Air conditioning cabinet and control method

Abstract

The present invention provides an air conditioner cabinet and a control method, comprising a housing, a heat exchanger, the heat exchanger is arranged in the housing, the heat exchanger is a hollow structure, the hollow structure forms a first channel, at least part of the heat exchanger is arranged at a distance from the housing to form a second air duct; a fan unit, the fan unit is arranged in the housing, the fan unit has an air inlet side and an air outlet side; a variable air duct, the first end of the variable air duct is connected to the first channel, the second end of the variable air duct is arranged adjacent to the fan unit, and the second end of the variable air duct can be selectively connected to the air inlet side or the air outlet side to change the air flow direction between the upper air port and the lower air port. This arrangement makes the stratified temperature difference of the indoor air flow in the longitudinal direction smaller, effectively improves the energy utilization rate 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 of air conditioners in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air-conditioning cabinet, comprising: a shell, the shell having an upper air outlet and a lower air outlet; a heat exchanger, the heat exchanger is arranged in the shell, the heat exchanger is a hollow structure, the hollow structure forms a first channel, at least a part of the heat exchanger is arranged at a distance from the shell to form a second air duct; a fan unit, the fan unit is arranged in the shell, the fan unit has an air inlet side and an air outlet side; a variable air duct, the first end of the variable air duct is connected to the first channel, the second end of the variable air duct is arranged adjacent to the fan unit, and the second end of the variable air duct can be selectively connected to the air inlet side or the air outlet side to change the direction of the airflow between the upper air outlet and the lower air outlet.

[0005] Furthermore, the second end of the variable air duct has a first conduction position and a second conduction position. When the second end of the variable air duct is located at the first conduction position, the second end of the variable air duct is connected to the air outlet side, and a third air duct is formed between the air inlet side and the downwind port.

[0006] Furthermore, the fan unit can suck the airflow outside the shell into the third air duct through the lower air port, enter the first channel through the variable air duct, pass through the side wall of the heat exchanger to exchange heat with the heat exchanger, and then flow into the second air duct, and then be discharged to the outside of the shell through the upper air port.

[0007] Further, when the second end of the variable air duct is located at the second conducting position, the second end of the variable air duct is connected to the air inlet side, and a fourth air duct is formed between the air outlet side and the downwind port.

[0008] Furthermore, the fan unit can suck the airflow outside the shell into the second air duct through the upper air port, pass through the side wall of the heat exchanger to exchange heat with the heat exchanger, flow into the first channel, and then enter the fan unit through the variable air duct and be discharged from the lower air port.

[0009] Further, the variable air duct includes: a first component segment, a first end of the first component segment is connected to the first channel, and a second end of the first component segment is arranged away from the first channel; a second component segment, a first end of the second component segment is movably connected to the second end of the first component segment, and the second end of the second component segment can be selectively located at the first conduction position or the second conduction position.

[0010] Furthermore, the variable air duct also includes: a switching mechanism, which is movably connected to the second component segment, and the switching mechanism has a first switching position and a second switching position. When the switching mechanism is located at the first switching position, an air outlet channel connected to the air outlet side is enclosed between the switching mechanism and the second component segment.

[0011] Furthermore, when the switching mechanism is located at the second switching position, an air inlet channel connected to the air inlet side is formed between the switching mechanism and the second component segment, and a fourth air duct connected to the downwind port is formed between the switching mechanism and the air outlet side and the shell.

[0012] Furthermore, the first component segment is a cylindrical structure, and the inner diameter from the first end of the first component segment to the second end of the first component segment is gradually increased.

[0013] Furthermore, the second component segment includes: an arc-shaped telescopic plate, a first end of the arc-shaped telescopic plate is slidably arranged with the first component segment, there are multiple arc-shaped telescopic plates, and the multiple arc-shaped telescopic plates are circumferentially arranged along the first component segment to form a sealed channel, each arc-shaped telescopic plate can be extended along a preset direction to the edge of the air inlet on the air inlet side and sealedly connected with the edge of the air inlet on the air inlet side, or each arc-shaped telescopic plate can be extended along a preset direction to the edge of the air outlet on the air outlet side and sealedly connected with the edge of the air outlet on the air outlet side.

[0014] Furthermore, the switching mechanism includes: a movable plate, a first end of the movable plate and a part of the arc-shaped telescopic plate are movably arranged, and there are multiple movable plates. Each movable plate can be extended in the vertical direction by a preset distance and then be located in a first switching position. At this time, each movable plate is sealed and connected with the edge of the air outlet on the air outlet side. Alternatively, the movable plate located in the first switching position is rotated toward the air inlet side by a preset angle and then is located in a second switching position. At this time, each movable plate is sealed and connected with the edge of the air inlet on the air inlet side.

[0015] Furthermore, the air conditioning cabinet includes: a water receiving pan, the water receiving pan is arranged in the shell and connected to the shell, the heat exchanger is connected to the water receiving pan, a through hole connected to the first channel is opened on the water receiving pan, and the water receiving pan is used to collect condensed water generated by the heat exchanger.

[0016] Furthermore, the fan unit is a centrifugal fan or a mixed flow fan.

[0017] According to another aspect of the 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 includes the following steps: when the cooling mode is selected through the controller of the air-conditioning cabinet, the second end of the variable air duct is located at a first conduction position, and the fan unit draws external air flow into the shell from the lower air port, performs heat exchange with the heat exchanger, and then discharges it outside the shell through the upper air port; when the heating mode is selected through the controller of the air-conditioning cabinet, the second end of the variable air duct is located at a second conduction position, and the fan unit draws external air flow into the shell from the upper air port, performs heat exchange with the heat exchanger, and then discharges it outside the shell through the lower air port.

[0018] Further, the air conditioner cabinet also includes an air supply mode. When the air supply mode is selected by the controller, the second end of the variable air duct is located at the first conduction position, and the fan unit sucks the external air flow into the shell from the lower air port and discharges it outside the shell through the upper air port. Alternatively, the second end of the variable air duct is located at the second conduction position, and the fan unit sucks the external air flow into the shell from the upper air port and discharges it outside the shell through the lower air port.

[0019] Among them, in the air supply mode, the heat exchanger is in a non-working state.

[0020] The technical solution of the present invention is applied, by setting a variable air duct inside the shell, and by controlling the variable air duct to be located at the air inlet side or the air outlet side of the fan unit, the flow direction of the air flow between the upper air outlet and the lower air outlet in the shell is changed, and then the shell can realize the mode of upper air outlet air intake and lower air outlet air outlet, or upper air outlet air outlet and lower air outlet air intake. This arrangement makes the stratified temperature difference of indoor air flow in the longitudinal direction smaller, effectively improves the energy utilization rate of the air conditioner cabinet, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 It shows a structural schematic diagram of a first embodiment of an air conditioning cabinet according to the present invention;

[0023] Figure 2 It shows a structural schematic diagram of a second embodiment of an air conditioning cabinet according to the present invention;

[0024] Figure 3 A schematic structural diagram of a third embodiment of an air conditioning cabinet according to the present invention is shown;

[0025] Figure 4 A schematic structural diagram of a fourth embodiment of an air conditioning cabinet according to the present invention is shown;

[0026] Figure 5 A schematic structural diagram of a fifth embodiment of an air conditioning cabinet according to the present invention is shown;

[0027] Figure 6 A cross-sectional structural schematic diagram of a sixth embodiment of an air conditioning cabinet according to the present invention is shown;

[0028] Figure 7 A cross-sectional structural schematic diagram of a seventh embodiment of an air conditioning cabinet according to the present invention is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Shell; 11. Upper air outlet; 12. Lower air outlet;

[0031] 20. heat exchanger; 21. first channel; 22. second air channel; 23. third air channel; 24. fourth air channel; 25. air outlet channel; 26. air inlet channel;

[0032] 30. Fan unit; 31. Air inlet side; 32. Air outlet side;

[0033] 40. variable air duct; 41. first component segment; 42. second component segment; 43. switching mechanism;

[0034] 50. water tray; 51. through hole;

[0035] 60. Top cover. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Combination Figures 1 to 7 As shown, according to a specific embodiment of the present invention, an air conditioning cabinet is provided.

[0041] Specifically, the air conditioning cabinet includes a housing 10, a heat exchanger 20, a fan unit 30 and a variable air duct 40. The housing 10 has an upper air outlet 11 and a lower air outlet 12. The heat exchanger 20 is arranged in the housing 10, and the heat exchanger 20 is a hollow structure, and the hollow structure forms a first channel 21. At least part of the heat exchanger 20 is arranged with a distance from the housing 10 to form a second air duct 22. The fan unit 30 is arranged in the housing 10, and the fan unit 30 has an air inlet side 31 and an air outlet side 32. The first end of the variable air duct 40 is connected to the first channel 21. The second end of the variable air duct 40 is arranged adjacent to the fan unit 30, and the second end of the variable air duct 40 can be selectively connected to the air inlet side 31 or the air outlet side 32 to change the airflow direction between the upper air outlet 11 and the lower air outlet 12.

[0042] In this embodiment, by setting a variable air duct inside the shell, and controlling the variable air duct to be located at the air inlet side or the air outlet side of the fan unit, the flow direction of the air flow between the upper air outlet and the lower air outlet in the shell is changed, so that the shell can achieve the mode of upper air outlet air intake and lower air outlet air outlet, or upper air outlet air outlet and lower air outlet air intake. This arrangement makes the stratified temperature difference of the indoor air flow in the longitudinal direction smaller, effectively improves the energy utilization rate of the air conditioner cabinet, and improves the user experience.

[0043] The second end of the variable air duct 40 has a first conduction position and a second conduction position. Figure 6 As shown, when the second end of the variable air duct 40 is located at the first conduction position, the second end of the variable air duct 40 is connected to the air outlet side 32, and a third air duct 23 is formed between the air inlet side 31 and the lower air port 12. The fan unit 30 can suck the airflow outside the housing 10 into the third air duct 23 through the lower air port 12, and then enter the first channel 21 through the variable air duct 40 and pass through the side wall of the heat exchanger 20 to perform heat exchange with the heat exchanger 20, and then flow into the second air duct 22, and then be discharged to the outside of the housing 10 through the upper air port 11. This air outlet mode can be selected as the cooling mode of the air conditioner cabinet. This setting can effectively utilize the cooling capacity generated by the air conditioner cabinet.

[0044] like Figure 7 As shown, when the second end of the variable air duct 40 is located at the second conduction position, the second end of the variable air duct 40 is connected to the air inlet side 31, and a fourth air duct 24 is formed between the air outlet side 32 and the lower air outlet 12. The fan unit 30 can suck the airflow outside the housing 10 into the second air duct 22 through the upper air outlet 11, pass through the side wall of the heat exchanger 20, perform heat exchange with the heat exchanger 20, flow into the first channel 21, and then enter the fan unit 30 through the variable air duct 40 and be discharged from the lower air outlet 12. This air outlet mode can be selected as the heating mode of the air conditioner cabinet. This setting can effectively utilize the heat generated by the air conditioner cabinet. Improve the energy utilization rate of the air conditioner cabinet.

[0045] Specifically, the variable air duct 40 includes a first component section 41 and a second component section 42. The first end of the first component section 41 is connected to the first channel 21. The second end of the first component section 41 is arranged away from the first channel 21. The first end of the second component section 42 is movably connected to the second end of the first component section 41, and the second end of the second component section 42 can be selectively located at the first conducting position or the second conducting position. Figure 6 As shown, the first component section 41 is a trumpet-shaped structure. The second component section 42 and the first component section 41 are arranged to form a sealed channel.

[0046] The variable air duct 40 further includes a switching mechanism 43. The switching mechanism 43 is movably connected to the second component section 42, and the switching mechanism 43 has a first switching position and a second switching position. Figure 6 As shown, when the switching mechanism 43 is located at the first switching position, the switching mechanism 43 and the second component section 42 are surrounded by an air outlet channel 25 that is connected to the air outlet side 32. This arrangement can improve the flexibility of the switching mechanism 43, so that by moving the second component section 42 and the switching mechanism 43 to simultaneously surround a sealed channel structure, the complexity of the structure of the switching mechanism and the second component section can be reduced, thereby improving the reliability of the switching mechanism and the second component section.

[0047] like Figure 7 As shown, when the switching mechanism 43 is in the second switching position, the switching mechanism 43 and the second component section 42 are surrounded by an air inlet channel 26 connected to the air inlet side 31. The switching mechanism 43 and the air outlet side 32 and the housing 10 are surrounded by a fourth air duct 24 connected to the lower air outlet 12. This arrangement can improve the reliability of the switching mechanism.

[0048] Among them, the first component section 41 is a cylindrical structure, and the inner diameter from the first end of the first component section 41 to the second end of the first component section 41 is gradually increased. The second component section 42 includes an arc-shaped telescopic plate, and the first end of the arc-shaped telescopic plate is slidably arranged with the first component section 41. There are multiple arc-shaped telescopic plates, and multiple arc-shaped telescopic plates are arranged circumferentially along the first component section 41 to enclose a sealed channel. Each arc-shaped telescopic plate can extend along a preset direction to the edge of the air inlet of the air inlet side 31 and be sealed and connected with the edge of the air inlet of the air inlet side 31. Each arc-shaped telescopic plate can also extend along a preset direction to the edge of the air outlet of the air outlet side 32 and be sealed and connected with the edge of the air outlet of the air outlet side 32. Such an arrangement can make the structure of the variable air duct 40 simpler and more reliable to use.

[0049] Furthermore, the switching mechanism 43 includes a movable plate. The first end of the movable plate is movably connected to a part of the arc-shaped telescopic plate. There are multiple movable plates, and each movable plate can be extended in the vertical direction by a preset distance and then be located at a first switching position. At this time, each movable plate is sealed and connected to the edge of the air outlet of the air outlet side 32. The movable plate located at the first switching position can also be rotated toward the air inlet side 31 by a preset angle and then be located at a second switching position. At this time, each movable plate is sealed and connected to the edge of the air inlet of the air inlet side 31.

[0050] In order to discharge the condensed water in the housing out of the housing in time, the air conditioner cabinet package is provided with a water receiving pan 50. The water receiving pan 50 is arranged in the housing 10 and connected to the housing 10. The heat exchanger 20 is connected to the water receiving pan 50, and a through hole 51 connected to the first channel 21 is provided on the water receiving pan 50. The water receiving pan 50 is used to collect the condensed water generated by the heat exchanger 20. Among them, the fan unit 30 is a centrifugal fan or a mixed flow fan.

[0051] Specifically, the use of this air-conditioning cabinet can realize the selection of comfortable air outlet function of up and down convection, optimize the distribution of indoor temperature field, and improve energy utilization efficiency. An air outlet is arranged on the upper and lower parts of the vertical cabinet air conditioner, and a centrifugal fan structure is set in the internal structure. The suction and exhaust characteristics of the centrifugal fan are utilized, and different air duct outlet modes of up and down convection are realized through the transformation of the internal mechanism, so as to realize up and down circulation convection in the cooling and heating mode. When cooling, air is discharged from the upper air outlet and returned from the lower air outlet. When heating, air is discharged from the lower air outlet and returned from the upper air outlet. Heat can be recycled and utilized according to the characteristics of cold and hot air, and then the operation mode of the whole machine can be adjusted to achieve energy saving and power saving. Among them, the heat exchanger is an evaporator.

[0052] The internal structure of the cabinet is mainly divided into centrifugal fan, air duct, water tray, evaporator, upper air outlet, lower air outlet, top cover and more than 60 parts. The operation of the product mainly relies on the changes in the inlet and outlet structure of the centrifugal fan to achieve two different modes of upper return air and lower return air. Figure 6 In the process, when the centrifugal fan outlet is connected to the ventilation channel in the middle of the evaporator, and the centrifugal fan inlet is open, the fan draws air in from the lower air outlet, sends air upward, and finally collects air to the upper air outlet through the evaporator for air delivery. When the outlet channel from the centrifugal fan outlet to the lower air outlet is opened, and the centrifugal fan inlet position is connected to the ventilation channel in the middle of the evaporator, the fan draws air from the middle channel of the evaporator, thereby realizing the reverse operation mode, with air entering from the upper air outlet, passing through the evaporator from all sides to the middle, and entering the air duct from the middle position of the water tray, and being driven by the fan to send air to the lower air outlet, thus achieving the purpose of downward air delivery.

[0053] According to another embodiment of the present application, 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 includes the following steps: when the cooling mode is selected through the controller of the air-conditioning cabinet, the second end of the variable air duct 40 is located at a first conduction position, and the fan unit 30 draws the external air flow into the shell 10 from the lower air port 12, performs heat exchange with the heat exchanger 20, and then discharges the external air flow to the outside of the shell 10 through the upper air port 11; when the heating mode is selected through the controller of the air-conditioning cabinet, the second end of the variable air duct 40 is located at a second conduction position, and the fan unit 30 draws the external air flow into the shell 10 from the upper air port 11, performs heat exchange with the heat exchanger 20, and then discharges the external air flow to the outside of the shell 10 through the lower air port 12.

[0054] Furthermore, the air conditioning cabinet also includes an air supply mode. When the air supply mode is selected by the controller, the second end of the variable air duct 40 is located at the first conduction position, and the fan unit 30 sucks the external air flow into the shell 10 from the lower air port 12, and then discharges it outside the shell 10 through the upper air port 11. Alternatively, the second end of the variable air duct 40 is located at the second conduction position, and the fan unit 30 sucks the external air flow into the shell 10 from the upper air port 11, and then discharges it outside the shell 10 through the lower air port 12. 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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, 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), the heat exchanger (20) being a hollow structure, the hollow structure forming a first channel (21), and at least a portion of the heat exchanger (20) being arranged at a distance from the shell (10) to form a second air duct (22); A fan unit (30), the fan unit (30) being arranged in the housing (10), the fan unit (30) having an air inlet side (31) and an air outlet side (32); A variable air duct (40), wherein a first end of the variable air duct (40) is connected to the first channel (21), a second end of the variable air duct (40) is arranged adjacent to the fan unit (30), and the second end of the variable air duct (40) can be selectively connected to the air inlet side (31) or the air outlet side (32) to change the air flow direction between the upper air outlet (11) and the lower air outlet (12).

2. The air conditioning cabinet according to claim 1, characterized in that: The second end of the variable air duct (40) has a first conduction position and a second conduction position. When the second end of the variable air duct (40) is located at the first conduction position, the second end of the variable air duct (40) is connected to the air outlet side (32), and a third air duct (23) is formed between the air inlet side (31) and the lower air outlet (12).

3. The air conditioning cabinet according to claim 2, characterized in that: The fan unit (30) can suck airflow outside the housing (10) into the third air duct (23) through the lower air port (12), then enter the first channel (21) through the variable air duct (40), pass through the side wall of the heat exchanger (20), perform heat exchange with the heat exchanger (20), flow into the second air duct (22), and then be discharged to the outside of the housing (10) through the upper air port (11).

4. The air conditioning cabinet according to claim 2, characterized in that: When the second end of the variable air duct (40) is located at the second conducting position, the second end of the variable air duct (40) is connected to the air inlet side (31), and a fourth air duct (24) is formed between the air outlet side (32) and the lower air port (12).

5. The air conditioning cabinet according to claim 4, characterized in that: The fan unit (30) can suck the airflow outside the housing (10) into the second air duct (22) through the upper air port (11), pass through the side wall of the heat exchanger (20), perform heat exchange with the heat exchanger (20), flow into the first channel (21), and then enter the fan unit (30) through the variable air duct (40) and be discharged from the lower air port (12).

6. The air conditioning cabinet according to claim 2, characterized in that: The variable air duct (40) comprises: a first component segment (41), wherein a first end of the first component segment (41) is connected to the first channel (21), and a second end of the first component segment (41) is arranged away from the first channel (21); A second component segment (42), wherein the first end of the second component segment (42) is movably connected to the second end of the first component segment (41), and the second end of the second component segment (42) can be selectively located at the first conducting position or the second conducting position.

7. The air conditioning cabinet according to claim 6, characterized in that: The variable air duct (40) further comprises: A switching mechanism (43), the switching mechanism (43) being movably connected to the second component segment (42), the switching mechanism (43) having a first switching position and a second switching position, and when the switching mechanism (43) is located at the first switching position, an air outlet channel (25) communicating with the air outlet side (32) is enclosed between the switching mechanism (43) and the second component segment (42).

8. The air conditioning cabinet according to claim 7, characterized in that: When the switching mechanism (43) is located at the second switching position, an air inlet passage (26) connected to the air inlet side (31) is formed between the switching mechanism (43) and the second component section (42), and a fourth air duct (24) connected to the lower air outlet (12) is formed between the switching mechanism (43), the air outlet side (32) and the shell (10).

9. The air conditioning cabinet according to claim 7, characterized in that: The first assembly segment (41) is a cylindrical structure, and the inner diameter is gradually increased from the first end of the first assembly segment (41) to the second end of the first assembly segment (41).

10. The air conditioning cabinet according to claim 9, characterized in that: The second set of segments (42) comprises: An arc-shaped telescopic plate, wherein the first end of the arc-shaped telescopic plate is slidably arranged with the first component segment (41), and there are a plurality of the arc-shaped telescopic plates, and the plurality of the arc-shaped telescopic plates are arranged circumferentially along the first component segment (41) to enclose a sealed channel, and each of the arc-shaped telescopic plates can extend along a preset direction to the edge of the air inlet of the air inlet side (31) and be sealedly connected with the edge of the air inlet of the air inlet side (31), or each of the arc-shaped telescopic plates can extend along a preset direction to the edge of the air outlet of the air outlet side (32) and be sealedly connected with the edge of the air outlet of the air outlet side (32).

11. The air conditioning cabinet according to claim 10, characterized in that: The switching mechanism (43) comprises: A movable plate, wherein the first end of the movable plate and a part of the arc-shaped telescopic plate are movably arranged, and there are multiple movable plates. Each movable plate can be extended in the vertical direction by a preset distance and then be located at the first switching position. At this time, each movable plate is sealed and connected to the edge of the air outlet on the air outlet side (32). Alternatively, the movable plate located at the first switching position is rotated toward the air inlet side (31) by a preset angle and then is located at the second switching position. At this time, each movable plate is sealed and connected to the edge of the air inlet on the air inlet side (31).

12. The air conditioning cabinet according to claim 1, characterized in that: The air conditioning cabinet comprises: A water receiving tray (50), the water receiving tray (50) being arranged in the shell (10) and connected to the shell (10), the heat exchanger (20) being connected to the water receiving tray (50), the water receiving tray (50) being provided with a through hole (51) connected to the first channel (21), and the water receiving tray (50) being used to collect condensed water generated by the heat exchanger (20).

13. The air conditioning cabinet according to claim 1, characterized in that: The fan unit (30) is a centrifugal fan or a mixed flow fan.

14. A method for controlling an air conditioning cabinet, the method being used to control the air conditioning cabinet according to any one of claims 2 to 11, characterized in that: The method comprises the following steps: When a cooling mode is selected through the controller of the air conditioning cabinet, the second end of the variable air duct (40) is located at the first conduction position, and the fan unit (30) draws external air from the lower air port (12) into the shell (10), exchanges heat with the heat exchanger (20), and then discharges the air outside the shell (10) through the upper air port (11); When a heating mode is selected through the controller of the air conditioning cabinet, the second end of the variable air duct (40) is located at the second conduction position, and the fan unit (30) draws external air from the upper air port (11) into the shell (10) to perform heat exchange with the heat exchanger (20), and then discharges the air out of the shell (10) through the lower air port (12).

15. The method according to claim 14, characterized in that The air conditioning cabinet further comprises an air supply mode, when the air supply mode is selected by the controller, the second end of the variable air duct (40) is located at the first conduction position, the fan unit (30) sucks external air into the shell (10) from the lower air port (12), and then discharges the external air to the outside of the shell (10) through the upper air port (11); or the second end of the variable air duct (40) is located at the second conduction position, the fan unit (30) sucks external air into the shell (10) from the upper air port (11), and then discharges the external air to the outside of the shell (10) through the lower air port (12); Wherein, in the air supply mode, the heat exchanger (20) is in a non-operating state.

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