and noise while maintaining the refrigeration effect of the scroll compressor 100, ultimately improving its performance.

[0078] Reference Figure 8 In some embodiments of this utility model, the ratio of the maximum cross-sectional area Dd of the expansion portion 131 to the minimum cross-sectional area Ds of the contraction portion 132 satisfies the relationship: 1.4 ≤ Dd / Ds ≤ 2.6. When Dd / Ds < 1.4, although the refrigeration performance coefficient of the scroll compressor 100 is relatively large, the discharge pressure pulsation of the scroll compressor 100 is also relatively large, resulting in relatively poor performance of the scroll compressor 100. When Dd / Ds > 2.6, although the discharge pressure pulsation of the scroll compressor 100 can be effectively reduced, it will also lead to a decrease in the performance of the scroll compressor. The decrease in the coefficient of performance (COP) of the scroll compressor 100 affects its performance. Therefore, by ensuring that the ratio of the maximum cross-sectional area Dd of the expansion section 131 to the minimum cross-sectional area Ds of the contraction section 132 satisfies the relationship: 1.4≤Dd / Ds≤2.6, the scroll compressor 100 achieves a high COP while minimizing discharge pressure pulsation. This reduces noise while effectively ensuring the cooling effect of the scroll compressor 100, thereby further improving its performance.

[0079] like Figure 2 As shown, in some embodiments of this utility model, in the axial extension direction of the crankshaft 122 of the compression component 120, the oil inlet 112 is located closer to the bottom wall of the exhaust chamber 101 than the exhaust port 121.

[0080] For example, on the axial projection plane of the crankshaft 122 of the compression member 120, the orthographic projection plane of the exhaust port 121 can be located at the center of gravity of the housing 110, and the orthographic projection plane of the oil inlet 112 can be located below the center of gravity of the housing 110, that is, the oil inlet 112 is located closer to the bottom wall of the exhaust chamber 101 than the exhaust port 121.

[0081] When the refrigerant flow rate and velocity are low, a large amount of lubricating oil will accumulate in the exhaust chamber 101, resulting in a reduction in the effective gas storage volume of the exhaust chamber 101 and poor expansion effect of the refrigerant in the exhaust chamber 101. This can easily lead to pulsation of the exhaust pressure and high noise in the scroll compressor 100. By positioning the oil separator inlet 112 below the center of gravity of the housing 110, the refrigerant needs to flow downward (i.e. towards the bottom wall of the exhaust chamber 101) as it flows from the exhaust chamber 101 to the oil separator inlet 112. The refrigerant can carry the lubricating oil deposited at the bottom of the exhaust chamber 101 into the oil separator chamber 111, thereby reducing the accumulation of lubricating oil in the exhaust chamber 101. This helps to increase the effective gas storage volume of the exhaust chamber 101, which in turn helps to improve the expansion effect of the refrigerant in the exhaust chamber 101, thereby reducing the pulsation of the exhaust pressure of the scroll compressor 100.

[0082] Combination Figures 1 to 4 In some embodiments of the present invention, the oil separator 130 further includes an extension tube 134, which is connected to one of the plurality of expansion portions 131 closest to the oil separator inlet 112, and the extension tube 134 extends toward the bottom wall of the oil separation chamber 111.

[0083] For example, the extension pipe 134 can be directly connected to the expansion section 131 closest to the oil separator inlet 112 among the multiple expansion sections 131, or the extension pipe 134 can be connected to the expansion section 131 closest to the oil separator inlet 112 among the multiple expansion sections 131 through the contraction section 132, and the maximum cross-sectional area of ​​the extension pipe 134 is smaller than the minimum cross-sectional area of ​​the expansion section 131. When the refrigerant enters the oil separation chamber 111, the refrigerant can flow further into the expansion section 131 through the extension pipe 134, so that the refrigerant can achieve contraction and expansion during the process of flowing from the extension pipe 134 to the expansion section 131, thereby reducing the discharge pressure pulsation of the scroll compressor 100.

[0084] Meanwhile, as the refrigerant flows along the extension pipe 134, the refrigerant and the lubricating oil it carries can be separated. The separated lubricating oil flows to the bottom wall of the oil separation chamber 111, and the refrigerant is discharged from the oil separation chamber 111 through the gas outlet 113 connected to the oil separation chamber 111. Thus, by setting the extension pipe 134, it is beneficial to extend the flow path of the refrigerant on the oil separator 130 and improve the separation effect of the refrigerant and the lubricating oil it carries.

[0085] Combination Figures 1 to 3 In some embodiments of this utility model, the inlet end of the extension tube 134 extends beyond the oil inlet 112 in the direction toward the bottom wall of the oil separation chamber 111.

[0086] It should be noted that "the inlet end of the extension tube 134" refers to the end of the extension tube 134 that is away from the expansion cavity.

[0087] In other words, in the axial projection plane of the crankshaft 122 of the compression component 120, the orthographic projection plane of the inlet end of the extension pipe 134 is located below the orthographic projection plane of the oil separator inlet 112. That is, the inlet end of the extension pipe 134 is located closer to the bottom wall of the oil separation chamber 111 than the oil separator inlet 112. When the refrigerant flows into the oil separation chamber 111 from the oil separator inlet 112, it needs to flow further towards the bottom wall of the oil separation chamber 111 so as to flow into the oil separator component 130 through the inlet end of the extension pipe 134.

[0088] Therefore, by extending the inlet section of the extension pipe 134 beyond the oil separator inlet 112 towards the bottom wall of the oil separator chamber 111, the flow path of the refrigerant is further extended, which is beneficial to further improve the separation effect of the refrigerant and the lubricating oil it carries, thereby further improving the dryness of the refrigerant discharged from the scroll compressor 100.

[0089] Combination Figures 3 to 6 In some embodiments of this utility model, each expansion portion 131 and the contraction portion 132 connected to its intake end form a set of contraction-expansion structures. Considering the arrangement space required for the oil separator 130 and the effect of the oil separator 130 on reducing exhaust pressure pulsation, the contraction-expansion structures on the oil separator 130 can be set to 3 to 8 sets. When there are fewer than 3 sets of contraction-expansion structures, the effect on reducing exhaust pressure pulsation of the scroll compressor 100 is poor. When there are more than 8 sets of contraction-expansion structures, the volume of the oil separator 130 needs to be increased, resulting in a large space occupied by the oil separator 130.

[0090] Therefore, setting the shrinkage and expansion structure on the oil separator 130 to 3 to 8 sets can not only ensure the oil separator 130's effect on reducing exhaust pressure pulsation, but also prevent the oil separator 130 from occupying too much layout space, and at the same time improve the processing convenience of the oil separator 130.

[0091] It should be noted that when the expansion section 131 closest to the oil separator inlet 112 among the multiple expansion sections 131 is directly connected to the extension pipe 134, this expansion section 131 and the extension pipe 134 form a set of contraction and expansion structures.

[0092] Combination Figures 1 to 3In some embodiments of this utility model, the housing 110 is further provided with an oil storage chamber 115. The wall of the oil storage chamber 115 is provided with an oil inlet 1151, and the wall of the oil separation chamber 111 is provided with an oil outlet 114. The oil inlet 1151 and the oil outlet 114 are connected through the oil return channel 116 to realize the connection between the oil separation chamber 111 and the oil storage chamber 115. The lubricating oil that has been separated from the refrigerant in the oil separation chamber 111 can flow into the oil storage chamber 115 in sequence through the oil outlet 114, the oil return channel 116 and the oil inlet 1151, so as to prevent the lubricating oil from depositing in the oil separation chamber 111.

[0093] like Figure 1 As shown, in some embodiments of the present invention, the scroll compressor 100 further includes a drive device 140, which is connected to the crankshaft 122 of the compression component 120 to drive the crankshaft 122 of the compression component 120 to rotate, thereby driving the compression component 120 to operate to compress the refrigerant.

[0094] The drive unit 140 can be configured as a motor.

[0095] like Figure 9 As shown, the air conditioner 200 according to an embodiment of the present utility model includes the scroll compressor 100 described above.

[0096] Since the air conditioner 200 is equipped with the aforementioned scroll compressor 100, by forming multiple expansion portions 131 on the oil separator 130, and connecting every two adjacent expansion portions 131 through a contraction portion 132, the refrigerant can undergo multiple contractions and expansions during its flow through the oil separator 130. This increases the number of refrigerant contractions and expansions during the exhaust process of the scroll compressor 100, thereby improving the effect of reducing exhaust pressure pulsations in the scroll compressor 100 and thus helping to reduce the noise of the scroll compressor 100.

[0097] Reference Figure 10 The vehicle 300 according to the present utility model embodiment includes the scroll compressor 100 or the air conditioner 200 described above.

[0098] Since the vehicle 300 is equipped with the aforementioned scroll compressor 100 or the aforementioned air conditioner 200, by forming multiple expansion portions 131 on the oil separator 130, and connecting every two adjacent expansion portions 131 through a contraction portion 132, the refrigerant can undergo multiple contractions and expansions during its flow through the oil separator 130. This increases the number of refrigerant contractions and expansions during the exhaust process of the scroll compressor 100, thereby improving the effect of reducing exhaust pressure pulsations of the scroll compressor 100 and thus helping to reduce the noise of the scroll compressor 100.

[0099] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0100] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A scroll compressor, characterized in that, include: The housing is provided with an oil separation chamber, which has an oil inlet and a gas outlet; A compression component is provided with an exhaust port. A housing is disposed on one side of the compression component and an exhaust chamber is defined between the housing and the compression component. The exhaust port communicates with the exhaust chamber. An oil separation chamber communicates with the exhaust chamber through an oil separation inlet. An oil separator is disposed within the oil separation chamber. The oil separator has multiple expansion sections arranged sequentially in the direction from the oil inlet to the gas outlet, and each pair of adjacent expansion sections are connected by a contraction section.

2. The scroll compressor according to claim 1, characterized in that, The contraction section is provided in multiple ways, and at least two of the contraction sections have different minimum cross-sectional areas.

3. The scroll compressor according to claim 1, characterized in that, The expansion portion closest to the gas outlet among the plurality of expansion portions is defined as the end expansion portion, and the end expansion portion is fixed to the housing.

4. The scroll compressor according to claim 3, characterized in that, The outer diameter of the end expansion portion is maximized to allow for an interference fit with the inner wall of the oil separation chamber.

5. The scroll compressor according to claim 4, characterized in that, The outer peripheral wall of the remaining expansion portion is spaced apart from the inner wall of the oil separation chamber.

6. The scroll compressor according to claim 1, characterized in that, At least a portion of the expansion portion has through holes on its wall surface. The through holes penetrate the expansion portion along the thickness direction of the side wall of the expansion portion, and the outer peripheral wall of the expansion portion with the through holes is spaced apart from the inner wall of the oil separation chamber.

7. The scroll compressor according to claim 6, characterized in that, The diameter d of the through hole satisfies the following relationship: 0.6mm≤d≤4.0mm.

8. The scroll compressor according to claim 7, characterized in that, The diameter d of the through hole satisfies the following relationship: 1.0mm≤d≤2.6mm.

9. The scroll compressor according to claim 1, characterized in that, The ratio of the maximum cross-sectional area Dd of the expansion portion to the minimum cross-sectional area Ds of the contraction portion satisfies the following relationship: 1.2≤Dd / Ds≤4.

0.

10. The scroll compressor according to claim 9, characterized in that, The ratio of the maximum cross-sectional area Dd of the expansion portion to the minimum cross-sectional area Ds of the contraction portion satisfies the following relationship: 1.4≤Dd / Ds≤2.

6.

11. The scroll compressor according to claim 1, characterized in that, In the axial extension direction of the crankshaft of the compression component, the oil inlet is positioned closer to the bottom wall of the exhaust chamber than the exhaust port.

12. The scroll compressor according to any one of claims 1-11, characterized in that, The oil separator also includes an extension tube connected to the one of the plurality of expansion sections closest to the oil separator inlet, the extension tube extending toward the bottom wall of the oil separation chamber.

13. The scroll compressor according to claim 12, characterized in that, The inlet end of the extension tube extends beyond the oil separation inlet in the direction toward the bottom wall of the oil separation chamber.

14. An air conditioner, characterized in that, Including the scroll compressor according to any one of claims 1-13.

15. A vehicle, characterized in that, Includes the scroll compressor according to any one of claims 1-13 or the air conditioner according to claim 14.

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