Air conditioner

Abstract

The utility model discloses an air conditioner, include: casing, heat exchanger, air duct spare, motor and a plurality of centrifugal fan wheel, the bottom wall of casing is equipped with lower air outlet, and the front side of casing is equipped with front air outlet, and air duct spare is located the side of heat exchanger towards front air outlet to towards front air outlet and lower air outlet air guide, and a plurality of centrifugal fan wheel is established in air duct spare, and lower air outlet corresponds at least one centrifugal fan wheel, and front air outlet corresponds at least one centrifugal fan wheel, and a plurality of centrifugal fan wheel is established in same drive shaft to by drive shaft drive synchronous rotation, and motor cooperates with drive shaft. By setting lower air outlet and front air outlet respectively, so that air conditioner can realize the air outlet of different direction, be favorable to improve the heat exchange uniformity of air conditioner, and lower air outlet can improve the floor property of hot air, be favorable to improve the heating effect of air conditioner to external environment, and a plurality of centrifugal fan wheel is established in same drive shaft, be favorable to improve the drive convenience of a plurality of centrifugal fan wheel, and be favorable to simplify the structure of air conditioner.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air conditioner. Background Technology

[0002] In related technologies, wall-mounted air conditioners typically use cross-flow fans and long air outlets to accommodate them, resulting in poor airflow performance and potentially affecting the heating performance of the unit. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an air conditioner with good airflow performance and improved heating efficiency.

[0004] An air conditioner according to an embodiment of the present invention includes: a housing having an air inlet area, a lower air outlet on the bottom wall of the housing, and a front air outlet on the front side of the housing; a heat exchanger and an air duct component, the heat exchanger and the air duct component being respectively disposed within the housing, the air duct component being located on the side of the heat exchanger facing the front air outlet to guide air towards the front air outlet and the lower air outlet; a plurality of centrifugal impellers, the plurality of centrifugal impellers being disposed within the air duct component, the lower air outlet corresponding to at least one centrifugal impeller, the front air outlet corresponding to at least one centrifugal impeller, the plurality of centrifugal impellers being disposed on the same drive shaft to be driven synchronously by the drive shaft; and a motor cooperating with the drive shaft to drive the drive shaft to rotate.

[0005] According to the embodiments of this utility model, the air conditioner, by separately setting a lower air outlet and a front air outlet, enables the air conditioner to output air in different directions, which is beneficial to improving the uniformity of heat exchange with the external environment. Furthermore, the lower air outlet can improve the grounding of hot air, thereby reducing the temperature difference between the air conditioner and the external environment when the air conditioner is heating, thus improving the heating effect of the air conditioner and enhancing the user comfort. In addition, by setting a centrifugal fan, it is beneficial to increase the air outlet speed of the air conditioner, thereby increasing the air delivery distance of the air conditioner and improving the heat exchange effect. Moreover, multiple centrifugal fans are set on the same drive shaft, which is beneficial to improve the driving convenience of multiple centrifugal fans and eliminates the need for multiple motors, which helps to simplify the structure of the air conditioner, reduce the production cost and assembly difficulty.

[0006] According to some embodiments of the present invention, the lower air outlet is located on the side of the front air outlet near the middle of the housing.

[0007] According to some embodiments of the present invention, there are multiple lower air outlets located in the middle of the housing.

[0008] According to some embodiments of the present invention, the front air outlet is provided with multiple outlets, and the multiple front air outlets are distributed on both sides of the multiple lower air outlets.

[0009] According to some embodiments of this utility model, the total opening area A of the lower air outlet and the total opening area B of the front air outlet satisfy the relationship: 1≤A / B≤1.5.

[0010] According to some embodiments of the present invention, the air duct component has a first air guide section extending toward the lower air outlet, the first air guide section extending obliquely in a forward and downward direction, and the air duct component has a second air guide section extending toward the front air outlet, the second air guide section extending obliquely in a forward and upward direction.

[0011] According to some embodiments of the present invention, the angle between the central axis of the first air guide section and the horizontal plane is 45°-70°.

[0012] According to some embodiments of the present invention, the angle between the central axis of the second air guide section and the horizontal plane is 0°-30°.

[0013] According to some embodiments of the present invention, the air duct component includes a plurality of spaced-apart volutes, each of which is corresponding to a plurality of centrifugal impellers, and each volute is used to guide air to the corresponding lower air outlet or the front air outlet.

[0014] According to some embodiments of the present invention, the air conditioner further includes: a bearing housing, the bearing housing and the motor being distributed on both sides of the plurality of centrifugal impellers, one end of the drive shaft being connected to the motor and the other end being supported on the bearing housing.

[0015] According to some embodiments of the present invention, the housing includes: a chassis; a front frame, the front frame being disposed on the front side of the chassis, and the front frame having the air inlet area and the lower air outlet respectively formed thereon; and a panel, the panel being disposed on the front side of the front frame, and the panel having the front air outlet formed thereon.

[0016] According to some embodiments of the present invention, the chassis and the face frame are formed as an integral part.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1This is a schematic diagram of the structure of the air conditioner described in the embodiment of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the air conditioner described in the embodiment of this utility model. Figure 2 ; Figure 3 This is a cross-sectional view of the air conditioner at the lower air outlet according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the air conditioner at the front air outlet according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the air conditioner described in an embodiment of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the internal structure of the air conditioner described in an embodiment of the present invention. Figure 2 ; Figure 7 This is a top view of the flow field distribution of the air conditioner described in this embodiment of the present invention.

[0019] Figure label: Air conditioner 100 Housing 110, air inlet area 111, lower air outlet 112, front air outlet 113, front frame 114, panel 115, air inlet grille 116 Heat exchanger 120 Air duct component 130, first air guide section 131, second air guide section 132, volute 133. Centrifugal fan 140 Drive shaft 150 Motor 160 Bearing housing 170, motor cover 180. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following reference Figures 1-7 This invention describes an air conditioner 100 according to an embodiment of the present invention.

[0023] Combination Figure 1 , Figure 2 , Figure 5 and Figure 6 According to an embodiment of the present invention, an air conditioner 100 includes: a housing 110, a heat exchanger 120, an air duct component 130, and a plurality of centrifugal impellers 140. The housing 110 is provided with an air inlet area 111, the bottom wall of the housing 110 is provided with a lower air outlet 112, and the front side of the housing 110 is provided with a front air outlet 113. The heat exchanger 120 and the air duct component 130 are respectively disposed in the housing 110. The air duct component 130 is located on the side of the heat exchanger 120 facing the front air outlet 113 to guide air towards the front air outlet 113 and the lower air outlet 112. A plurality of centrifugal impellers 140 are disposed in the air duct component 130. The lower air outlet 112 corresponds to at least one centrifugal impeller 140, and the front air outlet 113 corresponds to at least one centrifugal impeller 140. The plurality of centrifugal impellers 140 are all disposed on the same drive shaft 150 so that they are driven by the drive shaft 150 to rotate synchronously.

[0024] For example, when the centrifugal impeller 140 rotates, a negative pressure is formed inside the housing 110. Airflow from the external environment can be drawn into the housing 110 through the air inlet area 111. The airflow entering the housing 110 exchanges heat with the heat exchanger 120 as it flows through it. The airflow after heat exchange can flow into the air duct 130. Driven by the centrifugal impeller 140 and guided by the air duct 130, the airflow in the air duct 130 flows towards the front air outlet 113 and the lower air outlet 112, so that the air conditioner 100 can achieve forward and downward airflow, which helps to improve the heat exchange uniformity of the air conditioner 100 to the external environment and improve the air quality. The air conditioner 100 improves user comfort, thus enhancing the user experience. Furthermore, when the air conditioner 100 heats the external environment, the heat exchanger 120 heats the airflow passing through it. At this time, the air conditioner 100 outputs hot air. Considering the low density of hot air, it tends to rise. By setting a lower air outlet 112, the hot air discharged from the lower air outlet 112 can form a downward airflow field, which helps to suppress the rising of hot air, improves the grounding of hot air, and reduces the temperature difference between the upper and lower parts of the external environment. This helps to reduce the head-to-toe temperature difference, improves the heating uniformity of the air conditioner 100, and further enhances the user comfort of the air conditioner 100.

[0025] It should be noted that "external environment" can be understood as the environment outside the casing 110 of the air conditioner 100, which can be the indoor environment.

[0026] In some examples, there may be two centrifugal impellers 140, with the lower air outlet 112 corresponding to one of the two centrifugal impellers 140 and the front air outlet 113 corresponding to the other centrifugal impeller 140. In other examples, there may be three centrifugal impellers 140, with the lower air outlet 112 corresponding to two of the three centrifugal impellers 140 and the front air outlet 113 corresponding to the other centrifugal impeller 140. Alternatively, the lower air outlet 112 may correspond to one of the three centrifugal impellers 140, and the front air outlet 113 may correspond to the other centrifugal impeller 140. Two centrifugal impellers 140 are provided; in some other examples, four centrifugal impellers 140 can be provided, with the lower air outlet 112 corresponding to two of the four centrifugal impellers 140, and the front air outlet 113 corresponding to the other two centrifugal impellers 140; in other examples, the lower air outlet 112 and the front air outlet 113 can simultaneously correspond to multiple centrifugal impellers 140, which can also be understood as each centrifugal impeller 140 being provided with a lower air outlet 112 and a front air outlet 113; it is understood that the specific arrangement of multiple centrifugal impellers 140 with the lower air outlet 112 and the front air outlet 113 can be determined according to actual production requirements, and is not specifically limited here.

[0027] Further reference Figure 6 The air conditioner 100 also includes a motor 160, which cooperates with the drive shaft 150 to drive the drive shaft 150 to rotate.

[0028] For example, the motor 160 can directly cooperate with the drive shaft 150 so that the motor 160 can drive the drive shaft 150 to rotate, thereby driving the multiple centrifugal impellers 140 disposed on the drive shaft 150 to rotate synchronously; or, the motor 160 can cooperate with the centrifugal impeller 140 disposed adjacent to it so that the motor 160 can drive the centrifugal impeller 140 to rotate, thereby driving the drive shaft 150 to rotate through the centrifugal impeller 140, and thus driving the other centrifugal impellers 140 to rotate.

[0029] It is understandable that the specific cooperation method between the motor 160 and the drive shaft 150 can be determined according to actual production requirements, and no specific limitation is made here.

[0030] Therefore, by having multiple centrifugal impellers 140 all located on the same drive shaft 150, so that multiple centrifugal impellers 140 can be driven to rotate synchronously by a single motor 160, the driving convenience of multiple centrifugal impellers 140 is improved, and there is no need to set up multiple motors 160, which helps to simplify the structure of the air conditioner 100 and reduce the production cost and assembly difficulty of the air conditioner 100.

[0031] In related technologies, wall-mounted air conditioners typically use cross-flow impellers and long air outlets to accommodate them. However, the cross-flow impellers have poor pressure resistance, resulting in low air velocity at the air outlet of the wall-mounted air conditioner. Furthermore, the single air outlet restricts the airflow direction of the wall-mounted air conditioner, thereby affecting the uniformity of heat exchange between the air conditioner and the external environment, and consequently impacting the user comfort of the wall-mounted air conditioner.

[0032] This application, by separately setting a lower air outlet 112 and a front air outlet 113, enables the air conditioner 100 to output air in different directions, which is beneficial to improving the heat exchange uniformity of the air conditioner 100 to the external environment. Furthermore, the lower air outlet 112 can improve the grounding of hot air, thereby reducing the temperature difference between the air conditioner 100 and the external environment when heating, thus improving the heating effect of the air conditioner 100 and enhancing the user comfort. In addition, by setting a centrifugal fan 140, it is beneficial to increase the air outlet speed of the air conditioner 100, thereby increasing the air delivery distance of the air conditioner 100 and improving the heat exchange effect. Moreover, the multiple centrifugal fans 140 are located on the same drive shaft 150, which is beneficial to improve the driving convenience of multiple centrifugal fans 140 and eliminates the need for multiple motors 160, which simplifies the structure of the air conditioner 100 and reduces the production cost and assembly difficulty of the air conditioner 100.

[0033] In some specific embodiments of this utility model, the air conditioner 100 can be a wall-mounted indoor unit.

[0034] Combination Figure 1 , Figure 5 and Figure 6 In some embodiments of this utility model, the lower air outlet 112 is located on the side of the front air outlet 113 near the middle of the housing 110.

[0035] For example, in the left-right direction, or in the axial direction parallel to the centrifugal impeller 140, or in the length direction of the housing 110, the front air outlet 113 is positioned closer to the side wall of the housing 110 than the lower air outlet 112, and the lower air outlet 112 is positioned closer to the middle of the housing 110. This is to prevent the airflow discharged from the lower air outlet 112 from being blocked by the wall located in the left-right direction of the air conditioner 100, which helps to ensure the air outlet range of the lower air outlet 112, thereby improving the heat exchange effect of the air conditioner 100.

[0036] like Figure 1 As shown, in some embodiments of this utility model, there are multiple lower air outlets 112, which are located in the middle of the housing 110.

[0037] For example, multiple lower air outlets 112 can be evenly spaced in the middle of the housing 110. By setting multiple lower air outlets 112, it is beneficial to improve the downward air supply effect of the air conditioner 100, thereby further improving the grounding of the hot air when the air conditioner 100 is heating, and thus further improving the heating effect of the air conditioner 100 on the external environment. In addition, since multiple lower air outlets 112 are all located in the middle of the housing 110, it is beneficial to prevent the airflow discharged from the lower air outlets 112 from being blocked by the wall, thereby ensuring the air outlet range of the lower air outlets 112, and thus improving the heat exchange effect of the air conditioner 100.

[0038] It is understandable that there can be two or three lower air outlets 112, and the specific number of lower air outlets 112 can be determined according to actual production requirements, without making a specific limit here.

[0039] Reference Figure 1 In some embodiments of this utility model, multiple front air outlets 113 are provided, and the multiple front air outlets 113 are distributed on both sides of multiple lower air outlets 112.

[0040] For example, multiple lower air outlets 112 are evenly spaced in the middle of the housing 110. This can also be understood as follows: in the left-right direction, multiple lower air outlets 112 are concentrated in the middle of the housing 110, and multiple front air outlets 113 are distributed on the left and right sides of the concentrated lower air outlets 112. For example, there can be two front air outlets 113 and two lower air outlets 112. In the left-right direction, the two front air outlets 113 can be located on the front side of the housing 110, and one of the two front air outlets 113 can be located near the right side wall of the housing 110, and the other of the two front air outlets 113 can be located near the left side wall of the housing 110. The two lower air outlets 112 are both located on the bottom wall of the housing 110 and between the two front air outlets 113.

[0041] In short, the multiple lower air outlets 112 are more concentrated than the multiple front air outlets 113, which helps to merge the boundary layers of the airflow discharged from the lower air outlets 112, thereby reducing the frictional resistance between the airflow discharged from the lower air outlets 112 and the air in the external environment. It also helps to optimize the flow pattern of the airflow discharged from the lower air outlets 112, reduce the kinetic energy loss of the airflow, thereby reducing the wind resistance. This is beneficial to further improve the grounding of the hot air when the air conditioner 100 is heating, and improve the heating effect of the air conditioner 100.

[0042] In addition, refer to Figure 7Multiple front air outlets 113 are distributed on both sides of multiple lower air outlets 112, so that the air conditioner 100 can deliver air to different locations in the external environment, which helps to improve the heat exchange uniformity of the air conditioner 100 to the external environment, thereby improving the user comfort of the air conditioner 100.

[0043] It is understood that the above-mentioned two lower air outlets 112 and two front air outlets 113 are merely examples for ease of understanding and should not be construed as a limitation of this application. The specific number of lower air outlets 112 and front air outlets 113 can be determined according to actual production requirements and is not specifically limited here.

[0044] In some embodiments of this utility model, the distance between the front air outlet 113 and the side wall of the adjacent air conditioner 100 in the left-right direction is greater than 30mm.

[0045] For example, considering that there may be walls in the left and right directions of the air conditioner 100 when the air conditioner 100 is installed, in order to reduce the impact of the walls on the air outlet 113, the distance between the front air outlet 113 and the side wall of the air conditioner 100 adjacent to it is made greater than 30mm, so as to increase the distance between the front air outlet 113 and the wall located in the left and right directions of the air conditioner 100. This helps to reduce the risk that the airflow discharged from the front air outlet 113 will be blocked by the wall, resulting in a reduction in the air outlet 113's air outlet range, and thus helps to increase the heat exchange effect of the air conditioner 100.

[0046] In some embodiments of this utility model, the minimum distance between the lower air outlet 112 and the adjacent front air outlet 113 in the left-right direction is the first distance. The size range of the first distance is 50mm-120mm, so as to ensure the coverage of the airflow discharged by the air conditioner 100, improve the heat exchange effect of the air conditioner 100, improve the temperature uniformity of the air conditioner 100, and reduce the risk of airflow turbulence caused by the collision of the airflow discharged by the lower air outlet 112 and the front air outlet 113 at close range, thereby reducing the noise generated by the air conditioner 100 during operation.

[0047] When the size of the first gap is less than 50mm, the airflow discharged from the front air outlet 113 and the airflow discharged from the lower air outlet 112 are prone to collide at close range, resulting in turbulence. This prevents the airflow from effectively spreading, shortens the air delivery distance of the air conditioner 100, and thus results in a small coverage area of ​​the airflow discharged by the air conditioner 100, affecting the heat exchange effect of the air conditioner 100. Furthermore, the turbulent airflow will generate noise, increasing the noise of the air conditioner 100 during operation and affecting the user comfort of the air conditioner 100.

[0048] When the size of the first gap is greater than 120mm, the gap between the front air outlet 113 and the lower air outlet 112 is too large, which makes it easy for gaps to appear between the front air outlet 113 and the lower air outlet 112 that the airflow cannot cover, thus affecting the heat exchange uniformity of the air conditioner 100.

[0049] In some embodiments of this utility model, the distance between adjacent lower air outlets 112 is a second distance, the size of which ranges from 50mm to 120mm, in order to ensure the coverage of the airflow discharged from the lower air outlets 112. This is beneficial to improving the heat exchange uniformity of the air conditioner 100, and also to preventing discomfort caused to the human body due to excessive downward airflow from the air conditioner 100. At the same time, it is beneficial to reduce the risk of airflow turbulence.

[0050] When the second spacing is less than 50mm, the airflow from the two adjacent lower air outlets 112 will directly overlap in close proximity, resulting in a strong downward airflow from the air conditioner 100. This strong wind is likely to blow directly onto the human body, affecting user comfort and easily causing airflow turbulence, which will increase the noise generated by the air conditioner 100 during operation.

[0051] When the size of the second gap is greater than 120mm, the diffusion range of the airflow discharged from the two adjacent lower air outlets 112 is difficult to connect, which will result in a gap between the two adjacent lower air outlets 112 that the airflow cannot cover, which will easily affect the heat exchange uniformity of the air conditioner 100. In some embodiments of this utility model, the total opening area A of the lower air outlet 112 and the total opening area B of the front air outlet 113 satisfy the relationship: 1≤A / B≤1.5. This is beneficial to improving the downward air supply effect of the air conditioner 100, while optimizing the overall air field of the air conditioner 100, thereby improving the heat exchange effect of the air conditioner 100 on the external environment and improving the air supply comfort of the air conditioner 100.

[0052] Specifically, when A / B < 1, the total opening area of ​​the lower air outlet 112 is less than the total opening area of ​​the front air outlet 113, and the airflow velocity from the lower air outlet 112 is greater than the airflow velocity from the front air outlet 113. In other words, the airflow from the lower air outlet 112 is stronger, while the airflow from the front air outlet 113 is gentler. Since the lower air outlet 112 is used to deliver air towards the human activity area, it is easy to cause strong winds to blow directly onto the human body, affecting the comfort of using the air conditioner 100.

[0053] When A / B > 1.5, the total opening area of ​​the lower air outlet 112 is too large compared to the total opening area of ​​the front air outlet 113. This can easily lead to the airflow velocity from the lower air outlet 112 being too low compared to the airflow velocity from the front air outlet 113. Consequently, the hot air from the air conditioner 100 will not reach the ground properly during heating, thus affecting the heating effect of the air conditioner 100 on the external environment.

[0054] Therefore, by ensuring that 1≤A / B≤1.5, it is beneficial to prevent strong winds from blowing directly on the human body, thereby improving the user comfort of the air conditioner 100. At the same time, it can ensure that the hot air from the air conditioner 100 falls to the ground when heating, thus improving the heating effect of the air conditioner 100 on the external environment.

[0055] Combination Figure 3 and Figure 4 In some embodiments of the present invention, the duct component 130 has a first air guide section 131 extending toward the lower air outlet 112, the first air guide section 131 extending obliquely in a forward and downward direction, and the duct component 130 has a second air guide section 132 extending toward the front air outlet 113, the second air guide section 132 extending obliquely in a forward and upward direction.

[0056] For example, by having the air duct 130 have a first air guide section 131 extending toward the lower air outlet 112, the airflow flowing into the air duct 130 can flow toward the lower air outlet 112 through the first air guide section 131, thereby improving the orderliness of the airflow and thus improving the efficiency of the airflow flowing toward the lower air outlet 112, which in turn improves the efficiency of the air conditioner 100 in blowing air downwards. In addition, by having the first air guide section 131 extend at an angle in a forward and downward direction, the airflow discharged from the lower air outlet 112 through the first air guide section 131 can have a forward and downward component, which helps to improve the diffusion effect of the airflow discharged from the lower air outlet 112.

[0057] By having the air duct 130 have a second air guide section 132 extending toward the front air outlet 113, the airflow entering the air duct 130 can flow toward the front air outlet 113 through the second air guide section 132, thereby improving the orderliness of the airflow and thus improving the efficiency of the airflow flowing toward the front air outlet 113, which in turn improves the efficiency of the air conditioner 100 in sending air forward. In particular, by having the second air guide section 132 extend at an angle in the forward and upward direction, the airflow discharged from the front air outlet 113 through the second air guide section 132 can have a forward and upward component, which helps to improve the diffusion effect of the airflow discharged from the front air outlet 113.

[0058] In some embodiments of this utility model, the angle between the central axis of the first air guide section 131 and the horizontal plane is 45°-70°, so as to ensure the grounding of the airflow discharged from the lower air outlet 112, reduce the risk of the airflow blowing directly on the human body, and at the same time improve the effect of airflow diffusion in the horizontal direction, thereby improving the uniformity of heat exchange between the airflow discharged from the lower air outlet 112 and the external environment.

[0059] When the angle between the central axis of the first air guide section 131 and the horizontal plane is less than 45°, the downward flow of the airflow discharged from the lower air outlet 112 is limited, resulting in poor airflow landing. This is especially true for the landing of hot air from the air conditioner 100 in heating mode, which leads to a large temperature difference between the upper and lower spaces of the external environment when the air conditioner 100 is in heating mode. Consequently, the temperature difference between the user's head and feet is large, and the airflow discharged from the lower air outlet 112 is more likely to blow directly onto the human body, further affecting the comfort of using the air conditioner 100.

[0060] When the angle between the central axis of the first air guide section 131 and the horizontal plane is greater than 70°, it will restrict the ability of the airflow discharged from the lower air outlet 112 to diffuse in the horizontal direction, resulting in poor diffusion effect of the airflow discharged from the lower air outlet 112 in the horizontal direction, affecting the uniformity of heat exchange between the airflow discharged from the lower air outlet 112 and the external environment, thereby affecting the overall heat exchange uniformity between the air conditioner 100 and the external environment.

[0061] Therefore, by making the angle between the central axis of the first air guide section 131 and the horizontal plane 45°-70°, it is beneficial to ensure the grounding of the airflow discharged from the lower air outlet 112 and to reduce the risk of the airflow blowing directly on the human body. At the same time, it can improve the horizontal diffusion effect of the airflow and improve the uniformity of heat exchange between the airflow discharged from the lower air outlet 112 of the air conditioner 100 and the external environment, thereby improving the comfort of using the air conditioner 100 and thus improving the user experience.

[0062] In some embodiments of this utility model, the angle between the central axis of the second air guide section 132 and the horizontal plane is 0°-30°, so as to reduce the risk of the airflow discharged from the front air outlet 113 blowing directly on the human body. At the same time, it can help ensure the diffusion effect of the airflow discharged from the front air outlet 113 and improve the uniformity of heat exchange between the airflow discharged from the front air outlet 113 and the external environment.

[0063] When the angle between the central axis of the second air guide section 132 and the horizontal plane is less than 0°, the airflow discharged from the front air outlet 113 is likely to blow directly onto the human body. At the same time, the airflow discharged from the front air outlet 113 is likely to have poor diffusion effect in the vertical direction, affecting the heat exchange effect between the air conditioner 100 and the external environment, thereby affecting the comfort of using the air conditioner 100.

[0064] When the angle between the central axis of the second air guide section 132 and the horizontal plane is greater than 30°, if there are obstacles such as lights near the front air outlet 113, the airflow discharged from the front air outlet 113 may be bounced and form turbulence, affecting the stability of the air field of the air conditioner 100, thereby affecting the comfort of using the air conditioner 100.

[0065] Therefore, by making the angle between the central axis of the second air guide section 132 and the horizontal plane 0°-30°, the airflow discharged from the front air outlet 113 is prevented from blowing directly on the human body, and it is also conducive to ensuring the diffusion effect of the airflow discharged from the front air outlet 113 in the vertical direction. This helps to improve the heat exchange uniformity of the air conditioner 100 to the external environment, and at the same time, it can reduce the risk of the airflow discharged from the air conditioner 100 being rebounded, improve the stability of the air field of the air conditioner 100, and improve the comfort of using the air conditioner 100, thereby improving the user experience.

[0066] Combination Figure 5 and Figure 6 In some embodiments of this utility model, the air duct component 130 includes a plurality of spaced volutes 133, each of which corresponds to a plurality of centrifugal impellers 140. Each volute 133 is used to guide air to the corresponding lower air outlet 112 or front air outlet 113.

[0067] For example, multiple volutes 133 are arranged at intervals along an axial direction parallel to the drive shaft 150. Each volute 133 is provided with a centrifugal impeller 140, and each volute 133 is open on both sides in the axial direction parallel to the drive shaft 150. Airflow can enter the volute 133 through the open ends on both sides of the volute 133 under the drive of the centrifugal impeller 140. The volute 133 can guide the airflow to flow towards the corresponding lower air outlet 112 or front air outlet 113, so as to improve the orderliness of airflow and reduce the energy loss of airflow.

[0068] In some specific embodiments of this utility model, each centrifugal impeller 140 can be configured to correspond to a lower air outlet 112 or a front air outlet 113. Then, the volute 133 configured to correspond to the centrifugal impeller 140 can form a first air guide section 131 or a second air guide section 132. For example, if one of the centrifugal impellers 140 is configured to correspond to a lower air outlet 112, then the volute 133 configured to correspond to the centrifugal impeller 140 forms a first air guide section 131 extending toward the lower air outlet 112. If another of the centrifugal impellers 140 is configured to correspond to a front air outlet 113, then the volute 133 configured to correspond to the centrifugal impeller 140 forms a second air guide section 132 extending toward the front air outlet 113.

[0069] Combination Figure 5and Figure 6 In some embodiments of this utility model, the air conditioner 100 further includes: a bearing housing 170, the bearing housing 170 and the motor 160 are distributed on both sides of a plurality of centrifugal impellers 140, one end of the drive shaft 150 is connected to the motor 160 and the other end is supported on the bearing housing 170.

[0070] For example, in the axial direction parallel to the drive shaft 150, the motor 160 is disposed on one side of the plurality of centrifugal impellers 140, and the bearing housing 170 is disposed on the other side of the plurality of centrifugal impellers 140. The motor 160 can drive the drive shaft 150 to rotate, so that the drive shaft 150 can drive the plurality of centrifugal impellers 140 to rotate synchronously. The end of the drive shaft 150 away from the motor 160 can be rotatably mounted on the bearing housing 170 through a bearing, so as to facilitate the rotation of the drive shaft 150 and the centrifugal impellers 140, which helps to reduce the wear of the drive shaft 150.

[0071] By distributing the bearing housing 170 and the motor 160 on both sides of the multiple centrifugal impellers 140, it is beneficial to reduce the impact of the bearing housing 170 and the motor 160 on the air intake and exhaust effect, and to improve the rotational reliability of the multiple centrifugal impellers 140. Specifically, if the motor 160 is placed between two adjacent centrifugal impellers 140, the motor 160 will block the air intake side of the two adjacent centrifugal impellers 140, thereby affecting the air intake and exhaust efficiency of the air conditioner 100. In addition, it is necessary to split the drive shaft 150 into multiple shaft segments, which affects the integrity of the drive shaft 150 and thus easily affects the reliability of the drive shaft 150 driving the multiple centrifugal impellers 140 to rotate synchronously.

[0072] like Figure 5 As shown, in some embodiments of this utility model, the air conditioner 100 also includes a motor cover 180. The motor cover 180 is disposed on the housing 110 and located on one side of the plurality of centrifugal impellers 140. The motor cover 180 can be used for positioning and installing the motor 160, which is beneficial to improving the assembly convenience of the motor 160. In addition, the motor cover 180 can protect the motor 160, preventing the motor 160 from being damaged by external impact, and at the same time preventing dust and other debris from affecting the operation of the motor 160.

[0073] In some embodiments of this utility model, multiple centrifugal impellers 140 and drive shaft 150 can be integrally formed to facilitate coaxial rotation of multiple centrifugal impellers 140 and simplify the assembly steps of air conditioner 100. In other embodiments, multiple centrifugal impellers 140 can be respectively fixed to drive shaft 150 so that multiple centrifugal impellers 140 and drive shaft 150 can be formed as an integral part, which helps to reduce the manufacturing difficulty of centrifugal impellers 140 and drive shaft 150 and improve the manufacturing efficiency of air conditioner 100.

[0074] Combination Figures 2 to 4 In some embodiments of this utility model, the housing 110 includes: a chassis, a front frame 114 and a panel 115. The front frame 114 is located on the front side of the chassis, and an air inlet area 111 and a lower air outlet 112 are formed on the front frame 114. The panel 115 is located on the front side of the front frame 114, and a front air outlet 113 is formed on the panel 115.

[0075] For example, when the air conditioner 100 needs to be installed on a wall in the external environment, the chassis can be hung on the wall to facilitate the installation of the air conditioner 100 on the wall. The chassis can also serve as a mounting carrier for components such as the front frame 114, panel 115, heat exchanger 120, and air duct component 130 to support the aforementioned components, thereby improving the assembly stability of the aforementioned components.

[0076] The front frame 114 is installed on the front side of the chassis. The upper part of the front frame 114 can form an air inlet area 111. The part of the front frame 114 opposite to the air inlet area 111 can form a lower air outlet 112. Part of the airflow entering the housing 110 can be discharged through the lower air outlet 112 under the drive of the centrifugal impeller 140, so as to realize the downward air supply of the air conditioner 100.

[0077] The panel 115 can be located on the front side of the frame 114. The panel 115 can cover the components inside the housing 110 (such as the heat exchanger 120, centrifugal fan 140 and air duct 130, etc.), which helps to improve the appearance consistency of the air conditioner 100 and further reduces the risk of dust and other debris entering the housing 110. At the same time, a front air outlet 113 can be formed on the panel 115. Another part of the airflow entering the housing 110 can be discharged through the front air outlet 113 under the drive of the centrifugal fan 140, so as to realize the forward air delivery of the air conditioner 100.

[0078] In some embodiments of this utility model, the chassis and the front frame 114 are formed as one piece, which helps to simplify the assembly steps of the housing 110, improve the assembly efficiency of the air conditioner 100, and facilitate the maintenance of the air conditioner 100. Specifically, when it is necessary to maintain the internal components of the air conditioner 100, only the panel 115 needs to be removed, thereby reducing the number of parts that need to be disassembled during maintenance of the air conditioner 100 and improving the convenience of maintenance of the air conditioner 100.

[0079] Combination Figures 2 to 4 In some embodiments of this utility model, the housing 110 also includes an air inlet grille 116, which can be set at the air inlet area 111. The air inlet grille 116 helps to reduce the risk of dust and other debris entering the housing 110 through the air inlet area 111, thereby helping to reduce the maintenance frequency of the air conditioner 100 and improving the service life of the air conditioner 100.

[0080] In some embodiments of this utility model, the air conditioner 100 further includes an air guide plate, which is respectively disposed at the front air outlet 113 and the lower air outlet 112, and the air guide plate can rotate relative to the housing 110 to adjust the air outlet angle of the front air outlet 113 and the lower air outlet 112 respectively, thereby improving the air outlet effect of the air conditioner 100.

[0081] In addition, the air deflector can selectively close the front air outlet 113 and the lower air outlet 112. For example, when the air conditioner 100 is in low-level heating mode, the air deflector can close the front air outlet 113 so that the airflow heated by the heat exchanger 120 can be discharged through the lower air outlet 112, ensuring the heat exchange effect of the air conditioner 100 in low-level heating mode. When the air conditioner 100 is in low-level cooling mode, the air deflector can close the lower air outlet 112 so that the low-temperature airflow after heat exchange with the heat exchanger 120 can be discharged through the front air outlet 113, avoiding the low-temperature airflow blowing directly on the human body. At the same time, because the low-temperature airflow has a high density, it can sink after being discharged from the front air outlet 113, thus ensuring the heat exchange effect of the air conditioner 100 in low-level cooling mode.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, include: The housing has an air inlet area, a bottom air outlet on the bottom wall, and a front air outlet on the front side. A heat exchanger and a ductwork component are respectively disposed within the housing. The ductwork component is located on the side of the heat exchanger facing the front air outlet to guide airflow toward the front air outlet and the lower air outlet. Multiple centrifugal impellers are disposed within the air duct component. The lower air outlet corresponds to at least one centrifugal impeller, and the front air outlet corresponds to at least one centrifugal impeller. All the centrifugal impellers are disposed on the same drive shaft so that they are driven to rotate synchronously by the drive shaft. An electric motor, which cooperates with the drive shaft to drive the drive shaft to rotate.

2. The air conditioner according to claim 1, characterized in that, The lower air outlet is located on the side of the front air outlet near the middle of the housing.

3. The air conditioner according to claim 2, characterized in that, The lower air outlet is multiple and located in the middle of the housing.

4. The air conditioner according to claim 2, characterized in that, The front air outlet is provided in multiple locations, and the multiple front air outlets are distributed on both sides of the multiple lower air outlets.

5. The air conditioner according to claim 1, characterized in that, The total opening area A of the lower air outlet and the total opening area B of the front air outlet satisfy the following relationship: 1≤A / B≤1.

5.

6. The air conditioner according to claim 1, characterized in that, The air duct component has a first air guide section extending toward the lower air outlet, the first air guide section extending obliquely in a forward and downward direction, and the air duct component has a second air guide section extending toward the front air outlet, the second air guide section extending obliquely in a forward and upward direction.

7. The air conditioner according to claim 6, characterized in that, The angle between the central axis of the first air guide section and the horizontal plane is 45°-70°.

8. The air conditioner according to claim 6, characterized in that, The angle between the central axis of the second air guide section and the horizontal plane is 0°-30°.

9. The air conditioner according to claim 1, characterized in that, The air duct component includes multiple spaced-apart volutes, each of which corresponds to one of the centrifugal impellers. Each volute is used to guide air to the corresponding lower air outlet or the front air outlet.

10. The air conditioner according to claim 1, characterized in that, Also includes: The bearing housing and the motor are distributed on both sides of the plurality of centrifugal impellers. One end of the drive shaft is connected to the motor and the other end is supported by the bearing housing.

11. The air conditioner according to claim 1, characterized in that, The housing includes: Chassis; A front frame is provided on the front side of the chassis, and the air inlet area and the lower air outlet are respectively formed on the front frame; A panel is located on the front side of the face frame, and the front air outlet is formed on the panel.

12. The air conditioner according to claim 11, characterized in that, The chassis and the face frame are formed as a single unit.

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