Cabinet air conditioner

Abstract

The utility model provides a cabinet air conditioner. The cabinet air conditioner comprises a machine shell, a first air duct, a heat exchanger and a second air duct. The first air channel is formed in the machine shell. A first air inlet and a first air outlet are formed in the two ends of the first air channel. The first air inlet and the first air outlet are both formed in the first side wall of the machine shell. A first wind wheel is arranged in the first air channel and divides the first air channel into a first air inlet section located on the upstream of the first wind wheel and a first air outlet section located on the downstream of the first wind wheel. The heat exchanger is vertically arranged in the first air inlet section. The second air channel is formed in the machine shell. A second air inlet and a second air outlet are formed in the two ends of the second air channel. The second air inlet is formed in the first side wall. The second air outlet is located in the first air inlet section and located between the heat exchanger and the first wind wheel. And a second wind wheel is arranged in the second air duct. The air outlet flow and the air supply distance of the air conditioner can be improved.

Description

Technical Field

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

[0002] For a cabinet 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 air return 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 in the air duct, resulting in a small air output volume and a short air supply distance of the air conditioner, which affects the user experience. Summary of the Utility Model

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

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

[0005] A cabinet air conditioner includes a housing, a first air duct, a heat exchanger, and a second air duct.

[0006] The first air duct is formed inside the housing. A first air inlet and a first air outlet are 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 arranged inside the first air duct. 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 housing. 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. The second air outlet is inside the first air inlet section and between the heat exchanger and the first air wheel. A second air wheel is arranged inside the second air duct.

[0009] Optionally, the first air inlet and the first air outlet are horizontally spaced apart.

[0010] The first air wheel is a cross-flow air wheel, and the axis of the first air wheel extends vertically. The second air wheel is a centrifugal air wheel or an axial-flow air wheel, and the axis of the second air wheel extends vertically.

[0011] The air conditioner further includes a first motor, and the first motor is drivingly connected to the first wind wheel and the second wind wheel.

[0012] Optionally, the axes of the first wind wheel and the second wind wheel are coaxial. The first motor is a dual-axis motor, and the output shaft at one end of the first motor is drivingly connected to the first wind wheel coaxially, and the output shaft at the other end is drivingly connected to the second wind wheel coaxially.

[0013] Optionally, the second air inlet is spaced above the first air inlet.

[0014] The second wind wheel is a centrifugal wind wheel and is located above the first wind wheel.

[0015] The inlet side of the second wind wheel opens upward. The second air outlet opens downward.

[0016] Optionally, the distance from the second air outlet to the upper end of the first wind wheel is less than 1 / 4 of the height of the first wind wheel.

[0017] Optionally, the heat exchanger includes a first heat exchange section and a second heat exchange section that form an angle with each other. The first heat exchange section is located between the first air inlet and the first wind wheel. The second heat exchange section is fixedly connected to one end of the first heat exchange section away from the first wind wheel and is located on the side of the first heat exchange section away from the first air inlet. The width of the first heat exchange section is greater than the width of the second heat exchange section.

[0018] The second air outlet is located between the second heat exchange section and the first wind wheel.

[0019] Optionally, the distance from the second heat exchange section to the axis of the first wind wheel is greater than 1.5 times the distance from the first heat exchange section to the axis of the first wind wheel.

[0020] The distance from the axis of the first wind wheel to the first air inlet is less than the distance from the second heat exchange section to the axis of the first wind wheel.

[0021] Optionally, the width of the first air inlet is greater than the width of the first air outlet.

[0022] On the projection of the cross-section of the first wind wheel, the angle between the line connecting the center of the width of the first air inlet and the axis of the first wind wheel and the first air inlet is less than 70 degrees.

[0023] Optionally, the angle between the first heat exchange section and the first air inlet is 5 to 30 degrees.

[0024] The angle between the second heat exchange section and the first air inlet is 95 to 120 degrees.

[0025] Optionally, the minimum distance between the second air outlet and the first air inlet is greater than the distance between the end of the first heat exchange section away from the first air inlet and the first air inlet.

[0026] In the cabinet air conditioner of the present utility model, by providing the second air duct and the second air wheel, the normal temperature air in front of the first side wall can be sucked in from the second air inlet, and then the normal temperature air is discharged between the heat exchanger and the first air wheel. After the normal temperature air is mixed with the temperature-controlled air flowing out of the heat exchanger, it is sucked in by the second air wheel and discharged to the front of the first side wall through the first air outlet. That is to say, the second air duct and the second air wheel can supply air for the air conditioner to make up for the air volume loss caused by the large change in the air flow direction when the air inlet and the air outlet are on the same side of the air conditioner, so as to achieve the effect of increasing the air flow rate and the air supply distance of the air conditioner.

[0027] On the other hand, by mixing the normal temperature air in the second air duct with the temperature-controlled air flowing out of the heat exchanger, the air outlet temperature can be increased during refrigeration and decreased during heating, thereby preventing the user from feeling uncomfortable when the large air volume is directly blown at the user, and achieving the effect of improving the user experience.

[0028] Through the following detailed description of the specific embodiments of the present utility model in conjunction with the drawings, those skilled in the art will become more clear about the above and other objects, advantages and features of the present utility model. Description of the Drawings

[0029] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

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

[0031] Figure 2 is a schematic structural diagram of a cabinet air conditioner according to an embodiment of the present utility model;

[0032] Figure 3 is Figure 1 a schematic cross-sectional view along the A-A axis in

[0033] Figure 4 is Figure 3 a schematic cross-sectional view along the B-B axis in

[0034] Figure 5 is a schematic structural diagram of the first air wheel, the first motor, the second air wheel and the heat exchanger of a cabinet air conditioner according to an embodiment of the present utility model.

[0035] List of reference numerals:

[0036] 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 air wheel; 30. Heat exchanger; 31. First heat exchange section; 32. Second heat exchange section; 41. Second air duct; 42. Second air inlet; 43. Second air outlet; 44. Second air wheel; 441. Inlet side of the second air wheel; 45. Air duct; 50. First motor. Detailed implementation manners

[0037] The following refers to Figures 1 to 5 to describe the cabinet air conditioner according to the embodiments of the present invention. In the description of the embodiments of the present invention, 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 invention, the meaning of "a plurality of" 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.

[0038] Unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific situations.

[0039] In addition, in the description of the embodiments of the present invention, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. That is, in the description of the embodiments of the present invention, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "beneath", or "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0040] In the description of this embodiment, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] Figure 1 is a schematic front view of a cabinet air conditioner according to an embodiment of the present utility model, as Figure 1 shown, and with reference to Figures 2 - 5 . The embodiment of the present utility model provides a cabinet air conditioner, which includes a cabinet 10, a first air duct 21, a heat exchanger 30, and a second air duct 41.

[0042] The first air duct 21 is formed inside the cabinet 10. The two 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 cabinet 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.

[0043] The heat exchanger 30 is arranged vertically inside the first air inlet section 211.

[0044] The second air duct 41 is formed inside the cabinet 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. The second air outlet 43 is inside the first air inlet section 211 and is between the heat exchanger 30 and the first air wheel 24. A second air wheel 44 is arranged inside the second air duct 41.

[0045] 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 normal-temperature air at the second air inlet 42 into the second air duct 41, blow it to the second air outlet 43 and then discharge it.

[0046] There are two 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 under the combined action of the blowing force of the second air wheel 44 and the suction of the first air wheel 24 and enters the first air inlet section 211.

[0047] The heat exchanger 30 is arranged vertically in the first air inlet section 211 for adjusting the temperature, humidity, etc. of the passing air flow. The first air inlet section 211 can be divided into the upstream side of the heat exchanger 30 and the downstream side of the heat exchanger 30 by the heat exchanger 30. The normal temperature air entering through the first air inlet 22 enters the downstream side of the heat exchanger 30 after heat exchange by the heat exchanger 30. The normal temperature air entering through the second air inlet 42 directly enters the downstream side of the heat exchanger 30 and is mixed with the air that has undergone heat exchange.

[0048] The first air inlet 22 and the first air outlet 23 can be arranged at intervals along the transverse direction 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 housing 10, etc. 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.

[0049] It should be understood that when the air inlet and the air outlet of the air conditioner are on the same side of the housing 10, the air inlet direction and the air outlet direction form an included angle of approximately 180 degrees, the air flow direction changes greatly, and a large amount of air volume loss will occur when the air flow changes the flow direction, resulting in a smaller air outlet volume and a shorter air supply distance of the air conditioner, which is difficult to meet the user's needs.

[0050] In this embodiment, by setting the second air duct 41 and the second air wheel 44, the normal temperature air in front of the first side wall 11 can be sucked in from the second air inlet 42, and then the normal temperature air is discharged between the heat exchanger 30 and the first air wheel 24. After the normal temperature air is mixed with the temperature-adjusted air flowing out of the heat exchanger 30, it is sucked in by the second air wheel 44 and discharged to the front of the first side wall 11 through the first air outlet 23. That is to say, the second air duct 41 and the second air wheel 44 can perform air inlet and air supply compensation for the air conditioner, make up for the air volume loss caused by the too large change of the air flow direction when the air inlet and the air outlet are on the same side of the air conditioner, and achieve the effect of increasing the air outlet flow rate and the air supply distance of the air conditioner.

[0051] On the other hand, by mixing the normal temperature air in the second air duct 41 with the temperature-adjusted air flowing out of the heat exchanger 30, the air outlet temperature can be increased during refrigeration and the air outlet temperature can be decreased during heating, so as to prevent the user from feeling uncomfortable when the large amount of air is directly blown at the user, and achieve the effect of improving the user experience.

[0052] In some embodiments of the air conditioner of the utility model, such asFigure 2 and Figure 4 As shown in Figure 4 , the first air inlet 22 and the first air outlet 23 are arranged at intervals in the horizontal direction.

[0053] The first air impeller 24 is a cross-flow air impeller, and the axis of the first air impeller 24 extends vertically. The second air impeller 44 is a centrifugal air impeller or an axial-flow air impeller, and the axis of the second air impeller 44 extends vertically.

[0054] The air conditioner further includes a first motor 50, and the first motor 50 is drivingly connected to the first air impeller 24 and the second air impeller 44.

[0055] The first air inlet 22 and the first air outlet 23 are spaced apart in the horizontal direction, which can separate the incoming air flow and the outgoing air flow in the horizontal direction, preventing the incoming air flow and the outgoing air flow from forming a short circuit in front of the first side wall 11 and affecting the cooling and heating capabilities of the air conditioner.

[0056] The cross-flow air impeller can generate a large amount of air volume and has uniform air output, which is suitable for the case where the cabinet air conditioner has a large demand for air volume.

[0057] In this embodiment, the first motor 50 can drive the first air impeller 24 and the second air impeller 44 simultaneously, thereby reducing the production cost. For example, the first air impeller 24 and the second air impeller 44 are arranged at intervals in the horizontal direction, and the first motor 50 can be placed between the first air impeller 24 and the second air impeller 44, and drive the two air impellers to rotate through transmission devices (such as conveyor belts, chains, gears, etc.) respectively. Another example is that the first air impeller 24 and the second air impeller 44 are arranged at intervals in the vertical direction, and the first motor 50 can be a double-shaft motor, and the two output shafts are respectively drivingly connected to an air impeller.

[0058] The second air impeller 44 can be a centrifugal air impeller, as Figure 5 shown. The centrifugal air impeller has a small volume, which can reduce the overall volume of the air conditioner. The inlet side of the centrifugal air impeller can face the position of the second air inlet 42, and a duct 45 can be arranged on the outlet side of the centrifugal air impeller to guide the air flow to the first air inlet section 211.

[0059] The second air impeller 44 can also be an axial-flow air impeller, and the axial-flow air impeller has a simple structure and is easy to arrange. During actual use, as Figure 5 shown, the inlet of the duct 45 can be connected to the outlet side of the axial-flow air impeller.

[0060] In some embodiments of the air conditioner of the utility model, as Figures 4 - 5 shown, the axes of the first air impeller 24 and the second air impeller 44 are coaxial. The first motor 50 is a double-shaft motor, and the output shaft at one end of the first motor 50 is drivingly connected to the first air impeller 24 coaxially, and the output shaft at the other end is drivingly connected to the second air impeller 44 coaxially.

[0061] In this embodiment, the first motor 50 is a dual-shaft motor, which is arranged between the first wind wheel 24 and the second wind wheel 44. The two output shafts are coaxial, and each is connected to a wind wheel by transmission. The transmission efficiency of the coaxial transmission connection is high. The dual-shaft motor is connected to the two wind wheels by coaxial transmission, which can reduce the energy consumption of the first motor 50, thereby improving the energy efficiency of the air conditioner. Compared with connecting the two wind wheels by transmission devices such as conveyor belts and chains, this solution can also reduce the types and quantities of parts, thereby reducing production costs.

[0062] On the other hand, by setting up a dual-axis motor, the rotational speeds of the first wind wheel 24 and the second wind wheel 44 can be maintained at a preset ratio, so that the total air intake flow of the first wind wheel 24 and the air intake flow of the second air duct 41 are approximately maintained at a certain ratio, thereby preventing unnecessary energy consumption when the ratios between the two are not harmonious.

[0063] In other embodiments of the air conditioner of the utility model, the axes of the first wind wheel 24 and the second wind wheel 44 may not be coaxial, but may be spaced parallel or angled to each other. In this case, a corresponding double-shaft motor may be selected so that the two output shafts of the double-shaft motor correspond to the two wind wheels, and each of them is connected to one wind wheel by coaxial transmission. In this way, the flexibility of the arrangement of the internal components of the air conditioner can be improved.

[0064] In some embodiments of the air conditioner of the utility model, as Figure 2 and Figure 5 As shown, the second air inlet 42 is spaced apart and arranged on the upper side of the first air inlet 22 .

[0065] The second wind wheel 44 is a centrifugal wind wheel and is located on the upper side of the first wind wheel 24 .

[0066] The inlet side 441 of the second wind wheel opens upwards, and the second air outlet 43 opens downwards.

[0067] The second air inlet 42 and the first air inlet 22 can be arranged adjacent to each other or spaced apart. In the present embodiment, when the second air inlet 42 and the first air inlet 22 are spaced apart, it can prevent the second air inlet 42 from sucking in the airflow near the first air inlet 22, thereby affecting the air intake flow of the first air inlet 22. On the other hand, the second air inlet 42 is arranged on the upper side of the first air inlet 22, and can suck in air located at a higher place. Generally speaking, the temperature of air at a higher place is relatively high. When the air conditioner is cooling, the second wind wheel 44 can suck air with a relatively high temperature into the second air duct 41, mix it with the temperature-adjusting airflow, and then blow it out, which can speed up the cooling of the air at a higher place in the room, eliminate the indoor temperature stratification, and improve the user experience.

[0068] In this embodiment, the air flow enters the second air duct 41 from the second air inlet 42, goes downward through the inlet side 441 of the second air wheel and enters the second air wheel 44, and then flows downward out through the outlet side of the second air wheel 44, the air guide pipe 45 and the second air outlet 43. From the second air inlet 42 to the second air outlet 43, the air flow has less turning and less air loss.

[0069] In some embodiments of the air conditioner of the utility model, as Figure 4 shown, the distance L3 between the second air outlet 43 and the upper end of the first air wheel 24 is less than 1 / 4 of the height L4 of the first air wheel 24.

[0070] Generally, the upper and lower ends of the air wheel are usually flush or nearly flush with the upper and lower ends of the corresponding air duct. The air resistance is relatively large near the upper and lower ends of the air duct, resulting in a relatively small flow rate, and further causing the suction and exhaust capabilities of the upper and lower ends of the air wheel to be idle and wasted. In this embodiment, by setting L3 less than L4 / 4, the air flow flowing out through the second air outlet 43 can be inhaled and exhausted by the area at the upper end of the first air wheel 24. That is to say, the suction and exhaust capabilities of the first air wheel 24 can be fully utilized, the air intake and exhaust flow rates can be increased, and thus the air outlet volume and the air outlet distance can be increased.

[0071] On the other hand, if the second air outlet 43 extends downward too long, it will also cause the second air duct 41 to be longer, with a larger air resistance, and a larger air loss will be generated in the second air duct 41 for the incoming air flow. Shortening the length of the second air outlet 43 extending downward can reduce the air loss of the incoming air flow in the second air duct 41.

[0072] In some embodiments of the air conditioner of the utility model, as Figure 3 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 first heat exchange section 31 is between the first air inlet 22 and the first air wheel 24. The second heat exchange section 32 is fixedly connected to one end of the first heat exchange section 31 far from the first air wheel 24 and is on the side of the first heat exchange section 31 far from the first air inlet 22. The width L1 of the first heat exchange section 31 is greater than the width L2 of the second heat exchange section 32.

[0073] The second air outlet 43 is between the second heat exchange section 32 and the first air wheel 24.

[0074] The first air wheel 24 forms a suction negative pressure in the first air inlet section 211 to suck the air flow into the first air wheel 24. Generally, the magnitude of the suction negative pressure is negatively correlated with the distance from the first air wheel 24 (specifically, negatively correlated with the distance from the eccentric vortex formed by the first air wheel 24), that is, the farther away from the first air wheel 24, the smaller the suction negative pressure and the smaller the suction influence of the first air wheel 24.

[0075] The heat exchanger 30 is formed by splicing a first heat exchange section 31 and a second heat exchange section 32 that form an angle with each other. A transition fillet can be provided at the connection between the first heat exchange section 31 and the second heat exchange section 32 ( Figure 3 In Figure 3 , the width L1 of the first heat exchange section 31 and the width L2 of the second heat exchange section 32 are both the widths when no transition fillet is provided at the connection. The dashed lines in the figure indicate the extension lines of the first heat exchange section 31 and the second heat exchange section 32). The first heat exchange section 31 is close to the first air inlet 22 and close to the first air wheel 24. The negative pressure formed by the first air wheel 24 at the first heat exchange section 31 is relatively large. On the one hand, it can accelerate the air intake from the first air inlet 22, and on the other hand, it can prompt the air to quickly pass through the first heat exchange section 31 and enter the first air wheel 24. That is to say, the first heat exchange section 31 undertakes more heat exchange capacity. By setting the first heat exchange section 31 to have a relatively large width, the air intake area and the heat exchange area can be enlarged, so as to efficiently adjust the temperature and humidity of the passing air.

[0076] The second heat exchange section 32 is relatively far from the first air wheel 24, and the negative pressure there is relatively small and the air intake flow is small. Therefore, the width of the second heat exchange section 32 is appropriately reduced to avoid wasting its heat exchange capacity. On the other hand, by providing a second air outlet 43 between the second heat exchange section 32 and the first air wheel 24, the air intake flow can be supplemented, and the problem of the relatively small air intake volume entering the first air wheel 24 from the direction of the second heat exchange section 32 can be improved, so as to increase the total air intake flow and the air outlet flow of the first air wheel 24.

[0077] In some embodiments of the utility model air conditioner, such as Figure 3 shown, the distance L5 from the second heat exchange section 32 to the axis of the first air wheel 24 is greater than 1.5 times the distance L6 from the first heat exchange section 31 to the axis of the first air wheel 24.

[0078] The distance L7 from the axis of the first air wheel 24 to the first air inlet 22 is less than the distance L5 from the second heat exchange section 32 to the axis of the first air wheel 24.

[0079] By lengthening the distance from the second heat exchange section 32 to the axis of the first air wheel 24, it is convenient to provide a second air inlet 42 between the second heat exchange section 32 and the first air wheel 24. The heat exchanger 30 usually has a rectifying ability. By shortening the distance from the first heat exchange section 31 to the axis of the first air wheel 24, the rectifying ability of the first heat exchange section 31 can be utilized to improve the stability of the air flow on the air intake side of the first air wheel 24, reduce the turbulent flow, and thus reduce the wind loss.

[0080] In this embodiment, the distance L7 between the axis of the first wind wheel 24 and the first air inlet 22 is less than the distance L5 between the second heat exchange section 32 and the axis of the first wind wheel 24. That is to say, the width of the heat exchanger 30 is elongated in the transverse direction, and the first wind wheel 24 is moved forward closer to the first air inlet 22, thereby reducing the length of the air duct between the first air inlet 22 and the first wind wheel 24 and increasing the width of the air duct between the first air inlet 22 and the first wind wheel 24, which is beneficial to increasing the total air inlet flow rate.

[0081] In some embodiments of the utility model air conditioner, such as Figure 3 shown, the width L8 of the first air inlet 22 is greater than the width L9 of the first air outlet 23.

[0082] On the projection of the cross-section of the first wind wheel 24, the included angle A between the line connecting the center M of the width of the first air inlet 22 and the axis of the first wind wheel 24 and the first air inlet 22 is less than 70 degrees.

[0083] In this embodiment, the width of the first air inlet 22 is greater than the width of the first air outlet 23. Increasing the width of the first air inlet 22 can increase the air inlet area and the air inlet volume. When the flow rate is the same, it can also reduce the air inlet speed and prevent the interference between the air inlet airflow and the air outlet airflow in front of the first side wall 11 when the air inlet airflow speed is too fast. Reducing the width of the first air outlet 23 can increase the air outlet speed of the air conditioner, and thus increase the air supply distance of the air conditioner.

[0084] In this embodiment, by setting the included angle A less than 70 degrees, the air inlet airflow enters the first air inlet 22 at a relatively large deflection angle. On the one hand, this can reduce the direction turning angle between the air inlet airflow of the first air inlet 22 and the air outlet airflow of the first air outlet 23. That is to say, although the airflow is in and out forward, the actual direction turning is less than 180 degrees. In this way, the air loss during turning can be reduced, thereby increasing the air outlet volume and reducing the energy consumption.

[0085] In some embodiments of the utility model air conditioner, such as Figure 3 shown, the included angle B between the first heat exchange section 31 and the first air inlet 22 is 5 to 30 degrees.

[0086] The included angle C between the second heat exchange section 32 and the first air inlet 22 is 95 to 120 degrees.

[0087] The included angle between the first heat exchange section 31 and the first air inlet 22 is 5 to 30 degrees, so that the air inlet surface of the first heat exchange section 31 guides the airflow, promoting the airflow entering from the first air inlet 22 to flow towards the transverse end of the first heat exchange section 31 ( Figure 3On the right side of the middle), on the one hand, it allows more airflows to pass through the first heat exchange section 31 from the area near the first wind wheel 24, and on the other hand, it can also make full use of the heat exchange capacity of the lateral ends of the first heat exchange section 31 to avoid waste of heat exchange capacity.

[0088] The included angle between the second heat exchange section 32 and the first air inlet 22 is 95 to 120 degrees, so that the air inlet channel outside the second heat exchange section 32 is in a tapered shape, keeping the air pressure in the air inlet channel stable, and preventing the air pressure difference between the outside of the end of the second heat exchange section 32 far from the first air inlet 22 and the inside of the second heat exchange section 32 from being too small when the air pressure outside the end of the second heat exchange section 32 far from the first air inlet 22 is too low, which is not conducive to sucking in the incoming airflows.

[0089] In some embodiments of the utility model air conditioner, such as Figure 3 As shown, the minimum distance L10 from the second air outlet 43 to the first air inlet 22 is greater than the distance L11 from the end of the first heat exchange section 31 far from the first air inlet 22 to the first air inlet 22.

[0090] In this embodiment, the second air outlet 43 is on the side far from the first air inlet 22, which can prevent the airflows flowing out of the second air outlet 43 from interfering with the airflows of the first air inlet 22 and prevent the airflows flowing out of the second air outlet 43 from interfering with the airflows passing through the first heat exchange section 31.

[0091] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present utility model have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present utility model can still be directly determined or derived based on the content disclosed in the present utility model without departing from the spirit and scope of 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 cabinet air conditioner, characterized in that: include: chassis; A first air duct, wherein the first air duct is formed in the housing, and a first air inlet and a first air outlet are arranged at two ends of the first air duct; The first air inlet and the first air outlet are both provided on the first side wall of the housing; a first wind wheel is provided in the first air duct, and the first wind wheel divides the first air duct into a first air inlet section located upstream of the first wind wheel and a first air outlet section located downstream of the first wind wheel; A heat exchanger, wherein the heat exchanger is vertically arranged in the first air inlet section; The second air duct is formed in the casing, and a second air inlet and a second air outlet are arranged at both ends of the second air duct; the second air inlet is opened on the first side wall; the second air outlet is located in the first air inlet section and between the heat exchanger and the first wind wheel; a second wind wheel is arranged in the second air duct.

2. The air conditioner according to claim 1, characterized in that: The first air inlet and the first air outlet are arranged at intervals in the transverse direction; The first wind wheel is a crossflow wind wheel, and the axis of the first wind wheel extends vertically; the second wind wheel is a centrifugal wind wheel or an axial flow wind wheel, and the axis of the second wind wheel extends vertically; The air conditioner further comprises a first motor, and the first motor is drivingly connected to the first wind wheel and the second wind wheel.

3. The air conditioner according to claim 2, characterized in that: The axes of the first wind wheel and the second wind wheel are coaxial; the first motor is a dual-shaft motor, the output shaft at one end of the first motor is coaxially connected to the first wind wheel, and the output shaft at the other end is coaxially connected to the second wind wheel.

4. The air conditioner according to claim 3, characterized in that: The second air inlet is spaced apart and arranged on the upper side of the first air inlet; The second wind wheel is a centrifugal wind wheel and is located on the upper side of the first wind wheel; The inlet side of the second wind wheel opens upward; the second air outlet opens downward.

5. The air conditioner according to claim 4, characterized in that: The distance between the second air outlet and the upper end of the first wind wheel is less than 1 / 4 of the height of the first wind wheel.

6. The air conditioner according to claim 2, characterized in that: The heat exchanger comprises a first heat exchange section and a second heat exchange section which are angled with each other; the first heat exchange section is located between the first air inlet and the first wind wheel; the second heat exchange section is fixedly connected to an end of the first heat exchange section away from the first wind wheel and is located on a side of the first heat exchange section away from the first air inlet; the width of the first heat exchange section is greater than the width of the second heat exchange section; The second air outlet is located between the second heat exchange section and the first wind wheel.

7. The air conditioner according to claim 6, characterized in that: The distance between the second heat exchange section and the axis of the first wind wheel is greater than 1.5 times the distance between the first heat exchange section and the axis of the first wind wheel; The distance between the axis of the first wind wheel and the first air inlet is smaller than the distance between the second heat exchange section and the axis of the first wind wheel.

8. The air conditioner according to claim 6, characterized in that: The width of the first air inlet is greater than the width of the first air outlet; In the projection of the cross section of the first wind wheel, the angle between the first air inlet and a line connecting the center of the width of the first wind wheel and the axis of the first wind wheel is less than 70 degrees.

9. The air conditioner according to claim 6, characterized in that: The angle between the first heat exchange section and the first air inlet is 5 to 30 degrees; The included angle between the second heat exchange section and the first air inlet is 95 to 120 degrees.

10. The air conditioner according to claim 6, characterized in that: The minimum distance between the second air outlet and the first air inlet is greater than the distance between the end of the first heat exchange section away from the first air inlet and the first air inlet.

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