Air conditioner indoor unit and air conditioner

Abstract

The utility model provides an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a shell, a cross-flow fan, a heat exchanger and two centrifugal fans. A main air inlet is formed in the front surface of the shell, and mixed air inlets are formed in the two transverse side faces of the shell correspondingly. The shell is further provided with an air outlet. The cross-flow fan is arranged in the shell and used for promoting formation of airflow which enters the indoor unit of the air conditioner from the main air inlet and is blown out from the air outlet. The heat exchanger is arranged between the main air inlet and the cross-flow fan. The two centrifugal fans are respectively arranged at two transverse ends of the cross-flow fan; and each centrifugal fan is used for promoting the formation of airflow which enters the indoor unit of the air conditioner from one mixed air inlet and is blown out from the air outlet. The air conditioner indoor unit is used for solving the problem that the temperature difference between outlet air of the air conditioner indoor unit and ambient air is too large.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to an indoor unit of an air conditioner and an air conditioner. Background Art

[0002] In the hot summer, people generally install air conditioners at home and use the indoor unit of the air conditioner to blow cold air into the room to lower the indoor temperature. Some users prefer to let the air outlet direction of the indoor unit of the air conditioner face the body so that the air flow can take away the heat from the body.

[0003] However, the cold air blown out by the indoor unit of the air conditioner has a significant temperature difference with the ambient temperature and human body temperature. Being blown directly by cold air for a long time will cause the human body temperature to drop and feel cold. In severe cases, it will cause physical discomfort to the user and even cause disease. Utility Model Content

[0004] One aspect of the utility model aims to provide an indoor unit of an air conditioner with an air mixing function, so as to solve the problem that the temperature difference between the air outlet of the indoor unit of the air conditioner and the ambient air is too large.

[0005] Another object of the present invention is to provide an air conditioner that solves the above-mentioned problems.

[0006] According to one aspect of the utility model, the utility model provides an indoor unit of an air conditioner, and the indoor unit of the air conditioner comprises: a shell, a cross-flow fan, a heat exchanger and two centrifugal fans.

[0007] A main air inlet is provided on the front surface of the shell, and mixed air inlets are provided on both lateral sides of the shell respectively; an air outlet is also provided on the shell.

[0008] The cross-flow fan is arranged in the housing and is used to promote the formation of an air flow that enters the indoor unit of the air conditioner from the main air inlet and is blown out from the air outlet.

[0009] The heat exchanger is arranged between the main air inlet and the cross-flow fan.

[0010] Two centrifugal fans are respectively arranged at the two lateral ends of the cross-flow fan; each centrifugal fan is used to promote the formation of an air flow that enters the indoor unit of the air conditioner from a mixed air inlet and is blown out from an air outlet.

[0011] Optionally, the indoor unit of the air conditioner further includes: an air supply duct.

[0012] One end of the air supply duct is connected to the air outlet, and the other end is connected to the crossflow fan and two centrifugal fans, so that the airflows formed by the crossflow fan and the two centrifugal fans are mixed in the air supply duct.

[0013] Optionally, the air conditioner indoor unit further includes: two centrifugal volutes.

[0014] The two centrifugal volutes are respectively arranged outside a centrifugal fan.

[0015] Each centrifugal volute has an axial opening facing a lateral side of the shell and connected to an air mixing inlet, and a radial opening connected to one end of the air supply duct.

[0016] Optionally, the air conditioner indoor unit also includes: a driving motor.

[0017] The driving motor is used to drive the cross-flow fan and two centrifugal fans to rotate.

[0018] And the two centrifugal fans are respectively fixed coaxially with the cross-flow fan, so that the cross-flow fan and the two centrifugal fans rotate synchronously.

[0019] Optionally, a gap is formed between at least one centrifugal fan and the cross-flow fan.

[0020] The driving motor is arranged at the interval between a centrifugal fan and the cross-flow fan, and is coaxially fixed with the cross-flow fan and the two centrifugal fans.

[0021] Optionally, a gap is formed between the two centrifugal fans and the cross-flow fan respectively.

[0022] And the interval widths formed between the two centrifugal fans and the cross-flow fan are equal.

[0023] Optionally, the main air inlet is opened at the upper part of the front surface of the shell, and the air outlet is opened at the lower part of the front surface of the shell. And the air conditioner indoor unit also includes: a first air guide plate.

[0024] The first air guide plate is arranged at the air outlet and has a rotating shaft extending laterally on the upper side of the air outlet, and is used for closing the air outlet or guiding the air outlet direction of the indoor unit of the air conditioner.

[0025] Optionally, the air conditioner indoor unit also includes: a second air guide plate.

[0026] The second air guide plate is arranged in the air supply duct and has a rotating shaft close to the lower side of the air supply duct and extending laterally, and is used for guiding the air outlet direction of the indoor unit of the air conditioner.

[0027] Optionally, the air conditioner indoor unit also includes: a third air guide plate group.

[0028] The third air guide plate group is arranged in the air supply duct and includes a plurality of third air guide plates distributed in the transverse direction; each third air guide plate has a longitudinally extending rotation axis for guiding the air outlet direction of the indoor unit of the air conditioner.

[0029] According to another aspect of the utility model, the utility model provides an air conditioner.

[0030] The air conditioner comprises any one of the above-mentioned air conditioner indoor units.

[0031] The indoor unit of the air conditioner of the utility model comprises a shell, a crossflow fan, a heat exchanger and two centrifugal fans. A main air inlet is provided on the front surface of the shell, and mixed air inlets are provided on the two lateral sides of the shell respectively; an air outlet is also provided on the shell. The crossflow fan is arranged in the shell, and is used to promote the formation of an air flow that enters the indoor unit of the air conditioner from the main air inlet and is blown out from the air outlet. The heat exchanger is arranged between the main air inlet and the crossflow fan. Two centrifugal fans are respectively arranged at the lateral ends of the crossflow fan; each centrifugal fan is used to promote the formation of an air flow that enters the indoor unit of the air conditioner from a mixed air inlet and is blown out from the air outlet.

[0032] The cross-flow fan forces the airflow to enter the indoor unit of the air conditioner from the main air inlet, passes through the heat exchanger for heat exchange, and then blows out the air outlet. At the same time, the two centrifugal fans force the airflow to enter the indoor unit of the air conditioner from the mixed air inlet, and blow it directly out the air outlet without heat exchange in the heat exchanger. The airflows formed by the cross-flow fan and the two centrifugal fans are mixed and then blown out of the air outlet, so the temperature difference between the airflow temperature blown out of the indoor unit of the air conditioner and the ambient temperature is smaller.

[0033] Based on the detailed description of some specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0035] Figure 1 is a schematic diagram of an indoor unit of an air conditioner according to an embodiment of the utility model;

[0036] Figure 2 yes Figure 1 A partial schematic diagram of an indoor unit of an air conditioner is shown;

[0037] Figure 3 yes Figure 1 A cross-sectional schematic diagram of an indoor unit of an air conditioner is shown;

[0038] Figure 4 It is a schematic diagram of an air conditioner according to an embodiment of the utility model. DETAILED DESCRIPTION

[0039] In the description of this embodiment, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the utility model.

[0040] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, it is defined that the features "first", "second", etc. may explicitly or implicitly include at least one of the features, that is, include one or more of the features.

[0041] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0042] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "coupled" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0043] Furthermore, in the description of this embodiment, a first feature being “above” or “below” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0044] That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the description of the embodiments of the present invention have the same meanings as those commonly understood by ordinary technicians in the technical field to which the present application belongs.

[0046] Figure 1 is a schematic diagram of an air conditioner indoor unit 20 according to an embodiment of the utility model; Figure 2 yes Figure 1 A partial schematic diagram of an indoor unit 20 of an air conditioner is shown.

[0047] The present embodiment provides an air conditioner indoor unit 20, which includes a housing 21, a cross-flow fan 22, a heat exchanger 23, and two centrifugal fans (not shown in the figure).

[0048] refer to Figure 1 and Figure 2 As shown, a main air inlet 21A is provided on the front surface of the housing 21, and mixed air inlets 21B are provided on both lateral sides of the housing 21; an air outlet is also provided on the housing 21. A crossflow fan 22 is arranged in the housing 21, and is used to promote the formation of an air flow that enters the air conditioner indoor unit 20 from the main air inlet 21A and is blown out from the air outlet. A heat exchanger 23 is arranged between the main air inlet 21A and the crossflow fan 22. Two centrifugal fans are respectively arranged at the lateral ends of the crossflow fan 22; each centrifugal fan is used to promote the formation of an air flow that enters the air conditioner indoor unit 20 from a mixed air inlet 21B and is blown out from the air outlet.

[0049] Figure 1 Due to the viewing angle, only the air mixing inlet 21B opened on one lateral side of the housing 21 is shown. It can be understood that Figure 1 The housing 21 is also provided with a mixed air inlet 21B on the other lateral side thereof which is not shown. The shape of the mixed air inlet 21B can be as follows: Figure 1 The one shown is a circular opening, but it may also be a plurality of small-sized through holes of any shape distributed on the side surface of the housing 21, which is not limited here.

[0050] Figure 2 Indicated Figure 1 The air conditioner indoor unit 20 of the embodiment includes a partial structure including a cross-flow fan 22 and a centrifugal fan, wherein the centrifugal fan needs to work in coordination with the centrifugal volute 24, and the centrifugal fan is arranged in the centrifugal volute 24. Figure 2 Only the centrifugal volute 24 is shown in the figure, but the centrifugal fan is not shown. It can be understood that the centrifugal fan is hidden inside the centrifugal volute 24.

[0051] The cross-flow fan 22 of the air conditioner indoor unit 20 of the present embodiment causes the formed air flow to enter the air conditioner indoor unit 20 from the main air inlet 21A, and blow out the air outlet after passing through the heat exchanger 23 for heat exchange. At the same time, the two centrifugal fans cause the formed air flow to enter the air conditioner indoor unit 20 from the mixed air inlet 21B, and blow out the air outlet directly without heat exchange through the heat exchanger 23. The air flow caused by the cross-flow fan 22 and the two centrifugal fans is mixed and blown out of the air outlet, so the temperature difference between the air flow temperature blown out of the air conditioner indoor unit 20 and the ambient temperature is smaller.

[0052] In some optional implementations, the air conditioner indoor unit 20 further includes: an air supply duct 25 .

[0053] One end of the air supply duct 25 is connected to the air outlet, and the other end is connected to the crossflow fan 22 and two centrifugal fans, so that the airflows formed by the crossflow fan 22 and the two centrifugal fans are mixed in the air supply duct 25 .

[0054] The air supply duct 25 of this embodiment is located at one end inside the housing 21 and is connected to the crossflow fan 22 and the two centrifugal fans at the same time, that is, it receives and guides the airflows blown from the crossflow fan 22 and the two centrifugal fans at the same time. The heat exchange airflow from the crossflow fan 22 that has been heat exchanged by the heat exchanger 23 and the ambient airflow from the two centrifugal fans that has not been heat exchanged can be mixed in the air supply duct 25, so that the air conditioner indoor unit 20 can blow out the mixed airflow at the air outlet. Even if the user is in a position close to the air outlet of the air conditioner indoor unit 20, he will not be directly blown by the airflow with a large temperature difference, so he feels more comfortable.

[0055] In some optional embodiments, the air conditioner indoor unit 20 may also be provided with multiple air supply ducts 25 in the shell 21, and each air supply duct 25 is respectively connected to a cross-flow fan 22 or a centrifugal fan, so that the airflows blown out by the cross-flow fan 22 and the two centrifugal fans are mixed after being blown out of the outlet.

[0056] In some optional implementations, the air conditioner indoor unit 20 further includes: two centrifugal volutes 24 .

[0057] The two centrifugal volutes 24 are respectively arranged outside a centrifugal fan, and each centrifugal volute 24 has an axial opening 24B facing a lateral side of the housing 21 and connected to an air mixing inlet 21B, and a radial opening 24C connected to one end of the air supply duct 25 .

[0058] refer to Figure 2As shown, the centrifugal volute 24 of the embodiment is provided with two openings, wherein the axial opening 24B is provided at one end of the centrifugal fan along the axial direction of the centrifugal fan and serves as the air inlet of the centrifugal fan when the centrifugal fan rotates. The radial opening 24C is provided at one side of the centrifugal fan along the rotation direction of the centrifugal fan and serves as the air outlet of the centrifugal fan when the centrifugal fan rotates.

[0059] The axial opening 24B on each centrifugal volute 24 is connected to the air mixing inlet 21B opened on the side of the housing 21 on the same side, so that the centrifugal fan can suck in ambient air through the air mixing inlet 21B. The radial opening 24C on each centrifugal volute 24 is connected to one end of the air supply duct 25 in the housing 21, so that the centrifugal fan can blow air into the air supply duct 25.

[0060] In some optional implementations, the air conditioner indoor unit 20 further includes: a driving motor 26 .

[0061] The driving motor 26 is used to drive the crossflow fan 22 and the two centrifugal fans to rotate. The two centrifugal fans are coaxially fixed to the crossflow fan 22, so that the crossflow fan 22 and the two centrifugal fans rotate synchronously.

[0062] refer to Figure 2 As shown, the air conditioner indoor unit 20 of this embodiment also fixes the two centrifugal fans coaxially with the cross-flow fan 22, so that only one driving motor 26 is required to drive the cross-flow fan 22 and the two centrifugal fans to rotate synchronously at the same time.

[0063] Two centrifugal fans can be used together with the cross flow fan 22 as shown in FIG. Figure 2 In some optional embodiments, the blades of the two centrifugal fans may be connected and fixed to the blades of the crossflow fan 22, so that the crossflow fan 22 rotates synchronously with the two centrifugal fans.

[0064] However, in some optional embodiments, the two centrifugal fans may also be arranged coaxially with the crossflow fan 22, for example, the two centrifugal fans and the crossflow fan 22 may each be connected to the drive motor 26 through a transmission structure, or the drive motor 26 may be coaxially fixed to one of the two centrifugal fans and the crossflow fan 22, and connected to the other two through a transmission structure. In some optional embodiments, the rotation axes of the two centrifugal fans may not be arranged parallel to the crossflow fan 22, that is, the axial opening 24B on the centrifugal volute 24 may not be directly opposite to the lateral side of the shell 21, but the extension direction of the axial opening 24B may form an inclined angle or even be parallel to the lateral side of the shell 21. The centrifugal fan and the crossflow fan 22 of this embodiment may each be driven to rotate by an independent drive motor 26, that is, as needed, the number of drive motors 26 may not be limited to one.

[0065] In some optional embodiments, a gap is formed between at least one centrifugal fan and the cross-flow fan 22 .

[0066] The drive motor 26 is disposed at a gap between a centrifugal fan and the cross-flow fan 22 , and is coaxially fixed with the cross-flow fan 22 and the two centrifugal fans.

[0067] refer to Figure 2 As shown, the air conditioner indoor unit 20 of this embodiment is further provided with a drive motor 26 coaxially fixed with the two centrifugal fans and the cross-flow fan 22 on the basis of two centrifugal fans respectively fixed coaxially with the cross-flow fan 22, so that the drive motor 26 directly drives the two centrifugal fans and the cross-flow fan 22 to rotate synchronously.

[0068] In other optional embodiments, the drive motor 26 may also be connected to the two centrifugal fans and the crossflow fan 22 through a transmission structure, thereby driving the two centrifugal fans and the crossflow fan 22 to rotate synchronously. The transmission structure may include various transmission structures such as gears, transmission shafts, transmission belts, and combinations thereof.

[0069] In some optional embodiments, a gap is formed between the two centrifugal fans and the cross-flow fan 22 respectively.

[0070] Furthermore, the interval widths formed between the two centrifugal fans and the cross-flow fan 22 are equal.

[0071] refer to Figure 2 As shown, in the air conditioner indoor unit 20 of this embodiment, when the driving motor 26 is set at the interval between a centrifugal fan and a cross-flow fan 22, a interval is also formed between the centrifugal fan and the cross-flow fan 22 on the other side where the driving motor 26 is not set, so that the centrifugal fans on both sides are at the same distance from the cross-flow fan 22, so that the air outlet of the air conditioner indoor unit 20 can discharge air evenly from left to right, and there will be no situation where the air volume is large on one side and small on the other side.

[0072] The air conditioner indoor unit 20 of this embodiment can be an embedded air conditioner indoor unit 20, that is, the air conditioner indoor unit 20 is embedded in the cabinet. Different from the traditional wall-mounted air conditioner indoor unit 20, the embedded air conditioner indoor unit 20 is embedded in the cabinet, so that the air conditioner indoor unit 20 is hidden in appearance, making the home layout more beautiful.

[0073] refer to Figure 3As shown, in order to adapt to the opening of the cabinet, the air conditioner indoor unit 20 of this embodiment is provided with a main air inlet 21A at the upper part of the front surface of the shell 21, and an air outlet is provided at the lower part of the front surface. That is to say, the main air inlet 21A and the air outlet are provided on the front surface of the shell 21 at the same time, that is, the air inlet and outlet of the air conditioner indoor unit 20 are located on the same side and correspond to the opening position of the cabinet, so that the air conditioner indoor unit 20 takes in and out air from the front side at the same time.

[0074] refer to Figure 3 As shown, in some optional embodiments, the air conditioner indoor unit 20 further includes a first air guide plate 27. The first air guide plate 27 is disposed at the air outlet and has a rotation axis extending laterally above the air outlet, and is used to close the air outlet or guide the air outlet direction of the air conditioner indoor unit 20. And in some optional embodiments, the surface of the first air guide plate 27 is bent toward the air outlet at the rotation end.

[0075] Figure 3 The figure shows a position of the first air guide plate 27 when it is in the open state. The first air guide plate 27 of this embodiment is turned upward around the rotation axis of its fixed end, and uses its own plate body to separate the main air inlet 21A from the air outlet. Therefore, when the first air guide plate 27 of this embodiment is opened, it can not only guide the outlet air flow by adjusting the rotation height and change the outlet distance, but also separate the main air inlet 21A and the air outlet on its upper and lower sides, so as to prevent the main air inlet 21A from directly sucking the heat exchange air flow blown out from the air outlet back into the air conditioner indoor unit 20, thereby optimizing the air inlet and outlet effects of the air conditioner indoor unit 20 and improving the heat exchange efficiency and air supply effect.

[0076] Figure 3 Arrows are also used to indicate the direction of airflow at the air outlet guided by the first air guide plate 27. The first air guide plate 27 of this embodiment is bent toward the air outlet at the rotation end away from its rotation axis, so that the surface forms a concave arc surface. When the first air guide plate 27 is opened and the air conditioner indoor unit 20 is discharging air, the direction of the airflow at the air outlet is guided to tilt downward along the arc surface.

[0077] Since the air outlet of the embedded air conditioner indoor unit 20 is located at the front side thereof, the shape of the first air guide plate 27 of the present embodiment can ensure that the airflow can be blown obliquely downward when the opening of the air outlet is large, so as to avoid the situation where the air supply height of the air conditioner indoor unit 20 is too high and cannot meet the direct blowing requirements of some users. In addition, the airflow blown from the air outlet tends to flow away from the main air inlet 21A due to the guidance of the first air guide plate 27, so it also has a certain effect on preventing the airflow blown from the air outlet from being directly sucked into the main air inlet 21A again.

[0078] In some optional embodiments, a plurality of air inlet grilles 212 extending laterally are formed on the front surface of the shell 21 at the main air inlet 21A; and each air inlet grille 212 is inclined downward toward the air conditioner indoor unit 20, thereby guiding the airflow from the main air inlet 21A into the air conditioner indoor unit 20 in an inclined downward direction.

[0079] Figure 3 Arrows are also used to indicate the direction of air flow at the main air inlet 21A. Figure 3 As shown, the front surface of the shell 21 of this embodiment forms a plurality of transversely extending air inlet grilles 212 at the main air inlet 21A, and the air inlet grilles 212 are parallel and juxtaposed in the longitudinal direction, so that an air inlet gap extending obliquely downward toward the interior of the air conditioner indoor unit 20 is formed between two adjacent air inlet grilles 212 in the longitudinal direction, and the air flow enters the air conditioner indoor unit 20 from the main air inlet 21A in the oblique downward direction.

[0080] The air inlet grille 212 at the main air inlet 21A can be either a continuous line or multiple intervals in the horizontal direction.

[0081] As Figure 3 As indicated by the middle arrow, the air inlet grille 212 of the present embodiment guides the airflow at the main air inlet 21A to tend to enter the main air inlet 21A obliquely downward from the upper side, thereby preventing the airflow at the main air inlet 21A from convection with the air flow at the air outlet and the airflow blown out of the air outlet from being directly sucked into the main air inlet 21A again.

[0082] In some optional embodiments, the main air inlet 21A on the front surface of the shell 21 is spaced apart in height from the air outlet, so that there is a certain distance between the lower end of the main air inlet 21A and the air outlet and the first air guide plate 27 when in the open state, thereby further separating the main air inlet 21A and the air outlet, preventing the airflow blown out of the air outlet from being directly sucked into the main air inlet 21A again, and reducing the convection between the airflow at the main air inlet 21A and the air outlet.

[0083] The reason why condensation is easily formed at the air guide plate of the indoor unit 20 of the air conditioner is that the air guide plate has a low temperature under the influence of the heat exchange airflow. When it contacts the ambient air with a higher temperature, it is easy to cause the moisture in the ambient air to condense on the air guide plate and form condensation. When the airflow at the main air inlet 21A forms convection with the airflow at the air outlet, the upper surface of the first air guide plate 27 in the open state will contact more moisture in the ambient air with the airflow at the main air inlet 21A and condensation is more likely to occur.

[0084] Therefore, the utility model sets the rotating end of the first air guide plate 27 to be bent toward the air outlet, each air inlet grille 212 is tilted downward toward the air conditioner indoor unit 20, or the main air inlet 21A on the front surface of the shell 21 is spaced apart from the air outlet in height, so that the airflow at the main air inlet 21A and the air outlet are separated in the flow direction, thereby reducing the convection between the airflow at the main air inlet 21A and the air outlet, so as to reduce or even avoid the formation of condensation on the surface of the first air guide plate 27.

[0085] In some optional embodiments, the air conditioner indoor unit 20 can simultaneously be configured such that the rotating end of the first air guide plate 27 is bent toward the air outlet, each air inlet grille 212 is inclined downward toward the air conditioner indoor unit 20, and the main air inlet 21A on the front surface of the shell 21 is spaced in height from the air outlet, so as to maximize the anti-condensation effect of the air guide plate of the air conditioner indoor unit 20.

[0086] In some optional implementations, the air conditioner indoor unit 20 further includes: a second air guide plate 28 .

[0087] The second air guide plate 28 is disposed in the air supply duct 25 and has a rotation axis close to the lower surface of the air supply duct 25 and extending laterally, and is used to guide the air outlet direction of the air conditioner indoor unit 20.

[0088] refer to Figure 3 As shown, the air supply duct 25 of this embodiment is connected to the air outlet at one end and connected to the crossflow fan 22 at the other end, so as to guide the airflow formed by the crossflow fan 22 to blow toward the air outlet. The first air guide plate 27 is arranged at the air outlet, and the two ends of its rotating shaft are connected to the two lateral walls of the air supply duct 25. The second air guide plate 28 is arranged close to the lower surface of the air supply duct 25, and the two ends of its rotating shaft can also be connected to the two lateral walls of the air supply duct 25.

[0089] The second air guide plate 28 can swing upward from a position close to the lower surface of the air supply duct 25, so as to adjust the air outlet height of the air conditioner indoor unit 20. When the swing height of the second air guide plate 28 is high, the size of the air outlet can also be reduced, so as to change the distance of the air outlet and the perceived wind speed in accordance with the change in the rotation speed of the cross-flow fan 22. For example, when the rotation speed of the cross-flow fan 22 remains unchanged, when the swing height of the second air guide plate 28 is high and the air outlet is reduced, the actual air outlet speed of the air conditioner indoor unit 20 becomes faster due to the reduction of the air outlet. When the rotation speed of the cross-flow fan 22 decreases, the actual air outlet speed of the air conditioner indoor unit 20 can be maintained stable by reducing the size of the air outlet by swinging the second air guide plate 28, so as to reduce the air supply volume of the air conditioner indoor unit 20 when the perceived wind speed remains basically unchanged, so as to adjust the ambient temperature.

[0090] In some optional embodiments, the air conditioner indoor unit 20 further includes a third air guide plate group.

[0091] The third air guide plate group is arranged in the air supply duct 25 and includes a plurality of third air guide plates 29 distributed in the transverse direction; each third air guide plate 29 has a longitudinally extending rotation axis for guiding the air outlet direction of the air conditioner indoor unit 20.

[0092] Figure 3 Only one third air guide plate 29 in the third air guide plate group can be seen, but it can be understood that multiple third air guide plates 29 of this embodiment are arranged side by side in the air supply duct 25. In some optional embodiments, multiple third air guide plates 29 in the third air guide plate group can be synchronously controlled to rotate and adjust the lateral air outlet direction of the air conditioner indoor unit 20.

[0093] exist Figure 3 In the illustrated embodiment, the third air guide plate group is disposed on the lower surface of the air supply duct 25 , while in other optional implementations, the third air guide plate group may also be disposed on the upper surface of the air supply duct 25 .

[0094] In some optional embodiments, the air conditioner indoor unit 20 further includes an air inlet baffle 214 .

[0095] The air inlet baffle 214 is horizontally arranged in the shell 21, with one end close to the main air inlet 21A and the other end close to the heat exchanger 23, thereby dividing the airflow entering the air conditioner indoor unit 20 from the main air inlet 21A into two parts, upper and lower parts.

[0096] refer to Figure 3 As shown, in order to improve the heat exchange efficiency, the air conditioner indoor unit 20 of this embodiment has a heat exchanger 23 arranged on the upper peripheral side of the cross-flow fan 22, wherein part of the heat exchanger 23 is close to and faces the main air inlet 21A of the air conditioner indoor unit 20, while another part of the heat exchanger 23 is away from the air outlet due to being bent backward and downward.

[0097] In order to prevent the incoming air flow from only passing through the front half of the heat exchanger 23 close to the main air inlet 21A, resulting in the rear half of the heat exchanger 23 not participating in or participating less in the heat exchange, an air inlet baffle 214 is particularly arranged in the shell 21, with one end of the air inlet baffle 214 close to the main air inlet 21A, and the other end close to the heat exchanger 23, thereby dividing the airflow entering the air conditioner indoor unit 20 from the main air inlet 21A into two parts, the upper and lower parts.

[0098] The air conditioner indoor unit 20 of this embodiment utilizes the spacing of the air inlet baffle 214 to allow the airflow entering the air conditioner indoor unit 20 from the lower main air inlet 21A to pass through the front heat exchanger 23, while also ensuring that the airflow entering the air conditioner indoor unit 20 from the upper main air inlet 21A can flow to and pass through the rear heat exchanger 23, thereby making full use of the heat exchanger 23 and avoiding the accumulation of cold.

[0099] In this embodiment, a gap is formed between the upper end of the heat exchanger 23 and the upper part of the shell 21 to allow air flow to pass through, and the end of the air inlet baffle 214 can be close to the upper end of the heat exchanger 23, thereby dividing the heat exchanger 23 into two parts, front and rear, and ensuring that the air flow entering from the main air inlet 21A in the upper part is guided to the rear half of the heat exchanger 23.

[0100] In the embodiment where an air inlet grille 212 is formed on the front surface of the housing 21 at the main air inlet 21A, an end of the air inlet partition plate 214 may abut against one of the air inlet grilles 212 .

[0101] In some embodiments of the present application, the air inlet baffle 214 may not be horizontally arranged in the housing 21, that is, it may be inclined or bent, and the airflow entering the air conditioner indoor unit 20 from the main air inlet 21A may also be divided into upper and lower parts. However, the above embodiment may affect the normal flow of the airflow and cause the air intake efficiency of the air conditioner indoor unit 20 to decrease, and therefore it is generally not the most preferred embodiment.

[0102] In some optional embodiments, the heat exchanger 23 may also be Figure 3 The embodiment shown is arranged on the upper peripheral side of the cross-flow fan 22, for example, it can be arranged in the shell 21 longitudinally or in other ways, and the air inlet baffle 214 can also be correspondingly arranged with its end located in the middle of the height of the heat exchanger 23, thereby dividing the heat exchanger 23 into two upper and lower parts opposite to the main air inlet 21A.

[0103] Figure 4 1 is a schematic diagram of an air conditioner 10 according to an embodiment of the present invention.

[0104] The air conditioner 10 of this embodiment includes an air conditioner indoor unit 20, and also includes an air conditioner outdoor unit 10, and a refrigerant pipeline connecting the two. The compressor, condenser, and throttling device in the air conditioner outdoor unit 10 are connected to the evaporator in the air conditioner indoor unit 20 through the refrigerant pipeline, and together with other necessary components, constitute the refrigeration cycle system of the air conditioner 10. On one side of the air conditioner indoor unit 20, it can not only cool and blow refrigeration airflow, but also have a heating function and blow heating airflow.

[0105] The air conditioner indoor unit 20 of this embodiment, as the indoor part of the air conditioner 10, can have not only cooling and heating functions, but also additional functions such as dehumidification, humidification, air purification, and introduction of fresh air to the indoor environment.

[0106] The air conditioner indoor unit 20 of this embodiment has the main air inlet 21A and the air outlet arranged on the front surface of the shell 21, so that the air conditioner indoor unit 20 takes in and exhausts air from the front at the same time. Therefore, it is particularly suitable for being embedded in a cabinet for use, that is, used as an embedded air conditioner indoor unit 20.

[0107] In the embodiment where the air conditioner 10 is an embedded air conditioner 10, the cabinet for placing the air conditioner indoor unit 20 can be various cabinets, which can be used for storage. The utility model does not limit the specific use of the cabinet. For example, the cabinet can be used for household purposes, and can be specifically applied to the kitchen, bathroom, living room or bedroom. For example, the cabinet can be used to be set in the kitchen to accommodate the air conditioner indoor unit 20.

[0108] However, the air conditioner 10 of this embodiment is not limited to the embedded air conditioner 10. The air conditioner indoor unit 20 can be the indoor part of the embedded air conditioner 10 installed in various cabinets or the indoor terminal model of the central air conditioner 10, or it can be the indoor part of the wall-mounted air conditioner 10 or other air conditioner indoor unit 20, which is not limited here.

[0109] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

[0110] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, devices, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, devices, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An air conditioner indoor unit, characterized in that include: A housing; a main air inlet is provided on the front surface of the housing, and mixed air inlets are provided on both lateral sides of the housing; an air outlet is also provided on the housing; A cross-flow fan is disposed in the housing and is used to promote the formation of an air flow that enters the indoor unit of the air conditioner from the main air inlet and is blown out from the air outlet; a heat exchanger, disposed between the main air inlet and the crossflow fan; as well as Two centrifugal fans are respectively arranged at the two lateral ends of the cross-flow fan; each of the centrifugal fans is used to promote the formation of an air flow that enters the indoor unit of the air conditioner from the mixed air inlet and is blown out from the air outlet.

2. The air conditioner indoor unit according to claim 1, characterized in that Also includes: The air supply duct has one end connected to the air outlet and one end connected to the crossflow fan and the two centrifugal fans, so that the airflows formed by the crossflow fan and the two centrifugal fans are mixed in the air supply duct.

3. The air conditioner indoor unit according to claim 2, characterized in that Also includes: Two centrifugal volutes are respectively arranged outside one of the centrifugal fans; and Each of the centrifugal volutes has an axial opening facing a lateral side of the shell and connected to one of the air mixing inlets, and a radial opening connected to one end of the air supply duct.

4. The air conditioner indoor unit according to claim 2, characterized in that Also includes: A driving motor, used for driving the crossflow fan and the two centrifugal fans to rotate; and The two centrifugal fans are respectively coaxially fixed with the cross-flow fans, so that the cross-flow fans and the two centrifugal fans rotate synchronously.

5. The air conditioner indoor unit according to claim 4, characterized in that: A gap is formed between at least one of the centrifugal fans and the crossflow fan; The driving motor is arranged at a gap between one of the centrifugal fans and the cross-flow fans, and is coaxially fixed with the cross-flow fan and the two centrifugal fans.

6. The air conditioner indoor unit according to claim 5, characterized in that: The two centrifugal fans are spaced apart from the cross-flow fans respectively; and The intervals formed between the two centrifugal fans and the cross-flow fan are equal in width.

7. The air conditioner indoor unit according to claim 1, characterized in that Also includes: The main air inlet is opened at the upper part of the front surface of the shell, and the air outlet is opened at the lower part of the front surface of the shell; and The air conditioner indoor unit also includes: The first air guide plate is arranged at the air outlet and has a rotating shaft extending laterally above the air outlet, and is used for closing the air outlet or guiding the air outlet direction of the indoor unit of the air conditioner.

8. The air conditioner indoor unit according to claim 2, characterized in that: The second air guide plate is arranged in the air supply duct and has a rotating shaft close to the lower side of the air supply duct and extending laterally, and is used to guide the air outlet direction of the indoor unit of the air conditioner.

9. The indoor unit of the air conditioner according to claim 2, characterized in that Also includes: The third air guide plate group is arranged in the air supply duct and includes a plurality of third air guide plates distributed in the transverse direction; each of the third air guide plates has a longitudinally extending rotation axis for guiding the air outlet direction of the indoor unit of the air conditioner.

10. An air conditioner, characterized in that include: An air conditioner indoor unit according to any one of claims 1 to 9.

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