Cabinet type air conditioner indoor unit

Abstract

The cabinet type air conditioner indoor unit comprises a shell and an air duct assembly, a shell cavity is defined by the shell, a lower air opening is formed in the lower portion of the shell, and an upper air opening is formed in the upper portion of the shell; the air duct assembly is arranged in the shell cavity, and an upper air duct, an upper fan blade cavity, a lower fan blade cavity and a lower air duct are formed in the air duct assembly; an air port A1 is formed in the upper end of the upper fan blade cavity, and an air port B1 is formed in the lower end; an air port A2 is formed in the lower end of the lower fan blade cavity, and an air port B2 is formed in the upper end; when the cabinet type air conditioner indoor unit is in an upper air outlet mode, the upper fan blade rotates, and indoor air enters the lower air flue through the lower air opening, then sequentially flows through the air opening A2, the air opening B2, the air opening B1 and the air opening A1 to enter the upper air flue and is exhausted through the upper air opening. When the cabinet type air conditioner indoor unit is in a lower air outlet mode, the lower fan blades rotate, and indoor air enters the upper air flue through the upper air opening, then sequentially flows through the air opening A1, the air opening B1, the air opening B2 and the air opening A2 to enter the lower air flue and then is exhausted through the lower air opening.

Description

Technical Field

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

[0002] In existing floor-standing air conditioners, when the air conditioner operates in the upper air outlet mode, the upper baffle opens the upper outlet of the air blade cavity, and the lower baffle closes the lower outlet of the air blade cavity. Air enters the air blade cavity through the air blade cavity inlet, and then is discharged through the upper outlet of the air blade cavity, the upper air duct and the upper outlet in sequence to achieve upper air outlet; when the air conditioner operates in the lower air outlet mode, the upper baffle closes the upper outlet of the air blade cavity, and the lower baffle opens the lower outlet of the air blade cavity, and then is discharged through the lower outlet of the air blade cavity, the lower air duct and the lower outlet in sequence to achieve lower air outlet; that is, when the air conditioner switches between the upper air outlet mode and the lower air outlet mode, the required component structure is complex, the control process is cumbersome, and the distances between the upper air outlet and the lower air outlet and the air inlet are relatively close, resulting in a narrow airflow range and a slow change in the temperature of the indoor air. Summary of the Invention

[0003] In view of this, the present invention provides a floor-standing air conditioner indoor unit to solve the problems such as the complex structure of the required components, the narrow airflow range, and the slow change in the temperature of the indoor air when the existing floor-standing air conditioner switches between the upper air outlet mode and the lower air outlet mode.

[0004] The present invention provides a floor-standing air conditioner indoor unit, including a housing and an air duct assembly. The housing encloses a housing cavity, and an upper air outlet is formed in the upper part of the housing, and a lower air outlet is formed in the lower part of the housing;

[0005] The air duct assembly is arranged in the housing cavity, and the air duct assembly forms an upper air duct, an upper air blade cavity, a lower air blade cavity and a lower air duct which are arranged in sequence from top to bottom; an upper air blade is rotatably arranged in the upper air blade cavity, and the upper air blade cavity forms an A1 air outlet and a B1 air outlet; a lower air blade is rotatably arranged in the lower air blade cavity, and the lower air blade cavity forms an A2 air outlet and a B2 air outlet; the upper air duct communicates with the upper air outlet and the A1 air outlet; the lower air duct communicates with the lower air outlet and the A2 air outlet;

[0006] A transition cavity is formed between the housing and the air duct assembly; the B1 air outlet communicates with the upper air blade cavity and the transition cavity, and the B2 air outlet communicates with the lower air blade cavity and the transition cavity;

[0007] The floor-standing air conditioner indoor unit is provided with an upper air outlet mode and a lower air outlet mode. When the floor-standing air conditioner indoor unit is in the upper air outlet mode, the upper air blade rotates, so that indoor air enters the lower air duct through the lower air outlet, and then is discharged through the upper air outlet; when the floor-standing air conditioner indoor unit is in the lower air outlet mode, the lower air blade rotates, so that indoor air enters the upper air duct through the upper air outlet, and then is discharged through the lower air outlet.

[0008] Further optionally, the air duct assembly further includes a transition air housing, which is disposed around the B1 air outlet and the B2 air outlet and forms the transition cavity; the transition cavity communicates with the B1 air outlet and the B2 air outlet;

[0009] When the upper air blade rotates and the lower air blade does not rotate, the air in the lower air blade cavity can enter the transition cavity through the B2 air outlet, and then enter the upper air blade cavity through the B1 air outlet; when the lower air blade rotates and the upper air blade does not rotate, the air in the upper air blade cavity enters the transition cavity through the B1 air outlet, and then enters the lower air blade cavity through the B2 air outlet.

[0010] Further optionally, a C1 flow guiding ring is formed at the B1 air outlet, and the C1 flow guiding ring can enable the air in the upper air blade cavity to smoothly enter the transition cavity, or enable the air in the transition cavity to smoothly enter the upper air blade cavity;

[0011] A C2 flow guiding ring is formed at the B2 air outlet, and the C2 flow guiding ring can enable the air in the lower air blade cavity to smoothly enter the transition cavity, or enable the air in the transition cavity to smoothly enter the lower air blade cavity.

[0012] Further optionally, the housing includes a housing left side wall and a housing right side wall which are oppositely arranged left and right;

[0013] The B1 air outlet includes a B11 air outlet and a B12 air outlet which are oppositely arranged left and right, and the B11 air outlet and the B12 air outlet are respectively arranged close to the housing left side wall and the housing right side wall; the B2 air outlet includes a B21 air outlet and a B22 air outlet which are oppositely arranged left and right, and the B21 air outlet and the B22 air outlet are respectively arranged close to the housing left side wall and the housing right side wall;

[0014] The transition air housing includes a left transition air housing and a right transition air housing. The left transition air housing forms a left transition cavity, and the left transition cavity communicates with the B11 air outlet and the B21 air outlet; the right transition air housing forms a right transition cavity, and the right transition cavity communicates with the B12 air outlet and the B22 air outlet.

[0015] Further optionally, the cabinet-type air conditioner indoor unit includes an indoor heat exchanger, and the indoor heat exchanger includes a left heat exchanger and a right heat exchanger; the left heat exchanger is disposed in the left transition cavity and the left heat exchanger includes a first left heat exchanger and a second left heat exchanger which are oppositely arranged up and down; the first left heat exchanger is disposed close to the B11 air outlet, and the second left heat exchanger is disposed close to the B21 air outlet;

[0016] The right heat exchanger is disposed in the right transition cavity and the right heat exchanger includes a first right heat exchanger and a second right heat exchanger which are oppositely arranged up and down; the first right heat exchanger is disposed close to the B12 air outlet, and the second right heat exchanger is disposed close to the B22 air outlet.

[0017] Further optionally, when the upper wind blade rotates and the lower wind blade does not rotate, a part of the air in the lower wind blade cavity can flow through the B21 air outlet, the second left heat exchanger, and the first left heat exchanger in sequence, and then enter the upper wind blade cavity through the B11 air outlet; another part of the air in the lower wind blade cavity flows through the B22 air outlet, the second right heat exchanger, and the first right heat exchanger in sequence, and then enters the upper wind blade cavity through the B21 air outlet;

[0018] When the lower wind blade rotates and the upper wind blade does not rotate, a part of the air in the upper wind blade cavity can flow through the B11 air outlet, the first left heat exchanger, and the second left heat exchanger in sequence, and then enter the lower wind blade cavity through the B12 air outlet; another part of the air in the upper wind blade cavity flows through the B21 air outlet, the first right heat exchanger, and the second right heat exchanger in sequence, and then enters the lower wind blade cavity through the B22 air outlet.

[0019] Further optionally, both the first left heat exchanger and the second left heat exchanger are plate heat exchangers; the heat exchange surfaces of the first left heat exchanger and the second left heat exchanger intersect and protrude towards the space between the B11 air outlet and the B21 air outlet;

[0020] Both the first right heat exchanger and the second right heat exchanger are plate heat exchangers; the heat exchange surfaces of the first right heat exchanger and the second right heat exchanger intersect and protrude towards the B12 air outlet and the B22 air outlet.

[0021] Further optionally, it satisfies: 90°≤ɑ≤180°, 90°≤β≤180°;

[0022] Where 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.

[0023] Further optionally, the air duct assembly includes a volute, a volute cover, an upper air duct shell, and a lower air duct shell. The volute and the volute cover are cooperatively connected to form an upper wind blade cavity and a lower wind blade cavity; the upper air duct shell is arranged at the top of the upper wind blade cavity and the upper air duct shell forms the upper air duct; the lower air duct shell is arranged at the bottom of the lower wind blade cavity and the lower air duct shell forms the lower air duct.

[0024] Further optionally, a wind guiding assembly is arranged at the upper air outlet. The wind guiding assembly includes a wind guiding plate and a connecting rod; there are multiple wind guiding plates, and the multiple wind guiding plates are rotatably arranged at the upper air outlet, and the multiple wind guiding plates are sequentially arranged at intervals along the length direction of the upper air outlet; each wind guiding plate forms a connecting portion at the end far from its own rotating shaft, and the multiple connecting portions are connected by a connecting rod;

[0025] When one of the plurality of air guide plates is controlled to rotate, the plurality of air guide plates can rotate synchronously, thereby opening or closing the upper air outlet.

[0026] Compared with the prior art, the beneficial effects of the present invention mainly lie in:

[0027] When the upper wind blade rotates, the indoor air enters the lower air duct through the lower air outlet, and then flows through the A2 air outlet, B2 air outlet, B1 air outlet, and A1 air outlet in sequence and enters the upper air duct, and then is discharged through the upper air outlet; when the lower wind blade rotates, the indoor air enters the upper air duct through the upper air outlet, and then flows through the A1 air outlet, B1 air outlet, B2 air outlet, and A2 air outlet in sequence and enters the lower air duct, and then is discharged through the lower air outlet.

[0028] No additional components are required, and the control process is simple; only by controlling the rotation of the upper wind blade, the upper air outlet can be realized; by controlling the rotation of the lower wind blade, the lower air outlet can be realized; the positions of the upper air outlet and the lower air outlet are optimized, the distance between the upper air outlet and the lower air outlet is increased, and the principles of cold air sinking during refrigeration and hot air rising during heating are fully utilized, so that large swirling eddies are formed in the room where the indoor unit is located, the temperature change speed of the indoor air is increased, the temperature distribution of the indoor air is made uniform and the flow rate is stable, the time required for the room where the indoor unit is located to reach the set temperature is shortened, the direct blowing feeling of the air flow is reduced, the air flow short circuit is avoided, and the comfort of the air is improved. Description of the Drawings

[0029] 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 to be used in 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 also be obtained according to the provided drawings.

[0030] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present invention can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change of 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.

[0031] Figure 1 It is a schematic assembly structure diagram of an embodiment of a cabinet-type air conditioner indoor unit provided by the present invention;

[0032] Figure 2 It is a schematic exploded structure diagram of an embodiment of a cabinet-type air conditioner indoor unit provided by the present invention;

[0033] Figure 3Schematic assembly structure diagram of the indoor heat exchanger and air duct assembly embodiments provided by the present invention;

[0034] Figure 4 Exploded structure diagram of the indoor heat exchanger and air duct assembly embodiments provided by the present invention;

[0035] Figure 5a Schematic diagram of an embodiment of the air flow path when the indoor unit of the cabinet air conditioner provided by the present invention is in the upper air outlet mode;

[0036] Figure 5b Schematic diagram of an embodiment of the air flow path when the indoor unit of the cabinet air conditioner provided by the present invention is in the lower air outlet mode;

[0037] Figure 6 Schematic structure diagram of the air deflector assembly embodiments provided by the present invention;

[0038] In the figure:

[0039] 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 - Top wall of the housing; 141 - Upper air outlet; 15 - Rear side wall of the housing; 16 - Base; 17 - Connecting piece; 18 - Housing cavity; 19 - Transition air housing; 191 - Transition cavity;

[0040] 21 - Upper air duct housing; 211 - Upper air duct; 22 - Lower air duct housing; 221 - Lower air duct; 231 - Volute; 232 - Volute cover; 24 - Upper air blade cavity; 241 - B1 air outlet; 243 - Upper air blade; 25 - Lower air blade cavity; 251 - B2 air outlet; 253 - Lower air blade; 261 - C1 flow guide ring; 262 - C2 flow guide ring;

[0041] 51 - First left heat exchanger; 52 - Second left heat exchanger; 53 - First right heat exchanger; 54 - Second right heat exchanger;

[0042] 6 - Air deflector assembly; 61 - Air deflector; 62 - Link; 63 - Air deflector motor. 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 them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly dictates 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 relational term describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0046] It should also be noted that the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a commodity or system comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the commodity or system comprising said element.

[0047] In existing cabinet air conditioners, when switching between the upper air outlet mode and the lower air outlet mode, the required component structure is complex, the control process is cumbersome, and the distances between the upper air outlet and the lower air outlet and the air inlet are relatively close, resulting in a narrow air flow range and a slow change in the indoor air temperature.

[0048] The present invention creatively provides an indoor unit of a cabinet air conditioner, comprising a housing and an air duct assembly. The housing encloses a housing cavity and the housing includes a front housing side wall and a top housing wall. A lower air outlet is formed on the lower side of the front housing side wall, and an upper air outlet is formed on the top housing wall. The air duct assembly is disposed in the housing cavity and forms an upper air duct, an upper air blade cavity, a lower air blade cavity and a lower air duct. An A1 air outlet is formed at the upper end of the upper air blade cavity and a B1 air outlet is formed at the lower end. An A2 is formed at the lower end of the lower air blade cavity and a B2 air outlet is formed at the upper end. The upper end of the upper air duct communicates with the interior through the upper air outlet, and the lower end of the upper air duct communicates with the A1 air outlet. The lower end of the lower air duct communicates with the interior through the lower air outlet, and the upper end of the lower air duct communicates with the A2 air outlet.

[0049] A transition cavity is formed between the housing and the air duct assembly. The B1 air outlet communicates the upper air blade cavity and the transition cavity, and the B2 air outlet communicates the lower air blade cavity and the transition cavity.

[0050] When the cabinet-type air conditioner indoor unit is in the upper air outlet mode, the upper air blade rotates, allowing indoor air to enter the lower air duct through the lower air inlet, and then sequentially flowing through the A2 air outlet, B2 air outlet, B1 air outlet, and A1 air outlet to enter the upper air duct, and then being discharged through the upper air outlet; when the cabinet-type air conditioner indoor unit is in the lower air outlet mode, the lower air blade rotates, allowing indoor air to enter the upper air duct through the upper air inlet, and then sequentially flowing through the A1 air outlet, B1 air outlet, B2 air outlet, and A2 air outlet to enter the lower air duct, and then being discharged through the lower air outlet;

[0051] No additional components are required, and the control process is simple; only by controlling the rotation of the upper air blade, the upper air outlet can be achieved; by controlling the rotation of the lower air blade, the lower air outlet can be achieved; the positions of the upper air outlet and the lower air outlet are optimized, and the distance between the upper air outlet and the lower air outlet is increased, enabling a large swirling eddy current to form in the room where the indoor unit is located, increasing the temperature change speed of the indoor air, making the temperature distribution of the indoor air uniform and the flow rate stable, and improving the comfort of the air.

[0052] As Figures 1 to 6 shown, this embodiment provides a cabinet-type air conditioner indoor unit, including a housing 1 and an air duct assembly. The housing 1 encloses a housing cavity 18, and an upper air outlet 141 is formed in the upper part of the housing 1, and a lower air outlet 111 is formed in the lower part of the housing 1; specifically, the housing 1 includes a front housing side wall 11, a rear housing side wall 15, a left housing side wall 12, a right housing side wall 13, a housing top wall 14, and a base 16. The front housing side wall 11 and the rear housing side wall 15 are arranged opposite to each other front and back, the left housing side wall 12 and the right housing side wall 13 are arranged opposite to each other left and right, and the front housing side wall 11, the left housing side wall 12, the rear housing side wall 15, and the right housing side wall 13 are sequentially connected and arranged on the base 16; the housing top wall 14 is arranged above the front housing side wall 11, the left housing side wall 12, the rear housing side wall 15, and the right housing side wall 13, and is connected to all of the front housing side wall 11, the left housing side wall 12, the rear housing side wall 15, and the right housing side wall 13; a lower air outlet 111 is formed on the lower side of the front housing side wall 11, and an upper air outlet 141 is formed on the housing top wall 14; no air inlets are provided on the front housing side wall 11 and the rear housing side wall 15 to ensure the aesthetic appearance of the indoor unit; the air duct assembly is arranged in the housing cavity 18; the housing top wall 14 is connected to the front housing side wall 11 through a connecting member 17;

[0053] The air duct assembly is formed with an upper air duct 211, an upper impeller chamber 24, a lower impeller chamber 25, and a lower air duct 221 arranged in sequence from top to bottom; an upper impeller 243 is rotatably arranged in the upper impeller chamber 24, and the upper impeller chamber 24 is formed with an A1 air outlet and a B1 air outlet 241; a lower impeller 253 is rotatably arranged in the lower impeller chamber 25, and the lower impeller chamber 25 is formed with an A2 air outlet and a B2 air outlet 251; the upper air duct 211 communicates with the upper air inlet 141 and the A1 air outlet; the lower air duct 221 communicates with the lower air inlet 111 and the A2 air outlet; specifically, the upper end of the upper impeller chamber 24 forms the A1 air outlet, and the lower end of the upper impeller chamber 24 forms the B1 air outlet 241; the lower end of the lower impeller chamber 25 forms the A2 air outlet, and the upper end of the lower impeller chamber 25 forms the B2 air outlet 251;

[0054] A transition chamber 191 is formed between the housing 1 and the air duct assembly; the B1 air outlet 241 communicates the upper impeller chamber and the transition chamber, and the B2 air outlet 251 communicates the lower impeller chamber and the transition chamber 191;

[0055] The cabinet-type air conditioner indoor unit is provided with an upper air outlet mode and a lower air outlet mode. When the cabinet-type air conditioner indoor unit is in the upper air outlet mode, the upper impeller 243 rotates and the lower impeller 253 does not rotate, so that indoor air enters the lower air duct 221 through the lower air inlet 111, and then is discharged through the upper air inlet 141. At this time, the cabinet-type air conditioner indoor unit can operate in the cooling mode; when the cabinet-type air conditioner indoor unit is in the lower air outlet mode, the lower impeller 253 rotates and the upper impeller 243 does not rotate, so that indoor air enters the upper air duct 211 through the upper air inlet 141, and then is discharged through the lower air inlet 111. At this time, the cabinet-type air conditioner indoor unit can operate in the heating mode;

[0056] The side wall of the housing 1 is not provided with an air inlet to ensure the appearance of the cabinet-type air conditioner indoor unit; the air inlet and outlet modes can be automatically switched to achieve heating or cooling, improving the operating efficiency of the indoor unit.

[0057] To address the problem of unsmooth air flow between the B1 air outlet 241 and the B2 air outlet 251, in this embodiment, it is proposed that the air duct assembly further includes a transition air housing 19. The transition air housing 19 surrounds the B1 air outlet 241 and the B2 air outlet 251 and forms a transition chamber 191; the transition chamber 191 communicates the B1 air outlet 241 and the B2 air outlet 251 and plays a role in guiding the air flow, enabling smooth air flow between the B1 air outlet 241 and the B2 air outlet 251 and ensuring the ventilation volume;

[0058] When the upper impeller 243 rotates and the lower impeller 253 does not rotate, the air in the lower impeller chamber 25 can enter the transition chamber 191 through the B2 air outlet 251, and then enter the upper impeller chamber 24 through the B1 air outlet 241; when the lower impeller 253 rotates and the upper impeller 243 does not rotate, the air in the upper impeller chamber 24 enters the transition chamber 191 through the B1 air outlet 241, and then enters the lower impeller chamber 25 through the B2 air outlet 251.

[0059] Regarding the problem of unsmooth air flow between the B1 air outlet 241 and the B2 air outlet 251, this embodiment further proposes that a C1 flow guide ring 261 is formed at the B1 air outlet 241. The C1 flow guide ring 261 can smoothly introduce the air in the upper air blade cavity 24 into the transition cavity 191, or smoothly introduce the air in the transition cavity 191 into the upper air blade cavity 24;

[0060] A C2 flow guide ring 262 is formed at the B2 air outlet 251. The C2 flow guide ring 262 can smoothly introduce the air in the lower air blade cavity 25 into the transition cavity 191, or smoothly introduce the air in the transition cavity 191 into the lower air blade cavity 25.

[0061] Regarding the problem of unsmooth air flow caused by inappropriate setting positions of the B1 air outlet 241 and the B2 air outlet 251, this embodiment proposes that the left side wall 12 of the housing and the right side wall 13 of the housing are oppositely arranged and are both connected to the front side wall 11 of the housing and the top wall 14 of the housing;

[0062] The B1 air outlet 241 includes a B11 air outlet and a B12 air outlet that are oppositely arranged left and right. The B11 air outlet is arranged close to the left side wall 12 of the housing, and the B12 air outlet is arranged close to the right side wall 13 of the housing; the B2 air outlet 251 includes a B21 air outlet and a B22 air outlet that are oppositely arranged left and right. The B21 air outlet is arranged close to the left side wall 12 of the housing, and the B22 air outlet is arranged close to the right side wall 13 of the housing;

[0063] The transition air housing 19 includes a left transition air housing and a right transition air housing. The left transition air housing forms a left transition cavity, and the left transition cavity communicates with the B11 air outlet and the B21 air outlet. A part of the air can flow between the B11 air outlet and the B21 air outlet through the left transition cavity; the right transition air housing forms a right transition cavity, and the right transition cavity communicates with the B12 air outlet and the B22 air outlet. Another part of the air can flow between the B12 air outlet and the B22 air outlet through the right transition cavity.

[0064] Regarding the problem of low heat exchange efficiency caused by unreasonable design of the indoor heat exchanger, this embodiment proposes that the cabinet-type air conditioner indoor unit includes an indoor heat exchanger, and the indoor heat exchanger includes a left heat exchanger and a right heat exchanger; the left heat exchanger is arranged in the left transition cavity and the left heat exchanger includes a first left heat exchanger 51 and a second left heat exchanger 52 that are arranged oppositely up and down; the first left heat exchanger 51 is arranged close to the B11 air outlet, and the second left heat exchanger 52 is arranged close to the B21 air outlet;

[0065] The right heat exchanger is arranged in the right transition cavity and the right heat exchanger includes a first right heat exchanger 53 and a second right heat exchanger 54 that are arranged oppositely up and down; the first right heat exchanger 53 is arranged close to the B12 air outlet, and the second right heat exchanger 54 is arranged close to the B22 air outlet.

[0066] Further, when the upper wind blade 243 rotates and the lower wind blade 253 does not rotate, a part of the air in the lower wind blade cavity 25 can flow through the B21 air outlet, the second left heat exchanger 52, and the first left heat exchanger 51 in sequence, and then enter the upper wind blade cavity 24 through the B11 air outlet; another part of the air in the lower wind blade cavity 25 flows through the B22 air outlet, the second right heat exchanger 54, and the first right heat exchanger 53 in sequence, and then enters the upper wind blade cavity 24 through the B21 air outlet;

[0067] When the lower wind blade 253 rotates and the upper wind blade 243 does not rotate, a part of the air in the upper wind blade cavity 24 can flow through the B11 air outlet, the first left heat exchanger 51, and the second left heat exchanger 52 in sequence, and then enter the lower wind blade cavity 25 through the B12 air outlet; another part of the air in the upper wind blade cavity 24 flows through the B21 air outlet, the first right heat exchanger 53, and the second right heat exchanger 54 in sequence, and then enters the lower wind blade cavity 25 through the B22 air outlet.

[0068] Specifically, both the first left heat exchanger 51 and the second left heat exchanger 52 are plate heat exchangers; the heat exchange surfaces of the first left heat exchanger 51 and the second left heat exchanger 52 intersect and protrude between the B11 air outlet and the B21 air outlet;

[0069] Both the first right heat exchanger 53 and the second right heat exchanger 54 are plate heat exchangers; the heat exchange surfaces of the first right heat exchanger 53 and the second right heat exchanger 54 intersect and protrude toward the B12 air outlet and the B22 air outlet;

[0070] The first left heat exchanger 51 and the second left heat exchanger 52 satisfy: 90° < ɑ < 180°, and the first right heat exchanger 53 and the second right heat exchanger 54 satisfy: 90° < β < 180°;

[0071] Wherein, ɑ is the included angle between the heat exchange surface of the first left heat exchanger 51 and the heat exchange surface of the second left heat exchanger 52, and β is the included angle between the heat exchange surface of the first right heat exchanger 53 and the heat exchange surface of the second right heat exchanger 54.

[0072] In view of the single air inlet and outlet mode of the cabinet-type air conditioner indoor unit due to the unreasonable structural design of the air duct assembly, in this embodiment, it is proposed that the air duct assembly includes a volute 231, a volute cover 232, an upper air duct housing 21, and a lower air duct housing 22. The volute 231 and the volute cover 232 are cooperatively connected to form an upper wind blade cavity 24 and a lower wind blade cavity 25; the upper air duct housing 21 is arranged at the top of the upper wind blade cavity 24 and the upper air duct housing 21 forms an upper air duct 211; the lower air duct housing 22 is arranged at the bottom of the lower wind blade cavity 25 and the lower air duct housing 22 forms a lower air duct 221;

[0073] The left heat exchanger is arranged on the volute 231, and the left heat exchanger and the volute 231 are sealed by sponge; the right heat exchanger is arranged on the volute cover 232, and the right heat exchanger and the volute cover 232 are sealed by sponge.

[0074] In view of the problem that the air outlet direction of the upper air inlet 141 cannot be adjusted, in this embodiment, a wind guiding assembly 6 is provided at the upper air inlet 141. The wind guiding assembly 6 includes a wind guiding plate 61, a connecting rod 62, and a wind guiding motor 63. A plurality of wind guiding plates 61 are provided. The plurality of wind guiding plates 61 are rotatably arranged at the upper air inlet 141, and the plurality of wind guiding plates 61 are sequentially arranged at intervals along the length direction of the upper air inlet 141. A connecting portion is formed at one end of each wind guiding plate 61 away from its own rotating shaft, and the plurality of connecting portions are connected by a connecting rod 62.

[0075] When one of the plurality of wind guiding plates 61 is controlled to rotate, the plurality of wind guiding plates 61 can rotate synchronously, and thus the upper air inlet 141 can be opened or closed. Specifically, the wind guiding motor 63 is drivingly connected to one of the wind guiding plates 61, and the wind guiding motor 63 drives the wind guiding plate 61 to rotate, and then the plurality of wind guiding plates 61 rotate synchronously.

[0076] 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, setting manners, or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent settings included within the spirit and scope of the appended claims.

Claims

1. A cabinet-type air conditioner indoor unit, characterized in that, It includes a housing and an air duct assembly. The housing encloses a housing cavity, and an upper air inlet is formed at the upper part of the housing, and a lower air outlet is formed at the lower part of the housing. The air duct assembly is arranged in the housing cavity, and the air duct assembly forms an upper air duct, an upper air blade cavity, a lower air blade cavity and a lower air duct which are arranged in sequence from top to bottom. An upper air blade is rotatably arranged in the upper air blade cavity, and the upper air blade cavity forms an A1 air outlet and a B1 air outlet. A lower air blade is rotatably arranged in the lower air blade cavity, and the lower air blade cavity forms an A2 air outlet and a B2 air outlet. The upper air duct communicates the upper air inlet and the A1 air outlet. The lower air duct communicates the lower air outlet and the A2 air outlet. A transition cavity is formed between the housing and the air duct assembly. The B1 air outlet communicates the upper air blade cavity and the transition cavity, and the B2 air outlet communicates the lower air blade cavity and the transition cavity. The cabinet-type air conditioner indoor unit is provided with an upper air outlet mode and a lower air outlet mode. When the cabinet-type air conditioner indoor unit is in the upper air outlet mode, the upper air blade rotates, so that indoor air enters the lower air duct through the lower air outlet, and then is discharged through the upper air inlet. When the cabinet-type air conditioner indoor unit is in the lower air outlet mode, the lower air blade rotates, so that indoor air enters the upper air duct through the upper air inlet, and then is discharged through the lower air outlet.

2. The cabinet-type air conditioner indoor unit according to claim 1, characterized in that, The air duct assembly further includes a transition air housing. The transition air housing surrounds the B1 air outlet and the B2 air outlet and forms the transition cavity. The transition cavity communicates the B1 air outlet and the B2 air outlet. When the upper air blade rotates and the lower air blade does not rotate, the air in the lower air blade cavity can enter the transition cavity through the B2 air outlet, and then enter the upper air blade cavity through the B1 air outlet. When the lower air blade rotates and the upper air blade does not rotate, the air in the upper air blade cavity enters the transition cavity through the B1 air outlet, and then enters the lower air blade cavity through the B2 air outlet.

3. The cabinet-type air conditioner indoor unit according to claim 2, wherein, A C1 flow guide ring is formed at the B1 air outlet. The C1 flow guide ring can make the air in the upper air blade cavity smoothly enter the transition cavity, or make the air in the transition cavity smoothly enter the upper air blade cavity. A C2 flow guide ring is formed at the B2 air outlet. The C2 flow guide ring can make the air in the lower air blade cavity smoothly enter the transition cavity, or make the air in the transition cavity smoothly enter the lower air blade cavity.

4. The cabinet-type air conditioner indoor unit according to claim 2, 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 B1 air outlet includes a B11 air outlet and a B12 air outlet which are arranged opposite to each other left and right. The B11 air outlet and the B12 air outlet are respectively arranged close to the housing left side wall and the housing right side wall. The B2 air outlet includes a B21 air outlet and a B22 air outlet which are arranged opposite to each other left and right. The B21 air outlet and the B22 air outlet are respectively arranged close to the housing left side wall and the housing right side wall. The transition air housing includes a left transition air housing and a right transition air housing. The left transition air housing forms a left transition cavity, and the left transition cavity communicates the B11 air outlet and the B21 air outlet. The right transition air housing forms a right transition cavity, and the right transition cavity communicates the B12 air outlet and the B22 air outlet.

5. The cabinet-type air conditioner indoor unit according to claim 4, characterized in that, It includes an indoor heat exchanger, and the indoor heat exchanger includes a left heat exchanger and a right heat exchanger; the left heat exchanger is arranged in the left transition cavity and 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 close to the B11 air outlet, and the second left heat exchanger is arranged close to the B21 air outlet; The right heat exchanger is arranged in the right transition cavity and 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 close to the B12 air outlet, and the second right heat exchanger is arranged close to the B22 air outlet.

6. The indoor unit of a cabinet air conditioner according to claim 5, characterized in that, When the upper air blade rotates and the lower air blade does not rotate, a part of the air in the lower air blade cavity can flow through the B21 air outlet, the second left heat exchanger, the first left heat exchanger in sequence, and then enter the upper air blade cavity through the B11 air outlet; another part of the air in the lower air blade cavity flows through the B22 air outlet, the second right heat exchanger, the first right heat exchanger in sequence, and then enters the upper air blade cavity through the B21 air outlet; When the lower air blade rotates and the upper air blade does not rotate, a part of the air in the upper air blade cavity can flow through the B11 air outlet, the first left heat exchanger, the second left heat exchanger in sequence, and then enter the lower air blade cavity through the B12 air outlet; another part of the air in the upper air blade cavity flows through the B21 air outlet, the first right heat exchanger, the second right heat exchanger in sequence, and then enters the lower air blade cavity through the B22 air outlet.

7. The cabinet-type air conditioner indoor unit according to claim 5, characterized in that, Both the first left heat exchanger and the second left heat exchanger are plate heat exchangers; the heat exchange surfaces of the first left heat exchanger and the second left heat exchanger intersect and protrude towards between the B11 air outlet and the B21 air outlet; Both the first right heat exchanger and the second right heat exchanger are plate heat exchangers; the heat exchange surfaces of the first right heat exchanger and the second right heat exchanger intersect and protrude towards the B12 air outlet and the B22 air outlet.

8. The indoor unit of the cabinet air conditioner according to claim 7, characterized in that, Satisfy: 90°≤ɑ≤180°, 90°≤β≤180°; 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.

9. The indoor cabinet air conditioner according to claim 1, wherein, The air duct assembly includes a volute, a volute cover, an upper air duct shell and a lower air duct shell, and the volute and the volute cover are cooperatively connected to form an upper air blade cavity and a lower air blade cavity; the upper air duct shell is arranged at the top of the upper air blade cavity and the upper air duct shell forms the upper air duct; the lower air duct shell is arranged at the bottom of the lower air blade cavity and the lower air duct shell forms the lower air duct.

10. The cabinet-type air conditioner indoor unit according to claim 1, characterized in that, A wind guiding assembly is arranged at the upper air outlet, and the wind guiding assembly includes a wind guiding plate and a connecting rod; a plurality of wind guiding plates are provided, and the plurality of wind guiding plates are rotatably arranged at the upper air outlet, and the plurality of wind guiding plates are arranged at intervals in sequence along the length direction of the upper air outlet; each wind guiding plate forms a connecting portion at one end far away from its own rotating shaft, and the plurality of connecting portions are connected by a connecting rod; When one of the plurality of wind guiding plates is controlled to rotate, the plurality of wind guiding plates can rotate synchronously, and thus the upper air outlet can be opened or closed.

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