Air inlet device and vehicle
By setting a sound-silencing mechanism composed of outer ring, inner ring and flow-draining blades at the air inlet of the automobile air conditioner blower, the problem of high-frequency howling in the prior art is solved, and a more uniform air flow guidance and lower noise are achieved, and the user experience is improved.
Patent Information
- Application Number
- CN202421381180.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The air inlet device of existing automobile air conditioning blowers cannot guide airflow due to the rib structure, which leads to high-frequency howling, affecting the comfort and user experience in the car.
An air inlet device is designed, including a sound silencer mechanism and a blower mechanism. The sound silencer mechanism is composed of an outer ring, an inner ring and a plurality of flow vanes. The flow vanes are evenly distributed along the circumference of the outer ring and the inner ring, and the air flow is guided through the flow vanes to reduce high-frequency howling.
By setting up a sound silencer at the air inlet of the blower mechanism, the high-frequency howling of airflow when entering can be reduced to a certain extent, the user's sense of use can be improved, and the uniformity of gas flow and flow direction can be maintained.
Smart Images
Figure CN222558871U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle-mounted air conditioners, in particular to an air intake device and a vehicle. Background Art
[0002] In the field of automotive air conditioning, as people pursue a more comfortable life, the performance index requirements for air conditioning noise are becoming more and more stringent, and higher requirements are put forward for the noise index of blower design. The existing blower inlet has several rib-like structures evenly distributed. Since the rib-like structures cannot guide the airflow, the inlet airflow flows directly into the blower. Under certain frequency conditions, high-frequency howling will be generated, making the noise of the blower, especially the sound quality, have a greater impact on the comfort of the passengers in the car, reducing the user's riding comfort.
[0003] Therefore, there is an urgent need to provide an air intake device and a vehicle to solve the problems existing in the prior art to a certain extent. Utility Model Content
[0004] The utility model aims to provide an air intake device and a vehicle, so as to optimize the structure of the air intake device to a certain extent, eliminate high-frequency howling, and improve the riding comfort.
[0005] The utility model provides an air intake device, comprising a silencer mechanism and an air blowing mechanism; the air blowing mechanism forms an air inlet, the silencer mechanism is arranged at the air inlet, the silencer mechanism comprises an outer ring, an inner ring and a plurality of guide blades, the outer ring is coaxially arranged with the inner ring, a plurality of the guide blades are located between the outer ring and the inner ring, a plurality of the guide blades are uniformly distributed circumferentially along the outer ring and the inner ring, one end of the guide blade is connected to the inner ring, and the other end is connected to the outer ring.
[0006] A plurality of notches are formed in the circumferential direction of the inner ring. The plurality of notches are arranged at intervals along the circumferential direction of the inner ring, and the notches are located between two adjacent guide blades.
[0007] Specifically, the chord length of the guide vane gradually increases and then gradually decreases from the outer ring to the inner ring, and the chord length at the middle position of the guide vane is the largest.
[0008] Furthermore, the chord length varies in the range of 4 mm to 15 mm.
[0009] Furthermore, the guide vane is a twisted blade structure.
[0010] Wherein, the diameter of the outer ring is greater than the diameter of the air inlet, and the diameter of the air inlet is A, and the diameter of the outer ring is 1.05A-1.15A.
[0011] Specifically, the diameter of the inner ring is 20 mm-35 mm, and the height of the outer ring is 6 mm-10 mm.
[0012] Furthermore, the air blowing mechanism comprises an upper volute and a lower volute, the upper volute and the lower volute are interlocked to form a flow guide cavity, and the air inlet is formed on the side of the upper volute.
[0013] Furthermore, the blowing mechanism also includes an impeller, and the impeller is arranged in the guide cavity and corresponds to the air inlet.
[0014] Compared with the prior art, the air inlet device provided by the utility model has the following advantages:
[0015] The utility model provides an air inlet device, including a silencer mechanism and an air blowing mechanism; the air blowing mechanism forms an air inlet, the silencer mechanism is arranged at the air inlet, the silencer mechanism includes an outer ring, an inner ring and a plurality of guide blades, the outer ring is coaxially arranged with the inner ring, the plurality of guide blades are located between the outer ring and the inner ring, the plurality of guide blades are uniformly distributed circumferentially along the outer ring and the inner ring, one end of the guide blade is connected to the inner ring, and the other end is connected to the outer ring.
[0016] From this analysis, it can be seen that by setting a silencer mechanism at the air inlet of the blowing mechanism, and the silencer mechanism in this application is composed of an inner ring, an outer ring and multiple guide blades, the guide blades can have a certain guiding effect on the airflow entering from the outside, and then can reduce the high-frequency howling generated when the airflow enters the air inlet to a certain extent, thereby improving the user experience.
[0017] Furthermore, since the inner ring and the outer ring in the present application are coaxially arranged and the multiple guide blades are evenly distributed along the circumference of the outer ring and the inner ring, the gas flow rate and flow direction can be kept uniform and stable during the guide process, thereby further reducing the generation of high-frequency howling and ensuring the user experience.
[0018] In addition, the utility model also provides a vehicle, comprising the above-mentioned air intake device.
[0019] A vehicle using the air intake device provided by the present application can reduce the high-frequency howling caused by the air intake of the blower mechanism when the air conditioner is started and maintained at a certain frequency, thereby reducing the noise inside the vehicle and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A schematic diagram of the overall structure of the air inlet device provided in an embodiment of the utility model;
[0022] Figure 2 A schematic diagram of the structure of a silencer mechanism in an air intake device provided in an embodiment of the utility model;
[0023] Figure 3 A schematic structural diagram of a guide vane of a silencer mechanism in an air intake device provided by an embodiment of the utility model from a first perspective;
[0024] Figure 4 A schematic structural diagram of the guide vanes of the silencer mechanism in the air intake device provided in an embodiment of the utility model from a second perspective.
[0025] In the figure: 1-upper volute; 101-air inlet; 2-lower volute; 3-muffler mechanism; 301-inner ring; 3011-notch; 3012-weight reduction groove; 302-outer ring; 303-guide vane; 4-impeller. DETAILED DESCRIPTION
[0026] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.
[0027] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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 cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only 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.
[0029] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.
[0031] For ease of description, spatial relative terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the drawings. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.
[0032] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.
[0033] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.
[0034] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection required by the present application.
[0035] like Figure 1 Combination Figure 2 As shown, the utility model provides an air intake device, including a silencer mechanism 3 and an air blowing mechanism; the air blowing mechanism forms an air inlet 101, the silencer mechanism 3 is arranged at the air inlet 101, the silencer mechanism 3 includes an outer ring 302, an inner ring 301 and a plurality of guide blades 303, the outer ring 302 is coaxially arranged with the inner ring 301, the plurality of guide blades 303 are located between the outer ring 302 and the inner ring 301, the plurality of guide blades 303 are uniformly distributed circumferentially along the outer ring 302 and the inner ring 301, and one end of the guide blade 303 is connected to the inner ring 301, and the other end is connected to the outer ring 302.
[0036] Compared with the prior art, the air inlet device provided by the utility model has the following advantages:
[0037] The air intake device provided by the utility model is provided with a silencer mechanism 3 at the air inlet 101 of the blowing mechanism, and the silencer mechanism 3 in the present application is composed of an inner ring 301, an outer ring 302 and a plurality of guide blades 303, so that the guide blades 303 can have a certain guiding effect on the airflow entering from the outside, thereby being able to reduce the high-frequency howling generated when the airflow enters the air inlet 101 to a certain extent, thereby improving the user's experience.
[0038] Furthermore, since the inner ring 301 and the outer ring 302 in the present application are coaxially arranged, and the plurality of guide blades 303 are evenly distributed along the circumference of the outer ring 302 and the inner ring 301, the gas flow rate and flow direction can be kept uniform and stable during the guide process, thereby further reducing the generation of high-frequency howling and ensuring the user experience.
[0039] Alternatively, if Figure 1 Combination Figure 2 As shown, in the present application, a plurality of notches 3011 are formed in the circumferential direction of the inner ring 301 . The plurality of notches 3011 are arranged at intervals along the circumferential direction of the inner ring 301 , and the notches 3011 are located between two adjacent guide vanes 303 .
[0040] By forming a plurality of notches 3011 on the circumference of the inner ring 301 and arranging the notches 3011 at intervals in the circumferential direction and between two adjacent guide vanes 303 , the weight of the inner ring 301 can be reduced to a certain extent, thereby reducing the weight of the overall silencer mechanism.
[0041] Further preferably, a weight-reducing groove 3012 is formed on the side of the inner ring 301 facing the air inlet 101 in the present application, and the weight-reducing groove 3012 is in a circular ring shape, thereby further reducing the weight of the inner ring 301 and further reducing the weight of the overall structure.
[0042] It can be understood that the multiple notch portions 3011 in the present application are arranged at equal intervals. Since the multiple guide blades 303 in the present application are evenly distributed along the circumference of the inner ring 301, the distance between the notch portion 3011 and the guide blades 303 on both sides can be made the same, thereby ensuring that the force on the inner ring 301 is uniform, and the strength of the structure is guaranteed while reducing the weight, thereby avoiding the problem of damage to the silencer mechanism to a certain extent.
[0043] Optionally, the number of guide vanes 303 in the present application is 5-9, and as Figure 1 As shown, preferably, the number of the guide blades 303 in the present application is 7, and accordingly, the number of the notch portions 3011 in the present application can be 7, thereby ensuring the structural strength of the inner ring 301 while reducing the weight of the inner ring 301.
[0044] Alternatively, if Figure 3 Combination Figure 4 As shown, the chord length of the guide vane 303 in the present application first gradually increases and then gradually decreases from the outer ring 302 to the inner ring 301 , and the chord length at the middle position of the guide vane 303 is the largest.
[0045] When the impeller 4 is started, the external air flow enters through the air inlet 101, and the closer to the edge, the smaller the air flow. Since the silencer mechanism in the present application includes an inner ring 301 and an outer ring 302, the closer to the inner ring 301 and the outer ring 302, the smaller the air flow. Therefore, the present application maximizes the chord length of the middle position of the guide blade 303, thereby making the guide area of the middle position of the guide blade 303 larger, thereby achieving the function of guiding a larger air flow, while the chord lengths of the positions on both sides corresponding to a smaller air flow are smaller, thereby making the guide area smaller, and while ensuring the guide function, no resistance is generated. Therefore, the guide blade 303 provided in the present application can adapt to the guide operation at various spatial positions and avoid the problem of noise generation to a certain extent.
[0046] Moreover, adopting this design can also improve the fan inlet airflow to a certain extent and reduce the generation of noise.
[0047] Preferably, the chord length in the present application ranges from 4 mm to 15 mm.
[0048] Alternatively, if Figure 3 Combination Figure 4 As shown, the guide vane 303 in the present application is a twisted blade structure.
[0049] The guide blade 303 in the present application is a twisted blade structure and combined with the above-mentioned structural form in which the chord length increases from small to large and then gradually decreases, it can cause a certain pre-rotation in the airflow at the fan inlet, so that the airflow can smoothly enter the blowing mechanism, thereby further reducing the generation of noise and improving the user experience.
[0050] Optionally, the diameter of the outer ring 302 in the present application is greater than the diameter of the air inlet 101, and the diameter of the air inlet 101 is A, and the diameter of the outer ring 302 is 1.05A-1.15A.
[0051] By making the diameter of the outer ring 302 larger than the diameter of the air inlet 101, the outer ring 302 can be stably combined with the upper volute 1, ensuring the stable installation of the overall structure. Preferably, the diameter of the outer ring 302 in the present application is 1.05 times to 1.15 times the diameter of the air inlet 101, so as to ensure stable docking with the air inlet 101.
[0052] Further preferably, the diameter of the inner ring 301 in the present application is 20 mm-35 mm, and the height of the outer ring 302 is 6 mm-10 mm.
[0053] Alternatively, if Figure 1 As shown, the blowing mechanism in the present application includes an upper volute 1 and a lower volute 2 , the upper volute 1 and the lower volute 2 are interlocked to form a flow guide cavity, and an air inlet 101 is formed on the side of the upper volute 1 .
[0054] The upper volute 1 and the lower volute 2 can be buckled to form a guide cavity, so that external air can enter the guide cavity from the air inlet 101 and be discharged at a certain flow rate and direction under the action of the impeller 4 in the guide cavity, thereby achieving the purpose of blowing.
[0055] Preferably, the side wall of the upper volute 1 in the present application is formed with a snap-fitting portion, and the position of the lower volute 2 corresponding to the snap-fitting portion is formed with a matching portion. The snap-fitting portion and the matching portion in the present application can be in the form of a snap and a cam, thereby enabling a quick connection between the upper volute 1 and the lower volute 2.
[0056] It should be noted here that the connection between the clamping part and the fitting part mentioned above in the present application is only for the preliminary positioning of the upper volute 1 and the lower volute 2, and ultimately a fixed connection between the upper volute 1 and the lower volute 2 needs to be achieved through structures such as welding or bolts.
[0057] In addition, the utility model also provides a vehicle, comprising the above-mentioned air intake device.
[0058] A vehicle using the air intake device provided by the present application can reduce the high-frequency howling caused by the air intake of the blower mechanism when the air conditioner is started and maintained at a certain frequency, thereby reducing the noise inside the vehicle and improving the user experience.
[0059] It should be noted here that some of the above-mentioned frequencies in this application refer to the 4th order of the blower impeller in the frequency range of 2000Hz-2600Hz and the air volume in the range of 50m3 / h-160m3 / h during the operation of the vehicle air conditioning, which eliminates the problem of high-frequency howling caused by this and improves the riding comfort.
[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An air inlet device, characterized in that: Including a muffler mechanism and a blower mechanism; The blowing mechanism is formed with an air inlet, and the silencer mechanism is arranged at the air inlet. The silencer mechanism includes an outer ring, an inner ring and a plurality of guide blades. The outer ring is coaxially arranged with the inner ring, and the plurality of guide blades are located between the outer ring and the inner ring. The plurality of guide blades are evenly distributed circumferentially along the outer ring and the inner ring, and one end of the guide blade is connected to the inner ring, and the other end is connected to the outer ring.
2. The air inlet device according to claim 1, characterized in that: A plurality of notches are formed in the circumferential direction of the inner ring. The plurality of notches are arranged at intervals along the circumferential direction of the inner ring, and the notches are located between two adjacent guide blades.
3. The air inlet device according to claim 1, characterized in that: The chord length of the guide vane gradually increases and then gradually decreases from the outer ring to the inner ring, and the chord length at the middle position of the guide vane is the largest.
4. The air inlet device according to claim 3, characterized in that: The chord length varies in the range of 4 mm to 15 mm.
5. The air inlet device according to claim 1, characterized in that: The guide blade is a twisted blade structure.
6. The air inlet device according to claim 1, characterized in that: The diameter of the outer ring is greater than the diameter of the air inlet, and the diameter of the air inlet is A, and the diameter of the outer ring is 1.05A-1.15A.
7. The air inlet device according to claim 1, characterized in that: The diameter of the inner ring is 20mm-35mm, and the height of the outer ring is 6mm-10mm.
8. The air inlet device according to claim 1, characterized in that: The air blowing mechanism comprises an upper volute and a lower volute, the upper volute and the lower volute are buckled together to form a flow guide cavity, and the air inlet is formed on the side of the upper volute.
9. The air inlet device according to claim 8, characterized in that: The air blowing mechanism further includes an impeller, which is disposed in the flow guide cavity and corresponds to the air inlet.
10. A vehicle, characterized in that: The invention comprises the air inlet device according to any one of claims 1 to 9.