Indoor unit for air conditioner and air conditioner

Abstract

The utility model relates to the technical field of air conditioning, and discloses an indoor unit for an air conditioner and the air conditioner. The indoor unit for the air conditioner comprises a shell, an air inlet, an air outlet and an air outlet, the cross-flow fan is located in the air duct; the air duct is communicated between the cross-flow fan and the heat exchanger, and the cross-flow fan and the heat exchanger are sequentially arranged in the flowing direction of air flow in the air duct; the side wall of the air duct is provided with a pressure relief channel, and the pressure relief channel is communicated with the air duct and the outside of the air duct so as to stabilize the eccentric vortex of the cross-flow fan. The resistance in the air duct is reduced, the position of the eccentric vortex of the cross-flow fan does not move, and the size of the eccentric vortex can be prevented from being increased, so that the effective air outlet area of the impeller of the cross-flow fan can be ensured, the static pressure resistance of the air duct is improved, the air outlet amount of the cross-flow fan and the air duct is ensured, the size and the blade shape of the cross-flow fan do not need to be changed, and the cost is reduced. The cost is reduced, the size of the indoor unit is not changed, and the use universality of the indoor unit is improved.

Description

Technical Field

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

[0002] Currently, when the indoor unit uses a cross-flow fan, when the airflow in the air outlet duct of the cross-flow fan encounters high resistance, the eccentric vortex will deviate from its original position, resulting in an increase in the area of ​​the eccentric vortex and a decrease in the air outlet area of ​​the cross-flow fan. This leads to higher static pressure in the indoor unit and poor airflow.

[0003] Therefore, related technologies address the problem of high static pressure by increasing the fan diameter or changing the fan blade profile.

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

[0005] In related technologies, increasing the fan diameter or changing the blade shape to improve the static pressure resistance of the air duct will increase costs and reduce the versatility of the indoor unit.

[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. Utility Model Content

[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 unit and an air conditioner for use in air conditioning, which solves the problem that increasing the fan diameter or changing the blade shape in related technologies will increase costs, and improves the versatility of the indoor unit.

[0009] This disclosure provides an indoor unit for an air conditioner, comprising: a housing with an air duct formed inside the housing; a cross-flow fan located inside the air duct; and a heat exchanger. The air duct connects the cross-flow fan and the heat exchanger, and the cross-flow fan and the heat exchanger are arranged sequentially along the airflow direction within the air duct. A pressure relief channel is provided on the side wall of the air duct, connecting the ventilation duct and the outside of the air duct to stabilize the eccentric vortex of the cross-flow fan.

[0010] Optionally, the pressure relief channel is located downstream of the air duct.

[0011] Optionally, the pressure relief channel includes a first pressure relief channel located on the sidewall of the duct extending along its length; and / or, the pressure relief channel includes a second pressure relief channel located on the sidewall of the duct extending along its width.

[0012] Optionally, when the pressure relief channel includes a first pressure relief channel, the first pressure relief channel extends along the length direction of the air duct and matches the length of the air duct, or multiple first pressure relief channels are arranged at intervals along the length direction of the air duct; and / or, when the pressure relief channel includes a second pressure relief channel, the second pressure relief channel extends along the width direction of the air duct and / or multiple second pressure relief channels are arranged at intervals along the airflow direction of the air duct.

[0013] Optionally, the housing includes: a casing defining a receiving cavity having an air inlet and an air outlet; and an air duct defining an air outlet duct connected between the air inlet and the air outlet, the air duct being located within the receiving cavity; wherein the casing and the air duct defining an air outlet passage connected between a pressure relief passage and the outside of the casing, so that airflow within the air duct is discharged to the outside of the casing via the pressure relief passage and the air outlet passage.

[0014] Optionally, the air outlet includes a first air outlet and a second air outlet, the first air outlet being connected to the outlet of the air duct, and the second air outlet being connected to the outlet of the air outlet channel, with the first air outlet and the second air outlet being arranged adjacent to each other; and / or, a portion of the side wall of the air duct is recessed towards the inside of the air duct to form a relief groove, and the groove wall of the relief groove is provided with a pressure relief channel.

[0015] Optionally, the indoor unit for the air conditioner further includes: a support rib located within the air outlet duct and connected between the outer wall of the duct component and the inner wall of the casing, the support rib extending along the airflow direction within the air outlet duct and dividing the air outlet duct into multiple guide channels, each guide channel connecting the outlet of the pressure relief channel and the outlet of the air outlet duct; and / or, further includes: a baffle plate located within the air outlet duct and connected between the outer wall of the duct component and the inner wall of the casing, wherein the baffle plate is located on the side of the pressure relief channel away from the outlet of the air outlet duct.

[0016] Optionally, the air outlet duct is located on the side wall away from the air duct along the length of the air duct, and the first pressure relief duct is connected to the air outlet duct; and / or, the housing further includes: a side plate, located on the side wall away from the air duct along the width of the air duct, which, together with the air duct component, encloses the air outlet space, and the second pressure relief duct is connected to the air outlet space, while the air outlet space and the air outlet duct are not connected to each other.

[0017] Optionally, the pressure relief channel is in the form of a grid or perforation; and / or, along the flow direction of the airflow in the duct, the width of the pressure relief channel is less than or equal to half the width of the sidewall of the duct where the pressure relief channel is located.

[0018] This disclosure also provides an air conditioner, which includes an indoor unit for air conditioning as described in any of the above embodiments.

[0019] The indoor unit and air conditioner for air conditioning provided in this disclosure can achieve the following technical effects:

[0020] The indoor unit for air conditioning according to this embodiment has an air duct connecting the cross-flow fan and the heat exchanger. A pressure relief channel connecting the ventilation duct and the outside of the air duct is provided on the side wall of the air duct. This allows the vortex formed by the airflow with high resistance in the air duct to be discharged, making the airflow in the entire air duct smoother and the airflow field more stable. This reduces the resistance in the air duct, prevents the position of the eccentric vortex of the cross-flow fan from moving, and avoids the size of the eccentric vortex from increasing. This ensures the effective air outlet area of ​​the cross-flow fan impeller, making the eccentric vortex of the cross-flow fan match the airflow resistance in the air duct, improving the static pressure resistance of the air duct, and thus ensuring the air volume of the cross-flow fan and the air duct. Furthermore, it does not require changing the size and blade shape of the cross-flow fan, reducing costs, and does not change the size of the indoor unit, improving the versatility of the indoor unit.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a structural schematic diagram of an indoor unit for an air conditioner provided in an embodiment of this disclosure, from one perspective.

[0024] Figure 2 This is a structural schematic diagram from another perspective of an indoor unit for an air conditioner provided in an embodiment of this disclosure;

[0025] Figure 3 This is a partial structural schematic diagram of an indoor unit for an air conditioner provided in an embodiment of this disclosure;

[0026] Figure 4 yes Figure 3 A magnified structural diagram of part A in the middle;

[0027] Figure 5 This is a partial structural schematic diagram of an air duct component provided in an embodiment of this disclosure;

[0028] Figure 6 This is a cross-sectional structural schematic diagram of an indoor unit for an air conditioner provided in an embodiment of this disclosure;

[0029] Figure 7 This is a partial structural schematic diagram of another indoor unit for an air conditioner provided in an embodiment of this disclosure;

[0030] Figure 8 yes Figure 7 A magnified structural diagram of part B in the middle section;

[0031] Figure 9 This is a simulation diagram of an indoor unit for air conditioning that does not have a pressure relief channel.

[0032] Figure 10 This is a simulation diagram of an indoor unit for air conditioning with a pressure relief channel provided in an embodiment of this disclosure.

[0033] Figure label:

[0034] 10. Casing; 11. Air inlet; 12. Air outlet; 14. Side panel; 20. Air duct component; 21. Air duct; 211. Fan chamber; 212. Diffuser chamber; 213. Heat exchange chamber; 214. First air outlet; 30. Cross-flow fan; 40. Heat exchanger; 90. Pressure relief channel; 901. First pressure relief channel; 902. Second pressure relief channel; 903. Air outlet channel; 904. Second air outlet; 905. Support rib; 9051. Guide channel; 906. Baffle plate; 907. Air outlet space; 908. Clearance groove. 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., used 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 interchanged where appropriate for describing embodiments of this disclosure herein. 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] 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.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0042] For ease of description, the up, down, left, and right directions in this application are as follows: Figure 2 As shown, the length direction of the air duct or air duct component refers to the left-right direction, and the width or height direction of the air duct or air duct component refers to the up-down direction.

[0043] Combination Figures 1 to 8 As shown, this disclosure provides an indoor unit for an air conditioner, such as... Figure 6 As shown, the indoor unit for air conditioning includes a casing, a cross-flow fan 30, and a heat exchanger 40. An air duct 21 is formed inside the casing. The cross-flow fan 30 is located inside the air duct 21. The air duct 21 connects the cross-flow fan 30 and the heat exchanger 40, and the cross-flow fan 30 and the heat exchanger 40 are arranged sequentially along the airflow direction inside the air duct 21. A pressure relief channel 90 is provided on the side wall of the air duct 21, which connects the air duct 21 and the outside of the air duct 21 to stabilize the eccentric vortex of the cross-flow fan 30.

[0044] In this embodiment, the cross-flow fan 30 and heat exchanger 40 are arranged along the airflow direction within the duct 21. This reduces the distance between the cross-flow fan 30 and the air inlet 11 of the indoor unit, thus reducing airflow resistance. Furthermore, the heat exchanger 40 is located on the outlet side of the cross-flow fan, increasing the length of the duct 21 on the outlet side of the cross-flow fan 30. This increases the outlet area on the outlet side, allowing for a suitable reduction in the height of the duct 21 on the outlet side of the cross-flow fan 30, thereby reducing the overall thickness of the indoor unit. This facilitates indoor unit installation, reduces ceiling thickness, and improves the user experience. A pressure relief channel 90 is provided on the side wall of the air duct 21, connecting the air duct 21 to the outside. Since the heat exchanger 40 is located on the outlet side of the cross-flow fan 30, the outlet resistance within the air duct 21 is relatively high, causing airflow vortices to form within the air duct 21. The pressure relief channel 90 allows these airflow vortices to be discharged from the air duct 21, resulting in smoother airflow and a more stable airflow field. This also ensures smoother airflow at the cross-flow fan 30, preventing the eccentric vortex of the cross-flow fan 30 from moving away from the volute tongue due to excessive resistance within the air duct 21. The eccentric vortex remains stable in its original position, and its area does not increase. This guarantees the effective outlet area within the cross-flow fan 30, thereby ensuring airflow and improving the static pressure resistance of the air duct 21. Furthermore, this embodiment only requires opening a pressure relief channel 90 in the air duct 21, without changing the size and blade shape of the cross-flow fan 30, thus reducing costs and not changing the size of the indoor unit, thereby improving the versatility of the indoor unit.

[0045] Optionally, the air inlet 11 is located on the bottom wall of the casing and at the front of the bottom wall, while the air outlet 12 is located on the rear side wall of the casing. This allows the indoor unit to draw air in from the bottom, which then flows through the air duct 21, sequentially passing through the cross-flow fan 30 and the heat exchanger 40 before exiting through the air outlet 12. This not only facilitates the installation of the indoor unit but also reduces the resistance on the air inlet side of the cross-flow fan 30, allowing for a shorter air duct 21 and further reducing the height of the indoor unit. This reduces the ceiling thickness when the indoor unit is installed within the ceiling, freeing up more indoor space.

[0046] In some alternative embodiments, the pressure relief channel 90 connects the ventilation duct 21 to the external environment of the housing, so that the airflow in the ventilation duct 21 can be discharged to the external environment of the indoor unit, increasing the pressure difference and thus improving the smoothness of pressure relief.

[0047] In some alternative embodiments, a pressure relief space is defined within the housing, and the pressure relief channel 90 connects the ventilation duct 21 and the pressure relief space. This also enables the pressure relief of the ventilation duct 21. Within the pressure relief space, the ventilation duct 21 is not connected to the external environment of the housing, which can prevent air leakage and also prevent external dust from entering the ventilation duct 21.

[0048] Optionally, such as Figure 6 As shown, the pressure relief channel 90 is located downstream of the air duct 21.

[0049] In this embodiment, since the heat exchanger 40 is located at the end of the air duct 21, the airflow resistance near the heat exchanger 40 in the air duct 21 is relatively large. There are numerous or large vortices downstream of the air duct 21, which obstruct the air duct 21, reducing its flow area and increasing the airflow resistance. In this embodiment, a pressure relief channel 90 is provided downstream of the air duct 21. This allows the high-pressure vortices downstream of the air duct 21 to be discharged, resulting in smoother airflow within the air duct 21 and better stabilization of the position and area of ​​the eccentric vortex.

[0050] Combination Figure 9 and Figure 10 As shown, the simulation diagram of the indoor unit without a pressure relief channel is as follows: Figure 9 As shown, its eccentric vortex area is large and far from the volute tongue. After opening the pressure relief channel, as... Figure 10 As shown, the area of ​​the eccentric vortex is reduced, and the position of the eccentric vortex is closer to the volute tongue, and the overall air volume in the duct is greatly increased.

[0051] Optionally, the air duct 21 includes a fan chamber 211, a diffuser chamber 212, and a heat exchange chamber 213 connected sequentially along the airflow direction. The cross-flow fan 30 is located in the fan chamber 211, and the heat exchanger 40 is located in the heat exchange chamber 213. Along the airflow direction in the air duct 21, the height of the diffuser chamber 212 gradually increases, which can increase the flow area of ​​the diffuser chamber 212, reduce the flow velocity at the center of the air duct 21, thereby reducing the airflow velocity difference between the center of the air duct 21 and the periphery of the air duct 21, stabilizing the airflow, and reducing noise.

[0052] Optionally, the pressure relief channel 90 is located in the diffuser 212 and / or the heat exchanger 213, so that the pressure relief channel 90 can be as close as possible to the heat exchanger 40 to discharge the high-pressure airflow vortex and improve the stabilizing effect on the eccentric vortex.

[0053] Optionally, when the pressure relief channel 90 is located in the diffuser chamber 212, the pressure relief channel 90 is located downstream of the diffuser chamber 212.

[0054] Optionally, such as Figure 3 and Figure 4 As shown, the pressure relief channel 90 includes a first pressure relief channel 901, which is located on the side wall of the air duct 21 extending along its length.

[0055] In this embodiment, the axial length of the cross-flow fan 30 is relatively long. A first pressure relief channel 901 is opened in the direction of the duct 21 extending along its length. That is, the first pressure relief channel 901 is opened in the top wall and / or bottom wall of the duct 21. This allows pressure relief to be carried out in the length direction of the duct 21. This can stabilize the eccentric vortex of the cross-flow fan 30 in the length direction, so that the airflow in the duct 21 is more uniform in the length direction, and further ensures the air volume.

[0056] Optionally, such as Figure 5 , Figure 7 and Figure 8 As shown, the pressure relief channel 90 includes a second pressure relief channel 902, which is located on the side wall of the air duct 21 extending in the width direction.

[0057] In this embodiment, a second pressure relief channel 902 is provided on the side wall of the air duct 21 extending along the width direction. That is, the second pressure relief channel 902 is provided on the left side wall and / or the right side wall of the air duct 21. This allows the pressure of the vortex in the air duct 21 to be relieved from both sides of the width of the air duct 21. This can also effectively reduce the resistance in the air duct 21, improve the smoothness of the airflow in the air duct 21, stabilize the position and area of ​​the eccentric vortex of the cross-flow fan 30, and increase the air volume in the air duct 21.

[0058] In one specific embodiment, the sidewalls of the air duct 21 extending along the length direction and the sidewalls of the air duct 21 extending along the width direction are provided with pressure relief channels 90. This allows pressure to be relieved from multiple directions of the air duct 21, improving the pressure relief rate and making the airflow in the air duct 21 flow more evenly in multiple directions, thus ensuring the heat exchange effect.

[0059] Optionally, such as Figure 4 As shown, when the pressure relief channel 90 includes a first pressure relief channel 901, the first pressure relief channel 901 extends along the length direction of the air duct 21 and matches the length of the air duct 21, or multiple first pressure relief channels 901 are arranged sequentially at intervals along the length direction of the air duct 21.

[0060] In this embodiment, the first pressure relief channel 901 can be configured to match the length of the air duct 21. Matching here means that the length of the first pressure relief channel 901 is equal to or similar to the length of the air duct 21. This allows for uniform pressure relief along the length of the air duct 21, improving its pressure relief capacity. Alternatively, multiple first pressure relief channels 901 can be configured. This ensures both effective pressure relief along the length of the air duct 21 and maintains the length of the sidewalls of the air duct 21, preventing deformation or damage to the air duct 21.

[0061] Optionally, when the pressure relief channel 90 includes a second pressure relief channel 902, the second pressure relief channel 902 extends along the width direction of the air duct 21 and / or multiple second pressure relief channels 902 are arranged sequentially at intervals along the airflow direction of the air duct 21.

[0062] In this embodiment of the present disclosure, the second pressure relief channel 902 is provided on the side wall of the air duct 21 extending in the width direction. The second pressure relief channel 902 extends in the width direction of the air duct 21 or multiple second pressure relief channels 902 are provided in the direction of airflow. This can increase the pressure relief area and ensure the air volume.

[0063] Optionally, the pressure relief channel 90 is in the form of a grid or perforations.

[0064] Optionally, the pressure relief channel 90 is in the form of micropores.

[0065] Optionally, the housing includes a casing 10 and an air duct component 20. The casing 10 defines a receiving cavity having an air inlet 11 and an air outlet 12. The air duct component 20 defines an air outlet duct 21, which connects the air inlet 11 and the air outlet 12. The air duct component 20 is located within the receiving cavity. The casing 10 and the air duct component 20 define an air outlet passage 903, which connects the pressure relief passage 90 and the outside of the casing 10, so that the airflow within the air duct 21 is discharged to the outside of the casing 10 through the pressure relief passage 90 and the air outlet passage 903. Figure 6 As shown, the thick arrow indicates the airflow direction within the air duct 21, and the thin arrow indicates the airflow direction within the air outlet duct 903.

[0066] In this embodiment, the airflow discharged from the pressure relief channel 90 is discharged to the outside of the casing 10 through the air outlet channel 903, which is beneficial to the indoor airflow circulation speed of the indoor unit and speeds up the time for the indoor unit to reach the desired temperature.

[0067] Optionally, the pressure relief space includes an air outlet duct 21.

[0068] Optionally, such as Figure 2 and Figure 6 As shown, the air outlet 12 includes a first air outlet 214 and a second air outlet 904. The first air outlet 214 is connected to the outlet of the air duct 21, and the second air outlet 904 is connected to the outlet of the air outlet channel 903. The first air outlet 214 and the second air outlet 904 are arranged adjacent to each other.

[0069] In this embodiment, the airflow discharged from the pressure relief channel 90 is discharged to the outside of the casing 10 through the second air outlet 904, and the heat exchange airflow in the air duct 21 is discharged to the outside of the casing 10 through the first air outlet 214. This allows air to also be discharged from the second air outlet 904, which can improve the indoor circulation speed and speed up the indoor temperature rise time. In addition, the first air outlet 214 and the second air outlet 904 are arranged adjacent to each other, so that the air discharged from the first air outlet 214 and the second air outlet 904 can be mixed. This can form a uniform airflow, which can prevent the airflow temperature at the air outlet 12 from being too low and improve user comfort.

[0070] Optionally, the first air outlet 214 and the second air outlet 904 are located on the same side wall of the housing. This facilitates the arrangement of the first air outlet 214 and the second air outlet 904.

[0071] Optionally, when the air outlet 12 is located on the rear or front side wall of the housing, the first air outlet 214 and the second air outlet 904 are arranged sequentially in the vertical direction.

[0072] Optionally, when the pressure relief channel 90 includes a first pressure relief channel 901, the first pressure relief channel 901 is located on the top wall of the air duct 21. Since a water receiving tray is provided below the heat exchanger 40, the first pressure relief channel 901 is opened on the top wall of the air duct 21. In this way, the first pressure relief channel 901 can be set close to the heat exchanger 40, which improves the pressure relief amount and pressure relief effect, and will not interfere with the water receiving tray.

[0073] Optionally, when the first pressure relief channel 901 is located on the top wall of the air duct 21, the top wall of the housing 10 and the top wall of the air duct component 20 enclose an air outlet channel 903. The air outlet channel 903 extends along the flow direction of the airflow within the air duct 21 and is located above the air duct 21. Furthermore, the second air outlet 904 is located above the first air outlet 214. This allows the airflow from the second air outlet 904 to accelerate the airflow from the first air outlet 214, thereby increasing the circulation speed of the indoor airflow. Additionally, the location of the second air outlet 904 above the first air outlet 214 facilitates even airflow between the two outlets, improving airflow comfort.

[0074] Optionally, the second air outlet 904 is provided with a guide plate, which is movably disposed in the second air outlet 904. The guide plate is used to adjust the air outlet direction of the second air outlet 904. When the second air outlet 904 emits air, the guide plate can tilt towards the first air outlet 214 along the air outlet direction of the second air outlet 904. In this way, the guide plate can guide the airflow from the second air outlet 904 to the first air outlet 214, so as to achieve uniform air outlet 12.

[0075] Optionally, the side wall portion of the air duct 21 is recessed towards the inside of the air duct 21 to form a relief groove 908, and the groove wall of the relief groove 908 is provided with a pressure relief channel 90.

[0076] In this embodiment of the present disclosure, a clearance groove 908 is formed on the side wall corresponding to the outlet of the pressure relief channel 90. The clearance groove 908 can reduce the flow resistance of the airflow discharged from the pressure relief channel 90, thereby improving the airflow smoothness of the air outlet channel 903.

[0077] Optionally, such as Figure 3 and Figure 6 As shown, the indoor unit for air conditioning also includes a support rib 905, which is located in the air outlet duct 903 and connected between the outer wall of the air duct component 20 and the inner wall of the casing 10. The support rib 905 extends along the airflow direction in the air outlet duct 903 and divides the air outlet duct 903 into multiple guide channels 9051. Each guide channel 9051 is connected between the outlet of the pressure relief channel 90 and the outlet of the air outlet duct 903.

[0078] In this embodiment, the support rib 905 is positioned between the outer wall of the air duct component 20 and the inner wall of the housing 10, thereby increasing the strength of the housing and preventing deformation of the housing 10 and the air duct component 20. Simultaneously, the support rib 905 divides the airflow into multiple guide channels 9051, which facilitate the flow of air discharged from the pressure relief channel 90 to the outside of the housing 10, thus guiding the airflow and preventing blockage within the air outlet channel 903.

[0079] Optionally, there are multiple support ribs 905, which are arranged sequentially and at intervals along the length of the air duct 21. This can improve the strength of the housing 10 and the air duct component 20, and can separate multiple airflow channels 9051, making the airflow in the length of the air duct 21 more uniform.

[0080] Optionally, when the first pressure relief channel 901 is grid-shaped, the first pressure relief channel 901 includes pressure relief grids that extend along the length of the air duct 21, and there are multiple pressure relief grids arranged sequentially along the airflow direction within the air duct 21. Here, the grid-shaped pressure relief channel 901 can increase the pressure relief amount and speed, and prevent airflow accumulation within the air duct 21.

[0081] Optionally, the support rib 905 is connected between multiple pressure relief grilles. In this way, the support rib 905 can not only guide the airflow out of the pressure relief grilles, but also strengthen the side wall of the air duct 21 and prevent the side wall of the air duct 21 from deforming.

[0082] Optionally, the indoor unit for the air conditioner also includes a baffle 906, which is disposed in the air outlet duct 21 and is connected between the outer wall of the duct component 20 and the inner wall of the housing 10. The baffle 906 is located on the side of the pressure relief channel 90 away from the outlet of the air outlet duct 903.

[0083] In this embodiment of the present disclosure, the baffle 906 is located on the side of the pressure relief channel 90 away from the outlet of the air outlet channel 903. In this way, the baffle 906 can prevent the airflow from flowing toward the side away from the outlet of the air outlet channel 903, so that the airflow discharged from the pressure relief channel 90 can flow out through the air outlet channel 903 and the second air outlet 904.

[0084] Optionally, the air outlet duct 903 is located on the side wall of the air duct 21 away from the air duct 21 along its length, and the first pressure relief duct 901 is connected to the air outlet duct 21. In this way, when the side wall of the air duct 21 extending along its length is provided with the first pressure relief duct 901, the first pressure relief duct 901 is connected to the outside of the housing 10 through the air outlet duct 903, so that the airflow discharged from the first pressure relief duct 901 can flow out quickly, improving the pressure relief speed.

[0085] Optionally, the pressure relief channel includes a first pressure relief channel, and when the first pressure relief channel is located on the top wall of the air duct, the air outlet channel is located above the air duct, the second air outlet is located above the first air outlet, and the support ribs and baffles extend in the vertical direction.

[0086] Optionally, such as Figure 7 and Figure 8 As shown, the housing 10 also includes a side plate 14, which is located on the side wall of the air duct 21 away from the air duct 21 in the width direction, and together with the air duct component 20, forms an air outlet space 907. The second pressure relief channel 902 is connected to the air outlet space 907.

[0087] In this embodiment of the present disclosure, when the pressure relief channel 90 includes a second pressure relief channel 902, the second pressure relief channel 902 is disposed on the side wall of the air duct 21, and an air outlet space 907 is provided on the wide side wall of the air duct component 20, so that the airflow discharged from the second pressure relief channel 902 can be discharged into the air outlet space 907.

[0088] Optionally, the pressure relief space includes the air outlet space 907.

[0089] Optionally, the air outlet space 907 and the air outlet channel 903 are not connected to each other. That is to say, the pressure relief paths of the first pressure relief channel 901 and the second pressure relief channel 902 are independent of each other, so that the airflow will not interfere with each other or cause airflow turbulence.

[0090] In some optional embodiments, the housing 10 includes a top wall, a bottom wall, a front side wall, and a rear side wall. The front side wall, rear side wall, top wall, bottom wall, side plate 14, and the side wall of the air duct component 20 extending in the width direction enclose an air outlet space 907. That is, the air outlet space 907 is a relatively closed space. The air outlet space 907 does not have an exhaust port connecting to the outside of the housing 10. Since the second pressure relief channel 902 is located on the side wall in the width direction of the air duct 21, the pressure relief is small. Therefore, the airflow discharged from the second pressure relief channel 902 to the air outlet space 907 can overflow to the outside of the housing 10 at the connection of the multiple side walls of the air outlet space 907. This can achieve pressure relief and vortex stabilization without affecting the strength of the housing 10 and preventing deformation of the housing 10.

[0091] In some alternative embodiments, the air outlet space 907 is provided with a third air outlet 12, which connects the air outlet space 907 and the outside of the housing 10. In this way, the airflow discharged from the second pressure relief channel 902 can also be discharged to the outside of the housing 10, thereby increasing the pressure relief speed of the second pressure relief channel 902.

[0092] In some alternative embodiments, the side plate 14 includes a side plate 14 body and a connecting plate. The connecting plate is located on the side of the side plate 14 body facing the air duct component 20 and extends towards the air duct component 20. The connecting plate is connected to the side wall of the air duct component 20 extending in the width direction away from the air duct 21, and the connecting plate is located at the outer edge of the second pressure relief channel 902. There are multiple connecting plates, and the multiple connecting plates and the air duct component 20 enclose an air outlet space 907. This can also form a relatively sealed space and prevent airflow from flowing to other components such as the cross-flow fan 30.

[0093] Optionally, along the flow direction of the airflow in the duct 21, the width of the pressure relief channel 90 is less than or equal to half the width of the side wall of the duct 21 where the pressure relief channel 90 is located.

[0094] In this embodiment, when the width of the pressure relief channel 90 is greater than half the width of the side wall of the air duct 21 where the pressure relief channel 90 is located, the opening area of ​​the pressure relief channel 90 is too large, and the air duct 21 is prone to air leakage, affecting the air volume. Therefore, making the width of the pressure relief channel 90 less than or equal to half the width of the side wall of the air duct 21 where the pressure relief channel 90 is located can ensure the air volume, stabilize the eccentric vortex, avoid excessive resistance, and improve the smoothness of airflow.

[0095] Optionally, the air duct 21 is further provided with guide ribs, which are located on the inner wall of the air duct 21. The guide ribs include one or more first guide ribs, with at least one first guide rib located in the middle of the length of the air duct. When air flows through the air duct 21 to the first guide rib, the first guide rib can rectify the airflow, making the airflow within the air duct 21 approximately uniformly distributed along the length of the air duct. This stabilizes the position of the eccentric vortex, prevents eccentric vortex movement, avoids backflow, and thus reduces noise. Furthermore, the method of using first guide ribs is low-cost and easy to implement.

[0096] Optionally, there may be multiple first guide ribs, which are arranged sequentially along the length of the air duct 21. The more uniformly the first guide ribs are distributed along the length of the air duct 21, the better the rectification effect. Specifically, the multiple first guide ribs are located on opposite sides of the at least one first guide rib and / or the distance between two adjacent first guide ribs is greater than or equal to 30mm and less than or equal to 120mm. Here, a distance of less than 30mm between two adjacent first guide ribs would be too dense, increasing airflow resistance, while a distance greater than 120mm between two adjacent first guide ribs would result in a poorer rectification effect.

[0097] Optionally, the guide ribs extend along the airflow direction within the air duct 21. This facilitates guiding airflow and achieving rectification.

[0098] Optionally, the guide rib includes a first end and a second end arranged sequentially along the airflow direction. Along the airflow direction within the air duct 21, the first end is inclined towards the center of the air duct 21 and / or the second end is inclined away from the center of the air duct 21. This reduces the resistance of the guide rib's ends to the airflow.

[0099] Optionally, the inner wall surface of the top wall and / or the inner wall surface of the bottom wall of the air duct are provided with first guide ribs. In this way, the airflow can be rectified in both the vertical and horizontal directions of the air duct 21.

[0100] Optionally, the first guide ribs on the inner wall of the top wall of the air duct and the first guide ribs on the inner wall of the bottom wall of the air duct are staggered to further improve the rectification effect.

[0101] Optionally, the guide ribs also include second guide ribs, with the second guide ribs provided on the inner wall surface of the left side wall and / or the inner wall surface of the right side wall of the air duct 21. In this way, the air duct 21 can also rectify the airflow in the left and right directions.

[0102] This disclosure also provides an air conditioner, which includes an indoor unit for use as described in any of the above embodiments.

[0103] The air conditioner of this disclosure includes the indoor unit of any of the above embodiments, and therefore has the beneficial effects of the indoor unit of any of the above embodiments, which will not be repeated here.

[0104] Optionally, the air conditioner also includes an outdoor unit, which is connected to the indoor unit via refrigerant piping. The indoor unit can be a ducted air conditioner or other types of air conditioners.

[0105] 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 indoor unit for an air conditioner, characterized in that, include: The shell has an internal air duct. Cross-flow fans are located inside the air duct; The heat exchanger and the air duct connect the cross-flow fan and the heat exchanger, and the cross-flow fan and the heat exchanger are arranged in sequence along the airflow direction in the air duct. The side wall of the air duct is provided with a pressure relief channel, which connects the air duct to the outside of the air duct to stabilize the eccentric vortex of the cross-flow fan.

2. The indoor unit for an air conditioner according to claim 1, characterized in that, The pressure relief channel is located downstream of the air duct.

3. The indoor unit for an air conditioner according to claim 1, characterized in that, The pressure relief channel includes a first pressure relief channel located on the side wall of the duct extending along its length; and / or, the pressure relief channel includes a second pressure relief channel located on the side wall of the duct extending along its width.

4. The indoor unit for an air conditioner according to claim 3, characterized in that, When the pressure relief channel includes a first pressure relief channel, the first pressure relief channel extends along the length of the air duct and matches the length of the air duct, or multiple first pressure relief channels are arranged sequentially at intervals along the length of the air duct; and / or, When the pressure relief channel includes a second pressure relief channel, the second pressure relief channel extends along the width direction of the air duct and / or multiple second pressure relief channels are arranged sequentially at intervals along the airflow direction of the air duct.

5. The indoor unit for an air conditioner according to claim 3, characterized in that, The housing includes: The housing defines a cavity with an air inlet and an air outlet; The air duct component defines the air outlet duct, which connects the air inlet and the air outlet, and is located within the receiving cavity. The casing and air duct components define an air outlet channel, which connects the pressure relief channel and the outside of the casing, so that the airflow in the air duct passes through the pressure relief channel and the air outlet channel to the outside of the casing.

6. The indoor unit for an air conditioner according to claim 5, characterized in that, The air outlet includes a first air outlet and a second air outlet. The first air outlet is connected to the outlet of the air duct, and the second air outlet is connected to the outlet of the air outlet channel. The first air outlet and the second air outlet are arranged adjacent to each other; and / or, The side wall of the air duct is recessed towards the inside of the air duct to form a relief groove, and the groove wall has a pressure relief channel.

7. The indoor unit for an air conditioner according to claim 5, characterized in that, Also includes: The support ribs are located inside the air outlet duct and connect the outer wall of the air duct component and the inner wall of the casing. The support ribs extend along the airflow direction in the air outlet duct and divide the air outlet duct into multiple guide channels. Each guide channel is connected between the outlet of the pressure relief channel and the outlet of the air outlet duct. And / or, Also includes: A baffle plate is installed inside the air outlet duct, connecting the outer wall of the duct component and the inner wall of the housing. The baffle plate is located on the side of the pressure relief channel away from the outlet of the air outlet duct.

8. The indoor unit for an air conditioner according to claim 5, characterized in that, The air outlet duct is located on the side wall away from the air duct along the length of the duct, and the first pressure relief duct is connected to the air outlet duct. And / or, The casing also includes: The side panel is located on the side wall away from the air duct in the width direction of the air duct, and it encloses the air outlet space with the air duct components. The second pressure relief channel is connected to the air outlet space, but the air outlet space and the air outlet channel are not connected to each other.

9. The indoor unit for an air conditioner according to any one of claims 1 to 8, characterized in that, The pressure relief channel is in the form of a grid or perforations; and / or, Along the direction of airflow within the duct, the width of the pressure relief channel is less than or equal to half the width of the duct sidewall where the pressure relief channel is located.

10. An air conditioner, characterized in that, Including an indoor unit for air conditioning as described in any one of claims 1 to 9.

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