Water-air intercooler of engine thermal management system

Abstract

The utility model discloses a water-air intercooler of an engine thermal management system, belongs to the technical field of intercoolers, and solves the problem that soldering flux is easy to remain in an air channel and a water channel of an existing water-air intercooler. The radiator comprises a plurality of air side radiating pipes and a plurality of water side radiating pipes, the water side radiating pipes are harmonica-shaped radiating plates which are formed through hot extrusion and provided with a plurality of water channels, a plurality of radiating fins are integrally formed on the inner wall of each water channel, the air side radiating pipes are harmonica-shaped radiating plates which are formed through hot extrusion and provided with a plurality of air channels, and the radiating fins are integrally formed on the inner wall of each water channel. A plurality of heat dissipation fins are integrally formed on the inner wall of each air channel. The multiple gas side radiating pipes and the multiple water side radiating pipes are stacked in a crossed mode and fixed together to form a heat exchanger core. According to the water-air intercooler of the engine thermal management system, brazing in the air channels and the water channels is not needed, the problem of brazing flux and aluminum scrap residues of the air channels of the water-air intercooler is solved, and the requirement for low conductivity can be met without cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of intercoolers, and more particularly to a water-to-air intercooler of an engine thermal management system. Background Art

[0002] The water-to-air intercooler is a crucial component in efficient, intelligent engine thermal management systems, particularly for commercial vehicle engines. It improves engine thermal efficiency and reduces nitrogen oxide emissions during the engine's operating cycle, maintaining the engine at an optimal temperature and extending its service life. Typical water-to-air intercoolers utilize aluminum tube-and-belt, aluminum plate-fin, or aluminum laminate structures. Fins are incorporated into both the air and water channels. The air channel fins typically utilize louvered or staggered fins, while the water channel fins utilize a staggered structure. The fins are brazed to the channels, which inevitably leaves residual flux (a eutectic of KAlF4 and K3AlF6) within the air and water channels.

[0003] First, residual flux in the waterways can cause the waterside conductivity of a water-to-air intercooler to reach several hundred, sometimes even thousands of microns / cm. To meet the required conductivity of less than 5 microns / cm, the waterside must be cleaned for extended periods (72 to 120 hours) using deionized water at 70 to 90 degrees Celsius. This significantly increases production costs and extends the production cycle. Furthermore, the airway fins of conventional water-to-air intercoolers typically utilize louvered or staggered fins. These louvered and staggered fins are prone to aluminum shavings at their cutouts, which also affects conductivity.

[0004] Therefore, it is urgent to develop and design a water-to-air intercooler for an engine thermal management system to solve the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. The purpose of the present invention is to provide a water-to-air intercooler for an engine thermal management system, which does not require brazing in the air duct and water duct, eliminates the problem of residual flux and aluminum chips in the air duct of the water-to-air intercooler, and can meet the low conductivity requirement without the need for cleaning.

[0006] 19. The heat dissipation device as claimed in claim 18, wherein the bridge has two opposite ends, and one of the ends is connected to the sidewall of the cooling fan, and the other ends is connected to the cooling fan by a threaded connection, and the other ends are connected to the cooling fan by a threaded connection.

[0007] As a further improvement, the water inlet chamber is provided with a water inlet, the water outlet chamber is provided with a water outlet, the air inlet chamber is provided with an air inlet, and the air outlet chamber is provided with an air outlet.

[0008] Furthermore, the thickness of the air-side heat dissipation pipe is greater than the thickness of the water-side heat dissipation pipe, and the width of the air channel is smaller than the width of the water channel.

[0009] Furthermore, the adjacent air-side heat dissipation tubes and water-side heat dissipation tubes are brazed together by solder paste or welding sheets, and the water inlet chamber, water outlet chamber, air inlet chamber and air outlet chamber are all fixed to the heat exchanger core by welding.

[0010] Furthermore, connecting plates are welded on both sides of the heat exchanger core at positions different from the air channel and the water channel, and the water inlet chamber, the water outlet chamber, the air inlet chamber and the air outlet chamber are all connected to the connecting plates.

[0011] Furthermore, the wall thickness of both ends of the air-side heat dissipation pipe is greater than or equal to 1.5 mm, and the spacing between the heat dissipation ribs corresponding to the air-side heat dissipation pipe is 2 to 10 mm.

[0012] Furthermore, the wall thickness of both ends of the water-side heat dissipation pipe is greater than or equal to 1.5 mm, and the spacing between the heat dissipation ribs corresponding to the water-side heat dissipation pipe is 2 to 20 mm.

[0013] Furthermore, the water-side heat dissipation pipe and the gas-side heat dissipation pipe are both square plates, and the length and width of the water-side heat dissipation pipe and the gas-side heat dissipation pipe are the same.

[0014] Furthermore, the air-side heat dissipation pipe and the water-side heat dissipation pipe are both made of aluminum.

[0015] Beneficial effects

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The water-to-air intercooler of the engine thermal management system of the present invention has an air-side heat dissipation pipe and a water-side heat dissipation pipe, both of which adopt a hot extrusion molding structure. There is no need for brazing in the air channel and the water channel, eliminating the problem of residual flux and aluminum chips in the air channel of the water-to-air intercooler, and the low conductivity requirement can be met without cleaning. At the same time, the air-side heat dissipation pipe and the water-side heat dissipation pipe are integrally molded into heat dissipation ribs during the hot extrusion molding process, which can ensure the heat dissipation performance of the water-to-air intercooler. The utility model is suitable for the water-to-air intercooler of the engine thermal management system and the fuel cell thermal management system. When used in the engine thermal management system, it can improve the cleanliness. When used in the combustion battery heat pipe system, it can simultaneously improve the cleanliness and reduce the conductivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the heat exchanger core in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the water-side heat dissipation pipe in the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the gas side heat dissipation pipe in the utility model;

[0022] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0023] Among them: 1-air side heat dissipation pipe, 2-water side heat dissipation pipe, 3-water channel, 4-heat dissipation ribs, 5-air channel, 6-heat exchanger core, 7-water inlet chamber, 8-water outlet chamber, 9-air inlet chamber, 10-air outlet chamber, 11-water inlet, 12-water outlet, 13-air inlet, 14-air outlet, 15-connecting plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0025] See Figure 1-5The utility model discloses a water-to-air intercooler for an engine thermal management system, comprising a plurality of air-side heat dissipation pipes 1 and a water-side heat dissipation pipe 2, wherein the water-side heat dissipation pipe 2 is a harmonica-shaped heat dissipation plate formed by hot extrusion and having a plurality of water channels 3, and the inner wall of each water channel 3 is integrally formed with a plurality of heat dissipation fins 4 to ensure heat dissipation performance, and the air-side heat dissipation pipe 1 is a harmonica-shaped heat dissipation plate formed by hot extrusion and having a plurality of air channels 5, and the inner wall of each air channel 5 is integrally formed with a plurality of heat dissipation fins 4 to ensure heat dissipation performance; a plurality of air-side heat dissipation pipes 1 and water-side heat dissipation pipes 2 are cross-stacked and fixed together to form a heat exchanger core 6, and each water-side heat dissipation pipe 2 is connected to the heat exchanger core 6. The axial center line of the corresponding water channel 3 is perpendicular to the axial center line of the air channel 5 corresponding to each air-side heat dissipation tube 1. The water channel 3 and the air channel 5 are arranged perpendicular to each other. The circulating water can quickly take away the heat of the airflow, thereby improving the heat dissipation performance. At the same time, it can also improve the structural strength of the entire heat exchanger core 6. The heat exchanger core 6 is provided with a water inlet chamber 7 and a water outlet chamber 8 that completely cover the multiple water channels 3 corresponding to the multiple water-side heat dissipation tubes 2, which is convenient for the entry and exit of the circulating water. The heat exchanger core 6 is also provided with an air inlet chamber 9 and an air outlet chamber 10 that completely cover the multiple air channels 5 corresponding to the multiple air-side heat dissipation tubes 1, which is convenient for the entry and exit of the airflow.

[0026] The water-to-air intercooler of the engine thermal management system of the present invention has an air-side heat dissipation pipe 1 and a water-side heat dissipation pipe 2, both of which adopt a hot extrusion-molded structure. There is no need to braze in the air channel 5 and the water channel 3, eliminating the problem of residual flux and aluminum chips in the air channel of the water-to-air intercooler, and the low conductivity requirement can be met without cleaning. At the same time, the air-side heat dissipation pipe 1 and the water-side heat dissipation pipe 2 are integrally formed with the heat dissipation ribs 4 during the hot extrusion molding process, which can ensure the heat dissipation performance of the water-to-air intercooler. The utility model is suitable for the water-to-air intercooler of the engine thermal management system and the fuel cell thermal management system. When used in the engine thermal management system, it can improve the cleanliness. When used in the combustion battery heat pipe system, it can simultaneously improve the cleanliness and reduce the conductivity.

[0027] Preferably, a water inlet 11 is provided on the water inlet chamber 7, and a water outlet 12 is provided on the water outlet chamber 8, which is convenient for connecting pipelines. The water inlet 11 and the water inlet chamber 7 are an integrated structure, and the water outlet 12 and the water outlet chamber 8 are also an integrated structure, which is convenient for manufacturing and has better structural strength. An air inlet 13 is provided on the air inlet chamber 9, and an air outlet 14 is provided on the air outlet chamber 10, which is convenient for connecting pipelines. The air inlet 13 and the air inlet chamber 9 are an integrated structure, and the air outlet 14 and the air outlet chamber 10 are also an integrated structure, which is convenient for manufacturing and has better structural strength.

[0028] Preferably, the thickness of the air-side heat dissipation pipe 1 is greater than the thickness of the water-side heat dissipation pipe 2, which can increase the volume of the air channel 5, thereby increasing the contact area between the airflow and the inner wall of the air channel 5 and improving the heat dissipation efficiency. The width of the air channel 5 is smaller than the width of the water channel 3, so that the contact area between a single water channel 3 and the airflow is larger, and the water flow per unit area can take away more heat, thereby improving the heat dissipation performance.

[0029] Preferably, adjacent air-side heat dissipation tubes 1 and water-side heat dissipation tubes 2 are brazed together by solder paste or welding sheets to achieve fixed connection between the air-side heat dissipation tubes 1 and the water-side heat dissipation tubes 2, and the water inlet chamber 7, water outlet chamber 8, air inlet chamber 9 and air outlet chamber 10 are all fixed on the heat exchanger core 6 by welding to achieve fixed connection between the water inlet chamber 7, water outlet chamber 8, air inlet chamber 9 and air outlet chamber 10.

[0030] Preferably, connecting plates 15 are welded on both sides of the heat exchanger core 6 at a different position from the air channel 5 and the water channel 3, and the water inlet chamber 7, the water outlet chamber 8, the air inlet chamber 9 and the air outlet chamber 10 are all connected to the connecting plates 15. Since the sides of the air-side heat dissipation pipe 1 and the water-side heat dissipation pipe 2 are relatively weak positions, the setting of the connecting plates 15 can, on the one hand, increase the contact area between the heat exchanger core 6 and the water inlet chamber 7, the water outlet chamber 8, the air inlet chamber 9 and the air outlet chamber 10, facilitate welding, and reduce the deformation of the air-side heat dissipation pipe 1 and the water-side heat dissipation pipe 2. On the other hand, it can protect the air-side heat dissipation pipe 1 and the water-side heat dissipation pipe 2 and prevent them from being damaged.

[0031] Preferably, the wall thickness at both ends of the air-side heat dissipation pipe 1 is greater than or equal to 1.5 mm, further improving the structural strength of the air-side heat dissipation pipe 1. At the same time, the spacing between the heat dissipation ribs 4 corresponding to the air-side heat dissipation pipe 1 is 2 to 10 mm, ensuring smooth airflow while also ensuring heat dissipation effect. Similarly, the wall thickness at both ends of the water-side heat dissipation pipe 2 is greater than or equal to 1.5 mm, further improving the structural strength of the water-side heat dissipation pipe 2. At the same time, the spacing between the heat dissipation ribs 4 corresponding to the water-side heat dissipation pipe 2 is 2 to 20 mm, ensuring smooth water flow while also ensuring heat dissipation effect. Furthermore, the protrusion height of the heat dissipation rib 4 is 1-2 mm, which meets the heat dissipation requirements while avoiding the problem of the protrusion height being too large and difficult to extrude or deforming after extrusion.

[0032] Preferably, both the water-side heat dissipation tube 2 and the air-side heat dissipation tube 1 are square plates. The length and width of the water-side heat dissipation tube 2 and the air-side heat dissipation tube 1 are the same, which facilitates molding and results in a larger heat exchanger core 6 with better heat dissipation performance. Furthermore, both the air-side heat dissipation tube 1 and the water-side heat dissipation tube 2 are made of aluminum, which has better thermal conductivity and helps improve heat dissipation performance.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A water-to-air intercooler for an engine thermal management system, characterized in that: The invention comprises a plurality of air-side heat dissipation pipes (1) and water-side heat dissipation pipes (2), wherein the water-side heat dissipation pipes (2) are harmonica-shaped heat dissipation plates formed by hot extrusion and having a plurality of water channels (3), and the inner wall of each of the water channels (3) is integrally formed with a plurality of heat dissipation fins (4); the air-side heat dissipation pipes (1) are harmonica-shaped heat dissipation plates formed by hot extrusion and having a plurality of air channels (5), and the inner wall of each of the air channels (5) is integrally formed with a plurality of heat dissipation fins (4); the plurality of air-side heat dissipation pipes (1) and water-side heat dissipation pipes (2) are cross-stacked. The heat exchanger core (6) is fixed together to form a heat exchanger core (6), the axis of the water channel (3) corresponding to each water-side heat dissipation tube (2) and the axis of the air channel (5) corresponding to each air-side heat dissipation tube (1) are perpendicular to each other, and the heat exchanger core (6) is provided with a water inlet chamber (7) and a water outlet chamber (8) that completely cover the multiple water channels (3) corresponding to the multiple water-side heat dissipation tubes (2), and the heat exchanger core (6) is also provided with an air inlet chamber (9) and an air outlet chamber (10) that completely cover the multiple air channels (5) corresponding to the multiple air-side heat dissipation tubes (1).

2. The water-to-air intercooler of an engine thermal management system according to claim 1, characterized in that: The water inlet chamber (7) is provided with a water inlet (11), the water outlet chamber (8) is provided with a water outlet (12), the air inlet chamber (9) is provided with an air inlet (13), and the air outlet chamber (10) is provided with an air outlet (14).

3. The water-to-air intercooler of an engine thermal management system according to claim 1, characterized in that: The thickness of the air-side heat dissipation pipe (1) is greater than the thickness of the water-side heat dissipation pipe (2), and the width of the air channel (5) is smaller than the width of the water channel (3).

4. The water-to-air intercooler of an engine thermal management system according to claim 1, characterized in that: The adjacent air-side heat dissipation tubes (1) and water-side heat dissipation tubes (2) are brazed together by solder paste or welding sheets, and the water inlet chamber (7), water outlet chamber (8), air inlet chamber (9) and air outlet chamber (10) are all fixed to the heat exchanger core (6) by welding.

5. The water-to-air intercooler of an engine thermal management system according to claim 4, characterized in that: Connecting plates (15) are welded on both sides of the heat exchanger core (6) at positions different from those of the air channel (5) and the water channel (3), and the water inlet chamber (7), the water outlet chamber (8), the air inlet chamber (9) and the air outlet chamber (10) are all connected to the connecting plates (15).

6. The water-to-air intercooler of an engine thermal management system according to claim 1, characterized in that: The wall thickness of both ends of the air-side heat dissipation pipe (1) is greater than or equal to 1.5 mm, and the spacing between the heat dissipation fins (4) corresponding to the air-side heat dissipation pipe (1) is 2 to 10 mm.

7. The water-to-air intercooler of an engine thermal management system according to claim 1, characterized in that: The wall thickness of both ends of the water-side heat dissipation pipe (2) is greater than or equal to 1.5 mm, and the spacing between the heat dissipation fins (4) corresponding to the water-side heat dissipation pipe (2) is 2 to 20 mm.

8. The water-to-air intercooler of an engine thermal management system according to any one of claims 1 to 7, characterized in that: The water-side heat dissipation pipe (2) and the gas-side heat dissipation pipe (1) are both square plates, and the length and width of the water-side heat dissipation pipe (2) and the gas-side heat dissipation pipe (1) are the same.

9. The water-to-air intercooler of an engine thermal management system according to claim 8, characterized in that: The air-side heat dissipation pipe (1) and the water-side heat dissipation pipe (2) are both made of aluminum.

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