Air conditioner indoor unit and heating and ventilation system

Abstract

The utility model discloses an air conditioner indoor unit and a heating and ventilation system. The air conditioner indoor unit comprises a shell, a heat exchanger and a main water pan. An air duct is formed in the shell; the heat exchanger is located in the air duct; the main water pan is located in the air channel and located below the heat exchanger. Wherein a first limiting structure is arranged on the shell, a second limiting structure is arranged on the main water pan, the first limiting structure is matched with the upper end of the heat exchanger in a clamping mode, the second limiting structure is matched with the bottom end of the heat exchanger in an abutting mode, and the first limiting structure is matched with the second limiting structure so that the heat exchanger can be fixed in the air channel. According to the embodiment of the invention, the first limiting structure is arranged on the shell, and the second limiting structure is arranged on the main water pan, so that the heat exchanger can be fixed in the air duct of the shell under the limiting action of the first limiting structure and the second limiting structure, and the mounting mode of the heat exchanger in the indoor unit of the air conditioner is simplified.

Description

Technical Field

[0001] This application relates to the technical field of HVAC systems, and particularly to an air conditioner indoor unit and an HVAC system. Background Art

[0002] The heat exchanger is the core component of the entire air conditioner indoor unit. Generally, the heat exchanger is fixed on the chassis of the indoor unit. In the related art, the heat exchanger is assembled and fixed by multiple screws. The installation method is relatively cumbersome. Moreover, because the heat exchanger works in a humid and hot environment all year round, after a long time, the screws are prone to rust, making it difficult to disassemble and repair. Summary of the Utility Model

[0003] The embodiments of this application provide an air conditioner indoor unit and an HVAC system, which can simplify the installation method of the heat exchanger in the air conditioner indoor unit.

[0004] In a first aspect, the embodiments of this application provide an air conditioner indoor unit, including a housing, a heat exchanger, and a main water receiving tray; a wind channel is formed inside the housing; the heat exchanger is located inside the wind channel; the main water receiving tray is located inside the wind channel and below the heat exchanger; wherein, a first limiting structure is provided on the housing, a second limiting structure is provided on the main water receiving tray, the first limiting structure is in clamping cooperation with the upper end of the heat exchanger, the second limiting structure is in abutting cooperation with the bottom end of the heat exchanger, and the first limiting structure and the second limiting structure cooperate to fix the heat exchanger in the wind channel.

[0005] In some embodiments of this application, first limiting structures are provided on opposite sides of the heat exchanger along its length direction, which can not only reduce the production materials of the first limiting structure, but also reduce the blockage of the air flow in the wind channel by the first limiting structure.

[0006] In some embodiments of this application, the heat exchanger includes a heat exchange main body and a side plate structure connected to each other, the heat exchange main body and / or the side plate structure are in clamping cooperation with the first limiting structure, and the heat exchange main body and / or the side plate structure are in abutting cooperation with the second limiting structure.

[0007] In some embodiments of this application, the first limiting structure has a receiving groove, and the heat exchange main body and / or the side plate structure are clamped in the receiving groove to prevent the heat exchanger from displacing in the width direction of the heat exchange main body.

[0008] In some embodiments of this application, the first limiting structure has a limiting hole, a positioning member is provided on the side plate structure, the positioning member is inserted into the limiting hole, the first limiting structure can abut against the top end of the side plate structure in the width direction of the heat exchange main body, and when the positioning member is inserted into the limiting hole, it can also limit the movement of the heat exchanger in the length direction of the heat exchange main body, thereby further limiting the heat exchanger.

[0009] In some embodiments of the present application, the second limiting structure includes a first protruding portion. The first protruding portion extends along the length direction of the heat exchange main body, and the first protruding portion abuts against the bottom end of the heat exchange main body to provide support for the bottom of the heat exchanger and limit the sliding of the heat exchanger under the action of gravity.

[0010] In some embodiments of the present application, the distance from the first limiting structure to the first protruding portion is the same as the width of the heat exchanger, thereby improving the reliability of installing the heat exchanger between the first limiting structure and the first protruding portion.

[0011] In some embodiments of the present application, the heat exchanger is inclined above the main water receiving tray; the second limiting structure further includes a second protruding portion. The second protruding portion is arranged on opposite sides of the first protruding portion along the length direction of the heat exchanger, and the second protruding portion abuts against one side of the heat exchange main body and / or the side plate structure facing the main water receiving tray. The second protruding portion provides support for the heat exchanger, thereby making the arrangement of the heat exchanger more stable.

[0012] In some embodiments of the present application, the housing, the first limiting structure, the first protruding portion, and the second protruding portion together form an installation cavity. The heat exchanger is arranged in the installation cavity, and the peripheral side of the heat exchanger is in contact with the inner side wall of the installation cavity. Thus, the shape of the installation cavity is adapted to the shape of the heat exchanger, improving the installation reliability of the heat exchanger in the installation cavity.

[0013] In some embodiments of the present application, the air conditioner indoor unit further includes a secondary water receiving tray. The secondary water receiving tray is located between the main water receiving tray and the heat exchanger. A plug-in member is arranged on one of the secondary water receiving tray and the side plate structure, and a through hole is formed on the other of the secondary water receiving tray and the side plate structure. The plug-in member is inserted into the through hole to assist in fixing the heat exchanger.

[0014] In some embodiments of the present application, the housing includes side plates located on opposite sides of the heat exchanger along its length direction. The side plates cover the edge portion of the secondary water receiving tray to limit the secondary water receiving tray and reduce the possibility of the secondary water receiving tray becoming loose.

[0015] In some embodiments of the present application, a third limiting structure is further arranged on the housing. The third limiting structure is located on opposite sides of the heat exchanger along its length direction, and the third limiting structure is in contact with opposite sides of the heat exchanger along its length direction to provide a limiting effect on the heat exchanger in the length direction of the heat exchanger.

[0016] In a second aspect, an embodiment of the present application further provides a heating and ventilation system, including the air conditioner indoor unit according to any of the above embodiments.

[0017] The beneficial effects of the embodiments of the present application are as follows: By providing a first limiting structure on the housing and a second limiting structure on the main water receiving tray, the heat exchanger can be fixed in the air duct of the housing under the limiting action of the first limiting structure and the second limiting structure, thereby simplifying the installation method of the heat exchanger in the air conditioner indoor unit. At the same time, this embodiment can improve the stability of the heat exchanger and reduce the shaking of the heat exchanger under the negative pressure of the air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Structural schematic diagram of an air conditioner indoor unit in an embodiment of the present application;

[0020] Figure 2 Exploded structural schematic diagram of an air conditioner indoor unit in an embodiment of the present application;

[0021] Figure 3 Structural schematic diagram of a part of the housing and the heat exchanger in an embodiment of the present application;

[0022] Figure 4 Cross-sectional structural schematic diagram of an air conditioner indoor unit in an embodiment of the present application;

[0023] Figure 5 Structural schematic diagram of the main water receiving tray in an embodiment of the present application;

[0024] Figure 6 For Figure 5 Enlarged structural schematic diagram at position A in

[0025] Figure 7 First perspective structural schematic diagram of an air conditioner indoor unit in another embodiment of the present application;

[0026] Figure 8 For Figure 7 Enlarged structural schematic diagram at position B in

[0027] Figure 9 Second perspective structural schematic diagram of an air conditioner indoor unit in another embodiment of the present application;

[0028] Figure 10 Structural schematic diagram of the housing, heat exchanger and auxiliary water receiving tray in an embodiment of the present application;

[0029] Figure 11 For Figure 10Schematic diagram of the enlarged structure at position C

[0030] Reference numerals:

[0031] 1. Air conditioner indoor unit;

[0032] 10. Housing; 11. Air duct; 12. First limiting structure; 121. Receiving groove; 13. Side plate; 14. Third limiting structure; 15. Outer shell; 16. Chassis;

[0033] 20. Heat exchanger; 21. Heat exchange main body; 22. Side plate structure; 221. Through hole;

[0034] 30. Main water receiving tray; 31. Second limiting structure; 311. First convex part; 312. Second convex part; 313. First surface; 314. Second surface;

[0035] 40. Auxiliary water receiving tray; 41. Plug-in part;

[0036] 51. Stopping part; 52. Blower wheel;

[0037] L1. Length direction; L2. Width direction. Detailed implementation manners

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0039] The heat exchanger is the core component of the entire air conditioner indoor unit. The heat exchanger can cool or heat the inhaled air after heat exchange, and the air conditioner indoor unit blows the cooled or heated air into the room to change the indoor temperature. For example, when the air conditioner is cooling, the heat exchanger of the outdoor unit serves as a condenser to release heat; the heat exchanger of the indoor unit serves as an evaporator to absorb heat and cool the room; when the air conditioner is heating, the heat exchanger of the indoor unit serves as a condenser to release heat and heat the room; the heat exchanger of the outdoor unit serves as an evaporator to absorb heat.

[0040] Generally, the heat exchanger is fixed on the chassis of the indoor unit. In the related technology, the heat exchanger is assembled and fixed by multiple screws. The installation method is relatively cumbersome, the fixed assembly efficiency is low, and it is easy to accidentally damage the heat exchanger during the process of driving screws. At the same time, because the heat exchanger works in a humid and hot environment all year round, after a long time, the screws are prone to rust, making it difficult to disassemble and repair.

[0041] For the above situation, please refer to Figures 1 - 4 In one aspect of the present application, an indoor air conditioner 1 is provided. In an embodiment of the present application, the indoor air conditioner 1 includes a housing 10, a heat exchanger 20, and a main water receiving tray 30.

[0042] The housing 10 includes a mutually connected outer shell 15 and a chassis 16. The housing 10 can be made of materials with higher strength such as stainless steel and aluminum alloy to better protect the various functional components disposed inside the housing 10. The outer shell 15 and the chassis 16 can be detachably connected, such as by screwing or clamping, which is convenient for maintaining the internal components. Of course, the two can also be an integrally formed structure to improve the overall strength of the casing. The present application does not limit this. Further, the housing 10 of the present application may further include a panel. The panel is connected to the outer shell 15. There is a cavity inside the outer shell 15. The panel and the outer shell 15 cooperate to define an air duct 11 (as Figure 7 shown), that is, a part of the cavity also forms the air duct 11, and the panel is provided with an air return opening and an air supply opening communicating with the air duct 11.

[0043] Both the heat exchanger 20 and the main water receiving tray 30 are located in the air duct 11, and the main water receiving tray 30 is located below the heat exchanger 20. The panel is located below the main water receiving tray 30. The heat exchanger 20 includes, but is not limited to, a plate heat exchanger 20 in a single-fold form, a multi-fold plate heat exchanger 20, or an arc-shaped heat exchanger 20, etc.

[0044] Wherein, a first limiting structure 12 is provided on the housing 10, and a second limiting structure 31 is provided on the main water receiving tray 30. The first limiting structure 12 is in clamping cooperation with the upper end of the heat exchanger 20, and the second limiting structure 31 is in abutting cooperation with the bottom end of the heat exchanger 20. The first limiting structure 12 and the second limiting structure 31 cooperate to fix the heat exchanger 20 in the air duct 11, thereby reducing the movement of the heat exchanger 20 in the air duct 11.

[0045] It should be noted that when installing the heat exchanger 20, first snap or insert the upper end of the heat exchanger 20 into the first limiting structure 12 of the housing 10, and then install the main water receiving tray 30 and make the second limiting structure 31 on the main water receiving tray 30 abut against the bottom end of the heat exchanger 20, thereby completing the fixed installation of the heat exchanger 20. In the embodiment of the present application, by providing the first limiting structure 12 on the housing 10 and the second limiting structure 31 on the main water receiving tray 30, the heat exchanger 20 can be fixed in the air duct 11 of the housing 10 under the limiting action of the first limiting structure 12 and the second limiting structure 31, thus simplifying the installation method and installation steps of the heat exchanger 20 in the air conditioner indoor unit 1. At the same time, an air duct 11 is formed in the housing 10, and there is air flow in the air duct 11. The heat exchanger 20 will also be affected by the air flow in the air duct 11. This embodiment can improve the stability of the heat exchanger 20 and reduce the shaking of the heat exchanger 20 under the negative pressure action of the air flow.

[0046] In addition, in the related art, fixing ears extending out of the heat exchanger 20 body are usually provided on the side plates of the heat exchanger 20 to enable the heat exchanger 20 to be fixed with screws. However, due to the existence of the fixing ears, the heat exchanger 20 cannot be produced by the continuous cutting process, resulting in low production efficiency of the heat exchanger 20. In the embodiment of the present application, the heat exchanger 20 is installed and fixed by the limiting of the housing 10 and the main water receiving tray 30. By changing the installation method of the heat exchanger 20, the production materials and assembly operations of the heat exchanger 20 are reduced, thereby improving the manufacturability of the heat exchanger 20. At the same time, canceling the setting of the fixing ears on the heat exchanger 20 can also avoid the problem of the fixing ears being damaged and deformed during the turnover and transportation of the heat exchanger 20.

[0047] In some embodiments of the present application, first limiting structures 12 are provided on opposite sides of the heat exchanger 20 along its length direction L1.

[0048] Specifically, the first limiting structure 12 is in clamping cooperation with the upper end of the heat exchanger 20. The first limiting structure 12 can be arranged on opposite sides of the heat exchanger 20 along the length direction L1 of the heat exchanger 20. That is to say, the first limiting structure 12 can be in clamping cooperation with the opposite ends above the heat exchanger 20 to fix the upper end of the heat exchanger 20. Compared with the first limiting structure 12 extending along the length direction L1 of the heat exchanger 20, in this embodiment, the first limiting structure 12 is only arranged on opposite sides of the heat exchanger 20. On the one hand, it can reduce the production materials of the first limiting structure 12, and on the other hand, it can reduce the shielding of the air flow in the air duct 11 by the first limiting structure 12, so that the heat exchanger 20 can exchange more air flow in the air duct 11. Among them, as Figure 1As shown, the outer shape of the housing 10 is generally a cuboid, and the heat exchanger 20 is arranged in the housing 10 in a long strip shape, that is, the length direction L1 of the heat exchanger 20 is the same as the length direction L1 of the housing 10.

[0049] Please refer to Figure 3 , in some embodiments of the present application, the heat exchanger 20 includes a heat exchange main body 21 and a side plate structure 22 connected to each other. The heat exchange main body 21 and / or the side plate structure 22 are clamped and matched with the first limiting structure 12, and the heat exchange main body 21 and / or the side plate structure 22 are abutted and matched with the second limiting structure 31.

[0050] It can be understood that the first limiting structure 12 can clamp and fix the heat exchange main body 21 of the heat exchanger 20, or can clamp and fix the side plate structure 22 of the heat exchanger 20, or can clamp and fix the heat exchange main body 21 and the side plate structure 22 of the heat exchanger 20 at the same time; similarly, the second limiting structure 31 can be abutted and fixed with the heat exchange main body 21 of the heat exchanger 20, or can be abutted and fixed with the side plate structure 22 of the heat exchanger 20, or can be abutted and fixed with the heat exchange main body 21 and the side plate structure 22 of the heat exchanger 20 at the same time, and can be selected and set according to the actual situation.

[0051] Among them, the production material of the side plate structure 22 can be plastic or metal, etc., to ensure that the side plate structure 22 has a certain strength. Optionally, the side plate structure 22 is made by injection molding and die opening, or the side plate structure 22 is made by stretching and stamping a metal plate.

[0052] Furthermore, please refer to Figures 2 - 4 , in some embodiments of the present application, the first limiting structure 12 has a receiving groove 121, and the heat exchange main body 21 and / or the side plate structure 22 are clamped in the receiving groove 121.

[0053] Exemplarily, the upper end of the heat exchange main body 21 is clamped in the receiving groove 121, and each groove wall of the receiving groove 121 is in contact with the top wall and the side wall of the upper end of the heat exchange main body 21, and limits the heat exchange main body 21 along the width direction L2 of the heat exchange main body 21 to prevent the heat exchanger 20 from displacing in the width direction L2 of the heat exchange main body 21. Similarly, the upper end of the side plate structure 22 is clamped in the receiving groove 121, and each groove wall of the receiving groove 121 is in contact with the top wall and the side wall of the upper end of the side plate structure 22, and limits the side plate structure 22 along the width direction L2 of the heat exchange main body 21 to prevent the heat exchanger 20 from displacing in the width direction L2 of the heat exchange main body 21. Among them, if the heat exchanger 20 is arranged vertically, the width direction L2 of the heat exchange main body 21 refers to the height of the heat exchanger 20; if the heat exchanger 20 is arranged obliquely, the width direction L2 of the heat exchange main body 21 refers to the extending direction of the inclined connection line from the upper end to the lower end of the heat exchanger 20.

[0054] Alternatively, in some embodiments of the present application, the first limiting structure 12 has a limiting hole, and a positioning member is provided on the side plate structure 22. The positioning member is inserted into the limiting hole to limit the overall heat exchanger 20. The first limiting structure 12 can abut against the top end of the side plate structure 22 in the width direction L2 of the heat exchange main body 21. When the positioning member is inserted into the limiting hole, it can also limit the movement of the heat exchanger 20 in the length direction L1 of the heat exchange main body 21, thereby further limiting the heat exchanger 20. Herein, the preparation material and shape of the positioning column are not specifically limited in this embodiment. For example, the positioning column can be prepared from a metal or plastic material with relatively high strength, and the shape of the positioning column can be a square column or a cylindrical column, etc.

[0055] Please continue to refer to Figures 2 - 3 , in some embodiments of the present application, a third limiting structure 14 is further provided on the housing 10. In the length direction L1 of the heat exchanger 20, third limiting structures 14 are provided on both opposite sides of the heat exchanger 20. When the heat exchanger 20 is installed on the housing 10, the third limiting structure 14 is in contact with both opposite sides of the heat exchanger 20 along the length direction L1 of the heat exchanger 20, thereby providing a limiting effect on the heat exchanger 20 in the length direction L1 of the heat exchanger 20 and preventing the heat exchanger 20 from displacing in the length direction L1 of the heat exchanger 20.

[0056] Among them, the side plate structure 22 of the heat exchanger 20 can be located on the side of the heat exchange main body 21 close to the main water receiving tray 30. That is to say, the side of the heat exchange main body 21 close to the housing 10 can be in contact and limited with the third limiting structure 14; alternatively, the third limiting structure 14 can also be in contact and limited with the side plate structure 22, which is not specifically limited herein.

[0057] Please refer to Figures 4 - 6 , in some embodiments of the present application, the second limiting structure 31 includes a first protruding portion 311. The first protruding portion 311 extends along the length direction L1 of the heat exchange main body 21 (as Figure 2 shown), and the first protruding portion 311 abuts against the bottom end of the heat exchange main body 21 to provide support for the bottom of the heat exchanger 20 and limit the heat exchanger 20 from sliding under the action of gravity. It is easy to understand that the distance from the first limiting structure 12 to the first protruding portion 311 is the same as the width of the heat exchanger 20, thereby improving the reliability of installing the heat exchanger 20 between the first limiting structure 12 and the first protruding portion 20.

[0058] Please refer to Figure 4 、 Figures 7 - 8 , in some embodiments of the present application, the heat exchanger 20 is inclined above the main water receiving tray 30, that is, the connection line between the upper end and the lower end of the heat exchanger 20 forms an angle with the vertical direction.

[0059] Specifically, the heat exchanger 20 is disposed in the air duct 11 of the housing 10. The upper end of the heat exchanger 20 is limited by the first limiting structure 12 on the housing 10. The main water receiving tray 30 is located below the heat exchanger 20. The lower end of the heat exchanger 20 is limited by the second limiting structure 31 on the main water receiving tray 30. Since the heat exchanger 20 is inclined, the heat exchanger 20 has a tendency to move towards the main water receiving tray 30. In the embodiment of the present application, the second limiting structure 31 further includes a second protruding portion 312. The second protruding portion 312 abuts against the side of the heat exchange body 21 and / or the side plate structure 22 facing the main water receiving tray 30, that is, the second protruding portion 312 abuts against the inclined side surface of the heat exchanger 20, so that the second protruding portion 312 provides support for the heat exchanger 20, thereby making the setting of the heat exchanger 20 more stable. Moreover, the second protruding portion 312 is disposed on opposite sides of the first protruding portion 311 along the length direction L1 of the heat exchange body 21, so that both opposite sides of the heat exchanger 20 can be supported.

[0060] In some embodiments of the present application, the housing 10, the first limiting structure 12, the first protruding portion 311, and the second protruding portion 312 together form an installation cavity (not shown in the figure). The heat exchanger 20 is disposed in the installation cavity. Wherein, the inner side wall of the installation cavity is formed by the side walls of the housing 10, the first limiting structure 12, the first protruding portion 311, and the second protruding portion 312. The inner side wall of the installation cavity contacts the peripheral side of the heat exchanger 20. That is to say, the shape of the installation cavity is adapted to the shape of the heat exchanger, thereby improving the installation reliability of the heat exchanger 20 in the installation cavity.

[0061] Wherein, as Figure 6 and Figure 8 shown, the first protruding portion 311 has a first surface 313 for abutting against the bottom end of the heat exchange body 21, and the second protruding portion 312 has a second surface 314 for abutting against the side surface of the side plate structure 22 facing the main water receiving tray 30. The first surface 313 and the second surface 314 define a placement space to facilitate limiting the heat exchanger 20.

[0062] In order to further improve the stability of the heat exchanger 20, in some embodiments, as Figures 7 - 9As shown, a stop portion 51 is provided between the housing 10 and the heat exchanger 20, and the stop portion 51 abuts against the side of the heat exchanger 20 facing away from the main water receiving tray 30. It can be understood that the stop portion 51 is located on the side of the heat exchanger 20 facing away from the main water receiving tray 30, the second convex portion 312 is located on the side of the heat exchanger 20 close to the main water receiving tray 30, and both the stop portion 51 and the second convex portion 312 abut against the side surface of the heat exchanger 20. That is to say, the stop portion 51 and the second convex portion 312 are oppositely arranged on both sides of the heat exchanger 20. At the same time, the first convex portion 311 is provided at the bottom end of the heat exchanger 20. Thus, the stop portion 51, the first convex portion 311, and the second convex portion 312 jointly enclose a clamping space, and the bottom end of the heat exchanger 20 is located within this clamping space. Even if there is an air flow in the air duct 11 that generates a negative pressure on the heat exchanger 20, the position of the heat exchanger 20 can be more stable, reducing the shaking of the heat exchanger 20.

[0063] Among them, as Figure 9 shown, a wind wheel 52 is further provided in the housing 10. The wind wheel 52 is located on one side of the heat exchanger 20. When there is one wind wheel 52, a motor is provided on one side of the wind wheel 52, and the stop portion 51 is provided on the other side. When there are multiple wind wheels 52, adjacent wind wheels 52 are connected by a coupling, and the stop portion 51 is provided on the coupling.

[0064] Please refer to Figures 10 - 11 , in some embodiments of the present application, the air conditioner indoor unit 1 further includes a secondary water receiving tray 40. The secondary water receiving tray 40 is located between the main water receiving tray 30 and the heat exchanger 20. A plug-in member 41 is provided on one of the secondary water receiving tray 40 and the side plate structure 22, and a through hole 221 is provided on the other of the secondary water receiving tray 40 and the side plate structure 22. The plug-in member 41 is inserted into the through hole 221 to assist in fixing the heat exchanger 20.

[0065] Exemplarily, the plug-in member 41 is provided on the secondary water receiving tray 40, and the through hole 221 is provided on the side plate structure 22. The bottom end of the secondary water receiving tray 40 is connected to the housing 10. The plug-in member 41 is located on the side of the secondary water receiving tray 40 close to the heat exchanger 20. When the secondary water receiving tray 40 is installed on the housing 10, the plug-in member 41 will also be inserted into the through hole 221 to assist in fixing the heat exchanger 20, so that the position of the heat exchanger 20 is pre-fixed, which is beneficial to the subsequent installation of the main water receiving tray 30. Or, when the main water receiving tray 30 is disassembled, the secondary water receiving tray 40 can play an auxiliary role in fixing the heat exchanger 20, preventing the heat exchanger 20 from falling off the housing 10 after the main water receiving tray 30 is disassembled.

[0066] Further, in some embodiments of the present application, the housing 10 includes side plates 13 on opposite sides of the heat exchanger 20 along its length direction L1 (as Figure 1As shown, the side plate 13 covers the edge portion of the auxiliary water receiving tray 40. That is to say, a part of the side plate 13 can press against the edge portion of the auxiliary water receiving tray 40 close to the side plate 13 to limit the auxiliary water receiving tray 40 and reduce the possibility of the auxiliary water receiving tray 40 becoming loose.

[0067] Among them, when assembling the air conditioner indoor unit 1, the upper end of the heat exchanger 20 can be first clamped into the first limiting structure 12 of the housing 10, and then the bottom end of the auxiliary water receiving tray 40 is installed on the housing 10, and the plug-in member 41 on the auxiliary water receiving tray 40 is inserted into the through hole 221. At this time, the edge portion of the auxiliary water receiving tray 40 close to the side plate 13 is pressed by the side plate 13. Subsequently, the second limiting member on the main water receiving tray 30 is aligned with the bottom end of the heat exchanger 20, and the main water receiving tray 30 is connected and fixed to the side plate 13, thereby completing the assembly of the air conditioner indoor unit 1.

[0068] In a second aspect, the present application also proposes a heating and ventilation system. The heating and ventilation system includes the air conditioner indoor unit 1 as described above, and the specific structure of the heating and ventilation system refers to the above embodiments. Since the heating and ventilation system adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. Among them, the above heating and ventilation system includes but is not limited to devices such as air conditioners, multi-connected units, heat pumps, water heaters, etc.

[0069] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0070] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An air conditioner indoor unit, characterized in that: include: a housing, wherein an air duct is formed in the housing; a heat exchanger, located in the air duct; as well as A main water receiving tray, located in the air duct and below the heat exchanger; Among them, a first limiting structure is provided on the shell, and a second limiting structure is provided on the main water receiving tray. The first limiting structure is clamped and matched with the upper end of the heat exchanger, and the second limiting structure is abutted and matched with the bottom end of the heat exchanger, and the first limiting structure cooperates with the second limiting structure to fix the heat exchanger in the air duct.

2. The air conditioner indoor unit according to claim 1, characterized in that: The first limiting structures are arranged on opposite sides of the heat exchanger along the length direction thereof.

3. The air conditioner indoor unit according to claim 1, characterized in that: The heat exchanger comprises a heat exchange main body and a side plate structure connected to each other, the heat exchange main body and / or the side plate structure are engaged with the first limiting structure, and the heat exchange main body and / or the side plate structure are abutted with the second limiting structure.

4. The air conditioner indoor unit according to claim 3, characterized in that: The first limiting structure has a receiving groove, and the heat exchange body and / or the side plate structure are clamped in the receiving groove.

5. The air conditioner indoor unit according to claim 3, characterized in that: The first limiting structure has a limiting hole, and the side plate structure is provided with a positioning piece, and the positioning piece is inserted into the limiting hole.

6. The air conditioner indoor unit according to claim 3, characterized in that: The second limiting structure includes a first protrusion, which extends along the length direction of the heat exchange body and abuts against the bottom end of the heat exchange body.

7. The air conditioner indoor unit according to claim 6, characterized in that: The distance from the first limiting structure to the first protrusion is the same as the width of the heat exchanger.

8. The air conditioner indoor unit according to claim 6, characterized in that: The heat exchanger is arranged obliquely above the main water receiving pan; The second limiting structure also includes a second protrusion, which is arranged on opposite sides of the first protrusion along the length direction of the heat exchanger, and the second protrusion abuts against the side of the heat exchange body and / or the side plate structure facing the main water receiving tray.

9. The air conditioner indoor unit according to claim 8, characterized in that: The shell, the first limiting structure, the first protrusion, and the second protrusion together form a mounting cavity. The heat exchanger is disposed in the mounting cavity, and the peripheral sides of the heat exchanger are in contact with the inner wall of the mounting cavity.

10. The air conditioner indoor unit according to claim 3, characterized in that: The air conditioner indoor unit also includes an auxiliary water receiving pan, which is located between the main water receiving pan and the heat exchanger. A connector is provided on the auxiliary water receiving pan and one of the side plate structures. A through hole is opened on the auxiliary water receiving pan and the other of the side plate structures, and the connector is plugged into the through hole.

11. The air conditioner indoor unit according to claim 10, characterized in that: The shell includes side plates located at two opposite sides of the heat exchanger along the length direction thereof, and the side plates cover the edge portion of the auxiliary water receiving tray.

12. The air conditioner indoor unit according to any one of claims 1 to 11, characterized in that: The shell is also provided with a third limiting structure, which is located at two opposite sides of the heat exchanger along the length direction thereof, and the third limiting structure is in contact with two opposite sides of the heat exchanger along the length direction thereof.

13. A HVAC system, characterized in that: It comprises an air-conditioning indoor unit as described in any one of claims 1 to 12.

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