Exhaust module for cabin fresh air system and vehicle fresh air exchange system

Abstract

The utility model provides an exhaust module for a cabin fresh air system and a vehicle fresh air exchange system, which are mounted on the side part of a vehicle rear box, electrically connected with a vehicle ECU module and used for being matched with an air inlet in the front of a vehicle under the control of the ECU module, so that air flows from front to back in a vehicle cabin and is exchanged with external air. The air exhaust module comprises a fan body, a filtering device is arranged on the fan body, an air door assembly is arranged at an air outlet, and the air door assembly comprises one or more air blocking pieces and can seal the air outlet; in the first state, the air blocking piece seals the air outlet; in the second state, the air outlet is opened; the air door assembly with the air blocking piece is arranged on the fan body, when the fan body works, the air blocking piece can turn over relative to the fan body to open the air outlet, and when the fan body stops, the air blocking piece closes the air outlet, so that reverse airflow is prevented from flowing backwards, and external impurities, dirt or peculiar smell are prevented from entering a vehicle cabin and polluting the cabin environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle air purification technology, in particular to an exhaust module for a cabin fresh air system and a vehicle fresh air exchange system. BACKGROUND

[0002] Due to the relatively closed environment in the vehicle, the air quality and temperature in the vehicle directly affect the health and comfort of the occupants. The air quality in the vehicle is usually polluted by the environment outside the vehicle and also by the automotive interior, such as after the vehicle is exposed to the sun on a hot summer day, not only is the interior prone to releasing toxic gases, but the temperature in the vehicle can reach 65°C-80°C. At this time, the cooling and ventilation efficiency simply relies on the automotive air conditioning system, therefore a vehicle fresh air system is in urgent need. However, the exhaust module of the existing vehicle fresh air system lacks a structure to prevent airflow from reversing and backflowing, which causes dust and other pollutants from the outside of the vehicle to enter the vehicle and pollute the environment inside the vehicle. SUMMARY

[0003] The purpose of the present application is to solve the above problems, and provide an exhaust module for a cabin fresh air system and a vehicle fresh air exchange system.

[0004] In a first aspect, the present application provides an exhaust module for a cabin fresh air system, which is installed on the side of the rear trunk of a vehicle and electrically connected with an ECU module of the vehicle, and is used to cooperate with an air inlet at the front of the vehicle under the control of the ECU module to realize the flow of gas from front to back inside the vehicle and exchange with external gas. The exhaust module comprises:

[0005] a fan body;

[0006] a filtering device provided on the fan body, used to filter dust and harmful substances and prevent foreign matter inside the vehicle from entering the fan body;

[0007] a damper assembly provided at an air outlet of the fan body, the damper assembly comprising one or more wind-blocking pieces, the wind-blocking pieces being used to close the air outlet; the damper assembly having a first state and a second state, when in the first state, the wind-blocking pieces close the air outlet; when in the second state, the air outlet is open.

[0008] According to the technical scheme provided by some embodiments of the present application, the damper assembly further comprises a driving member, the driving member being in transmission connection with all the wind-blocking pieces, the driving member being used to synchronously drive all the wind-blocking pieces to rotate relative to the fan body, so as to switch the damper assembly between the first state and the second state, thereby controlling the opening and closing of the air outlet.

[0009] According to the technical scheme provided in some embodiments of the present application, the air door assembly further comprises a ventilation support arranged at the air outlet of the fan body, and one or more first flow-through openings are arranged on the ventilation support in the first direction and communicate with the air outlet; the air resistance pieces are rotationally connected to the ventilation support, and each air resistance piece is arranged corresponding to at least one first flow-through opening; when in the first state, the air resistance pieces close all the first flow-through openings, and all the first flow-through openings are closed; when in the second state, all the first flow-through openings are opened.

[0010] According to the technical scheme provided in some embodiments of the present application, a sliding groove extending in the first direction is arranged on the ventilation support, and the air door assembly further comprises a gear rack, the gear rack is slidingly arranged in the sliding groove, and a plurality of gears are fixedly connected to one side of the sliding groove close to the air resistance pieces, and the plurality of gears are intermeshed with the gear rack.

[0011] According to the technical scheme provided in some embodiments of the present application, two limit blocks are arranged at two ends of the sliding groove respectively, and the two limit blocks limit the gear rack from two sides in the first direction respectively.

[0012] According to the technical scheme provided in some embodiments of the present application, the notch of the sliding groove is closed by a first dustproof cover and a second dustproof cover.

[0013] According to the technical scheme provided in some embodiments of the present application, the filtering device comprises an inner filter screen, the inner filter screen covers the air inlet of the fan body, and a plurality of second flow-through openings are arranged on the inner filter screen corresponding to the position of the air inlet.

[0014] According to the technical scheme provided in some embodiments of the present application, the filtering device further comprises a filter, and the filter is arranged between the fan body and the ventilation support.

[0015] According to the technical scheme provided in some embodiments of the present application, the side of the air resistance piece close to the ventilation support is provided with a sound attenuation structure.

[0016] In a second aspect, the present application provides a vehicle fresh air exchange system, comprising an ECU module and an air inlet module, and further comprising a ventilation module for a cabin fresh air system as described above, and the ECU module is electrically connected with the air inlet module and the ventilation module through a vehicle bus respectively.

[0017] Compared with the prior art, the application provides a ventilation module for a cabin fresh air system and a vehicle fresh air exchange system, which is installed on the side of a rear trunk of a vehicle, electrically connected with an ECU module of the vehicle, and used for cooperating with an air inlet at the front of the vehicle under the control of the ECU module to realize the flow of gas from front to back in the cabin of the vehicle and the exchange with external gas. The ventilation module comprises a fan body, and a filtering device is arranged on the fan body. The filtering device is used for filtering dust and harmful substances and preventing sundries in the vehicle from entering the fan body. A damper assembly is arranged at an air outlet of the fan body. The damper assembly comprises one or more wind blocking pieces, and the wind blocking pieces are used for closing the air outlet. The damper assembly has a first state and a second state. When the damper assembly is in the first state, the wind blocking pieces close the air outlet. When the damper assembly is in the second state, the air outlet is opened. When the fan body works, the wind blocking pieces can be flipped relative to the fan body to open the air outlet. When the fan body stops, the wind blocking pieces close the air outlet, thereby preventing the backflow of reverse air flow, avoiding the entry of sundries, dirt or odors in the external environment into the cabin of the vehicle, and polluting the cabin environment.

[0018] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in the present application does not imply that all features and advantages can be achieved in any single embodiment. On the contrary, it can be understood that the description of a feature or a beneficial effect means that the specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in the specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the embodiments can be combined in any appropriate manner. Those skilled in the art will understand that the embodiments can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings from these drawings without creating any creative labor.

[0020] Figure 1 A split structure schematic diagram of a ventilation module for a cabin fresh air system provided in Embodiment 1 of the present application;

[0021] Figure 2 A structure schematic diagram of an air outlet of a ventilation module for a cabin fresh air system provided in Embodiment 1 of the present application when the air outlet is closed;

[0022] Figure 3 A schematic diagram of the structure of an exhaust module for a cabin fresh air system when the air outlet is open, as provided in Embodiment 1 of this application;

[0023] Figure 4 and Figure 5 This is a schematic diagram of the structure of a fresh air exchange system exhaust module installed on a vehicle, as provided in Embodiment 2 of this application.

[0024] The text labels in the image represent:

[0025] 1. Fan body; 2. Ventilation bracket; 3. Wind baffle; 4. Drive component; 5. Rack; 6. Gear; 7. Limit block; 8. First dust cover; 9. Second dust cover; 10. Inner filter; 11. Filter; 12. First flow port; 13. Second flow port; 14. Mounting port; 100. Exhaust module. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0027] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0028] Example 1

[0029] As mentioned in the background section, to address the problems in the prior art, this embodiment provides an exhaust module for a cabin fresh air system, installed on the side of the vehicle's rear trunk and electrically connected to the vehicle's ECU module. Under the control of the ECU module, it works in conjunction with the vehicle's front air intake to allow air to flow from front to back within the vehicle cabin and exchange with external air. The exhaust module 100 includes:

[0030] Fan body 1;

[0031] Filtering device, filtering device is arranged on fan body 1, for filtering dust and harmful substances and preventing sundries in vehicle from entering fan body 1;

[0032] Damper assembly, damper assembly is arranged at air outlet of fan body 1, damper assembly includes one or more wind blocking pieces 3, wind blocking piece 3 is used for closing air outlet; Damper assembly has first state and second state, when being in first state, wind blocking piece 3 closes air outlet; When being in second state, air outlet is opened.

[0033] As shown in Figures 1-3 First direction is vertical direction in Figure 1 Fan body 1 adopts axial flow type exhaust fan in prior art, filtering device is used for adsorbing dust and impurities passing through fan body 1, wind blocking piece 3 is approximately rectangular plane structure, is arranged at one side of air outlet of fan body 1, can rotate relative to fan body 1, and then controls opening and closing of air outlet, exhaust module 100 is arranged at rear trunk side tail of vehicle, can cooperate with air conditioning air inlet module of front part of vehicle, and is electrically connected with ECU module through lin-bus or can-bus and the like, controls air conditioning air inlet module and exhaust module 100 through ECU module, so that gas in external environment enters vehicle interior from air conditioning air inlet module, and the gas in vehicle cabin is exhausted by exhaust module 100, and the gas can flow through the entire automobile cabin from front to back, and the gas exchange between the cabin interior and the external environment is realized; Initially, one or more wind blocking pieces 3 close air outlet, when fan body 1 is started, one or more wind blocking pieces 3 are overturned relative to fan body 1, so that air outlet is opened, and the gas in vehicle cabin is exhausted to the external environment under the driving of fan body 1, that is, the above-mentioned second state; When fan body 1 is closed, one or more wind blocking pieces 3 are overturned to close air outlet, that is, the above-mentioned first state; The number of wind blocking pieces 3 can be adjusted according to actual requirements, which can be a single wind blocking piece 3 corresponding to the air outlet, or multiple wind blocking pieces 3 cooperating to close the air outlet, which is not specially limited here.

[0034] By arranging damper assembly with wind blocking piece 3 on fan body 1, when fan body 1 works, wind blocking piece 3 can be overturned relative to fan body 1 to open air outlet, when fan body 1 stops, wind blocking piece 3 closes air outlet, and then the reverse airflow backflow can be prevented, and the impurities, dirt or odor in the external environment can be prevented from entering the vehicle cabin to pollute the cabin environment.

[0035] In a preferred embodiment, the damper assembly further comprises a driving member 4, the driving member 4 is in transmission connection with all wind blocking pieces 3, the driving member 4 is used for synchronously driving all wind blocking pieces 3 to rotate relative to the fan body 1, so that the damper assembly is switched between the first state and the second state, and then the opening and closing of the air outlet are controlled.

[0036] In a preferred embodiment, the air damper assembly further includes a ventilation bracket 2, which is arranged at the air outlet of the fan body 1, and one or more first flow ports 12 communicating with the air outlet are formed in the ventilation bracket 2 along a first direction; the air blocking member 3 is rotatably connected to the ventilation bracket 2, and each air blocking member 3 is correspondingly arranged for at least one first flow port 12; when in the first state, the air blocking member 3 closes all the first flow ports 12, and all the first flow ports 12 are closed; when in the second state, all the first flow ports 12 are opened.

[0037] As Figures 1-3 As shown, the ventilation bracket 2 is approximately a rectangular frame structure, which is arranged on one side of the air outlet of the fan body 1. One or more first flow ports 12 communicating with the air outlet are formed in the ventilation bracket 2, and the circumferential edge thereof has a protrusion extending away from the fan body 1. A rotation groove is formed in the protrusion for installing the air blocking member 3; the air blocking member 3 includes a rotating shaft and a baffle. The baffle is fixed on one side of the rotating shaft, and both ends of the rotating shaft are arranged in the rotation groove and can rotate in the rotation groove to drive the baffle to flip, thereby controlling the opening and closing of the first flow port 12. The number of the first flow ports 12 can also be adjusted according to actual needs, as long as all the first flow ports 12 are correspondingly communicated with the air outlet. Each air blocking member 3 is correspondingly arranged for at least one first flow port 12; the driving member 4 can adopt a motor in the prior art, which is arranged on one side of the ventilation bracket 2. The driving shaft of the motor is fixedly connected to the rotating shaft of the air blocking member 3 and can drive the air blocking member 3 to rotate, thereby opening or closing the first flow port 12; when there are multiple air blocking members 3, the driving shaft of the motor is fixedly connected to one of the air blocking members 3, and the multiple air blocking members 3 are in transmission connection, and the motor can drive the multiple air blocking members 3 to rotate simultaneously.

[0038] In other embodiments of the present application, the air damper assembly can also adopt a self-hanging louver structure. When the fan body 1 is working, the gas discharged from the air outlet blows the air blocking member 3 to flip relative to the fan body 1, thereby opening the first flow port 12. When the fan body 1 stops working, the air blocking member 3 flips by its own gravity to close the first flow port 12.

[0039] In a preferred embodiment, a chute extending along the first direction is formed in the ventilation bracket 2. The air damper assembly further includes a rack 5, which is slidably arranged in the chute. A gear 6 is fixedly connected to one side of each of the multiple air blocking members 3 close to the chute, and all the multiple gears 6 are meshed with the rack 5.

[0040] As Figure 1As shown, the sliding groove is arranged on one side of the ventilation support 2, and the rack 5 is arranged in the sliding groove and can slide in the first direction. The rotating shaft of each of the plurality of wind-blocking pieces 3 is fixedly connected with a gear 6, and the plurality of gears 6 are engaged with the rack 5. When the motor drives one of the wind-blocking pieces 3 to flip, the corresponding gear 6 drives the rack 5 to slide in the first direction, thereby driving the remaining gears 6 to rotate, so that the remaining wind-blocking pieces 3 flip relative to the ventilation support 2.

[0041] Further, the motor can also be replaced by a small pneumatic or hydraulic piston rod. The piston rod is arranged in the sliding groove, and the telescopic end of the piston rod is fixedly connected with a sliding rod. The sliding rod can slide in the sliding groove, and a connecting rod is rotatably connected to the sliding rod. The number of the connecting rods corresponds to the number of the wind-blocking pieces 3, and the connecting rods are fixed to the ends of the rotating shafts of the wind-blocking pieces 3 in the sliding groove. The piston rod drives the sliding rod to slide in the sliding groove, thereby driving the wind-blocking pieces 3 to flip relative to the fan body 1, so as to control the opening and closing of the first flow port 12.

[0042] In a preferred embodiment, the two ends of the sliding groove are respectively provided with limit blocks 7. The two limit blocks 7 limit the rack 5 from the two sides of the first direction.

[0043] As shown in the figure, Figure 1 The two limit blocks 7 are detachably connected to the two ends of the sliding groove, which can limit the sliding of the rack 5. The detachable limit blocks 7 facilitate the disassembly of the transmission structure in the sliding groove, and facilitate subsequent maintenance.

[0044] In a preferred embodiment, the slot of the sliding groove is closed by a first dust cover 8 and a second dust cover 9.

[0045] As shown in the figure, Figure 1 The driving piece 4 is also arranged in the sliding groove, and the first dust cover 8 and the second dust cover 9 can be buckled with the two parts of the sliding groove, thereby relatively sealing the inside of the sliding groove. When the exhaust module 100 is working, dust or impurities cannot enter the sliding groove, which affects the transmission between the driving piece 4 and the gear 6 and the rack 5.

[0046] In a preferred embodiment, the filter device comprises an inner filter screen 10. The inner filter screen 10 covers the air inlet of the fan body 1, and a plurality of second flow ports 13 are arranged on the inner filter screen 10.

[0047] As shown in the figure, Figure 1 The inner filter screen 10 is arranged at the air inlet of the fan body 1, and a plurality of second flow ports 13 are arranged on the inner filter screen 10. The plurality of second flow ports 13 are arranged in a grid pattern, and the flow area of the second flow port 13 is small, which can prevent sundries from being sucked into the fan.

[0048] In a preferred embodiment, the filter device further comprises a filter 11, which is arranged between the fan body 1 and the ventilation support 2.

[0049] As shown in Figure 1 Filter 11 can adopt air filter element in the prior art, which is a porous structure and is arranged at the air outlet of fan body 1 to effectively adsorb dust and impurities in the air.

[0050] In a preferred embodiment, sound-absorbing structure is arranged on one side of wind-blocking member 3 close to ventilation support 2.

[0051] As shown in Figure 1 Sound-absorbing sponge can be attached to one side of wind-blocking member 3 close to ventilation support 2 to buffer the collision between wind-blocking member 3 and ventilation support 2 during vehicle driving and reduce the noise generated by the collision. Magnets can also be arranged at the corresponding positions of ventilation support 2 and wind-blocking member 3 to relatively fix wind-blocking member 3 and ventilation support 2 by magnetic force when wind-blocking member 3 is turned to close first flow-through opening 12, so as to avoid the collision between wind-blocking member 3 and ventilation support 2 and the noise generated thereby.

[0052] Embodiment 2

[0053] The embodiment provides a vehicle fresh air exchange system, which comprises an ECU module and an air inlet module and further comprises the air outlet module 100 for the cabin fresh air system according to Embodiment 1. The ECU module is electrically connected to the air inlet module and the air outlet module 100 through a vehicle bus.

[0054] As shown in Figure 4 and Figure 5 The air inlet module can adopt the air inlet module of an air conditioner system of an automobile. An installation opening 14 is formed in one side of a trunk of the vehicle to communicate the inside and outside of the vehicle cabin. The air outlet module is arranged at the installation opening 14. The ECU module can monitor the temperature of the inside and outside of the vehicle and the concentration of air pollutants in the vehicle. When the ECU module monitors that the temperature or the concentration of pollutants in the vehicle reaches a threshold value, the ECU module can start the air inlet module and / or the air outlet module 100. Fresh air from the outside enters the vehicle cabin through the air inlet module, and the air in the vehicle cabin is discharged to the outside environment through the air outlet module 100, so as to update the air in the vehicle cabin from front to back. The ECU module can automatically adjust the operating state of the air inlet module and the air outlet module 100 to realize different working modes. For example, the air inlet module and the air outlet module 100 work simultaneously, the air in the vehicle cabin can be exchanged with the outside environment at the maximum efficiency, or the air inlet module works alone, the air outlet module 100 is opened, or the air inlet module is opened, and the air outlet module 100 works alone. In actual use, the ECU module can also automatically adjust the fan speed of the air inlet module and the air outlet module 100 according to the current situation. When the environmental parameters inside and outside the vehicle are close, the ECU module can reduce the fan speed of the air inlet module and the air outlet module 100 to keep the air inside and outside the vehicle in the exchange state while reducing energy consumption. When the environmental parameters inside and outside the vehicle are equal, the ECU module can stop the air inlet module and the air outlet module 100.

[0055] The principles and implementations of the present application are described herein with specific examples. The above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred embodiment of the present application. It should be pointed out that, due to the limitation of language expression, there are infinite specific structures objectively. For ordinary skilled persons in the art, without departing from the principles of the present application, some improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner. These improvements, refinements, changes or combinations, or the application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. An exhaust module for a cabin fresh air system, installed on the side of the rear trunk of a vehicle, electrically connected to the ECU module of the vehicle, used to cooperate with the front air inlet of the vehicle under the control of the ECU module, to achieve the flow of gas from front to back in the cabin of the vehicle and exchange with external gas, characterized in that, The exhaust module (100) comprises: a fan body (1); a filtering device arranged on the fan body (1) for filtering dust and harmful substances and preventing sundries in the vehicle from entering the fan body (1); a damper assembly arranged at an air outlet of the fan body (1), the damper assembly comprising one or more wind-blocking pieces (3) for closing the air outlet, the damper assembly having a first state and a second state, when in the first state, the wind-blocking pieces (3) close the air outlet, and when in the second state, the air outlet is open.

2. The exhaust module for a cockpit fresh air system of claim 1, wherein, The damper assembly further comprises a driving member (4) in driving connection with all the wind-blocking pieces (3), the driving member (4) being used for synchronously driving all the wind-blocking pieces (3) to rotate relative to the fan body (1) so as to switch the damper assembly between the first state and the second state, thereby controlling the opening and closing of the air outlet.

3. The exhaust module for a cockpit fresh air system of claim 2, wherein, The damper assembly further comprises a ventilation support (2) arranged at the air outlet of the fan body (1), the ventilation support (2) being provided with one or more first flow-through openings (12) in communication with the air outlet in a first direction; the wind-blocking pieces (3) are rotatably connected to the ventilation support (2), and each wind-blocking piece (3) is provided with at least one first flow-through opening (12); when in the first state, the wind-blocking pieces (3) close all the first flow-through openings (12), and all the first flow-through openings (12) are closed; when in the second state, all the first flow-through openings (12) are open.

4. The exhaust module for a cockpit fresh air system of claim 3, wherein, The ventilation support (2) is provided with a sliding groove extending in the first direction, and the damper assembly further comprises a rack (5) slidingly arranged in the sliding groove, and a plurality of gears (6) are fixedly connected to one side of the sliding groove close to the rack (5), and the plurality of gears (6) are in meshing connection with the rack (5).

5. An exhaust module for a cockpit fresh air system according to claim 4, wherein, Both ends of the sliding groove are provided with limiting blocks (7) for limiting the rack (5) along two sides of the first direction.

6. The exhaust module for a cockpit fresh air system of claim 4, wherein, The groove opening of the sliding groove is closed by a first dustproof cover (8) and a second dustproof cover (9).

7. The exhaust module for a cockpit fresh air system of claim 1, wherein, The filtering device comprises an inner filter screen (10) covering the air inlet of the fan body (1), and the inner filter screen (10) is provided with a plurality of second flow-through openings (13) corresponding to the position of the air inlet.

8. The exhaust module for a cockpit fresh air system of claim 3, wherein, The filtering device further comprises a filter (11) arranged between the fan body (1) and the ventilation support (2).

9. The exhaust module for a cockpit fresh air system of claim 3, wherein, The side of the wind-blocking piece (3) close to the ventilation support (2) is provided with a sound-absorbing structure.

10. A vehicle fresh air exchange system comprising an ECU module and an intake module, characterized by, Further comprising an exhaust module for a cabin fresh air system according to any one of claims 1-9, and the ECU module is electrically connected with the air inlet module and the exhaust module (100) through a vehicle bus.

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