An apparatus for improving the refrigerant gas-liquid boundary in a refrigeration system

Abstract

This utility model discloses a device for improving the boundary between the gas and liquid phases of refrigerant in a refrigeration system, belonging to the field of refrigeration system technology. Addressing the problem of insufficient separation of the gas and liquid two-phase refrigerant in existing technologies, this device achieves efficient gas-liquid phase separation through a segmented gradient design of spiral baffles inside the refrigerant pipe: the initial section uses a dense arrangement of 6 turns / 10cm to enhance centrifugal force, ensuring the highly liquid refrigerant adheres tightly to the pipe wall for heat exchange; the middle section (4 turns / 10cm) and the final section (2 turns / 10cm) gradually become less dense, matching the refrigerant vaporization process and reducing flow resistance. A cover plate is added to the lower half of the refrigerant outlet to form a physical barrier, forcibly intercepting the backflow of insufficiently vaporized liquid refrigerant and preventing liquid slugging into the compressor. The multi-layer finned structure on the outer wall of the refrigerant pipe significantly increases the heat dissipation area, accelerating the heat absorption and phase change transformation of the liquid refrigerant inside the pipe.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration system technology, specifically relating to a device for improving the boundary between the gas phase and liquid phase of refrigerant in a refrigeration system. Background Technology

[0002] Refrigerant is a crucial substance in refrigeration systems. It absorbs heat in the evaporator, cooling the surrounding environment, and releases heat in the condenser, completing heat transfer. Refrigerants possess characteristics such as low boiling points and high thermal stability; common examples include Freon and ammonia. Their selection requires consideration of factors such as cooling performance, environmental friendliness, and safety. Refrigerants are indispensable "heat transfer agents" in refrigeration equipment, widely used in air conditioners, refrigerators, and other devices, helping people enjoy comfortable low-temperature environments.

[0003] During the refrigeration process, refrigerant undergoes a gas-liquid phase transition. This two-phase refrigerant cannot fully realize its heat exchange potential in the radiator and can also affect the compression process in the compressor, leading to liquid slugging. Currently, there is no technology that can separate the gas-liquid two-phase refrigerant using a simple device.

[0004] This invention aims to solve or at least alleviate the problem of insufficient gas-liquid refrigerant separation by providing a device that improves the boundary between the gas and liquid phases of the refrigerant in a refrigeration system. Utility Model Content

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a device for improving the boundary between the gas phase and liquid phase of the refrigerant in a refrigeration system, which has the advantage of enabling sufficient separation of the gas and liquid phases of the refrigerant.

[0006] To achieve the above objectives, this utility model provides a device for improving the boundary between the gaseous and liquid phases of a refrigerant in a refrigeration system, comprising: a refrigerant pipe, wherein a spiral baffle is provided inside the refrigerant pipe.

[0007] As a further improvement of this utility model, the spiral baffle distribution density of the front section of the refrigerant pipe is 6 turns / 10cm, the spiral baffle distribution density of the middle section of the refrigerant pipe is 4 turns / 10cm, and the spiral baffle distribution density of the rear section of the refrigerant pipe is 2 turns / 10cm.

[0008] As a further improvement of this utility model, a cover plate is provided at the refrigerant outlet, and the cover plate closes the lower half of the refrigerant outlet area.

[0009] As a further improvement of this utility model, the refrigerant pipe is provided with fins on the outside, and the fins are provided with multiple layers.

[0010] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0011] This device achieves efficient gas-liquid phase separation through a segmented gradient design of spiral baffles within the refrigerant pipe: the initial section uses a dense arrangement of 6 turns / 10cm to enhance centrifugal force, ensuring the highly liquid refrigerant adheres tightly to the pipe wall for heat exchange; the middle section (4 turns / 10cm) and the final section (2 turns / 10cm) gradually thin out, matching the refrigerant vaporization process and reducing flow resistance. A cover plate is added to the lower half of the refrigerant outlet to form a physical barrier, forcibly intercepting the backflow of insufficiently vaporized liquid refrigerant and preventing liquid slugging into the compressor. The multi-layer finned structure on the outer wall of the refrigerant pipe significantly increases the heat dissipation area, accelerating the heat absorption and phase change transformation of the liquid refrigerant inside the pipe. The three structural components work synergistically—the spiral baffles achieve dynamic gas-liquid separation, the outlet cover plate provides secondary heat exchange assurance, and the multi-layer fins enhance heat exchange efficiency—systematically improving the refrigerant phase boundary from three dimensions: flow channel optimization, phase control, and heat dissipation enhancement, ultimately improving the heat exchange efficiency and operational reliability of the refrigeration system. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a device for improving the boundary between the gaseous and liquid phases of refrigerant in a refrigeration system, according to the present invention.

[0013] Figure 2 This is a schematic diagram of the structure at point A of this utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the refrigerant pipe of this utility model.

[0015] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0016] 1. Refrigerant inlet; 2. Refrigerant outlet; 3. Refrigerant pipe; 4. Fins; 5. Cover plate;

[0017] Spiral baffle 6. Detailed Implementation

[0018] 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.

[0019] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0020] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0021] In the embodiments, by Figure 1-3 Give, Figure 1 This is a schematic diagram of a device for improving the boundary between the gas phase and liquid phase of a refrigerant in a refrigeration system according to the present invention. It can be seen that multiple layers of fins 4 are provided on the outside of the refrigerant pipe 3.

[0022] Figure 2 This is a schematic diagram of the structure at point A of this utility model. It can be seen that the lower half of the refrigerant outlet 2 is provided with a cover plate 5.

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the refrigerant pipe of this utility model, in which the distribution of the spiral baffles 6 of the front, middle and rear sections of the refrigerant pipe 3 is shown from top to bottom.

[0024] A device for improving the boundary between the gaseous and liquid phases of a refrigerant in a refrigeration system includes: a refrigerant pipe 3, wherein a spiral baffle 6 is disposed inside the refrigerant pipe 3.

[0025] When the refrigerant enters the refrigerant pipe 3 from the refrigerant inlet 1, it first comes into contact with the spiral baffle 6. Under the action of the spiral baffle 6, the refrigerant flows in a spiral shape. At this time, under the action of centrifugal force, the liquid refrigerant and the gaseous refrigerant separate. The liquid refrigerant fully contacts the inner wall of the refrigerant pipe 3, avoiding poor heat transfer caused by the influence of the gaseous refrigerant. After sufficient heat exchange, the liquid refrigerant is converted into gaseous refrigerant and discharged from the refrigerant outlet 2.

[0026] In a preferred embodiment of this invention, the spiral baffles 6 at the front section of the refrigerant pipe 3 have a distribution density of 6 turns / 10cm, the spiral baffles 6 at the middle section of the refrigerant pipe 3 have a distribution density of 4 turns / 10cm, and the spiral baffles 6 at the rear section of the refrigerant pipe 3 have a distribution density of 2 turns / 10cm. The distribution density of the spiral baffles 6 is rationally set because the front section of the refrigerant pipe 3 contains more liquid refrigerant, thus requiring stronger centrifugal force to ensure contact between the liquid refrigerant and the inner wall of the refrigerant pipe 3. A denser distribution of the spiral baffles 6 allows for sufficient centrifugal force during flow without interference from the gaseous refrigerant. As the refrigerant flows through the middle section, some of the liquid refrigerant undergoes heat exchange, converting to a gaseous state, and this is even more pronounced in the rear section. Therefore, the distribution of the spiral baffles 6 gradually becomes sparser to reduce material consumption and facilitate refrigerant discharge.

[0027] In a preferred embodiment of this invention, a cover plate 5 is provided at the refrigerant outlet 2, which closes the lower half of the refrigerant outlet 2. To prevent liquid refrigerant from entering the compressor in a liquid state due to insufficient heat exchange and affecting the compression process, a cover plate 5 is provided at the refrigerant outlet 2 to block the liquid refrigerant from escaping, allowing it to continue heat exchange within the refrigerant pipe 3.

[0028] In a preferred embodiment of this invention, the refrigerant pipe 3 is provided with fins 4 on its exterior, and the fins 4 are provided with multiple layers. Providing multiple layers of fins increases the contact area between the refrigerant pipe 3 and the outside environment, thereby enhancing heat exchange efficiency.

[0029] In summary, this device achieves efficient gas-liquid phase separation through a segmented gradient design of spiral baffles within the refrigerant pipe: the initial section uses a dense arrangement of 6 turns / 10cm to enhance centrifugal force, ensuring the highly liquid refrigerant adheres tightly to the pipe wall for heat exchange; the middle section (4 turns / 10cm) and the final section (2 turns / 10cm) gradually become sparser, matching the refrigerant vaporization process and reducing flow resistance. A cover plate is added to the lower half of the refrigerant outlet to form a physical barrier, forcibly intercepting the backflow of insufficiently vaporized liquid refrigerant and preventing liquid slugging into the compressor. The multi-layered finned structure on the outer wall of the refrigerant pipe significantly increases the heat dissipation area, accelerating the heat absorption and phase change transformation of the liquid refrigerant inside the pipe. The synergistic effect of these three structural components—the spiral baffles achieving dynamic gas-liquid separation, the outlet cover plate providing secondary heat exchange assurance, and the multi-layered fins enhancing heat exchange efficiency—systematically improves the refrigerant phase boundary from three dimensions: flow channel optimization, phase control, and heat dissipation enhancement, ultimately improving the heat exchange efficiency and operational reliability of the refrigeration system.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for improving the boundary between the gaseous and liquid phases of a refrigerant in a refrigeration system, characterized in that, include: Refrigerant pipe (3), and a spiral baffle (6) is provided inside the refrigerant pipe (3); The spiral baffle (6) at the front of the refrigerant pipe (3) has a distribution density of 6 turns / 10cm, the spiral baffle (6) at the middle section of the refrigerant pipe (3) has a distribution density of 4 turns / 10cm, and the spiral baffle (6) at the rear section of the refrigerant pipe (3) has a distribution density of 2 turns / 10cm. The refrigerant pipe (3) has a cover plate (5) at the refrigerant outlet (2), which closes the lower half of the refrigerant outlet (2). The refrigerant pipe (3) is provided with fins (4) on the outside, and the fins (4) are provided with multiple layers.

Images