Cabinet-type air conditioner and control method thereof

Abstract

The application provides a cabinet air conditioner and a control method thereof. The cabinet air conditioner comprises a whole machine shell, a lower air outlet, an air inlet and an upper air outlet are sequentially arranged from low to high along the height direction of the whole machine shell, and the whole machine shell has an internal accommodating space in which an upper axial flow fan, a lower axial flow fan and an indoor heat exchanger are assembled. The indoor heat exchanger is located on the inner side of the air inlet, the upper axial flow fan is located between the upper air outlet and the top end of the indoor heat exchanger, and the lower axial flow fan is located between the lower air outlet and the bottom end of the indoor heat exchanger. The upper axial flow fan and the lower axial flow fan are both bidirectional rotation fans. The application realizes multiple air supply modes of the cabinet air conditioner, such as the surrounding air supply of simultaneous air supply from top and bottom, the shower type air supply of full upper air supply, and the carpet type air supply of full lower air supply, improves the user comfort, significantly increases the air inlet area, and further increases the air inlet volume and the air outlet volume, promotes the large circulation of air flow in the temperature adjusting space, and is beneficial to the rapid temperature adjustment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioning, and particularly relates to a cabinet air conditioner and a control method thereof. BACKGROUND

[0002] The existing up-down air outlet air conditioner is mostly a centrifugal fan. When the power component is a multi-stage centrifugal fan, the multi-air duct layout makes the overall machine size larger, the overall machine layout structure more complex, the movement mechanism more, the connection and cooperation between the multi-air ducts more complex, and the overall machine cost higher. Therefore, the existing up-down air outlet cabinet air conditioner is generally concentrated in high-end cabinet machines and has a smaller market share. Based on the foregoing problems, the existing technology proposes an up-down air outlet cabinet air conditioner using an axial flow fan. The cabinet air conditioner using the axial flow fan has the advantages of large flow coefficient, simple structure, larger fan flow under the same noise level, and relatively smaller power consumption. However, in the existing up-down air outlet cabinet air conditioner, the upper air outlet serves as the air inlet when the lower air outlet is in operation, and the lower air outlet serves as the air inlet when the upper air outlet is in operation. The heat exchanger is arranged in the air duct between the upper air outlet and the lower air outlet. The heat exchanger is mostly designed in a manner of being arranged around the cabinet machine shell to enable the air inlets to be arranged on multiple sides of the cabinet machine shell, thereby improving the air inlet area. However, the cabinet air conditioner of this air supply mode is limited by the overall diameter size (or the front-rear thickness and left-right width size) of the cabinet air conditioner and the limitation of the air outlet direction of the reversible air inlet and outlet. When the air inlet is used as the air outlet, the air inlet area of the heat exchanger is small. SUMMARY

[0003] Therefore, the present application provides a cabinet air conditioner and a control method thereof, which can overcome the technical problem of the small air inlet area of the up-down air inlet and outlet cabinet air conditioner in the related art, thereby causing the small air outlet volume.

[0004] To solve the above problems, the present application provides a cabinet air conditioner, which comprises an overall machine shell. A lower air outlet, an air inlet, and an upper air outlet are sequentially arranged from low to high along the height direction of the overall machine shell. An internal accommodating space of the overall machine shell is provided with an upper axial flow fan, a lower axial flow fan, and an indoor heat exchanger. The indoor heat exchanger is located on the inner side of the air inlet. The upper axial flow fan is located between the upper air outlet and the top end of the indoor heat exchanger. The lower axial flow fan is located between the lower air outlet and the bottom end of the indoor heat exchanger. The upper axial flow fan and the lower axial flow fan are both bidirectional rotation fans.

[0005] In some embodiments, the height of the overall machine shell is H, the height of the air inlet is h, 0.45H≥h≥0.38H, and the air inlet is located in the air inlet heat exchange core plane coverage area of the indoor heat exchanger.

[0006] In some embodiments, the upper air duct is provided in the top region of the internal accommodating space, the upper axial flow fan is located between the upper air duct and the indoor heat exchanger, and the upper air outlet is arranged corresponding to the outer port of the upper air duct, the central region of the upper air duct is provided with a first vortex breaking structure, and the first vortex breaking structure extends along the airflow guiding direction of the upper air duct.

[0007] In some embodiments, the airflow guiding direction of the upper air duct is the height direction, and the cross-sectional area of the first vortex breaking structure becomes larger and larger from bottom to top.

[0008] In some embodiments, the cross section of the first vortex breaking structure is an ellipse, and the long axis of the ellipse extends front to back and the short axis extends left to right.

[0009] In some embodiments, the central axis section of the upper air duct on the left-right symmetry plane of the whole machine shell is a hyperbola conforming to the following formula:

[0010] wherein, 135≤a≤152, 102.5≤b≤104.

[0011] In some embodiments, the maximum diameter of the upper air duct is C, the long axis of the ellipse of the maximum cross section of the first vortex breaking structure is c1 and the short axis is d1, 0.15C≤c1≤0.18C, 0.1C≤d1≤0.12C; the long axis of the ellipse of the minimum cross section of the first vortex breaking structure is c2 and the short axis is d2, 0.06C≤c2≤0.08C, 0.04C≤d2≤0.06C.

[0012] In some embodiments, the lower air duct is provided in the bottom region of the internal accommodating space, the lower axial flow fan is located between the lower air duct and the indoor heat exchanger, and the lower air outlet is arranged corresponding to the outer port of the lower air duct, the central region of the lower air duct is provided with a second vortex breaking structure, and the second vortex breaking structure extends along the airflow guiding direction of the lower air duct.

[0013] In some embodiments, the airflow guiding direction of the lower air duct is an arc direction from the vertically smooth up and down to the horizontally front and back, and the cross-sectional area of the second vortex breaking structure becomes smaller and smaller from top to bottom.

[0014] In some embodiments, the central axis section of the lower air duct on the left-right symmetry plane of the whole machine shell is a parabola conforming to the following formula:

[0015] y=px 2 wherein, 0.0028≤p≤0.0031.

[0016] In some embodiments, in a central axial section of the lower air duct on a center axis of the lower air duct on a left-right symmetry plane of the whole machine shell, an inner port caliber of the lower air duct is E, an outer port caliber is F, a cross section of the second vortex-breaking structure is circular, a radius of the circular of the maximum cross section of the second vortex-breaking structure is 0.11E≤e≤0.135E, and a radius of the circular of the minimum cross section of the second vortex-breaking structure is 0.04F≤f≤0.055F.

[0017] The application further provides a control method of the cabinet air conditioner.

[0018] Obtaining an air conditioner control instruction.

[0019] When the control instruction is the up-down simultaneous air supply mode, the upper axial flow fan is controlled to operate so that part of the air flow entering the internal accommodating space through the air inlet and the indoor heat exchanger is sent out through the upper air outlet, and the lower axial flow fan is controlled to operate so that another part of the air flow entering the internal accommodating space through the air inlet and the indoor heat exchanger is sent out through the lower air outlet; or,

[0020] When the control instruction is the full-up air supply mode, the upper axial flow fan is controlled to operate so that external air flow enters the internal accommodating space through the lower air outlet and the air inlet and is sent out through the upper air outlet; or,

[0021] When the control instruction is the full-down air supply mode, the lower axial flow fan is controlled to operate so that external air flow enters the internal accommodating space through the upper air outlet and the air inlet and is sent out through the lower air outlet.

[0022] In some embodiments,

[0023] When the control instruction is the full-up air supply mode, the lower axial flow fan is also controlled to operate so that air flow enters the internal accommodating space through the lower air outlet; or,

[0024] When the control instruction is the full-down air supply mode, the upper axial flow fan is also controlled to operate so that air flow enters the internal accommodating space through the upper air outlet.

[0025] The cabinet air conditioner and the control method thereof provided by the application have the following beneficial effects:

[0026] The lower axial flow fan rotating in two directions is arranged between the lower air outlet and the bottom end of the indoor heat exchanger, the upper axial flow fan rotating in two directions is arranged between the upper air outlet and the top end of the indoor heat exchanger, and the indoor heat exchanger is correspondingly matched with the air inlet between the lower air outlet and the upper air outlet, so that the multiple air supply modes of the up-down simultaneous air supply of the ring air supply, the full-up air supply of the shower air supply and the full-down air supply of the carpet air supply can be realized by controlling the rotating directions of the upper axial flow fan and the lower axial flow fan, the user comfort is improved, the air inlet area is significantly increased, the air inlet quantity and the air outlet quantity are increased (the air is simultaneously inhaled from the lower air outlet and the air inlet in the full-up air supply mode, and the air is simultaneously inhaled from the upper air outlet and the air inlet in the full-down air supply mode), the air circulation in the temperature adjusting space is promoted, and the temperature of the temperature adjusting space is rapidly adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. The drawings in the following description are only exemplary, and other embodiments can be derived from the provided drawings without paying creative labor for those skilled in the art.

[0028] Figure 1 is a schematic view of the external structure (partial perspective) of the cabinet air conditioner in the embodiment of the present application;

[0029] Figure 2 is Figure 1 the internal sectional view of the cabinet air conditioner of

[0030] Figure 3 is the air flow schematic view of the cabinet air conditioner in the embodiment of the present application in the up-down simultaneous air supply mode;

[0031] Figure 4 is the air flow schematic view of the cabinet air conditioner in the embodiment of the present application in the full-up air supply mode;

[0032] Figure 5 is the air flow schematic view of the cabinet air conditioner in the embodiment of the present application in the full-down air supply mode;

[0033] Figure 6 is the air flow pressure cloud chart of the cabinet air conditioner in the present application in the up-down simultaneous air supply mode when the up-down air duct profile is not optimized and the vortex breaking structure is not arranged, and it can be seen from the chart that the air flow negative pressure in the central region of the upper air outlet and the lower air outlet is higher than that in the outer peripheral region;

[0034] Figure 7is the air flow velocity vector diagram of the cabinet air conditioner (axial flow fan) in the application when the upper and lower air duct profiles are not optimized and no vortex breaking structure is set and the air is supplied simultaneously from the upper and lower air outlets, and it can be seen from the diagram that the air flow backflow phenomenon in the central region of the upper and lower air outlets is more serious;

[0035] Figure 8 is the air flow velocity cloud chart of the cabinet air conditioner (axial flow fan) in the application when the upper and lower air duct profiles are not optimized and no vortex breaking structure is set and the air is supplied simultaneously from the upper and lower air outlets, and it can be seen from the diagram that the air flow velocity in the central region of the upper and lower air outlets is low;

[0036] Figure 9 is the air flow velocity vector diagram of the air supply when the corresponding air duct profiles in the upper and lower air outlets are set with corresponding vortex breaking structures and the air is supplied simultaneously from the upper and lower air outlets.

[0037] The reference signs are:

[0038] 1, whole machine shell; 10, internal containing space; 11, lower air outlet; 12, air inlet; 13, upper air outlet; 21, upper axial flow fan; 22, lower axial flow fan; 3, indoor heat exchanger; 4, upper air duct; 41, first vortex breaking structure; 5, lower air duct; 51, second vortex breaking structure. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the application of the application or use thereof. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0040] In the description of the application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0041] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0042] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any meaning of importance, but are used only to distinguish one element from another. Thus, the use of "first", "second", and the like words of distinction does not connote any meaning of importance, and the scope of the present application should not be limited by these words of distinction.

[0043] Referring to Figures 1 to 9 As shown, according to the embodiment of the present application, a cabinet type air conditioner is provided, comprising a whole machine shell 1, a lower air outlet 11, an air inlet 12 and an upper air outlet 13 are sequentially arranged from low to high along the height direction of the whole machine shell 1, the whole machine shell 1 has an internal accommodating space 10, an upper axial flow fan 21, a lower axial flow fan 22 and an indoor heat exchanger 3 are assembled in the internal accommodating space 10, wherein the indoor heat exchanger 3 is located at the inner side of the air inlet 12, the upper axial flow fan 21 is located between the upper air outlet 13 and the top end of the indoor heat exchanger 3, the lower axial flow fan 22 is located between the lower air outlet 11 and the bottom end of the indoor heat exchanger 3, the upper axial flow fan 21 and the lower axial flow fan 22 are both bidirectional rotation fans, that is, the upper axial flow fan 21 and the lower axial flow fan 22 can be controlled to rotate forward or reverse, thereby realizing the selective control of the driving flow direction of the air flow.

[0044] The technical scheme is characterized in that: a lower axial flow fan 22 rotating in two directions is arranged between the lower air outlet 11 and the bottom end of the indoor heat exchanger 3, and an upper axial flow fan 21 rotating in two directions is arranged between the upper air outlet 13 and the top end of the indoor heat exchanger 3; the indoor heat exchanger 3 is correspondingly arranged with the air inlet 12 between the lower air outlet 11 and the upper air outlet 13, so that the multiple air supply modes of the wrap-around air supply of the simultaneous up and down air supply of the cabinet air conditioner, the shower air supply of the full up air supply, and the carpet air supply of the full down air supply can be realized by controlling the rotation direction of the upper axial flow fan 21 and the lower axial flow fan 22, the user's comfort is improved, the air inlet area is significantly increased, and the air inlet volume and the air outlet volume are increased (in the full up air supply mode, the lower air outlet 11 and the air inlet 12 simultaneously supply air, and in the full down air supply mode, the upper air outlet 13 and the air inlet 12 simultaneously supply air), the air circulation in the temperature adjusting space is promoted, and the temperature of the temperature adjusting space is quickly adjusted.

[0045] In some embodiments, the height of the whole machine shell 1 is H, the height of the air inlet 12 is h, 0.45H≥h≥0.38H, and the air inlet 12 is in the air inlet heat exchange core plane coverage area of the indoor heat exchanger 3, so that the size of the indoor heat exchanger 3 can be designed to be relatively large, and the heat exchange area and the heat exchange effect are ensured.

[0046] In some embodiments, with the orientation of the cabinet air conditioner in use as a reference, the front-to-back thickness of the internal containing space 10 is greater than the left-to-right width, and correspondingly, the front-to-back thickness of the aforementioned whole machine shell 1 is greater than the left-to-right width. In the technical scheme, the front-to-back thickness direction of the internal containing space 10 corresponds to the direction of the air inlet side and the air outlet side of the indoor heat exchanger 3, so that the air flow of the air inlet 12 entering the indoor heat exchanger 3 for heat exchange can avoid too large and abrupt turning angle when flowing out of the air outlet side of the indoor heat exchanger 3, so as to reduce the air loss and the air flow noise, and at the same time, the air flow passing through the air inlet 12 and one of the upper air outlet 13 and the lower air outlet 11 can ensure smooth flow. In a preferred embodiment, the projection shape of the whole machine shell 1 and the internal containing space 10 is an oval shape in a horizontal plane, the long axis of the oval shape extends front-to-back, and the short axis extends left-to-right, so as to improve the overall appearance of the cabinet air conditioner.

[0047] For a more detailed understanding, see Figures 6 to 8As shown, since the upper axial flow fan 21 and the lower axial flow fan 22 in the present application are respectively above the top end and below the bottom end of the indoor heat exchanger 3, the distance to the upper air outlet 13 and the lower air outlet 11 is relatively closer, especially in the case of the overall height of the cabinet air conditioner being low, the distance of the two axial flow fans to the upper and lower air outlets is relatively closer, which leads to a larger negative pressure of the air supply flow in the central region of the air outlet when the upper air outlet 13 or the lower air outlet 11 is used as the air outlet, that is, the air supply outlet, thereby causing the air flow to be sucked back, reducing the air supply flow and the air supply volume (that is, the air outlet volume). In order to overcome the above-mentioned deficiencies, in some embodiments, an upper air duct 4 is provided in the top region of the internal accommodation space 10, the upper axial flow fan 21 is located between the upper air duct 4 and the indoor heat exchanger 3, and the upper air outlet 13 is correspondingly provided with the outer port (that is, the port of the upper air duct 4 closer to the upper air outlet 13, and the port away from the upper air outlet 13 is called the inner port) of the upper air duct 4. The central region of the upper air duct 4 is provided with a first vortex breaking structure 41, and the first vortex breaking structure 41 extends along the airflow guiding direction of the upper air duct 4. It can be understood that the central region of the above-mentioned upper air duct 4, that is, the region where the negative pressure is generated, is objectively the region corresponding to the axial direction of the fan shaft of the upper axial flow fan 21.

[0048] In the technical solution, by providing the first vortex breaking structure 41 in the central region of the upper air duct 4, the central negative pressure region of the upper air duct 4 is occupied, thereby ensuring that the airflow in the upper air duct 4 can be sent upwards around the first vortex breaking structure 41, effectively avoiding the occurrence of airflow backflow caused by the central negative pressure region of the upper air duct 4, and thereby ensuring the air supply volume and speed of the upper air outlet 13, and ensuring the rapid temperature adjustment when the upper air outlet 13 is used as the air supply outlet.

[0049] In some embodiments, the airflow guiding direction of the upper air duct 4 is the height direction, and the cross-sectional area of the first vortex breaking structure 41 increases from bottom to top, that is, the first vortex breaking structure 41 forms a gradually expanding structure along the flow direction of the air supply flow, which not only prevents airflow backflow, but also smoothly guides the air supply flow of the upper air outlet 13 from vertical air supply to horizontal air supply, reducing the air outlet loss of the upper air outlet 13.

[0050] In some embodiments, the cross section of the first vortex breaking structure 41 is elliptical, and the major axis of the elliptical shape extends forward and backward, and the minor axis extends left and right, which is consistent with the state of the elliptical internal accommodation space 10 described above, and the airflow guiding is smoother, preventing wind loss caused by sudden changes in flow cross section.

[0051] In some embodiments, the central axis cross section (the plane shown) of the upper air duct 4 on the left-right symmetry plane of the whole machine shell 1 is a hyperbola that satisfies the following formula: Figure 2 ​

[0052] wherein, 135≤a≤152, 102.5≤b≤104. For details, please refer to Figure 2 As shown in the figure, the origin O of the rectangular coordinate system corresponding to the curve is located at the midpoint of the central axis of the upper air duct 4.

[0053] In the technical solution, the air duct profile of the upper air duct 4 adopts the aforementioned hyperbolic curve, which can further reduce the probability of occurrence of the air flow backflow phenomenon of the upper air outlet 13 and can form more smooth guidance to the air supply flow. Test verification shows that when the a value and the b value are not within the aforementioned range, the elimination of the backflow phenomenon is weak or cannot be eliminated, and when the aforementioned range is deviated greatly, the flow field backflow phenomenon is even worse, and the test shows that the air volume is not improved or reduced.

[0054] In some embodiments, the maximum diameter of the upper air duct 4 is C, the major axis of the ellipse of the maximum cross section of the first vortex breaking structure is c1, and the minor axis is d1, 0.15C≤c1≤0.18C, 0.1C≤d1≤0.12C; the major axis of the ellipse of the minimum cross section of the first vortex breaking structure is c2, and the minor axis is d2, 0.06C≤c2≤0.08C, 0.04C≤d2≤0.06C. Test results show that within this parameter range, the air flow backflow phenomenon of the air outlet is weakened more effectively, and the air volume is improved more significantly.

[0055] In some embodiments, a lower air duct 5 is arranged in the bottom region of the internal accommodation space 10, the lower axial flow fan 22 is arranged between the lower air duct 5 and the indoor heat exchanger 3, and the lower air outlet 11 is arranged corresponding to the outer port of the lower air duct 5 (i.e., the port of the lower air duct 5 closer to the lower air outlet 11, and the port away from the lower air outlet 11 is called the inner port). The central region of the lower air duct 5 is provided with a second vortex breaking structure 51, and the second vortex breaking structure 51 extends along the air flow guiding direction of the lower air duct 5. It can be understood that the central region of the aforementioned lower air duct 5, i.e., the region where negative pressure is generated, is objectively the region corresponding to the axial direction of the fan shaft of the lower axial flow fan 22.

[0056] In the technical solution, the second vortex breaking structure 51 is arranged in the central region of the lower air duct 5, which occupies the central negative pressure region of the lower air duct 5, so as to ensure that the air flow in the lower air duct 5 can be sent to the lower region around the second vortex breaking structure 51, effectively avoiding the air flow backflow phenomenon caused by the central negative pressure region of the lower air duct 5, and further ensuring the air supply volume and speed of the lower air outlet 11, and ensuring the rapid temperature adjustment when the lower air outlet 11 is used as an air supply outlet.

[0057] In some embodiments, the airflow guiding direction of the lower air duct 5 is an arc direction from vertical roundness to horizontal roundness, and the cross-sectional area of the second vortex breaking structure 51 decreases from top to bottom, that is, the second vortex breaking structure 51 forms a tapered structure along the flow direction of the air supply airflow, which can prevent airflow backflow while reducing the outflow area of the air supply airflow of the lower air outlet 11, reducing the air outlet loss of the lower air outlet 11, and improving the air supply flow rate.

[0058] In some embodiments, the central axis cross section of the lower air duct 5 on the left-right symmetry plane of the whole machine shell 1 is a parabola conforming to the following formula:

[0059] y = px 2 wherein 0.0028 ≤ p ≤ 0.0031. Referring to FIG. 1, the origin O of the rectangular coordinate system corresponding to the curve is located at the midpoint of the lower edge of the lower air outlet 11. Figure 2

[0060] In the technical solution, the air duct profile of the lower air duct 5 adopts the aforementioned parabola, which can further reduce the probability of the occurrence of the airflow backflow phenomenon of the lower air outlet 11 and can guide the air supply airflow more smoothly.

[0061] In some embodiments, on the central axis cross section of the lower air duct 5 on the left-right symmetry plane of the whole machine shell 1, the inner port caliber of the lower air duct 5 is E, the outer port caliber is F, the cross section of the second vortex breaking structure 51 is circular, the radius of the largest cross section of the circular of the second vortex breaking structure 51 is 0.11E ≤ e ≤ 0.135E, and the radius of the smallest cross section of the circular of the second vortex breaking structure 51 is 0.04F ≤ f ≤ 0.055F. In a specific embodiment, the aforementioned related dimensions such as length, width, and radius are in mm.

[0062] The aforementioned first vortex breaking structure 41 and second vortex breaking structure 51 are integrally injection molded with the upper air duct 4 and the lower air duct 5.

[0063] According to the embodiments of the present application, a control method of the cabinet air conditioner is also provided, which comprises the following steps:

[0064] obtaining an air conditioner control instruction;

[0065] when the control instruction is the up-down simultaneous air supply mode, controlling the upper axial flow fan 21 to operate so that part of the airflow entering the internal accommodating space 10 through the air inlet 12 and the indoor heat exchanger 3 is sent out through the upper air outlet 13, and controlling the lower axial flow fan 22 to operate so that another part of the airflow entering the internal accommodating space 10 through the air inlet 12 and the indoor heat exchanger 3 is sent out through the lower air outlet 11, referring to FIG. 1.​Figure 3 As shown, when the air conditioner is running, the air flow enters from the air inlet 12 corresponding to the indoor heat exchanger 3, and after heat exchange in the indoor heat exchanger 3, enters the air cavity of the internal accommodating space 10, and then flows into the upper and lower axial flow fans 21 and 22 respectively, and is blown out from the upper and lower air outlets 13 and 11, realizing the up-and-down ring-shaped blowing; or,

[0066] When the control instruction is the full-up blowing mode, the upper axial flow fan 21 is controlled to operate so that the external air flow enters the internal accommodating space 10 through the lower air outlet 11 and the air inlet 12 and is blown out through the upper air outlet 13, and more preferably, the lower axial flow fan 22 is also controlled to operate so that the air flow enters the internal accommodating space 10 through the lower air outlet 11, as shown in FIG. 6. Figure 4 As shown, when the air conditioner is running, the air flow enters from the air inlet 12 at the rear side of the air conditioner, and after heat exchange in the indoor heat exchanger 3, enters the air cavity, is accelerated by the upper axial flow fan 21, and is blown out from the upper air outlet 13; at the same time, another part of the air flow enters from the lower air outlet 11, is accelerated by the lower axial flow fan 22, and after heat exchange in the air cavity and the indoor heat exchanger 3, the air flows out and converges to form two air flows of natural air and cold air, is accelerated again by the upper axial flow fan 21, and is blown out from the upper air outlet 13, realizing the full-up large air volume blowing mode in the refrigeration mode, promoting the large circulation of the indoor air flow, accelerating the heat exchange, and realizing the rapid cooling; or,

[0067] When the control instruction is the full-down blowing mode, the lower axial flow fan 22 is controlled to operate so that the external air flow enters the internal accommodating space 10 through the upper air outlet 13 and the air inlet 12 and is blown out through the lower air outlet 11, and more preferably, the upper axial flow fan 21 is also controlled to operate so that the air flow enters the internal accommodating space 10 through the upper air outlet 13, as shown in FIG. 7. Figure 5 As shown, when the air conditioner is running, the air flow enters from the air inlet 12 at the rear side of the air conditioner, and after heat exchange in the indoor heat exchanger 3, enters the air cavity, is accelerated by the upper axial flow fan 21, and is blown out from the upper air outlet 13; at the same time, another part of the air flow enters from the lower air outlet 11, is accelerated by the lower axial flow fan 22, and after heat exchange in the air cavity and the indoor heat exchanger 3, the air flows out and converges to form two air flows of natural air and cold air, is accelerated again by the upper axial flow fan 21, and is blown out from the upper air outlet 13, realizing the full-up large air volume blowing mode in the refrigeration mode, promoting the large circulation of the indoor air flow, accelerating the heat exchange, and realizing the rapid cooling; or,

[0068] It can be understood that the rotation direction of the upper and lower axial flow fans 21 and 22 is determined according to the driving direction of the air flow, for example, when the upper axial flow fan 21 needs to drive the air flow to be blown out upward through the upper air outlet 13, the rotation of the upper axial flow fan 21 is forward rotation, and when the upper axial flow fan 21 needs to drive the air flow to be sucked downward through the upper air outlet 13, the rotation is reverse rotation, and the same is true for the lower axial flow fan 22.

[0069] With reference to the drawings Figure 9 As shown in the drawings, after the optimization of the air duct parameters of the cabinet air conditioner in the present application, the large vortex zone of the upper and lower air outlets disappears, and the airflow backflow phenomenon (i.e. back suction) is weakened, which can effectively improve the back suction phenomenon of the air outlet, and the unique curve equation makes the airflow transition smooth and unobstructed, effectively improves the air supply volume, improves the noise quality during the operation of the air conditioner, and the reduced structure of the lower air outlet can effectively improve the airflow velocity of the air outlet, improve the air supply distance, intensify the indoor airflow circulation, and improve the indoor energy utilization rate; by setting the vortex breaking structure in the negative pressure zone in the middle of the air duct, the vortex zone in the middle of the air duct is broken, which can better guide the airflow outlet direction and reduce the flow loss.

[0070] Those skilled in the art can easily understand that the advantageous technical features of each mode described above can be freely combined and superimposed without conflict.

[0071] The above only describes the preferred embodiments of the present application and should not be used to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A cabinet type air conditioner, characterized by comprising: The application relates to a heat pump air conditioner, which comprises a whole machine shell (1), a lower air inlet (11), an air inlet (12) and an upper air inlet (13) arranged in sequence from low to high along the height direction of the whole machine shell (1), an internal containing space (10) in the whole machine shell (1), an upper axial flow fan (21), a lower axial flow fan (22) and an indoor heat exchanger (3) assembled in the internal containing space (10), wherein the indoor heat exchanger (3) is located on the inner side of the air inlet (12), the upper axial flow fan (21) is located between the upper air inlet (13) and the top end of the indoor heat exchanger (3), the lower axial flow fan (22) is located between the lower air inlet (11) and the bottom end of the indoor heat exchanger (3), and the upper axial flow fan (21) and the lower axial flow fan (22) are bidirectional rotation fans; an upper air duct (4) is arranged in the top area of the internal containing space (10), the upper axial flow fan (21) is located between the upper air duct (4) and the indoor heat exchanger (3), the upper air inlet (13) is arranged in correspondence with the outer port of the upper air duct (4), a first vortex breaking structure (41) is arranged in the central area of the upper air duct (4), the first vortex breaking structure (41) extends along the airflow guiding direction of the upper air duct (4), the airflow guiding direction of the upper air duct (4) is the height direction, the cross-sectional area of the first vortex breaking structure (41) becomes larger and larger from bottom to top, the cross section of the first vortex breaking structure (41) is an ellipse, the long axis of the ellipse extends forward and backward, and the short axis of the ellipse extends left and right, and the central axis section of the upper air duct (4) on the left-right symmetry plane of the whole machine shell (1) is a hyperbola conforming to the following formula: Wherein, 135<=a<=152, 102.5<=b<=104. The maximum diameter of the upper air duct (4) is C, the major axis of the ellipse of the maximum cross section of the first vortex breaking structure is c1, and the minor axis is d1, 0.15C≤c1≤0.18C, and 0.1C≤d1≤0.12C; the major axis of the ellipse of the minimum cross section of the first vortex breaking structure is c2, and the minor axis is d2, 0.06C≤c2≤0.08C, and 0.04C≤d2≤0.06C.

2. The cabinet-type air conditioner according to claim 1, wherein The height of the whole machine shell (1) is H, the height of the air inlet (12) is h, 0.45H≥h≥0.38H, and the air inlet (12) is in the air inlet heat exchange core plane coverage area of the indoor heat exchanger (3).

3. The cabinet-type air conditioner according to claim 2, wherein The lower air duct (5) is arranged in the bottom area of the internal containing space (10), the lower axial flow fan (22) is arranged between the lower air duct (5) and the indoor heat exchanger (3), the lower air outlet (11) is arranged corresponding to the outer port of the lower air duct (5), and the central area of the lower air duct (5) is provided with a second vortex breaking structure (51), and the second vortex breaking structure (51) extends along the airflow guiding direction of the lower air duct (5).

4. The cabinet-type air conditioner according to claim 3, wherein The airflow guiding direction of the lower air duct (5) is an arc direction from the vertically round transition to the horizontally front-back, and the cross-sectional area of the second vortex breaking structure (51) decreases from top to bottom.

5. The cabinet-type air conditioner according to claim 4, wherein The central axis section of the lower air duct (5) on the left-right symmetry plane of the whole machine shell (1) is a parabola conforming to the following formula: y = px 2 where 0.0028 ≤ p ≤ 0.0031.

6. The cabinet air conditioner according to claim 5, characterized in that: On the central axis section of the lower air duct (5) on the left-right symmetry plane of the whole machine shell (1), the inner port diameter of the lower air duct (5) is E, the outer port diameter is F, the cross section of the second vortex breaking structure (51) is circular, the maximum cross-sectional diameter of the second vortex breaking structure (51) is 0.11E≤e≤0.135E, and the minimum cross-sectional diameter of the second vortex breaking structure (51) is 0.04F≤f≤0.055F.

7. A control method of a cabinet-type air conditioner according to any one of claims 1 to 6, characterized by, The method comprises the following steps: Obtaining an air conditioner control instruction; When the control instruction is an up-down simultaneous air supply mode, controlling the upper axial flow fan (21) to operate so that part of the airflow entering the internal containing space (10) through the air inlet (12) and the indoor heat exchanger (3) is sent out through the upper air outlet (13), and controlling the lower axial flow fan (22) to operate so that another part of the airflow entering the internal containing space (10) through the air inlet (12) and the indoor heat exchanger (3) is sent out through the lower air outlet (11); or, When the control instruction is a full-up air supply mode, controlling the upper axial flow fan (21) to operate so that external airflow enters the internal containing space (10) through the lower air outlet (11) and the air inlet (12) and is sent out through the upper air outlet (13); or, When the control instruction is a full-down air supply mode, controlling the lower axial flow fan (22) to operate so that external airflow enters the internal containing space (10) through the upper air outlet (13) and the air inlet (12) and is sent out through the lower air outlet (11). When the control instruction is a full-down air supply mode, controlling the lower axial flow fan (22) to operate so that external airflow enters the internal containing space (10) through the upper air outlet (13) and the air inlet (12) and is sent out through the lower air outlet (11).

8. The control method according to claim 7, characterized in that, when the control instruction is full up air supply mode, the lower axial flow fan (22) is also controlled to operate so that air flows into the internal accommodation space (10) through the lower air outlet (11); or, when the control instruction is full down air supply mode, the upper axial flow fan (21) is also controlled to operate so that air flows into the internal accommodation space (10) through the upper air outlet (13).

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