Cabinet air conditioner

Abstract

The application provides a cabinet type air conditioner. The air conditioner comprises a casing, an air outlet air duct, a first air inlet air duct and a second air inlet air duct. A first air inlet, a second air inlet and an air outlet are sequentially and spaced apart in a transverse direction on a first side wall of the casing. The second air inlet is between the first air inlet and the air outlet. An outlet of the air outlet air duct is connected to the air outlet. An air outlet fan wheel is arranged in the air outlet air duct. An inlet side of the air outlet fan wheel comprises a first inlet and a second inlet, and the second inlet is on a side of the first inlet close to the first side wall. The first air inlet air duct is formed between the first air inlet and the first inlet, and a first air inlet fan wheel is arranged in the first air inlet air duct. The second air inlet air duct is formed between the second air inlet and the second inlet. The application can improve the air volume and air supply distance of the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, in particular to a cabinet air conditioner. BACKGROUND

[0002] For a cabinet air conditioner embedded in a furniture cabinet (for example, a kitchen cabinet or a TV cabinet), since the left and right sides and the back side of the cabinet air conditioner are blocked by the furniture cabinet, it is difficult to form an effective return air passage on the left and right sides and the back side. Therefore, the air inlet and the air outlet are usually arranged on the front panel. In this technical solution, since the direction of the air path changes greatly, a large amount of air loss is generated, which further leads to a small air volume and a short air supply distance of the air conditioner, thereby affecting the user experience. SUMMARY

[0003] In view of the above problems, the present application is proposed to provide a cabinet air conditioner which overcomes the above problems or at least partially solves the above problems, and aims to solve the problem of a small air volume and a short air supply distance of the existing air conditioner, which affects the user experience.

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

[0005] A cabinet air conditioner comprises a casing, an air outlet air duct, a first air inlet air duct and a second air inlet air duct.

[0006] A first air inlet, a second air inlet and an air outlet are sequentially and transversely arranged on a first side wall of the casing. The second air inlet is between the first air inlet and the air outlet.

[0007] An outlet of the air outlet air duct is connected to the air outlet. An air outlet fan is arranged in the air outlet air duct. An inlet side of the air outlet fan comprises a first inlet and a second inlet, and the second inlet is on a side of the first inlet close to the first side wall.

[0008] The first air inlet air duct is formed between the first air inlet and the first inlet, and a first air inlet fan is arranged in the first air inlet air duct.

[0009] The second air inlet air duct is formed between the second air inlet and the second inlet.

[0010] Optionally, the air outlet fan and the first air inlet fan are both cross-flow fans and are arranged vertically.

[0011] The air conditioner further comprises a heat exchanger arranged vertically, and the heat exchanger comprises a first heat exchange section and a second heat exchange section fixedly connected. The first heat exchange section is arranged in the first air inlet air duct, and the second heat exchange section is arranged in the second air inlet air duct.

[0012] Optionally, a third air inlet is arranged on the first side wall of the shell, and the third air inlet is arranged on the upper side or the lower side of the second air inlet.

[0013] A third air inlet duct is connected to the inner side of the third air inlet, and the outlet end of the third air inlet duct is arranged in the first air inlet duct and between the first air inlet fan and the first heat exchange section. A second air inlet fan is arranged in the third air inlet duct.

[0014] Optionally, the third air inlet is arranged on the upper side of the second air inlet. The second air inlet fan is a centrifugal fan.

[0015] The inlet side of the second air inlet fan is upwardly open, and the outlet end of the third air inlet duct is downwardly open.

[0016] Optionally, the air conditioner further comprises a first motor, and the first motor is arranged on the upper side of the air outlet fan. The first motor is drivingly connected to the air outlet fan, and the first motor is drivingly connected to the second air inlet fan.

[0017] Optionally, the first motor is a double-shaft motor, one end of the first motor is coaxially fixedly connected to the air outlet fan, and the other end of the first motor is coaxially fixedly connected to the second air inlet fan.

[0018] Optionally, the distance between the outlet end of the third air inlet duct and the upper end of the heat exchanger is less than 1 / 4 of the height of the heat exchanger.

[0019] Optionally, the upper end of the first air inlet fan is lower than the upper end of the heat exchanger, and the lower end of the first air inlet fan is higher than the lower end of the heat exchanger.

[0020] Optionally, the distance between the axis of the first air inlet fan and the first side wall is less than the distance between the axis of the air outlet fan and the first side wall. The axis of the first air inlet fan and the axis of the air outlet fan are arranged on a first plane, and the angle between the first plane and the first side wall is 5-30 degrees.

[0021] The first air inlet duct comprises a diffuser duct formed on the outlet side of the first air inlet fan. The diffuser duct is arranged on the side of the first plane away from the first side wall. The outlet end of the third air inlet duct is arranged between the diffuser duct and the first heat exchange section.

[0022] Optionally, the outlet side of the first air inlet fan is provided with a volute side wall and a volute tongue side wall. The diffuser duct is formed between the volute side wall and the volute tongue side wall.

[0023] The volute-lip side type wall is located at a side of the volute side type wall close to the first side wall. The volute-lip side type wall forms an angle of 0-15 degrees with the first plane.

[0024] Optionally, the first heat exchange section forms an angle of 110-170 degrees with the volute-lip side type wall.

[0025] Optionally, the second heat exchange section forms an angle of 55-85 degrees with the first side wall.

[0026] The cabinet type air conditioner of the present application is provided with a second air inlet and an air outlet on the first side wall, and an air outlet fan wheel in the air outlet air duct, so that part of the air in front of the first side wall enters the air outlet fan wheel through the second air inlet, the second air inlet air duct and the second inlet under the suction of the air outlet fan wheel, and is then blown out of the air outlet. The first air inlet is provided on the first side wall, and the first air inlet fan wheel is provided in the first air inlet air duct, so that part of the air in front of the first side wall enters the air outlet fan wheel through the first air inlet, the first air inlet air duct and the first inlet under the suction of the first air inlet fan wheel and the air outlet fan wheel, and is then blown out of the air outlet. That is, the first air inlet air duct can supply air to the air outlet fan wheel, and by increasing the flow of the inlet air flow, the air loss caused by the large change in the direction of the air path is compensated for, so that the air volume and the air supply distance of the air conditioner are improved.

[0027] On the other hand, due to the provision of the first air inlet fan wheel, the flow rate of the air at the first air inlet is 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 fast inlet air flow of the first air inlet and the fast outlet air flow of the air outlet are spaced apart in the transverse direction, which can reduce or avoid the mutual interference of the inlet air flow of the first air inlet and the outlet air flow of the air outlet on the front side of the first side wall, thereby further improving the flow of the inlet air flow, the air volume and the air supply distance.

[0028] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, when considered with the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] Some specific embodiments of the present application will be described in detail hereinafter with reference to the attached drawings, which are presented by way of illustration and not of limitation. The same reference numbers in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0030] Figure 1 is a schematic front view of a cabinet type air conditioner according to an embodiment of the present application;

[0031] Figure 2This is a schematic structural diagram of a cabinet-type air conditioner according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic cross-sectional view of a cabinet air conditioner according to an embodiment of the present invention along a first plane;

[0033] Figure 4 yes Figure 1 A schematic cross-sectional view along the AA axis;

[0034] Figure 5 This is a schematic structural diagram of a first air intake fan, an air outlet fan, a first motor, and a second air intake fan of an air conditioner according to an embodiment of the present invention.

[0035] List of reference numerals in the attached diagram:

[0036] 10. Casing; 11. First sidewall; 21. First air inlet; 22. First air inlet duct; 221. Diffuser duct; 222. Volute sidewall; 223. Volute tongue sidewall; 23. First air inlet impeller; 24. Second motor; 31. Second air inlet; 32. Second air inlet duct; 41. Air outlet; 42. Air outlet duct; 43. Air outlet impeller; 44. First inlet; 45. Second inlet; 46. First motor; 51. Third air inlet; 52. Third air inlet duct; 53. Second air inlet impeller; 531. Inlet side of the second air inlet impeller; 54. Outlet end of the third air inlet duct; 55. Air guide pipe; 60. Heat exchanger; 61. First heat exchange section; 62. Second heat exchange section; 70. First plane. Detailed Implementation

[0037] The following reference Figures 1 to 5 This invention describes a cabinet-type air conditioner according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0038] Unless otherwise defined, the terms "set", "mount", "connected", "linking", "fixed", "coupling" and the like are to be construed in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly defined. Those skilled in the art should be able to understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0039] In addition, in the description of the present embodiment, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. That is, in the description of the present embodiment, the first feature "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "below", "under" or "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0040] In the description of the present embodiment, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Figure 1 is a schematic front view of a cabinet air conditioner according to an embodiment of the present application, as Figure 1 shown, and referring to Figures 2-5 The embodiment of the present application provides a cabinet air conditioner, which comprises a shell 10, an air outlet air duct 42, a first air inlet air duct 22 and a second air inlet air duct 32.

[0042] The first side wall 11 of the shell 10 is provided with a first air inlet 21, a second air inlet 31 and an air outlet 41 in sequence and transversely. The second air inlet 31 is between the first air inlet 21 and the air outlet 41.

[0043] The outlet of the air outlet air duct 42 is connected to the air outlet 41. An air outlet fan 43 is arranged in the air outlet air duct 42. The inlet side of the air outlet fan 43 includes a first inlet 44 and a second inlet 45, and the second inlet 45 is located on the side of the first inlet 44 close to the first side wall 11.

[0044] A first air inlet air duct 22 is formed between the first air inlet 21 and the first inlet 44, and a first air inlet fan 23 is arranged in the first air inlet air duct 22.

[0045] A second air inlet air duct 32 is formed between the second air inlet 31 and the second inlet 45.

[0046] The cabinet air conditioner generally includes a front side wall, a left side wall, a right side wall, a rear side wall, a top cover, a base and the like. The cabinet air conditioner can be embeddedly installed in a storage space of a furniture cabinet (for example, a kitchen cabinet, a TV cabinet) or a wall, for example, embeddedly installed in a cabinet grid of a TV cabinet. The cabinet grid can be open to the front, or open to the left or right, and correspondingly, the first side wall 11 can be a front side wall, a left side wall or a right side wall.

[0047] The cabinet air conditioner can be installed in a vertical manner, that is, the base of the air conditioner is placed on the bottom plate of the cabinet grid or the floor in the cabinet grid. The cabinet air conditioner can also be installed in a wall-mounted manner, that is, the rear side wall of the air conditioner is hung on the back plate of the cabinet grid or the wall in the cabinet grid. The cabinet air conditioner can also be installed in a ceiling-mounted manner, that is, the top cover of the air conditioner is hung on the top plate of the cabinet grid or the roof in the cabinet grid.

[0048] For a cabinet air conditioner embeddedly installed in a furniture cabinet or a wall, since the left and right sides and the rear side are all blocked, it is difficult to form effective return air passages on the left and right sides and the rear side. Therefore, the air inlet and the air outlet are usually arranged on the front panel, that is, a front-in front-out air flow loop is formed. In this air flow loop, the direction of the air path is approximately 180 degrees, and the air flow in the air duct needs to be turned multiple times, which will cause large wind loss, and further result in small air outlet air volume and short air supply distance of the air conditioner, affecting the user experience.

[0049] In the embodiment, the second air inlet 31 and the air outlet 41 are arranged on the first side wall 11, and the air outlet fan 43 is arranged in the air outlet air duct 42, so that a part of air on the front side of the first side wall 11 enters the air outlet fan 43 through the second air inlet 31, the second air inlet air duct 32 and the second inlet 45 under the suction of the air outlet fan 43, and is then blown out of the air outlet 41 by the air outlet fan 43. The air outlet fan 43 can be a cross-flow fan, a centrifugal fan, an axial flow fan or the like, which is selected and arranged in the air outlet air duct 42 as needed. The first inlet 44 and the second inlet 45 are air suction inlets of the air outlet fan 43. The first inlet 44 and the second inlet 45 can be two air inlets connected to each other, or two air inlets arranged at a distance from each other, which is not limited here.

[0050] The first air inlet 21 is arranged on the first side wall 11, and the first air inlet fan 23 is arranged in the first air inlet air duct 22, so that a part of air on the front side of the first side wall 11 enters the air outlet fan 43 through the first air inlet 21, the first air inlet air duct 22 and the first inlet 44 under the suction of the first air inlet fan 23 and the air outlet fan 43, and is then blown out of the air outlet 41 by the air outlet fan 43. The first air inlet fan 23 can be a cross-flow fan, a centrifugal fan, an axial flow fan or the like, which is selected and arranged in the first air inlet air duct 22 as needed. Since the first air inlet air duct 22 and the first air inlet fan 23 can supply air to the air outlet fan 43, the flow rate of the inlet air flow is increased, the air loss caused by the large change in the direction of the air path is compensated, and the air volume and the air supply distance of the air conditioner are improved.

[0051] On the other hand, since the first air inlet fan 23 is arranged, the flow rate of air at the first air inlet 21 is greater than that of air at the second air inlet 31. By arranging the first air inlet 21 on the side of the second air inlet 31 away from the air outlet 41, the fast inlet air flow of the first air inlet 21 and the fast outlet air flow of the air outlet 41 are spaced apart in the transverse direction, which can reduce or avoid the mutual interference of the inlet air flow of the first air inlet 21 and the outlet air flow on the front side of the first side wall 11, thereby further improving the flow rate of the inlet air flow and the air supply distance of the outlet air flow.

[0052] It should be understood that the embodiment is not limited to the specific position of the heat exchanger 60 of the air conditioner. The heat exchanger 60 can be arranged in the first air inlet air duct 22, the second air inlet air duct 32, the air outlet air duct 42 or the like, and is used for temperature regulation, humidity regulation or the like of the inlet air flow or the outlet air flow.

[0053] In some embodiments of the air conditioner of the present application, as shown in Figures 3-5 The air outlet fan 43 and the first air inlet fan 23 are both cross-flow fans, and are arranged in the vertical direction.

[0054] The air conditioner further comprises a heat exchanger 60 arranged vertically, which comprises a first heat exchange section 61 and a second heat exchange section 62 fixedly connected. The first heat exchange section 61 is arranged in the first air inlet air duct 22, and the second heat exchange section 62 is arranged in the second air inlet air duct 32.

[0055] In the embodiment, the air outlet fan 43 and the first air inlet fan 23 are tubular fans, and are arranged vertically. Correspondingly, the first air inlet air duct 22 and the air outlet air duct 42 can each be provided with a volute structure and a volute tongue structure. The tubular fan is a cross-flow fan. Based on the aerodynamic characteristics of the tubular fan, the air inlet fan and the air outlet fan 43 can generate a large air volume on the one hand, and can change the angle of the airflow on the other hand while providing power for the airflow. The air outlet fan 43 can be drivingly connected to the first motor 46, and the first air inlet fan 23 can be drivingly connected to the second motor 24.

[0056] As shown in Figure 4 , by arranging the air inlet fan parallel to the air outlet fan 43, the first air inlet fan 23 and the air outlet fan 43 can be arranged at two key nodes of the air path turning. The first air inlet fan 23 can promote the airflow at the first air inlet 21 to turn in the direction of the air outlet fan 43, and the air outlet fan 43 can promote the airflow at the ends of the first air inlet air duct 22 and the second air inlet air duct 32 to turn in the direction of the air outlet 41. In this way, the advantages of the tubular fan in changing the angle of the airflow can be fully utilized, the wind loss of the airflow during turning can be reduced, and the air volume and the air supply distance of the air conditioner can be further improved.

[0057] In addition, the tubular fan also has the advantage of low noise. When the air conditioner is embeddedly installed in the cabinet, the cabinet may be close to or in contact with the partition of the cabinet on the other side of the cabinet 10 except the first side wall 11. During operation, the cabinet can converge and amplify the noise of the air conditioner, affecting the user experience. By arranging the first air inlet fan 23 and the air outlet fan 43 as tubular fans, the noise of the air conditioner can be reduced as much as possible under the same air volume, and the user experience can be improved.

[0058] In the case where the air outlet fan 43 is a tubular fan, the first inlet 44 and the second inlet 45 jointly form an inlet angle of the air outlet fan 43. As shown in Figure 4 , the first inlet 44 and the second inlet 45 are connected at one end close to each other, the other end of the first inlet 44 extends to the rear end of the volute of the air outlet air duct 42, and the other end of the second inlet 45 extends to the rear end of the volute tongue of the air outlet air duct 42.

[0059] The heat exchanger 60 is arranged vertically, and the height of the heat exchanger 60 can be consistent with the height of the air outlet fan 43.

[0060] The first heat exchange section 61 can be arranged upstream of the first inlet 44 for heat exchange of the air flow of the first air inlet duct 22. The second heat exchange section 62 can be arranged upstream of the second inlet 45 for heat exchange of the air flow of the second air inlet duct 32. The first heat exchange section 61 and the second heat exchange section 62 can be fixedly connected in abutment or can be arranged at intervals and fixedly connected by a support. When the first heat exchange section 61 and the second heat exchange section 62 are fixedly connected in abutment, an excessive round corner can be arranged at the abutment to reduce air flow resistance and to reduce turbulence generated at the front side of the heat exchanger 60.

[0061] The first heat exchange section 61 and the second heat exchange section 62 can have a certain included angle, for example, form an acute angle, to wrap around the air inlet side of the air outlet fan 43. In use, it can be arranged as needed.

[0062] In some embodiments of the air conditioner of the present application, as shown in Figures 1-4 The first side wall 11 of the casing 10 is further provided with a third air inlet 51, which is arranged at the upper side or the lower side of the second air inlet 31.

[0063] The third air inlet 51 is connected with a third air inlet duct 52, and the outlet end 54 of the third air inlet duct is arranged in the first air inlet duct 22 and between the first air inlet fan 23 and the first heat exchange section 61. The third air inlet duct 52 is provided with a second air inlet fan 53.

[0064] Since the first air inlet 21 is farther away from the air outlet fan 43 and the air outlet 41 than the second air inlet 31, the length of the first air inlet duct 22 is greater than that of the second air inlet duct 32, and the resistance of the air inlet duct to the air flow is relatively large. In the present embodiment, the third air inlet duct 52 and the second air inlet fan 53 are introduced to further increase the flow of the air flow in the first air inlet duct 22. The second air inlet fan 53 is used to suck the air in front of the third air inlet 51 into the third air inlet duct 52, and then discharge it from the outlet end 54 of the third air inlet duct to the upstream of the first heat exchange section 61 to increase the air flow into the first heat exchange section 61 and the first inlet 44, thereby increasing the air inlet and air outlet of the air outlet fan 43.

[0065] The second air inlet fan 53 can be a cross-flow fan, a centrifugal fan, an axial flow fan, etc., which can be selected and arranged in the third air inlet duct 52 as needed.

[0066] The third air inlet 51 can be located at the upper side of the second air inlet 31, for example, at the top cover of the first side wall 11 close to the shell 10. The second air inlet fan 53 can suck air from the third air inlet 51 at a relatively high position, and deliver the air to the upstream of the heat exchanger 60. After heat exchange and temperature adjustment, the air is blown out through the air outlet 41 under the action of the air outlet fan 43. In this way, when the air conditioner is in cooling mode, the air at a relatively high temperature can be cooled by heat exchange, thereby improving the indoor temperature stratification and preventing the head from being hot and the feet from being cold, and achieving the effect of improving the user experience.

[0067] The third air inlet 51 can be located at the lower side of the second air inlet 31, for example, at the bottom of the first side wall 11 close to the shell 10. The second air inlet fan 53 can suck air from the third air inlet 51 at a relatively low position, and deliver the air to the upstream of the heat exchanger 60. After heat exchange and temperature adjustment, the air is blown out through the air outlet 41 under the action of the air outlet fan 43. In this way, when the air conditioner is in heating mode, the air at a relatively low temperature can be heated by heat exchange, thereby improving the indoor temperature stratification and preventing the head from being hot and the feet from being cold, and achieving the effect of improving the user experience.

[0068] In some embodiments of the air conditioner of the present application, as shown in Figures 2-3 The third air inlet 51 is located at the upper side of the second air inlet 31. The second air inlet fan 53 is a centrifugal fan.

[0069] The inlet side 531 of the second air inlet fan is upwardly open, and the outlet end 54 of the third air inlet duct is downwardly open.

[0070] In this embodiment, the third air inlet 51 is located at the upper side of the second air inlet 31, and the air inlet position is relatively high. When the air conditioner is in cooling mode, the air at a relatively high temperature can be cooled by heat exchange, thereby improving the indoor temperature stratification and preventing the head from being hot and the feet from being cold, and achieving the effect of improving the user experience.

[0071] The centrifugal fan has a small volume, which can reduce the overall volume of the air conditioner. The inlet side of the centrifugal fan is upwardly open, and the outlet side of the centrifugal fan can be provided with a guide pipe 55 which is downwardly open. In this way, the centrifugal fan can suck air from the third air inlet 51 downwardly into the fan, and discharge the air downwardly along the volute and the guide pipe 55 to the upstream of the first heat exchange section 61, and then to the air outlet fan 43. The air flow path of the third air inlet duct 52 is relatively short, which can reduce air flow resistance and air loss as much as possible.

[0072] In some embodiments of the air conditioner of the present application, as shown in Figure 3 and Figure 5 The air conditioner further comprises a first motor 46, and the first motor 46 is located at the upper side of the air outlet fan 43. The first motor 46 is drivingly connected to the air outlet fan 43, and the first motor 46 is drivingly connected to the second air inlet fan 53.

[0073] In the embodiment, the first motor 46 is located at the upper side of the air outlet fan 43, so that the condensed water of the air outlet fan 43 cannot enter the first motor 46. The first motor 46 can be connected to the air outlet fan 43 and the second air inlet fan 53 through a transmission mechanism, such as a belt transmission mechanism, a chain transmission mechanism, a gear transmission mechanism, etc. The air outlet fan 43 and the second air inlet fan 53 share one motor, so that the manufacturing cost of the air conditioner can be reduced.

[0074] In some embodiments of the air conditioner of the present application, as shown in Figure 3 and Figure 5 the first motor 46 is a double-shaft motor, one end of the first motor 46 is coaxially fixedly connected to the air outlet fan 43, and the other end of the first motor 46 is coaxially fixedly connected to the second air inlet fan 53.

[0075] In the embodiment, the output shaft at the lower end of the first motor 46 is coaxially fixedly connected to the rotating shaft at the upper end of the air outlet fan 43, and the output shaft at the upper end of the first motor 46 is coaxially fixedly connected to the rotating shaft at the lower end of the second air inlet fan 53. On the one hand, the transmission efficiency of this transmission connection mode is high. On the other hand, the rotation speed of the second air inlet fan 53 is always proportional to the rotation speed of the air outlet fan 43, so that the ratio of the air inlet flow rate of the third air inlet air duct 52 to the air outlet flow rate of the air outlet air duct 42 remains stable, and the energy waste caused by the flow rate mismatch of the two fans is prevented.

[0076] In some embodiments of the air conditioner of the present application, as shown in Figure 3 the distance L1 between the outlet end 54 of the third air inlet air duct and the upper end of the heat exchanger 60 is less than 1 / 4 of the height L2 of the heat exchanger 60.

[0077] Generally, the upper end of the second air inlet 31 is flush with or slightly different from the upper end of the heat exchanger 60. When the third air inlet air duct 52 is not arranged, due to the shielding of the upper end of the second air inlet 31, the air inlet flow rate of the area close to the upper end of the heat exchanger 60 is usually less than that of the middle area of the heat exchanger 60. During refrigeration or heating, the air flow passing through the area close to the upper end of the heat exchanger 60 is relatively small, which causes the heat exchange capacity of the area close to the upper end of the heat exchanger 60 to be wasted.

[0078] In the embodiment, by arranging L1 to be less than L2 / 4, the air flow flowing out of the outlet end 54 of the third air inlet air duct can pass through the area close to the upper end of the heat exchanger 60. That is, the heat exchange capacity of the area close to the upper end of the heat exchanger 60 can be fully utilized, the refrigeration and heating capacity of the air conditioner is improved, and the energy efficiency of the air conditioner is improved.

[0079] In some embodiments of the air conditioner of the present application, as shown in Figure 3As shown, the upper end of the first inlet air impeller 23 is lower than the upper end of the heat exchanger 60, and the lower end of the first inlet air impeller 23 is higher than the lower end of the heat exchanger 60. In this way, excessive inlet air flow can be avoided from being blocked and stagnated at the upper and lower ends of the heat exchanger 60, thereby affecting the inlet air flow.

[0080] In some embodiments of the air conditioner of the present application, as shown in Figure 4 As shown, the distance L3 between the axis of the first inlet air impeller 23 and the first side wall 11 is less than the distance L4 between the axis of the outlet air impeller 43 and the first side wall 11. The axis of the first inlet air impeller 23 and the axis of the outlet air impeller 43 are on the first plane 70, and the angle A between the first plane 70 and the first side wall 11 is 5-30 degrees.

[0081] The first inlet air duct 22 includes a diffuser duct 221 formed at the outlet side of the first inlet air impeller 23. The diffuser duct 221 is on the side of the first plane 70 away from the first side wall 11. The outlet end 54 of the third inlet air duct is between the diffuser duct 221 and the first heat exchange section 61.

[0082] In this embodiment, the length of the inlet side of the first inlet air duct 22 (the section between the first inlet air port 21 and the first inlet air impeller 23) is less than the length of the outlet side of the outlet air duct 42 (the section between the outlet air impeller 43 and the outlet air port 41). On the one hand, the flow rate of the outlet air duct 42 is the sum of the flow rates of the first inlet air duct 22, the second inlet air duct 32, and the third inlet air duct 52, i.e., the flow rate of the first inlet air duct 22 is less than that of the outlet air duct 42. Therefore, the first inlet air duct 22 does not need a long air duct to guide the inlet air flow. On the other hand, the air flow blown by the outlet air impeller 43 has a high speed and a large dynamic pressure, and a long distance of the air duct is needed to expand the pressure to convert the dynamic pressure into static pressure before being blown out from the outlet air port 41.

[0083] The axes of the first inlet air impeller 23 and the outlet air impeller 43 are on the first plane 70, and the first inlet air port 21, the first inlet air impeller 23, the outlet air impeller 43, and the outlet air port 41 are approximately at the four corners of a quadrilateral. By reasonably setting the angle A between the first plane 70 and the first side wall 11, the air flow turning angles of the two through-flow impellers at the first inlet air impeller 23 and the outlet air impeller 43 can be reasonably distributed, thereby reducing the air loss during turning.

[0084] When the angle A between the first plane 70 and the first side wall 11 is too large, the air flow in the air outlet air duct 42 will bear too much task of air flow diversion, and the air flow diversion capability of the first air inlet air wheel 23 will be idle. When the angle A between the first plane 70 and the first side wall 11 is too small, the distance of the first air inlet air duct 22 will be undesirably lengthened, and the air flow in the first air inlet air duct 22 will be subjected to more resistance. Alternatively, when the angle A between the first plane 70 and the first side wall 11 is too small, the distance of the air outlet air duct 42 will be undesirably shortened, and the pressure expansion will be insufficient. The angle A between the first plane 70 and the first side wall 11 is preferably 5-30 degrees after comprehensively considering the above factors.

[0085] In the embodiment, the pressure expansion air duct 221 is used to expand the air flow on the air outlet side of the first air inlet air wheel 23, convert the dynamic pressure of the air flow into static pressure, improve the static pressure of the region of the heat exchanger 60 far from the air outlet air duct 42, improve the pressure difference between the two sides of the heat exchanger 60, and promote the air flow to quickly enter the air outlet air wheel 43.

[0086] The pressure expansion air duct 221 is located at the rear side of the first plane 70, so that the air flow in the pressure expansion air duct 221 mainly enters the air outlet air wheel 43 through the first heat exchange section 61 and the first inlet 44, prevents the air flow in the pressure expansion air duct 221 from interfering or colliding with the air flow in the second air inlet air duct 32, and avoids wind loss.

[0087] In the embodiment, the outlet end 54 of the third air inlet air duct is arranged between the pressure expansion air duct 221 and the first heat exchange section 61, so that the air pressure of the upstream region of the first heat exchange section 61 can be further improved, the pressure difference between the upstream and downstream of the first heat exchange section 61 can be increased, and the air flow can be promoted to quickly enter the air outlet air wheel 43, thereby improving the air inlet flow and the air outlet flow of the air outlet air wheel 43. One reason for not arranging the outlet end 54 of the third air inlet air duct in the second air inlet air duct 32 is that the second air inlet air duct 32 is a passive air inlet air duct, and only relies on the suction of the air outlet air wheel 43 to inhale air. If the outlet end 54 of the third air inlet air duct is arranged in the second air inlet air duct 32, the negative pressure at the second air inlet 31 can be reduced, and the air inlet flow of the second air inlet 31 can be affected.

[0088] In some embodiments of the air conditioner of the present application, as shown in FIG. 2, the outlet side of the first air inlet air wheel 23 is provided with a volute side wall 222 and a volute tongue side wall 223. The pressure expansion air duct 221 is formed between the volute side wall 222 and the volute tongue side wall 223. Figure 4

[0089] The volute tongue side wall 223 is located at the side of the volute side wall 222 close to the first side wall 11. The angle B between the volute tongue side wall 223 and the first plane 70 is 0-15 degrees.

[0090] ​In this embodiment, the volute tongue side wall 223 is connected to the end of the volute tongue, and is used to guide the airflow on the outlet side of the first inlet air impeller 23. The volute tongue side wall 223 can be linear or arc-shaped. When the volute tongue side wall 223 is arc-shaped, the angle between the volute tongue side wall 223 and the first plane 70 is the angle formed between the extension line of the end of the volute tongue side wall 223 and the first plane 70.

[0091] Due to the aerodynamic characteristics of the cross-flow impeller, the airflow in the diffuser air duct 221 has a strong dynamic pressure. By limiting the angle B between the volute tongue side wall 223 and the first plane 70 to be greater than or equal to 0 degrees, the airflow in the diffuser air duct 221 can be prevented from entering the second inlet air duct 32 forwardly after passing through the volute tongue side wall 223, interfering or colliding with the airflow in the second inlet air duct 32, and wind loss can be avoided. By limiting the angle B between the volute tongue side wall 223 and the first plane 70 to be less than or equal to 15 degrees, on the one hand, the airflow in the diffuser air duct 221 can be limited to avoid excessive deviation from the first inlet 44 of the outlet air impeller 43, causing unnecessary wind loss. The airflow out of the diffuser air duct 221 can be smoothly and quickly guided to enter the outlet air impeller 43 through the first heat exchange section 61.

[0092] On the other hand, the diffuser air duct 221 is arranged at the rear side of the second inlet air duct 32, and under the action of the first inlet air impeller 23, the speed of the airflow in the first inlet air duct 22 is greater than that of the airflow at the rear end of the second inlet air duct 32. The airflow at the rear end of the second inlet air duct 32 can be sucked into the first inlet air duct 22, and then enter the outlet air impeller 43 through the first heat exchange section 61. In this way, the total inlet air flow of the second inlet air duct 32 can be increased, thereby increasing the total outlet air flow of the outlet air duct 42.

[0093] In some embodiments of the air conditioner of the present application, as shown in Figure 4 the angle C between the first heat exchange section 61 and the volute tongue side wall 223 is 110-170 degrees.

[0094] Although the diffuser air duct 221 is expanded, the dynamic pressure of the airflow flowing out of the diffuser air duct 221 is still relatively large, and a large energy loss will be caused when the airflow collides with the front face of the first heat exchange section 61. By setting the angle C between the first heat exchange section 61 and the volute tongue side wall 223, the flow direction of the airflow flowing out of the diffuser air duct 221 forms an acute angle with the inlet face of the first heat exchange section 61, which promotes the airflow to enter the outlet air impeller 43 under the action of the pressure difference. On the other hand, the angle also makes the outlet face of the first heat exchange section 61 face the outlet air impeller 43, and the first heat exchange section 61 can also straighten the airflow passing through, thereby reducing the turbulence of the airflow when entering the outlet air impeller 43.

[0095] In some embodiments of the air conditioner of the present application, as shown in Figure 4 the angle D between the second heat exchange section 62 and the first side wall 11 is 55-85 degrees.

[0096] The air outlet fan 43 is located behind the second heat exchange section 62 (in the middle right rear), and by setting the angle C between the second heat exchange section 62 and the first side wall 11, the flow direction of the air flow in the second air inlet duct 32 forms an acute angle with the air inlet face of the second heat exchange section 62, which promotes the air flow to enter the air outlet fan 43 under the action of the pressure difference. On the other hand, this angle also makes the air outlet face of the second heat exchange section 62 face the air outlet fan 43, and the second heat exchange section 62 can also straighten the air flow passing through, thereby reducing the turbulence of the air flow when entering the air outlet fan 43. Figure 4

[0097] At this point, those skilled in the art should recognize that although the present application has been fully illustrated and described herein with reference to a number of exemplary embodiments, many other variations or modifications in accordance with the principles of the present application can be directly determined or deduced from the disclosure of the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all such other variations or modifications.​

Claims

1. A cabinet type air conditioner, characterized by comprising: The air conditioner comprises: a cabinet, a first side wall of the cabinet is provided with a first air inlet, a second air inlet and an air outlet in sequence along the transverse direction; the second air inlet is between the first air inlet and the air outlet; an air outlet air duct, an outlet of the air outlet air duct is connected to the air outlet; an air outlet fan is arranged in the air outlet air duct; an inlet side of the air outlet fan comprises a first inlet and a second inlet, and the second inlet is on a side of the first inlet close to the first side wall; a first air inlet air duct is formed between the first air inlet and the first inlet, and a first air inlet fan is arranged in the first air inlet air duct; a second air inlet air duct is formed between the second air inlet and the second inlet; wherein the air outlet fan is drivingly connected to a first motor, and the first air inlet fan is drivingly connected to a second motor.

2. The air conditioner according to claim 1, wherein: the air outlet fan and the first air inlet fan are both cross-flow fans and are arranged along the vertical direction; the air conditioner further comprises a heat exchanger arranged along the vertical direction, the heat exchanger comprises a first heat exchange section and a second heat exchange section fixedly connected; the first heat exchange section is in the first air inlet air duct, and the second heat exchange section is in the second air inlet air duct.

3. The air conditioner according to claim 2, wherein: a third air inlet is further arranged on the first side wall of the cabinet, and the third air inlet is on the upper side or the lower side of the second air inlet; an inner side of the third air inlet is connected to a third air inlet air duct, an outlet end of the third air inlet air duct is in the first air inlet air duct and between the first air inlet fan and the first heat exchange section; a second air inlet fan is arranged in the third air inlet air duct.

4. The air conditioner according to claim 3, wherein: the third air inlet is on the upper side of the second air inlet; the second air inlet fan is a centrifugal fan; an inlet side of the second air inlet fan is upwardly open, and the outlet end of the third air inlet air duct is downwardly open.

5. The air conditioner of claim 4, wherein the first motor is on the upper side of the air outlet fan; and the first motor is drivingly connected to the second air inlet fan.

6. The air conditioner of claim 5, wherein the first motor is a double-shaft motor, one end of the first motor is coaxially fixedly connected to the air outlet fan, and the other end of the first motor is coaxially fixedly connected to the second air inlet fan.

7. The air conditioner according to claim 4, wherein: a distance between the outlet end of the third air inlet air duct and an upper end of the heat exchanger is less than 1 / 4 of the height of the heat exchanger; and / or an upper end of the first air inlet fan is lower than the upper end of the heat exchanger, and a lower end of the first air inlet fan is higher than the lower end of the heat exchanger.

8. The air conditioner according to claim 3, wherein: a distance between the axis of the first air inlet fan and the first side wall is less than a distance between the axis of the air outlet fan and the first side wall; the axis of the first air inlet fan and the axis of the air outlet fan are on a first plane, and an included angle between the first plane and the first side wall is 5-30 degrees. The first air inlet air duct comprises a diffuser air duct formed at the outlet side of the first air inlet air wheel; the diffuser air duct is located on the side of the first plane away from the first side wall; and the outlet end of the third air inlet air duct is located between the diffuser air duct and the first heat exchange section.

9. The air conditioner of claim 8, wherein, The outlet side of the first air inlet air wheel is provided with a volute side wall and a volute tongue side wall; and the diffuser air duct is formed between the volute side wall and the volute tongue side wall. The volute tongue side wall is located on the side of the volute side wall close to the first side wall; and the angle between the volute tongue side wall and the first plane is 0-15 degrees.

10. The air conditioner of claim 9, wherein, The angle between the first heat exchange section and the volute tongue side wall is 110-170 degrees; and / or The angle between the second heat exchange section and the first side wall is 55-85 degrees.

Images