A super oil separator device employing a multi-stage separation coupling technique

Abstract

The utility model relates to oil gas separation equipment technical field in refrigeration system discloses a super oil separator device of adopting multistage separation coupling technology, including cylinder, the cylinder is equipped with oil storage groove, the tangent direction of its inner wall extension's air inlet and air outlet, still be provided with inner cover, inner tube and condensation adsorption core body in proper order in cylinder. Inner cover is located above oil storage groove and is welded fixed with cylinder inner wall support frame, inner tube is placed above inner cover, its outer periphery forms first airflow channel with cylinder inner wall, and inner tube bottom is equipped with a plurality of air inlet, and the second airflow channel is formed in inner tube inside, and the filter intercepts the net and is arranged in the passage of inner tube, and the condensation adsorption core body is arranged above inner tube and is communicated with air outlet. The utility model solves the problem that the oil separator of prior art causes the low oil separation efficiency of insufficient separation series and the problem that the compressor is damaged by oil running under low temperature working condition through the multistage coupling separation structure.

Description

Technical Field

[0001] This utility model relates to the technical field of oil-gas separation equipment in refrigeration systems, and in particular to a super oil separator device employing multi-stage separation coupling technology. Background Technology

[0002] In refrigeration and air conditioning systems, the high-temperature, high-pressure refrigerant gas discharged from the compressor often contains a certain amount of refrigeration oil. To ensure reliable lubrication of the compressor and maintain system heat exchange efficiency, an oil separator is usually required to separate most of the refrigeration oil from the refrigerant and return it to the compressor.

[0003] In existing technologies, traditional oil separators mostly employ relatively simple separation principles, such as using centrifugal force for primary separation, or adding a filter screen to centrifugal separation to form secondary separation. This structure is effective in separating large oil droplets, but it lacks a mechanism for efficiently capturing fine oil mist of micron size and below, thus its overall oil separation efficiency usually has an upper limit.

[0004] This structural defect is particularly prominent in low-temperature refrigeration systems or under conditions of large system load variations. In low-temperature environments, the miscibility between refrigeration oil and refrigerant decreases. Once fine oil mist that cannot be effectively separated enters the system's heat exchanger along with the refrigerant, it becomes difficult for the compressor to smoothly return the oil. Over time, more and more refrigeration oil accumulates in the system, not only adhering to the surface of the heat exchange tubes and reducing heat exchange efficiency, but also causing insufficient lubrication of the compressor due to continuous oil loss, ultimately leading to serious malfunctions such as wear and even burnout.

[0005] Therefore, this utility model proposes a super oil separator device using multi-stage separation coupling technology to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing oil separator technology, such as insufficient separation stages and inability to effectively capture fine oil mist, resulting in low oil separation efficiency and easy oil leakage damage to the compressor under harsh operating conditions, this utility model aims to provide a super oil separator device with improved structure that can effectively solve the above problems by adopting multi-stage separation coupling technology.

[0007] This utility model provides a super oil separator device using multi-stage separation coupling technology, comprising: a cylinder, an oil storage tank at the lower part of the cylinder, an air inlet extending tangentially along the inner wall of the cylinder on the side wall, an air outlet at the top of the cylinder, an inner cover, an inner cylinder, a filter screen, and a condensation adsorption core.

[0008] The inner cover, inner cylinder, and condensation adsorption core are connected in series along the airflow path in the inner cavity of the cylinder, forming a multi-stage separation core structure. The inner cover is an umbrella-shaped structure with its umbrella surface at a 28° angle to the horizontal.

[0009] Furthermore, the inner cover is fixedly connected to the inner wall of the cylinder and covers the oil storage tank. The outer periphery of the inner cylinder and the inner wall of the cylinder form an annular first airflow channel by leaving a gap. The filter interception net is fixed in the second airflow channel of the inner cylinder. The condensation adsorption core is disposed above the inner cylinder and located downstream of the second airflow channel. The outer cavity of the condensation adsorption core is connected to the air outlet.

[0010] Preferably, the top opening of the cylinder is sealed by a sealing flange.

[0011] Preferably, the bottom of the oil storage tank is provided with an oil outlet for discharging lubricating oil.

[0012] Preferably, a sight glass for observing the oil level is provided on the cylinder at a position corresponding to the oil storage tank.

[0013] Preferably, the super oil separator device employing multi-stage separation coupling technology further includes an electric heater, which is disposed in the oil storage tank and used to heat the collected lubricating oil.

[0014] Preferably, the inner cover is an umbrella-shaped cover with an included angle of 28°.

[0015] Preferably, the bottom of the inner cylinder is provided with multiple air inlets.

[0016] Preferably, as a specific embodiment, the condensation adsorption core is cylindrical, and its lower end is sealed to the upper surface of the inner cylinder.

[0017] Preferably, the filter is made of metal wire mesh or fiber felt.

[0018] This utility model has the following beneficial effects: 1. In this utility model, by sequentially coupling a three-stage separation structure of centrifugal separation, filtration and interception and condensation adsorption along the airflow path inside the cylinder, the problem of existing oil separators using only one or two stages of separation, low separation accuracy and serious oil leakage under low temperature or low load conditions is solved. The technical effect of high oil separation efficiency, stable operation and low failure rate is achieved, which can effectively protect the safe operation of the compressor.

[0019] 2. In this utility model, the above-mentioned multi-stage separation structure achieves extremely high oil separation efficiency, which solves the problem in the prior art that a large amount of refrigeration oil enters the heat exchanger due to incomplete oil separation, adheres to the surface of the heat exchange tube to form an oil film, and increases thermal resistance. It achieves the technical effect of reducing the amount of refrigeration oil entering the system and ensuring that the heat exchanger is always highly efficient and stable, thereby improving the energy efficiency of the entire refrigeration system. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a super oil separator device using multi-stage separation coupling technology proposed in this utility model.

[0021] Legend: 1. Sealing flange; 2. Air outlet; 3. Cylinder body; 4. Sight glass; 5. Oil outlet; 6. Electric heater; 7. Oil storage tank; 8. Inner cover; 9. Inner cylinder; 10. Filter screen; 11. Air inlet; 12. Coagulation adsorption core. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0023] Please refer to Figure 1 This utility model provides a super oil separator device using multi-stage separation coupling technology, which aims to solve the problem that existing oil separators cannot effectively capture fine oil mist due to insufficient separation stages, resulting in low oil separation efficiency under low temperature or low load conditions.

[0024] like Figure 1As shown, the super oil separator device employing multi-stage separation coupling technology includes a cylinder 3, which serves as the main installation and support structure of the entire device. A multi-stage separation mechanism is integrated within the cylinder 3. Specifically, the lower part of the cylinder 3 is integrally formed or welded to form an oil storage tank 7 for collecting the separated lubricating oil. An air inlet 11 is provided on the side wall of the cylinder 3, with its axis extending tangentially along the inner wall of the cylinder 3 to guide the oil-gas mixture into the tank, generating a centrifugal rotation effect. An air outlet 2 is fixedly connected to the center of the top of the cylinder 3 to discharge the separated clean gas. Inside the cylinder 3, an inner cover 8, an inner cylinder 9, a filter screen 10, and a condensation adsorption core 12 are installed. These four components together constitute a series-connected multi-stage separation core structure. The inner cover 8 is fixedly connected to the inner wall of the cylinder 3 by welding and covers the oil storage tank 7. The inner cylinder 9 is positioned above the inner cover 8. A gap is left between the outer periphery of the inner cylinder 9 and the inner wall of the cylinder 3, thus forming an annular first airflow channel. The bottom of the inner cylinder 9 is provided with multiple air inlets. The oil-gas mixture enters the inner cylinder 9 from the first airflow channel through the air inlets at the bottom of the inner cylinder 9 to form a second airflow channel. This second airflow channel is the necessary path for the oil-gas mixture after preliminary centrifugal separation. The filter interception net 10 is a metal wire mesh or fiber felt structure, which fills and fixes the second airflow channel formed above to perform secondary filtration and interception on the gas flowing through the channel. The condensation adsorption core 12 is positioned above the inner cylinder 9 and is located downstream of the second airflow channel in the airflow path. It is used for the final fine separation of the gas. The outer cavity of the condensation adsorption core 12 is connected to the air outlet 2 at the top of the cylinder 3 to ensure that the clean gas after final separation can be smoothly discharged.

[0025] To achieve the above-mentioned series-connected multi-stage separation structure, the core of the technical solution in this embodiment lies in the specific structural cooperation and connection relationship formed between the inner cover 8, the inner cylinder 9, the filter interception net 10 and the condensation adsorption core 12. This structure physically forces the airflow to pass through the separation zones at each stage in sequence along a preset path.

[0026] Please refer to Figure 1The core structure is described in detail below: The inner cover 8 is specifically an umbrella-shaped cover with an included angle of 28°. The outer periphery of the inner cover 8 is fixed to the inner wall of the cylinder 3 by welding. Its function is to divide the inner cavity of the cylinder 3 in the vertical direction, preventing oil in the oil storage tank 7 from entering the inner cylinder 9, and providing an installation base for the inner cylinder 9. The filter interception net 10 is fixed in the second airflow channel of the inner cylinder 9. At the same time, the condensation adsorption core 12 is cylindrical, and its lower end is sealed to the edge of the central through hole on the upper surface of the inner cylinder 9 through a flange or snap-fit ​​structure. The upper end of the condensation adsorption core 12 faces the air outlet 2. In the assembled state, the gap between the outer wall of the inner cylinder 9 and the inner wall of the cylinder 3 forms the first airflow channel, and the inside of the inner cylinder 9 is the second airflow channel. The inner cylinder 9 isolates the first airflow channel and the second airflow channel. The oil-gas mixture can only enter the second airflow channel from the first airflow channel through the bottom air inlet of the inner cylinder 9. The filter interception net 10 A second airflow channel is fixed in the inner cylinder 9 to perform a second-stage filtration and separation of the oil-gas mixture. The condensation adsorption core 12 is cylindrical, with a third airflow channel inside. The lower center of the condensation adsorption core 12 is directly connected to the central through hole on the upper surface of the inner cylinder 9. This structure ensures that the airflow can only enter the third airflow channel inside the condensation adsorption core 12 from the second airflow channel of the inner cylinder 9, and then pass through the core material inside the condensation adsorption core 12 to the outside of the condensation adsorption core 12 before being discharged through the outlet 2. This structure ensures that the gas must complete the three separation steps of centrifugation, filtration and condensation adsorption in sequence. In addition, to ensure the sealing performance of the entire device and the later maintenance and replacement of the condensation adsorption core 12, an annular flange is welded to the top opening of the cylinder 3 and sealed by a sealing flange 1. The sealing flange 1 is detachably fixed to the annular flange by multiple bolts, and a high-pressure resistant sealing gasket is sandwiched between the two contact surfaces.

[0027] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In a preferred embodiment, to facilitate the discharge of lubricating oil collected in the oil storage tank 7 and to monitor the oil level, an oil outlet 5 is provided at the lowest part of the oil storage tank 7. The oil outlet 5 is a threaded pipe joint and an angle valve to facilitate connection to an external oil return pipeline. At the same time, on the side wall of the cylinder 3, at a position corresponding to the effective height range of the oil storage tank 7, a sight glass 4 is fixed by welding. The sight glass 4 is made of high-pressure resistant transparent glass or quartz material and is used to directly observe the oil level inside the oil storage tank 7.

[0028] As another preferred embodiment, in order to prevent the lubricating oil in the oil storage tank 7 from becoming too viscous or even solidifying under low temperature conditions, thus affecting the return of oil, an electric heater 6 is also fixedly installed in the inner cavity of the oil storage tank 7. The electric heater 6 is preferably a straight tube electric heating rod, which lies horizontally at the bottom of the oil storage tank 7 and passes through the wall of the cylinder 3 through a sealing element to be connected to an external power source for timely heating of the collected lubricating oil.

[0029] As a further preferred embodiment, in order to further clarify the path of airflow from the filtration and interception zone to the condensation and adsorption zone, the inner cylinder 9 has a central through hole on its upper surface, and the upper surface of the inner cylinder 9 is sealed to the inner wall of the cylinder 3 by welding, thus blocking the path of the oil-gas mixture to bypass the filtration and interception zone and directly enter the condensation and adsorption zone from the first airflow channel. The condensation and adsorption core 12 is fixed at the central through hole on the upper surface of the inner cylinder 9. This structure ensures that the gas passing through the filtration and interception net 10 must be collected and enter the internal third airflow channel of the condensation and adsorption core 12 through the central through hole.

[0030] As another preferred embodiment, in order to achieve good filtration effect and structural stability, the material of the filter interception net 10 is specifically a metal wire mesh woven from stainless steel wire or a fiber felt made of oil-resistant and corrosion-resistant fibers.

[0031] Working principle: The oil-gas mixture carrying lubricating oil enters at high speed from the air inlet 11 along the tangential direction of the inner wall of the cylinder 3, forming a rotating airflow inside the cylinder 3. This is the first stage of centrifugal separation process. During this process, due to the density difference between oil droplets and gas, the oil droplets with larger mass are thrown towards the inner wall of the cylinder 3 under the action of centrifugal force, and slide down along the inner wall under the action of gravity, and finally collect in the oil storage tank 7 at the bottom of the cylinder 3.

[0032] After the first stage of separation is completed, the gas carrying fine oil mist flows upward under the action of pressure difference. Due to the obstruction of the inner cylinder 3, the gas is forced to be guided to the annular first airflow channel formed between its outer periphery and the inner wall of the cylinder 3. Then, it enters the inner second airflow channel of the inner cylinder 9 from the lower air inlet and passes through the filter interception net 10 in this channel. This is the second stage of filtration and interception separation process. In this process, larger oil mist particles are directly captured by the mesh or fibers of the filter interception net 10 and agglomerate into oil droplets. These oil droplets also drip back into the oil storage tank 7 under the action of gravity.

[0033] After the second stage of separation is completed, only extremely fine oil mist remains in the gas. The gas continues to flow upward to the space above the inner cylinder 9 and enters the condensation adsorption core 12 through the central through hole. This is the third stage of condensation adsorption separation process. In this process, when the gas passes through the special material of the condensation adsorption core 12, the remaining tiny oil mist particles are adsorbed by the core material and condense into larger oil droplets on its surface. When the oil droplets are large enough, they will fall off the core and eventually gather at the bottom of the condensation adsorption core 12 and return to the compressor through the oil return system.

[0034] After three-stage separation, the clean gas is finally discharged from the top outlet 2 through the outer cavity of the condensation adsorption core 12. The lubricating oil collected in the oil storage tank 7 returns to the compressor through the oil outlet 5. The sight glass 4 can be used to observe the oil level in real time, while the electric heater 6 can be started when needed to ensure the fluidity of the lubricating oil. The sealing flange 1 ensures the sealing performance of the entire device, ensuring a stable and efficient separation process. The inner cover 8 works in conjunction with the inner cylinder 9, the filter interception net 10, and the condensation adsorption core 12 to achieve a stable multi-stage oil-gas separation process.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A super oil separator device employing multi-stage separation coupling technology, comprising a cylinder (3), an oil storage tank (7) provided at the lower part of the cylinder (3), an air inlet (11) extending tangentially along the inner wall of the cylinder (3) on the side wall, and an air outlet (2) provided at the top of the cylinder (3); characterized in that, The device further includes: Inner cover (8), the inner cover (8) is an umbrella-shaped structure, the umbrella surface is at a 28° angle with the horizontal, the inner cover (8) is fixedly connected to the inner wall of the cylinder (3) and covers the oil storage tank (7); Inner cylinder (9), the inner cylinder (9) is placed above the inner cover (8), and its bottom is provided with multiple air inlets. The outer periphery of the inner cylinder (9) and the inner wall of the cylinder body (3) form an annular first airflow channel, and the interior of the inner cylinder (9) forms a second airflow channel. A filter interception net (10) is filled with metal wire mesh or fiber felt material and fixed in the second airflow channel of the inner cylinder (9); A condensation adsorption core (12) is disposed above the inner cylinder (9). The condensation adsorption core (12) is located downstream of the second airflow channel, and the outer cavity of the condensation adsorption core (12) is connected to the air outlet (2).

2. The super oil separator device employing multi-stage separation coupling technology according to claim 1, characterized in that, The top opening of the cylinder (3) is sealed by a sealing flange (1).

3. The super oil separator device employing multi-stage separation coupling technology according to claim 1, characterized in that, The bottom of the oil storage tank (7) is provided with an oil outlet (5) for discharging lubricating oil.

4. The super oil separator device employing multi-stage separation coupling technology according to claim 1, characterized in that, A sight glass (4) for observing the oil level is provided on the cylinder (3) at a position corresponding to the oil storage tank (7).

5. The super oil separator device employing multi-stage separation coupling technology according to claim 1, characterized in that, An electric heater (6) is installed inside the oil storage tank (7).

6. The super oil separator device employing multi-stage separation coupling technology according to claim 1, characterized in that, The inner cover (8) is an umbrella-shaped cover with an included angle of 28°.

7. The super oil separator device employing multi-stage separation coupling technology according to claim 1, characterized in that, The condensation adsorption core (12) is cylindrical, and its lower end is sealed to the upper surface of the inner cylinder (9).

8. The super oil separator device employing multi-stage separation coupling technology according to claim 1, characterized in that, The filter screen (10) is made of metal wire mesh or fiber felt.

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