Cabinet air conditioner indoor unit and control method

Abstract

A cabinet air conditioner indoor unit and a control method. The cabinet air conditioner indoor unit comprises a housing (1) and an air channel assembly; the housing (1) defines a housing cavity (17); an upper front air port (151) and an upper rear air port (152) are formed in the upper portion of the housing (1); a lower front air port (111) and a lower rear air port (141) are formed in the lower portion of the housing (1); the air channel assembly is provided with an upper air channel (24), a power fan blade cavity and a lower air channel (25) which are sequentially arranged; the upper air channel (24) is in communication with the upper front air port (151), the lower air channel (25) is in communication with the lower front air port (111), and the power fan blade cavity is in communication with the housing cavity (17); when the upper air channel (24) is in communication with the power fan blade cavity and the lower air channel (25) is in communication with the housing cavity (17), an upper air outlet main flow path where air enters from the lower front air port (111) and is discharged from the upper front air port (151) is formed in the cabinet air conditioner indoor unit; when the upper air channel (24) is in communication with the housing cavity (17) and the lower air channel (25) is in communication with the power fan blade cavity, a lower air outlet main flow path where air enters from the upper front air port (151) and is discharged from the lower front air port (111) is formed in the cabinet air conditioner indoor unit; and when the upper rear air port (152) and / or the lower rear air port (141) are opened and the upper air channel (24) and the lower air channel (25) are both in communication with the power fan blade cavity, an air outlet main flow path wherein air is discharged simultaneously from the upper front air outlet (151) and the lower front air outlet (111) is formed in the cabinet air conditioner indoor unit. The cabinet air conditioner indoor unit improves the comfort of air.

Description

Cabinet-type air conditioner indoor unit and control method

[0001] This application claims priority to the patent application submitted to the State Intellectual Property Office of China on December 29, 2023, with application number 202311863033.4 and application name "A cabinet-type air-conditioning indoor unit and control method". Technical Field

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

[0003] In traditional cabinet air conditioner indoor units, the positions of the supply and return air vents remain relatively unchanged; however, indoor air temperature stratifies along the height direction, with hot air gathering in the upper part of the room and cold air gathering in the lower part. This results in these cabinet air conditioners being unable to meet both cooling and heating needs, resulting in uneven indoor air temperature distribution and poor comfort. Taking the above cabinet air conditioner indoor unit with supply air and return air as an example, the supply air vent is on the upper side of the indoor unit housing. During cooling, the cold air first quickly reaches the area above the human activity area and then naturally sinks, achieving rapid cooling and a minimal draft sensation, achieving both cooling and comfort effects. At the same time, because the return air vent is at the lower part of the indoor unit housing, the return air temperature is low, resulting in better energy savings. However, during heating, due to the principle of hot air rising, the hot air cannot descend from the upper part of the room, resulting in a phenomenon of hot top and cold bottom. The return air temperature is low, and more energy is consumed to achieve the same air outlet temperature, resulting in poor energy savings.

[0004] To address the above problems, the existing technology achieves reversible upward and downward air supply by installing 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 the problems of short air supply distance and low wind pressure; when using a mixed flow fan, the fan speed is high, the noise is high and the efficiency is low.

[0005] Summary of the Invention

[0006] In view of this, the present application provides a cabinet air-conditioning indoor unit and a control method to solve the problems in the prior art of setting an axial flow fan or a mixed flow fan in the air duct to achieve reversible up and down air supply, such as a small air supply range, slow temperature change and uneven distribution of indoor air, and a long time required for the room where the indoor unit is located to reach the set temperature.

[0007] The present application provides a cabinet-type air-conditioning indoor unit, comprising a shell and an air duct assembly, wherein the shell is arranged to form a shell cavity, an upper front air outlet is formed on the upper portion of the shell, and a lower front air outlet is formed on the lower portion of the shell; the air duct assembly is arranged in the shell cavity, and the air duct assembly is formed with an upper air duct, a power fan chamber, and a lower air duct arranged in sequence from top to bottom; the upper air duct is connected to the room through the upper front air outlet, the lower air duct is connected to the room through the lower front air outlet, and the power fan chamber is connected to the shell cavity through a fan chamber inlet; the upper air duct can be selectively connected to the power fan chamber or the shell cavity; the lower air duct can be selectively connected to the power fan chamber or the shell cavity;

[0008] When the upper air duct is connected to the power blade cavity and the lower air duct is connected to the housing cavity, the cabinet air conditioner indoor unit may form an upper air outlet main flow path with air entering from the lower front air outlet and outgoing from the upper front air outlet;

[0009] When the upper air duct is connected to the shell cavity and the lower air duct is connected to the power fan blade cavity, the cabinet air conditioner indoor unit can form a lower air outlet main flow path with air entering from the upper front air outlet and outgoing from the lower front air outlet.

[0010] Further optionally, an upper rear air vent is further formed at the upper portion of the shell, the upper front air vent and the upper rear air vent are arranged opposite to each other front to back, and the upper rear air vent can be selectively opened or closed; a lower rear air vent is further formed at the lower portion of the shell, the lower front air vent and the lower rear air vent are arranged opposite to each other front to back, and the lower rear air vent can be selectively opened or closed; the upper portion of the shell cavity is connected to the indoor room through the upper rear air vent, and the lower portion of the shell cavity is connected to the indoor room through the lower rear air vent;

[0011] When the upper rear air vent is closed and the lower rear air vent is opened, the cabinet air conditioner indoor unit may form a lower auxiliary air inlet flow path assisted by the lower rear air vent;

[0012] When the upper rear air vent is opened and the lower rear air vent is closed, the cabinet-type air conditioner indoor unit may form an upper auxiliary air inlet flow path for assisting air intake by the upper rear air vent;

[0013] When the upper rear air vents and the lower rear air vents are both opened, the cabinet-type air-conditioning indoor unit may form an upper and lower simultaneous auxiliary air intake flow path in which the upper rear air vents and the lower rear air vents simultaneously assist in the air intake.

[0014] Further optionally, when at least one of the upper rear air outlet and the lower rear air outlet is opened and the upper air duct and the lower air duct are both connected to the power fan blade cavity, the cabinet air-conditioning indoor unit can form an upper and lower simultaneous air outlet main flow path from which air is discharged simultaneously by the upper front air outlet and the lower front air outlet.

[0015] Further optionally, an A1 vent and an A2 vent are formed at the lower portion of the upper air duct; a first upper wind shield structure is movably provided between the A1 vent and the A2 vent, the first upper wind shield structure having a first working position and a second working position, and when the first upper wind shield structure is in the first working position, the first upper wind shield structure opens the A1 vent and closes the A2 vent at the same time, so that the upper air duct is connected to the shell cavity and the upper air duct is not connected to the power blade cavity; when the first upper wind shield structure is in the second working position, the first upper wind shield structure closes the A1 vent and opens the A2 vent at the same time, so that the upper air duct is not connected to the shell cavity and the upper air duct is connected to the power blade cavity;

[0016] A B1 vent and a B2 vent are formed on the upper part of the downwind duct; a first lower wind shield structure is movably arranged between the B1 vent and the B2 vent, and the first lower wind shield structure has a third working position and a fourth working position. When the first lower wind shield structure is in the third working position, the first lower wind shield structure opens the B1 vent and closes the B2 vent at the same time, so that the downwind duct and the shell cavity are connected and the downwind duct and the power fan blade cavity are not connected; when the first lower wind shield structure is in the fourth working position, the first lower wind shield structure closes the B1 vent and opens the B2 vent at the same time, so that the downwind duct and the shell cavity are not connected and the downwind duct and the power fan blade cavity are connected.

[0017] Further optionally, two power blade cavities are provided, and the two power blade cavities include an upper blade cavity and a lower blade cavity arranged sequentially from top to bottom; an upper blade is rotatably provided in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet and an upper blade cavity outlet; the upper blade cavity inlet is connected to the upper blade cavity and the housing cavity, and the upper blade cavity outlet is connected to the A2 vent;

[0018] A downwind blade is rotatably provided in the downwind blade cavity, and the downwind blade cavity is formed with a downwind blade cavity inlet and a downwind blade cavity outlet; the downwind blade cavity inlet is connected to the downwind blade cavity and the housing cavity, and the downwind blade cavity outlet is connected to the B2 vent;

[0019] 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 upper wind blade rotates and the lower wind blade does not rotate, and indoor air can flow through the upper air outlet main channel;

[0020] 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 upper wind blades do not rotate and the lower wind blades rotate, and indoor air can flow through the lower air outlet main channel.

[0021] Further optionally, the power blade cavity is provided with one, and the power blade cavity is an intermediate blade cavity; an intermediate blade is rotatably provided in the intermediate blade cavity, and the intermediate blade cavity is formed with an intermediate blade cavity inlet, an intermediate blade cavity upper outlet, and an intermediate blade cavity lower outlet; the intermediate blade cavity inlet is connected to the intermediate blade cavity and the housing cavity, the intermediate blade cavity upper outlet is connected to the A2 vent, and the intermediate blade cavity lower outlet is connected to the B2 vent;

[0022] 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 middle fan blade rotates, and indoor air can flow through the upper air outlet main channel;

[0023] 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 middle fan blade rotates, and indoor air can flow through the lower air outlet main channel.

[0024] Further optionally, a second upper wind shield structure and a second lower wind shield structure are rotatably provided in the intermediate fan blade cavity; the second upper wind shield structure is close to the upper outlet of the intermediate fan blade cavity, and the second lower wind shield structure is close to the lower outlet of the intermediate fan blade cavity; the second upper wind shield structure and the second lower wind shield structure are both adapted to the contour line of the intermediate fan blade cavity;

[0025] 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 cooperates with the first lower wind shield structure to guide the air in the middle wind blade cavity to the upper wind duct;

[0026] 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 guide the air in the middle wind blade cavity to the lower wind duct.

[0027] Further optionally, two power blade cavities are provided, and the two power blade cavities include an upper blade cavity and a lower blade cavity arranged sequentially from top to bottom; an upper blade is rotatably provided in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet, an upper blade cavity C2 outlet, and an upper blade cavity C3 outlet; the upper blade cavity inlet is connected to the upper blade cavity and the housing cavity, and the upper blade cavity C1 outlet is connected to the A2 vent;

[0028] A downwind blade is rotatably provided in the downwind blade cavity, and the downwind blade cavity is formed with a downwind blade cavity inlet, a downwind blade cavity D1 outlet, a downwind blade cavity D2 outlet, and a downwind blade cavity D3 outlet; the downwind blade cavity inlet is connected to the downwind blade cavity and the housing cavity, and the downwind blade cavity D1 outlet is connected to the B2 vent;

[0029] The air duct assembly also 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 connects the upper front air port and the upper air blade cavity C2 outlet, the lower auxiliary air duct connects the lower front air port and the lower air blade cavity D2 outlet, and the middle auxiliary air duct connects the upper air blade cavity C3 outlet and the lower air blade cavity D3 outlet.

[0030] Further optionally, the upper air chamber C2 outlet is movably provided with a third upper wind shield structure, and the third upper wind shield structure can open or close the upper air chamber C2 outlet; the lower air chamber D2 outlet is movably provided with a third lower wind shield structure, and the third lower wind shield structure can open or close the lower air chamber D2 outlet;

[0031] When the third upper wind shielding structure opens the outlet of the upper wind blade cavity C2 and the third lower wind shielding structure closes the outlet of the lower wind blade cavity D2, the lower wind duct, the lower wind blade cavity, the middle auxiliary wind duct, the upper wind blade cavity, the upper wind duct and the upper auxiliary wind duct are connected to form the upper air outlet main flow path;

[0032] When the third upper wind shielding structure closes the outlet of the upper wind blade cavity C2 and the third lower wind shielding 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 connected to form the lower air outlet main path;

[0033] When the third upper wind shielding structure closes the outlet of the upper wind blade cavity C2 and the third lower wind shielding 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 paths.

[0034] Further optionally, two power blade cavities are provided, 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 provided in the upper blade cavity, and the upper blade cavity is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet, and an upper blade cavity C3 outlet; the upper blade cavity inlet is connected to the upper blade cavity and the housing cavity, the upper blade cavity C1 outlet is connected to the A2 vent, and a lower auxiliary air duct is formed between the upper blade cavity C3 outlet and the lower front air outlet; a fourth upper wind shielding structure is movably provided at the upper blade cavity C3 outlet, and the fourth upper wind shielding structure can open or close the upper blade cavity C3 outlet;

[0035] A downwind blade is rotatably provided in the downwind blade cavity, and the downwind blade cavity is formed with a downwind blade cavity inlet, a downwind blade cavity D1 outlet and a downwind blade cavity D3 outlet; the downwind blade cavity inlet is connected to the downwind blade cavity and the shell cavity, the downwind blade cavity D1 outlet is connected to the B2 vent, and an upper auxiliary air duct is formed between the downwind blade cavity D3 outlet and the upper front air outlet; a fourth downwind shield structure is movably provided at the downwind blade cavity D3 outlet, and the fourth downwind shield structure can open or close the downwind blade cavity D3 outlet.

[0036] Further optionally, when the first upper wind shielding structure is in the second working position, the first lower wind shielding structure is in the third working position, the outlet of the upper wind blade chamber C3 is closed, and the outlet of the lower wind blade chamber D3 is opened, the lower air duct, the upper wind blade chamber, and the upper air duct are sequentially connected 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 connected to form the upper air outlet auxiliary flow path;

[0037] When the first upper wind shield structure is in the first working position, the first lower wind shield structure is in the fourth working position, the upper wind blade cavity C3 outlet is open and the lower wind blade cavity D3 outlet is closed, the upper air duct, the lower wind blade cavity and the lower air duct are connected in sequence to form the lower air outlet main flow path, and the upper air duct, the upper wind blade cavity and the lower auxiliary air duct are connected in sequence to form the lower air outlet auxiliary flow path.

[0038] Further optionally, the shell includes a left side wall of the shell, the fan chamber inlet includes a left fan chamber inlet, and the left fan chamber inlet corresponds to the left side wall of the shell; the air conditioner indoor unit also includes an indoor heat exchanger, the indoor heat exchanger includes a left heat exchanger, and the left heat exchanger is arranged between the left side wall of the shell and the left fan chamber inlet; and / or,

[0039] The shell also includes a right side wall of the shell, the fan chamber inlet includes a right fan chamber inlet, and the right fan chamber inlet corresponds to the right side wall of the shell; the air conditioner indoor unit also includes an indoor heat exchanger, the indoor heat exchanger includes a right heat exchanger, and the right heat exchanger is arranged between the right side wall of the shell and the right fan chamber inlet.

[0040] Further optionally, the left heat exchanger includes an E1 heat exchange section and an F1 heat exchange section; the E1 heat exchange section extends toward the upper air duct, and the F1 heat exchange section extends toward the lower air duct; the E1 heat exchange section is disposed above the F1 heat exchange section and satisfies the following conditions: 90°≤ɑ≤180°; and / or,

[0041] The right heat exchanger includes an E2 heat exchange section and an F2 heat exchange section; the E2 heat exchange section extends toward the upper air duct, and the F2 heat exchange section extends toward the lower air duct; the E2 heat exchange section is disposed above the F2 heat exchange section and satisfies the following conditions: 90°≤β≤180°;

[0042] Wherein, ɑ is the 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 angle between the heat exchange surface of the E2 heat exchange section and the heat exchange surface of the F2 heat exchange section.

[0043] The hood is provided with a plurality of air intakes, the plurality of air intakes are connected to the hood and the plurality of air intakes are connected to the hood, and the plurality of air intakes are connected to the hood.

[0044] The control method includes:

[0045] Determining a target operating mode of the cabinet air conditioner indoor unit;

[0046] comparing the current temperature of the indoor air with a first preset temperature;

[0047] Determining a target main flow path and a target auxiliary air inlet flow path according to a target operating mode and a comparison result between the current temperature and a first preset temperature;

[0048] Among them, the target operating mode is heating mode or 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.

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

[0050] When the target operating mode is the cooling mode and the current temperature is greater than the first preset temperature, or when the target operating 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.

[0051] Further optionally, determining the target main flow path and the target auxiliary air inlet flow path according to the target operating mode and the comparison result between the current temperature and the first preset temperature further includes:

[0052] When the target operating mode is the cooling mode and the current temperature is less than or equal to the first preset temperature, calculating the temperature difference between the upper and lower indoor air temperatures and comparing the temperature difference with the second preset temperature;

[0053] 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;

[0054] 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 paths.

[0055] Further optionally, determining the target main flow path and the target auxiliary air inlet flow path according to the target operating mode and the comparison result between the current temperature and the first preset temperature further includes:

[0056] When the target operating mode is the heating mode and the current temperature is greater than or equal to the first preset temperature, calculating the temperature difference between the upper and lower indoor air temperatures and comparing the temperature difference with a third preset temperature;

[0057] When the upper and lower temperature difference is greater than the third preset temperature, the target main flow path is the lower outlet main flow path, and the target auxiliary air inlet flow path is the upper auxiliary air inlet flow path;

[0058] 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 outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower simultaneous auxiliary air inlet flow path.

[0059] Compared with the prior art, the beneficial effects of this application are mainly:

[0060] The vents in the upper and lower parts of the cabinet air conditioner is connected with the fan housing to increase the indoor air flow, thereby making the indoor air flow more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0062] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes should still fall within the scope of the technical contents disclosed in this application without affecting the efficacy and objectives that can be achieved by this application.

[0063] FIG1 is a schematic diagram of the external structure of an embodiment of a cabinet-type air-conditioning indoor unit provided by the present application;

[0064] FIG2 is a schematic diagram of the internal structure of a cabinet-type air-conditioning indoor unit according to an embodiment 1 of the present application;

[0065] Figures 3a, 3b, 3c and 3d are flow path diagrams of Example 1 of the cabinet-type air conditioner indoor unit provided by the present application when in the upper air outlet mode;

[0066] Figures 4a, 4b, 4c and 4d are flow path diagrams of Example 1 of the cabinet-type air conditioner indoor unit provided by the present application when in a downward airflow mode;

[0067] Figures 5a, 5b, and 5c are flow path diagrams of Example 1 of the cabinet-type air conditioner indoor unit provided by the present application when the indoor unit is in a top and bottom simultaneous air flow mode;

[0068] FIG6 is a schematic diagram of the internal structure of a cabinet-type air-conditioning indoor unit according to Embodiment 2 of the present application;

[0069] Figures 7a, 7b, 7c and 7d are flow path diagrams of Example 2 of the cabinet-type air conditioner indoor unit provided by the present application when in the upper air outlet mode;

[0070] Figures 8a, 8b, 8c and 8d are flow path diagrams of Example 2 of the cabinet-type air conditioner indoor unit provided by the present application when in a downward airflow mode;

[0071] Figures 9a, 9b, and 9c are flow path diagrams of Example 2 of the cabinet-type air conditioner indoor unit provided by the present application when the indoor unit is in a top and bottom simultaneous air flow mode;

[0072] FIG10 is a schematic diagram of the internal structure of a cabinet-type air-conditioning indoor unit according to Embodiment 3 of the present application;

[0073] Figures 11a, 11b, 11c and 11d are flow path diagrams of Example 3 of the cabinet-type air conditioner indoor unit provided by the present application when in the upper air outlet mode;

[0074] Figures 12a, 12b, 12c and 12d are flow path diagrams of Example 3 of the cabinet-type air conditioner indoor unit provided by the present application when in a downward airflow mode;

[0075] Figures 13a, 13b, and 13c are flow path diagrams of Example 3 of the cabinet-type air conditioner indoor unit provided by the present application when the indoor unit is in a top and bottom simultaneous air flow mode;

[0076] Figures 14a and 14b are schematic diagrams of the internal structure of a cabinet-type air-conditioning indoor unit according to a fourth embodiment of the present invention;

[0077] Figures 15a and 15b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in upper air outlet mode (air is simultaneously introduced from the lower front air outlet and the lower rear air outlet);

[0078] Figures 16a and 16b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in top air outlet mode (air is simultaneously admitted from the lower front air outlet and the upper rear air outlet);

[0079] Figures 17a and 17b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in upper air outlet mode (the lower front air outlet, the lower rear air outlet, and the upper rear air outlet are simultaneously intake air);

[0080] 18a and 18b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in the upper air outlet mode (lower front air outlet inlet and upper front air outlet outlet);

[0081] Figures 19a and 19b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in a downward air outlet mode (air is simultaneously introduced from the upper front air outlet and the upper rear air outlet);

[0082] Figures 20a and 20b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in a downward air outlet mode (air is simultaneously introduced from the upper front air outlet and the lower rear air outlet);

[0083] Figures 21a and 21b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in a downward air outlet mode (air is simultaneously introduced from the upper front air outlet, the upper rear air outlet, and the lower rear air outlet);

[0084] 22a and 22b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in a downward air outlet mode (upper front air outlet for air inlet and lower front air outlet for air outlet);

[0085] 23a and 23b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when in a simultaneous upper and lower air outlet mode (air is simultaneously inletted from the upper rear air outlet and the lower rear air outlet);

[0086] 24a and 24b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when the indoor unit is in a simultaneous upper and lower air outlet mode (air intake through the upper rear air outlet);

[0087] Figures 25a and 25b are flow path diagrams of Example 4 of the cabinet-type air conditioner indoor unit provided by the present application when the indoor unit is in a simultaneous upper and lower air outlet mode (air intake through the lower rear air outlet);

[0088] In the picture:

[0089] 1-housing; 11-housing front side wall; 111-lower front air outlet; 12-housing left side wall; 13-housing right side wall; 14-housing rear side wall; 141-lower rear air outlet; 15-housing top wall; 151-upper front air outlet; 152-upper rear air outlet; 16-base; 17-housing cavity;

[0090] 21 - Upper blade chamber; 211 - Upper blade chamber C1 outlet; 212 - Upper blade chamber C2 outlet; 213 - Upper blade chamber C3 outlet; 214 - Upper blade; 22 - Lower blade chamber; 221 - Lower blade chamber D1 outlet; 222 - Lower blade chamber D2 outlet; 223 - Lower blade chamber D3 outlet; 224 - Lower blade; 23 - Middle blade chamber; 231 - Middle blade chamber upper outlet; 232 - Middle blade chamber lower outlet; 233 - Middle 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 auxiliary air duct; 272 - Lower auxiliary air duct;

[0091] 311 - first upper windshield structure; 312 - second upper windshield structure; 313 - third upper windshield structure; 314 - fourth upper windshield structure; 321 - first lower windshield structure; 322 - second lower windshield structure; 323 - third lower windshield structure; 324 - fourth lower windshield structure;

[0092] 4-Indoor heat exchanger; 41-E1 heat exchange section; 42-F1 heat exchange section; 43-E2 heat exchange section; 44-F2 heat exchange section. DETAILED DESCRIPTION

[0093] The following specific embodiments illustrate the implementation of this application. Those familiar with the art can easily understand the other advantages and functions of this application from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0094] The terms used in the examples of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "the," and "the" used in the examples of this application and the appended claims are also intended to include plural forms, and unless the context clearly indicates otherwise, "a plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0095] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0096] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0097] When a traditional cabinet air conditioner indoor unit is heating and delivering hot air, the hot air cannot flow down to the upper part of the room due to the principle that hot air floats upward, resulting in a phenomenon of hot top and cold bottom. The return air temperature is low, and more energy is consumed to achieve the same air outlet temperature, resulting in poor energy saving effect. To address the above problems, the existing technology achieves reversible upward and downward air supply by installing axial flow fans or mixed flow fans in the air duct. However, the use of axial flow fans requires high manufacturing costs for the motor, and axial flow fans have problems such as short air supply distance and low air pressure. The use of mixed flow fans results in high fan speed, high noise and low efficiency.

[0098] As shown in FIG1 , the present application creatively provides a cabinet-type air-conditioning indoor unit, comprising a housing 1 and an air duct assembly. The housing 1 is enclosed to form a housing cavity 17, and an upper front air outlet 151 is formed at the upper portion of the housing 1, and a lower front air outlet 111 is formed at the lower portion of the housing 1. The air duct assembly is disposed within the housing cavity 17 and comprises an upper air duct 24, a power blade cavity, and a lower air duct 25, which are sequentially arranged from top to bottom. The upper air duct 24 communicates with the indoor room through the upper front air outlet 151, the lower air duct 25 communicates with the indoor room through the lower front air outlet 111, and the power blade cavity communicates with the housing cavity 17 through the blade cavity inlet. The upper air duct 24 can selectively communicate with the power blade cavity or the housing cavity 17; the lower air duct 25 can selectively communicate with the power blade cavity or the housing cavity 17.

[0099] The upper portion of the housing 1 is formed with an upper front air vent 151 and the lower portion of the housing 1 is formed with a lower front air vent 111, 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; when cooling, the upper air duct 24 is connected to the power fan chamber and the lower air duct 25 is connected to the housing chamber 17, and the cabinet air conditioner indoor unit is formed with an upper air outlet main flow path, and the 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; when heating, the upper air duct 24 and the housing chamber are connected. 17 is connected and the downwind duct 25 is connected to the power fan blade cavity, and the cabinet air conditioner indoor unit forms a downwind main flow path, and the indoor air can enter the downwind main flow path through the upper front air outlet 151 and be discharged through the lower front air outlet 111; the principle that cold air sinks during cooling and hot air floats during heating is fully utilized to form a large vortex in the room where the indoor unit is located, thereby increasing the temperature change rate of the indoor air, making the temperature distribution of the indoor air uniform and the flow rate stable, shortening the time required for the room where the indoor unit is located to reach the set temperature, and improving the air comfort.

[0100] Specifically, the shell 1 includes a shell top wall 15 and a shell front side wall 11, the shell top wall 15 is formed with an upper front air outlet 151, and the lower part of the shell front side wall 11 is formed with a lower front air outlet 111; the upper part of the upper air duct 24 is connected to the indoor environment through the upper front air outlet 151, and the lower part of the lower air duct 25 is connected to the indoor environment through the lower front air outlet 111; the lower part of the upper air duct 24 can be optionally connected to the power fan blade cavity or the shell cavity 17; the upper part of the lower air duct 25 can be optionally connected to the power fan blade cavity or the shell cavity 17.

[0101] To address the problem of insufficient air intake, this embodiment proposes that an upper rear air port 152 is further formed on the upper portion of the housing 1, the upper front air port 151 and the upper rear air port 152 are arranged opposite to each other front and back, and the upper rear air port 152 can be selectively opened or closed; a lower rear air port 141 is further formed on the lower portion of the housing 1, the lower front air port 111 and the lower rear air port 141 are arranged opposite to each other front and back, and the lower rear air port 141 can be selectively opened or closed; the upper portion of the housing cavity 17 is connected to the indoor room through the upper rear air port 152, and the lower portion of the housing cavity 17 is connected to the indoor room through the lower rear air port 141;

[0102] When the upper rear air vent 152 is closed and the lower rear air vent 141 is opened, the cabinet air conditioner indoor unit may form a lower auxiliary air inlet flow path assisted by the lower rear air vent 141;

[0103] When the upper rear air vent 152 is opened and the lower rear air vent 141 is closed, the cabinet air conditioner indoor unit may form an upper auxiliary air inlet flow path assisted by the upper rear air vent 152;

[0104] When both the upper rear air vent 152 and the lower rear air vent 141 are opened, the cabinet air conditioner indoor unit can form an upper and lower auxiliary air inlet flow path in which the upper rear air vent 152 and the lower rear air vent 141 simultaneously assist in the air intake;

[0105] 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 intake volume and reduce the air intake resistance; reduce the noise of the indoor unit and ensure that the air output volume and noise meet the requirements;

[0106] The combination of auxiliary air inlet flow path and main air flow path can achieve different air inlet and outlet modes, specifically:

[0107] By combining the upper auxiliary air inlet flow path and the upper main air outlet flow path, the cabinet air conditioner indoor unit can realize the first air inlet and outlet mode of simultaneously taking in air from the upper rear air outlet 152 and the lower front air outlet 111 and exhausting air from the upper front air outlet 151;

[0108] By combining the lower auxiliary air inlet flow path and the upper main air outlet flow path, the cabinet air conditioner indoor unit can realize a second air inlet and outlet mode in which air is simultaneously taken in by the lower rear air outlet 141 and the lower front air outlet 111 and air is discharged by the upper front air outlet 151;

[0109] By combining the upper and lower auxiliary air inlet flow paths with the upper main air outlet path, the cabinet air conditioner indoor unit can realize a third air inlet and outlet mode in which air is simultaneously taken in by the upper rear air outlet 152, the lower rear air outlet 141 and the lower front air outlet 111 and air is discharged by the upper front air outlet 151;

[0110] By combining the upper auxiliary air inlet flow path and the lower main air outlet flow path, the cabinet air conditioner indoor unit can realize a fourth air inlet and outlet mode in which air is simultaneously taken in by the upper rear air vent 152 and the upper front air vent 151 and air is discharged by the lower front air vent 111;

[0111] By combining the lower auxiliary air inlet flow path and the lower main air outlet flow path, the cabinet air conditioner indoor unit can realize the fifth air inlet and outlet mode of air intake from the lower rear air outlet 141 and the upper front air outlet 151 at the same time and air outlet from the lower front air outlet 111;

[0112] By combining the upper and lower auxiliary air inlet flow paths and the lower main air outlet path, the cabinet air conditioner indoor unit can realize the sixth air inlet and outlet mode in which air is simultaneously taken in by the upper rear air outlet 152, the lower rear air outlet 141 and the upper front air outlet 151 and air is discharged by the lower front air outlet 111.

[0113] Specifically, the shell top wall 15 is also formed with an upper rear air outlet 152; the shell 1 also includes a shell rear side wall 14, the shell front side wall 11 and the shell rear side wall 14 are arranged relative to each other front and back, and the shell front side wall 11 and the shell rear side wall 14 are both connected to the shell top wall 15; the lower part of the shell rear side wall 14 is formed with a lower rear air outlet 141.

[0114] Furthermore, when at least one of the upper rear air outlet 152 and the lower rear air outlet 141 is opened and the upper air duct 24 and the lower air duct 25 are both connected to the power fan blade cavity, the cabinet air-conditioning indoor unit can form an upper and lower simultaneous air outlet main flow path from the upper front air outlet 151 and the lower front air outlet 111.

[0115] In addition, the housing 1 includes a left side wall 12 of the housing, and the fan chamber inlet includes a left fan chamber inlet, which corresponds to the left side wall 12 of the housing. The air conditioner indoor unit also includes an indoor heat exchanger 4 disposed in the housing cavity 17, and a filter device is provided on the air inlet surface of the indoor heat exchanger 4 for filtering the air in the housing cavity 17. The indoor heat exchanger 4 includes a left heat exchanger, which is disposed between the left side wall 12 of the housing and the left fan chamber inlet.

[0116] The shell 1 also includes a right side wall 13 of the shell, and the fan chamber inlet includes a right fan chamber inlet, which corresponds to the right side wall 13 of the shell; the air conditioner indoor unit also includes an indoor heat exchanger 4, and the indoor heat exchanger 4 includes a right heat exchanger, which is arranged between the right side wall 13 of the shell and the right fan chamber inlet.

[0117] 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 toward the upper air duct 24, and the F1 heat exchange section 42 extends toward the lower air duct 25; the E1 heat exchange section 41 is disposed above the F1 heat exchange section 42 and satisfies the following conditions: 90°≤ɑ≤180°;

[0118] 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 toward the upper air duct 24, and the F2 heat exchange section 44 extends toward the lower air duct 25; the E2 heat exchange section 43 is disposed above the F2 heat exchange section 44 and satisfies the following conditions: 90°≤β≤180°;

[0119] Wherein, ɑ is the 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 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.

[0120] The front side wall 11, the left side wall 12, the rear side wall 14 and the right side wall 13 of the shell are connected in sequence to form a shell cavity 17; the shell 1 also includes a base 16, which is arranged at the bottom of the front side wall 11, the left side wall 12, the rear side wall 14 and the right side wall 13 of the shell, and the shell top wall 15 is arranged at the top of the front side wall 11, the left side wall 12, the rear side wall 14 and the right side wall 13 of the shell. The front side wall 11, the left side wall 12, the rear side wall 14 and the right side wall 13 of the shell are connected in sequence and form a shell cavity 17 with the shell top wall 15 and the base 16.

[0121] Example 1

[0122] As shown in Figures 2 to 5c, in this embodiment, there are two power blade chambers, which include an upper blade chamber 21 and a lower blade chamber 22. The upper air duct 24, the upper air blade chamber 21, the lower air blade chamber 22 and the lower air duct 25 are arranged in sequence from top to bottom; the lower part of the upper air duct 24 is formed with an A1 vent 241 and an A2 vent 242, and the A1 vent 241 is connected to the upper air duct 24 and the shell cavity 17; an upper air vane 214 is rotatably provided in the upper air blade chamber 21, and the upper air blade chamber 21 is formed with an upper air blade chamber inlet and an upper air blade chamber C1 outlet 211; the upper air blade chamber inlet is connected to the upper air blade chamber 21 and the shell cavity 17, and the upper air blade chamber C1 outlet 211 is connected to the A2 vent 242 A first upper wind shield structure 311 is rotatably provided between the A1 vent 241 and the A2 vent 242. The first upper wind shield structure 311 has a first working position and a second working position. When the first upper wind shield structure 311 is in the first working position, the first upper wind shield 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 connected to the shell cavity 17, and the upper air duct 24 is not connected to the upper wind blade cavity 21; when the first upper wind shield structure 311 is in the second working position, the first upper wind shield 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 connected to the shell cavity 17, and the upper air duct 24 is connected to the upper wind blade cavity 21;

[0123] The upper portion of the downwind duct 25 is formed with a B1 vent 251 and a B2 vent 252, and the B1 vent 251 is connected to the downwind duct 25 and the shell cavity 17; a downwind blade 224 is rotatably provided in the downwind blade cavity 22, and the downwind blade cavity 22 is formed with a downwind blade cavity inlet and a downwind blade cavity D1 outlet 221; the downwind blade cavity inlet is connected to the downwind blade cavity 22 and the shell cavity 17, and the downwind blade cavity D1 outlet 221 is connected to the B2 vent 252; a first downwind shielding structure 321 is rotatably provided between the B1 vent 251 and the B2 vent 252, and the first downwind shielding structure 321 has a third working position and a first working position. In the fourth working position, when the first lower wind shielding structure 321 is in the third working position, the first lower wind shielding structure 321 opens the B1 vent 251 and closes the B2 vent 252, so that the downwind duct 25 is connected to the shell cavity 17 and the downwind duct 25 is not connected to the downwind blade cavity 22; when the first lower wind shielding structure 321 is in the fourth working position, the first lower wind shielding structure 321 closes the B1 vent 251 and opens the B2 vent 252, so that the downwind duct 25 is not connected to the shell cavity 17 and the downwind duct 25 is connected to the downwind blade cavity 22; preferably, the first upper wind shielding structure 311 and the first lower wind shielding structure 321 are both baffles;

[0124] When the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the upper wind blades 214 rotate and the lower wind blades 224 do not rotate, and the indoor air can flow through the upper air outlet main channel;

[0125] When the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the upper blades 214 do not rotate and the lower blades 224 rotate, and the indoor air can flow through the lower air outlet main channel.

[0126] Specifically, there are four types of top air outlet modes:

[0127] ① When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, and the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the upper air blade 214 rotates, and the indoor air near the lower rear air vent 141 enters the shell 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151;

[0128] ② When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the upper air blade 214 rotates, and the indoor air near the upper rear air vent 152 enters the shell 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151;

[0129] ③ When both the upper rear air vent 152 and the lower rear air vent 141 are open, and the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the third working position, the upper air blade 214 rotates, and the indoor air near the upper rear air vent 152 enters the shell cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the shell 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151;

[0130] ④ When the upper rear air outlet 152 and the lower rear air outlet 141 are both closed, and the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the upper air blade 214 rotates, and 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air outlet 151;

[0131] The above four upper air outlet methods can meet different cooling needs.

[0132] There are four types of downwind airflow modes:

[0133] ① When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and the first upper wind shield structure 311 is in the first working position and the first lower wind shield structure 321 is in the fourth working position, the lower air blades 224 rotate, and the indoor air near the upper rear air vent 152 enters the shell 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 shell cavity 17 through the A1 vent 241; the air in the shell cavity 17 then enters the lower air blade cavity 22 through the lower air blade cavity inlet, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111;

[0134] ② When the upper rear air vent 152 is closed and the lower rear air vent 141 is open, and the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the lower air blades 224 rotate, and the indoor air near the lower rear air vent 141 enters the shell 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 shell cavity 17 through the A1 vent 241; the air in the shell cavity 17 then enters the lower air blade cavity 22 through the lower air blade cavity inlet, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111;

[0135] ③ When both the upper rear air vent 152 and the lower rear air vent 141 are open, and the first upper wind shield structure 311 is in the first working position and the first lower wind shield structure 321 is in the fourth working position, the lower air blade 224 rotates, and the indoor air near the upper rear air vent 152 enters the shell cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the shell 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 shell cavity 17 through the A1 vent 241; the air in the shell cavity 17 then enters the lower air blade cavity 22 through the lower air blade cavity inlet, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111;

[0136] ④ When both the upper rear air vent 152 and the lower rear air vent 141 are closed, and the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the lower air blade 224 rotates, and 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; the air in the housing cavity 17 then enters the lower air blade cavity 22 through the lower air blade cavity inlet, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111;

[0137] The above four downward air outlet methods can meet different heating needs.

[0138] There are three ways to output air simultaneously from top to bottom:

[0139] ① When both the upper rear air vent 152 and the lower rear air vent 141 are open, and the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the fourth working position, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the upper rear air vent 152 enters the shell cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the shell cavity 17 through the lower rear air vent 141; a portion of the air in the shell cavity 17 enters the upper air blade cavity 21 through the upper air 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 portion of the air in the shell cavity 17 enters the lower air blade cavity 22 through the lower air 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] ② When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the fourth working position, the upper air blades 214 and the lower air blades 224 are both rotated, and the indoor air near the upper rear air vent 152 enters the shell cavity 17 through the upper rear air vent 152; a portion of the air in the shell cavity 17 enters the upper air blade cavity 21 through the upper air 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 portion of the air in the shell cavity 17 enters the lower air blade cavity 22 through the lower air 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;

[0141] ③ When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, and the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the fourth working position, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air close to the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; a part of the air in the shell cavity 17 enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air outlet 151; another part of the air in the shell cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air outlet 111.

[0142] A1 vents 241 are formed on the lower sidewall of the upper duct 24 , and A2 vents 242 are formed at the lower end of the upper duct 24 ; B1 vents 251 are formed on the upper sidewall of the lower duct 25 , and B2 vents 252 are formed at the upper end of the lower duct 25 .

[0143] Example 2

[0144] As shown in Figures 6 to 9c, in this embodiment, there is one power blade cavity and the power blade cavity is the middle blade cavity 23. The upper air duct 24, the middle air blade cavity 23 and the lower air duct 25 are arranged in sequence from top to bottom; the lower part of the upper air duct 24 is formed with an A1 vent 241 and an A2 vent 242, and the A1 vent 241 connects the upper air duct 24 and the shell cavity 17; the upper part of the lower air duct 25 is formed with a B1 vent 251 and a B2 vent 252, and the B1 vent The opening 251 connects the lower air duct 25 and the housing cavity 17; an intermediate blade 233 is rotatably provided in the intermediate blade cavity 23, and the intermediate blade cavity 23 is formed with an intermediate blade cavity inlet, an intermediate blade cavity upper outlet 231, and an intermediate blade cavity lower outlet 232; the intermediate blade cavity 23 inlet connects the intermediate blade cavity 23 and the housing cavity 17, the intermediate blade cavity upper outlet 231 is connected to the A2 vent 242, and the intermediate blade cavity lower outlet 232 is connected to the B2 vent 252;

[0145] A first upper wind shielding structure 311 is rotatably provided between the A1 vent 241 and the A2 vent 242. The first upper wind shielding structure 311 has a first working position and a second working position. When the first upper wind shielding structure 311 is in the first working position, the first upper wind shielding 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 connected to the shell cavity 17 and the upper air duct 24 is not connected to the power blade cavity; when the first upper wind shielding structure 311 is in the second working position, the first upper wind shielding 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 connected to the shell cavity 17 and the upper air duct 24 is connected to the power blade cavity;

[0146] A first lower wind shielding structure 321 is rotatably provided between the B1 vent 251 and the B2 vent 252. The first lower wind shielding structure 321 has a third working position and a fourth working position. When the first lower wind shielding structure 321 is in the third working position, the first lower wind shielding structure 321 opens the B1 vent 251 and closes the B2 vent 252, so that the downwind duct 25 is connected to the shell cavity 17 and the downwind duct 25 is not connected to the power blade cavity; when the first lower wind shielding structure 321 is in the fourth working position, the first lower wind shielding structure 321 closes the B1 vent 251 and opens the B2 vent 252, so that the downwind duct 25 is not connected to the shell cavity 17 and the downwind duct 25 is connected to the power blade cavity;

[0147] When the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the middle fan blade 233 rotates, and the indoor air can flow through the upper air outlet main channel;

[0148] When the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the middle fan blade 233 rotates, and the indoor air can flow through the lower air outlet main channel;

[0149] Furthermore, a second upper wind shield structure 312 and a second lower wind shield structure 322 are rotatably provided in the middle fan chamber 23; the second upper wind shield structure 312 is close to the middle fan chamber upper outlet 231, and the second lower wind shield structure 322 is close to the middle fan chamber upper and lower outlets 232; the second upper wind shield structure 312 and the second lower wind shield structure 322 are both adapted to the contour of the middle fan chamber 23; preferably, the second upper wind shield structure 312 and the second lower wind shield structure 322 are both baffles;

[0150] When the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the second lower wind shielding structure 322 cooperates with the first lower wind shielding structure 321 to guide the air in the middle blade cavity 23 to the upper air duct 24;

[0151] When the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the second upper wind shielding structure 312 cooperates with the first upper wind shielding structure 311 to guide the air in the middle blade cavity 23 to the lower air duct 25 .

[0152] Specifically, there are four types of top air outlet modes:

[0153] ① When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is open, and the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the intermediate fan blade 233 rotates, and the indoor air near the lower rear air outlet 141 enters the shell 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air outlet 151;

[0154] ② When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the third working position, the intermediate fan blade 233 rotates, and the indoor air near the upper rear air vent 152 enters the shell 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151;

[0155] ③ When both the upper rear air vent 152 and the lower rear air vent 141 are open, and the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the third working position, the intermediate fan blade 233 rotates, and the indoor air near the upper rear air vent 152 enters the shell cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the shell 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air vent 151;

[0156] ④ When the upper rear air outlet 152 and the lower rear air outlet 141 are both closed, and the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the intermediate fan blade 233 rotates, and 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 shell cavity 17 through the B1 vent 251; the air in the shell cavity 17 then enters the intermediate fan cavity 23 through the inlet of the intermediate fan cavity 23, and then enters the upper air duct 24 through the A2 vent 242, and is discharged through the upper front air outlet 151;

[0157] The above four upper air outlet methods can meet different cooling needs.

[0158] There are four types of downwind airflow modes:

[0159] ① When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and the first upper wind shield structure 311 is in the first working position and the first lower wind shield structure 321 is in the fourth working position, the intermediate fan blade 233 rotates, and the indoor air near the upper rear air vent 152 enters the shell 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 shell cavity 17 through the A1 vent 241; the air in the shell cavity 17 then enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111;

[0160] ② When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is open, and the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the intermediate fan blade 233 rotates, and the indoor air near the lower rear air outlet 141 enters the shell 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 shell cavity 17 through the A1 vent 241; the air in the shell cavity 17 then enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air outlet 111;

[0161] ③ When both the upper rear air vent 152 and the lower rear air vent 141 are open, and the first upper wind shield structure 311 is in the first working position and the first lower wind shield structure 321 is in the fourth working position, the intermediate fan blade 233 rotates, and the indoor air near the upper rear air vent 152 enters the shell cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the shell 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 shell cavity 17 through the A1 vent 241; the air in the shell cavity 17 then enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111;

[0162] ④ When both the upper rear air vent 152 and the lower rear air vent 141 are closed, and the first upper wind shield structure 311 is in the first working position and the first lower wind shield structure 321 is in the fourth working position, the intermediate fan blade 233 rotates, and 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; the air in the housing cavity 17 then enters the intermediate fan cavity 23 through the inlet of the intermediate fan cavity 23, and then enters the lower air duct 25 through the B2 vent 252, and is discharged through the lower front air vent 111;

[0163] The above four downward air outlet methods can meet different heating needs.

[0164] There are three ways to output air simultaneously from top to bottom:

[0165] ① When both the upper rear air vent 152 and the lower rear air vent 141 are open, and the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the fourth working position, the intermediate fan blade 233 rotates, and the indoor air near the upper rear air vent 152 enters the shell cavity 17 through the upper rear air vent 152, and the indoor air near the lower rear air vent 141 enters the shell cavity 17 through the lower rear air vent 141; the air in the shell cavity 17 enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23, and a portion of the air enters the upper air duct 24 through the A2 vent 242 and is discharged through the upper front air vent 151; the other portion of the air enters the lower air duct 25 through the B2 vent 252 and is discharged through the lower front air vent 111;

[0166] ② When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, and the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the fourth working position, the intermediate fan blade 233 rotates, and the indoor air near the upper rear air vent 152 enters the housing cavity 17 through the upper rear air vent 152; the air in the housing cavity 17 enters the intermediate fan blade cavity 23 through the inlet of the intermediate fan blade cavity 23. Part of the air enters the upper air duct 24 through the A2 vent 242 and is discharged through the upper front air vent 151; the other part of the air enters the lower air duct 25 through the B2 vent 252 and is discharged through the lower front air vent 111;

[0167] ③ When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, and the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the fourth working position, the middle fan blade 233 rotates, and the indoor air near the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; the air in the shell cavity 17 enters the middle fan blade cavity 23 through the inlet of the middle fan blade cavity 23, and part of the air enters the upper air duct 24 through the A2 vent 242 and is discharged through the upper front air outlet 151; the other part of the air enters the lower air duct 25 through the B2 vent 252 and is discharged through the lower front air outlet 111.

[0168] A1 vents 241 are formed on the lower sidewall of the upper duct 24 , and A2 vents 242 are formed at the lower end of the upper duct 24 ; B1 vents 251 are formed on the upper sidewall of the lower duct 25 , and B2 vents 252 are formed at the upper end of the lower duct 25 .

[0169] Example 3

[0170] As shown in Figures 10 to 13c, in this embodiment, an A1 vent 241 and an A2 vent 242 are formed at the lower portion of the upper air duct 24; two power blade cavities are provided, and the two power blade cavities include an upper blade cavity 21 and a lower blade cavity 22 arranged sequentially from top to bottom; an upper blade 214 is rotatably provided in the upper blade cavity 21, and the upper blade cavity 21 is formed with an upper blade cavity inlet, an upper blade cavity C1 outlet 211, an upper blade cavity C2 outlet 212, and an upper blade cavity C3 outlet 213; the upper blade cavity inlet communicates with the upper blade cavity 21 and the housing cavity 17, and the upper blade cavity C1 outlet 211 communicates with the A2 vent 242;

[0171] A first upper wind shielding structure 311 is rotatably provided between the A1 vent 241 and the A2 vent 242. The first upper wind shielding structure 311 has a first working position and a second working position. When the first upper wind shielding structure 311 is in the first working position, the first upper wind shielding structure 311 opens the A1 vent 241 and closes the A2 vent 242, so that the upper air duct 24 is connected to the shell cavity 17, and the upper air duct 24 is not connected to the upper wind blade cavity 21. When the first upper wind shielding structure 311 is in the second working position, the first upper wind shielding structure 311 closes the A1 vent 241 and opens the A2 vent 242, so that the upper air duct 24 is not connected to the shell cavity 17, and the upper air duct 24 is connected to the upper wind blade cavity 21.

[0172] A B1 vent 251 and a B2 vent 252 are formed at the upper portion of the downwind duct 25; a downwind vane 224 is rotatably provided in the downwind blade chamber 22, and the downwind blade chamber 22 is formed with a downwind blade chamber inlet, a downwind blade chamber D1 outlet 221, a downwind blade chamber D2 outlet 222, and a downwind blade chamber D3 outlet 223; the downwind blade chamber inlet communicates with the downwind blade chamber 22 and the housing chamber 17, and the downwind blade chamber D1 outlet 221 communicates with the B2 vent 252;

[0173] A first lower wind shield structure 321 is rotatably provided between the B1 vent 251 and the B2 vent 252. The first lower wind shield structure 321 has a third working position and a fourth working position. When the first lower wind shield structure 321 is in the third working position, the first lower wind shield structure 321 opens the B1 vent 251 and closes the B2 vent 252 at the same time, so that the downwind duct 25 is connected to the shell cavity 17, and the downwind duct 25 is not connected to the downwind blade cavity 22; when the first lower wind shield structure 321 is in the fourth working position, the first lower wind shield structure 321 closes the B1 vent 251 and opens the B2 vent 252 at the same time, so that the downwind duct 25 is not connected to the shell cavity 17, and the downwind duct 25 is connected to the power blade cavity.

[0174] Furthermore, 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 arranged in sequence from top to bottom; the upper auxiliary air duct 261 connects the upper front air outlet 151 and the upper air blade chamber C2 outlet 212, the lower auxiliary air duct 263 connects the lower front air outlet 111 and the lower air blade chamber D2 outlet 222, and the middle auxiliary air duct 262 connects the upper air blade chamber C3 outlet 213 and the lower air blade chamber D3 outlet 223;

[0175] The upper air blade chamber C2 outlet 212 is rotatably provided with a third upper wind shielding structure 313, and the third upper wind shielding structure 313 can open or close the upper air blade chamber C2 outlet 212; when the upper air blade chamber C2 outlet 212 is open, the upper air blade chamber 21 and the upper auxiliary air duct 261 are connected, and when the upper air blade chamber C2 outlet 212 is closed, the upper air blade chamber 21 and the upper auxiliary air duct 261 are not connected; the lower air blade chamber D2 outlet 222 is rotatably provided with a third lower wind shielding structure 323, and the third lower wind shielding structure 323 can open or close the lower air blade chamber D2 outlet 222; when the lower air blade chamber D2 outlet 222 is open, the lower air blade chamber 22 and the lower auxiliary air duct 263 are connected, and when the lower air blade chamber D2 outlet 222 is closed, the lower air blade chamber 22 and the lower auxiliary air duct 263 are not connected;

[0176] When the third upper wind shielding structure 313 opens the upper air blade cavity C2 outlet 212 and the third lower wind shielding structure 323 closes the lower air blade cavity D2 outlet 222, 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 are connected to form an upper air outlet main flow path;

[0177] When the third upper wind shielding structure 313 closes the upper air blade cavity C2 outlet 212 and the third lower wind shielding structure 323 opens the lower air blade cavity D2 outlet 222, 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 are connected to form a lower air outlet main flow path;

[0178] When the third upper wind shield structure 313 closes the upper wind blade chamber C2 outlet 212, and the third lower wind shield structure 323 closes the lower wind blade chamber D2 outlet 222, the upper wind blade chamber 21 and the upper air duct 24 and the lower wind blade chamber 22 and the lower air duct 25 form upper and lower main air outlet paths at the same time; preferably, the third upper wind shield structure 313 and the third lower wind shield structure 323 are both baffles.

[0179] Specifically, there are four types of top air outlet modes:

[0180] ① When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the third upper wind shielding structure 313 opens the upper air blade chamber C2 outlet 212 and the third lower wind shielding structure 323 closes the lower air blade chamber D2 outlet 222, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the lower rear air outlet 141 enters the shell 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 passes through the B1 passage. The air outlet 251 enters the housing cavity 17; a portion of the air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the middle auxiliary air duct 262 through the lower blade cavity D2 outlet 222, and then enters the upper blade cavity 21; another portion of the air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet; a portion of the air in the upper blade cavity 21 is discharged through the A2 vent 242, the upper air duct 24, and the upper front air outlet 151; another portion of the air in the upper blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary air duct 261, and the upper front air outlet 151.

[0181] ② When the upper rear air outlet 152 is opened and the lower rear air outlet 141 is closed, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the third upper wind shielding structure 313 opens the upper air blade chamber C2 outlet 212 and the third lower wind shielding structure 323 closes the lower air blade chamber D2 outlet 222, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the upper rear air outlet 152 enters the shell 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 passes through the B1 passage. The air outlet 251 enters the housing cavity 17; a portion of the air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the middle auxiliary air duct 262 through the lower blade cavity D2 outlet 222, and then enters the upper blade cavity 21; another portion of the air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet; a portion of the air in the upper blade cavity 21 is discharged through the A2 vent 242, the upper air duct 24, and the upper front air outlet 151; another portion of the air in the upper blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary air duct 261, and the upper front air outlet 151.

[0182] ③ When the upper rear air outlet 152 and the lower rear air outlet 141 are both opened, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the third upper wind shielding structure 313 opens the upper air blade chamber C2 outlet 212 and the third lower wind shielding structure 323 closes the lower air blade chamber D2 outlet 222, the upper air blades 214 and the lower air blades 224 are both rotated, and the indoor air near the upper rear air outlet 152 enters the shell cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; the indoor air near the lower front air outlet 111 enters the shell cavity 17 through the lower front air outlet 1 11 enters the downwind duct 25, and then enters the housing cavity 17 through the B1 vent 251; a portion of the air in the housing cavity 17 enters the downwind blade cavity 22 through the downwind blade cavity inlet, and then enters the middle auxiliary duct 262 through the downwind blade cavity D2 outlet 222, and enters the upwind blade cavity 21; another portion of the air in the housing cavity 17 enters the upwind blade cavity 21 through the upwind blade cavity inlet; a portion of the air in the upwind blade cavity 21 is discharged through the A2 vent 242, the upwind duct 24, and the upper front vent 151; another portion of the air in the upwind blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary duct 261, and the upper front vent 151.

[0183] ④ When the upper rear air outlet 152 and the lower rear air outlet 141 are both closed, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, the third upper wind shielding structure 313 opens the upper wind blade cavity C2 outlet 212 and the third lower wind shielding structure 323 closes the lower wind blade cavity D2 outlet 222, the upper wind blades 214 and the lower wind blades 224 are both rotated, and the indoor air near the lower front air outlet 111 enters the downwind duct 25 through the lower front air outlet 111 and then enters the housing cavity 17 through the B1 vent 251; A portion of the air in the cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet, then enters the middle auxiliary air duct 262 through the lower blade cavity D2 outlet 222, and finally enters the upper blade cavity 21. Another portion of the air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet. A portion of the air in the upper blade cavity 21 is discharged through the A2 vent 242, the upper air duct 24, and the upper front air vent 151. Another portion of the air in the upper blade cavity 21 is discharged through the upper blade cavity C2 outlet 212, the upper auxiliary air duct 261, and the upper front air vent 151.

[0184] The above four upper air outlet methods can meet different cooling needs.

[0185] There are four types of downwind airflow modes:

[0186] ① When the upper rear air outlet 152 is opened and the lower rear air outlet 141 is closed, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the third upper wind shielding structure 313 closes the upper air blade chamber C2 outlet 212 and the third lower wind shielding structure 323 opens the lower air blade chamber D2 outlet 222, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the upper rear air outlet 152 enters the shell 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 passes through the A1 passage. The air outlet 241 enters the housing cavity 17; a portion of the air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the middle auxiliary air duct 262 through the upper blade cavity C2 outlet 212, and then enters the lower blade cavity 22; another portion of the air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet; a portion of the air in the lower blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25, and the lower front air outlet 111; another portion of the air in the lower blade cavity 22 is discharged through the lower blade cavity D2 outlet 222, the lower auxiliary air duct 263, and the lower front air outlet 111.

[0187] ② When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the third upper wind shielding structure 313 closes the upper air blade chamber C2 outlet 212 and the third lower wind shielding structure 323 opens the lower air blade chamber D2 outlet 222, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the lower rear air outlet 141 enters the shell 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 passes through the A1 passage. The air outlet 241 enters the housing cavity 17; a portion of the air in the housing cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the middle auxiliary air duct 262 through the upper blade cavity C2 outlet 212, and then enters the lower blade cavity 22; another portion of the air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet; a portion of the air in the lower blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25, and the lower front air outlet 111; another portion of the air in the lower blade cavity 22 is discharged through the lower blade cavity D2 outlet 222, the lower auxiliary air duct 263, and the lower front air outlet 111.

[0188] ③ When the upper rear air outlet 152 and the lower rear air outlet 141 are both opened, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the third upper wind shielding structure 313 closes the upper air blade chamber C2 outlet 212 and the third lower wind shielding structure 323 opens the lower air blade chamber D2 outlet 222, the upper air blades 214 and the lower air blades 224 are both rotated, and the indoor air near the upper rear air outlet 152 enters the shell cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; the indoor air near the upper front air outlet 151 enters the shell cavity 17 through the upper front air outlet 1 51 enters the upper air duct 24, and then enters the housing cavity 17 through the A1 vent 241; a portion of the air in the housing cavity 17 enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then enters the middle auxiliary air duct 262 through the upper air blade cavity C2 outlet 212, and enters the lower air blade cavity 22; another portion of the air in the housing cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet; a portion of the air in the lower air blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25, and the lower front air outlet 111; another portion of the air in the lower air blade cavity 22 is discharged through the lower air blade cavity D2 outlet 222, the lower auxiliary air duct 263, and the lower front air outlet 111.

[0189] ④ When the upper rear air outlet 152 and the lower rear air outlet 141 are both closed, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, the third upper wind shielding structure 313 closes the upper wind blade chamber C2 outlet 212 and the third lower wind shielding structure 323 opens the lower wind blade chamber D2 outlet 222, the upper wind blades 214 and the lower wind blades 224 are both rotated, and 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 portion of the air in the cavity 17 then enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the middle auxiliary air duct 262 through the upper blade cavity C2 outlet 212, and finally enters the lower blade cavity 22. Another portion of the air in the housing cavity 17 then enters the lower blade cavity 22 through the lower blade cavity inlet. A portion of the air in the lower blade cavity 22 is discharged through the B2 vent 252, the lower air duct 25, and the lower front air vent 111. Another portion of the air in the lower blade cavity 22 is discharged through the lower blade cavity D2 outlet 222, the lower auxiliary air duct 263, and the lower front air vent 111.

[0190] The above four downward air outlet methods can meet different heating needs.

[0191] There are three ways to output air simultaneously from top to bottom:

[0192] ① When the upper rear air vent 152 and the lower rear air vent 141 are both open, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the fourth working position, the third upper wind shielding structure 313 closes the upper air blade chamber C2 outlet 212, and the third lower wind shielding structure 323 closes the lower air blade chamber D2 outlet 222, the upper air blade 214 and the lower air blade 224 are both 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 upper rear air vent 152. 1 enters the housing cavity 17 through the lower rear air outlet 141; a portion of the air in the housing cavity 17 enters the upper air blade cavity 21 through the upper air blade cavity inlet, then enters the upper air duct 24 through the upper air blade cavity C1 outlet 211 and the A2 vent 242, and is discharged through the upper front air outlet 151; another portion of the air in the housing cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet, then enters the lower air duct 25 through the lower air blade cavity D1 outlet 221 and the B2 vent 252, and is discharged through the lower front air outlet 111.

[0193] ② When the upper rear air outlet 152 is opened and the lower rear air outlet 141 is closed, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the fourth working position, the third upper wind shielding structure 313 closes the upper air blade chamber C2 outlet 212, and the third lower wind shielding structure 323 closes the lower air blade chamber D2 outlet 222, the upper air blades 214 and the lower air blades 224 rotate, and the indoor air near the upper rear air outlet 152 enters through the upper rear air outlet 152. The air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper duct 24 through the upper blade cavity C1 outlet 211 and the A2 vent 242, and is discharged through the upper front 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 duct 25 through the lower blade cavity D1 outlet 221 and the B2 vent 252, and is discharged through the lower front vent 111.

[0194] ③ When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the fourth working position, the third upper wind shielding structure 313 closes the upper air blade chamber C2 outlet 212, and the third lower wind shielding structure 323 closes the lower air blade chamber D2 outlet 222, so that the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the lower rear air outlet 141 enters through the upper rear air outlet 152. The air in the housing cavity 17 enters the upper blade cavity 21 through the upper blade cavity inlet, then enters the upper duct 24 through the upper blade cavity C1 outlet 211 and the A2 vent 242, and is discharged through the upper front air outlet 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 duct 25 through the lower blade cavity D1 outlet 221 and the B2 vent 252, and is discharged through the lower front air outlet 111.

[0195] A1 vents 241 are formed on the lower sidewall of the upper duct 24 , and A2 vents 242 are formed at the lower end of the upper duct 24 ; B1 vents 251 are formed on the upper sidewall of the lower duct 25 , and B2 vents 252 are formed at the upper end of the lower duct 25 .

[0196] Example 4

[0197] As shown in Figures 14a to 25b, an A1 vent 241 and an A2 vent 242 are formed at the lower portion of the upper air duct 24; two power air blade cavities are provided, and the two power air blade cavities include an upper air blade cavity 21 and a lower air blade cavity 22 arranged in sequence from top to bottom; an upper air blade 214 is rotatably provided in the upper air blade cavity 21, and the upper air blade cavity 21 is formed with an upper air blade cavity inlet, an upper air blade cavity C1 outlet 211 and an upper air blade cavity C3 outlet 213; the upper air blade cavity inlet communicates with the upper air blade cavity 21 and the housing cavity 17, the upper air blade cavity C1 outlet 211 is communicated with the A2 vent 242, and a lower auxiliary air duct 272 is formed between the upper air blade cavity C3 outlet 213 and the lower front air outlet 111; a fourth upper wind shielding structure 314 is rotatably provided at the upper air blade cavity C3 outlet 213, and the fourth upper wind shielding structure 314 can open or close the upper air blade cavity C3 outlet 213;

[0198] A first upper wind shielding structure 311 is rotatably provided between the A1 vent 241 and the A2 vent 242. The first upper wind shielding structure 311 has a first working position and a second working position. When the first upper wind shielding structure 311 is in the first working position, the first upper wind shielding structure 311 opens the A1 vent 241 and closes the A2 vent 242, so that the upper air duct 24 is connected to the shell cavity 17 and the upper air duct 24 is not connected to the upper wind blade cavity 21; when the first upper wind shielding structure 311 is in the second working position, the first upper wind shielding structure 311 closes the A1 vent 241 and opens the A2 vent 242, so that the upper air duct 24 is not connected to the shell cavity 17 and the upper air duct 24 is connected to the upper wind blade cavity 21;

[0199] A B1 vent 251 and a B2 vent 252 are formed at the upper portion of the downwind duct 25; a downwind blade 224 is rotatably provided in the downwind blade cavity 22, and the downwind blade cavity 22 is formed with a downwind blade cavity inlet, a downwind blade cavity D3 outlet 223, and a downwind blade cavity D1 outlet 221; the downwind blade cavity inlet communicates with the downwind blade cavity 22 and the housing cavity 17, the downwind blade cavity D1 outlet 221 communicates with the B2 vent 252, and an upper auxiliary air duct 271 is formed between the downwind blade cavity D3 outlet 223 and the upper front air outlet 151; a fourth lower wind shielding structure 324 is rotatably provided at the downwind blade cavity D3 outlet 223, and the fourth lower wind shielding structure 324 can open or close the downwind blade cavity D3 outlet 223; preferably, the fourth upper wind shielding structure 314 and the fourth lower wind shielding structure 324 are both baffles;

[0200] A first lower wind shield structure 321 is rotatably provided between the B1 vent 251 and the B2 vent 252. The first lower wind shield structure 321 has a third working position and a fourth working position. When the first lower wind shield structure 321 is in the third working position, the first lower wind shield structure 321 opens the B1 vent 251 and closes the B2 vent 252 at the same time, so that the downwind duct 25 is connected to the shell cavity 17 and the downwind duct 25 is not connected to the downwind blade cavity 22; when the first lower wind shield structure 321 is in the fourth working position, the first lower wind shield structure 321 closes the B1 vent 251 and opens the B2 vent 252 at the same time, so that the downwind duct 25 is not connected to the shell cavity 17 and the downwind duct 25 is connected to the downwind blade cavity 22.

[0201] Furthermore, when the first upper wind shielding structure 311 is in the second working position, the first lower wind shielding structure 321 is in the third working position, the upper wind blade chamber C3 outlet 213 is closed, and the lower wind blade chamber D3 outlet 223 is opened, the lower air duct 25, the upper wind blade chamber 21, and the upper air duct 24 are sequentially connected to form an upper air outlet main flow path, and the lower air duct 25, the lower wind blade chamber 22, and the upper auxiliary air duct 271 are sequentially connected to form an upper air outlet auxiliary flow path;

[0202] When the first upper wind shield structure 311 is in the first working position, the first lower wind shield structure 321 is in the fourth working position, the upper wind blade chamber C3 outlet 213 is open and the lower wind blade chamber D3 outlet 223 is closed, the upper air duct 24, the lower wind blade chamber 22 and the lower air duct 25 are connected in sequence to form the lower air outlet main flow path, and the upper air duct 24, the upper wind blade chamber 21 and the lower auxiliary air duct 272 are connected in sequence to form the lower air outlet auxiliary flow path.

[0203] Specifically, there are four types of top air outlet modes:

[0204] ① When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, and the upper air blade chamber C3 outlet 213 is closed and the lower air blade chamber D3 outlet 223 is opened, the upper air blades 214 and the lower air blades 224 are rotated, 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 The indoor air enters the downwind duct 25 through the downwind front air outlet 111, and then enters the housing cavity 17 through the B1 vent 251; a portion of the air in the housing cavity 17 enters the downwind blade cavity 22 through the downwind blade cavity inlet, and then is discharged through the downwind blade cavity D3 outlet 223, the upper auxiliary air duct 271, and the upwind front air outlet 151; another portion of the air in the housing cavity 17 enters the upwind blade cavity 21 through the upwind blade cavity inlet, and then is discharged through the upwind blade cavity C1 outlet 211, the upwind duct 24, and the upwind front air outlet 151.

[0205] ② When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, and the upper air blade chamber C3 outlet 213 is closed and the lower air blade chamber D3 outlet 223 is open, the upper air blade 214 and the lower air blade 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 lower front air vent 111 enters the housing cavity 17 through the lower front air vent 111. The front air outlet 111 enters the downwind duct 25 and then enters the housing cavity 17 through the B1 vent 251. A portion of the air in the housing cavity 17 enters the downwind blade cavity 22 through the downwind blade cavity inlet and is then discharged through the downwind blade cavity D3 outlet 223, the upper auxiliary air duct 271, and the upper front air outlet 151. Another portion of the air in the housing cavity 17 enters the upwind blade cavity 21 through the upwind blade cavity inlet and is then discharged through the upwind blade cavity C1 outlet 211, the upper air duct 24, and the upper front air outlet 151.

[0206] ③ When the upper rear air outlet 152 and the lower rear air outlet 141 are both open, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, and the upper air blade chamber C3 outlet 213 is closed and the lower air blade chamber D3 outlet 223 is open, the upper air blades 214 and the lower air blades 224 are both rotated, and the indoor air near the upper rear air outlet 152 enters the shell cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; Indoor air from 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 vent 251. A portion of the air in the housing cavity 17 then enters the lower air vane cavity 22 through the lower air vane cavity inlet and is then discharged through the lower air vane cavity D3 outlet 223, the upper auxiliary air duct 271, and the upper front air outlet 151. Another portion of the air in the housing cavity 17 enters the upper air vane cavity 21 through the upper air vane cavity inlet and then is discharged through the upper air vane cavity C1 outlet 211, the upper air duct 24, and the upper front air outlet 151.

[0207] ④ When the upper rear air outlet 152 and the lower rear air outlet 141 are both closed, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the third working position, and the upper air blade chamber C3 outlet 213 is closed and the lower air blade chamber D3 outlet 223 is open, the upper air blades 214 and the lower air blades 224 are both rotated, and the indoor air near the lower front air outlet 111 enters the downwind duct 25 through the lower front air outlet 111, and then enters the shell cavity 17 through the B1 vent 251; a portion of the air in the shell cavity 17 then enters the downwind blade cavity 22 through the downwind blade cavity inlet, and then is discharged through the downwind blade cavity D3 outlet 223, the upper auxiliary air duct 271 and the upper front air outlet 151; another portion of the air in the shell cavity 17 enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then is discharged through the upper air blade cavity C1 outlet 211, the upper air duct 24 and the upper front air outlet 151;

[0208] The above four upper air outlet methods can meet different cooling needs.

[0209] There are four types of downwind airflow modes:

[0210] ① When the upper rear air vent 152 is open and the lower rear air vent 141 is closed, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, and the upper air blade chamber C3 outlet 213 is open and the lower air blade chamber D3 outlet 223 is closed, the upper air blade 214 and the lower air blade 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 housing cavity 17 through the upper front air vent 151. The front air outlet 151 enters the upper air duct 24 and then enters the housing cavity 17 through the A1 vent 241. A portion of the air in the housing cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet and is then discharged through the upper air blade cavity C3 outlet 213, the lower auxiliary air duct 272, and the lower front air outlet 111. Another portion of the air in the housing cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet and is then discharged through the lower air blade cavity D1 outlet 221, the lower air duct 25, and the lower front air outlet 111.

[0211] ② When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, and the upper air blade chamber C3 outlet 213 is opened and the lower air blade chamber D3 outlet 223 is closed, the upper air blades 214 and the lower air blades 224 are rotated, 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 housing cavity 17 through the upper front air outlet 151. The front air outlet 151 enters the upper air duct 24 and then enters the housing cavity 17 through the A1 vent 241. A portion of the air in the housing cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet and is then discharged through the upper air blade cavity C3 outlet 213, the lower auxiliary air duct 272, and the lower front air outlet 111. Another portion of the air in the housing cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet and is then discharged through the lower air blade cavity D1 outlet 221, the lower air duct 25, and the lower front air outlet 111.

[0212] ③ When the upper rear air outlet 152 and the lower rear air outlet 141 are both open, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, and the upper air blade chamber C3 outlet 213 is open and the lower air blade chamber D3 outlet 223 is closed, the upper air blades 214 and the lower air blades 224 are both rotated, and the indoor air near the upper rear air outlet 152 enters the shell cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; Indoor air from 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 portion of the air in the housing cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet and is then discharged through the upper air blade cavity C3 outlet 213, the lower auxiliary air duct 272, and the lower front air outlet 111. Another portion of the air in the housing cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet and is then discharged through the lower air blade cavity D1 outlet 221, the lower air duct 25, and the lower front air outlet 111.

[0213] ④ When the upper rear air outlet 152 and the lower rear air outlet 141 are both closed, the first upper wind shielding structure 311 is in the first working position and the first lower wind shielding structure 321 is in the fourth working position, and the upper air blade chamber C3 outlet 213 is opened and the lower air blade chamber D3 outlet 223 is closed, the upper air blades 214 and the lower air blades 224 are both rotated, and 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 shell cavity 17 through the A1 vent 241; a portion of the air in the shell cavity 17 then enters the upper air blade cavity 21 through the upper air blade cavity inlet, and then is discharged through the upper air blade cavity C3 outlet 213, the lower auxiliary air duct 272 and the lower front air outlet 111; another portion of the air in the shell cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet, and then is discharged through the lower air blade cavity D1 outlet 221, the lower air duct 25 and the lower front air outlet 111;

[0214] The above four downward air outlet methods can meet different heating needs.

[0215] There are three ways to output air simultaneously from top to bottom:

[0216] ① When the upper rear air outlet 152 and the lower rear air outlet 141 are both open, the first upper wind shielding structure 311 is in the second working position, the first lower wind shielding structure 321 is in the fourth working position, and the upper air blade chamber C3 outlet 213 and the lower air blade chamber D3 outlet 223 are both closed, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the upper rear air outlet 152 enters the shell cavity 17 through the upper rear air outlet 152, and the indoor air near the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; a portion of the air in the shell cavity 17 then 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 outlet 151; another portion of the air in the shell cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet, and is then discharged through the lower air blade cavity D1 outlet 221, the lower air duct 25, and the lower front air outlet 111;

[0217] ② When the upper rear air outlet 152 is open and the lower rear air outlet 141 is closed, the first upper wind shielding structure 311 is in the second working position and the first lower wind shielding structure 321 is in the fourth working position, and the upper air blade chamber C3 outlet 213 and the lower air blade chamber D3 outlet 223 are both closed, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air near the upper rear air outlet 152 enters the shell cavity 17 through the upper rear air outlet 152; a portion of the air in the shell cavity 17 then enters the upper air blade chamber 21 through the upper air blade chamber inlet, and is then discharged through the upper air blade chamber C1 outlet 211, the upper air duct 24, and the upper front air outlet 151; another portion of the air in the shell cavity 17 enters the lower air blade chamber 22 through the lower air blade chamber inlet, and is then discharged through the lower air blade chamber D1 outlet 221, the lower air duct 25, and the lower front air outlet 111;

[0218] ③ When the upper rear air outlet 152 is closed and the lower rear air outlet 141 is opened, the first upper wind shield structure 311 is in the second working position and the first lower wind shield structure 321 is in the fourth working position, and the upper air blade chamber C3 outlet 213 and the lower air blade chamber D3 outlet 223 are both closed, the upper air blades 214 and the lower air blades 224 are rotated, and the indoor air close to the lower rear air outlet 141 enters the shell cavity 17 through the lower rear air outlet 141; a part of the air in the shell cavity 17 then 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 outlet 151; another part of the air in the shell cavity 17 enters the lower air blade cavity 22 through the lower air blade cavity inlet, and is then discharged through the lower air blade cavity D1 outlet 221, the lower air duct 25 and the lower front air outlet 111.

[0219] A1 vents 241 are formed on the lower sidewall of the upper duct 24 , and A2 vents 242 are formed at the lower end of the upper duct 24 ; B1 vents 251 are formed on the upper sidewall of the lower duct 25 , and B2 vents 252 are formed at the upper end of the lower duct 25 .

[0220] Example 5

[0221] The present embodiment provides a control method for a cabinet air-conditioning indoor unit, wherein the cabinet air-conditioning indoor unit includes a shell 1 and an air duct assembly, wherein the shell 1 is surrounded by a shell cavity 17 and an upper front air outlet 151 and an upper rear air outlet 152 are formed on the upper portion of the shell 1, and a lower front air outlet 111 and a lower rear air outlet 141 are formed on the lower portion of the shell 1; the air duct assembly is arranged in the shell cavity 17 and the air duct assembly forms an upper air outlet main flow path for taking in air from the lower front air outlet 111 and discharging air from the upper front air outlet 151, and a lower air outlet main flow path for taking in air from the upper front air outlet 151 and discharging air from the lower front air outlet 111. The lower main air outlet path of the wind and the upper and lower simultaneous air outlet main paths for simultaneously discharging air from the upper front air outlet 151 and the lower front air outlet 111; a lower auxiliary air inlet flow path for assisting the air intake by the lower rear air outlet 141, an upper auxiliary air inlet flow path for assisting the air intake by the upper rear air outlet 152, and an upper and lower simultaneous auxiliary air inlet flow path for simultaneously assisting the air intake by the upper rear air outlet 152 and the lower rear air outlet 141 are formed between the shell cavity 17 and the air duct assembly; preferably, the cabinet air conditioner indoor unit is the cabinet air conditioner indoor unit of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4;

[0222] Control methods include:

[0223] S1. Determine the target operating mode of the indoor unit of the cabinet air conditioner;

[0224] S2. Comparing the current temperature of the indoor air with a first preset temperature;

[0225] S3. Determine a target main flow path and a target auxiliary air inlet flow path according to the target operating mode and a comparison result between the current temperature and the first preset temperature;

[0226] S4, controlling the indoor unit of the cabinet air conditioner to operate in a target operating mode so that the indoor air flows through a target main flow path and a target auxiliary air inlet flow path;

[0227] Among them, the target operating mode is heating mode or 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.

[0228] Furthermore, S3 includes:

[0229] When the target operating mode is cooling mode and the current temperature is greater than the first preset temperature, or when the target operating mode is 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;

[0230] The air is discharged through the upper front air vents 151 and the lower front air vents 111 at the same time, achieving enveloping cooling or enveloping heating.

[0231] S3 also includes:

[0232] When the target operating mode is cooling mode and the current temperature is less than or equal to the first preset temperature, the temperature difference between the upper and lower indoor air temperatures is calculated and compared with the second preset temperature;

[0233] When the upper and lower temperature difference is greater than a second preset temperature, the target main flow path is the upper 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 the lower rear air inlet is low, the operating frequency of the compressor is reduced, and the air conditioner is energy-saving;

[0234] 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 outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower auxiliary air inlet flow path; thus, the cold air does not blow on people, improving the air conditioning comfort;

[0235] Additionally, S3 includes:

[0236] When the target operating mode is heating mode and the current temperature is greater than or equal to the first preset temperature, the temperature difference between the upper and lower indoor air temperatures is calculated and compared with the third preset temperature;

[0237] When the upper and lower temperature difference is greater than a third preset temperature, the target main flow path is the lower 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 the upper rear air inlet is high, and the operating frequency of the compressor is reduced to achieve energy saving of the air conditioner;

[0238] 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 outlet main flow path, and the target auxiliary air inlet flow path is the upper and lower auxiliary air inlet flow paths at the same time; hot air is not blown on the head, thereby improving air conditioning comfort.

[0239] An upper temperature sensing package is provided in the upper layer of the room to detect the temperature of the upper air in the room; a lower temperature sensing package is provided in the lower layer of the room to detect the temperature of the lower air in the room.

[0240] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A cabinet-type 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 power fan 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 power fan cavity communicates with the housing cavity through a fan cavity inlet. The upper air duct can be selectively communicated with the power fan cavity or the housing cavity. The lower air duct can be selectively communicated with the power fan cavity or the housing cavity. When the upper air duct is communicated with the power fan cavity and the lower air duct is communicated 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 is communicated with the housing cavity and the lower air duct is communicated with the power fan 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 unit of the 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 for assistance. 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 for assistance. 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 for assistance.

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 are communicated with the power fan 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 damper structure is movably arranged between the A1 ventilation opening and the A2 ventilation opening. The first upper air damper structure has a first working position and a second working position. When the first upper air damper structure is in the first working position, the first upper air damper 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 air damper structure is in the second working position, the first upper air damper 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. 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 disposed 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.

5. The indoor unit of a cabinet air conditioner 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 disposed 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; A lower fan blade is rotatably disposed 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; 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; 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.

6. The cabinet-type air conditioner indoor unit 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 disposed 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; 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; 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 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 wind-blocking structure and a second lower wind-blocking structure are also rotatably disposed in the intermediate fan blade cavity; the second upper wind-blocking structure is close to the intermediate fan blade cavity upper outlet, and the second lower wind-blocking structure is close to the intermediate fan blade cavity lower outlet; both the second upper wind-blocking structure and the second lower wind-blocking 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 cabinet type air conditioner indoor unit 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 vent and the upper blade cavity C2 outlet, the lower auxiliary air duct communicates with the lower front air vent 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 with the upper wind blade chamber and 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 opening; 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 with the lower wind blade chamber and 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 opening; 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, characterized in that, 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 an upper front air outlet and an upper rear air outlet are formed in the upper part of the housing, and a lower front air outlet and a lower rear air outlet are 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 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, 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 are formed between the housing cavity and the air duct assembly; 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 a first preset temperature; 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; Wherein, the target operation mode is a heating mode or a cooling mode, and the target main flow path is an upper air outlet main flow path or a lower air outlet main flow path or an upper and lower simultaneous air outlet main flow path; the target auxiliary air inlet flow path is a lower auxiliary air inlet flow path or an upper auxiliary air inlet flow path or an 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-type 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 of the room and compare the upper and lower temperature difference with a 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-type air conditioner indoor unit according to claim 15, characterized in that, Determining the target main flow path and the target auxiliary intake air 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 intake air flow path is the upper auxiliary intake air 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 intake air flow path is the upper and lower simultaneous auxiliary intake air flow path.

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