CN210511922U - Cabinet air conditioner - Google Patents

Abstract

The utility model provides a cabinet air conditioner. The cabinet air conditioner comprises a shell, a heat exchanger, a first air duct switching mechanism, a second air duct switching mechanism and a mixed flow fan part. The heat exchanger sets up in the casing, and the heat exchanger is hollow structure, and hollow structure forms first wind channel. At least part of the outer surface of the heat exchanger is arranged at a distance from the inner wall of the housing to form a second air duct. The first air channel switching mechanism is arranged in the shell and connected with the first end of the heat exchanger. The second air duct switching mechanism is arranged in the shell and connected with the second end of the heat exchanger. A second air duct is formed between the second air duct switching mechanism and the first air duct switching mechanism. The mixed flow fan part is arranged in the shell and is positioned below the second air duct switching mechanism. The air outlet mode of the cabinet air conditioner with the structure can enable the temperature difference of air flow in the longitudinal direction to be small, effectively improves the utilization efficiency of energy of the cabinet air conditioner, and improves the use experience of users.

Description

Cabinet air conditioner

Technical Field

The utility model relates to an air conditioner equipment technical field particularly, relates to a cabinet air conditioner.

Background

The air conditioner of the vertical cabinet type air conditioner mainly has square upper air outlet cabinet machine, circular long air outlet cabinet machine, and the distributing type cabinet machine of supplying air of air-out from top to bottom simultaneously, sink because of air conditioning, the cold and hot air characteristic of steam come-up, when refrigeration, heat the air supply, can lead to the problem of indoor air heat layering, return air position because of the cabinet type air conditioner is unchangeable, so heat distribution can not change, the air conditioner carries out the heat transfer to indoor temperature, the heat layering problem of distributing type cabinet machine of supplying air is less relatively, the upper and lower temperature difference is less, but still can not overcome the energy utilization inefficiency problem that cold and hot air characteristic brought.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a cabinet air conditioner to solve the problem at the bottom of the refrigerating capacity utilization rate in the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a cabinet air conditioner, comprising: a housing; the heat exchanger is arranged in the shell, the heat exchanger is of a hollow structure, the hollow structure forms a first air duct, and at least part of the outer surface of the heat exchanger and the inner wall of the shell are arranged at a distance to form a second air duct; the first air channel switching mechanism is arranged in the shell and is connected with the first end of the heat exchanger; the second air channel switching mechanism is arranged in the shell and is connected with the second end of the heat exchanger, and a second air channel is formed between the second air channel switching mechanism and the first air channel switching mechanism; the mixed flow fan portion, mixed flow fan portion sets up in the casing and is located the below of second wind channel switching mechanism, mixed flow fan portion can be with the air current that is located outside the casing through second wind channel switching mechanism introduce carry out the heat exchange in the first wind channel in flow to the second wind channel, then outside the casing is discharged through first wind channel switching mechanism, perhaps, mixed flow fan portion can be with the air current that is located outside the casing through first wind channel switching mechanism introduce carry out the heat exchange in the first wind channel in flow to the second wind channel in, then outside the casing is discharged through second wind channel switching mechanism.

Further, the first air duct switching mechanism is provided with a first channel and a second channel, the first air duct switching mechanism can selectively open the first channel or the second channel, when the first channel is opened, the first channel is communicated with the first air duct, and when the second channel is opened, the second channel is communicated with the second air duct.

Further, when one of the first passage and the second passage is in the open state, the other is in the closed state.

Further, the second air duct switching mechanism is provided with a third channel and a fourth channel, the third channel or the fourth channel can be selectively opened by the second air duct switching mechanism, when the third channel is opened, the third channel is communicated with the first air duct, and when the fourth channel is opened, the fourth channel is communicated with the second air duct.

Further, when one of the third channel and the fourth channel is in the open state, the other is in the closed state.

Further, when the third channel is in the open state, the first channel is in the closed state, and the second channel is in the open state.

Further, the second channel is multiple, and multiple second channels are arranged at intervals along the circumferential direction of the first channel, and/or the third channel is multiple, and multiple third channels are arranged at intervals along the circumferential direction of the fourth channel.

Further, the first air duct switching mechanism includes: the first support frame is connected with at least one of the shell and the heat exchanger and is provided with a first channel and a second channel; the first rotating blade is movably arranged in the first support frame, the first rotating blade is provided with a first closing position when the first channel is closed, and the first rotating blade is provided with a first opening position for avoiding the first channel; the first driving part is connected with the first support frame and can drive the first rotating blade to be positioned at a first closing position or a first opening position; when the first rotating blade is located at the first closed position, the second channel is in an open state and is communicated with the first air channel, and when the first rotating blade is located at the first open position, the second channel is in a closed state.

Further, the first air duct switching mechanism further includes: the first sliding rail disc is connected with at least one of the first support frame, the heat exchanger and the shell, a first guide groove is formed in the first sliding rail disc, and the first driving portion can drive the first rotating blade to slide to a first closing position or a first opening position along the first guide groove.

Further, the first driving part includes: the first driving motor is connected with the first support frame, and an output shaft of the first driving motor is provided with a first driving rack; the first rotating disk is movably arranged in the first support frame, a first rack is arranged on the first rotating disk, the first rack is meshed with the first driving rack, the first sliding rail disk and the first rotating disk are oppositely arranged, the first rotating blade is located between the first sliding rail disk and the first rotating disk, and the first driving motor can drive the first rotating disk to drive the first rotating blade to be located at a first closing position or a first opening position.

Furthermore, a first limiting groove is formed in the first rotating disk, a first protrusion matched with the first limiting groove is arranged on the surface, facing the first rotating disk, of the first rotating blade, and a second protrusion matched with the first guide groove is arranged on the surface, facing the first sliding rail disk, of the first rotating blade.

Further, the first limiting groove is of an arc-shaped structure and extends along the radial direction of the first rotating disk, and/or the first guide groove is of a linear structure and extends along the radial direction of the first sliding rail disk.

Furthermore, the number of the first rotating blades is multiple, each first rotating blade is correspondingly provided with a first limiting groove and a first guide groove, and each first rotating blade is simultaneously positioned at a first opening position or a first closing position.

Further, the number of the first rotating blades is four, the four first rotating blades are arranged in pairs, the first rotating blades arranged in pairs are located on the same plane, and the two pairs of the first rotating blades are overlapped in the vertical direction.

Furthermore, the first channel is arranged in the middle of the first support frame, and the second channel is arranged along the circumferential direction of the first channel and is positioned at the outer edge of the first support frame.

Further, the outer edge of the first rotating disk, which faces one side of the first support frame, is provided with a boss, and the first rack is arranged on the boss.

Further, the second air duct switching mechanism includes: the second support frame is connected with at least one of the shell and the heat exchanger and is provided with a third channel and a fourth channel; the second rotating blade is movably arranged in the second supporting frame, the second rotating blade is provided with a second closing position for closing the third channel, and the second rotating blade is provided with a second opening position for avoiding the third channel; the second driving part is connected with the second supporting frame, and the second supporting frame can drive the second rotating blade to be positioned at a second closing position or a second opening position; when the second rotating blade is located at the second opening position, the fourth channel is in a closed state.

Further, the second air duct switching mechanism further includes: and the second sliding rail disc is connected with at least one of the second support frame and the shell, a second guide groove is formed in the second sliding rail disc, and the second driving part can drive the second rotating blade to slide to a second closing position or a second opening position along the second guide groove.

Further, the second driving part includes: the second driving motor is connected with the second supporting frame, and an output shaft of the second driving motor is provided with a second driving rack; the second rotating disk is movably arranged in the second supporting frame, a second rack is arranged on the second rotating disk, the second rack is meshed with the second driving rack, the second sliding rail disk and the second rotating disk are oppositely arranged, the second rotating blade is located between the second sliding rail disk and the second rotating disk, and the second driving motor can drive the second rotating disk to drive the second rotating blade to be located at the second closing position or the second opening position.

Furthermore, a second limiting groove is formed in the second rotating disk, a second protrusion matched with the second limiting groove is arranged on the surface, facing the second rotating disk, of the second rotating blade, and a second protrusion matched with the second guide groove is arranged on the surface, facing the second sliding rail disk, of the second rotating blade.

Further, the second limiting groove is of an arc-shaped structure and extends in the radial direction of the second rotating disk, and/or the second guide groove is of a linear structure and extends in the radial direction of the second sliding rail disk.

Furthermore, a plurality of second rotating blades are provided, each second rotating blade is correspondingly provided with a second limiting groove and a second guide groove, and each second rotating blade is simultaneously positioned at a second opening position or a second closing position.

Further, the number of the second rotating blades is four, and the four second rotating blades are arranged in pairs, wherein the second rotating blades arranged in pairs are located on the same plane, and the two pairs of formed second rotating blades are stacked in the vertical direction.

Furthermore, a third channel is arranged in the middle of the second support frame, and a fourth channel is arranged along the circumferential direction of the third channel and is positioned at the outer edge of the second support frame.

Further, when the third channel is opened, the first channel is in a closed state, and the second channel is in an open state.

Furthermore, the shell is provided with an upper air inlet and a lower air inlet, a third air channel is formed between the first air channel switching mechanism and the upper air inlet, a fourth air channel is formed between the second air channel switching mechanism and the lower air inlet, the mixed flow fan part is arranged in the fourth air channel, the third air channel can be communicated with the first air channel or the second air channel through the first air channel switching mechanism, and the fourth air channel can be communicated with the first air channel or the second air channel through the second air channel switching mechanism.

Further, the mixed flow fan portion includes: the supporting bearing is connected with the shell; the three-way air channel is connected with the support bearing and is positioned below the second air channel switching mechanism, a first switching mechanism is arranged at a first port of the three-way air channel, and the first port is selectively communicated or disconnected with the third channel through the first switching mechanism; the mixed flow fan is arranged in the three-way air duct.

Further, the three-way air duct further comprises a second port, the second port is arranged adjacent to the lower air port, the first switching mechanism has a third closed position for closing the first port, and the first switching mechanism has a third open position for opening the first port, and when the first switching mechanism is located at the third closed position, the first switching mechanism is located at a position avoiding the second port so that the second port is communicated with the lower air port.

Further, when the first switching mechanism is located at the third opening position, the first switching mechanism is located at a position for blocking the second port, so that the second port is disconnected from the lower air port.

Further, the three-way air duct further comprises a third port, the third port is arranged adjacent to the lower air opening, a second switching mechanism is arranged at the third port, the second switching mechanism has a fourth closing position and a fourth opening position, when the second switching mechanism is located at the fourth closing position, the third port is disconnected from the lower air opening, and when the second switching mechanism is located at the fourth opening position, the third port is communicated with the lower air opening.

Further, when the second switching mechanism is located at the fourth closed position, the first switching mechanism is located at the third open position.

Furthermore, the lower edge of the three-way air duct is of an annular structure, and an annular cavity formed by the lower edge of the three-way air duct is communicated with the fourth air duct.

Further, the first switching mechanism includes: the arc-shaped sliding door is arranged in the three-way air channel, and a first sliding rack is arranged on one side of the arc-shaped sliding door; the third driving motor is connected with the three-way air channel, a driving gear is arranged on an output shaft of the third driving motor, and the third driving motor can drive the arc-shaped sliding door to be positioned at a third closing position or a third opening position; and the sealing plate is connected with the three-way air channel so as to seal the connecting side of the third driving motor and the arc-shaped sliding door.

Further, the second switching mechanism includes: the supporting plate is connected with the supporting bearing; the sliding door is arranged on the supporting plate in a sliding manner along the circumferential direction of the supporting bearing, and a second sliding rack is arranged on the sliding door; and the fourth driving motor is connected with the three-way air channel, a gear meshed with the second sliding rack is arranged on an output shaft of the fourth driving motor, and the fourth driving motor can drive the sliding door to be positioned at a fourth opening position or a fourth closing position.

Furthermore, one side of the sliding door, which faces the supporting plate, is at least provided with a limiting slide way, and the supporting plate is provided with a roller matched with the limiting slide way.

Further, the cabinet air conditioner still includes: and the water receiving tray is connected with the second air channel switching mechanism and is positioned above the second air channel switching mechanism, and the second end of the heat exchanger is positioned in the water receiving tray.

Use the technical scheme of the utility model, through set up mixed flow fan portion in the casing, and introduce the order in first wind channel and second wind channel through controlling first wind channel switching mechanism and second wind channel switching mechanism in order to change outside air current, realize not equidirectional air inlet and air-out mode then, set up like this and to make this cabinet air conditioner according to the gas flow characteristic, select the air-out mode of cabinet air conditioner heating mode and the correspondence under the cooling mode, the air-out mode of cabinet air conditioner that adopts this structure can make the air current less at the difference in temperature of longitudinal direction, the utilization efficiency of the energy of cabinet air conditioner has been improved effectively, user's use experience has been improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a cabinet air conditioner according to the present invention;

fig. 2 is a schematic structural diagram illustrating an embodiment of upper air inlet and lower air outlet of the cabinet air conditioner according to the present invention;

fig. 3 is a schematic structural diagram of an embodiment of a lower air inlet and an upper air outlet of the cabinet air conditioner according to the present invention;

fig. 4 is a schematic cross-sectional view of an embodiment of a lower air inlet and an upper air outlet of a cabinet air conditioner according to the present invention;

fig. 5 is a schematic cross-sectional view of an embodiment of a lower air inlet and an upper air outlet of a cabinet air conditioner according to the present invention;

fig. 6 shows a schematic cross-sectional structural view of an embodiment of a cabinet air conditioner according to the present invention;

fig. 7 shows a schematic structural view of an embodiment of a mixed flow fan section according to the present invention;

fig. 8 shows an exploded view of an embodiment of a mixed flow fan section according to the present invention;

fig. 9 is a schematic structural diagram of a first embodiment of a first air duct switching mechanism according to the present invention;

fig. 10 is a schematic diagram illustrating an explosive structure of a first embodiment of a first air duct switching mechanism according to the present invention;

fig. 11 is a schematic structural diagram of a second embodiment of the first air duct switching mechanism according to the present invention;

fig. 12 is an exploded schematic view of a second embodiment of a first air duct switching mechanism according to the present invention;

fig. 13 is an exploded schematic view of a third embodiment of a first air duct switching mechanism according to the present invention;

fig. 14 is a schematic structural diagram of a first embodiment of a second air duct switching mechanism according to the present invention;

fig. 15 is an exploded schematic view of a first embodiment of a second air duct switching mechanism according to the present invention;

fig. 16 shows a schematic structural diagram of a second embodiment of the second air duct switching mechanism according to the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 11. an air inlet; 12. a lower tuyere;

20. a heat exchanger; 21. a first air duct; 22. a second air duct; 23. a third air duct; 24. a fourth air duct;

30. a first air duct switching mechanism; 31. a first channel; 32. a second channel; 33. a first support frame; 34. a first rotating blade; 341. a first protrusion;

35. a first driving section; 351. a first drive motor; 352. a first drive rack; 353. a first rotating disk; 354. a first limit groove; 355. a boss; 356. a first rack;

36. a first sliding rail disc; 361. a first guide groove;

40. a second air duct switching mechanism; 41. a third channel; 42. a fourth channel; 43. a second support frame; 44. a second rotary blade; 441. a second protrusion;

45. a second driving section;

451. a second drive motor; 452. a second drive rack; 453. a second rotating disk; 454. a second limit groove; 455. a boss; 456. a second rack;

46. a second sliding track plate; 461. a second guide groove;

50. a mixed flow fan part; 51. a support bearing; 52. a three-way air duct; 521. a first port; 522. a second port; 523. a third port; 53. a mixed flow fan;

60. a first switching mechanism; 61. an arc-shaped sliding door; 62. a first sliding rack; 63. a third drive motor; 64. closing the plate;

70. a second switching mechanism; 71. a support plate; 711. a roller;

72. a sliding door; 721. a second sliding rack; 722. a limiting slide way; 73. a fourth drive motor; 731. a gear;

80. a water pan;

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 16, according to an embodiment of the present invention, a cabinet air conditioner is provided.

Specifically, as shown in fig. 1 to 5, the cabinet air conditioner includes a housing 10, a heat exchanger 20, a first air duct switching mechanism 30, a second air duct switching mechanism 40, and a mixed flow fan unit 50. The heat exchanger 20 is disposed in the housing 10, and the heat exchanger 20 is a hollow structure, and the hollow structure forms a first air duct 21. At least part of the outer surface of the heat exchanger 20 is disposed at a distance from the inner wall of the casing 10 to form a second air passage 22. The first air channel switching mechanism 30 is disposed in the housing 10 and connected to a first end of the heat exchanger 20. The second air duct switching mechanism 40 is disposed in the housing 10 and connected to a second end of the heat exchanger 20. The second air duct 22 is formed between the second air duct switching mechanism 40 and the first air duct switching mechanism 30. The mixed flow fan portion 50 is disposed in the casing 10 and below the second air duct switching mechanism 40, and the mixed flow fan portion 50 can introduce the airflow outside the casing 10 into the first air duct 21 through the second air duct switching mechanism 40, perform heat exchange, flow into the second air duct 22, and then discharge the airflow outside the casing 10 through the first air duct switching mechanism 30. The mixed flow fan portion 50 may also introduce the airflow outside the housing 10 into the first air duct 21 through the first air duct switching mechanism 30, perform heat exchange, flow into the second air duct 22, and then discharge the airflow outside the housing 10 through the second air duct switching mechanism 40.

In this embodiment, through set up mixed flow fan portion in the casing, and through the order of controlling first wind channel switching mechanism and second wind channel switching mechanism in order to change first wind channel of outside air current introduction and second wind channel, realize the air inlet and the air-out mode of equidirectional then, set up like this and to make this cabinet air conditioner according to the gas flow characteristic, select the air-out mode of the cabinet air conditioner correspondence under heating mode and the refrigeration mode, the air-out mode of the cabinet air conditioner that adopts this structure can make the air current less at the difference in temperature of longitudinal direction, the utilization efficiency of the energy of cabinet air conditioner has been improved effectively, user's use experience has been improved.

As shown in fig. 4, 5, 9 and 10, the first air duct switching mechanism 30 has a first passage 31 and a second passage 32. The first air channel switching mechanism 30 selectively opens the first channel 31 or the second channel 32, and when the first channel 31 is opened, the first channel 31 is communicated with the first air channel 21, and when the second channel 32 is opened, the second channel 32 is communicated with the second air channel 22. The arrangement makes the first air duct switching mechanism 30 simple in structure and stable in operation.

Preferably, in the present embodiment, when one of the first passage 31 and the second passage 32 is in the open state, the other is in the closed state. The arrangement can avoid air leakage between the air ducts, and improves the sealing performance of the first air duct switching mechanism 30.

As shown in fig. 4, 5, 14 and 15, the second air duct switching mechanism 40 has a third passage 41 and a fourth passage 42. The second air channel switching mechanism 40 selectively opens the third channel 41 or the fourth channel 42, when the third channel 41 is opened, the third channel 41 is communicated with the first air channel 21, and when the fourth channel 42 is opened, the fourth channel 42 is communicated with the second air channel 22. The arrangement makes the first air duct switching mechanism 30 simple in structure and easy to process.

Preferably, one of the third and fourth passages 41 and 42 is in an open state and the other is in a closed state. The arrangement can avoid air leakage between the air ducts, and improves the sealing performance of the second air duct switching mechanism 40.

As shown in fig. 4, when the third passage 41 is in the open state within the housing, the first passage 31 is in the closed state and the second passage 32 is in the open state. This cabinet air conditioner can select for the cooling mode air-out at this time, and the setting can make the air current that is located outside the casing pass through third passageway 41 and get into in first wind channel 21 like this, then discharge outside the casing through second wind channel 22 after the lateral wall heat transfer through the heat exchanger.

As shown in fig. 9 to 16, the second passages 32 are plural, the plural second passages 32 are arranged at intervals in the circumferential direction of the first passage 31, the plural third passages 41 are plural, and the plural third passages 41 are arranged at intervals in the circumferential direction of the fourth passage 42. That is, in the present application, the structures of the first air duct switching mechanism 30 and the second air duct switching mechanism 40 may be configured in the same manner, such an arrangement can effectively reduce the production cost of the cabinet air conditioner, and further improve the reliability of the air conditioner.

Further, the first air duct switching mechanism 30 includes a first support bracket 33, a first rotary blade 34, and a first driving portion 35. The first support frame 33 is connected with at least one of the housing 10 and the heat exchanger, and the first support frame 33 is provided with a first passage 31 and a second passage 32. The first rotary vane 34 is movably disposed in the first support frame 33, the first rotary vane 34 has a first closed position when the first passage 31 is closed, and the first rotary vane 34 has a first open position when the first passage 31 is closed. The first driving part 35 is connected to the first support frame 33, and the first driving part 35 can drive the first rotary blade 34 to be located at a first closed position or a first open position. Wherein the second passage 32 is in an open state and communicates with the first air path 21 when the first rotary blade 34 is in the first closed position, and the second passage 32 is in a closed state when the first rotary blade 34 is in the first open position.

The first air duct switching mechanism 30 also includes a first slider plate 36. The first sliding plate 36 is connected to at least one of the first support frame 33, the heat exchanger 20, and the housing 10. The first sliding plate 36 is provided with a first guide groove 361, and the first driving part 35 can drive the first rotating blade 34 to slide along the first guide groove 361 to a first closed position or a first open position.

The first driving part 35 includes a first driving motor 351 and a first rotating disk 353. The first driving motor 351 is connected to the first support frame 33. An output shaft of the first driving motor 351 is provided with a first driving rack 352. The first rotating disc 353 is movably disposed in the first supporting frame 33, and a first rack 356 is disposed on the first rotating disc 353. The first rack 356 is engaged with the first driving rack 352, the first sliding plate 36 is disposed opposite to the first rotating plate 353, the first rotating blade 34 is disposed between the first sliding plate 36 and the first rotating plate 353, and the first driving motor 351 can drive the first rotating plate 353 to drive the first rotating blade 34 to be located at the first closed position or the first open position. The first rotating disk 353 is provided with a first limiting groove 354, the surface of the first rotating blade 34 facing the first rotating disk 353 is provided with a first protrusion 341 matched with the first limiting groove 354, and the surface of the first rotating blade 34 facing the first sliding rail disk 36 is provided with a second protrusion matched with the first guiding groove 361. This arrangement can improve the stability and reliability of the drive mechanism.

Preferably, the first limiting groove 354 has an arc-shaped structure, the first limiting groove 354 extends in a radial direction of the first rotating plate 353, the first guide groove 361 has a linear structure, and the first guide groove 361 extends in the radial direction of the first sliding plate 36. This arrangement can achieve the object of changing the trajectory of the first rotating blade 34.

The number of the first rotary vanes 34 is plural, each first rotary vane 34 is correspondingly provided with a first limit groove 354 and a first guide groove 361, and each first rotary vane 34 is simultaneously located at the first open position or the first closed position. This arrangement can further improve the reliability of the switching mechanism.

Preferably, as shown in fig. 10 and 12, the number of the first rotary blades 34 is four, and four first rotary blades 34 are provided in pairs. Wherein the first rotating blades 34 arranged in pairs are located in the same plane, and the two pairs of the first rotating blades 34 are formed to be overlapped in the vertical direction. As shown in fig. 12, the two ends of the opposite portion of the two first rotating blades 34 located above are provided with the abdicating notches, so that the first protrusions of the two first rotating blades 34 located below can slide in or out smoothly, and then the sealing and abdicating functions of the four first rotating blades 34 are realized.

The first channel 31 is arranged in the middle of the first support frame 33, and the second channel 32 is arranged along the circumference of the first channel 31 and is located at the outer edge of the first support frame 33. This arrangement can reduce the difficulty of the trajectory of the first rotary vane 34, making the switching mechanism simple and reliable.

As shown in fig. 10, an outer edge of the first rotating disk 353 on a side facing the first support frame 33 is provided with a boss 355, and the first rack 356 is provided on the boss 355. This arrangement can improve the reliability of connection of the first rotating disk 353 to the driving section. Wherein. As shown in fig. 13, the components of the switching mechanism may be placed upside down, and the specific placement order is as shown in fig. 13.

As shown in fig. 14 to 16, the second air duct switching mechanism 40 includes a second support bracket 43, a second rotary blade 44, and a second driving unit 45. The second support bracket 43 is connected with at least one of the casing 10 and the heat exchanger, and the second support bracket 43 is provided with a third passage 41 and a fourth passage 42. The second rotating blade 44 is movably disposed in the second supporting frame 43, the second rotating blade 44 has a second closed position when closing the third channel 41, and the second rotating blade 44 has a second open position avoiding the third channel 41. The second driving part 45 is connected with the second supporting frame 43, and the second supporting frame 43 can drive the second rotating blade 44 to be located at a second closed position or a second open position; wherein, when the second rotary blade 44 is located at the second closed position, the fourth passage 42 is in an open state and is communicated with the first air duct 21, and when the second rotary blade 44 is located at the second open position, the fourth passage 42 is in a closed state.

The second air duct switching mechanism 40 also includes a second slider plate 46. The second sliding plate 46 is connected to at least one of the second supporting frame 43 and the housing 10, the second sliding plate 46 is provided with a second guide slot 461, and the second driving part 45 can drive the second rotary blade 44 to slide along the second guide slot 461 to a second closed position or a second open position. The second driving part 45 includes a second driving motor 451 and a second rotating disk 453. The second driving motor 451 is connected to the second supporting frame 43, and an output shaft of the second driving motor 451 is provided with a second driving rack 452. The second rotating disc 453 is movably disposed in the second supporting frame 43, the second rotating disc 453 is provided with a second rack 456, the second rack 456 is engaged with the second driving rack 452, the second sliding plate 46 is disposed opposite to the second rotating disc 453, the second rotating blade 44 is disposed between the second sliding plate 46 and the second rotating disc 453, and the second driving motor 451 can drive the second rotating disc 453 to drive the second rotating blade 44 to be located at the second closed position or the second open position.

The second rotating plate 453 is provided with a second stopper groove 454. A second protrusion 441 is disposed on a surface of the second rotary blade 44 facing the second rotary disk 453 to be engaged with the second stopper groove 454, and a second protrusion is disposed on a surface of the second rotary blade 44 facing the second sliding plate 46 to be engaged with the second guide groove 461. The second limiting groove 454 has an arc-shaped structure, the second limiting groove 454 extends along the radial direction of the second rotating disc 453, the second guiding groove 461 has a linear structure, and the second guiding groove 461 extends along the radial direction of the second sliding rail disc 46. The outer edge of the second rotating plate 453 on the side facing the second supporting bracket 43 is provided with a boss 455, and the second rack 456 is provided on the boss 455.

The second rotary vane 44 is plural. Each second rotary blade 44 is correspondingly provided with a second limit groove 454 and a second guide groove 461, and each second rotary blade 44 is simultaneously located at the second opening position or the second closing position.

Preferably, the number of the second rotating blades 44 is four, and the four second rotating blades 44 are arranged in pairs, wherein the second rotating blades 44 arranged in pairs are located in the same plane, and the two pairs of second rotating blades 44 are formed to be overlapped in the vertical direction. The arrangement of the second rotary blade 44 is similar to the arrangement of the first rotary blade 34, and the reliability of the switching mechanism can be further improved.

The third channel 41 is opened in the middle of the second supporting frame 43, and the fourth channel 42 is arranged along the circumference of the third channel 41 and at the outer edge of the second supporting frame 43. When the third passage 41 is opened, the first passage 31 is in a closed state, and the second passage 32 is in an open state.

As shown in fig. 1 to 6, the casing 10 has an upper tuyere 11 and a lower tuyere 12. A third air duct 23 is formed between the first air duct switching mechanism 30 and the upper air inlet 11. The fourth air duct 24 is formed between the second air duct switching mechanism 40 and the lower air inlet 12. The mixed flow fan part 50 is arranged in the fourth air duct 24. The third air duct 23 may communicate with the first air duct 21 or the second air duct 22 through the first air duct switching mechanism 30. The fourth air duct 24 may communicate with the first air duct 21 or the second air duct 22 through the second air duct switching mechanism 40.

As shown in fig. 7 and 8, the mixed flow fan unit 50 includes a support bearing 51, a three-way duct 52, and a mixed flow fan 53. The support bearing 51 is connected with the housing 10. The three-way air duct 52 is connected to the support bearing 51 and is located below the second air duct switching mechanism 40. A first switching mechanism 60 is disposed at the first port 521 of the three-way air duct 52, and the first port 521 is selectively communicated with or disconnected from the third duct 41 by the first switching mechanism 60. The mixed flow fan 53 is disposed in the three-way air duct 52. The arrangement can improve the practicability and reliability of the fan part.

The three-way duct 52 also includes a second port 522. The second vent 522 is disposed adjacent to the leeward port 12. The first switching mechanism 60 has a third closed position that closes the first through opening 521, and the first switching mechanism 60 has a third open position that opens the first through opening 521, and when the first switching mechanism 60 is in the third closed position, the first switching mechanism 60 is positioned to avoid the second through opening 522 so that the second through opening 522 communicates with the leeward port 12. When the first switching mechanism 60 is in the third open position, the first switching mechanism 60 is in a position to block the second opening 522 so that the second opening 522 is disconnected from the leeward port 12.

Further, the three-way air duct 52 further includes a third port 523. The third vent 523 is provided adjacent to the leeward port 12. The third connection 523 is provided with a second switching mechanism 70. The second switching mechanism 70 has a fourth closed position and a fourth open position, and when the second switching mechanism 70 is in the fourth closed position, the third port 523 is disconnected from the leeward port 12, and when the second switching mechanism 70 is in the fourth open position, the third port 523 is communicated with the leeward port 12.

When the second switching mechanism 70 is located at the fourth closed position, the first switching mechanism 60 is located at the third open position. The arrangement enables the mixed flow fan part 50 to select a proper air outlet mode according to a heat exchange mode, and further improves the practicability and reliability of the mixed flow fan part 50.

Preferably, the lower edge of the three-way duct 52 is of annular configuration. The annular chamber formed by the lower edges of the three-way air ducts 52 is communicated with the fourth air duct 24.

Specifically, the first switching mechanism 60 includes an arc-shaped sliding door 61, a third driving motor 63, and a closing plate 64. The arc-shaped sliding door 61 is disposed in the three-way air duct 52. One side of the arc-shaped sliding door 61 is provided with a first sliding rack 62. The third driving motor 63 is connected to the three-way air duct 52, and an output shaft of the third driving motor 63 is provided with a driving gear. The third driving motor 63 may drive the arc-shaped sliding door 61 to be located at the third closed position or the third open position. A sealing plate 64 is connected to the three-way duct 52 to seal the connection side of the third driving motor 63 with the arc-shaped sliding door 61. The sealing performance of the three-way air channel can be improved by the arrangement.

Further, the second switching mechanism 70 includes a support plate 71, a sliding door 72, and a fourth driving motor 73. The support plate 71 is connected with the support bearing 51. The sliding door 72 is slidably provided on the support plate 71 in the circumferential direction of the support bearing 51. The sliding door 72 is provided with a second sliding rack 721. The fourth drive motor 73 is connected to the three-way air duct 52. The output shaft of the fourth driving motor 73 is provided with a gear 731 engaged with the second sliding rack 721, and the fourth driving motor 73 can drive the sliding door 72 to be located at the fourth opening position or the fourth closing position.

In order to make the sliding door 72 more smooth and stable in the sliding process, at least one limiting slide way 722 is arranged on one side of the sliding door 72 facing the supporting plate 71, and a roller 711 matched with the limiting slide way 722 is arranged on the supporting plate 71. As shown in fig. 8, two limit slideways 722 are provided on the side of the sliding door 72 facing the support plate 71, wherein one limit of the sliding door 72 in the horizontal direction is realized, and the other limit slideway 722 realizes the limit of the sliding door 72 in the vertical direction.

The cabinet air conditioner further comprises a water pan 80. The water pan 80 is connected to the second air duct switching mechanism 40 and is located above the second air duct switching mechanism 40, and the second end of the heat exchanger 20 is located in the water pan 80.

Specifically, the cabinet air conditioner adopting the structure can realize the selection of the comfortable air outlet function of up-down convection, and optimize the distribution of an indoor temperature field. Specifically, an air port is respectively arranged at the upper part and the lower part of the vertical cabinet air conditioner, the internal structure is provided with a mixed flow fan structure, and different air duct air outlet modes of upper and lower convection are realized through the switching of the internal mechanism, so that the upper and lower circulation convection is realized in a refrigeration and heating mode, and air is exhausted from an upper air port and returned from a lower air port during refrigeration. When heating, air is discharged from the lower air outlet and returned from the upper air outlet. The heat can be recycled according to the characteristics of cold air and hot air, so that the running mode of the whole machine can be adjusted, and the effects of energy conservation, comfort and power saving are achieved. Among them, the heat exchanger is preferably an evaporator.

The internal structure of the cabinet machine is mainly divided into a base, a fan air duct, a water receiving disc, an evaporator, an internal channel mechanism, an upper air inlet and a lower air inlet. The product operation mainly realizes different circulating air supply modes through the movement switching mechanism in the fan air duct assembly and the internal channel assembly. As shown in fig. 4, 7 and 8, when the air conditioner is in a lower air inlet and upper air outlet mode, the mixed flow fan is started, the arc-shaped sliding door in the fan assembly rotates to open the third channel, the air inlet of the inner ring of the middle channel mechanism at the lower end of the evaporator is opened, the mixed flow fan supplies air upwards, air enters the sliding door at the lower air inlet to supply air upwards, the air exchanges heat through the evaporator, then is converged around the upper end of the evaporator, and supplies air from the upper air inlet to be discharged. When the air-out mode under the last air inlet, the mixed flow fan starts, and the second port of the arc sliding door in the fan subassembly is opened, and the fan induced drafts and down the wind gap air supply through pressure from the outlying fourth passageway of evaporimeter lower extreme, and the first passageway in evaporimeter upper end position intermediate channel switching mechanism inner circle wind gap is opened, inhales the wind and goes into from last wind gap through pressure, passes the evaporimeter and gets into the fan from lower extreme outer lane wind gap to realize high-efficient heat transfer.

According to another aspect of the present application, there is provided a method for controlling a cabinet air conditioner, the method comprising the steps of: when the heating mode is selected by the controller of the cabinet air conditioner, the first channel 31 of the first air duct switching mechanism 30 is opened, the fourth channel 42 of the second air duct switching mechanism 40 is opened, and the mixed flow fan part 50 sucks external air flow into the shell 10 from the upper air inlet 11 to exchange heat with the heat exchanger 20, and then discharges the external air flow out of the shell 10 through the lower air inlet 12; when the cooling mode is selected by the controller, the second duct 32 of the first air duct switching mechanism 30 is opened, the third duct 41 of the second air duct switching mechanism 40 is opened, and the mixed flow fan portion 50 sucks external air flow into the casing 10 from the lower air inlet 12, exchanges heat with the heat exchanger 20, and then discharges the external air flow out of the casing 10 through the upper air inlet 11.

Further, the cabinet air conditioner further comprises an air supply mode, when the air supply mode is selected through the controller, the first channel 31 is opened, the third channel 41 is opened, the mixed flow fan part 50 sucks external air flow into the shell 10 from the upper air inlet 11 and then discharges the external air flow out of the shell 10 through the lower air inlet 12, or the first channel 31 is opened, the third channel 41 is opened, and the mixed flow fan part 50 sucks the external air flow into the shell 10 from the lower air inlet 12 and then discharges the external air flow out of the shell 10 through the upper air inlet 11; in the air blowing mode, the heat exchanger 20 is in a non-operating state, that is, the heat exchanger 20 does not perform heat exchange operation.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (36)

1. A cabinet air conditioner, comprising:

a housing (10);

the heat exchanger (20) is arranged in the shell (10), the heat exchanger (20) is of a hollow structure, the hollow structure forms a first air duct (21), and at least part of the outer surface of the heat exchanger (20) is arranged at a distance from the inner wall of the shell (10) to form a second air duct (22);

the first air duct switching mechanism (30), the first air duct switching mechanism (30) is arranged in the shell (10) and is connected with the first end of the heat exchanger (20);

the second air duct switching mechanism (40), the second air duct switching mechanism (40) is arranged in the shell (10) and is connected with the second end of the heat exchanger (20), and the second air duct (22) is formed between the second air duct switching mechanism (40) and the first air duct switching mechanism (30);

the mixed flow fan part (50) is arranged in the shell (10) and located below the second air duct switching mechanism (40), the mixed flow fan part (50) can introduce airflow outside the shell (10) into the first air duct (21) through the second air duct switching mechanism (40) to perform heat exchange and then flow into the second air duct (22), and then the airflow is discharged out of the shell (10) through the first air duct switching mechanism (30), or the mixed flow fan part (50) can introduce airflow outside the shell (10) through the first air duct switching mechanism (30) into the first air duct (21) to perform heat exchange and then flow into the second air duct (22), and then the airflow is discharged out of the shell (10) through the second switching mechanism (40).

2. The cabinet air conditioner according to claim 1, wherein the first air duct switching mechanism (30) has a first duct (31) and a second duct (32), the first air duct switching mechanism (30) selectively opens the first duct (31) or the second duct (32), the first duct (31) communicates with the first air duct (21) when the first duct (31) is open, and the second duct (32) communicates with the second air duct (22) when the second duct (32) is open.

3. A cabinet air conditioner according to claim 2, characterized in that when one of the first and second ducts (31, 32) is in an open state, the other is in a closed state.

4. The cabinet air conditioner according to claim 2 or 3, wherein the second air duct switching mechanism (40) has a third air duct (41) and a fourth air duct (42), the second air duct switching mechanism (40) selectively opens the third air duct (41) or the fourth air duct (42), the third air duct (41) communicates with the first air duct (21) when the third air duct (41) is opened, and the fourth air duct (42) communicates with the second air duct (22) when the fourth air duct (42) is opened.

5. A cabinet air conditioner according to claim 4, characterized in that when one of the third and fourth channels (41, 42) is in an open state, the other is in a closed state.

6. A cabinet air conditioner according to claim 5, characterized in that when the third duct (41) is in an open state, the first duct (31) is in a closed state and the second duct (32) is in an open state.

7. A cabinet air conditioner according to claim 5,

the second channel (32) is a plurality of second channels (32) which are arranged at intervals along the circumferential direction of the first channel (31), and/or

The third channels (41) are multiple, and the third channels (41) are arranged at intervals along the circumferential direction of the fourth channel (42).

8. The cabinet air conditioner according to claim 2, wherein the first air duct switching mechanism (30) comprises:

a first support frame (33), the first support frame (33) being connected with at least one of the housing (10) and the heat exchanger, the first support frame (33) being provided with the first channel (31) and the second channel (32);

a first rotating vane (34), said first rotating vane (34) being movably arranged within said first support frame (33), said first rotating vane (34) having a first closed position when closing said first passage (31), and said first rotating vane (34) having a first open position avoiding said first passage (31);

a first driving part (35), wherein the first driving part (35) is connected with the first support frame (33), and the first driving part (35) can drive the first rotating blade (34) to be positioned at the first closing position or the first opening position;

wherein the second passageway (32) is in an open state and in communication with the first air duct (21) when the first rotary vane (34) is in the first closed position, and the second passageway (32) is in a closed state when the first rotary vane (34) is in the first open position.

9. The cabinet air conditioner according to claim 8, wherein the first air duct switching mechanism (30) further comprises:

a first sliding rail plate (36), wherein the first sliding rail plate (36) is connected with at least one of the first support frame (33), the heat exchanger (20) and the housing (10), a first guide groove (361) is formed in the first sliding rail plate (36), and the first driving portion (35) can drive the first rotating blade (34) to slide along the first guide groove (361) to the first closed position or the first open position.

10. Cabinet air conditioner according to claim 9, characterized in that the first drive (35) comprises:

a first driving motor (351), wherein the first driving motor (351) is connected with the first support frame (33), and an output shaft of the first driving motor (351) is provided with a first driving rack (352);

a first rotating disk (353), the first rotating disk (353) being movably disposed in the first supporting frame (33), a first rack (356) being disposed on the first rotating disk (353), the first rack (356) being engaged with the first driving rack (352), the first sliding track disk (36) being disposed opposite to the first rotating disk (353), the first rotating blade (34) being disposed between the first sliding track disk (36) and the first rotating disk (353), the first driving motor (351) being capable of driving the first rotating disk (353) to drive the first rotating blade (34) to be located at the first closed position or the first open position.

11. Cabinet air conditioner according to claim 10, characterized in that the first rotary disk (353) is provided with a first retaining groove (354), that the surface of the first rotary blade (34) facing the first rotary disk (353) is provided with a first protrusion (341) cooperating with the first retaining groove (354), and that the surface of the first rotary blade (34) facing the first sliding rail disk (36) is provided with a second protrusion cooperating with the first guiding groove (361).

12. Cabinet air conditioner according to claim 11, characterized in that the first limiting groove (354) is of an arc-shaped configuration, the first limiting groove (354) extending in a radial direction of the first rotary disk (353), and/or the first guide groove (361) is of a straight configuration, the first guide groove (361) extending in a radial direction of the first slide plate (36).

13. The cabinet air conditioner according to claim 11, wherein the first rotary vane (34) is plural, each of the first rotary vanes (34) is provided with one of the first retaining groove (354) and one of the first guide groove (361), and each of the first rotary vanes (34) is located at the first open position or the first closed position at the same time.

14. Cabinet air conditioner according to claim 12, characterized in that the number of first rotary vanes (34) is four, four first rotary vanes (34) being arranged in pairs of two, wherein the first rotary vanes (34) arranged in pairs are located in the same plane, and the two pairs of first rotary vanes (34) formed are stacked in a vertical direction.

15. Cabinet air conditioner according to claim 10, characterized in that the first channel (31) opens in the middle of the first support frame (33), and the second channel (32) is arranged in the circumferential direction of the first channel (31) and at the outer edge of the first support frame (33).

16. A cabinet air conditioner according to claim 10, characterized in that the outer edge of the first rotary disk (353) on the side facing the first support frame (33) is provided with a boss (355), the first rack (356) being provided on the boss (355).

17. The cabinet air conditioner according to claim 4, wherein the second air duct switching mechanism (40) comprises:

a second support frame (43), the second support frame (43) being connected with at least one of the housing (10) and the heat exchanger, the second support frame (43) being provided with the third channel (41) and the fourth channel (42);

a second rotary vane (44), said second rotary vane (44) being movably disposed within said second support shelf (43), said second rotary vane (44) having a second closed position closing said third passageway (41), and said second rotary vane (44) having a second open position bypassing said third passageway (41);

a second driving part (45), wherein the second driving part (45) is connected with the second supporting frame (43), and the second supporting frame (43) can drive the second rotating blade (44) to be located at the second closing position or the second opening position;

wherein the fourth passage (42) is in an open state and communicates with the first air duct (21) when the second rotary blade (44) is in the second closed position, and the fourth passage (42) is in a closed state when the second rotary blade (44) is in the second open position.

18. The cabinet air conditioner according to claim 17, wherein the second air duct switching mechanism (40) further comprises:

a second sliding rail plate (46), wherein the second sliding rail plate (46) is connected to at least one of the second supporting frame (43) and the housing (10), a second guide groove (461) is formed in the second sliding rail plate (46), and the second driving portion (45) can drive the second rotating blade (44) to slide to the second closed position or the second open position along the second guide groove (461).

19. Cabinet air conditioner according to claim 18, characterized in that the second driving part (45) comprises:

the second driving motor (451) is connected with the second supporting frame (43), and an output shaft of the second driving motor (451) is provided with a second driving rack (452);

a second rotating disc (453), the second rotating disc (453) is movably disposed in the second supporting frame (43), a second rack (456) is disposed on the second rotating disc (453), the second rack (456) is engaged with the second driving rack (452), the second sliding track disc (46) is disposed opposite to the second rotating disc (453), the second rotating blade (44) is disposed between the second sliding track disc (46) and the second rotating disc (453), and the second driving motor (451) can drive the second rotating disc (453) to drive the second rotating blade (44) to be located at the second closed position or the second open position.

20. A cabinet air conditioner according to claim 19, characterized in that the second rotary disk (453) is provided with a second limiting groove (454), the surface of the second rotary blade (44) facing the second rotary disk (453) is provided with a second protrusion (441) which is matched with the second limiting groove (454), and the surface of the second rotary blade (44) facing the second sliding rail disk (46) is provided with a second protrusion which is matched with the second guide groove (461).

21. A cabinet air conditioner according to claim 20, characterized in that the second limiting groove (454) is of an arc-shaped configuration, the second limiting groove (454) extending in a radial direction of the second rotating disc (453), and/or the second guide groove (461) is of a linear configuration, the second guide groove (461) extending in a radial direction of the second sliding plate (46).

22. The cabinet air conditioner according to claim 21, wherein the second rotary vane (44) is plural, each second rotary vane (44) is correspondingly provided with one second limit groove (454) and one second guide groove (461), and each second rotary vane (44) is simultaneously located at the second opening position or the second closing position.

23. Cabinet air conditioner according to claim 22, characterized in that the number of the second rotating blades (44) is four, and four second rotating blades (44) are arranged in pairs, wherein the second rotating blades (44) arranged in pairs are located in the same plane, and the two pairs of second rotating blades (44) are stacked in a vertical direction.

24. Cabinet air conditioner according to claim 19, characterized in that the third channel (41) opens in the middle of the second support frame (43), and the fourth channel (42) is arranged in the circumferential direction of the third channel (41) and at the outer edge of the second support frame (43).

25. Cabinet air conditioner according to any of claims 5 to 24, characterized in that when the third channel (41) is open, the first channel (31) is in a closed state and the second channel (32) is in an open state.

26. The cabinet air conditioner according to claim 4, wherein the housing (10) has an upper air inlet (11) and a lower air inlet (12), a third air duct (23) is formed between the first air duct switching mechanism (30) and the upper air inlet (11), a fourth air duct (24) is formed between the second air duct switching mechanism (40) and the lower air inlet (12), the mixed flow fan portion (50) is disposed in the fourth air duct (24), the third air duct (23) can be communicated with the first air duct (21) or the second air duct (22) through the first air duct switching mechanism (30), and the fourth air duct (24) can be communicated with the first air duct (21) or the second air duct (22) through the second air duct switching mechanism (40).

27. A cabinet air conditioner according to claim 26, wherein the mixed flow fan portion (50) comprises:

a support bearing (51), the support bearing (51) being connected to the housing (10);

the three-way air duct (52) is connected with the support bearing (51) and is positioned below the second air duct switching mechanism (40), a first switching mechanism (60) is arranged at a first port (521) of the three-way air duct (52), and the first port (521) can be selectively communicated with or disconnected from the third channel (41) through the first switching mechanism (60);

the mixed flow fan (53), the mixed flow fan (53) sets up in three-way wind channel (52).

28. A cabinet air conditioner according to claim 27, wherein the three-way air duct (52) further includes a second through opening (522), the second through opening (522) being disposed adjacent to the lower air opening (12), the first switching mechanism (60) having a third closed position closing the first through opening (521), and the first switching mechanism (60) having a third open position opening the first through opening (521), the first switching mechanism (60) being positioned to avoid the second through opening (522) when the first switching mechanism (60) is positioned at the third closed position so as to communicate the second through opening (522) with the lower air opening (12).

29. The cabinet air conditioner according to claim 28, wherein when the first switching mechanism (60) is in the third open position, the first switching mechanism (60) is in a position to block the second port (522) such that the second port (522) is disconnected from the down draft (12).

30. A cabinet air conditioner according to claim 29, wherein the three-way air duct (52) further comprises a third port (523), the third port (523) is disposed adjacent to the lower air opening (12), a second switching mechanism (70) is disposed at the third port (523), the second switching mechanism (70) has a fourth closed position and a fourth open position, the third port (523) is disconnected from the lower air opening (12) when the second switching mechanism (70) is in the fourth closed position, and the third port (523) is communicated with the lower air opening (12) when the second switching mechanism (70) is in the fourth open position.

31. A cabinet air conditioner according to claim 30, wherein when the second switching mechanism (70) is in the fourth closed position, the first switching mechanism (60) is in the third open position.

32. A cabinet air conditioner according to claim 27, characterized in that the lower edge of the three-way air duct (52) is of annular structure, and the annular chamber formed by the lower edge of the three-way air duct (52) is communicated with the fourth air duct (24).

33. A cabinet air conditioner according to claim 28, characterized in that the first switching mechanism (60) comprises:

the arc-shaped sliding door (61) is arranged in the three-way air channel (52), and a first sliding rack (62) is arranged on one side of the arc-shaped sliding door (61);

a third driving motor (63), wherein the third driving motor (63) is connected with the three-way air duct (52), an output shaft of the third driving motor (63) is provided with a driving gear, and the third driving motor (63) can drive the arc-shaped sliding door (61) to be located at the third closing position or the third opening position;

and the sealing plate (64) is connected with the three-way air duct (52) so as to seal the connecting side of the third driving motor (63) and the arc-shaped sliding door (61).

34. A cabinet air conditioner according to claim 30, characterized in that the second switching mechanism (70) comprises:

a support plate (71), the support plate (71) being connected with the support bearing (51);

the sliding door (72) is arranged on the supporting plate (71) in a sliding mode along the circumferential direction of the supporting bearing (51), and a second sliding rack (721) is arranged on the sliding door (72);

the fourth driving motor (73), the fourth driving motor (73) is connected with the three-way air duct (52), a gear (731) meshed with the second sliding rack (721) is arranged on an output shaft of the fourth driving motor (73), and the fourth driving motor (73) can drive the sliding door (72) to be located at the fourth opening position or the fourth closing position.

35. A cabinet air conditioner according to claim 34, characterized in that the side of the sliding door (72) facing the supporting plate (71) is provided with at least one limit slide (722), and the supporting plate (71) is provided with rollers (711) which are matched with the limit slide (722).

36. The cabinet air conditioner of claim 1, further comprising:

the water pan (80) is connected with the second air duct switching mechanism (40) and located above the second air duct switching mechanism (40), and the second end of the heat exchanger (20) is located in the water pan (80).

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