Vehicle body, vehicle built-in air conditioner air duct structure and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a vehicle body, a vehicle built-in air conditioner air duct structure and a vehicle. The car body comprises a car roof and a side wall, an air duct forming part used for forming an air conditioner air duct in a surrounding mode is arranged at the joint of the car roof and the side wall, and a fresh air channel communicated with the outside is formed in the air duct forming part. The fresh air channel is provided with an inner opening used for being communicated with an air inlet channel of a temperature regulator in the air conditioner air channel so that air outside the automobile can enter the automobile when a draught fan of the temperature regulator operates. When the temperature regulator works, the fan is used for supplying air into the compartment to regulate the temperature, meanwhile, external air can be supplied into the compartment through the fresh air channel via the temperature regulator, fresh air is introduced into a vehicle, the air quality in the compartment is improved, and the comfort of passengers is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a vehicle body, a vehicle-mounted air conditioning duct structure, and a vehicle. Background Technology

[0002] The air conditioning system of buses and coaches works in conjunction with the air ducts on the roof of the passenger compartment to deliver air to various areas inside the compartment. The evaporator, condenser, compressor, and other components of the air conditioning system are distributed throughout the vehicle body and interconnected by ducts. To save interior space, some buses currently use duct-in evaporators, where the evaporator is located inside the air ducts on the roof, where the ducts meet the roof and side panels. The installation structure of this built-in evaporator can be seen in Chinese Utility Model Patent CN210821743U, which discloses a decorative cover for a built-in air conditioning evaporator in a bus. The outer wall of the decorative cover has several return air grille mounting openings for installing air conditioning return air grilles. These openings connect to the air conditioning return air inlets. Both ends of the cover have air outlet openings that connect to the air conditioning outlets at the bottom of the built-in evaporator. The edges of the air conditioning return air inlets are sealed with return air sealing cotton. By using this sealing cotton around the return air inlets of the built-in evaporator, a seal is ensured, achieving… The return air and the outlet air are isolated to ensure that the cold air blown out of the air conditioner outlet will not return to the air conditioner return air outlet. The inner cavity of the decorative cover body is equipped with an air guide isolation bracket. The two ends of the air guide isolation bracket are connected to the two end walls of the inner cavity of the decorative cover body, respectively. The air guide isolation bracket divides the bottom of the inner cavity of the decorative cover body into a return air channel and an outlet air channel. The top of the outlet air channel is connected to the air conditioner outlet, and the two ends are connected to the outlet air opening of the decorative cover, respectively. By setting up the air guide isolation bracket, it is ensured that the air conditioner outlet air is smoothly guided to the front air duct and the rear air duct through the two outlet air openings of the decorative cover, so as to realize the normal operation of the air conditioner and the smooth flow of cold air.

[0003] The area enclosed by the aforementioned decorative cover, roof, and side panels constitutes part of the overall air duct. The air conditioning evaporator is installed within the air duct formed by the decorative cover. The cold air blown out by the air conditioning evaporator enters the air duct and, in addition to entering the passenger compartment through the corresponding air outlet, can also pass through the front and rear sections of the air duct, and then enter the passenger compartment through air outlets in other parts of the air duct. The air inside the passenger compartment returns to the air conditioning evaporator through the return air vents on the side walls of the air duct for circulation. The air duct is located on both the left and right sides of the passenger compartment roof and extends along the length of the vehicle to cover the passenger area. The part where the roof and side panels meet is used to cooperate with the air duct floor plate and air duct vertical plate of the inner frame located inside the passenger compartment to form the air conditioning air duct. The air conditioning evaporator constitutes the temperature regulator. The evaporator is equipped with a fan and has an air inlet channel. When the fan is running, outside air enters the evaporator body through the air inlet channel for heat exchange, and then is blown out by the fan.

[0004] The aforementioned air conditioning duct structure uses a built-in air conditioning evaporator in conjunction with air outlets and return air inlets to circulate air inside the vehicle to regulate the temperature inside the vehicle. However, buses and coaches usually have a lot of passengers, and when the air conditioning is on, the doors and windows are closed. After a long time, the air becomes quite stale, which can easily cause dizziness and affect the comfort of passengers. Utility Model Content

[0005] The purpose of this utility model is to provide a vehicle body that solves the problem that the current vehicle built-in air conditioning duct structure for circulating air inside the passenger compartment is prone to low air quality after long-term use, which affects passenger comfort. The purpose of this utility model is also to provide a vehicle built-in air conditioning duct structure and vehicle to solve the above problems.

[0006] The technical solution for the vehicle body of this utility model is:

[0007] A vehicle body includes a roof and side panels. The junction of the roof and side panels has a duct forming portion for forming an air conditioning duct. The duct forming portion is provided with a fresh air passage communicating with the outside. The fresh air passage has an inner opening for communicating with the air inlet passage of a temperature regulator in the air conditioning duct so as to allow outside air to enter the vehicle body when the fan of the temperature regulator is running.

[0008] Beneficial effects: This utility model improves upon the existing vehicle body technology by setting up a fresh air duct at the junction of the vehicle body roof and side panels, which forms the air conditioning duct. This fresh air duct connects to the air intake duct of the temperature regulator in the air conditioning duct. When the temperature regulator is working, while its fan supplies air to the passenger compartment to regulate the temperature, it can also introduce outside air into the passenger compartment through the fresh air duct, thereby improving the air quality inside the passenger compartment and enhancing passenger comfort.

[0009] Furthermore, the fresh air duct is located on the side panel of the vehicle body.

[0010] Furthermore, the air inlet of the fresh air duct leading to the outside faces downwards.

[0011] Furthermore, the side panel of the vehicle body includes a frame, and the top of the frame of the side panel is provided with an air passage that runs through the inside and outside. A decorative cover is provided at the outer opening of the air passage. The decorative cover has a downward opening and the opening is used to form an air inlet for a fresh air duct. The fresh air duct includes the inner cavity of the decorative cover and the air passage.

[0012] Furthermore, the air inlet of the fresh air duct is equipped with a filter.

[0013] The technical solution of this utility model for the vehicle built-in air conditioning duct structure is as follows:

[0014] A vehicle-mounted air conditioning duct structure includes a vehicle body and an inner frame that forms the air conditioning duct with the duct forming part of the vehicle body. A temperature regulator is installed inside the air conditioning duct, and the inner frame has an air outlet corresponding to the fan outlet of the temperature regulator. The vehicle body includes a roof and side panels. The junction of the roof and side panels has a duct forming part for forming the air conditioning duct. The duct forming part has a fresh air passage that communicates with the outside. The fresh air passage has an inner opening for communicating with the air inlet passage of the temperature regulator inside the air conditioning duct so that outside air can enter the vehicle when the fan of the temperature regulator is running.

[0015] Beneficial effects: This utility model improves upon the existing vehicle-mounted air conditioning duct structure by setting up a fresh air duct at the junction of the vehicle roof and side panels where the air conditioning duct is formed. This fresh air duct connects to the air intake duct of the temperature regulator within the air conditioning duct. When the temperature regulator is working, while its fan supplies air to the passenger compartment to regulate the temperature, it can also introduce outside air into the passenger compartment through the fresh air duct, thereby improving the air quality inside the passenger compartment and enhancing passenger comfort.

[0016] Furthermore, the fresh air duct is located on the side panel of the vehicle body.

[0017] Furthermore, the air inlet of the fresh air duct leading to the outside faces downwards.

[0018] Furthermore, the side panel of the vehicle body includes a frame, and the top of the frame of the side panel is provided with an air passage that runs through the inside and outside. A decorative cover is provided at the outer opening of the air passage. The decorative cover has a downward opening and the opening is used to form an air inlet for a fresh air duct. The fresh air duct includes the inner cavity of the decorative cover and the air passage.

[0019] Furthermore, the air inlet of the fresh air duct is equipped with a filter.

[0020] Furthermore, the temperature regulator includes a housing, which is fixedly installed inside the air conditioning duct. An air conditioning evaporator and a heating core are installed inside the housing. The air conditioning evaporator and the heating core are located on the air intake path of the air intake duct and upstream of the fan.

[0021] Furthermore, the temperature regulator is equipped with a return air duct that connects to the interior space of the carriage.

[0022] Furthermore, the air inlet duct of the temperature regulator has an inlet space that is connected to both the return air duct and the fresh air duct. The inlet space is equipped with a damper, which has a fresh air position that completely or partially separates the return air duct from the air inlet duct while connecting the fresh air duct to the air inlet duct, a return air position that connects the return air duct to the air inlet duct while completely or partially separating the fresh air duct from the air inlet duct, and a mixing air position that connects both the fresh air duct and the return air duct to the air inlet duct.

[0023] The technical solution of this utility model for the vehicle is:

[0024] A vehicle includes an internal air conditioning duct structure. The internal air conditioning duct structure includes a vehicle body and an inner frame that forms the air conditioning duct with the duct forming part of the vehicle body. A temperature regulator is installed inside the air conditioning duct. An air outlet corresponding to the fan outlet of the temperature regulator is provided on the inner frame. The vehicle body includes a roof and side panels. The junction of the roof and side panels has a duct forming part for forming the air conditioning duct. The duct forming part has a fresh air passage communicating with the outside. The fresh air passage has an inner opening for communicating with the air inlet passage of the temperature regulator inside the air conditioning duct so that outside air can enter the vehicle when the fan of the temperature regulator is running.

[0025] Beneficial effects: This utility model improves upon the existing vehicle-mounted air conditioning duct structure by setting up a fresh air duct at the junction of the vehicle roof and side panels where the air conditioning duct is formed. This fresh air duct connects to the air intake duct of the temperature regulator within the air conditioning duct. When the temperature regulator is working, while its fan supplies air to the passenger compartment to regulate the temperature, it can also introduce outside air into the passenger compartment through the fresh air duct, thereby improving the air quality inside the passenger compartment and enhancing passenger comfort.

[0026] Furthermore, the fresh air duct is located on the side panel of the vehicle body.

[0027] Furthermore, the air inlet of the fresh air duct leading to the outside faces downwards.

[0028] Furthermore, the side panel of the vehicle body includes a frame, and the top of the frame of the side panel is provided with an air passage that runs through the inside and outside. A decorative cover is provided at the outer opening of the air passage. The decorative cover has a downward opening and the opening is used to form an air inlet for a fresh air duct. The fresh air duct includes the inner cavity of the decorative cover and the air passage.

[0029] Furthermore, the air inlet of the fresh air duct is equipped with a filter.

[0030] Furthermore, the temperature regulator includes a housing, which is fixedly installed inside the air conditioning duct. An air conditioning evaporator and a heating core are installed inside the housing. The air conditioning evaporator and the heating core are located on the air intake path of the air intake duct and upstream of the fan.

[0031] Furthermore, the temperature regulator is equipped with a return air duct that connects to the interior space of the carriage.

[0032] Furthermore, the air inlet duct of the temperature regulator has an inlet space that is connected to both the return air duct and the fresh air duct. The inlet space is equipped with a damper, which has a fresh air position that completely or partially separates the return air duct from the air inlet duct while connecting the fresh air duct to the air inlet duct, a return air position that connects the return air duct to the air inlet duct while completely or partially separating the fresh air duct from the air inlet duct, and a mixing air position that connects both the fresh air duct and the return air duct to the air inlet duct. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of an embodiment of the vehicle-mounted air conditioning duct structure of this utility model;

[0034] Figure 2 for Figure 1 A schematic diagram of the air conditioner evaporator module in return air mode;

[0035] Figure 3 for Figure 1 A schematic diagram of the air conditioner evaporator module in fresh air mode;

[0036] Figure 4 for Figure 1 A schematic diagram of the air conditioner evaporator module in mixed air mode;

[0037] Figure 5 for Figure 1 A schematic diagram of the structure of the decorative cover in the image;

[0038] Figure 6 for Figure 5 A schematic diagram of the filter structure at the air inlet of the fresh air duct;

[0039] Figure 7 for Figure 1 A schematic diagram of the internal frame structure.

[0040] In the diagram: 11. Roof; 12. Side panel; 13. Decorative cover; 131. Air vent; 14. Fresh air duct; 15. Filter; 20. Air conditioning duct; 21. Duct floor; 22. Duct vertical plate; 30. Air conditioning evaporator module; 31. Filter element; 32. Evaporator body; 33. Fan; 34. Air damper; 35. Motor; 36. Return air duct; 37. Housing; 38. Side opening; 39. Inlet space; 40. Air mask assembly; 50. Return air transition channel; 61. Return air vent. Detailed Implementation

[0041] The basic concept of this utility model is to set up a fresh air channel in the part of the vehicle body that forms the air conditioning duct. By using the temperature regulator in the air conditioning duct to send air into the passenger compartment, fresh air can be introduced into the vehicle at the same time, thereby improving passenger comfort.

[0042] The present invention will be described in detail below with reference to specific embodiments.

[0043] An embodiment of the vehicle built-in air conditioning duct structure of this utility model:

[0044] like Figure 1 As shown, the vehicle's built-in air conditioning duct structure includes the vehicle body, internal frame, and temperature regulator. The vehicle body includes the roof 11 and side panels 12. Figure 1 Only a portion of the roof 11 and side wall 12 at their junction is shown. The inner frame includes an air duct vertical plate 22 and an air duct floor plate 21. The inner frame is located on the side of the roof 11 and side wall 12 closest to the interior space of the vehicle. The inner frame, together with the roof 11 and side wall 12, forms an air conditioning duct 20. The air conditioning duct 20 is located at the junction of the roof 11 and side wall 12. The roof 11 and side wall 12 have air duct forming portions for forming the air conditioning duct 20, that is, the air duct forming portions and the inner frame form the air conditioning duct 20. The air conditioning duct 20 has side walls located on the roof 11, side walls located on the side wall 12, side walls located on the air duct vertical plate 22, and side walls located on the air duct floor plate 21. The air conditioning duct 20 allows for the flow of cold air generated by the vehicle's air conditioning system. The vehicle can be a bus or a coach.

[0045] The vehicle body has left and right side panels 12, and air conditioning ducts 20 are provided at the junction of the left and right side panels 12 and the roof 11. That is, there are air conditioning ducts 20 at the left and right corners of the bottom of the vehicle body. Figure 1 The diagram shows the vertical cross-sectional structure of one side of the air conditioning duct 20. The air conditioning duct 20 extends in the front-to-back direction and has an internal cavity for ventilation and to provide installation space for corresponding components. The exterior of the air conditioning duct 20 is the interior space of the passenger compartment. Located at the top of the passenger compartment, the air conditioning duct 20 directs air downwards into the passenger compartment.

[0046] In this embodiment, the evaporator and condenser of the vehicle's air conditioning system are distributed separately. The evaporator is arranged within the air conditioning duct 20, and evaporators can be arranged in both the left and right sides of the air conditioning duct 20. The evaporator is the air conditioning evaporator module 30, which constitutes a temperature regulator. Figure 2 The air conditioning evaporator module 30 includes a housing 37 and a filter element 31, an evaporator body 32, and a fan 33 installed inside the housing 37. The housing 37 is fixed to the vehicle body and has an air intake channel. The filter element 31 and the evaporator body 32 are arranged on the air intake path of the air intake channel. The air intake channel is connected to the inlet of the fan 33. When the fan 33 is running, external air is drawn into the air intake channel of the air conditioning evaporator module 30, filtered by the filter element 31, and then heat exchanged in the evaporator body 32 to become cold air. The cold air is discharged from the outlet of the fan 33 into the air conditioning duct 20 and then enters the passenger compartment from the air outlet of the air conditioning duct 20.

[0047] In this embodiment, the air conditioner evaporator module 30 is used as a temperature regulator to deliver cold air into the vehicle compartment, and the condenser is the indoor unit. In other embodiments, the air conditioner can also provide heating; in this case, the indoor unit built into the air conditioning duct 20 serves as the air conditioner condenser, which acts as a temperature regulator to deliver warm air into the vehicle compartment. In other embodiments, electric heating or water heating can also be used to deliver warm air into the vehicle compartment; in this case, the temperature regulator can be a PTC electric heater or a water heating core.

[0048] The inner frame is equipped with an air outlet corresponding to the outlet of the fan 33 of the temperature regulator. The air outlet is usually located on the bottom plate 21 of the air duct and can deliver air downwards. The air outlet is equipped with a wind mask assembly 40, which usually integrates components such as air supply grille and horn. The cold air in the air conditioning duct 20 can enter the carriage through the wind mask assembly 40.

[0049] The air conditioning evaporator module 30 has a return air duct 36 inside its housing 37. The return air duct 36 is separated from the space inside the housing 37 where the filter element 31, evaporator body 32, and fan 33 are installed. The return air duct 36 is connected to the inlet of the air inlet duct and communicates with the interior space of the vehicle compartment. The air conditioning duct 20 has a return air outlet 61, which is connected to the return air duct 36 through a return air transition channel 50, so that the air inside the vehicle compartment can return to the air conditioning evaporator module 30. This allows the recirculated air inside the vehicle to be introduced into the air conditioning evaporator module 30, reducing the air conditioning heat load and achieving energy saving. In other embodiments, the return air duct and return air outlet may not be provided separately. Instead, the air can return through the gap connecting the air conditioning duct and the vehicle compartment, and the air in the air conditioning duct that is far from the fan outlet can return to the air inlet duct.

[0050] The vehicle body's air duct forming section is equipped with a fresh air duct 14 that communicates with the outside. The fresh air duct 14 has an inner opening for connecting with the air intake duct of the air conditioning evaporator module 30 within the air conditioning duct 20, allowing outside air to enter the vehicle interior when the fan 33 is running. When the air conditioning evaporator module 30 is operating, while its fan 33 supplies air to the passenger compartment to regulate the temperature, it can also introduce outside air into the passenger compartment through the fresh air duct 14 via the air intake duct of the air conditioning evaporator module 30, thereby improving the air quality inside the passenger compartment and enhancing passenger comfort.

[0051] The fresh air duct 14 is installed on the side panel 12 of the vehicle body, adapting to the position of the air conditioning evaporator module 30, avoiding openings in the roof 11, and facilitating dust and water prevention. In other embodiments, depending on the location requirements, a fresh air duct can also be opened on the roof portion of the air conditioning duct, and a shield can be installed at the air inlet of the fresh air duct to prevent rainwater from entering.

[0052] The air inlet of the fresh air duct 14 faces downwards, allowing it to communicate with the outside atmosphere. This downward orientation prevents rainwater and debris from falling directly into the fresh air duct 14. In other embodiments, the air inlet of the fresh air duct can also face one side of the vehicle body, in which case a water-retaining eave can be installed above the air inlet.

[0053] The vehicle body includes a frame and a skin. The frame includes a frame forming the side panel 12 and a frame forming the roof 11, which are fixed together. The top of the side panel 12 frame connects to the roof 11 frame. The top of the side panel 12 frame has an internally and externally perforated air duct. A decorative cover 13 covers the outer opening of the air duct, and the inner opening connects to the fresh air duct 14 of the air conditioning evaporator module 30. The inner opening forms the inner opening of the fresh air duct 14, which connects to the housing 37 of the air conditioning evaporator module 30, thus separating the internal space of the air conditioning duct 20 from the fresh air duct 14. The decorative cover 13 has a downward-facing opening that forms the air inlet of the fresh air duct 14. The fresh air duct 14 includes the inner cavity of the decorative cover 13 and the air duct on the side panel 12. The air duct runs through both sides, and the decorative cover 13 is fastened to the outer opening of the air duct of the side panel 12. The lower opening of the decorative cover 13 forms a downward-facing air inlet. The structure is simple and easy to manufacture and maintain. In other embodiments, a convex bending part can be directly stamped into the skin of the side panel, and the bending part can be used to form a downward-facing air inlet.

[0054] Combination Figure 5 , Figure 6 The air inlet of the fresh air duct 14 is equipped with a filter screen 15, which is sealed and installed on the decorative cover 13. The filter screen 15 is made of aluminum mesh and has multiple through holes arranged in a front-to-back pattern. The through holes are hexagonal and arranged in rows, with multiple through holes in each row along the front-to-back direction. Adjacent rows of through holes are staggered, which helps to increase the ventilation area and ensures that coarse filtration is formed at the air inlet while ensuring air intake. This prevents poplar catkins, willow catkins, leaves, etc. in the air from entering the air conditioner and delays the cleaning and replacement time of the filter element 31. In other embodiments, the air inlet may not be equipped with a filter screen, and filtration may be carried out solely by the filter element of the air conditioner evaporator module.

[0055] The decorative cover 13 has an air passage interface 131 on the side that is in contact with the frame of the side wall 12. The air passage interface 131 is connected to the air passage duct on the side wall frame so that the decorative cover 13 seals and covers the outward passage of the air passage duct of the side wall frame, allowing fresh air to pass through.

[0056] In this embodiment, the temperature regulator is an air conditioner evaporator module 30. An evaporator body 32 for heat exchange is installed inside the housing 37 of the temperature regulator, which can work with the fan 33 to blow out cold air. In other embodiments, the housing of the temperature regulator can also integrate an evaporator body and a heating core. The evaporator body constitutes an air conditioner evaporator. The air conditioner evaporator and the heating core are located on the air inlet path of the air inlet channel and upstream of the fan. The air conditioner evaporator can blow out cold air, and the heating core can blow out warm air. When one of the air conditioner evaporator or the heating core is working, the other is off.

[0057] The inner frame has a portion located on the side of the air duct upright 22 facing away from the air conditioning duct 20 and connected to the air duct base plate 21; this portion forms the luggage rack. A connector is fixed to the top of the air duct upright 22, and the connector is fixedly connected to the roof 11. The connector has a return air vent 61. Figure 7 There are multiple return air vents 61, which are spaced apart on the connector along the front-to-back direction. The return air vents 61 are connected from left to right. The number and position of the return air vents 61 are set according to the requirements. One end of the return air transition channel 50 is connected to the connector and communicates with the return air vents 61. The other end of the return air transition channel 50 is connected to the housing 37 and communicates with the return air channel 36. The return air vents 61 are located above the air duct upright plate 22 and close to the roof 11, and are also located above the luggage rack to ensure smooth return air.

[0058] The filter element 31 of the air conditioner evaporator module 30 is inclined, with the upper end of the filter element 31 being farther away from the side wall 12 than the lower end. The evaporator body 32 is located on the side of the filter element 31 that is farther away from the side wall 12, and the fan 33 is located on the side of the evaporator body 32 that is farther away from the side wall 12, with the outlet of the fan 33 facing downwards. The space inside the housing 37 located on the side of the filter element 31 near the side wall 12 forms the inlet space 39 of the air inlet channel. The side wall of the housing 37 near the side wall 12 has a side opening 38 that connects to the inner opening of the fresh air channel 14. The side opening 38 communicates with the inlet space 39. The fresh air channel 14 on the side wall 12 and the air inlet channel of the air conditioner evaporator module 30 are connected left and right respectively, resulting in a compact structure and saving space. The return air channel 36 is located above the chamber inside the housing 37 where the filter element 31, evaporator body 32, and fan 33 are installed. One end of the return air channel 36, away from the side wall 12, connects to the return air transition channel 50, and the other end communicates with the inlet space 39.

[0059] The inlet space 39 of the air inlet duct of the air conditioner evaporator module 30 is connected to the return air duct 36 and the fresh air duct 14. The fresh air duct 14, the return air duct 36, and the air inlet duct are separated from the space outside the air conditioner evaporator module 30 in the air conditioning duct 20 to prevent air recirculation in the air conditioning duct 20. The inlet space of the air inlet duct is equipped with a damper 34 and a motor 35 for driving the damper 34. The damper 34 has a fresh air position that partially separates the return air duct 36 from the air inlet duct but connects the fresh air duct 14 to the air inlet duct, a return air position that connects the return air duct 36 to the air inlet duct but partially separates the fresh air duct 14 from the air inlet duct, and a mixing position that connects both the fresh air duct 14 and the return air duct 36 to the air inlet duct.

[0060] The side opening 38 connects to the fresh air duct on the side enclosure, the return air duct 36 is located above the side opening 38, and the damper 34 is located between the return air duct 36 and the side opening 38. The damper can rotate under the drive of a motor. When the damper 34 moves to the fresh air position, as... Figure 3 As shown, in fresh air mode, the upper part of damper 34 partially separates the return air duct 36 from the intake air duct, blocking part of the space connecting the return air duct 36 and the intake air duct, allowing a small flow of return air. Meanwhile, the fresh air duct 14 is completely unobstructed and connected to the intake air duct, allowing a large flow of fresh air. When damper 34 moves to the return air position, as... Figure 2 As shown, in return air mode, the lower part of damper 34 partially separates the fresh air duct 14 from the intake air duct, blocking part of the space connecting the fresh air duct 14 and the intake air duct, allowing a small flow of fresh air. The return air duct 36, however, is unobstructed and connects to the intake air duct, allowing a large flow of return air. When damper 34 is in the mixing position, as... Figure 4 As shown, in the mixed air mode, the damper 34 is located above the side wall of the housing with the side opening 38, allowing the fresh air duct 14 to be connected to the air inlet duct and the return air duct 36 to be connected to the air inlet duct without obstruction, so that a large flow of return air and fresh air can be introduced.

[0061] The fan 33 is controlled by a controller to select a suitable air supply mode. In other embodiments, no damper may be provided, and fresh air may be continuously introduced into the carriage. In this case, a fresh air duct with a relatively small flow rate can be set. In other embodiments, the damper may be configured to completely isolate the fresh air duct when in the return air position and completely isolate the return air duct when in the fresh air position.

[0062] The system utilizes interior and exterior temperature sensors, an interior carbon dioxide sensor, and a controller to regulate the vehicle's interior temperature and enable active ventilation. It introduces fresh air into the vehicle, creating a clean and refreshing environment and enhancing passenger comfort and the overall driving experience.

[0063] Embodiments of the vehicle body of this utility model:

[0064] The vehicle body in this embodiment is the same as the vehicle body structure in the embodiment with the built-in air conditioning duct structure described above, and will not be described again here.

[0065] Embodiments of the vehicle of this utility model:

[0066] The vehicle includes a built-in air conditioning duct structure, which is identical in structure to the embodiment of the built-in air conditioning duct structure described above, and will not be repeated here.

[0067] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vehicle body comprising a roof and a side wall, the roof and the side wall having a duct forming portion for forming an air conditioning duct at a joint between the roof and the side wall, characterized in that, The air duct forming part is provided with a fresh air channel which communicates with the outside, and the fresh air channel has an inner opening for communicating with an air inlet channel of a temperature regulator in the air conditioner air duct to allow outside air to enter the vehicle interior when the fan of the temperature regulator is running.

2. The vehicle body of claim 1, wherein, The fresh air channel is arranged on a side wall of the vehicle body.

3. The vehicle body of claim 2, wherein, The air inlet opening of the fresh air channel faces downward.

4. The vehicle body of claim 3, wherein, The side wall of the vehicle body comprises a framework, and the top of the framework of the side wall is provided with a through air hole which communicates between the inside and outside, and a decorative cover is arranged on the outer opening of the through air hole, the decorative cover has a downward opening which forms the air inlet opening of the fresh air channel, and the fresh air channel comprises an inner cavity of the decorative cover and the through air hole.

5. A vehicle body according to any one of claims 1 to 4, characterised in that The air inlet opening of the fresh air channel is provided with a filter screen.

6. A vehicle built-in air conditioning duct structure characterized by comprising: The vehicle body and an inner frame body which enclose an air conditioner air duct with the air duct forming part of the vehicle body are provided, a temperature regulator is arranged in the air conditioner air duct, and the inner frame body is provided with an air outlet opening corresponding to the fan outlet of the temperature regulator.

7. The vehicle air conditioning duct structure according to claim 6, wherein The temperature regulator comprises a housing which is fixedly arranged in the air conditioner air duct, and an air conditioner evaporator and a heating core are arranged in the housing, and the air conditioner evaporator and the heating core are located on the air inlet path of the air inlet channel and upstream of the fan.

8. The air conditioning duct structure according to claim 6, wherein The temperature regulator is provided with a return air channel which communicates with the interior space of the vehicle cabin.

9. The vehicle air conditioning duct structure according to claim 8, wherein The air inlet channel of the temperature regulator has an inlet space which communicates with the return air channel and the fresh air channel, and the inlet space is provided with a damper, the damper has a fresh air position which completely or incompletely separates the return air channel from the air inlet channel and connects the fresh air channel with the air inlet channel, a return air position which connects the return air channel with the air inlet channel and completely or incompletely separates the fresh air channel from the air inlet channel, and a mixed air position which connects the fresh air channel and the return air channel with the air inlet channel.

10. A vehicle characterized by The vehicle built-in air conditioner air duct structure is provided.

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