Air supply assembly, air conditioner and vehicle

Abstract

The utility model relates to vehicle air conditioning technical field especially, it relates to a kind of air supply assembly, air conditioner and vehicle, air supply assembly includes: shell and fan, shell is formed with air passage, fan is located in air passage, fan is used to drive airflow movement along the axis direction of fan.This application is located in the air passage of air conditioner by fan, to air passage space is multiplexed, reduce the occupation of fan to vehicle space, while, the axis air supply of fan, also make the air supply direction of fan can keep consistent with the air passage extension direction, to make the air passage replace the original flow guide structure of fan to improve the flow guide of fan become possible, save the use of flow guide structure, reduce the volume of fan, reduce the air passage space occupation of fan, reduce the volume of air passage, improve the space utilization of air supply assembly for vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle air conditioning technology, and more particularly to an air supply component, an air conditioner, and a vehicle. Background Technology

[0002] As an important component of vehicle air conditioning systems, fans are often used to promote airflow to ensure that passengers inside the vehicle can obtain a comfortable temperature and air quality.

[0003] In related technologies, the installation structure of the fan is unreasonable, resulting in low space utilization in vehicles. Utility Model Content

[0004] The purpose of this application is to provide an air supply component, an air conditioner, and a vehicle, which aims to solve the problem that current vehicle air conditioning air supply components occupy a large amount of vehicle space.

[0005] In a first aspect, an air supply assembly is provided for use in a vehicle air conditioning system, comprising: A housing having an air duct formed therein; A fan is installed inside the air duct and is used to drive airflow to move along the axial direction of the fan.

[0006] Optionally, the central axis of the fan coincides with the axis of the air duct.

[0007] Optionally, the housing includes a flow guide and an air supply section that are connected to each other, and the airflow flows through the flow guide to the air supply section; The fan is located in the flow guide section.

[0008] Optionally, the housing includes a flow guide and an air supply section that are connected to each other, and the airflow flows through the flow guide to the air supply section; The fan is located in the air supply section.

[0009] Optionally, the fan includes a first fan and a second fan; the air supply section includes a first air supply section and a second air supply section; The first fan is located in the first air supply section, and the second fan is located in the second air supply section.

[0010] Optionally, the cross-sectional area of ​​the guide section is greater than or equal to the cross-sectional area of ​​the air supply section.

[0011] Optionally, the housing further includes a connecting portion, which connects the flow guide portion and the air supply portion; Along the direction from the guide section to the air supply section, the diameter of the connecting section gradually decreases.

[0012] Optionally, the cross-sectional shape of the connecting portion may include a circle, a rectangle, or a trapezoid.

[0013] Optionally, the fan includes at least one set of impeller assemblies, the impeller assembly including two impellers spaced apart along the axial direction of the fan, the two impellers rotating in opposite directions.

[0014] Optionally, along the axial direction of the fan, the distance between two adjacent impellers is A, where 10mm ≤ A ≤ 30mm.

[0015] Optionally, the hub ratio of each impeller is set to be the same; and / or The radii of all the impellers are set to be the same; and / or The impeller hub ratio is B, where 0.4 ≤ B ≤ 0.45.

[0016] Optionally, the distance between the impeller and the inner wall of the air duct is C, where 1mm ≤ C ≤ 5mm.

[0017] Optionally, the impeller includes: Wheel hub; Multiple blades are provided at circumferential intervals on the outer circumferential surface of the hub.

[0018] Optionally, the impeller includes a first impeller and a second impeller arranged adjacent to each other, the first impeller having a first blade and the second impeller having a second blade; The first blade and the second blade are set to twist in opposite directions.

[0019] Optionally, the number of blades is N, where N ≥ 7. Optionally, the impeller may further include a wind guard for connecting the blades.

[0020] Optionally, the wind protection component includes a wind protection ring, which is sleeved on the outside of each blade, and the end of each blade facing away from the hub is connected to the inner ring surface of the wind protection ring.

[0021] Optionally, the wind shield includes multiple connecting sections, which are connected between adjacent blades.

[0022] Optionally, along the radial direction of the impeller, the projection of the wind shield on the axial surface of the impeller at least partially covers the projection of each blade on the axial surface of the impeller.

[0023] Optionally, the impeller further includes a flow guide structure disposed on the end face of the air shield, the flow guide structure being used to guide the airflow along the axial direction of the impeller.

[0024] Optionally, the impeller includes a first impeller and a second impeller arranged adjacent to each other, the first impeller including a first hub and a first blade, and the second impeller including a second hub and a second blade; The first blade and the first hub intersect at a first intersection line, which has a first endpoint and a second endpoint; the second blade and the second hub intersect at a second intersection line, which has a third endpoint and a fourth endpoint. The second endpoint is projected onto the end face of the first wheel hub to form a first projection point, the fourth endpoint is projected onto the end face of the first wheel hub to form a second projection point, the center point of the end face of the first wheel hub and the first projection point are connected to form a first straight line, and the center point of the end face of the first wheel hub and the second projection point are connected to form a second straight line. When the line connecting the first endpoint and the fourth endpoint is parallel to the axis of the impeller, the angle between the first straight line and the second straight line is . θ , ; Where n is the number of blades of the impeller.

[0025] Optionally, the fan also satisfies the following relationship: ; in, The distance between the trailing edge point of the projection of the first blade onto the end face of the first hub and the leading edge point of the projection of the second blade onto the end face of the first hub; r is the hub radius of the impeller.

[0026] Optionally, the inner wall of the air duct is provided with multiple protrusions.

[0027] Optionally, the protrusion facing the fan is arranged in an arc shape.

[0028] Secondly, an air conditioner is also provided, the air conditioner including an air supply assembly, the air supply assembly including: A housing having an air duct formed therein; A fan is installed inside the air duct and is used to drive airflow to move along the axial direction of the fan.

[0029] Thirdly, a vehicle is also provided, the vehicle including an air conditioner, the air conditioner including an air supply assembly, the air supply assembly including: A housing having an air duct formed therein; A fan is installed inside the air duct and is used to drive airflow to move along the axial direction of the fan.

[0030] This application utilizes the space of the air duct by placing the fan inside the air conditioning duct, thereby reducing the space occupied by the fan in the vehicle. At the same time, the axial air delivery of the fan ensures that the air delivery direction of the fan is consistent with the extension direction of the air duct. This makes it possible for the air duct to replace the original air guide structure of the fan to improve airflow, eliminating the need for the air guide structure, reducing the size of the fan, reducing the space occupied by the fan in the air duct, reducing the air duct volume, and improving the space utilization rate of the air delivery components in the vehicle. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure of an embodiment of the air supply assembly provided in this application; Figure 2 for Figure 1 Side view; Figure 3 for Figure 1 A cross-sectional view of another embodiment of the middle housing; Figure 4 for Figure 1 A schematic diagram of the structure when the central fan is installed in the air supply section; Figure 5 for Figure 1 Schematic diagram of the structure of a medium-sized fan; Figure 6 for Figure 1 Assembly diagram of the blower and ductwork; Figure 7 for Figure 1 A schematic diagram of the wind turbine from another perspective; Figure 8 for Figure 5 Schematic diagram of the middle impeller; Figure 9 for Figure 1 A schematic diagram of the wind turbine from another perspective; Figure 10 A graph showing experimental data on the air volume of the same fan at different phase angles; Figure 11 for Figure 9 Projected view of the first and second blades on the end face of the first hub; Figure 12 for Figure 5 A schematic diagram of another embodiment of the intermediate impeller.

[0033] Figure label: 100 - Air supply assembly; 1-Shell, 11-Guide section, 12-Air supply section, 121-First air supply section, 122-Second air supply section, 13-Connecting section, 14-Air duct, 141-Protrusion; 2-Fan, 2a-First Fan, 2b-Second Fan, 21-Impeller Assembly, 211-Impeller, 211a-First Impeller, 2111a-First Hub, 21111a-End Face of First Hub, 2112a-First Blade, 211b-Second Impeller, 2111b-Second Hub, 2112b-Second Blade, 2111-Hub, 2112-Blade, 2113-Wind Protection Component, 2113a-Wind Protection Ring, 2113b-Connecting Section, 22-Tail Edge Point, 23-Leading Edge Point; 3-First intersection line, 31-First endpoint, 32-Second endpoint; 4-Second intersection line, 41-Fourth endpoint; 5 - First straight line, 6 - Second straight line. Detailed Implementation

[0034] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0035] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0036] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0037] In the embodiments of this application, "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, where the range of similarity is within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0038] This application discloses a vehicle comprising an automobile, a robot, or other form of driving equipment, wherein the automobile includes an electric vehicle (EV), a pure electric vehicle / battery electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), and a plug-in hybrid electric vehicle (PHEV). Hybrid Electric Vehicle (PHEV), New Energy Vehicle, etc.

[0039] In some embodiments, the vehicle includes a body and an air conditioner. The body serves as the main structural component of the vehicle, connecting various vehicle component assemblies. The body forms a driver's cabin, which is equipped with air vents. There may be one, two, or multiple air vents, and their location may be in the front or rear of the driver's cabin; this application does not impose any limitations on this. The air conditioner is located in the body and connects to the various air vents in the driver's cabin to deliver cooled or heated air into the cabin, thereby ensuring the comfort of the driver or passengers.

[0040] In some embodiments, the air conditioner includes a housing, a refrigerant circulation system, and an air supply assembly. The housing serves as the main structural component of the air conditioner, supporting and connecting the various component assemblies. The air conditioner housing can be integrally formed with the vehicle body or it can be a separate structure independent of the vehicle body; this application does not impose any limitations on this.

[0041] The refrigerant circulation system is located inside the air conditioner's casing and is used to cool or heat the space through the circulation of refrigerant. In some embodiments, the refrigerant circulation system includes a compressor, a condenser, an expansion valve, an evaporator, and hydraulic lines. The hydraulic lines connect the compressor, condenser, expansion valve, and evaporator, and refrigerant flows through the hydraulic lines. In specific applications, the refrigerant is first drawn into the compressor and compressed into a high-temperature, high-pressure gas, which is then transported to the condenser via the hydraulic lines. In the condenser, the refrigerant turns into a liquid and releases heat to the surrounding environment, heating the air. The liquid refrigerant then flows through the expansion valve, where its pressure and temperature drop sharply during expansion, transforming into a low-temperature, low-pressure gas. The low-temperature, low-pressure refrigerant then enters the evaporator. In the evaporator, the refrigerant absorbs heat from the surrounding air, causing it to evaporate into a gas, carrying away heat from the surrounding environment and cooling the air. Finally, after evaporation, the refrigerant gas returns to the compressor via the hydraulic lines, restarting the circulation process.

[0042] An air supply assembly is used to deliver air cooled or heated by the refrigerant circulation system into the cockpit through air outlets, thereby regulating the cockpit temperature. In some embodiments, the air supply assembly includes a housing and a fan. The housing forms an air duct connecting the air conditioning unit and the air outlets in the cockpit, to deliver air cooled or heated by the refrigerant circulation system from the unit into the cockpit through the air outlets, thereby regulating the cockpit temperature. The housing can be integrally formed with the vehicle body or can be a separate structure independent of the vehicle body; this application does not limit this.

[0043] Fans are used to generate airflow within ducts to drive the gas to flow within the ducts.

[0044] In related technologies, fans are usually placed outside the air duct, encroaching on the space of other structures in the vehicle. At the same time, fans often use centrifugal fans with axial air intake and radial air exhaust. This means that when the fan is used in the vehicle air conditioning system, it must be equipped with an additional air guiding structure to ensure that the airflow delivered by the fan can flow along a preset path and reduce airflow loss. However, the setting of the air guiding structure will increase the volume of the fan and air duct, reducing the space utilization rate of the air supply components in the vehicle.

[0045] To address the aforementioned issues, in this application, the fan is housed within the air duct, and the fan is an axial flow fan capable of both axial air intake and axial air exhaust, driving the airflow along its axial direction. By placing the fan within the air conditioning duct, the duct space is reused, reducing the fan's footprint in the vehicle. Simultaneously, the axial airflow of the fan ensures that the fan's airflow direction aligns with the duct's extension direction. This makes it possible for the duct to replace the original airflow guide structure, improving airflow guidance for the fan, eliminating the need for a separate guide structure, reducing the fan's size, minimizing its space occupation within the duct, and increasing the space utilization rate of the air delivery components within the vehicle.

[0046] The air supply assembly provided in this application will now be described in detail with reference to the accompanying drawings.

[0047] Please refer to Figure 1 The air supply assembly 100 includes a housing 1 for forming an air duct 14. In some embodiments, the housing 1 includes a guide section 11 and an air supply section 12. The guide section 11 is connected to the air conditioner housing to guide the air that has completed heat exchange inside the housing into the air supply assembly 100.

[0048] One end of the air supply unit 12 is connected to the air guide unit 11, and the other end is connected to the air outlet of the cockpit. Air in the air duct 14 can reach the air outlet through the air supply unit 12, and then enter the cockpit through the air outlet. The number of air supply units 12 can be one, two, or multiple. Regarding the connection with the air outlet, one air supply unit 12 can be connected to one air outlet, or one air supply unit 12 can be connected to multiple air outlets. This application does not limit this.

[0049] In some embodiments, the cross-sectional area of ​​the guide section 11 is greater than or equal to the cross-sectional area of ​​the air supply section 12. The larger area of ​​the guide section 11 can effectively reduce the air velocity at the point where the air enters the air supply assembly 100, reduce the turbulence and resistance when the air enters the air supply assembly 100, reduce the energy loss of the air, and improve the air supply efficiency of the air supply assembly 100.

[0050] The cross-sectional shape of the guide section 11 can be circular, rectangular, trapezoidal, or other regular or irregular shapes, and this application does not limit it. In some embodiments, the cross-sectional shape of the guide section 11 is circular, so that the internal contour of the guide section 11 can fit with the rotation contour of the fan, thereby reducing the resistance of the duct 14 contour to the airflow of the fan 2, reducing the leakage of airflow between the fan 2 and the guide section 11, increasing the power of the fan 2, and improving the air delivery efficiency of the air supply assembly 100.

[0051] Please refer to Figure 2In some embodiments, the housing 1 further includes a connecting portion 13, which connects the flow guide portion 11 and the air supply portion 12. The connecting portion 13 is used to deliver the airflow gathered by the flow guide portion 11 into the air supply portion 12. The diameter of the connecting portion 13 gradually decreases along the direction from the flow guide portion 11 to the air supply portion 12. This arrangement allows for a smooth transition in the outline of the housing 1 from the flow guide portion 11 to the air supply portion 12, reducing the processing cost of the housing 1, since the cross-sectional area of ​​the flow guide portion 11 is generally larger than that of the air supply portion 12.

[0052] The cross-sectional shape of the connecting portion 13 can be any shape. In some embodiments, the cross-section of the connecting portion 13 is circular, and the smooth circular surface can effectively reduce the airflow resistance within the connecting portion 13 and improve the airflow efficiency within the connecting portion 13. In some embodiments, the cross-section of the connecting portion 13 can be rectangular, and the rectangle has a larger area, which can effectively reduce the resistance of the airflow entering the connecting portion 13 and improve the smoothness of the airflow passing through the connecting portion 13. In some embodiments, the cross-section of the connecting portion 13 can be trapezoidal, and the trapezoid has higher stability, which can effectively improve the strength of the connecting portion 13.

[0053] The air guide 11, the air supply 12 and the connecting part 13 can be integrally formed or they can be formed separately and then connected. This application does not limit this.

[0054] Please refer to Figure 3 In some embodiments, the inner wall of the air duct 14 is provided with multiple protrusions 141. It should be noted that the location of the protrusions 141 is related to the location of the fan 2. When the fan 2 is located in the guide section 11, the protrusions 141 are located on the wall of the guide section 11; when the fan 2 is located in the connecting section 12, the protrusions 141 are located on the wall of the connecting section 12; and when the fan 2 is located in the air supply section 13, the fan 2 is located on the wall of the air supply section 13. This application does not impose any limitations on this. The protrusions 141 can, on the one hand, reduce the distance between the fan 2 and the inner wall, reduce the leakage of airflow between the fan 2 and the inner wall of the air duct 14, and increase the power output of the fan 2. On the other hand, they can effectively enhance the turbulent mixing degree of the airflow, making the airflow within the air duct 14 more uniform, reducing energy loss caused by uneven flow, and improving the air supply efficiency of the air supply assembly 100.

[0055] The shape of the protrusion 141 can be a sphere, a cuboid, a cube, or other regular or irregular shapes, and this application does not impose any limitations on this. In one embodiment of this application, the end of the protrusion 141 facing the fan 2 is arranged in an arc shape, thereby reducing the resistance of the protrusion 141 to the airflow, reducing the energy loss of the airflow when passing through the protrusion 141, and improving the air delivery efficiency of the air supply assembly 100.

[0056] The fan 2 is located inside the air duct 14. The fan 2 is an axial flow fan that can drive airflow to flow along its axial direction. In some embodiments, the central axis of the fan 2 coincides with the axis of the air duct 14. This ensures that the airflow of the fan 2 can flow along the central direction of the air duct 14, reduces the possibility of airflow colliding with the air duct 14, reduces airflow loss, and improves the air delivery capacity of the air supply assembly 100.

[0057] It should be noted that the above-mentioned coincidence does not mean that the axis of the duct 14 is completely coincident and parallel to the central axis of the fan 2. When there is a deviation between the axis of the fan 2 and the axis of the duct 14, and the maximum deviation is within 10mm, it can be regarded as the central axis of the fan 2 and the axis of the duct 14 being coincident.

[0058] There are several ways to install fan 2 within air duct 14; please refer to [the relevant documentation]. Figure 1 In some embodiments, the fan 2 may be located inside the guide section 11. The fan 2 can drive the airflow through the guide section 11 into the air supply assembly 100, and then through the air supply section 12 to reach the air outlet.

[0059] Please refer to Figure 4 In other embodiments, the fan 2 may also be disposed within the air supply section 12. Exemplarily, the fan 2 includes a first fan 2a and a second fan 2b, and the air supply section 12 includes a first air supply section 121 and a second air supply section 122. The first air supply section 121 and the second air supply section 122 are respectively connected to different air outlets. The first fan 2a is disposed within the first air supply section 121, and the second fan 2b is disposed within the second air supply section 122. When the first fan 2a is turned on, air inside the housing can enter the cockpit via the guide section 11, the first air supply section 121, and the air outlet connected to the first air supply section 121. When the second fan 2b is turned on, air inside the housing can enter the cockpit via the guide section 11, the second air supply section 122, and the air outlet connected to the second air supply section 122. When the first fan 2a and the second fan 2b are turned on simultaneously, airflow can enter the driver's cabin through the guide section 11, the first air supply section 121, the second air supply section 122, and the air outlets connected to the first air supply section 121 and the second air supply section 122. The vehicle can adjust the airflow of different air outlets by controlling the opening and closing of the first fan 2a or the second fan 2b, thereby meeting the different thermal regulation needs of the vehicle and improving the versatility of the vehicle's air conditioning system.

[0060] Understandably, in other embodiments, one or more air supply units 12 may also be provided, and correspondingly, one or more fans 2 may also be provided to meet different air supply requirements. This application does not impose any restrictions on this.

[0061] Please refer to Figure 5 To improve the air delivery effect of the fan 2, in some embodiments, the fan 2 includes an impeller assembly 21. The number of impeller assemblies 21 can be one, two, or more, and this application does not limit this. Exemplarily, the fan includes one impeller assembly 21, and a set of impeller assemblies 21 includes two impellers 211 spaced apart along the axial direction of the fan 2, with the rotation directions of the two impellers 211 set to opposite directions. For ease of explanation, the impeller closer to the housing is referred to as the first impeller 211a, and the impeller farther from the housing is referred to as the second impeller 211b.

[0062] In practical applications, when the fan 2 starts working, the airflow inside the casing will reach the first impeller 211a under the negative pressure of the fan 2, and after completing the first-stage acceleration at the first impeller 211a, it will enter the second impeller 211b. After reaching the second impeller 211b, the airflow will undergo a second-stage acceleration under the reverse force of the second impeller 211b, thereby increasing the power output of the fan 2 and improving the air delivery effect of the air supply assembly 100 without increasing the diameter of the fan 2.

[0063] Understandably, in other possible implementations, the fan 2 may also include two sets of impeller assemblies 21 or three sets of impeller assemblies 21. When the fan 2 includes two sets of impeller assemblies 21, the fan 2 has four impellers 211. When the fan includes three sets of impeller assemblies 21, the fan has six impellers 211. This application does not limit this.

[0064] Please refer to Figure 6 In some embodiments, the distance between the impeller 211 and the inner wall of the duct 14 satisfies: 1mm ≤ C ≤ 5mm, where C can be 1mm, 2mm, 3mm, 4mm, or 5mm. This dimensional constraint avoids the impeller 211 being too close to the wall of the duct 14, which would increase the difficulty of assembling the fan 2 and the duct 14, while also preventing the impeller 211 from being too far from the wall of the duct 14, which would increase airflow leakage between the fan 2 and the inner wall of the duct 14, affecting the power output of the fan 2.

[0065] Please refer to Figure 7In some embodiments, the distance between two adjacent impellers 211 along the axial direction of the fan 2 is A, where 10mm ≤ A ≤ 30mm. A can be 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, or 30mm, and this application does not impose any limitation on this. This distance constraint avoids the airflow interference between adjacent impellers 211 due to excessively close distances, thus preventing increased energy consumption of the fan 2. It also avoids excessively large distances between adjacent impellers 211, which could prevent the airflow from undergoing secondary acceleration after primary acceleration, thus affecting the power output of the fan 2.

[0066] Please refer to Figure 8 In some embodiments, the impeller 211 includes a hub 2111 and a plurality of blades 2112. The hub 2111 serves as the rotation center of the impeller 211. The plurality of blades 2112 are spaced apart on the outer circumferential surface of the hub 2111 along the circumference of the hub 2111. The fan 2 also includes a motor, which is housed in the hub 2111 and can drive the hub 2111 to rotate, thereby driving the blades 2112 to rotate and thus driving the airflow.

[0067] The number of blades 2112 can be 3, 5, or 7, and this application does not limit this. In some embodiments, the number of blades 2112 is N, where N≥7, in order to ensure the guiding ability of the blades 2112 for airflow, thereby ensuring the driving efficiency of the fan 2 for airflow.

[0068] Please refer to Figure 9 In some embodiments, the impeller 211 includes a first impeller 211a and a second impeller 211b arranged adjacent to each other. The first impeller 211a has a first blade 2112a, and the second impeller 211b has a second blade 2112b. The twisting directions of the first blade 2112a and the second blade 2112b are set to be opposite, so as to increase the difference in reverse work done by the first impeller 211a and the second impeller 211b, increase the work done by the second impeller 211b on the airflow, and increase the power output of the fan 2.

[0069] In some embodiments, the first blade 2112a and the first hub 2111a intersect at a first intersection line 3, the first intersection line 3 having a first endpoint 31 and a second endpoint 32; the second blade 2112b and the second hub 2111b intersect at a second intersection line 4, the second intersection line 4 having a third endpoint (not shown) and a fourth endpoint 41; the second endpoint 32 is projected onto the end face 21111a of the first hub to form a first projection point, the fourth endpoint 41 is projected onto the end face 21111a of the first hub to form a second projection point, the center point of the end face 21111a of the first hub is connected to the first projection point to form a first straight line 5, and the center point of the end face 21111a of the first hub is connected to the second projection point to form a second straight line 6; when the direction of the line connecting the first endpoint 31 and the fourth endpoint is parallel to the axial direction of the impeller 211, the included angle between the first straight line 5 and the second straight line 6 is... θ , θ That is, the phase angle between the first impeller 211a and the second impeller 211b. In this embodiment, the phase angle... θ The number of blades 2112 n satisfies the following relationship: 。

[0070] Please refer to Figure 10 , Figure 10 The graph shows experimental data on the air output of the same fan at different phase angles. The number of blades in the experimental fan is N=7. The experimental data shows that when... At this time, the fan 2 can achieve a larger air volume, thus increasing the air volume of the fan 2 and improving the delivery efficiency of the air supply assembly 100 without increasing the radius of the impeller 211.

[0071] Please refer to Figure 11 In some implementations, the fan 2 also satisfies the following relationship: ;in, Let r be the distance between the trailing edge point 22 of the projection of the first blade 2112a onto the end face 21111a of the first hub and the leading edge point 23 of the projection of the second blade 2112b onto the end face 21111a of the first hub, i.e., the phase difference between the first impeller 211a and the second impeller 211b, and let r be the radius of the hub 2111 of the impeller 211. Under the limitation of this phase difference range, the fan 2 can achieve a larger air volume. Thus, without increasing the radius of the impeller 211, the air volume of the fan 2 can be increased, and the air supply efficiency of the air supply assembly 100 can be improved.

[0072] Please refer to Figure 6 and Figure 8The ratio of the diameter of the hub 2111 to the diameter of the impeller 211 is called the hub ratio. In some embodiments, the hub ratio of the impeller 211 is B, where 0.4 ≤ B ≤ 0.45. B can be 0.41, 0.42, 0.43, or 0.44, and this application does not impose any restrictions on this. Under this hub ratio constraint, it can be ensured that the diameter of the hub 2111 is not too large, which would reduce the length of the blade 2112 and affect the air delivery efficiency of the fan 2. At the same time, it can be ensured that the diameter of the hub 2111 is not too small, which would reduce the connection capacity of the hub 2111 to the impeller 211, thereby reducing the strength of the connection between the blade 2112 and the hub 2111 and affecting the work capacity of the blade 2112.

[0073] In some embodiments, the radius and hub ratio of each impeller 211 are set to be the same. This ensures the consistency of the work done by the impellers 211, reduces turbulence in the airflow between the impellers 211, reduces energy loss of the airflow, and improves the air delivery efficiency of the air supply assembly 100. It is understood that in other possible embodiments, it is also possible to ensure that only the radius or hub ratio of each impeller 211 is the same, and this application does not limit this.

[0074] In some embodiments, the impeller 211 further includes a wind guard 2113, which forms an accommodating space in which the blades 2112 are housed. The wind guard 2113 connects the blades 2112, thereby enhancing the strength between the blades 2112, reducing the relative movement of the blades 2112 when the impeller 211 rotates, reducing airflow interference between the blades 2112, and improving the power output of the fan 2.

[0075] The structure of the wind shield 2113 can be varied. In some embodiments, the wind shield 2113 includes a wind shield ring 2113a, which is sleeved on the outside of each blade 2112. The end of each blade facing away from the hub 2111 is connected to the inner ring surface of the wind shield ring 2113a. The setting of the wind shield ring 2113a can effectively increase the contact area between the wind shield 2113 and the blade, increase the support strength of the wind shield 2113 for the blade 2112, improve the stability of the blade 2112 when the impeller 211 rotates, reduce the airflow turbulence between the blades 2112, and increase the power output of the fan.

[0076] Please refer to Figure 12 In some other embodiments, the wind shield 2113 includes multiple connecting segments 2113b, which are connected between adjacent blades 2112. The multiple connecting segments 2113b can reduce the material used in the wind shield 2113 and reduce the manufacturing cost of the impeller 211 while ensuring the stability of the blade tip.

[0077] It should be noted that when verifying the distance between the impeller 211 and the inner wall of the air duct 14, if the impeller 211 has a windproof component 2113, the distance between the impeller 211 and the inner wall of the air duct 14 is the distance between the windproof component 2113 and the inner wall of the air duct 14. When the impeller 211 does not have a windproof component 2113, the distance between the impeller 211 and the inner wall of the air duct 14 is the distance between the end of the blade away from the hub 2111 and the inner wall of the air duct 14.

[0078] In some embodiments, the blade 2112 can be completely located within the accommodating space formed by the wind shield 2113. In this case, the projection of the wind shield 2113 on the axial surface of the impeller 211 completely covers the projection of the blade 2112 on the axial surface of the impeller 211. This maximizes the contact area between the wind shield 2113 and the blade 2112, increases the support strength of the wind shield 2113 for the blade 2112, reduces the leakage of airflow between the fan and the inner wall of the duct 14, and increases the power output of the fan.

[0079] In some other embodiments, the blade 2112 may also be partially located within the receiving space formed by the wind shield 2113 and partially extend out of the receiving space. In this case, the projection of the wind shield 2113 onto the axial surface of the impeller 211 covers the projection of the blade 2112 onto the axial surface of the impeller 211. This reduces the amount of material used in the manufacture of the wind shield 2113 and lowers the manufacturing cost of the fan.

[0080] In some embodiments, the impeller further includes a flow guide structure disposed on the end face of the air shield. The flow guide structure can be an arc-shaped guide plate disposed on the end face of the air shield, or a cylindrical guide pipe; this application does not limit this. The flow guide structure is used to guide the airflow along the axial direction of the impeller, thereby reducing the collision between the airflow and the inner wall of the duct, reducing energy loss of the airflow within the duct, and improving the air delivery efficiency of the air supply assembly.

[0081] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0082] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air supply assembly, used in vehicle air conditioning, characterized in that, include: A housing (1) having an air duct (14) formed therein; A fan (2) is located in the air duct (14) and is used to drive the airflow to move along the axial direction of the fan (2).

2. The air supply assembly according to claim 1, characterized in that, The central axis of the fan (2) coincides with the axis of the air duct (14).

3. The air supply assembly according to claim 1, characterized in that, The housing (1) includes a flow guide (11) and an air supply (12) that are connected to each other, and the airflow flows through the flow guide (11) to the air supply (12); The fan (2) is located in the flow guide (11).

4. The air supply assembly according to claim 1, characterized in that, The housing (1) includes a flow guide (11) and an air supply (12) that are connected to each other, and the airflow flows through the flow guide (11) to the air supply (12); The fan (2) is located in the air supply section (12).

5. The air supply assembly according to claim 4, characterized in that, The fan (2) includes a first fan (2a) and a second fan (2b); the air supply section (12) includes a first air supply section (121) and a second air supply section (122); The first fan (2a) is located in the first air supply section (121), and the second fan (2b) is located in the second air supply section (122).

6. The air supply assembly according to any one of claims 3-5, characterized in that, The cross-sectional area of ​​the guide section (11) is greater than or equal to the cross-sectional area of ​​the air supply section (12).

7. The air supply assembly according to any one of claims 3-5, characterized in that, The housing (1) further includes a connecting part (13), which is connected between the flow guide (11) and the air supply part (12); Along the direction from the guide section (11) to the air supply section (12), the diameter of the connecting section (13) gradually decreases.

8. The air supply assembly according to claim 7, characterized in that, The cross-sectional shape of the connecting part (13) includes a circle, a rectangle or a trapezoid.

9. The air supply assembly according to any one of claims 1-4, characterized in that, The fan (2) includes at least one set of impeller assemblies (21), the impeller assembly (21) including two impellers (211) spaced apart along the axial direction of the fan (2), the two impellers (211) being set to rotate in opposite directions.

10. The air supply assembly according to claim 9, characterized in that, Along the axial direction of the fan (2), the distance between two adjacent impellers (211) is A, 10mm≤A≤30mm.

11. The air supply assembly according to claim 9, characterized in that, The hub ratios of all the impellers (211) are set to be the same; and / or The radii of each of the impellers (211) are set to be the same; and / or The hub ratio of the impeller (211) is B, where 0.4 ≤ B ≤ 0.

45.

12. The air supply assembly according to claim 9, characterized in that, The distance between the impeller (211) and the inner wall of the air duct (14) is C, where 1mm≤C≤5mm.

13. The air supply assembly according to claim 9, characterized in that, The impeller (211) includes: Wheel hub (2111); Multiple blades (2112) are spaced apart on the outer circumferential surface of the hub (2111) along the circumferential direction of the hub (2111).

14. The air supply assembly according to claim 13, characterized in that, The impeller assembly (21) includes a first impeller (211a) and a second impeller (211b) arranged adjacent to each other, the first impeller (211a) having a first blade (2112a) and the second impeller (211b) having a second blade (2112b); The first blade (2112a) and the second blade (2112b) are set to twist in opposite directions.

15. The air supply assembly according to claim 13, characterized in that, The number of blades (2112) is N, where N≥7.

16. The air supply assembly according to any one of claims 13-15, characterized in that, The impeller (211) also includes a wind guard (2113) for connecting the blades (2112).

17. The air supply assembly according to claim 16, characterized in that, The wind protection component (2113) includes a wind protection ring (2113a), which is sleeved on the outside of each blade (2112), and the end of each blade (2112) facing away from the hub (2111) is connected to the inner ring surface of the wind protection ring (2113a).

18. The air supply assembly according to claim 16, characterized in that, The wind shield (2113) includes a plurality of connecting sections (2113b) connected between each adjacent blade (2112).

19. The air supply assembly according to claim 16, characterized in that, Along the radial direction of the impeller (211), the projection of the wind shield (2113) onto the axial surface of the impeller (211) at least partially covers the projection of each of the blades (2112) onto the axial surface of the impeller (211).

20. The air supply assembly according to claim 16, characterized in that, The impeller (211) also includes a flow guide structure, which is disposed on the end face of the wind shield (2113) and is used to guide the airflow to move along the axial direction of the impeller (211).

21. The air supply assembly according to claim 13, characterized in that, The impeller (211) includes a first impeller (211a) and a second impeller (211b) arranged adjacent to each other. The first impeller (211a) includes a first hub (2111a) and a first blade (2112a). The second impeller (211b) includes a second hub (2111b) and a second blade (2112b). The first blade (2112a) and the first hub (2111a) intersect at a first intersection line (3), the first intersection line (3) having a first endpoint (31) and a second endpoint (32); the second blade (2112b) and the second hub (2111b) intersect at a second intersection line (4), the second intersection line (4) having a third endpoint and a fourth endpoint (41); The second endpoint (32) is projected onto the end face (21111a) of the first hub to form a first projection point, and the fourth endpoint (41) is projected onto the end face (21111a) of the first hub to form a second projection point. The center point of the end face (21111a) of the first hub is connected to the first projection point to form a first straight line (5), and the center point of the end face (21111a) of the first hub is connected to the second projection point to form a second straight line (6). When the line connecting the first endpoint (31) and the fourth endpoint (41) is parallel to the axis of the impeller, the angle between the first straight line (5) and the second straight line (6) is... θ , ; Where n is the number of blades (2112) of the impeller.

22. The air supply assembly according to claim 21, characterized in that, The fan (2) also satisfies the following relationship: ; in, The distance between the trailing edge point (22) of the projection of the first blade (2112a) onto the end face (21111a) of the first hub and the leading edge point (23) of the projection of the second blade (2112b) onto the end face (21111a) of the first hub; r is the radius of the hub (2111) of the impeller (211).

23. The air supply assembly according to claim 1, characterized in that, The inner wall of the air duct (14) is provided with multiple protrusions (141).

24. The air supply assembly according to claim 23, characterized in that, The protrusion (141) is arc-shaped at the end facing the fan (2).

25. An air conditioner, characterized in that, Includes the air supply assembly as described in any one of claims 1-24.

26. A vehicle, characterized in that, Includes the air supply assembly as described in any one of claims 1-24, or the air conditioner as described in claim 25.

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