Air inlet guide structure of air conditioner suction type blower for vehicle

Abstract

The utility model discloses an air intake guide structure of vehicle air conditioner suction type blower, including volute, turbine and shunt component, be equipped with air intake and be set up upper air outlet channel and lower air outlet channel of upper and lower on volute, the shunt component middle part downward extends and forms a guide cylinder, is placed in the turbine, and the inside and outside two sides of shunt component form outer guide wind channel and inner guide wind channel respectively, outer guide wind channel and inner guide wind channel are linked with upper air outlet channel and lower air outlet channel respectively, still install a wind vane in the guide cylinder, the wind vane includes the rim of middle part and the wind vane blade of connection between rim and guide cylinder inner wall, the rim is a spiral winding body, the wind vane blade all is arc curved shape, and the bending direction of each wind vane blade is opposite with the bending direction of each guide vane in turbine, and the inner end of one of wind vane blade is connected in the spiral starting end of rim, and the middle part is connected in the end of rim spiral.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning, specifically to an air inlet guide structure for an automotive air conditioning intake blower. Background Technology

[0002] Existing automotive air conditioning intake blowers mainly consist of a volute, a turbine, and a flow divider. The volute has an air inlet and upper and lower air outlet channels arranged vertically. The turbine is installed inside the volute and can rotate around its axis. The flow divider is installed at the air inlet of the volute, extending downwards in the middle to form a guide tube. The guide tube is placed inside the turbine, with a first airflow channel and a second airflow channel forming on its inner and outer sides, respectively. The first airflow channel allows a portion of the air from the intake to pass through the upper end of the turbine and be discharged through the upper air outlet channel. The second airflow channel allows a portion of the air from the intake to pass through the lower end of the turbine and be discharged through the lower air outlet channel. While this intake blower achieves vertical airflow guidance, the flow divider, installed at the air inlet, reduces the cross-sectional area of ​​the passage for the recirculated air to enter the turbine impeller at the lower end, increasing airflow resistance and consequently increasing turbulent kinetic energy. This leads to reduced airflow and increased intake noise. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide an air inlet guide structure for a vehicle air conditioning intake blower, which solves the problem that the flow diversion components set in the existing blowers easily lead to increased airflow resistance, reduced air volume, and increased intake noise.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An air inlet guide structure for a vehicle air conditioning intake blower includes a volute, a turbine, and a flow divider. The volute has an air inlet and an upper and lower air outlet channel arranged vertically. The turbine is installed inside the volute. The flow divider is installed at the air inlet of the volute and extends downwards in the middle to form a guide tube. The guide tube is placed inside the turbine, with an outer and inner guide duct forming an outer and inner guide duct respectively. The outer and inner guide ducts are connected to the upper and lower air outlet channels, respectively. A guide wheel is also installed inside the guide tube. The guide wheel includes a rim in the middle and guide blades connecting the rim to the inner wall of the guide tube. The rim is a spiral coil. The guide blades are all curved in an arc shape, with the curvature direction of each guide blade opposite to that of the guide blades in the turbine. The inner end of one guide blade is connected to the spiral start end of the rim, and the middle part is connected to the spiral end of the rim. After adding a guide vane inside the flow divider, when the turbine rotates, the circulating air inside the vehicle enters the guide vane in a spiral shape before entering the guide vane. When it passes through the guide vane, the incoming airflow is rectified, causing the airflow to twist before entering the impeller at the lower end of the turbine, thereby reducing the turbulent kinetic energy of the incoming airflow and achieving the purpose of noise reduction and airflow increase.

[0006] Furthermore, the upper end of the guide tube extends outward circumferentially to form a guide plate, which is fixedly connected to the upper end of the volute by fasteners. The guide plate formed by the outward extension of the upper end of the guide tube can divert the air at the air inlet, allowing the air corresponding to the guide tube section to enter the guide tube through the guide plate. The outer edge of the guide plate is fixedly connected to the upper end of the volute by fasteners, making installation and disassembly convenient.

[0007] Furthermore, multiple air guide vanes are provided on the air deflector plate, which are aligned with the bending direction of the air guide blades. In this way, the air guide vanes on the air deflector plate can perform preliminary rectification of the airflow at the air inlet, reducing turbulent kinetic energy.

[0008] Furthermore, multiple reinforcing ribs are spaced apart on the outer side of the guide vane; the upper ends of two guide vanes on opposite sides extend upwards to connect with the guide vane, forming a reinforced guide vane. These reinforcing ribs increase the strength of the guide vane, enhance the wind resistance of the diversion component, and prevent deformation. The reinforced guide vane formed by the upward extension of the upper ends of the two opposite guide vanes can initially rectify the airflow before it enters the guide vane and increase the installation strength of the guide vane.

[0009] Furthermore, both the upper and lower ends of the guide tube are bent towards the turbine, forming a trumpet shape, and the axial installation height of the guide tube corresponds to the installation height of the upper air outlet duct. In this way, when entering the outer airflow duct, the airflow enters or exits in an arc-shaped path, without significant wind resistance.

[0010] Furthermore, the spacing between adjacent guide vanes is equal. This ensures the guide vanes are evenly distributed, resulting in a more balanced distribution of airflow during rectification. Attached Figure Description

[0011] Figure 1 This is a schematic cross-sectional view of a conventional suction blower.

[0012] Figure 2 This is a three-dimensional structural diagram of the suction blower in the embodiment;

[0013] Figure 3 This is a three-dimensional structural diagram of the diversion component in the embodiment;

[0014] Figure 4 This is a top view of the suction blower in the embodiment;

[0015] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of AA;

[0016] Figure 6 This is a side view of the suction blower in the embodiment;

[0017] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure of BB. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1 As shown, existing automotive air conditioning intake blowers mainly include a volute 1, a turbine 2, and a flow divider 3. The air guide duct at the lower end of the flow divider 3 is placed inside the turbine 2 and located above it. The inner and outer sides of the air guide duct of the flow divider 3 form an outer flow duct 4 and an inner flow duct 5. The outer flow duct 4 introduces fresh external air, guides it to the upper part of the turbine 2, and then enters the upper air outlet duct 11, blowing it out to the upper surface of the vehicle's passenger compartment or the defrosting area, thus providing fresh air for a comfortable experience. The inner flow duct 5 introduces recirculated air from inside the vehicle into the air guide duct, which then flows to the lower end of the turbine 2 and finally enters the lower air outlet duct 12, blowing towards the feet of the occupants. The recirculated air inside the vehicle has a high intake temperature, which helps save the vehicle's limited electrical energy. However, this structure increases the airflow resistance of the recirculated air inside the vehicle, reduces airflow volume, and increases wind noise.

[0021] like Figures 2-7As shown, this embodiment provides an air inlet guide structure for a vehicle air conditioning intake blower, including a volute 1, a cylindrical turbine 2, and a flow divider 3. The volute 1 has an air inlet and an upper air outlet channel 11 and a lower air outlet channel 12 arranged vertically. The turbine 2 is installed inside the volute 1. The flow divider 3 is installed at the air inlet of the volute 1, extending downwards in the middle to form a guide tube 31. The guide tube 31 is placed inside the turbine 2, with an outer guide air duct 4 and an inner guide air duct 5 formed on its inner and outer sides, respectively. The outer guide air duct 4 and the inner guide air duct 5 are respectively connected to the upper air outlet channel 11 and the lower air outlet channel 12. The axis of the guide tube 31 overlaps with the axis of the turbine 2, and the turbine 2... The channel formed between the turbine 2 and the inner side of the volute 1 gradually increases from one side to the other. A wind guide wheel 33 is also installed inside the guide tube 31. The wind guide wheel 33 includes a wheel rim 331 located in the middle and wind guide blades 332 connected between the wheel rim 331 and the inner wall of the guide tube 31. The wheel rim 331 is a spiral coiled body (the outer end of the wheel rim 331 is close to the narrower part of the space between the turbine 2 and the volute 1 - i.e., the volute tongue position). The wind guide blades 332 are all curved in an arc shape. The curvature direction of each wind guide blade 332 is opposite to the curvature direction of each guide blade in the turbine 2. The inner end of one wind guide blade 332 is connected to the starting end of the wheel rim spiral, and the middle part is connected to the end of the wheel rim spiral. After adding a guide vane 33 inside the guide tube 31 of the flow divider 3, when the turbine 2 rotates, the airflow of the vehicle's circulating air enters the guide tube in a spiral shape before entering the guide vane 33. When it passes through the guide vane 33, the airflow will be rectified, causing the airflow to be twisted before entering the impeller at the lower end of the turbine 2, thereby reducing the turbulent kinetic energy of the incoming air and achieving the purpose of noise reduction and air volume increase.

[0022] like Figure 3 As shown, the upper end of the guide tube 31 extends outward in a circumferential direction to form a guide plate 32, which is fixedly connected to the upper end of the volute 1 by fasteners. The guide plate 32 formed by the outward extension of the upper end of the guide tube 31 can divert the air at the air inlet, allowing the air corresponding to the part of the guide tube 31 to enter the guide tube 31 through the guide plate 32. The outer edge of the guide plate 32 is fixedly connected to the upper end of the volute 1 by fasteners, making installation and disassembly convenient.

[0023] Furthermore, the guide vane 32 is provided with multiple guide vanes 34 that are aligned with the bending direction of the guide vanes 332. In this way, the guide vanes 34 provided on the guide vane 32 can perform preliminary rectification of the airflow at the air inlet and reduce turbulent kinetic energy.

[0024] Furthermore, multiple reinforcing ribs 35 are spaced apart on the outer side of the guide plate 32; the upper ends of two guide vanes 332 on opposite sides extend upwards and connect with the guide plate 32 to form a reinforced guide plate 333. In this way, the reinforcing ribs 35 increase the strength of the guide plate 32, increase the wind resistance of the diversion component 3, and prevent deformation. The reinforced guide plate 333 formed by the upward extension of the upper ends of the two opposite guide vanes 332 can initially rectify the airflow before it enters the guide wheel 33 and increase the installation strength of the guide wheel 33.

[0025] Furthermore, both the upper and lower ends of the guide tube 31 are bent towards the turbine 2, forming a trumpet shape, and the axial installation height of the guide tube 31 corresponds to the installation height of the upper air outlet channel 11. In this way, when entering the outer guide air duct 4, the airflow enters or exits in an arc-shaped path, without significant wind resistance.

[0026] In this embodiment, there are six guide vanes 332, with equal spacing between adjacent guide vanes 332. The longitudinal width of the guide vanes 332 gradually increases from one side of the rim 331 to the other. In this way, the guide vanes 332 are evenly distributed, and each guide vane 332 receives a relatively balanced load during airflow rectification.

[0027] To further illustrate the airflow and noise reduction effects in this embodiment, the first simulation object is the intake blower used in the prior art, the second simulation object is the intake blower with the flow splitting component structure used in this embodiment, and the third simulation object is the intake blower with the guide vane bending direction aligned with the turbine blade bending direction. The simulation data comparison table is as follows:

[0028] Simulation object Air volume Wind noise Simulation Object 1 533.1 m³ / h 63.6dB Simulation Object 2 552.8 m³ / h 63.1dB Simulation object 3 529.6 m³ / h 64.2 dB

[0029] As shown in the simulation data comparison table above, compared with the diversion component set in the prior art, adding a guide vane inside the guide tube of the diversion component increases the air volume by 3.7% and reduces the sound pressure level from 63.6dB to 63.1dB, a decrease of 0.5dB. Meanwhile, if the bending direction of the guide vanes is consistent with the bending direction of the turbine blades, the air volume will be reduced and the wind noise will be increased compared to the diversion component in this embodiment.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. An air inlet guiding structure for a vehicle air conditioning intake blower, comprising a volute, a turbine, and a flow-dividing component, wherein the volute has an air inlet and an upper air outlet channel and a lower air outlet channel arranged vertically; the turbine is installed inside the volute, the flow-dividing component is installed at the air inlet of the volute, and extends downward in the middle to form a flow guide tube, the flow guide tube is placed inside the turbine, and an outer flow guide duct and an inner flow guide duct are formed on the inner and outer sides respectively, the outer flow guide duct and the inner flow guide duct being connected to the upper air outlet channel and the lower air outlet channel respectively; characterized in that, A wind guide wheel is also installed inside the guide tube. The wind guide wheel includes a rim in the middle and wind guide blades connected between the rim and the inner wall of the guide tube. The rim is a spiral coiled body. The wind guide blades are all curved in an arc shape. The curvature of each wind guide blade is opposite to the curvature of each guide blade in the turbine. The inner end of one wind guide blade is connected to the spiral start end of the rim, and the middle part is connected to the spiral end of the rim.

2. The air intake guide structure of the suction-type blower for a vehicle air conditioner according to claim 1, characterized in that, The upper end of the guide tube extends outward in a circumferential direction to form a guide plate, which is fixedly connected to the upper end of the volute by fasteners.

3. The air intake flow guide structure of a suction-type air blower for a vehicle air conditioner according to claim 1 or 2, characterized in that, The air guide plate has multiple air guide plates that are aligned with the bending direction of the air guide blades.

4. The air intake of a suction-type air blower for a vehicle air conditioner according to claim 3, characterized in that, Multiple reinforcing ribs are spaced apart on the outside of the air guide plate; the upper ends of two air guide blades on opposite sides extend upward and connect with the air guide plate to form a reinforced air guide plate.

5. The air inlet guide structure of the vehicle air conditioning intake blower according to claim 1, 2, or 4, characterized in that, The upper and lower ends of the guide tube are both bent towards the turbine direction, forming a trumpet shape, and the axial installation height of the guide tube corresponds to the installation height of the upper air outlet duct.

6. The air intake flow guide structure of a suction-type air blower for a vehicle air conditioner according to claim 1 or 2 or 4, characterized in that, The spacing between two adjacent air guide blades is equal.

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