Fly water blocking structure of automobile air conditioner

Abstract

The utility model discloses a flying water blocking structure of an automobile air conditioner, which is characterized in that when the automobile air conditioner refrigerates, water vapor in air flow passes through a heat exchange core body to be condensed into water drops on fins, flows downwards under the action of gravity to be gathered into large water drops at the lower ends of the fins, and falls into a drainage groove to be drained; in order to solve the problem that a water baffle is vertically arranged on the air outlet side of the heat exchange core body in the drainage groove, and the upper edge of the water baffle is higher than the upper edge of the side wall, far away from the heat exchange core body, of the drainage groove, so that the large water drops can be separated from the fins easily and fly to the air outlet side along with the rapid air flow. The water baffle is made to directly face the area, close to the lower portion of the air outlet side, of the heat exchange core body on the air channel path, so that large water drops which break away from the fins and fly to the air outlet side along with airflow are blocked, the blocked large water drops can slide into the drainage groove again along the water baffle, the possibility of water flying is reduced, and the comfort of an automobile air conditioner can be improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of general vehicle heating, cooling or ventilation equipment, and specifically relates to a water spray barrier structure for automotive air conditioning. Background Technology

[0002] Automotive air conditioning is a system in a car used to regulate the temperature, humidity, and airflow inside the vehicle, such as... Figure 1 As shown, the automotive air conditioning system mainly includes an air intake box 1, an air supply box 2, and a heat exchange box 3 connected in sequence. The heat exchange box is equipped with an air inlet and an air outlet. The air outlets include a defrost vent 4, a front face air outlet 5, a front foot air outlet 6, a rear face air outlet 7, and a rear foot air outlet 8. The heat exchange box includes a rear housing 9 and a front housing 10 connected to each other. The rear housing has a main air duct, and the front housing has multiple secondary air ducts. One end of the main air duct is located at the connection between the rear housing and the front housing and is laterally connected to one end of each secondary air duct. The other end of the main air duct forms an air inlet and is used to connect to the air supply box. The other end of each secondary air duct forms an air outlet. A heat exchange core is vertically installed in the rear housing, along the path of the main air duct and located at the connection between the rear housing and the front housing. A heating core is installed in the front housing, along the path of some of the secondary air ducts. Each secondary air duct has multiple dampers to switch the air outlet status of each vent.

[0003] When the car interior needs cooling, dehumidification, or defrosting, the car's air conditioning system cools the air. The refrigerant undergoes a phase change and absorbs heat through the heat exchange core of the evaporator, causing the temperature of the heat exchange core to drop rapidly, thus cooling the airflow passing through it. As the air passes through the heat exchange core for cooling, water vapor in the air condenses into water droplets that adhere to the fins of the heat exchange core. Therefore, a drain groove is provided at the bottom of the rear housing below the heat exchange core. The drain groove has a drain outlet at the bottom and a drain pipe interface is formed on the outside of the rear housing. Water droplets on the fins can collect and slide into the drain groove under the influence of gravity and be discharged. However, some large water droplets that collect and slide to the lower part of the heat exchange core but have not yet fallen into the drain groove are prone to separating from the fins when the vehicle suddenly accelerates or shakes violently. These droplets are then carried by the airflow and fly out from the rear air vents on the lower part of the heat exchange box, entering the car or landing on the rear passengers, which has a significant impact on the comfort of the car's air conditioning system. Currently, although processes such as hydrophilic treatment have improved the water droplet problem in heat exchange cores, the pursuit of cooling capacity and airflow has led to increasingly dense fins and greater water vapor condensation in existing heat exchange cores. Furthermore, the airflow speed is also increasing. This results in large water droplets accumulating at the lower part of the heat exchange core easily detaching from the fins and entering the vehicle or landing on rear passengers during bumpy rides or other special circumstances. Chinese patent CN203837224U discloses a drainage structure at the bottom of the evaporator core of an automotive air conditioning unit. This patent features a stepped baffle plate between the lower end of the heat exchange core and the bottom of the drainage channel. By appropriately raising the heat exchange core, it prevents the core from affecting drainage and from being submerged in water, ensuring good water conduction while meeting the requirements for heat exchange core usage. However, this structure fails to solve the problem of large water droplets at the lower part of the heat exchange core easily detaching from the fins and flying out with the airflow. Therefore, further optimization of the existing heat exchange box design is needed. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a water spray barrier structure for automotive air conditioning, which solves the technical problem that large water droplets at the lower part of the heat exchange core are easily sprayed out with the airflow, thereby reducing the possibility of water spray and improving the comfort of automotive air conditioning.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A water-blocking structure for an automotive air conditioner includes a heat exchange box, which contains an air duct and a plate-shaped, vertically arranged heat exchange core. An air inlet and an air outlet are formed at both ends of the air duct on the heat exchange box, respectively. The air duct extends through the heat exchange core to adjust the outlet air temperature. A drainage groove is formed at the bottom of the heat exchange box, and the lower end of the heat exchange core is located within the drainage groove. A baffle plate with a horizontal dimension corresponding to the width of the heat exchange core is vertically arranged within the drainage groove. The baffle plate is located on the side of the heat exchange core facing the air outlet, with its upper edge higher than the lower end of the fins of the heat exchange core and the upper edge of the side wall of the drainage groove away from the heat exchange core, but lower than the upper edge of the air duct at its location.

[0007] Furthermore, the air duct includes a main air duct and multiple secondary air ducts. One end of the main air duct is connected to one end of each of the secondary air ducts. The other end of the main air duct forms an air inlet, and the other end of the secondary air duct forms one or more air outlets. The heat exchange core is located at the connection between the main air duct and each of the secondary air ducts.

[0008] Furthermore, the baffle plate includes a solid plate segment and a perforated plate segment connected vertically. The solid plate segment is located below the perforated plate segment. The upper edge of the solid plate segment is higher than the lower end of the fins of the heat exchange core and the upper edge of the side wall of the drainage groove away from the heat exchange core, and lower than the upper edge of the air duct at its location.

[0009] Furthermore, the baffle also includes a reinforcing frame that connects and surrounds the solid plate segment and the perforated plate segment. The inner side of the reinforcing frame has transverse reinforcing ribs and multiple transversely spaced vertical reinforcing ribs. The solid plate segment and the perforated plate segment are respectively connected below and above the transverse reinforcing ribs.

[0010] Furthermore, vertical slots are formed on both sides of the water baffle inside the heat exchange box, with the two ends of the water baffle located in the vertical slots at the corresponding ends.

[0011] Furthermore, the bottom of the drainage trough near the two horizontal ends of the baffle plate protrudes upward to form a support platform, and the bottom of the drainage trough near the middle of the baffle plate protrudes upward to form a support plate. The lower edge of the baffle plate abuts against the support plate and the two support platforms respectively. The support plate has a hook and is connected to the lower edge of the reinforcing frame by the hook.

[0012] Furthermore, a drain outlet is provided at the bottom of the drain trough and a drain pipe interface is formed on the outside of the heat exchange box. Multiple reinforcing plates are formed by the upward protrusion of the bottom of the drain trough. The side wall of the drain trough near the air inlet has an upward stepped surface, and the lower end of the heat exchange core abuts against the stepped surface.

[0013] Furthermore, the mesh size of the perforated plate segment is 100-300 mesh.

[0014] Furthermore, the vertical height of the baffle plate is H, and H is 10mm-30mm; the distance between the upper edge of the baffle plate and the heat exchange core is L, and L is 6mm-10mm; the vertical distance between the upper edge of the solid plate section and the lower end of the fins of the heat exchange core is H1, and H1 < 10mm; the vertical distance between the upper edge of the solid plate section and the upper edge of the side wall of the drainage trough near the air outlet is H2, and H2 < 8mm.

[0015] Furthermore, the baffle plate is inclined at an angle α in the direction away from the heat exchange core, and α < 2°.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The water splash barrier structure for automotive air conditioning described in this utility model includes a water baffle vertically installed on the air outlet side of the heat exchange core within the drainage groove. The upper edge of the water baffle is higher than the upper edge of the side wall of the drainage groove away from the heat exchange core, so that the water baffle is directly opposite the lower area of ​​the air outlet side of the heat exchange core in the air duct path. This effectively blocks large water droplets that detach from the fins and fly towards the air outlet side with the airflow. The blocked large water droplets will slide back into the drainage groove along the water baffle. This effectively solves the problem that large water droplets in the lower part of the heat exchange core are easily flown out with the airflow, which helps to reduce the possibility of water splashing and improves the comfort of automotive air conditioning.

[0018] 2. The water-splashing structure of the car air conditioner described in this utility model consists of a water-splashing plate divided into a solid plate segment and a mesh plate segment connected vertically. The solid plate segment ensures that large water droplets detaching from the lower end of the fins are completely blocked, while the mesh plate segment can further reduce the possibility of water splashing without significantly affecting the airflow.

[0019] 3. The water baffle structure of the automotive air conditioner described in this utility model is an independent component from the rear shell of the heat exchange box, which facilitates processing and manufacturing and allows for selection based on the working conditions of the heat exchange box and the vehicle. The water baffle is horizontally limited by a vertical slot and vertically limited by a hook, so as to stably install the water baffle in the drainage channel. The water baffle is supported by a support plate and a support platform above the bottom of the drainage channel, which not only avoids the water baffle from affecting the drainage of the drainage channel, but also reduces the vertical dimension of the water baffle and improves the structural strength. Attached Figure Description

[0020] Figure 1 This is a perspective view of the dual-layer flow air conditioning structure described in the background art;

[0021] Figure 2 This is a top view of the heat exchange box described in the embodiment;

[0022] Figure 3 This is a side view of the heat exchange box described in the embodiment;

[0023] Figure 4 for Figure 2 A schematic diagram of the cross-section along the middle AA;

[0024] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is a perspective view of the rear housing, heat exchanger, and baffle plate described in the embodiment;

[0026] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0027] Figure 8 This is a perspective view of the rear housing described in the embodiment;

[0028] The components include: air inlet box 1, air supply box 2, heat exchange box 3, defrost vent 4, front air inlet for face blowing 5, front air inlet for foot blowing 6, rear air inlet for face blowing 7, rear air inlet for foot blowing 8, rear shell 9, front shell 10, heat exchange core 11, drainage trough 12, baffle plate 13, main air duct 14, secondary air duct 15, drain outlet 16, drain pipe interface 17, reinforcing plate 18, stepped surface 19, solid plate section 20, perforated plate section 21, reinforcing frame 22, horizontal reinforcing rib 23, vertical reinforcing rib 24, vertical slot 25, support platform 26, support plate 27, and hook 28. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example:

[0031] Please see Figure 2 , Figure 3 and Figure 4 A water-blocking structure for an automotive air conditioner includes a heat exchange box 3. The heat exchange box 3 has an air duct and a plate-shaped, vertically arranged heat exchange core 11. The two ends of the air duct form an air inlet and an air outlet on the heat exchange box 3, respectively. The extension path of the air duct passes through the heat exchange core 11 to adjust the outlet air temperature. A drainage groove 12 is formed at the bottom of the heat exchange box 3, and the lower end of the heat exchange core 11 is located in the drainage groove 12. A baffle plate 13 with a horizontal dimension corresponding to the width of the heat exchange core 11 is vertically arranged in the drainage groove 12. The baffle plate 13 is located on the side of the heat exchange core 11 facing the air outlet. The upper edge of the baffle plate 13 is higher than the lower end of the fins of the heat exchange core 11 and the upper edge of the side wall of the drainage groove 12 away from the heat exchange core 11, and lower than the upper edge of the air duct at its location.

[0032] The water-blocking structure for automotive air conditioning described in this utility model addresses the issue that during air conditioning cooling, water vapor in the airflow condenses into water droplets on the fins of the heat exchange core 11. These droplets flow downwards under gravity and accumulate at the lower end of the fins, forming larger droplets that fall into the drain trough 12 for discharge. When the car suddenly accelerates or shakes violently, the water droplets that haven't yet accumulated and enlarged on the fins are less affected by gravity and have a smaller surface area exposed to airflow, thus preventing them from easily detaching from the fins. However, some of the larger water droplets that haven't yet fallen into the drain trough 12 easily detach from the fins and fly towards the air outlet with the rapid airflow. Therefore, this utility model includes a water-blocking plate 13 vertically installed inside the drain trough 12 on the air outlet side of the heat exchange core 11, and... The upper edge of the baffle plate 13 is higher than the upper edge of the side wall of the drain groove 12 away from the heat exchange core 11, so that the baffle plate 13 is directly facing the lower part of the air outlet side of the heat exchange core 11 in the air duct path, thereby blocking the large water droplets that detach from the fins and fly to the air outlet side with the airflow. The blocked large water droplets will slide back into the drain groove 12 along the baffle plate 13. This can effectively solve the problem that large water droplets in the lower part of the heat exchange core 11 are easy to fly out with the airflow, which helps to reduce the possibility of water splashing and improves the comfort of the car air conditioning.

[0033] Please see Figure 2 , Figure 3 and Figure 4 In this embodiment, the heat exchange box 3 includes a rear shell 9 and a front shell 10 connected together. The air inlet is located on the rear shell 9, and the air outlet is located on the front shell 10. The air outlet includes a defrost air outlet 4, a front air outlet for face blowing 5, a front air outlet for feet blowing 6, a rear air outlet for face blowing 7, and a rear air outlet for feet blowing 8. The rear air outlet for face blowing 7 and the rear air outlet for feet blowing 8 are located at the lowest position on the heat exchange box 3. The air duct includes a main air duct 14 and multiple secondary air ducts 15. The main air duct 14 is located inside the rear shell 9, and the secondary air ducts 15 are located inside the front shell 10. One end of the main air duct 14 is connected to one end of each of the secondary air ducts 15, and the other end of the main air duct 14 is connected to the air inlet. The other end of the secondary air ducts 15 is connected to one or more air outlets. The heat exchange core 11 is located on the path of the main air duct 14 and at the connection between the rear shell 9 and the front shell 10, that is, the heat exchange core 11 is located at the connection between the main air duct 14 and each of the secondary air ducts 15. Thus, as Figure 4 and Figure 5 As shown, the rear air vent 7 and the rear foot air vent 8 are connected to the lowest secondary air duct 15. The water baffle 13 is located at the connection between the lowest secondary air duct 15 and the main air duct 14, thereby blocking water from splashing from the heat exchange core 11 and preventing water droplets from flying out through the rear air vent 7 and the rear foot air vent 8, entering the vehicle or landing on the rear passengers.

[0034] Please see Figure 5 and Figure 8The bottom of the drainage trough 12 is provided with a drainage port 16 and a drainage pipe interface 17 is formed on the outside of the heat exchange box 3. The bottom of the drainage trough 12 is raised upward to form multiple reinforcing plates 18. The side wall of the drainage trough 12 near the air inlet has an upward stepped surface 19, and the lower end of the heat exchange core 11 abuts against the stepped surface 19. In this way, the lower end of the heat exchange core 11 is higher than the bottom of the drainage trough 12, which can not only avoid the heat exchange core 11 from affecting drainage and being soaked in water, but also ensure the gas flow through the heat exchange core 11 and improve the utilization efficiency of the heat exchange core 11.

[0035] Please see Figure 5 and Figure 6 The baffle plate 13 includes a solid plate segment 20 and a mesh plate segment 21 connected vertically. The solid plate segment 20 is located below the mesh plate segment 21. The upper edge of the solid plate segment 20 is higher than the lower end of the fins of the heat exchange core 11 and the upper edge of the side wall of the drainage groove 12 away from the heat exchange core 11, and lower than the upper edge of the air duct at its location. In this way, at the lower end of the corresponding fins, the solid plate segment 20 completely blocks the airflow and water droplets from passing through, thereby reducing the possibility of water splashing. At a certain distance above the lower end of the fins, the mesh plate segment 21 blocks water droplets from passing through, which can further reduce the possibility of water splashing while avoiding a significant impact on the airflow.

[0036] Please see Figure 6 and Figure 7 The baffle plate 13 also includes a reinforcing frame 22 that connects and surrounds the solid plate segment 20 and the perforated plate segment 21. The inner side of the reinforcing frame 22 has transverse reinforcing ribs 23 and multiple transversely spaced vertical reinforcing ribs 24. The solid plate segment 20 and the perforated plate segment 21 are respectively connected below and above the transverse reinforcing ribs 23. This helps to improve the structural strength of the baffle plate 13 and prevent the baffle plate 13 from deforming under the impact of high-speed airflow. In this embodiment, the perforated plate segment 21 is made of nylon wire mesh and is integrally formed with the reinforcing frame 22 by injection molding.

[0037] Please see Figure 6 and Figure 7 The heat exchange box 3 has vertical slots 25 formed on both sides of the baffle plate 13, with the two ends of the baffle plate 13 located in the vertical slots 25 at their respective ends; please refer to Figure 7 and Figure 8 The bottom of the drainage trough 12 has two horizontal ends near the baffle plate 13 that protrude upward to form support platforms 26. The bottom of the drainage trough 12 has a horizontal middle part near the baffle plate 13 that protrudes upward to form a support plate 27. The lower edge of the baffle plate 13 abuts against the support plate 27 and the two support platforms 26 respectively. The support plate 27 has a hook 28 and is connected to the lower edge of the reinforcing frame 22 by the hook 28.

[0038] Thus, the baffle plate 13 is an independent component from the rear shell 9 of the heat exchange box 3, which facilitates processing and manufacturing and allows for selection based on the working conditions of the heat exchange box 3 and the vehicle. The baffle plate 13 is horizontally limited by the vertical slot 25 and vertically limited by the hook 28, so as to stably install the baffle plate 13 in the drainage channel 12. The baffle plate 13 is supported by the support plate 27 and the support platform 26 above the bottom of the drainage channel 12, which not only avoids the baffle plate 13 from affecting the drainage of the drainage channel 12, but also reduces the vertical dimension of the baffle plate 13 and improves the structural strength.

[0039] In this embodiment, the mesh size of the perforated plate segment 21 is 100-300 mesh, so as to reduce wind resistance and prevent water droplets from flying out through the perforated plate segment 21; please refer to Figure 5 The vertical height of the baffle plate 13 is H, and H is 10mm-30mm. The distance between the upper edge of the baffle plate 13 and the heat exchange core 11 is L, and L is 6mm-10mm. The vertical distance between the upper edge of the solid plate section 20 and the lower end of the fins of the heat exchange core 11 is H1, and H1 < 10mm. The vertical distance between the upper edge of the solid plate section 20 and the upper edge of the side wall of the drain trough 12 near the air outlet is H2, and H2 < 8mm. This is to reduce the impact on the air volume of the heat exchange core 11 while effectively blocking splashing water. Please refer to [link / reference]. Figure 5 The baffle plate 13 is inclined at an angle α in the direction away from the heat exchange core 11, and α < 2°, so as to prevent the water droplets attached to the baffle plate 13 from sliding down and being discharged from the drain trough 12 under the action of gravity.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A water-splashing structure for an automotive air conditioner, comprising a heat exchange box, wherein the heat exchange box has an air duct and a plate-shaped, vertically arranged heat exchange core, an air inlet and an air outlet are respectively formed at both ends of the air duct on the heat exchange box, the extension path of the air duct passes through the heat exchange core to adjust the outlet air temperature, a drainage groove is formed at the bottom of the heat exchange box, and the lower end of the heat exchange core is located in the drainage groove; characterized in that: The water baffle is vertically arranged in the drain groove and has a transverse size corresponding to the width of the heat exchange core body, and the water baffle is located on the side of the heat exchange core body facing the air outlet, the upper edge of the water baffle is higher than the lower end of the fin of the heat exchange core body and the upper edge of the side wall of the drain groove away from the heat exchange core body, and is lower than the upper edge of the air duct at the position.

2. The water blocking structure for an automobile air conditioner according to claim 1, wherein: The air duct comprises a main air duct and a plurality of auxiliary air ducts, one end of the main air duct is in communication with one end of each auxiliary air duct, the other end of the main air duct forms an air inlet, and the other end of the auxiliary air duct forms one or more air outlets, and the heat exchange core body is located at the communication position of the main air duct and each auxiliary air duct.

3. The water blocking structure for an automobile air conditioner according to claim 1, wherein: The water baffle comprises a solid plate section and a mesh plate section connected vertically, the solid plate section is located below the mesh plate section, and the upper edge of the solid plate section is higher than the lower end of the fin of the heat exchange core body and the upper edge of the side wall of the drain groove away from the heat exchange core body, and is lower than the upper edge of the air duct at the position.

4. The water blocking structure of claim 3, wherein: The water baffle further comprises a reinforcing frame connected to and surrounding the solid plate section and the mesh plate section, the inner side of the reinforcing frame is provided with a transverse reinforcing rib and a plurality of transversely spaced vertical reinforcing ribs, and the solid plate section and the mesh plate section are connected below and above the transverse reinforcing rib respectively.

5. The water blocking structure for an automobile air conditioner according to claim 4, wherein: Vertical insertion slots are formed in the heat exchange box on the transverse two sides of the water baffle, and the transverse two ends of the water baffle are located in the vertical insertion slots at the corresponding ends respectively.

6. The water blocking structure for an automobile air conditioner according to claim 5, wherein: The bottom of the drain groove is upwardly protruded to form support tables near the transverse two ends of the water baffle, the bottom of the drain groove is upwardly protruded to form a support plate near the transverse middle of the water baffle, the lower edge of the water baffle is in abutment with the support plate and the two support tables respectively, the support plate is formed with a clamping hook and is connected with the lower edge of the reinforcing frame through the clamping hook.

7. The water blocking structure for an automobile air conditioner according to claim 1, wherein: The bottom of the drain groove is provided with a drain opening and a drain pipe interface is formed outside the heat exchange box, the bottom of the drain groove is upwardly protruded to form a plurality of reinforcing plates, the side wall of the drain groove near the air inlet is provided with an upward step surface, and the lower end of the heat exchange core body is in abutment with the step surface.

8. The water blocking structure for an automobile air conditioner according to claim 3, characterized by: The mesh size of the mesh plate section is 100-300 meshes.

9. The water blocking structure for an automobile air conditioner according to claim 3, wherein: The vertical height of the water baffle is H, and H is 10-30 mm, the distance between the upper edge of the water baffle and the heat exchange core body is L, and L is 6-10 mm, the vertical distance between the upper edge of the solid plate section and the lower end of the fin of the heat exchange core body is H1, and H1 is less than 10 mm, and the vertical distance between the upper edge of the solid plate section and the upper edge of the side wall of the drain groove near the air outlet is H2, and H2 is less than 8 mm.

10. The water deflector structure for an automotive air conditioner according to claim 1, wherein: The upper edge of the water baffle is inclined in the direction away from the heat exchange core body at an angle α, and α is less than 2°.

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