Ceiling unit and heating and ventilation system

Abstract

The ceiling machine comprises a machine body and a panel, the machine body comprises a machine shell and an electric control part, an air return opening is formed in the lower portion of the machine shell, the electric control part is contained in the machine shell and can be exposed through the air return opening, the panel comprises a face frame and an air return grille, the face frame is connected to the lower portion of the machine shell and provided with a window, and the air return grille is arranged in the window. The window is communicated with the air return port, the air return grille is movably connected to the face frame so as to open or cover the window, and the electric control component can be exposed through the window when the air return grille opens the window. According to the technical scheme, a worker can maintain or adjust the electric control component through the window in the state that the window of the air return grille is opened, and operation is more convenient.

Description

Technical Field

[0001] The present application relates to the field of HVAC technology, and in particular to a ceiling machine and a HVAC system using the ceiling machine. Background Art

[0002] In the related art, the ceiling unit of the HVAC system can be embedded in the indoor ceiling to achieve a better hiding effect through the cover of the ceiling. Most ceiling units include a body and a panel, wherein the body is embedded in the ceiling and hung on the top surface of the wall, and the panel is set at the opening of the ceiling to cover the body and play a role in protecting, decorating and beautifying the body.

[0003] However, when the staff needs to repair or adjust the parts of the ceiling machine, such as the electronic control parts of the ceiling machine, the entire panel needs to be removed from the ceiling before the subsequent repair or adjustment operation can be performed, which is inconvenient for the staff to operate. Utility Model Content

[0004] The embodiments of the present application provide a ceiling unit and a HVAC system, which enable a worker to repair or adjust an electric control component through a window when the window of the return air grille is open, making the operation more convenient.

[0005] In a first aspect, an embodiment of the present application provides a ceiling machine, which includes a body and a panel, wherein the body includes a casing and an electric control component, a return air port is formed below the casing, the electric control component is accommodated in the casing and can be exposed by the return air port, and the panel includes:

[0006] a face frame connected to the lower side of the housing and having a window, wherein the window is connected to the return air port; and

[0007] A return air grille, movably connected to the face frame to open or cover the window;

[0008] Wherein, when the return air grille opens the window, the electronic control component can be exposed through the window.

[0009] In some of the embodiments, one side of the return air grille is rotatably connected to the surface frame, and the other side is snap-connected to the surface frame.

[0010] 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 face frame;

[0011] Wherein, the rotating buckle and the rotating slot are rotationally matched to enable the return air grille to rotate relative to the face frame.

[0012] In some embodiments, the rotating buckles are provided in plurality, the rotating buckles are arranged at intervals along the length direction of the return air grille, and the rotating slots are provided in plurality;

[0013] Among them, the plurality of rotating buckles correspond one to one with the plurality of rotating slots.

[0014] In some embodiments, an air supply port is formed below the housing and is spaced apart from the air return port;

[0015] The face frame includes a frame body and a frame, wherein the frame is connected to the frame body and arranged in the middle of the frame body to separate the air outlet and the window inside the frame body, and the air outlet is connected to the air supply port;

[0016] Wherein, one side of the return air grille is rotatably connected to the frame.

[0017] In some embodiments, one of a fixing buckle and a fixing slot is provided on the other side of the return air grille, 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;

[0018] 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.

[0019] In some embodiments, the housing further comprises a hanging component, which is disposed outside the housing and connected to the housing;

[0020] The window comprises a main window and a sub-window, wherein the main window is arranged toward the return air outlet, and the sub-window is located at one side of the main window and is arranged corresponding to the hanging component.

[0021] In some embodiments, the hanging components include two and are respectively connected to opposite sides of the housing, the sub-windows include two, and the two sub-windows correspond to the two hanging components one by one;

[0022] Wherein, the return air grille comprises:

[0023] A first grille portion movably connected to the face frame; and

[0024] The second grille portion includes two parts connected to opposite sides of the first grille portion, and each of the second grille portions is an integral structure with the first grille portion;

[0025] The first grille portion is used to open or cover the main window, and the second grille portion is correspondingly used to open or cover a sub-window.

[0026] In some embodiments, the hanging components include two and are respectively connected to opposite sides of the housing, the sub-windows include two, and the two sub-windows correspond to the two hanging components one by one;

[0027] Wherein, the return air grille comprises:

[0028] A first grille portion movably connected to the face frame; and

[0029] The second grille parts include two parts which are respectively arranged on opposite sides of the first grille part, each of the second grille parts is a separate structure from the first grille part, and is detachably connected to the face frame;

[0030] The first grille portion is used to open or cover the main window, and the second grille portion is correspondingly used to open or cover a sub-window.

[0031] In some of the embodiments, in the width direction of the return air grille, the width of each of the sub-windows is greater than the width of the main window, and the width of the second grille portion is greater than the width of the first grille portion.

[0032] In some of the embodiments, each of the second grille parts is detachably connected to the face frame by at least one of a snap connection, a threaded connection, and a magnetic connection.

[0033] In some embodiments, the housing further comprises a connecting pipe component, and the connecting pipe component is disposed through the outer wall surface of the housing;

[0034] Wherein, when the return air grille opens the window, the portion of the connecting pipe component that passes through the outside of the casing can be exposed through the sub-window.

[0035] In some of the embodiments, the connection position between the housing and the hanging component is adjustable.

[0036] In some embodiments, the body is used to be embedded in a ceiling;

[0037] Wherein, the outer edge of the surface frame is provided with limiting ribs for limiting cooperation with the limiting grooves of the ceiling.

[0038] In a second aspect, an embodiment of the present application provides a HVAC system, which includes a ceiling unit and an outdoor unit as described above, and the ceiling unit and the outdoor unit form a refrigerant cycle.

[0039] Based on the ceiling unit and HVAC system of the embodiment of the present application, when the window of the return air grille is opened, the electric control component can be exposed through the window, so that the ceiling unit of the present application has at least the following technical effects:

[0040] By setting up a movable connection between the return air grille and the face frame, when the staff needs to operate or repair the electronically controlled components, they only need to operate the return air grille so that the return air grille can open the window. Compared with the related art that requires the entire panel to be removed from the ceiling, this embodiment does not need to remove the face frame of the panel while being able to operate the return air grille to open or cover the window. This arrangement facilitates operation by the staff and improves operating efficiency and maintenance efficiency.

[0041] Furthermore, based on the arrangement that the electric control components are accommodated in the casing and can be exposed from the return air vent, firstly, when the ceiling machine starts the air supply function, the heat generated by the electric control components during operation can be taken away by the airflow flowing in from the return air vent, thereby improving the heat dissipation effect of the electric control components; secondly, the wiring port of the electric control component can face the return air vent and the window, so that when the staff is wiring, they can face the wiring port through the window to perform a series of operations such as wiring, which is more convenient to operate than the arrangement that the electric control components are arranged outside the casing and the wiring port faces one side in the horizontal direction; finally, compared with the arrangement that the electric control components are arranged outside the casing and connected to the casing, the arrangement in which the electric control components are accommodated in the casing in the embodiment of the present application can reduce the overall volume of the ceiling machine, and the electric control components can be operated directly from the installation port of the ceiling, without the need to provide an additional maintenance port on the ceiling to repair the electric control components located outside the casing, thereby making the ceiling more beautiful and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 A schematic diagram of the connection between a ceiling and an embodiment of a ceiling machine of the present application;

[0044] Figure 2 It is a cross-sectional connection diagram of a ceiling and an embodiment of a ceiling machine of the present application;

[0045] Figure 3 A schematic diagram showing the connection between the ceiling and the ceiling machine of the present application from another perspective;

[0046] Figure 4A schematic diagram showing the connection between the ceiling and the ceiling machine of the present application from another perspective;

[0047] Figure 5 A schematic diagram of the connection between the ceiling and the ceiling machine of the present application from another perspective;

[0048] Figure 6 A schematic diagram of the cross-sectional connection between the ceiling and the panel of the ceiling machine of the present application;

[0049] Figure 7 for Figure 6 A partial enlarged view of the middle A;

[0050] Figure 8 for Figure 6 A schematic structural diagram of another embodiment of a panel of a ceiling machine is shown.

[0051] Description of Figure Numbers:

[0052] 100, ceiling machine; 10, machine body; 11, machine casing; 11a, return air outlet; 13, electronic control component; 15, hanging component; 151, bracket; 153, adjustment bolt; 155, hanging component; 17, connecting pipe component; 30, panel; 31, face frame; 31a, window; 31b, main window; 31c, sub-window; 31d, air outlet; 311, rotating slot; 313, fixing slot; 315, frame body; 317, frame; 33, return air grille; 331, first grille part; 333, second grille part; 335, rotating buckle; 337, fixing buckle; 300; ceiling.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0055] When the following description refers to 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. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0056] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood 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 the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in 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.

[0058] In the related art, the ceiling unit of the HVAC system can be embedded in the indoor ceiling to achieve a better hiding effect through the cover of the ceiling. Most ceiling units include a body and a panel, wherein the body is embedded in the ceiling and hung on the top surface of the wall, and the panel is set at the opening of the ceiling to cover the body and play a role in protecting, decorating and beautifying the body.

[0059] However, when the staff needs to repair or adjust the parts of the ceiling machine, such as the electronic control parts of the ceiling machine, the entire panel must be removed from the ceiling before subsequent repair or adjustment operations can be performed. This is inconvenient for the staff to operate, and generally speaking, the panel itself is large in size, which is not convenient for the staff to take and put.

[0060] In order to solve the above problems, the present application proposes a HVAC device. In the embodiment of the present application, the HVAC device includes but is not limited to air conditioners, multi-split units, heat pumps and other equipment, and can be used in large-scale places such as shopping malls and office buildings. Among them, the HVAC system may include an indoor unit, an outdoor unit (not shown in the figure) and a connecting pipe (not shown in the figure), and the indoor unit is connected to the outdoor unit through a connecting pipe so that the indoor unit and the outdoor unit form a circulation flow path. In some actual use scenarios, the indoor unit of the present application can be installed indoors, the outdoor unit is responsible for cooling or heating, and transports heat exchange media such as refrigerant and chilled water through a connecting pipe. The heat exchange medium performs heat exchange with the indoor air and the outdoor air respectively, and the indoor unit is responsible for transporting cold air or hot air to the room to achieve the effect of cooling or heating.

[0061] See also Figure 1Specifically, the indoor unit may include a ceiling unit 100, a duct unit or a wall-mounted air conditioner indoor unit, etc., wherein the ceiling unit 100 is usually embedded in the ceiling 300 in a suspended ceiling manner, so that the ceiling unit 100 is hidden by the ceiling 300. In this way, the ceiling unit 100 has a better hiding effect and is more beautiful than other indoor units. The following content still takes the indoor unit as the ceiling unit 100 to introduce the advantages of the indoor unit of this application, which has the advantages of convenient maintenance and adjustment.

[0062] Please refer to Figures 1 to 3 In some embodiments, the ceiling machine 100 may include a body 10 and a panel 30, the body 10 is embedded in the ceiling 300, the panel 30 is connected to the bottom of the body 10, the ceiling 300 is provided with a mounting port, the panel 30 is arranged at the mounting port and is fixedly connected to the ceiling 300.

[0063] See also Figure 4 The body 10 includes a housing 11 and an electronic control component 13. The housing 11 may be rectangular, defining the outline of the entire body 10. The housing 11 may be made of plastic, so that the housing 11 has the advantages of light weight, beautiful appearance, and not easy to crack. Of course, the housing 11 may also be made of metal, so that it has the advantages of high strength and good corrosion resistance, and the present application does not limit this.

[0064] The interior of the housing 11 is formed with an air duct and a return air port 11a and an air supply port (not shown in the figure) connecting the air duct, wherein the return air port 11a and the air supply port can be formed at the bottom of the housing 11, and the return air port 11a and the air supply port are arranged at intervals, so that the bottom of the housing 11 can realize return air and air supply, that is, the lower surface of the housing 11 has both the return air port 11a and the air outlet 31d. The air duct may include a receiving chamber, a heat exchange chamber and a fan chamber that are connected in sequence, wherein the receiving chamber is configured to accommodate the electric control component 13 of the body 10 and is connected to the return air port 11a, the heat exchange chamber is configured to accommodate the heat exchanger of the body 10, and the fan chamber is configured to accommodate the fan of the body 10 and is connected to the air supply port. In this way, the airflow flowing in from the return air port 11a will first flow through the accommodating cavity, and 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, and then the airflow is thrown to the air supply port under the drive of the fan, and finally the airflow flows out through the panel 30, thereby realizing the air supply function of the ceiling machine 100.

[0065] The electric control component 13 may include electronic devices such as an electric control box and a main control component, wherein the electric control box is electrically connected to the fan and the heat exchanger respectively to control or adjust the fan and the heat exchanger. For example, when the temperature in the environment where the ceiling fan 100 acts reaches a set value, a command can be sent through the electric control box to turn off the fan, thereby reducing energy consumption and preventing the indoor temperature from being too low or too high. The electric control component 13 is accommodated in the housing 11, that is, it can be accommodated in the accommodating cavity of the housing 11 and exposed by the return air port 11a. It can be understood that the electric control component 13 will be provided with a wiring port for electrical connection with external electronic components. When the electric control component 13 is accommodated in the housing 11, the wiring port can be arranged toward the return air port 11a.

[0066] Please refer to Figures 2 to 4 The panel 30 includes a face frame 31 and a return air grille 33. The face frame 31 serves as the main frame of the panel 30 and defines the outline of the entire panel 30. The face frame 31 may be rectangular or square, etc. The shape and size of the face frame 31 need to be compatible with the installation port of the ceiling 300. The face frame 31 may be made of plastic material so that the face frame 31 has the advantages of light weight and beautiful appearance. Of course, the face frame 31 may also be made of metal material so that it has the advantages of high strength and good corrosion resistance. This application does not limit this. The face frame 31 is connected to the bottom of the housing 11 and has a window 31a. The window 31a is connected to the return air port 11a. The window 31a may be in a long strip shape.

[0067] The return air grille 33 is movably connected to the face frame 31 to open or cover the window 31a. The movable connection may be in the form of a rotating connection, a pull-out connection, or a magnetic connection, and the present application does not limit this. When the return air grille 33 covers the window 31a, the return air grille 33 can prevent the user or maintenance personnel from inserting their hands into the air duct of the casing 11, and the return air grille 33 can also block external debris to prevent external debris from entering the air duct of the casing 11 and affecting the electronic control components 13, the heat exchanger, and the fan. In this way, while ensuring the safety of use and maintenance, the service life of the ceiling machine 100 is effectively extended.

[0068] When the window 31a of the return air grille 33 is opened, the electric control component 13 can be exposed through the window 31a. In this way, the staff can operate or repair the electric control component 13 through the window 31a and the return air port 11a in sequence after opening the return air grille 33. In summary, the ceiling machine 100 of the present application has at least the following technical effects:

[0069] By setting a movable connection between the return air grille 33 and the face frame 31, when the staff needs to operate or repair the electronic control component 13, they only need to operate the return air grille 33 so that the return air grille 33 can open the window 31a. Compared with the related art that requires the panel 30 to be removed from the ceiling 300 as a whole, this embodiment does not need to remove the face frame 31 of the panel 30 while being able to operate the return air grille 33 to open or cover the window 31a. This arrangement facilitates operation by the staff and improves operation efficiency and maintenance efficiency.

[0070] Furthermore, based on the arrangement that the electric control component 13 is accommodated in the housing 11 and can be exposed by the return air port 11a, firstly, when the ceiling machine 100 turns on the air supply function, the heat generated by the electric control component 13 during operation can be taken away by the air flow flowing in from the return air port 11a, thereby improving the heat dissipation effect of the electric control component 13; furthermore, the wiring port of the electric control component 13 can face the return air port 11a and the window 31a, so that when the staff is wiring, they can face the wiring port through the window 31a to perform a series of operations such as wiring, which is more convenient than setting the electric control component 13 in the housing. The shell 11 is outside and the wiring port is facing one side in the horizontal direction, which is more convenient to operate. Finally, compared with the form in which the electric control component 13 is arranged outside the shell 11 and connected to the shell 11, the form in which the electric control component 13 is accommodated in the shell 11 in the embodiment of the present application can reduce the overall volume of the ceiling machine 100, and the electric control component 13 can be operated directly through the installation port of the ceiling 300, without the need to provide an additional maintenance port on the ceiling 300 to repair the electric control component 13 located outside the shell 11, making the ceiling 300 more beautiful and simple.

[0071] Please refer to Figures 3 to 5 In some embodiments, the machine body 10 further includes a hanging component 15, which is arranged outside the housing 11 and connected to the machine body 10. It is understandable that one end of the hanging component 15 is connected to the top wall, and the other end is connected to the housing 11, so as to hang the ceiling machine 100 and embed it in the ceiling 300. The window 31a includes a main window 31b and a sub-window 31c, wherein the main window 31b is arranged toward the return air outlet 11a, and the sub-window 31c is located on one side of the main window 31b and is arranged corresponding to the hanging component 15. In this way, the staff can not only perform a series of operations such as maintenance of the electric control component 13 through the main window 31b of the window 31a, but also adjust the hanging component 15 through the sub-window 31c of the window 31a, on the basis of operating only the return air grille 33 without disassembling the entire panel 30, but also adjust the hanging component 15 through the sub-window 31c of the window 31a, which is very convenient to operate and greatly improves the maintenance efficiency of the staff.

[0072] Furthermore, the connection position between the housing 11 and the hanging component 15 is adjustable. Thus, the staff can adjust the connection position between the housing 11 and the hanging component 15 through the sub-window 31c of the window 31a, thereby achieving height adjustment of the body 10 of the ceiling machine 100.

[0073] In an actual operation process, the staff will install the ceiling 300, then suspend the body 10 through the installation opening of the ceiling 300, and finally fix the panel 30 to the body 10. At this time, it is easy for the panel 30 and the installation opening of the ceiling 300 to be misaligned in the height direction. In this way, the staff operates the return air grille 33 after installing the panel 30 to adjust the connection position of the casing 11 and the hanging component 15 when the window 31a of the return air grille 33 is opened, so that the panel 30 and the installation opening of the ceiling 300 correspond in the height direction, and the outer side surface of the face frame 31 of the panel 30 is seamlessly connected to the mouth wall of the installation opening.

[0074] In another actual operation process, the staff will first install the ceiling of the body 10, then fix the panel 30 to the body 10, and finally install the ceiling 300. At this time, it is also easy for the panel 30 and the installation opening of the ceiling 300 to be misaligned in the height direction. In this way, the staff operates the return air grille 33 after installing the ceiling 300 to adjust the connection position of the casing 11 and the hanging component 15 when the window 31a of the return air grille 33 is opened, so that the panel 30 and the installation opening of the ceiling 300 correspond in the height direction, and the outer side surface of the face frame 31 of the panel 30 is seamlessly connected to the mouth wall of the installation opening.

[0075] The specific structural form of the hanging component 15 is not specifically limited in the present embodiment, and may include but is not limited to the following two exemplary structural forms:

[0076] See also Figure 3 In the first structural form, the hanging component 15 includes a bracket 151, a hanging component 155 and an adjusting bolt 153. The bracket 151 is installed on the outside of the casing 11. One end of the hanging component 155 is connected to the top wall, and the other end is penetrated through the bracket 151. The adjusting bolt 153 is arranged on the side of the bracket 151 facing the window 31a and is threadedly connected with the hanging component 155. In this way, by rotating the adjusting bolt 153, the bracket 151 can drive the casing 11 to rise or fall, thereby realizing the adjustable position of the casing 11 and the hanging component 15.

[0077] In the second structural form, the hanging component 15 includes a hook (not shown in the figure) and a hanging rod (not shown in the figure), the hook is installed on the outside of the casing 11, and a plurality of fixing positions are arranged on the hanging rod, and the plurality of fixing positions are arranged at intervals along the extension direction of the hanging rod, wherein the hook can be selectively inserted into any fixing position to realize the adjustable position of the casing 11 and the hanging component 15.

[0078] Please refer to Figures 3 to 5 In some embodiments, the machine body 10 further includes a connecting pipe component 17, which is disposed on the outer wall of the casing 11. It can be understood that one end of the connecting pipe component 17 is connected to the heat exchanger, and the other end is connected to the connecting pipe to realize the refrigerant circulation between the ceiling unit 100 and the outdoor unit.

[0079] Among them, when the return air grille 33 opens the window 31a, the part of the pipe connecting component 17 that is arranged outside the housing 11 can be exposed by the sub-window 31c. In this way, the staff can operate the return air grille 33 without disassembling the entire panel 30, and can not only operate the electric control component 13 through the main window 31b of the window 31a, and operate the hanging component 15 through the sub-window 31c of the window 31a, but also operate the pipe connecting component 17 through the sub-window 31c of the window 31a, which is more convenient. In addition, the electric control component 13 accommodated in the housing 11 can be located at a different position from the part of the pipe connecting component 17 that is arranged outside the housing 11, so that the pipe connecting component 17 can avoid the situation where liquid drips onto the electric control component 13 due to pipeline leakage, etc., thereby ensuring the power safety of the ceiling machine 100.

[0080] See also Figure 5 In some embodiments, one side of the return air grille 33 is rotatably connected to the face frame 31, and the other side is snap-fitted to the face frame 31. In this way, the staff only needs to flip the return air grille 33 to open or cover the window 31a. Moreover, when the return air grille 33 is fixed or detached from the face frame 31, the snap-fitting fixing form does not require additional fixing connectors compared to other fixing forms such as threaded connection, and can be convenient for 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 33 when covering the window 31a, but also ensure the convenience of operation of the return air grille 33 when it is set movably.

[0081] See also Figure 6 to Figure 7Further, a rotating buckle 335 is provided on one side of the return air grille 33, and a rotating slot 311 is provided on the face frame 31; or a rotating slot 311 is provided on one side of the return air grille 33, and a rotating buckle 335 is provided on the face frame 31. The rotating buckle 335 and the rotating slot 311 are rotatably matched, so that the return air grille 33 can rotate relative to the face frame 31. In this way, the return air grille 33 can rotate relative to the face frame 31 to open or cover the window 31a, and the rotating buckle 335 can be disconnected from the rotating buckle 335. On this basis, when the return air grille 33 is disconnected from the face frame 31, the return air grille 33 can be disassembled from the face frame 31, so as to facilitate the maintenance or replacement of the return air grille 33. For example, when too much dust accumulates on the return air grille 33, the return air grille 33 can be disassembled to clean the return air grille 33 in time. In other embodiments, one side of the return air grille 33 may also be rotatably connected to the surface frame 31 via a rotating shaft, which is not limited in the present application.

[0082] In order to improve the stability of the return air grille 33 and the face frame 31 during rotation, please refer to Figure 5 In some structural forms, a plurality of rotating buckles 335 are provided, and the plurality of rotating buckles 335 are arranged at intervals along the length direction of the return air grille 33, and a plurality of rotating slots 311 are provided, wherein the plurality of rotating buckles 335 correspond to the plurality of rotating slots 311 one by one. In this way, the stability of the rotation between the return air grille 33 and the face frame 31 can be improved by providing a plurality of rotating buckles 335 and a plurality of rotating slots 311 in the length direction of the return air grille 33. Of course, in other structural forms, the number of rotating buckles 335 and the number of rotating slots 311 are both set to be single, and the rotating buckle 335 can be provided in the middle of the return air grille 33 along its length direction, and cooperate with the rotating slot 311, and the embodiment of the present application does not limit this.

[0083] In order to improve the stability of the return air grille 33 and the face frame 31 when the return air grille 33 covers the window 31a, please continue to refer to Figure 5In some structural forms, a fixing buckle 337 is provided on the other side of the return air grille 33, and a fixing slot 313 is provided on the face frame 31; or a fixing slot 313 is provided on the other side of the return air grille 33, and a fixing buckle 337 is provided on the face frame 31, and the fixing buckle 337 is engaged with the fixing slot 313, wherein a plurality of fixing buckles 337 are provided, and the plurality of fixing buckles 337 are arranged at intervals along the circumference of the return air grille 33, and a plurality of fixing slots 313 are provided, and the plurality of fixing buckles 337 correspond to the plurality of fixing slots 313 one by one. In this way, by providing a plurality of fixing buckles 337 and a plurality of fixing slots 313 on the circumference of the return air grille 33, the stability of the return air grille 33 and the face frame 31 when they are relatively fixed can be improved. Of course, in other structural forms, the number of fixing buckles 337 and fixing slots 313 are both set to be single. The fixing buckle 337 can be set in the middle of the return air grille 33 along its length direction and cooperate with the fixing slot 313. The embodiment of the present application does not limit this.

[0084] See also Figure 8 In some embodiments, the face frame 31 includes a frame body 315 and a frame 317. The frame 317 is connected to the frame body 315 and is disposed in the middle of the frame body 315 to separate the inside of the frame body 315 into an air outlet 31d and a window 31a. The air outlet 31d is connected to the air supply port, wherein one side of the return air grille 33 is rotatably connected to the frame 317. In this way, when the return air grille 33 opens the window 31a, the return air grille 33 is hung on the frame 317 of the face frame 31, that is, hung in the middle of the face frame 31. Compared with the form in which one side of the return air grille 33 is rotatably connected to one edge of the frame body 315, the face frame 31 can be subjected to a more even force, thereby reducing the possibility that a local position of the frame body 315 is subjected to excessive force and deformed to cause damage.

[0085] See also Figure 5In some embodiments, the hanging component 15 includes two parts and is respectively connected to opposite sides of the housing 11, and the sub-window 31c includes two parts, and the two sub-windows 31c correspond to the two hanging components 15 one by one. The return air grille 33 includes a first grille portion 331 and a second grille portion 333, the first grille portion 331 is movably connected to the face frame 31, and the second grille portion 333 includes two parts and is respectively connected to opposite sides of the first grille portion 331, and each second grille portion 333 is an integral structure with the first grille portion 331, wherein the first grille portion 331 is used to open or cover the main window 31b, and a second grille portion 333 is used to open or cover a sub-window 31c. With such a configuration, the staff can only perform active operations such as flipping the first grille portion 331, and can realize that the second grille portion 333 opens or covers the sub-window 31c while realizing that the first grille portion 331 opens or covers the main window 31b, and the operation steps are relatively few. In addition, since the first grille portion 331 and the second grille portion 333 are an integrated structure, there is no splicing gap between the first grille portion 331 and the second grille portion 333, so that the appearance of the return air grille 33 is better in integrity, and the overall strength of the return air grille 33 is also better, more durable, and more suitable for long-term flip settings.

[0086] See also Figure 8 Optionally, the second grille portion 333 can also be a separate structure from the first grille portion 331 and can be detachably connected to the face frame 31. It is understandable that the second grille portion 333 can be a plate structure and is adapted to the shape of the sub-window 31c. In this way, the staff can selectively operate the first grille portion 331 or the second grille portion 333 according to the actual required operation conditions to selectively open the main window 31b or the sub-window 31c, which is more flexible. For example, when only the hanging component 15 or the pipe component 17 is operated, the second grille portion 333 can be selectively disassembled to open the sub-window 31c. For another example, when only the electric control component 13 is operated, the first grille portion 331 can be selectively disassembled to open the main window 31b. Furthermore, in the embodiment of the present application, the staff does not need to flip the first grille portion 331 to open the main window 31b before operating the second grille portion 333 to open the secondary window 31a. It can be understood that the first grille portion 331 and the second grille portion 333 do not interfere with each other, and the staff can operate the first grille portion 331 and the second grille portion 333 separately with relative flexibility and freedom, which is more convenient.

[0087] On the basis that the second grille portion 333 and the first grille portion 331 are separate structures and are detachably connected to the face frame 31, in some structural forms, each second grille portion 333 is detachably connected to the face frame 31 by at least one connection method selected from the group consisting of a snap connection, a threaded connection, and a magnetic connection. In this way, the above-mentioned multiple detachable methods make it convenient for the staff to operate, and the structure of the second grille portion 333 and the face frame 31 is also relatively simple.

[0088] For example, the second grille portion 333 may be provided with a slide buckle, and the face frame 31 may be provided with a slide groove. Through the snap-fitting cooperation between the slide buckle and the slide groove, the second grille portion 333 may be slidably inserted and snap-fitted with the face frame 31 from left to right in the horizontal direction, or the second grille portion 333 may be slidably inserted and snap-fitted with the face frame 31 from right to left in the horizontal direction. For another example, the second grille portion 333 and the face frame 31 may be provided with threaded holes, and a threaded fastener may be sequentially inserted through the threaded holes of the second grille portion 333 and the threaded holes of the face frame 31 to achieve a threaded connection between the second grille portion 333 and the face frame 31. For another example, the second grille portion 333 may be provided with a first magnetic member on the side facing the face frame 31, and the face frame 31 may be provided with a second magnetic member. Through the magnetic cooperation between the first magnetic member and the second magnetic member, the magnetic connection between the second grille portion 333 and the face frame 31 may be achieved.

[0089] See also Figure 8 In some structural forms, in the width direction of the return air grille 33, the width of each sub-window 31c is greater than the width of the main window 31b, and the width of the second grille portion 333 is greater than the width of the first grille portion 331. It is understandable that the end of each sub-window 31c in the width direction of the return air grille 33 can extend to one side of the air outlet 31d in the length direction of the return air grille 33. On the basis that the sub-window 31c does not interfere with the air outlet 31d, by expanding the opening area of ​​the sub-window 31c, a larger space is provided for the staff to operate the hanging component 15 and the pipe component 17, so that it is more convenient for the staff to operate through the sub-window 31c.

[0090] See also Figure 6 In some embodiments, the outer edge of the face frame 31 is provided with a limiting rib (not shown in the figure) for limiting and cooperating with the limiting groove of the ceiling 300. In this way, the frame body 315 of the face frame 31 and the ceiling 300 are fixedly connected through the limiting cooperation between the limiting member and the limiting groove, and the accuracy of the relative position between the frame body 315 of the face frame 31 and the ceiling 300 can be improved, and the outer side surface of the frame body 315 and the wall of the installation opening can be seamlessly connected.

[0091] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this 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 position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0092] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A ceiling machine, characterized in that, The machine body comprises a housing and an electric control component. A return air port is formed below the housing. The electric control component is accommodated in the housing and can be exposed from the return air port. The panel comprises: a face frame connected to the lower side of the housing and having a window, wherein the window is connected to the return air port; and A return air grille, movably connected to the face frame to open or cover the window; Wherein, when the return air grille opens the window, the electronic control component can be exposed through the window.

2. The ceiling machine according to claim 1, 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.

3. The ceiling machine according to claim 2, characterized in that: 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.

4. The ceiling machine according to claim 3, characterized in that: There are a plurality of rotating buckles, which are arranged at intervals along the length direction of the return air grille, and there are a plurality of rotating slots; Among them, the plurality of rotating buckles correspond one to one with the plurality of rotating slots.

5. The ceiling machine according to claim 2, characterized in that: An air supply port is also formed below the housing and is spaced apart from the air return port; The face frame includes a frame body and a frame, wherein the frame is connected to the frame body and arranged in the middle of the frame body to separate the air outlet and the window inside the frame body, and the air outlet is connected to the air supply port; Wherein, one side of the return air grille is rotatably connected to the frame.

6. The ceiling machine according to claim 2, characterized in that: 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.

7. The ceiling machine according to any one of claims 1 to 6, characterized in that: The machine body further comprises a hanging component, which is arranged outside the housing and connected to the housing; The window comprises a main window and a sub-window, wherein the main window is arranged toward the return air outlet, and the sub-window is located at one side of the main window and is arranged corresponding to the hanging component.

8. The ceiling machine according to claim 7, characterized in that: The said hanging components include two and are respectively connected to opposite sides of the said housing, the said sub-windows include two, and the two said sub-windows correspond to the two said hanging components one by one; Wherein, the return air grille comprises: A first grille portion movably connected to the face frame; and The second grille portion includes two parts connected to opposite sides of the first grille portion, and each of the second grille portions is an integral structure with the first grille portion; The first grille portion is used to open or cover the main window, and the second grille portion is correspondingly used to open or cover a sub-window.

9. The ceiling machine according to claim 7, characterized in that: The said hanging components include two and are respectively connected to opposite sides of the said housing, the said sub-windows include two, and the two said sub-windows correspond to the two said hanging components one by one; Wherein, the return air grille comprises: A first grille portion movably connected to the face frame; and The second grille parts include two parts which are respectively arranged on opposite sides of the first grille part, each of the second grille parts is a separate structure from the first grille part, and is detachably connected to the face frame; The first grille portion is used to open or cover the main window, and the second grille portion is correspondingly used to open or cover a sub-window.

10. The ceiling machine according to claim 9, characterized in that: In the width direction of the return air grille, the width of each of the sub-windows is greater than the width of the main window, and the width of the second grille portion is greater than the width of the first grille portion.

11. The ceiling machine according to claim 9, characterized in that: Each of the second grille parts is detachably connected to the face frame by at least one of a snap connection, a threaded connection and a magnetic connection.

12. The ceiling machine according to claim 7, characterized in that: The machine body further comprises a connecting pipe component, and the connecting pipe component is arranged through the outer wall surface of the housing; Wherein, when the return air grille opens the window, the portion of the connecting pipe component that passes through the outside of the casing can be exposed through the sub-window.

13. The ceiling machine according to claim 7, characterized in that: The connection position between the casing and the hanging component is adjustable.

14. The ceiling machine according to any one of claims 1 to 6, characterized in that: The machine body is used to be embedded in the ceiling; Wherein, the outer edge of the surface frame is provided with limiting ribs for limiting cooperation with the limiting grooves of the ceiling.

15. A HVAC system, characterized in that: It comprises a ceiling unit and an outdoor unit as described in any one of claims 1 to 14, wherein the ceiling unit is connected to the outdoor unit.

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