Air conditioner indoor unit

Abstract

The application relates to the air conditioning technical field and discloses an air conditioner indoor unit, which comprises a shell, an air duct assembly, a separation assembly, a first cross-flow fan wheel and a second cross-flow fan wheel. The shell is provided with an air inlet. The air duct assembly is arranged in the shell and defines an airflow channel connected with the air inlet. The separation assembly is arranged in the air duct assembly and separates the airflow channel into a heat exchange air duct and a mixed air duct. The first cross-flow fan wheel is arranged in the heat exchange air duct. The second cross-flow fan wheel is arranged in the mixed air duct and rotates coaxially with the first cross-flow fan wheel and is drivingly connected. The air conditioner indoor unit disclosed by the application can improve the air outlet volume of the mixed air duct and thus improve the air mixing effect of the air conditioner indoor unit.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, for example, to an indoor air conditioning unit. Background Technology

[0002] When the air conditioner is running, the temperature difference between the air blown out by the air conditioner and the indoor temperature is large, which may cause discomfort to the user if the air blows directly on the user.

[0003] To make the airflow from an air conditioner smoother, a wall-mounted indoor unit is disclosed in related technology. The unit includes a housing with an air inlet for drawing air from the indoor environment and an air outlet for supplying air to the indoor environment; an evaporator disposed within the housing for heat exchange with the air flowing in from the air inlet, forming heat-exchange air; a main airflow channel disposed within the housing for guiding the heat-exchange air to the air outlet; a fan disposed within the main airflow channel and configured to direct airflow from the air inlet to the air outlet; and at least one mixing duct formed in the housing, configured to allow air from the indoor environment to flow through the mixing duct to the main airflow channel and mix with the heat-exchange air; the outlet of the mixing duct is located on the lateral side of the air outlet. This wall-mounted indoor unit can improve the airflow comfort, enhance the user's airflow experience, increase airflow volume, and improve cooling / heating speed.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] The airflow from the main airflow channel is drawn into the air-mixing duct, but the mixed air volume is low, and the mixing effect needs further improvement.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides an indoor air conditioning unit to improve the air mixing effect of the indoor air conditioning unit.

[0009] In some embodiments, the indoor unit of the air conditioner includes a housing, an air duct assembly, a partition assembly, a first cross-flow fan, and a second cross-flow fan. The housing has an air inlet. The air duct assembly is disposed within the housing and defines an airflow channel communicating with the air inlet. The partition assembly is disposed within the air duct assembly and divides the airflow channel into a heat exchange air duct and a mixing air duct. The first cross-flow fan is disposed in the heat exchange air duct. The second cross-flow fan is disposed in the mixing air duct, and the second cross-flow fan rotates coaxially with and is driven to rotate with the first cross-flow fan.

[0010] In some embodiments, the separating component includes a first partition disposed within an airflow channel, the first partition having a connecting hole, and the first cross-flow impeller and the second cross-flow impeller being driven connected through the connecting hole.

[0011] In some embodiments, one of the first and second cross-flow impellers is provided with a plug-in shaft extending axially, and the other is provided with a plug-in groove axially. The plug-in shaft extends through the connecting hole into the plug-in groove to drive the first and second cross-flow impellers together.

[0012] In some embodiments, the side of the first partition facing the first cross-flow impeller is provided with a first groove, and one end of the first cross-flow impeller extends into the first groove.

[0013] In some embodiments, the side of the first partition facing the second cross-flow impeller is provided with a second groove, and one end of the second cross-flow impeller extends into the second groove.

[0014] In some embodiments, the air duct assembly includes a chassis with an air duct outlet, the air duct outlet being connected to an air inlet via an airflow channel; the partition assembly further includes a second partition, the second partition being disposed at the air duct outlet of the chassis, and the first partition being spliced ​​with the second partition.

[0015] In some embodiments, the second partition is configured with a heat insulation cavity, which is filled with heat insulation material.

[0016] In some embodiments, the second partition is covered with thermal insulation material.

[0017] In some embodiments, the second partition and the chassis are an integral structure.

[0018] In some embodiments, the indoor unit of the air conditioner further includes a heat exchanger disposed in the heat exchange duct; the partition assembly further includes a third partition disposed in the duct assembly and spliced ​​with the first partition, a fixing groove being formed on one side of the third partition, and a plurality of refrigerant pipes at one end of the heat exchanger being embedded in the fixing groove.

[0019] In some embodiments, the chassis is configured with a water receiving trough, and a first portion of the third partition is inserted into the water receiving trough.

[0020] In some embodiments, the indoor unit of the air conditioner includes two partition components, which are respectively disposed at both ends of the air duct assembly. A heat exchange air duct is defined between the two partition components, and two mixing air ducts are defined between the two partition components and the two ends of the air duct assembly.

[0021] The air conditioner indoor unit provided in this embodiment can achieve the following technical effects:

[0022] By separating the airflow into a mixing duct using a partition component, the ambient temperature air blown out through the mixing duct mixes with the air blown out through the heat exchange duct before being blown into the indoor environment. This reduces user discomfort caused by a large temperature difference between the air conditioner's outlet air and the indoor temperature. A second cross-flow fan is installed in the mixing duct to increase the airflow volume, thereby improving the mixing effect of the indoor unit. The second cross-flow fan is driven by the first cross-flow fan, requiring only one fan motor to drive both fans, resulting in lower costs and facilitating the miniaturization of the indoor unit. The first and second cross-flow fans rotate synchronously and coaxially, maintaining a certain ratio between the airflow volume of the mixing duct and the heat exchange duct, thus achieving adaptive adjustment of the airflow volume of the mixing duct relative to that of the heat exchange duct.

[0023] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0024] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0025] Figure 1 This is a schematic diagram of the structure of an indoor air conditioner unit provided in an embodiment of this disclosure;

[0026] Figure 2 This is a schematic diagram of another air conditioner indoor unit provided in an embodiment of this disclosure;

[0027] Figure 3 This is a schematic diagram of the structure of an air conditioner indoor unit after removing part of the casing, provided in an embodiment of this disclosure;

[0028] Figure 4 This is a schematic diagram of another air conditioner indoor unit after removing part of the casing, provided in an embodiment of this disclosure;

[0029] Figure 5This is a schematic diagram of the cooperation between the air duct assembly and the partition assembly of an air conditioning indoor unit according to an embodiment of this disclosure;

[0030] Figure 6 This is a schematic diagram of the first cross-flow fan and the second cross-flow fan of an air conditioner indoor unit provided in this embodiment of the present disclosure.

[0031] Figure 7 This is a schematic diagram of the structure of the first partition of an air conditioner indoor unit provided in an embodiment of this disclosure;

[0032] Figure 8 This is a schematic diagram of the structure of the third partition of an air conditioner indoor unit provided in an embodiment of this disclosure.

[0033] Figure label:

[0034] 100: Housing; 101: Air inlet; 200: Duct assembly; 210: Chassis; 220: Water collection tank; 300: Separator assembly; 310: First partition; 311: First groove; 312: Connecting hole; 320: Second partition; 330: Third partition; 331: Fixing groove; 400: Heat exchanger; 510: Heat exchange duct; 520: First cross-flow impeller; 530: Insert shaft; 610: Mixing air duct; 620: Second cross-flow impeller; 710: First swashplate; 720: Second swashplate; 730: Fan motor. Detailed Implementation

[0035] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0036] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0037] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0038] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0039] Unless otherwise stated, the term "multiple" means two or more.

[0040] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0041] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0043] When an air conditioner is running, the temperature difference between the air blown out and the indoor temperature is significant, which may cause discomfort to the user if the air blown directly on them. To make the airflow from the air conditioner more gentle, a wall-mounted indoor unit is disclosed in related technology. This unit includes a housing with an air inlet for drawing air from the indoor environment and an air outlet for supplying air to the indoor environment; an evaporator disposed within the housing for heat exchange with the air flowing in from the air inlet, forming heat-exchange air; a main airflow channel disposed within the housing for guiding the heat-exchange air to the air outlet; a fan disposed within the main airflow channel and configured to promote airflow from the air inlet to the air outlet; and at least one mixing duct formed in the housing, configured to allow air from the indoor environment to flow through the mixing duct to the main airflow channel and mix with the heat-exchange air; and the outlet of the mixing duct is located on the lateral side of the air outlet. This wall-mounted indoor unit can improve the airflow comfort of the air conditioner, enhance the user's airflow experience, increase the airflow volume, and improve the cooling / heating speed. The problem with the related technology is that the airflow from the main airflow channel to the air intake and mixing duct is relatively low, and the mixing effect needs to be further improved.

[0044] To improve the air mixing effect of the indoor unit of the air conditioner, combined with Figure 1-8 As shown, this embodiment of the present disclosure provides an indoor air conditioning unit, including a housing 100, an air duct assembly 200, a partition assembly 300, a first cross-flow fan 520, and a second cross-flow fan 620. The housing 100 has an air inlet 101. The air duct assembly 200 is disposed within the housing 100 and defines an airflow channel communicating with the air inlet 101. The partition assembly 300 is disposed within the air duct assembly 200 and divides the airflow channel into a heat exchange air duct 510 and a mixing air duct 610. The first cross-flow fan 520 is disposed in the heat exchange air duct 510. The second cross-flow fan 620 is disposed in the mixing air duct 610 and is coaxially rotated and drivenly connected to the first cross-flow fan 520.

[0045] In this embodiment, the indoor unit of the air conditioner can be a wall-mounted unit or a floor-standing unit. The following description uses a wall-mounted unit as an example.

[0046] The air conditioner indoor unit includes a housing 100. The top of the housing 100 has an air inlet 101 that is opened along the width direction of the air conditioner indoor unit, and the bottom of the housing 100 has an air outlet that is opened along the length direction of the air conditioner indoor unit.

[0047] The air duct assembly 200 is disposed within the housing 100, defining an airflow channel within the housing 100. For example, the top of the air duct assembly 200 is open to connect with the air inlet 101 of the housing 100, and the bottom of the air duct assembly has an air outlet to connect with the air outlet of the housing 100.

[0048] A partition component 300 is disposed in the airflow channel, dividing the airflow channel into a mixing air duct 610 and a heat exchange air duct 510. Specifically, the airflow channel extends laterally, and the partition component 300 is disposed vertically to separate the airflow channel. The indoor unit of the air conditioner also includes a heat exchanger 400, which is located in the heat exchange air duct 510.

[0049] The air inlet 101 on the casing 100 serves partly as the air inlet for the mixing air duct and partly as the air inlet for the heat exchange air duct 510; alternatively, the air entering the indoor unit from the air inlet 101 is split at the separator 300, with part flowing to the mixing air duct 610 and the other part flowing to the heat exchange air duct 510. The air outlet on the casing 100 serves partly as the air outlet for the mixing air duct 610 and partly as the air outlet for the heat exchange air duct 510.

[0050] The indoor unit of the air conditioner also includes a first cross-flow fan 520, which is horizontally arranged in the heat exchange duct 510, driving air to flow from the air inlet 101 through the heat exchanger 400 to the air outlet of the heat exchange duct 510. As the air flows through the heat exchanger 400, it exchanges heat with the heat exchanger 400, causing its temperature to rise or fall. The air, after its temperature has risen or fallen, is then blown out of the air outlet of the heat exchange duct 510 into the indoor environment, enabling the air conditioner to perform its heating and cooling functions.

[0051] The indoor unit of the air conditioner also includes a second cross-flow fan 620, which is horizontally arranged in the mixing air duct 610, driving air to flow from the air inlet 101 to the air outlet of the mixing air duct 610. The air flowing through the mixing air duct 610 does not exchange heat with the indoor heat exchanger 400, and its temperature does not change. The air blown out through the mixing air duct 610 and the air blown out through the heat exchange air duct 510 are mixed after being blown out by the indoor unit of the air conditioner and then blown together to the user.

[0052] The second cross-flow fan 620 rotates coaxially with and is driven by the first cross-flow fan 520. The indoor unit of the air conditioner also includes a fan motor 730, the output shaft of which is driven by one of the second cross-flow fan 620 and the first cross-flow fan 520, thereby simultaneously driving the first cross-flow fan 520 and the second cross-flow fan 620 to rotate synchronously.

[0053] Using the air conditioner indoor unit provided in this embodiment, a mixing air duct 610 is separated by a partition component 300. The ambient temperature air blown out through the mixing air duct 610 mixes with the air blown out through the heat exchange air duct 510 before being blown into the indoor environment. This can alleviate user discomfort caused by a large temperature difference between the air outlet temperature of the air conditioner indoor unit and the indoor temperature. A second cross-flow fan 620 is provided in the mixing air duct 610 to increase the air volume of the mixing air duct 610, thereby improving the mixing effect of the air conditioner indoor unit. The second cross-flow fan 620 and... The first cross-flow fan 520 is driven and connected, and only one fan motor 730 is needed to drive the second cross-flow fan 620 and the first cross-flow fan 520 to rotate. This reduces costs and is beneficial for the miniaturization of the air conditioning indoor unit. The first cross-flow fan 520 and the second cross-flow fan 620 rotate synchronously and coaxially, and the air volume of the mixing air duct 610 and the air volume of the heat exchange air duct 510 can be maintained in a certain ratio. This means that the air volume of the mixing air duct 610 can be adaptively adjusted relative to the air volume of the heat exchange air duct 510.

[0054] Optionally, the partition assembly 300 includes a first partition 310, which is disposed in the airflow channel. The first partition 310 has a connecting hole 312, and the first cross-flow impeller 520 and the second cross-flow impeller 620 are drivenly connected through the connecting hole 312.

[0055] The first partition 310 is disposed within the airflow channel to isolate the airflow between the heat exchange duct 510 and the mixing air duct 610. To facilitate the drive connection between the first cross-flow impeller 520 and the second cross-flow impeller 620, the first partition 310 has a connecting hole 312. The first cross-flow impeller 520 and the second cross-flow impeller 620 are drive-connected through the connecting hole 312. With this arrangement, the partition assembly 300 separates the heat exchange duct 510 and the mixing air duct 610 while also facilitating the drive connection between the first cross-flow impeller 520 and the second cross-flow impeller 620.

[0056] Optionally, one of the first cross-flow impeller 520 and the second cross-flow impeller 620 is provided with a plug-in shaft 530 extending axially, and the other is provided with a plug-in groove axially. The plug-in shaft 530 passes through the connecting hole 312 and extends into the plug-in groove to drive the first cross-flow impeller 520 and the second cross-flow impeller 620.

[0057] In one optional embodiment, one end of the first cross-flow fan 520 extends with a connecting shaft 530, and one end of the second cross-flow fan 620 has a connecting groove. In another optional embodiment, one end of the first cross-flow fan 520 has a connecting groove, and one end of the second cross-flow fan 620 extends with a connecting shaft 530. The connecting shaft 530 is inserted into the connecting groove. The insertion of the connecting shaft 530 into the connecting groove serves two purposes: firstly, it secures the first cross-flow fan 520 and the second cross-flow fan 620 to each other; secondly, it enables the drive connection between the first cross-flow fan 520 and the second cross-flow fan 620.

[0058] Optionally, the first part of the insertion shaft 530 extends into the insertion groove, and the second part is located in the communication hole 312 of the first partition 310.

[0059] With this configuration, the connecting hole 312 of the first partition 310 only needs to avoid the insertion shaft 530, and the opening is relatively small. This can reduce the phenomenon of air from the heat exchange duct 510 entering the mixing duct 610 through the connecting hole 312.

[0060] Optionally, the cross-section of the plug shaft 530 is polygonal, and the cross-sectional shape of the plug groove is adapted to the cross-sectional shape of the plug shaft 530.

[0061] This configuration facilitates the synchronous rotation of the first cross-flow fan 520 and the second cross-flow fan 620.

[0062] Optionally, the side of the first partition plate 310 facing the first cross-flow impeller 520 is provided with a first groove 311, and one end of the first cross-flow impeller 520 extends into the first groove 311.

[0063] The bottom of the first groove 311 serves as the dividing part of the first partition 310, and the sidewalls of the first groove 311 are cylindrical. This not only improves the structural strength of the first partition 310, but also facilitates the installation and fixation of the first partition 310 by the laterally extending sidewalls of the first groove 311. The end of the first cross-flow impeller 520 is used to connect multiple cross-flow blades, and the end extending into the first groove 311 will not significantly affect the airflow of the first cross-flow impeller 520. The first groove 311 of the first partition 310 can also play an auxiliary positioning role when inserting the first cross-flow impeller 520 and the second cross-flow impeller 620.

[0064] Optionally, the side of the first partition plate 310 facing the second cross-flow impeller 620 is provided with a second groove, and one end of the second cross-flow impeller 620 extends into the second groove.

[0065] The bottom of the second groove serves as the dividing part of the first partition 310, and the sidewalls of the second groove are cylindrical. This not only improves the structural strength of the first partition 310, but also facilitates the installation and fixation of the first partition 310 by the laterally extending sidewalls of the second groove. The end of the second cross-flow impeller 620 is used to connect multiple cross-flow blades, and the end extending into the second groove does not significantly affect the airflow of the second cross-flow impeller 620. The second groove of the first partition 310 can also serve as an auxiliary positioning element when inserting the first cross-flow impeller 520 and the second cross-flow impeller 620.

[0066] Optionally, the air duct assembly 200 includes a chassis 210, which has an air duct outlet connected to the air inlet 101 via an airflow channel; the partition assembly 300 also includes a second partition 320, which is disposed at the air duct outlet of the chassis 210, and the first partition 310 and the second partition 320 are spliced ​​together.

[0067] The chassis 210 of the air duct assembly 200 has an air duct outlet, which corresponds to the air outlet in the housing 100. The air duct assembly 200 also defines a volute tongue to cooperate with the first cross-flow fan 520 and the second cross-flow fan 620 to realize air drive for the heat exchange air duct 510 and air drive for the mixing air duct 610.

[0068] The second partition 320 is located at the air outlet of the duct of the chassis 210 and is spliced ​​with the first partition 310. During the assembly of the indoor air conditioning unit, the first cross-flow fan 520, the second cross-flow fan 620, and the first partition 310 are assembled as a single unit, and then assembled with the housing 100 and the chassis 210. The first partition 310 and the second partition 320 work together to separate the airflow channel. With this arrangement, the shape of the first partition 310 is less affected by the shape of the duct cross-section. This not only allows for better separation of the airflow channel through the cooperation of the first partition 310 and the second partition 320, but also facilitates the assembly of the indoor air conditioning unit.

[0069] Optionally, the second partition 320 is configured with a heat insulation cavity, which is filled with heat insulation material.

[0070] When the indoor unit of the air conditioner is running in cooling mode, the temperature of the heat exchange air duct 510 is relatively low. The air entering the mixing air duct 610 has a high humidity, which easily leads to condensation on the second baffle 320. If the indoor unit runs in cooling mode for a long time, the condensate will accumulate and drip from the indoor unit or be blown out by the airflow from the mixing air duct 610. This will affect the cleanliness of the environment where the indoor unit is located and negatively impact the user experience.

[0071] The second partition 320 is configured with a heat insulation cavity. Exemplarily, the second partition 320 includes two layers of plates, with a heat insulation cavity formed between the two layers. Filling the heat insulation cavity with insulation material can reduce heat transfer between the mixing air duct 610 and the heat exchange air duct 510, thereby reducing condensation that occurs on the side of the second partition 320 facing the mixing air duct 610 where the temperature is lower.

[0072] Optionally, the second partition 320 is covered with thermal insulation material.

[0073] Applying insulation material to the second partition 320 can also reduce heat transfer between the heat exchange duct 510 and the mixing air duct 610 through the second partition 320. This can reduce the degree of temperature drop of the second partition 320, thereby reducing condensation on the side of the second partition 320 facing the mixing air duct 610, and further reducing water dripping or blowing from the indoor unit of the air conditioner.

[0074] Optionally, the second partition 320 and the chassis 210 are an integral structure.

[0075] The second partition 320 is an integral structure with the chassis 210, which can improve the structural strength of the chassis 210 and the second partition 320, and also improve the separation effect of the second partition 320. In addition, this arrangement reduces the number of assembly parts when the second partition 320 is installed, simplifies the assembly of the air conditioner indoor unit, and reduces the manufacturing cost of the air conditioner indoor unit.

[0076] Optionally, the first partition 310 is configured with a heat insulation cavity, which is filled with heat insulation material.

[0077] When the indoor unit of the air conditioner is running in cooling mode, the temperature of the heat exchange air duct 510 is relatively low. The air entering the mixing air duct 610 has a high humidity, which easily leads to condensation on the first baffle 310. If the indoor unit runs in cooling mode for a long time, the condensate will accumulate and drip from the indoor unit or be blown out by the airflow from the mixing air duct 610. This will affect the cleanliness of the environment where the indoor unit is located and negatively impact the user experience.

[0078] The first partition 310 is configured with a heat insulation cavity. Exemplarily, the first partition 310 includes two layers of plates, with a heat insulation cavity formed between the two layers. Filling the heat insulation cavity with heat insulation material can reduce heat transfer between the mixing air duct 610 and the heat exchange air duct 510, thereby reducing condensation that occurs on the side of the first partition 310 facing the mixing air duct 610 where the temperature is lower.

[0079] Optionally, the first partition 310 is covered with thermal insulation material.

[0080] Applying insulation material to the first partition 310 can also reduce heat transfer between the heat exchange duct 510 and the mixing air duct 610 through the first partition 310. This can reduce the degree of temperature drop of the first partition 310, thereby reducing condensation on the side of the first partition 310 facing the mixing air duct 610, and further reducing water dripping or blowing from the indoor unit of the air conditioner.

[0081] Optionally, the indoor unit of the air conditioner also includes a heat exchanger 400, which is disposed in the heat exchange duct 510; the partition assembly 300 also includes a third partition 330, which is disposed in the duct assembly 200 and spliced ​​with the first partition 310. One side of the third partition 330 is provided with a fixing groove 331, and multiple refrigerant pipes at one end of the heat exchanger 400 are embedded in the fixing groove 331.

[0082] The heat exchanger 400 is disposed in the heat exchange duct 510, serving as an evaporator during cooling and a condenser during heating. The heat exchanger 400 includes multiple refrigerant pipes, and the third partition 330 is constructed with a fixing groove 331, which corresponds to at least one of the multiple refrigerant pipes. That is, the third partition 330 serves not only as a separator but also as a support for the heat exchanger 400 and a side end cap. Air flowing through the heat exchanger 400, separated by the third partition 330, the second partition 320, and the first partition 310, flows along the heat exchange duct 510 to the air outlet of the chassis 210. With this arrangement, the third partition 330 not only works with the first partition 310 and the second partition 320 to provide better separation but also serves to secure the heat exchanger 400 during installation. This simplifies the structure of the indoor air conditioning unit and reduces its cost.

[0083] Optionally, the third partition 330 has multiple fixing grooves 331, and the heat exchanger 400 includes multiple refrigerant pipes, the ends of which are embedded in the multiple fixing grooves 331 of the third partition 330.

[0084] The third partition 330 not only serves to fix the heat exchanger 400, but also uses multiple grooves to position the refrigerant pipes in preset positions. During the assembly of the indoor air conditioning unit, the multiple refrigerant pipes of the heat exchanger 400 are fixed to the third partition 330, and the heat exchanger and the third partition are assembled into the indoor air conditioning unit as a whole. This optimizes the assembly process of the indoor air conditioning unit and improves its assembly efficiency.

[0085] Optionally, the third partition 330 is configured with a heat insulation cavity filled with thermal insulation material.

[0086] When the indoor unit of the air conditioner is running in cooling mode, the temperature of the heat exchange duct 510 is relatively low. The air entering the mixing duct 610 has a higher humidity, which easily leads to condensation on the third baffle 330. If the indoor unit runs in cooling mode for a long time, the condensate will accumulate and drip from the indoor unit or be blown out by the airflow from the mixing duct 610. This will affect the cleanliness of the environment where the indoor unit is located and negatively impact the user experience.

[0087] The third partition 330 is configured with a heat insulation cavity. Exemplarily, the third partition 330 includes two layers of plates, with a heat insulation cavity formed between the two layers. Filling the heat insulation cavity with insulation material can reduce heat transfer between the mixing air duct 610 and the heat exchange air duct 510, thereby reducing condensation that occurs on the side of the third partition 330 facing the mixing air duct 610 where the temperature is lower.

[0088] Optionally, the third partition 330 is fitted with thermal insulation material.

[0089] Applying insulation material to the third partition 330 can also reduce heat transfer between the heat exchange duct 510 and the mixing air duct 610 through the third partition 330. This can reduce the degree of temperature drop of the third partition 330, thereby reducing condensation on the side of the third partition 330 facing the mixing air duct 610, and further reducing water dripping or blowing from the indoor unit of the air conditioner.

[0090] Optionally, the chassis 210 is configured with a water receiving trough 220, and the first part of the third partition 330 is inserted into the water receiving trough 220.

[0091] The first part of the third partition 330 is inserted into the water receiving tank 220, which can prevent air from the heat exchange duct 510 from flowing to the mixing air duct 610 through the water receiving tank 220. In addition, the heat exchanger 400 is fixed to the third partition 330 and fixed to the chassis 210 through the third partition 330, which is beneficial to the fixation between the chassis 210 and the heat exchanger 400.

[0092] Optionally, the indoor unit of the air conditioner includes two partition components 300, which are respectively disposed at both ends of the air duct assembly 200. A heat exchange air duct 510 is defined between the two partition components 300, and two mixing air ducts 610 are defined between the two partition components 300 and the two ends of the air duct assembly 200.

[0093] The indoor unit of the air conditioner includes two partition components 300, which define a heat exchange air duct 510. Each partition component 300 forms a mixing air duct 610 with the side end of the housing 100 of the indoor unit. That is, the heat exchange air duct 510 is located between the two mixing air ducts 610. When the indoor unit is running, the air blown out from the mixing air ducts 610 on both sides mixes with the air blown out from the heat exchange air duct 510 in the middle and is then blown into the environment where the indoor unit is located. This arrangement can further improve the mixing effect of the indoor unit.

[0094] Optionally, when the indoor unit of the air conditioner includes two partition components 300, each partition component 300 includes a third partition 330, and the two third partitions 330 respectively fix the two ends of the heat exchanger 400.

[0095] When assembling the heat exchanger 400, the two third partitions 330 are fixed to both ends of the heat exchanger 400, and then assembled as a whole into the indoor unit of the air conditioner. This arrangement can further improve the fixation effect of the indoor unit of the air conditioner on the heat exchanger 400.

[0096] Optionally, if the indoor unit of the air conditioner includes two partition components 300, the indoor unit of the air conditioner includes two second cross-flow fan wheels 620, and the two second cross-flow fans are respectively disposed in two mixing air ducts 610.

[0097] This can further increase the air volume of the mixing duct 610, thereby improving the mixing effect of the indoor air conditioning unit.

[0098] Optionally, if the indoor unit of the air conditioner includes two second cross-flow fan impellers 620, the output shaft of the fan motor 730 is connected to one of the second cross-flow fan impellers 620.

[0099] Two second-stage impellers and one first cross-flow impeller 520 are assembled as an impeller assembly, with the fan motor 730 located on one side of the impeller assembly. This design facilitates the fan motor 730 in driving the first cross-flow impeller 520 and the second cross-flow impeller 620 to rotate, saving installation space and contributing to the miniaturization of the air conditioning indoor unit.

[0100] Optionally, the indoor unit of the air conditioner also includes a first swing blade 710, which corresponds to the air outlet of the mixing air duct 610 on the chassis 210. When the swing blade rotates to the first angle, the air blown out through the mixing air duct 610 deflects in the direction of the heat exchange air duct 510.

[0101] With the first swing blade 710, the air blown out through the mixing air duct 610 is more easily mixed with the air blown out through the heat exchange air duct 510.

[0102] Optionally, the indoor unit of the air conditioner also includes a second swing blade 720, which corresponds to the heating air duct being disposed at the air outlet of the chassis 210.

[0103] The unit is equipped with a second swing blade 720, which allows adjustment of the air outlet angle of the indoor unit. Furthermore, when the blade swings towards the mixing air duct 610, the air blown out through the heat exchange duct 510 mixes better with the air blown out through the mixing air duct 610. The second swing blade 720 and the first swing blade 710 work together to achieve a better mixing effect.

[0104] Optionally, the diameter of the second cross-flow impeller 620 is larger than the diameter of the first cross-flow impeller 520.

[0105] The rotation of the second cross-flow fan 620 will not interfere with the heat exchanger 400, and the second cross-flow fan 620 can be equipped with a larger diameter cross-flow fan. This configuration increases the airflow volume of the mixing duct, thereby improving the mixing effect of the indoor air conditioning unit.

[0106] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner indoor unit characterized by comprising: The air conditioner indoor unit comprises: a shell with an air inlet; an air duct assembly arranged in the shell, the air duct assembly defining an airflow passage communicating with the air inlet; a partition assembly arranged in the air duct assembly, the partition assembly separating the airflow passage into a heat exchange air duct and a mixed air duct; a first cross-flow fan wheel arranged in the heat exchange air duct; a second cross-flow fan wheel arranged in the mixed air duct, the second cross-flow fan wheel coaxially rotating with the first cross-flow fan wheel and being drivingly connected; wherein one of the first cross-flow fan wheel and the second cross-flow fan wheel is provided with a plug-in shaft extending in the axial direction, and the other is provided with a plug-in groove in the axial direction, the plug-in shaft extending through the communication hole and into the plug-in groove to drivingly connect the first cross-flow fan wheel and the second cross-flow fan wheel. 2.The indoor unit of the air conditioner according to claim 1, characterized by, The partition assembly comprises: a first partition plate arranged in the airflow passage, the first partition plate being provided with a communication hole, and the first cross-flow fan wheel and the second cross-flow fan wheel being drivingly connected through the communication hole.

3. The air conditioner indoor unit according to claim 2, wherein one side of the first partition plate facing the first cross-flow fan wheel is provided with a first groove, and one end of the first cross-flow fan wheel extends into the first groove; and / or one side of the first partition plate facing the second cross-flow fan wheel is provided with a second groove, and one end of the second cross-flow fan wheel extends into the second groove.

4. The air conditioner indoor unit according to claim 2, wherein the air duct assembly comprises a bottom plate provided with an air duct air outlet, and the air duct air outlet communicates with the air inlet through the airflow passage; the partition assembly further comprises: a second partition plate arranged at the air duct air outlet of the bottom plate, and the first partition plate and the second partition plate are spliced.

5. The air conditioner indoor unit according to claim 4, wherein the second partition plate is provided with a heat insulation cavity filled with heat preservation material; or the second partition plate is attached with heat preservation material.

6. The air conditioner indoor unit according to claim 4, wherein the second partition plate and the bottom plate are in an integrated structure. 7.The indoor unit of the air conditioner according to claim 4, characterized by, Further comprising: a heat exchanger arranged in the heat exchange air duct; the partition assembly further comprises: a third partition plate arranged in the air duct assembly and spliced with the first partition plate, one side surface of the third partition plate is provided with a fixing groove, and a plurality of refrigerant pipes of one end portion of the heat exchanger are embedded in the fixing groove.

8. The air conditioner indoor unit according to claim 7, wherein the bottom plate is provided with a water collecting groove, and a first portion of the third partition plate is inserted into the water collecting groove.

9. The air conditioner indoor unit according to any one of claims 1 to 8, comprising two partition assemblies arranged at two ends of the air duct assembly respectively, the heat exchange air duct is defined between the two partition assemblies, and the two mixed air ducts are defined between the two partition assemblies and the two end portions of the air duct assembly. ​

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