A condenser that prevents liquid accumulation

Abstract

The utility model discloses a kind of condensers of preventing hydrops, condenser is the heat dissipation accessory of evaporation refrigeration cycle system, mainly by refrigerant liquid-collecting cover, refrigerant gas-collecting cover, cold edge import-export interface, core subassembly, conduit etc. For the condenser of refrigerant liquid-collecting cover, refrigerant gas-collecting cover, this hot side import-export is located above core subassembly, refrigerant liquefaction is deposited in the lower part of core subassembly under the action of gravity, resulting in the loss of heat exchange area, the heat exchange capacity of evaporation refrigeration cycle system drops, the refrigerant with dryness threatens downstream equipment operation. The utility model realizes the timely discharge of liquid refrigerant by the multi-process of refrigerant and the structure of conduit to discharge upward under the action of pressure after collecting liquid refrigerant, prevent hydrops.

Description

Technical Field

[0001] This utility model belongs to the technical field of evaporative refrigeration cycle heat dissipation systems in aviation, automobiles, air conditioning, etc., and in particular, it relates to a condenser with the refrigerant collection shroud located at the top. Background Technology

[0002] Condensers are essential cooling accessories in evaporative refrigeration cycle heat dissipation systems for aircraft, automobiles, and air conditioning, utilizing the latent heat of phase change of the refrigerant to provide high-power heat exchange capacity. For condensers where the refrigerant collection shroud is located above the core assembly, traditional designs often cause refrigerant to deposit under gravity, preventing it from draining from the core assembly and resulting in a loss of heat exchange area. Reduced heat exchange area may prevent the refrigerant from maintaining subcooling, threatening the normal operation of downstream equipment. To avoid this, it is necessary to design a condenser anti-liquidation structure that allows the liquid to maintain a certain degree of subcooling and be guided out by conduits. Summary of the Invention

[0003] In view of the problems existing in the background technology, the present invention aims to provide a condenser that prevents liquid accumulation, so as to realize the smooth discharge of liquid refrigerant, ensure the normal operation of the system, and solve the problem of refrigerant liquid accumulation in condensers such as refrigerant liquid collection hoods and refrigerant gas collection hoods where the hot edge inlet and outlet are located above the core assembly.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A condenser for preventing liquid accumulation, comprising: The core assembly includes multiple parallel and spaced refrigerant chambers (the refrigerant chambers are heat source chambers, and the spaces between adjacent refrigerant chambers are cold source chambers) formed by multiple fins spaced apart. A refrigerant inlet is provided above the refrigerant chamber, and a refrigerant outlet is provided below the refrigerant chamber. A refrigerant gas collection hood, which is a high-temperature gaseous refrigerant inlet structure, is located above the core assembly and is connected to the refrigerant inlet above the refrigerant cavity; A refrigerant collection hood, which is a subcooled refrigerant outlet structure, is located above the core assembly; The conduit is located at the side end of the core assembly, and the inlet end of the conduit is connected to the refrigerant outlet below the refrigerant chamber, and the outlet end of the conduit is connected to the refrigerant collection shroud. The partition seals are installed in at least two of the partition seals in each refrigerant chamber, thereby dividing the refrigerant chamber into a multi-flow structure from top to bottom, wherein the inlet of the first flow is the refrigerant inlet and the outlet of the last flow is the refrigerant outlet.

[0005] As one approach, the fins corresponding to each refrigerant cavity in the core assembly include flow guiding fins and heat dissipation fins, wherein the flow guiding fins are distributed at the positions where the refrigerant flow direction changes in the multi-flow structure of the refrigerant cavity, and the remaining positions are heat dissipation fins.

[0006] As one option, each of the refrigerant chambers is provided with two partition seals, which are arranged in a parallel and staggered manner from top to bottom so that the refrigerant forms three flows in the refrigerant chamber.

[0007] As one embodiment, the refrigerant chamber is a rectangular cavity, with the refrigerant inlet and refrigerant outlet respectively located at the vertices of one diagonal line of the rectangle.

[0008] As one option, a seal is also provided in the refrigerant chamber of the core assembly. The seal is arranged along the edge contour of the refrigerant chamber, and a refrigerant inlet and a refrigerant outlet are formed at the edge contour of the refrigerant chamber where no seal is provided.

[0009] In this invention, a refrigerant gas collection hood and a refrigerant liquid collection hood are located above the core assembly. A conduit connects the refrigerant outlet of the refrigerant chamber in the core assembly to the refrigerant liquid collection hood. The refrigerant chamber between the fins in the core assembly adopts a multi-pass design. The first pass is mainly for condensation, and the heat exchange area is designed according to the heat exchange requirements. Subsequent passes allow the liquefied refrigerant to have a certain degree of subcooling and accumulate, and then discharge it from the core assembly through a conduit to avoid it remaining inside the core assembly.

[0010] Compared with existing technologies, this invention achieves the flow arrangement and the design of a conduit on one side of the core assembly by using a refrigerant cavity partition seal between the fins, allowing the refrigerant to exit the core assembly. This invention also has the following features: 1) Multi-process design: The first process is mainly for condensation, and the subsequent processes allow the liquefied refrigerant to have a certain degree of subcooling and accumulate, and then discharge it through the conduit to the core assembly to avoid stagnation and liquid accumulation in the core assembly.

[0011] 2) For condensers with the refrigerant collection shroud on top, a conduit is designed to connect the refrigerant outlet of the refrigerant chamber of the core assembly to the refrigerant collection shroud to ensure smooth discharge of liquid refrigerant. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structural design for preventing liquid accumulation in the condenser in this utility model; In the diagram: 1. Conduit; 2. Fin; 3. Seal; 4. Partition seal; 5. Refrigerant gas collection hood; 6. Refrigerant liquid collection hood. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. Any modifications, substitutions and alterations made based on ordinary technical knowledge and conventional means in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0014] like Figure 1 As shown, this utility model discloses a condenser designed to prevent liquid accumulation, comprising a core assembly, a conduit 1, a seal 3, a partition seal 4, a refrigerant gas collection hood 5, and a refrigerant liquid collection hood 6, wherein: The conduit 1 connects the refrigerant outlet in the refrigerant chamber of the core assembly to the refrigerant collection shroud 6. The refrigerant outlet of the refrigerant chamber is located at the lower right of each refrigerant chamber in the core assembly. After the refrigerant condenses and liquefies, it accumulates at the bottom of the refrigerant chamber under the action of gravity, and is pushed upward through the conduit 1 by pressure into the refrigerant collection shroud 6 at the upper right. The core assembly has a plate-fin structure, achieved through the stacking of fins 2 ( Figure 1 The refrigerant chambers (perpendicular to the view plane) form a cold source chamber with spaced refrigerant chambers (the space between adjacent cold source chambers is a refrigerant chamber, i.e., a heat source chamber, thus realizing heat exchange between the cold and heat sources). The refrigerant in the refrigerant chambers exchanges heat with the cold source in the cold source chambers through fins 2 at their interface. Fins 2 are divided into flow-guiding fins and heat-dissipating fins according to their main functions. By arranging two partition seals 4 in the refrigerant chambers formed by two adjacent layers of fins 2, the refrigerant chambers are divided into three flow paths while preventing cross-flow short circuits between the flow paths. Figure 1 As shown by the middle arrow, the two partition seals 4 are arranged in parallel and staggered positions. The top horizontal arrow pointing to the right corresponds to the first process, the middle horizontal arrow pointing to the left corresponds to the second process, and the bottom horizontal arrow pointing to the right corresponds to the third process. In the first process, the refrigerant is in a gas-liquid mixed state, occupying most of the area; in the second process, the refrigerant is completely liquefied with a dryness of 0; and in the third process, the refrigerant is further cooled, exhibiting a certain degree of subcooling. Through this top-down three-process design, the liquid gathers in the third process under the influence of gravity and pressure head, and with a certain degree of subcooling, ensures the normal operation of the next stage equipment.

[0015] Seal 3 is the basic structure of the core assembly. It is arranged at the edge contour of the refrigerant cavity to prevent leakage of the working medium while forming the refrigerant inlet and refrigerant outlet.

[0016] The refrigerant gas collection hood 5 is a high-temperature gaseous refrigerant inlet structure, located at the upper left of the core assembly.

[0017] The refrigerant collection shroud 6 is a subcooled refrigerant outlet structure located on the upper right of the core assembly.

[0018] The condenser anti-liquidation structure design of this utility model includes a conduit 1, fins 2, a seal 3, a partition seal 4, a refrigerant gas collection hood 5, and a refrigerant liquid collection hood 6. Gaseous refrigerant enters the core assembly through the refrigerant gas collection hood 5, condenses after heat exchange with the cold source in the first process, and is further cooled and subcooled in subsequent processes. The refrigerant with a certain degree of subcooling accumulates below the core assembly under gravity and flows upward through the designed conduit 1 into the refrigerant liquid collection hood 6, thereby being discharged from the core assembly.

[0019] like Figure 1 As shown, the anti-liquidation condenser of this utility model mainly consists of a refrigerant liquid collection shroud 6, a refrigerant gas collection shroud 5, and cold-side inlet and outlet interfaces ( Figure 1 It consists of a core assembly and a conduit 1 (not shown in the diagram), wherein the core assembly is an aluminum plate-fin heat dissipation structure, and the remaining components are welded to the core assembly to form a condenser assembly.

[0020] The above description is merely one specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A condenser for preventing liquid accumulation, characterized in that, include: The core assembly includes multiple parallel and spaced refrigerant chambers formed by multiple fins (2) spaced apart, with a refrigerant inlet above the refrigerant chamber and a refrigerant outlet below the refrigerant chamber. The refrigerant gas collection hood (5) is a high-temperature gaseous refrigerant inlet structure, located above the core assembly and connected to the refrigerant inlet above the refrigerant cavity; Refrigerant collection hood (6), the refrigerant collection hood (6) is a subcooled refrigerant outlet structure, located above the core assembly; The conduit (1) is located at the side end of the core assembly, and the inlet end of the conduit (1) is connected to the refrigerant outlet below the refrigerant chamber, and the outlet end of the conduit (1) is connected to the refrigerant collection shroud (6). The partition seal (4) is installed in at least two of the partition seals (4) in each refrigerant chamber, thereby dividing the refrigerant chamber into a multi-flow structure from top to bottom, wherein the inlet of the first flow is the refrigerant inlet and the outlet of the last flow is the refrigerant outlet.

2. The condenser for preventing liquid accumulation according to claim 1, characterized in that: The fins (2) corresponding to each refrigerant cavity in the core assembly include flow guiding fins and heat dissipation fins. The flow guiding fins are distributed at the positions where the refrigerant flow direction changes in the multi-flow structure of the refrigerant cavity, and the remaining positions are heat dissipation fins.

3. A condenser for preventing liquid accumulation according to claim 1, characterized in that: Each of the refrigerant chambers is provided with two partition seals (4), which are arranged in parallel and staggered order from top to bottom so that the refrigerant forms three flows in the refrigerant chamber.

4. A condenser for preventing liquid accumulation according to claim 1, characterized in that: The refrigerant chamber is a rectangular cavity, with the refrigerant inlet and refrigerant outlet located at the vertices of one of the diagonals of the rectangle.

5. A condenser for preventing liquid accumulation according to claim 1, characterized in that: The refrigerant cavity of the core assembly is also provided with a seal (3), which is arranged along the edge contour of the refrigerant cavity, and a refrigerant inlet and a refrigerant outlet are formed at the edge contour of the refrigerant cavity where no seal (3) is arranged.

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