Low-flow-resistance compact radiator with air bypass tangential regulating valve

Abstract

The utility model discloses a low-flow-resistance compact radiator provided with an air bypass tangential regulating valve and used for an aircraft thermal management system. The low-flow-resistance compact radiator comprises a rigid whole formed by welding a radiating core assembly, a cold air outlet end cover assembly, a hot side end cover, a cold air inlet end cover assembly and a cold air bypass assembly. The heat dissipation core assembly and the cold air bypass assembly are arranged side by side. A tangential adjusting valve is integrated on the cold air inlet end cover assembly, a shell of the tangential adjusting valve is integrated on a streamline shell of the cold air inlet end cover assembly, and the stepping motor is detachably connected to the cold air inlet end cover assembly. According to the utility model, the cold air bypass flow resistance is reduced, the cold air outlet end cover assembly can bear the vibration resistance of the tangential regulating valve arranged on the cold air outlet end cover assembly, the compactness of the radiator is improved, the number of parts is reduced, and the requirement of miniaturization of the radiator is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft thermal management systems, and in particular relates to a low-flow-resistance compact radiator with an air bypass tangential regulating valve for use in an aircraft thermal management system. Background Art

[0002] The radiator is a cooling accessory for the aircraft thermal management system. The ram cold air introduced from outside the aircraft and the high-temperature thermal fluid exchange heat in the radiator to reach a certain temperature for use in the aircraft thermal management system. The high-temperature thermal fluid exchanges heat with the air to reach the required working temperature, ensuring that the aircraft thermal management system can achieve the heat exchange function requirements under different working conditions under different flight conditions. Due to the different flight altitudes and flight conditions of the aircraft, the heat exchange capacity requirements of the radiator are also different, in order to meet the functional performance requirements of the use of cold air and high-temperature thermal fluid.

[0003] In the prior art, for example, the utility model patent with the announcement number CN217198666U proposes a special-shaped air / liquid heat exchanger for an aircraft environmental control system, which is mainly composed of a special-shaped core assembly, a hot side end cover, an air inlet end cover assembly, an air outlet end cover assembly, an air cooling bypass assembly, a mounting seat and a tangential regulating valve. In order to obtain the heat exchange power and working temperature under different working conditions, the tangential regulating valve is driven by an asynchronous motor through an electrical signal input to realize the opening and closing action, so that the cold air can be bypassed through the bypass, and the cold air flow entering the heat exchanger is controlled to exchange heat with the coolant to obtain different heat exchange powers, so that the cold air and the coolant reach different working temperatures to meet the working requirements of the environmental control system under different flight conditions, and ensure the normal operation of the environmental control system.

[0004] However, the above utility model patent is connected to the tangential regulating valve through the air outlet cover assembly and the air cooling bypass assembly in the air outlet structure, resulting in a bulky connection structure between the tangential regulating valve and the cold air bypass circuit and the cold air outlet, a large cold air bypass flow resistance, and a low degree of structural compactness due to the inability of the connection part to withstand the vibration resistance of the tangential regulating valve installed thereon. In addition, the tangential regulating valve used in the above utility model patent is an independent vertical structure, which does not meet the requirements of miniaturization of the radiator. Summary of the invention

[0005] In view of the problems existing in the background technology, the utility model aims to provide a low-flow-resistance compact radiator with a built-in air bypass tangential regulating valve for an aircraft thermal management system, aiming to solve the problems in the existing radiator that the connection structure between the tangential regulating valve and the cold air bypass circuit and the cold air outlet is bulky, the cold air bypass flow resistance is large, and the connection part cannot withstand the vibration resistance of the tangential regulating valve installed thereon, thereby improving the compactness of the radiator, reducing the number of parts, reducing the flow resistance of the cold air bypass, and meeting the requirements of miniaturization of the radiator.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] Low flow resistance compact radiator with integrated air bypass tangential regulating valve, including:

[0008] A heat dissipation core assembly, wherein a cold air flow channel and a heat medium flow channel are arranged inside the heat dissipation core assembly;

[0009] A cold air bypass component, wherein the cold air bypass component is arranged side by side with the heat dissipation core component, and the inlet of the cold air channel inside the cold air bypass component is in the same plane as the inlet of the cold air flow channel, and the outlet of the cold air channel is in the same plane as the outlet of the cold air flow channel;

[0010] A cold air outlet end cover assembly, the cold air outlet end cover assembly comprising a cover body, an inlet and an outlet, and the inlet is simultaneously connected to the outlet of the cold air channel in the cold air bypass assembly and the outlet of the cold air flow channel in the heat dissipation core assembly;

[0011] The hot side end cover comprises a cover body, an inlet and an outlet, wherein the inlet is connected to the inlet of the heat medium flow channel in the heat dissipation core assembly, and the outlet is connected to the outlet of the heat medium flow channel in the heat dissipation core assembly;

[0012] A cold air inlet end cover assembly, the cold air inlet end cover assembly comprises a streamlined shell, the streamlined shell comprises a tangential regulating valve, a main air inlet channel and a bypass air inlet channel, the tangential regulating valve is located at the inlet of the main air inlet channel and the inlet of the bypass air inlet channel, the tangential regulating valve comprises a rotating shaft and a valve plate connected to the rotating shaft, the outlet of the main air inlet channel is communicated with the inlet of the cold air flow channel in the heat dissipation core assembly, and the outlet of the bypass air inlet channel is communicated with the inlet of the cold air channel in the cold air bypass assembly;

[0013] A stepper motor is detachably connected to the outside of a streamlined housing of a cold air inlet end cover assembly and is connected to a rotating shaft of a tangential regulating valve.

[0014] Furthermore, the cold air flow channel is a plurality of single-flow flow channels, and the heat medium flow channel is a plurality of double-flow flow channels, and the single-flow flow channels and the double-flow flow channels are distributed in a cross-counterflow or cross-flow shape.

[0015] Furthermore, the heat dissipation core assembly and the cold air bypass assembly are located between the cold air inlet end cover assembly and the cold air outlet end cover assembly, so that the cold air inlet end cover assembly, the heat dissipation core assembly, the cold air bypass assembly, and the cold air outlet end cover assembly are arranged in sequence along a straight line.

[0016] Furthermore, the heat dissipation core assembly, the cold air outlet end cover assembly, the hot side end cover, the cold air inlet end cover assembly and the cold air bypass assembly are connected by argon arc welding to form a rigid structure.

[0017] Furthermore, the cold air inlet end cover assembly is connected to the stepper motor via a clamp or bolts.

[0018] Furthermore, the valve plate in the tangential regulating valve is an elliptical valve plate.

[0019] Furthermore, the heat dissipation core assembly is a plate-fin type, tube-belt type or tube-sheet type heat exchange structure.

[0020] Furthermore, the outlet of the cold air outlet end cover assembly is offset close to one side of the cold air bypass assembly; the inlet of the streamlined shell of the cold air inlet end cover assembly and the bypass air intake channel are offset close to one side of the cold air bypass assembly.

[0021] Compared with the prior art, the utility model has the following characteristics:

[0022] (1) The tangential regulating valve and the stepper motor used in the utility model are separated into two components. The tangential regulating valve (specifically, the valve body) and the cold air inlet end cover assembly are self-contained, and a low-resistance, high-rigidity streamlined structure is formed by integral machining, making the structure of the entire radiator more compact, lighter, and reducing the number of parts. At the same time, it can better withstand the vibration resistance of the stepper motor installed on it. The utility model optimizes the structure and reduces the process difficulty, making the connection between the stepper motor and the main air intake channel and the bypass air intake channel in the cold air inlet end cover assembly with the tangential regulating valve more compact and more reliable.

[0023] (2) In the utility model, the cold air inlet end cover assembly and the cold air outlet end cover assembly are respectively located at the two ends of the heat dissipation core assembly, and the cold air inlet end cover assembly is provided with a tangential regulating valve, a main air inlet channel and a bypass air inlet channel, and the cold air bypass assembly and the heat dissipation core assembly are arranged in parallel (for example, vertically or horizontally), and the cold air outlet end cover assembly is a channel for main air outlet and bypass air outlet. Under different flight conditions, the aircraft uses a stepper motor to drive the tangential regulating valve to accurately control the flow of the air circuit. In the overall structure, the heat dissipation core assembly, the cold air bypass assembly, the cold air inlet end cover assembly, the cold air outlet end cover assembly, and the stepper motor and other components are more compact. In particular, the tangential regulating valve is machined as an integral part with the main air inlet channel and the bypass air inlet channel, which is more conducive to the miniaturization requirement of the radiator.

[0024] (3) In the utility model, the double-flow baffle chamber is eliminated on the high-temperature hot fluid side of the radiator, and a cold air bypass assembly is added to the side plate of the heat dissipation core to form a cold air channel. The cold air inlet end cover assembly integrates a tangential regulating valve, a cold air inlet (corresponding to the inlet of the main air intake channel) and a bypass cold air inlet (corresponding to the inlet of the bypass air intake channel), and the separately installed tangential regulating valve is eliminated, thereby eliminating the need for an independent valve body, making the radiator more compact, lighter, and having a smaller cold air flow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a low flow resistance compact radiator with its own air bypass tangential regulating valve;

[0026] Figure 2 It is a structural schematic diagram of the heat dissipation core assembly;

[0027] Figure 3 for Figure 2 Schematic diagram of the AA section;

[0028] Figure 4 It is a schematic diagram of the structure of the hot edge end cover;

[0029] Figure 5 It is a structural schematic diagram of the cold air inlet end cover assembly;

[0030] Figure 6 It is a structural schematic diagram of the cold air inlet tangential regulating valve;

[0031] Figure 7 It is a structural schematic diagram of the cold air outlet end cover assembly;

[0032] Figure 8 It is a structural schematic diagram of a stepper motor and a cold air outlet end cover assembly;

[0033] Fig. 9 The main road working principle diagram;

[0034] Fig.10 This is the bypass working principle diagram;

[0035] Fig.11 for Figure 1 Exploded diagram of

[0036] Fig.12 for Figure 8 Exploded diagram of

[0037] Explanation of the accompanying drawings: 1. heat dissipation core assembly; 2. air outlet end cover assembly; 3. hot side end cover; 4. cold air inlet end cover assembly; 401. tangential regulating valve; 402. main air intake channel; 403. bypass air intake channel; 5. stepper motor; 6. cold air bypass assembly. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] like Figures 1 to 12As shown, a low flow resistance compact radiator with built-in air bypass tangential regulating valve for aircraft thermal management system (the switching function between the main path and the bypass is mainly realized by the motor driving the valve to rotate, that is, the switching between the main path direction and the bypass direction is realized, so the combined structure is called a tangential regulating valve.), including a heat dissipation core assembly 1, a cold air outlet end cover assembly 2, a hot side end cover 3, a cold air inlet end cover assembly 4, a stepper motor 5 and a cold air bypass assembly 6. A cold air flow channel and a hot medium flow channel are arranged inside the heat dissipation core assembly 1; the inlet of the cold air outlet end cover assembly 2 is connected to the outlet of the cold air channel in the cold air bypass assembly 6 and the outlet of the cold air flow channel in the heat dissipation core assembly 1 at the same time; the hot side end cover 3 is connected to the inlet and outlet of the hot medium flow channel; the cold air inlet end cover assembly 4 includes a tangential regulating valve 401, a main air inlet channel 402 and a bypass air inlet channel 403, and an elliptical valve plate is installed on the rotating shaft of the tangential regulating valve 401. Through the rotation of the valve plate, different cold air inlets are formed, which are respectively recorded as the first inlet and the second inlet, wherein the first inlet is connected to the inlet end of the main air inlet channel 402, and the second inlet is connected to the inlet end of the bypass outlet channel 403, and the outlet ends of the main air inlet channel 402 and the bypass air inlet channel 403 are both connected to the cold air flow channel in the heat dissipation core assembly 1. One end of the cold air bypass assembly 6 is connected to the bypass air inlet channel 403 of the cold air inlet end cover assembly 4, and the other end is connected to the cold air outlet end cover assembly 2; the stepper motor 5 controls the rotating shaft of the tangential regulating valve 4 to drive the elliptical valve plate to rotate to realize the main or bypass opening function of the cold air. The tangential regulating valve 401, the main air inlet channel 402 and the bypass air inlet channel 403 are integrated in the cold air inlet end cover assembly 4. The shell of the cold air inlet end cover assembly 4 adopts integral machining to form a streamlined structure with low resistance and high rigidity, which reduces the number of parts, makes the structure of the entire radiator more compact and lighter, and can withstand the anti-vibration ability of the stepper motor 5 installed thereon, optimizes the structure, and reduces the process difficulty. The stepper motor 5 controls the rotation of the tangential regulating valve 401 through an electrical signal, and intelligently and automatically controls and adjusts the flow rate on the air side of the air cooling circuit, realizing the heat exchange function and performance precision requirements of the aircraft thermal management system under different flight conditions.

[0042] Combination Figure 2 and Figure 3 As shown, the cold air flow channel inside the heat dissipation core assembly 1 includes multiple single-flow flow channels, and the heat medium flow channel includes multiple double-flow flow channels. The single-flow flow channels and the double-flow flow channels are distributed in a cross-counterflow or counterflow shape, which improves the heat exchange performance of the radiator; baffle fins are used on the liquid cooling side of the heat dissipation core assembly 1, and the double-flow baffle chamber is eliminated, which improves the compactness of the product. Figure 2 In the figure, the dotted arrows indicate the direction of cold air flow. Figure 3 In the figure, the solid arrows indicate the flow direction of the heat medium.

[0043] Combination Figure 1 As shown, the cold air inlet end cap assembly 4 and the cold air outlet end cap assembly 2 are respectively located at the two ends of the heat dissipation core assembly 1, and the cold air bypass assembly 6 and the heat dissipation core assembly 1 are arranged in parallel. By arranging the cold air bypass assembly 6 and the heat dissipation core assembly 1 in parallel and connecting the cold air inlet end cap assembly 4 and the cold air outlet end cap assembly 2 at both ends, it is beneficial to reduce the volume of the entire radiator, and the structure is more compact, thereby achieving the purpose of miniaturization.

[0044] In this embodiment, the heat dissipation core assembly 1, the cold air outlet end cover assembly 2, the hot side end cover 3, the cold air inlet end cover assembly 4, and the cold air bypass assembly 6 are connected into a rigid structure by argon arc welding to improve the overall rigidity of the entire radiator.

[0045] In this embodiment, the cold air inlet cover assembly 4 is fixedly connected to the stepper motor 5 by a clamp or bolts. Figure 5 as well as Figure 7 As shown, a boss is machined on the cold air inlet end cover assembly 4 for connection with the stepper motor 5 via a clamp, so that the connection reliability between the stepper motor 5 and the cold air inlet end cover assembly 4 is high, and at the same time, the cold air inlet end cover assembly 4 can well withstand the vibration resistance of the stepper motor 5 installed thereon.

[0046] The heat dissipation core assembly 1 is the main body of the radiator and is the key functional part of the product. It adopts a plate-fin, tube-belt or tube-sheet heat exchange structure with compact structure and high heat transfer efficiency. The radiator material is aluminum alloy, copper alloy, titanium alloy, stainless steel alloy and high-temperature alloy with high heat transfer efficiency, good welding processability and high strength.

[0047] Combination Figure 1 As shown, the cold air inlet end cover assembly 4 is a streamlined structure with low resistance, such as Fig. 9 In the air flow path shown by the middle arrow, the inlet of the streamlined shell of the cold air inlet end cover assembly 4 and the internal bypass air inlet passage 403 are offset close to the cold air bypass assembly 6, so that the curvature of the cold air flow path in the bypass passage is reduced, and the resistance is reduced, thereby reducing the bypass passage flow resistance and reducing the air bypass resistance to meet the system resistance requirements. Similarly, the outlet of the cold air outlet end cover assembly 2 is offset close to the cold air bypass assembly 6.

[0048] like Figure 6 As shown, the tangential regulating valve 401 in the cold air inlet end cover assembly 4 adopts a rotating shaft to drive the elliptical valve plate, and the rotating shaft is driven by the stepping motor 5 to drive the elliptical valve plate to realize the bypass diversion of the cold air.

[0049] The working principle of the radiator of the utility model is:

[0050] Under different flight conditions, the aircraft controls the tangential regulating valve 401 through the stepper motor 5 to precisely control the flow of the air circuit, thereby realizing intelligent and precise control of the ram air in the radiator and the heating or heat dissipation of the high-temperature hot fluid. Fig. 9 and Fig.10 As shown, after the ram air enters from the cold air inlet end cover assembly 4, it is divided into two independent paths, one is the main path and the other is the bypass path. The main path is through the first inlet of the cold air inlet end cover assembly 4 and the main air inlet channel 402 to enter the cold air flow channel in the heat dissipation core assembly 1, and then flows out from the cold air outlet end cover assembly 2; the bypass path is through the second inlet of the cold air inlet end cover assembly 4 and the bypass air inlet channel 403 to enter the cold air bypass assembly 6, and flows out through the cold air outlet end cover assembly 2. When the heat medium needs to exchange heat with the radiator, the stepper motor 5 drives the tangential regulating valve 401 to operate, so that the main path is opened (the first inlet is opened), the bypass is closed (the second inlet is closed), and the ram air enters the cold air flow channel in the heat dissipation core assembly 1 through the main air intake channel 402 of the cold air inlet end cover assembly 4, and then flows out from the cold air outlet end cover assembly 2; when the heat medium does not need to exchange heat, the stepper motor 5 drives the tangential regulating valve 401 to operate again, so that the main path is closed (the first inlet is closed), the bypass is opened (the second inlet is opened), and the ram air enters the cold air bypass assembly 6 through the bypass air intake channel 403 of the inlet end cover assembly 4, and flows out from the cold air outlet end cover assembly 2.

[0051] The low-resistance compact radiator with built-in air bypass tangential regulating valve for an aircraft thermal management system provided by the utility model can ensure that the ram cold air introduced from outside the aircraft reaches a certain temperature after heat exchange with the high-temperature hot fluid (heat medium) and is used for air conditioning in the cabin, and the high-temperature hot fluid reaches a certain temperature after heat exchange with the cold air and is used for the aircraft thermal management system, thereby reducing the number of parts, installation space and weight of cooling accessories of the aircraft thermal management system, reducing the complexity of the structure of the aircraft thermal management system, improving the accuracy of the heat exchange function of the cooling accessories of the aircraft thermal management system under different flight conditions, reducing the quality failure rate of the aircraft thermal management system, and ensuring the reliability of the aircraft thermal management system.

[0052] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made under the concept of the present invention using the contents of the specification and drawings of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Low flow resistance compact radiator with air bypass tangential regulating valve, characterized by: include: A heat dissipation core assembly (1), wherein a cold air flow channel and a heat medium flow channel are arranged inside the heat dissipation core assembly (1); A cold air bypass component (6), wherein the cold air bypass component (6) and the heat dissipation core component (1) are arranged side by side, and the inlet of the cold air channel inside the cold air bypass component (6) is in the same plane as the inlet of the cold air flow channel, and the outlet of the cold air channel is in the same plane as the outlet of the cold air flow channel; A cold air outlet end cover assembly (2), the cold air outlet end cover assembly (2) comprising a cover body, an inlet and an outlet, wherein the inlet is simultaneously connected to the outlet of the cold air channel in the cold air bypass assembly (6) and the outlet of the cold air flow channel in the heat dissipation core assembly (1); A hot side end cover (3), the hot side end cover (3) comprising a cover body, an inlet and an outlet, wherein the inlet is connected to the inlet of the heat medium flow channel in the heat dissipation core component (1), and the outlet is connected to the outlet of the heat medium flow channel in the heat dissipation core component (1); A cold air inlet end cover assembly (4), the cold air inlet end cover assembly (4) comprising a streamlined shell, the streamlined shell comprising a tangential regulating valve (401), a main air inlet channel (402) and a bypass air inlet channel (403), the tangential regulating valve (401) being located at the inlet of the main air inlet channel (402) and the inlet of the bypass air inlet channel (403), the tangential regulating valve (401) comprising a rotating shaft and a valve plate connected to the rotating shaft, the outlet of the main air inlet channel (402) being connected to the inlet of the cold air flow channel in the heat dissipation core assembly (1), and the outlet of the bypass air inlet channel (403) being connected to the inlet of the cold air channel in the cold air bypass assembly (6); A stepper motor (5) is detachably connected to the outside of the streamlined housing of the cold air inlet end cover assembly (4) and is connected to the rotating shaft of the tangential regulating valve (401).

2. The low flow resistance compact radiator with an air bypass tangential regulating valve according to claim 1, characterized in that: The cold air flow channel is a plurality of single-flow flow channels, and the heat medium flow channel is a plurality of double-flow flow channels. The single-flow flow channels and the double-flow flow channels are distributed in a cross-counterflow or cross-flow shape.

3. The low flow resistance compact radiator with air bypass tangential regulating valve according to claim 1, characterized in that: The heat dissipation core assembly (1) and the cold air bypass assembly (6) are located between the cold air inlet end cover assembly (4) and the cold air outlet end cover assembly (2), so that the cold air inlet end cover assembly (4), the heat dissipation core assembly (1), the cold air bypass assembly (6), and the cold air outlet end cover assembly (2) are arranged in sequence along a straight line.

4. The low flow resistance compact radiator with an air bypass tangential regulating valve according to claim 1, characterized in that: The heat dissipation core assembly (1), the cold air outlet end cover assembly (2), the hot side end cover (3), the cold air inlet end cover assembly (4) and the cold air bypass assembly (6) are connected by argon arc welding to form a rigid structure.

5. The low flow resistance compact radiator with air bypass tangential regulating valve according to claim 1, characterized in that: The cold air inlet end cover assembly (4) is connected to the stepping motor (5) via a clamp or bolts.

6. The low flow resistance compact radiator with air bypass tangential regulating valve according to claim 5, characterized in that: The valve plate in the tangential regulating valve (401) is an elliptical valve plate.

7. The low flow resistance compact radiator with air bypass tangential regulating valve according to claim 1, characterized in that: The heat dissipation core assembly (1) is a plate-fin type, tube-belt type or tube-sheet type heat exchange structure.

8. The low flow resistance compact radiator with an air bypass tangential regulating valve according to claim 1, characterized in that: The outlet of the cold air outlet end cover assembly (2) is offset to be close to one side of the cold air bypass assembly (6); The inlet of the streamlined shell of the cold air inlet end cover assembly (4) and the bypass air inlet passage (403) are offset to one side close to the cold air bypass assembly (6).

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