High-efficiency gas-liquid separator for automobile refrigeration

Abstract

The utility model discloses a kind of high-efficiency gas-liquid separators of automobile refrigeration, its structure includes cylindrical shell, shell has upper cover and lower cover, upper cover is provided with air inlet and air outlet;Shell inside corresponding air inlet position is equipped with baffle, so that the gas-liquid mixed fluid into shell is impacted by baffle to realize gas-liquid separation;Shell inside corresponding air outlet position is provided with U-shaped gas return pipe, U-shaped gas return pipe includes air inlet branch pipe and air outlet branch pipe and air outlet branch pipe is provided with pressure equalizing hole;The upper end of air outlet branch pipe is higher than the upper end of air inlet branch pipe, and the upper end of air outlet branch pipe is communicated with the air outlet of upper cover;The bottom of U-shaped gas return pipe is also provided with filter assembly;The utility model is impacted by setting baffle to realize the impact sputtering separation of mixed fluid, significantly improve initial separation efficiency, realize high-efficiency complete gas-liquid separation.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning system technology, and specifically to a gas-liquid separator for automotive refrigeration systems. Background Technology

[0002] In automotive refrigeration systems, the gas-liquid separator is a key component ensuring stable system operation. Its function is to separate the liquid components from the refrigerant, preventing liquid refrigerant from entering the compressor and causing liquid slugging damage. Traditional gas-liquid separators mainly suffer from the following technical defects: 1. Traditional separators rely primarily on gravity settling for gas-liquid separation, resulting in incomplete separation and easy carryover of liquid refrigerant; 2. Internal pressure imbalances can affect separation efficiency and oil return stability; 3. Inaccurate oil return control: lack of precise control over the return flow of refrigeration oil may affect compressor lubrication; 4. Inadequate structural design: unreasonable internal fluid path design affects separation efficiency and system stability. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-efficiency gas-liquid separator for automotive refrigeration to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency gas-liquid separator for automotive refrigeration, comprising a cylindrical shell, the shell having an upper cover and a lower cover, the upper cover being provided with an air inlet and an air outlet; a baffle plate is provided inside the shell corresponding to the air inlet, so that the gas-liquid mixture entering the shell is impacted and splashed by the baffle plate to achieve gas-liquid separation; a U-shaped return pipe is provided inside the shell corresponding to the air outlet, the U-shaped return pipe including an air inlet branch pipe and an air outlet branch pipe, and the air outlet branch pipe having a pressure equalization hole; the upper end of the air outlet branch pipe is higher than the upper end of the air inlet branch pipe, and the upper end of the air outlet branch pipe is connected to the air outlet of the upper cover; a filter assembly is also provided at the bottom of the U-shaped return pipe.

[0005] The present invention is further configured such that: the interior of the shell is divided into multiple separation chambers by at least one vertical partition; adjacent separation chambers are interconnected by through holes formed on the vertical partition.

[0006] The present invention is further configured such that: the top edge of the vertical partition is recessed to form two slots corresponding to the installation position of the baffle; and the bottom of the baffle is provided with two buckles that engage with the slots.

[0007] The present invention is further configured such that: the top surface of the baffle is provided with a guide protrusion corresponding to the lower part of the air intake interface; the baffle has an inclined guide slope; and a guide channel with a gradually decreasing cross-sectional area is formed between the guide slope and the inner wall of the housing.

[0008] The present invention is further configured such that: the filter assembly includes a main shell; the interior of the main shell is provided with a filter layer and an oil collection layer from bottom to top; the filter layer and the oil collection layer are connected by an oil return hole.

[0009] The present invention is further configured such that: multiple flow windows are provided on the side wall of the main body shell in the area corresponding to the filter layer; and a filter screen is covered on the inner or outer side of each flow window.

[0010] The present invention is further configured such that the upper cover and the lower cover have several assembly holes for installing the separator.

[0011] The present invention is further configured such that: the upper cover is provided with a spare interface; the spare interface is fitted with a sealing plug by a threaded connection.

[0012] In summary, this utility model has the following beneficial effects: By setting a baffle plate, this utility model achieves impact and splash separation of the mixed fluid, which significantly improves the initial separation efficiency and realizes efficient and thorough gas-liquid separation; the pressure equalization hole design effectively balances the system pressure, ensuring that the separator works stably under various operating conditions; the high-efficiency filtration and oil return hole design ensures the precise return of refrigeration oil, guaranteeing compressor lubrication; the optimized fluid path and component layout improve overall performance; and the modular design and standardized interfaces facilitate installation and maintenance. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the internal structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the housing of this utility model; Figure 4 This is a cross-sectional view of the structure of the return air pipe and filter assembly of this utility model; Figure 5 This is a three-dimensional structural diagram of the filter assembly of this utility model; Figure 6 This is a schematic diagram illustrating the effect of the baffle plate of this utility model.

[0015] Reference numerals: 1. Shell; 10. Top cover; 11. Bottom cover; 12. Air inlet; 13. Air outlet; 14. Vertical partition; 15. Separation chamber; 16. Through hole; 17. Slot; 18. Snap-on; 19. Assembly hole; 2. Baffle; 20. Guide protrusion; 21. Guide slope; 22. Drainage channel; 3. Return pipe; 30. Air inlet branch pipe; 31. Air outlet branch pipe; 32. Pressure equalization hole; 4. Filter assembly; 40. Main shell; 41. Filter layer; 42. Oil collection layer; 43. Oil return hole; 44. Flow window; 45. Filter screen; 5. Spare interface; 50. Sealing plug. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-6 As shown in the figure, an efficient gas-liquid separator for automotive refrigeration according to an embodiment of the present invention includes a cylindrical shell 1, which has an upper cover 10 and a lower cover 11. The upper cover 10 is provided with an air inlet 12 and an air outlet 13. A baffle 2 is provided inside the shell 1 at the position corresponding to the air inlet 12, so that the gas-liquid mixture entering the shell 1 is impacted and splashed by the baffle 2 to achieve gas-liquid separation. A U-shaped return pipe 3 is provided inside the shell 1 at the position corresponding to the air outlet 13. The U-shaped return pipe 3 includes an air inlet branch pipe 30 and an air outlet branch pipe 31, and the air outlet branch pipe 31 is provided with a pressure equalization hole 32. The upper end of the air outlet branch pipe 31 is higher than the upper end of the air inlet branch pipe 30, and the upper end of the air outlet branch pipe 31 is connected to the air outlet 13 of the upper cover 10. A filter assembly 4 is also provided at the bottom of the U-shaped return pipe 3.

[0018] During use, the baffle plate 2 is set to achieve impact and splash separation of the mixed fluid, which significantly improves the initial separation efficiency; the U-shaped return pipe 3 structure combined with the pressure equalization hole 32 design effectively balances the pressure difference inside and outside the system and prevents liquid refrigerant from being carried away; the filter component 4 ensures the purity of the return refrigerant, which improves the overall working efficiency and reliability of the separator.

[0019] The interior of the housing 1 is divided into a plurality of separation chambers 15 by at least one vertical partition 14; adjacent separation chambers 15 are interconnected by through holes 16 formed on the vertical partition 14.

[0020] In use, multiple series-connected separation chambers 15 significantly improve separation efficiency, ensuring that the refrigerant entering the return gas pipe 3 meets the pure gaseous standard.

[0021] The top edge of the vertical baffle 14 is recessed to form two slots 17 corresponding to the installation position of the baffle 2; the bottom of the baffle 2 is provided with two buckles 18 that engage with the slots 17.

[0022] In use, the design of the slot 17 and the buckle 18 enables the quick installation and precise positioning of the baffle 2, improving production assembly efficiency and ensuring the stability of the baffle 2 during operation. The buckle 18 connection of the baffle 2 facilitates daily maintenance and replacement. The vertical partition 14 is also provided with a guide sloping waist above each slot 17 to facilitate the smooth insertion of the baffle 2 during installation.

[0023] The top surface of the baffle 2 is provided with a guide protrusion 20 corresponding to the lower part of the air intake interface 12; the baffle 2 has an inclined guide slope 21; the guide slope 21 and the inner wall of the housing 1 form a flow channel 22 with a gradually decreasing cross-sectional area.

[0024] In use, the guide protrusion 20 and the tapered guide channel 22 optimize the fluid dynamics path, promote droplet aggregation and orderly flow, further improve the gas-liquid separation effect, and ensure that the separated liquid is smoothly guided to the designated area.

[0025] The filter assembly 4 includes a main housing 40; the interior of the main housing 40 is provided with a filter layer 41 and an oil collection layer 42 from bottom to top; the filter layer 41 and the oil collection layer 42 are connected by an oil return hole 43.

[0026] During use, the layered design of the filter layer 41 and the oil collection layer 42 enables fine filtration of the refrigerant and precise control of the oil volume. The setting of the oil return hole 43 ensures that an appropriate amount of refrigeration oil flows back to the compressor, guaranteeing the system's lubrication requirements.

[0027] The side wall of the main body shell 40 has multiple flow windows 44 in the area corresponding to the filter layer 41; the inner or outer side of each flow window 44 is covered with a filter screen 45.

[0028] When in use, the flow window 44, together with the filter screen 45, forms an effective filtration barrier, ensuring the filtration effect while maintaining an appropriate flow area and ensuring that the system flow resistance is within a reasonable range.

[0029] The upper cover 10 and the lower cover 11 have several mounting holes 19 for installing the separator.

[0030] When in use, the well-arranged assembly holes 19 facilitate the installation and fixation of the separator in the refrigeration system, improving the product's applicability and installation convenience, and adapting to different installation environment requirements.

[0031] The top cover 10 is also provided with a spare interface 5; the spare interface 5 is fitted with a sealing plug 50 via a threaded connection.

[0032] When in use, the design of the spare interface 5 enhances the product's adaptability and scalability. That is, the product has two interfaces (upper interface and side interface), and users can assemble it according to different system requirements. The system sealing integrity of the idle interface is maintained by the sealing plug 50.

[0033] The specific working process of this utility model is as follows: The mixed fluid of gaseous refrigerant, refrigeration oil and liquid refrigerant enters the separator housing 1 from the air inlet 12, and first impacts the guide protrusion 20 of the baffle 2 to generate impact splash. This process uses fluid kinetic energy to achieve gas-liquid separation, and the liquid components are effectively separated under the action of inertia; The separated pure gaseous refrigerant enters from the upper end of the inlet branch pipe 30 of the U-shaped return pipe 3; the pressure equalization hole 32 set on the outlet branch pipe 31 effectively balances the pressure difference between the separator and the return system, ensuring stable system operation; the design of the upper end of the outlet branch pipe 31 being higher than the inlet branch pipe 30 effectively prevents liquid refrigerant from being carried away; the mixture of separated liquid refrigerant and refrigeration oil settles to the bottom of the housing 1 and enters the filter layer 41 through the flow window 44 of the filter assembly 4; the lower layer of the filter screen 45 performs overall filtration, and the upper layer controls the return of refrigeration oil through the oil return hole 43. This design ensures that an appropriate amount of refrigeration oil returns to the compressor to meet the system lubrication requirements.

[0034] It should also be noted that the terms used in this utility model, such as "front," "rear," "vertical," and "horizontal," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. The above descriptions are merely preferred embodiments of this utility model, and the scope of protection of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within the scope of protection of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.

Claims

1. A high-efficiency gas-liquid separator for automotive refrigeration, comprising a cylindrical housing (1) having an upper cover (10) and a lower cover (11), characterized in that: The top cover (10) is provided with an air inlet (12) and an air outlet (13); a baffle plate (2) is provided inside the housing (1) corresponding to the position of the air inlet (12), so that the gas-liquid mixture entering the housing (1) is impacted and splashed by the baffle plate (2) to achieve gas-liquid separation; a U-shaped return pipe (3) is provided inside the housing (1) corresponding to the position of the air outlet (13), the U-shaped return pipe (3) includes an air inlet branch pipe (30) and an air outlet branch pipe (31), and an equalizing hole (32) is opened on the air outlet branch pipe (31); the upper end of the air outlet branch pipe (31) is higher than the upper end of the air inlet branch pipe (30), and the upper end of the air outlet branch pipe (31) is connected to the air outlet (13) of the top cover (10); a filter assembly (4) is also provided at the bottom of the U-shaped return pipe (3).

2. The high-efficiency gas-liquid separator for automotive refrigeration according to claim 1, characterized in that: The housing (1) is divided into multiple separation chambers (15) by at least one vertical partition (14); adjacent separation chambers (15) are interconnected by through holes (16) formed on the vertical partition (14).

3. The high-efficiency gas-liquid separator for automotive refrigeration according to claim 2, characterized in that: The top edge of the vertical partition (14) is recessed to form two slots (17) corresponding to the installation position of the baffle (2); the bottom of the baffle (2) is provided with two buckles (18) that engage with the slots (17).

4. The high-efficiency gas-liquid separator for automotive refrigeration according to claim 3, characterized in that: The top surface of the baffle (2) is provided with a flow guide protrusion (20) corresponding to the lower part of the air intake port (12); the baffle (2) has an inclined flow guide slope (21); the flow guide slope (21) and the inner wall of the housing (1) form a flow channel (22) with a gradually decreasing cross-sectional area.

5. The high-efficiency gas-liquid separator for automotive refrigeration according to claim 1, characterized in that: The filter assembly (4) includes a main shell (40); the interior of the main shell (40) is provided with a filter layer (41) and an oil collection layer (42) from bottom to top; the filter layer (41) and the oil collection layer (42) are connected by an oil return hole (43).

6. The high-efficiency gas-liquid separator for automotive refrigeration according to claim 5, characterized in that: The sidewall of the main body shell (40) is provided with a plurality of flow windows (44) in the area corresponding to the filter layer (41); the inner or outer side of each flow window (44) is covered with a filter screen (45).

7. The high-efficiency gas-liquid separator for automotive refrigeration according to claim 1, characterized in that: The upper cover (10) and lower cover (11) are provided with a number of assembly holes (19) for installing the separator.

8. The high-efficiency gas-liquid separator for automotive refrigeration according to claim 1, characterized in that: The top cover (10) is also provided with a spare interface (5); the spare interface (5) is fitted with a sealing plug (50) by a threaded connection.

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