Air conditioning cabinet and control method

Abstract

The present invention provides an air conditioner cabinet and a control method, the air conditioner cabinet comprises a shell, the shell has an upper air port and a lower air port; a heat exchanger, the heat exchanger is arranged in the shell and located between the upper air port and the lower air port, the heat exchanger divides the shell into an upper cavity and a lower cavity; a mixed flow fan part, at least one of the upper cavity and the lower cavity is provided with a mixed flow fan part, the mixed flow fan part can introduce the airflow outside the shell into the shell through the upper air port, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the lower air port, or the mixed flow fan part can introduce the airflow outside the shell into the shell through the lower air port, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the upper air port. Such an arrangement makes the temperature difference of airflow stratification in the longitudinal direction of the room smaller, effectively improves the energy utilization rate of the air conditioner cabinet, reduces the power consumption of the air conditioner cabinet, and improves the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner equipment, and in particular to an air conditioner cabinet and a control method thereof. Background Art

[0002] At present, vertical cabinet air conditioners mainly include square cabinets with upper air outlets, circular cabinets with long air outlets, and distributed air supply cabinets that discharge air from both top and bottom. Due to the characteristics of cold and hot air that cold air sinks and hot air floats, the problem of indoor air heat stratification will occur during cooling and heating air supply. Since the return air position of the cabinet air conditioner remains unchanged, the heat distribution will not change. The air conditioner exchanges heat according to the indoor temperature. The heat stratification problem of distributed air supply cabinets is relatively small, and the temperature difference between the upper and lower parts is small, but it still cannot overcome the problem of inefficient energy utilization caused by the characteristics of cold and hot air. Summary of the invention

[0003] The main purpose of the present invention is to provide an air conditioning cabinet and a control method to solve the problem of low energy utilization rate of air conditioning cabinets in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, an air conditioning cabinet is provided, comprising: a shell, the shell having an upper air port and a lower air port; a heat exchanger, the heat exchanger is arranged in the shell and is located between the upper air port and the lower air port, and the heat exchanger divides the shell into an upper cavity and a lower cavity; a mixed flow fan unit, at least one of the upper cavity and the lower cavity is provided with a mixed flow fan unit, the mixed flow fan unit can introduce the airflow outside the shell into the shell through the upper air port, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the lower air port, or the mixed flow fan unit can introduce the airflow outside the shell into the shell through the lower air port, perform heat exchange with the heat exchanger, and then discharge it outside the shell through the upper air port.

[0005] Furthermore, the air conditioning cabinet includes a first mixed flow fan assembly, which is arranged in the upper cavity and / or the lower cavity, and the first mixed flow fan assembly includes: a first air duct; a first mixed flow fan, which is arranged in the first end of the first air duct, the first end of the first air duct forms an air inlet section, and the second end of the first air duct forms an air outlet section.

[0006] Furthermore, the inner diameter from the first end of the first air duct to the second end of the first air duct is first gradually increased and then gradually decreased.

[0007] Further, the first mixed flow fan includes: a first hub; a first mixed flow blade, there are multiple first mixed flow blades, and the multiple first mixed flow blades are arranged at intervals along the circumference of the first hub; a first splitter blade, the first splitter blade is connected to the first hub, there are multiple first splitter blades, one first splitter blade is arranged between adjacent first mixed flow blades, and the length of the first splitter blade along the vertical direction is less than the length of the first mixed flow blade along the vertical direction.

[0008] Furthermore, the air conditioning cabinet includes a second mixed flow fan assembly, which is arranged in the upper cavity and / or the lower cavity, and the second mixed flow fan assembly includes: a second air duct; a second mixed flow fan, which is arranged in the first end of the second air duct, the first end of the second air duct forms an air outlet section, and the second end of the second air duct forms an air inlet section.

[0009] Further, the second air duct includes: a first component section, in which the second mixed flow fan is arranged in the first component section; a second component section, in which the first end of the second component section is connected to the first end of the first component section, and the second end of the first component section forms an outlet end; a third component section, in which the first end of the third component section is connected to the second end of the second component section, and the second end of the third component section forms an inlet end, and the inner diameter from the first end of the second component section to the second end of the second component section is gradually reduced, and / or the third component section is a columnar structure with equal diameter.

[0010] Furthermore, the second mixed flow fan includes: a second hub, which is arranged in the first component section; a second mixed flow blade, which is multiple and arranged at intervals along the circumference of the second hub; a second splitter blade, which is connected to the second hub, which is multiple and arranged, and a second splitter blade is arranged between adjacent second mixed flow blades, and the length of the second splitter blade along the vertical direction is less than the length of the second mixed flow blade along the vertical direction.

[0011] Further, the projected length of the second group of segments on the horizontal plane is smaller than the length between the farthest end of the outer edge of the second mixed flow blade and the minimum inner diameter of the second hub.

[0012] Furthermore, the air conditioning cabinet includes a first mixed flow fan assembly and a second mixed flow fan assembly, one of the first mixed flow fan assembly and the second mixed flow fan assembly is arranged in the upper cavity, and the other is arranged in the lower cavity.

[0013] Furthermore, the heat exchanger has a V-shaped structure, and part of the heat exchanger extends into the first mixed flow fan assembly, or part of the heat exchanger extends into the second mixed flow fan assembly.

[0014] Furthermore, the air conditioning cabinet also includes: a water receiving tray, the water receiving tray is connected to the shell, and the bottom of the heat exchanger is located in the water receiving tray.

[0015] Furthermore, the water receiving pan is an annular structure, and an upper cavity and a lower cavity are formed between the water receiving pan, the heat exchanger and the shell.

[0016] According to another aspect of the present invention, a method for controlling an air-conditioning cabinet is provided, and the method is used to control the above-mentioned air-conditioning cabinet, and the method comprises the following steps: when the cooling mode is selected by the controller of the air-conditioning cabinet, the first mixed flow fan component sucks the external air flow from the lower air port into the shell body for heat exchange with the heat exchanger, and the second mixed flow fan component blows the sucked air flow out of the shell body from the upper air port; when the controller selects the heating mode, the second mixed flow fan component sucks the external air flow from the upper air port into the shell body for heat exchange with the heat exchanger, and the A mixed flow fan assembly blows the sucked air out of the shell from the lower air port, or, when the cooling mode is selected through the controller of the air-conditioning cabinet, the second mixed flow fan assembly sucks the external air from the lower air port into the shell for heat exchange with the heat exchanger, and then the first mixed flow fan assembly blows the sucked air out of the shell from the upper air port; when the controller selects the heating mode, the first mixed flow fan assembly sucks the external air from the upper air port into the shell for heat exchange with the heat exchanger, and then the second mixed flow fan assembly blows the sucked air out of the shell from the lower air port.

[0017] Furthermore, the air conditioning cabinet also includes an air supply mode, in which the mixed flow fan unit can introduce the airflow outside the shell into the shell through the upper air port and then discharge it outside the shell through the lower air port, or the mixed flow fan unit can introduce the airflow outside the shell into the shell through the lower air port and then discharge it outside the shell through the upper air port; wherein, in the air supply mode, the heat exchanger is in a non-working state.

[0018] By applying the technical solution of the present invention, by arranging a mixed flow fan unit in at least one of the upper cavity and the lower cavity, the air-conditioning cabinet can realize a heat exchange mode of upper air inlet for air intake and lower air outlet for air outlet, or upper air outlet for air outlet and lower air inlet for air intake. In particular, the air-conditioning cabinet can select the mode of upper air inlet for air intake and lower air outlet for air outlet according to the heating mode, and can also select the mode of upper air outlet for air outlet and lower air inlet for air intake according to the cooling mode. This arrangement makes the temperature difference of air flow stratification in the longitudinal direction of the room smaller, effectively improves the energy utilization rate of the air-conditioning cabinet, reduces the power consumption of the air-conditioning cabinet, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic structural diagram of a first embodiment of a first mixed flow fan assembly according to the present invention is shown;

[0021] Figure 2 A schematic structural diagram of a second embodiment of a first mixed flow fan assembly according to the present invention is shown;

[0022] Figure 3 A schematic structural diagram of a first embodiment of a first mixed flow fan according to the present invention is shown;

[0023] Figure 4 It shows a structural schematic diagram of a second embodiment of the first mixed flow fan according to the present invention;

[0024] Figure 5 A schematic structural diagram of a third embodiment of the first mixed flow fan according to the present invention is shown;

[0025] Figure 6 A schematic structural diagram of a first embodiment of a second mixed flow fan assembly according to the present invention is shown;

[0026] Figure 7 A schematic structural diagram of a second embodiment of a second mixed flow fan assembly according to the present invention is shown;

[0027] Figure 8 A schematic structural diagram of an embodiment of a second mixed flow fan according to the present invention is shown;

[0028] Fig. 9 It shows a structural schematic diagram of a first embodiment of an air conditioning cabinet according to the present invention;

[0029] Fig.10 It shows a structural schematic diagram of a second embodiment of an air conditioning cabinet according to the present invention;

[0030] Fig.11 A schematic structural diagram of a third embodiment of an air conditioning cabinet according to the present invention is shown;

[0031] Fig.12 A schematic structural diagram of a fourth embodiment of an air conditioning cabinet according to the present invention is shown;

[0032] Fig.13 A schematic structural diagram of a fifth embodiment of an air conditioning cabinet according to the present invention is shown;

[0033] Fig.14 A cross-sectional structural schematic diagram of a sixth embodiment of an air conditioning cabinet according to the present invention is shown;

[0034] Fig.15 A cross-sectional structural schematic diagram of a seventh embodiment of an air conditioning cabinet according to the present invention is shown.

[0035] The above drawings include the following reference numerals:

[0036] 10. Shell; 11. Upper air outlet; 12. Lower air outlet; 13. Upper cavity; 14. Lower cavity;

[0037] 20. Heat exchanger;

[0038] 30. a first mixed flow fan assembly; 31. a first air duct;

[0039] 32. a first mixed flow fan; 321. a first hub; 322. a first mixed flow blade; 323. a first splitter blade;

[0040] 40. A second mixed flow fan assembly;

[0041] 411, first group of paragraphs; 412, second group of paragraphs; 413, third group of paragraphs;

[0042] 42. a second mixed flow fan; 421. a second hub; 422. a second mixed flow blade; 423. a second splitter blade;

[0043] 50. Water tray. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0048] Combination Figures 1 to 15 As shown, according to an embodiment of the present invention, an air conditioning cabinet is provided.

[0049] Specifically, the air conditioner cabinet includes a housing 10, a heat exchanger 20 and a mixed flow fan unit. The housing 10 has an upper air port 11 and a lower air port 12; the heat exchanger 20 is arranged in the housing 10 and located between the upper air port 11 and the lower air port 12, and the heat exchanger 20 divides the housing 10 into an upper cavity 13 and a lower cavity 14; at least one of the upper cavity 13 and the lower cavity 14 is provided with a mixed flow fan unit, and the mixed flow fan unit can introduce the airflow outside the housing 10 into the housing 10 through the upper air port 11, perform heat exchange with the heat exchanger 20, and then discharge it outside the housing 10 through the lower air port 12. The mixed flow fan unit can also introduce the airflow outside the housing 10 into the housing 10 through the lower air port 12, perform heat exchange with the heat exchanger 20, and then discharge it outside the housing 10 through the upper air port 11.

[0050] In this embodiment, by providing a mixed flow fan unit in at least one of the upper cavity and the lower cavity, the air-conditioning cabinet can realize a heat exchange mode of upper air inlet for air intake and lower air outlet for air outlet, or upper air outlet for air outlet and lower air inlet for air intake. In particular, the air-conditioning cabinet can select the mode of upper air inlet for air intake and lower air outlet for air outlet according to the heating mode, and can also select the mode of upper air outlet for air outlet and lower air inlet for air intake according to the cooling mode. This arrangement makes the temperature difference of air flow stratification in the longitudinal direction of the room smaller, effectively improves the energy utilization rate of the air-conditioning cabinet, reduces the power consumption of the air-conditioning cabinet, and improves the user experience.

[0051] The air conditioning cabinet includes a first mixed flow fan assembly 30. The first mixed flow fan assembly 30 is arranged in at least one of the upper cavity 13 and the lower cavity 14, and the first mixed flow fan assembly 30 includes a first air duct 31 and a first mixed flow fan 32. The first mixed flow fan 32 is arranged in the first end of the first air duct 31, the first end of the first air duct 31 forms an air inlet section, and the second end of the first air duct 31 forms an air outlet section. When the first mixed flow fan assembly 30 is arranged in both the upper cavity 13 and the lower cavity 14, an air duct reversing device can be arranged in the air duct, and the air inlet and return air modes can be changed by the air duct reversing function.

[0052] The inner diameter from the first end of the first air duct 31 to the second end of the first air duct 31 is gradually increased and then gradually decreased. This arrangement can improve the efficiency of air inlet and outlet of the air duct.

[0053] Further, the first mixed flow fan 32 includes a first hub 321, a first mixed flow blade 322 and a first splitter blade 323. There are multiple first mixed flow blades 322, and the multiple first mixed flow blades 322 are arranged at intervals along the circumference of the first hub 321. The first splitter blade 323 is connected to the first hub 321, there are multiple first splitter blades 323, one first splitter blade 323 is arranged between adjacent first mixed flow blades 322, and the length of the first splitter blade 323 along the vertical direction is less than the length of the first mixed flow blade 322 along the vertical direction. Such an arrangement can improve the performance of the first mixed flow fan 32.

[0054] The air conditioning cabinet includes a second mixed flow fan assembly 40. The second mixed flow fan assembly 40 is arranged in at least one of the upper cavity 13 and the lower cavity 14. The second mixed flow fan assembly 40 includes a second air duct and a second mixed flow fan 42. The second mixed flow fan 42 is arranged in the first end of the second air duct, the first end of the second air duct forms an air outlet section, and the second end of the second air duct forms an air inlet section. Among them, when the second mixed flow fan assembly 40 is arranged in both the upper cavity 13 and the lower cavity 14, an air duct reversing device can be arranged in the air duct, and the air intake and return air modes are changed by the effect of the air duct reversing.

[0055] like Figure 6 and Figure 7 As shown, the second air duct includes a first component section 411, a second component section 412 and a third component section 413. The second mixed flow fan 42 is arranged in the first component section 411. The first end of the second component section 412 is connected to the first end of the first component section 411. The second end of the first component section 411 forms an outlet end. The first end of the third component section 413 is connected to the second end of the second component section 412. The second end of the third component section 413 forms an inlet end. The inner diameter from the first end of the second component section 412 to the second end of the second component section 412 is gradually reduced. Alternatively, the third component section 413 can also be set as a columnar structure of equal diameter. This arrangement enables one end of the second air duct to form an outlet end and the other end to form an inlet end.

[0056] The structure of the second mixed flow fan 42 can be set to be the same as that of the first mixed flow fan 32. Specifically, Figure 7 and Figure 8As shown, the second mixed flow fan 42 includes a second hub 421, a second mixed flow blade 422 and a second splitter blade 423. The second hub 421 is disposed in the first assembly section 411. There are a plurality of second mixed flow blades 422, and the plurality of second mixed flow blades 422 are disposed at intervals along the circumference of the second hub 421. The second splitter blade 423 is connected to the second hub 421, and there are a plurality of second splitter blades 423, one second splitter blade 423 is disposed between adjacent second mixed flow blades 422, and the length of the second splitter blade 423 along the vertical direction is less than the length of the second mixed flow blade 422 along the vertical direction.

[0057] The projected length of the second group segment 412 on the horizontal plane is less than the length between the farthest end of the outer edge of the second mixed flow blade 422 and the minimum inner diameter of the second hub 421. This arrangement can further enhance the air suction capacity of the inlet end of the second mixed flow fan assembly 40.

[0058] The air conditioning cabinet includes a first mixed flow fan assembly 30 and a second mixed flow fan assembly 40. One of the first mixed flow fan assembly 30 and the second mixed flow fan assembly 40 is disposed in the upper cavity 13, and the other is disposed in the lower cavity 14. Fig.14 As shown, the second mixed flow fan assembly 40 is disposed in the upper cavity 13, and the first mixed flow fan assembly 30 is disposed in the lower cavity 14. Fig.15 As shown, the first mixed flow fan assembly 30 is arranged in the upper cavity 13, and the second mixed flow fan assembly 40 is arranged in the lower cavity 14. The use of two different mixed flow fan assemblies can improve the air intake efficiency and air outlet efficiency of the air conditioning cabinet, and improve the user experience. Each fan arrangement can achieve two return air modes of upper air inlet air intake and lower air outlet air outlet, or upper air outlet air outlet and lower air outlet air intake. The air conditioning cabinet can select the corresponding return air mode according to the corresponding heat exchange mode.

[0059] Preferably, the heat exchanger 20 is in a V-shaped structure, and a portion of the heat exchanger 20 extends into the first mixed flow fan assembly 30. Alternatively, a portion of the heat exchanger 20 extends into the second mixed flow fan assembly 40.

[0060] The air conditioner cabinet also includes a water receiving pan 50. The water receiving pan 50 is connected to the housing 10, and the bottom of the heat exchanger 20 is located in the water receiving pan 50. The water receiving pan 50 is an annular structure. The water receiving pan 50, the heat exchanger 20 and the housing 10 are surrounded by an upper cavity 13 and a lower cavity 14.

[0061] Specifically, the air conditioner cabinet adopting this structure, based on the new mixed flow fan blade and taking advantage of the effect of different air ducts, arranges the upper and lower double-stage fans to increase the upper and lower convection heat exchange effect and improve the overall indoor heat exchange operation effect. The newly designed mixed flow fan blade has different air outlet effects when matched with different air ducts, and innovatively arranges the upper and lower double-stage fans to enhance the overall internal air convection effect, improve indoor air circulation, and strengthen the overall energy saving and consumption reduction advantages brought by the upper and lower convection.

[0062] The fan blades currently used in air conditioners include centrifugal fan blades, crossflow fan blades, and axial flow fan blades. The three fan blades are different. Centrifugal fan blades can change the direction of the air in and out from the axial direction to the radial direction by 90 degrees. Crossflow fan blades can achieve radial air in and out, and axial flow can achieve axial air in and out. Different fan blade systems can meet the needs of different air conditioner products, and different fan blades need to be matched with different air ducts to achieve concentrated air outflow.

[0063] The traditional mixed flow fan blade includes three parts: the fan hub, the fan blade shape and the fan blade outer ring. Its main features are that the fan blade width is small, the outlet angle is tilted upward, and the degree of blade distortion varies greatly according to the inlet and outlet of the hub, so as to meet the requirements of air intake from the lower air inlet and air outlet from the upper air outlet. The mixed flow fan blade of the present application is characterized by eliminating the outer closed ring of the mixed flow fan blade, increasing the fan blade width, reducing the degree of distortion, and adding a splitter blade between the two large blades.

[0064] like Figures 1 to 8 As shown, there are two types of air ducts. The upper air outlet type air duct is a drum-shaped air duct (that is, the inner diameter of the air duct gradually increases and then gradually decreases). The mixed flow fan blades are placed at the lower end of the drum. When the fan blades rotate, the air can be sucked in from the lower air inlet, sent upward along the side wall of the drum, and then sent out to the upper outlet. The lower air outlet duct is based on the upper air outlet duct, and is changed to a reduction structure (the second component segment) at the upper end. The characteristic of the reduction is that the position of the reduction is between the maximum diameter of the upper end of the fan blade width and the minimum diameter to the hub, preferably in the middle between the maximum diameter of the upper end of the fan blade width and the minimum diameter to the hub. The effect that can be achieved is that the blade shape of the mixed flow fan blade is similar to that of the centrifugal fan blade, which has the effect of radial air supply. When the upper end air duct opening is changed to a reduction, the pressure of the air supply to the upper end is increased, and the fan blades rotate to produce more centrifugal effect, supplying air radially, thereby achieving air outlet to the lower end of the air duct, thereby forming a low pressure in the middle position of the air duct, and the effect of air intake from the upper end air outlet can be achieved.

[0065] The air conditioner cabinet can have both upper air inlet and lower air outlet and lower air inlet and upper air outlet modes, and the appearance of the shell is not limited to round or square cabinets. By utilizing the characteristics of the mixed flow fan duct, in order to enhance the overall air outlet effect, an innovative upper and lower double-stage mixed flow solution is arranged to increase the air circulation effect inside the overall shell. Fig.14As shown in the figure, when the lower end duct is set as a drum-shaped duct and the upper end duct is set as a constricted duct, the lower duct can be ventilated from the upper end of the duct through the lower air intake, pass through the evaporator for heat exchange, and then be sucked in from the lower constricted end of the constricted duct, and then sent out from the upper air intake after being collected from the upper end, thus completing the lower air intake and upper air outlet two-stage mixed flow to strengthen the overall internal operation plan. Fig.15 As shown, the two-stage mixed flow scheme of upper air inlet and lower air outlet to enhance the overall internal operation is exactly the opposite of the former. The evaporators of the two remain unchanged, and the upper air duct on the head is set as a drum-shaped air duct with the outlet facing downward. The mixed flow fan draws air from the upper air outlet, passes through the evaporator for heat exchange, draws air in from the upper contraction of the lower air duct at the bottom, and then sends air out from the lower air outlet, completing the overall operation mode.

[0066] According to another embodiment of the present application, a method for controlling an air conditioning cabinet is provided. The method is used to control the air conditioning cabinet in the above embodiment, and the method includes the following steps: when the cooling mode is selected by the controller of the air conditioning cabinet, the first mixed flow fan assembly 30 sucks the external airflow from the lower air port 12 into the housing 10 for heat exchange with the heat exchanger 20, and then the second mixed flow fan assembly 40 blows the sucked airflow out of the housing 10 from the upper air port 11; when the controller selects the heating mode, the second mixed flow fan assembly 40 sucks the external airflow from the upper air port 11 into the housing 10 for heat exchange with the heat exchanger 20, and then the first mixed flow fan assembly 30 blows the sucked airflow out of the housing 10 from the lower air port 12; The air is blown out of the shell 10 through the air outlet 12, or, when the cooling mode is selected through the controller of the air-conditioning cabinet, the second mixed flow fan assembly 40 draws the external air flow from the lower air outlet 12 into the shell 10 for heat exchange with the heat exchanger 20, and then the first mixed flow fan assembly 30 blows the sucked air flow out of the shell 10 through the upper air outlet 11. When the controller selects the heating mode, the first mixed flow fan assembly 30 draws the external air flow from the upper air outlet 11 into the shell 10 for heat exchange with the heat exchanger 20, and then the second mixed flow fan assembly 40 blows the sucked air flow out of the shell 10 through the lower air outlet 12.

[0067] Furthermore, the air conditioning cabinet also includes an air supply mode, in which the mixed flow fan unit can introduce the airflow outside the shell 10 into the shell 10 through the upper air port 11, and then discharge it outside the shell 10 through the lower air port 12, or the mixed flow fan unit can introduce the airflow outside the shell 10 into the shell 10 through the lower air port 12, and then discharge it outside the shell 10 through the upper air port 11; wherein, in the air supply mode, the heat exchanger 20 is in a non-working state, that is, the heat exchanger 20 does not perform heat exchange operations.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0069] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0070] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air conditioning cabinet, It is characterized in that include: A housing (10), wherein the housing (10) has an upper air outlet (11) and a lower air outlet (12); a heat exchanger (20), the heat exchanger (20) being arranged in the shell (10) and located between the upper air port (11) and the lower air port (12), the heat exchanger (20) dividing the shell (10) into an upper cavity (13) and a lower cavity (14); a mixed flow fan unit, wherein at least one of the upper cavity (13) and the lower cavity (14) is provided with the mixed flow fan unit, and the mixed flow fan unit can introduce the airflow outside the shell (10) through the upper air port (11) into the shell (10), perform heat exchange with the heat exchanger (20), and then discharge the airflow outside the shell (10) through the lower air port (12); or the mixed flow fan unit can introduce the airflow outside the shell (10) through the lower air port (12) into the shell (10), perform heat exchange with the heat exchanger (20), and then discharge the airflow outside the shell (10) through the upper air port (11); The mixed flow fan section comprises a second mixed flow fan assembly (40), the second mixed flow fan assembly (40) being arranged in the upper cavity (13) and / or the lower cavity (14), the second mixed flow fan assembly (40) comprising: Second air duct; a second mixed flow fan (42), the second mixed flow fan (42) being arranged in a first end of the second air duct, the first end of the second air duct forming an air outlet section, and the second end of the second air duct forming an air inlet section; The second air duct comprises: A first assembly section (411), wherein the second mixed flow fan (42) is arranged in the first assembly section (411); a second component segment (412), wherein a first end of the second component segment (412) is connected to a first end of the first component segment (411), and a second end of the first component segment (411) forms an outlet end; a third component segment (413), wherein the first end of the third component segment (413) is connected to the second end of the second component segment (412), and the second end of the third component segment (413) forms an inlet end; and the inner diameter from the first end of the second component segment (412) to the second end of the second component segment (412) is gradually reduced; The second mixed flow fan (42) comprises: A second hub (421) is disposed in the first set of segments (411); a second mixed flow blade (422), wherein the second mixed flow blade (422) is in plurality, and the plurality of second mixed flow blades (422) are arranged at intervals along the circumference of the second hub (421); A second splitter blade (423), the second splitter blade (423) being connected to the second hub (421), the second splitter blade (423) being multiple, one second splitter blade (423) being arranged between adjacent second mixed flow blades (422), the length of the second splitter blade (423) along the vertical direction being shorter than the length of the second mixed flow blade (422) along the vertical direction.

2. The air conditioning cabinet according to claim 1, It is characterized in that The third group of segments (413) is a columnar structure with equal diameter.

3. The air conditioning cabinet according to claim 1, It is characterized in that The mixed flow fan section comprises a first mixed flow fan assembly (30), the first mixed flow fan assembly (30) being arranged in the upper cavity (13) and / or the lower cavity (14), the first mixed flow fan assembly (30) comprising: First air duct (31); A first mixed flow fan (32), wherein the first mixed flow fan (32) is arranged in a first end of the first air duct (31), the first end of the first air duct (31) forms an air inlet section, and the second end of the first air duct (31) forms an air outlet section.

4. The air conditioning cabinet according to claim 3, It is characterized in that The inner diameter from the first end of the first air duct (31) to the second end of the first air duct (31) is first gradually increased and then gradually decreased.

5. The air conditioning cabinet according to claim 3, It is characterized in that The first mixed flow fan (32) comprises: first hub (321); a first mixed flow blade (322), wherein the first mixed flow blade (322) is in plurality, and the plurality of first mixed flow blades (322) are arranged at intervals along the circumference of the first hub (321); A first splitter blade (323), the first splitter blade (323) being connected to the first hub (321), the first splitter blade (323) being multiple, one first splitter blade (323) being arranged between adjacent first mixed flow blades (322), and the length of the first splitter blade (323) along the vertical direction being shorter than the length of the first mixed flow blade (322) along the vertical direction.

6. The air conditioning cabinet according to claim 1, It is characterized in that The projected length of the second group of segments (412) on the horizontal plane is less than the length between the farthest end of the outer edge of the second mixed flow blade (422) and the minimum inner diameter of the second hub (421).

7. The air conditioning cabinet according to claim 1, It is characterized in that The air conditioning cabinet comprises a first mixed flow fan assembly (30) and a second mixed flow fan assembly (40); one of the first mixed flow fan assembly (30) and the second mixed flow fan assembly (40) is arranged in the upper cavity (13), and the other is arranged in the lower cavity (14).

8. The air conditioning cabinet according to claim 7, It is characterized in that The heat exchanger (20) has a V-shaped structure, and a portion of the heat exchanger (20) extends into the first mixed flow fan assembly (30), or a portion of the heat exchanger (20) extends into the second mixed flow fan assembly (40).

9. The air conditioning cabinet according to claim 1, It is characterized in that The air conditioning cabinet also includes: A water receiving tray (50), the water receiving tray (50) is connected to the shell (10), and the bottom of the heat exchanger (20) is located in the water receiving tray (50).

10. The air conditioning cabinet according to claim 9, It is characterized in that The water receiving tray (50) is an annular structure, and the water receiving tray (50), the heat exchanger (20) and the shell (10) are surrounded to form the upper cavity (13) and the lower cavity (14).

11. A method for controlling an air conditioning cabinet, the method being used to control the air conditioning cabinet according to any one of claims 1 to 10, It is characterized in that The method comprises the following steps: When the cooling mode is selected by the controller of the air-conditioning cabinet, the first mixed flow fan assembly (30) draws external air from the lower air port (12) into the shell (10) for heat exchange with the heat exchanger (20), and then the second mixed flow fan assembly (40) blows the sucked air out of the shell (10) from the upper air port (11); when the heating mode is selected by the controller, the second mixed flow fan assembly (40) draws external air from the upper air port (11) into the shell (10) for heat exchange with the heat exchanger (20), and then the first mixed flow fan assembly (30) blows the sucked air out of the shell (10) from the lower air port (12); or, When the cooling mode is selected by the controller of the air-conditioning cabinet, the second mixed flow fan assembly (40) draws external air from the lower air port (12) into the shell (10) for heat exchange with the heat exchanger (20), and then the first mixed flow fan assembly (30) blows the sucked air out of the shell (10) from the upper air port (11); when the controller selects the heating mode, the first mixed flow fan assembly (30) draws external air from the upper air port (11) into the shell (10) for heat exchange with the heat exchanger (20), and then the second mixed flow fan assembly (40) blows the sucked air out of the shell (10) from the lower air port (12).

12. The method according to claim 11, It is characterized in that The air conditioning cabinet further comprises an air supply mode, wherein the mixed flow fan unit can introduce the airflow outside the shell (10) into the shell (10) through the upper air port (11), and then discharge the airflow outside the shell (10) through the lower air port (12); or the mixed flow fan unit can introduce the airflow outside the shell (10) into the shell (10) through the lower air port (12), and then discharge the airflow outside the shell (10) through the upper air port (11); Wherein, in the air supply mode, the heat exchanger (20) is in a non-operating state.

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