Compressor, air conditioning system and vehicle

Abstract

The invention discloses a compressor, an air conditioning system and a vehicle, and aims to solve the problems of low oil-gas separation efficiency and difficulty in oil return under horizontal layout in the prior art. The compressor comprises a shell and a compression part, wherein an exhaust channel communicated with an exhaust cavity of the compression part is arranged in the shell; a porous coalescence element is arranged in the exhaust channel, and an oil discharge outlet is formed in the bottom of the element; an inclined oil discharge flow channel is further arranged in the shell, and an inlet of the flow channel is communicated with the oil discharge outlet in an aligned mode. During working, an oil-gas mixture penetrates through the porous coalescence element through the exhaust channel, gas is separated and then discharged along the exhaust channel, and intercepted and coalesced oil enters the special inclined oil discharge flow channel through the oil discharge outlet and smoothly returns to an oil pool under the action of gravity. By introducing the gas-liquid branching structure, efficient separation and reliable oil return are achieved, meanwhile, the exhaust resistance is reduced, the structure is compact, the applicability is wide, and the performance and reliability of the compressor can be remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to a compressor, an air conditioning system, and a vehicle. Background Technology

[0002] In the field of refrigeration compressor technology, especially in automotive horizontal compressors, lubricating oil inevitably mixes with the compressed high-pressure refrigerant gas, forming an oil-gas mixture. To ensure the lubrication performance of the compressor and the heat exchange efficiency of downstream heat exchangers (such as condensers and evaporators), the lubricating oil must be separated from the oil-gas mixture as much as possible before the gas is discharged from the compressor, and returned to the oil sump at the bottom of the compressor.

[0003] Currently, oil-gas separation technology solutions face the following technical challenges. First, traditional separation structures are inefficient. Some compressors employ simple methods like centrifugal separation or baffle plate impact separation, which are insufficient to effectively separate tiny oil droplets entrained in high-speed airflow, resulting in excessively high oil content at the compressor outlet. This high oil content leads to poor compressor lubrication, reducing its reliability, and also contaminates the refrigeration system, lowering overall performance. Second, for dual-cylinder or multi-cylinder compressors, a common practice is to combine the oil-gas mixture from each cylinder into a common exhaust or silencer chamber before performing unified oil-gas separation. This "combination first, separation later" approach results in a large total gas volume, high flow velocity, and complex pressure pulsations entering the separation unit, exceeding the optimal operating range of individual separation devices and exacerbating the separation efficiency problem. To handle such a large gas flow, the flow area of ​​the separation unit cannot be too small, which contradicts the principle of needing a pressure drop for separation, leading to increased exhaust resistance, reduced compressor volumetric efficiency, and increased power consumption. Furthermore, in horizontal compressors, the compression mechanism is arranged laterally, with the oil sump located at the bottom. If the oil-gas separator is located in the upper space of the compressor, the separated oil droplets must overcome the sweeping and interference of the rising high-speed airflow under the action of gravity in order to return smoothly to the oil sump at the bottom. However, the traditional oil discharge channel design is relatively simple, which often leads to the separated oil being "re-atomized" by the airflow or remaining in the channel, making it impossible to return the oil effectively and reducing the separation effect.

[0004] Therefore, there is an urgent need in this field for a novel oil-gas separation technology that is compact, has high separation efficiency, low exhaust resistance, and can ensure reliable oil return in a horizontal layout.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a compressor to overcome the problems of low oil-gas separation efficiency in the prior art, especially in horizontal compressors, where the oil after oil-gas separation is difficult to return reliably, resulting in high oil output rate, poor lubrication, and high exhaust resistance. The invention aims to improve oil-gas separation efficiency, reduce compressor oil output rate, reduce exhaust resistance, and solve the problem of reliable oil return in horizontal layout, thereby improving the performance and reliability of the compressor.

[0007] This invention provides a compressor, including: a housing and a compression section housed within the housing, the housing being provided with an exhaust passage, the exhaust passage communicating with the exhaust chamber of the compression section and the exhaust port of the compressor;

[0008] A porous coalescing element is installed inside the exhaust passage, and an oil outlet is provided at the bottom of the porous coalescing element;

[0009] The porous coalescing element forms a porous blocking surface in the exhaust direction of the exhaust channel, and the porous blocking surface is inclined relative to the exhaust direction.

[0010] The casing is also provided with an oil drain channel, which is aligned and connected to the oil drain outlet.

[0011] In some alternative embodiments, the porous coalescing element includes a cylinder and a porous blocking surface connected to the bottom of the cylinder, the cylinder being inserted into an exhaust channel.

[0012] In some alternative embodiments, the porous barrier surface is a filter screen, and the oil outlet is a notch located at the lowest point of the porous barrier surface.

[0013] In some alternative embodiments, the porous blocking surface is inclined in a direction away from the exhaust direction, and the inclined surface forms an angle with the axis of the exhaust passage, the angle being 30° to 45°.

[0014] In some alternative embodiments, the oil drain channel is inclined in a direction away from the exhaust direction, and the axis of the oil drain channel forms an angle with the axis of the exhaust channel, the angle being 30° to 45°.

[0015] In some optional embodiments, the compressor further includes a partition, the housing includes a high-pressure housing and a low-pressure housing, the partition is located between the high-pressure housing and the low-pressure housing, the partition and the high-pressure housing enclose a high-pressure cavity, the partition and the low-pressure housing enclose a low-pressure cavity, the low-pressure cavity contains a motor, the high-pressure cavity contains a compression section, the exhaust cavity is disposed between the compression section and the partition, the partition is provided with a connecting hole, and the exhaust passage and the exhaust cavity are connected through the connecting hole.

[0016] In some alternative embodiments, the compressor further includes an intermediate plate that divides the compression section into an upper compression section and a lower compression section, with an exhaust chamber disposed between the upper compression section and the intermediate plate.

[0017] In some alternative embodiments, the compressor further includes an oil separator structure fixed to one end of the compression section away from the partition, with the oil separator inlet connected to the exhaust port of the compression section.

[0018] In some alternative embodiments, the compressor further includes:

[0019] The lower muffler is connected to the exhaust port of the compressor section;

[0020] The oil separator inlet of the oil separator structure is connected to the exhaust port of the lower muffler.

[0021] In some optional embodiments, the cavity between the housing and the compression section is a lower exhaust cavity, and an opening is formed on the side of the housing facing the inner cavity, the opening connecting the exhaust port or exhaust channel to the lower exhaust cavity.

[0022] This invention also provides an air conditioning system, including the compressor described above.

[0023] Another embodiment of the present invention provides a vehicle including the above-described air conditioning system.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention.

[0025] The compressor, air conditioning system, and vehicle of the present invention have the following beneficial effects:

[0026] The compressor provided by this invention achieves highly efficient oil-gas separation by incorporating an exhaust channel, a porous coalescing element, and an inclined oil discharge channel within the housing. The porous coalescing element effectively intercepts oil droplets, especially tiny oil mists, significantly improving oil-gas separation efficiency. The inclined oil discharge channel, aligned with the oil discharge outlet, provides a dedicated return path for the separated oil, unaffected by airflow, ensuring reliable oil return and solving the problem of difficult oil return in horizontal layouts. This compact design allows for integration into the compressor housing without occupying additional space, reducing exhaust resistance, improving compressor performance and reliability, and extending service life. Attached Figure Description

[0027] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of the structure of a compressor according to an embodiment of the present invention;

[0029] Figure 2 This is a partially enlarged schematic diagram of a compressor according to an embodiment of the present invention;

[0030] Figure 3This is a schematic diagram of the structure of a porous coalescing element according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram showing the inclination angle of the bottom bevel of a porous coalescing element according to an embodiment of the present invention;

[0032] Figure 5 This is a structural schematic diagram of the tilt angle of an inclined oil discharge channel according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the compressor intake and exhaust circuit according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the compressor intake and exhaust circuit according to another embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the inner structure of the lower muffler according to an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the outer structure of the lower muffler according to an embodiment of the present invention.

[0037] Among them, 100-compressor; 110-casing; 120-compression section; 121-upper compression section; 122-lower compression section; 130-exhaust chamber; 131-lower exhaust chamber; 140-exhaust port; 141-opening; 150-exhaust passage; 160-porous coalescing element; 161-bottom; 162-oil outlet; 170-oil flow channel; 180-partition plate; 181-connecting hole; 123-intermediate plate; 190-lower silencer; 200-oil sump; 210-oil separator structure. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The words “or” and “or” in the specification may mean “and” or “or”. Although the terms “upper,” “lower,” “between,” etc., may be used in this specification to describe different exemplary features and elements of this application, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this application. Although “first” or “second,” etc., are used in this specification to denote certain features, they are merely indicative of function and not as a limitation on the number or importance of specific features.

[0039] During the operation of a refrigeration compressor, the mixing of lubricating oil and refrigerant gas to form an oil-gas mixture is an unavoidable phenomenon. To ensure reliable lubrication of the compressor and maintain the efficient operation of the refrigeration system, it is necessary to effectively separate the lubricating oil from the high-pressure gas. Based on this, this invention utilizes the basic principle of gas-liquid separation. By setting up a porous coalescing element, a porous obstruction surface is formed in the exhaust direction of the exhaust channel. This causes tiny oil droplets in the oil-gas mixture to collide and aggregate as they pass through the porous medium, forming larger oil droplets. The porous obstruction surface is tilted relative to the exhaust direction, increasing the obstruction area while reducing the resistance during the oil droplet's fall. This allows the oil droplets to separate more quickly from the gas under gravity and fall off. If the separated oil can flow smoothly back to the oil sump at the bottom of the compressor, secondary atomization can be avoided, thus ensuring the oil-gas separation effect. Therefore, this invention employs porous coalescing elements and utilizes inclined porous blocking surfaces to separate the oil-gas mixture, guiding the oil to flow back quickly under gravity, avoiding interference from high-speed airflow, thereby improving oil-gas separation efficiency, reducing compressor oil output, ensuring compressor self-lubrication, extending service life, improving refrigeration system heat exchange efficiency, and enhancing overall machine performance.

[0040] like Figures 1 to 3As shown, an embodiment of the present invention provides a compressor 100, including a housing 110 and a compression section 120 housed within the housing 110. The housing 110 is provided with an exhaust passage 150, optionally located within the side wall of the housing 110 along the axial direction. The exhaust passage 150 communicates with the exhaust chamber 130 of the compression section 120 and the exhaust port 140 of the compressor 100. A porous coalescing element 160 is provided within the exhaust passage 150, and an oil outlet 162 is provided at the bottom 161 of the porous coalescing element 160. The porous coalescing element 160 forms a porous blocking surface 161 against the exhaust in the exhaust direction of the exhaust passage, and the porous blocking surface 161 is inclined relative to the exhaust direction. Preferably, the porous blocking surface 161 is inclined in a direction away from the exhaust direction. The housing 110 is also provided with an oil discharge channel 170, which is aligned and communicates with the oil outlet 162. The housing 110 serves as the outer structure of the compressor 100, protecting the internal compression components and forming a sealed space to maintain pressure during compression. The compression section 120 of the compressor 100 compresses the refrigerant gas, increasing its pressure and temperature to power the refrigeration cycle. The exhaust passage 150, located inside the housing 110, guides the high-pressure oil-gas mixture from the compression section 120 and out of the compressor 100. It connects the exhaust chamber 130 of the compression section 120 and the exhaust port 140 of the compressor 100, ensuring smooth gas discharge. The exhaust chamber 130, located near the exhaust outlet of the compression section 120, buffers and collects the high-pressure oil-gas mixture discharged from the compression section 120. A porous coalescing element 160 is disposed inside the exhaust passage 150. The oil-gas mixture is dispersed and separated by the porous medium, allowing the separated gas to pass through the holes and discharge. It also intercepts oil droplets in the oil-gas mixture discharged from the compression section 120, causing them to coalesce into larger droplets for oil-liquid separation. The oil outlet 162, located at the bottom of the porous coalescing element 160, is used to discharge coalesced oil droplets from the porous coalescing element 160 and guide them to the oil return passage of the compressor 100. The oil drain channel 170 is an independent oil return passage, located in the housing 110 and separate from the main exhaust passage 150. Optionally, the oil drain channel 170 is inclined, with its inclination direction consistent with the porous blocking surface 161. Its inclined design utilizes gravity to ensure that the oil can flow smoothly back to the oil sump at the bottom of the compressor 100. The inclined oil drain channel 170 and oil outlet 162 can be more smoothly aligned and connected, ensuring that the oil discharged from the porous coalescing element 160 can accurately enter the oil drain channel 170, preventing high-speed airflow from re-atomizing or stagnating. In this embodiment, by setting a porous coalescing element 160 in the exhaust channel 150, oil droplets in the oil-gas mixture can be effectively intercepted, thereby improving the oil-gas separation efficiency. By setting an oil discharge channel 170 and aligning it with the oil discharge outlet 162, the separated oil can be reliably returned, thus solving the problem of difficult oil return in the horizontal compressor 100.The porous coalescing element 160 can be made of materials such as, but not limited to, metal wire mesh, metal foam, and fiber felt. Its porosity and pore size can be adjusted according to actual working conditions to achieve the best coalescing effect. For example, the metal wire mesh can be stainless steel wire mesh, copper wire mesh, or aluminum wire mesh, and its weaving method can be plain weave, twill weave, or satin weave. The shape of the porous coalescing element 160 can be cylindrical, conical, flat, or other shapes suitable for the structure of the exhaust channel 150. The shape and size of the oil outlet 162 can be adjusted according to the oil flow rate and flow channel structure; for example, it can be circular, square, elliptical, or elongated notch. The cross-sectional shape of the oil discharge channel 170 can be circular, square, elliptical, or other shapes suitable for oil flow. The inner wall of the channel can be polished to reduce flow resistance. In summary, this embodiment of the invention achieves efficient oil-gas separation through the porous coalescing element 160 and reliable oil return through the aligned connection between the oil discharge channel 170 and the oil discharge outlet 162, solving the problems of low oil-gas separation efficiency and difficulty in horizontal oil return in the prior art. This structure is compact, easily integrated into the compressor housing 110, and has minimal impact on the overall structure of the compressor 100. It effectively improves the performance and reliability of the compressor 100, reduces oil output, decreases exhaust resistance, and enhances overall machine energy efficiency.

[0041] In some embodiments, the porous coalescing element 160 includes a cylindrical body and a porous blocking surface 161 connected to the bottom of the cylindrical body. The cylindrical body is inserted into the exhaust channel 150, such that the porous blocking surface 161 is inclined in a direction away from the exhaust direction. The porous coalescing element 160 is a filter screen; both the cylindrical body and the porous blocking surface 161 can be filters, or only the porous blocking surface 161 can be a filter screen. This filter screen is disposed in the exhaust channel 150, and its outer peripheral surface is in close contact with the inner peripheral surface of the exhaust channel 150. Its main function is to intercept oil droplets in the oil-gas mixture entering the exhaust channel 150 from the exhaust chamber 130, causing the oil droplets to coalesce and separate from the gas flow. It is a key component for achieving efficient oil-gas separation. The filter screen is preferably made of woven or wound metal wire, such as stainless steel wire, copper wire, or alloy wire. These materials have good corrosion resistance and high-temperature strength, and can adapt to the harsh environment inside the compressor 100, ensuring long-term stable operation. Furthermore, the porosity and filament diameter of the filter screen can be optimized by adjusting the weaving or winding process to improve the interception and coalescence of oil droplets while ensuring ventilation capacity. The shape of the filter screen can be adjusted according to the structure of the exhaust channel 150, such as cylindrical, conical, or flat, to fully utilize the space of the exhaust channel 150 and improve separation efficiency. As an alternative embodiment, the porous coalescing element 160 can also be made of porous ceramic, sintered metal, or polymer materials, as long as it has sufficient specific surface area and suitable pore structure to achieve effective interception and coalescence of oil droplets. The use of this filter screen can significantly improve oil-gas separation efficiency, reduce the oil content at the compressor 100 outlet, reduce exhaust resistance, and improve the performance and reliability of the compressor 100.

[0042] In some embodiments, the oil outlet 162 is a notch located at the lowest point of the porous blocking surface 161. This embodiment aims to achieve effective collection and discharge of oil, using gravity to guide the coalesced oil droplets to a predetermined oil discharge position, ensuring that the oil can smoothly enter the oil discharge channel 170, and preventing the oil from stagnating or being re-atomized by the airflow.

[0043] The inclined design of the porous blocking surface 161 ensures that the compressed refrigerant impacts the surface when discharged, separating the oil-gas mixture. Gas exits through the holes, while oil droplets, under gravity, naturally slide down the slope to the lowest point, the oil outlet 162. The inclined surface increases the refrigerant impact area, improving oil-gas separation. The oil outlet 162, as the notch at the lowest point of the inclined surface, provides a concentrated discharge channel for the oil, preventing it from dispersing or stagnating at the bottom of the porous blocking surface 161.

[0044] Furthermore, the porous blocking surface 161 can be made of various materials, such as stainless steel, aluminum alloy, engineering plastics, etc., as long as its surface has good wettability and corrosion resistance. The surface of the bevel can also undergo special treatments, such as polishing or spraying with Teflon coating, to further reduce the surface tension of the oil and improve its fluidity. The shape of the oil outlet 162 can also be adjusted according to actual needs, such as circular, square, elliptical, etc., as long as its size can ensure smooth oil discharge. The notch can be a regular geometric shape or an irregular shape, such as a serrated notch, to further optimize the oil collection effect.

[0045] The above design effectively collects the coalesced oil droplets at the oil outlet 162 and allows them to be smoothly discharged using gravity, preventing oil stagnation or interference from high-speed airflow, thereby improving the efficiency and reliability of oil-gas separation. Furthermore, this structure is simple and compact, easy to manufacture and install, and suitable for various types of compressors 100.

[0046] In some embodiments, such as Figure 4 As shown, the porous blocking surface 161 forms an angle with the axis 150' of the exhaust channel, with the angle ranging from 30° to 45°. Specifically, this inclined surface design, especially in conjunction with a specific angle range, is key to achieving efficient and reliable oil discharge. If the angle is too small, the gravitational force is insufficient, and the oil is prone to stagnation on the filter screen surface, leading to secondary atomization or poor oil return; if the angle is too large, it will increase the radial dimension of the filter screen, which is detrimental to the overall compact design of the compressor 100 and may reduce the structural strength of the filter screen. Therefore, an inclination angle of 30° to 45° achieves the optimal balance between oil discharge efficiency, structural compactness, and reliability.

[0047] The porous baffle surface 161, designed with the aforementioned angle range, ensures that oil droplets can quickly and smoothly slide down to the oil outlet 162 under gravity, effectively preventing oil droplets from accumulating on the porous baffle surface 161 and thus avoiding the possibility of being re-entrained by the high-speed airflow, ensuring the separation effect. At the same time, while ensuring the oil discharge effect, this angle range also minimizes the overall size of the separation structure, which is beneficial for the compact design of the compressor 100.

[0048] Furthermore, such as Figure 5 As shown, in this embodiment, the axis 170' of the oil drain channel 170 forms an angle with the axis 150' of the exhaust channel 150. Specifically, this angle refers to the angle between the axis 170' of the oil drain channel 170 and the axis 150' of the exhaust channel 150. This angle is preferably between 30° and 45°. This angle range ensures the smooth flow of oil under gravity and prevents oil from stagnating in the channel.

[0049] The cross-sectional shape of the oil drain channel 170 can be designed according to actual needs, such as circular, elliptical, rectangular, or polygonal. Preferably, the cross-section of the oil drain channel 170 is circular or elliptical to reduce the resistance to oil flow. The inner wall of the channel can be polished to further reduce the adhesion of the oil and promote smooth oil flow. The material constituting the oil drain channel 170 is compatible with the material of the compressor housing 110 and has good corrosion resistance. To improve oil return efficiency, the inner surface of the oil drain channel 170 can also be coated with an oleophobic coating, such as a polytetrafluoroethylene (PTFE) coating, to further reduce the surface tension of the oil and make it easier for it to slide off.

[0050] By rationally setting the inclination angle and cross-sectional shape of the oil discharge channel 170, it can be ensured that the oil flows back quickly and stably to the oil sump 200 at the bottom of the compressor 100 under the action of gravity, avoiding oil retention and secondary atomization in the channel, and significantly improving the efficiency and reliability of oil-gas separation. In some embodiments, such as Figure 6 As shown, the compressor 100 also includes a partition 180, an exhaust chamber 130 is disposed between the compression section 120 and the partition 180, the partition 180 is provided with a connecting hole 181, and the exhaust passage 150 is connected to the exhaust chamber 130 through the connecting hole 181. Optionally, the connecting hole 181 is an oblique hole. The housing 110 includes a high-pressure housing and a low-pressure housing, the partition 180 is located between the high-pressure housing and the low-pressure housing, and is used to separate the compressor 100, such that the partition 180 and the high-pressure housing enclose a high-pressure chamber, and the partition 180 and the low-pressure housing enclose a low-pressure chamber. The compression section 120 is disposed in the high-pressure chamber, the exhaust passage 150 is disposed in the high-pressure housing on one side of the high-pressure chamber, and the motor is disposed in the low-pressure chamber. The partition 180 is also provided with an intake passage, and the low-pressure housing is provided with an air inlet, so that the compression section 120 draws in gas when it is working. Figure 6 The green arrows indicate the gas path of the intake channel, the red arrows indicate the exhaust path of the compression section 120, and the yellow arrows indicate the exhaust path of the exhaust channel 150. The gas mixture discharged from the compression section 120 enters the exhaust channel 150 through the exhaust chamber 130 and the connecting hole 181. After oil-gas separation by the porous coalescing element 160, the gas part is discharged through the exhaust port 140, and the liquid part flows back to the oil sump 200 located at the bottom of the compressor 100 through the oil drain channel 170. The purple arrows indicate the return path of the oil after oil-gas separation.

[0051] The connection orifice 181 can alter the airflow direction, increase airflow turbulence, and help reduce exhaust noise and improve oil separation efficiency. The shape of the connection orifice 181 is not limited to a circle; it can also be elliptical, rectangular, or other shapes capable of deflecting airflow. There can be one or more connection orifices 181, which can be arranged side-by-side or staggered to increase the flow area and separation effect.

[0052] In some embodiments, such as Figure 6 As shown, the housing 110 has an opening 141 on the side facing the inner cavity. The opening 141 connects the exhaust port 140 or the exhaust passage 150 with the lower exhaust chamber 131. The lower exhaust chamber 131 is a cavity between the housing 110 and the compression section 120. The opening 141 allows some of the compressed refrigerant to enter the lower exhaust chamber 131, providing a certain back pressure for the sliding vane of the compression section 120 to slide in the piston direction.

[0053] See also Figure 6 As shown, this embodiment describes the specific structure and exhaust path of a horizontal twin-cylinder compressor 100, which aims to improve compression efficiency and reduce vibration and noise. The compressor 100 includes a housing 110 and a compression section 120 housed within the housing 110. The compression section 120 is divided into an upper compression section 121 and a lower compression section 122 by an intermediate plate 123. Compared to a single-cylinder structure, this twin-cylinder structure can provide a larger exhaust volume within the same volume, thereby improving the compression efficiency of the compressor 100. Simultaneously, the symmetrically arranged upper compression section 121 and lower compression section 122 can effectively balance the inertial forces generated by reciprocating motion, reducing the vibration and noise of the compressor 100. An exhaust chamber 130 is disposed between the upper compression section 121 and the partition plate 180. Figure 8 , 9 As shown, in this embodiment, the compressor 100 further includes: a lower silencer 190, communicating with the exhaust port of the lower compression section 122; and a refrigerant flow hole 192, communicating with the lower silencer 190 and the exhaust chamber 130. The oil-gas mixture discharged from the upper compression section 121 enters the exhaust passage 150 through the exhaust chamber 130 and the connecting hole 181, and after oil-gas separation by the porous coalescing element 160, the gas portion is discharged through the exhaust port 140, and the liquid portion flows back to the oil sump 200 located at the bottom of the compressor 100 through the oil drain channel 170. Figure 6The blue arrows indicate the exhaust path of the lower compressor section 122. The gas discharged from the lower compressor section 122 first enters the lower silencer 190, and after flowing out of the lower silencer 190, it is guided into the refrigerant flow hole. This refrigerant flow hole penetrates the compressor section 120, for example, part of the intermediate plate 123 structure. Finally, the mixed gas flows out from the refrigerant flow hole and enters the exhaust chamber 130 of the upper compressor section 121, merging with the gas discharged from the upper compressor section 121. The oil-gas mixture discharged from the upper compressor section 121 and the lower compressor section 122 enters the exhaust passage 150 through the exhaust chamber 130 and the connecting hole 181. After oil-gas separation by the porous coalescing element 160, the gas portion is discharged through the exhaust port 140, and the liquid portion flows back to the oil sump 200 located at the bottom of the compressor 100 through the oil drain channel 170. The purple arrows indicate the oil return path after oil-gas separation.

[0054] The present invention also provides an embodiment, such as Figure 7 The horizontal twin-cylinder compressor 100 shown is... Figure 6 The difference in the embodiment shown is that the compressor 100 includes an oil separator structure 210, the oil separator inlet of which is connected to the exhaust port of the lower compression section 122.

[0055] Optionally, the oil separator structure 210 has an oil separator chamber, an oil separator tube, an oil separator air inlet, and an oil return hole. The oil separator air inlet is connected to the exhaust port of the lower compression section 122. Specifically, the exhaust port of the lower compression section 122 is connected to the lower muffler 190, and the lower muffler 190 is connected to the oil separator air inlet. The oil return hole is connected to the oil sump. The oil separator tube is connected to the oil separator chamber and the gas outlet, respectively. The gas outlet is connected to the lower exhaust chamber 131.

[0056] like Figure 7 The green arrows indicate the gas path in the intake channel, the red arrows indicate the exhaust path in the upper compression section 121, and the blue arrows indicate the exhaust path in the lower compression section 122. The gas mixture discharged from the upper compression section 121 enters the exhaust channel 150 through the exhaust chamber 130 and the connecting hole 181. After oil-gas separation by the porous coalescing element 160, the gas portion is discharged through the exhaust port 140, and the liquid portion flows back to the oil sump 200 located at the bottom of the compressor 100 through the oil drain channel 170. The brown arrows indicate the return path of the oil after oil-gas separation. The gas discharged from the lower compression section 122 first enters the lower silencer 190, and then flows out from the lower silencer 190 to the oil separator structure 210. The oil-gas mixture enters the oil separator chamber of the oil separator structure 210, spirally separates around the oil separator tube, and the separated gas is discharged from the gas outlet to the lower exhaust chamber 131. The gas in the lower exhaust chamber 131 is discharged through the compressor outlet 140. Figure 7As indicated by the blue arrow. The separated oil flows back to the oil sump 200 located at the bottom of the compressor 100 through the oil return hole, as shown. Figure 7 As indicated by the brown arrow in the middle.

[0057] This embodiment provides an air conditioning system employing the compressor 100 of any of the aforementioned embodiments, thereby exhibiting superior performance and reliability at the system level. This air conditioning system can be a vehicle air conditioning system, or a residential or commercial air conditioning system. In this embodiment, a vehicle air conditioning system is used as an example. The air conditioning system includes a refrigerant circulation loop, on which the following components are connected in sequence: the compressor 100 of this invention, a condenser, a receiver, an expansion valve, and an evaporator. The compressor 100, as the power core of the system, has had its detailed structure fully described in the above embodiments. Whether using the single-cylinder compressor 100 of the above embodiments or the dual-rotor compressor 100, it integrates an innovative "gas-liquid separation" oil-gas separation structure. During the operation of the air conditioning system, the compressor 100 draws in low-temperature, low-pressure gaseous refrigerant from the evaporator and compresses it into a high-temperature, high-pressure oil-gas mixture. Thanks to the efficient internal oil-gas separation structure of this invention, most of the lubricating oil is effectively separated and returned to the oil sump before the gas leaves the compressor 100. Therefore, what enters the condenser is a high-purity, high-temperature, high-pressure gaseous refrigerant. Because the refrigerant has an extremely low oil content, an oil film will not form on the inner wall of the condenser, thus avoiding the oil film's obstruction of heat transfer. This allows the condenser to condense the refrigerant into a medium-temperature, high-pressure liquid refrigerant with maximum efficiency. This directly improves the overall system's cooling efficiency. Subsequently, the liquid refrigerant flows through a receiver-drier to filter impurities and absorb moisture. Then, the medium-temperature, high-pressure liquid refrigerant is throttled and depressurized through an expansion valve, becoming a low-temperature, low-pressure liquid mist refrigerant. Finally, the low-temperature, low-pressure liquid mist refrigerant enters the evaporator inside the vehicle, absorbing heat from the interior air and evaporating, thereby cooling the interior air. Simultaneously, the vehicle's blower blows the cooled air into the cabin, achieving a cooling effect. The evaporated low-temperature, low-pressure gaseous refrigerant is then drawn back into the compressor, completing the entire refrigeration cycle.

[0058] By integrating the high-efficiency compressor 100 of this invention into the air conditioning system 200, the overall system performance is significantly improved. Firstly, due to the compressor 100's extremely low oil output, the lubricating oil content in the entire refrigerant circulation loop is precisely controlled, preventing oil accumulation in the condenser and evaporator. This ensures the heat exchanger is always in optimal working condition, improving the system's coefficient of performance (COP) and cooling capacity. Secondly, the compressor 100 itself, due to guaranteed lubrication, exhibits higher operational reliability and a longer service life, thereby enhancing the durability and stability of the entire air conditioning system. For automobiles, especially electric vehicles, higher air conditioning system efficiency means lower energy consumption, helping to extend the vehicle's driving range.

[0059] This embodiment provides a vehicle whose core innovation lies in its integration of an advanced thermal management system including the compressor 100 of this invention, thereby achieving superior energy efficiency, comfort, and reliability at the vehicle level. This vehicle can be a traditional gasoline-powered vehicle, a hybrid vehicle, or a pure electric vehicle. Given the high energy efficiency of the compressor of this invention, its advantages are particularly prominent when applied to new energy vehicles, which are extremely sensitive to energy consumption.

[0060] The vehicle includes a vehicle body and a thermal management system. This thermal management system includes at least the aforementioned air conditioning system, the core component of which is the compressor 100. In practical applications, this air conditioning system is integrated and installed in the front compartment of the vehicle body or other suitable location. The driving method of the compressor 100 depends on the vehicle type. For traditional gasoline vehicles, the compressor 100 is driven by the engine belt pulley system; for new energy vehicles, the compressor 100 is driven by an independent motor powered by the onboard high-voltage battery system.

[0061] Because the compressor 100 integrates an innovative "gas-liquid separation" oil-gas separation structure, it maintains an extremely low outlet oil content and efficient, stable operation under various vehicle driving conditions (such as idling, acceleration, high-speed cruising, and severe bumps). This brings numerous benefits to the entire vehicle:

[0062] Enhanced driving and passenger comfort. The air conditioning system utilizes a high-efficiency compressor (100), resulting in faster cooling and more precise temperature control. Whether after being exposed to the scorching sun on a hot summer day or when defogging is needed in humid weather, the system responds quickly, providing a comfortable in-car environment for passengers.

[0063] Optimize vehicle energy consumption management. For pure electric vehicles, the air conditioning system is the largest energy consumer besides the drive system. The improved COP (Coefficient of Performance) of the air conditioning system brought about by the compressor 100 of this invention means that less electrical energy is consumed to achieve the same cooling effect. This directly translates to savings in battery power, helping to extend the actual driving range of the vehicle and alleviate users' "range anxiety".

[0064] Enhancing overall vehicle reliability and durability. The high reliability of the compressor 100 itself reduces the risk of failure, lowering vehicle maintenance costs and time. Simultaneously, a stable and efficient air conditioning system avoids frequent repairs due to performance degradation, increasing user satisfaction and trust in the overall vehicle quality.

[0065] Flexible system integration and layout. The compressor 100 of this invention has a compact structure, providing greater flexibility for the overall vehicle engineering layout. Engineers can use the saved space to optimize other systems or design a more compact front compartment layout.

[0066] In summary, the vehicle in this embodiment, by equipping an air conditioning system that integrates the core technology of this invention, does not simply add a component, but achieves a systematic improvement in performance, energy efficiency, and user experience at the vehicle level, which is in particular in line with the core development needs of modern automobiles, especially new energy vehicles, for high efficiency, energy saving, and reliability.

[0067] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A compressor, comprising: A housing and a compression unit housed within the housing, characterized in that the housing is provided with an exhaust passage, the exhaust passage being connected to the exhaust chamber of the compression unit and the exhaust port of the compressor; The exhaust channel is provided with a porous coalescing element, and the bottom of the porous coalescing element is provided with an oil outlet. The porous coalescing element forms a porous blocking surface against the exhaust in the exhaust direction of the exhaust channel, and the porous blocking surface is inclined relative to the exhaust direction. The housing is also provided with an oil drain channel, which is aligned and connected to the oil drain outlet.

2. The compressor according to claim 1, characterized in that, The porous coalescing element includes a cylindrical body and a porous blocking surface connected to the bottom of the cylindrical body, the cylindrical body being inserted into the exhaust channel.

3. The compressor according to claim 1 or 2, characterized in that, The porous blocking surface is a filter screen, and the oil outlet is a notch located at the lowest point of the porous blocking surface.

4. The compressor according to claim 1, characterized in that, The porous blocking surface is inclined in a direction away from the exhaust direction, and the inclined surface forms an angle with the axis of the exhaust channel, the angle being 30° to 45°.

5. The compressor according to claim 1 or 4, characterized in that, The oil drain channel is inclined in a direction away from the exhaust direction, and the axis of the oil drain channel forms an angle with the axis of the exhaust channel, the angle being 30° to 45°.

6. The compressor according to claim 1, characterized in that, The compressor further includes a partition, and the housing includes a high-pressure housing and a low-pressure housing. The partition is located between the high-pressure housing and the low-pressure housing. The partition and the high-pressure housing enclose a high-pressure chamber, and the partition and the low-pressure housing enclose a low-pressure chamber. The low-pressure chamber contains a motor, and the high-pressure chamber contains the compression section. The exhaust chamber is located between the compression section and the partition. The partition has a connecting hole, and the exhaust passage communicates with the exhaust chamber through the connecting hole.

7. The compressor according to claim 6, characterized in that, The compressor also includes an intermediate plate that divides the compression section into an upper compression section and a lower compression section, and the exhaust chamber is disposed between the upper compression section and the intermediate plate.

8. The compressor according to claim 6 or 7, characterized in that, The compressor also includes an oil separator structure, which is fixed to one end of the compression section away from the partition plate, and the oil separator inlet of the oil separator structure is connected to the exhaust port of the compression section.

9. The compressor according to claim 8, characterized in that, The compressor also includes: The lower muffler is connected to the exhaust port of the compression section; The oil separator inlet of the oil separator structure is connected to the exhaust port of the lower muffler.

10. The compressor according to claim 1, characterized in that, The cavity between the housing and the compression section is a lower exhaust cavity. An opening is provided on the side of the housing facing the inner cavity, and the opening connects the exhaust port or exhaust channel to the lower exhaust cavity.

11. An air conditioning system, characterized in that, Includes the compressor as described in any one of claims 1 to 10.

12. A vehicle, characterized in that, Including the air conditioning system as described in claim 11.

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