Symmetrical vehicle heat dissipation system and method based on dot matrix turbulent flow and W-shaped flow channel

Abstract

The invention discloses a symmetric vehicle heat dissipation system based on dot matrix turbulent flow and W-shaped flow channels. The device comprises a radiator module, an air duct module and a fan module, the radiator module comprises a low-temperature radiator, an intercooler and a high-temperature radiator, wherein the intercooler and the high-temperature radiator form a certain included angle with the horizontal plane and are symmetrically arranged. The fan modules are arranged at the two ends of the radiator module; the air duct module is in a W shape, and cooling air sequentially flows through the intercooler and the high-temperature radiator from an inlet of the low-temperature radiator, flows to the fan under guiding of the guide plate and is exhausted to the atmosphere through the fan. By constructing a W-shaped heat dissipation flow channel, slow angle change of cooling airflow is guided, and huge pressure loss caused by sudden turning is greatly reduced; meanwhile, the uniformity of cooling air flowing is improved through the symmetrical intercooler, the high-temperature radiator and the flow guide plate.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management, and particularly relates to a symmetric vehicle heat dissipation system and method based on dot matrix turbulence and a W-shaped flow channel. Background Art

[0002] A vehicle radiator is an important part of a vehicle thermal management system, which is used to regulate the temperatures of components such as engines, motors, and drivers and dissipate the heat generated by overheating to the surrounding environment. The vehicle radiator utilizes a coolant (usually a mixture of water and a coolant such as ethylene glycol) to circulate around the heat dissipation components, and transfers the heat from the coolant to the air through the heat dissipation fins and pipes in the radiator to achieve heat dissipation.

[0003] The cooling air of existing vehicle heat dissipation systems is usually introduced through the air inlet or fan at the front of the vehicle. However, the equipment compartment of special vehicles is narrow, which limits the air intake conditions at the front of the vehicle, and only the heat dissipation method of the same-side air intake and exhaust can be adopted. The biggest problem with the same-side air intake is the flow resistance reduction of the cooling air and the design of air volume uniformity. At the same time, special vehicles have many electronic devices and have high requirements for the efficiency of the radiator. If effective rapid heat dissipation means are not adopted, the temperature of electronic components will rise rapidly, reducing the working performance of the equipment and even burning out, affecting the safety and reliability of the vehicle. Taking the commonly used tube-and-fin radiator as an example, the cooling air passes through the straight heat dissipation fins, and the short air travel does not bring the optimal heat transfer effect. Summary of the Invention

[0004] In view of this, the present invention provides a symmetric vehicle heat dissipation system and method based on dot matrix turbulence and a W-shaped flow channel, which can achieve efficient heat dissipation of high-power density large vehicles, has a compact structure, makes up for the disadvantage of uneven air volume in the same-side air intake and exhaust technology, and ensures the safety and reliability of vehicle operation.

[0005] The symmetric vehicle heat dissipation system based on dot matrix turbulence and a W-shaped flow channel of the present invention includes: a radiator module, an air duct module, and a fan module;

[0006] Among them, the radiator module includes a low-temperature radiator, a symmetric intercooler, and a symmetric high-temperature radiator arranged in sequence along the flow direction of the cooling air; the intercooler and the high-temperature radiator form a certain angle with the horizontal plane;

[0007] The fan module includes multiple fans arranged at the left and right ends of the radiator. The air outlet of the fan is in the same-side horizontal direction as the cooling air, and at the same time, the hot air discharged from the fan is opposite to the flow direction of the cooling air;

[0008] The air duct module includes a deflector and an air duct; among them, the air duct inlet is located at the outlet of the low-temperature radiator; the air duct outlet is arranged at the inlet of the fans located on both sides of the radiator; the deflector is symmetrically arranged below the symmetric high-temperature radiator and extends all the way to the inlet of the fans;

[0009] There is a cooling air inlet and outlet turbulent flow interval area between the air duct module and the radiator module.

[0010] Preferably, the flat tubes of the radiator are provided with arrayed spoiler columns, and the spoiler columns are located at the center between adjacent straight fins.

[0011] Preferably, the spoiler columns are columnar, cylindrical, triangular prism or elliptical streamline column bodies.

[0012] Preferably, the included angle between the intercooler, the high-temperature radiator and the horizontal plane is 15 to 20 degrees.

[0013] Preferably, the radiator in the radiator module adopts a shell-and-tube heat exchanger.

[0014] Preferably, the radiator, the spoiler columns and the air duct are made of aluminum or aluminum alloy.

[0015] Preferably, the coolant of the radiator adopts ethylene glycol, propylene glycol, glycerol or high thermal conductivity nanofluid.

[0016] Preferably, the high thermal conductivity nanofluid adopts copper nanofluid, aluminum nanofluid, alumina nanofluid, zinc oxide nanofluid.

[0017] Preferably, the fan module adopts an air suction axial flow fan, a mixed flow fan.

[0018] The present invention also provides a heat dissipation method for the above system, including:

[0019] The cooling air is divided into two symmetric airflows after flowing through the low-temperature radiator, and sequentially passes through the symmetric intercooler and the symmetric high-temperature radiator, and exchanges heat with the coolant in the radiator; at the same time, the cooling air flow changes the incoming flow direction under the guidance of the intercooler and the high-temperature radiator;

[0020] After the cooling air flow enters the air duct, it further moves towards the fan under the guidance of the deflector, and finally is discharged into the atmospheric environment by the fan.

[0021] Beneficial effects:

[0022] (1) The present invention adopts a symmetric radiator design, constructs a W-shaped flow channel heat dissipation system, and the slow angle change guides the flow of the cooling air, greatly reducing the huge pressure loss caused by sudden corners. In addition, the built-in deflector also increases the uniformity of the cooling air flow rate, making up for the disadvantages of uneven air volume and large flow pressure loss in the same-side inlet and outlet of the air.

[0023] (2) The external array of spoiler columns on the flat tubes of the radiator adopted in the present invention guides the oncoming cooling air to both sides of the flat fins, changing the direction of the originally straight-through cooling air flow, forming several eddy currents, destroying the thermal boundary layer on the original flat fins, and at the same time increasing the heat transfer surface area on the air side of the flat tubes to achieve the effect of enhancing heat transfer.

[0024] (3) An inlet and outlet temperature difference spoiler interval area is arranged between the cooling air and the outlet of the fan in the present invention, which prevents the mutual interference of the inlet and outlet air on the same side. At the same time, the fan controller can be arranged at this position with a relatively low temperature, ensuring the safety and reliability of the fan.

[0025] (4) The present invention makes up for the design concept of the same-side inlet and outlet of the cooling air in the existing vehicle cooling system, increasing more possibilities and solutions for vehicle thermal layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1(a) is a general schematic diagram of the cooling system of the present invention; Figure 1(b) is a front view of the cooling system of the present invention.

[0027] Figure 2 is a schematic diagram of the arrangement of the guide plates in the air duct of the cooling system of the present invention

[0028] Figure 3(a) is a detailed schematic diagram of the inside of the radiator of the present invention; Figure 3(b) is a top view of the radiator of the present invention.

[0029] Figure 4(a) is the dot matrix columnar spoiler of the present invention; Figure 4(b) is the dot matrix cylindrical spoiler of the present invention, and Figure 4(c) is the dot matrix triangular prism spoiler of the present invention.

[0030] Among them, 1 - low-temperature radiator, 2 - low-temperature radiator coolant inlet, 3 - low-temperature radiator coolant outlet, 4 - symmetric intercooler, 5 - symmetric high-temperature radiator, 6 - front edge of radiator support, 7 - air duct, 8 - symmetric radiator coolant connection channel, 9 - anti-spoiler interval area, 10 - axial flow fan, 11 - radiator coolant flat tube, 12 - radiator flat fin, 13 - spoiler column, 14 - guide plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following examples are given in conjunction with the drawings to describe the present invention in detail.

[0032] The present invention provides a symmetric vehicle cooling system based on dot matrix spoiler and W-shaped flow channel. As shown in Figure 1, it includes a radiator module, an air duct module and a fan module;

[0033] The radiator module includes a low-temperature radiator, two intercoolers, and two high-temperature radiators arranged successively from top to bottom. Among them, the intercoolers and high-temperature radiators are both symmetrically distributed left and right and are at a certain angle to the horizontal plane, and are fixed by triangular support members arranged at the center of symmetry.

[0034] Coolant flows through the flat tubes of the radiator; the coolants of the radiators symmetrically arranged on the left and right sides are connected by several pipes in the middle.

[0035] All radiators in the radiator module adopt shell-and-tube heat exchangers. The heat exchange mode between the cooling air and the high-temperature coolant is shell-and-tube cross-flow, which increases the heat transfer temperature difference between the cooling air side and both sides of the coolant.

[0036] The fan module includes multiple fans arranged at the left and right ends of the radiator. The air outlets of the fans are on the same side as the cooling air flow, and the hot air discharged from the fans is in the opposite direction to the incoming flow direction of the cooling air flow.

[0037] The air duct module includes a deflector and an air duct, as Figure 2 shown. The deflector is symmetrically arranged below the symmetric high-temperature radiator and extends to the inlet of the fan; the air duct inlet is located at the outlet of the low-temperature radiator; the air duct outlet is arranged at the inlets of the fans located on both sides of the radiator; the air duct generally presents a W shape. Starting from the intercooler, the installation angle of the radiator forms a certain angle (15° - 20°) with the horizontal plane, and the slow angle change guides the flow of the cooling air, reducing the large pressure loss caused by sudden turning angles. The arrangement of the deflector makes the distribution of the cooling air more uniform.

[0038] There is a cooling air inlet and outlet turbulent flow interval area between the air duct module and the radiator module, which prevents the mutual interference of the air inlet and outlet on the same side. A fan controller can be installed in this interval area.

[0039] Furthermore, arrayed turbulators are arranged outside the flat tubes of the radiators in the radiator module. As shown in Figure 3, the turbulators are evenly distributed in the middle of adjacent flat fins. The turbulators guide the oncoming cooling air to the flat fins on both sides, changing the direction of the originally straight-through cooling air flow, forming several eddies, destroying the heat flow boundary layer on the original flat fins, enhancing the disturbance and strengthening the heat transfer. Among them, the turbulators can adopt columnar, cylindrical, triangular prism, elliptical streamline columnar bodies, etc., as shown in Figure 4.

[0040] Preferably, the radiator, turbulators, and air duct are made of aluminum, aluminum alloy, etc., and have the characteristics of light weight and high thermal conductivity.

[0041] The coolant in the flat tubes of the radiator can adopt ethylene glycol, propylene glycol, glycerol, or high-thermal-conductivity nanofluids, such as copper nanofluids, aluminum nanofluids, alumina nanofluids, zinc oxide nanofluids, etc.

[0042] The fan uses an air suction type axial flow fan, mixed flow fan, etc.

[0043] The present invention also provides a heat exchange method for the above heat dissipation system, including the following processes:

[0044] After the cooling air passes through the low-temperature radiator from top to bottom, it is divided into two airflows on the left and right by the front edge 6 of the radiator support. The flow of the two airflows on both sides greatly improves the uniformity of the cooling air and avoids the problem of uneven air distribution caused by the large windward area of the radiator. Subsequently, the cooling airflows sequentially pass through the symmetrical intercooler and high-temperature radiator. During this period, the low-temperature cooling air and the high-temperature coolant in the flat tubes of the radiator cross-flow in a partition heat exchange manner, increasing the logarithmic mean temperature difference of heat transfer between the two; at the same time, the array of spoiler columns outside the flat tubes guides the oncoming cooling air to both sides of the straight fins, changing the direction of the originally straight-through cooling airflow, forming several eddies, destroying the thermal boundary layer on the original straight fins, and enhancing the disturbance; the array of spoiler columns on the air side of the flat tubes also increases its heat transfer surface area and reduces the convective heat resistance on its air side, jointly achieving the effect of enhancing heat transfer, so that the temperature of the coolant at the outlet of the flat tubes can be further reduced.

[0045] During the process of the cooling airflow passing through the low-temperature radiator, intercooler, and high-temperature radiator, under the guidance of the intercooler and high-temperature radiator at a certain angle with the horizontal plane, the flow angle of the cooling airflow is slowly changed, greatly reducing the huge pressure loss caused by sudden turning angles. After entering the air duct, the cooling air further flows towards the fan under the guidance of the deflector and is finally discharged into the atmospheric environment by the fan, realizing the same-side inlet and outlet of the cooling airflow. The deflector also increases the uniformity of the cooling air flow.

[0046] The heat dissipation system of the present invention uses a symmetrical intercooler and high-temperature radiator to form a W-shaped flow channel, and the slow large-angle guidance reduces the flow loss. A cooling air inlet and outlet spoiler spacer is provided between the cooling air and the fan outlet, preventing the mutual interference of the same-side inlet and outlet air, and at the same time, the relatively low temperature at this position can be used to arrange the fan controller, ensuring the safety and reliability of the fan.

[0047] In summary, the above is only the preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A symmetric vehicle cooling system based on dot matrix flow disturbance and W-shaped flow channels, characterized in that Including: A radiator module, an air duct module, and a fan module; Among them, the radiator module includes a low-temperature radiator, a symmetric intercooler, and a symmetric high-temperature radiator arranged in sequence along the incoming flow direction of the cooling air; and the intercooler and the high-temperature radiator form a certain angle with the horizontal plane; The fan module includes multiple fans arranged at the left and right ends of the radiator. The hot air discharged by the fans is on the same side of the cooling air flow and in opposite directions; The air duct module includes a deflector and an air duct; among them, the air duct inlet is located at the outlet of the low-temperature radiator; the air duct outlet is arranged at the inlets of the fans located on both sides of the radiator; the deflector is symmetrically arranged below the symmetric high-temperature radiator and extends straight to the inlets of the fans; There is a cooling air inlet and outlet turbulent flow interval area between the air duct module and the radiator module.

2. The system according to claim 1, wherein Arrayed turbulent flow columns are provided on the flat tubes of the radiator, and the turbulent flow columns are located in the center of adjacent flat fins.

3. The system according to claim 2, wherein The turbulent flow columns are columnar, cylindrical, triangular prism-shaped, or elliptical streamline-shaped columns.

4. The system according to claim 1, wherein The angle between the intercooler, the high-temperature radiator and the horizontal plane is 15 to 20 degrees.

5. The system according to claim 1, wherein The radiator in the radiator module adopts a shell-and-tube heat exchanger.

6. The system according to claim 1, wherein The radiator, the turbulent flow columns, and the air duct are made of aluminum or aluminum alloy.

7. The system according to claim 1, wherein The coolant of the radiator adopts ethylene glycol, propylene glycol, glycerol, or a high thermal conductivity nanofluid.

8. The system according to claim 7, wherein The high thermal conductivity nanofluid adopts copper nanofluid, aluminum nanofluid, alumina nanofluid, or zinc oxide nanofluid.

9. The system according to claim 1, characterized in that, The fan module adopts an air suction axial flow fan or a mixed flow fan.

10. The heat dissipation method of the system according to any one of claims 1 to 9, characterized in that After the cooling air flows through the low-temperature radiator, it is divided into two symmetric air flows, and sequentially passes through the symmetric intercooler and the symmetric high-temperature radiator, and exchanges heat with the coolant in the radiator; at the same time, the cooling air flow changes the incoming flow direction under the guidance of the intercooler and the high-temperature radiator; After the cooling air flow enters the air duct, it further flows towards the fan under the guidance of the deflector, and finally is discharged into the atmospheric environment by the fan.

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