Wind direction changing and guiding device, double-channel flow wind scooper and flow guiding and cooling method

Abstract

The invention relates to the technical field of vehicle cooling systems, in particular to a wind direction changing and guiding device, a double-channel flow wind scooper and a guiding and cooling method. The flow guide device comprises a flow guide mechanism, the flow guide mechanism is arranged in the air outlet direction, and the flow guide mechanism comprises a plurality of flow guide blades which are of an open structure in the air outlet direction; the driving mechanism is in transmission connection with the flow guide mechanism and is used for driving the flow guide mechanism to move in the air outlet direction, so that air is diffused through the flow guide blades to adjust and change the air direction; the motion comprises a fixed state and a reciprocating motion state in the air outlet direction. According to the flow guide cooling method, the flow guide device is used, the motion state of the flow guide mechanism is comprehensively regulated according to the vehicle speed and the engine temperature, the flow field is regulated and changed, and the cooling effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle cooling systems, and in particular to a wind direction changing air guide device, a dual-channel air guide cover and an air guide and cooling method. Background Art

[0002] During the driving process, the engine generates a lot of heat, which causes the engine temperature to rise. The increase in engine temperature not only harms the components, but also reduces the vehicle's handling performance. With the changes in vehicle styling and the addition of components, the reserved heat dissipation space is getting smaller and smaller. The conventional diversion cooling method is to add a cooling fan to the cabin to cool the cabin. The conventional cooling fan produces a fixed cooling flow field, which can easily lead to untimely heat dissipation of local heat in the cabin. The cooling effect needs to be improved, and it is impossible to adapt to and change the cooling flow field under different driving conditions. Summary of the invention

[0003] The main purpose of the present invention is to solve the problem that conventional cooling fans cannot adjust and change the cooling flow field, which easily leads to untimely heat dissipation of local heat in the cabin, and to provide a wind direction changing guide device to improve the cooling effect by changing the cooling flow field.

[0004] The technical solution adopted by the present invention is: a wind direction changing and guiding device, comprising:

[0005] A flow guiding mechanism, wherein the flow guiding mechanism is arranged in the air outlet direction and comprises a plurality of flow guiding blades which are open in the air outlet direction;

[0006] The driving mechanism is connected to the guide mechanism in a transmission manner and is used to drive the guide mechanism to move in the wind outlet direction so that the wind is diffused through the guide blades to adjust and change the wind direction; the movement includes a fixed state and a reciprocating state in the wind outlet direction.

[0007] Furthermore, the guide surface formed by the multiple guide blades does not completely cover the wind domain cross-section; the multiple guide blades are spaced from inside to outside in the wind domain cross-section to form a guide gap; the guide blades have an inwardly curved arc structure so that the guide gap is an open arc shape.

[0008] Furthermore, the guide mechanism further comprises a first connecting plate and a second connecting plate which are arranged at intervals; a plurality of the guide blades are fixedly connected to the first connecting plate and the second connecting plate at intervals from the inside to the outside to form a mesh structure.

[0009] Furthermore, a transmission rack is provided on the first connecting plate; the driving mechanism includes a driving gear; the driving mechanism drives the air guide mechanism to reciprocate in the wind direction by engaging the driving gear with the transmission rack.

[0010] Furthermore, it also includes a mounting base, and the mounting base and the air guide mechanism are cooperated to be provided with a guide structure for slidingly mounting the air guide mechanism in the air outlet direction; the driving mechanism is fixed on the mounting base.

[0011] Furthermore, the guide structure includes a plurality of guide rails arranged on the mounting base along the air outlet direction and guide sliders corresponding to the guide rails arranged on the first connecting plate and / or the second connecting plate; a slide groove is provided on the guide rail, and the guide slider is slidably arranged in the slide groove to abut against the opposite side walls of the slide groove.

[0012] Furthermore, the plurality of guide rails correspondingly abut against the back side or the facing side of the first connecting plate and the second connecting plate to limit the flow guide mechanism in the direction perpendicular to the slide groove.

[0013] Furthermore, the mounting base includes a plurality of mounting brackets, on which the guide rails are arranged; the back sides of the first connecting plate and the second connecting plate are respectively slidably abutted against the guide rails and are provided with the guide sliding blocks.

[0014] Furthermore, the end of the slide groove away from the mounting base is open for placing the guide slider; the end of the guide rail away from the mounting base is provided with a limiting mechanism for preventing the guide slider from slipping out of the guide rail.

[0015] Furthermore, the limiting structure includes a protrusion provided on the guide rail and located in the slide groove, which is used to limit the sliding movement of the guide slider in the slide groove; the protrusion is located in the slide groove so that the opening of the slide groove is an open structure.

[0016] Furthermore, it also includes a controller and an information collector for collecting control information; the controller is used to control the driving mechanism to drive the guide vane to move in the air outlet direction according to the control information; the control information includes the engine temperature T.

[0017] Furthermore, the control information includes vehicle speed V and engine temperature T; the controller controls the driving mechanism to drive the air guide mechanism to reciprocate when the vehicle speed V is greater than a first vehicle speed threshold V1 and the engine temperature T is greater than a first temperature threshold T1; the controller drives the air guide mechanism to reciprocate in the air outlet direction when the vehicle speed V is not less than the first vehicle speed threshold V1 and not more than the second vehicle speed threshold V2 and the engine temperature T is greater than the second temperature threshold T2; the second temperature threshold T2 is greater than the first temperature threshold T1.

[0018] Another aspect of the present invention provides a dual-channel flow air guide hood, including a hood body provided with a DC ventilation area and a variable flow ventilation area; the variable flow ventilation area is arranged in a manner of central angle proportion, and the variable flow ventilation area includes the wind direction changing guide device described in the present invention.

[0019] In another aspect of the present invention, a method for cooling down a vehicle engine compartment is provided, using any one of the wind direction changing flow guiding devices provided by the present invention, and the method for cooling down a vehicle engine compartment comprises:

[0020] Collecting control information; the control information includes vehicle speed V and engine temperature T;

[0021] When the vehicle speed V is greater than a first vehicle speed threshold V1 and the engine temperature T is greater than a first temperature threshold T1, the air guide mechanism is driven to reciprocate in the air outlet direction;

[0022] When the vehicle speed V is not less than the first vehicle speed threshold V1 and not more than the second vehicle speed threshold V2, and the engine temperature T is greater than the second temperature threshold T2, the air guide mechanism is driven to reciprocate in the air outlet direction; the second temperature threshold T2 is greater than the first temperature threshold T1;

[0023] When the vehicle speed V exceeds the second vehicle speed threshold V2, the flow guiding mechanism is controlled to be in a fixed state;

[0024] The first vehicle speed threshold V1 ranges from 50 to 70 km / h; the second vehicle speed threshold V2 ranges from 110 to 130 km / h; the first temperature threshold T1 ranges from 80 to 95°C; the second temperature threshold T2 ranges from 96 to 110°C.

[0025] According to the present invention, a method for diverting and cooling an engine compartment of a vehicle is provided, wherein driving the diverting mechanism to reciprocate in the air outlet direction comprises: after driving the diverting mechanism to reciprocate in the air outlet direction for a set time, executing a step of collecting control information.

[0026] According to the present invention, a diversion and cooling method for a vehicle engine compartment is provided, wherein the first vehicle speed threshold V1 is 60 km / h, the second vehicle speed threshold V2 is 120 km / h; the first temperature threshold T1 is 90°C; and the second temperature threshold T2 is 100°C.

[0027] The beneficial effects of the present invention include: 1. The guide mechanism of the present invention includes a guide blade, and the guide blade is an open structure in the air outlet direction, so that the airflow is guided by the guide blade and flows out along the direction of the guide blade, changing the flow field generated by the air outlet member (such as the cooling fan of the background technology), and coordinating the reciprocating motion of the guide mechanism in the air outlet direction with the driving mechanism to adjust the flow field, so that the airflow can be dispersed to different degrees in one reciprocating cycle, so that the airflow is swept from the middle to the edge of the cabin, which is conducive to taking away heat and has a higher cooling effect;

[0028] 2. The guide blades of the present invention are arranged from inside to outside to form a guide gap, so that the airflow can flow out from the guide gap and blow toward the engine in the cabin, which can reduce the obstruction to the airflow and facilitate the airflow to be diffused to different degrees; the guide blades are in an arc shape, which is conducive to the diffusion of the airflow in different directions, making the diffused airflow more uniform and the wind threshold after diffusion covering a larger area;

[0029] 3. The plurality of guide blades of the present invention are fixedly connected together by the first connecting plate and the second connecting plate to form a mesh structure, which occupies a small area and has a small wind resistance, and is conducive to the airflow flowing to the cabin after passing through the guide mechanism;

[0030] 4. The driving mechanism of the present invention is very simple in its transmission connection with the air guide mechanism. A transmission rack is provided on the first connecting plate, and the driving gear of the driving mechanism meshes with the transmission rack. The forward and reverse rotation of the driving gear can drive the air guide mechanism to reciprocate in the air outlet direction.

[0031] 5. The present invention also includes a mounting base, through which the driving mechanism and the slidably connected flow guide mechanism can be fixedly mounted, so as to facilitate the fixing of the flow guide device on the air outlet member;

[0032] 6. The guiding structure of the present invention is simple. A plurality of guiding sliders arranged on the air guide mechanism are slidably arranged in the slide groove of the guiding slide rail, so as to realize the sliding connection of the air guide mechanism on the mounting base; the guiding sliders abut against the opposite side walls of the slide groove, and can perform a guiding and limiting function, so that the air guide mechanism slides in the air outlet direction;

[0033] 7. The guide rail of the present invention abuts against the opposite sides or the opposite sides of the first connecting plate and the second connecting plate, and can limit the air guide mechanism in the direction perpendicular to the slide groove to prevent the air guide mechanism from moving in the direction perpendicular to the slide groove; the guide mechanism can only slide in the air outlet direction in the three-dimensional space in cooperation with the slide groove;

[0034] 8. The present invention can collect control information including engine temperature T through the information collector, and can control the rotation of the driving mechanism according to the control information through the controller to control the reciprocating motion of the guide mechanism, so as to adjust the cooling flow field according to different driving conditions and improve the cooling effect;

[0035] 9. The control information of the present invention includes the engine temperature T and the vehicle speed V. The reciprocating motion of the air guide mechanism in the air outlet direction is comprehensively controlled by the vehicle speed V and the engine temperature T and the set temperature threshold and the vehicle speed V threshold, so that the present invention has a greater cooling effect;

[0036] 10. The vehicle engine compartment diversion and cooling method provided by the present invention fully utilizes the structural characteristics of the wind direction changing diversion device of the present invention, and selects different control modes according to the vehicle speed V and the engine temperature T to adjust the movement of the guide blades to promote cooling.

[0037] The wind direction changing and air guide device of the present invention can be used to be installed on a cooling fan. The guide blades are open in the air outlet direction, which can change the flow field. The driving mechanism is cooperated to adjust the reciprocating motion of the guide mechanism in the air outlet direction, and the flow field can be adjusted. The airflow can be dispersed to different degrees within a reciprocating cycle, thereby having a higher cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 : A schematic diagram of the front view of the wind direction changing guide device of the present invention;

[0039] Figure 2 : A schematic diagram of the three-dimensional structure of the wind direction changing and guide device of the present invention;

[0040] Figure 3 : Schematic diagram of the structure of the flow guiding mechanism connected to the driving device;

[0041] Figure 4 : Structural diagram of the flow guide mechanism connected to the mounting base frame;

[0042] Figure 5 : A schematic diagram of the structure in which the wind direction changing and air guiding device of the present invention is installed in a cooling fan;

[0043] Figure 6 : The dual-channel flow air guide cover of the present invention;

[0044] Figure 7 : Flow chart of the diversion and cooling method of the wind direction changing diversion device;

[0045] Among them: 1—guide mechanism; 11—guide blade; 12—first connecting plate; 13—second connecting plate; 14—transmission rack; 15—guide slider; 16—guide gap; 2—driving mechanism; 21—driving gear; 3—mounting base; 30—mounting bracket; 31—guide rail; 311—slide groove; 312—protrusion; 4—cover body; 41—DC ventilation area; 42—variable flow ventilation area. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] Existing vehicle cabin heat dissipation mainly uses cooling air. The wind blown by the cooling fan forms a fixed cooling flow field in the cabin, which can easily lead to untimely heat dissipation of local heat in the cabin. The cooling effect needs to be improved, and it is impossible to adapt to and change the cooling flow field under different driving conditions.

[0051] The wind direction changing guide device of the present invention can be used to be installed on a cooling fan of a vehicle. The guide blades 11 of the guide device are open in the air outlet direction, so that the air flow is guided by the guide blades 11 and flows out along the direction of the guide blades 11, thereby changing the flow field generated by the air outlet member (for example, the cooling fan of the background technology). The drive mechanism 2 is cooperated to adjust the reciprocating motion of the guide mechanism 1 in the air outlet direction, and the flow field can be adjusted. Within one reciprocating cycle, the air flow can be dispersed to different degrees, so that the air flow can sweep from the middle to the edge of the cabin, which is conducive to taking away heat and has a higher cooling effect.

[0052] A wind direction changing and guiding device, specifically, Figures 1 to 5As shown, it includes a guide mechanism 1 and a driving mechanism 2. The guide mechanism 1 is arranged in the wind outlet direction. The wind outlet direction refers to the direction in which the wind is blown out without being changed by the guide device. The guide mechanism 1 includes a plurality of guide blades 11 with an open structure in the wind outlet direction; the driving mechanism 2 is connected to the guide mechanism 1 in a transmission manner, and is used to drive the movement of the guide mechanism 1 in the wind outlet direction, so that the wind diffuses through the guide blades 11 to adjust and change the wind direction; the movement includes a fixed state and a reciprocating state in the wind outlet direction. The guide mechanism 1 has two working states, one is a fixed state, and the other is a reciprocating state in the wind outlet direction; the fixed state refers to that the driving mechanism 2 drives the guide mechanism 1 to be fixed or fixed after moving in the wind outlet direction, and the original fixed flow field can be changed to a new fixed flow field; the reciprocating state refers to that the driving mechanism 2 drives the guide mechanism 1 to reciprocate in the wind outlet direction, and gradually adjusts the flow field within half a movement cycle (one-way path). Compared with the fixed flow field, the adjustable flow field formed by the reciprocating motion is larger in area and has a better cooling effect.

[0053] When the guide mechanism moves to the maximum stroke against the wind in the air outlet direction (closest to the air outlet piece), the diffusion effect on the air flow is the greatest, and the cross-sectional area of ​​the wind domain after diffusion is larger, which is suitable for blowing away the heat accumulated at the edge, and the wind speed decreases faster when blowing to the heat source; when the guide mechanism moves to the maximum stroke with the wind in the air outlet direction (farthest from the air outlet piece), the diffusion effect on the air flow is the smallest, and the wind speed after being guided by the guide mechanism is faster than the former, which is suitable for quickly taking away the heat at the heat source; the reciprocating motion of the guide mechanism ensures the cooling effect on the heat source, and can also take away the heat accumulated at the edge, and the overall cooling effect is better.

[0054] With the changes in vehicle shape and the addition of components, the reserved heat dissipation space is getting smaller and smaller. The deflector device can be installed on the cooling fan of the vehicle, which is suitable for changing the flow field in a narrow heat dissipation space. The deflector mechanism 1 of the deflector device can be set on the air outlet member or the air outlet direction of the air outlet member, for example, on the cooling fan, or on the air outlet duct, or set at a distance between the air outlet and the air outlet member. The setting position of the deflector device can be adjusted according to different scenes.

[0055] In one embodiment, if Figure 1As shown, the guide surface domain formed by the multiple guide blades 11 does not completely cover the wind domain cross-section; the guide surface domain refers to an overall surface domain formed by the outer edges of the multiple guide blades 11, and can also be understood as a surface domain surrounded by the outer edges of the guide mechanism 1; it can cover 20-60% of the wind domain cross-section, preferably about 25%; preferably, the guide mechanism 1 partially covers the wind threshold cross-section in the form of a central angle ratio, so that a part of the airflow is blown toward the cabin along the outlet direction; multiple guide blades 11 are arranged from the inside to the outside in the wind domain cross-section to form a guide gap 16; the guide blades 11 are inwardly curved arc-shaped structures so that the guide gap 16 is an open arc-shaped structure. Through the guide gap 16, the airflow can flow out from the guide gap 16 and blow toward the engine in the cabin, which can reduce the obstruction to the airflow and facilitate the diffusion of the airflow to different degrees; the guide blade 11 is in an arc shape, which is conducive to the diffusion of the airflow in different directions, making the diffused airflow more uniform, and the wind threshold after diffusion covers a larger area, avoiding the adverse effects such as the diffusion of the airflow to other parts and causing heat accumulation in other parts. The guide surface area does not fully cover the wind area cross section, which can avoid the airflow in the outlet direction being completely redirected, resulting in a general cooling effect in the cabin part corresponding to the outlet direction.

[0056] On the basis of multiple guide blades 11 being arranged from inside to outside at intervals, as Figures 1-2 As shown, the guide mechanism 1 also includes a first connecting plate 12 and a second connecting plate 13 arranged at intervals; a plurality of guide blades 11 are fixedly connected to the first connecting plate 12 and the second connecting plate 13 from the inside to the outside in a mesh structure. In actual use, the first connecting plate 12 and the second connecting plate 13 are located at both ends of the guide blade 11 to fix the plurality of guide blades 11. The plurality of guide blades 11 can be fixedly connected by the plate-shaped first connecting plate 12 and the second connecting plate 13, while reducing the size of the occupied flow field space, and having a small wind resistance, which is conducive to the airflow being diverted by the guide blade 11 and then flowing to the cabin.

[0057] On the basis that the flow guiding mechanism 1 further includes a first connecting plate 12 and a second connecting plate 13 arranged at intervals, as shown in FIG. Figures 2-3 As shown, a transmission rack 14 is provided on the first connecting plate 12; the driving mechanism 2 includes a driving gear 21; the driving mechanism 2 drives the air guide mechanism 1 to reciprocate in the wind direction by engaging the driving gear 21 with the transmission rack 14; the driving mechanism 2 is preferably a motor, which is convenient for regulating the positive and negative rotation of the driving gear 21. Preferably, the transmission rack 14 is provided in the middle of the first connecting plate 12, and the driving mechanism 2 drives the first connecting plate 12 to reciprocate in the wind outlet direction in the middle, which has better stability and avoids the deflection of the air guide mechanism 1 when the transmission rack 14 provided at the edge of the first connecting plate 12 is driven.

[0058] In one embodiment, if Figure 3 and 5As shown, the wind direction changing guide device also includes a mounting base 3, and the mounting base 3 and the guide mechanism 1 are provided with a guide structure, which is used to slide the guide mechanism 1 in the air outlet direction, and also has a guiding function during sliding; the driving mechanism 2 is fixed on the mounting base 3 and is transmission-connected to the guide mechanism 1. The driving mechanism 2 and the slide-mounted guide mechanism 1 can be installed through the mounting base 3, so that they are connected as a whole, which is convenient for being fixed to the air outlet member (cooling fan).

[0059] Based on the installation base frame 3 and the guide mechanism 1, a guide structure is provided, such as Figures 3-4 As shown, the guide structure includes a plurality of guide rails 31 and guide sliders 15. The guide rails 31 are arranged on the mounting base 3 along the air outlet direction. The plurality of guide sliders 15 are arranged on the first connecting plate 12 and / or the second connecting plate 13 corresponding to the guide rails 31. A slide groove 311 is provided on the guide rail 31. The guide slider 15 is slidably arranged in the slide groove 311 and abuts against the opposite side walls of the slide groove 311. The guide structure of the present invention is simple. The guide slider 15 abuts against the opposite side walls of the slide groove 311 and can perform a guiding and limiting function, so that the air guide mechanism 1 slides in the air outlet direction and the guide slider 15 is limited in the direction perpendicular to the inner wall of the slide groove 311.

[0060] Based on the guide structure including a plurality of guide rails 31 and guide sliders 15, as shown in FIG. Figure 2 and 5 As shown, the mounting base 3 includes a plurality of mounting brackets 30, and a guide rail 31 is provided on the mounting bracket 30; the back sides of the first connecting plate 12 and the second connecting plate 13 respectively slide against the guide rail 31 and are provided with a guide slider 15, which can limit the position of the air guide mechanism 1 in the direction of the vertical slide groove 311, that is, the air guide mechanism 1 is clamped between the first connecting plate 12 and the second connecting plate 13 to prevent the air guide mechanism 1 from moving in the direction of the vertical slide groove 311; the slide groove 311 is used to enable the air guide mechanism 1 to slide only in the air outlet direction in the three-dimensional space.

[0061] Based on the guide structure including a plurality of guide rails 31 and guide sliders 15, as shown in FIG. Figure 4 As shown, the end of the slide groove 311 away from the mounting base 3 is open for placing the guide slider 15; the end of the guide rail 31 away from the mounting base 3 is provided with a limiting mechanism for preventing the guide slider 15 from slipping out of the guide rail 31.

[0062] A limiting mechanism is provided at one end of the guide rail 31 away from the mounting base 3. Figure 4As shown, the limiting structure includes a protrusion 312 disposed on the guide rail 31 and located in the slide groove 311, which is used to limit the sliding position of the guide slider 15 in the slide groove 311; the protrusion 312 is located in the slide groove 311 so that the opening of the slide groove 311 is an open structure, which is convenient for the guide slider 15 to be inserted into the slide groove 311. Preferably, the guide slider 15 is cylindrical, and the guide rail 31 is provided with protrusions 312 on both sides of the side wall of the slide groove 311, and the distance between the end points of the two protrusions 312 is smaller than the outer diameter of the guide slider 15.

[0063] In certain embodiments, the wind direction changing guide device is applied to a vehicle to guide and cool the cabin. The guide device also includes a controller and an information collector for collecting control information. The controller is used to control the drive mechanism 2 to drive the guide blade 11 to move in the air outlet direction according to the control information, including a reciprocating motion state and a fixed state in the air outlet direction of the cooling fan; the control information includes the engine temperature T, and the drive mechanism 2 is controlled by the relationship between the engine temperature T and a preset temperature threshold (including a first temperature threshold T1 and a second temperature threshold T2) to adjust the movement state of the guide mechanism 1.

[0064] Based on the fact that the flow guiding device also includes a controller and an information collector, the control information includes the vehicle speed V and the engine temperature T. The speed sensor and the temperature sensor can be used as the information collector to collect the vehicle speed V and the engine temperature T. The driving mechanism 2 is comprehensively controlled to control the motion state of the flow guiding mechanism 1 through the relationship between the vehicle speed V and the preset vehicle speed V threshold and the relationship between the engine temperature T and the preset temperature threshold. Specifically, Figure 6 As shown, the controller controls the driving mechanism 2 to drive the air guide mechanism 1 to reciprocate when the vehicle speed V is greater than the first vehicle speed threshold V1 and the engine temperature T is greater than the first temperature threshold T1; the controller drives the air guide mechanism 1 to reciprocate in the air outlet direction when the vehicle speed V is not less than the first vehicle speed threshold V1 and not more than the second vehicle speed threshold V2 and the engine temperature T is greater than the second temperature threshold T2; the second temperature threshold T2 is greater than the first temperature threshold T1. Due to the different vehicle speeds V, during driving, the natural airflow enters from the air intake grille at the front of the vehicle, which has a certain cooling effect on the cabin. When the vehicle speed V is not high, the cooling fan is required to generate airflow to cool the cabin. With the wind direction changing air guide device, the fixed flow field of the airflow generated by the cooling fan can be adjusted to improve the cooling effect; when the vehicle speed V is large, the natural airflow velocity is fast, and the auxiliary effect of adjusting the reciprocating motion of the air guide mechanism 1 on cooling is small, and the air guide mechanism 1 can be adjusted to a fixed state to save energy for the vehicle; the vehicle speed V and the engine temperature T are used as control information to comprehensively control the motion state of the guide blade 11 to maximize the beneficial effect of the air guide device.

[0065] In actual use, the driving gear 21 of the driving mechanism 2 meshes with the transmission rack 14 of the guide mechanism 1, so that the guide mechanism 1 can be fixed in a fixed state. When the guide mechanism 1 needs to be adjusted to a reciprocating state, the driving gear 21 of the motor rotates regularly in both positive and negative intervals to drive the guide mechanism 1 to reciprocate in the air outlet direction. During movement, the guide sliders 15 of the first connecting plate 12 and the second connecting plate 13 slide in the slide grooves 311 of the guide rails 31 to provide a guiding effect. The guide rails 31 located on both sides of the guide mechanism 1 abut against the first connecting plate 12 and the second connecting plate 13 to clamp the guide mechanism 1 between the two mounting brackets 30 and slide along the air outlet direction. Within half a movement cycle (one-way path), the flow field is gradually adjusted. Compared with a fixed flow field, the adjustable flow field formed by the reciprocating motion has a larger area, which can avoid local accumulation of heat in the cabin and has a better cooling effect.

[0066] Another aspect of the present invention further provides a dual-channel flow guide cover, such as Figures 5-6 As shown, it includes a cover body provided with a DC ventilation area and a variable flow ventilation area; the variable flow ventilation area is arranged in a manner of proportion of the central angle of a circle, and the variable flow ventilation area includes any of the above-mentioned wind direction changing flow guide devices, that is, the variable flow ventilation area is subjected to a flow changing effect by the wind direction changing flow guide device, and the flow guide device is fixed on the cover body. The dual-channel flow air guide cover can be installed on the cooling fan, and the DC and variable flow combined cooling can be performed on the heat source or the area to be cooled according to different usage scenarios. For example, the dual-channel flow air guide cover is installed on the cooling fan and placed in front of the car engine, or in front of the battery pack for DC and variable flow combined cooling, which is not limited to use on the vehicle to cool the engine.

[0067] In another aspect of the present invention, a method for cooling the engine compartment of a vehicle is provided, using any wind direction changing flow guide device provided by the present invention, such as Figure 7 As shown, the diversion cooling method includes:

[0068] S1. Collecting control information; the control information includes vehicle speed V and engine temperature T;

[0069] S2. According to the relationship between the vehicle speed V and the engine temperature T corresponding to the preset vehicle speed V threshold and the preset temperature threshold, the movement state of the guide mechanism 1 is regulated; the movement state includes a fixed state and a reciprocating motion state in the air outlet direction; the preset vehicle speed V threshold includes a first vehicle speed threshold V1 and a second vehicle speed threshold V2; the preset temperature threshold includes a first temperature threshold T1 and a second temperature threshold T2.

[0070] The present invention provides a method for cooling down a vehicle engine compartment by diverting air. In step S2, the motion state of the diverting mechanism 1 is regulated according to the relationship between the vehicle speed V and the engine temperature T corresponding to the preset vehicle speed V threshold and the preset temperature threshold, including:

[0071] S21 . When the vehicle speed V is greater than a first vehicle speed threshold V1 and the engine temperature T is greater than a first temperature threshold T1 , the air guide mechanism 1 is driven to reciprocate in the air outlet direction.

[0072] Preferably, step S2 further includes:

[0073] S22. When the vehicle speed V is not less than the first vehicle speed threshold V1 and not more than the second vehicle speed threshold V2 and the engine temperature T is greater than the second temperature threshold T2, the air guide mechanism 1 is driven to reciprocate in the air outlet direction; the second temperature threshold T2 is greater than the first temperature threshold T1.

[0074] Preferably, step S2 further includes, S23, when the vehicle speed V exceeds a second vehicle speed threshold V2, controlling the air guide mechanism 1 to be in a fixed state.

[0075] Preferably, the first vehicle speed threshold V1 ranges from 50 to 70 km / h; the second vehicle speed threshold V2 ranges from 110 to 130 km / h; the first temperature threshold T1 ranges from 80 to 95°C; and the second temperature threshold T2 ranges from 96 to 110°C.

[0076] According to the present invention, a diversion and cooling method for a vehicle engine compartment is provided, wherein the first vehicle speed threshold value V1 is 60 km / h, the second vehicle speed threshold value V2 is 120 km / h; the first temperature threshold value T1 is 90°C; and the second temperature threshold value T2 is 100°C. When the vehicle speed V is lower than 60 km / h, the natural airflow is relatively small, and the movement state of the diversion mechanism 1 is mainly regulated by temperature, and the reciprocating motion of the diversion mechanism 1 has an obvious effect; when the vehicle speed V is greater than or equal to 60 km / h and less than or equal to 120 km / h, the flow rate of the natural airflow is relatively fast, and the effect of the diversion mechanism 1 is more obvious when the engine temperature T is greater than 100°C; when the vehicle speed V is greater than 120 km / h, the flow rate of the natural airflow is relatively fast, and the cooling effect of the reciprocating motion of the diversion mechanism 1 is not obvious at this time, and it can be adjusted to a fixed state to save energy.

[0077] According to the present invention, a method for guiding and cooling an engine compartment of a vehicle is provided, which further comprises:

[0078] S3, after adjusting the motion state of the air guide mechanism 1 to the reciprocating motion state, execute step S1 after the set time, that is, after driving the air guide mechanism 1 to reciprocate in the air outlet direction for the set time, execute the step of collecting and controlling information. The set time is set according to the vehicle driving conditions, which can be 1 to 20 minutes, preferably 10 minutes. Set the maintenance time of the reciprocating motion state. After the set time, when the vehicle speed V and the engine temperature T have dropped to the corresponding preset speed threshold and preset temperature threshold range, that is, the reciprocating motion state is not satisfied, there is no need to continue to drive the air guide mechanism 1 to reciprocate, which can save energy.

[0079] In actual use, after the air guide mechanism 1 and the driving device are installed on the mounting base 3, the mounting base 3 is fixed to the cooling fan. During the driving process of the vehicle, the vehicle speed V and the engine temperature T are collected through the information collector. When the vehicle speed V is less than the first vehicle speed threshold V160km / h, if the engine temperature T is less than the first temperature threshold T190℃, the air guide mechanism 1 is adjusted to a fixed state, and there is no need to adjust the flow field to assist in cooling; when the vehicle speed V is less than the first vehicle speed threshold V160km / h, if the engine temperature T is greater than the first temperature threshold T190℃, the air guide mechanism 1 is adjusted to a fixed state. Reciprocating motion state; when the first vehicle speed threshold V160km / h≤vehicle speed V≤the second vehicle speed threshold V2120km / h, if the engine temperature T≤the second temperature threshold T2100℃, the guide mechanism 1 is adjusted to a fixed state; if the engine temperature T>the second temperature threshold T2100℃, the guide mechanism 1 is adjusted to a reciprocating motion state; when the vehicle speed V>the second vehicle speed threshold V2120km / h, the vehicle speed V is relatively high, and the flow rate of the natural airflow is relatively large, and the guide mechanism 1 is adjusted to a fixed state, and there is no need to enable the reciprocating motion of the guide mechanism 1 to adjust the flow field for cooling.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wind direction changing and guide device, characterized in that: include, A flow guide mechanism (1), the flow guide mechanism (1) being arranged in the air outlet direction, the flow guide mechanism (1) comprising a plurality of flow guide blades (11) having an open structure in the air outlet direction; A driving mechanism (2) is connected to the guide mechanism (1) in a transmission manner and is used to drive the guide mechanism (1) to move in the wind outlet direction, so that the wind is diffused through the guide blades (11) to adjust and change the wind direction; the movement includes a fixed state and a reciprocating state in the wind outlet direction.

2. A wind direction changing flow guide device as claimed in claim 1, characterized in that: The guide surface area formed by the plurality of guide blades (11) does not completely cover the wind domain cross section; the plurality of guide blades (11) are arranged in a spaced manner from the inside to the outside in the wind domain cross section to form a guide gap (16); the guide blades (11) are in an inwardly curved arc-shaped structure so that the guide gap (16) is in an open arc-shaped structure.

3. A wind direction changing flow guide device as claimed in claim 2, characterized in that: The flow guide mechanism (1) further comprises a first connecting plate (12) and a second connecting plate (13) which are arranged at intervals; a plurality of the flow guide blades (11) are fixedly connected to the first connecting plate (12) and the second connecting plate (13) at intervals from the inside to the outside to form a mesh structure.

4. A wind direction changing flow guide device as claimed in claim 3, characterized in that: The first connecting plate (12) is provided with a transmission rack (14); the driving mechanism (2) comprises a driving gear (21); the driving mechanism (2) drives the air guide mechanism (1) to reciprocate in the wind direction by engaging the driving gear (21) with the transmission rack (14).

5. The wind direction changing flow guide device according to claim 3, characterized in that: It also comprises a mounting base (3), wherein the mounting base (3) cooperates with the air guide mechanism (1) to be provided with a guide structure for slidingly mounting the air guide mechanism (1) in the air outlet direction; the driving mechanism (2) is fixedly mounted on the mounting base (3).

6. A wind direction changing flow guide device as claimed in claim 5, characterized in that: The guide structure comprises a plurality of guide rails (31) arranged on the mounting base (3) along the air outlet direction and guide sliders (15) arranged on the first connecting plate (12) and / or the second connecting plate (13) corresponding to the guide rails (31); a slide groove (311) is provided on the guide rail (31), and the guide slider (15) is slidably arranged in the slide groove (311) and abuts against opposite side walls of the slide groove (311).

7. A wind direction changing flow guide device as claimed in claim 6, characterized in that: The plurality of guide rails (31) correspondingly abut against the back side or the opposite side of the first connecting plate (12) and the second connecting plate (13) to limit the position of the flow guide mechanism (1) in the direction of the vertical slide groove (311).

8. A wind direction changing and guide device as claimed in any one of claims 1 to 7, characterized in that: It also includes a controller and an information collector for collecting control information; The controller is used to control the drive mechanism (2) to drive the guide vane (11) to move in the air outlet direction according to the control information; the control information includes a vehicle speed V and an engine temperature T; the controller controls the drive mechanism (2) to drive the guide mechanism (1) to reciprocate when the vehicle speed V is greater than a first vehicle speed threshold V1 and the engine temperature T is greater than a first temperature threshold T1; the controller drives the guide mechanism (1) to reciprocate in the air outlet direction when the vehicle speed V is not less than the first vehicle speed threshold V1 and not greater than a second vehicle speed threshold V2 and the engine temperature T is greater than a second temperature threshold T2; the second temperature threshold T2 is greater than the first temperature threshold T1.

9. A dual-channel air guide cover, characterized in that: The invention comprises a cover body (4) provided with a direct current ventilation area (41) and a variable flow ventilation area (42); the variable flow ventilation area (42) is arranged in a manner of central angle proportion, and the variable flow ventilation area (42) comprises a wind direction changing guide device as claimed in any one of claims 1 to 7.

10. A method for cooling down a vehicle engine compartment by diverting air, characterized in that: Using the wind direction changing guide device as claimed in any one of claims 1 to 8, the guide cooling method includes: Collecting control information; the control information includes vehicle speed V and engine temperature T; When the vehicle speed V is greater than a first vehicle speed threshold V1 and the engine temperature T is greater than a first temperature threshold T1, the air guide mechanism (1) is driven to reciprocate in the air outlet direction; When the vehicle speed V is not less than a first vehicle speed threshold V1 and not more than a second vehicle speed threshold V2 and the engine temperature T is greater than a second temperature threshold T2, the air guide mechanism (1) is driven to reciprocate in the air outlet direction; the second temperature threshold T2 is greater than the first temperature threshold T1; When the vehicle speed V exceeds a second vehicle speed threshold value V2, the flow guiding mechanism (1) is controlled to be in a fixed state; The first vehicle speed threshold V1 ranges from 50 to 70 km / h; the second vehicle speed threshold V2 ranges from 110 to 130 km / h; the first temperature threshold T1 ranges from 80 to 95°C; the second temperature threshold T2 ranges from 96 to 110°C.

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