Cabinet air conditioner indoor unit and control method

Abstract

Disclosed are a cabinet air conditioner indoor unit and a control method thereof. The cabinet air conditioner indoor unit includes a housing (1) and an air duct assembly, wherein the housing (1) encloses a housing cavity (17), an upper front air port (151) and an upper rear air port (152) are formed at the upper portion of the housing (1), and a lower front air port (111) and a lower rear air port (141) are formed at the lower portion of the housing (1); the air duct assembly is formed with an upper air duct (24), a power blade cavity and a lower air duct (25) which are successively arranged; the upper air duct (24) is in communication with the upper front air port (151), the lower air duct (25) is in communication with the lower front air port (111), and the power blade cavity is in communication with the housing cavity (17); the upper air duct (24) is in communication with the power blade cavity, the lower air duct (25) is in communication with the housing cavity (17), and the cabinet air-conditioner indoor unit is formed with an upper air outflow main path which is supplied with air from the lower front air port (111) and supplied with air from the upper front air port (151); the upper air duct (24) is in communication with the housing cavity (17), the lower air duct (25) is in communication with the power blade cavity, and the cabinet air-conditioner indoor unit is formed with a lower air outflow main path which is supplied with air from the upper front air port (151) and supplied with air from the lower front air port (111); the upper rear air port (152) and / or the lower rear air port (141) are opened, the upper air duct (24) and the lower air duct (25) are both in communication with the power blade cavity, and the cabinet air conditioner indoor unit is formed with an upper air flow passage and a lower air flow passage which simultaneously discharge air from the upper front air port (151) and the lower front air port (111). The cabinet air conditioner indoor unit improves the air comfort.

Description

[0001] The present application claims the right of priority of the patent application submitted to the State Intellectual Property Office of the People's Republic of China on 29 December 2023, with the application number 202311863033.4, and the application name of "Cabinet air conditioner indoor unit and control method thereof".Technical Field

[0002] The present application relates to the field of air-conditioning technologies, and in particular, to a cabinet air conditioner indoor unit and a control method thereof.Background

[0003] In a conventional cabinet air conditioner indoor unit, positions of an air supply port and an air return port are relatively unchanged; however, indoor air temperature is layered along a height direction, air with a high temperature is gathered at an upper side of the indoor, and air with a low temperature is gathered at a lower side of the indoor, so that these cabinet air conditioners cannot meet cooling and heating requirements at the same time, and air temperature distribution in the indoor is not uniform and comfort is poor. By taking the cabinet air conditioner indoor unit that backpedals under air supply as an example, the air supply port is located at the upper side of the indoor housing, and when cooling and blowing cold air, the cold air quickly reaches the area above the living area of the human body, and then sinks naturally, thereby achieving quick cooling and a relatively small air blowing feeling, and taking into account both the effects of temperature reduction and comfort; meanwhile, because the air return port is located at the lower part of the indoor housing, the air return temperature is low, and the energy-saving effect is good; however, when heating and blowing a hot air, due to the floating principle of the hot air, the hot air is not in the upper part of the room, and a phenomenon of heating and cooling occurs. The return air temperature is low, and more energy needs to be consumed to reach the same outlet air temperature, and the energy-saving effect is poor.

[0004] With regard to the described problem, in the prior art, an axial blower or a mixed blower is provided in an air duct to achieve reversible up-down air supply; however, when an axial blower is used, the requirements on the manufacturing costs of a motor are high, and the axial blower has the problems of short air supply distance and low air pressure; When a mixed-flow fan is used, the rotation speed of the fan is high and the noise is low.Summary

[0005] In view of this, the present application provides a cabinet air conditioner indoor unit and a control method thereof, so as to solve the problems in the art known to inventors that an air supply range is small when an axial blower or a mixed blower is provided in an air duct to achieve reversible up-and-down air supply, the temperature of indoor air changes slowly, the distribution is uneven, and the time required for a room where the indoor unit is located to reach a set temperature is long.

[0006] The present application provides a cabinet air conditioner indoor unit, including a housing and an air duct assembly, wherein the housing encloses a housing cavity, an upper front air port is formed in an upper portion of the housing, and a lower front air port is formed in a lower portion of the housing; wherein the air duct assembly is disposed in the housing cavity, and the air duct assembly is formed with an upper air duct, a power blade cavity and a lower air duct which are sequentially disposed from top to bottom; the upper air duct is in communication with an indoor space through the upper front air port, the lower air duct is in communication with the indoor space through the lower front air port, and the power blade cavity is in communication with the housing cavity through a blade cavity inlet; wherein the upper air duct is selectively in communication with the power blade cavity or the housing cavity; the lower air duct is selectively in communication with the power blade cavity or the housing cavity; wherein when the upper air duct is in communication with the power blade cavity, and the lower air duct is in communication with the housing cavity, the cabinet air conditioner indoor unit can form an upper air outflow main path, wherein air enters through the lower front air port and exits through the upper front air port; wherein when the upper air duct is in communication with the housing cavity, and the lower air duct is in communication with the power blade cavity, the cabinet air conditioner indoor unit can form a lower air outflow main path, wherein air enters through the upper front air port and exits through the lower front air port.

[0007] Further optionally, an upper rear air port is further formed in the upper portion of the housing, the upper front air port is disposed opposite to the upper rear air port in a front-rear direction, and the upper rear air port is selectively opened or closed; a lower rear air port is further formed in the lower portion of the housing, the lower front air port is disposed opposite to the lower rear air port in a front-rear direction, and the lower rear air port is selectively opened or closed; an upper portion of the housing cavity is in communication with the indoor space through the upper rear air port, and a lower portion of the housing cavity is in communication with the indoor space through the lower rear air port; when the upper rear air port is closed and the lower rear air port is opened, the cabinet air conditioner indoor unit can form a lower auxiliary air intake flow path by auxiliary air intake through the lower rear air port; when the upper rear air port is opened and the lower rear air port is closed, the cabinet air conditioner indoor unit can form an upper auxiliary air intake flow path by auxiliary air intake through the upper rear air port; when both the upper rear air port and the lower rear air port are opened, the cabinet air conditioner indoor unit can form an upper-lower simultaneous auxiliary air intake flow path by auxiliary air intake through the upper rear air port and the lower rear air port.

[0008] Further optionally, when at least one of the upper rear air port and the lower rear air port is opened, and both the upper air duct and the lower air duct are in communication with the power blade cavity, the cabinet air conditioner indoor unit can form an upper-lower simultaneous air outflow main path in which air exits through both the upper front air port and the lower front air port.

[0009] Further optionally, an A1 air port and an A2 air port are formed at a lower portion of the upper air duct; a first upper air baffle structure is movably disposed between the A1 air port and the A2 air port, the first upper air baffle structure having a first working position and a second working position, when the first upper air baffle structure is located at the first working position, the first upper air baffle structure opens the A1 air port and closes the A2 air port at the same time, so that the upper air duct is in communication with the housing cavity, and the upper air duct is not in communication with the power blade cavity; when the first upper air baffle structure is located at the second working position, the first upper air baffle structure closes the A1 air port and opens the A2 air port at the same time, so that the upper air duct is not in communication with the housing cavity, and the upper air duct is in communication with the power blade cavity; an B1 air port and a B2 air port are formed in an upper portion of the lower air duct; the first lower air baffle structure is movably disposed between the B1 air port and the B2 air port, the first lower air baffle structure has a third working position and a fourth working position, when the first lower air baffle structure is located at the third working position, the first lower air baffle structure opens the B1 air port and closes the B2 air port at the same time, so that the lower air duct is in communication with the housing cavity, and the lower air duct is not in communication with the power blade cavity; when the first lower air baffle structure is located at the fourth working position, the first lower air baffle structure closes the B1 air port and opens the B2 air port at the same time, so that the lower air duct is not in communication with the housing cavity, and the lower air duct is in communication with the power blade cavity.

[0010] Further optionally, two power blade cavities are provided, and the two power blade cavities include an upper blade cavity and a lower blade cavity that are sequentially provided from top to bottom; an upper blade is rotatably disposed in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet and an upper blade cavity outlet; the upper blade cavity inlet is in communication with the upper blade cavity and the housing cavity, and the upper blade cavity outlet is in communication with the A2 air port; a lower blade is rotatably disposed in the lower blade cavity, and the lower blade cavity is formed with a lower blade cavity inlet and a lower blade cavity outlet; the lower blade cavity inlet is in communication with the lower blade cavity and the housing cavity, and the lower blade cavity outlet is in communication with the B2 air port; when the first upper air baffle structure is located at the second working position and the first lower air baffle structure is located at the third working position, the upper blade rotates and the lower blade does not rotate, and indoor air can flow through the upper air outflow main path; when the first upper air baffle structure is located at the first working position and the first lower air baffle structure is located at the fourth working position, the upper blade does not rotate and the lower air blade rotates, and indoor air can flow through the lower air outflow main pipeline.

[0011] Further optionally, the power blade cavity is provided with one intermediate blade cavity; an intermediate blade is rotatably disposed in the intermediate blade cavity, and the intermediate blade cavity is formed with an intermediate blade cavity inlet, an intermediate blade cavity upper outlet and an intermediate blade cavity lower outlet; the intermediate blade cavity inlet is in communication with the intermediate blade cavity and the housing cavity, the intermediate blade cavity upper outlet is in communication with the A2 air port, and the intermediate blade cavity lower outlet is in communication with the B2 air port; when the first upper air baffle structure is located at the second working position and the first lower air baffle structure is located at the third working position, the intermediate blade rotates, and indoor air can flow through the upper air outflow main path; when the first upper air baffle structure is located at the first working position and the first lower air baffle structure is located at the fourth working position, the intermediate blade rotates, and indoor air can flow out of lower air outflow main path.

[0012] Further optionally, a second upper air baffle structure and a second lower air baffle structure are further rotatably disposed in the intermediate blade cavity; the second upper air baffle structure is close to the intermediate blade cavity upper outlet, and the second lower air baffle structure is close to the intermediate blade cavity lower outlet; the second upper air baffle structure and the second lower air baffle structure are both adapted to a profile line of the intermediate blade cavity; when the first upper air baffle structure is located at the second working position and the first lower air baffle structure is located at the third working position, the second lower air baffle structure cooperates with the first lower air baffle structure to guide air in the intermediate blade cavity to the upper air duct; when the first upper air baffle structure is located at the first working position and the first lower air baffle structure is located at the fourth working position, the second upper air baffle structure cooperates with the first upper air baffle structure to guide air in the intermediate blade cavity to the lower air duct.

[0013] Further optionally, two power blade cavities are provided, and the two power blade cavities include an upper blade cavity and a lower blade cavity that are sequentially provided from top to bottom; an upper blade is rotatably disposed in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet, an upper blade cavity C2 outlet and an upper blade cavity C3 outlet; the upper blade cavity inlet is in communication with the upper blade cavity and the housing cavity, and the upper blade cavity C1 outlet is in communication with the A2 air port; the lower blade cavity is rotatably provided with a lower air blade therein, and the lower blade cavity is formed with a lower blade cavity inlet, a lower blade cavity D1 outlet, a lower blade cavity D2 outlet and a lower blade cavity D3 outlet; the lower blade cavity inlet is in communication with the lower blade cavity and the housing cavity, and the lower blade cavity D1 outlet is in communication with the B2 air port; the air duct assembly is further provided with an upper auxiliary air duct, a middle auxiliary air duct and a lower auxiliary air duct which are sequentially disposed from top to bottom; the upper auxiliary air duct is communicated with the upper front air port and the upper blade cavity C2 outlet, the lower auxiliary air duct is communicated with the lower front air port and the lower blade cavity D2 outlet, and the middle auxiliary air duct is communicated with the upper blade cavity C3 outlet and the lower blade cavity D3 outlet.

[0014] Further optionally, a third upper air baffle structure is movably disposed at the upper blade cavity C2 outlet, and the third upper air baffle structure can open or close the upper blade cavity C2 outlet; a third lower air baffle structure is movably disposed at the lower blade cavity D2 outlet, and the third lower air baffle structure can open or close the lower blade cavity D2 outlet; when the third upper air baffle structure opens the upper blade cavity C2 outlet and the third lower air baffle structure closes the lower blade cavity D2 outlet, the lower air duct, the lower blade cavity, the middle auxiliary air duct, the upper blade cavity, the upper air duct and the upper auxiliary air duct are in communication with each other to form the upper air outflow main path; when the third upper air baffle structure closes the upper blade cavity C2 outlet and the third lower air baffle structure opens the lower blade cavity D2 outlet, the upper air duct, the upper blade cavity, the middle auxiliary air duct, the lower blade cavity, the lower air duct and the lower auxiliary air duct are in communication with each other to form the lower air outflow main path; when the third upper air baffle structure closes the upper blade cavity C2 outlet and the third lower air baffle structure closes the lower blade cavity D2 outlet, the upper blade cavity and the upper air duct, the lower blade cavity and the lower air duct form the upper-lower simultaneous air outflow main path.

[0015] Further optionally, two power blade cavities are provided, and the two power blade cavities include an upper blade cavity and a lower blade cavity that are sequentially provided from top to bottom; an upper blade is rotatably disposed in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet and an upper blade cavity C3 outlet; the upper blade cavity inlet is in communication with the upper blade cavity and the housing cavity, the upper blade cavity C1 outlet is in communication with the A2 air port, and a lower secondary air duct is formed between the upper blade cavity C3 outlet and the lower front air port; a fourth upper air baffle structure is movably disposed at the upper blade cavity C3 outlet, and can open or close the upper blade cavity C3 outlet; a lower blade is rotatably disposed in the lower blade cavity, and the lower blade cavity is formed with a lower blade cavity inlet, a lower blade cavity D1 outlet and a lower blade cavity D3 outlet; the lower blade cavity inlet is in communication with the lower blade cavity and the housing cavity, the lower blade cavity D1 outlet is in communication with the B2 air port, and an upper secondary air duct is formed between the lower blade cavity D3 outlet and the upper front air port; the fourth lower air baffle structure is movably disposed at the lower blade cavity D3 outlet, and can open or close the lower blade cavity D3 outlet.

[0016] Further optionally, when the first upper air baffle structure is located in the second working position, the first lower air baffle structure is located in the third working position, the upper blade cavity C3 outlet is closed, and the lower blade cavity D3 outlet is opened, the lower air duct, the upper blade cavity and the upper air duct are sequentially communicated to form the upper air outflow main path, and the lower air duct, the lower blade cavity and the upper secondary air duct are sequentially communicated to form an upper air outflow secondary path; when the first upper air baffle structure is located at the first working position, the first lower air baffle structure is located at the fourth working position, the upper blade cavity C3 outlet is open, and the lower blade cavity D3 outlet is closed, the upper air duct, the lower blade cavity, and the lower air duct are in communication sequentially to form the lower air outflow main path, and the upper air duct, the upper blade cavity, and the lower secondary air duct are in communication sequentially to form the lower air outflow secondary path.

[0017] Further optionally, the housing includes a left housing wall, the blade cavity inlet includes a left blade cavity inlet, and the left blade cavity inlet corresponds to the left housing wall; the air conditioner indoor unit further includes an indoor heat exchanger, the indoor heat exchanger includes a left heat exchanger, and the left heat exchanger is disposed between the left housing wall and the left blade cavity inlet; and / or, the housing further includes a right housing wall, the blade cavity inlet includes a right blade cavity inlet, and the right blade cavity inlet corresponds to the right housing wall; the air conditioner indoor unit further includes an indoor heat exchanger, the indoor heat exchanger includes a right heat exchanger, and the right heat exchanger is disposed between the right housing wall and the right blade cavity inlet.

[0018] Further optionally, the left heat exchanger includes an E1 heat exchange section and an F1 heat exchange section; the E1 heat exchange section extends to the upper air duct, and the F1 heat exchange section extends to the lower air duct; the E1 heat exchange section is provided above the F1 heat exchange section, and the following conditions are satisfied: 90° ≤ α ≤ 180°; and / or, the right heat exchanger includes an E2 heat exchange section and an F2 heat exchange section; the E2 heat exchange section extends towards the upper air duct, and the F2 heat exchange section extends towards the lower air duct; the E2 heat exchange section is provided above the F2 heat exchange section, and satisfies the following conditions: 90° ≤ β ≤ 180°; wherein α is an included angle between a heat exchange surface of the E1 heat exchange section and a heat exchange surface of the F1 heat exchange section, and β is an included angle between a heat exchange surface of the E2 heat exchange section and a heat exchange surface of the F2 heat exchange section.

[0019] The present application further provides a control method for a cabinet air conditioner indoor unit, the cabinet air conditioner indoor unit includes a housing and an air duct assembly, the housing encloses a housing cavity, an upper front air port and an upper rear air port are formed in an upper portion of the housing, and a lower front air port and a lower rear air port are formed in a lower portion of the housing; the air duct assembly is disposed in the housing cavity, and the air duct assembly is provided with an upper air outflow main path which is supplied with air from the lower front air port and discharged from the upper front air port, a lower air outflow main path which is supplied with air from the upper front air port and discharged from the lower front air port, and an upper-lower simultaneous air outflow main path which are supplied with air discharged from the upper front air port and the lower front air port at the same time; a lower auxiliary air intake flow path for assisting air intake from the lower rear air port, an upper auxiliary air intake flow path for assisting air intake from the upper rear air port and an upper-lower simultaneous auxiliary air intake flow path for assisting air intake from both the upper rear air port and the lower rear air port at the same time; the control method includes: determining a target running mode of the cabinet air conditioner indoor unit; comparing a current temperature of an indoor air with a first preset temperature; determining a target air outflow main path and a target auxiliary air intake flow path according to the target running mode and a comparison result of the current temperature and the first preset temperature; wherein the target running mode is a heating mode or a cooling mode, and the target air outflow main path is the upper air outflow main path or the lower air outflow main path or the upper-lower simultaneous air outflow main path; and the target auxiliary air intake flow path is the lower auxiliary air intake flow path or the upper auxiliary air intake flow path or the upper-lower simultaneous auxiliary air intake flow path.

[0020] Further optionally, the determining the target air outflow main path and the target auxiliary air intake flow path according to the target running mode and the comparison result of the current temperature and the first preset temperature includes: when the target running mode is the cooling mode and the current temperature is greater than a first preset temperature, or when the target running mode is the heating mode and the current temperature is less than the first preset temperature, the target air outflow main path is the upper-lower simultaneous air outflow main path, the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path.

[0021] Further optionally, the determining the target air outflow main path and the target auxiliary air intake flow path according to the target running mode and the comparison result of the current temperature and the first preset temperature further includes: when the target running mode is a cooling mode and the current temperature is less than or equal to the first preset temperature, calculating an upper-lower temperature difference between an indoor upper-layer air temperature and an indoor lower-layer air temperature, and comparing the upper-lower temperature difference with a second preset temperature; when the upper-lower temperature difference is greater than the second preset temperature, the target air outflow main path is the upper air outflow main path, and the target auxiliary air intake flow path is the lower auxiliary air intake flow path; when the upper-lower temperature difference is less than or equal to the second preset temperature, the target air outflow main path is the upper air outflow main path, and the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path.

[0022] Further optionally, the determining the target air outflow main path and the target auxiliary air intake flow path according to the target running mode and the comparison result of the current temperature and the first preset temperature further includes: when the target running mode is the heating mode and the current temperature is greater than or equal to the first preset temperature, calculating an upper-lower temperature difference between an indoor upper-layer air temperature and an indoor lower-layer air temperature, and comparing the upper-lower temperature difference with a third preset temperature; when the upper-lower temperature difference is greater than the third preset temperature, the target air outflow main path is the lower air outflow main path, and the target auxiliary air intake flow path is the upper auxiliary air intake flow path; when the upper-lower temperature difference is less than or equal to the third preset temperature, the target air outflow main path is the lower air outflow main path, and the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path.

[0023] Compared with the art known to inventors, the beneficial effects of the present application mainly lie in: An upper front air port is formed on the upper portion of the housing and a lower front air port is formed on the lower portion of the housing, so that the positions of the upper front air port and the lower front air port are optimized, and the distance between the upper front air port and the lower front air port is increased; during refrigeration, the upper air duct is in communication with the power blade cavity, and the lower air duct is in communication with the housing cavity; the cabinet air conditioner indoor unit forms an upper air outflow main path, and indoor air can enter the upper air outflow main path from a lower front air port and be discharged from the upper front air port; during heating, the upper air duct is in communication with the housing cavity, and the lower air duct is in communication with the power blade cavity; the cabinet air conditioner indoor unit forms a lower air outflow main path, and indoor air can enter the lower air outflow main path from the upper front air port and be discharged from the lower front air port. By making full use of the principles of cool air sinking during refrigeration and hot air floating during heating, the airflow forms a large swirling vortex in the room where the indoor unit is located, the temperature change speed of the indoor air is increased, the temperature distribution of the indoor air is uniform and the flow speed is stable, the length of time required for the room where the indoor unit is located to reach a set temperature is shortened, and the air comfort is improved.Brief Description of the Drawings

[0024] To describe the technical solutions in the embodiments of the present application or in the prior art more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description are merely exemplary, and persons of ordinary skill in the art can derive other implementing drawings from the accompanying drawings without creative efforts.

[0025] The structures, proportions, sizes, etc. , disclosed herein are intended to be compatible with the teachings contained herein, for those skilled in the art, the present invention is not intended to limit the limitations set forth herein, for this reason, there is no technical significance, and any modification of the structure, change of the proportional relationship or adjustment of the size thereof, the technical solution of the present application shall fall within the scope of the technical contents disclosed in the present application, without affecting the efficacy produced and the object of the present application. Fig. 1 is a schematic diagram of an external structure of a cabinet air conditioner indoor unit according to an embodiment of the present application; Fig. 2 is a schematic diagram of an interior structure of a cabinet air conditioner indoor unit according to a first embodiment of the present application; Figs. 3a, 3b, 3c and 3d are schematic flow paths of embodiment 1 when a cabinet air conditioner indoor unit is in an up air outlet manner according to the present application; Figs. 4a, 4b, 4c and 4d are schematic flow paths of Embodiment 1 when a cabinet air conditioner indoor unit is in a downwind supply mode according to the present application; Figs. 5a, 5b, and 5c are schematic flow paths of a first embodiment when indoor units of a cabinet air conditioner are in a top-bottom simultaneous air outlet manner according to the present application; Fig. 6 is a schematic diagram of an interior structure of a second embodiment of a cabinet air conditioner indoor unit according to the present application; Figs. 7a, 7b, 7c and 7d are schematic flow paths of embodiment 2 when a cabinet air conditioner indoor unit is in an up air outlet manner according to the present application; Figs. 8a, 8b, 8c, and 8d are schematic flow paths of Embodiment 2 when a cabinet air conditioner indoor unit is in a downwind supply mode according to the present application; Figs. 9a, 9b and 9c are schematic flow paths of a second example when indoor units of a cabinet air conditioner are in a top-bottom simultaneous air outlet manner according to the present application; Fig. 10 is a schematic diagram of an interior structure of a third embodiment of a cabinet air conditioner indoor unit according to the present application; Fig. 11a, Fig. 11b, Fig. 11c, and Fig. 11d are schematic flow paths of a third embodiment when a cabinet air conditioner indoor unit is in an up air outlet manner according to the present application; Fig. 12a, Fig. 12b, Fig. 12c, and Fig. 12d are schematic flow path diagrams of Embodiment 3 when a cabinet air conditioner indoor unit is in a downwind supply mode according to the present application; Figs. 13a, 13b, and 13c are schematic flow paths of a third embodiment when indoor units of a cabinet air conditioner are in a top-bottom simultaneous air outlet manner according to the present application; Fig. 14a and Fig. 14b are internally schematic structural diagrams of a cabinet air conditioner indoor unit according to a fourth embodiment of the present application; Figs. 15a and 15b are schematic flow paths of a fourth embodiment of the cabinet air conditioner indoor unit provided by the present application when the cabinet air conditioner indoor unit is in an air supply mode (air is supplied from a lower front air port and a lower rear air port at the same time); Fig. 16a and Fig. 16b are schematic flow paths of a fourth embodiment when a cabinet air conditioner indoor unit is in an air supply mode (air is supplied from a lower front air port and an upper rear air port at the same time); Figs. 17a and 17b are schematic flow paths of a fourth embodiment when a cabinet air conditioner indoor unit is in an air supply mode (air is supplied from a lower front air port, a lower rear air port and an upper rear air port at the same time) according to the present application; Figs. 18a and 18b are schematic flow paths of a fourth embodiment of the cabinet air conditioner indoor unit provided by the present application when the cabinet air conditioner indoor unit is in an air outflow manner (air enters from a lower front air port and air exits from an upper front air port); Figs. 19a and 19b are schematic flow paths of a fourth embodiment of the cabinet air conditioner indoor unit provided by the present application when the cabinet air conditioner indoor unit is in a downwind supply mode (air is supplied from an upper front air port and an upper rear air port at the same time); Figs. 20a and 20b are schematic flow paths of a fourth embodiment when a cabinet air conditioner indoor unit is in a downwind supply mode (air is supplied from an upper front air port and a lower rear air port at the same time) according to the present application; Figs. 21a and 21b are schematic flow path diagrams of a fourth embodiment when a cabinet air conditioner indoor unit is in a downwind supply mode (air is supplied from an upper front air port, an upper rear air port and a lower rear air port at the same time) according to the present application; Fig. 22a and Fig. 22b are schematic flow paths of Embodiment 4 when the cabinet air conditioner indoor unit is in a downwind supply mode (air enters from an upper front air port and air exits from a lower front air port) according to the present application; Figs. 23a and 23b are schematic flow paths of Embodiment 4 when indoor units of a cabinet air conditioner are in an up and down simultaneous air outlet manner (air enters from an upper air port and a lower air port at the same time) according to the present application; Figs. 24a and 24b are schematic flow paths of a fourth embodiment of the cabinet air conditioner indoor unit provided by the present application when the cabinet air conditioner indoor unit is in a top-bottom simultaneous air outlet manner (air enters from an upper rear air port); Figs. 25a and 25b are schematic flow paths of a fourth embodiment when indoor units of a cabinet air conditioner are in a mode of blowing air upwards and downwards at the same time (air enters from a lower rear air port) according to the present application; In the drawings:

[0026] 1-housing; 11-front housing wall; 111-lower front air port; 12-left housing wall; 13-right housing wall; 14-rear housing wall; 141-lower rear air port; 15-top housing wall; 151-upper front air port; 152-upper rear air port; 16-base; 17-housing cavity; 21-upper blade cavity; 211-upper blade cavity C1 outlet; 212-upper blade cavity C2 outlet; 213-upper blade cavity C3 outlet; 214-upper blade; 22-lower blade cavity; 221-lower blade cavity D1 outlet; 222 - lower blade cavity D2 outlet; 223 - lower blade cavity D3 outlet; 224-lower blade; 23-intermediate blade cavity; 231-intermediate blade cavity upper outlet; 232-intermediate blade cavity lower outlet; 233-intermediate blade; 24-upper air duct; 241-A1 air port; 242-A2 air port; 25-lower air duct; 251-B1 air port; 252-B2 air port; 261-upper auxiliary air duct; 262-middle auxiliary air duct; 263-lower auxiliary air duct; 271-upper secondary air duct; 272-lower secondary air duct; 311-first upper air baffle structure; 312-second upper air baffle structure; 313-third upper air baffle structure; 314-fourth upper air baffle structure; 321-first lower air baffle structure; 322-second lower air baffle structure; 323-third lower air baffle structure; 324-fourth lower air baffle structure;4-indoor heat exchanger; 41-E1 heat exchange section; 42-F1 heat exchange section; 43-E2 heat exchange section; 44-F2 heat exchange section. Detailed Description of the Embodiments

[0027] The embodiments of the present application will be described below with reference to specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present application according to the application of the present application. Apparently, the embodiments to be described are merely a part rather than all of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without creative efforts shall belong to the scope of protection of the present application.

[0028] The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the embodiments of this application and the appended claims, the singular forms "a", "said", and "the" are intended to include plural forms as well, unless the context clearly indicates otherwise, and "plural" generally includes at least two, but does not exclude the case of including at least one.

[0029] It should be understood that, the term "and / or" used herein is only an association relationship for describing associated objects, and indicates that three relationships may exist. For example, A and / or B may indicate three cases: A exists separately, A and B exist simultaneously, and B exists separately. In addition, the character " / " in this specification generally indicates that the associated objects are in an "or" relationship.

[0030] It should be noted that the terms "comprise", "include", and any other variation thereof are intended to cover a non-exclusive inclusion, so that a commodity or a system that includes a series of elements not only includes those elements, but also includes other elements that are not explicitly listed, or further includes elements that are inherent to the commodity or the system. Without further limitation, an element defined by the sentence "include a... " does not exclude other same elements existing in a commodity or a system that includes the element.

[0031] When the indoor unit of a conventional cabinet air conditioner supplies hot air during heating, due to the floating principle of hot air, the hot air stays in the upper part of the room and cannot come down, resulting in a phenomenon of upper heat and lower coolness; the return air temperature is low, and more energy needs to be consumed to reach the same air outlet temperature, so that the energy-saving effect is poor; for the above problem, the prior art achieves reversible up-down air supply by providing an axial flow fan or a mixed flow fan in an air duct; however, when an axial flow fan is used, the requirements on the manufacturing cost of a motor are high, and the axial flow fan has the problems of short air supply distance and small wind pressure; when a mixed flow fan is used, the fan rotation speed is high, the noise is large and the efficiency is low;

[0032] As shown in FIG. 1, the present application creatively provides a cabinet air conditioner indoor unit, including a housing 1 and an air duct assembly, wherein the housing 1 encloses a housing cavity 17, an upper front air port 151 is formed in an upper portion of the housing 1, and a lower front air port 111 is formed in a lower portion of the housing 1; the air duct assembly is disposed in the housing cavity 17, and the air duct assembly is formed with an upper air duct 24, a power blade cavity and a lower air duct 25 which are sequentially disposed from top to bottom; the upper air duct 24 is in communication with the indoor space through the upper front air port 151, the lower air duct 25 is in communication with the indoor space through the lower front air port 111, and the power blade cavity is in communication with the housing cavity 17 through a blade cavity inlet; the upper air duct 24 is selectively in communication with the power blade cavity or the housing cavity 17; the lower air duct 25 is selectively in communication with the power blade cavity or the housing cavity 17; an upper front air port 151 is formed in the upper portion of the housing 1 and a lower front air port 111 is formed in the lower portion of the housing 1, which optimizes the positions of the upper front air port 151 and the lower front air port 111, and increases the distance between the upper front air port 151 and the lower front air port 111; during cooling, the upper air duct 24 is in communication with the power blade cavity and the lower air duct 25 is in communication with the housing cavity 17, and the cabinet air conditioner indoor unit can form an upper air outflow main path, wherein indoor air can enter the upper air outflow main path through the lower front air port 111 and be discharged through the upper front air port 151; during heating, the upper air duct 24 is in communication with the housing cavity 17 and the lower air duct 25 is in communication with the power blade cavity, and the cabinet air conditioner indoor unit can form a lower air outflow main path, wherein indoor air can enter the lower air outflow main path through the upper front air port 151 and be discharged through the lower front air port 111; by making full use of the principles of cool air sinking during cooling and hot air floating during heating, the airflow forms a large swirling vortex in the room where the indoor unit is located, the temperature change speed of the indoor air is increased, the temperature distribution of the indoor air is uniform and the flow speed is stable, the length of time required for the room where the indoor unit is located to reach a set temperature is shortened, and the air comfort is improved.

[0033] Specifically, the housing 1 includes a housing top wall 15 and a housing front side wall 11, the housing top wall 15 is formed with the upper front air port 151, and a lower portion of the housing front side wall 11 is formed with the lower front air port 111; an upper portion of the upper air duct 24 is in communication with the indoor space through the upper front air port 151, a lower portion of the lower air duct 25 is in communication with the indoor space through the lower front air port 111; a lower portion of the upper air duct 24 is selectively in communication with the power blade cavity or the housing cavity 17; an upper portion of the lower air duct 25 is selectively in communication with the power blade cavity or the housing cavity 17.

[0034] For the problem of insufficient air intake volume, the present embodiment proposes that an upper rear air port 152 is further formed in an upper portion of the housing 1, the upper front air port 151 and the upper rear air port 152 are disposed opposite to each other in a front-rear direction, and the upper rear air port 152 is selectively opened or closed; a lower rear air port 141 is further formed in a lower portion of the housing 1, the lower front air port 111 and the lower rear air port 141 are disposed opposite to each other in a front-rear direction, and the lower rear air port 141 is selectively opened or closed; an upper portion of the housing cavity 17 is in communication with the indoor space through the upper rear air port 152, and a lower portion of the housing cavity 17 is in communication with the indoor space through the lower rear air port 141; when the upper rear air port 152 is closed and the lower rear air port 141 is opened, the cabinet air conditioner indoor unit can form a lower auxiliary air inflow path assisted by air intake from the lower rear air port 141; when the upper rear air port 152 is opened and the lower rear air port 141 is closed, the cabinet air conditioner indoor unit can form an upper auxiliary air inflow path assisted by air intake from the upper rear air port 152; when both the upper rear air port 152 and the lower rear air port 141 are opened, the cabinet air conditioner indoor unit can form an upper-lower simultaneous auxiliary air inflow path assisted by simultaneous air intake from both the upper rear air port 152 and the lower rear air port 141; the upper auxiliary air inflow path, the lower auxiliary air inflow path and the upper-lower simultaneous auxiliary air inflow path increase the air intake volume and reduce the air intake resistance; reduce the noise of the indoor unit, and ensure that the air outflow volume and the noise meet requirements; the auxiliary air inflow path is combined with the mainstream path, so that different air inlet and outlet modes can be realized, specifically: the upper auxiliary air inflow path is combined with the upper air outflow main path, and the cabinet air conditioner indoor unit can realize a first air inlet and outlet mode in which air enters simultaneously from the upper rear air port 152 and the lower front air port 111 and is discharged from the upper front air port 151; the lower auxiliary air inflow path is combined with the upper air outflow main path, and the cabinet air conditioner indoor unit can realize a second air inlet and outlet mode in which air enters simultaneously from the lower rear air port 141 and the lower front air port 111 and is discharged from the upper front air port 151; the upper-lower simultaneous auxiliary air inflow path is combined with the upper air outflow main path, and the cabinet air conditioner indoor unit can realize a third air inlet and outlet mode in which air enters simultaneously from the upper rear air port 152, the lower rear air port 141 and the lower front air port 111 and is discharged from the upper front air port 151; the upper auxiliary air inflow path is combined with the lower air outflow main path, and the cabinet air conditioner indoor unit can realize a fourth air inlet and outlet mode in which air enters simultaneously from the upper rear air port 152 and the upper front air port 151 and is discharged from the lower front air port 111; the lower auxiliary air inflow path is combined with the lower air outflow main path, and the cabinet air conditioner indoor unit can realize a fifth air inlet and outlet mode in which air enters simultaneously from the lower rear air port 141 and the upper front air port 151 and is discharged from the lower front air port 111; the upper-lower simultaneous auxiliary air inflow path is combined with the lower air outflow main path, and the cabinet air conditioner indoor unit can realize a sixth air inlet and outlet mode in which air enters simultaneously from the upper rear air port 152, the lower rear air port 141 and the upper front air port 151 and is discharged from the lower front air port 111.

[0035] Specifically, the housing top wall 15 is further formed with an upper rear air port 152; the housing 1 further includes a housing rear side wall 14, the housing front side wall 11 and the housing rear side wall 14 are disposed opposite to each other in a front-rear direction, and both the housing front side wall 11 and the housing rear side wall 14 are connected to the housing top wall 15; a lower portion of the housing rear side wall 14 is formed with a lower rear air port 141.

[0036] Further, when at least one of the upper rear air port 152 and the lower rear air port 141 is opened, and both the upper air duct 24 and the lower air duct 25 are in communication with the power blade cavity, the cabinet air conditioner indoor unit can form an upper-lower simultaneous air outflow mainstream path in which air is simultaneously discharged from the upper front air port 151 and the lower front air port 111.

[0037] In addition, the housing 1 includes a housing left side wall 12, the blade cavity inlet includes a left blade cavity inlet, and the left blade cavity inlet corresponds to the housing left side wall 12; the air conditioner indoor unit further includes an indoor heat exchanger 4 disposed in the housing cavity 17, a filtering device is disposed on an air inlet face of the indoor heat exchanger 4 for filtering air in the housing cavity 17; the indoor heat exchanger 4 includes a left heat exchanger, and the left heat exchanger is disposed between the housing left side wall 12 and the left blade cavity inlet;

[0038] The housing 1 further includes a housing right side wall 13, the blade cavity inlet includes a right blade cavity inlet, and the right blade cavity inlet corresponds to the housing right side wall 13; the air conditioner indoor unit further includes an indoor heat exchanger 4, the indoor heat exchanger 4 includes a right heat exchanger, and the right heat exchanger is disposed between the housing right side wall 13 and the right blade cavity inlet.

[0039] Further, the left heat exchanger includes an E1 heat exchange section 41 and an F1 heat exchange section 42; the E1 heat exchange section 41 extends to the upper air duct 24, and the F1 heat exchange section 42 extends to the lower air duct 25; the E1 heat-exchanging section 41 is provided above the F1 heat-exchanging section 42, and the following conditions are satisfied: 90° ≤α≤ 180°; the right heat exchanger includes an E2 heat exchange section 43 and an F2 heat exchange section 44; the heat exchange section 43 of E2 extends to the upper air duct 24, and the heat exchange section 44 of F2 extends to the lower air duct 25; the E2 heat-exchanging section 43 is provided above the F2 heat-exchanging section 44, and satisfies the following conditions: 90° ≤ β ≤ 180°; wherein α is an included angle between a heat exchange surface of the E1 heat exchange section 41 and a heat exchange surface of the F1 heat exchange section 42, and β is an included angle between a heat exchange surface of the E2 heat exchange section 43 and a heat exchange surface of the F2 heat exchange section 44.

[0040] A front housing wall 11, a left housing wall 12, a rear housing wall 14 and a right housing wall 13 are sequentially connected to form a housing cavity 17; the housing 1 further includes a base 16, and the base 16 is disposed at the bottom of the front housing wall 11, the left housing wall 12, the rear housing wall 14 and the right housing wall 13, the top housing wall 15 is disposed on the top of the front housing wall 11, the left housing wall 12, the rear housing wall 14 and the right housing wall 13, the front housing wall 11, the left housing wall 12, the rear housing wall 14, and the right housing wall 13 are connected in sequence, and form a housing cavity 17 with the top housing wall 15 and the base 16.Example 1

[0041] As shown in FIG. 2 to FIG. 5c, in the present embodiment, two power blade cavities are provided, the two power blade cavities include an upper blade cavity 21 and a lower blade cavity 22, and the upper air duct 24, the upper blade cavity 21, the lower blade cavity 22 and the lower air duct 25 are sequentially disposed from top to bottom; an A1 air port 241 and an A2 air port 242 are formed at a lower portion of the upper air duct 24, and the A1 air port 241 is in communication with the upper air duct 24 and the housing cavity 17; an upper blade 214 is rotatably disposed in the upper blade cavity 21, and the upper blade cavity 21 is formed with an upper blade cavity inlet and an upper blade cavity C1 outlet 211; the upper blade cavity inlet is in communication with the upper blade cavity 21 and the housing cavity 17, and the upper blade cavity C1 outlet 211 is in communication with the A2 air port 242; a first upper air baffle structure 311 is rotatably disposed between the A1 air port 241 and the A2 air port 242, the first upper air baffle structure 311 has a first working position and a second working position, when the first upper air baffle structure 311 is in the first working position, the first upper air baffle structure 311 opens the A1 air port 241 while closing the A2 air port 242, so that the upper air duct 24 is in communication with the housing cavity 17, and the upper air duct 24 is not in communication with the upper blade cavity 21; when the first upper air baffle structure 311 is in the second working position, the first upper air baffle structure 311 closes the A1 air port 241 and opens the A2 air port 242 at the same time, so that the upper air duct 24 is not in communication with the housing cavity 17 and the upper air duct 24 is in communication with the upper blade cavity 21; a B1 air port 251 and a B2 air port 252 are formed at an upper portion of the lower air duct 25, and the B1 air port 251 is in communication with the lower air duct 25 and the housing cavity 17; a lower blade 224 is rotatably disposed in the lower blade cavity 22, and the lower blade cavity 22 is formed with a lower blade cavity inlet and a lower blade cavity D1 outlet 221; the lower blade cavity inlet is in communication with the lower blade cavity 22 and the housing cavity 17, and the lower blade cavity D1 outlet 221 is in communication with the B2 air port 252; a first lower air baffle structure 321 is rotatably disposed between the B1 air port 251 and the B2 air port 252, the first lower air baffle structure 321 has a third working position and a fourth working position, when the first lower air baffle structure 321 is in the third working position, the first lower air baffle structure 321 opens the B1 air port 251 while closing the B2 air port 252, so that the lower air duct 25 is in communication with the housing cavity 17 and the lower air duct 25 is not in communication with the lower blade cavity 22; when the first lower air baffle structure 321 is in the fourth working position, the first lower air baffle structure 321 closes the B1 air port 251 and opens the B2 air port 252 at the same time, so that the lower air duct 25 is not in communication with the housing cavity 17 and the lower air duct 25 is in communication with the lower blade cavity 22; preferably, both the first upper air baffle structure 311 and the first lower air baffle structure 321 are baffles; when the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the upper blade 214 rotates and the lower blade 224 does not rotate, and indoor air can flow through the upper air outflow main path; when the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the upper blade 214 does not rotate and the lower blade 224 rotates, and indoor air can flow through the lower air outflow main path.

[0042] Specifically, the upper air outflow mode includes the following four modes: (1) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the upper blade 214 rotates, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the upper blade 214 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the upper blade 214 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the upper blade 214 rotates, indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; by means of the above four upper air outflow modes, different cooling demands can be satisfied.

[0043] The lower air outflow mode includes the following four modes: (1) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the lower blade 224 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (2) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the lower blade 224 rotates, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the lower blade 224 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the lower blade 224 rotates, indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; by means of the above four lower air outflow modes, different heating demands can be satisfied. the upper-lower simultaneous air outflow mode includes the following three modes: (1) when both the upper rear air port 152 and the lower rear air port 141 are opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the fourth working position, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; a part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the fourth working position, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; a part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (3) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the fourth working position, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; a part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111.

[0044] A side wall of a lower portion of the upper air duct 24 is formed with an A1 air port 241, and a lower end of the upper air duct 24 is formed with an A2 air port 242; an upper side wall of the lower air duct 25 is formed with a B1 air port 251, and an upper end of the lower air duct 25 is formed with a B2 air port 252.Example 2

[0045] As shown in FIG. 6 to FIG. 9c, in the present embodiment, one power blade cavity is provided and the power blade cavity is an intermediate blade cavity 23, and the upper air duct 24, the intermediate blade cavity 23 and the lower air duct 25 are sequentially disposed from top to bottom; an A1 air port 241 and an A2 air port 242 are formed at a lower portion of the upper air duct 24, and the A1 air port 241 is in communication with the upper air duct 24 and the housing cavity 17; a B1 air port 251 and a B2 air port 252 are formed at an upper portion of the lower air duct 25, and the B1 air port 251 is in communication with the lower air duct 25 and the housing cavity 17; an intermediate blade 233 is rotatably disposed in the intermediate blade cavity 23, and the intermediate blade cavity 23 is formed with an intermediate blade cavity inlet, an intermediate blade cavity upper outlet 231 and an intermediate blade cavity lower outlet 232; the intermediate blade cavity inlet is in communication with the intermediate blade cavity 23 and the housing cavity 17, the intermediate blade cavity upper outlet 231 is in communication with the A2 air port 242, and the intermediate blade cavity lower outlet 232 is in communication with the B2 air port 252; a first upper air baffle structure 311 is rotatably disposed between the A1 air port 241 and the A2 air port 242, the first upper air baffle structure 311 has a first working position and a second working position, when the first upper air baffle structure 311 is in the first working position, the first upper air baffle structure 311 opens the A1 air port 241 while closing the A2 air port 242, so that the upper air duct 24 is in communication with the housing cavity 17 and the upper air duct 24 is not in communication with the power blade cavity; when the first upper air baffle structure 311 is in the second working position, the first upper air baffle structure 311 closes the A1 air port 241 and opens the A2 air port 242 at the same time, so that the upper air duct 24 is not in communication with the housing cavity 17 and the upper air duct 24 is in communication with the power blade cavity; a first lower air baffle structure 321 is rotatably disposed between the B1 air port 251 and the B2 air port 252, the first lower air baffle structure 321 has a third working position and a fourth working position, when the first lower air baffle structure 321 is in the third working position, the first lower air baffle structure 321 opens the B1 air port 251 while closing the B2 air port 252, so that the lower air duct 25 is in communication with the housing cavity 17 and the lower air duct 25 is not in communication with the power blade cavity; when the first lower air baffle structure 321 is in the fourth working position, the first lower air baffle structure 321 closes the B1 air port 251 and opens the B2 air port 252 at the same time, so that the lower air duct 25 is not in communication with the housing cavity 17 and the lower air duct 25 is in communication with the power blade cavity; when the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the intermediate blade 233 rotates, and indoor air can flow through the upper air outflow main path; when the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, and indoor air can flow through the lower air outflow main path.

[0046] Further, a second upper air baffle structure 312 and a second lower air baffle structure 322 are further rotatably disposed in the intermediate blade cavity 23; the second upper air baffle structure 312 is close to the intermediate blade cavity upper outlet 231, and the second lower air baffle structure 322 is close to the intermediate blade cavity lower outlet 232; both the second upper air baffle structure 312 and the second lower air baffle structure 322 are adapted to a profile line of the intermediate blade cavity 23; preferably, both the second upper air baffle structure 312 and the second lower air baffle structure 322 are baffles; when the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the second lower air baffle structure 322 cooperates with the first lower air baffle structure 321 to guide air in the intermediate blade cavity 23 to the upper air duct 24; when the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the second upper air baffle structure 312 cooperates with the first upper air baffle structure 311 to guide air in the intermediate blade cavity 23 to the lower air duct 25.

[0047] Specifically, the upper air outflow mode includes the following four modes: (1) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the intermediate blade 233 rotates, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the intermediate blade 233 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the intermediate blade 233 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, the intermediate blade 233 rotates, indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; by means of the above four upper air outflow modes, different cooling demands can be satisfied.

[0048] The lower air outflow mode includes the following four modes: (1) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (2) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, and the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; air in the housing cavity 17 then enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, then enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; by means of the above four lower air outflow modes, different heating demands can be satisfied.

[0049] The upper-lower simultaneous air outflow mode includes the following three modes: (1) when both the upper rear air port 152 and the lower rear air port 141 are opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; air in the housing cavity 17 enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, a part of air enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; another part of air enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; air in the housing cavity 17 enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, a part of air enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; another part of air enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111; (3) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, and the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the fourth working position, the intermediate blade 233 rotates, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; air in the housing cavity 17 enters the intermediate blade cavity 23 through the intermediate blade cavity inlet, a part of air enters the upper air duct 24 through the A2 air port 242, and is discharged through the upper front air port 151; another part of air enters the lower air duct 25 through the B2 air port 252, and is discharged through the lower front air port 111.

[0050] A side wall of a lower portion of the upper air duct 24 is formed with an A1 air port 241, and a lower end of the upper air duct 24 is formed with an A2 air port 242; an upper side wall of the lower air duct 25 is formed with a B1 air port 251, and an upper end of the lower air duct 25 is formed with a B2 air port 252.Example 3

[0051] As shown in FIG. 10 to FIG. 13c, in the present embodiment, an A1 air port 241 and an A2 air port 242 are formed at a lower portion of the upper air duct 24; two power blade cavities are provided, the two power blade cavities include an upper blade cavity 21 and a lower blade cavity 22 which are sequentially disposed from top to bottom; an upper blade 214 is rotatably disposed in the upper blade cavity 21, and the upper blade cavity 21 is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet 211, an upper blade cavity C2 outlet 212 and an upper blade cavity C3 outlet 213; the upper blade cavity inlet is in communication with the upper blade cavity 21 and the housing cavity 17, and the upper blade cavity C1 outlet 211 is in communication with the A2 air port 242; a first upper air baffle structure 311 is rotatably disposed between the A1 air port 241 and the A2 air port 242, the first upper air baffle structure 311 has a first working position and a second working position, when the first upper air baffle structure 311 is in the first working position, the first upper air baffle structure 311 opens the A1 air port 241 while closing the A2 air port 242, so that the upper air duct 24 is in communication with the housing cavity 17 and the upper air duct 24 is not in communication with the upper blade cavity 21; when the first upper air baffle structure 311 is in the second working position, the first upper air baffle structure 311 closes the A1 air port 241 and opens the A2 air port 242 at the same time, so that the upper air duct 24 is not in communication with the housing cavity 17 and the upper air duct 24 is in communication with the upper blade cavity 21; a B1 air port 251 and a B2 air port 252 are formed at an upper portion of the lower air duct 25; a lower blade 224 is rotatably disposed in the lower blade cavity 22, and the lower blade cavity 22 is formed with a lower blade cavity inlet, a lower blade cavity D1 outlet 221, a lower blade cavity D2 outlet 222 and a lower blade cavity D3 outlet 223; the lower blade cavity inlet is in communication with the lower blade cavity 22 and the housing cavity 17, and the lower blade cavity D1 outlet 221 is in communication with the B2 air port 252; a first lower air baffle structure 321 is rotatably disposed between the B1 air port 251 and the B2 air port 252, the first lower air baffle structure 321 has a third working position and a fourth working position, when the first lower air baffle structure 321 is in the third working position, the first lower air baffle structure 321 opens the B1 air port 251 while closing the B2 air port 252, so that the lower air duct 25 is in communication with the housing cavity 17 and the lower air duct 25 is not in communication with the lower blade cavity 22; when the first lower air baffle structure 321 is in the fourth working position, the first lower air baffle structure 321 closes the B1 air port 251 and opens the B2 air port 252 at the same time, so that the lower air duct 25 is not in communication with the housing cavity 17 and the lower air duct 25 is in communication with the power blade cavity. , the air duct assembly is further formed with an upper auxiliary air duct 261, a middle auxiliary air duct 262 and a lower auxiliary air duct 263 which are sequentially disposed from top to bottom; the upper auxiliary air duct 261 is in communication with the upper front air port 151 and the upper blade cavity C2 outlet 212, the lower auxiliary air duct 263 is in communication with the lower front air port 111 and the lower blade cavity D2 outlet 222, and the middle auxiliary air duct 262 is in communication with the upper blade cavity C3 outlet 213 and the lower blade cavity D3 outlet 223; a third upper air baffle structure 313 is rotatably disposed at the upper blade cavity C2 outlet 212, and the third upper air baffle structure 313 can open or close the upper blade cavity C2 outlet 212; when the upper blade cavity C2 outlet 212 is opened, the upper blade cavity 21 is in communication with the upper auxiliary air duct 261, and when the upper blade cavity C2 outlet 212 is closed, the upper blade cavity 21 is not in communication with the upper auxiliary air duct 261; a third lower air baffle structure 323 is rotatably disposed at the lower blade cavity D2 outlet 222, and the third lower air baffle structure 323 can open or close the lower blade cavity D2 outlet 222; when the lower blade cavity D2 outlet 222 is opened, the lower blade cavity 22 is in communication with the lower auxiliary air duct 263, and when the lower blade cavity D2 outlet 222 is closed, the lower blade cavity 22 is not in communication with the lower auxiliary air duct 263; when the third upper air baffle structure 313 opens the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, the lower air duct 25, the lower blade cavity 22, the middle auxiliary air duct 262, the upper blade cavity 21, the upper air duct 24 and the upper auxiliary air duct 261 are in communication with each other to form the upper air outflow main path; when the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 opens the lower blade cavity D2 outlet 222, the upper air duct 24, the upper blade cavity 21, the middle auxiliary air duct 262, the lower blade cavity 22, the lower air duct 25 and the lower auxiliary air duct 263 are in communication with each other to form the lower air outflow main path; when the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, the upper blade cavity 21 and the upper air duct 24, the lower blade cavity 22 and the lower air duct 25 form the upper-lower simultaneous air outflow main path; preferably, both the third upper air baffle structure 313 and the third lower air baffle structure 323 are baffles.

[0052] Specifically, the upper air outflow mode includes the following four modes: (1) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the third working position, the third upper air baffle structure 313 opens the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the middle auxiliary air duct 262 through the lower blade cavity D2 outlet 222, and enters the upper blade cavity 21; another part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet; a part of air in the upper blade cavity 21 is discharged through the A2 air port 242, the upper air duct 24 and the upper front air port 151; another part of air in the upper blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary air duct 261 and the upper front air port 151; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the third working position, the third upper air baffle structure 313 opens the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the middle auxiliary air duct 262 through the lower blade cavity D2 outlet 222, and enters the upper blade cavity 21; another part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet; a part of air in the upper blade cavity 21 is discharged through the A2 air port 242, the upper air duct 24 and the upper front air port 151; another part of air in the upper blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary air duct 261 and the upper front air port 151; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the third working position, the third upper air baffle structure 313 opens the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the middle auxiliary air duct 262 through the lower blade cavity D2 outlet 222, and enters the upper blade cavity 21; another part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet; a part of air in the upper blade cavity 21 is discharged through the A2 air port 242, the upper air duct 24 and the upper front air port 151; another part of air in the upper blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary air duct 261 and the upper front air port 151; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the third working position, the third upper air baffle structure 313 opens the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the middle auxiliary air duct 262 through the lower blade cavity D2 outlet 222, and enters the upper blade cavity 21; another part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet; a part of air in the upper blade cavity 21 is discharged through the A2 air port 242, the upper air duct 24 and the upper front air port 151; another part of air in the upper blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary air duct 261 and the upper front air port 151; by means of the above four upper air outflow modes, different cooling demands can be satisfied.

[0053] The lower air outflow mode includes the following four modes: (1) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, the first upper air baffle structure 311 is in the first working position, the first lower air baffle structure 321 is in the fourth working position, the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 opens the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 151; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the middle auxiliary air duct 262 through the upper blade cavity C2 outlet 212, and enters the lower blade cavity 22; another part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet; a part of air in the lower blade cavity 22 is discharged through the B2 air port 252, the lower air duct 25 and the lower front air port 111; another part of air in the lower blade cavity 22 is discharged through the lower blade cavity D2 outlet 222, the lower auxiliary air duct 263 and the lower front air port 111; (2) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, the first upper air baffle structure 311 is in the first working position, the first lower air baffle structure 321 is in the fourth working position, the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 opens the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the middle auxiliary air duct 262 through the upper blade cavity C2 outlet 212, and enters the lower blade cavity 22; another part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet; a part of air in the lower blade cavity 22 is discharged through the B2 air port 252, the lower air duct 25 and the lower front air port 111; another part of air in the lower blade cavity 22 is discharged through the lower blade cavity D2 outlet 222, the lower auxiliary air duct 263 and the lower front air port 111; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, the first upper air baffle structure 311 is in the first working position, the first lower air baffle structure 321 is in the fourth working position, the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 opens the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the middle auxiliary air duct 262 through the upper blade cavity C2 outlet 212, and enters the lower blade cavity 22; another part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet; a part of air in the lower blade cavity 22 is discharged through the B2 air port 252, the lower air duct 25 and the lower front air port 111; another part of air in the lower blade cavity 22 is discharged through the lower blade cavity D2 outlet 222, the lower auxiliary air duct 263 and the lower front air port 111; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, the first upper air baffle structure 311 is in the first working position, the first lower air baffle structure 321 is in the fourth working position, the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 opens the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the middle auxiliary air duct 262 through the upper blade cavity C2 outlet 212, and enters the lower blade cavity 22; another part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet; a part of air in the lower blade cavity 22 is discharged through the B2 air port 252, the lower air duct 25 and the lower front air port 111; another part of air in the lower blade cavity 22 is discharged through the lower blade cavity D2 outlet 222, the lower auxiliary air duct 263 and the lower front air port 111; by means of the above four lower air outflow modes, different heating demands can be satisfied.

[0054] The upper-lower simultaneous air outflow mode includes the following three modes: (1) when both the upper rear air port 152 and the lower rear air port 141 are opened, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the fourth working position, the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; a part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the upper blade cavity C1 outlet 211 and the A2 air port 242, and is discharged through the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the lower blade cavity D1 outlet 221 and the B2 air port 252, and is discharged through the lower front air port 111; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the fourth working position, the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; a part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the upper blade cavity C1 outlet 211 and the A2 air port 242, and is discharged through the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the lower blade cavity D1 outlet 221 and the B2 air port 252, and is discharged through the lower front air port 111; (3) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the fourth working position, the third upper air baffle structure 313 closes the upper blade cavity C2 outlet 212 and the third lower air baffle structure 323 closes the lower blade cavity D2 outlet 222, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; a part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper air duct 24 through the upper blade cavity C1 outlet 211 and the A2 air port 242, and is discharged through the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the lower air duct 25 through the lower blade cavity D1 outlet 221 and the B2 air port 252, and is discharged through the lower front air port 111.

[0055] A side wall of a lower portion of the upper air duct 24 is formed with an A1 air port 241, and a lower end of the upper air duct 24 is formed with an A2 air port 242; an upper side wall of the lower air duct 25 is formed with a B1 air port 251, and an upper end of the lower air duct 25 is formed with a B2 air port 252.Example 4

[0056] As shown in FIG. 14a to FIG. 25b, an A1 air port 241 and an A2 air port 242 are formed at a lower portion of the upper air duct 24; two power blade cavities are provided, the two power blade cavities include an upper blade cavity 21 and a lower blade cavity 22 which are sequentially disposed from top to bottom; an upper blade 214 is rotatably disposed in the upper blade cavity 21, and the upper blade cavity 21 is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet 211 and an upper blade cavity C3 outlet 213; the upper blade cavity inlet is in communication with the upper blade cavity 21 and the housing cavity 17, the upper blade cavity C1 outlet 211 is in communication with the A2 air port 242, a lower secondary air duct 272 is formed between the upper blade cavity C3 outlet 213 and the lower front air port 111; a fourth upper air baffle structure 314 is rotatably disposed at the upper blade cavity C3 outlet 213, and the fourth upper air baffle structure 314 can open or close the upper blade cavity C3 outlet 213; a first upper air baffle structure 311 is rotatably disposed between the A1 air port 241 and the A2 air port 242, the first upper air baffle structure 311 has a first working position and a second working position, when the first upper air baffle structure 311 is in the first working position, the first upper air baffle structure 311 opens the A1 air port 241 while closing the A2 air port 242, so that the upper air duct 24 is in communication with the housing cavity 17 and the upper air duct 24 is not in communication with the upper blade cavity 21; when the first upper air baffle structure 311 is in the second working position, the first upper air baffle structure 311 closes the A1 air port 241 and opens the A2 air port 242 at the same time, so that the upper air duct 24 is not in communication with the housing cavity 17 and the upper air duct 24 is in communication with the upper blade cavity 21; a B1 air port 251 and a B2 air port 252 are formed at an upper portion of the lower air duct 25; a lower blade 224 is rotatably disposed in the lower blade cavity 22, and the lower blade cavity 22 is formed with a lower blade cavity inlet, a lower blade cavity D3 outlet 223 and a lower blade cavity D1 outlet 221; the lower blade cavity inlet is in communication with the lower blade cavity 22 and the housing cavity 17, the lower blade cavity D1 outlet 221 is in communication with the B2 air port 252, an upper secondary air duct 271 is formed between the lower blade cavity D3 outlet 223 and the upper front air port 151; a fourth lower air baffle structure 324 is rotatably disposed at the lower blade cavity D3 outlet 223, and the fourth lower air baffle structure 324 can open or close the lower blade cavity D3 outlet 223; preferably, both the fourth upper air baffle structure 314 and the fourth lower air baffle structure 324 are baffles; a first lower air baffle structure 321 is rotatably disposed between the B1 air port 251 and the B2 air port 252, the first lower air baffle structure 321 has a third working position and a fourth working position, when the first lower air baffle structure 321 is in the third working position, the first lower air baffle structure 321 opens the B1 air port 251 while closing the B2 air port 252, so that the lower air duct 25 is in communication with the housing cavity 17 and the lower air duct 25 is not in communication with the lower blade cavity 22; when the first lower air baffle structure 321 is in the fourth working position, the first lower air baffle structure 321 closes the B1 air port 251 and opens the B2 air port 252 at the same time, so that the lower air duct 25 is not in communication with the housing cavity 17 and the lower air duct 25 is in communication with the lower blade cavity 22.

[0057] Further, when the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the third working position, the upper blade cavity C3 outlet 213 is closed and the lower blade cavity D3 outlet 223 is opened, the lower air duct 25, the upper blade cavity 21 and the upper air duct 24 are sequentially in communication to form the upper air outflow main path, and the lower air duct 25, the lower blade cavity 22 and the upper secondary air duct 271 are sequentially in communication to form the upper air outflow secondary path; when the first upper air baffle structure 311 is in the first working position, the first lower air baffle structure 321 is in the fourth working position, the upper blade cavity C3 outlet 213 is opened and the lower blade cavity D3 outlet 223 is closed, the upper air duct 24, the lower blade cavity 22 and the lower air duct 25 are sequentially in communication to form the lower air outflow main path, and the upper air duct 24, the upper blade cavity 21 and the lower secondary air duct 272 are sequentially in communication to form the lower air outflow secondary path.

[0058] Specifically, the upper air outflow mode includes the following four modes: (1) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, and the upper blade cavity C3 outlet 213 is closed and the lower blade cavity D3 outlet 223 is opened, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D3 outlet 223, the upper secondary air duct 271 and the upper front air port 151; another part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C1 outlet 211, the upper air duct 24 and the upper front air port 151; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, and the upper blade cavity C3 outlet 213 is closed and the lower blade cavity D3 outlet 223 is opened, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D3 outlet 223, the upper secondary air duct 271 and the upper front air port 151; another part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C1 outlet 211, the upper air duct 24 and the upper front air port 151; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, and the upper blade cavity C3 outlet 213 is closed and the lower blade cavity D3 outlet 223 is opened, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D3 outlet 223, the upper secondary air duct 271 and the upper front air port 151; another part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C1 outlet 211, the upper air duct 24 and the upper front air port 151; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, the first upper air baffle structure 311 is in the second working position and the first lower air baffle structure 321 is in the third working position, and the upper blade cavity C3 outlet 213 is closed and the lower blade cavity D3 outlet 223 is opened, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower front air port 111 enters the lower air duct 25 through the lower front air port 111, and then enters the housing cavity 17 through the B1 air port 251; a part of air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D3 outlet 223, the upper secondary air duct 271 and the upper front air port 151; another part of air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C1 outlet 211, the upper air duct 24 and the upper front air port 151; by means of the above four upper air outflow modes, different cooling demands can be satisfied.

[0059] The lower air outflow mode includes the following four modes: (1) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, and the upper blade cavity C3 outlet 213 is opened and the lower blade cavity D3 outlet 223 is closed, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C3 outlet 213, the lower secondary air duct 272 and the lower front air port 111; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D1 outlet 221, the lower air duct 25 and the lower front air port 111; (2) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, and the upper blade cavity C3 outlet 213 is opened and the lower blade cavity D3 outlet 223 is closed, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C3 outlet 213, the lower secondary air duct 272 and the lower front air port 111; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D1 outlet 221, the lower air duct 25 and the lower front air port 111; (3) when both the upper rear air port 152 and the lower rear air port 141 are opened, the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, and the upper blade cavity C3 outlet 213 is opened and the lower blade cavity D3 outlet 223 is closed, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C3 outlet 213, the lower secondary air duct 272 and the lower front air port 111; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D1 outlet 221, the lower air duct 25 and the lower front air port 111; (4) when both the upper rear air port 152 and the lower rear air port 141 are closed, the first upper air baffle structure 311 is in the first working position and the first lower air baffle structure 321 is in the fourth working position, and the upper blade cavity C3 outlet 213 is opened and the lower blade cavity D3 outlet 223 is closed, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper front air port 151 enters the upper air duct 24 through the upper front air port 151, and then enters the housing cavity 17 through the A1 air port 241; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C3 outlet 213, the lower secondary air duct 272 and the lower front air port 111; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D1 outlet 221, the lower air duct 25 and the lower front air port 111; by means of the above four lower air outflow modes, different heating demands can be satisfied.

[0060] The upper-lower simultaneous air outflow mode includes the following three modes: (1) when both the upper rear air port 152 and the lower rear air port 141 are opened, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the fourth working position, and both the upper blade cavity C3 outlet 213 and the lower blade cavity D3 outlet 223 are closed, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152, and indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C1 outlet 211, the upper air duct 24 and the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D1 outlet 221, the lower air duct 25 and the lower front air port 111; (2) when the upper rear air port 152 is opened and the lower rear air port 141 is closed, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the fourth working position, and both the upper blade cavity C3 outlet 213 and the lower blade cavity D3 outlet 223 are closed, both the upper blade 214 and the lower blade 224 rotate, indoor air near the upper rear air port 152 enters the housing cavity 17 through the upper rear air port 152; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C1 outlet 211, the upper air duct 24 and the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D1 outlet 221, the lower air duct 25 and the lower front air port 111; (3) when the upper rear air port 152 is closed and the lower rear air port 141 is opened, the first upper air baffle structure 311 is in the second working position, the first lower air baffle structure 321 is in the fourth working position, and both the upper blade cavity C3 outlet 213 and the lower blade cavity D3 outlet 223 are closed, both the upper blade 214 and the lower blade 224 rotate, indoor air near the lower rear air port 141 enters the housing cavity 17 through the lower rear air port 141; a part of air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then is discharged through the upper blade cavity C1 outlet 211, the upper air duct 24 and the upper front air port 151; another part of air in the housing cavity 17 enters the lower blade cavity 22 through the lower blade cavity inlet, then is discharged through the lower blade cavity D1 outlet 221, the lower air duct 25 and the lower front air port 111.

[0061] A side wall of a lower portion of the upper air duct 24 is formed with an A1 air port 241, and a lower end of the upper air duct 24 is formed with an A2 air port 242; an upper side wall of the lower air duct 25 is formed with a B1 air port 251, and an upper end of the lower air duct 25 is formed with a B2 air port 252.Example 5

[0062] The present embodiment provides a control method for a cabinet air conditioner indoor unit. The cabinet air conditioner indoor unit includes a housing 1 and an air duct assembly. The housing 1 encloses a housing cavity 17, an upper front air port 151 and an upper rear air port 152 are formed in an upper portion of the housing 1, and a lower front air port 111 and a lower rear air port 141 are formed in a lower portion of the housing 1; the air duct assembly is disposed in the housing cavity 17, and the air duct assembly is formed with an upper air outflow main path which takes air from the lower front air port 111 and discharges air from the upper front air port 151, a lower air outflow main path which takes air from the upper front air port 151 and discharges air from the lower front air port 111, and an upper-lower simultaneous air outflow main path which discharges air from both the upper front air port 151 and the lower front air port 111 at the same time; a lower auxiliary air intake flow path for auxiliary air intake from the lower rear air port 141, an upper auxiliary air intake flow path for auxiliary air intake from the upper rear air port 152, and an upper-lower simultaneous auxiliary air intake flow path for simultaneous auxiliary air intake from both the upper rear air port 152 and the lower rear air port 141 are formed between the housing cavity 17 and the air duct assembly; preferably, the cabinet air conditioner indoor unit is the cabinet air conditioner indoor unit in Embodiment 1, Embodiment 2, Embodiment 3 or Embodiment 4; the control method includes: S1, determining a target running mode of the cabinet air conditioner indoor unit; S2, comparing a current temperature of indoor air with a first preset temperature; S3, determining a target air outflow main path and a target auxiliary air intake flow path according to the target running mode and a comparison result of the current temperature and the first preset temperature; S4, controlling the cabinet air conditioner indoor unit to operate in the target running mode, so that indoor air flows through the target air outflow main path and the target auxiliary air intake flow path; wherein the target running mode is a heating mode or a cooling mode, the target air outflow main path is the upper air outflow main path, the lower air outflow main path or the upper-lower simultaneous air outflow main path; the target auxiliary air intake flow path is the lower auxiliary air intake flow path, the upper auxiliary air intake flow path or the upper-lower simultaneous auxiliary air intake flow path. Further, S3 includes:

[0063] When the target running mode is a cooling mode and the current temperature is greater than the first preset temperature, or when the target running mode is a heating mode and the current temperature is less than the first preset temperature, the target air outflow main path is the upper-lower simultaneous air outflow main path, and the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path; air is discharged through the upper front air port 151 and the lower front air port 111 at the same time to realize enveloping cooling or enveloping heating.S3 further includes:

[0064] When the target running mode is a cooling mode and the current temperature is less than or equal to the first preset temperature, calculating an upper-lower temperature difference between an indoor upper-layer air temperature and an indoor lower-layer air temperature, and comparing the upper-lower temperature difference with the second preset temperature; When the upper-lower temperature difference is greater than the second preset temperature, the target air outflow main path is the upper air outflow main path, and the target auxiliary air intake flow path is the lower auxiliary air intake flow path; the air intake temperature of the lower rear air port is low, reducing the operating frequency of the compressor to realize energy saving of the air conditioner; When the upper-lower temperature difference is less than or equal to the second preset temperature, the target air outflow main path is the upper air outflow main path, and the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path; so that cold air does not blow people directly, improving the comfort of the air conditioner. In addition, S3 further includes:

[0065] When the target running mode is a heating mode and the current temperature is greater than or equal to the first preset temperature, calculating an upper-lower temperature difference between an indoor upper-layer air temperature and an indoor lower-layer air temperature, and comparing the upper-lower temperature difference with the third preset temperature;

[0066] When the upper-lower temperature difference is greater than the third preset temperature, the target air outflow main path is the lower air outflow main path, and the target auxiliary air intake flow path is the upper auxiliary air intake flow path; the air intake temperature of the upper rear air port is high, reducing the operating frequency of the compressor to realize energy saving of the air conditioner;

[0067] When the upper-lower temperature difference is less than or equal to the third preset temperature, the target air outflow main path is the lower air outflow main path, and the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path; so that hot air does not blow the head, improving the comfort of the air conditioner.

[0068] An upper temperature sensing bulb is disposed at an indoor upper layer for detecting an indoor upper-layer air temperature; a lower temperature sensing bulb is disposed at an indoor lower layer for detecting an indoor lower-layer air temperature.

[0069] Exemplary embodiments of the present application have been specifically illustrated and described above. It should be understood that the present application is not limited to the detailed structures, arrangements or implementation methods described herein; on the contrary, the present application is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A cabinet air conditioner indoor unit, comprising a housing and an air duct assembly, wherein the housing encloses a housing cavity, an upper front air port is formed in an upper portion of the housing, and a lower front air port is formed in a lower portion of the housing; wherein the air duct assembly is disposed in the housing cavity, and the air duct assembly is formed with an upper air duct, a power blade cavity and a lower air duct which are sequentially disposed from top to bottom; the upper air duct is in communication with an indoor space through the upper front air port, the lower air duct is in communication with the indoor space through the lower front air port, and the power blade cavity is in communication with the housing cavity through a blade cavity inlet; wherein the upper air duct is selectively in communication with the power blade cavity or the housing cavity; the lower air duct is selectively in communication with the power blade cavity or the housing cavity; wherein when the upper air duct is in communication with the power blade cavity, and the lower air duct is in communication with the housing cavity, the cabinet air conditioner indoor unit can form an upper air outflow main path, wherein air enters through the lower front air port and exits through the upper front air port; wherein when the upper air duct is in communication with the housing cavity, and the lower air duct is in communication with the power blade cavity, the cabinet air conditioner indoor unit can form a lower air outflow main path, wherein air enters through the upper front air port and exits through the lower front air port.

2. The cabinet air conditioner indoor unit according to claim 1, wherein an upper rear air port is further formed in the upper portion of the housing, the upper front air port is disposed opposite to the upper rear air port in a front-rear direction, and the upper rear air port is selectively opened or closed; a lower rear air port is further formed in the lower portion of the housing, the lower front air port is disposed opposite to the lower rear air port in the front-rear direction, and the lower rear air port is selectively opened or closed; an upper portion of the housing cavity is in communication with the indoor space through the upper rear air port, and a lower portion of the housing cavity is in communication with the indoor space through the lower rear air port; when the upper rear air port is closed and the lower rear air port is opened, the cabinet air conditioner indoor unit can form a lower auxiliary air intake flow path by auxiliary air intake through the lower rear air port; when the upper rear air port is opened and the lower rear air port is closed, the cabinet air conditioner indoor unit can form an upper auxiliary air intake flow path by auxiliary air intake through the upper rear air port; when both the upper rear air port and the lower rear air port are opened, the cabinet air conditioner indoor unit can form an upper-lower simultaneous auxiliary air intake flow path by auxiliary air intake through the upper rear air port and the lower rear air port.

3. The cabinet air conditioner indoor unit according to claim 2, wherein, when at least one of the upper rear air port and the lower rear air port is opened, and both the upper air duct and the lower air duct are in communication with the power blade cavity, the cabinet air conditioner indoor unit can form an upper-lower simultaneous air outflow main path in which air exits through both the upper front air port and the lower front air port.

4. The cabinet air conditioner indoor unit according to claim 3, wherein an A1 air port and an A2 air port are formed at a lower portion of the upper air duct; a first upper air baffle structure is movably disposed between the A1 air port and the A2 air port, the first upper air baffle structure having a first working position and a second working position, when the first upper air baffle structure is located at the first working position, the first upper air baffle structure opens the A1 air port and closes the A2 air port at the same time, so that the upper air duct is in communication with the housing cavity, and the upper air duct is not in communication with the power blade cavity; when the first upper air baffle structure is located at the second working position, the first upper air baffle structure closes the A1 air port and opens the A2 air port at the same time, so that the upper air duct is not in communication with the housing cavity, and the upper air duct is in communication with the power blade cavity; a B1 air port and a B2 air port are formed in an upper portion of the lower air duct; a first lower air baffle structure is movably disposed between the B1 air port and the B2 air port, the first lower air baffle structure has a third working position and a fourth working position, when the first lower air baffle structure is located at the third working position, the first lower air baffle structure opens the B1 air port and closes the B2 air port at the same time, so that the lower air duct is in communication with the housing cavity, and the lower air duct is not in communication with the power blade cavity; when the first lower air baffle structure is located at the fourth working position, the first lower air baffle structure closes the B1 air port and opens the B2 air port at the same time, so that the lower air duct is not in communication with the housing cavity, and the lower air duct is in communication with the power blade cavity.

5. The cabinet air conditioner indoor unit according to claim 4, wherein two power blade cavities are provided, and the two power blade cavities comprise an upper blade cavity and a lower blade cavity that are sequentially provided from top to bottom; an upper blade is rotatably disposed in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet and an upper blade cavity outlet; the upper blade cavity inlet is in communication with the upper blade cavity and the housing cavity, and the upper blade cavity outlet is in communication with the A2 air port; a lower blade is rotatably disposed in the lower blade cavity, and the lower blade cavity is formed with a lower blade cavity inlet and a lower blade cavity outlet; the lower blade cavity inlet is in communication with the lower blade cavity and the housing cavity, and the lower blade cavity outlet is in communication with the B2 air port; when the first upper air baffle structure is located at the second working position and the first lower air baffle structure is located at the third working position, the upper blade rotates and the lower blade does not rotate, and indoor air can flow through the upper air outflow main path; when the first upper air baffle structure is located at the first working position and the first lower air baffle structure is located at the fourth working position, the upper blade does not rotate and the lower air blade rotates, and indoor air can flow through the lower air outflow main pipeline.

6. The cabinet air conditioner indoor unit according to claim 4, wherein the power blade cavity is provided with one intermediate blade cavity; an intermediate blade is rotatably disposed in the intermediate blade cavity, and the intermediate blade cavity is formed with an intermediate blade cavity inlet, an intermediate blade cavity upper outlet and an intermediate blade cavity lower outlet; the intermediate blade cavity inlet is in communication with the intermediate blade cavity and the housing cavity, the intermediate blade cavity upper outlet is in communication with the A2 air port, and the intermediate blade cavity lower outlet is in communication with the B2 air port; when the first upper air baffle structure is located at the second working position and the first lower air baffle structure is located at the third working position, the intermediate blade rotates, and indoor air can flow through the upper air outflow main path; when the first upper air baffle structure is located at the first working position and the first lower air baffle structure is located at the fourth working position, the intermediate blade rotates, and indoor air can flow through the lower air outflow main path.

7. The cabinet air conditioner indoor unit according to claim 6, wherein a second upper air baffle structure and a second lower air baffle structure are further rotatably disposed in the intermediate blade cavity; the second upper air baffle structure is close to the intermediate blade cavity upper outlet, and the second lower air baffle structure is close to the intermediate blade cavity lower outlet; the second upper air baffle structure and the second lower air baffle structure are both adapted to a profile line of the intermediate blade cavity; when the first upper air baffle structure is located at the second working position and the first lower air baffle structure is located at the third working position, the second lower air baffle structure cooperates with the first lower air baffle structure to guide air in the intermediate blade cavity to the upper air duct; when the first upper air baffle structure is located at the first working position and the first lower air baffle structure is located at the fourth working position, the second upper air baffle structure cooperates with the first upper air baffle structure to guide air in the intermediate blade cavity to the lower air duct.

8. The cabinet air conditioner indoor unit according to claim 4, wherein two power blade cavities are provided, and the two power blade cavities comprise an upper blade cavity and a lower blade cavity that are sequentially provided from top to bottom; an upper blade is rotatably disposed in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet, an upper blade cavity C2 outlet and an upper blade cavity C3 outlet; the upper blade cavity inlet is in communication with the upper blade cavity and the housing cavity, and the upper blade cavity C1 outlet is in communication with the A2 air port; the lower blade cavity is rotatably provided with a lower air blade therein, and the lower blade cavity is formed with a lower blade cavity inlet, a lower blade cavity D1 outlet, a lower blade cavity D2 outlet and a lower blade cavity D3 outlet; the lower blade cavity inlet is in communication with the lower blade cavity and the housing cavity, and the lower blade cavity D1 outlet is in communication with the B2 air port; the air duct assembly is further provided with an upper auxiliary air duct, a middle auxiliary air duct and a lower auxiliary air duct which are sequentially disposed from top to bottom; the upper auxiliary air duct is communicated with the upper front air port and the upper blade cavity C2 outlet, the lower auxiliary air duct is communicated with the lower front air port and the lower blade cavity D2 outlet, and the middle auxiliary air duct is communicated with the upper blade cavity C3 outlet and the lower blade cavity D3 outlet.

9. The cabinet air conditioner indoor unit according to claim 8, wherein a third upper air baffle structure is movably disposed at the upper blade cavity C2 outlet, and the third upper air baffle structure can open or close the upper blade cavity C2 outlet; a third lower air baffle structure is movably disposed at the lower blade cavity D2 outlet, and the third lower air baffle structure can open or close the lower blade cavity D2 outlet; when the third upper air baffle structure opens the upper blade cavity C2 outlet and the third lower air baffle structure closes the lower blade cavity D2 outlet, the lower air duct, the lower blade cavity, the middle auxiliary air duct, the upper blade cavity, the upper air duct and the upper auxiliary air duct are in communication with each other to form the upper air outflow main path; when the third upper air baffle structure closes the upper blade cavity C2 outlet and the third lower air baffle structure opens the lower blade cavity D2 outlet, the upper air duct, the upper blade cavity, the middle auxiliary air duct, the lower blade cavity, the lower air duct and the lower auxiliary air duct are in communication with each other to form the lower air outflow main path; when the third upper air baffle structure closes the upper blade cavity C2 outlet and the third lower air baffle structure closes the lower blade cavity D2 outlet, the upper blade cavity and the upper air duct, the lower blade cavity and the lower air duct form the upper-lower simultaneous air outflow main path.

10. The cabinet air conditioner indoor unit according to claim 4, wherein two power blade cavities are provided, and the two power blade cavities comprise an upper blade cavity and a lower blade cavity that are sequentially provided from top to bottom; an upper blade is rotatably disposed in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet and an upper blade cavity C3 outlet; the upper blade cavity inlet is in communication with the upper blade cavity and the housing cavity, the upper blade cavity C1 outlet is in communication with the A2 air port, and a lower secondary air duct is formed between the upper blade cavity C3 outlet and the lower front air port; a fourth upper air baffle structure is movably disposed at the upper blade cavity C3 outlet, and can open or close the upper blade cavity C3 outlet; a lower blade is rotatably disposed in the lower blade cavity, and the lower blade cavity is formed with a lower blade cavity inlet, a lower blade cavity D1 outlet and a lower blade cavity D3 outlet; the lower blade cavity inlet is in communication with the lower blade cavity and the housing cavity, the lower blade cavity D1 outlet is in communication with the B2 air port, and an upper secondary air duct is formed between the lower blade cavity D3 outlet and the upper front air port; a fourth lower air baffle structure is movably disposed at the lower blade cavity D3 outlet, and can open or close the lower blade cavity D3 outlet.

11. The cabinet air conditioner indoor unit according to claim 10, wherein when the first upper air baffle structure is located in the second working position, the first lower air baffle structure is located in the third working position, the upper blade cavity C3 outlet is closed, and the lower blade cavity D3 outlet is opened, the lower air duct, the upper blade cavity and the upper air duct are sequentially communicated to form the upper air outflow main path, and the lower air duct, the lower blade cavity and the upper secondary air duct are sequentially communicated to form an upper air outflow secondary path; when the first upper air baffle structure is located at the first working position, the first lower air baffle structure is located at the fourth working position, the upper blade cavity C3 outlet is open, and the lower blade cavity D3 outlet is closed, the upper air duct, the lower blade cavity, and the lower air duct are in communication sequentially to form the lower air outflow main path, and the upper air duct, the upper blade cavity, and the lower secondary air duct are in communication sequentially to form a lower air outflow secondary path.

12. The cabinet air conditioner indoor unit according to claim 1, wherein the housing comprises a left housing wall, the blade cavity inlet comprises a left blade cavity inlet, and the left blade cavity inlet corresponds to the left housing wall; the air conditioner indoor unit further comprises an indoor heat exchanger, the indoor heat exchanger comprises a left heat exchanger, and the left heat exchanger is disposed between the left housing wall and the left blade cavity inlet; and / or , the housing further comprises a right housing wall, the blade cavity inlet comprises a right blade cavity inlet, and the right blade cavity inlet corresponds to the right housing wall; the air conditioner indoor unit further comprises an indoor heat exchanger, the indoor heat exchanger comprises a right heat exchanger, and the right heat exchanger is disposed between the right housing wall and the right blade cavity inlet.

13. The cabinet air conditioner indoor unit according to claim 12, wherein the left heat exchanger comprises an E1 heat exchange section and a F1 heat exchange section; the E1 heat exchange section extends to the upper air duct, and the F1 heat exchange section extends to the lower air duct; the E1 heat exchange section is provided above the F1 heat exchange section, and the following conditions are satisfied: 90° ≤ α ≤ 180°; and / or, the right heat exchanger comprises an E2 heat exchange section and a F2 heat exchange section; the E2 heat exchange section extends towards the upper air duct, and the F2 heat exchange section extends towards the lower air duct; the E2 heat exchange section is provided above the F2 heat exchange section, and satisfies the following conditions: 90° ≤ β ≤ 180°; wherein α is an included angle between a heat exchange surface of the E1 heat exchange section and a heat exchange surface of the F1 heat exchange section, and β is an included angle between a heat exchange surface of the E2 heat exchange section and a heat exchange surface of the F2 heat exchange section.

14. A control method for a cabinet air conditioner indoor unit, wherein the cabinet air conditioner indoor unit comprises a housing and an air duct assembly, the housing encloses a housing cavity, an upper front air port and an upper rear air port are formed in an upper portion of the housing, and a lower front air port and a lower rear air port are formed in a lower portion of the housing; the air duct assembly is disposed in the housing cavity, and the air duct assembly is provided with an upper air outflow main path which is supplied with air from the lower front air port and discharged from the upper front air port, a lower air outflow main path which is supplied with air from the upper front air port and discharged from the lower front air port, and an upper-lower simultaneous air outflow main path which are supplied with air discharged from the upper front air port and the lower front air port at the same time; a lower auxiliary air intake flow path for assisting air intake from the lower rear air port, an upper auxiliary air intake flow path for assisting air intake from the upper rear air port and an upper-lower simultaneous auxiliary air intake flow path for assisting air intake from both the upper rear air port and the lower rear air port at the same time; the control method comprises: determining a target running mode of the cabinet air conditioner indoor unit; comparing a current temperature of an indoor air with a first preset temperature; determining a target air outflow main path and a target auxiliary air intake flow path according to the target running mode and a comparison result of the current temperature and the first preset temperature; wherein the target running mode is a heating mode or a cooling mode, and the target air outflow main path is the upper air outflow main path or the lower air outflow main path or the upper-lower simultaneous air outflow main path; and the target auxiliary air intake flow path is the lower auxiliary air intake flow path or the upper auxiliary air intake flow path or the upper-lower simultaneous auxiliary air intake flow path.

15. The control method for the cabinet air conditioner indoor unit according to claim 14, wherein the determining the target air outflow main path and the target auxiliary air intake flow path according to the target running mode and the comparison result of the current temperature and the first preset temperature comprises: when the target running mode is the cooling mode and the current temperature is greater than a first preset temperature, or when the target running mode is the heating mode and the current temperature is less than the first preset temperature, the target air outflow main path is the upper-lower simultaneous air outflow main path, the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path.

16. The control method for the cabinet air conditioner indoor unit according to claim 15, wherein the determining the target air outflow main path and the target auxiliary air intake flow path according to the target running mode and the comparison result of the current temperature and the first preset temperature further comprises: when the target running mode is the cooling mode and the current temperature is less than or equal to the first preset temperature, calculating an upper-lower temperature difference between an indoor upper-layer air temperature and an indoor lower-layer air temperature, and comparing the upper-lower temperature difference with a second preset temperature; when the upper-lower temperature difference is greater than the second preset temperature, the target air outflow main path is the upper air outflow main path, and the target auxiliary air intake flow path is the lower auxiliary air intake flow path; when the upper-lower temperature difference is less than or equal to the second preset temperature, the target air outflow main path is the upper air outflow main path, and the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path.

17. The control method for the cabinet air conditioner indoor unit according to claim 15, characterized in that the determining the target air outflow main path and the target auxiliary air intake flow path according to the target running mode and the comparison result of the current temperature and the first preset temperature further comprises: when the target running mode is the heating mode and the current temperature is greater than or equal to the first preset temperature, calculating an upper-lower temperature difference between an indoor upper-layer air temperature and an indoor lower-layer air temperature, and comparing the upper-lower temperature difference with a third preset temperature; when the upper-lower temperature difference is greater than the third preset temperature, the target air outflow main path is the lower air outflow main path, and the target auxiliary air intake flow path is the upper auxiliary air intake flow path; when the upper-lower temperature difference is less than or equal to the third preset temperature, the target air outflow main path is the lower air outflow main path, and the target auxiliary air intake flow path is the upper-lower simultaneous auxiliary air intake flow path.

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