Gas-liquid separator, thermal management system, and vehicle

Abstract

The utility model discloses a gas-liquid separator, heat management system and vehicle, gas-liquid separator includes shell, outlet pipe and first sealing washer, is equipped with medium inlet hole and medium outlet hole on the shell, the outlet pipe is located in the shell and is communicated with medium outlet hole, and the liquid separation cup is located in the shell and is connected with the outlet pipe, and the first sealing washer is clamped between the outlet pipe and the shell. The utility model discloses a gas-liquid separator's medium outlet hole on the shell is good in the communication sealing property of the outlet passage of outlet pipe, has the advantages of little liquid amount of outlet gas, low noise.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a gas-liquid separator, a thermal management system, and a vehicle. Background Technology

[0002] The gas-liquid separator is a crucial component of the thermal management system in new energy vehicles, playing a vital role in ensuring that the refrigerant entering the compressor is in a gaseous state and preventing liquid slugging. Automotive gas-liquid separators are generally classified into coaxial tube type and U-tube type based on the structure of the outlet pipe. In the coaxial tube type, a leakage gap is prone to form between the cover and the coaxial tube. Liquid refrigerant within the gas-liquid separator can easily return to the compressor along with the gaseous refrigerant through this gap, resulting in a large amount of liquid carried into the compressor's intake, causing noise and affecting the compressor's lifespan. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a gas-liquid separator. The gas-liquid separator has good sealing between the medium outlet hole on the outer shell and the gas outlet channel of the gas outlet pipe, and has the advantages of low liquid content in the gas outlet and low noise.

[0005] Embodiments of this utility model also propose a thermal management system and a vehicle.

[0006] The gas-liquid separator of this utility model includes a shell, an outlet pipe and a first sealing ring. The shell is provided with a medium inlet and a medium outlet. The outlet pipe is disposed inside the shell and communicates with the medium outlet. The first sealing ring is sandwiched between the outlet pipe and the shell.

[0007] According to the gas-liquid separator of this utility model embodiment, the refrigerant entering the outer casing through the medium inlet is separated into liquids by the separating cup. The gaseous refrigerant is then discharged to the compressor through the medium outlet hole via the gas outlet channel of the gas outlet pipe. A first sealing ring is provided between the gas outlet pipe and the outer casing to seal the gap between the gas outlet channel and the medium outlet hole. This effectively prevents liquid refrigerant inside the outer casing from entering the medium outlet hole through the gap between the gas outlet channel and the medium outlet hole and entering the compressor along with the gaseous refrigerant. This effectively avoids excessive liquid carryover in the gas, which could cause liquid slugging in the compressor. The resulting low noise during operation of the thermal management system and long compressor lifespan are also achieved.

[0008] In some embodiments, a portion of the vent pipe is disposed within the medium outlet hole, and the first sealing ring is sandwiched between the outer wall surface of the vent pipe and the inner wall surface of the medium outlet hole.

[0009] In some embodiments, a first annular groove is provided on the outer wall surface of the vent pipe or the inner wall surface of the medium outlet, and a portion of the first sealing ring is disposed in the first annular groove.

[0010] In some embodiments, the housing includes a shell and a cover, the top of the shell being open, the cover being connected to the shell and sealing the top opening of the shell, and the medium inlet and the medium outlet being disposed on the cover;

[0011] The gas-liquid separator also includes a second sealing ring and a liquid separating cup. The liquid separating cup is disposed inside the housing and connected to the gas outlet pipe. The second sealing ring surrounds the gas outlet pipe and is sandwiched between the liquid separating cup and the cap.

[0012] In some embodiments, the cap has a second annular groove on the wall surface facing the dispensing cup or the dispensing cup has a second annular groove on the wall surface facing the cap, and a portion of the second sealing ring is disposed in the second annular groove.

[0013] In some embodiments, the housing includes a shell and a cover, the top of the shell being open, the cover being connected to the shell and sealing the top opening of the shell, and the medium inlet and the medium outlet being disposed on the cover;

[0014] The gas-liquid separator also includes a dispensing cup, which is disposed inside the housing and welded to the cap. The seam between the dispensing cup and the cap is arranged around the medium outlet.

[0015] In some embodiments, the dispensing cup is expanded to connect with the vent pipe;

[0016] And / or, the vent pipe is expanded to connect with the cap.

[0017] In some embodiments, the gas-liquid separator further includes an inlet pipe and a filter. The inlet pipe is disposed inside the housing, and the inlet pipe sleeves the outlet pipe and is located on the side of the separating cup opposite to the medium outlet. An inlet channel is formed between the inner wall surface of the inlet pipe and the outer wall surface of the outlet pipe. The inlet channel connects the inner cavity of the housing and the outlet channel of the outlet pipe. An oil return hole is provided at the bottom of the inlet pipe. The filter is connected to the inlet pipe and covers the oil return hole.

[0018] The thermal management system according to embodiments of the present invention includes a gas-liquid separator as described in any of the above embodiments.

[0019] The technical advantages of the thermal management system according to the present invention are the same as those of the gas-liquid separator in the above embodiments, and will not be repeated here.

[0020] The vehicle according to an embodiment of the present invention includes a thermal management system as described above.

[0021] The technical advantages of the vehicle according to this utility model embodiment are the same as the technical advantages of the thermal management system in the above embodiment, and will not be repeated here. Attached Figure Description

[0022] Figure 1 This is a top view of a gas-liquid separator according to an embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional view of a gas-liquid separator according to an embodiment of the present invention.

[0024] Figure label:

[0025] 1. Outer shell; 11. Housing; 12. Cover; 121. Medium inlet; 122. Medium outlet; 2. Air outlet pipe; 3. First sealing ring; 4. Second sealing ring; 5. Dividing cup; 6. Air inlet pipe; 7. Filter; 8. Oil return hole. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The following is combined with Figure 1 and Figure 2 A gas-liquid separator according to an embodiment of the present invention is described.

[0028] The gas-liquid separator of this utility model embodiment includes a housing 1, an outlet pipe 2, and a first sealing ring 3. The housing 1 is provided with a medium inlet 121 and a medium outlet 122, and the outlet pipe 2 is disposed inside the housing 1 and communicates with the medium outlet 122. The first sealing ring 3 is sandwiched between the outlet pipe 2 and the housing 1.

[0029] According to the gas-liquid separator of this utility model embodiment, the refrigerant entering the outer casing 1 through the medium inlet 121 is separated by the liquid separator 5, and the gaseous refrigerant is discharged to the compressor through the gas outlet channel of the gas outlet pipe 2 and the medium outlet 122. A first sealing ring 3 is provided between the gas outlet pipe 2 and the outer casing 1 to seal the gap between the gas outlet channel and the medium outlet 122. This effectively prevents the liquid refrigerant in the outer casing 1 from entering the medium outlet 122 through the gap between the gas outlet channel and the medium outlet 122 and entering the compressor along with the gaseous refrigerant. This effectively avoids excessive liquid carryover in the gas, which could cause liquid slugging in the compressor. The resulting low noise during operation of the thermal management system and long compressor lifespan are also achieved.

[0030] It should be noted that in this embodiment, the axial direction of the medium inlet hole 121 on the outer shell 1 is consistent with the axial direction of the medium outlet hole 122. On the projection plane perpendicular to the axial direction of the medium inlet hole 121, the projection of the medium inlet hole 121 coincides with the projection of the liquid separator 5, so that the refrigerant entering the outer shell 1 through the medium inlet hole 121 can hit the liquid separator 5 to achieve the separation of gaseous refrigerant and liquid refrigerant.

[0031] In some embodiments, such as Figure 2 As shown, a portion of the vent pipe 2 is located inside the medium outlet hole 122, and the first sealing ring 3 is sandwiched between the outer wall surface of the vent pipe 2 and the inner wall surface of the medium outlet hole 122.

[0032] That is, a portion of the outlet pipe 2 is fitted within the medium outlet hole 122 with a gap. The first sealing ring 3 is elastically deformed and positioned within the annular space formed by the outer wall of the outlet pipe 2 and the inner wall of the medium outlet hole 122. This effectively prevents liquid refrigerant inside the outer casing 1 from entering the medium outlet hole 122 through the aforementioned annular space and subsequently entering the compressor along with the gaseous refrigerant. Moreover, compared to placing the first sealing ring 3 on the upper side of the outlet pipe 2, placing it on the outer periphery of the outlet pipe 2 makes the first sealing ring 3 less prone to misalignment, resulting in higher sealing reliability for the gap between the outlet channel and the medium outlet hole 122. Simultaneously, the fit between the outlet pipe 2 and the medium outlet hole 122 effectively ensures their coaxiality, reducing the risk of excessive leakage due to assembly errors that cannot be sealed by the first sealing ring 3.

[0033] For example, such as Figure 2 As shown, the medium outlet 122 includes an outer section extending to the outer wall of the outer casing 1 and an inner section extending to the inner wall of the outer casing 1. The diameter of the outer section is larger than the diameter of the inner section. The upper end of the outlet pipe 2 is fitted within the inner section with a clearance. The first sealing ring 3 is sandwiched between the outer circumferential surface of the outlet pipe 2 and the inner wall surface of the inner section. Simultaneously, the buffering effect of the first sealing ring 3 effectively reduces wear on the outlet pipe 2 and the outer casing 1 under long-term vibration, resulting in higher sealing reliability and a longer service life for the gas-liquid separator.

[0034] It should be noted that the upper end of the vent pipe 2 is also fixedly connected to the outer casing 1 by welding or other means.

[0035] In some embodiments, a first annular groove is provided on the outer wall surface of the vent pipe 2 or the inner wall surface of the medium outlet hole 122, and a portion of the first sealing ring 3 is disposed in the first annular groove.

[0036] The first annular groove increases the contact area between the first sealing ring 3 and the outer wall of the vent pipe 2 or the inner wall of the medium outlet hole 122, thereby improving the sealing performance. On the other hand, it also limits the axial positioning of the first sealing ring 3 in the vent pipe 2, making it less likely to be misaligned axially or slip out of the annular space and affect its sealing effect.

[0037] For example, such as Figure 2 As shown, the first annular groove is set on the inner wall of the medium outlet hole 122 instead of the outlet pipe 2, so that the pipe wall of the outlet pipe 2 does not need to be made too thick, and the structural strength of the upper end of the outlet pipe 2 is effectively guaranteed.

[0038] For example, the first annular groove is provided on the outer wall surface of the air outlet pipe 2, thereby effectively reducing the processing cost of the first annular groove.

[0039] In some embodiments, the outer casing 1 includes a housing 11 and a cover 12. The top of the housing 11 is open, and the cover 12 is connected to the housing 11 and seals the top opening of the housing 11. A medium inlet 121 and a medium outlet 122 are provided on the cover 12. The gas-liquid separator also includes a second sealing ring 4 and a separating cup 5. The separating cup 5 is disposed inside the housing 11 and connected to the gas outlet pipe 2. The second sealing ring 4 surrounds the gas outlet pipe 2 and is sandwiched between the separating cup 5 and the cover 12.

[0040] The liquid dispensing cup 5 is connected to the cap 12 or the housing 11. At this time, the liquid dispensing cup 5, the cap 12 and the outlet pipe 2 form an internal leakage space. By setting a second sealing ring 4 between the liquid dispensing cup 5 and the cap 12, the liquid refrigerant in the housing 1 is effectively prevented from entering the internal leakage space. Then, it enters the medium outlet hole 122 through the gap between the outlet pipe 2 and the cap 12 and then enters the compressor. Combined with the setting of the first sealing ring 3, the probability of liquid refrigerant entering the compressor is further reduced. The noise generated at the compressor when the thermal management system is working is smaller, and the service life of the compressor is longer.

[0041] For example, such as Figure 1 and Figure 2 As shown, the separator cup 5 is connected to the cap 12. After the gas outlet pipe 2 passes through the separator cup 5 and is connected to the cap 12, the cap 12 is welded to the shell 11, thus completing the assembly of the gas-liquid separator.

[0042] In some embodiments, the cap 12 is provided with a second annular groove on the wall surface of the dispensing cup 5 or the wall surface of the dispensing cup 5 towards the cap 12, and a portion of the second sealing ring 4 is disposed in the second annular groove.

[0043] The second annular groove increases the contact area between the second sealing ring 4 and the upper wall of the cap 12 or the liquid separator 5, thereby improving the sealing performance. On the other hand, it also limits the radial positioning of the second sealing ring 4 in the vent pipe 2, making it less prone to radial misalignment that could affect its sealing effect.

[0044] For example, such as Figure 2 As shown, the second annular groove is disposed on the lower wall surface of the cover 12.

[0045] For example, the second annular groove is provided on the upper wall of the dispensing cup 5.

[0046] In some embodiments, the outer casing 1 includes a housing 11 and a cover 12. The top of the housing 11 is open, and the cover 12 is connected to the housing 11 and seals the top opening of the housing 11. A medium inlet 121 and a medium outlet 122 are provided on the cover 12. The gas-liquid separator also includes a separating cup 5, which is disposed inside the housing 11 and welded to the cover 12. The seam between the separating cup 5 and the cover 12 is arranged around the medium outlet 122.

[0047] This not only achieves a fixed connection between the liquid dispensing cup 5 and the cap 12, but also seals the gap between the liquid dispensing cup 5 and the cap 12. Combined with the setting of the first sealing ring 3, the risk of liquid refrigerant in the outer shell 1 entering the internal leakage space and then entering the medium outlet 122 through the gap between the outlet pipe 2 and the cap 12 and then entering the compressor is reduced. The noise generated at the compressor when the thermal management system is working is less, and the service life of the compressor is longer.

[0048] For example, the dispensing cup 5 and the cap 12 of the outer casing 1 are connected by laser welding after they come into contact.

[0049] In some embodiments, the dispensing cup 5 is expanded to connect with the outlet pipe 2. This arrangement ensures a high degree of tightness between the inner wall of the through hole of the dispensing cup 5 and the outer wall of the outlet pipe 2, reducing the risk of liquid refrigerant entering the internal leakage space from the outer casing 1. Furthermore, after the dispensing cup 5 is connected to the cap 12, the coaxiality between the outlet pipe 2 and the medium outlet hole 122 is improved, making the outlet pipe 2 less prone to leaks due to non-perpendicular angles after installation.

[0050] Meanwhile, the outlet pipe 2 is expanded to the cover 12, that is, the outlet pipe 2 is expanded to the medium outlet hole 122 of the cover 12, thereby further ensuring the coaxiality of the outlet pipe 2 and the medium outlet hole 122, and further improving the waterproof sealing between the inner wall surface of the medium outlet hole 122 and the outer wall surface of the outlet pipe 2. The risk of liquid refrigerant leaking out of the outer casing 1 from this point when it enters the internal leakage space is lower.

[0051] Optionally, such as Figure 2As shown, the gas-liquid separator also includes an inlet pipe 6 and a filter 7. The inlet pipe 6 is located inside the outer casing 1, and the outlet pipe 2 is sleeved on the inlet pipe 6 and located on the side of the separating cup 5 away from the medium outlet hole 122. An air intake channel is formed between the inner wall surface of the inlet pipe 6 and the outer wall surface of the outlet pipe 2. The air intake channel connects the inner cavity of the outer casing 1 and the outlet channel of the outlet pipe 2. An oil return hole 8 is provided at the bottom of the inlet pipe 6. The filter 7 is connected to the inlet pipe 6 and covers the oil return hole 8.

[0052] Therefore, the refrigerant entering the outer casing 1 through the medium inlet 121 first hits the separator 5 to separate the liquid and gaseous refrigerants. The gaseous refrigerant enters the intake channel through the upper opening of the intake channel, and then passes through the outlet channel and the medium outlet 122 in sequence, finally entering the compressor. During this process, under the negative pressure of the portion of the intake channel adjacent to the oil return hole 8, the oil medium at the bottom of the inner cavity of the outer casing 1 is drawn into the outlet channel through the oil return hole 8, and enters the compressor together with the gaseous refrigerant, realizing the circulation and recovery of the oil medium. Among them, the oil medium in the inner cavity of the outer casing 1 is first filtered by the filter 7 to remove impurities, and then enters the outlet channel through the oil return hole 8 to avoid the oil medium causing blockage of the thermal management system pipelines.

[0053] The thermal management system according to embodiments of the present invention includes a gas-liquid separator as described in any of the above embodiments.

[0054] The technical advantages of the thermal management system according to the present invention are the same as those of the gas-liquid separator in the above embodiments, and will not be repeated here.

[0055] The vehicle according to an embodiment of the present invention includes a thermal management system as described above.

[0056] The technical advantages of the vehicle according to this utility model embodiment are the same as the technical advantages of the thermal management system in the above embodiment, and will not be repeated here.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "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 are not intended to 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.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A gas-liquid separator, characterized in that, include: The outer casing (1) is provided with a medium inlet (121) and a medium outlet (122); An exhaust pipe (2) is provided inside the outer shell (1) and communicates with the medium outlet (122); The first sealing ring (3) is sandwiched between the air outlet pipe (2) and the outer shell (1).

2. The gas-liquid separator according to claim 1, characterized in that, A portion of the vent pipe (2) is disposed within the medium outlet hole (122), and the first sealing ring (3) is sandwiched between the outer wall surface of the vent pipe (2) and the inner wall surface of the medium outlet hole (122).

3. The gas-liquid separator according to claim 1 or 2, characterized in that, The outer wall of the air outlet pipe (2) or the inner wall of the medium outlet hole (122) is provided with a first annular groove, and a part of the first sealing ring (3) is provided in the first annular groove.

4. The gas-liquid separator according to claim 1 or 2, characterized in that, The outer casing (1) includes a casing (11) and a cover (12). The top of the casing (11) is open. The cover (12) is connected to the casing (11) and seals the top opening of the casing (11). The medium inlet (121) and the medium outlet (122) are located on the cover (12). The gas-liquid separator also includes a second sealing ring (4) and a liquid separator (5). The liquid separator (5) is located inside the housing (11) and connected to the gas outlet pipe (2). The second sealing ring (4) surrounds the gas outlet pipe (2) and is sandwiched between the liquid separator (5) and the cap (12).

5. The gas-liquid separator according to claim 4, characterized in that, The cap (12) has a second annular groove on the wall of the dispensing cup (5) or the wall of the dispensing cup (5) has a second annular groove on the wall of the cap (12), and a portion of the second sealing ring (4) is disposed in the second annular groove.

6. The gas-liquid separator according to claim 4, characterized in that, The gas-liquid separator also includes: An air inlet pipe (6) is provided inside the outer shell (1). The air inlet pipe (6) is fitted with the air outlet pipe (2) and is located on the side of the liquid separator (5) away from the medium outlet (122). An air inlet channel is formed between the inner wall surface of the air inlet pipe (6) and the outer wall surface of the air outlet pipe (2). The air inlet channel connects the inner cavity of the outer shell (1) and the air outlet channel of the air outlet pipe (2). An oil return hole (8) is provided at the bottom of the air inlet pipe (6). A filter (7) is connected to the air intake pipe (6) and covers the oil return hole (8).

7. The gas-liquid separator according to claim 1 or 2, characterized in that, The outer casing (1) includes a casing (11) and a cover (12). The top of the casing (11) is open. The cover (12) is connected to the casing (11) and seals the top opening of the casing (11). The medium inlet (121) and the medium outlet (122) are located on the cover (12). The gas-liquid separator also includes a dispensing cup (5), which is disposed inside the housing (11) and welded to the cap (12). The seam between the dispensing cup (5) and the cap (12) is arranged around the medium outlet (122).

8. The gas-liquid separator according to claim 7, characterized in that, The dispensing cup (5) is connected to the vent pipe (2) by an expansion joint; And / or, the vent pipe (2) is expanded to connect with the cap (12).

9. The gas-liquid separator according to claim 7, characterized in that, The gas-liquid separator also includes: An air inlet pipe (6) is provided inside the outer shell (1). The air inlet pipe (6) is fitted with the air outlet pipe (2) and is located on the side of the liquid separator (5) away from the medium outlet (122). An air inlet channel is formed between the inner wall surface of the air inlet pipe (6) and the outer wall surface of the air outlet pipe (2). The air inlet channel connects the inner cavity of the outer shell (1) and the air outlet channel of the air outlet pipe (2). An oil return hole (8) is provided at the bottom of the air inlet pipe (6). A filter (7) is connected to the air intake pipe (6) and covers the oil return hole (8).

10. A thermal management system, characterized in that, Includes the gas-liquid separator according to any one of claims 1-9.

11. A vehicle, characterized in that, Includes the thermal management system according to claim 10.

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