Air conditioner indoor unit and air conditioner

Abstract

An air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises: a case shell, the case shell being internally provided with a plurality of mounting positions; and a refrigerant sensor, detachably mounted at any one mounting position of the plurality of mounting positions. The air conditioner indoor unit of the present disclosure is provided with the plurality of mounting positions in the case shell, such that when a mounting direction of the air conditioner indoor unit is changed due to limitation of a building space structure, the mounting positions matched with different mounting directions can be selected, and the refrigerant sensor is assembled on said mounting position, so as to make the position of the refrigerant sensor adjustable, allowing the arrangement of the refrigerant sensor to be matched with the mounting direction of the air conditioner indoor unit, and ensuring that the refrigerant sensor can effectively detect a refrigerant leakage fault in time.

Description

Air conditioner indoor unit and air conditioner

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of the following patent applications, the entire contents of which are incorporated herein by reference:

[0003] A Chinese patent application entitled “Air Conditioning Indoor Unit and Air Conditioner”, application number 202321662686.1, submitted to the State Intellectual Property Office of China on June 27, 2023. Technical Field

[0004] The present application relates to the technical field of household appliances, and in particular to an air conditioner indoor unit and an air conditioner. Background Art

[0005] As the air-conditioning industry's requirements for environmental protection increase, the environmental performance of the refrigerants used has gradually improved. For example, refrigerants with low global warming potential, such as R290 (propane) and R32, are widely used in refrigeration and dehumidification systems such as air conditioners.

[0006] When using flammable refrigerants, the indoor unit is placed indoors. If a leak occurs, combustion or even explosion is very likely to occur in the relatively confined space, causing serious safety accidents. To avoid the dangers of flammable refrigerants, it is necessary to be able to detect refrigerant leaks in a timely manner.

[0007] Application Contents

[0008] The purpose of the present disclosure is to at least solve the problem of refrigerant leak detection failure caused by the refrigerant sensor being in a low concentration area. This purpose is achieved through the following technical solutions:

[0009] A first aspect of the present disclosure provides an air conditioner indoor unit, comprising: a chassis shell having a plurality of mounting positions provided therein; and a refrigerant sensor detachably mounted at any one of the plurality of mounting positions.

[0010] According to the air-conditioning indoor unit disclosed in the present invention, by setting multiple installation positions inside the chassis shell, when the installation direction of the air-conditioning indoor unit is changed due to the limitation of the building space structure, the installation position suitable for different installation directions can be selected, and the refrigerant sensor can be installed on the installation position, so that the position of the refrigerant sensor can be adjusted, and the setting of the refrigerant sensor is matched with the installation direction of the air-conditioning indoor unit, ensuring that the refrigerant sensor can detect refrigerant leakage faults in a timely and effective manner.

[0011] In addition, the air conditioner indoor unit according to the present disclosure may also have the following additional technical features:

[0012] In some embodiments of the present disclosure, the chassis shell includes a return air inlet and an air outlet arranged relative to each other along a first direction, and the multiple mounting positions are arranged in a first area within the chassis shell, and along the first direction, the first area has a first boundary close to the return air inlet; the air-conditioning indoor unit also includes a heat exchanger, which is arranged in the chassis shell, and along the first direction, the heat exchanger has a first end close to the return air inlet and a second end facing away from the return air inlet; the first boundary is located between the first end and the second end.

[0013] In some embodiments of the present disclosure, any one of the installation positions is located on a side of the heat exchanger facing away from the return air outlet.

[0014] In some embodiments of the present disclosure, the first area also has a second boundary close to the air outlet; the air-conditioning indoor unit also includes a fan, which is arranged in the chassis shell and located between the air outlet and the heat exchanger. Along the first direction, the wind wheel of the fan has a center point; the second boundary is located between the center point and the heat exchanger.

[0015] In some embodiments of the present disclosure, the fan includes a centrifugal fan, and the centrifugal fan is provided with an air inlet at at least one end along the second direction, and the mounting position is arranged close to the air inlet along the second direction; wherein the second direction is perpendicular to the first direction.

[0016] In some embodiments of the present disclosure, a weld is provided between the heat exchange tube and the tube sheet of the heat exchanger, and any one of the mounting positions is arranged close to the weld along a third direction; wherein the third direction is perpendicular to the first direction.

[0017] In some embodiments of the present disclosure, there is a weld between the heat exchange tube and the tube sheet of the heat exchanger; the multiple mounting positions include a first mounting position, which is located between the fan and the heat exchanger, and along the first direction, at least part of the first mounting position is overlapped with the weld.

[0018] In some embodiments of the present disclosure, the plurality of mounting positions include a second mounting position, and the second mounting position and the first mounting position are respectively located on two opposite inner walls of the chassis shell.

[0019] In some embodiments of the present disclosure, the plurality of mounting positions include a third mounting position, which is provided on the heat exchanger and is located between the first end and the second end.

[0020] In some embodiments of the present disclosure, the air-conditioning indoor unit further includes a water collecting pan, which is disposed below the heat exchanger and between the heat exchanger and the fan; the multiple mounting positions include a fourth mounting position, which is disposed between the water collecting pan and the fan along the first direction.

[0021] In some embodiments of the present disclosure, along the first direction, a dimension between the first end and the second end is L, and a distance between the first boundary and the first end is h, where L=3h.

[0022] According to a second aspect of the present disclosure, an air conditioner is further provided, comprising any one of the above-mentioned air conditioner indoor units. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0024] FIG1 schematically shows a structural diagram of an air-conditioning indoor unit according to some embodiments of the present disclosure;

[0025] FIG2 schematically shows a partial structural diagram of an air-conditioning indoor unit according to some embodiments of the present disclosure;

[0026] FIG3 schematically shows a partial structural diagram of an air-conditioning indoor unit according to some embodiments of the present disclosure;

[0027] FIG4 schematically shows a partial structural diagram of an air-conditioning indoor unit according to other embodiments of the present disclosure;

[0028] FIG5 schematically shows a partial structural diagram of an air-conditioning indoor unit according to some embodiments of the present disclosure;

[0029] FIG6 schematically shows a partial structural diagram of an air-conditioning indoor unit according to some embodiments of the present disclosure;

[0030] FIG7 schematically shows a partial structural diagram of an air-conditioning indoor unit according to some embodiments of the present disclosure.

[0031] The accompanying drawings are numbered as follows: 100, air conditioner indoor unit; 20, chassis shell; 201, side panel; 2011, first side panel; 2012, second side panel; 2013, third side panel; 2014, fourth side panel; 202, top panel; 203, bottom panel; 204, water tray; 205, support bar; 210, return air outlet; 211, air outlet; 220, first area; 221, first boundary; 222, second boundary; 230, mounting position; 231, first mounting position; 232, second mounting position; 233, third mounting position; 234, fourth mounting position; 30, heat exchanger; 31, first end; 32, second end; 33, weld; 40, fan; 41, center point; 42, air inlet; 50, refrigerant sensor. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0034] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0035] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0036] In existing equipment, a refrigerant sensor is installed in the indoor unit to detect the refrigerant concentration in the environment where the air conditioner is located, and then determine whether there is a refrigerant leakage. However, the refrigerant is unevenly distributed due to the influence of gravity and the airflow of the indoor unit. Due to the limitation of the installation space, the installation direction of the indoor unit needs to be adjusted according to actual needs, such as changing the upright setting of the indoor unit to a lying setting, etc. In the event of a refrigerant leakage, the refrigerant concentration distribution in the indoor unit under different installation directions is different. Since the position of the refrigerant sensor in the indoor unit is relatively fixed, when the installation direction of the indoor unit is changed, the setting position of the refrigerant sensor may be in a low concentration area, resulting in detection failure of the refrigerant sensor.

[0037] As shown in FIG. 1 and FIG. 2 , according to an embodiment of the present disclosure, an air conditioner indoor unit is provided.

[0038] The air-conditioning indoor unit 100 includes a chassis shell 20 and a refrigerant sensor 50, wherein the chassis shell 20 includes a connected side panel 201, a bottom panel 203 and a top panel 202, and the side panels 201, the top panel 202 and the bottom panel 203 together form a rectangular structure, and the side panel 201 includes a first side panel 2011, a second side panel 2012, a third side panel 2013 and a fourth side panel 2014 connected in sequence.

[0039] A plurality of mounting positions 230 are provided in the chassis shell 20, and the refrigerant sensor 50 is detachably installed in one of the plurality of mounting positions 230. By providing a plurality of mounting positions 230 inside the chassis shell 20, when the installation direction of the air-conditioning indoor unit 100 is changed due to the limitation of the building space structure, a mounting position 230 suitable for different installation directions can be selected, and the refrigerant sensor 50 can be assembled on the mounting position 230, so that the position of the refrigerant sensor 50 can be adjusted, so that the setting of the refrigerant sensor 50 matches the installation direction of the air-conditioning indoor unit 100, and ensures that the refrigerant sensor 50 can detect the refrigerant leakage fault in a timely and effective manner.

[0040] It is understandable that the mounting position 230 can be set on the side panel, or on other connecting parts or supporting parts connected to the side panel. The mounting position 230 can be at least one of the through holes, blind holes, grooves, protrusions and other structures set on the side panel, so as to facilitate the refrigerant sensor 50 to be detachably installed on the mounting position 230.

[0041] Alternatively, the mounting position 230 may be a connector having an assembly structure connected to the side panel. The connector may be a plate-shaped member, and the assembly structure may be at least one of a through hole, a blind hole, a groove, a protrusion, a snap, a screw hole, and the like, so as to facilitate the refrigerant sensor 50 to be detachably installed in the mounting position 230.

[0042] It should be noted that the plurality of mounting positions 230 are distributed in different areas of the chassis housing 20 so that the refrigerant sensor 50 has more mountable positions.

[0043] In some embodiments, as shown in Figures 2 and 3, a return air inlet 210 and an air outlet 211 are respectively provided on opposite sides of the chassis shell 20, wherein the return air inlet 210 is provided on the bottom plate 203, and the air outlet 211 is provided on the top plate, and multiple mounting positions 230 are provided in the first area 220 in the chassis shell 20. The first area 220 specifically refers to the area provided on the first side panel, the second side panel, the third side panel and the third side panel that can be used to set the mounting position 230. When the refrigerant sensor 50 is installed in the mounting position 230 in the first area 220, it will not interfere with other devices.

[0044] Furthermore, the air-conditioning indoor unit 100 also includes a heat exchanger 30, which is arranged in the chassis shell 20. Along the first direction, the heat exchanger 30 has a first end 31 close to the return air outlet 210 and a second end 32 away from the return air outlet 210. Along the first direction, the first area 220 has a first boundary 221 close to the return air outlet 210 and a second boundary 222 close to the air outlet 211. The first boundary 221 and the second boundary 222 are both at the edge of the first area 220 in the first direction, and the first boundary 221 is located between the first end 31 and the second end 32; wherein the first direction is the direction from the return air outlet 210 to the air outlet 211.

[0045] In this embodiment, by setting the first boundary 221 between the first end 31 and the second end 32, it is avoided that the installation position 230 is set at a position too close to the return air outlet 210. The reason is that when the air-conditioning indoor unit 100 is running, the external air flow enters the chassis shell 20 from the return air outlet 210, which will blow the leaked refrigerant to the side of the air outlet 211. Therefore, when the position is too close to the return air outlet 210, the concentration of the refrigerant is low, which is not conducive to timely and effective detection of refrigerant leakage.

[0046] Furthermore, since the airflow entering the chassis shell 20 from the return air inlet 210 will drive the leaked refrigerant to the side away from the return air inlet 210 when passing through the heat exchanger 30, any installation position 230 is set on the side of the heat exchanger 30 away from the return air inlet 210, so that the refrigerant sensor 50 is located in the area on the side with higher refrigerant concentration, so as to improve the sensitivity of detecting refrigerant leakage.

[0047] In some embodiments of the present disclosure, as shown in Figures 3, 4 and 5, the air conditioner indoor unit 100 further includes a fan 40, which is disposed in the chassis housing 20 and between the air outlet 211 and the heat exchanger 30. The fan 40 is used to drive the air in the chassis housing 20 to flow from one side of the return air port 210 to one side of the air inlet 42. Along the first direction, the wind wheel of the fan 40 has a center point 41, which is the middle position of the air cooling of the fan 40, so that the second boundary 222 is located between the center point 41 and the heat exchanger 30, and the first boundary 221 is set at 1 / 3 of the distance from the first end 31 of the heat exchanger 30, that is, along the first direction, the first end 31 and the second end The dimension between 32 is L, and the distance between the first boundary 221 and the first end 31 is h, where L=3h. When the air-conditioning indoor unit 100 is placed upright, the first area 220 is located as a whole in the area below the middle of the fan 40 and above the middle of the heat exchanger 30. In this area, since the density of the flammable refrigerant is greater than that of the air, it is easy to sink under the influence of gravity, and under the joint action of the fan 40, the refrigerant will move upward to the wind wheel, so that when the refrigerant leaks, the leaked refrigerant is gathered in the first area 220 under the joint action of gravity and the fan 40. Setting the installation position 230 in the first area 220 is beneficial to improving the sensitivity of the refrigerant sensor 50.

[0048] In an exemplary embodiment, as shown in Figures 3 and 5, the fan 40 is a centrifugal fan, the axis of the wind wheel of the centrifugal fan is arranged perpendicular to the first direction, and in the second direction, at least one end of the centrifugal fan is provided with an air inlet 42, and along the second direction, the mounting position 230 is arranged close to the air inlet 42, so that the mounting position 230 is further close to the refrigerant accumulation area, thereby improving the sensitivity of the refrigerant sensor 50.

[0049] In some embodiments, when the centrifugal fan is a single-inlet centrifugal fan, the centrifugal fan is provided with an air inlet 42 at only one end in the second direction. In other embodiments, when the centrifugal fan is a dual-inlet centrifugal fan, the centrifugal fan is provided with an air inlet 42 at both ends in the second direction.

[0050] In this embodiment, the second direction is perpendicular to the first direction.

[0051] In some embodiments of the present disclosure, as shown in Figure 5, a weld 33 is provided between the heat exchange tube and the tube sheet of the heat exchanger 30. The tube sheet is a plate-like member with a hole slightly larger than the outer diameter of the heat exchange tube drilled on a circular steel plate. The tube sheet is a round steel in the heat exchanger that serves to fix the heat exchange tube and seal the medium. The welding position between the heat exchange tube and the hole on the tube sheet is the weld. The heat exchange tube and the tube sheet in the shell and tube heat exchanger are the only barrier between the tube side and the shell side of the heat exchanger. The connection structure and connection quality between the heat exchange tube and the tube sheet determine the quality and service life of the heat exchanger, and are a crucial link in the heat exchanger manufacturing process. Most damage and failure of heat exchangers (such as refrigerant leakage) occur at the connection between the heat exchange tube and the tube sheet (i.e., the weld). The quality of the connection joint also directly affects the safety and reliability of the air-conditioning indoor unit.

[0052] Along the third direction, any mounting position 230 is arranged close to the weld 33. The weld 33 of the heat exchanger 30 is a leakage-prone point. The refrigerant sensor 50 is arranged at a position close to the leakage-prone point and above the weld 33 close to the first side panel. The position is slightly higher than the heat exchanger 30 component and is located between the fan 40 and the heat exchanger 30. When there is refrigerant leakage at the weld 33, the refrigerant accumulates or is acted upon by the wind wheel and moves upward to the refrigerant sensor 50, so that the refrigerant sensor 50 can effectively detect the refrigerant leakage. In this embodiment, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

[0053] In other embodiments, the direction of the air inlet 42 of the fan 40 is the same as the direction of the weld 33 of the heat exchanger 30, so that the air inlet 42 and the weld 33 are arranged close to the same side panel of the air conditioner indoor unit. At this time, the third direction is perpendicular to the first direction, and the third direction is parallel to the second direction.

[0054] It is understandable that in other embodiments, the direction of the air inlet 42 of the fan 40 and the direction of the weld 33 of the heat exchanger 30 can also be set to be at an angle less than 90°. In this case, the third direction is perpendicular to the first direction, and the third direction is set at an angle less than 90° to the second direction.

[0055] Furthermore, as shown in FIG3 , the plurality of mounting positions 230 include a first mounting position 231, and the refrigerant sensor 50 is arranged at a position close to the leakage point, that is, close to the first side plate and above the weld 33. Along the first direction, at least part of the first mounting position 231 overlaps with the weld 33, and the position of the first mounting position 231 is slightly higher than the heat exchanger 30 component and is located between the fan 40 and the heat exchanger 30. At this time, there is a refrigerant leak at the weld 33 and when the air conditioner indoor unit 100 is placed upright, under the action of the gravity accumulation of the refrigerant and the drive of the wind wheel, the refrigerant converges upward to the first mounting position 231, so that the refrigerant sensor 50 installed at the first mounting position 231 can effectively detect the refrigerant leakage.

[0056] Furthermore, referring to Figures 3 and 4 , the plurality of mounting positions 230 include a first mounting position 231 and a second mounting position 232 disposed opposite the first mounting position 231 and located on opposite inner walls of the chassis housing 20. In this embodiment, the first mounting position 231 is disposed on the inner wall of the second side panel, and the second mounting position 232 is disposed on the inner wall of the fourth side panel. When the air conditioner indoor unit 100 is configured for right-side airflow, i.e., when the air conditioner indoor unit 100 is positioned in a lying position, the refrigerant sensor 50 is mounted in the second mounting position 232, positioning the refrigerant sensor 50 near the bottom. When refrigerant leaks from below the heat exchanger 30, the refrigerant sensor 50 can quickly detect the leak. When refrigerant leaks from above the heat exchanger 30, the refrigerant will sink downward due to its higher density, allowing the refrigerant sensor 50 to promptly detect the leak.

[0057] In some embodiments of the present disclosure, as shown in FIG6 , when the air conditioner indoor unit is installed in the forward direction, the return air inlet 210 is located below the air conditioner indoor unit, and the air outlet 211 is located above the air conditioner indoor unit. A water receiving tray 204 is further provided at the bottom of the heat exchanger 30 for collecting and accommodating condensed water falling from the heat exchanger 30. The plurality of mounting positions 230 include a third mounting position 233, which is provided on the side plate of the heat exchanger 30. The third mounting position 233 is adjacent to the weld 33, and, along the first direction, the third mounting position 233 is located at the third mounting position of the heat exchanger 30. Between the first end 31 and the second end 32, when the air conditioner indoor unit is not in operation, if refrigerant leaks from the heat exchanger 30, the refrigerant will sink to the lower area within the chassis housing 20 due to the influence of gravity. Since the heat exchanger 30 is located below the air conditioner indoor unit, the leaked refrigerant will accumulate around the heat exchanger 30. Therefore, the third mounting position 233 is located on the heat exchanger 30 between the first end 31 and the second end 32. When the air conditioner indoor unit is not in operation, the refrigerant sensor installed on the third mounting position 233 has a high sensitivity and can promptly detect refrigerant leaks. In this embodiment, the third mounting position 233 is located above the water receiving pan 204, ensuring that the refrigerant sensor is positioned higher than the water receiving pan 204, thereby preventing the refrigerant sensor from being soaked in water and causing malfunction.

[0058] In some embodiments of the present disclosure, as shown in FIG7 , when the air conditioner indoor unit is installed upside down, the return air inlet 210 is located above the air conditioner indoor unit, and the air outlet 211 is located below the air conditioner indoor unit. A water receiving pan 204 is further provided at the bottom of the heat exchanger 30. The water receiving pan 204 is located between the heat exchanger 30 and the fan 40. The water receiving pan 204 is used to collect and accommodate condensed water falling from the heat exchanger 30. The plurality of mounting positions 230 include a fourth mounting position 234. Along the first direction, the fourth mounting position 234 is provided between the water receiving pan 204 and the fan 40. Between the machines 40, the air-conditioning indoor unit is in a non-working state. When the refrigerant in the heat exchanger 30 leaks, the refrigerant leaked from the heat exchanger 30 flows downward under the influence of gravity, and flows toward the lower area inside the chassis shell 20 through the gap between the water receiving pan 204 and the side panel. Therefore, the fourth mounting position 234 is set between the water receiving pan 204 and the fan 40, so that when the air-conditioning indoor unit is not turned on, the refrigerant sensor installed on the fourth mounting position 234 has higher sensitivity and can detect the leaked refrigerant in time. In this embodiment, the chassis shell 20 includes a support bar 205, which is used to support the water receiving tray 204. The fourth mounting position 234 is provided on the support bar 205 and is arranged close to the inner wall of the side panel 201, so that the refrigerant sensor is close to the gap between the water receiving tray 204 and the side panel, so that the leaked refrigerant above the water receiving tray 204 flows through the refrigerant sensor when flowing to the bottom of the water receiving tray 204, thereby improving the sensitivity of the refrigerant sensor and timely detecting refrigerant leakage.

[0059] The second aspect of the present application also proposes an air conditioner, which includes the air conditioner indoor unit 100 of any of the above-mentioned embodiments. Since the air conditioner has the same technical features as the air conditioner indoor unit 100 and can achieve the same technical effects, it will not be repeated here.

[0060] The air conditioner indoor unit proposed in this disclosure has the following advantages:

[0061] 1. A refrigerant sensor is added inside the air conditioner indoor unit to detect refrigerant leakage inside the machine;

[0062] 2. Limit the location of the refrigerant sensor to a location close to the leak point to facilitate rapid response to refrigerant leaks;

[0063] 3. Set up multiple refrigerant sensor installation positions, which change as the machine installation direction changes, to ensure that different installation directions can quickly respond to refrigerant leaks.

[0064] The above description is merely a preferred embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An air conditioner indoor unit, wherein: The air conditioner indoor unit comprises: A chassis shell, wherein a plurality of mounting positions are provided in the chassis shell; The refrigerant sensor is detachably mounted at any one of the plurality of mounting positions.

2. The air conditioning indoor unit according to claim 1, wherein: The chassis shell comprises a return air port and an air outlet arranged opposite to each other along a first direction, the plurality of mounting positions are arranged in a first area in the chassis shell, and the first area has a first boundary close to one side of the return air port along the first direction; The air conditioner indoor unit further comprises a heat exchanger, the heat exchanger is arranged in the chassis housing, and along the first direction, the heat exchanger has a first end close to the return air outlet and a second end away from the return air outlet; The first boundary is located between the first end and the second end.

3. The air conditioning indoor unit according to claim 2, wherein: Any one of the installation positions is located on a side of the heat exchanger away from the return air outlet.

4. The air conditioning indoor unit according to claim 2, wherein: The first area also has a second boundary close to one side of the air outlet; The air conditioner indoor unit further comprises a fan, which is arranged in the chassis housing and between the air outlet and the heat exchanger, and the fan wheel of the fan has a center point along the first direction; The second boundary is located between the center point and the heat exchanger.

5. The air conditioning indoor unit according to claim 4, wherein: The fan comprises a centrifugal fan, wherein at least one end of the centrifugal fan along the second direction is provided with an air inlet, and along the second direction, the mounting position is arranged close to the air inlet; The second direction is perpendicular to the first direction.

6. The air conditioning indoor unit according to any one of claims 2 to 5, wherein: A weld is provided between the heat exchange tube and the tube sheet of the heat exchanger, and along the third direction, any one of the mounting positions is arranged close to the weld; Wherein, the third direction is perpendicular to the first direction.

7. The air conditioning indoor unit according to claim 6, wherein: The plurality of mounting positions include a first mounting position, the first mounting position is located between the fan and the heat exchanger, and along the first direction, at least a portion of the first mounting position is overlapped with the weld.

8. The air conditioning indoor unit according to claim 7, wherein: The plurality of mounting positions include a second mounting position, and the second mounting position and the first mounting position are respectively located on inner walls on two opposite sides of the chassis shell.

9. The air conditioning indoor unit according to claim 2, wherein: The plurality of mounting positions include a third mounting position, the third mounting position is provided on the heat exchanger, and the third mounting position is located between the first end and the second end.

10. The air conditioning indoor unit according to claim 4, wherein: The air conditioner indoor unit further comprises a water receiving pan, which is arranged below the heat exchanger and between the heat exchanger and the fan; The plurality of installation positions include a fourth installation position, and along the first direction, the fourth installation position is arranged between the water receiving tray and the fan.

11. The air conditioning indoor unit according to any one of claims 2 to 5, wherein: Along the first direction, a dimension between the first end and the second end is L, and a distance between the first boundary and the first end is h, where L=3h.

12. An air conditioner, wherein: It comprises an air-conditioning indoor unit as claimed in any one of claims 1 to 11.

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