Roof ventilation system, control methods and vehicles

Abstract

This application relates to the field of vehicle ventilation technology, specifically to a roof ventilation device, control method, and vehicle. The roof ventilation device includes a connecting ventilation duct and an air outlet assembly. The air outlet assembly is connected to the vehicle's HVAC unit via the connecting ventilation duct. The air outlet assembly includes a front air outlet and a rear air outlet formed in the roof. The front air outlet is used to blow air into the driver's cabin at the front of the vehicle, and the rear air outlet is used to blow air into the passenger cabin at the rear of the vehicle. The air outlets at the front and rear can be independently controlled in terms of air temperature. This roof ventilation device can effectively reduce the area of ​​the air vents on the dashboard, improve aesthetics, and enhance the temperature comfort of occupants under high summer temperatures.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle ventilation technology, in particular to a roof ventilation device, a control method and a vehicle. BACKGROUND

[0002] With the continuous development of the vehicle industry and the maturation of various researches, consumers not only value the riding comfort of vehicles, but also have more requirements for the appearance of the interior, and the fashion and technology-oriented appearance has become the mainstream trend of future automobile development. Major automakers have begun to meet user needs as much as possible and make radical changes to the appearance of the interior of the vehicle.

[0003] The appearance of the interior of the traditional automobile instrument panel accessories generally includes four face blowing air outlets (front left, middle left, middle right, front right), two left and right side defrost air outlets and two left and right front defrost air outlets. In particular, the area ratio of the four face blowing air outlets on the instrument panel is relatively large, and the appearance is poor, resulting in low satisfaction of consumers with the appearance of the instrument panel.

[0004] In addition, panoramic sunroofs are increasingly widely used in new energy vehicles, especially in pure electric vehicles. However, in summer, especially under the influence of sunlight, the temperature at the top of the passengers will be high, greatly affecting the comfort. If the cold air is blown out through the four face blowing air outlets to achieve passenger head cooling, it is generally necessary to increase the air speed or reduce the air temperature. However, a large enough air speed will increase the noise of the air blower, and a low enough air temperature will cause discomfort in other parts of the body. SUMMARY

[0005] The purpose of the present application is to provide a roof ventilation device, a control method and a vehicle, which can effectively reduce the area ratio of the face blowing air outlet on the instrument panel, improve the appearance, and improve the temperature comfort of the passengers in summer under high temperature exposure.

[0006] In order to achieve the above purpose, the technical solution adopted by the present application is as follows:

[0007] In a first aspect, the present application provides a roof ventilation device, comprising a communication air duct and an air outlet assembly, the air outlet assembly being in communication with a heating and ventilation air conditioning box of a vehicle through the communication air duct; the air outlet assembly comprises a front row air outlet and a rear row air outlet formed in a roof, the front row air outlet being used for blowing air to a front row cabin of the vehicle, the rear row air outlet being used for blowing air to a passenger cabin of the vehicle, and the front row air outlet and the rear row air outlet being independently controllable in terms of air outlet temperature.

[0008] According to the above technical means, the air blown by the HVAC box under the vehicle instrument panel in the face blowing mode is guided to the air outlet assembly on the side of the vehicle roof through the communication air duct, the air is blown to the driver's cabin of the front row of the vehicle through the front air outlet, and the air is blown to the passenger cabin of the rear row of the vehicle through the rear air outlet, so that the size and temperature of the air speed are consistent with the HVAC box under the instrument panel, and the temperature comfort of the passenger under high temperature exposure in summer can be improved. At the same time, since the air outlet assembly is moved from the instrument panel to the roof, the occupied space of the air outlet on the instrument panel can be effectively reduced, more modeling space is released for the instrument panel, and the aesthetic appearance is improved.

[0009] Further, the front air outlet includes a first air outlet and a second air outlet; the first air outlet is located on the corresponding side of the roof above the door frame on the left side of the driver's cabin; the second air outlet is located on the corresponding side of the roof above the door frame on the right side of the driver's cabin; wherein the first air outlet and the second air outlet can independently control the air outlet temperature.

[0010] According to the above technical means, the first air outlet blows air to the head position of the driver, and the second air outlet blows air to the head position of the co-driver, so that the blowing flow field of the front air outlet covers the head of the front passenger as much as possible, other parts of the human body are not blown, the comfort of the passenger is better considered, and the partition temperature control of the driver and the co-driver can be realized.

[0011] Further, the communication air duct includes: a first air duct for communicating the HVAC box and the first air outlet; a second air duct for communicating the HVAC box and the second air outlet; and a third air duct for communicating the HVAC box and the rear air outlet.

[0012] According to the above technical means, the HVAC box is communicated with the first air outlet through the first air duct, and hot air, cold air or external fresh air of the HVAC box is sent to the first air outlet; the HVAC box is communicated with the second air outlet through the second air duct, and hot air, cold air or external fresh air of the HVAC box is sent to the second air outlet; the HVAC box is communicated with the rear air outlet through the third air duct, and hot air, cold air or external fresh air of the HVAC box is sent to the rear air outlet, so as to realize the independent control of the first air outlet, the second air outlet and the rear air outlet, and improve the air volume of the front air outlet and the rear air outlet.

[0013] Further, the first air outlet is provided with a first temperature sensor, the second air outlet is provided with a second temperature sensor, and the rear air outlet is provided with a third temperature sensor; the roof ventilation device further comprises a circulating fan, an air inlet of the circulating fan is located in the driver cabin or the passenger cabin, air outlets of the circulating fan are in communication with the first air duct, the second air duct and the third air duct respectively, the air outlets of the circulating fan are provided with an adjusting assembly for adjusting the air volume entering the first air duct, the second air duct and the third air duct, and the air inlet of the circulating fan is provided with a fourth temperature sensor.

[0014] According to the above technical means, the temperature at the first air outlet is detected by the first temperature sensor, the temperature at the second air outlet is detected by the second temperature sensor, the temperature at the rear air outlet is detected by the third temperature sensor, and the air volume entering the first air duct, the second air duct and the third air duct is adjusted by the adjusting assembly according to the temperatures of the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the outlet air temperature of the heating and air conditioning box, so that the temperatures of the first air outlet, the second air outlet and the rear air outlet are different, the partition temperature control of the three areas is realized, the temperature demand of passengers at different positions is met, and the comfort of the vehicle is improved.

[0015] Further, the rear air outlet comprises a third air outlet and a fourth air outlet, the third air outlet is located on the corresponding side of the roof above the left door frame of the passenger cabin and is used for air supply to the head of the passenger on the left side of the passenger cabin, and the fourth air outlet is located on the corresponding side of the roof above the right door frame of the passenger cabin and is used for air supply to the head of the passenger on the right side of the passenger cabin.

[0016] According to the above technical means, the head position of the passenger on the left side of the rear row is supplied with air through the third air outlet, and the head position of the passenger on the right side of the rear row is supplied with air through the fourth air outlet, so that the air blowing of the rear air outlet covers the head of the passenger on the rear row as much as possible, and the comfort of the passenger is better taken into account.

[0017] Further, the first air duct is led out from the left side blow face air outlet of the heating and air conditioning box, extends along the main driver position A column of the vehicle, and is connected with the first air outlet; the second air duct is led out from the right side blow face air outlet of the heating and air conditioning box, extends along the co-driver position A column of the vehicle, and is connected with the second air outlet; the third air duct comprises a middle air duct and a third left air duct and a third right air duct in communication with the middle air duct, the middle air duct is led out from the central blow face air outlet of the heating and air conditioning box, extends along the bottom of the armrest box, and reaches the left and right B columns respectively, the third left air duct extends to the roof along the left B column and is in communication with the third air outlet, and the third right air duct extends to the roof along the right B column and is in communication with the fourth air outlet.

[0018] According to the above technical means, the first air duct and the second air duct are mostly arranged on the A pillars on the left and right sides of the vehicle, and the air blown by the HVAC box is respectively guided to the first air outlet and the second air outlet; one end of the middle air duct of the third air duct is communicated with the original central air outlet of the HVAC box, the middle air duct is communicated with the third left air duct and the third right air duct at the B pillar through the bottom of the center console and the interior carpet, and the third left air duct and the third right air duct are respectively communicated with the third air outlet and the fourth air outlet, so that the hot air, the cold air or the external fresh air of the HVAC box is delivered to the rear air outlet, the space is saved, and the arrangement is optimized.

[0019] Further, the front air outlet and the rear air outlet respectively include a plurality of through holes, and the shape of the through holes is any one of a transverse rectangle, a longitudinal rectangle and a longitudinal arc-shaped strip.

[0020] According to the above technical means, the through holes of the front air outlet and the rear air outlet are selected according to the required shape, and the air supply diversity is ensured by adopting a plurality of different shapes of the through holes, so as to meet the comfort requirement of the human body.

[0021] Further, the sum of the total areas of the front air outlet and the rear air outlet is greater than or equal to 42000mm 2 ; and / or the minimum cross-sectional area of the first air duct and the second air duct is greater than or equal to 8500mm 2 .

[0022] According to the above technical means, by designing the size of the front air outlet, the rear air outlet, the first air duct and the second air duct, the pressure loss of the ceiling ventilation system can be reduced as much as possible while meeting the comfort requirement of the passenger, the air volume of the whole vehicle is improved, and the cooling performance of the passenger cabin is improved.

[0023] In a second aspect, the embodiments of the present application provide a control method of the above ceiling ventilation device, which comprises: blowing air to the driver cabin through the front air outlet of the air outlet assembly; and blowing air to the passenger cabin through the rear air outlet of the air outlet assembly; wherein the front air outlet and the rear air outlet can independently control the air outlet temperature.

[0024] According to the above technical means, air is blown to the driver cabin and the passenger cabin through the front air outlet and the rear air outlet respectively, and the front air outlet and the rear air outlet are independent of each other, so that the air outlet temperature can be independently controlled, the partitioned air supply and temperature control of the driver cabin and the passenger cabin can be realized, the temperature requirement of passengers at different positions is met, and the comfort of the vehicle is improved.

[0025] Further, the front air outlet includes a first air outlet and a second air outlet; the first air outlet is located on the corresponding side of the roof above the door frame on the left side of the cockpit; the second air outlet is located on the corresponding side of the roof above the door frame on the right side of the cockpit; a first temperature sensor is arranged at the first air outlet, a second temperature sensor is arranged at the second air outlet, and a third temperature sensor is arranged at the rear air outlet; the communication air duct includes: a first air duct for communicating the air conditioning box and the first air outlet; a second air duct for communicating the air conditioning box and the second air outlet; and a third air duct for communicating the air conditioning box and the rear air outlet; the roof ventilation device further includes a circulating fan, the air inlet of the circulating fan is located in the cockpit or the passenger compartment, the air outlet of the circulating fan is communicated with the first air duct, the second air duct and the third air duct, respectively, an adjusting assembly is arranged at the air outlet of the circulating fan for adjusting the air volume entering the first air duct, the second air duct and the third air duct, and a fourth temperature sensor is arranged at the air inlet of the circulating fan; the control method further includes: the adjusting assembly adjusts the air volume entering the first air duct according to the temperature of the first temperature sensor; the adjusting assembly adjusts the air volume entering the second air duct according to the temperature of the second temperature sensor; and the adjusting assembly adjusts the air volume entering the third air duct according to the temperature of the third temperature sensor.

[0026] According to the above technical means, the temperature at the first air outlet is detected by the first temperature sensor, the temperature at the second air outlet is detected by the second temperature sensor, the temperature at the rear air outlet is detected by the third temperature sensor, and the air volume entering the first air duct, the second air duct and the third air duct is adjusted by the adjusting assembly according to the temperatures of the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the air outlet temperature of the air conditioning box, so that the temperatures of the first air outlet, the second air outlet and the rear air outlet are different, the partition temperature control of the three areas is realized, the temperature demand of passengers at different positions is met, and the comfort of the vehicle is improved.

[0027] In a third aspect, the embodiments of the present application provide a vehicle, including: an air conditioning box arranged below the center control; and the roof ventilation device.

[0028] The roof ventilation device provided by the embodiments of the present application guides the air blown by the air conditioning box in the face blowing mode to the air outlet assembly on the roof of the vehicle through the communication air duct, blows air to the cockpit of the front row of the vehicle through the front air outlet, and blows air to the passenger compartment of the rear row of the vehicle through the rear air outlet, so that the size of the air speed and the temperature are consistent with the air conditioning box below the instrument panel, and the temperature comfort of the passengers under high temperature exposure in summer can be improved; at the same time, since the air outlet assembly is moved from the instrument panel to the roof, the occupied space of the air outlet on the instrument panel can be effectively reduced, more modeling space of the instrument panel is released, and the aesthetic degree is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A top view structural schematic diagram of a roof ventilation device provided by an embodiment of the present application is shown;

[0030] Figure 2 A top view structural schematic diagram of a roof ventilation device provided by an embodiment of the present application is shown; Figure 1 A bottom view structural schematic diagram of a roof ventilation device provided by an embodiment of the present application is shown;

[0031] Figure 3 A bottom view structural schematic diagram of a roof ventilation device provided by an embodiment of the present application is shown; Figure 1 A structural schematic diagram of a front exhaust air outlet and a rear exhaust air outlet of a roof ventilation device provided by an embodiment of the present application is shown;

[0032] Figure 4 A structural schematic diagram of an A-pillar of a vehicle provided by an embodiment of the present application is shown;

[0033] Figure 5 A structural schematic diagram of an A-pillar of a vehicle provided by an embodiment of the present application is shown; Figure 4 A sectional structural schematic diagram of an A-pillar along an A-A direction of a vehicle provided by an embodiment of the present application is shown;

[0034] Figure 6 A structural schematic diagram of a second air outlet of a front exhaust air outlet provided by an embodiment of the present application is shown; Figure 3

[0035] A structural schematic diagram of a third air outlet of a rear exhaust air outlet provided by an embodiment of the present application is shown; Figure 7 Figure 3 A structural schematic diagram of a fourth air outlet of a rear exhaust air outlet provided by an embodiment of the present application is shown;

[0036] Figure 8 Figure 3 A structural schematic diagram of a fourth air outlet of a rear exhaust air outlet provided by an embodiment of the present application is shown;

[0037] Figure 9 A simulation flow field schematic diagram of a passenger compartment of a roof ventilation device provided by an embodiment of the present application is shown;

[0038] Figure 10 A breathing point cross-section temperature cloud chart of a passenger compartment of a roof ventilation device provided by an embodiment of the present application is shown.

[0039] 1, communication air duct; 11, first air duct; 12, second air duct; 13, third air duct; 131, middle air duct; 132, third left air duct; 133, third right air duct;

[0040] 2, air outlet assembly; 21, front exhaust air outlet; 211, first air outlet; 212, second air outlet; 22, rear exhaust air outlet; 221, third air outlet; 222, fourth air outlet;

[0041] 3, heating ventilation air conditioning box; 4, roof; 5, A-pillar; 6, B-pillar. DETAILED DESCRIPTION

[0042] ​​Other advantages and embodiments of the application will be more readily appreciated from the following description, taken in conjunction with the accompanying drawings, and preferred embodiments of the application. The description and drawings are not meant to limit the application to the embodiments described. Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. Various aspects and embodiments of the application can be further appreciated by reference to the following examples.

[0043] It should be noted that the drawings provided in the following embodiments are only schematic and are intended to provide the basic understanding of the application. In the drawings, the size, the shape and the relative positions of the constituent components are not necessarily to scale and are shown as more clearly to illustrate the application. The drawings in the various embodiments presented are intended to be as consistent as possible, and the proportions of the various components should be understood to be merely illustrative.

[0044] In the related art, in order to cater to the modeling aesthetic demand, reduce the area ratio of four blowing face air outlets on the instrument panel, highlight the interior modeling design element, change from the traditional multi-layer blade air outlet design to the single-layer blade air outlet design, and then to the current popular hidden air outlet design, but there is still the defect that the air outlet arrangement space interferes with the modeling design element.

[0045] As shown in Figures 1 to 3 The embodiment of the application provides a ceiling 4 ventilation device, which comprises a communication air duct 1 and an air outlet assembly 2, and the air outlet assembly 2 communicates with a heating ventilation air conditioner box 3 of a vehicle through the communication air duct 1; the air outlet assembly 2 comprises front row air outlets 21 and rear row air outlets 22 formed in the ceiling 4, the front row air outlets 21 are used for blowing air to a front row of the vehicle, the rear row air outlets 22 are used for blowing air to a passenger cabin at a rear row of the vehicle, and the front row air outlets 21 and the rear row air outlets 22 can independently control air outlet temperature.

[0046] Optionally, the communication air duct 1 and the air outlet assembly 2 are made of polypropylene (PP) composite polybutylene terephthalate (PBT) plasticizer (TD), such as PP-TD20, or a composite material of nylon and glass fiber, such as PA66-GF30, which has high structural strength, toughness and heat resistance.

[0047] The vehicle heating, ventilation and air conditioning box 3 (Heating, Ventilation, and Air Conditioning, referred to as HVAC) refers to the system or related equipment responsible for heating, ventilation and air conditioning in the vehicle. Specifically, HVAC mainly includes refrigeration devices, heating devices and human-machine interface (Human Machine Interface, referred to as HMI) and other related components, which are generally located below the vehicle instrument panel. In related technologies, the instrument panel is provided with four blowing face air outlets, i.e. front left, middle left, middle right and front right, and two left and right side defrost air outlets and two left and right front defrost air outlets. Especially, the area ratio of the four blowing face air outlets is relatively large.

[0048] The roof 4 ventilation device in the embodiment of the present application is in communication with the heating, ventilation and air conditioning box 3 below the vehicle instrument panel, and guides the air blown by the heating, ventilation and air conditioning box 3 in the blowing mode to the air outlet assembly 2 of the vehicle roof 4 through the communication air duct 1, blows air to the front passenger compartment of the vehicle through the front air outlet 21, and blows air to the passenger compartment of the rear row of the vehicle through the rear air outlet 22. The size and temperature of the wind speed are consistent with the heating, ventilation and air conditioning box 3, which can improve the temperature comfort of the passengers under high temperature exposure in summer; at the same time, since the air outlet assembly 2 is moved from the instrument panel to the roof 4, the occupied space of the air outlet in the instrument panel can be effectively reduced, more modeling space is released for the instrument panel, and the aesthetic appearance is improved.

[0049] In some embodiments, the front air outlet 21 includes a first air outlet 211 and a second air outlet 212; the first air outlet 211 is located above the door frame on the left side of the driver's cabin corresponding to the side of the roof 4; the second air outlet 212 is located above the door frame on the right side of the driver's cabin corresponding to the side of the roof 4; wherein the first air outlet 211 and the second air outlet 212 can independently control the air outlet temperature.

[0050] It can be understood that the design of the front air outlet 21 in the embodiment is not only suitable for left-hand drive vehicles, i.e. the left side of the driver's cabin is for the driver and the right side of the driver's cabin is for the co-driver, but also suitable for right-hand drive vehicles, i.e. the right side of the driver's cabin is for the driver and the left side of the driver's cabin is for the co-driver.

[0051] In related technologies, the existing air outlet is arranged on the instrument panel, which occupies a large space of the instrument panel, and most of the existing new energy vehicles use panoramic sunroofs. Under the influence of summer sunlight, the temperature at the top of the passengers will be high, and the existing air outlet arranged on the instrument panel has poor cooling effect on the top of the passengers. If the air speed is increased, the noise of the fan will increase, and if the air temperature is reduced, the other parts of the body will be uncomfortable, which greatly affects the comfort.

[0052] In the application, air is sent to the head position of the driver through the first air outlet 211, and air is sent to the head position of the copilot through the second air outlet 212, so that the blowing flow field of the front-row air outlet 21 covers the head of the front-row passenger as much as possible, other parts of the human body are not blown, the comfort of the passenger is better considered, and the temperature of the driver and the copilot can be controlled separately.

[0053] In some embodiments, the communication air duct 1 comprises: a first air duct 11 for communicating the HVAC box 3 and the first air outlet 211; a second air duct 12 for communicating the HVAC box 3 and the second air outlet 212; and a third air duct 13 for communicating the HVAC box 3 and the rear-row air outlet 22.

[0054] In the application, the HVAC box 3 communicates with the first air outlet 211 through the first air duct 11, and hot air, cold air or external fresh air of the HVAC box 3 is sent to the first air outlet 211; the HVAC box 3 communicates with the second air outlet 212 through the second air duct 12, and hot air, cold air or external fresh air of the HVAC box 3 is sent to the second air outlet 212; the HVAC box 3 communicates with the rear-row air outlet 22 through the third air duct 13, and hot air, cold air or external fresh air of the HVAC box 3 is sent to the rear-row air outlet 22, so that the first air outlet 211, the second air outlet 212 and the rear-row air outlet 22 can be controlled separately, and the air volume of the front-row air outlet 21 and the rear-row air outlet 22 is improved.

[0055] In some embodiments, a first temperature sensor is arranged at the first air outlet 211, a second temperature sensor is arranged at the second air outlet 212, and a third temperature sensor is arranged at the rear-row air outlet 22; the roof 4 ventilation device further comprises a circulating fan, the air inlet of the circulating fan is located in the driver cabin or the passenger cabin, the air outlets of the circulating fan are in communication with the first air duct 11, the second air duct 12 and the third air duct 13 respectively, an adjusting assembly is arranged at the air outlet of the circulating fan, for adjusting the air volume entering the first air duct 11, the second air duct 12 and the third air duct 13, and a fourth temperature sensor is arranged at the air inlet of the circulating fan.

[0056] In the application, the temperature at the first air outlet 211 is detected by the first temperature sensor, the temperature at the second air outlet 212 is detected by the second temperature sensor, the temperature at the rear-row air outlet 22 is detected by the third temperature sensor, and the air volume entering the first air duct 11, the second air duct 12 and the third air duct 13 is adjusted by the adjusting assembly according to the temperatures of the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the air outlet temperature of the HVAC box 3, so that the temperatures of the first air outlet 211, the second air outlet 212 and the rear-row air outlet 22 are different, the temperature of the three areas is controlled separately, the temperature demand of passengers at different positions is met, and the comfort of the vehicle is improved.

[0057] In some embodiments, the rear air outlet 22 includes a third air outlet 221 and a fourth air outlet 222, the third air outlet 221 is located on the left side of the passenger compartment above the corresponding side of the roof 4, for blowing air to the head of the left side passenger in the passenger compartment, and the fourth air outlet 222 is located on the right side of the passenger compartment above the corresponding side of the roof 4, for blowing air to the head of the right side passenger in the passenger compartment.

[0058] In this application, the third air outlet 221 blows air to the head position of the left side passenger in the rear row, and the fourth air outlet 222 blows air to the head position of the right side passenger in the rear row, so that the air blowing of the rear air outlet 22 covers the head of the rear passenger as much as possible, and better considers the comfort of the passenger.

[0059] In some embodiments, the first air duct 11 is led out from the left side of the air conditioning box 3, extends along the main driver's seat A column 5 of the vehicle, and is connected with the first air outlet 211; the second air duct 12 is led out from the right side of the air conditioning box 3, extends along the co-driver's seat A column 5 of the vehicle, and is connected with the second air outlet 212; the third air duct 13 includes a middle air duct 131 and a third left air duct 132 and a third right air duct 133 communicated with the middle air duct 131, the middle air duct 131 is led out from the central air outlet of the air conditioning box 3, extends along the bottom of the armrest box, and reaches the left and right B columns 6 respectively, the third left air duct 132 extends to the roof 4 along the left B column 6 and communicates with the third air outlet 221; the third right air duct 133 extends to the roof 4 along the right B column 6 and communicates with the fourth air outlet 222.

[0060] In this application, the first air duct 11 and the second air duct 12 are mostly arranged on the left and right A columns 5 of the vehicle, and the air blown by the air conditioning box 3 is respectively introduced to the first air outlet 211 and the second air outlet 212; one end of the middle air duct 131 of the third air duct 13 communicates with the original central air outlet of the air conditioning box 3, the middle air duct 131 communicates with the third left air duct 132 and the third right air duct 133 at the B column 6 through the bottom of the center control armrest box and the interior carpet, and communicates with the third air outlet 221 and the fourth air outlet 222 through the third left air duct 132 and the third right air duct 133 on both sides respectively, so as to deliver the hot air, cold air or external fresh air of the air conditioning box 3 to the rear air outlet 22, save space and optimize the arrangement. In addition, the corners of the first air duct 11 and the second air duct 12 are rounded, which can improve the appearance and reduce the pressure loss on the one hand.

[0061] In the related art, when the rear air outlet 22 is provided, a branch is generally selected on the air duct of the front air outlet 21 to realize air supply to the rear air outlet 22, so that the air supply amount of the rear air outlet 22 is small, which affects the comfort of the rear passengers. In the present application, the third air duct 13 is separately configured for the rear air outlet 22, so as to ensure the air volume of the rear air outlet 22, thereby ensuring the comfort of the rear passengers.

[0062] In some embodiments, the front air outlet 21 and the rear air outlet 22 respectively include a plurality of through holes, and the shape of the through holes is any one of a transverse rectangle, a longitudinal rectangle, and a longitudinal strip with an arc shape.

[0063] In the present application, the through holes of the front air outlet 21 and the rear air outlet 22 are selected according to the required shape, and by adopting a plurality of different shapes of the through holes, the diversity of air supply is ensured, and the comfort requirement of the human body is met.

[0064] In one example, the first air outlet 211 includes one small hole with a longitudinal rectangular cross section; the second air outlet 212 includes one small hole with a longitudinal strip with an arc shape; the third air outlet 221 includes one small hole with a longitudinal rectangular cross section; and the fourth air outlet 222 includes one small hole with a transverse rectangular cross section. The above is only one example, and the specific shape and quantity of the first air outlet 211, the second air outlet 212, the third air outlet 221, and the fourth air outlet 222 can also be other forms, which are not limited here.

[0065] In some embodiments, the total area of the front air outlet 21 and the rear air outlet 22 is ≥42000mm 2 ; and / or the minimum cross-sectional area of the first air duct 11 and the second air duct 12 is ≥8500mm 2 .

[0066] In the present application, by designing the size of the front air outlet 21, the rear air outlet 22, the first air duct 11, and the second air duct 12, the pressure loss of the ceiling 4 ventilation system can be reduced as much as possible while meeting the comfort demand of the passengers, the air volume of the whole vehicle is improved, and the cooling performance of the passenger cabin is improved.

[0067] In some embodiments, the first air outlet 211, the second air outlet 212, the third air outlet 221, and the fourth air outlet 222 enclose a rectangle, and the first air outlet 211, the second air outlet 212, the third air outlet 221, and the fourth air outlet 222 are respectively located at the four corners of the rectangle.

[0068] In the present application, the first air outlet 211, the second air outlet 212, the third air outlet 221 and the fourth air outlet 222 are respectively located at the four corners of the roof 4, which can not only effectively air-condition the respective areas, but also effectively improve the air flow field of the vehicle interior space, thereby improving the air volume of the whole vehicle and improving the cooling performance of the passenger compartment.

[0069] Specifically, the roof 4 of the vehicle is provided with a panoramic sunroof, and the panoramic sunroof is rectangular. The first air outlet 211, the second air outlet 212, the third air outlet 221 and the fourth air outlet 222 are respectively arranged at the four corners of the panoramic sunroof.

[0070] In the related art, the ventilation system of the roof 4 of the vehicle has relatively long pipeline, relatively small cross-sectional area of the air pipe, relatively large pipeline tortuosity and relatively large pressure loss. In order to reduce the pressure loss of the roof 4 as much as possible and improve the air volume of the whole vehicle, in the present application, the total area of the front air outlet 21 and the rear air outlet 22 is greater than or equal to 42000mm 2 , and the minimum cross-sectional area of the first air duct 11 and the second air duct 12 is greater than or equal to 8500mm 2 .

[0071] Optionally, the first air outlet 211 includes 40 small holes with longitudinal rectangular cross sections, and the total area is 10900mm 2 ; the second air outlet 212 includes 27 small holes with longitudinal arc-shaped cross sections, and the total area is 7300mm 2 ; the third air outlet 221 includes 62 small holes with longitudinal rectangular cross sections, and the total area is 16800mm 2 ; and the fourth air outlet 222 includes 60 small holes with transverse rectangular cross sections, and the total area is 7000mm 2 . By optimizing the size of the front air outlet 21, the rear air outlet 22, the first air duct 11, the second air duct 12 and the third air duct 13, the pressure loss of the roof 4 ventilation system can be reduced as much as possible while meeting the comfort requirements of the passengers, the air volume of the whole vehicle can be improved, and the cooling performance of the passenger compartment can be improved.

[0072] The present application provides a control method of the above-mentioned roof 4 ventilation device, which comprises:

[0073] S1, blowing air to the driver's cabin through the front air outlet 21 of the air outlet assembly 2;

[0074] S2, blowing air to the passenger compartment through the rear air outlet 22 of the air outlet assembly 2;

[0075] Wherein, the front air outlet 21 and the rear air outlet 22 can independently control the air outlet temperature.

[0076] In the application, air is blown to the driver's cabin and the passenger cabin through the front air outlet 21 and the rear air outlet 22 respectively, and the front air outlet 21 and the rear air outlet 22 are independent of each other and can be independently controlled to adjust the air temperature, so that the air temperature in the driver's cabin and the passenger cabin can be adjusted, and the temperature requirements of passengers in different positions can be met, and the comfort of the vehicle is improved.

[0077] In some embodiments, the front air outlet 21 includes a first air outlet 211 and a second air outlet 212; the first air outlet 211 is located on the corresponding side of the roof 4 above the door frame on the left side of the driver's cabin; the second air outlet 212 is located on the corresponding side of the roof 4 above the door frame on the right side of the driver's cabin; a first temperature sensor is arranged at the first air outlet 211, a second temperature sensor is arranged at the second air outlet 212, and a third temperature sensor is arranged at the rear air outlet 22; the communication air duct 1 includes: a first air duct 11 for connecting the air conditioning box 3 and the first air outlet 211; a second air duct 12 for connecting the air conditioning box 3 and the second air outlet 212; and a third air duct 13 for connecting the air conditioning box 3 and the rear air outlet 22; the roof 4 ventilation device further includes a circulating fan, the air inlet of the circulating fan is located in the driver's cabin or the passenger cabin, the air outlet of the circulating fan is communicated with the first air duct 11, the second air duct 12 and the third air duct 13 respectively, an adjusting assembly is arranged at the air outlet of the circulating fan for adjusting the air volume entering the first air duct 11, the second air duct 12 and the third air duct 13, and a fourth temperature sensor is arranged at the air inlet of the circulating fan; the control method further includes:

[0078] S11, the adjusting assembly adjusts the air volume entering the first air duct 11 according to the temperature of the first temperature sensor;

[0079] S12, the adjusting assembly adjusts the air volume entering the second air duct 12 according to the temperature of the second temperature sensor;

[0080] S21, the adjusting assembly adjusts the air volume entering the third air duct 13 according to the temperature of the third temperature sensor.

[0081] In the application, the temperature at the first air outlet 211 is detected by the first temperature sensor, the temperature at the second air outlet 212 is detected by the second temperature sensor, and the temperature at the rear air outlet 22 is detected by the third temperature sensor; the adjusting assembly adjusts the air volume entering the first air duct 11, the second air duct 12 and the third air duct 13 according to the temperatures of the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the air outlet temperature of the air conditioning box 3, so that the temperatures of the first air outlet 211, the second air outlet 212 and the rear air outlet 22 are different, the temperature in the three areas is controlled, the temperature requirements of passengers in different positions are met, and the comfort of the vehicle is improved.

[0082] In a specific embodiment, the temperature at the first air outlet 211, the second air outlet 212, the third air outlet 221 and the fourth air outlet 222 is defined as T1, the temperature at the circulating fan air inlet is defined as T2, and the temperature set by the user is defined as T.

[0083] In the refrigeration process:

[0084] When T = T1, i.e., the user's demand temperature is consistent with the air outlet temperature, the circulating fan is not started, and the built-in fan of the heating and air conditioning box 3 is maintained;

[0085] When T > T1, and T ≥ T2, i.e., the user's demand temperature is higher than the air outlet temperature, the circulating fan is started, and the air from the passenger compartment is mixed with the air outlet of the heating and air conditioning box 3;

[0086] When T > T1, and T < T2, i.e., the user's demand temperature is higher than the air outlet temperature, the circulating fan is started, and the air from the passenger compartment is mixed with the air outlet of the heating and air conditioning box 3;

[0087] When T < T1, and T < T2, i.e., the user's demand temperature is lower than the air outlet temperature, the air conditioning system is used to reduce the temperature to the user's air outlet temperature;

[0088] Based on the heating process:

[0089] When T1 = T1, i.e., the air outlet temperature is consistent with the air outlet temperature of the heating and air conditioning box 3, the circulating fan is not started;

[0090] When T > T1, and T ≥ T2, i.e., the user's demand temperature is higher than the air outlet temperature, the circulating fan is not started, and the air conditioning system is used to increase the temperature to the user's air outlet temperature of the ceiling 4;

[0091] When T > T1, and T < T2, i.e., the user's demand temperature is higher than the air outlet temperature, the circulating fan is started, and the air from the passenger compartment is mixed with the air outlet of the heating and air conditioning box 3, and when the mixture still cannot reach T, the air conditioning system is used to increase the temperature to the user's air outlet temperature of the ceiling 4;

[0092] When T < T1, and T < T2, i.e., the user's demand temperature is lower than the air outlet temperature, the air conditioning system is used to reduce the temperature to the user's air outlet temperature of the ceiling 4.

[0093] As Figure 9 and Figure 10As shown, from the simulation flow field diagram and the breathing point cross-section temperature cloud diagram of the passenger cabin of the roof 4 ventilation system provided by the embodiment of the present application, in the simulation analysis of the face blowing, the flow lines of the four areas of the first air outlet 211, the second air outlet 212, the third air outlet 221 and the fourth air outlet 222 of the roof 4 respectively cool the head positions of the four dummies in the front row and the rear row, and the flow lines can completely cover the head positions of the dummies, the wind speed is consistent with the wind speed of the heating and ventilation box 3, and the comfort of the passengers is improved; meanwhile, the average temperature of the breathing points of the four dummies in the front row and the rear row is 21℃-24℃, which can meet the performance index requirements.

[0094] Therefore, the roof 4 ventilation device provided by the embodiment of the present application has the same air guiding mode as the heating and ventilation box 3 of the conventional vehicle in the face blowing mode, the positions of the components of the conventional air conditioning system such as the compressor, the air blower and the heating and ventilation box 3 remain unchanged, and the following aspects are optimized: first, the first air duct 11 and the second air duct 12 are arranged on the two sides of the A column 5 and the B column 6 respectively; second, the total area of the first air outlet 211, the second air outlet 212, the third air outlet 221 and the fourth air outlet 222 of the roof 4 is ≥42000mm 2 ; third, the first air duct 11 of the A column 5 and the second air duct 12 of the B column 6 are connected; fourth, the minimum cross-sectional area of the first air duct 11 of the A column 5 and the second air duct 12 of the B column 6 is ≥8500mm 2 ; fifth, the corners of the first air duct 11 and the second air duct 12 are respectively rounded, the pressure loss is reduced by using the circular arc transition design, and finally the total pressure loss of the roof 4 ventilation system is reduced to 1450Pa, under the condition that the parameters of the conventional air blower and other equipment remain unchanged, the air supply amount can be increased to 350m 3 / h.

[0095] In addition, the embodiment of the present application provides a vehicle, which comprises the heating and ventilation box 3 arranged below the center control and the roof 4 ventilation device.

[0096] It can be understood that the vehicle in the embodiment of the present application can be all vehicles with moving ability, including vehicles with automatic driving or intelligent driving, such as passenger vehicles (sedans, buses, large buses, minibuses, etc.), cargo vehicles (ordinary trucks, van trucks, drop trailers, closed trucks, tank trucks, flatbed trucks, container trucks, self-unloading trucks, special structure trucks), special vehicles (logistics distribution vehicles, patrol vehicles, cranes, hoists, excavators, bulldozers, dumper trucks, road rollers, loaders, off-road engineering vehicles, armored engineering vehicles, sewage treatment vehicles), entertainment vehicles (entertainment vehicles, amusement park automatic driving devices, balance cars, etc.), rescue vehicles (such as fire engines, ambulances, power repair vehicles, engineering rescue vehicles, etc.) and the like.

[0097] The above embodiments are only preferred embodiments of the present application for fully illustrating the present application, and the protection scope of the present application is not limited to this. Any equivalent substitutions or transformations of the present application made by those skilled in the art based on the present application are within the protection scope of the present application.

Claims

1. A ceiling ventilation device, characterized by The roof ventilation device comprises a communication air duct (1) and an air outlet assembly (2), wherein the air outlet assembly (2) is communicated with a heating ventilation air conditioner box (3) of a vehicle through the communication air duct (1); The air outlet assembly (2) comprises a front row air outlet (21) and a rear row air outlet (22) formed in a roof (4), wherein the front row air outlet (21) is used for blowing air to a driver cabin of a front row of the vehicle, and the rear row air outlet (22) is used for blowing air to a passenger cabin of a rear row of the vehicle, and the front row air outlet (21) and the rear row air outlet (22) can independently control air outlet temperature. The front row air outlet (21) comprises a first air outlet (211) and a second air outlet (212); the first air outlet (211) is located on a corresponding side of the roof (4) above a door frame on a left side of the driver cabin; the second air outlet (212) is located on a corresponding side of the roof (4) above a door frame on a right side of the driver cabin; and the first air outlet (211) and the second air outlet (212) can independently control air outlet temperature. The communication air duct (1) comprises: a first air duct (11) for communicating the heating ventilation air conditioner box (3) and the first air outlet (211); a second air duct (12) for communicating the heating ventilation air conditioner box (3) and the second air outlet (212); and a third air duct (13) for communicating the heating ventilation air conditioner box (3) and the rear row air outlet (22); The first air outlet (211) is provided with a first temperature sensor, the second air outlet (212) is provided with a second temperature sensor, and the rear row air outlet (22) is provided with a third temperature sensor; The roof ventilation device further comprises a circulating fan, an inlet of the circulating fan is provided with a fourth temperature sensor, the inlet of the circulating fan is located in the driver cabin or the passenger cabin, outlets of the circulating fan are communicated with the first air duct (11), the second air duct (12) and the third air duct (13), respectively, and the outlets of the circulating fan are provided with an adjusting assembly; the adjusting assembly adjusts air volume entering the first air duct, the second air duct and the third air duct according to temperatures of the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor and air outlet temperature of the heating ventilation air conditioner box.

2. The ceiling ventilation device according to claim 1, characterized in that The rear row air outlet (22) comprises a third air outlet (221) and a fourth air outlet (222), wherein the third air outlet (221) is located on a corresponding side of the roof (4) above a door frame on a left side of the passenger cabin and is used for blowing air to a head of a passenger on the left side of the passenger cabin, and the fourth air outlet (222) is located on a corresponding side of the roof (4) above a door frame on a right side of the passenger cabin and is used for blowing air to a head of a passenger on the right side of the passenger cabin.

3. The ceiling ventilation device according to claim 2, characterized in that The first air duct (11) is led out from a left side face blowing air outlet of the heating ventilation air conditioner box (3), extends along a main driver position A column (5) of the vehicle, and is connected with the first air outlet (211); The second air duct (12) is led out from a right side face blowing air outlet of the heating ventilation air conditioner box (3), extends along a vice driver position A column of the vehicle, and is connected with the second air outlet (212); and The third air duct (13) is led out from a left side face blowing air outlet of the heating ventilation air conditioner box (3), extends along a main driver position A column (5) of the vehicle, and is connected with the first air outlet (211). The third air duct (13) comprises a middle air duct (131) and third left and right air ducts (132, 133) in communication with the middle air duct (131), the middle air duct (131) is led out by a central blowing face air outlet of the air conditioning box (3), extends along the bottom of the handrail box, and reaches the B pillars (6) on the left and right sides respectively, the third left air duct (132) extends to the ceiling (4) along the left side B pillar (61) and is in communication with the third air outlet (221), and the third right air duct (133) extends to the ceiling (4) along the right side B pillar (62) and is in communication with the fourth air outlet (222).

4. The ceiling ventilation device according to claim 1, characterized in that The front and rear air outlet rows (21, 22) respectively comprise a plurality of through holes, the shape of the through holes is any one of a transverse rectangle, a longitudinal rectangle and a longitudinal arc-shaped strip.

5. The ceiling ventilation device according to claim 1, wherein The total area of the front and rear air outlet rows (21, 22) is greater than or equal to 42000mm2; and / or the minimum cross-sectional area of the first and second air ducts is greater than or equal to 8500mm2.

6. A control method for a ceiling ventilation device according to any one of claims 1 to 5, characterized in that, Comprise: Blowing air to the driver's cabin through the front air outlet row (21) of the air outlet assembly (2); Blowing air to the passenger cabin through the rear air outlet row (22) of the air outlet assembly (2); Wherein, the front and rear air outlet rows (21, 22) can independently control the air outlet temperature.

7. The control method according to claim 6, characterized by The front air outlet row (21) comprises first and second air outlets (211, 212), the first air outlet (211) is located on the corresponding side of the ceiling (4) above the door frame on the left side of the driver's cabin, the second air outlet (212) is located on the corresponding side of the ceiling (4) above the door frame on the right side of the driver's cabin, a first temperature sensor is arranged at the first air outlet (211), a second temperature sensor is arranged at the second air outlet (212), and a third temperature sensor is arranged at the rear air outlet row (22); The communication air duct (1) comprises: a first air duct (11) for communicating the air conditioning box (3) and the first air outlet (211); a second air duct (12) for communicating the air conditioning box (3) and the second air outlet (212); and a third air duct (13) for communicating the air conditioning box (3) and the rear air outlet row (22); The ceiling ventilation device further comprises a circulating fan, the air inlet of the circulating fan is located in the driver's cabin or the passenger cabin, the air outlets of the circulating fan are in communication with the first, second and third air ducts (11, 12, 13) respectively, an adjusting assembly is arranged at the air outlet of the circulating fan, for adjusting the air volume entering the first, second and third air ducts (11, 12, 13), and a fourth temperature sensor is arranged at the air inlet of the circulating fan; The control method further comprises: The adjusting assembly adjusts the air volume entering the first air duct (11) according to the temperature of the first temperature sensor; The adjusting assembly adjusts the air volume entering the second air duct (12) according to the temperature of the second temperature sensor; The adjusting assembly adjusts the air volume entering the third air duct (13) according to the temperature of the third temperature sensor. The adjusting assembly adjusts the air volume entering the third air duct (13) according to the temperature of the third temperature sensor.

8. A vehicle characterized by comprising: Comprise: A heating, ventilation and air conditioning box (3) is arranged below the center control; And The ceiling ventilation device according to any one of claims 1-5.

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