Multi-runner flow-equalizing heat exchange device with frame structure

Abstract

The invention discloses a multi-runner flow-equalizing heat exchange device with a frame structure. An air inlet sealing cover (2) is arranged at a cold edge inlet of a cold edge heat exchange channel (22) of the core body assembly (1), and a baffling sealing cover (6) is arranged at a cold edge outlet; an air inlet A (3), an air inlet B (4) and an air inlet C (5) are distributed on the air inlet sealing cover (2) and are all communicated with a cold edge inlet of the core body assembly (1); a cavity formed between a cold edge outlet of the core assembly (1) and the baffling sealing cover (6) is divided into a cold edge outlet cavity A (7) and a cold edge outlet cavity B (8) which are used for forced convection and flow equalization of fluid through a separation assembly. According to the invention, air of incoming flows of different subsystems can be used for carrying out centralized heat dissipation on the cooling liquid in the equipment compartment.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, and in particular to a frame structure multi-channel flow equalization heat exchange device. Background Technology

[0002] Currently, most air-liquid heat exchangers used in the aviation field adopt a single-channel design for air inlet and outlet, and the onboard piping is relatively dispersed. The air cold sources flowing from different areas are also dispersed, and the heat dissipation capacity is relatively limited. If multiple air cold sources are collected, different heat exchangers need to be designed for heat exchange. The overall system design is relatively redundant and cannot meet the heat exchange requirements of compact layout in multiple spaces on the aircraft. Summary of the Invention

[0003] The purpose of this invention is to provide a frame-structured multi-channel flow-equalizing heat exchange device. This invention enables centralized heat dissipation from air flowing from different subsystems to the coolant in the equipment compartment.

[0004] Technical Solution. A frame structure multi-channel heat exchange device includes a core assembly. The cold edge heat exchange channel of the core assembly is provided with an air inlet cover at the cold edge inlet and a baffle cover at the cold edge outlet. The air inlet cover is provided with air inlets A, B, and C, and air inlets A, B, and C are all connected to the cold edge inlet of the core assembly. The cavity formed between the cold edge outlet of the core assembly and the baffle cover is divided by a partition component into a cold edge outlet cavity A and a cold edge outlet cavity B for forced convection and flow equalization of fluid.

[0005] In the aforementioned multi-channel heat exchanger with frame structure, the flow area ratio of the two cold-side heat exchange channels corresponding to the cold-side outlet ports A and B, which are separated by the partition component, is positively correlated with the flow distribution of the inlets A, B, and C.

[0006] In the aforementioned frame structure multi-channel heat exchange device, the partition component includes: a flow divider seal disposed at the cold edge outlet of the core component and a flow divider plate disposed within the baffle cover; the flow divider seal includes a positioning edge strip with partition teeth on it; the top of the flow divider plate is provided with a positioning groove; the positioning edge strip is inserted into the positioning groove for engagement, and the partition teeth are inserted into the cold edge fins in the cold edge heat exchange channel of the core component.

[0007] In the aforementioned frame structure multi-channel heat exchanger, the depth to which the partition teeth are inserted into the cold edge fins is 25mm.

[0008] In the aforementioned frame structure multi-channel heat exchanger, the mating depth between the positioning edge strip and the positioning groove is 3mm.

[0009] In the aforementioned frame structure multi-channel heat exchange device, the side walls of the cold side outlet chambers A and B are each provided with an air outlet channel, and the outlet area of ​​the air outlet channel is larger than the cold side outlet area of ​​the core component located at the corresponding cold side outlet chamber position.

[0010] In the aforementioned frame structure multi-channel heat exchange device, the core assembly forms a baffled heat exchange channel through hot-side fins.

[0011] In the aforementioned frame structure multi-channel heat exchanger, the hot-side inlet and hot-side outlet of the hot-side heat exchange channel are arranged on the same side.

[0012] In the aforementioned frame structure multi-channel heat exchanger, reinforcing ribs are distributed on the inner walls of both the air inlet cover and the baffle cover.

[0013] Beneficial effects: This invention introduces incoming air from different directions into the cold side heat exchange channel of the core assembly by distributing air inlets A, B, and C on the air inlet cover, and achieves forced convection and uniform flow of fluid through the cold side outlets A and B separated by the partition component.

[0014] This invention solves the technical bottleneck of arranging multiple air inlet and outlet ports on the same side, breaks through the conventional structure of arranging two air inlets and outlets on opposite sides or on the same side in traditional air-liquid heat exchangers, provides a solution for the arrangement of multiple spaces and multiple flow channels on the aircraft, and provides ideas for the subsequent compact design of the system.

[0015] By setting up a separator component, this invention structurally divides the single-flow air structure into two independent heat exchange units, thus avoiding insufficient heat exchange caused by uneven gas distribution in each air inlet.

[0016] The present invention arranges the separator component in the direction of the cold edge outlet of the core component (the direction of airflow out), and inserts the separator teeth into the cold edge fins by 25mm; this structure serves to divert airflow on the one hand, and reduces the weight increase caused by penetrating the core during assembly on the other hand.

[0017] In summary, this invention, based on the aircraft's air intake duct layout requirements, achieves a uniform flow heat exchange arrangement with multiple air intakes (three intake ports A, B, and C) and multiple air outlets (two cold-side outlet ports A and B). To ensure the uniformity of airflow from different channels, partition components are installed at corresponding positions in the core assembly to achieve forced convection of the fluid, avoiding reduced heat exchange efficiency caused by uneven flow. By setting outlet channels on both sides of the baffle cover, the gas is ensured to flow uniformly to the outlet ports on both sides, achieving sufficient heat exchange while meeting the different installation interface requirements on the aircraft. Simultaneously, this structure can centrally dissipate heat from the airflow from different subsystems to the equipment compartment coolant. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Top view; Figure 3 This is a structural schematic diagram of the core component; Figure 4 This is the main view of the core assembly; Figure 5 yes Figure 4 Top view, Figure 5 The image only shows one set of cold-side fins within the cold-side heat exchange channel; Figure 6 yes Figure 5 AA section view; Figure 7 yes Figure 5 BB sectional view, Figure 7 In the diagram, only one side of the hot edge fins is shown within the hot edge heat exchange channel; the other side can be symmetrically arranged. Figure 8 This is a schematic diagram of the air intake cover structure; Figure 9 This is a schematic diagram of the baffle seal structure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0021] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Example 1. A frame structure multi-channel flow equalization heat exchanger, see [link to example]. Figure 1-9The system includes a core assembly 1. The cold edge heat exchange channel 22 of the core assembly 1 has an air inlet cover 2 at its cold edge inlet and a baffle cover 6 at its cold edge outlet. The air inlet cover 2 has an air inlet A3, an air inlet B4, and an air inlet C5 distributed on it. The air inlets A, B, and C are all connected to the cold edge inlet of the core assembly 1. The cavity formed between the cold edge outlet of the core assembly 1 and the baffle cover 6 is divided by a partition component into a cold edge outlet cavity A7 and a cold edge outlet cavity B8 for forced convection and flow equalization of fluid.

[0023] The flow area ratio of the two cold-side heat exchange channels 22, which are separated by the partition component and correspond to the cold-side outlets A and B, is positively correlated with the flow distribution of the inlets A, B, and C.

[0024] The aforementioned dividing components include: a diversion seal 11 disposed at the cold edge outlet of the core assembly 1 and a diversion plate 12 disposed within the baffle cover 6; the diversion seal 11 includes a positioning edge 13, on which a dividing tooth 14 is provided; the top of the diversion plate 12 is provided with a positioning groove 15; the positioning edge 13 is inserted into the positioning groove 15 for engagement, and the dividing tooth 14 is inserted into the cold edge fins 16 within the cold edge heat exchange channel of the core assembly 1.

[0025] The aforementioned separator teeth 14 are inserted into the cold edge fins 16 to a depth of 25mm. This improves the rigidity of the core assembly and serves to support it, while also reducing the weight increase caused by the separator teeth 14 penetrating the core assembly.

[0026] The aforementioned positioning edge strip 13 and positioning groove 15 have a mating depth of 3mm.

[0027] The aforementioned cold-side outlet chambers A and B each have an air outlet channel 17 on their sidewalls. The outlet area of ​​the air outlet channel 17 is larger than the cold-side outlet area of ​​the core component 1 located at the corresponding cold-side outlet chamber position. Both cold-side outlet chambers A and B are connected to outlets A9 and B10 via the air outlet channel 17. A ladder-shaped air outlet channel 17 is provided on both sides of the baffle seal, ensuring the strength requirements of the baffle seal while providing space for fluid flow.

[0028] The aforementioned core assembly 1 forms a baffled heat exchange channel 23 through the hot edge fins 18.

[0029] The aforementioned hot-side heat exchange channel has its hot-side inlet 19 and hot-side outlet 20 arranged on the same side.

[0030] The inner walls of the aforementioned air intake cover 2 and deflector cover 6 are both equipped with reinforcing ribs 21. To ensure the strength of the air intake cover and deflector cover, grid-like reinforcing ribs are designed on the air intake cover and deflector cover respectively to meet the requirements of machine installation and product reliability.

[0031] Working steps: Coolant (lubricating oil) enters the hot side heat exchange channel 23 through the hot side inlet 19 for heat exchange and cooling, and then flows out through the hot side outlet 20; incoming air from different directions on the machine enters the cold side heat exchange channel 22 through the air inlets A, B, and C, and flows out through the cold side outlets A and B for equalization before flowing out through the outlets A9 and B10.

[0032] This invention designs a frame structure multi-channel uniform flow heat exchange device. Based on the onboard piping layout, the air from different subsystems is used to centrally dissipate heat from the coolant in the equipment compartment. This solves the problem of uniform flow heat exchange in multi-channel air intake and multi-channel air exhaust on the aircraft. At the same time, to ensure the uniformity of air flow from different channels, flow divider seals are installed at corresponding positions on the core component to achieve forced convection of the fluid and avoid the reduction in heat exchange efficiency caused by uneven flow. By setting trapezoidal opening channels in the baffle seal, the requirements for sufficient heat exchange and uniform flow in the airborne environment are met.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A frame-structured multi-channel heat exchanger, characterized in that, The core assembly (1) includes an air inlet cover (2) at the cold edge inlet of the cold edge heat exchange channel (22) of the core assembly (1) and a baffle cover (6) at the cold edge outlet. The air inlet cover (2) has an air inlet A (3), an air inlet B (4), and an air inlet C (5), and the air inlets A, B, and C are all connected to the cold edge inlet of the core assembly (1). The cavity formed between the cold edge outlet of the core assembly (1) and the baffle cover (6) is divided by a partition component into a cold edge outlet cavity A (7) and a cold edge outlet cavity B (8) for forced convection and flow equalization of fluid.

2. The frame structure multi-channel heat exchange device according to claim 1, characterized in that, The flow area ratio of the two cold-side heat exchange channels (22) divided by the partition component and corresponding to the cold-side outlet mouth A and B is positively correlated with the flow distribution of the inlet A, B and C.

3. The frame structure multi-channel heat exchange device according to claim 1, characterized in that, The separation component includes: a diversion seal (11) disposed at the cold edge outlet of the core assembly (1) and a diversion plate (12) disposed in the baffle cover (6); the diversion seal (11) includes a positioning edge strip (13), and the positioning edge strip (13) is provided with a separation tooth (14); the top of the diversion plate (12) is provided with a positioning groove (15); the positioning edge strip (13) is inserted into the positioning groove (15) for cooperation, and the separation tooth (14) is inserted into the cold edge fin (16) in the cold edge heat exchange channel of the core assembly (1).

4. The frame structure multi-channel heat exchanger according to claim 3, characterized in that, The depth to which the separator tooth (14) is inserted into the cold edge fin (16) is 25 mm.

5. The frame structure multi-channel heat exchange device according to claim 3, characterized in that, The mating depth between the positioning edge strip (13) and the positioning groove (15) is 3mm.

6. The frame structure multi-channel heat exchange device according to claim 1, characterized in that, The side walls of cold edge outlet mouths A and B are provided with air outlet channels (17), and the outlet area of ​​the air outlet channel (17) is larger than the cold edge outlet area of ​​the core component (1) located at the corresponding cold edge outlet mouth position.

7. The frame structure multi-channel heat exchanger according to claim 1, characterized in that, The core assembly (1) forms a baffled heat exchange channel (23) through the hot edge fins (18).

8. The frame structure multi-channel heat exchanger according to claim 7, characterized in that, The hot-side inlet (19) and hot-side outlet (20) of the hot-side heat exchange channel are arranged on the same side.

9. The frame structure multi-channel heat exchanger according to claim 1, characterized in that, The inner walls of the air intake cover (2) and the deflector cover (6) are both reinforced with ribs (21).

Images