CN114963328B - Wall-mounted air conditioner indoor unit - Google Patents
Wall-mounted air conditioner indoor unit Download PDFInfo
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- CN114963328B CN114963328B CN202110188988.9A CN202110188988A CN114963328B CN 114963328 B CN114963328 B CN 114963328B CN 202110188988 A CN202110188988 A CN 202110188988A CN 114963328 B CN114963328 B CN 114963328B
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- air
- section
- wall
- main body
- air outlet
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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
Abstract
The invention provides a wall-mounted air conditioner indoor unit, which comprises: a shell provided with an air outlet opening towards the front lower side; 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 air flow of the shell to the air outlet; 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 is bent downwards compared with the main body section, so that air flows downwards along the turning section after flowing out of the main body section. The invention strengthens the downdraft effect of the wall-mounted air conditioner indoor unit and enables the downdraft 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 sinking trend is caused due to the relatively large density of cold air; when the air conditioner operates in a heating mode, the density of hot air is relatively small and has an ascending trend. Therefore, the air conditioner needs to blow cold air upwards as much as possible during refrigeration and hot air towards the ground as much as possible during heating, so that the cold air or the hot air can be uniformly diffused in the indoor space, the refrigerating and heating speed is higher, the refrigerating and heating effects are better, and the cold and hot feeling of a user is better.
The existing various wall-mounted air conditioner 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 deflector and swing blades are utilized to guide the air outlet direction of the air flow of the air supply, so that upward blowing or downward blowing is realized. However, the current air guiding angle of various air guiding structures is limited, and only air supplying to the obliquely upper part or the obliquely lower part can be realized, so that cold air or hot air is difficult to reach a roof or a floor area, and the refrigerating or heating effect is affected.
Disclosure of Invention
It is an object of the present invention 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 downward blowing effect of the wall-mounted air conditioner indoor unit, so that the downward blowing direction is closer to the vertical direction.
In particular, the present invention provides a wall-mounted air conditioner indoor unit comprising:
a shell provided with an air outlet opening towards the front lower side;
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 air flow of the shell to the air outlet; and is also provided with
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 is bent downwards compared with the main body section, so that air flows downwards along the turning section after flowing out of the main body section.
Optionally, the turning section is a concave arc, and an axis of the arc is parallel to a transverse direction of the air outlet.
Optionally, an included angle between the air inlet direction of the turning section and the air outlet direction of the main body section is between 25 degrees and 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 degrees and 15 degrees.
Optionally, the connecting part of the main body section and 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 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 provided between the main body section and the turning section.
Optionally, the front air duct wall comprises a first section extending from front upper side to rear lower side and a second section extending forward from the lower end of the first section to the upper end of the air outlet; 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, the included angle between the air outlet direction and the air inlet direction of the second section is smaller than 45 degrees.
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 multi-layer inner air guide plate is arranged on the inner side of the air guide plate body, and is sequentially fixed on the air guide plate body at intervals along the direction away from the inner surface of the air guide plate body so as to guide the air supply flow together with the air guide plate body.
In the wall-mounted air conditioner indoor unit, the air duct comprises the front air duct wall and the rear air duct wall which are arranged at intervals in the front-rear direction, so that the rear air duct wall comprises the main body section and the turning section, the turning section is connected with the air outlet end of the main body section and is bent and extended downwards compared with the main body section, and the air flow flows out from the main body section and then is bent and flowed downwards along the turning section. According to the coanda effect (also known as the coanda effect), when there is surface friction (also known as fluid viscosity) between a fluid and the surface of an object over which it flows, the fluid will flow along the surface of the object as long as the curvature is not large. Thus, while the direction of the turn section has an angled downward turn compared to the main section, the airflow will continue along the surface of the turn section. This allows the air flow to have a downward turn in the direction of the air flow, thus more closely approximating a vertically downward direction, to facilitate a direct ground. Particularly when the air conditioner heats, the foot warming experience can be realized by blowing the air downwards.
Further, in the wall-mounted air conditioner indoor unit of the present invention, the shape of the turning section, the shape of the main body section, and important dimensions and angle parameters are particularly limited so as to achieve an optimal "wind direction turning" effect. Namely, the bending angle of the turning section is larger, so that the wind direction turning angle is larger and is closer to the vertical direction; meanwhile, a strong coanda effect is ensured, and the phenomenon that air flow cannot be well attached to the surface of the turning section due to the fact that the bending angle of the turning section is too large is avoided, and the total amount of air flow which is finally turned is excessively small.
Further, the inventors of the present invention found that if the turning section is provided as an outer convex surface or a flat surface, it has a coanda effect, but when the angle of the turning section is large, the air flow is relatively easy to separate from the surface, and instead the air flow amount of the final turning turn becomes small. Based on this recognition, the inventors have devised the turn section specifically as a concave arc, with a greater angular turn of the main airflow section initially entering the turn section, referred to as the initial turn angle. The airflow is then gradually relaxed along the concave cambered surface, so that the steering degree is gradually reduced, and the final included angle (called final turning angle) between the air outlet direction of 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 form certain buffer to the air flow after turning, so that the wall attaching effect is better and the air flow of the attached wall is more.
Further, 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 be 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 be between 5 degrees and 15 degrees, so as to strengthen the effect and make the wind direction turning be compatible in both angle and air quantity.
In the wall-mounted air conditioner indoor unit, the turning section is connected with the bottom wall of the shell through the convex section which is convex, so that after the air flow flows out of the turning section, the air flows out of the air outlet along the convex section by virtue of the wall attaching effect, and the air outlet direction is further turned downwards, so that the air outlet direction is more close to the vertical direction.
In the wall-mounted air conditioner indoor unit, the front air duct wall comprises the first section extending from the front upper part to the rear lower part and the second section extending forwards from the lower end of the first section to the upper end of the air outlet, and the second section is in an outwards convex arc shape, so that the air flow on the surface of the front air duct wall gradually rises along the second section, the rising angle of the supplied air flow is larger, and the rising angle of the air flow is favorably improved when the air conditioner cools and blows air upwards.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read 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 will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic cross-sectional view of a wall-mounted air conditioner indoor unit according to one embodiment of the present invention;
fig. 2 is a schematic structural view of an outlet portion of an air duct in the indoor unit of the wall-mounted air conditioner shown in fig. 1;
FIG. 3 is a schematic view of the air duct of FIG. 2 with angle labels;
fig. 4 is a schematic view of the indoor unit of the wall-mounted air conditioner shown in fig. 1 in a cooling mode;
fig. 5 is a schematic view illustrating a state of the wall-mounted air conditioner indoor unit shown in fig. 1 when the heating mode is operated;
fig. 6 is a schematic view of the indoor unit of the wall-mounted air conditioner shown in fig. 1 in a maximum air outlet mode.
Detailed Description
A wall-mounted air conditioner indoor unit according to an embodiment of the present invention will be described with reference to fig. 1 to 6. Where the terms "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", "transverse", etc., refer to an orientation or positional relationship based on that shown in the drawings, this is merely for convenience in describing the invention and to simplify the description, and does not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. The flow direction of the supply air flow is shown by arrows.
The terms "first," "second," and the like 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, a feature defining "a first", "a second", etc. may include at least one, i.e. one or more, of the feature, either explicitly or implicitly. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. When a feature "comprises or includes" a feature or some of its coverage, this indicates that other features are not excluded and may further include other features, unless expressly stated otherwise.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," "coupled," and the like should be construed broadly, as they may be fixed, removable, or integral, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. Those of ordinary skill in the art will understand the specific meaning of the terms described above in the present invention as the case may be.
Fig. 1 is a schematic cross-sectional view of a wall-mounted air conditioner indoor unit according to one embodiment of the present invention; fig. 2 is a schematic view showing the structure of an outlet portion of the air duct 20 in the wall-mounted air conditioner indoor unit shown in fig. 1; fig. 3 is a schematic view of the duct 20 of fig. 2 with an angle label.
The embodiment of the invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit is an indoor part of a split wall-mounted room air conditioner and is used for adjusting indoor air, such as refrigeration/heating, dehumidification, fresh air introduction and the like.
As shown in fig. 1 to 3, the wall-mounted air conditioner indoor unit according to the embodiment of the present invention may generally include a housing 10 and an air duct 20.
Wherein, the shell 10 is provided with an air outlet 12 which is opened towards the front lower side. The casing 10 defines a respective component accommodating space for accommodating the wall-mounted air conditioner indoor unit. The air outlet 12 may be opened at a front lower portion of the housing 10 so as to be opened forward and downward. The air outlet 12 is used to discharge the air flow in the housing 10 to the indoor environment to condition the indoor air. The discharged air flow refers to an air flow that is acted on by a fan in the case 10 to accelerate the flow of air flowing through the air outlet 12 for adjusting the indoor environment, such as cool air in a cooling mode, hot air in a heating mode, fresh air in a fresh air mode, and the like. The housing 10 may be an elongated shape with a horizontal longitudinal direction, and the air outlet 12 may be an elongated shape with a longitudinal direction parallel to the longitudinal direction of the housing 10.
The duct 20 includes a front duct wall 200 and a rear duct wall 100 disposed at a front-rear interval, and outlet ends of the front duct wall 200 and the rear duct wall 100 are respectively connected with upper and lower ends of the air outlet 12 for guiding 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 section 110 may be curved with a concave rearward facing shape to wrap the blower 40 on the rear side of the blower 40.
The turning section 120 is connected to the air outlet end of the main body section 110 and is bent downward compared with the main body section 110, so that the air flows out of the main body section 110 and then flows along the turning section 120 in a downward bent manner. In fig. 2, the dashed arrow near the rear duct wall 100 indicates the direction of the air flow assuming that the turning section 120 is not provided, and the solid arrow indicates the direction of the air flow 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 duct wall 100, the airflow flows downward along the turning section 120 after flowing out from the main body section 110. According to the coanda effect (also known as the coanda effect) of a fluid, when there is surface friction (also known as fluid viscosity) between the fluid and the surface of an object over which it flows, the fluid will flow along the surface of the object as long as the curvature is not large. Thus, in this embodiment, although the direction of the turn section 120 has an angle downward turn compared to the main section 110, the airflow will continue to flow along the surface of the turn section 120 due to the viscosity. This allows the air flow to have a downward turn in the direction of the air flow, thus more closely approximating a vertically downward direction, to facilitate a direct ground. Particularly when the air conditioner heats, the foot warming experience can be realized by blowing the air 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 main body section 110, and important dimensions and angular parameters are specifically limited so as to achieve an optimal "wind direction turning" effect. That is, the angle of bending the turning section 120 is made larger, so that the angle of turning the wind direction is made larger, and is closer to the vertical downward direction; meanwhile, a strong coanda effect is ensured, so that the situation that the airflow cannot be well attached to the surface of the turning section 120 due to the fact that the bending angle of the turning section 120 is too large is avoided, and the total amount of the airflow which is finally turned is too small.
Specifically, as shown in fig. 2 and 3, the turning section 120 is formed into a concave arc shape, and the axis of the arc is parallel to the lateral direction of the air outlet 12. The lateral direction of the air outlet 12 refers to the lateral direction of the casing 10, that is, the direction perpendicular to the paper surface in each of fig. 1 to 3.
In some existing applications that utilize the "coanda effect" in other fields, the surface of the object is often configured to be planar or convex in order to achieve a greater degree of deflection of the fluid. The inventors of the present invention have found that if the turning section 120 is configured to have a convex or flat surface with a coanda effect, when the angle of the turning section 120 is large, the airflow is easier to separate from the surface, but the airflow amount of the final turning becomes smaller.
Based on this recognition, the inventors of the present invention devised the turn section 120 specifically as a concave arc, with a greater angular turn, referred to as the initial turn angle α, when the main airflow section 110 initially enters the turn section. The airflow is then gradually relaxed along the concave arc surface, so that the turning degree is gradually reduced, and the final included angle (called final turning angle beta) between the air outlet direction of the outlet end of the bending section and the air outlet direction of the main body section 110 is smaller than the initial turning angle alpha. In summary, the embodiment of the present invention utilizes the concave arc surface of the turning section 120 to form a certain buffer for the air flow after turning, so that the coanda effect is better and the air flow with the coanda is more.
Further, as shown in fig. 3, the included angle between the air inlet direction of the turning section 120 and the air outlet direction of the main section 110 (i.e., the 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 section 110, i.e., the initial turning angle α) is between 25 ° and 35 °, including the end point value. Preferably, α is set between 28 ° and 32 ° to achieve an optimal range of initial direction turning angles of the airflow from the main body section 110 to the turning section 120, so that the "wind direction turning" is compatible in both angle and air volume.
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 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 section 110, that is, the final turning angle β) is between 5 ° and 15 °, including the end point values. Preferably, β is set between 8 and 12 ° so that the airflow eventually achieves an effective turn.
As shown in fig. 2 and 3, the portion of the main body 110 connected to the turning section 120 may be in a concave arc shape, the axis of which is parallel to the transverse direction of the air outlet 12, and the ratio of the diameter of the main body 110 to the diameter of the turning section 120 is between 2 and 3, including the end point value, preferably between 1.5 and 2.5, so that the air flow is more stable in the direction of turning from the main body 110 to the turning section 120, and the unstable air flow caused by too large or too small difference of the diameters of the main body 110 and the turning section 120 is avoided.
In some embodiments of the present invention, as shown in fig. 2, a circular 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 main body section and the turning section is more gentle, which is beneficial to enhancing the coanda effect of the airflow.
In addition, the turning section 120 (BC section) and the bottom wall 101 of the housing 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 downwards 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 duct wall 200 may be made to include a first section 210 (i.e., EF section) extending from the front upper side toward the rear lower side and a second section 220 (i.e., FG section) extending forward (including extending straight forward, extending forward upward, or extending forward downward) from the lower end of the first section 210 to the upper end of the air outlet 12. And, the second section 220 is in a convex arc shape, and the axis of the second section is parallel to the transverse direction of the air outlet 12, namely, parallel to the paper surface direction.
The inventor has recognized that the conventional wall-mounted air conditioner indoor unit is limited by the layout of an internal fan, a heat exchanger and the like, and generally has an air outlet opening at the lower front side of the casing and opened forward and downward. In such a solution, the deflector at the outlet is not convenient to direct the outlet air flow in a vertically upward or near vertically upward direction due to the obstruction of the front part of the housing. Therefore, the rising angle of the air-out airflow is very limited.
According to the embodiment of the invention, the second section 220 is in the convex arc shape, so that the air flow on the surface of the front air duct wall 200 gradually rises along the second section 220 by virtue of the wall attaching effect, the rising angle of the supplied air flow is larger, and the rising angle of the air flow is improved and the rising distance is improved when the air conditioner cools and blows air.
Further, the included angle θ between the air outlet direction and the air inlet direction of the second section 220 is smaller than 45 °, so as to avoid excessive air flow from separating from the surface of the second section 220 due to the overlarge turning angle, and instead reduce the air flow amount of the final turning.
The indoor unit of the wall-mounted air conditioner provided by the embodiment of the invention can be an indoor part of a split wall-mounted room air conditioner for refrigerating/heating by utilizing a vapor compression refrigeration cycle system. As shown in fig. 1, the inside of the housing 10 is provided with a heat exchanger 30 and a blower 40. The heat exchanger 30 and the throttling device are connected with a compressor, a condenser and other refrigerating elements arranged in the outdoor unit casing of the air conditioner through pipelines to form a vapor compression refrigerating cycle system.
Under the action of the fan 40, indoor air enters the interior of the shell 10 through the air inlet 11 at the top of the shell 10, and after forced convection heat exchange with the heat exchanger 30 is completed, heat exchange air is formed, and then the air is blown to the air outlet 12 under the guidance of the air duct 20.
The fan 40 is preferably a cross-flow fan with its axis parallel to the length direction of the housing 10, which is disposed at the inlet of the air duct 20. The heat exchanger 30 may be a three-stage heat exchanger that surrounds the blower 40 in front of and above the blower 40 to make it more efficient in heat exchange.
In some embodiments, as shown in fig. 1, the wall-mounted air conditioner indoor unit may further include an air deflector 60 for guiding the up-down air outlet direction of the air outlet 12. The air duct 60 is matched with the air deflector 60 to enhance the upward/downward blowing effect. That is, when the air deflector 60 guides the air flow downward, the rear duct wall 100 can exert an auxiliary downward blowing effect, facilitating the air flow to be blown downward. When the air deflector 60 guides the air flow upward, the front air duct wall 200 can exert an auxiliary upward blowing effect, which is beneficial to the upward blowing of the air flow.
The air deflection 60 may include a deflection body 61 and multiple layers of inner deflection 62, 63. The air deflector body 61 is rotatably disposed at the air outlet 12 (around the y axis), the inner air deflectors 62, 63 are disposed inside the air deflector body 61, and the inner air deflectors 62, 63 are sequentially fixed to the air deflector body 61 at intervals in a direction away from the inner surface of the air deflector body 61 so as to guide the supply air flow together with the air deflector body 61.
Specifically, the air deflector 60 may further include at least one connection portion for connecting and fixing the air deflector body 61 and the multi-layered inner air deflector 62, 63.
The air deflector body 61 rotates a certain position when the air deflector body 61, and the air supply air current not only can be guided by the air deflector body 61, but also can enter the space between the air deflector body 61 and the adjacent inner air deflector 62, 63 and the space between each adjacent two inner air deflector 62, 63, so that the air supply air current can be guided by the inner air deflector 62, 63 in the plurality of layers, the multi-layer guiding of the air supply air current is realized, the air supply air current direction exhausted from the air outlet 12 is uniform, the air supply air current is carded more smoothly, and the comfort level of a user is improved.
In some specific embodiments, as shown in fig. 1, the number of the inner air deflectors may be two, and the inner air deflectors 62 and 63 are respectively arranged on the inner side of the air deflector body 61 at intervals. In the flow direction of the air flow, the inner air deflector 63 farthest from the air deflector body 61 can guide at least a part of the air flow by using its inner surface, and the rest of the air flow can sequentially enter the gap between the two inner air deflectors 62, 63 and the gap between the inner air deflector 62, 63 and the air deflector body 61 located at the rear, and the rest of the air flow is redirected by using the inner surfaces of the inner air deflectors 62, 63 and the air deflector body 61, so that the air flow blown out in a certain direction is more layered.
Furthermore, the inventors found after simulation and experiment that: the direction and the wind speed of the air flow which is guided out together (and gathered together after being separated from the air guide plate 60) by the air guide plate body 61 and the multi-layer inner air guide plates 62 and 63 are more stable, the wind gathering effect is better, the wind speed at the far end of the air outlet is increased during refrigeration, the air supply distance is farther, the air outlet guide is smoother during heating, the wind loss is small, the windage loss increased due to the addition of the plurality of inner air guide plates 62 and 63 can be completely counteracted, and even the air outlet efficiency of a single guide plate is better, so that the indoor unit 1 of the embodiment achieves unexpected technical effects.
It should be noted that the foregoing examples are only for clearly describing the technical solution of the present embodiment, and are not limited to the specific number of the inner air deflectors 62, 63, and those skilled in the art should understand that the number of the inner air deflectors 62, 63 in the present embodiment may be three, four or more, but not necessarily the same.
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 drawbacks. The aviation baffle can only be directed to the air current that is close to its internal surface, and can't be directed to the air current that is kept away from its internal surface, consequently, this probably leads to the exhaust air current of follow air outlet to be disordered and disorderly, and the air current is combed unsmoothly, reduces user's experience and feels.
In order to overcome the defects of the prior art, the wall-mounted air conditioner indoor unit of the embodiment adds multiple layers of inner air deflectors 62 and 63 which are spaced at intervals and are fixed on the air deflector body 61 on the inner side of the air deflector body 61, and guides the air supply air flow by utilizing the inner air deflectors 62 and 63 and the inner surface of the air deflector body 61 in multiple layers, so that the air flow blown out in a certain direction is more layered, and the air flow carding is smoother due to the more guiding of the air supply air flow, the overall direction and the air speed are more stable, the wind gathering effect of the air supply air flow is better, the air outlet efficiency is higher, and the experience of a user is improved.
In some embodiments, the orthographic projection of the inner deflector 62 adjacent to the deflector body 61 onto the deflector body 61. And in the direction away from the inner surface of the air deflector body 61, the orthographic projection of the remaining inner air deflector toward the upper layer falls on the inner air deflector of the upper layer.
In this embodiment, the inner air deflector 62 adjacent to the air deflector body 61 may be equal to the air deflector body 61 in size, or may be smaller than the air deflector body 61 in width, and opposite to the air deflector body 61, so that the air deflector body 61 can wrap the inner air deflector 62, 63.
Similarly, the other inner air deflectors can be equal to the inner air deflector on the upper layer, or smaller than the width of the air deflector body 61 and opposite to the inner air deflector on the upper layer, so that the inner air deflector on the upper layer can wrap the inner air deflector on the lower layer.
By the above limitation, when the air guide plate 60 guides air, the inner air guide plate or the air guide plate body 61 positioned on the outer layer can receive the air flow leaked from the inner air guide plate on the inner layer, thereby ensuring that the air flow can be guided in multiple layers and finally discharged out of the air outlet 12.
In some embodiments, the air deflector body 61 and the ipsilateral ends of the multi-layer inner air deflector 62, 63 may also be configured to lie in the same plane.
One end of the air deflector body 61 and one end of the multi-layer inner air deflector 62, 63 are positioned on the same plane, and the other end of the air deflector body 61 and the other end of the multi-layer inner air deflector 62, 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 widths of the inner deflector 62, 63 of the multiple layers decrease in sequence 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 dislocation sections which expand the inner air deflector of the inner layer, and the dislocation sections can be used for receiving the air flow leaked from the inner air deflector of the inner layer, and facilitating the air flow to enter the gap between the two inner air deflectors, and finally ensuring the air flow to enter the gap between every two adjacent inner air deflectors.
Similarly, the width 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 thereto, and both ends of the air guide plate body 61 have offset sections extending out of the inner air guide plate 62 adjacent thereto, and the air flow leaking from the inner air guide plate 62 of the inner layer is received by the offset sections.
Further, the inner surfaces of the air deflector body 61 and the respective inner air deflectors 62, 63 may be also arranged in concentric circular arc surfaces.
In fluid mechanics, according to the principles of the coanda effect, when a fluid changes from an original flow direction to a tendency to flow with a convex object surface, when there is surface friction between the fluid and the object surface through which it flows, the fluid flows along the object surface 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, 63 can be arranged to be concentric arc surfaces, so that the air flow flowing through the inner surfaces of the air deflector body 61 and the inner air deflectors 62, 63 can be better absorbed, and the guiding effect is better.
Further, the ratio of the space between the air deflector body 61 and the inner air deflector 62, 63 adjacent thereto to the arc length of the inner surface of the air deflector body 61 may also be configured to be between 1/5 and 1/3, for example, 1/5, 1/4, 1/3, or the like.
The ratio of the distance of each inner air deflector 62, 63 from its adjacent next 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, etc., in the direction away from the inner surface of the air deflector body 61.
Preferably, the ratio of the arc length of the inner surface of the air deflector body 61 to the space between the air deflector body 61 and the adjacent inner air deflector 62, 63 may be the same as the ratio of the space between the air deflector 62, 63 in each layer and the adjacent next inner air deflector 62, 63 to the arc length of the inner air deflector 62, 63.
The longer the arc length is, the stronger the air guiding capability is, so that the longer the arc length is, the larger the corresponding distance between the inner surfaces of the air guide plate body 61 or the inner air guide plates 62, 63 is, the larger the flow rate of the air supply air flow is, and the air supply air flow is more reasonably distributed to the air guide plate body 61 and each inner air guide plate 62, 63, so that the air supply air flow is guided more smoothly.
Of course, the inner surfaces of the air deflector body 61 and the multi-layer inner air deflector 62, 63 may be provided as flat surfaces after the technical solution of the present embodiment is known to those skilled in the art. The flat plate-shaped air guide plate body 61 and the multi-layer inner air guide plates 62, 63 can basically guide the flow of the supplied air more than in the above-described embodiment, but the circular-arc-shaped inner surface achieves a better technical effect.
Fig. 4 is a schematic view of the indoor unit of the wall-mounted air conditioner shown in fig. 1 in a cooling mode; fig. 5 is a schematic view illustrating a state of the wall-mounted air conditioner indoor unit shown in fig. 1 when the heating mode is operated; fig. 6 is a schematic view of the indoor unit of the wall-mounted air conditioner shown in fig. 1 in a maximum air outlet mode.
As shown in fig. 4, the air guide plate 60 is rotatable to an upward blowing position with the inner surfaces of the air guide plate body 61 and the respective inner air guide plates 62, 63 facing upward to guide the supply air flow forward or upward. This up-blowing position is particularly suitable for use in a cooling mode.
As shown in fig. 5, the air guide plate 60 is rotatable to a downward blowing position in which the inner surfaces of the air guide plate body 61 and the respective inner air guide plates 62, 63 face rearward to guide the supply air flow downward. The blow down position is particularly suitable for heating modes.
As shown in fig. 6, the air guide plate 60 can be rotated to a position where the air guide plate body 61 is substantially parallel to the front air duct wall 200 and the rear air duct wall 100, so that the resistance to the air flow is minimized, and the maximum air volume air supply is realized.
It should be noted that the above examples are only for describing the operation principle of the air deflector 60 of the present embodiment more clearly, and are not intended to limit what temperature adjustment mode (heating or cooling) the wall-mounted air conditioner indoor unit must be in when the air deflector 60 is located at what position. The user may optionally adjust the working position of the air deflector 60 according to the actual situation, for example, adjust the air deflector 60 to the upper blowing position in the heating mode, adjust the air deflector 60 to the lower blowing position in the cooling mode, etc., which will not be described herein.
In some embodiments, the wall-mounted air conditioner indoor unit may further include an outer air deflector 50, where the outer air deflector 50 is movably disposed at the air outlet 12, for opening and closing the air outlet 12. Specifically, the outer air deflector 50 may be rotatably mounted to the housing 10 with the axis of rotation x at the rear duct wall 100 so as to move to a position directly below the housing 10 to completely open the air outlet 12.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (8)
1. A wall-mounted air conditioner indoor unit comprising:
a shell provided with an air outlet opening towards the front lower side;
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 air flow of the shell to the air outlet; and is also provided with
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 is bent downwards compared with the main body section, so that air flows downwards along the turning section after flowing out of the main body section;
the turning section is of a concave arc shape, the axis of the arc shape is parallel to the transverse direction of the air outlet, and 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.
2. The wall-mounted air conditioner indoor unit of claim 1, wherein
The included angle between the air outlet direction of the turning section and the air outlet direction of the main body section is between 5 degrees and 15 degrees.
3. The wall-mounted air conditioner indoor unit of claim 1, wherein
The connecting part of the main body section and 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 between 2 and 3.
4. A wall-mounted air conditioner indoor unit as claimed in claim 3, wherein
The turning section is connected with the bottom wall of the shell through a convex section which is convex outwards.
5. A wall-mounted air conditioner indoor unit as claimed in claim 3, wherein
An arc transition section is arranged between the main body section and the turning section.
6. The wall-mounted air conditioner indoor unit of claim 1, wherein
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 forwards from the lower end of the first section to the upper end of the air outlet; and is also provided with
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.
7. The wall-mounted air conditioner indoor unit of claim 6, wherein
And the included angle between the air outlet direction and the air inlet direction of the second section is smaller than 45 degrees.
8. The wall-mounted air conditioner indoor unit of claim 1, further comprising an air deflector comprising:
the air deflector body is rotatably arranged at the air outlet;
the multi-layer inner air guide plate is arranged on the inner side of the air guide plate body, and is sequentially fixed on the air guide plate body at intervals along the direction away from the inner surface of the air guide plate body so as to guide the air supply flow together with the air guide plate body.
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