System for preventing heat blow-by of front cabin and vehicle

Abstract

The invention provides a system for preventing thermal blow-by of a front cabin and a vehicle, and aims to solve the problem that in the prior art, when an air conditioner starts external circulation, hot air, waste gas and dust in the front cabin can enter a passenger compartment, and the driving experience is affected. The system for preventing heat blow-by of the front cabin comprises a front cover decorating part and an air conditioner outer air inlet pipe which are fixed to a vehicle body and arranged in the front cabin. The front cover decorating part and the air conditioner outer air inlet pipe are each provided with a water collecting groove, and a one-way drainage device is connected to an outlet of each water collecting groove. Water flows from the front windshield to the surface of the front cover decorating part and the air conditioner outer air inlet pipe and then enters the water collecting tank, and the one-way drainage device drains the water entering the water collecting tank and prevents impurities in a front cabin from entering the front cover decorating part and the air conditioner outer air inlet pipe through the water collecting tank.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and specifically provides a system and a vehicle for preventing heat leakage from a front engine compartment. Background Art

[0002] In existing vehicles, fuel and hybrid models have engines arranged in the cabin, which will generate heat, waste and dust when the engine is working. At the same time, the front hood decoration or air conditioning external air intake duct in the cabin needs to bear the drainage function of the front windshield area. The traditional structure is a water collection tank or air conditioning external air intake duct directly opening a hole to discharge water (such as a car front hood decoration structure and vehicle disclosed in CN115402225A). Since the bottom of the vehicle is connected inside and outside, the air conditioning can inhale the cabin heat, waste gas and dust that enter through the drainage hole when the air conditioning is turned on, and cannot effectively block the heat, waste gas and dust generated by the engine. When the air conditioning external circulation is turned on, the air outlet of the air conditioning will blow out the exhaust gas, heat and dust in the cabin into the passenger compartment, causing the cabin to have a strange smell in the passenger compartment, and blowing out hot air, so that the driver and passengers cannot feel the coolness of the air conditioning, resulting in the adverse consequence of extremely poor driving experience. Summary of the invention

[0003] The present invention provides a system and a vehicle for preventing heat from entering the front cabin, so as to solve the problem in the prior art that when the air conditioner is turned on for external circulation, the hot air, exhaust gas and dust from the front cabin will enter the passenger cabin, affecting the driving experience.

[0004] To achieve the above object, the technical solution of the present invention is: In one aspect, the present application provides a system for preventing heat cross-flow from the front cabin, comprising: a front hood decoration fixed to a vehicle body and arranged in the front cabin and an air conditioning external air intake duct; Wherein, a water collecting tank is installed on the front cover decoration and the air-conditioning external air intake duct, and a one-way drainage device is connected to the outlet of each water collecting tank; After water flows from the front windshield to the surface of the front cover decorative part and the air-conditioning outer air intake duct, it enters the water collection tank; the one-way drainage device discharges the water entering the water collection tank and prevents impurities in the front engine compartment from entering the front cover decorative part and the air-conditioning outer air intake duct through the water collection tank.

[0005] Preferably, the one-way drainage device includes a one-way valve and / or a floor drain.

[0006] Preferably, a first drainage hole is provided at the bottom of the water collection tank; When the one-way drainage device includes a floor drain, the floor drain is assembled at the first drainage hole, and the floor drain is compressed and fixed by a bushing.

[0007] Preferably, the installation portion of the floor drain extends into the interior of the water collection tank and fits the circumference of the first drainage hole; The pressing portion of the bushing is pressed onto the mounting portion of the floor drain, and the first mounting claw of the bushing is clamped into a first clamping hole provided on the floor drain.

[0008] Preferably, a second drainage hole is provided at the bottom of the water collection tank; When the one-way drainage device includes a one-way valve, the one-way valve is assembled at the second drainage hole.

[0009] Preferably, the one-way valve comprises: a one-way valve body and a valve sheet with deformation capability; The second mounting claw of the one-way valve body is clamped into a second clamping hole provided on the hole wall of the second drain hole; A valve plate mounting member is arranged in the hollow cavity of the one-way valve body, the valve plate mounting member 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 member and the inner wall of the one-way valve body; The valve plate is connected to the valve plate mounting member; When there is no water in the water collecting tank, the valve plate blocks the drainage channel; When water enters the water collecting tank, a first gap is formed between the valve plate, the one-way valve body and the connecting rib for water in the drainage channel to flow out.

[0010] Preferably, the one-way valve further comprises: a sealing ring, which is sleeved on the one-way valve body and fits the surface of the water collecting tank.

[0011] Preferably, the one-way valve further comprises: a plugging cover, the plugging cover is fixedly connected to the one-way valve body, a second gap is formed between the plugging cover and the connecting rib, and a plugging cover leakage hole communicating with the second gap is provided on the plugging cover.

[0012] Preferably, the blocking cover is hooked in a hook groove provided on the one-way valve body through a barb.

[0013] On the other hand, the present application also provides a vehicle, comprising the above-mentioned system for preventing heat cross-talk between the front engine compartment and the front engine compartment.

[0014] The beneficial effects of this application are: By setting up a one-way drainage device, the water that flows from the front windshield to the surface of the front cover decorative part and the air-conditioning outer air intake duct and then enters the sump is discharged in a one-way manner, which effectively prevents the hot air, exhaust gas and dust in the front cabin from entering the air-conditioning through the sump or the drainage hole of the air-conditioning outer air intake duct; when the air-conditioning is turned on for external circulation, the air-conditioning outlet blows hot air and cabin exhaust gas into the passenger compartment, which can not only improve the performance of the air-conditioning, but also meet the drainage structure of the front area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of assembling a system for preventing heat leakage from the front engine compartment on a vehicle body in an embodiment of the present application; Figure 2 It is a partial enlarged view of the front cover decoration and the air-conditioning outer air inlet assembled on the vehicle body 1 in the embodiment of the present application; Figure 3 It is a schematic structural diagram of the front cover decoration in the embodiment of the present application; Figure 4 This is a cross-sectional view of the floor drain installation in the embodiment of the present application; Figure 5 is a structural diagram of a bushing in an embodiment of the present application; Figure 6 It is a structural diagram of a one-way valve in an embodiment of the present application; Figure 7 An exploded view of a one-way valve in an embodiment of the present application; Figure 8 It is a cross-sectional schematic diagram of a one-way valve in a closed state when installed on a water collecting tank in an embodiment of the present application; Fig. 9 It is a cross-sectional schematic diagram of a one-way valve in an open state when installed on a water collecting tank in an embodiment of the present application; Description of reference numerals: 1-front hood decoration, 2-air conditioning external air intake duct, 3-check valve, 4-car body, 5-front windshield, 6-water collection tank, 7-floor drain, 8-bushing; 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- plugging cover, 341- water leakage hole, 341- barb; 71-S-bend, 72-closed opening, 73-installation portion; 81 - first mounting claw, 82 - pressing portion. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] Reference Figure 1 The embodiment of the present invention provides a system for preventing heat cross-flow from the front cabin, comprising: a vehicle body 4, a front windshield 5, a front cover decoration 1 and an air-conditioning external air intake duct 2 fixedly mounted on the vehicle body 4, and the front cover decoration 1 and the air-conditioning external air intake duct 2 are both located in the front cabin. The fixing method of the front windshield 5, the front cover decoration 1 and the air-conditioning external air intake duct 2 on the vehicle body 4 is the prior art.

[0018] Among them, in the embodiments of the present application, refer to Figure 2 A water collecting tank 6 is installed on the front cover decoration 1 and the air-conditioning outer air intake duct 2, and a one-way drainage device is connected to the outlet of each water collecting tank 6; after the water flows from the front windshield 5 to the surface of the front cover decoration 1 and the air-conditioning outer air intake duct 2, it enters the water collecting tank 6; the one-way drainage device discharges the water entering the water collecting tank 6 and prevents impurities (such as cabin heat, exhaust gas and dust) in the front cabin from entering the front cover decoration 1 and the air-conditioning outer air intake duct 2 through the water collecting tank 6.

[0019] In the embodiment of the present application, the one-way drainage device includes a one-way valve 3 and a floor drain 7; of course, only one of the one-way drainage devices, the one-way valve 3 and the floor drain 7, may be provided as required.

[0020] In the embodiment of the present application, in order to drain all the water, the water collecting tank 6 is arranged at the bottom of the front cover decoration 1, and the water collecting tank 6 and the front cover decoration 1 are fixed by means of snap connection, welding or screw connection.

[0021] Combination Figure 1 , Figure 2 , Figure 3 and Figure 5 In the embodiment of the present application, the floor drain 7 is assembled at the first drainage hole provided at the bottom of the water collecting tank 6, and the floor drain 7 is pressed and fixed by the bushing 8. Specifically, the mounting portion 73 of the floor drain 7 extends into the interior of the water collecting tank 6 and fits around the first drainage hole of the water collecting tank 6; the pressing portion 82 of the bushing 8 is pressed on the mounting portion 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, thereby realizing the fastening and fixing of the floor drain 7 on the water collecting tank 6.

[0022] Combination Figure 2 In the embodiment of the present application, a water collecting tank 6 and a floor drain 7 are also installed on the air-conditioning external air intake duct 2. The installation principle of the water collecting tank 6 and the floor drain 7 on the air-conditioning external air intake duct 2 refers to the installation on the front cover decorative part 1.

[0023] In the embodiment of the present application, the floor drain 7 is made of silicone or rubber that meets the requirements of cabin heat damage. Figure 4The bottom of the floor 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's own performance and shape. When water passes through the front cover decorative member 1 in the front baffle area and enters the water collecting tank 6, the water can quickly gather at the floor drain 7 because a water guiding slope is provided in the water collecting tank 6. After the water enters the water guiding section of the floor drain 7, the S-bend 71 and the closed opening 72 of the floor drain 7 are opened by the volume of the water and gravity, thereby flowing out.

[0024] Reference Figure 4 Generally speaking, the S-bend 71 and the closed opening 72 at the bottom of the floor drain 7 are in a closed state. When it rains or when washing the car, water will enter the front cover decoration 1 and the air-conditioning external air intake duct 2 from the front windshield 5, and then flow along the water guide slope of the water collecting tank 6 set at the bottom of the front cover decoration 1 and the bottom of the air-conditioning external air intake duct 2 to the floor drain 7 at its lowest position. After the water enters the floor drain 7, the S-bend 71 and the closed opening 72 of the floor drain 12 are propped open by the gravity and volume of the water; after the water is discharged, the closed opening 72 of the floor drain 7 is closed again by the material's own performance and shape, preventing the cabin heat, exhaust gas and dust from entering the front cover decoration 1 and the air-conditioning external air intake duct 2 in the reverse direction, and then entering the air conditioner; thereby, the one-way discharge of water is achieved.

[0025] Reference Figures 6 to 9 The one-way valve 3 is composed of a one-way valve body 31, a sealing ring 32, a valve plate 33 with deformation ability, and a plug cover 34. The one-way valve body 31 is provided with a second mounting claw 311, a valve plate mounting piece 312, a connecting rib 313 and a drainage channel 314.

[0026] Reference Figure 7 and Figure 8 The one-way valve body 31 is clamped into the second clamping hole set on the hole wall of the second drainage hole of the sump 6 through the second mounting claw 311, and the valve plate mounting member 312 is set in the middle of the central hole cavity of the one-way valve body 31. The valve plate mounting member 312 is connected to the inner wall of the one-way valve body 31 through a plurality of connecting ribs 313 evenly distributed along its circumferential direction, and the aforementioned drainage channel 314 is formed between adjacent connecting ribs 314.

[0027] Reference Figure 8 and Fig. 9 The sealing ring 32 is sleeved on the side of the one-way valve body 31 facing the water collecting tank 6, and the sealing ring 32 and the surface of the water collecting tank 6 are tightly fitted to prevent the water in the water collecting tank 6 from leaking through the small gap between the wall of the second drain hole and the outer wall of the one-way valve body 31.

[0028] Reference Figures 7 to 9The valve plate 33 is disc-shaped and has self-deformation capability (therefore, in the embodiment of the present application, the valve plate 33 is made of silicone or rubber that meets the requirements of cabin heat damage). The mounting portion of the valve plate 33 is squeezed into and passes through the valve plate mounting hole of the valve plate mounting member 312. When there is no water in 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, thereby blocking the drainage channel 314. Fig. 9 When water enters the water collecting tank 6, a first gap 331 is formed between the valve plate 33, the one-way valve body 31 and the connecting rib 313 for water in the water supply and drainage channel 314 to flow out.

[0029] Reference Figure 8 and Fig. 9 , a second gap 315 is formed between the plugging cover 34 and the connecting rib 313, a plugging cover water leakage hole 341 communicating with the second gap 315 is provided at the center of the plugging cover 34, and a barb 342 is provided at the edge of the plugging cover 34, and the barb 342 is hooked in a hook groove provided on the one-way valve body 31, thereby fixing the plugging cover 34. The gap 315 between the plugging cover 34 and the connecting rib 313 constitutes the edge deformation range of the valve plate 33, that is, the plugging cover 34 plays a role in limiting the range of motion of the valve plate 33.

[0030] The leakage hole 341 of the plugging cover 34 and the opening position of the valve plate 33 are staggered, which can assist in controlling the direction of water and limit the valve plate 33 to prevent the valve plate 33 from excessively deforming and causing failure of the sealing and drainage functions.

[0031] Reference Fig. 9 When water enters the one-way valve 3, the water's gravity pushes open the edge of the valve plate 33, passes through the drainage channel 314 and the first gap 331, and enters the second gap 315, and then is discharged from the plugging cover leakage hole 341. After the water is discharged, the valve plate 33 is sealed again with the one-way valve body 31 by relying on the material's own properties and shape.

[0032] The one-way valve 3 can prevent cabin heat, exhaust gas and dust from entering the front cover decoration 1 and the air conditioning external air intake duct 2, and then entering the passenger compartment; at the same time, it can also control the direction of water inflow to achieve waterproofing. The one-way valve 3 can be installed on sheet metal and plastic for single use or integrated use.

[0033] On the other hand, the present application also provides a vehicle, comprising the above-mentioned system for preventing heat cross-talk between the front engine compartment and the front engine compartment.

[0034] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0035] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0036] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, relational terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements does not include those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0037] The technical solution provided by the present invention is described in detail above. The principle and implementation mode of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the present invention, and the content of this specification should not be understood as limiting the present invention. At the same time, for those skilled in the art, according to the present invention, there will be different forms of changes in the specific implementation mode and application scope. It is not necessary and impossible to list all the implementation modes here, and the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A system for preventing heat leakage from the front cabin, characterized in that: include: A front cover decoration (1) and an air conditioning external air intake duct (2) fixed to the vehicle body (4) and arranged in the front cabin; Wherein, a water collecting tank (6) is installed on the front cover decorative part (1) and the air conditioner external air intake duct (2), and a one-way drainage device is connected to the outlet of each water collecting tank (6); After water flows from the front windshield (5) to the surface of the front cover decorative component (1) and the air conditioner external air intake duct (2), it enters the water collecting tank (6); the one-way drainage device discharges the water entering the water collecting tank (6) and prevents impurities in the front engine compartment from entering the front cover decorative component (1) and the air conditioner external air intake duct (2) through the water collecting tank (6).

2. The system for preventing heat leakage from the front cabin according to claim 1, characterized in that: The one-way drainage device comprises a one-way valve (3) and / or a floor drain (7).

3. The system for preventing heat leakage from the front cabin according to claim 2, characterized in that: The bottom of the water collecting tank (6) is provided with a first drainage hole; When the one-way drainage device comprises a floor drain (7), the floor drain (7) is assembled at the first drainage hole, and the floor drain (7) is compressed and fixed by a bushing (8).

4. The system for preventing heat leakage from the front cabin according to claim 3, characterized in that: The mounting portion (73) of the floor drain (7) extends into the interior of the water collecting tank (6) and fits closely to the circumference of the first drainage hole; The pressing portion (82) of the bushing (8) is pressed onto the mounting portion (73) of the floor drain (7), and the first mounting claw (81) of the bushing (8) is clamped into a first clamping hole provided on the floor drain (7).

5. The system for preventing heat leakage from the front cabin according to claim 2, characterized in that: A second drainage hole is provided at the bottom of the water collecting tank (6); When the one-way drainage device comprises a one-way valve (3), the one-way valve (3) is mounted at the second drainage hole.

6. The system for preventing heat leakage from the front cabin according to claim 5, characterized in that: The one-way valve (3) comprises: a one-way valve body (31) and a valve plate (33) having the ability to deform; The second mounting claw (311) of the one-way valve body (31) is clamped into a second clamping hole provided on the hole wall of the second drainage hole; A valve plate mounting member (312) is disposed in the hollow cavity of the one-way valve body (31), the valve plate mounting member (312) and the inner wall of the one-way valve body (31) are connected via a connecting rib (313), and a drainage channel (314) is also formed between the valve plate mounting member (312) and the inner wall of the one-way valve body (31); The valve plate (33) is connected to the valve plate mounting member (312); When no water enters the water collecting tank (6), the valve plate (33) blocks the drainage channel (314); When water enters the water collecting tank (6), a first gap (331) is formed between the valve plate (33), the one-way valve body (31) and the connecting rib (313) for water in the drainage channel (314) to flow out.

7. The system for preventing heat leakage from the front cabin according to claim 6, characterized in that: The one-way valve (3) further comprises: a sealing ring (32), wherein the sealing ring (32) is sleeved on the one-way valve body (31), and the sealing ring (32) is in contact with the surface of the water collecting tank (6).

8. The system for preventing heat leakage from the front cabin according to claim 6, characterized in that: The one-way valve (3) further comprises: a plugging cover (34), the plugging cover (34) being fixedly connected to the one-way valve body (31), a second gap (315) being formed between the plugging cover (34) and the connecting rib (313), and a plugging cover water leakage hole (341) being provided on the plugging cover (34) and communicating with the second gap (315).

9. The system for preventing heat leakage from the front cabin according to claim 8, characterized in that: The blocking cover (34) is hooked into a hook groove provided on the one-way valve body (31) via a barb (342).

10. A vehicle, characterized in that: A system for preventing heat leakage from the front cabin comprising the system described in any one of claims 1 to 9.

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