CN114963328A - Wall-mounted air conditioner indoor unit - Google Patents
Wall-mounted air conditioner indoor unit Download PDFInfo
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- CN114963328A CN114963328A CN202110188988.9A CN202110188988A CN114963328A CN 114963328 A CN114963328 A CN 114963328A CN 202110188988 A CN202110188988 A CN 202110188988A CN 114963328 A CN114963328 A CN 114963328A
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- 238000005452 bending Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 26
- 238000004378 air conditioning Methods 0.000 description 18
- 239000012530 fluid Substances 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 13
- 238000005057 refrigeration Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 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
- 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
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
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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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- 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
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/1413—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using more than one tilting member, e.g. with several pivoting blades
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
- Duct Arrangements (AREA)
Abstract
The invention provides a wall-mounted air conditioner indoor unit, which comprises: a housing provided with an air outlet opening forward and downward; the air duct comprises a front air duct wall and a rear air duct wall which are arranged at intervals in the front-back direction, and the outlet ends of the front air duct wall and the rear air duct wall are respectively connected with the upper end and the lower end of the air outlet so as to guide the air flow of the shell to the air outlet; and the rear air duct wall comprises a main body section and a turning section, wherein the turning section is connected with the air outlet end of the main body section and bends and extends downwards compared with the main body section, so that the air flow flows out of the main body section and then bends and flows downwards along the turning section. The invention strengthens the down-blowing effect of the wall-mounted air conditioner indoor unit, and leads the down-blowing direction to be closer to the vertical direction.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a wall-mounted air conditioner indoor unit.
Background
When the air conditioner operates in a refrigeration mode, the cold air tends to sink due to relatively high density; when the air conditioner operates in a heating mode, the hot air density is relatively small and tends to rise. Therefore, the air conditioner needs to blow cold air upwards as much as possible during refrigeration, and needs to blow hot air towards the ground as much as possible during heating, so that the cold air or the hot air is diffused more uniformly in the indoor space, the refrigeration and heating speed is higher, the refrigeration and heating effects are better, and the cold and hot feelings of users are better.
The existing various wall-mounted air-conditioning indoor units are generally only provided with an air outlet which is opened towards the front lower part, and various air guide structures such as an air guide plate, a swing blade and the like are utilized to guide the air outlet direction of air supply airflow so as to realize upward air blowing or downward air blowing. However, the current wind guiding structures have limited wind guiding angles, and only can supply wind obliquely upwards or obliquely downwards, and cold wind or hot wind still cannot reach a roof or a floor area, so that the cooling or heating effect is influenced.
Disclosure of Invention
The object of the present invention is to provide a wall-mounted air conditioning indoor unit that overcomes or at least partially solves the above-mentioned problems.
The invention aims to strengthen the down-blowing effect of the wall-mounted air conditioner indoor unit and enable the down-blowing direction to be closer to the vertical direction.
In particular, the present invention provides a wall-mounted air conditioning indoor unit, comprising:
a housing provided with an air outlet opening forward and downward;
the air duct comprises a front air duct wall and a rear air duct wall which are arranged at intervals in the front-rear direction, and the outlet ends of the front air duct wall and the rear air duct wall are respectively connected with the upper end and the lower end of the air outlet so as to guide the airflow of the shell to the air outlet; and is
The rear air duct wall comprises a main body section and a turning section, wherein the turning section is connected with the air outlet end of the main body section and bends and extends downwards compared with the main body section, so that the air flow flows out of the main body section and then flows downwards along the turning section in a bending way.
Optionally, the turning section is an inward concave arc, and an axis of the arc is parallel to a transverse direction of the air outlet.
Optionally, the included angle between the air inlet direction of the turning section and the air outlet direction of the main body section is 25-35 degrees.
Optionally, an included angle between the air outlet direction of the turning section and the air outlet direction of the main body section is between 5 ° and 15 °.
Optionally, a portion of the main body section, which is connected to the turning section, is also in a shape of a concave arc, an axis of the main body section is parallel to a transverse direction of the air outlet, and a ratio of a diameter of the main body section to a diameter of the turning section is between 2 and 3.
Optionally, the turning section is connected with the bottom wall of the shell through a convex protruding section.
Optionally, a circular arc transition section is arranged between the main body section and the turning section.
Optionally, the front air duct wall comprises a first section extending from the front upper part to the rear lower part and a second section extending from the lower end of the first section to the upper end of the air outlet; and the second section is in a convex arc shape, and the axis of the second section is parallel to the transverse direction of the air outlet.
Optionally, an included angle between the air outlet direction and the air inlet direction of the second section is less than 45 °.
Optionally, the wall-mounted air conditioner indoor unit further includes an air deflector, and the air deflector includes:
the air deflector body is rotatably arranged at the air outlet;
the multilayer inner air deflector is arranged on the inner side of the air deflector body and is sequentially fixed on the air deflector body at intervals along the direction far away from the inner surface of the air deflector body so as to guide air flow together with the air deflector body.
In the wall-mounted air conditioner indoor unit, the air duct comprises a front air duct wall and a rear air duct wall which are arranged at intervals in the front-rear direction, so that the rear air duct wall comprises a main body section and a turning section, and the turning section is connected with the air outlet end of the main body section and bends and extends downwards compared with the main body section, so that airflow flows out of the main body section and then bends and flows downwards along the turning section. According to the coanda effect, when there is surface friction (also called fluid viscosity) between a fluid and the surface of an object over which it flows, the fluid will follow the surface of the object as long as the curvature is not large. Thus, although the direction of the turning section is turned at an angle downwards compared to the main body section, the airflow will continue along the surface of the turning section. Therefore, the air outlet direction of the airflow has a downward turning, so that the airflow is closer to a vertical downward direction, and the airflow is more beneficial to directly reaching the ground. Especially when the air conditioner heats, can realize warm foot experience through blowing downwards.
Furthermore, in the wall-mounted air conditioner indoor unit, the shape of the turning section, the shape of the main body section, important dimensions and angle parameters are specially limited, so that the optimal 'wind direction turning' effect can be realized. Namely, even if the bending angle of the turning section is larger, the wind direction turning angle is larger and is closer to the vertical direction; meanwhile, a strong enough wall attachment effect is ensured, so that the phenomenon that the airflow cannot be well attached to the surface of the turning section due to too large bending angle of the turning section is avoided, and the total amount of the airflow finally completing the turning is too small.
Further, the inventor of the present invention found that if the turning section is configured as an outer convex surface or a plane, the coanda effect is also provided, but when the angle of the turning section is larger, the airflow is easier to separate from the surface, and the airflow finally bent and turned becomes smaller. Based on this knowledge, the inventor designs the turning section as a concave arc shape, and the air flow main body section has a larger angle turning direction when entering the turning section initially, which is called as the initial turning angle. The air flow is gradually relaxed along the concave cambered surface, so that the turning degree is gradually reduced, and finally, the included angle (called as the final turning angle) between the air outlet direction from the outlet end of the bending section and the air outlet direction of the main body section is smaller than the initial turning angle. In a word, the invention utilizes the concave arc surface of the turning section to buffer the turned air flow to a certain extent, so that the wall attachment effect is better, and the air flow of the wall attachment is more.
Furthermore, the invention makes the included angle between the air inlet direction of the turning section and the air outlet direction of the main body section between 25 degrees and 35 degrees, and makes the included angle between the air outlet direction of the turning section and the air outlet direction of the main body section between 5 degrees and 15 degrees, so as to strengthen the above effects, and make the wind direction turning have consideration to both the angle and the air quantity.
Furthermore, in the wall-mounted air conditioner indoor unit, the turning section is connected with the bottom wall of the shell through the convex protruding section, so that the air supply airflow flows out of the turning section and then flows out of the air outlet along the protruding section by virtue of the wall attachment effect to further turn downwards, and the air outlet direction is closer to the vertical direction.
Furthermore, in the wall-mounted air conditioner indoor unit, the front air duct wall comprises a first section extending from the front upper part to the rear lower part and a second section extending from the lower end of the first section to the upper end of the air outlet forwards, and the second section is in an arc shape protruding outwards, so that airflow on the surface of the front air duct wall gradually rises along the second section, the rising angle of the supplied airflow is larger, and the rising angle of the airflow is favorably improved when the air conditioner performs refrigeration and upwind blowing.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic cross-sectional view of a wall-mounted air conditioning indoor unit according to an embodiment of the present invention;
fig. 2 is a schematic view showing the structure of an outlet portion of a duct in the wall-mounted air conditioning indoor unit of fig. 1;
FIG. 3 is an angled schematic illustration of the air chute of FIG. 2;
fig. 4 is a schematic view illustrating a state where the wall-mounted air conditioner indoor unit of fig. 1 is operated in a cooling mode;
fig. 5 is a schematic view illustrating a state where the wall-mounted type air conditioning indoor unit shown in fig. 1 is operated in a heating mode;
fig. 6 is a schematic view illustrating a state of the wall-mounted air conditioner indoor unit shown in fig. 1 when the wall-mounted air conditioner indoor unit operates in a maximum outlet mode.
Detailed Description
A wall-mounted type air conditioning indoor unit according to an embodiment of the present invention will be described with reference to fig. 1 to 6. Where the orientations or positional relationships indicated by the terms "front," "back," "upper," "lower," "top," "bottom," "inner," "outer," "lateral," and the like are based on the orientations or positional relationships shown in the drawings, the description is for convenience only and to simplify the description, and no indication or suggestion is made that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention. The flow direction of the supply air flow is indicated by arrows in the figure.
The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first," "second," etc. may explicitly or implicitly include at least one such feature, i.e., one or more such features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. When a feature "comprises or includes" a or some of the features that it covers, this is to be taken as an indication that other features are not excluded and that other features may further be included, unless expressly stated otherwise.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and "coupled" and the like are to be construed broadly and can, for example, be fixedly connected or detachably connected or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. Those skilled in the art should understand the specific meaning of the above terms in the present invention according to specific situations.
Fig. 1 is a schematic cross-sectional view of a wall-mounted air conditioning indoor unit according to an embodiment of the present invention; fig. 2 is a schematic view showing the structure of an outlet portion of a duct 20 in the wall-mounted air conditioning indoor unit of fig. 1; FIG. 3 is an angled schematic view of the air chute 20 shown in FIG. 2.
The embodiment of the invention provides a wall-mounted air conditioner indoor unit. An indoor unit of a wall-mounted type air conditioner is an indoor part of a split wall-mounted type room air conditioner for conditioning indoor air, such as cooling/heating, dehumidifying, introducing fresh air, and the like.
As shown in fig. 1 to 3, a wall-mounted type air conditioning indoor unit according to an embodiment of the present invention may generally include a casing 10 and an air duct 20.
Wherein, the housing 10 is provided with an air outlet 12 opening towards the front lower part. The casing 10 defines a part receiving space for receiving a wall-mounted air conditioning indoor unit. The outlet 12 may be opened at a lower portion of the front side of the housing 10 so as to be open toward the front lower side. The outlet 12 is used to discharge the airflow in the housing 10 to the indoor environment to condition the indoor air. The discharged air flow is referred to as air flow which is acted on by a fan in the housing 10 to accelerate the air flow through the outlet 12 for conditioning the indoor environment, such as cold air in a cooling mode, hot air in a heating mode, and fresh air in a fresh air mode, etc. The housing 10 may be a long strip with a length direction horizontally disposed, and the air outlet 12 may be a long strip with a length direction parallel to the length direction of the housing 10.
The duct 20 includes a front duct wall 200 and a rear duct wall 100 spaced apart from each other in a front-rear direction, and outlet ends of the front duct wall 200 and the rear duct wall 100 are respectively connected to an upper end and a lower end of the air outlet 12, so as to guide the air flow of the housing 10 to the air outlet 12. Also, the rear duct wall 100 includes a main body section 110 and a turning section 120. The body segment 110 may be a curve that is recessed rearward to wrap the fan 40 at the rear side of the fan 40.
The turning section 120 is connected to the air outlet end of the main body section 110 and bends and extends downward compared with the main body section 110, so that the airflow flows out of the main body section 110 and then bends and flows downward along the turning section 120. In fig. 2, the dotted arrows near the rear air duct wall 100 indicate the airflow direction when the turning section 120 is not provided, and the solid arrows indicate the airflow direction after the turning section 120 is provided.
In the embodiment of the present invention, since the main body section 110 and the turning section 120 are disposed on the rear air duct wall 100, the air flow flows downward along the turning section 120 after flowing out from the main body section 110. According to the coanda effect (also called wall attachment effect) of a fluid, when there is surface friction (also called fluid viscosity) between the fluid and the surface of an object over which the fluid flows, the fluid will follow the surface of the object as long as the curvature is not large. Therefore, in the present embodiment, although the direction of the turning section 120 has a downward turning angle compared to the main body section 110, the airflow will continue to flow along the surface of the turning section 120 due to the viscosity. Therefore, the air outlet direction of the air flow has a downward turning, so that the air flow is closer to a vertical downward direction and is more beneficial to directly reaching the ground. Especially when the air conditioner heats, can realize warm foot experience through blowing downwards.
In some embodiments of the present invention, as shown in fig. 2 and 3, the shape of the turning section 120, the shape of the body section 110, and important dimensions and angle parameters are particularly limited so as to achieve an optimal "wind turning" effect. That is, even if the bending angle of the turning section 120 is larger, the wind direction turning angle is larger and closer to the vertical downward direction; meanwhile, a strong enough wall attachment effect is ensured, so that the problem that the airflow cannot be well attached to the surface of the turning section 120 due to a too large bending angle of the turning section 120 and the total amount of the airflow finally completing the turning is too small is avoided.
Specifically, as shown in fig. 2 and 3, the turning section 120 is a concave arc, and the axis of the arc is parallel to the transverse direction of the air outlet 12. The lateral direction of the outlet port 12 refers to the lateral direction of the housing 10, that is, the direction perpendicular to the paper surface in each of fig. 1 to 3.
Other fields some existing applications using the "coanda effect" often have the object surface arranged as a plane or convex outer surface in order to obtain a greater angular diversion of the fluid. However, if the turning section 120 is configured as an outer convex surface or a plane, the air flow is easier to be separated from the surface when the angle of the turning section 120 is larger, and the air flow amount of the final bending turn is reduced.
Based on this knowledge, the inventor of the present invention has designed the turning section 120 to be concave arc-shaped, and the main airflow body section 110 has a larger angle turning direction, which is called the initial turning angle α, when it enters the turning section. The air flow is gradually relaxed along the concave arc surface to gradually reduce the turning degree, and finally, the included angle between the air outlet direction from the outlet end of the bending section and the air outlet direction of the main body section 110 (called as the final turning angle beta) is smaller than the initial turning angle alpha. In short, the embodiment of the present invention utilizes the concave arc surface of the turning section 120 to form a certain buffer to the turned airflow, so that the coanda effect is better and the airflow rate of the coanda is more.
Further, as shown in fig. 3, an included angle between the air inlet direction of the turning section 120 and the air outlet direction of the main body section 110 (i.e. an included angle between the tangential direction of the inlet end of the turning section 120 and the tangential direction of the outlet end of the main body section 110, that is, the initial turning angle α) is between 25 ° and 35 °, inclusive. Preferably, α is set between 28 ° and 32 ° to make the initial turning angle of the airflow from the main body section 110 to the turning section 120 reach an optimal range, so that the "wind turning" is compatible in both angle and wind quantity.
In addition, as shown in fig. 3, an included angle between the air outlet direction of the turning section 120 and the air outlet direction of the main body section 110 (i.e., an included angle between the tangential direction of the outlet end of the turning section 120 and the tangential direction of the outlet end of the main body section 110, that is, the final turning angle β) may be between 5 ° and 15 °, inclusive. Preferably, β is set between 8 and 12 ° so that the air flow finally obtains an effective turning.
As shown in fig. 2 and 3, the portion of the main body section 110 connected to the turning section 120 is also in the shape of an inward concave arc, the axis of the inward concave arc is parallel to the transverse direction of the air outlet 12, and the ratio of the diameter of the inward concave arc to the diameter of the turning section 120 is between 2 to 3, including the end point value, and is preferably set to be between 1.5 to 2.5, so that the air flow is more stable in the turning direction from the main body section 110 to the turning section 120, and the unstable air flow caused by too large or too small difference of the diameters of the two is avoided.
In some embodiments of the present invention, as shown in fig. 2, an arc transition section 140(AB section) may be provided between the main body section 110 and the turning section 120(BC section), so that the transition between the two sections is more gradual, which is beneficial to enhance the wall attachment effect of the airflow.
In addition, the turning section 120(BC section) and the bottom wall 101 of the casing 10 may be connected by a convex protruding section 130(CD section), so that after the airflow flows out of the turning section 120(BC section), at least a portion of the airflow can continue to turn downward along the surface of the protruding section 130, so as to increase the downward blowing angle of the airflow, and the downward blowing direction is closer to the vertical direction.
In some embodiments of the present invention, as shown in fig. 1 to 3, the front air duct wall 200 may include a first section 210 (i.e., an EF section) extending from the front upper side to the rear lower side, and a second section 220 (i.e., an FG section) extending from the lower end of the first section 210 to the upper end of the air outlet 12 (including extending forward, extending upward forward, or extending downward forward). Moreover, the second section 220 is a convex arc, and the axis thereof is parallel to the transverse direction of the air outlet 12, i.e. parallel to the paper surface.
The inventor has recognized that the conventional wall-mounted air conditioning indoor unit is limited to the layout of the internal fan, the heat exchanger, and the like, and the air outlet is generally opened at the lower portion of the front side of the casing and is opened forward and downward. In such a solution, the air deflector at the air outlet is not convenient to guide the outlet airflow in a vertically upward or near vertically upward direction due to the obstruction of the front part of the housing. Therefore, the lift angle of the outlet air flow is very limited.
In the embodiment of the invention, the second section 220 is in the shape of the convex arc, so that the airflow on the surface of the front air duct wall 200 is gradually raised along the second section 220 by virtue of the coanda effect, the raising angle of the supplied airflow is larger, and the raising angle of the airflow is favorably improved and the raising distance is increased when the air conditioner performs refrigeration and upward blowing.
Further, the included angle θ between the air outlet direction and the air inlet direction of the second section 220 can be smaller than 45 °, so as to avoid excessive separation of the air flow from the surface of the second section 220 due to an excessively large turning angle, and to reduce the air flow finally bent and turned.
The wall-mounted air conditioner indoor unit of the embodiment of the invention can be an indoor part of a split wall-mounted room air conditioner which utilizes a vapor compression refrigeration cycle system to refrigerate/heat. As shown in fig. 1, a heat exchanger 30 and a fan 40 are provided inside the casing 10. The heat exchanger 30 and the throttle device are connected to a compressor, a condenser and other refrigeration components disposed in the casing of the outdoor unit of the air conditioner through pipelines, so as to form a vapor compression refrigeration cycle system.
Under the action of the fan 40, the indoor air enters the inside of the housing 10 through the air inlet 11 at the top of the housing 10, and after completing the forced convection heat exchange with the heat exchanger 30, forms heat exchange air, and then blows toward the air outlet 12 under the guidance of the air duct 20.
The fan 40 is preferably a cross flow fan having an axis parallel to the length of the housing 10, and is disposed at the inlet of the air duct 20. The heat exchanger 30 may be a three-stage heat exchanger that surrounds the fan 40 in front of and above the fan 40 to make its heat exchange efficiency higher.
In some embodiments, as shown in fig. 1, the wall-mounted air conditioning indoor unit may further include a wind deflector 60 for guiding the wind outlet 12 in the upward and downward directions. The air duct 60 is matched with the air deflector 60 to enhance the above-mentioned up-blowing/down-blowing effect. That is, when the air deflector 60 guides the air flow downward, the rear duct wall 100 can perform an auxiliary downward blowing function, which facilitates the downward blowing of the air flow. When the air deflector 60 guides the airflow upward, the front air duct wall 200 can perform an auxiliary upward blowing function, which is beneficial to blowing the airflow upward.
The air deflection 60 may include an air deflection body 61 and multiple layers of internal air deflection 62, 63. The air deflector body 61 is rotatably disposed at the air outlet 12 (around the y-axis), the multiple layers of inner air deflectors 62, 63 are disposed inside the air deflector body 61, and the multiple layers of inner air deflectors 62, 63 are sequentially fixed to the air deflector body 61 at intervals along a direction away from the inner surface of the air deflector body 61, so as to guide the air flow together with the air deflector body 61.
Specifically, the air guiding plate 60 may further include at least one connecting portion for connecting and fixing the air guiding plate body 61 and the multiple layers of internal air guiding plates 62 and 63.
The multilayer inner air deflectors 62 and 63 and the air deflector body 61 are arranged at intervals, when the air deflector body 61 rotates to a certain position, the air supply airflow can be guided by the air deflector body 61, and can enter the air deflector body 61 and the adjacent inner air deflectors 62 and 63, and can enter the interval between the air deflector body 61 and the adjacent inner air deflectors 62 and 63 and the interval between the adjacent two inner air deflectors 62 and 63, so that the air supply airflow can be guided by the multilayer inner air deflectors 62 and 63, the multi-layer guiding of the air supply airflow is realized, the air supply airflow direction discharged from the air outlet 12 is uniform, the air supply airflow is combed more smoothly, and the comfort level of a user is further improved.
In some embodiments, as shown in fig. 1, the number of the inner wind deflectors is two, and the two inner wind deflectors 62 and 63 are respectively arranged on the inner side of the wind deflector body 61 at intervals in sequence. In the flowing direction of the blowing air flow, the inner air deflector 63 which is farthest away from the air deflector body 61 can guide at least a part of the blowing air flow by using the inner surface thereof, the rest of the blowing air flow can sequentially enter the gap between the two inner air deflectors 62 and 63 and the gap between the inner air deflectors 62 and 63 which are positioned at the back and the air deflector body 61, and the rest of the blowing air flow is guided again by using the inner surfaces of the inner air deflectors 62 and 63 and the air deflector body 61, so that the blowing air flow in a certain direction is more layered.
In addition, the inventor finds out through simulation and experiment that: the direction and the wind speed of the air flow which is led out by the air deflector body 61 and the multiple layers of inner air deflectors 62 and 63 together (after being separated from the air deflector 60, the air flow is converged together) are more stable, the air gathering effect is better, the far-end wind speed of the outlet air is increased during refrigeration, the air supply distance is longer, the outlet air is guided more smoothly during heating, the air quantity loss is small, the wind resistance loss increased by adding the multiple inner air deflectors 62 and 63 can be completely offset, and the air outlet efficiency is even better than that of a single guide plate, so that the indoor unit 1 of the embodiment achieves unexpected technical effects.
It should be noted that the above examples are only for describing the technical solution of the present embodiment more clearly, and the specific number of the inner wind deflectors 62 and 63 is not limited, and those skilled in the art should understand that the number of the inner wind deflectors 62 and 63 in the present embodiment may also be three, four or more, but not all.
In the prior art, in order to adjust the air supply direction of an indoor unit of an air conditioner, an air deflector capable of swinging up and down is generally arranged at an air outlet. However, this adjustment has certain disadvantages. The air deflector can only guide the air flow close to the inner surface of the air deflector, but cannot guide the air flow far away from the inner surface of the air deflector, so that the air outlet air flow discharged from the air outlet is disordered, the air flow is not combed smoothly, and the experience of a user is reduced.
In order to overcome the defects of the prior art, in the wall-mounted air conditioner indoor unit of the embodiment, the inner air deflectors 62 and 63 which are fixed on the air deflector body 61 at intervals in multiple layers are additionally arranged on the inner side of the air deflector body 61, and the air flow blown out in a certain direction is enabled to be layered by utilizing the inner surfaces of the inner air deflectors 62 and 63 and the air deflector body 61 to guide the air flow, and the air flow is enabled to be more guided, the air flow is more smoothly combed, the overall direction and the air speed are more stable, so that the air gathering effect of the air flow is enabled to be better, the air outlet efficiency is higher, and the experience of users is improved.
In some embodiments, an orthographic projection of the inner air deflector 62 adjacent to the air deflector body 61 onto the air deflector body 61 falls on the air deflector body 61. And in the direction far away from the inner surface of the air deflector body 61, the orthographic projection of the rest inner air deflectors to the upper layer falls on the inner air deflector of the upper layer.
In the present embodiment, the inner air guiding plate 62 adjacent to the air guiding plate body 61 may be set to have the same size as the air guiding plate body 61, or smaller than the width of the air guiding plate body 61, and is opposite to the air guiding plate body 61, so that the air guiding plate body 61 can wrap the inner air guiding plate 62, 63.
Similarly, the remaining inner wind deflectors can be set to have the same size as the inner wind deflector on the previous layer, or smaller than the width of the wind deflector body 61, and are opposite to the inner wind deflector on the previous layer, so that the inner wind deflector on the previous layer can wrap the inner wind deflector on the next layer.
After the above limitation, when the air deflector 60 is used for guiding air, the inner air deflector or the air deflector body 61 located at the outer layer can receive the air supply flow leaking from the inner air deflector at the inner layer, so as to ensure that the air supply flow can be guided by multiple layers and finally discharged out of the air outlet 12.
In some embodiments, the same side ends of the air deflector body 61 and the multi-layer inner air deflectors 62 and 63 can also be configured to be on the same plane.
One ends of the air deflector body 61 and the multiple layers of internal air deflectors 62 and 63 are positioned on the same plane, and the other ends of the air deflector body 61 and the multiple layers of internal air deflectors 62 and 63 are positioned on the same plane, so that the appearance of the air deflector 60 is more attractive.
In some embodiments, the width of the deflector body 61 is greater than the width of the inner deflector 62 adjacent thereto, and the width of the multiple layers of inner deflectors 62, 63 decreases in a direction away from the inner surface of the deflector body 61.
That is, for the inner air deflector of the inner layer, the two ends of the inner air deflector of the outer layer are provided with the dislocation sections which are expanded to form the inner air deflector of the inner layer, and the dislocation sections can be used for not only receiving the air supply flow leaked from the inner air deflector of the inner layer, but also facilitating the air supply flow to enter the gap between the two inner air deflectors, and finally ensuring the air supply flow to enter the gap between every two adjacent inner air deflectors.
Similarly, the width of the air guide plate body 61 of the inner air guide plate 62 adjacent to the air guide plate body 61 is larger than the width of the inner air guide plate 62 adjacent to the air guide plate body 61, and the offset sections extending out of the inner air guide plate 62 adjacent to the air guide plate body 61 are provided at both ends of the air guide plate body 61, and the air flow leaking from the inner air guide plate 62 at the inner layer is received by the offset sections.
Further, the inner surfaces of the air guide plate body 61 and the inner air guide plates 62 and 63 may be arranged in concentric circular arc surfaces.
In fluid mechanics, according to the principle of the coanda effect, when a fluid has a tendency to flow along a convex object surface instead of a normal flow direction, the fluid will flow along the object surface when there is surface friction between the fluid and the object surface over which it flows, as long as the curvature is not large.
Therefore, the inner side surfaces of the air deflector body 61 and the inner air deflectors 62 and 63 can be configured to be concentric circular arc surfaces, so that the air flow flowing through the inner surfaces of the air deflector body 61 and the inner air deflectors 62 and 63 can be better absorbed, and the guiding effect is better.
Further, the ratio of the distance between the air deflection body 61 and the adjacent inner air deflection plates 62, 63 to the arc length of the inner surface of the air deflection body 61 may also be configured to be between 1/5 and 1/3, such as 1/5, 1/4 or 1/3.
In the direction far away from the inner surface of the air deflector body 61, the ratio of the distance between each inner air deflector 62, 63 and the next adjacent inner air deflector 62, 63 to the arc length of the inner air deflector 62, 63 is between 1/5 and 1/3, such as 1/5, 1/4 or 1/3.
Preferably, the ratio of the arc length of the inner surface of the air deflector body 61 between the air deflector body 61 and the adjacent inner air deflectors 62 and 63 is the same as the ratio of the arc length of the inner air deflector 62 and 63 between the distance between each inner air deflector 62 and 63 and the next inner air deflector 62 and 63.
For the air deflector body 61 and the inner air deflectors 62 and 63, the longer the arc length is, the stronger the air guiding capability is, so that the larger the corresponding distance between the inner surfaces of the air deflector body 61 or the inner air deflectors 62 and 63 with longer arc length is, the larger the flow rate of the supplied air flow is, and the more reasonably the supplied air flow is distributed to the air deflector body 61 and the inner air deflectors 62 and 63, so as to guide the supplied air flow more and enable the supplied air flow to be combed more smoothly.
Of course, after those skilled in the art know the technical solution of the present embodiment, the inner surfaces of the air guiding plate body 61 and the multiple layers of inner air guiding plates 62, 63 can be set to be flat. Compared with the above-described embodiment, the flat plate-shaped air deflector body 61 and the multi-layer inner air deflectors 62 and 63 can basically guide the blowing air flow more, but the technical effect obtained by the arc-shaped inner surface is better.
Fig. 4 is a schematic view illustrating a state where the wall-mounted air conditioner indoor unit of fig. 1 is operated in a cooling mode; fig. 5 is a schematic view illustrating a state where the wall-mounted type air conditioning indoor unit shown in fig. 1 is operated in a heating mode; fig. 6 is a schematic view illustrating a state of the wall-mounted air conditioning indoor unit shown in fig. 1 when operating in a maximum outlet mode.
As shown in fig. 4, the air guiding plate 60 can be rotated to an upward blowing position where the inner surfaces of the air guiding plate body 61 and the inner air guiding plates 62 and 63 face upward, so as to guide the blowing air flow forward or forward and upward. The up-blow position is particularly suited for the cooling mode.
As shown in fig. 5, the air deflector 60 can be rotated to a downward blowing position where the inner surfaces of the air deflector body 61 and the inner air deflectors 62 and 63 face rearward, so as to guide the air flow downward. The down-blowing position is particularly suitable for heating mode.
As shown in fig. 6, the air deflector 60 can be rotated to a position where the air deflector body 61 is substantially parallel to the front duct wall 200 and the rear duct wall 100, so as to minimize the resistance to the air flow and realize the maximum air volume blowing.
It should be noted that the above example is only for describing the operation principle of the air deflector 60 of the present embodiment more clearly, and is not used to limit what temperature adjusting mode (heating or cooling) the wall-mounted air conditioning indoor unit is necessarily in when the air deflector 60 is at what position. The user can adjust the working position of the air guiding plate 60 at will according to the actual situation, for example, the air guiding plate 60 is adjusted to the upper blowing position in the heating mode, and the air guiding plate 60 is adjusted to the lower blowing position in the cooling mode, which is not described herein again.
In some embodiments, the wall-mounted air conditioning indoor unit further includes an outer air deflector 50, and the outer air deflector 50 is movably disposed at the outlet 12 for opening and closing the outlet 12. Specifically, the outer wind deflector 50 may be rotatably mounted to the housing 10 with the rotation axis x at the rear duct wall 100 so as to move to a position directly below the housing 10 to completely open the wind outlet 12.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. An indoor unit of a wall-mounted air conditioner, comprising:
a housing provided with an air outlet opening forward and downward;
the air duct comprises a front air duct wall and a rear air duct wall which are arranged at intervals in the front-rear direction, and the outlet ends of the front air duct wall and the rear air duct wall are respectively connected with the upper end and the lower end of the air outlet so as to guide the airflow of the shell to the air outlet; and is
The rear air duct wall comprises a main body section and a turning section, wherein the turning section is connected with the air outlet end of the main body section and bends and extends downwards compared with the main body section, so that the air flow flows out of the main body section and then flows downwards along the turning section in a bending way.
2. The wall mounted indoor unit of air conditioner of claim 1, wherein
The turning section is an inwards concave arc, and the axis of the arc is parallel to the transverse direction of the air outlet.
3. The wall-mounted indoor unit of air conditioner of claim 2, wherein
The air inlet direction of the turning section and the air outlet direction of the main body section form an included angle of 25-35 degrees.
4. The wall-mounted indoor unit of air conditioner of claim 2, wherein
The air outlet direction of the turning section and the air outlet direction of the main body section form an included angle of 5-15 degrees.
5. The wall-mounted indoor unit of air conditioner of claim 2, wherein
The part of the main body section, which is connected with the turning section, is also in a concave arc shape, the axis of the main body section is parallel to the transverse direction of the air outlet, and the ratio of the diameter of the main body section to the diameter of the turning section is 2-3.
6. The wall mounted indoor unit of air conditioner of claim 5, wherein
The turning section is connected with the bottom wall of the shell through a convex protruding section.
7. The wall-mounted indoor unit of air conditioner of claim 5, wherein
An arc transition section is arranged between the main body section and the turning section.
8. The wall-mounted indoor unit of air conditioner of claim 1, wherein
The front air duct wall comprises a first section and a second section, wherein the first section extends from the front upper part to the rear lower part, and the second section extends from the lower end of the first section to the upper end of the air outlet; and is
The second section is in a convex arc shape, and the axis of the second section is parallel to the transverse direction of the air outlet.
9. The wall mounted indoor unit of claim 8, wherein
The air outlet direction of the second section and the included angle of the air inlet direction are smaller than 45 degrees.
10. The wall mounted indoor air conditioner of claim 1, further comprising a louver, the louver comprising:
the air deflector body is rotatably arranged at the air outlet;
the multilayer inner air deflector is arranged on the inner side of the air deflector body and is sequentially fixed on the air deflector body at intervals along the direction far away from the inner surface of the air deflector body so as to guide air flow together with the air deflector body.
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