CN110762822B - Air deflector assembly and air conditioner - Google Patents
Air deflector assembly and air conditioner Download PDFInfo
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- CN110762822B CN110762822B CN201911217623.3A CN201911217623A CN110762822B CN 110762822 B CN110762822 B CN 110762822B CN 201911217623 A CN201911217623 A CN 201911217623A CN 110762822 B CN110762822 B CN 110762822B
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- 238000000034 method Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Abstract
The application discloses an air deflector assembly and an air conditioner, wherein the air deflector assembly comprises an air deflector and an air conditioner wing plate, wherein the air deflector is provided with an air deflector surface; the wing plate is obliquely arranged on the air guide surface through a connecting piece, the wing plate is provided with a front edge, a rear edge, a ventral surface and a rear surface, the ventral surface and the rear surface are both connected with the front edge and the rear edge, an air passing gap is formed between the front edge and the air guide surface, the distance between the front edge and the air guide surface is smaller than the distance between the rear edge and the air guide surface, and the rear surface is located between the ventral surface and the air guide surface. According to the technical scheme, the wing plate is arranged on the air deflector, when air flows along the front edge of the wing plate to the rear edge of the wing plate, vortex is formed at the rear edge of the wing plate, the radius of the vortex is gradually enlarged, and the speed of the vortex is gradually reduced in the subsequent operation process of the formed vortex, so that rapid heat transfer can be realized, the air flow is gently softened, and no wind sense or breeze sense effect is realized.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air deflector assembly and an air conditioner.
Background
In the air conditioner, the air deflector arranged at the air outlet mainly adopts an air deflector with a certain angle with the air supply flow, and the air supply direction is controlled by blocking and guiding.
However, when the air deflector delivers air, the air flow speed is high, and cold air is easy to blow directly, so that discomfort and even cold of users are caused.
The current no wind sense air conditioner is mainly through setting up the micropore on the aviation baffle, through carrying out the step-down acceleration to the air current, makes stranded air current follow micropore blowout, forms many high-speed disturbance sources in the air outlet region, reaches the quick mixing of air outlet air current and environment air current, reaches the reduction air conditioner air-out distance, keeps sufficient refrigerating capacity simultaneously.
Because the wind resistance of the existing microporous air deflector is large, when the air quantity is large, the air flow is limited by the air deflector, and is difficult to flow out of the air deflector rapidly, so that the wind power is wasted, and the requirement of no wind sensation is difficult to be met rapidly.
Disclosure of Invention
The application mainly aims to provide an air deflector assembly, which aims to solve the technical problems of large wind resistance, poor wind sensation-free effect and the like of the conventional microporous air deflector.
In order to solve the above problems, the present disclosure provides an air deflector assembly, including an air deflector, an air deflector support and a wing plate, where the air deflector has an air guiding surface, and a first edge and a second edge located on two opposite sides of the air guiding surface, where the first edge and the second edge extend along a length direction of the air deflector; the air guide support is arranged on the air guide surface, a guide channel for guiding air along the width direction of the air guide plate is formed by enclosing the air guide support and the air guide plate, the air guide support is provided with an air guide plate opposite to the air guide plate, and the air guide plate is provided with an air guide surface facing the air guide surface; the wing plate is arranged in the flow guiding direction of the flow guiding channel, the wing plate is provided with a front edge, a rear edge, a ventral surface, a rear surface and two side surfaces, the ventral surface and the rear surface are connected with the front edge and the rear edge, one side surface faces the flow guiding surface, the other side surface faces the air guiding surface, the front edge faces the first edge, and the rear edge faces the second edge.
In one embodiment, the wing panel is located within the flow channel.
In one embodiment, the wing panel is located outside the flow channel.
In an embodiment, the deflector has a deflector edge facing the second edge, a perpendicular projection of the deflector edge onto the deflector intersecting the wing panel.
In an embodiment, the number of the wing plates is multiple, the wing plates are arranged at intervals along the length direction of the air deflector, and the side surfaces of the wing plates are in fit connection with the air guiding surface.
In an embodiment, the air deflector has opposite ends located in a length direction of the air deflector, the plurality of wing plates include a first wing group and a second wing group, web surfaces of wing plates in the first wing group are all arranged towards one end of the air deflector, web surfaces of wing plates in the second wing group are all arranged towards the other end of the air deflector, and wing plates in the first wing group and wing plates in the second wing group are alternately arranged in the length direction of the air deflector.
In an embodiment, in the two adjacent wing plates disposed opposite to each other on the web surface, a distance between the two front edges is greater than a distance between the two rear edges.
In an embodiment, the number of the wing plates is multiple, the wing plates are arranged along the length direction of the air deflector, and flow guiding gaps are formed between the wing plates and the flow guiding surfaces and between the wing plates and the air guiding surfaces.
In an embodiment, the number of the guide brackets is two, the two guide brackets are arranged at intervals in the length direction of the air deflector, the plurality of wing plates comprise a third wing group and a fourth wing group, and the third wing group and the fourth wing group are arranged in the two guide channels.
In one embodiment, the back surface has an arc length H corresponding to the airfoil section of the wing panel 1 The arc length or the straight line length of the ventral surface corresponding to the airfoil section of the wing plate is H 2 ，H 1 Greater than H 2 。
In an embodiment, the distance from the leading edge to the maximum thickness of the wing panel is less than the distance from the trailing edge to the maximum thickness of the wing panel.
In an embodiment, an angle of attack of the wing plate with respect to a widthwise direction of the wind deflector is not less than 15 ° and not more than 70 °.
In an embodiment, the angle of attack of the wing panel with respect to the deflector is not less than 25 ° and not more than 55 °.
In an embodiment, the chord length of the wing panel is C, the span of the wing panel is L, and the value of C/L is greater than 1.
In one embodiment, the value of C/L is not less than 1.5 and not greater than 4.
In an embodiment, the distance between two adjacent wing plates is D, the wing span of the wing plates is L, and D is not less than 1.3L and not more than 2L.
In an embodiment, the back surface is a cambered surface, and the ventral surface is a plane or a cambered surface.
The application also provides an air conditioner, which is provided with an air outlet, wherein an air deflector assembly is arranged at the air outlet, the air deflector assembly comprises an air deflector, a guide bracket and a wing plate, the air deflector is provided with an air deflector surface, and a first edge and a second edge which are positioned on two opposite sides of the air deflector surface, and the first edge and the second edge extend along the length direction of the air deflector; the air guide support is arranged on the air guide surface, a guide channel for guiding air along the width direction of the air guide plate is formed by enclosing the air guide support and the air guide plate, the air guide support is provided with an air guide plate opposite to the air guide plate, and the air guide plate is provided with an air guide surface facing the air guide surface; the wing plate is arranged in the flow guiding direction of the flow guiding channel, the wing plate is provided with a front edge, a rear edge, a ventral surface, a rear surface and two side surfaces, the ventral surface and the rear surface are connected with the front edge and the rear edge, one side surface faces the flow guiding surface, the other side surface faces the air guiding surface, the front edge faces the first edge, and the rear edge faces the second edge.
According to the technical scheme, the wing plate is arranged on the air deflector, when air flows along the front edge of the wing plate to the rear edge of the wing plate, vortex is formed at the rear edge of the wing plate, the radius of the vortex is gradually enlarged, and the speed of the vortex is gradually reduced in the subsequent operation process of the formed vortex, so that rapid heat transfer can be realized, the air flow is gently softened, and no wind sense or breeze sense effect is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of an air deflection assembly of the present application (as viewed in the direction of airflow);
FIG. 2 is a schematic view of the air deflection assembly of FIG. 1 from another perspective;
FIG. 3 is a schematic view of the air deflection assembly of FIG. 1 from another perspective;
FIG. 4 is a schematic view of the air deflection assembly of FIG. 3 from another perspective;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic view of the structure of the wing plate of FIG. 3;
FIG. 7 is a graph showing the comparison of the back camber line and the ventral camber line of the wing plate of FIG. 6;
FIG. 8 is a graph comparing distances from the leading and trailing edges of the wing panel of FIG. 6 to the maximum thickness of the wing panel;
FIG. 9 is a flow field schematic of an airflow from a leading edge to a trailing edge of an engine wing;
FIG. 10a is a schematic view of an airflow flow field where the airflow flows rearward from the front edge of the engine wing plate; wherein α=15°;
FIG. 10b is a schematic view of an airflow flow field where the airflow flows rearward from the front edge of the engine wing plate; wherein α=25°;
FIG. 10c is a schematic view of an airflow flow field where the airflow flows rearward from the front edge of the wing panel; wherein α=35°;
FIG. 10d is a schematic view of an airflow flow field where the airflow flows rearward from the front edge of the wing plate; wherein α=45°;
FIG. 10e is a schematic view of an airflow flow field where the airflow flows rearward from the front edge of the engine wing plate; wherein α=55°;
FIG. 10f is a schematic view of an airflow flow field where the airflow flows rearward from the front edge of the engine wing plate; wherein α=60°;
FIG. 10g is a schematic view of an airflow flow field where the airflow flows rearward from the front edge of the engine wing plate; wherein α=65°;
FIG. 10h is a graph showing the flow vorticity contour surface of the airflow flowing backward from the front edge of the wing plate; wherein α=70°;
FIG. 11a is a graph showing the flow vorticity contour profile of a flow flowing backward from the leading edge of the wing plate; wherein α=15°;
FIG. 11b is a graph showing the flow vorticity contour profile of a flow flowing backward from the leading edge of the wing plate; wherein α=25°;
FIG. 11c is a graph showing the flow vorticity contour profile of a flow flowing backward from the leading edge of the wing panel; wherein α=35°;
FIG. 11d is a graph showing the flow vorticity contour profile of a flow flowing backward from the leading edge of the wing plate; wherein α=45°;
FIG. 11e is a graph showing the flow vorticity contour profile of a flow flowing backward from the leading edge of the wing panel; wherein α=55°;
FIG. 11f is a graph showing the flow vorticity contour profile of a flow flowing backward from the leading edge of the wing panel; wherein α=60°;
FIG. 11g is a graph showing the flow vorticity contour surface of an airflow flowing backward from the front edge of the wing plate; wherein α=65°;
FIG. 11h is a graph showing the flow vorticity contour surface of the airflow flowing backward from the front edge of the wing plate; wherein α=70°; the method comprises the steps of carrying out a first treatment on the surface of the
FIG. 12 is a schematic view of an airflow flow field in which the airflow flows rearward from the front edge of the engine wing plate; wherein C/l=2;
FIG. 13 is a schematic view of an airflow flow field in which the airflow flows rearward from the front edge of the engine wing plate; wherein C/l=5;
FIG. 14 is a schematic view of an airflow flow field in which the airflow flows rearward from the front edge of the engine wing plate; wherein C/l=10;
FIG. 15 is a schematic flow diagram of an airflow at the trailing edge of a wing panel; wherein C/l=3, 2, 1.5;
FIG. 16 is a schematic flow diagram of an airflow through a plurality of engine wings in the present application; wherein, because the D/L value is smaller, the vortex generated by two adjacent wing plates is intersected;
FIG. 17 is a schematic flow diagram of an airflow through a plurality of engine flaps of the present application; the D/L value is proper, and vortex generated by two adjacent wing plates does not meet;
FIG. 18 is a schematic flow diagram of an airflow through a plurality of engine wings in the present application; where the D/L values are appropriate, the vortices produced by adjacent wing panels do not meet.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Air deflector assembly | 11 | Air deflector |
| 12 | Wing plate of machine | 13 | Connecting piece |
| 14 | Diversion bracket | 11a | Air guiding surface |
| 11b | Leeward surface | 12c | Side surface |
| 121 | Leading edge | 122 | Trailing edge |
| 12a | Ventral surface | 12b | Back surface |
| 140 | Air passage | 141 | Flow guiding surface |
| 14a | Deflector plate |
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
The application provides an air deflector assembly and an air conditioner comprising the same.
Referring to fig. 1 to 6, the air deflection assembly includes an air deflection 11, a guide bracket 14 and a wing plate 12, wherein the air deflection 11 has an air deflection surface 11a, and a first edge 111 and a second edge 112 located at two opposite sides of the air deflection surface 11a, and the first edge 111 and the second edge 112 extend along the length direction of the air deflection 11; the air guiding bracket 14 is mounted on the air guiding surface 11a, an air guiding channel 140 for guiding air along the width direction of the air guiding plate 11 is formed by enclosing the air guiding bracket 14 and the air guiding plate 11, the air guiding bracket 14 is provided with an air guiding plate 14a opposite to the air guiding plate 11, and the air guiding plate 14a is provided with an air guiding surface 141 facing the air guiding surface 11 a; the wing plate 12 is mounted on the flow guiding direction of the flow guiding channel 140, the wing plate 12 has a front edge 121, a rear edge 122, a ventral surface 12a, a rear surface 12b and two side surfaces 12c, wherein the ventral surface 12a and the rear surface 12b are connected to the front edge 121 and the rear edge 122, one side surface 12c faces the flow guiding surface 141, the other side surface 12c faces the air guiding surface 11a, the front edge 121 faces the first edge 111, and the rear edge 122 faces the second edge 112.
The air guide plate 11 has a substantially square plate-like structure, and the air guide plate 11 itself has a first side and a second side which extend in the longitudinal direction thereof and are provided opposite to each other, and the air guide plate 11 further has a leeward surface 11b (the leeward surface 11b also has an air guide function when a certain angle is provided) opposite to the air guide surface 11 a. Of course, the air deflector 11 may have a certain curvature, for example, the air guiding surface 11a may have a certain concave curvature, and the leeward surface 11b may also have a certain curvature.
Referring to fig. 6 to 9, the wing panel 12 is similar in structure to the wing of an aircraft as the name implies. The leading edge 121 of the wing panel 12 refers to the front edge of the wing panel 12 when facing the wind, and the trailing edge 122 refers to the machineThe trailing edge of the wing panel 12 when facing the wind, i.e. the wing panel 12 when facing the wind, flows from the leading edge 121 to the trailing edge 122. For this airfoil section, the aft arc length of the wing panel 12 (the arc length extending from the leading edge 121 along the aft face 12b to the trailing edge 122) is greater than the straight or arc length of the ventral face 12a of the wing panel 12. For the wing panel 12, the wing panel 12 itself also has two sides 12c between the ventral 12a and dorsal 12b sides, with the span L referring to the spacing between the opposite sides of the wing panel 12 (for uniform spacing between the sides 12 c). The chord length C refers to the linear distance between the leading edge 121 and the trailing edge 122. Distance L of the leading edge 121 from the maximum thickness of the wing panel 12 1 Less than the distance L at the maximum thickness of the trailing edge 122 from the wing panel 12 2 . The back surface 12b may be a curved surface, and the web surface 12a may be a flat surface or a curved surface.
For installation of the wing plates 12, the number of the wing plates 12 is plural, and the plurality of wing plates 12 are arranged at intervals along the length direction of the wind deflector 11.
The wing plate 12 may be attached to the air guide surface 11a or attached to the air guide surface 141 (the side surface 12c of the wing plate 12 is bonded to the air guide surface 11 a/the air guide surface 141); the wing plate 12 may be connected to the air guiding surface 141 and/or the air guiding surface 11a by a connector, so that a guiding gap is formed between the wing plate 12 and both the air guiding surface 141 and the air guiding surface 11 a.
For the position of the wing plate 12, the wing plate 12 may be disposed in the flow guiding channel 140, or may be disposed outside the flow guiding channel 140, or may be a part of the wing plate 12 is disposed in the flow guiding channel 140, and a part of the wing plate 12 is disposed outside the flow guiding channel 140, so long as the wing plate 12 is disposed in the flow guiding direction of the flow guiding channel 140.
For the wing plate 12 to be partially located in the flow guiding channel 140 and partially located outside the flow guiding channel 140, it can be understood that: the baffle 14a has a baffle edge 142 facing the second edge 112, the perpendicular projection of the baffle edge 142 onto the baffle 14a intersecting the wing panel 12.
In an embodiment, referring to fig. 1 to 5, the wing plates 12 are mounted on the wind guiding surface 11a, the wind guiding plate 11 has opposite ends in the length direction thereof, and the plurality of wing plates 12 includes a first wing group (not shown in the figure) and a second wing group (not shown in the figure), the web surfaces 12a of the wing plates 12 in the first wing group are all disposed toward one end of the wind guiding plate 11, the web surfaces 12a of the wing plates 12 in the second wing group are all disposed toward the other end of the wind guiding plate 11, and the wing plates 12 in the first wing group and the wing plates 12 in the second wing group are alternately disposed in the length direction of the wind guiding plate 11.
In the two adjacent wing plates 12 disposed opposite to each other on the ventral surface 12a, the distance between the two front edges 121 is greater than the distance between the two rear edges 122.
Since the wing panels 12 are mounted against the air deflector 11, each wing panel 12 will form a swirling air flow only on its side remote from the air deflector 11. In the two wing groups (the ventral surfaces are opposite) which are alternately arranged, on the one hand, the flow velocity of the air flow passing between the two wing plates 12 can be locally increased, so that the vortex effect is increased.
In addition, the angle between the two wing plates 12 opposite to the web surface 12a should not be too large or too small. The included angle is too large, so that the vortex quantity of vortex is influenced; the included angle is too small, which is unfavorable for the increase of vortex. In the present embodiment, the included angle between the two wing plates 12 of the adjacent two wing plates 12 opposing the web surface 12a is not less than 10 ° and not more than 165 °. Preferably, the included angle is between 45 and 75 degrees. Here, the angle is an angle formed by chord planes of the two wing plates 12.
Further, the number of the guide brackets 14 is two, two guide brackets 14 are disposed at intervals in the length direction of the air deflector 11, the plurality of wing plates 12 includes a third wing group and a fourth wing group, and the third wing group and the fourth wing group are disposed in the two guide channels 140.
For an air conditioner, the wind speed of an air outlet is approximately 0.5 m/s-4 m/s, and for example, the wind speed can be reduced to approximately 0 after the air is guided by a common plate-shaped air guide plate and passes a distance of about 5 m. After passing through the air deflector assembly, the air speed can be reduced to be approximately 0 after passing through the distance of about 2.5m, the blown air flow and indoor air exchange heat fully within the range from the air outlet to the air flow blowing out by 2m, and almost no wind sensation exists outside 2 m.
Referring to fig. 9 and 10a, when the airflow is blown along the width direction of the wind deflector 11, part of the airflow forms a spiral wake with respect to the wing due to the fact that part of the airflow passes from the ventral surface 12a to the dorsal surface 12b and part of the airflow passes from the leading edge 121 to the trailing edge 122. That is, the airflow is straight when flowing through the air deflector 11, and a plurality of vortex wake flows can be formed after being guided by a plurality of wing plates 12, so that the mass and heat transfer effect is enhanced, and the convection heat exchange capacity is improved; the travel of the air flow is reduced on the premise of not reducing the heat exchange quantity; strong convection and strong heat exchange are realized in a range close to the air outlet, and the effect of soft wind sensation can be realized in a slightly far range.
For the problem of the incidence angle of the wing plate, a simulation experiment is carried out under various angles by the wing plate, wherein in the simulation experiment, the condition of double-side vortex is simulated in consideration of the fact that the single-side vortex quantity is difficult to measure.
Referring to fig. 10a to 11h, it can be seen that the vortex strength is weak when α=15°, the vortex is significantly changed when α=70°, and the degree of tip vortex is weak. The wing tip vortex condition is relatively ideal when alpha is 15-70 degrees, and the value range of the proper attack angle alpha can be judged to be 15-70 degrees according to numerical simulation
Referring to fig. 10a to 10h, the vortex strength is strong in the range of α=15° to α=55°, except that the influence range of the vortex wake is small when α=15° and α=25° is not beneficial to the rotation of the rear air. The vortex situation changes significantly when α=70°, with weak wingtip vortex. The wingtip vortex situation is ideal when α=25° to α=55°.
But merely by virtue of the streamline distribution is not sufficient to judge the effect of alpha on vortex wake. The vorticity is a physical quantity reflecting the intensity of vortex, and the distribution of the equivalent surface of the vorticity around the wing is shown in fig. 11a to 11 h.
When the angles of attack α=15° and α=25°, the vortex cores (solid portions on both sides of the wing plate in fig. 11a to 11 h) of the vortex wake are the largest in length. However, as can be seen from the streamline distribution in fig. 10a to 10h, the wake flow influence range is relatively small due to the small attack angle α, so that the angle is suitable for the use situations of long-distance air supply and heat exchange efficiency enhancement. In the range of α=35° to α=55°, the vortex flow distribution is similar, and the larger the angle of attack α is, the stronger the ability to break up the incoming flow, so that it is considered that the effect of fluidizing the gas into the vortex wake is best when α=55°. The angle of attack of α=35° to α=55° is suitable for the design requirement of shorter distance air supply and soft wind feeling. When the attack angle α is too large, the raised wing plate 12 blocks the wind channel to affect the incoming wind volume, and when α=60° the vortex flow distribution range is reduced, and when α=70° the vortex flow distribution is already small, so comprehensive analysis considers that α >70 ° no vortex wake can be generated any more.
According to the technical scheme, the wing plates 12 are arranged on the air deflector 11, when air flows along the front edge 121 of the wing plates 12 to the rear edge 122 of the wing plates 12, vortex is formed at the rear edge 122 of the wing plates 12, the radius of the vortex is gradually enlarged, and the vortex speed is gradually reduced in the subsequent operation process, so that rapid heat transfer can be realized, the air flow is gentle, and no-wind effect or a slight-wind effect is realized.
In the above embodiment, referring to fig. 1 to 5, the number of the wing plates 12 may be one, and of course, in order to achieve better flow guiding effect, the number of the wing plates 12 is plural, and the plural wing plates 12 are arranged at intervals along the length direction of the air deflector 11. For example, the number of wing panels 12 may be 5 to 12.
In order to facilitate the arrangement of the wing plates 12 on the wind deflector 11, in another preferred embodiment, the length of the wind deflector 11 is S, the distance between two adjacent wing plates 12 is D, and the span of the wing plates 12 is L, where S is an integer multiple of the sum of D and L.
When the air is blown out along the width direction of the air guide plate 11 during air guiding, and when the air flows from the front edge 121 to the rear edge 122 along the back surface 12b and the ventral surface 12a, the air flow mainly forms vortex on the rear edge 122 and near the two side surfaces of the wing plate 12, so that, relatively speaking, if the wing span of the wing plate 12 is longer, the distance between the two adjacent vortices is larger. With continued reference to fig. 12, 13, 14 and 15, in order to generate more swirl in the air flow passing through the air deflection assembly 10, in this embodiment the chord length of the wing panel 12 is C and the span of the wing panel 12 is L, C/L > 1.
In fig. 12, C/l=2, C/l=4 in fig. 13, C/l=10 in fig. 14, and C/l=3, 2, and 1.5 in fig. 15, it can be seen from these three figures that when C/l=4, the two vortices at the rear edge of the wing plate almost contact together, so that C/L continues to rise, and the two vortices interfere with each other, thereby affecting mass transfer and subsequent heat exchange. In this example, 1.5.ltoreq.C/L.ltoreq.4.
As the airflow blows across the adjacent two wing panels 12, the tips of the tails (the ends of the trailing edges 122) of the adjacent two wing panels 12 will both form vortices, the radii of which will become increasingly larger as the vortices flow away from the wing panels 12,
in this embodiment, referring to fig. 16 and 17, if the two wings are too close together, the vortices generated by the adjacent two wing tips (the two tips of the trailing edge 122 of the wing plate 12) are prone to interference. If too far apart, more airflow does not flow past the tips, reducing the overall swirling effect. The best effect is that the vortex generated by two adjacent wing tips is just close at a far distance and does not want to intersect.
Therefore, the interval between the adjacent two wing plates 12 is not necessarily too small. In addition, if the space between the two wing plates 12 is too large, the blown swirling airflow is relatively loose, which is unfavorable for mass transfer and heat exchange. The distance between two adjacent wing plates 12 is D, and D is more than or equal to 1.3L and less than or equal to 2L.
The size of the wing panel 12 should not be too large or too small, and if too large, the wind resistance is large, and the air output is affected; if too small, the swirling effect formed by the rear edge 122 of the wing panel 12 is poor. Considering the size of the air outlet of the air conditioner (the width of the air deflector is generally 60-120 mm), considering the movement (on and off) of the air deflector, the chord length Cmax of the wing plate 12 is required to be controlled within 80mm for preventing interference. The chord length C of the wing panel 12 is small, which is disadvantageous for formation of large-scale wingtip vortex, and therefore the limit minimum value is 20mm. Because the vortex is mainly generated on the wing tip, the too long wing span is not beneficial to the enhancement of the vortex, and the too short two wing tip vortices interfere and are also not beneficial to the generation of the vortex.
In the present embodiment, the wing panel 12 has a span L ranging from 10mm to 50mm, preferably 25mm to 40mm.
For wing panels 12 having a span in the range 25mm to 40mm, 1.5C/L4 is required. The chord length of the wing panel 12 is also not too long, so that the chord length C of the wing panel 12 can be further controlled between 40mm and 60mm on the basis of the ratio.
The above embodiments have been described with respect to both the post-like connector 13 and the sheet-like connector 13, and in this embodiment, the connector 13 will be further described.
For the columnar connectors 13 (the embodiment of the columnar connectors 13 is not shown in the figure), after the air flows pass through the columnar connectors 13, each columnar connector forms a pair of vortex streets, and then continues to propagate forward, and the blown air flow has a karman vortex street effect, so that the air can be quickly mixed with indoor air, and the heat exchange mixed flow effect is further improved. Therefore, the columnar connector 13 is provided at a position close to the leading edge 121, and the space between the vortex street and the vortex can be widened to avoid interference between the vortex street and the vortex. In addition, the area between the adjacent two vortices is less affected by the air flow (air blow-through) before the radius of the adjacent two vortices expands and meets, so if the location where the cylindrical connecting piece 13 connects the back surface 12b is located at the perpendicular bisector of the span, the blank space between the adjacent two vortices can be exactly compensated.
Referring to fig. 2 and 3, for the sheet-like connection member 13, since the structure has a certain division effect on the airflow, the vortex formation (the formation of vortex in advance is unfavorable for the formation of vortex at the rear edge 122 of the wing plate 12, and the vortex may be rushed to vortex) can be greatly reduced, so that the sheet-like connection member 13 is disposed at a position close to the front edge 121, which can play a role in rectifying the airflow, and the vortex phenomenon of the subsequent airflow is greatly reduced when the airflow flows through the wing plate 12. If the position of the sheet-like connection 13 is on the midspan of the span, the radius and flow rate of the vortex formed by the two trailing tips of the trailing edge 122 of the wing panel 12 can be maintained uniform and the overall mass and heat transfer more uniform.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structural changes made by the description of the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the application.
Claims (13)
1. An air deflection assembly, comprising:
the air deflector is provided with an air deflector surface, and a first edge and a second edge which are positioned on two opposite sides of the air deflector surface, wherein the first edge and the second edge extend along the length direction of the air deflector;
the air guide support is arranged on the air guide surface, a guide channel for guiding air along the width direction of the air guide plate is formed by surrounding the air guide support and the air guide plate, the air guide support is provided with an air guide plate opposite to the air guide plate, and the air guide plate is provided with an air guide surface facing the air guide surface;
the wing plate is arranged in the flow guiding direction of the flow guiding channel, and is provided with a front edge, a rear edge, a ventral surface, a back surface and two side surfaces, wherein the ventral surface and the back surface are connected with the front edge and the rear edge, one side surface faces the flow guiding surface, the other side surface faces the air guiding surface, the front edge faces the first edge, and the rear edge faces the second edge; the number of the wing plates is multiple, the wing plates are arranged at intervals along the length direction of the air deflector, and the side surfaces of the wing plates are in fit connection with the air guiding surface; the back surface is an arc surface, and the ventral surface is a plane or an arc surface;
the arc length of the back surface corresponding to the airfoil section of the wing plate is H 1 The arc length or the straight line length of the ventral surface corresponding to the airfoil section of the wing plate is H 2 ，H 1 Greater than H 2 ；
The distance between the front edge and the maximum thickness of the wing plate is smaller than the distance between the rear edge and the maximum thickness of the wing plate;
the incidence angle of the wing plate relative to the width direction of the air deflector is not less than 15 degrees and not more than 70 degrees.
2. The air deflection assembly of claim 1, wherein the wing plates are positioned within the deflection channels.
3. The air deflection assembly of claim 1, wherein the wing plates are located outside of the flow channels.
4. The air deflection assembly of claim 1, wherein the deflector has a deflector edge facing the second edge, a perpendicular projection of the deflector edge onto the deflector intersecting the wing panel.
5. The air deflection assembly of claim 1, wherein the air deflection has opposite ends in a length direction thereof, wherein the plurality of wing panels comprises a first wing group and a second wing group, wherein a ventral surface of the wing panels in the first wing group is disposed toward one end of the air deflection, wherein a ventral surface of the wing panels in the second wing group is disposed toward the other end of the air deflection, and wherein the wing panels in the first wing group and the wing panels in the second wing group are alternately disposed in the length direction of the air deflection.
6. The air deflection assembly of claim 5, wherein the web is disposed opposite adjacent wing panels, and wherein the leading edges are spaced apart more than the trailing edges.
7. The air deflection assembly of claim 1, wherein the number of wing panels is a plurality, wherein the plurality of wing panels are aligned along the length of the air deflection, and wherein a flow gap is defined between the wing panels and both the flow guiding surface and the air guiding surface.
8. The air deflection assembly of claim 1, wherein the number of air deflection brackets is two, the two air deflection brackets are spaced apart in a longitudinal direction of the air deflection, the plurality of wing panels comprises a third wing group and a fourth wing group, and the third wing group and the fourth wing group are disposed in the two air deflection channels.
9. The air deflection assembly of claim 7, wherein the wing plates have an angle of attack with respect to the air deflection of not less than 25 ° and not more than 55 °.
10. The air deflection assembly of claim 1, wherein the wing panels have a chord length C, and wherein the wing panels have a span L, and wherein the value of C/L is greater than 1.
11. The air deflection assembly of claim 10, wherein the C/L has a value of not less than 1.5 and not greater than 4.
12. The air deflection assembly of claim 1, wherein the spacing between adjacent ones of the wing panels is D, wherein the wing panels have a span of L, and wherein D is not less than 1.3L and not greater than 2L.
13. An air conditioner having an air outlet, wherein the air outlet is provided with the air deflection assembly of any one of claims 1 to 12.
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| CN201911217623.3A CN110762822B (en) | 2019-11-29 | 2019-11-29 | Air deflector assembly and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911217623.3A CN110762822B (en) | 2019-11-29 | 2019-11-29 | Air deflector assembly and air conditioner |
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| CN110762822A (en) | 2020-02-07 |
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