Panel assembly, air conditioner indoor unit and heating and ventilation system

Abstract

The utility model discloses a panel assembly, an air conditioner indoor unit and a heating and ventilation system.The panel assembly comprises a face frame, an air return grille, an air purification module and an air detection module, the face frame is connected to a machine body and provided with an air return opening, and the air return opening is used for communicating with an air channel of the machine body. The air return grille is connected to the face frame so as to cover the air return opening. The air purification module is connected to the face frame and located in the air return opening so as to be used for conducting purification treatment on air passing through the air return opening. The air detection module is connected to the face frame and located on the outer side of the air return opening so as to be used for detecting the quality of air outside the machine body. According to the technical scheme, the technical problem that an existing air purification module and an existing air detection module are inconvenient to mount and dismount can be solved, the complexity of the mounting structure of the air conditioner indoor unit is reduced, and the air purification module and the air detection module are more convenient to repair and maintain.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a panel assembly, an air conditioning indoor unit and a heating and ventilation system. Background Art

[0002] With the improvement of living standards, people's health awareness is increasing, and they have higher requirements for indoor air quality. Therefore, air conditioners with air detection and air purification functions are becoming more and more popular among consumers.

[0003] In the related art, the design of the existing air conditioner indoor unit needs to reserve different installation structures to connect the detection air module and the purification air module. Although this design meets the air conditioning's air processing needs, it brings a significant problem, that is, the subsequent maintenance and disassembly process of the detection air module and the purification air module is not convenient enough. Utility Model Content

[0004] The embodiments of the present application provide a panel assembly, an air-conditioning indoor unit, and a HVAC system, which can solve the technical problem of the inconvenient installation and disassembly of the existing air purification module and air detection module, reduce the complexity of the installation structure of the air-conditioning indoor unit, and make the repair and maintenance of the air purification module and the air detection module more convenient.

[0005] In a first aspect, an embodiment of the present application provides a panel assembly installed on a body of an indoor unit of an air conditioner, the panel assembly comprising:

[0006] A face frame, the face frame is connected to the machine body and has a return air port, the return air port is used to communicate with the air duct of the machine body;

[0007] A return air grille, the return air grille being connected to the face frame to cover the return air outlet;

[0008] an air purification module, the air purification module being connected to the face frame and being located in the return air port, so as to purify the air passing through the return air port; and

[0009] An air detection module is connected to the face frame and is located outside the return air outlet to detect the air quality outside the machine.

[0010] In some of the embodiments, the face frame further defines an inspection port for maintenance and repair of the machine body, the inspection port is spaced apart from the return air port, and the air detection module is accommodated in the inspection port.

[0011] In some embodiments, the front frame includes a mounting surface facing the return air grille, the return air grille is connected to the mounting surface, the mounting surface is provided with the return air outlet and the maintenance opening, and neither the air purification module nor the air detection module protrudes from the mounting surface.

[0012] In some embodiments, the return air grille covers the mounting surface, and the grille area of the return air grille is disposed opposite to the return air outlet, and the return air grille is provided with ventilation holes corresponding to the maintenance opening.

[0013] In some embodiments, the number of the ventilation holes is at least one, and when there are multiple ventilation holes, the multiple ventilation holes are arranged at intervals;

[0014] And / or, the air detection module is disposed opposite to the ventilation hole.

[0015] In some embodiments, the panel assembly includes two fixing members fixed in the maintenance opening, the two fixing members are symmetrically arranged, and opposite sides of the air detection module are respectively detachably connected to the two fixing members.

[0016] In some embodiments, the air conditioner indoor unit further includes an electric control module, the electric control module is connected to the panel and is located in the maintenance opening, and the electric control module is electrically connected to the air purification module.

[0017] In some embodiments, the air purification module includes an electrostatic dust removal unit and / or a deodorization unit, the electrostatic dust removal unit is used to remove fine particles from the air passing through the return air outlet, and the deodorization unit is used to purify the air passing through the return air outlet.

[0018] In some embodiments, a wire groove is recessed on the surface of the front frame facing the return air grille, and the wire groove is used to fix the electrical connection wire between the machine body and the air detection module.

[0019] In some embodiments, one side of the return air grille is rotatably connected to the front frame, and the other side is snap-connected to the front frame.

[0020] In some embodiments, one of a rotating buckle and a rotating slot is provided on one side of the return air grille, and the other of the rotating buckle and the rotating slot is provided on the front frame;

[0021] Wherein, the rotating buckle and the rotating slot are rotationally matched so that the return air grille can rotate relative to the front frame.

[0022] In some of these embodiments, one of a fixed buckle and a fixed clamping groove is provided on the other side of the return air grille, and the other of the fixed buckle and the fixed clamping groove is provided on the front frame. The fixed buckle and the fixed clamping groove are in snap-fit connection;

[0023] Wherein, a plurality of the fixed buckles are provided, and the plurality of fixed buckles are arranged at intervals along the circumferential direction of the return air grille. A plurality of the fixed clamping grooves are provided, and the plurality of fixed buckles correspond to the plurality of fixed clamping grooves one by one.

[0024] In a second aspect, an embodiment of the present application provides an indoor air conditioner, which includes a machine body and the panel assembly as described above. The front frame of the panel assembly is connected to the bottom of the machine body.

[0025] In a third aspect, an embodiment of the present application provides a heating and ventilation system, which includes an outdoor air conditioner and the indoor air conditioner as described above. The indoor air conditioner and the outdoor air conditioner form a circulation flow path.

[0026] Based on the panel assembly, the indoor air conditioner, and the heating and ventilation system of the embodiments of the present application, by connecting both the air purification module and the air detection module to the front frame, and the air purification module is located inside the return air opening of the front frame, while the air detection module is located outside the return air opening of the front frame. In this way, when the panel assembly is installed on the machine body of the indoor air conditioner, the front frame not only plays a role in protecting the machine body, but also plays a role in integrally fixing the air purification module and the air detection module. Thus, it is possible to fix both the air purification module and the air detection module through one installation structure, reducing the complexity of the installation structure of the indoor air conditioner. Furthermore, on the basis of enabling the indoor air conditioner to have the functions of air detection and air purification, when it is necessary to perform maintenance and repair on the air purification module and the air detection module in the later stage, only by removing the front frame, the air purification module and the air detection module can be synchronously removed, making the repair and maintenance of the air purification module and the air detection module more convenient, reducing the steps and complexity in the maintenance process, and lowering the maintenance cost. In addition, the panel assembly is also provided with a return air grille connected to the front frame to cover the return air opening. In this way, external air can enter the air purification module after passing through the return air grille, while external sundries will be blocked by the return air grille, thereby protecting the air purification module and effectively extending the overall service life of the air purification module while being able to purify the air. Description of the Drawings

[0027] 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 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, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0028] Figure 1 It is a schematic structural diagram after the return air grille of the panel assembly of the present application is opened;

[0029] Figure 2 It is a schematic structural diagram of the panel assembly of the present application.

[0030] Explanation of the reference numerals in the drawings:

[0031] 100, panel assembly; 10, face frame; 11, return air opening; 12, inspection opening; 13, installation surface; 14, cable groove; 15, rotating slot; 16, fixed slot; 17, air supply opening; 20, return air grille; 21, ventilation holes; 22, rotating buckle; 23, fixed buckle; 24, grille area; 30, air purification module; 31, electrostatic dust removal unit; 32, deodorization unit; 40, air detection module; 50, fixing member; 60, electronic control module.

[0032] The realization of the purpose of the present application, functional features and advantages will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0033] To make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail in conjunction with the drawings.

[0034] When the following description involves the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples of devices and methods that are consistent with some aspects of the present application as detailed in the appended claims.

[0035] In the description of the present application, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] With the improvement of living standards, people's awareness of health has been increasingly enhanced, and higher requirements have been put forward for indoor air quality. Therefore, air conditioners with air detection functions and air purification functions are becoming more and more popular among consumers.

[0038] In the related art, the current design of existing air conditioner indoor units needs to reserve different installation structures to connect the air detection module and the air purification module. Although this design meets the requirement that the air conditioner can process air, it brings a significant problem, that is, the subsequent maintenance, disassembly and assembly processes of the air detection module and the air purification module are not convenient enough.

[0039] To solve the above problems, a first aspect of the present application proposes a heating, ventilation and air conditioning (HVAC) device. In the embodiments of the present application, the HVAC device includes, but is not limited to, devices such as air conditioners, multi-connected units, and heat pumps, and can be applied to large-scale places such as shopping malls and office buildings. Among them, the HVAC system can include an air conditioner indoor unit (not shown in the figure), an outdoor unit (not shown in the figure), and a connecting pipe (not shown in the figure). The air conditioner indoor unit is connected to the air conditioner outdoor unit through the connecting pipe so that the air conditioner indoor unit and the air conditioner outdoor unit form a circulation flow path. In some actual usage scenarios, the indoor unit of the present application can be installed indoors. The outdoor unit is responsible for refrigeration or heating and transports the refrigerant through the connecting pipe. The refrigerant exchanges heat with the indoor air and the outdoor air respectively. The indoor unit is responsible for delivering cold air or hot air into the room to achieve the effect of cooling or heating.

[0040] The indoor unit of an air conditioner can include forms such as a ceiling-mounted unit, a ducted unit, or a wall-mounted indoor unit, etc. Among them, the ceiling-mounted unit is usually installed in the ceiling by means of ceiling suspension to achieve a hidden effect on the ceiling-mounted unit through the ceiling. In this way, the ceiling-mounted unit has a better hidden effect and is more beautiful compared to other forms of indoor units. The following content still takes the indoor unit of the air conditioner in the form of a ceiling-mounted unit to introduce the advantages of the indoor unit of the air conditioner of the present application in terms of convenient maintenance and adjustment.

[0041] The indoor unit of an air conditioner includes a body (not shown in the figure) and a panel assembly. The body is installed in the ceiling, and the panel assembly is connected to the lower part of the body. The ceiling is provided with an installation opening, and the panel assembly is arranged in the installation opening and fixedly connected to the ceiling.

[0042] Referring to Figure 1 and Figure 2 , the panel assembly 100 includes a face frame 10, a return air grille 20, an air purification module 30, and an air detection module 40.

[0043] Among them, the face frame 10 serves as the main frame of the panel assembly 100 and defines the outline of the entire panel assembly 100. The face frame 10 can be rectangular or square, etc. The shape and size of the face frame 10 need to be adapted to the installation opening of the ceiling. Among them, the face frame 10 can be made of plastic material so that the face frame 10 has advantages such as light weight and beautiful appearance. Of course, the face frame 10 can also be made of metal material to have advantages such as high strength and excellent corrosion resistance. The present application does not limit this. The face frame 10 is connected to the lower part of the body and has a return air opening 11, and the return air opening 11 can be in a long strip shape.

[0044] The face frame 10 is also provided with an air supply opening 17. The return air opening 11 and the air supply opening 17 are arranged at intervals, and the face frame 10 is connected to the lower part of the body so that both the return air opening 11 and the air supply opening are communicated with the air duct. In this way, return air and air supply can be realized below the body. The air duct can include a receiving cavity, a heat exchange cavity, and a fan cavity that are connected in sequence. The heat exchange cavity is configured to receive the heat exchanger of the body, and the fan cavity is configured to receive the fan of the body and is communicated with the air supply opening. And the body is also provided with a control module, and the control module is electrically connected to the fan and the heat exchanger respectively to control or adjust the fan and the heat exchanger. In this way, the air flow flowing in from the return air opening 11 will first flow through the receiving cavity, then pass through the heat exchanger located in the heat exchange cavity for heat exchange, and then flow to the fan in the fan cavity. Then, under the drive of the fan, the air flow is thrown towards the air supply opening, and finally the air flow flows out through the panel, thereby realizing the air supply function of the ceiling-mounted unit.

[0045] The return air grille 20 can be movably connected to the front frame 10 so as to open or cover the return air outlet 11. Among them, the form of the movable connection can be a rotational connection, a sliding connection, a magnetic attraction connection or the like, so as to facilitate the subsequent opening of the return air outlet for maintenance. The present application does not limit this. Of course, the return air grille 20 can also be fixedly connected to the body by means of screw connection or snap connection, etc., so as to ensure the stability of the connection between the return air grille 20 and the front frame 10.

[0046] The air purification module 30 is connected to the front frame 10 and is located inside the return air outlet 11, so that the air passing through the return air outlet 11 can be purified and disinfected by the air purification module 30, and thus the air purification and disinfection treatment of the entire indoor space can be achieved after a certain circulation flow treatment. And the air purification module 30 can completely cover the return air outlet 11, so that all the air passing through the return air outlet 11 can be purified by the air purification module 30. Among them, the air purification module 30 can be a multi-functional purification device integrating a variety of air purification technologies, and can include but not limited to effective air purification and disinfection mechanisms such as electrostatic precipitation, ion net, photocatalysis, etc. It not only has a small ventilation resistance and little influence on the ventilation volume and air supply distance of the air conditioner indoor unit itself, but also can effectively eliminate PM2.5, sterilize, remove harmful gases, comprehensively eliminate various air pollutants in the room, and meet the healthy air quality standard.

[0047] Refer to Figure 1 and Figure 2, in some structural forms, the air purification module 30 includes an electrostatic dust removal unit 31. Among them, the electrostatic dust removal unit 31 is a device or module that uses the principle of static electricity to remove dust from the air. The principle of electrostatic dust removal is used to remove tiny particulate matters in the air, such as dust, smoke, pollen, etc., from the air entering the return air inlet 11 to improve the air quality. The electrostatic dust removal module usually includes a series of electrodes and dust collection plates. Through the action of static electricity, the particulate matters suspended in the air are adsorbed onto the dust collection plates, thereby achieving the effect of dust removal and ensuring the cleanliness of the air passing through the return air inlet 11. In another embodiment, the air purification module 30 includes a deodorization unit 32. The deodorization unit 32 is a structure that uses photocatalyst materials for air purification. That is, based on the chemical reaction of the photocatalyst, where light energy activates the surface of the catalyst, triggering the oxidation and decomposition of gaseous pollutants, thereby converting them into harmless substances. In other embodiments, the air purification module 30 can also include an electrostatic dust removal unit 31 and a deodorization unit 32 at the same time, and the electrostatic dust removal unit 31 and the deodorization unit 32 are stacked. By stacking the electrostatic dust removal unit 31 and the deodorization unit 32, the purification treatment of the air can be further improved. In addition, during installation, after the electrostatic dust removal unit 31 and the deodorization unit 32 are stacked, at least one of the electrostatic dust removal unit 31 and the deodorization unit 32 can be connected to the front frame 10 by means of screws or buckles, etc. so that when disassembling later, the electrostatic dust removal unit 31 and the deodorization unit 32 can also be disassembled at the same time, so as to facilitate the subsequent maintenance and cleaning of the air purification module 30, and further, after long-term use, the electrostatic dust removal unit 31 and the deodorization unit 32 can be cleaned to ensure the purification degree of the air by the air purification module 30.

[0048] The air detection module 40 is connected to the front frame 10 and is located outside the return air inlet 11, so as to detect the air quality outside the body. Among them, the air detection module 40 can be at least one of a PM2.5 sensor, a smoke sensor, a dust sensor, a volatile gas sensor, a CO gas sensor, a CO2 gas sensor, etc. And the air detection module 40 is located outside the return air inlet 11, so that the air quality outside the body can be accurately detected, and the situation of detecting the air that has been processed by the air purification module 30 can be reduced, so as to ensure the accuracy of the detection by the air detection module 40. It should be noted that the air purification module 30 and the air detection module 40 can be electrically connected to the control module of the body of the air conditioner indoor unit. Thus, when the air detection module 40 detects the air quality and feeds it back to the control module, the control module controls the air purification module 30 to purify the air passing through the return air inlet 11.

[0049] Based on the panel assembly 100, air conditioner indoor unit, and HVAC system according to the embodiments of the present application, by connecting both the air purification module 30 and the air detection module 40 to the face frame 10, and the air purification module 30 is located within the air return opening 11 of the face frame 10, while the air detection module 40 is located outside the air return opening 11 of the face frame 10. In this way, when the panel assembly 100 is installed on the body of the air conditioner indoor unit, the face frame 10 not only plays a role in protecting the body, but also plays a role in integrating and fixing the air purification module 30 and the air detection module 40, so as to realize fixing the air purification module 30 and the air detection module 40 through one installation structure, reducing the complexity of the installation structure. Furthermore, on the basis of enabling the air conditioner indoor unit to have the functions of air detection and air purification, when it is necessary to maintain and repair the air purification module 30 and the air detection module 40 in the later stage, only the face frame 10 needs to be disassembled, and then the air purification module 30 and the air detection module 40 can be disassembled synchronously, making the maintenance and repair of the air purification module 30 and the air detection module 40 more convenient, reducing the steps and complexity in the maintenance process, and lowering the maintenance cost. In addition, the panel assembly 100 is further provided with a return air grille 20 connected to the face frame 10 to cover the air return opening 11. In this way, external air can enter the air purification module 30 after passing through the return air grille 20, while external sundries will be blocked by the return air grille 20, thereby protecting the air purification module 30 and effectively extending the overall service life of the air purification module 30 while being able to purify the air.

[0050] In some structural forms, the face frame 10 is further provided with a maintenance opening 12 for maintaining and repairing the body. The maintenance opening 12 is spaced from the air return opening 11. In this way, when the face frame 10 is fixed to the body, subsequent maintenance personnel can directly perform maintenance and repair on the wiring ports or control modules inside the body through this maintenance opening 12. And the air detection module 40 is accommodated within the maintenance opening 12. In this way, the internal space of the maintenance opening 12 of the face frame 10 can be effectively utilized to accommodate the air detection module 40, improving the structural utilization rate of the face frame 10 and reducing the space occupied by the air detection module 40 outside the face frame 10.

[0051] Furthermore, the face frame 10 includes an installation surface 13 facing the return air grille 20. The return air grille 20 is connected to the installation surface 13. The installation surface 13 is provided with an air return opening 11 and a maintenance opening 12, and neither the air purification module 30 nor the air detection module 40 protrudes from the installation surface 13. In this way, the risk of accidental damage to the air purification module 30 and the air detection module 40 caused by collision during the installation of the return air grille 20 is reduced, thereby improving the safety of the air purification module 30 and the air detection module 40. At the same time, it also enables the return air grille 20 to be arranged closer to the air return opening 11, making the overall structure of the face frame 10 assembly more compact, not occupying too much space, and having a more beautiful overall appearance.

[0052] Furthermore, the return air grille 20 covers the installation surface 13, and the grille area 24 of the return air grille 20 is disposed opposite to the return air outlet 11. Such above-mentioned covering installation enables the return air grille 20 to cover both the return air outlet 11 and the inspection opening 12, so as to protect the air detection module 40 located in the inspection opening 12, thereby improving the protection effect of the return air grille 20, and at the same time helping to prevent the air that does not pass through the grille area 24 from directly flowing into the return air outlet 11. The return air grille 20 is provided with ventilation holes 21 corresponding to the inspection opening 12, so that the air outside the machine body can enter the inspection opening 12 through the ventilation holes 21. In this way, the protection of the air detection module 40 is achieved, and at the same time, it is ensured that the air detection module 40 located in the inspection opening 12 can detect the air quality outside the machine body.

[0053] Even further, a plurality of ventilation holes 21 are provided, and the plurality of ventilation holes 21 are arranged at intervals. Such a setting of the plurality of ventilation holes 21 can increase the intake air volume of the air entering the inspection opening 12, so as to improve the efficiency of the air detection module 40 located in the inspection opening 12 for detecting air. And the way that the plurality of ventilation holes 21 are arranged at intervals further improves the fluidity of the air entering the inspection opening 12 compared with the centralized arrangement method, preventing the detection efficiency of the air detection module 40 from being reduced due to poor local air flow.

[0054] Optionally, the air detection module 40 is disposed directly opposite to the ventilation holes 21. In this way, the air flow outside the machine body can be detected by the air detection module 40 more quickly after passing through the ventilation holes 21, so as to improve the detection efficiency.

[0055] Referring to Figure 1 and Figure 2 , optionally, the panel assembly 100 includes two fixing members 50 fixed in the inspection opening 12. The two fixing members 50 are symmetrically arranged, and the opposite sides of the air detection module 40 are respectively detachably connected to the two fixing members 50. Such a connection design of the air detection module 40 above takes into account symmetry and module detachability, so that the air detection module 40 is easier to install and maintain, improving the stability and balance of the air detection module 40 after installation. At the same time, it enables the user to replace or upgrade the air detection module 40 according to needs without changing the entire panel assembly 100, so as to be applicable to scenarios where the air detection module 40 needs to be frequently replaced or upgraded. Specifically, the two fixing members 50 can be arranged in a plate-like structure to increase the contact area with the air detection module 40. And the two fixing members 50 can be an integral structure with the face frame 10 and located in the inspection opening 12, so as to improve the structural strength of the fixing members 50, thereby improving the stability of the installation of the air detection module 40. Or the two fixing members 50 can also be fixed to the face frame 10 by means of screws or snap connections, etc., for easy repair and disassembly of the fixing members 50 in the later stage.

[0056] Reference Figure 1 and Figure 2 In some structural forms, the air conditioner indoor unit further includes an electronic control module 60. The electronic control module 60 is connected to the panel and is located inside the maintenance opening 12. The electronic control module 60 is electrically connected to the air purification module 30. In this way, by arranging the electronic control module 60 for controlling the air purification module 30 in the maintenance opening 12, compared with arranging the electronic control module 60 in the return air outlet 11, arranging it in the maintenance opening 12 can avoid increasing the return air resistance of the return air outlet 11 due to the electronic control module 60, thereby avoiding affecting the air supply volume of the return air outlet 11 and ensuring the return air efficiency. And the electronic control module 60 can be used to control the opening and closing of the air purification module 30. At the same time, when the air purification module 30 includes an electrostatic dust removal unit 31, since a strong electric field needs to be introduced during the working process of the electrostatic dust removal unit 31, when the external electric field of the air purification module 30 is a weak electric field, the electronic control module 60 can also be used to control the conversion of the external weak electric field into a strong electric field.

[0057] Reference Figure 1 In some structural forms, a wire groove 14 is recessed on the surface of the front frame 10 facing the return air grille 20. The wire groove 14 is used to fix the electrical connection line between the machine body and the air detection module 40. In this way, by forming the wire groove 14, an orderly and stable installation position is provided for the electrical connection line, thereby ensuring the transmission quality and reliability of the electrical signal to ensure the normal operation of the subsequent air detection module 40. At the same time, after being fixed, the electrical connection line also avoids interfering with the maintenance during later maintenance, improving the convenience of later maintenance. It can be understood that the wire groove 14 is recessed from the surface of the front frame 10 facing the return air grille 20, and the wire groove 14 can be arranged as a long strip-shaped groove, so as to better fix and place the electrical connection line. And the electrical connection line can specifically be electrically connected to the control module of the machine body and the air detection module 40.

[0058] Reference Figure 1 and Figure 2 In some structural forms, one side of the return air grille 20 is rotatably connected to the front frame 10, and the other side is snap-connected to the front frame 10. In this way, the staff only needs to flip the return air grille 20 to open or cover the return air outlet 11. Moreover, when the return air grille 20 is fixed to or detached from the front frame 10, the snap-fit fixing form, compared with other fixing forms such as screw connection, does not require additional fixing connectors and is convenient for the staff to operate. Based on the above content, the form of the embodiment of the present application can not only ensure the stability of the return air grille 20 when covering the return air outlet 11, but also ensure the operation convenience of the return air grille 20 when it is movably arranged.

[0059] Further, a rotary buckle 22 is provided on one side of the return air grille 20, and the return air grille 20 is provided on the front frame 10; or a return air grille 20 is provided on one side of the return air grille 20, and a rotary buckle 22 is provided on the front frame 10. Wherein, the rotary buckle 22 is rotationally engaged with the return air grille 20 so that the return air grille 20 can rotate relative to the front frame 10. In this way, the return air grille 20 can rotate relative to the front frame 10 to open or cover the return air opening 11, and the connection between the rotary buckles 22 can be disengaged. On this basis, when the return air grille 20 is disengaged from the front frame 10, the return air grille 20 can be disassembled from the front frame 10 for maintenance or replacement. For example, when too much dust accumulates on the return air grille 20, the return air grille 20 can be disassembled for timely cleaning. In other embodiments, one side of the return air grille 20 can also be rotatably connected to the front frame 10 through a rotating shaft, and the present application does not limit this.

[0060] In order to improve the stability of the return air grille 20 and the front frame 10 during rotation, in some structural forms, multiple rotary buckles 22 are provided, and the multiple rotary buckles 22 are arranged at intervals along the length direction of the return air grille 20. Multiple return air grilles 20 are provided, wherein the multiple rotary buckles 22 correspond to the multiple return air grilles 20 one by one. In this way, the stability of the rotation between the return air grille 20 and the front frame 10 can be improved by arranging multiple rotary buckles 22 and multiple return air grilles 20 in the length direction of the return air grille 20. Of course, in other structural forms, the number of the rotary buckles 22 and the return air grilles 20 are both set to be single. The rotary buckle 22 can be arranged in the middle of the return air grille 20 along its length direction and cooperate with the return air grille 20. The embodiments of the present application do not limit this.

[0061] In order to improve the relative fixing stability between the return air grille 20 and the front frame 10 when the return air grille 20 covers the return air opening 11, in some structural forms, fixing buckles 23 are provided on the other side of the return air grille 20, and fixing slots 16 are provided on the front frame 10; or fixing slots 16 are provided on the other side of the return air grille 20, and fixing buckles 23 are provided on the front frame 10. The fixing buckles 23 and the fixing slots 16 are in snap-fit cooperation. Among them, a plurality of fixing buckles 23 are provided, and the plurality of fixing buckles 23 are arranged at intervals along the circumference of the return air grille 20. A plurality of fixing slots 16 are provided, and the plurality of fixing buckles 23 and the plurality of fixing slots 16 correspond to each other one by one. In this way, in the circumferential direction of the return air grille 20, by providing a plurality of fixing buckles 23 and a plurality of fixing slots 16, the relative fixing stability between the return air grille 20 and the front frame 10 can be improved. Of course, in other structural forms, the number of both the fixing buckles 23 and the fixing slots 16 is set to be single. The fixing buckle 23 can be provided in the middle of the return air grille 20 along its length direction and cooperate with the fixing slot 16. The embodiments of the present application do not limit this.

[0062] 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 positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0063] 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 principle of the present application shall be included in the protection scope of the present application.

Claims

1. A panel assembly installed on the body of an air conditioner indoor unit, characterized in that: The panel assembly comprises: A face frame, the face frame is connected to the machine body and has a return air port, the return air port is used to communicate with the air duct of the machine body; A return air grille, the return air grille being connected to the face frame to cover the return air outlet; an air purification module, the air purification module being connected to the face frame and being located in the return air port, so as to purify the air passing through the return air port; and An air detection module is connected to the face frame and is located outside the return air outlet to detect the air quality outside the machine.

2. The panel assembly according to claim 1, wherein: The face frame is also provided with an inspection port for maintenance and repair of the machine body. The inspection port is spaced apart from the return air port, and the air detection module is accommodated in the inspection port.

3. The panel assembly according to claim 2, characterized in that The surface frame includes a mounting surface arranged toward the return air grille, the return air grille is connected to the mounting surface, the return air port and the inspection port are provided on the mounting surface, and the air purification module and the air detection module are not arranged protruding from the mounting surface.

4. The panel assembly according to claim 3, characterized in that: The return air grille covers the installation surface, and a grille area of ​​the return air grille is arranged opposite to the return air port, and an air vent is opened in the return air grille corresponding to the inspection port.

5. The panel assembly according to claim 4, characterized in that The number of the ventilation holes is at least one, and when there are multiple ventilation holes, the multiple ventilation holes are arranged at intervals; And / or, the air detection module is arranged directly opposite to the air vent.

6. The panel assembly according to claim 2, wherein: The panel assembly includes two fixing components fixed in the inspection port, the two fixing components are symmetrically arranged, and the opposite sides of the air detection module are detachably connected to the two fixing components.

7. The panel assembly according to claim 2, characterized in that: The panel assembly also includes an electric control module, which is connected to the panel and located in the inspection port, and is electrically connected to the air purification module.

8. The panel assembly according to any one of claims 1 to 7, characterized in that: The air purification module includes an electrostatic dust removal unit and / or a deodorization unit. The electrostatic dust removal unit is used to remove tiny particles from the air passing through the return air port, and the deodorization unit is used to purify the air passing through the return air port.

9. The panel assembly according to any one of claims 1 to 7, characterized in that: The surface of the face frame facing the return air grille is concavely provided with a wire fixing groove, and the wire fixing groove is used to fix the electrical connection line between the machine body and the air detection module.

10. The panel assembly according to any one of claims 1 to 7, characterized in that: One side of the return air grille is rotatably connected to the surface frame, and the other side is clamped to the surface frame.

11. The panel assembly according to claim 10, wherein: One side of the return air grille is provided with one of a rotating buckle and a rotating slot, and the face frame is provided with the other of the rotating buckle and the rotating slot; Wherein, the rotating buckle and the rotating slot are rotationally matched to enable the return air grille to rotate relative to the face frame.

12. The panel assembly according to claim 10, wherein: One of a fixing buckle and a fixing slot is provided on the other side of the return air grille, and the other of the fixing buckle and the fixing slot is provided on the face frame, and the fixing buckle is engaged with the fixing slot; There are a plurality of fixing buckles, which are arranged at intervals along the circumference of the return air grille, and there are a plurality of fixing slots, which correspond one-to-one to each other.

13. An air conditioner indoor unit, characterized in that: The invention comprises a machine body and a panel assembly as claimed in any one of claims 1 to 12, wherein a face frame of the panel assembly is connected to the bottom of the machine body.

14. A HVAC system, characterized in that: It comprises an air-conditioning outdoor unit and the air-conditioning indoor unit as claimed in claim 13, wherein the air-conditioning indoor unit and the air-conditioning outdoor unit form a circulation flow path.

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