CN111396362A - Aircraft nose subassembly, air duct system, fan - Google Patents
Aircraft nose subassembly, air duct system, fan Download PDFInfo
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- CN111396362A CN111396362A CN202010302895.XA CN202010302895A CN111396362A CN 111396362 A CN111396362 A CN 111396362A CN 202010302895 A CN202010302895 A CN 202010302895A CN 111396362 A CN111396362 A CN 111396362A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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Abstract
The invention provides a head assembly, an air duct system and a fan, wherein the head assembly comprises an air outlet duct and air deflectors, the air outlet duct is partitioned into a plurality of air outlet parts by the air deflectors, and the air outlet parts are provided with a first air wall and a second air wall which are arranged oppositely, wherein: the first air wall comprises a first arc-shaped flow guide surface and a first flow outlet surface which is connected to the first arc-shaped flow guide surface along the air flow direction; the second air wall comprises a second arc-shaped flow guide surface and a second flow outlet surface which is connected to the second arc-shaped flow guide surface along the air flow direction; an air outlet gap is formed between the first flow outlet surface and the second flow outlet surface, and along the air flow direction, the extension surfaces of the first arc-shaped flow guide surfaces are intersected with the second flow outlet surface, and the extension surfaces of the second arc-shaped flow guide surfaces are intersected with the first flow outlet surface.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a head assembly, an air duct system and a fan.
Background
In the bladeless fan in the prior art, external air flow is sucked into the fan, the external air flow is changed into high-speed rotating air flow through a power system, the high-speed rotating air flow enters an air outlet assembly in a machine head through a diffusion assembly, and flows out to the outside through an air outlet on the air outlet assembly.
However, the air outlet assembly generally has a left air outlet duct and a right air outlet duct, each air outlet duct is surrounded by two air wall structures which are arranged oppositely, and the air outlet is a gap reserved at the joint of the two air walls. And part of the air flow entering the air outlet duct flows along the inner surface of the air wall, and at the air outlet, the air flows on the air walls at two sides need to be converged towards the air outlet. Because of air-out wind channel length is big, in order to reduce the loss of air current in the air-out wind channel along journey, generally be the arc structure with foretell wind wall structural design, it has arc water conservancy diversion face, when two curved wind walls set up relatively, the air outlet is as follows, be in two confined centre departments, lead to the air current when assembling towards the air outlet, convection phenomenon can appear in the reposition of redundant personnel of partial air current, when the convection current has reduced the air output of bladeless fan air outlet, still bring the problem that noise and user's feelings weaken easily.
Disclosure of Invention
Accordingly, the present invention is directed to solving the above-mentioned problems, thereby providing a head assembly, a duct system, and a fan.
In order to solve the above problems, the present invention provides a head assembly, including an air outlet duct and a plurality of air deflectors, wherein the air outlet duct is divided into a plurality of air outlet portions by the plurality of air deflectors, and the air outlet portions have a first air wall and a second air wall which are arranged opposite to each other, wherein: the first wind wall comprises a first arc-shaped flow guide surface and a first flow outlet surface which is connected with the first arc-shaped flow guide surface along the airflow direction; the second wind wall comprises a second arc-shaped flow guide surface and a second flow outlet surface which is connected with the second arc-shaped flow guide surface along the airflow direction; an air outlet gap is formed between the first outflow surface and the second outflow surface, and along the air flow direction, the extension surface of the first arc-shaped flow guide surface intersects with the second outflow surface, and the extension surface of the second arc-shaped flow guide surface intersects with the first outflow surface.
Further, the first arc-shaped flow guide surface and the second arc-shaped flow guide surface are both configured as arc surfaces.
Further, the first and second arcuate guide surfaces are configured to have different radii of curvature.
Further, the first and second arcuate flow guide surfaces are configured such that one has a radius of curvature at least 4 times greater than the other.
Further, the first outflow surface and the second outflow surface are each configured as a straight surface.
Further, the air outlet gap is configured to be 3 mm.
Furthermore, a first transition flow surface is arranged between the first arc-shaped flow guide surface and the first flow outlet surface, and a second transition flow surface is arranged between the second arc-shaped flow guide surface and the second flow outlet surface.
Furthermore, the air outlet duct is provided with a direct-current air duct arranged along the height direction of the head assembly and a first direction-changing flow channel which is connected to the upper end part of the direct-current air duct along the air flow direction.
Furthermore, an air outlet angle A exists between the air outlet direction of the first diversion flow channel and the horizontal air outlet direction, and the air outlet angle A is [20 degrees, 40 degrees ].
Further, the wind outlet angle a is 30 °.
The invention also provides an air duct system, which comprises any one of the head components; the air inlet assembly is arranged below the power device, and outside air flows into the power device through the air inlet assembly; and the flow guide assembly is covered on the power device, and the air outlet end of the flow guide assembly is connected to the air outlet duct.
Further, the air inlet subassembly includes: the air inlet wall is annular and is provided with a plurality of air inlet structures; the guide plate is arranged in the middle of the air inlet wall, and outside air flows through the guide plate to be deflected and then is guided to the power device; and the flow collecting cover is covered above the guide plate, and the air outlet end of the flow collecting cover is connected to the power device.
Further, the collecting hood is configured in a horn shape.
Further, the flow guide assembly includes: the second diversion flow channel is internally provided with a plurality of diversion blades, and the diversion blades guide the rotary airflow coming out of the power device into straight airflow; and the air inlet end of the diffusion flow channel is sequentially connected to the second diversion flow channel, and the air outlet end of the diffusion flow channel is connected to the air outlet duct.
Furthermore, a first diffusion surface and a second diffusion surface which are arranged oppositely are arranged at the joint of the diffusion flow channel and the air outlet duct, and the first diffusion surface and the second diffusion surface are respectively connected with the first air wall and the second air wall.
Further, the first diffusion surface and the second diffusion surface are configured as arc surfaces arranged in parallel with each other.
The present invention also provides a fan comprising: the handpiece assembly of any of the above; or any of the above described duct systems.
Further, the fan is a bladeless fan.
The technical scheme of the invention has the following advantages:
1. the handpiece assembly comprises an air outlet duct and a plurality of air deflectors, wherein the air outlet duct is divided into a plurality of air outlet parts by the plurality of air deflectors, the air outlet parts are provided with a first air wall and a second air wall which are arranged oppositely, and the air outlet parts are provided with a first air wall and a second air wall which are arranged oppositely, wherein: the first air wall comprises a first arc-shaped flow guide surface and a first flow outlet surface which is connected to the first arc-shaped flow guide surface along the air flow direction; the second air wall comprises a second arc-shaped flow guide surface and a second flow outlet surface which is connected to the second arc-shaped flow guide surface along the air flow direction; an air outlet gap is formed between the first outflow surface and the second outflow surface, and along the air flow direction, the extension surface of the first arc-shaped flow guide surface is intersected with the second outflow surface, and the extension surface of the second arc-shaped flow guide surface is intersected with the first outflow surface.
The air outlet part can effectively ensure that when air flows are led to the air outlet gap, the phenomenon of convection of the air flows flowing through the first air wall and the second air wall when the air flows are converged at the air outlet gap position can be prevented, so that the noise problem caused by air flow disorder is weakened, meanwhile, the air outlet part can enhance the flow collecting effect of the air flows on the first air wall and the second air wall when the air flows are converged at the air outlet gap position, and weaken the flow dividing phenomenon, so that the air flows have enough injection pressure and speed when coming out from the air outlet gap position, the larger the speed and the air pressure of the air flows coming out from the air outlet gap are, the more obvious the entrainment effect on the surrounding air is, the stronger the entrainment effect is, the integral air outlet quantity of the bladeless fan can be increased, and the wind feeling experience of users is enhanced.
2. The first arc-shaped flow guide surface and the second arc-shaped flow guide surface in the nose assembly are both constructed into arc surfaces, the flow guide effect of the arc surfaces is good, the on-way pressure loss of gas in the flow surface motion can be reduced, and compared with other types of curved surface structures, the arc surfaces are mature in processing technology and low in processing cost.
3. The first arc-shaped flow guide surface and the second arc-shaped flow guide surface in the handpiece assembly are constructed to have different arc radiuses. An air outlet gap is formed between the first flow outlet surface and the second flow outlet surface, and along the air flow direction, the extension surfaces of the first arc-shaped flow guide surfaces are intersected with the second flow outlet surface, and the extension surfaces of the second arc-shaped flow guide surfaces are intersected with the first flow outlet surface.
4. The first arc-shaped flow guide surface and the second arc-shaped flow guide surface in the handpiece assembly are constructed in such a way that the radian radius of one of the first arc-shaped flow guide surface and the second arc-shaped flow guide surface is at least 4 times that of the other arc-shaped flow guide surface, so that the intersection point of the extension surface of the first arc-shaped flow guide surface and the second flow outlet surface or the intersection point of the extension surface of the second arc-shaped flow guide surface and the first flow outlet surface can be ensured to be positioned at the air outlet end of the air outlet gap as far as possible, namely the intersection point of the air flows of the first air wall and the second air wall is close to the air outlet end positioned in the air outlet gap, and the problem that the air flows back along the arc surface and then forms convection again.
5. The first outflow surface and the second outflow surface in the handpiece assembly are both constructed into straight surfaces, the planes are easy to process, and the forced turning capability of the air outlet gap formed by clamping the two planes to the air flow is strong, so that the direct current spraying capability of the air flow at the air outlet gap can be improved, and the air flow is prevented from diffusing to the periphery to influence the outflow speed.
6. According to the machine head assembly, the first transition flow surface is arranged between the first arc-shaped flow guide surface and the first flow outlet surface, and the second transition flow surface is arranged between the second arc-shaped flow guide surface and the second flow outlet surface, so that when air flows along the first arc-shaped flow guide surface and the second arc-shaped flow guide surface, the air flow can be smoothly transited to the first flow outlet surface and the second flow outlet surface, and the wind resistance caused by the fault difference at the flow surfaces is reduced.
7. An air outlet angle A exists between the air outlet direction of the first diversion flow channel in the handpiece component and the horizontal air outlet direction, and the air outlet angle A is [20 degrees, 40 degrees ]. The arrangement of the air outlet angle enlarges the maximum air outlet angle at the air outlet at the upper end of the bladeless fan, and compared with the design that the air outlet direction is perpendicular to a user in the prior art, the upper air outlet of the bladeless fan is arranged in an upward inclined angle mode, so that when facing users with different heights, the head of the user can be met as much as possible, an effective air blowing effect can be obtained, and the product experience of the user is improved.
8. The air inlet assembly in the air duct system comprises: the air inlet wall is annular and is provided with a plurality of air inlet structures; the guide plate is arranged in the middle of the air inlet wall, and outside air flow is guided to the power device after being turned by the guide plate; the flow collecting cover is covered above the guide plate, the air outlet end of the flow collecting cover is connected to the power device, the flow collecting cover is in a horn shape, the structural shape of the flow collecting cover can enhance the capacity of collecting outside air flow to increase the air quantity, meanwhile, the position of a contraction port on the flow collecting cover can increase the speed of the air flow, and effective gain can be formed on the final air speed.
9. The first diffusion surface and the second diffusion surface are arranged at the joint of the diffusion flow channel and the air outlet channel in the air channel system and are opposite to each other, the first diffusion surface and the second diffusion surface are respectively connected with the first air wall and the second air wall, the first diffusion surface and the second diffusion surface are constructed into arc surfaces which are arranged in parallel, and the structural characteristics of the first diffusion surface and the second diffusion surface ensure that gas flows smoothly when flowing through the diffusion assembly and the turning angle is small when the gas flows because of the parallel arrangement, so that the pressure loss caused by turning and wall resistance can be effectively reduced, and the final air outlet volume and air pressure are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a transverse cross-sectional view of a handpiece assembly in example 1 provided by the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of the principle of gas flow in example 1 provided by the present invention;
FIG. 4 is a longitudinal cross-sectional view of a handpiece assembly in example 1 provided by the present invention;
FIG. 5 is a schematic view of the wind outlet angle in example 1 of the present invention;
FIG. 6 is a cross-sectional view of a ductal system in example 2 provided by the present invention;
FIG. 7 is a cross-sectional view of an air intake assembly in example 2 of the present invention;
fig. 8 is a sectional view of a bladeless fan according to embodiment 3 of the present invention.
Description of reference numerals:
1-an air outlet duct; 11-a direct current air duct; 12-a first diversion channel;
2-a first wind wall; 21-a first arc-shaped flow guide surface; 22-a first outflow surface; 23-a first transition flow surface;
3-a second wind wall; 31-a second arc-shaped flow guide surface; 32-a second outflow surface; 33-a second transition flow surface;
4-an air intake assembly; 41-air inlet wall; 42-a flow guide plate; 43-a current collecting hood;
5-a power plant;
6-a flow guide assembly; 61-a second diversion channel; 62-a diffusion flow channel; 621-a first diffusion surface; 622-second diffusion surface;
a-wind angle;
a-a gas flow collection point; b-a critical intersection point of the first arc-shaped flow guide surface; c-an extension plane of the first arc-shaped flow guide surface;
7-outer shell.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
Fig. 1 to 5 show, for a head assembly that this embodiment provided, including air-out wind channel 1 and aviation baffle, a plurality of aviation baffles are a plurality of air-out portions with air-out wind channel interval, and air-out portion has first wind wall 2 and second wind wall 3 that relative to each other set up, wherein: the first wind wall 2 comprises a first arc-shaped guide surface 21 and a first outflow surface 22 which is connected to the first arc-shaped guide surface 21 along the airflow direction; the second wind wall 3 comprises a second arc-shaped flow guide surface 31 and a second outflow surface 32 which is connected to the second arc-shaped flow guide surface 31 along the airflow direction; an air outlet gap is formed between the first outflow surface 22 and the second outflow surface 32, and along the airflow flowing direction, the extension surface of the first arc-shaped guide surface 21 intersects with the second outflow surface 32, and the extension surface of the second arc-shaped guide surface 31 intersects with the first outflow surface 22.
The use object of the handpiece assembly in this embodiment is a commonly used bladeless fan, which generally has a circular air outlet frame, and an air outlet duct 1 is arranged in the bladeless fan, the blower of the bladeless fan is arranged at the lower part of the machine, the air outlet duct 1 is arranged at the upper part of the machine, and when the air flow moves from bottom to top, the moving direction needs to be changed so as to be ejected from an air outlet gap toward a user, so an air deflector structure (not shown in the figure) is designed.
The air guide plate structure divides the whole air outlet duct 1 into a plurality of air outlet portions, and in this embodiment, a specific component structure of one air outlet portion is selected for specific explanation, for example, the structures in fig. 1 and fig. 2 show, and fig. 3 explains the principle of airflow flowing in this structural form of this embodiment.
The first wind wall 2 and the second wind wall 3 of the conventional bladeless fan are generally of two symmetrical structures, especially at the first arc-shaped guide surface 21 and the second arc-shaped guide surface 31, and as a result, the intersection points of the airflows at the first wind wall 2 and the second wind wall 3 are caused, as shown at a in fig. 3, two airflows are intersected in an equiangular opposite-rushing manner, and under the reaction force of the opposite-rushing, the airflows are dispersed towards two sides, and the wind-gathering and collecting effects are reduced.
In this embodiment, the first arc-shaped flow guiding surface 21 and the second arc-shaped flow guiding surface 31 are structurally arranged in such a way that the intersection point of the air flow directly falls on the flow wall of the first flow outlet surface 22 or the second flow outlet surface 32, point b shown in fig. 3 is a critical intersection point, and points formed by moving point b toward the outlet direction of the air outlet gap are all protection objects of the embodiment, in fig. 3, taking the first air wall 2 as an example, the intersection point b of the extension surface of the first arc-shaped flow guiding surface 21 and the second flow outlet surface 32 is affected by the structural shape of the arc-shaped flow guiding surface, and in the initial stage of the air flow, as shown in fig. 3, the slope of the flow surface of the first arc-shaped flow guiding surface 21 is larger, the flow rate of the fluid is faster, so that the initial part of the air flow first reaches the second flow outlet surface 32, the flow rate of the first reached air flow is faster, and the area is formed at the intersection point of the flow outlet surface, the second arc-shaped air flow guiding surface 31 reaching along the wall is affected by the pressure, the air flows are collected towards the junction point, so that effective flow collection effect on the air flows is achieved, the junction point is located on the outflow surface, the air flows towards the air outlet of the air outlet gap can be changed forcibly under the influence of the shape of the wall surface, and the problem that partial air flows back to generate vortex when the air flows are symmetrically intersected in the prior art is solved.
Therefore, the air outlet portion in this embodiment is analyzed above, so as to effectively ensure that when the airflow is led to the air outlet gap, the phenomenon of convection when the airflow flowing through the first air wall 2 and the second air wall 3 is converged at the air outlet gap position is prevented, and further, the noise problem caused by airflow disorder is reduced, and meanwhile, the air outlet portion can enhance the flow collecting effect when the airflow on the first air wall 2 and the second air wall 3 is converged at the air outlet gap position, and reduce the shunting phenomenon, so as to ensure that the airflow has sufficient injection pressure and speed when coming out from the air outlet gap position, the larger the speed and the wind pressure of the airflow coming out from the air outlet gap are, the more obvious the entrainment effect on the surrounding air is, the stronger the entrainment effect is, the increase of the overall air output of the bladeless fan can be brought, and the wind sensation experience of users is enhanced.
In this embodiment, the first arc-shaped flow guide surface 21 and the second arc-shaped flow guide surface 31 are both configured as arc surfaces, the flow guide effect of the arc surfaces is good, the on-way pressure loss of gas during the movement of the flow surfaces can be reduced, and the arc surfaces are compared with other types of curved surface structures, the processing technology is mature, and the processing cost is low.
In other embodiments, the first arc-shaped flow guiding surface 21 and the second arc-shaped flow guiding surface 31 may also be other quadric structures, such as a sinusoidal surface, a parabolic surface, a spherical surface, and the like.
In other embodiments, the first arc-shaped flow guide surface 21 and the second arc-shaped flow guide surface 31 may also be two different types of curved surface structures.
In the above, an air outlet gap is formed between the first outflow surface 22 and the second outflow surface 32, and along the airflow flowing direction, the extension surfaces of the first arc-shaped flow guiding surface intersect with the second outflow surface, and the extension surfaces of the second arc-shaped flow guiding surface intersect with the first outflow surface, in order to ensure the above implementation result, in this embodiment, the first arc-shaped flow guiding surface 21 and the second arc-shaped flow guiding surface 31 are configured to have different arc radiuses, and in this embodiment, the arc radius of the first arc-shaped flow guiding surface 21 is smaller than the arc radius of the second arc-shaped flow guiding surface 31.
Further, the radian radius of the first arc-shaped flow guide surface 21 is four times of the radian radius of the second arc-shaped flow guide surface 31, so that the intersection point of the extension surface of the first arc-shaped flow guide surface 21 and the second flow outlet surface 32 or the intersection point of the extension surface of the second arc-shaped flow guide surface 31 and the first flow outlet surface 22 can be ensured to be located at the air outlet end of the air outlet gap as far as possible, that is, the intersection point of the air flows of the first air wall 2 and the second air wall 3 is close to the air outlet end located at the air outlet gap, and the problem that the air flows return along the arc surface and form convection again is prevented as the intersection point is intersected on the first arc-shaped flow guide surface or the second arc-shaped flow guide surface.
In other embodiments, a ratio of the multiples of the arc radius relationship greater than four times is more effective.
As shown in fig. 1 and 2, the first outflow surface 22 and the second outflow surface 32 are each designed as a straight surface. The plane is processed easily, and the forced diversion ability of air-out clearance that two planes press from both sides to establish formation is strong to the air current, can improve the direct current jet capacity of air current in air-out clearance department, prevents that the air current from dispersing to all around and influencing the speed of effluenting.
Further, the air outlet gap in the present embodiment is configured to be 3 mm.
As shown in fig. 3, a first transition flow surface 23 is formed between the first arc-shaped flow guiding surface 21 and the first outflow surface 22, and a second transition flow surface 33 is formed between the second arc-shaped flow guiding surface 31 and the second outflow surface 32, which can realize smooth transition to the first outflow surface 22 and the second outflow surface 32 when the airflow flows along the first arc-shaped flow guiding surface 21 and the second arc-shaped flow guiding surface 31, thereby reducing the wind resistance caused by the difference of the flow surfaces.
As shown in fig. 4 and 5, the air outlet duct 1 in this embodiment has a direct-flow duct 11 disposed along the height direction of the head assembly and a first diversion flow channel 12 connected to the upper end of the direct-flow duct 11 along the air flow direction, and an air outlet angle a exists between the air outlet direction of the first diversion flow channel 12 and the horizontal air outlet direction, the air outlet angle a is [20 °, 40 ° ], the arrangement of the air outlet angle enlarges the maximum air outlet angle at the upper end air inlet of the bladeless fan, compared with the design in the prior art in which the air outlet direction is perpendicular to the user, the upper air outlet of the bladeless fan in this embodiment is set up with an upward inclination angle, so that when facing users with different heights, an effective blowing effect can be obtained by satisfying the head of the user as much as possible, thereby improving the product experience of the user, the air outlet angle a in this embodiment is 30 °, while satisfying the user requirements, the problem of air-out waste caused by too large air-out angle can also be prevented.
Example 2
As shown in fig. 6 to 7, an air duct system provided for the present embodiment includes: the handpiece assembly of embodiment 1 above; the air inlet component 4 is arranged below the power device 5, and outside air flows into the power device 5 through the air inlet component 4; and the flow guide assembly 6 is covered on the power device 5, and the air outlet end of the flow guide assembly is connected to the air outlet duct 1.
Specifically, as shown in fig. 7, the intake assembly 4 includes: the air inlet wall 41 is annular, and is provided with a plurality of air inlet structures, the air inlet structures in this embodiment are circular air inlet holes, and external air flow enters the air duct system through the air inlet holes under the action of negative pressure. Because the initial air inlet direction is basically parallel to the axial direction of the air duct, a plurality of guide plates 42 are arranged in the middle of the air inlet wall 41, the guide plates 42 are vertically arranged and have a plate-shaped structure with a certain air inlet gap, and outside air is guided to the power device 5 after being turned by the guide plates 42; and the flow collecting cover 43 is covered above the guide plate 42, the airflow guided by the guide plate 42 directly flows into the flow collecting cover 43, the air outlet end of the flow collecting cover 43 is connected to the power device 5, and part of functions of the power device 5 are used for providing the negative pressure effect.
As shown in fig. 7, the collecting cover 43 is configured in a trumpet shape, and the collecting cover 43 with this shape can enhance the collecting capability of the outside air flow to increase the air volume, and the position of the contraction opening on the collecting cover 43 can increase the speed of the air flow, which can form an effective gain for the final air speed.
As shown in fig. 6, the airflow guide assembly 6 includes: a second diversion flow passage 61, in which a plurality of diversion blades are formed, the diversion blades guiding the rotary airflow coming out of the power device 5 into straight airflow; and the air inlet end of the diffusion flow channel 62 is connected to the second diversion flow channel 61 in sequence, and the air outlet end of the diffusion flow channel is connected to the air outlet duct 1. The diffusion runner 62 is provided with the first diffusion surface 621 and the second diffusion surface 622 that set up each other relatively with the junction of air-out wind channel 1, and first diffusion surface 621 and second diffusion surface 622 link to each other with first wind wall 2 and second wind wall 3 respectively, and first diffusion surface 621 and second diffusion surface 622 are constructed as the cambered surface of parallel arrangement each other, wherein the structural feature of first diffusion surface 621 and second diffusion surface 622, it is smooth flow and for parallel arrangement has guaranteed that the angle of turning to when the gas flows is little for smooth flow when having guaranteed the gas flow to the diffusion runner, can effectively reduce to turn to and the pressure loss that the wall hinders and bring, thereby guarantee final air-out amount of wind and wind pressure.
Example 3
As shown in fig. 8, the fan provided in this embodiment, specifically a bladeless fan, includes the air duct system in embodiment 2, specifically includes an air outlet duct 1, an air inlet assembly 4, a power device 5, and a corresponding flow guide assembly 6, and has all technical advantages, which are not described herein again.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (18)
1. The utility model provides a head assembly, includes air-out wind channel (1) and aviation baffle, a plurality of the aviation baffle will air-out wind channel interval becomes a plurality of air-out portions, its characterized in that, air-out portion has relative first wind wall (2) and second wind wall (3) that set up each other, wherein:
the first wind wall (2) comprises a first arc-shaped flow guide surface (21) and a first flow outlet surface (22) which is connected with the first arc-shaped flow guide surface (21) along the airflow direction;
the second wind wall (3) comprises a second arc-shaped flow guide surface (31) and a second flow outlet surface (32) which is connected with the second arc-shaped flow guide surface (31) along the airflow direction;
an air outlet gap is formed between the first outflow surface (22) and the second outflow surface (32), and along the air flow direction, the extension surface of the first arc-shaped guide surface (21) is intersected with the second outflow surface (32), and the extension surface of the second arc-shaped guide surface (31) is intersected with the first outflow surface (22).
2. Handpiece assembly according to claim 1, characterized in that the first curved flow-guiding surface (21) and the second curved flow-guiding surface (31) are both configured as circular arc surfaces.
3. The head assembly of claim 2, wherein the first arcuate guide surface (21) and the second arcuate guide surface (31) are configured with different radii of curvature.
4. The head assembly of claim 3, wherein the first arcuate guide surface (21) and the second arcuate guide surface (31) are configured such that one has an arc radius at least 4 times greater than the other.
5. Handpiece assembly according to any of claims 1 to 4, characterized in that the first outflow surface (22) and the second outflow surface (32) are each configured as a flat surface.
6. The head assembly of claim 5, wherein the air exit gap is configured to be 3 mm.
7. Handpiece assembly according to claim 1, wherein a first transition flow surface (23) is provided between the first arched deflector surface (21) and the first outflow surface (22), and a second transition flow surface (33) is provided between the second arched deflector surface (31) and the second outflow surface (32).
8. Handpiece assembly according to any of claims 1 or 6 or 7, wherein the air outlet duct (1) has a straight duct (11) arranged along the height direction of the handpiece assembly and a first diversion channel (12) which is arranged at the upper end of the straight duct (11) and is followed by the air flow direction.
9. The handpiece assembly of claim 8, wherein an air outlet angle A exists between the air outlet direction of the first diversion flow channel (12) and the horizontal air outlet direction, and the air outlet angle A is greater than or equal to 20 degrees and less than or equal to 40 degrees.
10. The head assembly of claim 9, wherein the wind exit angle a is 30 °.
11. An air duct system, comprising:
the handpiece assembly of any one of claims 1-10;
the air inlet component (4) is arranged below the power device (5), and outside air flows into the power device (5) through the air inlet component (4);
and the flow guide assembly (6) is covered on the power device (5), and the air outlet end of the flow guide assembly is connected to the air outlet duct (1).
12. The air duct system according to claim 11, characterized in that the air intake assembly (4) comprises:
the air inlet wall (41) is annular and is provided with a plurality of air inlet structures;
the guide plate (42) is arranged in the middle of the air inlet wall (41), and outside air flows through the guide plate (42) to be turned and then is guided to the power device (5);
and the flow collecting cover (43) is covered above the guide plate (42), and the air outlet end of the flow collecting cover is connected to the power device (5).
13. The air duct system according to claim 12, characterized in that the collecting hood (43) is configured in the shape of a horn.
14. The air duct system according to any of claims 11-13, characterized in that the flow guide assembly (6) comprises:
the second diversion flow channel (61) is internally provided with a plurality of diversion blades, and the diversion blades guide the rotary airflow coming out of the power device (5) into straight airflow;
and the air inlet end of the diffusion flow channel (62) is sequentially connected to the second diversion flow channel (61), and the air outlet end of the diffusion flow channel is connected to the air outlet duct (1).
15. The air duct system according to claim 14, characterized in that a first diffusion surface (621) and a second diffusion surface (622) are disposed opposite to each other at a connection of the diffusion flow channel (62) and the outlet air duct (1), and the first diffusion surface (621) and the second diffusion surface (622) are connected to the first air wall (2) and the second air wall (3), respectively.
16. The air duct system according to claim 15, wherein the first diffusion surface (621) and the second diffusion surface (622) are configured as arc surfaces arranged parallel to each other.
17. A fan, comprising:
the handpiece assembly of any one of claims 1-10;
or the air duct system of any of claims 11-16.
18. The air duct system of claim 17, wherein the fan is a bladeless fan.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302895.XA CN111396362A (en) | 2020-04-16 | 2020-04-16 | Aircraft nose subassembly, air duct system, fan |
| PCT/CN2020/139933 WO2021208497A1 (en) | 2020-04-16 | 2020-12-28 | Head assembly, air duct system, and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302895.XA CN111396362A (en) | 2020-04-16 | 2020-04-16 | Aircraft nose subassembly, air duct system, fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111396362A true CN111396362A (en) | 2020-07-10 |
Family
ID=71435197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010302895.XA Pending CN111396362A (en) | 2020-04-16 | 2020-04-16 | Aircraft nose subassembly, air duct system, fan |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111396362A (en) |
| WO (1) | WO2021208497A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208497A1 (en) * | 2020-04-16 | 2021-10-21 | 珠海格力电器股份有限公司 | Head assembly, air duct system, and fan |
| WO2021208498A1 (en) * | 2020-04-16 | 2021-10-21 | 珠海格力电器股份有限公司 | Vaneless fan nozzle assembly and vaneless fan |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762852B (en) * | 2016-11-15 | 2020-02-04 | 美的集团股份有限公司 | Fan head and bladeless fan |
| CN206290465U (en) * | 2016-12-09 | 2017-06-30 | 美的集团股份有限公司 | Fan head and bladeless fan |
| CN107605813B (en) * | 2017-09-30 | 2019-03-29 | 广东美的环境电器制造有限公司 | Head and bladeless fan for bladeless fan |
| JP2019076017A (en) * | 2017-10-24 | 2019-05-23 | 清水建設株式会社 | Insect discharge device |
| CN111396362A (en) * | 2020-04-16 | 2020-07-10 | 珠海格力电器股份有限公司 | Aircraft nose subassembly, air duct system, fan |
-
2020
- 2020-04-16 CN CN202010302895.XA patent/CN111396362A/en active Pending
- 2020-12-28 WO PCT/CN2020/139933 patent/WO2021208497A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208497A1 (en) * | 2020-04-16 | 2021-10-21 | 珠海格力电器股份有限公司 | Head assembly, air duct system, and fan |
| WO2021208498A1 (en) * | 2020-04-16 | 2021-10-21 | 珠海格力电器股份有限公司 | Vaneless fan nozzle assembly and vaneless fan |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021208497A1 (en) | 2021-10-21 |
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