Cabinet type air conditioner indoor unit and control method

Abstract

The invention provides a cabinet type air conditioner indoor unit and a control method. An upper front air opening and an upper rear air opening are formed in the upper portion of a shell, and a lower front air opening and a lower rear air opening are formed in the lower portion of the shell; the air duct assembly is provided with an upper air duct, a power fan blade cavity and a lower air duct which are sequentially arranged. The upper air duct communicates with the upper front air opening, the lower air duct communicates with the lower front air opening, and the power fan blade cavity communicates with the shell cavity. The upper air duct is communicated with the power fan blade cavity, the lower air duct is communicated with the shell cavity, and an upper air outlet main flow path through which air enters from the lower front air opening and exits from the upper front air opening is formed in the cabinet type air conditioner indoor unit; the upper air duct is communicated with the shell cavity, the lower air duct is communicated with the power fan blade cavity, and a lower air outlet main flow path through which air enters from the upper front air opening and exits from the lower front air opening is formed in the cabinet type air conditioner indoor unit; and the upper air duct and the lower air duct are both communicated with the power fan blade cavity, and the cabinet type air conditioner indoor unit forms an upper and lower simultaneous air outlet main flow path for simultaneously discharging air from the upper front air port and the lower front air port.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and particularly relates to a cabinet air conditioner indoor unit and a control method therefor. Background Art

[0002] In traditional cabinet air conditioner indoor units, the positions of the air supply outlet and the air return outlet are relatively fixed. However, the indoor air temperature stratifies along the height direction, with hot air accumulating on the upper side of the room and cold air accumulating on the lower side, resulting in these cabinet air conditioners being unable to balance the cooling and heating requirements, uneven indoor air temperature distribution, and poor comfort. Taking a cabinet air conditioner indoor unit with an upper air supply and a lower air return as an example, the air supply outlet is on the upper side of the indoor unit housing. When cooling and supplying cold air, the cold air first quickly reaches above the human activity area and then naturally sinks, achieving rapid cooling and a small blowing feeling, while balancing the temperature drop and comfort effect. At the same time, since the air return outlet is at the lower part of the indoor unit housing, the return air temperature is low, and the energy-saving effect is better. However, when heating and supplying hot air, due to the principle of hot air rising, the hot air cannot come down in the upper part of the room, resulting in a phenomenon of upper heat and lower cold, and the return air temperature is low. More energy is required to reach the same air supply temperature, and the energy-saving effect is poor.

[0003] To address the above problems, the prior art realizes reversible up-and-down air supply by arranging an axial flow fan or a mixed flow fan in the air duct. However, when using an axial flow fan, the manufacturing cost of the motor is high, and the axial flow fan has problems such as short air supply distance and small air pressure. When using a mixed flow fan, the fan speed is high, the noise is large, and the efficiency is low. Summary of the Invention

[0004] In view of this, the present invention provides a cabinet air conditioner indoor unit and a control method therefor to solve the problems in the prior art, such as small air supply range, slow temperature change of indoor air, uneven distribution, and long time required for the room where the indoor unit is located to reach the set temperature, when realizing reversible up-and-down air supply by arranging an axial flow fan or a mixed flow fan in the air duct.

[0005] The present invention provides a cabinet air conditioner indoor unit, including a housing and an air duct assembly. The housing encloses a housing cavity, and an upper front air outlet is formed at the upper part of the housing, and a lower front air outlet is formed at the lower part of the housing. The air duct assembly is arranged in the housing cavity, and the air duct assembly forms an upper air duct, a dynamic air blade cavity, and a lower air duct arranged in sequence from top to bottom. The upper air duct is communicated with the indoor through the upper front air outlet, the lower air duct is communicated with the indoor through the lower front air outlet, and the dynamic air blade cavity is communicated with the housing cavity through a blade cavity inlet. The upper air duct can be selectively communicated with the dynamic air blade cavity or the housing cavity. The lower air duct can be selectively communicated with the dynamic air blade cavity or the housing cavity.

[0006] When the upper air duct is communicated with the dynamic air blade cavity and the lower air duct is communicated with the housing cavity, the cabinet air conditioner indoor unit can form an upper air supply main flow path with air entering through the lower front air outlet and exiting through the upper front air outlet.

[0007] When the upper air duct is communicated with the housing cavity and the lower air duct is communicated with the power fan cavity, the floor-standing air conditioner indoor unit can form a lower-outlet main air flow path in which air enters from the upper front air outlet and exits from the lower front air outlet.

[0008] Further optionally, an upper rear air outlet is further formed in the upper part of the housing. The upper front air outlet and the upper rear air outlet are arranged opposite to each other front and rear, and the upper rear air outlet can be selectively opened or closed; a lower rear air outlet is further formed in the lower part of the housing. The lower front air outlet and the lower rear air outlet are arranged opposite to each other front and rear, and the lower rear air outlet can be selectively opened or closed; the upper part of the housing cavity is communicated with the room through the upper rear air outlet, and the lower part of the housing cavity is communicated with the room through the lower rear air outlet;

[0009] When the upper rear air outlet is closed and the lower rear air outlet is opened, the floor-standing air conditioner indoor unit can form a lower auxiliary air inlet flow path in which air is assisted to enter from the lower rear air outlet.

[0010] When the upper rear air outlet is opened and the lower rear air outlet is closed, the floor-standing air conditioner indoor unit can form an upper auxiliary air inlet flow path in which air is assisted to enter from the upper rear air outlet.

[0011] When both the upper rear air outlet and the lower rear air outlet are opened, the floor-standing air conditioner indoor unit can form an upper and lower simultaneous auxiliary air inlet flow path in which air is assisted to enter from the upper rear air outlet and the lower rear air outlet simultaneously.

[0012] Further optionally, when at least one of the upper rear air outlet and the lower rear air outlet is opened and both the upper air duct and the lower air duct are communicated with the power fan cavity, the floor-standing air conditioner indoor unit can form an upper and lower simultaneous air outlet main air flow path in which air exits from the upper front air outlet and the lower front air outlet simultaneously.

[0013] Further optionally, an A1 ventilation opening and an A2 ventilation opening are formed in the lower part of the upper air duct; a first upper wind blocking structure is movably arranged between the A1 ventilation opening and the A2 ventilation opening. The first upper wind blocking structure has a first working position and a second working position. When the first upper wind blocking structure is in the first working position, the first upper wind blocking structure opens the A1 ventilation opening and closes the A2 ventilation opening, so that the upper air duct is communicated with the housing cavity and the upper air duct is not communicated with the power fan cavity; when the first upper wind blocking structure is in the second working position, the first upper wind blocking structure closes the A1 ventilation opening and opens the A2 ventilation opening, so that the upper air duct is not communicated with the housing cavity and the upper air duct is communicated with the power fan cavity;

[0014] An upper portion of the lower air duct is formed with a B1 ventilation opening and a B2 ventilation opening; a first lower wind-blocking structure is movably arranged between the B1 ventilation opening and the B2 ventilation opening. The first lower wind-blocking structure has a third working position and a fourth working position. When the first lower wind-blocking structure is in the third working position, the first lower wind-blocking structure opens the B1 ventilation opening and closes the B2 ventilation opening, so that the lower air duct communicates with the housing cavity and the lower air duct does not communicate with the power fan blade cavity; when the first lower wind-blocking structure is in the fourth working position, the first lower wind-blocking structure closes the B1 ventilation opening and opens the B2 ventilation opening, so that the lower air duct does not communicate with the housing cavity and the lower air duct communicates with the power fan blade cavity.

[0015] Further optionally, there are two power fan blade cavities. The two power fan blade cavities include an upper fan blade cavity and a lower fan blade cavity arranged in sequence from top to bottom; an upper fan blade is rotatably arranged in the upper fan blade cavity, and the upper fan blade cavity is formed with an upper fan blade cavity inlet and an upper fan blade cavity outlet; the upper fan blade cavity inlet communicates the upper fan blade cavity with the housing cavity, and the upper fan blade cavity outlet communicates with the A2 ventilation opening;

[0016] A lower fan blade is rotatably arranged in the lower fan blade cavity, and the lower fan blade cavity is formed with a lower fan blade cavity inlet and a lower fan blade cavity outlet; the lower fan blade cavity inlet communicates the lower fan blade cavity with the housing cavity, and the lower fan blade cavity outlet communicates with the B2 ventilation opening;

[0017] When the first upper wind-blocking structure is in the second working position and the first lower wind-blocking structure is in the third working position, the upper fan blade rotates and the lower fan blade does not rotate, and indoor air can flow through the upper air outlet main flow path;

[0018] When the first upper wind-blocking structure is in the first working position and the first lower wind-blocking structure is in the fourth working position, the upper fan blade does not rotate and the lower fan blade rotates, and indoor air can flow through the lower air outlet main flow path.

[0019] Further optionally, there is one power fan blade cavity and the power fan blade cavity is an intermediate fan blade cavity; an intermediate fan blade is rotatably arranged in the intermediate fan blade cavity, and the intermediate fan blade cavity is formed with an intermediate fan blade cavity inlet, an intermediate fan blade cavity upper outlet and an intermediate fan blade cavity lower outlet; the intermediate fan blade cavity inlet communicates the intermediate fan blade cavity with the housing cavity, the intermediate fan blade cavity upper outlet communicates with the A2 ventilation opening, and the intermediate fan blade cavity lower outlet communicates with the B2 ventilation opening;

[0020] When the first upper wind-blocking structure is in the second working position and the first lower wind-blocking structure is in the third working position, the intermediate fan blade rotates, and indoor air can flow through the upper air outlet main flow path;

[0021] When the first upper wind shield structure is in the first working position and the first lower wind shield structure is in the fourth working position, the intermediate wind blade rotates, and indoor air can flow through the lower air outlet main flow path.

[0022] Further optionally, a second upper wind shield structure and a second lower wind shield structure are rotatably arranged in the intermediate wind blade cavity; the second upper wind shield structure is close to the upper outlet of the intermediate wind blade cavity, and the second lower wind shield structure is close to the lower outlet of the intermediate wind blade cavity; both the second upper wind shield structure and the second lower wind shield structure are adapted to the profile of the intermediate wind blade cavity;

[0023] When the first upper wind shield structure is in the second working position and the first lower wind shield structure is in the third working position, the second lower wind shield structure and the first lower wind shield structure cooperate to direct the air in the intermediate wind blade cavity to the upper air duct;

[0024] When the first upper wind shield structure is in the first working position and the first lower wind shield structure is in the fourth working position, the second upper wind shield structure and the first upper wind shield structure cooperate to direct the air in the intermediate wind blade cavity to the lower air duct.

[0025] Further optionally, there are two power wind blade cavities, and the two power wind blade cavities include an upper wind blade cavity and a lower wind blade cavity arranged in sequence from top to bottom; an upper wind blade is rotatably arranged in the upper wind blade cavity, and the upper wind blade cavity is formed with an upper wind blade cavity inlet, an upper wind blade cavity C1 outlet, an upper wind blade cavity C2 outlet, and an upper wind blade cavity C3 outlet; the upper wind blade cavity inlet communicates with the upper wind blade cavity and the housing cavity, and the upper wind blade cavity C1 outlet communicates with the A2 ventilation opening;

[0026] A lower wind blade is rotatably arranged in the lower wind blade cavity, and the lower wind blade cavity is formed with a lower wind blade cavity inlet, a lower wind blade cavity D1 outlet, a lower wind blade cavity D2 outlet, and a lower wind blade cavity D3 outlet; the lower wind blade cavity inlet communicates with the lower wind blade cavity and the housing cavity, and the lower wind blade cavity D1 outlet communicates with the B2 ventilation opening;

[0027] The air duct assembly further forms an upper auxiliary air duct, a middle auxiliary air duct, and a lower auxiliary air duct arranged in sequence from top to bottom; the upper auxiliary air duct communicates with the upper front air outlet and the upper wind blade cavity C2 outlet, the lower auxiliary air duct communicates with the lower front air outlet and the lower wind blade cavity D2 outlet, and the middle auxiliary air duct communicates with the upper wind blade cavity C3 outlet and the lower wind blade cavity D3 outlet.

[0028] Further optionally, a third upper wind shield structure is movably arranged at the upper wind blade cavity C2 outlet, and the third upper wind shield structure can open or close the upper wind blade cavity C2 outlet; a third lower wind shield structure is movably arranged at the lower wind blade cavity D2 outlet, and the third lower wind shield structure can open or close the lower wind blade cavity D2 outlet;

[0029] When the third upper wind-blocking structure opens the outlet of the upper wind blade cavity C2 and the third lower wind-blocking structure closes the outlet of the lower wind blade cavity D2, the lower air duct, the lower wind blade cavity, the middle auxiliary air duct, the upper wind blade cavity, the upper air duct and the upper auxiliary air duct are communicated to form the upper air outlet main flow path;

[0030] When the third upper wind-blocking structure closes the outlet of the upper wind blade cavity C2 and the third lower wind-blocking structure opens the outlet of the lower wind blade cavity D2, the upper air duct, the upper wind blade cavity, the middle auxiliary air duct, the lower wind blade cavity, the lower air duct and the lower auxiliary air duct are communicated to form the lower air outlet main flow path;

[0031] When the third upper wind-blocking structure closes the outlet of the upper wind blade cavity C2 and the third lower wind-blocking structure closes the outlet of the lower wind blade cavity D2, the upper wind blade cavity and the upper air duct and the lower wind blade cavity and the lower air duct form the upper and lower simultaneous air outlet main flow path.

[0032] Further optionally, there are two power wind blade cavities, and the two power wind blade cavities include an upper wind blade cavity and a lower wind blade cavity which are arranged in sequence from top to bottom; an upper wind blade is rotatably arranged in the upper wind blade cavity, and the upper wind blade cavity is formed with an upper wind blade cavity inlet, an upper wind blade cavity C1 outlet and an upper wind blade cavity C3 outlet; the upper wind blade cavity inlet communicates the upper wind blade cavity with the housing cavity, the upper wind blade cavity C1 outlet communicates with the A2 ventilation opening, and a lower auxiliary air duct is formed between the upper wind blade cavity C3 outlet and the lower front air outlet; a fourth upper wind-blocking structure is movably arranged at the upper wind blade cavity C3 outlet, and the fourth upper wind-blocking structure can open or close the upper wind blade cavity C3 outlet;

[0033] A lower wind blade is rotatably arranged in the lower wind blade cavity, and the lower wind blade cavity is formed with a lower wind blade cavity inlet, a lower wind blade cavity D1 outlet and a lower wind blade cavity D3 outlet; the lower wind blade cavity inlet communicates the lower wind blade cavity with the housing cavity, the lower wind blade cavity D1 outlet communicates with the B2 ventilation opening, and an upper auxiliary air duct is formed between the lower wind blade cavity D3 outlet and the upper front air outlet; a fourth lower wind-blocking structure is movably arranged at the lower wind blade cavity D3 outlet, and the fourth lower wind-blocking structure can open or close the lower wind blade cavity D3 outlet.

[0034] Further optionally, when the first upper wind-blocking structure is in the second working position, the first lower wind-blocking structure is in the third working position, the upper wind blade cavity C3 outlet is closed and the lower wind blade cavity D3 outlet is opened, the lower air duct, the upper wind blade cavity and the upper air duct are communicated in sequence to form the upper air outlet main flow path, and the lower air duct, the lower wind blade cavity and the upper auxiliary air duct are communicated in sequence to form an upper air outlet secondary flow path;

[0035] When the first upper wind deflector structure is in the first working position, the first lower wind deflector structure is in the fourth working position, the outlet of the upper wind blade cavity C3 is open and the outlet of the lower wind blade cavity D3 is closed, the upper air duct, the lower wind blade cavity and the lower air duct are sequentially communicated to form the main lower air outlet flow path, and the upper air duct, the upper wind blade cavity and the lower auxiliary air duct are sequentially communicated to form the auxiliary lower air outlet flow path.

[0036] Further optionally, the housing includes a left side wall of the housing, the inlet of the wind blade cavity includes a left inlet of the wind blade cavity, and the left inlet of the wind blade cavity corresponds to the left side wall of the housing; the indoor air conditioner further includes an indoor heat exchanger, and the indoor heat exchanger includes a left heat exchanger, and the left heat exchanger is disposed between the left side wall of the housing and the left inlet of the wind blade cavity; and / or,

[0037] The housing further includes a right side wall of the housing, the inlet of the wind blade cavity includes a right inlet of the wind blade cavity, and the right inlet of the wind blade cavity corresponds to the right side wall of the housing; the indoor air conditioner further includes an indoor heat exchanger, and the indoor heat exchanger includes a right heat exchanger, and the right heat exchanger is disposed between the right side wall of the housing and the right inlet of the wind blade cavity.

[0038] Further optionally, the left heat exchanger includes an E1 heat exchange section and an F1 heat exchange section; the E1 heat exchange section extends towards the upper air duct, and the F1 heat exchange section extends towards the lower air duct; the E1 heat exchange section is disposed above the F1 heat exchange section, and satisfies: 90°≤ɑ≤180°; and / or,

[0039] 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 disposed above the F2 heat exchange section, and satisfies: 90°≤β≤180°;

[0040] Wherein, ɑ is the included angle between the heat exchange surface of the E1 heat exchange section and the heat exchange surface of the F1 heat exchange section, and β is the included angle between the heat exchange surface of the E2 heat exchange section and the heat exchange surface of the F2 heat exchange section.

[0041] The present invention also provides a control method for a cabinet-type air conditioner indoor unit. The cabinet-type air conditioner indoor unit includes a housing and an air duct assembly. The housing encloses a housing cavity, and an upper front air outlet and an upper rear air outlet are formed at the upper part of the housing. A lower front air outlet and a lower rear air outlet are formed at the lower part of the housing. The air duct assembly is disposed in the housing cavity, and the air duct assembly forms an upper air outlet main flow path with air entering from the lower front air outlet and exiting from the upper front air outlet, a lower air outlet main flow path with air entering from the upper front air outlet and exiting from the lower front air outlet, and an upper and lower simultaneous air outlet main flow path with air exiting from the upper front air outlet and the lower front air outlet simultaneously. A lower auxiliary air inlet flow path with air assisted in entering from the lower rear air outlet, an upper auxiliary air inlet flow path with air assisted in entering from the upper rear air outlet, and an upper and lower simultaneous auxiliary air inlet flow path with air assisted in entering from the upper rear air outlet and the lower rear air outlet simultaneously are formed between the housing cavity and the air duct assembly.

[0042] The control method includes:

[0043] Determine the target operation mode of the cabinet-type air conditioner indoor unit;

[0044] Compare the current temperature of the indoor air with a first preset temperature;

[0045] Determine a target main flow path and a target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature;

[0046] Wherein, the target operation mode is a heating mode or a cooling mode, and the target main flow path is the upper air outlet main flow path or the lower air outlet main flow path or the upper and lower simultaneous air outlet main flow path; the target auxiliary air inlet flow path is the lower auxiliary air inlet flow path or the upper auxiliary air inlet flow path or the upper and lower simultaneous auxiliary air inlet flow path.

[0047] Further optionally, the determining the target main flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature includes:

[0048] When the target operation mode is the cooling mode and the current temperature is greater than the first preset temperature, or when the target operation mode is the heating mode and the current temperature is less than the first preset temperature, the target main flow path is the upper and lower simultaneous air outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path.

[0049] Further optionally, the determining the target main flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature further includes:

[0050] When the target operation mode is the cooling mode and the current temperature is less than or equal to the first preset temperature, calculate the upper and lower temperature difference between the indoor upper layer air temperature and the lower layer air temperature and compare the upper and lower temperature difference with a second preset temperature;

[0051] When the upper-lower temperature difference is greater than the second preset temperature, the target main air flow path is the upper air outlet main air flow path, and the target auxiliary air inlet flow path is the lower auxiliary air inlet flow path;

[0052] When the upper-lower temperature difference is less than or equal to the second preset temperature, the target main air flow path is the upper air outlet main air flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow paths.

[0053] Further optionally, the determining the target main air flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result between the current temperature and the first preset temperature further includes:

[0054] When the target operation mode is the heating mode and the current temperature is greater than or equal to the first preset temperature, calculate the upper-lower temperature difference between the indoor upper-layer air temperature and the lower-layer air temperature and compare the upper-lower temperature difference with the third preset temperature;

[0055] When the upper-lower temperature difference is greater than the third preset temperature, the target main air flow path is the lower air outlet main air flow path, and the target auxiliary air inlet flow path is the upper auxiliary air inlet flow path;

[0056] When the upper-lower temperature difference is less than or equal to the third preset temperature, the target main air flow path is the lower air outlet main air flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow paths.

[0057] Compared with the prior art, the beneficial effects of the present invention mainly lie in:

[0058] An upper front air outlet is formed in the upper part of the housing and a lower front air outlet is formed in the lower part of the housing. The positions of the upper front air outlet and the lower front air outlet are optimized, and the distance between the upper front air outlet and the lower front air outlet is increased; during refrigeration, the upper air duct is communicated with the power air blade cavity and the lower air duct is communicated with the housing cavity, and an upper air outlet main air flow path is formed in the cabinet-type air conditioner indoor unit, and indoor air can enter the upper air outlet main air flow path from the lower front air outlet and be discharged from the upper front air outlet; during heating, the upper air duct is communicated with the housing cavity and the lower air duct is communicated with the power air blade cavity, and a lower air outlet main air flow path is formed in the cabinet-type air conditioner indoor unit, and indoor air can enter the lower air outlet main air flow path from the upper front air outlet and be discharged from the lower front air outlet; making full use of the principle that cold air sinks during refrigeration and hot air rises during heating, a large swirling eddy current is formed 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 made uniform and the flow velocity is stable, the time required for the room where the indoor unit is located to reach the set temperature is shortened, and the comfort of the air is improved. Description of the Drawings

[0059] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0060] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0061] Figure 1 Schematic diagram of the external structure of the cabinet-type air conditioner indoor unit according to the embodiment provided by the present invention;

[0062] Figure 2 Schematic diagram of the internal structure of the cabinet-type air conditioner indoor unit according to Embodiment 1 provided by the present invention;

[0063] Figure 3a 、 Figure 3b 、 Figure 3c and Figure 3d Schematic diagram of the flow path of Embodiment 1 of the cabinet-type air conditioner indoor unit in the upper air outlet mode provided by the present invention;

[0064] Figure 4a 、 Figure 4b 、 Figure 4c and Figure 4d Schematic diagram of the flow path of Embodiment 1 of the cabinet-type air conditioner indoor unit in the lower air outlet mode provided by the present invention;

[0065] Figure 5a 、 Figure 5b and Figure 5c Schematic diagram of the flow path of Embodiment 1 of the cabinet-type air conditioner indoor unit in the upper and lower simultaneous air outlet mode provided by the present invention;

[0066] Figure 6 Schematic diagram of the internal structure of the cabinet-type air conditioner indoor unit according to Embodiment 2 provided by the present invention;

[0067] Figure 7a 、 Figure 7b 、 Figure 7c and Figure 7d Schematic diagram of the flow path of Embodiment 2 of the cabinet-type air conditioner indoor unit in the upper air outlet mode provided by the present invention;

[0068] Figure 8a 、 Figure 8b 、Figure 8c and Figure 8d is the schematic diagram of the flow path of Embodiment 2 when the cabinet-type air conditioner indoor unit provided by the present invention is in the downward air outlet mode;

[0069] Figure 9a 、 Figure 9b and Figure 9c is the schematic diagram of the flow path of Embodiment 2 when the cabinet-type air conditioner indoor unit provided by the present invention is in the simultaneous upper and lower air outlet mode;

[0070] Figure 10 is the schematic diagram of the internal structure of Embodiment 3 of the cabinet-type air conditioner indoor unit provided by the present invention;

[0071] Figure 11a 、 Figure 11b 、 Figure 11c and Figure 11d is the schematic diagram of the flow path of Embodiment 3 when the cabinet-type air conditioner indoor unit provided by the present invention is in the upward air outlet mode;

[0072] Figure 12a 、 Figure 12b 、 Figure 12c and Figure 12d is the schematic diagram of the flow path of Embodiment 3 when the cabinet-type air conditioner indoor unit provided by the present invention is in the downward air outlet mode;

[0073] Figure 13a 、 Figure 13b and Figure 13c is the schematic diagram of the flow path of Embodiment 3 when the cabinet-type air conditioner indoor unit provided by the present invention is in the simultaneous upper and lower air outlet mode;

[0074] Figure 14a and Figure 14b is the schematic diagram of the internal structure of Embodiment 4 of the cabinet-type air conditioner indoor unit provided by the present invention;

[0075] Figure 15a and Figure 15b is the schematic diagram of the flow path of Embodiment 4 when the cabinet-type air conditioner indoor unit provided by the present invention is in the upward air outlet mode (simultaneous air intake at the lower front air outlet and the lower rear air outlet);

[0076] Figure 16a and Figure 16b is the schematic diagram of the flow path of Embodiment 4 when the cabinet-type air conditioner indoor unit provided by the present invention is in the upward air outlet mode (simultaneous air intake at the lower front air outlet and the upper rear air outlet);

[0077] Figure 17a and Figure 17b is the schematic diagram of the flow path of Embodiment 4 when the cabinet-type air conditioner indoor unit provided by the present invention is in the upward air outlet mode (simultaneous air intake at the lower front air outlet, the lower rear air outlet and the upper rear air outlet);

[0078] Figure 18a and Figure 18bSchematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the upper air outlet mode (intake air from the lower front air outlet and discharge air from the upper front air outlet);

[0079] Figure 19a and Figure 19b Schematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the lower air outlet mode (intake air from the upper front air outlet and the upper rear air outlet simultaneously);

[0080] Figure 20a and Figure 20b Schematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the lower air outlet mode (intake air from the upper front air outlet and the lower rear air outlet simultaneously);

[0081] Figure 21a and Figure 21b Schematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the lower air outlet mode (intake air from the upper front air outlet, the upper rear air outlet and the lower rear air outlet simultaneously);

[0082] Figure 22a and Figure 22b Schematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the lower air outlet mode (intake air from the upper front air outlet and discharge air from the lower front air outlet);

[0083] Figure 23a and Figure 23b Schematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the upper and lower simultaneous air outlet mode (intake air from the upper rear air outlet and the lower rear air outlet simultaneously);

[0084] Figure 24a and Figure 24b Schematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the upper and lower simultaneous air outlet mode (intake air from the upper rear air outlet);

[0085] Figure 25a and Figure 25b Schematic diagram of the flow path of Embodiment 4 when the cabinet air conditioner indoor unit provided by the present invention is in the upper and lower simultaneous air outlet mode (intake air from the lower rear air outlet);

[0086] In the figure:

[0087] 1 - housing; 11 - front side wall of the housing; 111 - lower front air outlet; 12 - left side wall of the housing; 13 - right side wall of the housing; 14 - rear side wall of the housing; 141 - lower rear air outlet; 15 - top wall of the housing; 151 - upper front air outlet; 152 - upper rear air outlet; 16 - base; 17 - housing cavity;

[0088] 21 - Upper wind blade cavity; 211 - Upper wind blade cavity C1 outlet; 212 - Upper wind blade cavity C2 outlet; 213 - Upper wind blade cavity C3 outlet; 214 - Upper wind blade; 22 - Lower wind blade cavity; 221 - Lower wind blade cavity D1 outlet; 222 - Lower wind blade cavity D2 outlet; 223 - Lower wind blade cavity D3 outlet; 224 - Lower wind blade; 23 - Middle wind blade cavity; 231 - Upper outlet of middle wind blade cavity; 232 - Lower outlet of middle wind blade cavity; 233 - Middle wind blade; 24 - Upper air duct; 241 - A1 vent; 242 - A2 vent; 25 - Lower air duct; 251 - B1 vent; 252 - B2 vent; 261 - Upper auxiliary air duct; 262 - Middle auxiliary air duct; 263 - Lower auxiliary air duct; 271 - Upper sub - air duct; 272 - Lower sub - air duct;

[0089] 311 - First upper wind - blocking structure; 312 - Second upper wind - blocking structure; 313 - Third upper wind - blocking structure; 314 - Fourth upper wind - blocking structure; 321 - First lower wind - blocking structure; 322 - Second lower wind - blocking structure; 323 - Third lower wind - blocking structure; 324 - Fourth lower wind - blocking structure;

[0090] 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 implementation manners

[0091] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0092] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0093] It should be understood that the term " / and / " used herein is only a description of the associated relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0094] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the commodity or system comprising said element.

[0095] When a traditional cabinet-type air conditioner indoor unit heats and blows hot air, due to the principle that hot air rises, the hot air stays at the upper part of the room and cannot come down, resulting in a phenomenon of hot upper part and cold lower part, and the return air temperature is low. More energy needs to be consumed to reach the same outlet air temperature, and the energy-saving effect is poor. To address the above problems, the prior art realizes reversible up-and-down air supply by arranging an axial flow fan or a mixed flow fan in the air duct. However, when using an axial flow fan, the manufacturing cost requirements for the motor are high, and the axial flow fan has problems such as short air supply distance and low air pressure. When using a mixed flow fan, the fan speed is high, the noise is large, and the efficiency is low.

[0096] As Figure 1 shown, the present invention creatively provides a cabinet-type air conditioner indoor unit, which includes a housing 1 and an air duct assembly. The housing 1 encloses a housing cavity 17, and an upper front air outlet 151 is formed at the upper part of the housing 1, and a lower front air outlet 111 is formed at the lower part of the housing 1. The air duct assembly is arranged in the housing cavity 17, and the air duct assembly forms an upper air duct 24, a dynamic air blade cavity and a lower air duct 25 arranged in sequence from top to bottom. The upper air duct 24 is communicated with the room through the upper front air outlet 151, the lower air duct 25 is communicated with the room through the lower front air outlet 111, and the dynamic air blade cavity is communicated with the housing cavity 17 through the air blade cavity inlet. The upper air duct 24 can be selectively communicated with the dynamic air blade cavity or the housing cavity 17. The lower air duct 25 can be selectively communicated with the dynamic air blade cavity or the housing cavity 17.

[0097] An upper front air vent 151 is formed in the upper part of the housing 1, and a lower front air vent 111 is formed in the lower part of the housing 1. The positions of the upper front air vent 151 and the lower front air vent 111 are optimized, and the distance between the upper front air vent 151 and the lower front air vent 111 is increased. During refrigeration, the upper air duct 24 is communicated with the power fan chamber, and the lower air duct 25 is communicated with the housing chamber 17. The indoor unit of the cabinet air conditioner forms an upper air outlet main flow path, and indoor air can enter the upper air outlet main flow path from the lower front air vent 111 and be discharged from the upper front air vent 151. During heating, the upper air duct 24 is communicated with the housing chamber 17, and the lower air duct 25 is communicated with the power fan chamber. The indoor unit of the cabinet air conditioner forms a lower air outlet main flow path, and indoor air can enter the lower air outlet main flow path from the upper front air vent 151 and be discharged from the lower front air vent 111. By making full use of the principle that cold air sinks during refrigeration and hot air rises during heating, large swirling eddies are formed 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 made uniform, and the air flow velocity is stable. The time required for the room where the indoor unit is located to reach the set temperature is shortened, and the comfort of the air is improved.

[0098] Specifically, the housing 1 includes a housing top wall 15 and a housing front side wall 11. The upper front air vent 151 is formed in the housing top wall 15, and the lower front air vent 111 is formed in the lower part of the housing front side wall 11. The upper part of the upper air duct 24 is communicated with the room through the upper front air vent 151, and the lower part of the lower air duct 25 is communicated with the room through the lower front air vent 111. The lower part of the upper air duct 24 can be selectively communicated with the power fan chamber or the housing chamber 17. The upper part of the lower air duct 25 can be selectively communicated with the power fan chamber or the housing chamber 17.

[0099] To address the problem of insufficient air intake, in this embodiment, an upper rear air vent 152 is further formed in the upper part of the housing 1. The upper front air vent 151 and the upper rear air vent 152 are arranged opposite to each other front and back, and the upper rear air vent 152 can be selectively opened or closed. A lower rear air vent 141 is further formed in the lower part of the housing 1. The lower front air vent 111 and the lower rear air vent 141 are arranged opposite to each other front and back, and the lower rear air vent 141 can be selectively opened or closed. The upper part of the housing chamber 17 is communicated with the room through the upper rear air vent 152, and the lower part of the housing chamber 17 is communicated with the room through the lower rear air vent 141.

[0100] When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, the indoor unit of the cabinet air conditioner can form a lower auxiliary air intake flow path with the lower rear air vent 141 assisting in air intake.

[0101] When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, the indoor unit of the cabinet air conditioner can form an upper auxiliary air intake flow path with the upper rear air vent 152 assisting in air intake.

[0102] When both the upper rear air vent 152 and the lower rear air vent 141 are open, the indoor unit of the cabinet air conditioner can form an upper and lower auxiliary air intake flow path with both the upper rear air vent 152 and the lower rear air vent 141 assisting in air intake simultaneously.

[0103] The upper auxiliary air inlet flow path, the lower auxiliary air inlet flow path, and the upper and lower auxiliary air inlet flow paths increase the air inlet volume and reduce the air inlet resistance; reduce the noise of the indoor unit, and ensure that the air outlet volume and noise meet the requirements;

[0104] The combination of the auxiliary air inlet flow path and the main flow path can achieve different air inlet and outlet modes, specifically:

[0105] When the upper auxiliary air inlet flow path is combined with the upper air outlet main flow path, the indoor unit of the cabinet air conditioner can achieve the first air inlet and outlet mode of simultaneously inhaling air from the upper rear air outlet 152 and the lower front air outlet 111 and exhaling air from the upper front air outlet 151;

[0106] When the lower auxiliary air inlet flow path is combined with the upper air outlet main flow path, the indoor unit of the cabinet air conditioner can achieve the second air inlet and outlet mode of simultaneously inhaling air from the lower rear air outlet 141 and the lower front air outlet 111 and exhaling air from the upper front air outlet 151;

[0107] When the upper and lower auxiliary air inlet flow paths are combined with the upper air outlet main flow path, the indoor unit of the cabinet air conditioner can achieve the third air inlet and outlet mode of simultaneously inhaling air from the upper rear air outlet 152, the lower rear air outlet 141, and the lower front air outlet 111 and exhaling air from the upper front air outlet 151;

[0108] When the upper auxiliary air inlet flow path is combined with the lower air outlet main flow path, the indoor unit of the cabinet air conditioner can achieve the fourth air inlet and outlet mode of simultaneously inhaling air from the upper rear air outlet 152 and the upper front air outlet 151 and exhaling air from the lower front air outlet 111;

[0109] When the lower auxiliary air inlet flow path is combined with the lower air outlet main flow path, the indoor unit of the cabinet air conditioner can achieve the fifth air inlet and outlet mode of simultaneously inhaling air from the lower rear air outlet 141 and the upper front air outlet 151 and exhaling air from the lower front air outlet 111;

[0110] When the upper and lower auxiliary air inlet flow paths are combined with the lower air outlet main flow path, the indoor unit of the cabinet air conditioner can achieve the sixth air inlet and outlet mode of simultaneously inhaling air from the upper rear air outlet 152, the lower rear air outlet 141, and the upper front air outlet 151 and exhaling air from the lower front air outlet 111.

[0111] Specifically, the upper rear air outlet 152 is further formed on the top wall 15 of the housing; the housing 1 further includes a housing rear side wall 14, a housing front side wall 11 and the housing rear side wall 14 are arranged opposite to each other front and back, and both the housing front side wall 11 and the housing rear side wall 14 are connected to the housing top wall 15; the lower part of the housing rear side wall 14 is formed with a lower rear air outlet 141.

[0112] Furthermore, when at least one of the upper rear air outlet 152 and the lower rear air outlet 141 is opened and both the upper air duct 24 and the lower air duct 25 are communicated with the dynamic air blade cavity, the indoor unit of the cabinet air conditioner can form an upper and lower simultaneous air outlet main flow path with simultaneous air outlet from the upper front air outlet 151 and the lower front air outlet 111.

[0113] In addition, the housing 1 includes a left housing side wall 12, and the air impeller chamber inlet includes a left air impeller chamber inlet, which corresponds to the left housing side wall 12; the air conditioner indoor unit further includes an indoor heat exchanger 4 disposed in the housing chamber 17, and a filtering device is provided on the air inlet surface of the indoor heat exchanger 4 for filtering the air in the housing chamber 17; the indoor heat exchanger 4 includes a left heat exchanger, and the left heat exchanger is disposed between the left housing side wall 12 and the left air impeller chamber inlet;

[0114] The housing 1 further includes a right housing side wall 13, and the air impeller chamber inlet includes a right air impeller chamber inlet, which corresponds to the right housing side wall 13; the air conditioner indoor unit further includes an indoor heat exchanger 4, and the indoor heat exchanger 4 includes a right heat exchanger, and the right heat exchanger is disposed between the right housing side wall 13 and the right air impeller chamber inlet.

[0115] Furthermore, 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 towards the upper air duct 24, and the F1 heat exchange section 42 extends towards the lower air duct 25; the E1 heat exchange section 41 is disposed above the F1 heat exchange section 42, and satisfies: 90° ≤ ɑ ≤ 180°;

[0116] The right heat exchanger includes an E2 heat exchange section 43 and an F2 heat exchange section 44; the E2 heat exchange section 43 extends towards the upper air duct 24, and the F2 heat exchange section 44 extends towards the lower air duct 25; the E2 heat exchange section 43 is disposed above the F2 heat exchange section 44, and satisfies: 90° ≤ β ≤ 180°;

[0117] Wherein, ɑ is the included angle between the heat exchange surface of the E1 heat exchange section 41 and the heat exchange surface of the F1 heat exchange section 42, and β is the included angle between the heat exchange surface of the E2 heat exchange section 43 and the heat exchange surface of the F2 heat exchange section 44.

[0118] The front housing side wall 11, the left housing side wall 12, the rear housing side wall 14 and the right housing side wall 13 are sequentially connected to form the housing chamber 17; the housing 1 further includes a base 16, the base 16 is disposed at the bottom of the front housing side wall 11, the left housing side wall 12, the rear housing side wall 14 and the right housing side wall 13, and the housing top wall 15 is disposed at the top of the front housing side wall 11, the left housing side wall 12, the rear housing side wall 14 and the right housing side wall 13. The front housing side wall 11, the left housing side wall 12, the rear housing side wall 14 and the right housing side wall 13 are sequentially connected and form the housing chamber 17 with the housing top wall 15 and the base 16.

[0119] Embodiment 1

[0120] As Figures 2 to 5cAs shown in the figure, in this embodiment, there are two dynamic wind blade cavities. The two dynamic wind blade cavities include an upper wind blade cavity 21 and a lower wind blade cavity 22. Then, an upper air duct 24, the upper wind blade cavity 21, the lower wind blade cavity 22, and a lower air duct 25 are arranged in sequence from top to bottom. An A1 ventilation opening 241 and an A2 ventilation opening 242 are formed at the lower part of the upper air duct 24. The A1 ventilation opening 241 communicates the upper air duct 24 with the housing cavity 17. An upper wind blade 214 is rotatably arranged in the upper wind blade cavity 21, and the upper wind blade cavity 21 is formed with an upper wind blade cavity inlet and an upper wind blade cavity C1 outlet 211. The upper wind blade cavity inlet communicates the upper wind blade cavity 21 with the housing cavity 17, and the upper wind blade cavity C1 outlet 211 communicates with the A2 ventilation opening 242. A first upper wind blocking structure 311 is rotatably arranged between the A1 ventilation opening 241 and the A2 ventilation opening 242. The first upper wind blocking structure 311 has a first working position and a second working position. When the first upper wind blocking structure 311 is in the first working position, the first upper wind blocking structure 311 opens the A1 ventilation opening 241 and closes the A2 ventilation opening 242, so that the upper air duct 24 communicates with the housing cavity 17, and the upper air duct 24 does not communicate with the upper wind blade cavity 21. When the first upper wind blocking structure 311 is in the second working position, the first upper wind blocking structure 311 closes the A1 ventilation opening 241 and opens the A2 ventilation opening 242, so that the upper air duct 24 does not communicate with the housing cavity 17 and the upper air duct 24 communicates with the upper wind blade cavity 21.

[0121] B1 ventilation opening 251 and a B2 ventilation opening 252 are formed at the upper part of the lower air duct 25. The B1 ventilation opening 251 communicates the lower air duct 25 with the housing cavity 17. A lower wind blade 224 is rotatably arranged in the lower wind blade cavity 22, and the lower wind blade cavity 22 is formed with a lower wind blade cavity inlet and a lower wind blade cavity D1 outlet 221. The lower wind blade cavity inlet communicates the lower wind blade cavity 22 with the housing cavity 17, and the lower wind blade cavity D1 outlet 221 communicates with the B2 ventilation opening 252. A first lower wind blocking structure 321 is rotatably arranged between the B1 ventilation opening 251 and the B2 ventilation opening 252. The first lower wind blocking structure 321 has a third working position and a fourth working position. When the first lower wind blocking structure 321 is in the third working position, the first lower wind blocking structure 321 opens the B1 ventilation opening 251 and closes the B2 ventilation opening 252, so that the lower air duct 25 communicates with the housing cavity 17 and the lower air duct 25 does not communicate with the lower wind blade cavity 22. When the first lower wind blocking structure 321 is in the fourth working position, the first lower wind blocking structure 321 closes the B1 ventilation opening 251 and opens the B2 ventilation opening 252, so that the lower air duct 25 does not communicate with the housing cavity 17 and the lower air duct 25 communicates with the lower wind blade cavity 22. Preferably, both the first upper wind blocking structure 311 and the first lower wind blocking structure 321 are baffles.

[0122] When the first upper wind blocking structure 311 is in the second working position and the first lower wind blocking structure 321 is in the third working position, the upper wind blade 214 rotates and the lower wind blade 224 does not rotate, and indoor air can flow through the upper air outlet main path.

[0123] When the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, the upper wind blades 214 do not rotate and the lower wind blades 224 rotate, and indoor air can flow through the lower air outlet main flow path.

[0124] Specifically, the upper air outlet modes include the following four types:

[0125] ① When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, and when the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the upper wind blades 214 rotate. The indoor air near the lower rear air outlet 141 enters the housing cavity 17 through the lower rear air outlet 141; the indoor air near the lower front air outlet 111 enters the lower air duct 25 through the lower front air outlet 111, and then enters the housing cavity 17 through the B1 ventilation opening 251; the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the upper air duct 24 through the A2 ventilation opening 242, and is discharged through the upper front air outlet 151.

[0126] ② When the upper rear air outlet 152 is opened and the lower rear air outlet 141 is closed, and when the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the upper wind blades 214 rotate. The indoor air near the upper rear air outlet 152 enters the housing cavity 17 through the upper rear air outlet 152; the indoor air near the lower front air outlet 111 enters the lower air duct 25 through the lower front air outlet 111, and then enters the housing cavity 17 through the B1 ventilation opening 251; the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the upper air duct 24 through the A2 ventilation opening 242, and is discharged through the upper front air outlet 151.

[0127] ③ When both the upper rear air outlet 152 and the lower rear air outlet 141 are opened, and when the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the upper wind blades 214 rotate. The indoor air near the upper rear air outlet 152 enters the housing cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the housing cavity 17 through the lower rear air outlet 141; the indoor air near the lower front air outlet 111 enters the lower air duct 25 through the lower front air outlet 111, and then enters the housing cavity 17 through the B1 ventilation opening 251; the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the upper air duct 24 through the A2 ventilation opening 242, and is discharged through the upper front air outlet 151.

[0128] ④When both the upper rear air vent 152 and the lower rear air vent 141 are closed, and when the first upper windscreen structure 311 is in the second working position and the first lower windscreen structure 321 is in the third working position, the upper wind blades 214 are rotated, and the indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 air vent 251; the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the upper air duct 24 through the A2 air vent 242, and is discharged through the upper front air vent 151;

[0129] Through the above four upper air outlet methods, different cooling requirements can be met.

[0130] The lower air outlet methods include the following four:

[0131] ①When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and when the first upper windscreen structure 311 is in the first working position and the first lower windscreen structure 321 is in the fourth working position, the lower wind blades 224 are rotated, and the indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; the indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 air vent 241; the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, then enters the lower air duct 25 through the B2 air vent 252, and is discharged through the lower front air vent 111;

[0132] ②When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, and when the first upper windscreen structure 311 is in the first working position and the first lower windscreen structure 321 is in the fourth working position, the lower wind blades 224 are rotated, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 air vent 241; the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, then enters the lower air duct 25 through the B2 air vent 252, and is discharged through the lower front air vent 111;

[0133] ③When both the upper rear air vent 152 and the lower rear air vent 141 are open, and when the first upper windscreen structure 311 is in the first working position and the first lower windscreen structure 321 is in the fourth working position, the lower wind blades 224 are rotated, and the indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 air vent 241; the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, then enters the lower air duct 25 through the B2 air vent 252, and is discharged through the lower front air vent 111;

[0134] ④When both the upper rear air vent 152 and the lower rear air vent 141 are closed, and when the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, the lower wind blades 224 are rotated. The indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 air vent 241; the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, then enters the lower air duct 25 through the B2 air vent 252, and is discharged through the lower front air vent 111.

[0135] Through the above four downward air outlet methods, different heating requirements can be met.

[0136] The upper and lower simultaneous air outlet method includes the following three:

[0137] ①When both the upper rear air vent 152 and the lower rear air vent 141 are open, and when the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the fourth working position, the upper wind blades 214 and the lower wind blades 224 are both rotated. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; a part of the air in the housing cavity 17 enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the upper air duct 24 through the A2 air vent 242, and is discharged through the upper front air vent 151; another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, then enters the lower air duct 25 through the B2 air vent 252, and is discharged through the lower front air vent 111.

[0138] ②When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and when the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the fourth working position, the upper wind blades 214 and the lower wind blades 224 are both rotated. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; a part of the air in the housing cavity 17 enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the upper air duct 24 through the A2 air vent 242, and is discharged through the upper front air vent 151; another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, then enters the lower air duct 25 through the B2 air vent 252, and is discharged through the lower front air vent 111.

[0139] ③When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, and when the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the fourth working position, both the upper wind blades 214 and the lower wind blades 224 rotate, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; a part of the air in the housing cavity 17 enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151; another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111.

[0140] An A1 vent 241 is formed on the side wall of the lower part of the upper air duct 24, and an A2 vent 242 is formed at the lower end of the upper air duct 24; a B1 vent 251 is formed on the upper side wall of the lower air duct 25, and a B2 vent 252 is formed at the upper end of the lower air duct 25.

[0141] Embodiment 2

[0142] As Figures 6 to 9c shown, in this embodiment, there is one power wind blade cavity and the power wind blade cavity is the middle wind blade cavity 23, and the upper air duct 24, the middle wind blade cavity 23 and the lower air duct 25 are arranged in sequence from top to bottom; an A1 vent 241 and an A2 vent 242 are formed in the lower part of the upper air duct 24, and the A1 vent 241 communicates the upper air duct 24 and the housing cavity 17; a B1 vent 251 and a B2 vent 252 are formed in the upper part of the lower air duct 25, and the B1 vent 251 communicates the lower air duct 25 and the housing cavity 17; a middle wind blade 233 is rotatably arranged in the middle wind blade cavity 23 and the middle wind blade cavity 23 is formed with a middle wind blade cavity inlet, a middle wind blade cavity upper outlet 231 and a middle wind blade cavity lower outlet 232; the middle wind blade cavity 23 inlet communicates the middle wind blade cavity 23 and the housing cavity 17, the middle wind blade cavity upper outlet 231 and the A2 vent 242 are communicated, and the middle wind blade cavity lower outlet 232 and the B2 vent 252 are communicated;

[0143] A first upper wind deflector structure 311 is rotatably arranged between the A1 vent 241 and the A2 vent 242. The first upper wind deflector structure 311 has a first working position and a second working position. When the first upper wind deflector structure 311 is in the first working position, the first upper wind deflector structure 311 opens the A1 vent 241 and closes the A2 vent 242 at the same time, so that the upper air duct 24 is communicated with the housing cavity 17 and the upper air duct 24 is not communicated with the power wind blade cavity; when the first upper wind deflector structure 311 is in the second working position, the first upper wind deflector structure 311 closes the A1 vent 241 and opens the A2 vent 242 at the same time, so that the upper air duct 24 is not communicated with the housing cavity 17 and the upper air duct 24 is communicated with the power wind blade cavity;

[0144] A first lower air baffle structure 321 is rotatably arranged between a B1 vent 251 and a B2 vent 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 vent 251 and closes the B2 vent 252, so that the lower air duct 25 communicates with the housing cavity 17 and the lower air duct 25 does not communicate with the power fan 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 vent 251 and opens the B2 vent 252, so that the lower air duct 25 does not communicate with the housing cavity 17 and the lower air duct 25 communicates with the power fan blade cavity;

[0145] 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 fan blade 233 rotates, and indoor air can flow through the upper air outlet main path;

[0146] 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 fan blade 233 rotates, and indoor air can flow through the lower air outlet main path;

[0147] Furthermore, a second upper air baffle structure 312 and a second lower air baffle structure 322 are also rotatably arranged in the intermediate fan blade cavity 23; the second upper air baffle structure 312 is close to the upper outlet 231 of the intermediate fan blade cavity, and the second lower air baffle structure 322 is close to the upper and lower outlets 232 of the intermediate fan blade cavity; both the second upper air baffle structure 312 and the second lower air baffle structure 322 are adapted to the profile of the intermediate fan blade cavity 23; preferably, both the second upper air baffle structure 312 and the second lower air baffle structure 322 are baffles;

[0148] 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 and the first lower air baffle structure 321 cooperate to direct the air in the intermediate fan blade cavity 23 to the upper air duct 24;

[0149] 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 and the first upper air baffle structure 311 cooperate to direct the air in the intermediate fan blade cavity 23 to the lower air duct 25.

[0150] Specifically, the upper air outlet modes include the following four types:

[0151] ① When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, and the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the intermediate air blade 233 rotates. The indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151.

[0152] ② When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the intermediate air blade 233 rotates. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; the indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151.

[0153] ③ When both the upper rear air vent 152 and the lower rear air vent 141 are open, and the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the intermediate air blade 233 rotates. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151.

[0154] ④ When both the upper rear air vent 152 and the lower rear air vent 141 are closed, and the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the intermediate air blade 233 rotates. The indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151.

[0155] Through the above four upper air outlet methods, different cooling requirements can be met.

[0156] The lower air outlet methods include the following four:

[0157] ① When the upper rear air outlet 152 is open and the lower rear air outlet 141 is closed, and the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, the intermediate air blade 233 is rotated. The indoor air near the upper rear air outlet 152 enters the housing cavity 17 through the upper rear air outlet 152; the indoor air near the upper front air outlet 151 enters the upper air duct 24 through the upper front air outlet 151, and then enters the housing cavity 17 through the A1 ventilation opening 241; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, and then enters the lower air duct 25 through the B2 ventilation opening 252 and is discharged through the lower front air outlet 111;

[0158] ② When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is open, and the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, the intermediate air blade 233 is rotated. The indoor air near the lower rear air outlet 141 enters the housing cavity 17 through the lower rear air outlet 141; the indoor air near the upper front air outlet 151 enters the upper air duct 24 through the upper front air outlet 151, and then enters the housing cavity 17 through the A1 ventilation opening 241; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, and then enters the lower air duct 25 through the B2 ventilation opening 252 and is discharged through the lower front air outlet 111;

[0159] ③ When both the upper rear air outlet 152 and the lower rear air outlet 141 are open, and the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, the intermediate air blade 233 is rotated. The indoor air near the upper rear air outlet 152 enters the housing cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the housing cavity 17 through the lower rear air outlet 141; the indoor air near the upper front air outlet 151 enters the upper air duct 24 through the upper front air outlet 151, and then enters the housing cavity 17 through the A1 ventilation opening 241; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, and then enters the lower air duct 25 through the B2 ventilation opening 252 and is discharged through the lower front air outlet 111;

[0160] ④ When both the upper rear air outlet 152 and the lower rear air outlet 141 are closed, and the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, the intermediate air blade 233 is rotated. The indoor air near the upper front air outlet 151 enters the upper air duct 24 through the upper front air outlet 151, and then enters the housing cavity 17 through the A1 ventilation opening 241; the air in the housing cavity 17 then enters the intermediate air blade cavity 23 through the inlet of the intermediate air blade cavity 23, and then enters the lower air duct 25 through the B2 ventilation opening 252 and is discharged through the lower front air outlet 111;

[0161] Through the above four downward air outlet modes, different heating requirements can be met.

[0162] The up-and-down simultaneous air outlet mode includes the following three types:

[0163] ① When both the upper rear air outlet 152 and the lower rear air outlet 141 are opened, and the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the fourth working position, the middle air blade 233 rotates. The indoor air near the upper rear air outlet 152 enters the housing cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the housing cavity 17 through the lower rear air outlet 141. The air in the housing cavity 17 enters the middle air blade cavity 23 through the inlet of the middle air blade cavity 23. Part of the air enters the upper air duct 24 through the A2 ventilation opening 242 and is discharged through the upper front air outlet 151. Another part of the air enters the lower air duct 25 through the B2 ventilation opening 252 and is discharged through the lower front air outlet 111.

[0164] ② When the upper rear air outlet 152 is opened and the lower rear air outlet 141 is closed, and the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the fourth working position, the middle air blade 233 rotates. The indoor air near the upper rear air outlet 152 enters the housing cavity 17 through the upper rear air outlet 152. The air in the housing cavity 17 enters the middle air blade cavity 23 through the inlet of the middle air blade cavity 23. Part of the air enters the upper air duct 24 through the A2 ventilation opening 242 and is discharged through the upper front air outlet 151. Another part of the air enters the lower air duct 25 through the B2 ventilation opening 252 and is discharged through the lower front air outlet 111.

[0165] ③ When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, and the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the fourth working position, the middle air blade 233 rotates. The indoor air near the lower rear air outlet 141 enters the housing cavity 17 through the lower rear air outlet 141. The air in the housing cavity 17 enters the middle air blade cavity 23 through the inlet of the middle air blade cavity 23. Part of the air enters the upper air duct 24 through the A2 ventilation opening 242 and is discharged through the upper front air outlet 151. Another part of the air enters the lower air duct 25 through the B2 ventilation opening 252 and is discharged through the lower front air outlet 111.

[0166] An A1 ventilation opening 241 is formed on the side wall of the lower part of the upper air duct 24, and an A2 ventilation opening 242 is formed at the lower end of the upper air duct 24. A B1 ventilation opening 251 is formed on the side wall of the upper part of the lower air duct 25, and a B2 ventilation opening 252 is formed at the upper end of the lower air duct 25.

[0167] Embodiment 3

[0168] As Figures 10 to 13cAs shown in the figure, in this embodiment, A1 vent 241 and A2 vent 242 are formed at the lower part of the upper air duct 24; there are two power fan blade cavities, and the two power fan blade cavities include an upper fan blade cavity 21 and a lower fan blade cavity 22 arranged in sequence from top to bottom; an upper fan blade 214 is rotatably arranged in the upper fan blade cavity 21, and the upper fan blade cavity 21 is formed with an upper fan blade cavity inlet, an upper fan blade cavity C1 outlet 211, an upper fan blade cavity C2 outlet 212 and an upper fan blade cavity C3 outlet 213; the upper fan blade cavity inlet communicates with the upper fan blade cavity 21 and the housing cavity 17, and the upper fan blade cavity C1 outlet 211 communicates with the A2 vent 242;

[0169] A first upper wind blocking structure 311 is rotatably arranged between the A1 vent 241 and the A2 vent 242. The first upper wind blocking structure 311 has a first working position and a second working position. When the first upper wind blocking structure 311 is in the first working position, the first upper wind blocking structure 311 opens the A1 vent 241 and closes the A2 vent 242 at the same time, so that the upper air duct 24 communicates with the housing cavity 17, and the upper air duct 24 does not communicate with the upper fan blade cavity 21; when the first upper wind blocking structure 311 is in the second working position, the first upper wind blocking structure 311 closes the A1 vent 241 and opens the A2 vent 242 at the same time, so that the upper air duct 24 does not communicate with the housing cavity 17, and the upper air duct 24 communicates with the upper fan blade cavity 21;

[0170] B1 vent 251 and B2 vent 252 are formed at the upper part of the lower air duct 25; a lower fan blade 224 is rotatably arranged in the lower fan blade cavity 22, and the lower fan blade cavity 22 is formed with a lower fan blade cavity inlet, a lower fan blade cavity D1 outlet 221, a lower fan blade cavity D2 outlet 222 and a lower fan blade cavity D3 outlet 223; the lower fan blade cavity inlet communicates with the lower fan blade cavity 22 and the housing cavity 17, and the lower fan blade cavity D1 outlet 221 communicates with the B2 vent 252;

[0171] A first lower wind blocking structure 321 is rotatably arranged between the B1 vent 251 and the B2 vent 252. The first lower wind blocking structure 321 has a third working position and a fourth working position. When the first lower wind blocking structure 321 is in the third working position, the first lower wind blocking structure 321 opens the B1 vent 251 and closes the B2 vent 252 at the same time, so that the lower air duct 25 communicates with the housing cavity 17, and the lower air duct 25 does not communicate with the lower fan blade cavity 22; when the first lower wind blocking structure 321 is in the fourth working position, the first lower wind blocking structure 321 closes the B1 vent 251 and opens the B2 vent 252 at the same time, so that the lower air duct 25 does not communicate with the housing cavity 17, and the lower air duct 25 communicates with the power fan blade cavity.

[0172] Further, 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 arranged in sequence from top to bottom; the upper auxiliary air duct 261 communicates with the upper front air outlet 151 and the outlet 212 of the upper air blade cavity C2, the lower auxiliary air duct 263 communicates with the lower front air outlet 111 and the outlet 222 of the lower air blade cavity D2, and the middle auxiliary air duct 262 communicates with the outlet 213 of the upper air blade cavity C3 and the outlet 223 of the lower air blade cavity D3;

[0173] A third upper wind blocking structure 313 is rotatably arranged at the outlet 212 of the upper air blade cavity C2, and the third upper wind blocking structure 313 can open or close the outlet 212 of the upper air blade cavity C2; when the outlet 212 of the upper air blade cavity C2 is open, the upper air blade cavity 21 communicates with the upper auxiliary air duct 261, and when the outlet 212 of the upper air blade cavity C2 is closed, the upper air blade cavity 21 does not communicate with the upper auxiliary air duct 261; a third lower wind blocking structure 323 is rotatably arranged at the outlet 222 of the lower air blade cavity D2, and the third lower wind blocking structure 323 can open or close the outlet 222 of the lower air blade cavity D2; when the outlet 222 of the lower air blade cavity D2 is open, the lower air blade cavity 22 communicates with the lower auxiliary air duct 263, and when the outlet 222 of the lower air blade cavity D2 is closed, the lower air blade cavity 22 does not communicate with the lower auxiliary air duct 263;

[0174] When the third upper wind blocking structure 313 opens the outlet 212 of the upper air blade cavity C2 and the third lower wind blocking structure 323 closes the outlet 222 of the lower air blade cavity D2, the lower air duct 25, the lower air blade cavity 22, the middle auxiliary air duct 262, the upper air blade cavity 21, the upper air duct 24, and the upper auxiliary air duct 261 communicate and form an upper air outlet main flow path;

[0175] When the third upper wind blocking structure 313 closes the outlet 212 of the upper air blade cavity C2 and the third lower wind blocking structure 323 opens the outlet 222 of the lower air blade cavity D2, the upper air duct 24, the upper air blade cavity 21, the middle auxiliary air duct 262, the lower air blade cavity 22, the lower air duct 25, and the lower auxiliary air duct 263 communicate and form a lower air outlet main flow path;

[0176] When the third upper wind blocking structure 313 closes the outlet 212 of the upper air blade cavity C2 and the third lower wind blocking structure 323 closes the outlet 222 of the lower air blade cavity D2, the upper air blade cavity 21 and the upper air duct 24 and the lower air blade cavity 22 and the lower air duct 25 form an upper and lower simultaneous air outlet main flow path; preferably, both the third upper wind blocking structure 313 and the third lower wind blocking structure 323 are baffles.

[0177] Specifically, the upper air outlet mode includes the following four types:

[0178] ①When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the third upper wind deflector structure 313 opens the upper airfoil cavity C2 outlet 212 and the third lower wind deflector structure 323 closes the lower airfoil cavity D2 outlet 222, both the upper airfoil 214 and the lower airfoil 224 rotate. The indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; a part of the air in the housing cavity 17 then enters the lower airfoil cavity 22 through the lower airfoil cavity inlet, then enters the middle auxiliary air duct 262 through the lower airfoil cavity D2 outlet 222, and enters the upper airfoil cavity 21; another part of the air in the housing cavity 17 then enters the upper airfoil cavity 21 through the upper airfoil cavity inlet; a part of the air in the upper airfoil cavity 21 is discharged through the A2 vent 242, the upper air duct 24 and the upper front air vent 151; another part of the air in the upper airfoil cavity 21 is discharged through the upper airfoil cavity C2 outlet 212, the upper auxiliary air duct 261 and the upper front air vent 151.

[0179] ②When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, the first upper wind deflector structure 311 is in the second working position and the first lower wind deflector structure 321 is in the third working position, the third upper wind deflector structure 313 opens the upper airfoil cavity C2 outlet 212 and the third lower wind deflector structure 323 closes the lower airfoil cavity D2 outlet 222, both the upper airfoil 214 and the lower airfoil 224 rotate. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; the indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; a part of the air in the housing cavity 17 then enters the lower airfoil cavity 22 through the lower airfoil cavity inlet, then enters the middle auxiliary air duct 262 through the lower airfoil cavity D2 outlet 222, and enters the upper airfoil cavity 21; another part of the air in the housing cavity 17 then enters the upper airfoil cavity 21 through the upper airfoil cavity inlet; a part of the air in the upper airfoil cavity 21 is discharged through the A2 vent 242, the upper air duct 24 and the upper front air vent 151; another part of the air in the upper airfoil cavity 21 is discharged through the upper airfoil cavity C2 outlet 212, the upper auxiliary air duct 261 and the upper front air vent 151.

[0180] ③When both the upper rear air vent 152 and the lower rear air vent 141 are open, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the third working position, the third upper wind deflector structure 313 opens the outlet 212 of the upper wind blade cavity C2, and the third lower wind deflector structure 323 closes the outlet 222 of the lower wind blade cavity D2, the upper wind blade 214 and the lower wind blade 224 both rotate. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; a part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and then enters the middle auxiliary air duct 262 through the outlet 222 of the lower wind blade cavity D2 and enters the upper wind blade cavity 21; another part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet; a part of the air in the upper wind blade cavity 21 is discharged through the A2 vent 242, the upper air duct 24 and the upper front air vent 151; another part of the air in the upper wind blade cavity 21 is discharged through the outlet 212 of the upper wind blade cavity C2, the upper auxiliary air duct 261 and the upper front air vent 151;

[0181] ④When both the upper rear air vent 152 and the lower rear air vent 141 are closed, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the third working position, the third upper wind deflector structure 313 opens the outlet 212 of the upper wind blade cavity C2, and the third lower wind deflector structure 323 closes the outlet 222 of the lower wind blade cavity D2, the upper wind blade 214 and the lower wind blade 224 both rotate. The indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; a part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and then enters the middle auxiliary air duct 262 through the outlet 222 of the lower wind blade cavity D2 and enters the upper wind blade cavity 21; another part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet; a part of the air in the upper wind blade cavity 21 is discharged through the A2 vent 242, the upper air duct 24 and the upper front air vent 151; another part of the air in the upper wind blade cavity 21 is discharged through the outlet 212 of the upper wind blade cavity C2, the upper auxiliary air duct 261 and the upper front air vent 151;

[0182] Through the above four upper air outlet methods, different cooling requirements can be met.

[0183] The lower air outlet methods include the following four:

[0184] ①When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, and the third upper wind deflector structure 313 closes the outlet 212 of the upper wind blade cavity C2 and the third lower wind deflector structure 323 opens the outlet 222 of the lower wind blade cavity D2, both the upper wind blade 214 and the lower wind blade 224 rotate. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; the indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 vent 241; a part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the middle auxiliary air duct 262 through the outlet 212 of the upper wind blade cavity C2, and enters the lower wind blade cavity 22; another part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet; a part of the air in the lower wind blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25 and the lower front air vent 111; another part of the air in the lower wind blade cavity 22 is discharged through the outlet 222 of the lower wind blade cavity D2, the lower auxiliary air duct 263 and the lower front air vent 111.

[0185] ②When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, and the third upper wind deflector structure 313 closes the outlet 212 of the upper wind blade cavity C2 and the third lower wind deflector structure 323 opens the outlet 222 of the lower wind blade cavity D2, both the upper wind blade 214 and the lower wind blade 224 rotate. The indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 vent 241; a part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the middle auxiliary air duct 262 through the outlet 212 of the upper wind blade cavity C2, and enters the lower wind blade cavity 22; another part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet; a part of the air in the lower wind blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25 and the lower front air vent 111; another part of the air in the lower wind blade cavity 22 is discharged through the outlet 222 of the lower wind blade cavity D2, the lower auxiliary air duct 263 and the lower front air vent 111.

[0186] ③When both the upper rear air vent 152 and the lower rear air vent 141 are open, the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, and the third upper wind deflector structure 313 closes the outlet 212 of the upper wind blade cavity C2 and the third lower wind deflector structure 323 opens the outlet 222 of the lower wind blade cavity D2, the upper wind blade 214 and the lower wind blade 224 both rotate. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; the indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 vent 241; a part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the middle auxiliary air duct 262 through the outlet 212 of the upper wind blade cavity C2, and enters the lower wind blade cavity 22; another part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet; a part of the air in the lower wind blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25 and the lower front air vent 111; another part of the air in the lower wind blade cavity 22 is discharged through the outlet 222 of the lower wind blade cavity D2, the lower auxiliary air duct 263 and the lower front air vent 111.

[0187] ④When both the upper rear air vent 152 and the lower rear air vent 141 are closed, the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, and the third upper wind deflector structure 313 closes the outlet 212 of the upper wind blade cavity C2 and the third lower wind deflector structure 323 opens the outlet 222 of the lower wind blade cavity D2, the upper wind blade 214 and the lower wind blade 224 both rotate. The indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 vent 241; a part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, then enters the middle auxiliary air duct 262 through the outlet 212 of the upper wind blade cavity C2, and enters the lower wind blade cavity 22; another part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet; a part of the air in the lower wind blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25 and the lower front air vent 111; another part of the air in the lower wind blade cavity 22 is discharged through the outlet 222 of the lower wind blade cavity D2, the lower auxiliary air duct 263 and the lower front air vent 111.

[0188] Through the above four downward air outlet methods, different heating requirements can be met.

[0189] The up-and-down simultaneous air outlet method includes the following three:

[0190] ①When both the upper rear air vent 152 and the lower rear air vent 141 are open, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the fourth working position, the third upper wind deflector structure 313 closes the outlet 212 of the upper blade cavity C2, and the third lower wind deflector structure 323 closes the outlet 222 of the lower blade cavity D2, both the upper blade 214 and the lower blade 224 rotate. Indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; a part of the 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 outlet 211 of the upper blade cavity C1 and the A2 vent 242, and is discharged through the upper front air vent 151; another part of the 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 outlet 221 of the lower blade cavity D1 and the B2 vent 252, and is discharged through the lower front air vent 111.

[0191] ②When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the fourth working position, the third upper wind deflector structure 313 closes the outlet 212 of the upper blade cavity C2, and the third lower wind deflector structure 323 closes the outlet 222 of the lower blade cavity D2, both the upper blade 214 and the lower blade 224 rotate. Indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; a part of the 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 outlet 211 of the upper blade cavity C1 and the A2 vent 242, and is discharged through the upper front air vent 151; another part of the 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 outlet 221 of the lower blade cavity D1 and the B2 vent 252, and is discharged through the lower front air vent 111.

[0192] ③When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the fourth working position, the third upper wind deflector structure 313 closes the outlet 212 of the upper blade cavity C2, and the third lower wind deflector structure 323 closes the outlet 222 of the lower blade cavity D2, both the upper blade 214 and the lower blade 224 rotate. Indoor air near the lower rear air vent 141 enters the housing cavity 17 through the upper rear air vent 152; a part of the 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 outlet 211 of the upper blade cavity C1 and the A2 vent 242, and is discharged through the upper front air vent 151; another part of the 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 outlet 221 of the lower blade cavity D1 and the B2 vent 252, and is discharged through the lower front air vent 111.

[0193] The side wall at the lower part of the upper air duct 24 is formed with an A1 ventilation opening 241, and the lower end of the upper air duct 24 is formed with an A2 ventilation opening 242; the upper side wall of the lower air duct 25 is formed with a B1 ventilation opening 251, and the upper end of the lower air duct 25 is formed with a B2 ventilation opening 252.

[0194] Embodiment 4

[0195] As Figures 14a to 25b shown, the lower part of the upper air duct 24 is formed with an A1 ventilation opening 241 and an A2 ventilation opening 242; there are two power wind blade cavities, and the two power wind blade cavities include an upper wind blade cavity 21 and a lower wind blade cavity 22 arranged in sequence from top to bottom; an upper wind blade 214 is rotatably arranged in the upper wind blade cavity 21, and the upper wind blade cavity 21 is formed with an upper wind blade cavity inlet, an upper wind blade cavity C1 outlet 211 and an upper wind blade cavity C3 outlet 213; the upper wind blade cavity inlet communicates with the upper wind blade cavity 21 and the housing cavity 17, the upper wind blade cavity C1 outlet 211 communicates with the A2 ventilation opening 242, and a lower auxiliary air duct 272 is formed between the upper wind blade cavity C3 outlet 213 and the lower front air outlet 111; a fourth upper air baffle structure 314 is rotatably arranged at the upper wind blade cavity C3 outlet 213, and the fourth upper air baffle structure 314 can open or close the upper wind blade cavity C3 outlet 213;

[0196] A first upper air baffle structure 311 is rotatably arranged between the A1 ventilation opening 241 and the A2 ventilation opening 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 ventilation opening 241 and closes the A2 ventilation opening 242, so that the upper air duct 24 communicates with the housing cavity 17 and the upper air duct 24 does not communicate with the upper wind 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 ventilation opening 241 and opens the A2 ventilation opening 242, so that the upper air duct 24 does not communicate with the housing cavity 17 and the upper air duct 24 communicates with the upper wind blade cavity 21;

[0197] The upper part of the lower air duct 25 is formed with a B1 ventilation opening 251 and a B2 ventilation opening 252; a lower wind blade 224 is rotatably arranged in the lower wind blade cavity 22, and the lower wind blade cavity 22 is formed with a lower wind blade cavity inlet, a lower wind blade cavity D3 outlet 223 and a lower wind blade cavity D1 outlet 221; the lower wind blade cavity inlet communicates with the lower wind blade cavity 22 and the housing cavity 17, the lower wind blade cavity D1 outlet 221 communicates with the B2 ventilation opening 252, and an upper auxiliary air duct 271 is formed between the lower wind blade cavity D3 outlet 223 and the upper front air outlet 151; a fourth lower air baffle structure 324 is rotatably arranged at the lower wind blade cavity D3 outlet 223, and the fourth lower air baffle structure 324 can open or close the lower wind blade cavity D3 outlet 223; preferably, both the fourth upper air baffle structure 314 and the fourth lower air baffle structure 324 are baffles;

[0198] A first lower air baffle structure 321 is rotatably arranged between a B1 vent 251 and a B2 vent 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 vent 251 and closes the B2 vent 252, so that the lower air duct 25 communicates with the housing cavity 17 and the lower air duct 25 does not communicate with the lower air 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 vent 251 and opens the B2 vent 252, so that the lower air duct 25 does not communicate with the housing cavity 17 and the lower air duct 25 communicates with the lower air blade cavity 22.

[0199] 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 air blade cavity C3 outlet 213 is closed and the lower air blade cavity D3 outlet 223 is opened, the lower air duct 25, the upper air blade cavity 21 and the upper air duct 24 are sequentially communicated to form an upper air outlet main flow path, and the lower air duct 25, the lower air blade cavity 22 and the upper auxiliary air duct 271 are sequentially communicated to form an upper air outlet auxiliary flow path.

[0200] 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 air blade cavity C3 outlet 213 is opened and the lower air blade cavity D3 outlet 223 is closed, the upper air duct 24, the lower air blade cavity 22 and the lower air duct 25 are sequentially communicated to form a lower air outlet main flow path, and the upper air duct 24, the upper air blade cavity 21 and the lower auxiliary air duct 272 are sequentially communicated to form a lower air outlet auxiliary flow path.

[0201] Specifically, the upper air outlet modes include the following four:

[0202] ① When the upper rear air vent 152 is closed and the lower rear air vent 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 air blade cavity C3 outlet 213 is closed and the lower air blade cavity D3 outlet 223 is opened, both the upper air blade 214 and the lower air blade 224 rotate. The indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141. The indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251. A part of the air in the housing cavity 17 then enters the lower air blade cavity 22 through the lower air blade cavity inlet, and is then discharged through the lower air blade cavity D3 outlet 223, the upper auxiliary air duct 271 and the upper front air vent 151. Another part of the air in the housing cavity 17 enters the upper air blade cavity 21 through the upper air blade cavity inlet, and is then discharged through the upper air blade cavity C1 outlet 211, the upper air duct 24 and the upper front air vent 151.

[0203] ② When the upper rear air vent 152 is open, the lower rear air vent 141 is closed, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the third working position, the upper wind blade cavity C3 outlet 213 is closed, and the lower wind blade cavity D3 outlet 223 is open, both the upper wind blades 214 and the lower wind blades 224 rotate. Indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; a part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is then discharged through the lower wind blade cavity D3 outlet 223, the upper auxiliary air duct 271, and the upper front air vent 151; another part of the air in the housing cavity 17 enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is then discharged through the upper wind blade cavity C1 outlet 211, the upper air duct 24, and the upper front air vent 151;

[0204] ③ When both the upper rear air vent 152 and the lower rear air vent 141 are open, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the third working position, the upper wind blade cavity C3 outlet 213 is closed, and the lower wind blade cavity D3 outlet 223 is open, both the upper wind blades 214 and the lower wind blades 224 rotate. Indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141; indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; a part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is then discharged through the lower wind blade cavity D3 outlet 223, the upper auxiliary air duct 271, and the upper front air vent 151; another part of the air in the housing cavity 17 enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is then discharged through the upper wind blade cavity C1 outlet 211, the upper air duct 24, and the upper front air vent 151;

[0205] ④ When both the upper rear air vent 152 and the lower rear air vent 141 are closed, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the third working position, the upper wind blade cavity C3 outlet 213 is closed, and the lower wind blade cavity D3 outlet 223 is open, both the upper wind blades 214 and the lower wind blades 224 rotate. Indoor air near the lower front air vent 111 enters the lower air duct 25 through the lower front air vent 111, and then enters the housing cavity 17 through the B1 vent 251; a part of the air in the housing cavity 17 then enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is then discharged through the lower wind blade cavity D3 outlet 223, the upper auxiliary air duct 271, and the upper front air vent 151; another part of the air in the housing cavity 17 enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is then discharged through the upper wind blade cavity C1 outlet 211, the upper air duct 24, and the upper front air vent 151;

[0206] Through the above four upper air outlet methods, different cooling requirements can be met.

[0207] The lower air outlet methods include the following four:

[0208] ① When the upper rear air outlet 152 is open and the lower rear air outlet 141 is closed, the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, and the upper wind blade cavity C3 outlet 213 is open and the lower wind blade cavity D3 outlet 223 is closed, both the upper wind blade 214 and the lower wind blade 224 rotate. The indoor air near the upper rear air outlet 152 enters the housing cavity 17 through the upper rear air outlet 152; the indoor air near the upper front air outlet 151 enters the upper air duct 24 through the upper front air outlet 151, and then enters the housing cavity 17 through the A1 vent 241; a part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and then is discharged through the upper wind blade cavity C3 outlet 213, the lower auxiliary air duct 272 and the lower front air outlet 111; another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and then is discharged through the lower wind blade cavity D1 outlet 221, the lower air duct 25 and the lower front air outlet 111;

[0209] ② When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is open, the first upper wind deflector structure 311 is in the first working position and the first lower wind deflector structure 321 is in the fourth working position, and the upper wind blade cavity C3 outlet 213 is open and the lower wind blade cavity D3 outlet 223 is closed, both the upper wind blade 214 and the lower wind blade 224 rotate. The indoor air near the lower rear air outlet 141 enters the housing cavity 17 through the lower rear air outlet 141; the indoor air near the upper front air outlet 151 enters the upper air duct 24 through the upper front air outlet 151, and then enters the housing cavity 17 through the A1 vent 241; a part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and then is discharged through the upper wind blade cavity C3 outlet 213, the lower auxiliary air duct 272 and the lower front air outlet 111; another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and then is discharged through the lower wind blade cavity D1 outlet 221, the lower air duct 25 and the lower front air outlet 111;

[0210] ③ When both the upper rear air vent 152 and the lower rear air vent 141 are open, the first upper wind deflector structure 311 is in the first working position, the first lower wind deflector structure 321 is in the fourth working position, the upper wind blade cavity C3 outlet 213 is open, and the lower wind blade cavity D3 outlet 223 is closed, both the upper wind blade 214 and the lower wind blade 224 rotate. The indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141. The indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 vent 241. A part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is discharged through the upper wind blade cavity C3 outlet 272 and the lower front air vent 111. Another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is discharged through the lower wind blade cavity D1 outlet 221, the lower air duct 25 and the lower front air vent 111.

[0211] ④ When both the upper rear air vent 152 and the lower rear air vent 141 are closed, the first upper wind deflector structure 311 is in the first working position, the first lower wind deflector structure 321 is in the fourth working position, the upper wind blade cavity C3 outlet 213 is open, and the lower wind blade cavity D3 outlet 223 is closed, both the upper wind blade 214 and the lower wind blade 224 rotate. The indoor air near the upper front air vent 151 enters the upper air duct 24 through the upper front air vent 151, and then enters the housing cavity 17 through the A1 vent 241. A part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is discharged through the upper wind blade cavity C3 outlet 272 and the lower front air vent 111. Another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is discharged through the lower wind blade cavity D1 outlet 221, the lower air duct 25 and the lower front air vent 111.

[0212] Through the above four downward air outlet methods, different heating requirements can be met.

[0213] The upper and lower simultaneous air outlet methods include the following three:

[0214] ① When both the upper rear air vent 152 and the lower rear air vent 141 are open, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the fourth working position, and both the upper wind blade cavity C3 outlet 213 and the lower wind blade cavity D3 outlet 223 are closed, rotate both the upper wind blade 214 and the lower wind blade 224. Indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152, and indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141. A part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is then discharged through the upper wind blade cavity C1 outlet 211, the upper air duct 24, and the upper front air vent 151. Another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is then discharged through the lower wind blade cavity D1 outlet 221, the lower air duct 25, and the lower front air vent 111.

[0215] ② When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the fourth working position, and both the upper wind blade cavity C3 outlet 213 and the lower wind blade cavity D3 outlet 223 are closed, rotate both the upper wind blade 214 and the lower wind blade 224. Indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152. A part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is then discharged through the upper wind blade cavity C1 outlet 211, the upper air duct 24, and the upper front air vent 151. Another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is then discharged through the lower wind blade cavity D1 outlet 221, the lower air duct 25, and the lower front air vent 111.

[0216] ③ When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, the first upper wind deflector structure 311 is in the second working position, the first lower wind deflector structure 321 is in the fourth working position, and both the upper wind blade cavity C3 outlet 213 and the lower wind blade cavity D3 outlet 223 are closed, rotate both the upper wind blade 214 and the lower wind blade 224. Indoor air near the lower rear air vent 141 enters the housing cavity 17 through the lower rear air vent 141. A part of the air in the housing cavity 17 then enters the upper wind blade cavity 21 through the upper wind blade cavity inlet, and is then discharged through the upper wind blade cavity C1 outlet 211, the upper air duct 24, and the upper front air vent 151. Another part of the air in the housing cavity 17 enters the lower wind blade cavity 22 through the lower wind blade cavity inlet, and is then discharged through the lower wind blade cavity D1 outlet 221, the lower air duct 25, and the lower front air vent 111.

[0217] On the side wall of the lower part of the upper air duct 24, an A1 ventilation opening 241 is formed, and at the lower end of the upper air duct 24, an A2 ventilation opening 242 is formed; on the upper side wall of the lower air duct 25, a B1 ventilation opening 251 is formed, and at the upper end of the lower air duct 25, a B2 ventilation opening 252 is formed.

[0218] Example 5

[0219] This embodiment provides a control method for a cabinet-type air conditioner indoor unit. The cabinet-type air conditioner indoor unit includes a housing 1 and an air duct assembly. The housing 1 encloses a housing cavity 17, and an upper front air outlet 151 and an upper rear air outlet 152 are formed in the upper part of the housing 1. A lower front air outlet 111 and a lower rear air outlet 141 are formed in the lower part of the housing 1. The air duct assembly is arranged in the housing cavity 17, and the air duct assembly forms an upper air outlet main flow path with air entering from the lower front air outlet 111 and exiting from the upper front air outlet 151, a lower air outlet main flow path with air entering from the upper front air outlet 151 and exiting from the lower front air outlet 111, and an upper and lower simultaneous air outlet main flow path with air exiting from both the upper front air outlet 151 and the lower front air outlet 111 simultaneously. A lower auxiliary air inlet flow path with air assisted by the lower rear air outlet 141, an upper auxiliary air inlet flow path with air assisted by the upper rear air outlet 152, and an upper and lower simultaneous auxiliary air inlet flow path with air assisted by both the upper rear air outlet 152 and the lower rear air outlet 141 are formed between the housing cavity 17 and the air duct assembly. Preferably, the cabinet-type air conditioner indoor unit is the cabinet-type air conditioner indoor unit in Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4.

[0220] The control method includes:

[0221] S1. Determine the target operation mode of the cabinet-type air conditioner indoor unit;

[0222] S2. Compare the current temperature of the indoor air with a first preset temperature;

[0223] S3. Determine the target main flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature;

[0224] S4. Control the cabinet-type air conditioner indoor unit to operate in the target operation mode, so that the indoor air flows through the target main flow path and the target auxiliary air inlet flow path;

[0225] Among them, the target operation mode is a heating mode or a cooling mode, the target main flow path is the upper air outlet main flow path or the lower air outlet main flow path or the upper and lower simultaneous air outlet main flow path; the target auxiliary air inlet flow path is the lower auxiliary air inlet flow path or the upper auxiliary air inlet flow path or the upper and lower simultaneous auxiliary air inlet flow path.

[0226] Further, S3 includes:

[0227] When the target operation mode is the cooling mode and the current temperature is greater than the first preset temperature, or when the target operation mode is the heating mode and the current temperature is less than the first preset temperature, the target main flow path is the upper and lower simultaneous air outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path;

[0228] Air is discharged through the upper front air outlet 151 and the lower front air outlet 111 simultaneously, realizing surround cooling or surround heating.

[0229] S3 also includes:

[0230] When the target operation mode is the refrigeration mode and the current temperature is less than or equal to the first preset temperature, calculate the upper and lower temperature difference between the indoor upper air temperature and the lower air temperature, and compare the upper and lower temperature difference with the second preset temperature;

[0231] When the upper and lower temperature difference is greater than the second preset temperature, the target main flow path is the upper air outlet main flow path, and the target auxiliary air inlet flow path is the lower auxiliary air inlet flow path; the temperature of the air entering from the lower rear air inlet is low, and the operation frequency of the compressor is reduced to achieve air conditioner energy saving;

[0232] When the upper and lower temperature difference is less than or equal to the second preset temperature, the target main flow path is the upper air outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path; realize that cold air does not blow on people and improve the comfort of the air conditioner;

[0233] In addition, S3 further includes:

[0234] When the target operation mode is the heating mode and the current temperature is greater than or equal to the first preset temperature, calculate the upper and lower temperature difference between the indoor upper air temperature and the lower air temperature, and compare the upper and lower temperature difference with the third preset temperature;

[0235] When the upper and lower temperature difference is greater than the third preset temperature, the target main flow path is the lower air outlet main flow path, and the target auxiliary air inlet flow path is the upper auxiliary air inlet flow path; the temperature of the air entering from the upper rear air inlet is high, and the operation frequency of the compressor is reduced to achieve air conditioner energy saving;

[0236] When the upper and lower temperature difference is less than or equal to the third preset temperature, the target main flow path is the lower air outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path; realize that hot air does not blow on the head and improve the comfort of the air conditioner.

[0237] An upper temperature sensor is arranged indoors at the upper layer for detecting the indoor upper air temperature; a lower temperature sensor is arranged indoors at the lower layer for detecting the indoor lower air temperature.

[0238] The above specifically shows and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structures, setting manners or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent settings included within the spirit and scope of the appended claims.

Claims

1. A floor-standing air conditioner indoor unit, characterized in that, It includes a housing and an air duct assembly. The housing encloses a housing cavity, and an upper front air inlet is formed in the upper part of the housing, and a lower front air inlet is formed in the lower part of the housing. The air duct assembly is arranged in the housing cavity, and the air duct assembly forms an upper air duct, a dynamic air blade cavity and a lower air duct which are arranged in sequence from top to bottom. The upper air duct communicates with the room through the upper front air inlet, the lower air duct communicates with the room through the lower front air inlet, and the dynamic air blade cavity communicates with the housing cavity through the air blade cavity inlet. The upper air duct can be selectively communicated with the dynamic air blade cavity or the housing cavity. The lower air duct can be selectively communicated with the dynamic air blade cavity or the housing cavity. When the upper air duct communicates with the dynamic air blade cavity and the lower air duct communicates with the housing cavity, the cabinet-type air conditioner indoor unit can form an upper air outlet main flow path with air entering from the lower front air inlet and exiting from the upper front air inlet. When the upper air duct communicates with the housing cavity and the lower air duct communicates with the dynamic air blade cavity, the cabinet-type air conditioner indoor unit can form a lower air outlet main flow path with air entering from the upper front air inlet and exiting from the lower front air inlet.

2. The indoor cabinet air conditioner according to claim 1, characterized in that, An upper rear air inlet is further formed in the upper part of the housing. The upper front air inlet and the upper rear air inlet are arranged opposite to each other front and back, and the upper rear air inlet can be selectively opened or closed. A lower rear air inlet is further formed in the lower part of the housing. The lower front air inlet and the lower rear air inlet are arranged opposite to each other front and back, and the lower rear air inlet can be selectively opened or closed. The upper part of the housing cavity communicates with the room through the upper rear air inlet, and the lower part of the housing cavity communicates with the room through the lower rear air inlet. When the upper rear air inlet is closed and the lower rear air inlet is open, the cabinet-type air conditioner indoor unit can form a lower auxiliary air inlet flow path with air entering through the lower rear air inlet as an auxiliary. When the upper rear air inlet is open and the lower rear air inlet is closed, the cabinet-type air conditioner indoor unit can form an upper auxiliary air inlet flow path with air entering through the upper rear air inlet as an auxiliary. When both the upper rear air inlet and the lower rear air inlet are open, the cabinet-type air conditioner indoor unit can form an upper and lower simultaneous auxiliary air inlet flow path with air entering simultaneously through the upper rear air inlet and the lower rear air inlet as an auxiliary.

3. The cabinet-type air conditioner indoor unit according to claim 2, characterized in that, When at least one of the upper rear air inlet and the lower rear air inlet is open and both the upper air duct and the lower air duct communicate with the dynamic air blade cavity, the cabinet-type air conditioner indoor unit can form an upper and lower simultaneous air outlet main flow path with air exiting simultaneously from the upper front air inlet and the lower front air inlet.

4. The cabinet-type air conditioner indoor unit according to claim 3, characterized in that, An A1 ventilation opening and an A2 ventilation opening are formed in the lower part of the upper air duct. A first upper air baffle structure is movably arranged between the A1 ventilation opening and the A2 ventilation opening. The first upper air baffle structure has a first working position and a second working position. When the first upper air baffle structure is in the first working position, the first upper air baffle structure opens the A1 ventilation opening and closes the A2 ventilation opening, so that the upper air duct communicates with the housing cavity and the upper air duct does not communicate with the dynamic air blade cavity. When the first upper air baffle structure is in the second working position, the first upper air baffle structure closes the A1 ventilation opening and opens the A2 ventilation opening, so that the upper air duct does not communicate with the housing cavity and the upper air duct communicates with the dynamic air blade cavity. An upper part of the lower air duct is formed with a B1 ventilation opening and a B2 ventilation opening; a first lower air baffle structure is movably arranged between the B1 ventilation opening and the B2 ventilation opening. The first lower air baffle structure has a third working position and a fourth working position. When the first lower air baffle structure is in the third working position, the first lower air baffle structure opens the B1 ventilation opening and closes the B2 ventilation opening, so that the lower air duct is communicated with the housing cavity and the lower air duct is not communicated with the power fan blade cavity; when the first lower air baffle structure is in the fourth working position, the first lower air baffle structure closes the B1 ventilation opening and opens the B2 ventilation opening, so that the lower air duct is not communicated with the housing cavity and the lower air duct is communicated with the power fan blade cavity.

5. The cabinet-type air conditioner indoor unit according to claim 4, characterized in that, There are two power fan blade cavities, and the two power fan blade cavities include an upper fan blade cavity and a lower fan blade cavity which are arranged in sequence from top to bottom; an upper fan blade is rotatably arranged in the upper fan blade cavity, and an upper fan blade cavity inlet and an upper fan blade cavity outlet are formed in the upper fan blade cavity; the upper fan blade cavity inlet communicates the upper fan blade cavity with the housing cavity, and the upper fan blade cavity outlet is communicated with the A2 ventilation opening; A lower fan blade is rotatably arranged in the lower fan blade cavity, and a lower fan blade cavity inlet and a lower fan blade cavity outlet are formed in the lower fan blade cavity; the lower fan blade cavity inlet communicates the lower fan blade cavity with the housing cavity, and the lower fan blade cavity outlet is communicated with the B2 ventilation opening; When the first upper air baffle structure is in the second working position and the first lower air baffle structure is in the third working position, the upper fan blade rotates and the lower fan blade does not rotate, and indoor air can flow through the upper air outlet main flow path; When the first upper air baffle structure is in the first working position and the first lower air baffle structure is in the fourth working position, the upper fan blade does not rotate and the lower fan blade rotates, and indoor air can flow through the lower air outlet main flow path.

6. The indoor unit of the cabinet air conditioner according to claim 4, characterized in that, There is one power fan blade cavity and the power fan blade cavity is an intermediate fan blade cavity; an intermediate fan blade is rotatably arranged in the intermediate fan blade cavity, and an intermediate fan blade cavity inlet, an intermediate fan blade cavity upper outlet and an intermediate fan blade cavity lower outlet are formed in the intermediate fan blade cavity; the intermediate fan blade cavity inlet communicates the intermediate fan blade cavity with the housing cavity, the intermediate fan blade cavity upper outlet is communicated with the A2 ventilation opening, and the intermediate fan blade cavity lower outlet is communicated with the B2 ventilation opening; When the first upper air baffle structure is in the second working position and the first lower air baffle structure is in the third working position, the intermediate fan blade rotates, and indoor air can flow through the upper air outlet main flow path; When the first upper air baffle structure is in the first working position and the first lower air baffle structure is in the fourth working position, the intermediate fan blade rotates, and indoor air can flow through the lower air outlet main flow path.

7. The cabinet-type air conditioner indoor unit according to claim 6, characterized in that, A second upper air baffle structure and a second lower air baffle structure are also rotatably arranged in the intermediate fan blade cavity; the second upper air baffle structure is close to the intermediate fan blade cavity upper outlet, and the second lower air baffle structure is close to the intermediate fan blade cavity lower outlet; both the second upper air baffle structure and the second lower air baffle structure are adapted to the profile line of the intermediate fan blade cavity; When the first upper wind shield structure is in the second working position and the first lower wind shield structure is in the third working position, the second lower wind shield structure and the first lower wind shield structure cooperate to direct the air in the middle blade cavity to the upper air duct; When the first upper wind shield structure is in the first working position and the first lower wind shield structure is in the fourth working position, the second upper wind shield structure and the first upper wind shield structure cooperate to direct the air in the middle blade cavity to the lower air duct.

8. The indoor unit of the cabinet air conditioner according to claim 4, characterized in that, There are two power blade cavities, and the two power blade cavities include an upper blade cavity and a lower blade cavity arranged in sequence from top to bottom; an upper blade is rotatably arranged 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 communicates with the upper blade cavity and the housing cavity, and the upper blade cavity C1 outlet communicates with the A2 vent; A lower blade is rotatably arranged in the lower blade cavity, 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 communicates with the lower blade cavity and the housing cavity, and the lower blade cavity D1 outlet communicates with the B2 vent; The air duct assembly is further formed with an upper auxiliary air duct, a middle auxiliary air duct, and a lower auxiliary air duct arranged in sequence from top to bottom; the upper auxiliary air duct communicates with the upper front air inlet and the upper blade cavity C2 outlet, the lower auxiliary air duct communicates with the lower front air inlet and the lower blade cavity D2 outlet, and the middle auxiliary air duct communicates with the upper blade cavity C3 outlet and the lower blade cavity D3 outlet.

9. The cabinet-type air conditioner indoor unit according to claim 8, wherein, A third upper wind shield structure is movably arranged at the upper blade cavity C2 outlet, and the third upper wind shield structure can open or close the upper blade cavity C2 outlet; a third lower wind shield structure is movably arranged at the lower blade cavity D2 outlet, and the third lower wind shield structure can open or close the lower blade cavity D2 outlet; When the third upper wind shield structure opens the upper blade cavity C2 outlet and the third lower wind shield 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 communicate to form the upper air outlet main flow path; When the third upper wind shield structure closes the upper blade cavity C2 outlet and the third lower wind shield 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 communicate to form the lower air outlet main flow path; When the third upper wind shield structure closes the upper blade cavity C2 outlet and the third lower wind shield structure closes the lower blade cavity D2 outlet, the upper blade cavity and the upper air duct and the lower blade cavity and the lower air duct form the upper and lower simultaneous air outlet main flow path.

10. The cabinet-type air conditioner indoor unit according to claim 4, characterized in that, There are two power wind blade chambers, and the two power wind blade chambers include an upper wind blade chamber and a lower wind blade chamber arranged in sequence from top to bottom; an upper wind blade is rotatably arranged in the upper wind blade chamber, and the upper wind blade chamber is formed with an upper wind blade chamber inlet, an upper wind blade chamber C1 outlet, and an upper wind blade chamber C3 outlet; the upper wind blade chamber inlet communicates the upper wind blade chamber with the housing chamber, the upper wind blade chamber C1 outlet communicates with the A2 ventilation opening, and a lower auxiliary air duct is formed between the upper wind blade chamber C3 outlet and the lower front air outlet; a fourth upper wind blocking structure is movably arranged at the upper wind blade chamber C3 outlet, and the fourth upper wind blocking structure can open or close the upper wind blade chamber C3 outlet; A lower wind blade is rotatably arranged in the lower wind blade chamber, and the lower wind blade chamber is formed with a lower wind blade chamber inlet, a lower wind blade chamber D1 outlet, and a lower wind blade chamber D3 outlet; The lower wind blade chamber inlet communicates the lower wind blade chamber with the housing chamber, the lower wind blade chamber D1 outlet communicates with the B2 ventilation opening, and an upper auxiliary air duct is formed between the lower wind blade chamber D3 outlet and the upper front air outlet; a fourth lower wind blocking structure is movably arranged at the lower wind blade chamber D3 outlet, and the fourth lower wind blocking structure can open or close the lower wind blade chamber D3 outlet.

11. The cabinet-type air conditioner indoor unit according to claim 10, characterized in that, When the first upper wind blocking structure is in the second working position, the first lower wind blocking structure is in the third working position, the upper wind blade chamber C3 outlet is closed, and the lower wind blade chamber D3 outlet is open, the lower air duct, the upper wind blade chamber, and the upper air duct are sequentially communicated to form the upper air outlet main flow path, and the lower air duct, the lower wind blade chamber, and the upper auxiliary air duct are sequentially communicated to form the upper air outlet auxiliary flow path; When the first upper wind blocking structure is in the first working position, the first lower wind blocking structure is in the fourth working position, the upper wind blade chamber C3 outlet is open, and the lower wind blade chamber D3 outlet is closed, the upper air duct, the lower wind blade chamber, and the lower air duct are sequentially communicated to form the lower air outlet main flow path, and the upper air duct, the upper wind blade chamber, and the lower auxiliary air duct are sequentially communicated to form the lower air outlet auxiliary flow path.

12. The cabinet-type air conditioner indoor unit according to claim 1, characterized in that, The housing includes a housing left side wall, the wind blade chamber inlet includes a wind blade chamber left inlet, and the wind blade chamber left inlet corresponds to the housing left side wall; the air conditioner indoor unit further includes an indoor heat exchanger, and the indoor heat exchanger includes a left heat exchanger, and the left heat exchanger is arranged between the housing left side wall and the wind blade chamber left inlet; and / or, The housing further includes a housing right side wall, the wind blade chamber inlet includes a wind blade chamber right inlet, and the wind blade chamber right inlet corresponds to the housing right side wall; the air conditioner indoor unit further includes an indoor heat exchanger, and the indoor heat exchanger includes a right heat exchanger, and the right heat exchanger is arranged between the housing right side wall and the wind blade chamber right inlet.

13. The cabinet-type air conditioner indoor unit according to claim 12, wherein, The left heat exchanger includes an E1 heat exchange section and an F1 heat exchange section; the E1 heat exchange section extends towards the upper air duct, and the F1 heat exchange section extends towards the lower air duct; the E1 heat exchange section is arranged above the F1 heat exchange section, and satisfies: 90°≤ɑ≤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 arranged above the F2 heat exchange section, and satisfies: 90°≤β≤180°; Wherein, ɑ is the included angle between the heat exchange surface of the E1 heat exchange section and the heat exchange surface of the F1 heat exchange section, and β is the included angle between the heat exchange surface of the E2 heat exchange section and the heat exchange surface of the F2 heat exchange section.

14. A control method for an indoor unit of a cabinet air conditioner, characterized in that, The cabinet-type air conditioner indoor unit includes a housing and an air duct assembly. The housing encloses a housing cavity, and the upper part of the housing forms an upper front air outlet and an upper rear air outlet, and the lower part of the housing forms a lower front air outlet and a lower rear air outlet; the air duct assembly is arranged in the housing cavity, and the air duct assembly forms an upper air outlet main flow path with air entering from the lower front air outlet and exiting from the upper front air outlet, a lower air outlet main flow path with air entering from the upper front air outlet and exiting from the lower front air outlet, and an upper and lower simultaneous air outlet main flow path with air exiting from the upper front air outlet and the lower front air outlet simultaneously; a lower auxiliary air inlet flow path with air entering from the lower rear air outlet for auxiliary air inlet is formed between the housing cavity and the air duct assembly, an upper auxiliary air inlet flow path with air entering from the upper rear air outlet for auxiliary air inlet, and an upper and lower simultaneous auxiliary air inlet flow path with air entering from the upper rear air outlet and the lower rear air outlet simultaneously for auxiliary air inlet; The control method includes: Determine the target operation mode of the cabinet-type air conditioner indoor unit; Compare the current temperature of the indoor air with the first preset temperature; Determine the target main flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature; Wherein, the target operation mode is a heating mode or a cooling mode, and the target main flow path is the upper air outlet main flow path or the lower air outlet main flow path or the upper and lower simultaneous air outlet main flow path; the target auxiliary air inlet flow path is the lower auxiliary air inlet flow path or the upper auxiliary air inlet flow path or the upper and lower simultaneous auxiliary air inlet flow path.

15. The control method of the cabinet air conditioner indoor unit according to claim 14, characterized in that, The determining the target main flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature includes: When the target operation mode is the cooling mode and the current temperature is greater than the first preset temperature, or when the target operation mode is the heating mode and the current temperature is less than the first preset temperature, the target main flow path is the upper and lower simultaneous air outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path.

16. The control method of the cabinet air conditioner indoor unit according to claim 15, characterized in that, The determining the target main flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature further includes: When the target operation mode is the cooling mode and the current temperature is less than or equal to the first preset temperature, calculate the upper and lower temperature difference between the upper layer air temperature and the lower layer air temperature in the room and compare the upper and lower temperature difference with the second preset temperature; When the upper and lower temperature difference is greater than the second preset temperature, the target main flow path is the upper air outlet main flow path, and the target auxiliary air inlet flow path is the lower auxiliary air inlet flow path; When the upper and lower temperature difference is less than or equal to the second preset temperature, the target main flow path is the upper air outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path.

17. The control method of the cabinet air conditioner indoor unit according to claim 15, characterized in that, Determining the target main flow path and the target auxiliary air inlet flow path according to the target operation mode and the comparison result of the current temperature and the first preset temperature further includes: When the target operation mode is the heating mode and the current temperature is greater than or equal to the first preset temperature, calculate the upper and lower temperature difference between the indoor upper air temperature and the lower air temperature and compare the upper and lower temperature difference with the third preset temperature; When the upper and lower temperature difference is greater than the third preset temperature, the target main flow path is the lower air outlet main flow path, and the target auxiliary air inlet flow path is the upper auxiliary air inlet flow path; When the upper and lower temperature difference is less than or equal to the third preset temperature, the target main flow path is the lower air outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path.

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