Air duct device, cabinet type air conditioner indoor unit and control method

Abstract

The invention provides an air duct device, a cabinet type air conditioner indoor unit and a control method, the air duct device comprises a volute and a volute cover, and the volute and the volute cover are matched to form an upper fan blade cavity and a lower fan blade cavity; an upper fan blade cavity outlet, an upper communicating opening and an upper fan blade cavity inlet are formed in the upper fan blade cavity; a lower fan blade cavity outlet, a lower communicating port and a lower fan blade cavity inlet are formed in the lower fan blade cavity; the first upper air blocking structure opens an upper fan blade cavity outlet, the second upper air blocking structure opens an upper communicating opening, the first lower air blocking structure closes a lower fan blade cavity outlet, the second lower air blocking structure opens a lower communicating opening, so that the upper fan blades and the lower fan blades rotate, and the air duct device is in a strong upper air outlet mode; the first lower air blocking structure opens a lower blade cavity outlet, the second lower air blocking structure opens a lower communicating opening, the first upper air blocking structure closes an upper blade cavity outlet, the second upper air blocking structure opens an upper communicating opening, and the air duct device is in a strong lower air outlet mode; the flow speed of air in the fan blade cavity and the air outlet amount of the air duct device are improved, and the air supply range is widened.

Description

Technical Field

[0001] The present invention belongs to the technical field of ventilation equipment, and particularly relates to an air duct device, a cabinet-type air conditioner indoor unit and a control method. Background Art

[0002] In existing ventilation equipment, a housing is formed with an upper air outlet, a lower air outlet and an air inlet, and an upper air duct, a blower cavity and a lower air duct are formed inside the housing; both ends of the upper air duct communicate with the upper air outlet and the upper outlet of the blower cavity, both ends of the lower air duct communicate with the lower air outlet and the lower outlet of the blower cavity, and the air inlet communicates with the inlet of the blower cavity; air enters the blower cavity through the inlet of the blower cavity, and the air in the blower cavity passes through the upper outlet of the blower cavity and the upper air duct and is discharged through the upper air outlet to achieve upper air supply; the air in the blower cavity passes through the lower outlet of the blower cavity and the lower air duct and is discharged through the lower air outlet to achieve lower air supply; however, the air flow path is long and the flow resistance is large, resulting in insufficient air volume, narrow air supply range and short air supply distance. Summary of the Invention

[0003] In view of this, the present invention provides an air duct device, a cabinet-type air conditioner indoor unit and a control method to solve the problems such as insufficient air volume, narrow air supply range and short air supply distance caused by the long air flow path and large flow resistance in the prior art.

[0004] The present invention provides an air duct device, including a volute and a volute cover, and the volute and the volute cover are cooperatively connected to form a blower cavity; the blower cavity includes an upper blower cavity and a lower blower cavity which are arranged up and down;

[0005] The upper blower cavity is formed with an upper blower cavity outlet, an upper communication port and an upper blower cavity inlet, and the upper blower cavity inlet is formed between the upper blower cavity outlet and the upper communication port;

[0006] A first upper wind blocking structure is movably arranged at the upper blower cavity outlet, and the first upper wind blocking structure can be controlled to open or close the upper blower cavity outlet; a second upper wind blocking structure is movably arranged at the upper communication port, and the second upper wind blocking structure can be controlled to open or close the upper communication port;

[0007] The lower blower cavity is formed with a lower blower cavity outlet, a lower communication port and a lower blower cavity inlet, and the lower blower cavity inlet is formed between the lower blower cavity outlet and the lower communication port;

[0008] A first lower wind blocking structure is movably arranged at the lower blower cavity outlet, and the first lower wind blocking structure can be controlled to open or close the lower blower cavity outlet; a second lower wind blocking structure is movably arranged at the lower communication port, and the second lower wind blocking structure can be controlled to open or close the lower communication port.

[0009] Further optionally, the air duct device further includes an upper air blade and a lower air blade. The upper air blade is rotatably arranged in the upper air blade cavity, and the lower air blade is rotatably arranged in the lower air blade cavity. The air duct device is provided with a conventional upper air outlet mode and a strong upper air outlet mode.

[0010] The first upper wind blocking structure opens the outlet of the upper air blade cavity, and the second upper wind blocking structure closes the upper communication port. By rotating the upper air blade, the air duct device can operate in the conventional upper air outlet mode.

[0011] The first upper wind blocking structure opens the outlet of the upper air blade cavity, the second upper wind blocking structure opens the upper communication port, the first lower wind blocking structure closes the outlet of the lower air blade cavity, and the second lower wind blocking structure opens the lower communication port. By rotating both the upper air blade and the lower air blade, the air duct device can operate in the strong upper air outlet mode. Among them, the rotation speed of the lower air blade is greater than that of the upper air blade.

[0012] Further optionally, the air duct device is also provided with a conventional lower air outlet mode and a strong lower air outlet mode.

[0013] The first lower wind blocking structure opens the outlet of the lower air blade cavity, and the second lower wind blocking structure closes the lower communication port. By rotating the lower air blade, the air duct device can operate in the conventional lower air outlet mode.

[0014] The first lower wind blocking structure opens the outlet of the lower air blade cavity, the second lower wind blocking structure opens the lower communication port, the first upper wind blocking structure closes the outlet of the upper air blade cavity, and the second upper wind blocking structure opens the upper communication port. By rotating both the upper air blade and the lower air blade, the air duct device can operate in the strong lower air outlet mode. Among them, the rotation speed of the upper air blade is greater than that of the lower air blade.

[0015] Further optionally, the air duct device is also provided with an upper and lower simultaneous air outlet mode.

[0016] The first upper wind blocking structure opens the outlet of the upper air blade cavity, the second upper wind blocking structure closes the upper communication port, the first lower wind blocking structure opens the outlet of the lower air blade cavity, and the second lower wind blocking structure closes the lower communication port. By rotating both the upper air blade and the lower air blade, the air duct device can operate in the upper and lower simultaneous air outlet mode.

[0017] Further optionally, the volute and the volute cover also form an upper air duct and a lower air duct. The upper air duct is arranged at the top of the upper air blade cavity and the upper air duct communicates with the outlet of the upper air blade cavity. The lower air duct is arranged at the bottom of the lower air blade cavity and the lower air duct communicates with the outlet of the lower air blade cavity.

[0018] The present invention also provides a cabinet-type indoor air conditioner, which includes a housing and the above-described air duct device; the housing encloses a housing cavity, an upper air inlet is formed at the upper part of the housing, a lower air outlet is formed at the lower part of the housing, and both the upper air inlet and the lower air outlet communicate with the interior; the air duct device is arranged in the housing cavity;

[0019] The upper air duct communicates with the upper air inlet, and the lower air duct communicates with the lower air outlet;

[0020] An air inlet cavity is formed between the housing and the air duct device, the upper air blade cavity inlet communicates with the upper air blade cavity and the air inlet cavity, and the lower air blade cavity inlet communicates with the lower air blade cavity and the air inlet cavity.

[0021] Further optionally, the housing includes a housing left side wall and a housing right side wall which are arranged opposite to each other left and right;

[0022] The cabinet-type indoor air conditioner further includes an indoor heat exchanger, the indoor heat exchanger is arranged in the air inlet cavity and includes a left heat exchanger and a right heat exchanger, the left heat exchanger is arranged between the housing left side wall and the air duct device, and the right heat exchanger is arranged between the housing right side wall and the air duct device.

[0023] Further optionally, the upper air blade cavity inlet includes an upper air blade cavity left inlet and an upper air blade cavity right inlet, and the upper air blade cavity left inlet and the upper air blade cavity right inlet are respectively arranged close to the housing left side wall and the housing right side wall; the lower air blade cavity inlet includes a lower air blade cavity left inlet and a lower air blade cavity right inlet, and the lower air blade cavity left inlet and the lower air blade cavity right inlet are respectively arranged close to the housing left side wall and the housing right side wall;

[0024] The left heat exchanger includes a first left heat exchanger and a second left heat exchanger which are arranged opposite to each other up and down, the first left heat exchanger is arranged between the housing left side wall and the upper air blade cavity left inlet, and the second left heat exchanger is arranged between the housing left side wall and the lower air blade cavity left inlet; satisfying: 90°≤ɑ≤180°;

[0025] The right heat exchanger includes a first right heat exchanger and a second right heat exchanger which are arranged opposite to each other up and down, the first right heat exchanger is arranged between the housing right side wall and the upper air blade cavity right inlet, and the second right heat exchanger is arranged between the housing right side wall and the lower air blade cavity right inlet; satisfying: 90°≤β≤180°;

[0026] Wherein, ɑ is the included angle between the heat exchange surface of the first left heat exchanger and the heat exchange surface of the second left heat exchanger, and β is the included angle between the heat exchange surface of the first right heat exchanger and the heat exchange surface of the second right heat exchanger.

[0027] The present invention further provides a control method for a cabinet-type air conditioner indoor unit, where the cabinet-type air conditioner indoor unit is the cabinet-type air conditioner indoor unit described in any one of the above; the control method includes:

[0028] Determine the current air volume and the current operating mode of the cabinet-type air conditioner indoor unit;

[0029] Judge whether the current air volume is greater than or equal to a preset air volume;

[0030] Determine the target air outlet mode according to the judgment result of whether the current air volume is greater than or equal to the preset air volume and the current operating mode;

[0031] Control the cabinet-type air conditioner indoor unit to operate in the target air outlet mode;

[0032] Wherein, the current operating mode includes a cooling mode and a heating mode, and the target air outlet mode includes a conventional upper air outlet mode, a strong upper air outlet mode, a conventional lower air outlet mode, and a strong lower air outlet mode.

[0033] Further optionally, the determining the target air outlet mode according to the judgment result of whether the current air volume is greater than or equal to the preset air volume and the current operating mode includes:

[0034] When the current air volume is greater than or equal to the preset air volume and the current operating mode is the cooling mode, determine that the target air outlet mode is the conventional upper air outlet mode;

[0035] When the current air volume is less than the preset air volume and the current operating mode is the cooling mode, determine that the target air outlet mode is the strong upper air outlet mode.

[0036] Further optionally, the determining the target air outlet mode according to the judgment result of whether the current air volume is greater than or equal to the preset air volume and the current operating mode further includes:

[0037] When the current air volume is greater than or equal to the preset air volume and the current operating mode is the heating mode, determine that the target air outlet mode is the conventional lower air outlet mode;

[0038] When the current air volume is less than the preset air volume and the current operating mode is the heating mode, determine that the target air outlet mode is the strong lower air outlet mode.

[0039] Compared with the prior art, the beneficial effects of the present invention mainly lie in:

[0040] The first upper windshield structure opens the outlet of the upper wind blade cavity, the second upper windshield structure opens the upper communication port, the first lower windshield structure closes the outlet of the lower wind blade cavity, and the second lower windshield structure opens the lower communication port; when the upper wind blade and the lower wind blade both rotate, the air duct device can operate in the strong upward air outlet mode; the first lower windshield structure opens the outlet of the lower wind blade cavity, the second lower windshield structure opens the lower communication port, the first upper windshield structure closes the outlet of the upper wind blade cavity, and the second upper windshield structure opens the upper communication port; when the upper wind blade and the lower wind blade both rotate, the air duct device can operate in the strong downward air outlet mode; this improves the air flow velocity in the upper wind blade cavity and the lower wind blade cavity and the air output of the air duct device, expands the air supply range, extends the air supply distance, increases the temperature change speed of the indoor air, makes the temperature distribution of the indoor air uniform, and improves the overall comfort of the air, solving the problems of insufficient air output, narrow air supply range, and short air supply distance caused by large flow resistance. Description of the Drawings

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0042] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0043] Figure 1 Schematic assembly structure diagram of the embodiment of the air duct device provided by the present invention;

[0044] Figure 2 Schematic exploded structure diagram of the embodiment of the air duct device provided by the present invention;

[0045] Figure 3 Schematic cross-sectional structure diagram of the embodiment of the air duct device provided by the present invention;

[0046] Figure 4a Schematic diagram of the embodiment of the air flow path when the air duct device provided by the present invention is in the strong upward air outlet mode;

[0047] Figure 4b Schematic diagram of the embodiment of the air flow path when the air duct device provided by the present invention is in the strong downward air outlet mode;

[0048] Figure 4cSchematic diagram of the air flow path when the air duct device provided by the present invention is in the up-and-down simultaneous air outlet mode;

[0049] Figure 5a and Figure 5b Schematic diagram of the assembly structure of the air duct device and the indoor heat exchanger provided by the present invention;

[0050] Figure 6 Schematic diagram of the structure of the cabinet-type air conditioner indoor unit provided by the present invention;

[0051] In the figure:

[0052] 1 - housing; 11 - front side wall of the housing; 111 - lower air outlet; 12 - left side wall of the housing; 13 - right side wall of the housing; 14 - rear side wall of the housing; 15 - top wall of the housing; 151 - upper air outlet;

[0053] 2 - air duct device; 21 - volute; 22 - volute cover; 23 - upper air duct; 24 - lower air duct; 25 - upper air blade cavity; 251 - inlet of the upper air blade cavity; 252 - outlet of the upper air blade cavity; 253 - upper communication port; 26 - lower air blade cavity; 261 - inlet of the lower air blade cavity; 262 - outlet of the lower air blade cavity; 263 - lower communication port; 27 - upper air blade; 28 - lower air blade;

[0054] 31 - first upper wind blocking structure; 32 - second upper wind blocking structure; 33 - first lower wind blocking structure; 34 - second lower wind blocking structure;

[0055] 41 - left heat exchanger; 411 - first left heat exchanger; 412 - second left heat exchanger; 42 - right heat exchanger; 421 - first right heat exchanger; 422 - second right heat exchanger. Detailed implementation manners

[0056] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0057] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0058] It should be understood that the term "and / or" used herein is merely a description of the associated relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0059] It should also be noted that the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0060] In the existing ventilation equipment, air enters the airfoil cavity through the inlet of the airfoil cavity. The air in the airfoil cavity passes through the upper outlet and the upper air duct of the airfoil cavity and is discharged through the upper outlet to achieve upward air outlet; the air in the airfoil cavity passes through the lower outlet and the lower air duct of the airfoil cavity and is discharged through the lower outlet to achieve downward air outlet; however, the air flow path is long and the flow resistance is large, resulting in insufficient air volume, narrow air supply range and short air supply distance.

[0061] The present invention creatively provides an air duct device, which includes a volute and a volute cover. The volute and the volute cover are cooperatively connected to form an upper airfoil cavity and a lower airfoil cavity arranged up and down. The upper airfoil cavity is formed with an upper airfoil cavity outlet, an upper communication port and an upper airfoil cavity inlet; a first upper wind blocking structure is movably arranged at the upper airfoil cavity outlet, and a second upper wind blocking structure is movably arranged at the upper communication port; the lower airfoil cavity is formed with a lower airfoil cavity outlet, a lower communication port and a lower airfoil cavity inlet; a first lower wind blocking structure is movably arranged at the lower airfoil cavity outlet, and a second lower wind blocking structure is movably arranged at the lower communication port.

[0062] The first upper wind blocking structure opens the upper airfoil cavity outlet, the second upper wind blocking structure opens the upper communication port, the first lower wind blocking structure closes the lower airfoil cavity outlet, and the second lower wind blocking structure opens the lower communication port; when the upper airfoil and the lower airfoil both rotate, the air duct device can operate in a strong upward air outlet mode.

[0063] The first lower wind blocking structure opens the lower airfoil cavity outlet, the second lower wind blocking structure opens the lower communication port, the first upper wind blocking structure closes the upper airfoil cavity outlet, and the second upper wind blocking structure opens the upper communication port; when the upper airfoil and the lower airfoil both rotate, the air duct device can operate in a strong downward air outlet mode.

[0064] It increases the air flow velocity in the airfoil cavity and the air output of the air duct device, expands the air supply range, extends the air supply distance, increases the temperature change speed of the indoor air, makes the temperature distribution of the indoor air uniform, and improves the overall comfort of the air, solving the problems of insufficient air output, narrow air supply range and short air supply distance caused by large flow resistance.

[0065] <Air duct device>

[0066] As Figures 1 to 4c shown, this embodiment proposes an air duct device, which includes a volute 21 and a volute cover 22. The volute 21 and the volute cover 22 are cooperatively connected to form an airfoil cavity; the airfoil cavity includes an upper airfoil cavity 25 and a lower airfoil cavity 26 which are oppositely arranged up and down;

[0067] The upper airfoil cavity 25 is formed with an upper airfoil cavity outlet 252, an upper communication port 253 and an upper airfoil cavity inlet 251. The upper airfoil cavity inlet 251 is formed between the upper airfoil cavity outlet 252 and the upper communication port 253; air can enter the upper airfoil cavity 25 through the upper airfoil cavity inlet 251. Specifically, the upper end of the upper airfoil cavity 25 is formed with an upper airfoil cavity outlet 252, one end of the upper airfoil cavity 25 close to the lower airfoil cavity 26 is formed with an upper communication port 253, and an upper airfoil cavity inlet 251 is formed at both axial ends of the upper airfoil cavity 25;

[0068] A first upper wind-blocking structure 31 is movably arranged at the upper airfoil cavity outlet 252. The first upper wind-blocking structure 31 can be controlled to open or close the upper airfoil cavity outlet 252; when the first upper wind-blocking structure 31 opens the upper airfoil cavity outlet 252, the air in the upper airfoil cavity 25 can be discharged through the upper airfoil cavity outlet 252; when the first upper wind-blocking structure 31 closes the upper airfoil cavity outlet 252, the air in the upper airfoil cavity 25 cannot be discharged through the upper airfoil cavity outlet 252; a second upper wind-blocking structure 32 is movably arranged at the upper communication port 253. The second upper wind-blocking structure 32 can be controlled to open or close the upper communication port 253; when the second upper wind-blocking structure 32 opens the upper communication port 253, the air in the upper airfoil cavity 25 can be discharged through the upper communication port 253; preferably, the first upper wind-blocking structure 31 is a first upper baffle, and the second upper wind-blocking structure 32 is a second upper baffle;

[0069] The lower airfoil cavity 26 is formed with a lower airfoil cavity outlet 262, a lower communication port 263 and a lower airfoil cavity inlet 261. The lower airfoil cavity inlet 261 is formed between the lower airfoil cavity outlet 262 and the lower communication port 263; air can enter the lower airfoil cavity 26 through the lower airfoil cavity inlet 261. Specifically, the lower end of the lower airfoil cavity 26 is formed with a lower airfoil cavity outlet 262, one end of the lower airfoil cavity 26 close to the upper airfoil cavity 25 is formed with a lower communication port 263, and a lower airfoil cavity inlet 261 is formed at both axial ends of the lower airfoil cavity 26;

[0070] A first lower wind-blocking structure 33 is movably arranged at the outlet 262 of the lower wind blade cavity. The first lower wind-blocking structure 33 can be controlled to open or close the outlet 262 of the lower wind blade cavity. When the first lower wind-blocking structure 33 opens the outlet 262 of the lower wind blade cavity, the air in the lower wind blade cavity 26 can be discharged through the outlet 262 of the lower wind blade cavity. When the first lower wind-blocking structure 33 closes the outlet 262 of the lower wind blade cavity, the air in the lower wind blade cavity 26 cannot be discharged through the outlet 262 of the lower wind blade cavity. A second lower wind-blocking structure 34 is movably arranged at the lower communication port 263. The second lower wind-blocking structure 34 can be controlled to open or close the lower communication port 263. When the second lower wind-blocking structure 34 opens the lower communication port 263, the air in the lower wind blade cavity 26 can be discharged through the lower communication port 263. Preferably, the first lower wind-blocking structure 33 is a first lower baffle, and the second lower wind-blocking structure 34 is a second lower baffle.

[0071] Aiming at the problem that the single upper air outlet mode of the air duct device cannot meet different upper air outlet requirements, in this embodiment, it is proposed that the air duct device further includes an upper wind blade 27 and a lower wind blade 28. The upper wind blade 27 is rotatably arranged in the upper wind blade cavity 25, and the lower wind blade 28 is rotatably arranged in the lower wind blade cavity 26. Preferably, both the upper wind blade 27 and the lower wind blade 28 are centrifugal wind blades, and the axes of the upper wind blade 27 and the lower wind blade 28 both extend along the left-right direction of the air duct device. The air duct device is provided with a conventional upper air outlet mode and a strong upper air outlet mode.

[0072] When the air duct device is in the conventional upper air outlet mode, the first upper wind-blocking structure 31 opens the outlet 252 of the upper wind blade cavity, and the second upper wind-blocking structure 32 closes the upper communication port 253. By rotating the upper wind blade 27, the air can enter the upper wind blade cavity 25 through the inlet 251 of the upper wind blade cavity and then be discharged through the outlet 252 of the upper wind blade cavity.

[0073] When the air duct device is in the strong upper air outlet mode, the first upper wind-blocking structure 31 opens the outlet 252 of the upper wind blade cavity, the second upper wind-blocking structure 32 opens the upper communication port 253, the first lower wind-blocking structure 33 closes the outlet 262 of the lower wind blade cavity, and the second lower wind-blocking structure 34 opens the lower communication port 263, then the upper communication port 253 and the lower communication port 263 are communicated. By rotating both the upper wind blade 27 and the lower wind blade 28, a part of the air enters the lower wind blade cavity 26 through the inlet 261 of the lower wind blade cavity and then enters the upper wind blade cavity 25 through the lower communication port 263 and the upper communication port 253. Another part of the air enters the upper wind blade cavity 25 through the inlet 251 of the upper wind blade cavity, and the air in the upper wind blade cavity 25 is discharged through the outlet 252 of the upper wind blade cavity. Among them, the rotation speed of the lower wind blade 28 is greater than that of the upper wind blade 27. Therefore, the air volume of the air duct device in the strong upper air outlet mode is greater than that in the conventional upper air outlet mode, the air supply range is expanded, the air supply distance is extended, the temperature change speed of the indoor air is increased, and the temperature distribution of the indoor air is made uniform.

[0074] In view of the problem that the single downward air outlet mode of the air duct device cannot meet different downward air outlet requirements, this embodiment proposes that the air duct device is also provided with a conventional downward air outlet mode and a strong downward air outlet mode;

[0075] When the air duct device is in the conventional downward air outlet mode, the first lower wind blocking structure 33 opens the lower wind blade cavity outlet 262, and the second lower wind blocking structure 34 closes the lower communication port 263; the lower wind blade 28 is rotated, and air can enter the lower wind blade cavity 26 through the lower wind blade cavity inlet 261 and then be discharged through the lower wind blade cavity outlet 262;

[0076] When the air duct device is in the strong downward air outlet mode, the first lower wind blocking structure 33 opens the lower wind blade cavity outlet 262, the second lower wind blocking structure 34 opens the lower communication port 263, the first upper wind blocking structure 31 closes the upper wind blade cavity outlet 252, and the second upper wind blocking structure 32 opens the upper communication port 253, then the upper communication port 253 and the lower communication port 263 are communicated; the upper wind blade 27 and the lower wind blade 28 are both rotated, a part of the air enters the upper wind blade cavity 25 through the upper wind blade cavity inlet 251, and then enters the lower wind blade cavity 26 through the upper communication port 253 and the lower communication port 263; another part of the air enters the lower wind blade cavity 26 through the lower wind blade cavity inlet 261, and the air in the lower wind blade cavity 26 is discharged through the lower wind blade cavity outlet 262; wherein, the rotation speed of the upper wind blade 27 is greater than that of the lower wind blade 28; therefore, the air volume of the air duct device in the strong downward air outlet mode is greater than that in the conventional downward air outlet mode, the air supply range is expanded, the air supply distance is extended, the temperature change speed of the indoor air is increased, and the temperature distribution of the indoor air is made uniform.

[0077] In addition, the air duct device is also provided with an upper and lower simultaneous air outlet mode; when the air duct device is in the upper and lower simultaneous air outlet mode, the first upper wind blocking structure 31 opens the upper wind blade cavity outlet 252, and the second upper wind blocking structure 32 closes the upper communication port 253; the first lower wind blocking structure 33 opens the lower wind blade cavity outlet 262, and the second lower wind blocking structure 34 closes the lower communication port 263, and the upper communication port 253 and the lower communication port 263 are not communicated; the upper wind blade 27 and the lower wind blade 28 are both rotated, a part of the air enters the upper wind blade cavity 25 through the upper wind blade cavity inlet 251 and then is discharged through the upper wind blade cavity outlet 252; another part of the air enters the lower wind blade cavity 26 through the lower wind blade 28 inlet and then is discharged through the lower wind blade cavity outlet 262.

[0078] Furthermore, the volute 21 and the volute cover 22 also form an upper air duct 23 and a lower air duct 24. The upper air duct 23 is arranged at the top of the upper wind blade cavity 25 and the lower end of the upper air duct 23 is communicated with the upper wind blade cavity outlet 252; the air discharged through the upper wind blade cavity outlet 252 can be discharged through the upper air duct 23; the lower air duct 24 is arranged at the bottom of the lower wind blade cavity 26 and the upper end of the lower air duct 24 is communicated with the outlet of the lower wind blade cavity 26, and the air discharged through the lower wind blade cavity outlet 262 can be discharged through the lower air duct 24.

[0079] <Floor-standing air conditioner indoor unit>

[0080] As Figures 4a to 6 shown, this embodiment also proposes a floor-standing air conditioner indoor unit, which includes a housing 1 and the above-mentioned air duct device; the housing 1 encloses a housing cavity, and an upper air inlet 151 is formed in the upper part of the housing 1, and a lower air inlet 111 is formed in the lower part of the housing. Both the upper air inlet and the lower air inlet are communicated with the room; the air duct device is arranged in the housing cavity; specifically, the housing 1 includes a housing top wall 15 and a housing front side wall 11. The housing top wall 15 forms the upper air inlet 151, and the lower side of the housing front side wall 11 forms the lower air inlet 111;

[0081] The upper air duct 23 is communicated with the upper air inlet 151, and the air in the upper air duct 23 can be discharged from the upper air inlet 151, so as to realize the conventional upper air outlet mode and the strong upper air outlet mode; the lower air duct 24 is communicated with the lower air inlet 111, and the air in the lower air duct 24 can be discharged from the lower air inlet 111, so as to realize the conventional lower air outlet mode and the strong lower air outlet mode; specifically, the upper end of the upper air duct 23 is communicated with the upper air inlet 151, and the lower end of the lower air duct 24 is communicated with the lower air inlet 111;

[0082] An air inlet cavity is formed between the housing 1 and the air duct device. The upper air vane cavity inlet 251 is communicated with the upper air vane cavity 25 and the air inlet cavity, and the lower air vane cavity inlet 261 is communicated with the lower air vane cavity 26 and the air inlet cavity; the air in the air inlet cavity can enter the upper air vane cavity 25 through the upper air vane cavity inlet 251, or enter the lower air vane cavity 26 through the lower air vane cavity inlet 261;

[0083] The positions of the upper air inlet 151 and the lower air inlet 111 are optimized, the distance between the upper air inlet 151 and the lower air inlet 111 is increased, and the principles of cold air sinking during refrigeration and hot air rising during heating are fully utilized; the flow range and the air supply range of the air flow are expanded, and the air supply distance is extended; the temperature change speed of the indoor air is increased, the temperature distribution of the indoor air is made uniform, and the overall comfort of the air is improved.

[0084] Aiming at the problem of poor refrigeration and heating effects caused by unreasonable setting of the indoor heat exchanger, this embodiment proposes that the housing 1 further includes a housing left side wall 12 and a housing right side wall 13. The housing left side wall 12 and the housing right side wall 13 are arranged oppositely and are both connected to the housing front side wall 11; the upper air vane cavity inlet 251 includes an upper air vane cavity left inlet and an upper air vane cavity right inlet, and the upper air vane cavity left inlet and the upper air vane cavity right inlet are respectively arranged close to the housing left side wall 12 and the housing right side wall 13; the lower air vane cavity inlet 261 includes a lower air vane cavity left inlet and a lower air vane cavity right inlet, and the lower air vane cavity left inlet and the lower air vane cavity right inlet are respectively arranged close to the housing left side wall 12 and the housing right side wall 13; the upper air vane cavity left inlet and the lower air vane cavity left inlet are arranged vertically opposite to each other, and the upper air vane cavity right inlet and the lower air vane cavity right inlet are arranged vertically opposite to each other;

[0085] The cabinet-type air conditioner indoor unit further includes an indoor heat exchanger, which is arranged in the air inlet cavity and includes a left heat exchanger 41 and a right heat exchanger 42. The left heat exchanger 41 is arranged between the left side wall 12 of the housing and the left inlets of the upper air blade cavity and the lower air blade cavity, and the right heat exchanger 42 is arranged between the right side wall 13 of the housing and the right inlets of the upper air blade cavity and the lower air blade cavity.

[0086] The left heat exchanger 41 includes a first left heat exchanger 411 and a second left heat exchanger 412 arranged opposite to each other up and down. The first left heat exchanger 411 is arranged between the left side wall 12 of the housing and the left inlet of the upper air blade cavity, and the second left heat exchanger 412 is arranged between the left side wall 12 of the housing and the left inlet of the lower air blade cavity; satisfying: 90°≤ɑ≤180°;

[0087] The right heat exchanger 42 includes a first right heat exchanger 421 and a second right heat exchanger 422 arranged opposite to each other up and down. The first right heat exchanger 421 is arranged between the right side wall 13 of the housing and the right inlet 251 of the upper air blade cavity, and the second right heat exchanger 422 is arranged between the right side wall 13 of the housing and the right inlet 261 of the lower air blade cavity; satisfying: 90°≤β≤180°;

[0088] Wherein, ɑ is the included angle between the heat exchange surface of the first left heat exchanger 411 and the heat exchange surface of the second left heat exchanger 412, and β is the included angle between the heat exchange surface of the first right heat exchanger 421 and the heat exchange surface of the second right heat exchanger 422.

[0089] When the cabinet-type air conditioner indoor unit is in the conventional upward air outlet mode, the air flow path is: air inlet cavity → first left heat exchanger 411 → left inlet of the upper air blade cavity → upper air blade cavity 25; air inlet cavity → first right heat exchanger 421 → right inlet of the upper air blade cavity → upper air blade cavity 25; upper air blade cavity 25 → upper air blade cavity outlet 252 → upper air duct 23 - upper air outlet 151;

[0090] When the cabinet-type air conditioner indoor unit is in the strong upward air outlet mode, the air flow path is: air inlet cavity → first left heat exchanger 411 → left inlet of the upper air blade cavity → upper air blade cavity 25; air inlet cavity → first right heat exchanger 421 → right inlet of the upper air blade cavity → upper air blade cavity 25; air inlet cavity → second left heat exchanger 412 → left inlet of the lower air blade cavity → lower air blade cavity 26; air inlet cavity → second right heat exchanger 422 → right inlet of the lower air blade cavity → lower air blade cavity 26;

[0091] Lower air blade cavity 26 → lower communication port 263 → upper communication port 253 → upper air blade cavity 25; upper air blade cavity 25 → upper air blade cavity outlet 252 → upper air duct 23 - upper air outlet 151;

[0092] When the floor-standing air conditioner indoor unit is in the conventional downward air outlet mode, the air flow path is: air inlet cavity → second left heat exchanger 412 → left inlet of the lower air blade cavity → lower air blade cavity 26; air inlet cavity → second right heat exchanger 422 → right inlet of the lower air blade cavity → lower air blade cavity 26; lower air blade cavity 26 → outlet 262 of the lower air blade cavity → lower air duct 24 - lower air outlet 111;

[0093] When the floor-standing air conditioner indoor unit is in the strong downward air outlet mode, the air flow path is: air inlet cavity → second left heat exchanger 412 → left inlet of the lower air blade cavity → lower air blade cavity 26; air inlet cavity → second right heat exchanger 422 → right inlet of the lower air blade cavity → lower air blade cavity 26; air inlet cavity → first left heat exchanger 411 → left inlet of the upper air blade cavity → upper air blade cavity 25; air inlet cavity → first right heat exchanger 421 → right inlet of the upper air blade cavity → upper air blade cavity 25;

[0094] Upper air blade cavity 25 → upper connection port 253 → lower connection port 263 → lower air blade cavity 26; lower air blade cavity 26 → outlet 262 of the lower air blade cavity → lower air duct 24 - lower air outlet 111;

[0095] The space between the air duct device 2 and the housing 1 is fully utilized, the structures of the left heat exchanger 41 and the right heat exchanger 42 are optimized, the heat exchange areas of the left heat exchanger 41 and the right heat exchanger 42 are increased, so that the air in the air inlet cavity can complete sufficient heat exchange with the left heat exchanger 41 and the right heat exchanger 42, enabling the room where the indoor unit is located to quickly reach the set temperature and improving the comfort of the air outlet of the floor-standing air conditioner indoor unit.

[0096] <Control method>

[0097] This embodiment also proposes a control method for a floor-standing air conditioner indoor unit, and the floor-standing air conditioner indoor unit is the floor-standing air conditioner indoor unit described in any one of the above; the control method includes:

[0098] Determine the current air volume and the current operating mode of the floor-standing air conditioner indoor unit;

[0099] Judge whether the current air volume is greater than or equal to the preset air volume;

[0100] Determine the target air outlet mode according to the judgment result of whether the current air volume is greater than or equal to the preset air volume and the current operating mode;

[0101] Control the floor-standing air conditioner indoor unit to operate in the target air outlet mode;

[0102] Wherein, the current operating mode includes a cooling mode and a heating mode, and the target air outlet mode includes a conventional upward air outlet mode, a strong upward air outlet mode, a conventional downward air outlet mode, and a strong downward air outlet mode.

[0103] Furthermore, determining the target air outlet mode according to the judgment result of whether the current air volume is greater than or equal to the preset air volume and the current operating mode includes:

[0104] When the current air output is greater than or equal to the preset air output and the current operation mode is the cooling mode, determine that the target air outlet mode is the conventional upper air outlet mode;

[0105] When the current air output is less than the preset air output and the current operation mode is the cooling mode, determine that the target air outlet mode is the strong upper air outlet mode.

[0106] In addition, determining the target air outlet mode according to the judgment result of whether the current air output is greater than or equal to the preset air output and the current operation mode further includes:

[0107] When the current air output is greater than or equal to the preset air output and the current operation mode is the heating mode, determine that the target air outlet mode is the conventional lower air outlet mode;

[0108] When the current air output is less than the preset air output and the current operation mode is the heating mode, determine that the target air outlet mode is the strong lower air outlet mode.

[0109] The above specifically illustrates and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structures, setting manners or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent settings included within the spirit and scope of the appended claims.

Claims

1. An air duct device, characterized in that, It includes a volute and a volute cover, and the volute and the volute cover are cooperatively connected to form a wind blade cavity; the wind blade cavity includes an upper wind blade cavity and a lower wind blade cavity arranged up and down; The upper wind blade cavity is formed with an upper wind blade cavity outlet, an upper communication port, and an upper wind blade cavity inlet, and the upper wind blade cavity inlet is formed between the upper wind blade cavity outlet and the upper communication port; A first upper wind blocking structure is movably arranged at the upper wind blade cavity outlet, and the first upper wind blocking structure can be controlled to open or close the upper wind blade cavity outlet; a second upper wind blocking structure is movably arranged at the upper communication port, and the second upper wind blocking structure can be controlled to open or close the upper communication port; The lower wind blade cavity is formed with a lower wind blade cavity outlet, a lower communication port, and a lower wind blade cavity inlet, and the lower wind blade cavity inlet is formed between the lower wind blade cavity outlet and the lower communication port; A first lower wind blocking structure is movably arranged at the lower wind blade cavity outlet, and the first lower wind blocking structure can be controlled to open or close the lower wind blade cavity outlet; a second lower wind blocking structure is movably arranged at the lower communication port, and the second lower wind blocking structure can be controlled to open or close the lower communication port.

2. The air duct device according to claim 1, wherein The air duct device further includes an upper wind blade and a lower wind blade, the upper wind blade is rotatably arranged in the upper wind blade cavity, and the lower wind blade is rotatably arranged in the lower wind blade cavity; the air duct device is provided with a conventional upper air outlet mode and a strong upper air outlet mode; The first upper wind blocking structure opens the upper wind blade cavity outlet, and the second upper wind blocking structure closes the upper communication port; By rotating the upper wind blade, the air duct device can operate in the conventional upper air outlet mode; The first upper wind blocking structure opens the upper wind blade cavity outlet, the second upper wind blocking structure opens the upper communication port, the first lower wind blocking structure closes the lower wind blade cavity outlet, and the second lower wind blocking structure opens the lower communication port; by rotating both the upper wind blade and the lower wind blade, the air duct device can operate in the strong upper air outlet mode; wherein, the rotation speed of the lower wind blade is greater than that of the upper wind blade.

3. The air duct device according to claim 2, wherein, The air duct device is further provided with a conventional lower air outlet mode and a strong lower air outlet mode; The first lower wind blocking structure opens the lower wind blade cavity outlet, and the second lower wind blocking structure closes the lower communication port; by rotating the lower wind blade, the air duct device can operate in the conventional lower air outlet mode; The first lower wind blocking structure opens the lower wind blade cavity outlet, the second lower wind blocking structure opens the lower communication port, the first upper wind blocking structure closes the upper wind blade cavity outlet, and the second upper wind blocking structure opens the upper communication port; by rotating both the upper wind blade and the lower wind blade, the air duct device can operate in the strong lower air outlet mode; wherein, the rotation speed of the upper wind blade is greater than that of the lower wind blade.

4. The air duct device according to claim 3, characterized in that, The air duct device is further provided with an upper and lower simultaneous air outlet mode; The first upper wind blocking structure opens the upper wind blade cavity outlet, the second upper wind blocking structure closes the upper communication port; the first lower wind blocking structure opens the lower wind blade cavity outlet, and the second lower wind blocking structure closes the lower communication port; by rotating both the upper wind blade and the lower wind blade, the air duct device can operate in the upper and lower simultaneous air outlet mode.

5. The air duct device according to any one of claims 1-4, characterized in that, The volute and the volute cover further form an upper air duct and a lower air duct. The upper air duct is arranged at the top of the upper air blade cavity and the upper air duct communicates with the outlet of the upper air blade cavity; the lower air duct is arranged at the bottom of the lower air blade cavity and the lower air duct communicates with the outlet of the lower air blade cavity.

6. A cabinet-type air conditioner indoor unit, characterized in that, It includes a housing and the air duct device described in claim 5; the housing encloses a housing cavity, an upper air inlet is formed in the upper part of the housing, a lower air inlet is formed in the lower part of the housing, and both the upper air inlet and the lower air inlet communicate with the interior; the air duct device is arranged in the housing cavity; The upper air duct communicates with the upper air inlet, and the lower air duct communicates with the lower air inlet; An air inlet cavity is formed between the housing and the air duct device. The upper air blade cavity inlet communicates with the upper air blade cavity and the air inlet cavity, and the lower air blade cavity inlet communicates with the lower air blade cavity and the air inlet cavity.

7. The cabinet type air conditioner indoor unit according to claim 6, characterized in that, The housing includes a housing left side wall and a housing right side wall which are arranged opposite to each other left and right; The cabinet-type air conditioner indoor unit further includes an indoor heat exchanger. The indoor heat exchanger is arranged in the air inlet cavity and includes a left heat exchanger and a right heat exchanger. The left heat exchanger is arranged between the housing left side wall and the air duct device, and the right heat exchanger is arranged between the housing right side wall and the air duct device.

8. The cabinet-type air conditioner indoor unit according to claim 7, characterized in that, The upper air blade cavity inlet includes an upper air blade cavity left inlet and an upper air blade cavity right inlet. The upper air blade cavity left inlet and the upper air blade cavity right inlet are respectively arranged close to the housing left side wall and the housing right side wall; the lower air blade cavity inlet includes a lower air blade cavity left inlet and a lower air blade cavity right inlet. The lower air blade cavity left inlet and the lower air blade cavity right inlet are respectively arranged close to the housing left side wall and the housing right side wall; The left heat exchanger includes a first left heat exchanger and a second left heat exchanger which are arranged opposite to each other up and down. The first left heat exchanger is arranged between the housing left side wall and the upper air blade cavity left inlet, and the second left heat exchanger is arranged between the housing left side wall and the lower air blade cavity left inlet; satisfying: 90°≤ɑ≤180°; The right heat exchanger includes a first right heat exchanger and a second right heat exchanger which are arranged opposite to each other up and down. The first right heat exchanger is arranged between the housing right side wall and the upper air blade cavity right inlet, and the second right heat exchanger is arranged between the housing right side wall and the lower air blade cavity right inlet; Satisfying: 90°≤β≤180°; Wherein, ɑ is the included angle between the heat exchange surfaces of the first left heat exchanger and the second left heat exchanger, and β is the included angle between the heat exchange surfaces of the first right heat exchanger and the second right heat exchanger.

9. A control method for an indoor unit of a cabinet air conditioner, characterized in that, The cabinet-type air conditioner indoor unit is the cabinet-type air conditioner indoor unit according to any one of claims 6-8; the control method includes: Determine the current air volume and the current operation mode of the cabinet-type air conditioner indoor unit; Judge whether the current air volume is greater than or equal to a preset air volume; Determine the target air outlet mode according to the judgment result of whether the current air volume is greater than or equal to the preset air volume and the current operation mode; Control the cabinet-type air conditioner indoor unit to operate the target air outlet mode; Wherein, the current operation mode includes a refrigeration mode and a heating mode, and the target air outlet mode includes a conventional upper air outlet mode, a strong upper air outlet mode, a conventional lower air outlet mode and a strong lower air outlet mode.

10. The control method of the cabinet air conditioner indoor unit according to claim 9, characterized in that, Determining the target air outlet mode according to the judgment result of whether the current air outlet volume is greater than or equal to the preset air outlet volume and the current operation mode includes: When the current air outlet volume is greater than or equal to the preset air outlet volume and the current operation mode is the cooling mode, determining the target air outlet mode as the conventional upper air outlet mode; When the current air outlet volume is less than the preset air outlet volume and the current operation mode is the cooling mode, determining the target air outlet mode as the strong upper air outlet mode.

11. The control method of the cabinet-type air conditioner indoor unit according to claim 9, characterized in that, Determining the target air outlet mode according to the judgment result of whether the current air outlet volume is greater than or equal to the preset air outlet volume and the current operation mode further includes: When the current air outlet volume is greater than or equal to the preset air outlet volume and the current operation mode is the heating mode, determining the target air outlet mode as the conventional lower air outlet mode; When the current air outlet volume is less than the preset air outlet volume and the current operation mode is the heating mode, determining the target air outlet mode as the strong lower air outlet mode.

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