Gas-liquid separator for airborne refrigerating system
By designing a gas-liquid separator with a spiral coil and a rotating mechanism in the airborne refrigeration system, the problem of poor gas-liquid separation caused by equivalent gravity changes was solved, achieving effective gas-liquid separation under varying conditions and improving the stability and adaptability of the refrigeration system.
Patent Information
- Application Number
- CN202520687936.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-11
AI Technical Summary
Common airborne refrigeration system gas-liquid separators suffer from poor gas-liquid separation performance due to equivalent gravity changes when the aircraft is overloaded or its attitude changes, failing to meet the stability and adaptability requirements of the refrigeration system.
A gas-liquid separator was designed, comprising a gas-liquid two-phase inlet, a gas phase outlet, a gas-liquid separation baffle, a spiral coil, a leakage hole, a fixed liquid outlet pipe, and a rotating mechanism. The gas-liquid separation is achieved by utilizing the centrifugal force of the spiral coil and the rotating mechanism, ensuring effective separation of the gas and liquid phases under varying equivalent gravity.
It achieves stability and adaptability of gas-liquid separation under overload and attitude change conditions, avoids the decline in refrigeration performance caused by refrigerant gas-liquid mixing, and improves the stability and adaptability of airborne refrigeration system.
Smart Images
Figure CN223965660U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gas-liquid separator technology, and in particular relates to a gas-liquid separator for airborne refrigeration systems that is not limited by overload or attitude. Background Technology
[0002] With the continuous development of aviation technology, airborne refrigeration systems play a crucial role in ensuring flight safety, improving flight performance, and maintaining the normal operation of airborne equipment. Numerous electronic and optical devices have increasingly stringent requirements for temperature control. Gas-liquid separators in cascade refrigeration systems are used to separate the gas-liquid mixture of refrigerant. The effective separation of gas and liquid is directly related to the cooling effect within the evaporator, making the optimization of the performance and function of gas-liquid separators particularly important. Currently, gas-liquid separators mainly use fixed gas-liquid two-phase outlets, requiring the tank to be placed in a fixed orientation. However, when the aircraft undergoes rapid overload changes or changes in attitude angle, the equivalent gravity of common gas-liquid separators changes, thus preventing the achievement of gas-liquid two-phase separation. Summary of the Invention
[0003] The purpose of this invention is to provide a gas-liquid separator for airborne refrigeration systems, which solves the problem that common gas-liquid separators cannot achieve gas-liquid two-phase separation due to changes in equivalent gravity. This invention enables the gas-liquid separator for aircraft refrigeration systems to achieve good gas-liquid separation even under varying equivalent gravity, free from overload and attitude limitations. The invention includes a gas-liquid two-phase inlet 1, a gas phase outlet 2, a gas-liquid separation baffle 3, a cylinder 4, a spiral coil 5, a leakage hole 6, a fixed liquid outlet pipe 7, a rotating mechanism 8, and a movable liquid outlet pipe 9. The upper part of the cylinder 4 is provided with a gas-liquid two-phase inlet 1 and a gas phase outlet 2. A spiral coil 5 is located in the middle of the cylinder 4, with its upper end connected to the gas-liquid two-phase inlet 1. A leakage hole 6 for discharging the liquid phase is opened on the outer wall of the spiral coil 5. An opening is provided at the tail of the spiral coil 5, with the outlet direction parallel to the tangential direction of the cylinder 4, ensuring that the gas and liquid phases continue to rotate and flow tangentially along the cylinder 4 without perpendicularly impacting the cylinder. A gas-liquid separation baffle 3 is provided at the lower end of the gas phase outlet 2 to prevent the liquid phase from flowing out of the gas phase outlet. A fixed liquid outlet pipe 7 is located in the middle of the cylinder 4, and a rotating mechanism 8 is arranged on the fixed liquid outlet pipe 7. The rotating mechanism 8 is connected to a movable liquid outlet pipe 9, which can rotate freely 360°. This invention can achieve gas-liquid separation under varying overload and attitude conditions.
[0004] Preferably, the leakage holes 6 are evenly distributed on the outer middle side wall of the spiral coil 5, with the holes opened horizontally or at a certain angle to the fixed outlet pipe 7.
[0005] The beneficial effects of this invention are: it can achieve gas-liquid two-phase separation without being affected by equivalent gravity, avoid the decrease in refrigeration performance caused by the mixing and flow of refrigerant gas and liquid, and improve the stability and adaptability of the airborne refrigeration system. Attached Figure Description
[0006] 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.
[0007] Figure 1 This is a structural diagram of a gas-liquid separator for an airborne refrigeration system, which is a preferred embodiment of this utility model.
[0008] Figure 2 This is a top view of the gas-liquid separator according to a preferred embodiment of the present invention.
[0009] Figure 3 This is a structural diagram of the gas-liquid separator in an inverted state, which is a preferred embodiment of this utility model.
[0010] Figure 4 This is a structural diagram of a gas-liquid separator for an airborne refrigeration system, which is a preferred embodiment of the present invention.
[0011] In the diagram: 1. Gas-liquid two-phase inlet; 2. Gas phase outlet; 3. Gas-liquid separation baffle; 4. Cylinder; 5. Spiral coil; 6. Leakage hole; 7. Fixed outlet pipe; 8. Rotating mechanism; 9. Movable outlet pipe. Detailed Implementation
[0012] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but should not be construed as limiting the scope of the present invention. Figure 1 This is a structural diagram of a gas-liquid separator for an airborne refrigeration system, representing a preferred embodiment of this utility model. Figure 1As shown, a gas-liquid separator for an airborne refrigeration system according to this embodiment includes a gas-liquid two-phase inlet 1, a gas phase outlet 2, a gas-liquid separation baffle 3, a cylinder 4, a spiral coil 5, a leakage hole 6, a fixed liquid outlet pipe 7, a rotating mechanism 8, and a movable liquid outlet pipe 9. In actual operation, the gas-liquid two-phase flow enters the spiral coil 5 from the inlet 1 with a certain initial velocity and flows along the spiral coil 5, generating centrifugal force. Under the action of centrifugal force, the liquid phase with a higher relative density accumulates on the outer wall of the spiral coil 5, and then flows out through the horizontally oriented leakage hole 6 into the cylinder 4, where it generates a velocity component towards the fixed liquid outlet pipe 7 under the action of equivalent gravity. The movable liquid outlet pipe 9 rotates under the action of the rotating mechanism 8, ensuring that the suction port is below the liquid surface. The liquid is drawn into the movable liquid outlet pipe 9 and flows out from the fixed liquid outlet pipe 7. Because of its low density and low centrifugal force, the gaseous fluid mainly flows out from the tail outlet of the spiral coil 5, gathers above the center of the cylinder 4, and flows out from the gas outlet 2 through the gap in the middle of the gas-liquid separation baffle 3.
[0013] like Figure 2 As shown, when the remaining two-phase flow exits from the tail of the spiral coil 5 with a certain initial velocity, since the outlet direction of the spiral coil 5 is parallel to the tangential direction of the cylinder 4, it will continue to rotate and flow along the tangential direction of the cylinder 4 without significantly impacting the cylinder and disrupting the flow direction. The remaining liquid phase fluid is thrown to the cylinder wall because the centrifugal force it experiences is much greater than that of the gas phase fluid. Under the combined action of equivalent gravity and centrifugal force, the gas phase and liquid phase fluids are further separated.
[0014] like Figure 3 As shown, when the equivalent gravity of the aircraft is in the opposite direction, the movable liquid outlet pipe 9 rotates under the action of the rotating structure 8, ensuring that the liquid inlet is below the liquid surface. The liquid fluid flowing out of the leakage hole 6 has only a horizontal initial velocity, and since the equivalent gravity acts in the opposite direction, the flow direction is towards the movable liquid outlet pipe 9. The gas-liquid separation baffle 3 separates the gas and liquid phases, preventing the liquid phase from entering the gas phase outlet 2, and also collects the separated liquid fluid, helping it flow out of the movable liquid outlet pipe; the gas phase fluid flows out of the gas phase outlet 2 through the gap in the middle of the gas-liquid separation baffle 3.
[0015] Figure 4This is a structural diagram of a gas-liquid separator for an airborne refrigeration system, representing a preferred embodiment of the present invention. The difference between Embodiment Two and Embodiment One is that the fixed liquid outlet pipe 7 is located at the bottom of the cylinder, and the leakage holes 6 are evenly distributed on the outside of the spiral coil 5 but at a certain angle towards the fixed liquid outlet pipe 7. When the equivalent gravity direction is opposite to the conventional gravity direction, due to the high velocity of the ejected liquid phase fluid and the certain angle of the nozzle, there is an initial velocity towards the fixed liquid outlet pipe 7, which is sufficient to resist the influence of the equivalent gravity, and the liquid still mainly flows out from the fixed liquid outlet pipe 7. This embodiment is mainly suitable for aircraft where the time of the opposite equivalent gravity direction is extremely short and the value is small, or where a certain reduction in refrigeration performance is acceptable for a certain period of time. The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.
Claims
1. A gas-liquid separator for an airborne refrigeration system, characterized in that, It includes a gas-liquid two-phase inlet (1), a gas phase outlet (2), a gas-liquid separation baffle (3), a cylinder (4), a spiral coil (5), a leakage hole (6), a fixed liquid outlet pipe (7), a rotating mechanism (8), and a movable liquid outlet pipe (9). The upper part of the cylinder (4) is provided with a gas-liquid two-phase inlet (1) and a gas phase outlet (2). The middle of the cylinder (4) is provided with a spiral coil (5). The upper end of the spiral coil (5) is connected to the gas-liquid two-phase inlet (1). A leakage hole (6) for discharging liquid phase is opened on the outer wall of the spiral coil (5). An opening is provided at the tail of the spiral coil (5). The outlet direction is parallel to the tangential direction of the cylinder (4). A gas-liquid separation baffle (3) is provided at the lower end of the gas phase outlet (2). The middle of the cylinder (4) is provided with a fixed liquid outlet pipe (7). A rotating mechanism (8) is arranged on the fixed liquid outlet pipe (7). The rotating mechanism (8) is connected to the movable liquid outlet pipe (9).
2. A gas-liquid separator for an airborne refrigeration system according to claim 1, characterized in that, Leakage holes (6) are evenly distributed on the outer and middle side walls of the spiral coil (5), with the openings horizontally or at a certain angle to the fixed outlet pipe (7).