A floor-standing air conditioner indoor unit

Abstract

The present invention provides a cabinet-type air conditioner indoor unit, which includes a housing and a fan assembly. The housing is formed with an air inlet. The housing encloses an installation cavity, and the fan assembly is arranged in the installation cavity and includes a volute and a volute cover arranged in sequence along the left-right direction of the housing. The volute and the volute cover are buckled together and form a sequentially connected upper air supply duct, an impeller cavity, and a lower air supply duct. The volute is formed with a first air supply inlet, and a first air inlet duct is formed between the first air supply inlet and the air inlet. The volute cover is formed with a second air supply inlet, and a second air inlet duct is formed between the second air supply inlet and the air inlet. A part of the indoor air enters the impeller cavity through the air inlet, the first air inlet duct, and the first air supply inlet. Another part of the indoor air enters the impeller cavity through the air inlet, the second air inlet duct, and the second air supply inlet. The air in the impeller cavity is supplied upward through the upper air supply duct and downward through the lower air supply duct. The air inlet flow path is short, the suction resistance of the fan is small and the noise is low, and the air intake volume is significantly increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of air treatment, and particularly relates to a cabinet-type air conditioner indoor unit. Background Art

[0002] In the existing cabinet-type air conditioner indoor unit, an air duct is formed inside the housing, and upper air outlets and lower air outlets communicating with the air duct are formed on the side wall of the housing. By blowing air upward, shower cooling is realized; by blowing air downward, carpet heating is realized, and the comfort is good; by using a single centrifugal fan to realize up and down air supply, the cost of the cabinet-type air conditioner can be reduced; however, the flow path between the air inlet of the housing and the air inlet of the fan is long, resulting in a large suction force at the air inlet of the housing, poor air suction effect at the air inlet of the fan, low fan efficiency. When increasing the air volume by increasing the fan speed, the increase in air volume is not obvious, and the noise of the fan is large. Summary of the Invention

[0003] In view of this, the present invention provides a cabinet-type air conditioner indoor unit to solve the problems of large air suction resistance, low efficiency, large noise and non-obvious increase in air volume at the air inlet of the fan in the existing cabinet-type air conditioner indoor unit.

[0004] The present invention provides a cabinet-type air conditioner indoor unit, including a housing, an indoor heat exchanger and a fan assembly. The housing includes a rear side wall, and an air inlet is formed on the rear side wall; the housing encloses an installation cavity, the indoor heat exchanger is arranged in the installation cavity and close to the air inlet, and the fan assembly is arranged in the installation cavity;

[0005] The fan assembly includes a volute and a volute cover arranged in sequence along the left-right direction of the housing. The volute and the volute cover are buckled together and form an upper air supply duct, a blade cavity and a lower air supply duct that are sequentially communicated along the up-down direction of the housing; a first air supply inlet is formed on the volute, a first air inlet duct is formed between the first air supply inlet and the air inlet, and the first air supply inlet communicates the first air inlet duct and the blade cavity; a second air supply inlet is formed on the volute cover, a second air inlet duct is formed between the second air supply inlet and the air inlet, and the second air supply inlet communicates the second air inlet duct and the blade cavity;

[0006] A part of the indoor air enters the blade cavity through the air inlet, the first air inlet duct and the first air supply inlet; another part of the indoor air enters the blade cavity through the air inlet, the second air inlet duct and the second air supply inlet; the air in the blade cavity is sent upward through the upper air supply duct and sent downward through the lower air supply duct.

[0007] Further optionally, the cabinet-type air conditioner indoor unit further includes a wind guide housing, which includes a first wind guide housing and a second wind guide housing; the first wind guide housing is disposed in the first air inlet duct, so that the air in the first air inlet duct can enter the impeller cavity through the first wind guide housing and the first air supply inlet;

[0008] The second wind guide housing is disposed in the second air inlet duct, so that the air in the second air inlet duct can enter the impeller cavity through the second wind guide housing and the second air supply inlet.

[0009] Further optionally, the housing includes a left side wall and a right side wall; one end of the first wind guide housing is disposed on the left side wall, the other end of the first wind guide housing extends toward the first air supply inlet, and the other end of the first wind guide housing covers the outside of the first air supply inlet;

[0010] One end of the second wind guide housing is disposed on the right side wall, the other end of the second wind guide housing extends toward the second air supply inlet, and the other end of the second wind guide housing covers the outside of the second air supply inlet.

[0011] Further optionally, along the flowing direction of the air in the first air inlet duct, the first wind guide housing forms a first flow guiding structure for gathering the wind from the air inlet toward the first air supply inlet;

[0012] Along the flowing direction of the air in the second air inlet duct, the second wind guide housing forms a second flow guiding structure for gathering the wind from the air inlet toward the second air supply inlet.

[0013] Further optionally, along the flowing direction of the air in the first air inlet duct, the first wind guide housing includes a first wind guide section, a second wind guide section and a third wind guide section which are connected in sequence; the extending direction of the first wind guide section is consistent with the extending direction of the left side wall, the structure of the third wind guide section is adapted to the structure of one side wall of the impeller cavity and covers the outside of the first air supply inlet; the second wind guide section connects the first wind guide section and the third wind guide section, and the second wind guide section is a curved surface structure;

[0014] Along the flowing direction of the air in the second air inlet duct, the second wind guide housing includes a fourth wind guide section, a fifth wind guide section and a sixth wind guide section which are connected in sequence; the extending direction of the fourth wind guide section is consistent with the extending direction of the right side wall, the structure of the sixth wind guide section is adapted to the structure of the other side wall of the impeller cavity and covers the outside of the second air supply inlet; the fifth wind guide section connects the fourth wind guide section and the sixth wind guide section, and the fifth wind guide section is a curved surface structure.

[0015] Further optionally, the fan assembly further includes an upper wind deflector and a lower wind deflector. The upper wind deflector is rotatably disposed in the upper air duct, and the upper wind deflector can open or close the upper air duct.

[0016] The lower wind deflector is rotatably disposed in the lower air duct, and the lower wind deflector can open or close the lower air duct.

[0017] Further optionally, the upper wind deflector is disposed close to the blade cavity, and the upper wind deflector is a circular arc structure with the same diameter as the blade cavity. When the upper wind deflector is coaxially disposed with the blade cavity, the upper wind deflector can close the upper air duct.

[0018] The lower wind deflector is disposed close to the blade cavity, and the lower wind deflector is a circular arc structure with the same diameter as the blade cavity. When the lower wind deflector is coaxially disposed with the blade cavity, the lower wind deflector can close the lower air duct.

[0019] Further optionally, the blade cavity includes a first blade cavity outlet and a second blade cavity outlet. The first blade cavity outlet communicates the blade cavity with the upper air duct, and the second blade cavity outlet communicates the blade cavity with the lower air duct.

[0020] The fan assembly further includes an upper wind deflector and a lower wind deflector. The upper wind deflector is slidably disposed at the first blade cavity outlet, and the upper wind deflector can open or close the first blade cavity outlet.

[0021] The lower wind deflector is slidably disposed at the second blade cavity outlet, and the lower wind deflector can open or close the second blade cavity outlet.

[0022] Further optionally, both the upper wind deflector and the lower wind deflector are circular arc structures coaxially disposed with the blade cavity.

[0023] The volute and the volute cover form a first chute and a second chute, and both the first chute and the second chute are circular arc structures coaxially disposed with the blade cavity.

[0024] The upper wind deflector is slidably disposed in the first chute, and when the upper wind deflector slides along the first chute, it can open or close the first blade cavity outlet. The lower wind deflector is slidably disposed in the second chute, and when the lower wind deflector slides along the second chute, it can open or close the second blade cavity outlet.

[0025] Further optionally, the fan assembly further includes a first blade and a second blade; the first blade and the second blade are arranged in parallel and rotatably in the blade cavity, the first blade is arranged close to the first air supply inlet, and the second blade is arranged close to the second air supply inlet; the first blade and the second blade can rotate independently or synchronously;

[0026] When the first blade rotates, the air in the first air inlet duct enters the blade cavity through the first air supply inlet; when the second blade rotates, the air in the second air inlet duct enters the blade cavity through the second air supply inlet.

[0027] Compared with the prior art, the beneficial effects of the present invention mainly lie in:

[0028] (1) The volute and the volute cover are arranged in sequence along the left - right direction of the housing. The volute and the volute cover are buckled together and form an upper air supply duct, a blade cavity and a lower air supply duct that are sequentially communicated along the up - down direction of the housing; a part of the indoor air enters the blade cavity through the air inlet, the first air inlet duct and the first air supply inlet; another part of the indoor air enters the blade cavity through the air inlet, the second air inlet duct and the second air supply inlet; the air in the blade cavity is supplied upward through the upper air supply duct and downward through the lower air supply duct; the flow paths between the air inlet and the first air supply inlet and between the air inlet and the second air supply inlet are both short, the air suction resistance of the fan is small, the efficiency is high and the noise is low. When the fan speed is increased, the air intake volume increases significantly; through air intake from both left and right sides, the air intake is uniform and smooth; the structure is simple, the occupied space is small, and the assembly efficiency is high;

[0029] (2) The first air guide housing is arranged in the first air inlet duct, and the air in the first air inlet duct can be gathered towards the first air supply inlet through the first air guide housing; the second air guide housing is arranged in the second air inlet duct, and the air in the second air inlet duct can be gathered towards the second air supply inlet through the second air guide housing; the air intake resistance and the air intake noise are reduced, the air intake speed and the air intake volume are ensured, and the adjustable range of the air intake volume is expanded;

[0030] (3) The upper wind baffle is rotatably arranged in the upper air supply duct, and the lower wind baffle is rotatably arranged in the lower air supply duct. Both the upper wind baffle and the lower wind baffle are arc - shaped structures with the same diameter as the blade cavity; when the upper wind baffle is coaxially arranged with the blade cavity, the upper wind baffle can close the upper air supply duct, so that the air in the blade cavity can smoothly enter the lower air supply duct; when the lower wind baffle is coaxially arranged with the blade cavity, the lower wind baffle can close the lower air supply duct, so that the air in the blade cavity can smoothly enter the upper air supply duct. Description of the Drawings

[0031] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained by extending the provided drawings.

[0032] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0033] Figure 1 Schematic assembly structure diagram of the fan assembly embodiment provided by the present invention;

[0034] Figure 2a and Figure 2b Schematic exploded structure diagram of the fan assembly embodiment provided by the present invention;

[0035] Figure 3a 、 Figure 3b 、 Figure 3c and Figure 3d Schematic assembly structure diagram of the cabinet air conditioner indoor unit embodiment provided by the present invention;

[0036] Figure 4a Schematic structure diagram of the cabinet air conditioner indoor unit embodiment when blowing air upward provided by the present invention;

[0037] Figure 4b Schematic structure diagram of the cabinet air conditioner indoor unit embodiment when blowing air simultaneously upward and downward provided by the present invention;

[0038] In the figure:

[0039] 1 - Housing; 11 - Front side wall; 12 - Rear side wall; 121 - Air inlet; 13 - Left side wall; 14 - Right side wall; 151 - First air inlet duct; 152 - Second air inlet duct;

[0040] 2 - Fan assembly; 21 - Volute; 211 - First air supply inlet; 22 - Volute cover; 221 - Second air supply inlet; 231 - Upper air supply duct; 232 - Lower air supply duct; 233 - Blade cavity; 241 - First blade; 242 - Second blade; 25 - Blade motor;

[0041] 31 - First air deflector housing; 32 - Second air deflector housing;

[0042] 41 - Lower wind deflector; 42 - Wind deflector motor; 43 - Indoor heat exchanger. Detailed implementation manners

[0043] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0044] 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.

[0045] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0046] It should also be noted that the terms "include", "comprise" or any other variant thereof are 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 also includes elements inherent to such a commodity or system. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0047] In the existing cabinet air conditioner indoor unit, a single centrifugal fan is used to achieve up and down air outlet, which can reduce the cost of the cabinet air conditioner; however, the flow path between the air inlet of the housing and the air inlet of the fan is relatively long, resulting in a large suction force at the air inlet of the housing, poor air suction effect at the air inlet of the fan, low fan efficiency. When increasing the air volume by increasing the fan speed, the increase in air volume is not obvious, and the noise of the fan is relatively large;

[0048] The present invention creatively provides a cabinet-type air conditioner indoor unit, which includes a housing and a fan assembly. The housing includes a rear side wall, and an air inlet is formed on the rear side wall. The housing encloses an installation cavity, and the fan assembly is arranged in the installation cavity. The fan assembly includes a volute and a volute cover arranged in sequence along the left-right direction of the housing. The volute and the volute cover are buckled together to form an upper air duct, an impeller chamber, and a lower air duct that are sequentially communicated along the up-down direction of the housing. The volute forms a first air supply inlet, and a first air inlet duct is formed between the first air supply inlet and the air inlet. The first air supply inlet communicates the first air inlet duct with the impeller chamber. The volute cover forms a second air supply inlet, and a second air inlet duct is formed between the second air supply inlet and the air inlet. The second air supply inlet communicates the second air inlet duct with the impeller chamber.

[0049] A part of the indoor air enters the impeller chamber through the air inlet, the first air inlet duct, and the first air supply inlet; another part of the indoor air enters the impeller chamber through the air inlet, the second air inlet duct, and the second air supply inlet. The air in the impeller chamber is sent upward through the upper air duct and downward through the lower air duct.

[0050] The flow paths between the air inlet and the first air supply inlet and between the air inlet and the second air supply inlet are both short. The air suction resistance of the fan is small, the efficiency is high, and the noise is low. When the fan speed is increased, the air intake volume increases significantly. By introducing air from both the left and right sides, the air intake is uniform and smooth. The structure is simple, the occupied space is small, and the assembly efficiency is high.

[0051] Embodiment 1

[0052] As Figure 1 、 Figure 2a 、 Figure 2b and Figure 3a shown, this embodiment provides a cabinet-type air conditioner indoor unit, which includes a housing 1, an indoor heat exchanger 43, and a fan assembly 2. The housing 1 includes a front side wall 11, a left side wall 13, a right side wall 14, and a rear side wall 12. The front side wall 11 forms an upper air outlet and a lower air outlet. The upper air outlet is located on the upper side, and the lower air outlet is located on the lower side. The rear side wall 12 forms an air inlet 121. The four side walls of the housing 1 enclose an installation cavity. The indoor heat exchanger 43 is arranged in the installation cavity and is close to the air inlet 121. The fan assembly 2 is arranged in the installation cavity and is located at the air outlet end of the indoor heat exchanger 43.

[0053] The fan assembly 2 includes a volute 21 and a volute cover 22 arranged in sequence along the left-right direction of the housing 1. The volute 21 and the volute cover 22 are buckled together to form an upper air duct 231, an impeller chamber 233, and a lower air duct 232. The upper air duct 231, the impeller chamber 233, and the lower air duct 232 are arranged in sequence along the up-down direction of the housing 1. The air inlet end of the upper air duct 231 communicates with the impeller chamber 233, and the air inlet end of the lower air duct 232 communicates with the impeller chamber 233. The air outlet end of the upper air duct 231 communicates with the upper air outlet, and the air outlet end of the lower air duct 232 communicates with the lower air outlet.

[0054] The volute 21 is formed with a first air supply inlet 211. A first air inlet duct 151 is formed between the first air supply inlet 211 and the air inlet 121, and the first air supply inlet 211 communicates with the first air inlet duct 151 and the impeller chamber 233; the volute cover 22 is formed with a second air supply inlet 221. A second air inlet duct 152 is formed between the second air supply inlet 221 and the air inlet 121, and the second air supply inlet 221 communicates with the second air inlet duct 152 and the impeller chamber 233;

[0055] The flow path between the air inlet 121 and the first air supply inlet 211 is short. A part of the indoor air smoothly enters the impeller chamber 233 through the air inlet 121, the first air inlet duct 151 and the first air supply inlet 211; the flow path between the air inlet 121 and the second air supply inlet 221 is short. Another part of the indoor air smoothly enters the impeller chamber 233 through the air inlet 121, the second air inlet duct 152 and the second air supply inlet 221; the air inlet resistance is small, avoiding the phenomenon of air eddy, reducing the loss of air intake; when the fan speed is increased, the air intake increases significantly; through the air intake on both left and right sides, the air intake is uniform and smooth; the air in the impeller chamber 233 is sent upward through the upper air supply duct 231 and sent downward through the lower air supply duct 232, which can meet different air supply requirements; the structure is simple, occupying a small space and having high assembly efficiency.

[0056] Furthermore, the fan assembly 2 further includes a first impeller 241 and a second impeller 242; the first impeller 241 and the second impeller 242 are arranged side by side left and right, and the first impeller 241 and the second impeller 242 are rotatably arranged in the impeller chamber 233. The first impeller 241 is arranged close to the first air supply inlet 211, and the second impeller 242 is arranged close to the second air supply inlet 221; the first impeller 241 and the second impeller 242 can rotate independently or synchronously;

[0057] When the first impeller 241 rotates, the air in the first air inlet duct 151 enters the impeller chamber 233 through the first air supply inlet 211; when the second impeller 242 rotates, the air in the second air inlet duct 152 enters the impeller chamber 233 through the second air supply inlet 221; the normal temperature air becomes hot and cold air after passing through the indoor heat exchanger 43, and then through the pressurizing effect of the first impeller 241 and the second impeller 242, upward air supply or downward air supply or simultaneous upward and downward air supply is realized; the fan has high efficiency, large air volume and low noise.

[0058] The fan assembly 2 further includes an impeller motor 25. The output shaft of the impeller motor 25 is drivingly connected to both the first impeller 241 and the second impeller 242; when the impeller motor 25 operates, the first impeller 241 and the second impeller 242 can rotate synchronously, and thus the first air supply inlet 211 and the second air supply inlet 221 can intake air simultaneously.

[0059] Such asFigure 3a , Figure 3b , Figure 3c and Figure 3d As shown in Figure 3a , Figure 3b , Figure 3c and Figure 3d , in view of the problem that the large air inlet resistance in the first air inlet duct 151 and the second air inlet duct 152 causes air inlet volume loss, this embodiment proposes that the cabinet-type air conditioner indoor unit further includes a wind guide housing, and the wind guide housing includes a first wind guide housing 31 and a second wind guide housing 32; the first wind guide housing 31 is disposed in the first air inlet duct 151, so that the air in the first air inlet duct 151 can enter the wind blade cavity 233 through the first wind guide housing 31 and the first air supply inlet 211;

[0060] The second wind guide housing 32 is disposed in the second air inlet duct 152, so that the air in the second air inlet duct 152 can enter the wind blade cavity 233 through the second wind guide housing 32 and the second air supply inlet 221.

[0061] Further, one end of the first wind guide housing 31 is disposed on the left side wall 13, the other end of the first wind guide housing 31 extends toward the first air supply inlet 211, and the other end of the first wind guide housing 31 covers the outside of the first air supply inlet 211;

[0062] One end of the second wind guide housing 32 is disposed on the right side wall 14, the other end of the second wind guide housing 32 extends toward the second air supply inlet 221, and the other end of the second wind guide housing 32 covers the outside of the second air supply inlet 221.

[0063] The inner surface of the front side part of the first wind guide housing 31 is located outside the outer surface of the left side part of the indoor heat exchanger 43, and the inner surface of the front side part of the second wind guide housing 32 is located outside the outer surface of the right side part of the indoor heat exchanger 43.

[0064] In view of the problem that the air guiding effects of the first wind guide housing 31 and the second wind guide housing 32 are not obvious, this embodiment proposes that along the air flow direction in the first air inlet duct 151, the first wind guide housing 31 forms a first air guiding structure for gathering air from the air inlet 121 toward the first air supply inlet 211;

[0065] Along the air flow direction in the second air inlet duct 152, the second wind guide housing 32 forms a second air guiding structure for gathering air from the air inlet 121 toward the second air supply inlet 221;

[0066] The air inlet resistance and the air inlet noise are reduced, the air inlet speed and the air inlet volume are ensured, and the adjustable range of the air inlet volume is expanded.

[0067] Further, along the air flow direction in the first air inlet duct 151, the first air guide housing 31 includes a first air guide section, a second air guide section, and a third air guide section that are connected in sequence; the extending direction of the first air guide section is the same as the extending direction of the left side wall 13, and the structure of the third air guide section is adapted to the structure of one side wall of the air blade cavity 233 and covers the outside of the first air supply inlet 211; the second air guide section connects the first air guide section and the third air guide section, and the second air guide section is a curved surface structure; the second air guide section enables a smooth transition between the first air guide section and the third air guide section. When the air passes through the first air guide housing 31, the air speed and direction can be continuously changed, and the air is guided to the first air supply inlet 211, preventing the formation of stagnant air in the first air inlet duct 151;

[0068] Along the air flow direction in the second air inlet duct 152, the second air guide housing 32 includes a fourth air guide section, a fifth air guide section, and a sixth air guide section that are connected in sequence; the extending direction of the fourth air guide section is the same as the extending direction of the right side wall 14, and the structure of the sixth air guide section is adapted to the structure of the other side wall of the air blade cavity 233 and covers the outside of the second air supply inlet 221; the fifth air guide section connects the fourth air guide section and the sixth air guide section, and the fifth air guide section is a curved surface structure; the fifth air guide section enables a smooth transition between the fourth air guide section and the sixth air guide section. When the air passes through the second air guide housing 32, the air speed and direction can be continuously changed, and the air is guided to the second air supply inlet 221, preventing the formation of stagnant air in the second air inlet duct 152.

[0069] To address the problem that upward or downward air supply cannot be achieved according to actual needs, in this embodiment, the fan assembly 2 further includes an upper wind deflector and a lower wind deflector 41. The upper wind deflector is rotatably arranged in the upper air supply duct 231 and can open or close the upper air supply duct 231; the lower wind deflector 41 is drivingly connected to the wind deflector motor 42, and when the wind deflector motor 42 operates, the lower wind deflector 41 can rotate;

[0070] The lower wind deflector 41 is rotatably arranged in the lower air supply duct 232 and can open or close the lower air supply duct 232;

[0071] As Figure 4a shown, when the air conditioner needs to cool, the upper wind deflector is opened to open the upper air supply duct 231, and the lower wind deflector 41 closes the lower air supply duct 232. The normal temperature air in the room enters the installation cavity through the air inlet 121 and the indoor heat exchanger 43 and becomes cold air. A part of the cold air enters the air blade cavity 233 through the first air inlet duct 151 and the first air supply inlet 211, and another part of the cold air enters the air blade cavity 233 through the second air inlet duct 152 and the second air supply inlet 221. The cold air in the air blade cavity 233 is discharged through the upper air supply duct 231 and the upper air outlet, achieving upward air supply and realizing shower cooling;

[0072] When the air conditioner needs to provide heating, the upper wind deflector closes the upper air duct 231, and the lower wind deflector 41 opens the lower air duct 232. The normal-temperature air in the room enters the installation cavity through the air inlet 121 and the indoor heat exchanger 43 and becomes hot air. A part of the hot air enters the impeller cavity 233 through the first air duct 151 and the first air supply inlet 211, and another part of the hot air enters the impeller cavity 233 through the second air duct 152 and the second air supply inlet 221. The hot air in the impeller cavity 233 is discharged through the lower air duct 232 and the lower air outlet, realizing downward air supply.

[0073] Or, as Figure 4b shown, when the air conditioner needs to provide heating, the upper wind deflector opens the upper air duct 231, and the lower wind deflector 41 opens the lower air duct 232. The normal-temperature air in the room enters the installation cavity through the air inlet 121 and the indoor heat exchanger 43 and becomes hot air. A part of the hot air enters the impeller cavity 233 through the first air duct 151 and the first air supply inlet 211, and another part of the hot air enters the impeller cavity 233 through the second air duct 152 and the second air supply inlet 221. A part of the hot air in the impeller cavity 233 is discharged upward through the upper air duct 231 and the upper air outlet, and another part of the hot air in the impeller cavity 233 is discharged downward through the lower air duct 232 and the lower air outlet, realizing simultaneous upward and downward air supply and achieving carpet-style heating.

[0074] Furthermore, the upper wind deflector is arranged close to the impeller cavity 233, and the upper wind deflector is a circular arc structure with the same diameter as the impeller cavity 233; when the upper wind deflector is coaxially arranged with the impeller cavity 233, the upper wind deflector can close the upper air duct 231 and there is a smooth transition between the upper wind deflector and the side wall of the impeller cavity 233, reducing the air supply resistance during downward air supply and ensuring the air supply volume.

[0075] The lower wind deflector 41 is arranged close to the impeller cavity 233, and the lower wind deflector 41 is a circular arc structure with the same diameter as the impeller cavity 233; when the lower wind deflector 41 is coaxially arranged with the impeller cavity 233, the lower wind deflector 41 can close the lower air duct 232 and there is a smooth transition between the lower wind deflector 41 and the side wall of the impeller cavity 233, reducing the air supply resistance during upward air supply and ensuring the air supply volume.

[0076] The assembly process of the cabinet-type air conditioner indoor unit is as follows:

[0077] The impeller motor 25, the first impeller 241 and the second impeller 242 are arranged side by side left and right on the volute 21.

[0078] The volute cover 22 is fixed to the volute 21; the wind deflector is fixed to the volute cover 22.

[0079] The volute 21 and the volute cover 22 are assembled in the installation cavity of the housing 1 in a side-by-side manner.

[0080] The first air guide housing 31 is arranged in the first air inlet duct 151, and the second air guide housing 32 is arranged in the second air inlet duct 152.

[0081] Embodiment 2

[0082] Different from Embodiment 1, the impeller cavity 233 includes a first impeller cavity outlet and a second impeller cavity outlet; the first impeller cavity outlet communicates with the impeller cavity 233 and the upper air supply duct 231, and the second impeller cavity outlet communicates with the impeller cavity 233 and the lower air supply duct 232;

[0083] The fan assembly 2 further includes an upper wind baffle and a lower wind baffle 41. The upper wind baffle is slidably arranged at the first impeller cavity outlet, and the upper wind baffle can open or close the first impeller cavity outlet;

[0084] The lower wind baffle 41 is slidably arranged at the second impeller cavity outlet, and the lower wind baffle 41 can open or close the second impeller cavity outlet;

[0085] When upward air supply is required, the upper wind baffle is opened to the upper air supply duct 231, and the lower wind baffle 41 closes the lower air supply duct 232. The air in the impeller cavity 233 is discharged through the upper air supply duct 231 and the upper air outlet; when downward air supply is required, the upper wind baffle closes the upper air supply duct 231, and the lower wind baffle 41 opens the lower air supply duct 232. The air in the impeller cavity 233 is discharged through the lower air supply duct 232 and the lower air outlet; when upward and downward air supply is required simultaneously, the upper wind baffle is opened to the upper air supply duct 231, and the lower wind baffle 41 is opened to the lower air supply duct 232. A part of the air in the impeller cavity 233 is discharged upward through the upper air supply duct 231 and the upper air outlet, and another part of the air in the impeller cavity 233 is discharged downward through the lower air supply duct 232 and the lower air outlet.

[0086] Furthermore, both the upper wind baffle and the lower wind baffle 41 are arc-shaped structures coaxially arranged with the impeller cavity 233; the radius of the upper wind baffle and the radius of the lower wind baffle 41 are both slightly smaller than the radius of the side wall of the impeller cavity 233;

[0087] The volute 21 and the volute cover 22 form a first chute and a second chute. Both the first chute and the second chute are arc-shaped structures coaxially arranged with the impeller cavity 233; the radius of the first chute and the radius of the second chute are both slightly smaller than the radius of the side wall of the impeller cavity 233;

[0088] The structure of the upper wind baffle is adapted to the structure of the first chute. The upper wind baffle is slidably arranged in the first chute, and the upper wind baffle slides along the first chute to open or close the first impeller cavity outlet; the structure of the lower wind baffle 41 is adapted to the structure of the second chute. The lower wind baffle 41 is slidably arranged in the second chute, and the lower wind baffle 41 slides along the second chute to open or close the second impeller cavity outlet;

[0089] The upper wind deflector and the lower wind deflector 41 have a simple structure, occupy a small space, are adapted to the structure of the wind blade cavity 233, reduce the air supply resistance, and ensure the air supply volume.

[0090] The exemplary embodiments of the present disclosure have been specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, arrangements, or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A floor-standing air conditioner indoor unit, characterized in that, It includes a housing (1), an indoor heat exchanger (43) and a fan assembly (2). The housing (1) includes a rear side wall (12), and an air inlet (121) is formed on the rear side wall (12); the housing (1) encloses an installation cavity, the indoor heat exchanger (43) is arranged in the installation cavity and close to the air inlet (121), and the fan assembly (2) is arranged in the installation cavity; The fan assembly (2) includes a volute (21) and a volute cover (22) arranged in sequence along the left-right direction of the housing (1). The volute (21) and the volute cover (22) are cooperatively connected and form an upper air duct (231), a blade cavity (233) and a lower air duct (232) that are sequentially communicated along the up-down direction of the housing (1); the volute (21) forms a first air supply inlet (211), and the first air supply inlet (211) is located on the axial left side of the blade cavity (233); a first air inlet duct (151) is formed between the first air supply inlet (211) and the air inlet (121), and the first air supply inlet (211) communicates the first air inlet duct (151) and the blade cavity (233); the volute cover (22) forms a second air supply inlet (221), and the second air supply inlet (221) is located on the axial right side of the blade cavity (233); a second air inlet duct (152) is formed between the second air supply inlet (221) and the air inlet (121), and the second air supply inlet (221) communicates the second air inlet duct (152) and the blade cavity (233); A part of the indoor air enters the blade cavity (233) through the air inlet (121), the first air inlet duct (151) and the first air supply inlet (211); another part of the indoor air enters the blade cavity (233) through the air inlet (121), the second air inlet duct (152) and the second air supply inlet (221); the air in the blade cavity (233) is supplied upward through the upper air duct (231) and downward through the lower air duct (232).

2. The floor-standing air conditioner indoor unit according to claim 1, characterized in that, The cabinet-type air conditioner indoor unit further includes a wind guide housing, and the wind guide housing includes a first wind guide housing (31) and a second wind guide housing (32); the first wind guide housing (31) is arranged in the first air inlet duct (151) so that the air in the first air inlet duct (151) can enter the blade cavity (233) through the first wind guide housing (31) and the first air supply inlet (211); The second wind guide housing (32) is arranged in the second air inlet duct (152) so that the air in the second air inlet duct (152) can enter the blade cavity (233) through the second wind guide housing (32) and the second air supply inlet (221).

3. The floor-standing air conditioner indoor unit according to claim 2, characterized in that, The housing (1) includes a left side wall (13) and a right side wall (14); one end of the first wind guide housing (31) is arranged on the left side wall (13), the other end of the first wind guide housing (31) extends towards the first air supply inlet (211), and the other end of the first wind guide housing (31) covers the outside of the first air supply inlet (211); One end of the second air guide housing (32) is disposed on the right side wall (14), and the other end of the second air guide housing (32) extends toward the second air supply inlet (221), and the other end of the second air guide housing (32) covers the outside of the second air supply inlet (221).

4. The floor-standing air conditioner indoor unit according to claim 3, characterized in that, Along the air flow direction in the first air inlet duct (151), the first air guide housing (31) forms a first air guiding structure for guiding the air from the air inlet (121) toward the first air supply inlet (211). Along the air flow direction in the second air inlet duct (152), the second air guide housing (32) forms a second air guiding structure for guiding the air from the air inlet (121) toward the second air supply inlet (221).

5. The floor-standing air conditioner indoor unit according to claim 3, characterized in that, Along the air flow direction in the first air inlet duct (151), the first air guide housing (31) includes a first air guide section, a second air guide section, and a third air guide section connected in sequence; the extending direction of the first air guide section is the same as the extending direction of the left side wall (13), the structure of the third air guide section is adapted to the structure of one side wall of the air blade cavity (233) and covers the outside of the first air supply inlet (211); the second air guide section connects the first air guide section and the third air guide section, and the second air guide section is a curved surface structure. Along the air flow direction in the second air inlet duct (152), the second air guide housing (32) includes a fourth air guide section, a fifth air guide section, and a sixth air guide section connected in sequence; the extending direction of the fourth air guide section is the same as the extending direction of the right side wall (14), the structure of the sixth air guide section is adapted to the structure of the other side wall of the air blade cavity (233) and covers the outside of the second air supply inlet (221); the fifth air guide section connects the fourth air guide section and the sixth air guide section, and the fifth air guide section is a curved surface structure.

6. The floor-standing air conditioner indoor unit according to claim 1, characterized in that, The fan assembly (2) further includes an upper wind baffle and a lower wind baffle (41), the upper wind baffle is rotatably disposed in the upper air supply duct (231), and the upper wind baffle can open or close the upper air supply duct (231). The lower wind baffle (41) is rotatably disposed in the lower air supply duct (232), and the lower wind baffle (41) can open or close the lower air supply duct (232).

7. The floor-standing air conditioner indoor unit according to claim 6, characterized in that, The upper wind baffle is disposed close to the air blade cavity (233), and the upper wind baffle is a circular arc structure having the same diameter as the air blade cavity (233); when the upper wind baffle is coaxially disposed with the air blade cavity (233), the upper wind baffle can close the upper air supply duct (231). The lower wind baffle (41) is disposed close to the air blade cavity (233), and the lower wind baffle (41) is a circular arc structure having the same diameter as the air blade cavity (233); when the lower wind baffle (41) is coaxially disposed with the air blade cavity (233), the lower wind baffle (41) can close the lower air supply duct (232).

8. The floor-standing air conditioner indoor unit according to claim 1, characterized in that, The wind blade cavity (233) includes a first wind blade cavity outlet and a second wind blade cavity outlet; the first wind blade cavity outlet communicates the wind blade cavity (233) with the upper air supply duct (231), and the second wind blade cavity outlet communicates the wind blade cavity (233) with the lower air supply duct (232); The fan assembly (2) further includes an upper wind baffle and a lower wind baffle (41), the upper wind baffle is slidably arranged at the first wind blade cavity outlet, and the upper wind baffle can open or close the first wind blade cavity outlet; The lower wind baffle (41) is slidably arranged at the second wind blade cavity outlet, and the lower wind baffle (41) can open or close the second wind blade cavity outlet.

9. The floor-standing air conditioner indoor unit according to claim 8, characterized in that, Both the upper wind baffle and the lower wind baffle (41) are arc-shaped structures coaxially arranged with the wind blade cavity (233); The volute (21) and the volute cover (22) form a first sliding groove and a second sliding groove, and both the first sliding groove and the second sliding groove are arc-shaped structures coaxially arranged with the wind blade cavity (233); The upper wind baffle is slidably arranged in the first sliding groove, and the upper wind baffle slides along the first sliding groove to open or close the first wind blade cavity outlet; the lower wind baffle (41) is slidably arranged in the second sliding groove, and the lower wind baffle (41) slides along the second sliding groove to open or close the second wind blade cavity outlet.

10. The floor-standing air conditioner indoor unit according to claim 1, characterized in that, The fan assembly (2) further includes a first wind blade (241) and a second wind blade (242); the first wind blade (241) and the second wind blade (242) are arranged in parallel and rotatably arranged in the wind blade cavity (233), the first wind blade (241) is close to the first air supply inlet (211), and the second wind blade (242) is close to the second air supply inlet (221); the first wind blade (241) and the second wind blade (242) can rotate independently or synchronously; The rotation axes of the first wind blade (241) and the second wind blade (242) are perpendicular to the height direction of the housing; When the first wind blade (241) rotates, the wind in the first air inlet duct (151) enters the wind blade cavity (233) through the first air supply inlet (211); when the second wind blade (242) rotates, the wind in the second air inlet duct (152) enters the wind blade cavity (233) through the second air supply inlet (221).

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