A system and vehicle for preventing thermal leakage from the front engine compartment

Abstract

The application provides a system for preventing hot air from entering a front engine compartment and a vehicle, to solve the problem that hot air, exhaust gas and dust in the front engine compartment enter the passenger compartment when the air conditioner is in external circulation, affecting the driving experience. The system for preventing hot air from entering the front engine compartment comprises a front cover decoration part and an air conditioner external air inlet duct, which are fixed on the vehicle body and arranged in the front engine compartment; a water collecting tank is arranged on the front cover decoration part and the air conditioner external air inlet duct; a one-way drainage device is connected to the outlet of each water collecting tank; water flows from the front windshield to the surface of the front cover decoration part and the air conditioner external air inlet duct, and then enters the water collecting tank; the one-way drainage device drains the water in the water collecting tank and prevents impurities in the front engine compartment from entering the interior of the front cover decoration part and the air conditioner external air inlet duct through the water collecting tank.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically providing a system and vehicle for preventing hot air leakage from the front engine compartment. Background Technology

[0002] In existing gasoline and hybrid vehicles, the engine is located in the engine compartment. When the engine is running, the engine compartment generates heat, exhaust fumes, and dust. Simultaneously, the front grille trim or the external air intake duct in the engine compartment needs to drain water from the windshield area. Traditionally, this involves a water collection tank or a direct opening in the external air intake duct to drain the water (e.g., a front grille trim structure and vehicle disclosed in CN115402225A). Because the vehicle's undercarriage is interconnected, the air conditioning system, even with external circulation, can draw in hot air, exhaust fumes, and dust from the engine compartment that enters through the drain holes, failing to effectively block the heat, exhaust fumes, and dust generated by the engine. When the external air circulation is on, the air vents blow exhaust fumes, hot air, and dust from the engine compartment into the passenger compartment, causing an unpleasant odor and blowing hot air, preventing passengers from feeling the coolness of the air conditioning and resulting in a very poor driving and riding experience. Summary of the Invention

[0003] This invention provides a system and vehicle for preventing hot air from entering the front engine compartment, thereby solving the problem in the prior art where hot air, exhaust gas, and dust from the front engine compartment enter the passenger compartment when the air conditioner is in external circulation mode, affecting the driving and riding experience.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] On the one hand, this application provides a system for preventing heat leakage from the front engine compartment, including: a front hood trim piece fixed to the vehicle body and installed in the front engine compartment and an external air intake duct for air conditioning;

[0006] The front cover trim and the air conditioner external air intake duct are both equipped with water collection tanks, and a one-way drainage device is connected to the outlet of each water collection tank.

[0007] Water flows from the windshield onto the surface of the front hood trim and the external air intake duct of the air conditioner, and then enters the water collection tank. The one-way drainage device drains the water that has entered the water collection tank and prevents impurities in the front engine compartment from entering the front hood trim and the external air intake duct of the air conditioner through the water collection tank.

[0008] Preferably, the one-way drainage device includes a one-way valve and / or a floor drain.

[0009] Preferably, a first drain hole is provided at the bottom of the water collection tank;

[0010] When the one-way drainage device includes a floor drain, the floor drain is fitted at the first drainage hole, and the floor drain is pressed and fixed by a bushing.

[0011] Preferably, the installation part of the floor drain extends into the interior of the water collection tank and fits around the periphery of the first drain hole;

[0012] The pressing part of the bushing presses against the mounting part of the floor drain, and the first mounting claw of the bushing engages with the first locking hole provided on the floor drain.

[0013] Preferably, a second drain hole is provided at the bottom of the water collection tank;

[0014] When the one-way drainage device includes a one-way valve, the one-way valve is fitted at the second drain hole.

[0015] Preferably, the one-way valve includes: a one-way valve body and a valve plate with deformability;

[0016] The second mounting claw of the one-way valve body engages with the second locking hole provided on the wall of the second drain hole;

[0017] A valve plate mounting component is provided in the hollow cavity of the one-way valve body. The valve plate mounting component and the inner wall of the one-way valve body are connected by a connecting rib, and a drainage channel is also formed between the valve plate mounting component and the inner wall of the one-way valve body.

[0018] The valve plate is connected to the valve plate mounting component;

[0019] When no water enters the water collection tank, the valve plate blocks the drainage channel;

[0020] When water enters the water collection tank, a first gap is formed between the valve plate, the one-way valve body, and the connecting rib to allow water to flow out of the drainage channel.

[0021] Preferably, the one-way valve further includes a sealing ring, which is fitted onto the one-way valve body and is in contact with the surface of the water collection tank.

[0022] Preferably, the one-way valve further includes: a plug, the plug being fixedly connected to the one-way valve body, a second gap being formed between the plug and the connecting rib, and the plug having a plug leakage hole communicating with the second gap.

[0023] Preferably, the plug is hooked into a groove provided on the one-way valve body by a barb.

[0024] On the other hand, this application also provides a vehicle including the aforementioned system for preventing heat leakage from the front engine compartment.

[0025] The beneficial effects of this application are as follows:

[0026] By installing a one-way drainage device, water that flows from the windshield onto the surface of the front hood trim and into the air conditioning intake duct before entering the water collection tank is discharged in a single direction. This effectively solves the problem of hot air, exhaust gas, and dust from the front engine compartment entering the air conditioning system through the water collection tank or the drain hole of the air conditioning intake duct. When the air conditioning is in external circulation mode, hot air and engine compartment exhaust gas are blown out of the air conditioning vents into the passenger compartment. This not only improves the performance of the air conditioning system but also meets the structural requirements for drainage in the front area. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the system for preventing heat leakage from the front engine compartment as described in this application embodiment, mounted on the vehicle body.

[0028] Figure 2 This is a partial enlarged view of the front grille trim and air conditioning external air intake mounted on the vehicle body 1 in the embodiments of this application;

[0029] Figure 3 This is a structural schematic diagram of the front cover trim component in an embodiment of this application;

[0030] Figure 4 This is a cross-sectional view of the floor drain installation in an embodiment of this application;

[0031] Figure 5 This is a structural diagram of the bushing in the embodiments of this application;

[0032] Figure 6 This is a structural diagram of the one-way valve in the embodiments of this application;

[0033] Figure 7 This is an exploded view of the check valve in the embodiments of this application;

[0034] Figure 8 This is a cross-sectional schematic diagram of the one-way valve in the closed state installed on the water collection tank in the embodiments of this application;

[0035] Figure 9 This is a cross-sectional schematic diagram of the one-way valve in the open state installed on the water collection tank in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Front grille trim, 2-Air conditioning external air intake duct, 3-One-way valve, 4-Vehicle body, 5-Windshield, 6-Water collection tank, 7-Floor drain, 8-Bushing;

[0038] 31-One-way valve body, 311-Second mounting claw, 312-Valve plate mounting piece, 313-Connecting rib, 314-Drainage channel, 315-Second gap, 32-Sealing ring, 33-Valve plate, 331-First gap; 34-Plug, 341-Leakage hole, 341-Barb;

[0039] 71-S-bend, 72-closed opening, 73-mounting part;

[0040] 81-First mounting claw, 82-Pressure fitting part. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings.

[0042] Reference Figure 1 This invention provides a system for preventing heat leakage from the front engine compartment, comprising: a vehicle body 4, a windshield 5, a front grille trim 1, and an external air intake duct 2 fixedly mounted on the vehicle body 4, wherein the front grille trim 1 and the external air intake duct 2 are both located within the front engine compartment. The method of fixing the windshield 5, the front grille trim 1, and the external air intake duct 2 to the vehicle body 4 is existing technology.

[0043] In the embodiments of this application, reference is made to Figure 2 Water collection tanks 6 are installed on the front hood trim piece 1 and the air conditioning external air intake duct 2. A one-way drainage device is connected to the outlet of each water collection tank 6. Water flows from the windshield 5 to the surface of the front hood trim piece 1 and the air conditioning external air intake duct 2, and then enters the water collection tank 6. The one-way drainage device drains the water that enters the water collection tank 6 and prevents impurities in the front engine compartment (such as engine compartment heat, exhaust gas and dust) from entering the front hood trim piece 1 and the air conditioning external air intake duct 2 through the water collection tank 6.

[0044] In this embodiment, the one-way drainage device includes a one-way valve 3 and a floor drain 7; of course, it is also possible to provide only one of the one-way drainage devices, the one-way valve 3 and the floor drain 7, as needed.

[0045] In this embodiment of the application, in order to drain all the water, the water collection tank 6 is arranged at the bottom of the front cover decoration 1, and the water collection tank 6 is fixed to the front cover decoration 1 by means of snap-fit, welding or screw connection.

[0046] Combination Figure 1 , Figure 2 , Figure 3 and Figure 5In this embodiment, the floor drain 7 is mounted at the first drain hole at the bottom of the water collection tank 6, and the floor drain 7 is pressed and fixed by the bushing 8. Specifically, the mounting part 73 of the floor drain 7 extends into the interior of the water collection tank 6 and fits around the first drain hole of the water collection tank 6; the pressing part 82 of the bushing 8 presses on the mounting part 73 of the floor drain 7, and the first mounting claw 81 of the bushing 8 engages in the first locking hole provided on the floor drain 7, thereby achieving the fastening and fixing of the floor drain 7 on the water collection tank 6.

[0047] Combination Figure 2 In this embodiment of the application, a water collection tank 6 and a floor drain 7 are also installed on the air conditioner external air intake duct 2. The installation principle of the water collection tank 6 and the floor drain 7 on the air conditioner external air intake duct 2 is the same as that on the front cover decorative part 1.

[0048] In this embodiment, the floor drain 7 is made of silicone or rubber that meets the requirements for heat protection in the engine room. (Refer to...) Figure 4 The bottom of the drain 7 includes an S-bend 71 and a closed opening 72. The S-bend 71 and the closed opening 72 are closed by the material itself and its shape. When water enters the water collection tank 6 through the front cover decoration 1 in the front blocking area, the water collection tank 6 is provided with a water guiding slope, which allows the water to quickly gather at the drain 7. After the water enters the water guiding section of the drain 7, the volume and gravity of the water open the S-bend 71 and the closed opening 72 of the drain 7, so that it flows out.

[0049] Reference Figure 4 Generally, the S-bend 71 and the closing opening 72 at the bottom of the drain 7 are in a closed state. When it rains or the car is washed, water enters the front hood trim 1 and the air conditioning external intake duct 2 from the windshield 5, and then flows along the water guide slope of the water collection groove 6 set at the bottom of the front hood trim 1 and the air conditioning external intake duct 2 to the drain 7 at its lowest position. After the water enters the drain 7, the S-bend 71 and the closing opening 72 of the drain 12 are opened by the weight and volume of the water; after the water is discharged, the closing opening 72 of the drain 7 closes again due to the material properties and shape, preventing hot air, exhaust gas and dust from the engine compartment from entering the front hood trim 1 and the air conditioning external intake duct 2 in reverse, and then entering the air conditioning system; thus, one-way discharge of water is achieved.

[0050] Reference Figures 6 to 9 The one-way valve 3 consists of a one-way valve body 31, a sealing ring 32, a deformable valve plate 33, and a plug 34. The one-way valve body 31 is provided with a second mounting claw 311, a valve plate mounting part 312, a connecting rib 313, and a drainage channel 314.

[0051] Reference Figure 7 and Figure 8The one-way valve body 31 is engaged in the second hole provided on the wall of the second drain hole of the water collection tank 6 by the second mounting claw 311. The valve plate mounting piece 312 is provided in the center of the central cavity of the one-way valve body 31. The valve plate mounting piece 312 is connected to the inner wall of the one-way valve body 31 by a plurality of connecting ribs 313 evenly distributed along its circumference, forming the aforementioned drain channel 314 between adjacent connecting ribs 314.

[0052] Reference Figure 8 and Figure 9 The sealing ring 32 is fitted on the side of the one-way valve body 31 facing the water collection tank 6, and the sealing ring 32 and the surface of the water collection tank 6 are tightly fitted to prevent water in the water collection tank 6 from leaking through the tiny gap between the wall of the second drain hole and the outer wall of the one-way valve body 31.

[0053] Reference Figures 7 to 9 The valve plate 33 is disc-shaped and has self-deformation capability (therefore, in this embodiment, the valve plate 33 is made of silicone or rubber that meets the requirements for heat hazard control in the engine room). The mounting portion of the valve plate 33 is inserted into and passes through the valve plate mounting hole of the valve plate mounting member 312. When no water enters the water collection tank 6, the disc-shaped edge of the valve plate 33 bends upward to form an interference seal with the inner wall of the one-way valve body 31, blocking the drainage channel 314. (Refer to...) Figure 9 When water enters the water collection tank 6, the valve plate 33 forms a first gap 331 between the one-way valve body 31 and the connecting rib 313, through which water flows out of the water supply and drainage channel 314.

[0054] Reference Figure 8 and Figure 9 A second gap 315 exists between the plug 34 and the connecting rib 313. A plug leakage hole 341 communicating with this second gap 315 is provided at the center of the plug 34. The edge of the plug 34 has barbs 342, which hook into a groove on the one-way valve body 31, thereby fixing the plug 34. The gap 315 between the plug 34 and the connecting rib 313 constitutes the edge deformation range of the valve plate 33, meaning the plug 34 restricts the range of motion of the valve plate 33.

[0055] The drain hole 341 of the plug 34 and the opening position of the valve plate 33 are staggered, which can help control the direction of water and limit the valve plate 33 to prevent excessive deformation of the valve plate 33 from causing failure of sealing and drainage functions.

[0056] Reference Figure 9 When water enters the one-way valve 3, it is forced open by the gravity of the water, and enters the second gap 315 through the drainage channel 314 and the first gap 331, and then is discharged from the plug leakage hole 341. After the water is discharged, the valve plate 33 is sealed with the one-way valve body 31 again by relying on the material properties and shape.

[0057] This one-way valve 3 prevents hot air, exhaust gas, and dust from entering the front hood trim 1 and the air conditioning external intake duct 2, and subsequently into the passenger compartment; it also controls the direction of water inflow to achieve waterproofing. The one-way valve 3 can be used alone on sheet metal and plastic surfaces, or it can be integrated into a system.

[0058] On the other hand, this application also provides a vehicle including the aforementioned system for preventing heat leakage from the front engine compartment.

[0059] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0061] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used for the convenience of describing the invention and for 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, and therefore should not be construed as a limitation of the invention. Furthermore, relational terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements does not include those elements, but also includes other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0062] The technical solution provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand this invention, and the content of this specification should not be construed as a limitation of this invention. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this invention. It is neither necessary nor possible to exhaustively list all implementation methods here, but obvious changes or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A system for preventing hot streaking of a front cowling, the system comprising: The utility model relates to a front cover decoration (1) and air conditioner outer air inlet duct (2) are arranged in the front cabin of the vehicle body (4) and are fixed on the vehicle body (4), and the front cover decoration (1) and the air conditioner outer air inlet duct (2) are provided with water collecting tank (6) on it, and the outlet of water collecting tank (6) is connected with one-way drainage device. Water flows from the front windshield (5) to the surface of the front cover decoration (1) and the air conditioner outer air inlet duct (2), and then enters the water collecting tank (6); the one-way drainage device drains the water in the water collecting tank (6) and prevents impurities in the front cabin from entering the inside of the front cover decoration (1) and the air conditioner outer air inlet duct (2) through the water collecting tank (6); the one-way drainage device includes a one-way valve (3) and / or a floor drain (7); the bottom of the water collecting tank (6) is provided with a first drainage hole; When the one-way drainage device includes a floor drain (7), the floor drain (7) is fitted at the first drainage hole, and the floor drain (7) is tightly fixed by a bushing (8); the mounting part (73) of the floor drain (7) extends into the inside of the water collecting tank (6) and is attached to the circumference of the first drainage hole; The pressing part (82) of the bushing (8) presses on the mounting part (73) of the floor drain (7), and the first mounting claw (81) of the bushing (8) is clamped into the first clamping hole provided on the floor drain (7). The bottom of the water collecting tank (6) is provided with a second drainage hole; When the one-way drainage device includes a one-way valve (3), the one-way valve (3) is fitted at the second drainage hole.

2. The system to prevent hot streaking of a front cowling of Claim 1, wherein, The one-way valve (3) includes a one-way valve body (31) and a valve plate (33) with deformation ability; The second mounting claw (311) of the one-way valve body (31) is clamped into the second clamping hole provided on the hole wall of the second drainage hole; 3. The system of claim 2, wherein, A valve plate mounting part (312) is arranged in the hollow cavity of the one-way valve body (31), the valve plate mounting part (312) and the inner wall of the one-way valve body (31) are connected by a connecting rib (313), and a drainage channel (314) is further formed between the valve plate mounting part (312) and the inner wall of the one-way valve body (31); The valve plate (33) is connected with the valve plate mounting part (312); When there is no water in the water collecting tank (6), the valve plate (33) blocks the drainage channel (314); When there is water in the water collecting tank (6), the valve plate (33) forms a first gap (331) with the one-way valve body (31) and the connecting rib (313) for the water flow in the drainage channel (314). The one-way valve (3) further includes a sealing ring (32) sleeved on the one-way valve body (31), and the sealing ring (32) is attached to the surface of the water collecting tank (6). ​ 4. The system for preventing hot streaking of a forward cowling of Claim 3, wherein, ​ 5. The system of claim 3, wherein, The one-way valve (3) further comprises a plug cover (34) fixedly connected with the one-way valve body (31), a second gap (315) is formed between the plug cover (34) and the connecting rib (313), and a plug cover water leakage hole (341) in communication with the second gap (315) is arranged on the plug cover (34).

6. The system for preventing hot streaking of a forward cowling of Claim 5, wherein, The plug cover (34) is hooked in a hook groove arranged on the one-way valve body (31) through an inverted hook (342).

7. A vehicle characterized by comprising: A system for preventing thermal gas stringing in a front cabin, comprising the system of any one of claims 1 to 6.

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