Air conditioner

Abstract

The utility model provides an air conditioner. The air conditioner comprises a machine shell, a heat exchanger, an air inlet wind wheel and an air outlet wind wheel. A first air inlet, a second air inlet and an air outlet are formed in the first side wall of the machine shell, and the second air inlet is located between the first air inlet and the air outlet. A first air inlet duct connected with the first air inlet, a second air inlet duct connected with the second air inlet and an air outlet duct connected with the air outlet are arranged in the machine shell. The heat exchanger is arranged on the downstream of the first air inlet duct and the second air inlet duct and on the upstream of the air outlet duct. The air inlet wind wheel is arranged in the first air inlet duct. And the air outlet wind wheel is arranged in the air outlet duct. According to the air conditioner, the air outlet volume and the air supply distance can be increased, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioner. Background Art

[0002] For an air conditioner embedded in a furniture cabinet (such as a kitchen cabinet or a TV cabinet), since its left and right sides and the rear side are blocked by the furniture cabinet, it is difficult to form effective return air channels on the left and right sides and the rear side. Usually, the air inlet and the air outlet are both arranged on the front panel. In this technical solution, due to the large change in the air flow direction, a large air loss will be generated, which will in turn lead to a small air supply volume and a short air supply distance of the air conditioner, affecting the user experience. Summary of the Utility Model

[0003] In view of the above problems, the present utility model is proposed to provide an air conditioner that overcomes the above problems or at least partially solves the above problems, aiming to solve the problems that the existing air conditioner has a small air supply volume and a short air supply distance, affecting the user experience.

[0004] Specifically, the present utility model provides the following technical solutions:

[0005] An air conditioner, comprising a housing, a heat exchanger, an inlet air wheel and an outlet air wheel.

[0006] A first air inlet, a second air inlet and an air outlet are formed on a first side wall of the housing, and the second air inlet is located between the first air inlet and the air outlet. A first air inlet duct connected to the first air inlet, a second air inlet duct connected to the second air inlet and an air outlet duct connected to the air outlet are arranged inside the housing.

[0007] The heat exchanger is arranged downstream of the first air inlet duct and the second air inlet duct and upstream of the air outlet duct.

[0008] The inlet air wheel is arranged inside the first air inlet duct.

[0009] The outlet air wheel is arranged inside the air outlet duct.

[0010] Optionally, both the inlet air wheel and the outlet air wheel are cross-flow air wheels, and the axis of the inlet air wheel is parallel to the axis of the outlet air wheel.

[0011] Optionally, the distance between the axis of the inlet air wheel and the first side wall is less than the distance between the axis of the outlet air wheel and the first side wall.

[0012] The axis of the inlet air wheel and the axis of the outlet air wheel are in a first plane, and the angle between the first plane and the first side wall is 5 - 30 degrees.

[0013] Optionally, the wheel diameter of the intake air impeller is smaller than that of the outlet air impeller.

[0014] Optionally, the heat exchanger includes a first heat exchange section and a second heat exchange section that form an angle with each other. The second heat exchange section is fixedly connected to one end of the first heat exchange section away from the first side wall and is on the side of the first plane away from the first side wall.

[0015] The first intake air duct includes a first volute side wall and a first tongue side wall. The second intake air duct is between the first tongue side wall and the first heat exchange section.

[0016] The first volute side wall and the first tongue side wall form a first diffuser duct on the outlet side of the intake air impeller. The first diffuser duct faces the second heat exchange section.

[0017] Optionally, the first volute side wall includes a volute diffuser section on the outlet side of the intake air impeller, and the first tongue side wall includes a tongue diffuser section formed on the outlet side of the intake air impeller. The first diffuser duct is between the volute diffuser section and the tongue diffuser section.

[0018] The angle between the tongue diffuser section and the first plane is 0 - 15 degrees. The angle between the tongue diffuser section and the second heat exchange section is 110 - 170 degrees.

[0019] Optionally, the angle between the first heat exchange section and the first plane is 95 - 135 degrees.

[0020] Optionally, the air conditioner is vertically arranged.

[0021] The height of the first air inlet is greater than the width. The height of the second air inlet is greater than the width. The height of the air outlet is greater than the width. The outlet air impeller extends along the height direction of the air outlet.

[0022] The width of the first air inlet is smaller than the width of the second air inlet. The width of the air outlet is smaller than the width of the second air inlet.

[0023] Optionally, the intake air impeller is drivingly connected to a first motor. The outlet air impeller is drivingly connected to a second motor.

[0024] Optionally, the outlet air impeller is coaxially drivingly connected to an output shaft of a dual - shaft motor. The other output shaft of the dual - shaft motor is drivingly connected to the intake air impeller through a transmission mechanism.

[0025] The air conditioner of the present utility model is provided with a first air inlet, a first air inlet duct, and an air inlet impeller disposed in the first air inlet duct. The air inlet impeller can prompt more airflows to quickly enter from the first air inlet and be discharged onto the heat exchanger, forming a relatively large static pressure and flow velocity at the heat exchanger, prompting a large flow of air to enter the air outlet duct, and then being blown out through the air outlet impeller and the air outlet. That is, by increasing the flow rate of the inlet air, the air outlet volume and the air supply distance of the air conditioner are increased. On the other hand, due to the provision of the air inlet impeller, the air inlet flow velocity at the first air inlet will be greater than that at the second air inlet. By arranging the first air inlet on the side of the second air inlet away from the air outlet, the air inlet flow at the first air inlet and the air outlet flow at the air outlet are spatially separated, which can reduce or avoid the mutual interference between the air inlet flow at the first air inlet and the air outlet flow on the outside of the first side wall, thereby further increasing the flow rate of the inlet air and the air supply distance of the air outlet flow, achieving the effect of improving the user experience.

[0026] Based on the following detailed description of specific embodiments of the present utility model in conjunction with the accompanying drawings, those skilled in the art will more clearly understand the above and other objects, advantages, and features of the present utility model. Brief Description of the Drawings

[0027] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0028] Figure 1 is a schematic structural view of an air conditioner according to an embodiment of the present utility model;

[0029] Figure 2 is a schematic front view of an air conditioner according to an embodiment of the present utility model;

[0030] Figure 3 is Figure 2 a schematic cross-sectional view along the A-A axis in

[0031] Figure 4 is a schematic front view of an air inlet impeller, an air outlet impeller, a first motor, and a second motor of an air conditioner according to an embodiment of the present utility model;

[0032] Figure 5 is a schematic front view of an air inlet impeller, an air outlet impeller, a dual-axis motor, and a transmission mechanism of an air conditioner according to an embodiment of the present utility model.

[0033] List of Reference Numerals:

[0034] 10. Air conditioner; 20. Cabinet; 21. First side wall; 31. First air inlet; 32. First air inlet duct; 321. First diffuser duct; 341. Volute diffuser section; 351. Tongue diffuser section; 33. Inlet air wheel; 34. First volute side wall; 341. Volute diffuser section; 35. First tongue side wall; 351. Tongue diffuser section; 41. Second air inlet; 42. Second air inlet duct; 51. Air outlet; 52. Air outlet duct; 53. Outlet air wheel; 60. Heat exchanger; 61. First heat exchange section; 62. Second heat exchange section; 71. Second motor; 72. First motor; 73. Biaxial motor; 74. Transmission mechanism; 80. First plane. Detailed implementation manners

[0035] The air conditioner according to the embodiment of the present utility model will be described below with reference to Figures 1 to 5 In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, including one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0036] Unless otherwise clearly specified and defined, terms such as "arranged", "installed", "connected", "connected to", "fixed", "coupled", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to specific circumstances.

[0037] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. That is, in the description of this embodiment, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "beneath", or "under" the second feature may be the first feature being directly below or obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0038] In the description of this embodiment, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0039] Figure 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present utility model, as Figure 1 shown, and with reference to Figures 2 - 5 This embodiment of the present utility model provides an air conditioner, which includes a casing 20, a heat exchanger 60, an inlet air blower 33, and an outlet air blower 53.

[0040] A first air inlet 31, a second air inlet 41, and an air outlet 51 are formed on a first side wall 21 of the casing 20, and the second air inlet 41 is located between the first air inlet 31 and the air outlet 51. A first air inlet duct 32 connected to the first air inlet 31, a second air inlet duct 42 connected to the second air inlet 41, and an air outlet duct 52 connected to the air outlet 51 are provided inside the casing 20.

[0041] The heat exchanger 60 is disposed downstream of the first air inlet duct 32 and the second air inlet duct 42, and upstream of the air outlet duct 52.

[0042] The inlet air blower 33 is disposed inside the first air inlet duct 32.

[0043] The outlet air blower 53 is disposed inside the air outlet duct 52.

[0044] The air conditioner 10 can be a floor-standing air conditioner, which can be embedded and installed in a storage space of a furniture cabinet (such as a kitchen cabinet, a TV cabinet, a wardrobe), placed on the bottom partition or the bottom floor of the furniture cabinet, and the first side wall 21 faces the opening of the storage space. The air conditioner 10 can also be a wall-mounted air conditioner, which can be embedded and installed in a storage space of a furniture cabinet and hung on the back panel of the furniture cabinet or the back wall.

[0045] The casing 20 generally includes a front shell, a left side shell, a right side shell, a rear shell, an upper shell, a base, etc. The first side wall 21 can be the front shell (also referred to as the front panel) of the casing 20, or can also be the left side shell, the right side shell, the rear shell, the upper shell, the base, etc. In this embodiment, the first side wall 21 is taken as the front panel of the casing 20 as an example to illustrate the technical solution of the present application.

[0046] The first air inlet 31, the second air inlet 41, and the air outlet 51 are all provided on the first side wall 21. The first air inlet 31, the second air inlet 41, and the air outlet 51 can be arranged at intervals or adjacent to each other in sequence along the first direction. The first direction can be set as needed. For example, the first direction can be the vertical direction, the horizontal direction, an inclined direction between the vertical direction and the horizontal direction, etc.

[0047] Exemplarily, as Figure 2 shown, when the first direction is the horizontal direction, the first air inlet 31 can be arranged on the left side of the front panel, the second air inlet 41 can be arranged in the middle of the front panel, and the air outlet 51 can be arranged on the right side of the front panel.

[0048] The first air inlet 31 is connected to the first air inlet duct 32 at the back. The second air inlet 41 is connected to the second air inlet duct 42 at the back. The airflows of the first air inlet duct 32 and the second air inlet duct 42 converge into the air outlet duct 52 and are finally blown out through the air outlet 51. The heat exchanger 60 is arranged at the outlets of the first air inlet duct 32 and the second air inlet duct 42 and at the inlet of the air outlet duct 52, and is used for adjusting the temperature and humidity of the passing airflow.

[0049] The air outlet impeller 53 is arranged in the air outlet duct 52 and is used for extracting the airflows in the first air inlet duct 32 and the second air inlet duct 42 and then blowing them out through the air outlet 51. The air outlet impeller 53 can be a centrifugal impeller, an axial flow impeller, a cross-flow impeller, etc.

[0050] Since both the air inlets and the air outlet 51 are provided on the first side wall 21, when the air conditioner 10 operates, the air in front of the air conditioner 10 first flows backward into the air inlets, and then needs to turn multiple times in the air inlet ducts and the air outlet duct 52. After completing a turn of nearly 180 degrees, it can be blown out through the air outlet 51. Due to the large change in the air path direction, the airflow will generate a large air loss. If only relying on the air outlet impeller 53 to provide power for the airflow, it will inevitably lead to a small air outlet volume and a short air supply distance of the air conditioner 10, affecting the user experience.

[0051] In this embodiment, the air conditioner 10 is provided with a first air inlet 31, a first air inlet duct 32, and an air inlet impeller 33 in the first air inlet duct 32. The air inlet impeller 33 can be a centrifugal impeller, an axial flow impeller, a cross-flow impeller, etc. The air inlet impeller 33 can prompt more airflow to quickly enter from the first air inlet 31 and be discharged onto the heat exchanger 60, forming a large static pressure and flow rate at the heat exchanger 60, prompting a large flow of airflow to enter the air outlet duct 52, and then being blown out through the air outlet impeller 53 and the air outlet 51. That is, by increasing the flow rate of the inlet airflow, the air outlet volume and the air supply distance of the air conditioner 10 are increased.

[0052] On the other hand, due to the provision of the intake air impeller 33, the intake air flow velocity at the first air inlet 31 will be greater than that at the second air inlet 41. By arranging the first air inlet 31 on the side of the second air inlet 41 that is far from the air outlet 51, the intake air flow at the first air inlet 31 and the air outlet flow at the air outlet 51 are spatially separated, which can reduce or avoid the mutual interference between the intake air flow and the air outlet flow outside the first side wall 21, thereby further increasing the flow rate of the intake air flow and the air supply distance of the air outlet flow, achieving the effect of improving the user experience.

[0053] In some embodiments of the air conditioner of the present utility model, as Figures 3 - 5 shown, both the intake air impeller 33 and the air outlet impeller 53 are cross-flow impellers, and the axis of the intake air impeller 33 is parallel to the axis of the air outlet impeller 53.

[0054] In this embodiment, both the intake air impeller 33 and the air outlet impeller 53 are cross-flow impellers. Correspondingly, both the first intake air duct 32 and the air outlet duct 52 are provided with a volute structure and a volute tongue structure. Based on the aerodynamic characteristics of the cross-flow impeller, on the one hand, the intake air impeller 33 and the air outlet impeller 53 can generate a relatively large air volume, and on the other hand, while providing power for the air flow, they can change the angle of the air flow direction.

[0055] As Figure 3 shown, by arranging the intake air impeller 33 parallel to the air outlet impeller 53 and setting the intake air impeller 33 and the air outlet impeller 53 at two key nodes of the air path turning, the advantage of the cross-flow impeller in changing the angle of the air flow direction can be fully utilized, reducing the air loss during turning and further increasing the air outlet volume and the air supply distance.

[0056] In addition, the cross-flow impeller also has the advantage of low noise. When the air conditioner 10 is embedded and installed in a furniture cabinet, except for the air outlet surface, other sides may be in a sealed structure. During operation, the furniture cabinet will converge and amplify the noise of the air conditioner 10, affecting the user experience. By setting both the intake air impeller 33 and the air outlet impeller 53 as cross-flow impellers, the noise of the air conditioner 10 can be minimized as much as possible under the same air volume, improving the user experience.

[0057] In some embodiments of the air conditioner of the present utility model, as Figure 3 shown, the distance L1 between the axis of the intake air impeller 33 and the first side wall 21 is less than the distance L2 between the axis of the air outlet impeller 53 and the first side wall 21.

[0058] The axes of the intake air impeller 33 and the air outlet impeller 53 are in the first plane 80, and the angle a between the first plane 80 and the first side wall 21 is 5 - 30 degrees.

[0059] In this embodiment, the length of the air inlet side of the first air inlet air duct 32 is less than the length of the air outlet side of the air outlet air duct 52. On the one hand, the flow rate of the air outlet air duct 52 is the sum of the flow rates of the first air inlet air duct 32 and the second air inlet air duct 42, that is, the flow rate of the first air inlet air duct 32 is less than that of the air outlet air duct 52. Therefore, the first air inlet air duct 32 does not require a long air duct to guide the inlet air flow. On the other hand, the air flow blown out by the air outlet impeller 53 has a high speed and a large dynamic pressure, and a long diffuser air duct needs to be provided for pressure diffusion to convert the dynamic pressure into static pressure and then blow it out from the air outlet 51.

[0060] In this embodiment, the axes of the air inlet impeller 33 and the air outlet impeller 53 are located on the first plane 80. By reasonably setting the included angle a between the first plane 80 and the first side wall 21, the air path turning angles of the two cross-flow impellers can be reasonably distributed at the air inlet impeller 33 and the air outlet impeller 53, thereby reducing the air loss during turning.

[0061] When the included angle a between the first plane 80 and the first side wall 21 is too large, the air outlet impeller 53 will bear an excessive air path turning task, and the air path turning ability of the air inlet impeller 33 will be idle. When the included angle a between the first plane 80 and the first side wall 21 is too small, the distance of the first air inlet air duct 32 will be unduly lengthened, resulting in more resistance to the air flow in the first air inlet air duct 32. Or, when the included angle a between the first plane 80 and the first side wall 21 is too small, the distance of the air outlet air duct 52 will be unduly shortened, resulting in insufficient pressure diffusion. 5-30 degrees is a preferred angle after comprehensively considering the above factors.

[0062] In some embodiments of the air conditioner of the present utility model, as Figure 3 shown, the wheel diameter R1 of the air inlet impeller 33 is smaller than the wheel diameter R2 of the air outlet impeller 53.

[0063] On the one hand, the flow rate of the air outlet air duct 52 is the sum of the flow rates of the first air inlet air duct 32 and the second air inlet air duct 42, that is, the flow rate of the first air inlet air duct 32 is less than that of the air outlet air duct 52. Therefore, the wheel diameter of the air inlet impeller 33 can be appropriately reduced to save manufacturing costs.

[0064] On the other hand, since the included angle a between the first plane 80 and the first side wall 21 is 5-30 degrees, the air inlet impeller 33 bears a small air path turning task. Therefore, the wheel diameter of the air inlet impeller 33 can be appropriately reduced.

[0065] In some embodiments of the air conditioner of the present utility model, as Figure 3 shown, the heat exchanger 60 includes a first heat exchange section 61 and a second heat exchange section 62 that form an included angle with each other. The second heat exchange section 62 is fixedly connected to one end of the first heat exchange section 61 away from the first side wall 21 and is located on the side of the first plane 80 away from the first side wall 21.

[0066] The first air inlet duct 32 includes a first volute side wall 34 and a first volute tongue side wall 35. The second air inlet duct 42 is located between the first volute tongue side wall 35 and the first heat exchange section 61.

[0067] The first volute side wall 34 and the first volute tongue side wall 35 form a first diffuser duct 321 on the air outlet side of the air inlet impeller 33. The first diffuser duct 321 faces the second heat exchange section 62.

[0068] In this embodiment, the first diffuser duct 321 is used to diffuse the air flow on the air outlet side of the air inlet impeller 33, convert the dynamic pressure of the air flow into static pressure, increase the static pressure in the area on the side of the heat exchanger 60 far from the air outlet duct 52, increase the pressure difference between the two sides of the heat exchanger 60, and promote the air flow in the air inlet duct to quickly enter the air outlet impeller 53.

[0069] An arc transition can be provided at the connection between the first heat exchange section 61 and the second heat exchange section 62 to reduce the generation of turbulence.

[0070] The second heat exchange section 62 is located at the rear side of the first plane 80, and the first diffuser duct 321 is located at the rear side of the second air inlet duct 42, so that the air flow in the first diffuser duct 321 mainly enters the second heat exchange section 62, and a part of the air flow in the second air inlet duct 42 enters the first heat exchange section 61, and the other part enters the second heat exchange section 62.

[0071] In this embodiment, the first diffuser duct 321 faces the second heat exchange section 62, so that the air flow in the first diffuser duct 321 mainly enters the second heat exchange section 62, preventing the air flow in the first diffuser duct 321 from interfering with or colliding with the air flow in the second air inlet duct 42 and avoiding wind loss.

[0072] In some embodiments of the air conditioner of the present utility model, as Figure 3 shown, the first volute side wall 34 includes a volute diffuser section 341 on the air outlet side of the air inlet impeller 33, and the first volute tongue side wall 35 includes a volute tongue diffuser section 351 formed on the air outlet side of the air inlet impeller 33. The first diffuser duct 321 is located between the volute diffuser section 341 and the volute tongue diffuser section 351.

[0073] The included angle b between the volute tongue diffuser section 351 and the first plane 80 is 0 - 15 degrees. The included angle c between the volute tongue diffuser section 351 and the second heat exchange section 62 is 110 - 170 degrees.

[0074] The volute diffuser section 341 and the volute tongue diffuser section 351 form two side walls of the first diffuser air duct 321. In this embodiment, the volute tongue diffuser section 351 can be linear or arc-shaped. When the volute tongue diffuser section 351 is arc-shaped, the angle between the volute tongue diffuser section 351 and the first plane 80 is the angle formed by the extension line of the end of the volute tongue diffuser section 351 and the first plane 80, and the angle between the volute tongue diffuser section 351 and the second heat exchange section 62 is the angle formed by the extension line of the end of the volute tongue diffuser section 351 and the second heat exchange section 62.

[0075] Due to the aerodynamic characteristics of the cross-flow fan, the volute diffuser section 341 has a strong dynamic pressure. By defining that the angle b between the volute tongue diffuser section 351 and the first plane 80 is greater than or equal to 0 degrees, it is possible to prevent the air flow in the first diffuser air duct 321 from flowing forward into the second air inlet duct 42 after passing through the volute diffuser section 341, interfering with or colliding with the air flow in the second air inlet duct 42, and avoiding wind loss. By defining that the angle b between the volute tongue diffuser section 351 and the first plane 80 is less than or equal to 15 degrees, and defining that the angle c between the volute tongue diffuser section 351 and the second heat exchange section 62 is 110 - 170 degrees, the air flow in the first diffuser air duct 321 can flow towards the second heat exchange section 62, forming a large pressure difference on both sides of the second heat exchange section 62, and prompting the air flow flowing out of the first diffuser air duct 321 and the air flow in the second air inlet duct 42 that has not entered the first heat exchange section 61 to smoothly and quickly enter the outlet fan 53 through the second heat exchange section 62.

[0076] On the other hand, by arranging the first diffuser air duct 321 at the rear side of the second air inlet duct 42, and by defining the angles of the angle b between the volute tongue diffuser section 351 and the first plane 80 and the angle c between the volute tongue diffuser section 351 and the second heat exchange section 62, under the action of the inlet fan 33, the speed of the air flow in the first diffuser air duct 321 is greater than the speed of the air flow at the end of the second air inlet duct 42, prompting the air flow at the end of the second air inlet duct 42 to be sucked into the first diffuser air duct 321, and then entering the outlet fan 53 through the second heat exchange section 62. In this way, the total air inlet flow rate of the second air inlet duct 42 can be increased, thereby increasing the total air outlet volume of the outlet air duct 52.

[0077] In some embodiments of the air conditioner of the present utility model, as Figure 3 shown, the angle d between the first heat exchange section 61 and the first plane 80 is 95 - 135 degrees.

[0078] When the angle d between the first heat exchange section 61 and the first plane 80 is too small, it is not conducive to the air flow in the second air inlet duct 42 passing through the first heat exchange section 61 to the right and entering the air outlet impeller 53. When the angle d between the first heat exchange section 61 and the first plane 80 is too large, it may cause the flow direction of the air flow at the rear side of the second air inlet duct 42 and the flow direction of the air flow at the end of the second air inlet duct 42 not to form an acute angle, affecting the air flow at the end of the second air inlet duct 42 being sucked into the first diffuser duct 321. 95-135 degrees is the preferred angle considering the above factors comprehensively.

[0079] In some embodiments of the air conditioner of the present utility model, as Figures 1 - 2 shown, the air conditioner 10 is vertically arranged.

[0080] The height of the first air inlet 31 is greater than the width. The height of the second air inlet 41 is greater than the width. The height of the air outlet 51 is greater than the width. The air outlet impeller 53 extends along the height direction of the air outlet 51.

[0081] The width of the first air inlet 31 is smaller than the width of the second air inlet 41. The width of the air outlet 51 is smaller than the width of the second air inlet 41.

[0082] In this embodiment, the air conditioner 10 is vertically arranged, and the first air inlet 31, the second air inlet 41, and the air outlet 51 are all vertically arranged long strips. In this way, the height span of the air inlets and the air outlet 51 in the vertical direction can be increased, and temperature stratification of the outlet air flow can be avoided.

[0083] In this embodiment, the second air inlet 41 has a relatively large width. On the one hand, the lateral interval between the first air inlet 31 and the air outlet 51 can be widened, preventing the relatively fast inlet air flow in front of the first air inlet 31 from interfering with and colliding with the relatively fast outlet air flow in front of the air outlet 51, thereby increasing the flow rate of the inlet air flow and the blowing distance of the outlet air flow.

[0084] On the other hand, under the condition of the same flow rate, the larger the cross-section of the second air inlet 41, the smaller the flow velocity of the air flow inside it. By increasing the width of the second air inlet 41, its cross-section can be increased, and the flow velocity of the inlet air flow in front of the second air inlet 41 can be reduced, preventing the inlet air flow from interfering with and colliding with the relatively fast outlet air flow in front of the air outlet 51, thereby increasing the flow rate of the inlet air flow and the blowing distance of the outlet air flow.

[0085] In this embodiment, the air conditioner 10 can be vertically installed in a furniture cabinet. For example, the air conditioner 10 can be vertically installed in the TV cabinet on the left or right side of the TV, taking in air from the front side and discharging air from the front side, improving the user experience of the users in the area in front of the TV.

[0086] In some embodiments of the air conditioner of the present utility model, as Figure 4As shown, the intake air impeller 33 is drivingly connected to the first motor 72. The outlet air impeller 53 is drivingly connected to the second motor 71.

[0087] In this embodiment, the first motor 72 can be coaxially drivingly connected to the intake air impeller 33, and the first motor 72 can be coaxially drivingly connected to the outlet air impeller 53 to improve the transmission efficiency and reduce the manufacturing cost. The first motor 72 can be located above or below the intake air impeller 33, and the second motor 71 can be located above or below the outlet air impeller 53, which can be selected and set according to needs.

[0088] In this embodiment, the intake air impeller 33 and the outlet air impeller 53 are each independently drivingly connected to a motor, so that the intake air impeller 33 and the outlet air impeller 53 can independently adjust their speeds, so as to adapt the speed of the intake air impeller 33 to the speed of the outlet air impeller 53 under various working conditions, thereby improving the air volume and the air supply distance of the air conditioner 10.

[0089] In some embodiments of the air conditioner of the present utility model, as Figure 5 shown, the outlet air impeller 53 is coaxially drivingly connected to an output shaft of the dual-axis motor 73. The other output shaft of the dual-axis motor 73 is drivingly connected to the intake air impeller 33 through a transmission mechanism 74.

[0090] The transmission mechanism 74 can be a belt transmission mechanism 74, a chain transmission mechanism 74, a gear mechanism, etc. By providing the dual-axis motor 73, the intake air impeller 33 and the outlet air impeller 53 share one motor, which can reduce the manufacturing cost of the air conditioner 10.

[0091] In actual use, the reduction ratio of the transmission mechanism 74 can be set according to needs. For example, the reduction ratio can be set to 1, and the wheel diameter of the intake air impeller 33 can be set to be smaller than the wheel diameter of the outlet air impeller 53 to increase the flow rate of the outlet air impeller 53.

[0092] In the case where the wheel diameter of the outlet air impeller 53 is larger than the wheel diameter of the intake air impeller 33, since the dual-axis motor 73 coaxially drives the outlet air impeller 53, the transmission efficiency is higher than that of the transmission mechanisms 74 such as the belt transmission mechanism 74, the chain transmission mechanism 74, and the gear mechanism, which can make the outlet air impeller 53 have a relatively large flow rate and form a strong air volume of the outlet air.

[0093] So far, those skilled in the art should recognize that although multiple exemplary embodiments of the present utility model have been shown and described in detail herein, still, without departing from the spirit and scope of the present utility model, many other variations or modifications that conform to the principles of the present utility model can be directly determined or derived based on the content disclosed in the present utility model. Therefore, the scope of the present utility model should be understood and determined to cover all these other variations or modifications.

Claims

1. An air conditioner, characterized in that, Comprising: A casing, on the first side wall of which there are a first air inlet, a second air inlet and an air outlet, and the second air inlet is between the first air inlet and the air outlet; inside the casing there are arranged a first air inlet duct connected to the first air inlet, a second air inlet duct connected to the second air inlet, and an air outlet duct connected to the air outlet; A heat exchanger, arranged downstream of the first air inlet duct and the second air inlet duct and upstream of the air outlet duct; An inlet air wheel, arranged inside the first air inlet duct; An outlet air wheel, arranged inside the air outlet duct.

2. The air conditioner according to claim 1, wherein Both the inlet air wheel and the outlet air wheel are cross-flow air wheels, and the axis of the inlet air wheel is parallel to the axis of the outlet air wheel.

3. The air conditioner according to claim 2, wherein The distance from the axis of the inlet air wheel to the first side wall is less than the distance from the axis of the outlet air wheel to the first side wall; The axis of the inlet air wheel and the axis of the outlet air wheel are in a first plane, and the angle between the first plane and the first side wall is 5 - 30 degrees.

4. The air conditioner according to claim 3, characterized in that The wheel diameter of the inlet air wheel is less than the wheel diameter of the outlet air wheel.

5. The air conditioner according to claim 3, wherein The heat exchanger includes a first heat exchange section and a second heat exchange section that form an angle with each other; the second heat exchange section is fixedly connected to the end of the first heat exchange section far from the first side wall and is on the side of the first plane far from the first side wall; The first air inlet duct includes a first volute side wall and a first tongue side wall; the second air inlet duct is between the first tongue side wall and the first heat exchange section; The first volute side wall and the first tongue side wall form a first diffuser duct on the air outlet side of the inlet air wheel; the first diffuser duct faces the second heat exchange section.

6. The air conditioner according to claim 5, wherein The first volute side wall includes a volute diffuser section on the air outlet side of the inlet air wheel, and the first tongue side wall includes a tongue diffuser section formed on the air outlet side of the inlet air wheel; the first diffuser duct is between the volute diffuser section and the tongue diffuser section; The angle between the tongue diffuser section and the first plane is 0 - 15 degrees; the angle between the tongue diffuser section and the second heat exchange section is 110 - 170 degrees.

7. The air conditioner according to claim 6, wherein The angle between the first heat exchange section and the first plane is 95 - 135 degrees.

8. The air conditioner according to claim 2, wherein The air conditioner is vertically arranged; The height of the first air inlet is greater than the width; the height of the second air inlet is greater than the width; the height of the air outlet is greater than the width; the outlet air wheel extends along the height direction of the air outlet; The width of the first air inlet is less than the width of the second air inlet; the width of the air outlet is less than the width of the second air inlet.

9. The air conditioner according to claim 2, wherein The air outlet impeller is coaxially and drivingly connected to an output shaft of a dual-axis motor; the other output shaft of the dual-axis motor is drivingly connected to the air inlet impeller through a transmission mechanism.

10. The air conditioner according to claim 1, wherein The air inlet impeller is drivingly connected to a first motor; the air outlet impeller is drivingly connected to a second motor.

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