Annular radiator

Abstract

The utility model discloses an annular radiator which comprises an inner cylinder and a corrugated plate, the inner cylinder is cylindrical, and the inner cylindrical surface of the inner cylinder forms a refrigerant flow channel communicated with a refrigerant medium; a corrugated plate formed by stretching along an arc is connected to the outer cylindrical surface of the inner cylinder by taking one waveform as a cross section or taking a plurality of waveforms as cross sections, and an independent heating medium runner is formed between each waveform cross section and the outer cylindrical surface of the inner cylinder; and punching point pits which are sunken towards the outer cylindrical surface of the inner cylinder are processed on at least one part of the surface of the corrugated plate. The heat exchange efficiency of the annular radiator can be improved on the premise that the weight of the annular radiator is not increased, the machining mode is simple and feasible, and the mode of adjusting the heat exchange efficiency is flexible.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation heat exchangers, in particular to an annular radiator and a heat exchange corrugated plate structure thereof with high heat exchange efficiency, low weight and low processing cost. Background Art

[0002] With the continuous development of fighter aircraft technology, the aircraft environmental control system has higher and higher requirements for the heat exchange efficiency of the annular radiator. The traditional method to improve the efficiency of the annular radiator is mainly to reduce the pitch of the corrugated plate and increase the height of the corrugated plate to obtain a larger heat exchange area, thereby improving the heat exchange efficiency. However, the problem with this solution is that as the pitch of the corrugated plate decreases and the corrugated plate increases, the weight of the entire heat exchanger product also increases accordingly, and weight control is crucial for fighter aircraft. Therefore, a new solution is needed to improve the efficiency of the annular radiator. Summary of the invention

[0003] In view of the problems existing in the background technology, the utility model aims to provide an annular radiator, which improves the heat exchange efficiency of the annular radiator without increasing the weight of the annular radiator, and the processing method is simple and feasible, and the method of adjusting the heat exchange efficiency is flexible.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] Ring radiator, comprising:

[0006] The inner cylinder is cylindrical, and the inner cylindrical surface of the inner cylinder forms a refrigerant flow channel connected with the refrigerant medium;

[0007] Corrugated plate, the corrugated plate is an integrated structure or a split structure;

[0008] When the corrugated plate is an integrated structure, a plurality of waveforms are used as cross-sections and are stretched along the same arc line to form a corrugated plate, the corrugated plate is integrally connected to the outer cylindrical surface of the inner cylinder, an independent heat medium flow channel is formed between each waveform cross-section on the corrugated plate and the outer cylindrical surface of the inner cylinder, and at least a portion of the surface of the corrugated plate is processed with punching point pits that are concave toward the outer cylindrical surface of the inner cylinder;

[0009] When the corrugated plate is a split structure, a corrugated plate is formed by stretching along an arc line with a waveform as the cross-section, and multiple corrugated plates are sequentially connected to the outer cylindrical surface of the inner cylinder along the axis direction of the inner cylinder. The center of the arc line corresponding to each corrugated plate for stretching is located on the axis of the outer cylindrical surface of the inner cylinder. An independent heat medium flow channel is formed between each corrugated plate and the outer cylindrical surface of the inner cylinder, and at least a part of the corrugated plate has a punching point pit recessed toward the outer cylindrical surface of the inner cylinder on the surface.

[0010] Furthermore, the annular radiator further comprises:

[0011] A liquid collecting cover, wherein the liquid collecting cover has two parts, one of which is connected to the inlet of the heat medium flow channel formed by all the corrugated plates, and the other is connected to the outlet of the heat medium flow channel formed by all the corrugated plates;

[0012] There are two nozzles, which are respectively arranged on two liquid collecting covers, so that the liquid collecting covers are connected with the hot fluid channel in the environmental control system through the nozzles to form a circulation.

[0013] Furthermore, the annular radiator further comprises:

[0014] The mounting bracket is arranged on the outer cylindrical surfaces corresponding to the two axial ends of the inner cylinder.

[0015] As an option, the punch point pit is located between the crest and the trough of the corresponding wave section of the corrugated plate.

[0016] As an option, the impact point dimples are spherical dimples.

[0017] As an option, when the corrugated plate is a split structure, the sizes of the punching point pits at different positions on the same corrugated plate are different, and the spacing between adjacent punching point pits is not completely equal.

[0018] As an option, when the corrugated plate is a split structure, the sizes of the punching point pits on different corrugated plates are different, and the spacing between adjacent punching point pits is also different.

[0019] As an option, when the corrugated plate is a split structure, different corrugated plates have different numbers of punching pits.

[0020] As an option, when the corrugated plate is a split structure, different corrugated plates have different wave cross-sectional dimensions and different thickness dimensions.

[0021] As an option, the corrugated plate is connected to the outer cylindrical surface of the inner tube by resistance welding.

[0022] Compared with the prior art, the heat exchange area of ​​the annular radiator of the utility model is improved, and the turbulence effect of the fluid on the hot side of the annular radiator is increased, and it has the following characteristics:

[0023] (1) The corrugated plate of the annular radiator can be punched to produce a corrugated plate with punching pits. After the corrugated plate is punched, the radiator area can be increased, and the turbulence of the hot fluid in the corrugated plate can be increased, thereby improving the heat exchange efficiency of the annular radiator without affecting the overall weight of the annular radiator. The punching process is simple and easy to operate;

[0024] (2) The corrugated plate can adopt an integral structure (corrugated plate formed by integral stamping, a single corrugated plate contains multiple corrugated sections) or a split structure (i.e. a corrugated plate corresponds to only one corrugated section). When the corrugated plate is an integral structure, the heat transfer efficiency can be adjusted by changing the number, size and distribution spacing of the punching point pits in different areas of the corrugated plate; when the corrugated plate is a plurality of independent split-structure corrugated plates, each corrugated plate only includes one corrugated section and one thickness, which is convenient for processing corrugated plates with different thicknesses, different numbers of punching point pits, sizes of punching point pits and spacing between punching point pits, and then combining them to form a heat medium flow channel to adjust the heat transfer efficiency; (3) When the corrugated plate is a plurality of independent split-structure corrugated plates, it is convenient to adjust the heat transfer efficiency of the corrugated plates at different positions on the outer cylindrical surface of the inner tube according to the simulation or test results, and replace different For a type of corrugated plate, the thickness, cross-sectional dimensions, number, size and spacing of the punching point pits at that position are adjusted to ensure that the heat exchange efficiency is improved without increasing the weight. For example, if the heat exchange efficiency needs to be improved in a certain area, the number of punching point pits can be increased and the spacing of the punching point pits can be reduced on the corrugated plate in that area, while the punching point pits are not processed on the surface of the corrugated plate in other areas, or the waveform cross-section can be increased and the thickness of the corrugated plate can be reduced while ensuring the strength. Therefore, the adjustable range can be increased by increasing the number of adjustable parameters (number of punching point pits, size of punching point pits, spacing of punching point pits). BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the annular radiator in the utility model;

[0026] Figure 2 It is a schematic diagram of the structure of the annular radiator corrugated plate without punching point pits;

[0027] Figure 3 It is a schematic diagram of the structure of the corrugated plate with punching point pits in the utility model;

[0028] In the figure: 1-liquid collecting cover; 2-mounting bracket; 3-nozzle; 4-corrugated plate; 5-inner cylinder. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0030] like Figure 1As shown, the annular radiator in this embodiment is mainly composed of a liquid collecting cover 1, a mounting bracket 2, a nozzle 3, a corrugated plate with punched pits 4 and an inner cylinder 5. The three parts of the corrugated plate with punched pits 4, the mounting bracket 2 and the liquid collecting cover 1 are welded to the cylinder 5 by resistance welding; the nozzle 3 is welded to the liquid collecting cover 1 by argon arc welding; the corrugated plate with punched pits 4 and the liquid collecting cover 1 are welded by argon arc welding.

[0031] like Figure 2 As shown, the cross section of the corrugated plate 4 is a single wave and there are no processing punching pits on the surface. Figure 3 The corrugated plate 4 has a single waveform in cross section and punched pits on the surface. The corrugated plate 4 is in an arc shape as a whole and has a waveform in cross section. Multiple corrugated plates 4 with punched pits on the surface are sequentially distributed along the axis direction of the inner cylinder 5 on the circumference of multiple parallel planes perpendicular to the central axis of the inner cylinder 5, forming multiple independent circumferential heat medium flow channels, and forming cross-flow heat exchange with the coolant flow channel formed by the inner cylindrical surface of the inner cylinder 5.

[0032] like Figure 3 As shown, the processed corrugated plate 4 is placed on a punching point fixed fixture, and then a punching point movable fixture is used to punch points between the trough and the crest of the cross-sectional waveform of the corrugated plate 4, so that the surface of the corrugated plate 4 is covered with regular or irregular pits, and the processing of the corrugated plate 4 with punching point pits is completed. The corrugated plate 4 with punching point pits is used to replace the traditional corrugated plate to process the annular radiator, and an annular radiator with higher heat exchange efficiency and unchanged weight can be obtained.

[0033] Working principle of the annular radiator: The annular radiator is connected to the fuselage structure through the mounting bracket 2, and the nozzle 3 is connected to the aircraft environmental control system. The hot fluid of the environmental control system enters the (inlet) liquid collecting cover 1 through the (inlet) nozzle 3. After the fluid is collected in the (inlet) liquid collecting cover 1, it is evenly distributed to the heat medium flow channels corresponding to each corrugated plate 4. The hot fluid exchanges heat with the large flow of cold air in the refrigerant flow channel formed by the inner cylindrical surface of the inner tube 5 in the flow channel. Finally, the cooled hot fluid enters the (outlet) liquid collecting cover 1 and is collected from the (outlet) nozzle 3 to flow into the next level of the environmental control system for use. This achieves the purpose of using the large flow of cold air from the inner tube 5 to cool the high-temperature hot fluid of the environmental control system.

[0034] The utility model achieves the purpose of increasing the efficiency of the annular radiator by punching pits of a specified depth on the outer surface of the corrugated plate 4 at a certain interval to increase the heat exchange area and increase the turbulence of the hot fluid. The advantage of the utility model is that it avoids the scheme of changing the wave height and wave distance of the corrugated plate 4, but processes the punching pits of different numbers, sizes and intervals on the corrugated plate 4 in different areas of the surface of the annular radiator according to the test or simulation results, which can flexibly adjust the heat exchange efficiency of different areas without changing the weight of the radiator.

[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. Ring radiator, characterized in that: include: An inner cylinder (5), wherein the inner cylinder (5) is cylindrical, and the inner cylindrical surface of the inner cylinder (5) forms a refrigerant flow channel connected to the refrigerant medium; A corrugated plate (4), wherein the corrugated plate (4) is an integral structure or a split structure; When the corrugated plate (4) is an integrated structure, a plurality of waveforms are used as cross sections and are stretched along the same arc line to form a piece of the corrugated plate (4), the corrugated plate (4) is integrally connected to the outer cylindrical surface of the inner cylinder (5), and an independent heat medium flow channel is formed between each waveform cross section on the corrugated plate (4) and the outer cylindrical surface of the inner cylinder (5), and at least a portion of the surface of the corrugated plate (4) is processed with a punching point pit that is recessed toward the outer cylindrical surface of the inner cylinder (5); When the corrugated plate (4) is a split structure, a corrugated plate (4) is formed by stretching along an arc line with a waveform as a cross section, and a plurality of corrugated plates (4) are sequentially connected to the outer cylindrical surface of the inner cylinder (5) along the axial direction of the inner cylinder (5), the center of the arc line corresponding to each corrugated plate (4) for stretching is located on the axis of the outer cylindrical surface of the inner cylinder (5), and an independent heat medium flow channel is formed between each corrugated plate (4) and the outer cylindrical surface of the inner cylinder (5), and at least a portion of the surface of the corrugated plate (4) is processed with a punching point pit that is recessed toward the outer cylindrical surface of the inner cylinder (5).

2. The annular radiator according to claim 1, characterized in that: Also includes: A liquid collecting cover (1), wherein the liquid collecting cover (1) has two parts, one of which is connected to the inlet of the heat medium flow channel formed by all the corrugated plates (4), and the other is connected to the outlet of the heat medium flow channel formed by all the corrugated plates (4); There are two nozzles (3), which are respectively arranged on two liquid collecting covers (1), so that the liquid collecting covers (1) are connected to the hot fluid channel in the environmental control system through the nozzles (3) to form a circulation.

3. The annular radiator according to claim 1, characterized in that: Also includes: A mounting bracket (2) is arranged on outer cylindrical surfaces corresponding to two axial ends of the inner cylinder (5).

4. The annular radiator according to claim 1, characterized in that: The punch point pit is located between the crest and the trough of the corresponding wave section of the corrugated plate (4).

5. The annular radiator according to claim 1, characterized in that: The impact point pit is a spherical pit.

6. The annular radiator according to claim 1, characterized in that: When the corrugated plate (4) is a split structure, the sizes of the punching point pits at different positions on the same corrugated plate (4) are different, and the spacing between adjacent punching point pits is not completely equal.

7. The annular radiator according to claim 1, characterized in that: When the corrugated plate (4) is a split structure, the sizes of the punching point pits on different corrugated plates (4) are different, and the spacing between adjacent punching point pits is also different.

8. The annular radiator according to claim 1, characterized in that: When the corrugated plate (4) is a split structure, different corrugated plates (4) have different numbers of punch point pits.

9. The annular radiator according to claim 1, characterized in that: When the corrugated plate (4) is a split structure, different corrugated plates (4) have different wave cross-sectional dimensions and different thickness dimensions.

10. The annular radiator according to claim 1, characterized in that: The corrugated plate (4) is connected to the outer cylindrical surface of the inner tube (5) by resistance welding.

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