Air conditioner

Abstract

The air conditioner comprises a shell assembly, a centrifugal fan, a first heat exchanger and a shielding component, an air outlet channel is formed in the shell assembly, the centrifugal fan is arranged in the shell assembly, the centrifugal fan is provided with an air inlet part and an air outlet part, the air outlet part forms an air outlet, and at least part of the air outlet part extends into the air outlet channel; at least part of the first heat exchanger is spaced from and opposite to the air inlet part and the air outlet part in the axial direction of the centrifugal fan, and the shielding component is arranged on the circumferential outer side of the air outlet duct, located between the first heat exchanger and the air outlet part and used for shielding airflow blown to the air outlet part through the first heat exchanger. By arranging the shielding component, the effect of preventing heat of the first heat exchanger from radiating towards one side of the air outlet part can be achieved, and meanwhile the shielding component can shield airflow blown to the air outlet part through the first heat exchanger so as to prevent heat exchange between the side, opposite to the first heat exchanger, of the air outlet part and the side, away from the first heat exchanger, of the air outlet part; consequently, condensate water is prevented from being generated.

Description

Technical Field

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

[0002] In related technologies, a temperature difference and heat exchange occur between the side of the air outlet of an air conditioner that is closer to the evaporator and the side that is farther away from the evaporator. This causes condensation to form inside the air conditioner, resulting in dripping water and affecting the user experience. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an air conditioner that has a low risk of condensation and is conducive to improving the heat exchange effect between the airflow and the first heat exchanger.

[0004] An air conditioner includes: a shell assembly having an air outlet duct; a centrifugal fan disposed within the shell assembly, the centrifugal fan having an air inlet and an air outlet, the air outlet forming an air outlet, at least a portion of the air outlet extending into the air outlet duct, and the air outlet communicating with the air outlet duct; a first heat exchanger disposed within the shell assembly, and at least a portion of the first heat exchanger being spaced apart from and opposite to the air inlet and the air outlet in the axial direction of the centrifugal fan; and a shielding member disposed circumferentially outside the air outlet duct, located between the first heat exchanger and the air outlet, and used to shield the airflow blowing from the first heat exchanger toward the air outlet.

[0005] According to the embodiment of the present invention, the air conditioner is equipped with a shielding component located on the outer periphery of the air outlet duct. This component can prevent the heat from the first heat exchanger from radiating towards the air outlet side. At the same time, the shielding component can also block the airflow blowing from the first heat exchanger towards the air outlet, thereby preventing heat exchange between the side of the air outlet opposite to the first heat exchanger and the side of the air outlet away from the first heat exchanger. This helps to prevent the formation of condensate, thereby reducing the risk of water dripping from the air conditioner and improving the user experience.

[0006] According to some embodiments of the present invention, the shell assembly includes a chassis, the chassis is provided with an air duct wall, the air duct wall defines an air outlet duct that is arranged through the radial direction of the centrifugal fan, and at least a portion of the air duct wall extends upward from the inner wall of the chassis, and the shielding member is provided on the inner wall of the chassis and spaced apart from the air duct wall.

[0007] According to some embodiments of the present invention, the inner wall surface of the duct wall is opposite to the outer wall surface of the air outlet, and the vertical distance between the inner wall surface of the duct wall and the outer wall surface of the air outlet is L1, which satisfies the relationship: 0.05mm≤L1≤3mm.

[0008] According to some embodiments of the present invention, the shielding member is constructed as a baffle, which extends upward from the inner wall of the chassis and defines an upwardly open groove with the air duct wall.

[0009] According to some embodiments of the present invention, the baffle extends in an annular shape, and the baffle is arranged around the air duct wall in the circumferential direction.

[0010] According to some embodiments of the present invention, the outer wall of the air outlet is provided with a shielding part, the shielding part extends from the outer wall of the air outlet into the groove, and the shielding part is used to shield the gap between the air duct wall and the air outlet.

[0011] According to some embodiments of the present invention, the shielding part includes: a first rib extending from the outer wall of the air outlet to the side of the baffle; a second rib connected to the surface of the first rib opposite to the groove and extending into the groove; wherein the connection between the first rib and the air outlet is located above the upper edge of the air duct wall.

[0012] According to some embodiments of the present invention, the air conditioner further includes a sealing element disposed in the groove, and the shielding portion abutting against the sealing element to form a seal between the air outlet and the chassis.

[0013] According to some embodiments of the present invention, in the extending direction of the air duct wall, the distance between the first rib and the upper edge of the air duct wall is L2, and satisfies the relationship: 0.5mm≤L2≤3mm.

[0014] According to some embodiments of the present invention, the lower edge of the air outlet defines the air outlet, and the distance between the lower edge of the air outlet and the upper edge of the air duct wall in the direction in which the air outlet extends into the air duct is L3, and satisfies the relationship: 1mm≤L3≤15mm.

[0015] According to some embodiments of the present invention, the air conditioner includes: two centrifugal fans, which are arranged at intervals along the axial direction of the centrifugal fans, and each centrifugal fan has an air inlet on both sides in the axial direction; and a driving device, which is disposed between the two centrifugal impellers and is used to drive the two centrifugal fans.

[0016] According to some embodiments of the present invention, the first heat exchanger is U-shaped, and the air inlet portions of the two centrifugal fans arranged opposite to each other are respectively arranged opposite to the two side walls of the U-shaped first heat exchanger.

[0017] According to some embodiments of the present invention, the shielding member is integrally formed with the chassis; and / or, the shielding part is integrally formed with the centrifugal fan.

[0018] According to some embodiments of the present utility model, the air conditioner further includes: a first housing, which is disposed above the chassis and together with the chassis defines a first mounting cavity, wherein the first mounting cavity is provided with the first heat exchanger and the centrifugal fan; and a second housing, which is disposed above the chassis and together with the chassis defines a second mounting cavity, wherein the second mounting cavity is provided with a second heat exchanger, and the second housing and the first housing are spaced apart in a first direction of the chassis to form a clearance area between the first housing and the second housing.

[0019] 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

[0020] 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:

[0021] Figure 1 This is a partial cross-sectional view of the air conditioner according to an embodiment of the present utility model. Figure 1 ;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a partial cross-sectional view of the air conditioner according to an embodiment of the present utility model. Figure 2 ;

[0024] Figure 4 This is a partial structural diagram of the chassis according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present utility model.

[0026] Figure label:

[0027] Air conditioner 100

[0028] Housing assembly 110, air outlet duct 111,

[0029] Chassis 112, Air duct wall 1121, First shell 113, Second shell 114, Clearance area 115

[0030] Centrifugal fan 120, air inlet 121, air outlet 122, air outlet 123.

[0031] Shielding part 124, first rib 1241, second rib 1242, volute 125, centrifugal impeller 126.

[0032] First heat exchanger 130

[0033] Shielding component 140

[0034] Groove 150

[0035] Seal 160

[0036] Drive unit 170. Detailed Implementation

[0037] 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.

[0038] In the description of this utility model, it should be understood that the terms "upper," "lower," "vertical," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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 as "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.

[0039] 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.

[0040] The following is for reference. Figures 1-5This invention describes an air conditioner 100 according to an embodiment of the present invention.

[0041] Reference Figure 1 An air conditioner 100 according to an embodiment of the present invention includes: a housing assembly 110 and a centrifugal fan 120. The housing assembly 110 forms an air outlet duct 111. The centrifugal fan 120 is disposed inside the housing assembly 110 and has an air inlet 121 and an air outlet 122. The air outlet 122 forms an air outlet 123. At least a portion of the air outlet 122 extends into the air outlet duct 111, and the air outlet 123 communicates with the air outlet duct 111.

[0042] For example, the centrifugal fan 120 has an air inlet 121 and an air outlet 122. The air inlet 121 forms an air inlet, and the air outlet 122 forms an air outlet 123. At least a portion of the air outlet 122 extends into the air outlet duct 111. For example, the air outlet 122 can extend entirely into the air outlet duct 111, or the end of the air outlet 122 extends into the air outlet duct 111 towards the end of the air outlet duct 111, so that the air outlet 123 and the air outlet duct 111 are connected. This helps to prevent air leakage between the air outlet 123 and the air outlet duct 111, thereby improving the efficiency of the airflow output of the air conditioner 100. When the centrifugal fan 120 is working, the centrifugal fan 120 can draw in air through the air inlet, and then the airflow can be discharged into the air outlet duct 111 through the air outlet 123 to be discharged from the housing assembly 110.

[0043] Reference Figure 1 The air conditioner 100 also includes a first heat exchanger 130, which is disposed within the housing assembly 110, and at least a portion of the first heat exchanger 130 is spaced apart from and opposite to the air inlet 121 and the air outlet 122 in the axial direction of the centrifugal fan 120.

[0044] For example, when the centrifugal impeller 126 is working, the centrifugal impeller 126 can draw air into the centrifugal impeller 126 through the air inlet. During this process, the airflow flows through the first heat exchanger 130, which can exchange heat with the airflow to meet the temperature requirements of the airflow. The airflow after heat exchange is discharged into the air outlet duct 111 through the air outlet 123, and further discharged into the external environment through the air outlet duct 111 to regulate the temperature of the external environment and meet the user's usage needs.

[0045] It should be noted that "external environment" refers to the environment outside the air conditioner 100, which can be specifically understood as the indoor environment.

[0046] At least a portion of the first heat exchanger 130 is opposite to the air inlet 121 and the air outlet 122, which is beneficial to increasing the heat exchange area of ​​the first heat exchanger 130, thereby increasing the contact area between the first heat exchanger 130 and the airflow, and further improving the heat exchange efficiency of the first heat exchanger 130.

[0047] Furthermore, combined Figure 1 and Figure 2 The air conditioner 100 also includes a shielding member 140, which is disposed on the circumferential outer side of the air outlet duct 111 and located between the first heat exchanger 130 and the air outlet 122, and is used to shield the airflow blown from the first heat exchanger 130 to the air outlet 122.

[0048] Considering that the airflow velocity at the outlet 122 near the centrifugal fan 120 is lower than the airflow velocity at the inlet 121 near the centrifugal fan 120, this will result in low heat exchange efficiency at the position of the first heat exchanger 130 opposite to the outlet 122. Since the outlet duct 111 is connected to the external environment, unheated air from the external environment will enter the outlet duct 111, causing a temperature difference between the position of the first heat exchanger 130 opposite to the outlet 122 and the air within the outlet duct 111. If the heat from the first heat exchanger 130 radiates to the outlet 122, or if the airflow passing through the portion of the first heat exchanger 130 opposite to the outlet 122 flows towards the outlet 122, the higher-temperature air will carry... Water vapor condenses to form condensate, causing the air conditioner 100 to drip. By providing a shielding member 140 on the outer circumferential side of the air outlet duct 111, the shielding member 140 can separate the portion of the first heat exchanger 130 opposite to the air outlet 122 from the air outlet 122, thereby blocking the heat from the portion of the first heat exchanger 130 opposite to the air outlet 122 from radiating toward the air outlet 122. At the same time, it can block the airflow blowing toward the air outlet 122 through the first heat exchanger 130, preventing heat exchange between the side of the air outlet 122 opposite to the first heat exchanger 130 and the side of the air outlet 122 away from the first heat exchanger 130, thus helping to prevent the formation of condensate and reducing the risk of the air conditioner 100 dripping.

[0049] In related technologies, a temperature difference and heat exchange occur between the side of the air outlet of an air conditioner that is closer to the evaporator and the side that is farther away from the evaporator. This causes condensation to form inside the air conditioner, resulting in dripping water and affecting the user experience.

[0050] This application provides a shielding member 140, which is located on the outer circumferential side of the air outlet duct 111. The shielding member 140 can prevent the heat from the first heat exchanger 130 from radiating toward the air outlet 122. At the same time, the shielding member 140 can also block the airflow blowing from the first heat exchanger 130 toward the air outlet 122, so as to prevent heat exchange between the side of the air outlet 122 opposite to the first heat exchanger 130 and the side of the air outlet 122 away from the first heat exchanger 130. This helps to prevent the formation of condensate, thereby reducing the risk of water dripping from the air conditioner 100 and improving the user experience.

[0051] Combination Figure 1 , Figure 2 and Figure 4 In some embodiments of the present invention, the shell assembly 110 includes a chassis 112, the chassis 112 is provided with an air duct wall 1121, the air duct wall 1121 defines an air outlet duct 111 that is provided through the radial direction of the centrifugal fan 120, and at least a portion of the air duct wall 1121 extends upward from the inner wall of the chassis 112, and a shielding member 140 is provided on the inner wall of the chassis 112 and spaced apart from the air duct wall 1121.

[0052] It should be noted that "the inner wall of chassis 112" refers to the side wall of chassis 112 opposite to centrifugal fan 120.

[0053] For example, at least a portion of the duct wall 1121 extends upward from the inner wall of the chassis 112. The duct wall 1121 can define an air outlet duct 111 that extends vertically. At least a portion of the air outlet portion 122 can extend vertically to reach into the air outlet duct 111.

[0054] The shielding member 140 is disposed on the inner wall of the chassis 112 and located on the outer circumferential side of the air outlet duct 111. The shielding member 140 is spaced apart from the air outlet duct 111 in the circumferential direction, so that the shielding member 140 can shield the heat radiated by the first heat exchanger 130 to the air outlet 122 and the airflow blown to the air outlet 122 through the first heat exchanger 130. It also helps to prevent the shielding member 140 from further transferring heat to the duct wall 1121 after heat exchange, which would cause a large temperature difference on both sides of the duct wall 1121, and further helps to prevent the generation of condensate.

[0055] In some examples, the duct wall 1121 may be constructed such that it extends upward from the inner wall of the chassis 112 as a whole; in other examples, the duct wall 1121 may be constructed such that a part extends upward from the inner wall of the chassis 112 and another part extends downward from the chassis 112. It is understood that the specific arrangement of the duct wall 1121 can be determined according to actual production requirements and is not specifically limited here.

[0056] like Figure 2 As shown, in some embodiments of this utility model, the inner wall surface of the duct wall 1121 is opposite to the outer wall surface of the air outlet 122, and the vertical distance between the inner wall surface of the duct wall 1121 and the outer wall surface of the air outlet 122 is L1, which satisfies the relationship: 0.05mm≤L1≤3mm.

[0057] It should be noted that "the inner wall surface of the air duct wall 1121" can be understood as the side wall surface of the air duct wall 1121 that participates in defining the air outlet duct 111, and "the outer wall surface of the air outlet 122" can be understood as the side wall surface of the air outlet 122 that is away from the air outlet 123.

[0058] For example, at least a portion of the air outlet 122 extends into the air outlet duct 111, such that the outer wall surface of the air outlet 122 is positioned opposite to the inner wall surface of the duct wall 1121, while the inner wall surface of the duct wall 1121 and the outer wall surface of the air outlet 122 are spaced apart. By ensuring that the vertical distance L1 between the inner wall surface of the duct wall 1121 and the outer wall surface of the air outlet 122 satisfies the relationship: 0.05mm≤L1≤3mm, it facilitates the assembly of the centrifugal fan 120 with the housing. Specifically, it facilitates the extension of the air outlet 122 into the air outlet duct 111, and at the same time helps to reduce the risk of air leakage between the air outlet 123 and the air outlet duct 111.

[0059] When L1 < 0.05 mm, the distance between the outer wall of the air outlet 122 and the inner wall of the duct wall 1121 is too small, making it difficult to insert the air outlet 122 into the air outlet duct 111 during the assembly of the air conditioner 100, which can easily lead to a decrease in the production and assembly efficiency of the air conditioner 100. When L1 > 3 mm, the distance between the outer wall of the air outlet 122 and the inner wall of the duct wall 1121 is too large, and some airflow will leak through the gap between the air outlet 122 and the duct wall 1121, thereby affecting the air outlet efficiency of the air conditioner 100, and consequently affecting the heat exchange efficiency of the air conditioner 100 to the external environment.

[0060] Combination Figures 1 to 2 In some embodiments of this utility model, the shielding member 140 is constructed as a baffle, which extends upward from the inner wall of the chassis 112 and defines an upwardly open groove 150 with the air duct wall 1121.

[0061] For example, the baffle extends upward from the inner wall of the chassis 112 and is spaced apart from the duct wall 1121 in the circumferential direction, so that the baffle and the duct wall 1121 together define an upwardly open groove 150. The groove 150 helps to further reduce the heat exchange between the first heat exchanger 130 and the airflow flowing through the first heat exchanger 130 and the side of the duct wall 1121 away from the first heat exchanger 130, thereby helping to further prevent the generation of condensate.

[0062] like Figure 4 As shown, in some embodiments of this utility model, the baffle extends in a ring shape and is arranged around the duct wall 1121 in the circumferential direction.

[0063] Specifically, the baffle is arranged around the duct wall 1121 on the outer periphery of the duct wall 1121, which helps to further improve the baffle's heat transfer to the first heat exchanger 130 and the shielding effect on the airflow flowing through the first heat exchanger 130, thereby helping to further prevent the generation of condensate. At the same time, the baffle can prevent the airflow from flowing directly to the gap between the air outlet 122 and the duct wall 1121, thus reducing the risk of airflow leakage and ensuring that the airflow can fully exchange heat with the first heat exchanger 130, thereby improving the heat exchange effect of the air conditioner 100 on the external environment.

[0064] Combination Figure 1 and Figure 2 In some embodiments of this utility model, the outer wall of the air outlet 122 is provided with a shielding part 124. The shielding part 124 extends from the outer wall of the air outlet 122 into the groove 150, and the shielding part 124 is used to shield the gap between the air duct wall 1121 and the air outlet 122.

[0065] For example, the shielding part 124 can extend from the outer wall of the air outlet 122 into the groove 150, and the shielding part 124 can extend into the groove 150. In the circumferential direction of the air duct wall 1121, the shielding part 124 can shield the upper edge of the air duct wall 1121, so that the shielding part 124 can shield the gap between the air duct wall 1121 and the air outlet 122, preventing the airflow from flowing out from the gap between the air duct wall 1121 and the air outlet 122. This helps to ensure that the airflow can fully exchange heat with the first heat exchanger 130, thereby improving the heat exchange effect of the air conditioner 100 on the external environment.

[0066] In addition, the shielding part 124 further blocks the heat of the first heat exchanger 130 and the airflow flowing through the first heat exchanger 130, preventing heat exchange on both sides of the duct wall 1121, thereby helping to further prevent the formation of condensate.

[0067] Reference Figure 2In some embodiments of this utility model, the shielding part 124 includes: a first rib 1241 and a second rib 1242. The first rib 1241 extends from the outer wall of the air outlet part 122 toward the baffle side. The second rib 1242 is connected to the side surface of the first rib 1241 opposite to the groove 150 and extends into the groove 150. The connection between the first rib 1241 and the air outlet part 122 is located above the upper edge of the air duct wall 1121.

[0068] For example, one end of the first rib 1241 is connected to the outer wall of the air outlet 122, and in the vertical direction, the connection between the first rib 1241 and the air outlet 122 is located above the upper edge of the air duct wall 1121. The first rib 1241 extends from the air outlet 122 toward the baffle. The second rib 1242 is connected to the end of the first rib 1241 away from the air outlet 122, and the second rib 1242 extends from the first rib 1241 toward the groove 150. The air outlet 122 can be formed into a ring structure. The first rib 1241 can extend in the radial direction of the air outlet 122 toward the side away from the air outlet 123, and the second rib 1242 can extend in the axial direction of the air outlet 122 toward the groove 1120. Extending inwards, the second rib 1242 is located on the side of the air duct wall 1121 near the baffle. The second rib 1242 can block the upper edge of the air duct wall 1121 in the radial direction of the air outlet 122 to prevent the airflow inside the shell assembly 110 from flowing out directly through the gap between the air duct wall 1121 and the air outlet 122. This facilitates the airflow to fully exchange heat with the first heat exchanger 130 inside the shell assembly 110, thereby improving the heat exchange effect of the air conditioner 100 on the external environment. Furthermore, the second rib 1242 can further block the heat of the first heat exchanger 130 and the airflow flowing through the first heat exchanger 130, preventing heat exchange on both sides of the air duct wall 1121, thereby further preventing the formation of condensate.

[0069] Furthermore, since the first rib 1241 is located above the upper edge of the air duct wall 1121, and the first rib 1241 extends away from the air outlet 122 in the radial direction of the air outlet 122, the first rib 1241 can further block the gap between the air duct wall 1121 and the air outlet 122 above the air duct wall 1121, preventing airflow from flowing into the gap between the air duct wall 1121 and the air outlet 122 from above the second rib 1242, which helps to further reduce the risk of airflow leakage.

[0070] Combination Figure 1 , Figure 2 and Figure 4In some embodiments of this utility model, the air conditioner 100 further includes a sealing member 160, which is disposed in the groove 150, and the shielding part 124 abuts against the sealing member 160 to form a seal between the air outlet part 122 and the chassis 112.

[0071] For example, the seal 160 can be embedded in the groove 150, or it can be understood that the duct wall 1121 and the shielding member 140 clamp and fix the seal 160 on the circumferential outer side of the air outlet duct 111 to improve the assembly stability of the seal 160. The seal 160 can be set at the bottom of the groove 150, that is, the seal 160 is located in the groove 150 away from the opening of the groove 150. The shielding part 124 can abut against the seal 160 in the vertical direction near the chassis 112, so that the shielding part 124, the groove 150 and the seal 160 can be sealed together, thereby forming a seal between the air outlet 122 and the chassis 112, which helps to further prevent the airflow from leaking through the gap between the air outlet 122 and the duct wall 1121, improve the heat exchange effect between the airflow and the first heat exchanger 130, and improve the heat exchange effect of the air conditioner 100 to the external environment.

[0072] In some examples, seal 160 can be configured as a rubber ring.

[0073] like Figure 2 As shown, in some embodiments of this utility model, in the extending direction of the air duct wall 1121, the distance between the first rib 1241 and the upper edge of the air duct wall 1121 is L2, and satisfies the relationship: 0.5mm≤L2≤3mm.

[0074] For example, in the extension direction of the duct wall 1121, which can also be understood as in the vertical direction, the first rib 1241 is spaced apart from the upper edge of the duct wall 1121, and the distance between the first rib 1241 and the upper edge of the duct wall 1121 is defined as L2. L2 satisfies the relationship: 0.5mm≤L2≤3mm. This helps to prevent the centrifugal fan 120 from being unable to be smoothly assembled with the chassis 112 when the centrifugal fan 120 is assembled with the chassis 112 due to interference between the first rib 1241 and the upper edge of the duct wall 1121. At the same time, it helps to prevent the second rib 1242 from being unable to extend into the groove 150 due to the excessive gap between the first rib 1241 and the upper edge of the duct wall 1121 in the vertical direction. This helps to prevent the second rib 1242 from failing to block the gap between the duct wall 1121 and the air outlet 122.

[0075] Reference Figure 3In some embodiments of this utility model, the lower edge of the air outlet 122 defines an air outlet 123, and the distance between the lower edge of the air outlet 122 and the upper edge of the air duct wall 1121 in the direction in which the air outlet 122 extends into the air outlet duct 111 is L3, and satisfies the relationship: 1mm≤L3≤15mm.

[0076] For example, the air outlet 122 extends into the air outlet duct 111. In the radial direction of the air outlet 122, the frontal projection plane of the air outlet 122 and the frontal projection plane of the duct wall 1121 have an overlapping area. The vertical dimension of this overlapping area is defined as L3, and L3 satisfies the relationship: 1mm≤L3≤15mm. This helps to prevent airflow leakage through the gap between the duct wall 1121 and the air outlet 122, and at the same time helps to reduce the material cost of the air conditioner 100.

[0077] When L3 < 1mm, the size of the air outlet 122 extending into the air outlet duct 111 is too small, and the gap between the duct wall 1121 and the air outlet 122 is small in the vertical direction. The airflow can easily flow out through the gap between the duct wall 1121 and the air outlet 122, which leads to air leakage and affects the heat exchange effect between the airflow and the first heat exchanger 130. When L3 > 15mm, although the effect of preventing airflow leakage through the gap between the duct wall 1121 and the air outlet 122 can be improved, the size of the air outlet 122 or the duct wall 1121 needs to be increased, which leads to high material cost of the air conditioner 100.

[0078] Reference Figure 1 In some embodiments of this utility model, the air conditioner 100 includes: a drive device 170 and two centrifugal fans 120. The two centrifugal fans 120 are arranged at intervals along the axial direction of the centrifugal fans 120, and each centrifugal fan 120 has an air inlet 121 on both sides in the axial direction. The drive device 170 is located between the two centrifugal impellers 126 and is used to drive the two centrifugal fans 120.

[0079] For example, the drive unit 170 and the two centrifugal fans 120 can both be mounted on the chassis 112, and the two centrifugal fans 120 are respectively mounted on both sides of the axial direction of the drive unit 170. The drive unit 170 is connected to the two centrifugal impellers 126 respectively. The drive unit 170 can drive the two centrifugal impellers 126 to work at the same time, so that the two centrifugal impellers 126 can drive the airflow at the same time. During the airflow, the airflow can exchange heat with the first heat exchanger 130. The airflow after heat exchange can be discharged through two air outlet ducts 111 that are spaced apart on the chassis 112 and connected to the air outlets 123 of the two centrifugal fans 120 respectively, so as to exchange heat with the external environment.

[0080] In some examples, the centrifugal fan 120 includes a volute 125 and a centrifugal impeller 126, which is rotatably disposed within the volute 125 and drivenly connected to a drive unit 170. The drive unit 170 can drive the centrifugal impeller 126 to rotate so that the centrifugal impeller 126 can drive airflow. An air outlet 122 is formed on the side of the volute 125 near the chassis 112, and the air outlet 122 defines an air outlet 123.

[0081] In some examples, the drive unit 170 can be configured as a motor.

[0082] Combination Figure 1 and Figure 3 In some embodiments of this utility model, the first heat exchanger 130 is arranged in a U-shape, and the air inlets 121 of the two centrifugal fans 120 are arranged opposite to the two side walls of the U-shaped first heat exchanger 130.

[0083] It should be noted that "the two side walls of the first heat exchanger 130" refers to the two oppositely arranged walls of the U-shaped first heat exchanger 130 in the axial direction of the centrifugal fan 120.

[0084] For example, in the vertical direction, the frontal projection surface of the first heat exchanger 130 is U-shaped. The drive device 170 and the two centrifugal fans 120 are all located in the groove 150 formed by the frontal projection surface of the first heat exchanger 130. The portion of the first heat exchanger 130 located in the axial direction of the centrifugal fans 120 is located on the opposite side of the two centrifugal fans 120. The air inlets 121 of the two centrifugal fans 120 are respectively arranged opposite to the portion of the first heat exchanger 130 arranged on the same side. It can also be understood that the air inlets 121 of the two centrifugal fans 120 are respectively arranged opposite to the two side walls of the U-shaped first heat exchanger 130, so that the airflow driven by the two centrifugal fans 120 can flow through the first heat exchanger 130, thereby increasing the heat exchange area between the first heat exchanger 130 and the airflow, which is beneficial to improving the heat exchange effect of the first heat exchanger 130 on the airflow, and thus beneficial to improving the heat exchange effect of the air conditioner 100 on the external environment.

[0085] In some embodiments of this utility model, the shielding member 140 is integrally disposed with the chassis 112; and / or, the shielding part 124 is integrally disposed with the centrifugal fan 120.

[0086] In some examples, the shielding member 140 is integrally formed with the chassis 112, that is, the shielding member 140 can be integrally formed with the chassis 112, which helps to simplify the assembly steps of the air conditioner 100 and improve the production and assembly efficiency of the air conditioner 100.

[0087] In some examples, the shielding part 124 is integrated with the centrifugal fan 120. Specifically, the shielding part 124 can be integrated with the volute 125, which helps to simplify the assembly steps of the air conditioner 100 and improve the production and assembly efficiency of the air conditioner 100.

[0088] In other examples, the shielding member 140 is integrally formed with the chassis 112, and the shielding part 124 is integrally formed with the centrifugal fan 120, which helps to further simplify the assembly steps of the air conditioner 100 and improve the production and assembly efficiency of the air conditioner 100.

[0089] like Figure 5 As shown, in some embodiments of the present invention, the shell assembly 110 further includes: a first shell 113 and a second shell 114. The first shell 113 is disposed above the chassis 112 and together with the chassis 112 defines a first mounting cavity. A first heat exchanger 130 and a centrifugal fan 120 are disposed in the first mounting cavity. The second shell 114 is disposed above the chassis 112 and together with the chassis 112 defines a second mounting cavity. A second heat exchanger is disposed in the second mounting cavity. The second shell 114 and the first shell 113 are spaced apart in a first direction of the chassis 112 to form a clearance area 115 between the first shell 113 and the second shell 114.

[0090] It should be noted that "first direction" can be understood as: within the horizontal plane containing the rotation axis of the centrifugal impeller 126, the direction perpendicular to the rotation axis of the centrifugal impeller 126. A schematic diagram of the specific direction can be found in [reference needed]. Figure 5 As shown.

[0091] For example, the first housing 113 is vertically disposed above the chassis 112, and the first housing 113 and the chassis 112 together define a first mounting cavity. The first mounting cavity can be used to arrange the first heat exchanger 130 and the centrifugal fan 120. By arranging the first heat exchanger 130 and the centrifugal fan 120 in the first mounting cavity, the first housing 113 can shield the first heat exchanger 130 and the centrifugal fan 120, so that the first housing 113 can protect the first heat exchanger 130 and the centrifugal fan 120 and reduce the risk of damage to the first heat exchanger 130 and the centrifugal fan 120.

[0092] The second shell 114 is disposed vertically above the chassis 112, and the second shell 114 and the chassis 112 together define a second mounting cavity. The second mounting cavity can be used to arrange the second heat exchanger, and by placing the second heat exchanger in the second mounting cavity, the second shell 114 can shield the second heat exchanger, so that the second shell 114 can protect the second heat exchanger and reduce the risk of damage to the second heat exchanger.

[0093] In the first direction of the chassis 112, the first housing 113 and the second housing 114 are spaced apart, so that the first mounting cavity and the second mounting cavity are spaced apart, which helps to prevent heat exchange between hot and cold airflows and improve the working performance of the air conditioner 100. In addition, the spaced arrangement of the first housing 113 and the second housing 114 in the first direction can also form a clearance area 115 between the first housing 113 and the second housing 114. The clearance area 115 can avoid external mounting structures, which helps to improve the assembly convenience of the air conditioner 100.

[0094] For example, the air conditioner can be a kitchen air conditioner, which is installed on the ceiling of the kitchen. The ceiling has a suspended ceiling and a joist for installing the suspended ceiling. The clearance area 115 can avoid the joist so that the joist for installing the suspended ceiling does not need to be disassembled when installing the kitchen air conditioner, which effectively improves the assembly convenience of the air conditioner 100.

[0095] In some examples, the first heat exchanger 130 can be configured as an evaporator and the second heat exchanger can be configured as a condenser.

[0096] 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.

[0097] 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 assembly has an air outlet duct. A centrifugal fan is disposed within the housing assembly. The centrifugal fan has an air inlet and an air outlet. The air outlet forms an air outlet. At least a portion of the air outlet extends into the air outlet duct, and the air outlet communicates with the air outlet duct. A first heat exchanger is disposed within the shell assembly, and at least a portion of the first heat exchanger is spaced apart from and opposite to the air inlet and air outlet in the axial direction of the centrifugal fan. A shielding member is disposed on the circumferential outer side of the air outlet duct and located between the first heat exchanger and the air outlet, and is used to shield the airflow blown from the first heat exchanger to the air outlet.

2. The air conditioner of claim 1, wherein The housing assembly includes a chassis with an air duct wall defining an air outlet duct that extends radially through the centrifugal fan. At least a portion of the air duct wall extends upward from the inner wall of the chassis. The shielding member is located on the inner wall of the chassis and spaced apart from the air duct wall.

3. The air conditioner of claim 2, wherein The inner wall of the duct wall is opposite to the outer wall of the air outlet, and the vertical distance between the inner wall of the duct wall and the outer wall of the air outlet is L1, which satisfies the relationship: 0.05mm≤L1≤3mm.

4. The air conditioner of claim 2, wherein The shielding component is constructed as a baffle, which extends upward from the inner wall of the chassis and defines an upwardly open groove with the air duct wall.

5. The air conditioner of claim 4, wherein The baffle extends in a ring shape and is arranged around the air duct wall in the circumferential direction.

6. The air conditioner of claim 4, wherein The outer wall of the air outlet is provided with a shielding part, which extends from the outer wall of the air outlet into the groove, and the shielding part is used to shield the gap between the air duct wall and the air outlet.

7. The air conditioner of claim 6, wherein The shielding part includes: The first rib extends from the outer wall of the air outlet toward the baffle side; The second rib is connected to the surface of the first rib opposite to the groove and extends into the groove; wherein, The connection between the first rib and the air outlet is located above the upper edge of the air duct wall.

8. The air conditioner of claim 6, wherein The air conditioner also includes a sealing element disposed within the groove, and the shielding portion abutting against the sealing element to form a seal between the air outlet and the chassis.

9. The air conditioner of claim 7, wherein In the extending direction of the air duct wall, the distance between the first rib and the upper edge of the air duct wall is L2, and satisfies the relationship: 0.5mm≤L2≤3mm.

10. The air conditioner of claim 1, wherein The housing assembly includes a chassis, the chassis having an air duct wall defining an air outlet duct that extends through the centrifugal fan in the radial direction. The lower edge of the air outlet defines the air outlet. The distance between the lower edge of the air outlet and the upper edge of the air duct wall in the direction in which the air outlet extends into the air outlet duct is L3, and satisfies the relationship: 1mm≤L3≤15mm.

11. The air conditioner of claim 1, wherein The air conditioner includes: The two centrifugal fans are arranged at intervals along the axial direction of the centrifugal fans, and each centrifugal fan has an air inlet on both sides in the axial direction. A drive unit is provided between the two centrifugal fans and is used to drive the two centrifugal fans.

12. The air conditioner of claim 11, wherein The first heat exchanger is U-shaped, and the air inlet sections of the two centrifugal fans are respectively positioned opposite to the two side walls of the U-shaped first heat exchanger.

13. The air conditioner of claim 6, wherein The shielding component is integrally formed with the chassis; and / or, The shielding part is integrally formed with the centrifugal fan.

14. The air conditioner of claim 2, wherein The shell assembly also includes: A first housing is disposed above the chassis and together with the chassis defines a first mounting cavity, wherein the first mounting cavity is provided with the first heat exchanger and the centrifugal fan; The second shell is disposed above the chassis and together with the chassis defines a second mounting cavity. A second heat exchanger is provided in the second mounting cavity. The second shell and the first shell are spaced apart in a first direction of the chassis to form a clearance area between the first shell and the second shell.

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