Vertical cabinet type air conditioner

Abstract

The utility model provides a vertical cabinet type air conditioner. The air conditioner comprises a shell, a first air duct, a heat exchanger, a second air duct and a third air duct. A first air inlet and a first air outlet which are formed in the first side wall are formed in the two ends of the first air channel. A first wind wheel is arranged in the first air duct to divide the first air duct into a first air inlet section and a first air outlet section. Two ends of the second air duct are provided with a second air inlet and a second air outlet. The second air inlet is formed in the first side wall and located on the upper side of the first air inlet. The second air outlet is located in the first air inlet section and located in the side, away from the first wind wheel, of the heat exchanger. A second wind wheel is arranged in the second air duct. A third air inlet and a third air outlet are formed in two ends of the third air duct. The third air inlet is formed in the first side wall and located on the lower side of the first air inlet. The third air outlet is located in the first air inlet section and located in the side, away from the first wind wheel, of the heat exchanger. And a first fan is arranged in the third air duct. The air conditioner can improve the air outlet flow and the air supply distance.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, and particularly to a floor-standing 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 further result in 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 of small air supply volume and short air supply distance of the existing air conditioner, which affect the user experience.

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

[0005] A floor-standing air conditioner includes a casing, a first air duct, a heat exchanger, a second air duct, and a third air duct.

[0006] The first air duct is formed inside the casing, and a first air inlet and a first air outlet are provided at both ends of the first air duct. The first air inlet and the first air outlet are both opened on the first side wall of the casing. A first air wheel is arranged inside the first air duct, and the first air wheel divides the first air duct into a first air inlet section upstream of the first air wheel and a first air outlet section downstream of the first air wheel.

[0007] The heat exchanger is vertically arranged inside the first air inlet section.

[0008] The second air duct is formed inside the casing, and a second air inlet and a second air outlet are provided at both ends of the second air duct. The second air inlet is opened on the first side wall and is above the first air inlet. The second air outlet is inside the first air inlet section and is on the side of the heat exchanger away from the first air wheel. A second air wheel is arranged inside the second air duct.

[0009] The third air duct is formed inside the casing, and a third air inlet and a third air outlet are provided at both ends of the third air duct. The third air inlet is opened on the first side wall and is below the first air inlet. The third air outlet is inside the first air inlet section and is on the side of the heat exchanger away from the first air wheel. A first blower is arranged inside the third air duct.

[0010] Optionally, the first wind wheel is a cross-flow wind wheel, and the axis of the first wind wheel extends vertically. The upper end of the first wind wheel is coaxially and drivably connected to a first motor. The first air blower is a centrifugal air blower.

[0011] The second wind wheel is a centrifugal wind wheel, and the second wind wheel is coaxially and drivably connected to a second motor.

[0012] Optionally, the second wind wheel is a centrifugal wind wheel, and the axis of the second wind wheel is parallel to the axis of the first wind wheel. The first motor is also drivably connected to the second wind wheel through a transmission mechanism.

[0013] Optionally, in the projection of the cross-section of the first wind wheel, the minimum distance between the second air outlet and the axis of the first wind wheel is greater than the minimum distance between the first air inlet and the axis of the first wind wheel, and the minimum distance between the third air outlet and the axis of the first wind wheel is greater than the minimum distance between the first air inlet and the axis of the first wind wheel.

[0014] Optionally, the second air inlet is arranged at intervals above the first air inlet.

[0015] The second wind wheel is located above the heat exchanger. The second air outlet is located below the upper end of the heat exchanger.

[0016] The third air inlet is arranged at intervals below the first air inlet.

[0017] The first air blower is located below the heat exchanger. The third air outlet is located above the lower end of the heat exchanger.

[0018] Optionally, the inlet side of the second wind wheel opens upward. The second air outlet opens downward. The distance between the second air outlet and the upper end of the heat exchanger is less than 1 / 4 of the height of the heat exchanger.

[0019] The inlet side of the first air blower opens downward. The third air outlet opens opposite to the second air outlet. The distance between the third air outlet and the lower end of the heat exchanger is less than 1 / 4 of the height of the heat exchanger.

[0020] Optionally, the minimum distance between the second air outlet and the heat exchanger is greater than or equal to 40 mm.

[0021] The minimum distance between the third air outlet and the heat exchanger is greater than or equal to 40 mm.

[0022] Optionally, the heat exchanger includes a first heat exchange section and a second heat exchange section that form an angle with each other. The distance from the end of the second heat exchange section away from the first air inlet to the first air inlet is greater than the distance from the end of the first heat exchange section away from the first air inlet to the first air inlet.

[0023] The distance from the first heat exchange section to the axis of the first wind wheel is less than the distance from the second heat exchange section to the axis of the first wind wheel.

[0024] In the projection of the cross-section of the first wind wheel, the first heat exchange section is between the first wind wheel and the first air inlet, and both the second air outlet and the third air outlet are on the side of the second heat exchange section away from the first wind wheel.

[0025] Optionally, the heat exchanger includes a first heat exchange section and a second heat exchange section that form an angle with each other. The distance from the end of the second heat exchange section away from the first air inlet to the first air inlet is greater than the distance from the end of the first heat exchange section away from the first air inlet to the first air inlet.

[0026] In the projection of the cross-section of the first wind wheel, the angle between the first heat exchange section and the first air inlet is 0 to 15 degrees, and the angle between the second heat exchange section and the first air inlet is 75 to 90 degrees. And the first heat exchange section is between the first wind wheel and the first air inlet, and both the second air outlet and the third air outlet are on the side of the second heat exchange section away from the first wind wheel.

[0027] Optionally, the heat exchanger includes a first heat exchange section and a second heat exchange section that form an angle with each other. The distance from the end of the second heat exchange section away from the first air inlet to the first air inlet is greater than the distance from the end of the first heat exchange section away from the first air inlet to the first air inlet.

[0028] In the projection of the cross-section of the first wind wheel, the minimum distance from the second air outlet to the first air inlet is greater than the distance from the end of the first heat exchange section away from the first air inlet to the first air inlet. And the minimum distance from the third air outlet to the first air inlet is greater than the distance from the end of the first heat exchange section away from the first air inlet to the first air inlet.

[0029] Optionally, the first side wall is the front panel.

[0030] The height of the first air inlet is greater than the width. The height of the first air outlet is greater than the width. The width of the first air outlet is less than the width of the first air inlet.

[0031] The floor-standing air conditioner of the present utility model can intake air from the upper and lower sides of the first air inlet by setting a second air duct, a second air wheel, a third air duct and a first fan, increasing the air intake flow rate of the air conditioner and supplementing air intake for the air conditioner. It can make up for the air volume loss caused by the too large change in the air path direction when the air inlet and the air outlet are on the same side of the air conditioner, achieving the effect of improving the air outlet flow rate and the air supply distance of the air conditioner.

[0032] On the other hand, the air conditioner of the present utility model has a second air inlet arranged on the upper side of the first air inlet. The second air wheel arranged in the second air duct can suck the air at a relatively higher position from the second air inlet and transport it to the upstream of the heat exchanger. After heat exchange and temperature adjustment, it is blown out through the first air outlet under the action of the first air wheel. When the air conditioner is refrigerating, the air with a relatively higher temperature can be sucked into the air conditioner for heat exchange and cooling. By arranging a third air inlet on the lower side of the first air inlet, the first fan arranged in the third air duct can suck the air at the bottom from the third air inlet and transport it to the upstream of the heat exchanger. After heat exchange and temperature adjustment, it is blown out through the first air outlet under the action of the first air wheel. When the air conditioner is heating, the air with a relatively lower temperature can be sucked into the air conditioner for heat exchange and temperature increase. The air conditioner of the present utility model can improve the indoor temperature stratification situation, achieving the effect of improving the user experience.

[0033] Through the following detailed description of the specific embodiments of the present utility model in conjunction with the accompanying drawings, those skilled in the art will become more clear about the above and other purposes, advantages and features of the present utility model. Description of the Drawings

[0034] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive 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:

[0035] Figure 1 is a schematic front view of a floor-standing air conditioner according to an embodiment of the present utility model;

[0036] Figure 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present utility model;

[0037] Figure 3 is Figure 1 a schematic cross-sectional view along the A axis in ;

[0038] Figure 4 is Figure 1 a schematic cross-sectional view along the B axis in ;

[0039] Figure 5is a schematic cross-sectional view of an air conditioner according to an embodiment of the present utility model, taken along a plane passing through the axes of the first and second impellers;

[0040] Figure 6 is a schematic cross-sectional view of an air conditioner according to an embodiment of the present utility model, taken along a plane passing through the axes of the first and second impellers;

[0041] Figure 7 is a schematic structural diagram of a first impeller, a second impeller, a first motor, a transmission mechanism, and a first blower of an air conditioner according to an embodiment of the present utility model.

[0042] List of reference numerals:

[0043] 10. Cabinet; 11. First side wall; 21. First air duct; 211. First air inlet section; 212. First air outlet section; 22. First air inlet; 23. First air outlet; 24. First impeller; 25. First motor; 26. Transmission mechanism; 30. Heat exchanger; 41. Second air duct; 42. Second air inlet; 43. Second air outlet; 44. Second impeller; 45. Second motor; 441. Inlet side of the second impeller; 31. First heat exchange section; 32. Second heat exchange section; 61. Third air duct; 62. Third air inlet; 63. Third air outlet; 64. First blower; 641. Inlet side of the first blower; 642. Third impeller; 643. Third motor. Detailed implementation manners

[0044] The following refers to Figures 1 to 7 to describe the floor-standing air conditioner according to the embodiment of the present utility model. 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, the 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" is at least two, such as two, three, etc., unless otherwise specifically 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.

[0045] Unless otherwise clearly defined and limited, terms such as "arranged", "installed", "connected", "joined", "fixed", "coupled", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. 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.

[0046] 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 additional features therebetween. That is, in the description of this embodiment, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", or "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0047] In the description of this embodiment, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. 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 utility model. In this specification, the schematic descriptions 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.

[0048] Figure 1 is a schematic front view of a floor-standing air conditioner according to an embodiment of the present utility model, as Figure 1 shown, and referring to Figures 2 - 7 . The embodiment of the present utility model provides a floor-standing air conditioner, including a housing 10, a first air duct 21, a heat exchanger 30, a second air duct 41, and a third air duct 61.

[0049] The first air duct 21 is formed inside the housing 10. Both ends of the first air duct 21 are provided with a first air inlet 22 and a first air outlet 23. Both the first air inlet 22 and the first air outlet 23 are opened on the first side wall 11 of the housing 10. A first air wheel 24 is arranged inside the first air duct 21. The first air wheel 24 divides the first air duct 21 into a first air inlet section 211 upstream of the first air wheel 24 and a first air outlet section 212 downstream of the first air wheel 24.

[0050] The heat exchanger 30 is vertically arranged in the first air inlet section 211.

[0051] The second air duct 41 is formed in the housing 10. The two ends of the second air duct 41 are provided with a second air inlet 42 and a second air outlet 43. The second air inlet 42 is opened on the first side wall 11 and is located above the first air inlet 22. The second air outlet 43 is located in the first air inlet section 211 and is on the side of the heat exchanger 30 away from the first air wheel 24. A second air wheel 44 is arranged in the second air duct 41.

[0052] The third air duct 61 is formed in the housing 10. The two ends of the third air duct 61 are provided with a third air inlet 62 and a third air outlet 63. The third air inlet 62 is opened on the first side wall 11 and is located below the first air inlet 22. The third air outlet 63 is located in the first air inlet section 211 and is on the side of the heat exchanger 30 away from the first air wheel 24. A first fan 64 is arranged in the third air duct 61.

[0053] In this embodiment, the first air wheel 24 can be a cross-flow air wheel, a centrifugal air wheel, an axial-flow air wheel, etc., and is used to suck the air in the first air inlet section 211 into the first air wheel 24 and blow it to the first air outlet section 212 and then blow it out through the first air outlet 23. The second air wheel 44 can be a cross-flow air wheel, a centrifugal air wheel, an axial-flow air wheel, etc., and is used to suck the air at the second air inlet 42 into the second air duct 41 and blow it to the second air outlet 43. The first fan 64 can be a cross-flow fan, a centrifugal fan, an axial-flow fan, etc., and is used to suck the air at the third air inlet 62 into the third air duct 61 and blow it to the third air outlet 63.

[0054] There are three main sources of the air flow in the first air inlet section 211: a part of the air enters the first air inlet section 211 through the first air inlet 22 under the suction of the first air wheel 24. Another part of the air enters the second air duct 41 through the second air inlet 42 under the suction of the second air wheel 44, and then flows out of the second air outlet 43 and enters the first air inlet section 211 under the combined action of the blowing force of the second air wheel 44 and the suction of the first air wheel 24. Still another part of the air enters the third air duct 61 through the third air inlet 62 under the suction of the first fan 64, and then flows out of the third air outlet 63 and enters the first air inlet section 211 under the combined action of the blowing force of the first fan 64 and the suction of the first air wheel 24.

[0055] The first air inlet 22 and the first air outlet 23 can be horizontally spaced and arranged on the first side wall 11. The first side wall 11 can be the front side wall, the left side wall or the right side wall of the air conditioner. For example, the first side wall 11 can be the front side wall, the first air inlet 22 is arranged on the left side of the first side wall 11, and the first air outlet 23 is arranged on the right side of the first side wall 11.

[0056] The heat exchanger 30 is vertically arranged in the first air inlet section 211 and is used for adjusting the temperature, humidity, etc. of the passing air flow.

[0057] When the air inlet and outlet of the air conditioner are on the same side of the cabinet 10, the air inlet direction and the air outlet direction form an approximate angle, and the air flow direction changes greatly. When the air flow changes direction, a large amount of air volume loss will occur, which will lead to a smaller air outlet volume and a shorter air supply distance of the air conditioner, making it difficult to meet the user's needs.

[0058] For the air conditioner of the present utility model, by arranging the second air duct 41, the second air wheel 44, the third air duct 61 and the first fan 64, air can be introduced from the upper and lower sides of the first air inlet 22, increasing the air inlet flow of the air conditioner and making up the air for the air conditioner, which can make up for the air volume loss caused by the too large change in the air flow direction when the air inlet and outlet are on the same side of the air conditioner, achieving the effect of increasing the air outlet flow and the air supply distance of the air conditioner.

[0059] On the other hand, the second air inlet 42 is located above the first air inlet 22, and the air at a relatively higher position can be sucked in from the second air inlet 42, transported to the upstream of the heat exchanger 30, and blown out through the first air outlet 23 under the action of the first air wheel 24 after heat exchange and temperature adjustment. In actual use, when the air conditioner is refrigerating, the second air wheel 44 can suck the air with a relatively higher temperature into the air conditioner and perform heat exchange and cooling. The third air inlet 62 is located below the first air inlet 22, and the air at a relatively lower position can be sucked in from the third air inlet 62, transported to the upstream of the heat exchanger 30, and blown out through the first air outlet 23 under the action of the first air wheel 24 after heat exchange and temperature adjustment. In actual use, when the air conditioner is heating, the first fan 64 can suck the air with a relatively lower temperature into the air conditioner and perform heat exchange and cooling, thereby improving the indoor temperature stratification situation and achieving the effect of improving the user experience.

[0060] In some embodiments of the air conditioner of the utility model, as Figure 6 shown, the first air wheel 24 is a cross-flow air wheel, and the axis of the first air wheel 24 extends vertically. The upper end of the first air wheel 24 is coaxially driven and connected to a first motor 25. The first fan 64 is a centrifugal fan.

[0061] The second air wheel 44 is a centrifugal air wheel, and the second air wheel 44 is coaxially driven and connected to a second motor 45.

[0062] The cross-flow air wheel can generate a large amount of air volume and has a uniform air outlet, which is suitable for the situation where the floor-standing air conditioner has a large demand for air volume.

[0063] In this embodiment, the output shaft of the first motor 25 can be coaxially and fixedly connected to the rotating shaft at the upper end of the first wind wheel 24. On the one hand, this transmission connection method has a high transmission efficiency. On the other hand, it can prevent the condensate water on the first wind wheel 24 from entering the first motor 25. The second motor 45 can be coaxially and fixedly connected to the second wind wheel 44 to drive the second wind wheel 44 to rotate. The first blower 64 is a centrifugal blower and can include a third wind wheel 642 and a third motor 643.

[0064] In this embodiment, the first wind wheel 24 and the second wind wheel 44 are each connected to an independent motor and can independently adjust their respective rotational speeds, thereby changing the ratio of the airflows of the two wind wheels. The first wind wheel 24 and the first blower 64 are each connected to an independent motor and can independently adjust their respective rotational speeds, thereby changing the ratio of the airflows of the two wind wheels. Under different working conditions, the second wind wheel 44 and the first blower 64 are made to cooperate with the first wind wheel 24 as much as possible to provide the maximum air volume and the maximum air supply distance for the air conditioner.

[0065] The second wind wheel 44 can be a centrifugal wind wheel, such as Figure 6 shown. The centrifugal wind wheel has a small volume and can be arranged offset from the first motor 25 to reduce the overall volume of the air conditioner. The second motor 45 can be integrally arranged inside the volute of the centrifugal wind wheel. The inlet side of the centrifugal wind wheel can face the position of the second air inlet 42, and a duct can be arranged on the outlet side of the centrifugal wind wheel to guide the air flow to the first air inlet section 211.

[0066] The first blower 64 can be a centrifugal blower, such as Figure 6 shown. The centrifugal blower has a small volume and can reduce the overall volume of the air conditioner. The third motor 643 can be integrally arranged inside the volute of the centrifugal wind wheel. The inlet side 641 of the first blower can face the position of the third air inlet 62, and a duct can be arranged on the outlet side of the first blower 64 to guide the air flow to the first air inlet section 211.

[0067] In some embodiments of the air conditioner of the utility model, such as Figure 5 shown, the second wind wheel 44 is a centrifugal wind wheel, and the axis of the second wind wheel 44 is parallel to the axis of the first wind wheel 24. The first motor 25 is also connected to the second wind wheel 44 through a transmission mechanism 26.

[0068] In this embodiment, the transmission mechanism 26 can be a belt transmission mechanism, a chain transmission mechanism, a gear transmission mechanism, etc. Figure 5 The technical solution of the belt transmission mechanism is illustrated. In this solution, the first motor 25 is a double-shaft motor. The lower output shaft is coaxially and fixedly connected to the rotating shaft at the upper end of the first wind wheel 24, and the upper output shaft is coaxially and fixedly connected to a pulley. A pulley is coaxially and fixedly connected to the upper end of the second wind wheel 44, and the two pulleys are connected by a transmission belt.

[0069] By arranging a transmission mechanism 26 between the first motor 25 and the second wind wheel 44, on the one hand, a single motor can be shared, reducing production costs. On the other hand, it can ensure that the rotation speed of the second wind wheel 44 is always proportional to that of the first wind wheel 24, preventing energy consumption waste caused by mismatched flow rates between the two wind wheels.

[0070] In some embodiments of the utility model air conditioner, such as Figures 3 - 4 As shown, on the projection of the cross-section of the first wind wheel 24, the minimum distance L1 from the second air outlet 43 to the axis of the first wind wheel 24 is greater than the minimum distance L2 from the first air inlet 22 to the axis of the first wind wheel 24, and the minimum distance L11 from the third air outlet 63 to the axis of the first wind wheel 24 is greater than the minimum distance L2 from the first air inlet 22 to the axis of the first wind wheel 24.

[0071] In this embodiment, the second air outlet 43 and the third air outlet 63 are farther from the first wind wheel 24 than the first air inlet 22, that is, the second air outlet 43 and the third air outlet 63 are in a low negative pressure area. In the low negative pressure area, the air flow is less affected by the suction of the first wind wheel 24 and has a slower flow rate, so it is also called an inefficient wind area. By arranging the second air outlet 43 and the third air outlet 63 in the inefficient wind area, the air flow in the second air duct 41 is injected into the inefficient wind area under the blowing force of the second wind wheel 44, and the air flow in the third air duct 61 is injected into the inefficient wind area under the blowing force of the first fan 64, which can increase the air pressure in the inefficient wind area and prompt the air flow in the inefficient wind area to flow quickly towards the first wind wheel 24. That is to say, the flow rate in the inefficient wind area can be increased, thereby increasing the suction flow rate of the first wind wheel 24 and further increasing the air outlet flow rate.

[0072] In some embodiments of the utility model air conditioner, such as Figure 2 As shown, the second air inlet 42 is arranged at intervals above the first air inlet 22.

[0073] The second wind wheel 44 is located above the heat exchanger 30. The second air outlet 43 is located below the upper end of the heat exchanger 30.

[0074] The third air inlet 62 is arranged at intervals below the first air inlet 22.

[0075] The first fan 64 is located below the heat exchanger 30. The third air outlet 63 is located above the lower end of the heat exchanger 30.

[0076] The second air inlet 42 and the first air inlet 22 can be arranged adjacent to each other or at intervals. When arranged at intervals, it can prevent the second air inlet 42 from sucking the air flow near the first air inlet 22 and affecting the air inlet flow rate of the first air inlet 22.

[0077] The second wind wheel 44 is located above the heat exchanger 30. On the one hand, it can make full use of the idle space above the heat exchanger 30. On the other hand, the heat exchanger 30 can be used as a fixed support to install the second wind wheel 44 on the heat exchanger 30, saving manufacturing costs.

[0078] The second air outlet 43 is located below the upper end of the heat exchanger 30, and can send the air flow flowing in from the second air inlet 42 and the second air duct 41 to the first air inlet section 211, and then directly flow into the heat exchanger 30 for heat exchange and temperature adjustment. When the air conditioner is cooling, the air flow in the second air duct 41 may be relatively high-temperature air flow. If the second air outlet 43 is located above the upper end of the heat exchanger 30, the relatively high-temperature air flow may stay above the heat exchanger 30, weakening the influence on increasing the air flow in the low-efficiency air area.

[0079] The third air inlet 62 and the first air inlet 22 can be arranged adjacent to each other or at intervals. When arranged at intervals, it can prevent the third air inlet 62 from sucking in the air flow near the first air inlet 22 and affecting the air intake flow of the first air inlet 22.

[0080] The first fan 64 is located below the heat exchanger 30. On the one hand, it can make full use of the idle space below the heat exchanger 30. On the other hand, the heat exchanger 30 can be used as a fixed support to suspend and install the first fan 64 on the heat exchanger 30, saving manufacturing costs.

[0081] The third air outlet 63 is located above the lower end of the heat exchanger 30, and can send the air flow flowing in from the third air inlet 62 and the third air duct 61 to the first air inlet section 211, and then directly flow into the heat exchanger 30 for heat exchange and temperature adjustment. When the air conditioner is heating, the air flow in the third air duct 61 may be relatively low-temperature air flow. If the third air outlet 63 is located below the lower end of the heat exchanger 30, the relatively low-temperature air flow may stay below the heat exchanger 30, weakening the influence on increasing the air flow in the low-efficiency air area.

[0082] In some embodiments of the air conditioner of the utility model, as Figure 5 shown, the inlet side 441 of the second wind wheel opens upward. The second air outlet 43 opens downward. The distance L3 from the second air outlet 43 to the upper end of the heat exchanger 30 is less than 1 / 4 of the height L4 of the heat exchanger 30.

[0083] The inlet side 641 of the first fan opens downward. The third air outlet 63 opens opposite to the second air outlet 43. The distance L12 from the third air outlet 63 to the lower end of the heat exchanger 30 is less than 1 / 4 of the height L4 of the heat exchanger 30.

[0084] In this embodiment, the air flow enters the second air duct 41 from the second air inlet 42, flows downward through the inlet side 441 of the second air wheel into the second air wheel 44, and then flows downward out through the outlet side of the second air wheel 44, the air guide pipe and the second air outlet 43. In this way, from the second air inlet 42 to the second air outlet 43, the air flow has less turning and less air loss.

[0085] Generally, the upper end of the first air inlet 22 is flush with or not much different from the upper end of the heat exchanger 30. When the second air duct 41 is not provided, due to the obstruction of the upper end of the first air inlet 22, the air inflow in the area near the upper end of the heat exchanger 30 is usually less than that in the middle area of the heat exchanger 30. During refrigeration or heating, the air flow passing through the area near the upper end of the heat exchanger 30 is relatively small, resulting in waste of the heat exchange capacity in the area near the upper end of the heat exchanger 30.

[0086] In this embodiment, by setting L3 less than L4 / 4, the air flow flowing out through the second air outlet 43 can pass through the area near the upper end of the heat exchanger 30. That is to say, the heat exchange capacity in the area near the upper end of the heat exchanger 30 can be fully utilized, improving the refrigeration and heating capacities of the air conditioner and the energy efficiency of the air conditioner.

[0087] In this embodiment, the air flow enters the third air duct 61 from the third air inlet 62, flows upward through the inlet side 641 of the first fan into the first fan 64, and then flows upward out through the outlet side of the first fan 64, the air guide pipe and the second air outlet 43. In this way, from the third air inlet 62 to the third air outlet 63, the air flow has less turning and less air loss.

[0088] When the third air duct 61 is not provided, due to the obstruction of the lower end of the first air inlet 22, the air inflow in the area near the lower end of the heat exchanger 30 is usually less than that in the middle area of the heat exchanger 30. During refrigeration or heating, the air flow passing through the area near the lower end of the heat exchanger 30 is relatively small, resulting in waste of the heat exchange capacity in the area near the lower end of the heat exchanger 30.

[0089] In this embodiment, by setting L12 less than L4 / 4, the air flow flowing out through the third air outlet 63 can pass through the area near the lower end of the heat exchanger 30. That is to say, the heat exchange capacity in the area near the lower end of the heat exchanger 30 can be fully utilized, improving the refrigeration and heating capacities of the air conditioner and the energy efficiency of the air conditioner.

[0090] In some embodiments of the air conditioner of the utility model, as Figures 3 - 4 shown, the minimum distance L15 between the second air outlet 43 and the heat exchanger 30 is greater than or equal to 40 mm. The minimum distance L16 between the third air outlet 63 and the heat exchanger 30 is greater than or equal to 40 mm.

[0091] In this embodiment, the second air outlet 43 and the third air outlet 63 are arranged far away from the heat exchanger 30, which can prevent the air flow blown out from the second air outlet 43 and the third air outlet 63 from interfering and colliding with the air flow entering from the first air inlet 22 near the heat exchanger 30, thus affecting the heat exchange efficiency of the heat exchanger 30.

[0092] In some embodiments of the air conditioner of the utility model, such as Figures 3 - 4 shown in the figure, the heat exchanger 30 includes a first heat exchange section 31 and a second heat exchange section 32 that form an angle with each other. The distance L5 from the end of the second heat exchange section 32 far away from the first air inlet 22 to the first air inlet 22 is greater than the distance L6 from the end of the first heat exchange section 31 far away from the first air inlet 22 to the first air inlet 22.

[0093] The distance L7 from the first heat exchange section 31 to the axis of the first air wheel 24 is less than the distance L8 from the second heat exchange section 32 to the axis of the first air wheel 24.

[0094] In the projection of the cross-section of the first air wheel 24, the first heat exchange section 31 is located between the first air wheel 24 and the first air inlet 22, and both the second air outlet 43 and the third air outlet 63 are on the side of the second heat exchange section 32 far away from the first air wheel 24.

[0095] In this embodiment, the heat exchanger 30 is formed by splicing the first heat exchange section 31 and the second heat exchange section 32 that form an angle with each other, and a transition fillet can be provided at the connection between the first heat exchange section 31 and the second heat exchange section 32.

[0096] The first heat exchange section 31 is close to the first air inlet 22 and close to the first air wheel 24. That is to say, the first heat exchange section 31 is in the high-efficiency air area (compared with the low-efficiency air area). The second heat exchange section 32 is far away from the first air inlet 22 and far away from the first air wheel 24. That is to say, at least part of the second heat exchange section 32 is in the low-efficiency air area. During refrigeration or heating, the air flow passing through the second heat exchange section 32 is relatively small, and the heat exchange capacity of the second heat exchange section 32 may be wasted.

[0097] In this embodiment, by arranging the second air outlet 43 and the third air outlet 63 in the low-efficiency air area and on the outside of the second heat exchange section 32, the air flow rate passing through the second heat exchange section 32 can be increased, the heat exchange capacity of the second heat exchange section 32 can be fully utilized, thereby improving the refrigeration and heating capabilities of the air conditioner and improving the energy efficiency of the air conditioner.

[0098] In some embodiments of the air conditioner of the utility model, such as Figures 3 - 4 shown in the figure, the heat exchanger 30 includes a first heat exchange section 31 and a second heat exchange section 32 that form an angle with each other. The distance L5 from the end of the second heat exchange section 32 far away from the first air inlet 22 to the first air inlet 22 is greater than the distance L6 from the end of the first heat exchange section 31 far away from the first air inlet 22 to the first air inlet 22.

[0099] On the projection of the cross-section of the first wind wheel 24, the included angle α between the first heat exchange section 31 and the first air inlet 22 is 0 to 15 degrees, and the included angle β between the second heat exchange section 32 and the first air inlet 22 is 75 to 90 degrees. And the first heat exchange section 31 is located between the first wind wheel 24 and the first air inlet 22, and both the second air outlet 43 and the third air outlet 63 are located on the side of the second heat exchange section 32 away from the first wind wheel 24.

[0100] In this embodiment, the first heat exchange section 31 is located in the high-efficiency wind area, and the second heat exchange section 32 is at least partially located in the low-efficiency wind area. By arranging the second air outlet 43 and the third air outlet 63 in the low-efficiency wind area and on the outer side of the second heat exchange section 32, the air flow rate passing through the second heat exchange section 32 can be increased, and the heat exchange capacity of the second heat exchange section 32 can be fully utilized, thereby improving the refrigeration and heating capacities of the air conditioner and the energy efficiency of the air conditioner.

[0101] The included angle α between the first heat exchange section 31 and the first air inlet 22 is 0 to 15 degrees, which can promote the air flow entering from the first air inlet 22 to flow towards the lateral end of the first heat exchange section 31 ( Figures 3 - 4 the right side in the figure), so as to fully utilize the heat exchange capacity of the lateral end of the first heat exchange section 31 and avoid waste of heat exchange capacity.

[0102] The included angle β between the second heat exchange section 32 and the first air inlet 22 is 75 to 90 degrees, which can promote the air flow entering from the first air inlet 22 to flow towards the lateral end of the second heat exchange section 32 ( Figures 3 - 4 the rear side in the figure), so as to fully utilize the heat exchange capacity of the lateral end of the second heat exchange section 32 and avoid waste of heat exchange capacity.

[0103] In some embodiments of the air conditioner of the utility model, as Figures 3 - 4 shown, the heat exchanger 30 includes a first heat exchange section 31 and a second heat exchange section 32 that form an included angle with each other. The distance L5 from the end of the second heat exchange section 32 away from the first air inlet 22 to the first air inlet 22 is greater than the distance L6 from the end of the first heat exchange section 31 away from the first air inlet 22 to the first air inlet 22.

[0104] On the projection of the cross-section of the first wind wheel 24, the minimum distance L9 from the second air outlet 43 to the first air inlet 22 is greater than the distance L6 from the end of the first heat exchange section 31 away from the first air inlet 22 to the first air inlet 22. And the minimum distance L17 from the third air outlet 63 to the first air inlet 22 is greater than the distance L6 from the end of the first heat exchange section 31 away from the first air inlet 22 to the first air inlet 22.

[0105] In this embodiment, the second air outlet 43 and the third air outlet 63 are located away from the first wind wheel 24 and away from the first air inlet 22, that is to say, at the center of the low-efficiency wind area. Setting the second air outlet 43 and the third air outlet 63 here can, on the one hand, increase the air flow rate passing through the second heat exchange section 32, make full use of the heat exchange capacity of the second heat exchange section 32, thereby improving the cooling and heating capacity of the air conditioner and the energy efficiency of the air conditioner. On the other hand, it can reduce or avoid the interference and collision between the air flow flowing out from the second air outlet 43 and the third air outlet 63 and the air flow entering from the first air inlet 22, thus causing additional wind loss.

[0106] In some embodiments of the air conditioner of the utility model, such as Figures 1 - 2 shown, the first side wall 11 is the front panel.

[0107] The height of the first air inlet 22 is greater than the width. The height of the first air outlet 23 is greater than the width L13. The width of the first air outlet 23 is less than the width L14 of the first air inlet 22.

[0108] In this embodiment, the first air inlet 22, the second air inlet 42, the third air inlet 62 and the first air outlet 23 are all arranged on the front panel, which is convenient for embedding and installing the air conditioner in furniture cabinets (such as kitchen cabinets, TV cabinets), and improving the consistency of the home decoration style.

[0109] Both the first air inlet 22 and the first air outlet 23 extend vertically, which can make full use of the space in front of the air conditioner and increase the air inlet area and the air outlet area.

[0110] In this embodiment, the width L14 of the first air outlet 23 is less than the width L13 of the first air inlet 22. In this way, the air inlet area can be increased, the air inlet speed can be reduced, and the air outlet speed of the air conditioner can be increased, thereby increasing the air supply distance of the air conditioner.

[0111] So far, those skilled in the art should recognize that although many 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. A floor-standing air conditioner, characterized in that, Including: A housing; A first air duct formed inside the housing, with a first air inlet and a first air outlet provided at both ends of the first air duct; Both the first air inlet and the first air outlet are opened on the first side wall of the housing; a first air wheel is provided inside the first air duct, and the first air wheel divides the first air duct into a first air inlet section upstream of the first air wheel and a first air outlet section downstream of the first air wheel; A heat exchanger vertically arranged inside the first air inlet section; A second air duct formed inside the housing, with a second air inlet and a second air outlet provided at both ends of the second air duct; the second air inlet is opened on the first side wall and is above the first air inlet; the second air outlet is inside the first air inlet section and is on the side of the heat exchanger away from the first air wheel; a second air wheel is provided inside the second air duct; A third air duct formed inside the housing, with a third air inlet and a third air outlet provided at both ends of the third air duct; the third air inlet is opened on the first side wall and is below the first air inlet; the third air outlet is inside the first air inlet section and is on the side of the heat exchanger away from the first air wheel; a first blower is provided inside the third air duct.

2. The air conditioner according to claim 1, wherein The first air wheel is a cross-flow air wheel, and the axis of the first air wheel extends vertically; the upper end of the first air wheel is coaxially driven and connected to a first motor; the first blower is a centrifugal blower; The second air wheel is a centrifugal air wheel, and the second air wheel is coaxially driven and connected to a second motor; or The second air wheel is a centrifugal air wheel, and the axis of the second air wheel is parallel to the axis of the first air wheel; the first motor is also connected to the second air wheel through a transmission mechanism.

3. The air conditioner according to claim 2, wherein In the projection of the cross-section of the first air wheel, the minimum distance from the second air outlet to the axis of the first air wheel is greater than the minimum distance from the first air inlet to the axis of the first air wheel, and the minimum distance from the third air outlet to the axis of the first air wheel is greater than the minimum distance from the first air inlet to the axis of the first air wheel.

4. The air conditioner according to claim 3, wherein The second air inlet is arranged at intervals above the first air inlet; The second air wheel is above the heat exchanger; the second air outlet is below the upper end of the heat exchanger; The third air inlet is arranged at intervals below the first air inlet; The first blower is below the heat exchanger; the third air outlet is above the lower end of the heat exchanger.

5. The air conditioner according to claim 4, wherein The inlet side of the second air wheel opens upward; the second air outlet opens downward; the distance from the second air outlet to the upper end of the heat exchanger is less than 1 / 4 of the height of the heat exchanger; The inlet side of the first fan faces downward; the third air outlet opening faces the second air outlet; the distance between the third air outlet and the lower end of the heat exchanger is less than 1 / 4 of the height of the heat exchanger.

6. The air conditioner according to claim 5, wherein the minimum distance between the second air outlet and the heat exchanger is greater than or equal to 40 mm; the minimum distance between the third air outlet and the heat exchanger is greater than or equal to 40 mm.

7. 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 distance from the end of the second heat exchange section far from the first air inlet to the first air inlet is greater than the distance from the end of the first heat exchange section far from the first air inlet to the first air inlet; the distance between the first heat exchange section and the axis of the first wind wheel is less than the distance between the second heat exchange section and the axis of the first wind wheel; in the projection of the cross-section of the first wind wheel, the first heat exchange section is between the first wind wheel and the first air inlet, and both the second air outlet and the third air outlet are on the side of the second heat exchange section far from the first wind wheel.

8. 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 distance from the end of the second heat exchange section far from the first air inlet to the first air inlet is greater than the distance from the end of the first heat exchange section far from the first air inlet to the first air inlet; in the projection of the cross-section of the first wind wheel, the angle between the first heat exchange section and the first air inlet is 0 to 15 degrees, and the angle between the second heat exchange section and the first air inlet is 75 to 90 degrees; and the first heat exchange section is between the first wind wheel and the first air inlet, and both the second air outlet and the third air outlet are on the side of the second heat exchange section far from the first wind wheel.

9. 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 distance from the end of the second heat exchange section far from the first air inlet to the first air inlet is greater than the distance from the end of the first heat exchange section far from the first air inlet to the first air inlet; in the projection of the cross-section of the first wind wheel, the minimum distance between the second air outlet and the first air inlet is greater than the distance from the end of the first heat exchange section far from the first air inlet to the first air inlet; and the minimum distance between the third air outlet and the first air inlet is greater than the distance from the end of the first heat exchange section far from the first air inlet to the first air inlet.

10. The air conditioner according to claim 3, wherein the first side wall is the front panel; the height of the first air inlet is greater than the width; the height of the first air outlet is greater than the width; the width of the first air outlet is less than the width of the first air inlet.

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