Scroll compressor, air conditioner and vehicle

Abstract

The scroll compressor comprises a compression component and a shell, the compression component is provided with an exhaust port, an exhaust cavity is defined between the shell and the compression component, the exhaust port is communicated with the exhaust cavity, the exhaust cavity is communicated with an oil separation cavity through an air outlet hole, and the oil separation cavity is communicated with the shell through the air outlet hole. The exhaust cavity comprises a plurality of expansion cavities communicated through a contraction part, the expansion cavities are sequentially arranged in the direction from the exhaust port to the air outlet hole, and the exhaust port and the air outlet hole are communicated with the corresponding expansion cavities respectively; the maximum sectional area of the contraction part is smaller than the minimum sectional area of the expansion cavity. Therefore, the exhaust cavity comprises the multiple expansion cavities which are sequentially arranged in the direction from the exhaust port to the air outlet hole, and the expansion cavities communicate with one another through the contraction parts, so that multiple times of contraction and expansion can be carried out in the process that a refrigerant flows through the exhaust cavity, and the effect of reducing the exhaust pressure pulsation of the scroll compressor can be improved; and therefore, the noise of the scroll compressor can be reduced.

Description

Technical Field

[0001] This invention relates to the field of scroll compressor technology, and more particularly 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. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a scroll compressor, wherein the discharge pressure pulsation of the scroll compressor can be effectively reduced, thereby reducing the noise of the scroll compressor.

[0005] A scroll compressor includes: a compression component having an exhaust port; a housing disposed on one side of the compression component and defining an exhaust chamber therebetween, the exhaust port communicating with the exhaust chamber; the housing also having an oil separation chamber; the exhaust chamber having an outlet for connecting the oil separation chamber and the exhaust chamber; the exhaust chamber including multiple expansion chambers arranged sequentially in the direction from the exhaust port to the outlet, each pair of adjacent expansion chambers being connected by a contraction section; the exhaust port and the outlet communicating with the corresponding expansion chamber; the maximum cross-sectional area of ​​the contraction section being smaller than the minimum cross-sectional area of ​​the expansion chamber.

[0006] According to an embodiment of the present invention, the scroll compressor includes a plurality of expansion chambers arranged sequentially from the exhaust port to the outlet port, and the expansion chambers are connected by a contraction section. This allows the refrigerant to undergo multiple contractions and expansions during its flow through the exhaust chamber, increasing the number of contractions and expansions during the refrigerant's flow. 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, limiting protrusions are formed on two opposing cavity walls of the exhaust cavity, and the opposing limiting protrusions extend toward each other and are spaced apart to define the contraction portion.

[0008] According to some embodiments of the present invention, the plurality of expansion chambers include a first expansion chamber, an intermediate expansion chamber, and a second expansion chamber. The exhaust port is connected to the first expansion chamber, and the air outlet is connected to the second expansion chamber. Both the first expansion chamber and the second expansion chamber are connected to the corresponding intermediate expansion chamber through the contraction portion.

[0009] According to some embodiments of the present invention, there are multiple intermediate expansion cavities and the volumes of the multiple intermediate expansion cavities are different.

[0010] According to some embodiments of the present invention, the volume of the first expansion cavity is the largest.

[0011] According to some embodiments of the present invention, the minimum cross-sectional area S1 of the contraction portion and the minimum cross-sectional area S2 of the exhaust port satisfy the relationship: 0.6≤S1 / S2≤2.5.

[0012] According to some embodiments of the present invention, the minimum cross-sectional area S1 of the contraction portion and the minimum cross-sectional area S2 of the exhaust port satisfy the relationship: 0.8≤S1 / S2≤1.5.

[0013] According to some embodiments of the present invention, the maximum cross-sectional area of ​​the vent is smaller than the minimum cross-sectional area of ​​the oil separation chamber.

[0014] According to some embodiments of the present invention, the housing further forms an oil storage cavity, which is connected to the oil separation cavity. A buffer cavity is formed in the expansion cavity that is connected to the exhaust port among the plurality of expansion cavities. At least a portion of the side plate defining the buffer cavity of the housing protrudes from the inner wall of the oil storage cavity in a direction toward the interior of the oil storage cavity.

[0015] According to some embodiments of the present invention, at least a portion of the buffer cavity is located above the air outlet in the height direction.

[0016] According to some embodiments of the present invention, the volume V1 of the exhaust chamber and the volume V2 of the oil storage chamber satisfy the relationship: V1 / V2≥2.

[0017] According to some embodiments of the present invention, the volume V1 of the exhaust chamber and the volume V2 of the oil storage chamber satisfy the relationship: 3≤V1 / V2≤4.5.

[0018] The second objective of this invention is to provide an air conditioner.

[0019] An air conditioner comprising the aforementioned scroll compressor.

[0020] The air conditioner described above has the same advantages as the scroll compressor mentioned above, which will not be repeated here.

[0021] The third objective of this invention is to provide a vehicle.

[0022] A vehicle comprising the aforementioned scroll compressor or the aforementioned air conditioner.

[0023] The vehicle described above has the same advantages as the aforementioned scroll compressor or air conditioner, which will not be elaborated upon here.

[0024] Additional aspects and advantages of the 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

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a partial structural schematic diagram of the scroll compressor described in an embodiment of the present invention;

[0027] Figure 2 The housing described in some embodiments of the present invention is in Figure 1 Cross-sectional view at point AA;

[0028] Figure 3 The housing described in other embodiments of the present invention is in Figure 1 Cross-sectional view at point AA;

[0029] Figure 4 This is a schematic diagram illustrating the effect of the ratio of the minimum cross-sectional area of ​​the contraction section to the minimum cross-sectional area of ​​the exhaust port on exhaust pressure pulsation and the coefficient of performance (COP) of refrigeration, as described in an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram illustrating the effect of the ratio of the volume of the exhaust chamber to the volume of the oil storage chamber on the exhaust pressure pulsation and the oil discharge rate, as described in an embodiment of the present invention.

[0031] Figure 6 This is a simplified structural diagram of the air conditioner described in an embodiment of the present invention;

[0032] Figure 7 This is a simplified structural diagram of the vehicle described in an embodiment of the present invention.

[0033] Figure label:

[0034] Scroll compressor 100

[0035] Compression component 110, exhaust port 111

[0036] Casing 120, Exhaust chamber 121

[0037] Expansion cavity 1211, first expansion cavity 1, buffer cavity 11, intermediate expansion cavity 2, second expansion cavity 3

[0038] Shrinkage section 1212

[0039] Vent 122, Limiting protrusion 123

[0040] Oil separation chamber 124, oil separator outlet 1241, oil separator vent 1242

[0041] Oil storage chamber 125, oil inlet 1251, oil return channel 126.

[0042] Air conditioner 200, vehicle 300. Detailed Implementation

[0043] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0044] In the description of this invention, it should be understood that the terms "axial," "radial," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0046] The following is for reference. Figures 1-5 A scroll compressor 100 according to an embodiment of the present invention is described.

[0047] Combination Figure 1 and Figure 2According to an embodiment of the present invention, a scroll compressor 100 includes: a compression component 110 and a housing 120. The compression component 110 is provided with an exhaust port 111. The housing 120 is disposed on one side of the compression component 110 and defines an exhaust chamber 121 between the housing 120 and the compression component 110. The exhaust port 111 communicates with the exhaust chamber 121. The housing 120 is also provided with an oil separation chamber 124. The exhaust chamber 121 is provided with an air outlet 122, which is used to connect the oil separation chamber 124 and the exhaust chamber 121.

[0048] For example, the compression component 110 is used to compress the refrigerant in the scroll compressor 100. The compressed refrigerant is discharged from the compression component 110 through the exhaust port 111 and can be further discharged into the exhaust chamber 121 connected to the exhaust port 111. The exhaust chamber 121 is provided with an air outlet 122. The refrigerant entering the exhaust chamber 121 can be discharged from the exhaust chamber 121 into the oil separation chamber 124 through the air outlet 122. During the flow of the refrigerant, some lubricating oil will be carried. The refrigerant and the lubricating oil it carries can be separated into oil and gas in the oil separation chamber 124 to ensure the dryness of the refrigerant output by the scroll compressor 100.

[0049] Combination Figure 2 and Figure 3 The exhaust chamber 121 includes multiple expansion chambers 1211. The multiple expansion chambers 1211 are arranged sequentially in the direction from the exhaust port 111 to the air outlet 122. Each pair of adjacent expansion chambers 1211 are connected by a contraction portion 1212. The exhaust port 111 and the air outlet 122 are respectively connected to the corresponding expansion chambers 1211. The maximum cross-sectional area of ​​the contraction portion 1212 is smaller than the minimum cross-sectional area of ​​the expansion chamber 1211.

[0050] For example, the exhaust chamber 121 may include two expansion chambers 1211, one of which is connected to the exhaust port 111, and the other of which is connected to the air outlet 122. The two expansion chambers 1211 are connected to each other through a contraction section 1212. When the refrigerant passes through the exhaust port 111, it passes through the expansion chamber 1211-contraction section 1212-expansion chamber 1211 in sequence, and can further flow through the air outlet 122.

[0051] The cross-sectional area of ​​the expansion cavity 1211 connected to the exhaust port 111 is larger than that of the exhaust port 111, and the cross-sectional area of ​​the expansion cavity 1211 connected to the air outlet 122 is larger than that of the air outlet 122. This allows the refrigerant to undergo multiple diffusions and contractions as it flows from the exhaust port 111 into the air outlet 122, which helps to reduce the exhaust pressure pulsation of the scroll compressor 100 and thus helps to reduce the noise of the scroll compressor 100.

[0052] It is understood that the above-mentioned exhaust chamber 121 including two expansion chambers 1211 is only an example of this application and should not be construed as a limitation of this application. The number of expansion chambers 1211 can also be three, four, etc. The specific number of expansion chambers 1211 can be determined according to the arrangement space inside the housing 120, and is not specifically limited here.

[0053] In related technologies, during the process of refrigerant flowing from the exhaust port to the outlet, the cross-sectional area of ​​the exhaust chamber remains relatively constant. That is, during the exhaust process of the scroll compressor, only a set of contraction and expansion structures are formed through the exhaust port and the exhaust chamber. This results in limited effect of airflow contraction and diffusion during the flow, thus limiting the effect of reducing the exhaust pressure pulsation of the scroll compressor, which in turn easily leads to high noise in the scroll compressor.

[0054] This invention enables the exhaust chamber 121 to include multiple expansion chambers 1211 arranged sequentially from the exhaust port 111 to the outlet port 122, and connects the expansion chambers 1211 through the contraction section 1212. This allows the refrigerant to undergo multiple contractions and expansions during its flow through the exhaust chamber 121, increasing the number of contractions and expansions during the refrigerant's flow. This improves the effect of reducing exhaust pressure pulsation in the scroll compressor 100, thereby helping to reduce the noise of the scroll compressor 100.

[0055] Through simulation analysis of the scroll compressor 100 of the present invention, compared with the scroll compressor 121 which does not have multiple expansion chambers 1211 and contraction section 1212 in the exhaust chamber, the scroll compressor 100 of the present invention can reduce the first-order pulsation by at least 10%, effectively improving the listening experience of the scroll compressor 100.

[0056] Combination Figure 2 and Figure 3 In some embodiments of the present invention, limiting protrusions 123 are formed on the two opposing cavity walls of the exhaust cavity 121, and the opposing limiting protrusions 123 extend toward each other and are spaced apart to define the contraction portion 1212.

[0057] For example, the exhaust chamber 121 has two chamber walls that extend from the exhaust port 111 toward the air outlet 122 and are disposed opposite to each other. Each of the two opposing chamber walls has a limiting protrusion 123. The limiting protrusion 123 extends from the chamber wall into the exhaust chamber 121, and the limiting protrusions 123 on the two chamber walls are disposed opposite to each other and spaced apart to define a contraction portion 1212 for refrigerant to flow through.

[0058] Therefore, by setting the limiting protrusion 123, a contraction section 1212 with a cross-sectional area smaller than that of the expansion section 1211 can be formed in the exhaust chamber 121. During the flow of the refrigerant in the exhaust chamber 121, it can diffuse and contract multiple times, which is beneficial to improving the effect of reducing the exhaust pressure pulsation of the scroll compressor 100.

[0059] Optionally, the limiting protrusion 123 can be integrally formed with the cavity wall of the exhaust cavity 121 to facilitate the assembly of the scroll compressor 100; the limiting protrusion 123 can also be separately formed from the cavity wall of the exhaust cavity 121 and installed on the cavity wall of the exhaust cavity 121 by means of snap-fit ​​fixing to facilitate the processing and production of the housing 120.

[0060] It is understandable that the arrangement of the limiting protrusion 123 and the cavity wall of the exhaust chamber 121 can be determined according to actual production requirements, and no specific limitation is made here.

[0061] Combination Figure 2 and Figure 3 In some embodiments of the present invention, the plurality of expansion cavities 1211 include a first expansion cavity 1, an intermediate expansion cavity 2 and a second expansion cavity 3, an exhaust port 111 is connected to the first expansion cavity 1, an exhaust hole 122 is connected to the second expansion cavity 3, and the first expansion cavity 1 and the second expansion cavity 3 are both connected to the corresponding intermediate expansion cavity 2 through a contraction portion 1212.

[0062] The first expansion chamber 1 is connected to the intermediate expansion chamber 2 through the contraction section 1212. The intermediate expansion chamber 2 is connected to the second expansion chamber 3 through the contraction section 1212. The refrigerant is discharged into the first expansion chamber 1 from the exhaust port 111. Since the cross-sectional area of ​​the exhaust port 111 is smaller than the minimum cross-sectional area of ​​the first expansion chamber 1, the refrigerant contracts when it passes through the exhaust port 111. When the refrigerant enters the first expansion chamber 1, the refrigerant diffuses. In other words, the exhaust port 111 and the first expansion chamber 1 form a set of contraction and expansion structures to reduce the exhaust pressure pulsation of the scroll compressor 100.

[0063] Furthermore, after the refrigerant is discharged from the first expansion chamber 1, it flows into the intermediate expansion chamber 2 through the contraction section 1212. The maximum cross-sectional area of ​​the contraction section 1212 is smaller than the minimum cross-sectional area of ​​the expansion chamber 1211 (including the first expansion chamber 1, the second expansion chamber 3, and the intermediate expansion chamber 2). The refrigerant contracts as it passes through the contraction section 1212. When the refrigerant enters the intermediate expansion chamber 2, it diffuses. In other words, a contraction and expansion structure is formed between the contraction section 1212 and the intermediate expansion chamber 2 to reduce the exhaust pressure pulsation of the scroll compressor 100.

[0064] Furthermore, after the refrigerant is discharged from the intermediate expansion chamber 2, it passes through the contraction section 1212 connecting the intermediate expansion chamber 2 and the second expansion chamber 3, where the refrigerant contracts. When the refrigerant enters the second expansion chamber 3, it diffuses. In other words, the contraction section 1212 connecting the intermediate expansion chamber 2 and the second expansion chamber 3 forms a contraction-expansion structure with the second expansion chamber 3 to reduce the exhaust pressure pulsation of the scroll compressor 100.

[0065] Therefore, the refrigerant can undergo multiple contractions and expansions during its flow in the exhaust chamber 121, which helps to reduce the exhaust pressure pulsation of the scroll compressor 100.

[0066] Combination Figure 2 and Figure 3 In some embodiments of the present invention, there are multiple intermediate expansion chambers 2. For example, the number of intermediate expansion chambers 2 can be two, three or four. By setting multiple intermediate expansion chambers 2, it is beneficial to increase the number of times the refrigerant contracts and diffuses when flowing in the exhaust chamber 121, thereby further improving the effect of reducing the exhaust pressure pulsation of the scroll compressor 100.

[0067] It is understandable that the number of intermediate expansion cavities 2 can be determined based on the arrangement space within the actual housing 120, and no specific limitation is made here.

[0068] The volumes of the multiple intermediate expansion cavities 2 are different. Considering the processing and forming of the shell 120, in order to reduce the processing difficulty of the shell 120, the volumes of the multiple intermediate expansion cavities 2 can be different. This is beneficial to reduce the processing accuracy of the exhaust cavity 121, thereby reducing the processing difficulty of the shell 120 and improving the production efficiency of the shell 120.

[0069] Combination Figure 2 and Figure 3 In some embodiments of the present invention, the first expansion cavity 1 has the largest volume, that is, the diffusion effect of the refrigerant in the first expansion cavity 1 is the best. When the refrigerant flows into the first expansion cavity 1 from the exhaust port 111, it can diffuse sufficiently, which improves the effect of the contraction and expansion structure formed by the exhaust port 111 and the first expansion cavity 1 on reducing exhaust pressure pulsation. When the refrigerant flows out from the first expansion cavity 1, the contraction part 1212 and the expansion cavity 1211 located on the exhaust side of the first expansion cavity 1 can further reduce exhaust pressure pulsation, which is beneficial to further reduce the exhaust pressure pulsation of the scroll compressor 100, thereby helping to reduce the noise of the scroll compressor 100.

[0070] In other embodiments of the present invention, the volume of the multiple expansion cavities 1211 can be the same, which is beneficial to ensure that the contraction and diffusion effect of the airflow between each group of expansion cavities 1211 and the contraction part 1212 is the same. Of course, it is understood that the specific arrangement of the multiple expansion cavities 1211 can be determined according to actual production requirements, and is not specifically limited here.

[0071] like Figure 4 As shown, in some embodiments of the present invention, the minimum cross-sectional area S1 of the contraction portion 1212 and the minimum cross-sectional area S2 of the exhaust port 111 satisfy the relationship: 0.6≤S1 / S2≤2.5.

[0072] In designing the scroll compressor 100, not only the discharge pressure pulsation of the scroll compressor 100 but also its cooling effect must be considered. Specifically, the ratio of the minimum cross-sectional area of ​​the contraction section 1212 to the minimum cross-sectional area of ​​the discharge port 111 affects the discharge pressure pulsation and COP (Coefficient of Performance) of the scroll compressor 100. By ensuring that the minimum cross-sectional area S1 of the contraction section 1212 and the minimum cross-sectional area S2 of the discharge port 111 satisfy the relationship: 0.6≤S1 / S2≤2.5, the discharge pressure pulsation of the scroll compressor 100 is minimized, while the COP is maximized. This reduces the discharge pressure pulsation and noise of the scroll compressor 100 while maintaining its cooling effect, thus ensuring the performance of the scroll compressor 100.

[0073] Reference Figure 4 In some embodiments of the present invention, the minimum cross-sectional area S1 of the contraction portion 1212 and the minimum cross-sectional area S2 of the exhaust port 111 satisfy the relationship: 0.8 ≤ S1 / S2 ≤ 1.5. When S1 / S2 < 0.8, although the exhaust pressure pulsation of the scroll compressor 100 is small, the coefficient of performance of the scroll compressor 100 is also small, and the performance of the scroll compressor 100 is poor. When S1 / S2 > 1.5, although the coefficient of performance of the scroll compressor 100 is large, the performance of the scroll compressor 100 is also small. The exhaust pressure pulsation of the scroll compressor 100 is also relatively large. Therefore, by ensuring that the ratio of the minimum cross-sectional area S1 of the contraction section 1212 to the minimum cross-sectional area S2 of the exhaust port 111 satisfies the relationship: 0.8≤S1 / S2≤1.5, the scroll compressor 100 has a large coefficient of performance (COP) while the exhaust pressure pulsation is small. This reduces the noise of the scroll compressor 100 and improves its cooling effect, thereby enhancing its performance.

[0074] Combination Figures 1 to 3In some embodiments of the present invention, the maximum cross-sectional area of ​​the vent 122 is smaller than the minimum cross-sectional area of ​​the oil separation chamber 124. That is, a set of contraction and expansion structures are formed between the vent 122 and the oil separation chamber 124, so that the refrigerant can contract and expand when it flows from the vent 122 into the oil separation chamber 124, thereby reducing the exhaust pressure pulsation of the scroll compressor 100.

[0075] Combination Figure 2 and Figure 3 In some embodiments of the present invention, the exhaust port 111 and the first expansion chamber 1 form a set of contraction-expansion structures, the exhaust port 122 and the oil separation chamber 124 form a set of contraction-expansion structures, the intermediate expansion chamber 2 and the contraction portion 1212 located at its intake end form a contraction-expansion structure, and the second expansion chamber 3 and the contraction portion 1212 located at its intake end form a contraction-expansion structure. Considering the arrangement space of the housing 120 and the effect of reducing the exhaust pressure pulsation of the scroll compressor 100, the contraction-expansion structure can be provided in 3-8 sets. When there are fewer than 3 sets of contraction-expansion structures, the effect of reducing the exhaust pressure pulsation of the scroll compressor 100 is poor. When there are more than 8 sets of contraction-expansion structures, the size of the housing 120 needs to be increased, which leads to an increase in the size of the scroll compressor 100.

[0076] Therefore, by setting the shrinkage and expansion structure to 3-8 groups, it is beneficial to ensure the reduction effect of exhaust pressure pulsation of the scroll compressor 100, while not increasing the size of the housing 120, which is beneficial to improve the processing convenience of the housing 120, and does not require increasing the layout space required for the scroll compressor 100.

[0077] Combination Figure 2 and Figure 3 In some embodiments of the present invention, the housing 120 is further provided with an oil storage cavity 125, which is connected to the oil separation cavity 124.

[0078] For example, the oil separation chamber 124 is provided with an oil outlet 1241 on its chamber wall, and the oil storage chamber 125 is provided with an oil inlet 1251 on its chamber wall. The oil outlet 1241 and the oil inlet 1251 are connected by a return oil channel 126. After the refrigerant and the lubricating oil it carries are separated in the oil separation chamber 124, the lubricating oil flows into the return oil channel 126 through the oil outlet 1241, and can further flow into the oil chamber through the oil inlet 1251.

[0079] Combination Figure 2 and Figure 3In some embodiments of the present invention, an oil separator is provided in the oil separation chamber 124. The oil separator can be snapped onto the chamber wall of the oil separation chamber 124 and is used to separate the refrigerant and lubricating oil, which is beneficial to improving the separation effect of the refrigerant and lubricating oil, thereby improving the dryness of the refrigerant discharged by the scroll compressor 100.

[0080] Furthermore, the housing 120 is provided with an oil separator outlet 1242, which is connected to the oil separation chamber 124. After the refrigerant and the lubricating oil it carries are separated in the oil separation chamber 124, the refrigerant can be discharged from the oil separation chamber 124 through the oil separator outlet 1242 to realize the refrigerant output of the scroll compressor 100.

[0081] like Figure 3 As shown, in some embodiments of the present invention, a buffer cavity 11 is formed in the expansion cavity 1211 that communicates with the exhaust port 111 among a plurality of expansion cavities 1211, and at least a portion of the side plate of the housing 120 defining the buffer cavity 11 protrudes from the inner wall of the oil storage cavity 125 in the direction toward the interior of the oil storage cavity 125.

[0082] Specifically, a buffer cavity 11 is formed inside the first expansion cavity 1. At least a portion of the side plate of the housing 120 defining the buffer cavity 11 protrudes toward the interior of the oil storage cavity 125 and protrudes from the inner wall of the oil storage cavity 125. It can also be understood that at least a portion of the side plate shared by the first expansion cavity 1 and the oil storage cavity 125 protrudes into the oil storage cavity 125 so that a buffer cavity 11 can be formed inside the first expansion cavity 1. By setting the buffer cavity 11, the volume of the first expansion cavity 1 can be further increased, and the diffusion effect of the refrigerant in the first expansion cavity 1 can be improved, thereby helping to further improve the effect of reducing the exhaust pressure pulsation of the scroll compressor 100.

[0083] Optionally, the side plate of the housing 120 defining the buffer cavity 11 may be raised towards the interior of the oil storage cavity 125 as a whole, or the portion of the side plate of the housing 120 defining the buffer cavity 11 near the exhaust port 111 may be raised towards the interior of the oil storage cavity 125. The specific area of ​​the side plate of the housing 120 defining the buffer cavity 11 raised towards the interior of the oil storage cavity 125 can be determined according to actual production requirements, and is not specifically limited here.

[0084] In addition, the side plate can be integrally formed with the housing 120 to facilitate the production and assembly of the scroll compressor 100.

[0085] like Figure 3 As shown, in some embodiments of the present invention, at least a portion of the buffer cavity 11 is located above the air outlet 122 in the height direction.

[0086] In other words, the buffer chamber 11 is arranged to bypass the air outlet 122, so as to ensure that while the buffer chamber 11 increases the volume of the first expansion chamber 1, the buffer chamber 11 and the air outlet 122 can avoid each other, preventing the buffer chamber 11 from blocking the air outlet 122 and causing the refrigerant and its carried lubricating oil to be unable to flow into the oil separation chamber 124.

[0087] Optionally, the buffer chamber 11 can be entirely located above the air outlet 122, or the end of the buffer chamber 11 in the height direction can be located above the air outlet 122, as long as the buffer chamber 11 can avoid the air outlet 122. The specific arrangement of the buffer chamber 11 can be determined according to the actual production requirements, and no specific limitation is made here.

[0088] like Figure 5 As shown, in some embodiments of the present invention, the volume V1 of the exhaust chamber 121 and the volume V2 of the oil storage chamber 125 satisfy the relationship: V1 / V2≥2.

[0089] In designing the scroll compressor 100, both the discharge pressure pulsation and the oil discharge rate of the scroll compressor 100 must be considered. The ratio of the volume of the discharge chamber 121 to the volume of the oil storage chamber 125 affects both the discharge pressure pulsation and the oil discharge rate of the scroll compressor 100. By ensuring that the volume V1 of the discharge chamber 121 and the volume V2 of the oil storage chamber 125 satisfy the relationship V1 / V2≥2, the discharge pressure pulsation and noise of the scroll compressor 100 are reduced, while the oil discharge rate of the scroll compressor 100 is also reduced. This helps to reduce the loss of lubricating oil from the scroll compressor 100, thereby reducing the risk of abnormal wear and other problems caused by insufficient lubrication of the scroll compressor 100.

[0090] Reference Figure 5 In some embodiments of the present invention, the volume V1 of the exhaust chamber 121 and the volume V2 of the oil storage chamber 125 satisfy the relationship: 3≤V1 / V2≤4.5. When V1 / V2<3, although the oil discharge rate of the scroll compressor 100 is small, the exhaust pressure pulsation of the scroll compressor 100 is large, resulting in high noise of the scroll compressor 100. When V1 / V2>4.5, although the exhaust pressure pulsation of the scroll compressor 100 is reduced, the oil discharge rate of the scroll compressor 100 increases, resulting in high lubricating oil loss of the scroll compressor 100. By making the volume V1 of the exhaust chamber 121 and the volume V2 of the oil storage chamber 125 satisfy the relationship: 3≤V1 / V2≤4.5, the exhaust pressure pulsation of the scroll compressor 100 is small while the oil discharge rate is also small, which helps to reduce the noise of the scroll compressor 100 and also helps to reduce the lubricating oil loss of the scroll compressor 100.

[0091] Reference Figure 1 In some embodiments of the present invention, the scroll compressor 100 further includes an electronic control component and a drive device. The electronic control component and the drive device are respectively disposed on the side of the compression component 110 away from the housing 120. The electronic control component is connected to the drive device to control the operating state of the drive device. The drive device is connected to the compression component 110 to drive the compression component 110 to rotate, so that the compression component 110 can compress the refrigerant.

[0092] Reference Figure 6 According to an embodiment of the present invention, the air conditioner 200 includes the scroll compressor 100 described above.

[0093] Since the air conditioner 200 is equipped with the aforementioned scroll compressor 100, by making the exhaust chamber 121 include a plurality of expansion chambers 1211 arranged sequentially from the exhaust port 111 to the air outlet 122, and by making the expansion chambers 1211 connected through the contraction section 1212, the refrigerant can undergo multiple contractions and expansions during the flow of the exhaust chamber 121, thereby increasing the number of contractions and expansions during the flow of the refrigerant, thereby improving the effect of reducing the exhaust pressure pulsation of the scroll compressor 100, and thus helping to reduce the noise of the scroll compressor 100.

[0094] like Figure 7 As shown, the air conditioner 200 according to an embodiment of the present invention includes the scroll compressor 100 described above or the air conditioner 200 described above.

[0095] Since the vehicle 300 is equipped with the aforementioned scroll compressor 100, the aforementioned air conditioner 200, by making the exhaust chamber 121 include a plurality of expansion chambers 1211 arranged sequentially in the direction from the exhaust port 111 to the air outlet 122, and the expansion chambers 1211 are connected through the contraction section 1212, the refrigerant can undergo multiple contractions and expansions during the flow of the exhaust chamber 121, increasing the number of contractions and expansions during the flow of the refrigerant, thereby improving the effect of reducing the exhaust pressure pulsation of the scroll compressor 100, and thus helping to reduce the noise of the scroll compressor 100.

[0096] 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 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.

[0097] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A scroll compressor, characterized in that, include: A compression component, wherein the compression component is provided with an exhaust port; The housing is disposed on one side of the compression component and defines an exhaust chamber between the housing and the compression component. The exhaust port communicates with the exhaust chamber. The housing is also provided with an oil separation chamber. The exhaust chamber is provided with an air outlet. The air outlet is used to connect the oil separation chamber and the exhaust chamber. The exhaust chamber includes multiple expansion chambers, which are arranged sequentially in the direction from the exhaust port to the air outlet. Each pair of adjacent expansion chambers are connected by a contraction section. The exhaust port and the air outlet are respectively connected to the corresponding expansion chambers. The maximum cross-sectional area of ​​the contraction section is smaller than the minimum cross-sectional area of ​​the expansion cavity.

2. The scroll compressor according to claim 1, characterized in that, Limiting protrusions are formed on the two opposite walls of the exhaust chamber. The opposing limiting protrusions extend toward each other and are spaced apart to define the contraction portion.

3. The scroll compressor according to claim 1, characterized in that, The plurality of expansion chambers include a first expansion chamber, an intermediate expansion chamber, and a second expansion chamber. The exhaust port is connected to the first expansion chamber, and the air outlet is connected to the second expansion chamber. Both the first expansion chamber and the second expansion chamber are connected to the corresponding intermediate expansion chamber through the contraction portion.

4. The scroll compressor according to claim 3, characterized in that, There are multiple intermediate expansion cavities, and the volumes of the multiple intermediate expansion cavities are different.

5. The scroll compressor according to claim 3, characterized in that, The first expansion cavity has the largest volume.

6. The scroll compressor according to claim 1, characterized in that, The minimum cross-sectional area S1 of the contraction section and the minimum cross-sectional area S2 of the exhaust port satisfy the following relationship: 0.6≤S1 / S2≤2.

5.

7. The scroll compressor according to claim 6, characterized in that, The minimum cross-sectional area S1 of the contraction section and the minimum cross-sectional area S2 of the exhaust port satisfy the following relationship: 0.8≤S1 / S2≤1.

5.

8. The scroll compressor according to any one of claims 1-7, characterized in that, The maximum cross-sectional area of ​​the vent is smaller than the minimum cross-sectional area of ​​the oil separation chamber.

9. The scroll compressor according to claim 8, characterized in that, The housing also forms an oil storage cavity, which is connected to the oil separation cavity. A buffer cavity is formed in the expansion cavity that is connected to the exhaust port among the plurality of expansion cavities. At least a portion of the side plate defining the buffer cavity of the housing protrudes from the inner wall of the oil storage cavity in a direction toward the interior of the oil storage cavity.

10. The scroll compressor according to claim 9, characterized in that, In the vertical direction, at least a portion of the buffer cavity is located above the air outlet.

11. The scroll compressor according to claim 9, characterized in that, The volume V1 of the exhaust chamber and the volume V2 of the oil storage chamber satisfy the following relationship: V1 / V2≥2.

12. The scroll compressor according to claim 11, characterized in that, The volume V1 of the exhaust chamber and the volume V2 of the oil storage chamber satisfy the following relationship: 3≤V1 / V2≤4.

5.

13. An air conditioner, characterized in that, The air conditioner includes a scroll compressor according to any one of claims 1-12.

14. A vehicle, characterized in that, The vehicle includes a scroll compressor according to any one of claims 1-12 or an air conditioner according to claim 13.

Images