A ventilation and heat dissipation device

Abstract

This utility model relates to a ventilation and heat dissipation device, including a housing with an inner cavity for accommodating components to be cooled. The housing has an air inlet and an air outlet communicating with the inner cavity. The air outlet and air inlet are located on the same side plate of the housing. The air outlet has a first guide plate, and the air inlet has a second guide plate. Along the airflow direction, the downstream portion of the first guide plate is a first inclined plate sloping upwards from the inside out, and the upstream portion of the second guide plate is a second inclined plate sloping away from the air outlet from the inside out. This utility model, through the arrangement of the first and second guide plates, prevents the airflow entering the air inlet from converging with the airflow exiting the air outlet, thereby preventing hot air backflow and ensuring effective heat dissipation.

Description

Technical Field

[0001] This utility model relates to a ventilation and heat dissipation device. Background Technology

[0002] Compared to traditional fuel vehicles where thermal management targets systems such as the engine, transmission, and air conditioning, thermal management of new energy vehicles adds thermal management targets such as the power battery and electric drive.

[0003] Thermal management plays a crucial role in addressing the heat generated by components in pure electric vehicles and energy storage systems (such as energy storage cabinets). This is especially true in situations requiring additional heating, rapid charging, and battery operation within a narrow temperature window. Maximizing charging power further drives the demand for precise thermal management. Effective thermal management can extend battery life and prevent risks such as thermal runaway, efficiency degradation, and even motor burnout. Effective thermal management requires a highly efficient heat exchange cycle structure (i.e., a heat exchanger) to ensure continuous and stable thermal management.

[0004] For example, the Chinese invention patent application CN202011525325.3 (publication number CN112582705A) discloses a ventilation and heat dissipation device for a new energy vehicle battery pack. This ventilation and heat dissipation device includes a housing for accommodating the battery pack and a cover that matches the housing. The housing and the cover form a battery pack accommodating cavity. The housing includes a bottom plate and a side plate, the bottom of which is fixed to the upper surface of the bottom plate. The bottom plate is provided with a downward-opening high-temperature air inlet, and the side plate is provided with a low-temperature air inlet. An air guide assembly is installed on the low-temperature air inlet. The cover is provided with an upward-opening exhaust port.

[0005] Because the air inlet and outlet of this ventilation and heat dissipation device are located on the casing and the cover respectively, and the distance between the air inlet and outlet is relatively large, the airflow entering and leaving the casing is unlikely to converge and interfere. However, for some ventilation and heat dissipation devices, due to structural design or space constraints, the air inlet and outlet can only be located on the same side panel of the casing, and the distance between the air inlet and outlet is relatively small. In this case, the airflow entering and leaving the casing is prone to converge, which can easily cause hot air recirculation and affect the heat dissipation effect.

[0006] In addition, after prolonged use, fibrous material tends to accumulate at the air inlet and outlet, affecting airflow and thus heat dissipation. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a ventilation and heat dissipation device that avoids the convergence of airflow entering the box and airflow leaving the box, in light of the current state of the technology.

[0008] The technical solution adopted by this utility model to solve the technical problem is as follows: a ventilation and heat dissipation device, including a box, the box having an inner cavity for accommodating the component to be dissipated, the box having an air inlet and an air outlet communicating with the inner cavity, characterized in that the air outlet and the air inlet are arranged on the same side plate of the box, the air outlet having a first air guide plate, the air inlet having a second air guide plate, along the air flow direction, the downstream part of the first air guide plate is a first inclined plate that slopes upward from the inside to the outside, and the upstream part of the second air guide plate is a second inclined plate that slopes upward from the inside to the outside away from the air outlet.

[0009] Preferably, along the direction of airflow, the upstream part of the first guide plate is a first horizontal plate connected to the lower end of the first inclined plate. The first horizontal plate extends in the horizontal direction and guides the airflow toward the first inclined plate, so that the airflow flows out along the first inclined plate.

[0010] Preferably, along the direction of airflow, the downstream portion of the second air guide plate is a second horizontal plate connected to the inner end of the second inclined plate. The second horizontal plate extends horizontally and guides the airflow further into the housing.

[0011] To ensure effective airflow guidance, preferably, there are multiple first air guide plates arranged at vertical intervals; and multiple second air guide plates arranged at horizontal intervals.

[0012] In the above scheme, there are two air inlets, located on both sides of the air outlet in the horizontal direction.

[0013] To improve the heat dissipation effect on the components to be cooled, the enclosure also includes a shell. One side of the shell is open, facing the air outlet and surrounding its outer perimeter. The components to be cooled are installed within the shell. The shell has an air vent connecting the inner cavity of the enclosure to the interior of the shell, with the components located downstream of the air vent. This positions the components in the necessary airflow path for effective heat dissipation.

[0014] In order to ensure that the airflow enters the housing and cools the components to be cooled, and then flows out from the air outlet without flowing back into the housing and mixing with the cold airflow entering from the air inlet, thus affecting the cooling effect of the cold airflow on the components to be cooled, the open end of the housing is sealed to the inner wall of the housing by a sealing ring.

[0015] To prevent debris from entering the housing, a filter screen is installed on the housing at the position corresponding to the air inlet, and the filter screen blocks the air inlet.

[0016] After prolonged use, debris will clog the mesh of the filter screen, resulting in a decrease in filtration efficiency. Preferably, the filter screen is detachably installed on the housing, so that the filter screen can be removed for cleaning or replacement after the filtration efficiency decreases.

[0017] In the above solution, the ventilation and heat dissipation device also includes a fan for driving airflow from the air inlet to the air outlet. The fan is located between the component to be cooled and the air outlet. The fan has a large blowing force at the air outlet, which can blow away debris at the air outlet to prevent the air outlet from being blocked.

[0018] Compared with the prior art, the advantages of this utility model are as follows: The air inlet and air outlet of this utility model are set on the same side plate of the housing, so the distance between the air inlet and air outlet is relatively small. In order to prevent the airflow at the air inlet and air outlet from converging and causing hot airflow to flow back, which would affect the heat dissipation effect of the heat dissipation components, this utility model sets a first air guide plate in the air outlet. The downstream part of the first air guide plate is a first inclined plate, which uses the physical property of hot airflow to guide the hot airflow upward. The upstream part of the second air guide plate is a second inclined plate. Because the second inclined plate is inclined away from the air outlet, the airflow at the air inlet will flow into the housing from the air inlet under the guidance and shielding effect of the second inclined plate, and will not flow to the air outlet to converge with the hot airflow, causing the hot airflow to flow back.

[0019] In summary, this utility model, through the arrangement of the first and second air guide plates, prevents the airflow entering the air inlet and the airflow exiting the air outlet from converging, thereby preventing the backflow of hot air and ensuring the heat dissipation effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure from another direction;

[0022] Figure 3 for Figure 2 A schematic diagram of the decomposition process;

[0023] Figure 4 for Figure 1 A sectional view;

[0024] Figure 5 for Figure 4 Enlarged view of point A;

[0025] Figure 6 for Figure 1 Another sectional view. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be understood that, unless otherwise stated, "multiple" means two or more, and the terms "upper," "lower," "left," "right," "top," "bottom," "front," "rear," etc., indicate the orientation or positional relationship based on the direction or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an adhesive connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model patent based on the specific circumstances.

[0029] like Figures 1-6 As shown, the ventilation and heat dissipation device of this preferred embodiment includes a housing 1 (only one side plate of the housing 1 is shown in the drawing) and a fan 2. The housing 1 has an inner cavity for accommodating the component to be cooled, and the housing 1 is provided with an air inlet 11 and an air outlet 12 that communicate with the inner cavity.

[0030] In this embodiment, the air outlet 12 and the air inlet 11 are located on the same side panel of the housing 1, and the air outlet 12 and the air inlet 11 are spaced apart along the horizontal direction. The air outlet 12 is provided with a first air guide plate 3, and the air inlet 11 is provided with a second air guide plate 4. In order to ensure the airflow guiding effect, there are multiple first air guide plates 3, which are spaced apart along the vertical direction; there are multiple second air guide plates 4, which are spaced apart along the horizontal direction. In this embodiment, there are two air inlets 11, which are located on both sides of the air outlet 12 in the horizontal direction.

[0031] like Figure 5As shown, along the direction of airflow, the downstream part of the first air guide plate 3 is a first inclined plate 31 that slopes upward from the inside to the outside ("inside" means close to the inside of the housing 1, and "outside" means away from the inside of the housing 1). The upstream part of the first air guide plate 3 is a first horizontal plate 32 connected to the lower end of the first inclined plate 31. The first horizontal plate 32 extends horizontally and guides the airflow toward the first inclined plate 31, so that the airflow flows out along the first inclined plate 31. Utilizing the physical property that hot air flows upward, the first inclined plate 31 guides the hot airflow upward.

[0032] like Figure 6 As shown, the upstream part of the second air guide plate 4 is a second inclined plate 41 that tilts from the inside out toward the side away from the air outlet 12 ("inside" means close to the inside of the housing 1, and "outside" means away from the inside of the housing 1). The downstream part of the second air guide plate 4 is a second horizontal plate 42 connected to the inner end of the second inclined plate 41. The second horizontal plate 42 extends in the horizontal direction. Because the second inclined plate 41 tilts toward the side away from the air outlet 12, the airflow from the air inlet 11 will flow into the housing 1 from the air inlet 11 under the guidance and shielding effect of the second inclined plate 41, and will not flow to the air outlet 12 to meet the hot airflow, causing the hot airflow to flow back. The second horizontal plate 42 will continue to guide the airflow toward the housing 1.

[0033] The housing 1 is also provided with a shell 5. One side of the shell 5 is open, and the open end faces the air outlet 12 and surrounds the outer periphery of the air outlet 12. The component to be cooled 6 is installed in the shell 5. The shell 5 is provided with an air passage 51 that connects the inner cavity of the housing 1 and the inside of the shell 5. The component to be cooled 6 is located downstream of the air passage 51 so that the component to be cooled 6 is located on the necessary flow path of the airflow, so as to dissipate heat from the component to be cooled 6.

[0034] In order to ensure that the airflow enters the housing 5 and dissipates heat from the heat-dissipating component 6, and then flows out from the air outlet 12, without flowing back into the housing 1 and mixing with the cold airflow entering from the air inlet 11, thus affecting the heat dissipation effect of the cold airflow on the heat-dissipating component 6, the open end of the housing 5 is sealed to the inner wall of the housing 1 by a sealing ring 52.

[0035] The component 6 to be cooled can be any component in a car or other equipment. For example, the battery in a car needs to be cooled by a heat exchanger. In order to ensure the cooling effect of the heat exchanger on the battery, the heat exchanger can dissipate heat through the ventilation and heat dissipation device of this embodiment. The heat exchanger is the component 6 to be cooled in this embodiment.

[0036] The fan 2 is used to drive airflow from the air inlet 11 towards the air outlet 12. The fan 2 is located between the heat-dissipating component 6 and the air outlet 12, and the fan 2 adopts the existing structure. The position of the fan 2 provides a greater blowing force at the air outlet 12, which can blow away debris at the air outlet 12 and prevent the air outlet 12 from being blocked.

[0037] A filter 7 is installed on the housing 1 at the position corresponding to the air inlet 11. The filter 7 blocks the air inlet 11 to prevent debris from entering the housing 1. However, after prolonged use, debris will clog the mesh of the filter 7, resulting in a decrease in filtration efficiency. Therefore, the filter 7 can be detachably installed on the housing 1. This way, when the filtration efficiency of the filter 7 decreases, the filter 7 can be removed for cleaning or replacement, preventing debris from accumulating at the air inlet 11 and affecting airflow.

[0038] In this embodiment, as Figure 6 As shown, the housing 1 is provided with a U-shaped component 8. The two opposite side arms 81 of the component 8 are located on both sides of the air inlet 11 in the horizontal direction, and the bottom arm 82 of the component 8 is located below the air inlet 11.

[0039] The cross-sections of the side arm 81 and bottom arm 82 of component 8 both include a connected first side 83 and a second side 84. One end of the first side 83 is connected to the housing 1, and the other end extends away from the housing 1. The second side 84 is formed by bending from the other end of the first side 83 toward the location of the air inlet 11. The side walls of component 8 and housing 1 together form a positioning groove 85.

[0040] The filter screen 7 can slide down along the side of the positioning groove 85 to the bottom of the positioning groove 85 and be embedded in the bottom of the positioning groove 85. The filter screen 7 can also slide up along the side of the positioning groove 85 until it is completely removed from the positioning groove 85.

Claims

1. A ventilation and heat dissipation device, comprising a housing (1), the housing (1) having an inner cavity for accommodating a component (6) to be cooled, the housing (1) being provided with an air inlet (11) and an air outlet (12) communicating with the inner cavity, characterized in that, The air outlet (12) and air inlet (11) are located on the same side plate of the housing (1). The air outlet (12) is provided with a first air guide plate (3), and the air inlet (11) is provided with a second air guide plate (4). Along the direction of airflow, the downstream part of the first air guide plate (3) is a first inclined plate (31) that is inclined upward from the inside to the outside, and the upstream part of the second air guide plate (4) is a second inclined plate (41) that is inclined from the inside to the outside towards the side away from the air outlet (12).

2. The ventilation and heat dissipation device according to claim 1, characterized in that: Along the direction of airflow, the upstream part of the first guide plate (3) is a first horizontal plate (32) connected to the lower end of the first inclined plate (31), and the first horizontal plate (32) extends in the horizontal direction.

3. The ventilation and heat dissipation device according to claim 1, characterized in that: Along the direction of airflow, the downstream part of the second guide plate (4) is a second horizontal plate (42) connected to the inner end of the second inclined plate (41), and the second horizontal plate (42) extends in the horizontal direction.

4. The ventilation and heat dissipation device according to claim 1, characterized in that: There are multiple first air guide plates (3) arranged at intervals along the vertical direction; there are multiple second air guide plates (4) arranged at intervals along the horizontal direction.

5. The ventilation and heat dissipation device according to claim 1, characterized in that: There are two air inlets (11), located on both sides of the air outlet (12) in the horizontal direction.

6. The ventilation and heat dissipation device according to any one of claims 1 to 5, characterized in that: The housing (1) is also provided with a shell (5), one side of which is open, the open end facing the air outlet (12) and surrounding the outer periphery of the air outlet (12). The heat dissipation component (6) is installed in the shell (5). The shell (5) is provided with an air passage (51) that connects the inner cavity of the housing (1) and the inside of the shell (5). The heat dissipation component (6) is located downstream of the air passage (51).

7. The ventilation and heat dissipation device according to claim 6, characterized in that: The open end of the shell (5) is sealed to the inner wall of the box (1) by a sealing ring (52).

8. The ventilation and heat dissipation device according to any one of claims 1 to 5, characterized in that: The housing (1) is provided with a filter (7) at the position corresponding to the air inlet (11), and the filter (7) blocks the air inlet (11).

9. The ventilation and heat dissipation device according to claim 8, characterized in that: The filter (7) can be detachably installed on the housing (1).

10. The ventilation and heat dissipation device according to any one of claims 1 to 5, characterized in that: It also includes a fan (2) for driving airflow from the air inlet (11) toward the air outlet (12), the fan (2) being disposed between the heat-dissipating component (6) and the air outlet (12).

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