Indoor unit of air conditioner

Abstract

The utility model provides an air conditioner indoor unit which comprises a shell and an oxygen generating device, and the oxygen generating device is arranged in the shell and configured to generate oxygen provided for the space where the shell is located. According to the air conditioner indoor unit, due to the fact that the oxygen generating device is arranged in the shell, oxygen needed by a user can be generated while indoor refrigeration or heating is conducted, indoor oxygen is effectively supplemented, the indoor air quality is improved, and the situation that people are in a closed environment for a long time, and the health of the human body is affected is avoided; the device is especially suitable for users who have diseases and need oxygen. The oxygen generating device is integrated in the air conditioner indoor unit, the structure is compact, extra space is not occupied, and the air conditioner indoor unit is particularly suitable for an embedded air conditioner indoor unit.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an indoor air conditioning unit. Background Technology

[0002] As living standards improve, people's demands for indoor air quality are also increasing. To ensure the cooling or heating effect of air conditioners, users often use them in enclosed indoor environments. However, prolonged exposure to enclosed environments can lead to a decrease in indoor oxygen levels, affecting human health. While existing air conditioning products have functions such as fresh air exchange and purification, they cannot effectively solve the problem of declining indoor oxygen levels. Furthermore, for users with medical conditions who require oxygen, a separate oxygen concentrator and air conditioner must be purchased. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an air conditioner indoor unit that overcomes or at least partially solves the above problems, and can solve the problem of air conditioning oxygen production, so as to generate the oxygen required by the user while cooling or heating the room, and is particularly suitable for users who need oxygen due to illness.

[0004] Specifically, this utility model provides an indoor air conditioning unit, which includes a housing and an oxygen generating device. The oxygen generating device is disposed inside the housing and configured to generate oxygen for supplying to the space where the housing is located.

[0005] Optionally, the oxygen generating device is a molecular sieve oxygen generator, which has an oxygen outlet and an exhaust gas outlet, and the exhaust gas outlet is connected to the outside of the space where the housing is located via an exhaust gas outlet pipe.

[0006] The molecular sieve oxygen generator includes:

[0007] A nitrogen adsorption unit, wherein the nitrogen adsorption unit has the oxygen outlet and the waste gas outlet;

[0008] A pressurizing device is connected to the nitrogen adsorption section via a connecting pipe to supply air into the nitrogen adsorption section.

[0009] Optionally, it may also include a drip tray;

[0010] At least a portion of the connecting pipe is disposed inside the water receiving pan, or at least a portion of the connecting pipe is disposed outside the water receiving pan, and at least a portion of the connecting pipe is thermally connected to the condensate in the water receiving pan.

[0011] Optionally, it also includes: a heat exchanger disposed within the air duct defined by the housing;

[0012] The inlet of the pressurizing device is located in the air duct, near the heat exchanger, and downstream of the heat exchanger;

[0013] The oxygen outlet is connected to the outside of the housing, or the oxygen outlet is located in the air duct, and the oxygen outlet is located downstream of the inlet of the pressurizing device.

[0014] Optionally, the front of the housing is provided with an air inlet and an air outlet facing forward, with the air inlet located on one side of the air outlet; the air inlet and the air outlet are connected through an air duct defined by the housing.

[0015] Both the air inlet and the air outlet extend along the length of the housing.

[0016] The oxygen outlet is connected to the air duct.

[0017] Optionally, it also includes a heat exchanger disposed within the air duct defined by the housing;

[0018] The oxygen outlet is located within the air duct and upstream of the heat exchanger. The oxygen outlet is adjacent to the air inlet and faces rearward. The oxygen outlet extends along the length of the housing. In the vertical direction, the oxygen outlet is located between the upper and lower edges of the air inlet.

[0019] Optionally, the heat exchanger includes a first heat exchange section and a second heat exchange section; the connection between the first heat exchange section and the second heat exchange section is located directly behind the oxygen outlet.

[0020] Optionally, there are two nitrogen adsorption units, and the two oxygen outlets are respectively located at the two vertical edges of the air inlet. The oxygen outlets extend vertically and face obliquely to the rear.

[0021] Optionally, the oxygen outlet is located at the lower edge of the air inlet, the oxygen outlet extends along the length of the housing, and the oxygen outlet faces obliquely upward and backward.

[0022] Optionally, the nitrogen adsorption section extends along the length of the housing, and the oxygen outlet is provided on the peripheral wall of the nitrogen adsorption section.

[0023] Optionally, the air inlet is located above the air outlet;

[0024] An air inlet grille is provided at the air inlet, and the front end of the grille plate is located on the upper front side of the rear end; or,

[0025] An air inlet panel is movably provided at the air inlet. After the air inlet is opened, the upper end of the air inlet panel is located on the upper front side of the lower end of the air inlet panel.

[0026] Optionally, it may also include a guide rail, a drive arm, and a connecting rod;

[0027] The lower end of the air inlet panel is rotatably mounted at the air inlet. The guide rail is set on the inner wall of the air inlet panel. The guide rail is perpendicular to the rotation axis of the air inlet panel. The guide rail has a sliding groove, and a sliding part is slidably installed in the sliding groove.

[0028] The drive arm is movable along the inside and outside of the housing; one end of the connecting rod is fixedly connected to the sliding part, and the other end is rotatably connected to the drive arm; the connecting rod is inclined relative to the extension direction of the guide rail.

[0029] The indoor unit of this air conditioner features an oxygen-generating device within its casing. This device generates the oxygen needed by the user while the unit is cooling or heating, effectively supplementing indoor oxygen levels, improving indoor air quality, and preventing the health risks associated with prolonged exposure to a closed environment. It is particularly suitable for users with medical conditions who require oxygen. Furthermore, integrating the oxygen-generating device into the indoor unit results in a compact structure that does not require additional space.

[0030] Furthermore, in the indoor unit of this air conditioner, the oxygen generating device adopts a molecular sieve oxygen generator structure, which has high oxygen generation efficiency and can replenish indoor oxygen in a timely manner. At the same time, the molecular sieve oxygen generator requires no replacement of consumables and has a long service life.

[0031] Furthermore, in the indoor unit of this air conditioner, by placing the inlet of the pressurizing device downstream of the heat exchanger, the air is pre-cooled by the heat exchanger, and then pressurized, which can improve oxygen production efficiency. Alternatively, the condensate generated in the drip tray can be used to cool the pressurized air, thereby improving oxygen production efficiency.

[0032] Furthermore, in the indoor unit of the air conditioner of this utility model, by setting the oxygen outlet inside the air duct, good mixing of oxygen and indoor air can be achieved, improving the mixing efficiency of oxygen and air, and thus improving the diffusion efficiency of oxygen in the room.

[0033] Furthermore, in the indoor unit of the air conditioner of this utility model, by setting the oxygen outlet horizontally to the rear, an air curtain can be formed, so that the airflow from the air inlet is appropriately separated, which facilitates the flow of air in the air duct and its good distribution on the heat exchanger, thereby improving the airflow efficiency and the heat exchange efficiency of the heat exchanger.

[0034] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0035] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0036] Figure 1 This is a schematic structural diagram of an indoor air conditioner unit according to an embodiment of the present utility model;

[0037] Figure 2 This is a schematic structural diagram of a molecular sieve oxygen generator in an air conditioner indoor unit according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic structural diagram of another molecular sieve oxygen generator in an air conditioner indoor unit according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic structural diagram of an indoor air conditioner unit according to an embodiment of the present utility model. The dotted line in the diagram represents the airflow from the oxygen outlet.

[0040] Figure 5 This is a schematic structural diagram of an indoor air conditioner unit according to an embodiment of the present utility model. The dotted line in the diagram represents the airflow from the oxygen outlet.

[0041] Figure 6 This is a schematic structural diagram of an indoor air conditioner unit according to an embodiment of the present utility model;

[0042] Figure 7 yes Figure 6 A schematic partial structural diagram of the indoor unit of the air conditioner shown;

[0043] Figure 8 yes Figure 7 A magnified schematic view of point A in the middle. Detailed Implementation

[0044] The following reference Figures 1 to 8This description pertains to an indoor air conditioning unit according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0045] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] Figure 1 This is a schematic structural diagram of an air conditioner indoor unit according to an embodiment of the present invention, such as... Figure 1 As shown, and with reference Figures 2 to 5 This utility model provides an indoor air conditioning unit, which includes a housing 10 and an oxygen generating device. The oxygen generating device is disposed inside the housing 10 and configured to generate oxygen to be supplied to the space where the housing 10 is located.

[0049] In the indoor unit of this utility model, an oxygen generating device is installed inside the casing 10, which can generate the oxygen needed by the user while cooling or heating the room. This effectively replenishes indoor oxygen, improves indoor air quality, and avoids the health effects of being in a closed environment for a long time. It is especially suitable for users who need oxygen due to illness. Moreover, integrating the oxygen generating device into the indoor unit results in a compact structure that does not occupy extra space, making it particularly suitable for embedded indoor air conditioning units.

[0050] In some embodiments of this utility model, the indoor unit of the air conditioner is preferably an embedded indoor unit. This type of indoor unit is embedded in the ceiling, wall, cabinet, furniture, or other appliances, with only a decorative panel exposed inside the room, thus not occupying usable indoor space and improving the aesthetics of the room. In some embodiments of this utility model, the indoor unit can also be a wall-mounted unit, a floor-standing unit, etc.

[0051] In some embodiments of this utility model, the oxygen generating device is a molecular sieve oxygen generator. The molecular sieve oxygen generator has an oxygen outlet and an exhaust gas outlet, with the exhaust gas outlet connected to the outside of the space where the housing 10 is located via an exhaust gas outlet pipe 28. The molecular sieve oxygen generator is a device that utilizes pressure swing adsorption (PSA) technology to selectively adsorb nitrogen through molecular sieve materials, thereby separating high-concentration oxygen from the air. Its core feature is that it achieves oxygen enrichment solely through physical adsorption, without the need for chemical reactions. The oxygen generating device adopts a molecular sieve oxygen generator structure, resulting in high oxygen generation efficiency and timely replenishment of indoor oxygen. Furthermore, the molecular sieve oxygen generator requires no replacement of consumables and has a long service life.

[0052] In some embodiments of this utility model, such as Figure 2 As shown, the molecular sieve oxygen generator includes a nitrogen adsorption section 21 and a pressurization device 22. The nitrogen adsorption section 21 has an oxygen outlet 25 and a waste gas outlet. The pressurization device 22 is connected to the nitrogen adsorption section 21 via a connecting pipe 23 to supply air into the nitrogen adsorption section 21.

[0053] During operation, the pressurizing device 22 pressurizes the air and delivers it to the nitrogen adsorption section 21. After the nitrogen and other gases are absorbed, the remaining oxygen is discharged through the oxygen outlet 25. When the molecular sieve in the nitrogen adsorption section 21 needs regeneration, the pressure is reduced, and the nitrogen in the nitrogen adsorption section 21 is discharged outdoors through the exhaust outlet and exhaust pipe 28. In some alternative embodiments, the nitrogen discharged through the exhaust outlet can also be collected by a nitrogen collection device.

[0054] In some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the indoor unit of the air conditioner also includes a drip tray 11, which is configured to receive condensate. At least a portion of the connecting pipe 23 is disposed within the drip tray 11, or at least a portion of the connecting pipe 23 is disposed outside the drip tray 11, and at least a portion of the connecting pipe 23 is thermally connected to the condensate in the drip tray 11. After passing through the pressurization device 22, the air temperature rises. When the air passes through the connecting pipe 23, it can exchange heat with the condensate in the drip tray 11, thus lowering its temperature. Then, it enters the nitrogen adsorption section 21, which can improve the adsorption efficiency of nitrogen and other gases, thereby improving the oxygen production efficiency.

[0055] In some embodiments of this utility model, such as Figure 1 As shown, the indoor unit of the air conditioner also includes a heat exchanger 14, which is disposed within the air duct defined by the housing 10. A drip tray 11 is used to receive condensate produced by the heat exchanger 14. The inlet of the pressurizing device 22 is disposed within the air duct, adjacent to the heat exchanger 14, and downstream of the heat exchanger 14. By lowering the temperature of the intake air, the temperature of the gas entering the nitrogen adsorption section 21 is reduced, thereby improving oxygen production efficiency. In some embodiments of this invention, the oxygen outlet 25 communicates with the outside of the housing 10. In some embodiments of this invention, the oxygen outlet 25 is disposed within the air duct, and the oxygen outlet 25 is located downstream of the inlet of the pressurizing device 22.

[0056] In some embodiments of this utility model, such as Figure 1 , Figure 4 and Figure 5 As shown, the front of the housing 10 is provided with an air inlet 12 and an air outlet 13 with the opening facing forward, and the air inlet 12 is located on one side of the air outlet 13. The air inlet 12 and the air outlet 13 are connected by an air duct defined by the housing 10.

[0057] Preferably, both the air inlet 12 and the air outlet 13 extend along the length of the housing 10. The air inlet 12 is located above the air outlet 13. This arrangement facilitates embedding the indoor unit of the air conditioner into the wall or furniture.

[0058] The oxygen outlet 25 is connected to the air duct, so there is no need to set up a separate connection port for the oxygen outlet 25 in the housing 10, which reduces the number of holes on the housing 10, improves the aesthetics, and facilitates the mixing of oxygen and cooling / heating airflow, and its rapid distribution in the room.

[0059] In some embodiments of this utility model, such as Figure 4As shown, the oxygen outlet 25 is located within the air duct and upstream of the heat exchanger 14. The oxygen outlet 25 is adjacent to the air inlet 12, faces rearward, and extends along the length of the casing 10. Vertically, the oxygen outlet 25 is positioned between the upper and lower edges of the air inlet 12. The heat exchanger 14 includes a first heat exchange section 141 and a second heat exchange section 142. The connection between the first heat exchange section 141 and the second heat exchange section 142 is located directly behind the oxygen outlet 25. Further, the connection between the first heat exchange section 141 and the second heat exchange section 142 is at the highest point of the heat exchanger 14.

[0060] In the indoor unit of the air conditioner in this embodiment of the utility model, by setting the oxygen outlet 25 horizontally to the rear, an air curtain can be formed, so that the airflow from the air inlet 12 is properly separated, which facilitates the airflow in the air duct and is well distributed on the heat exchanger 14, thereby improving the airflow efficiency and the heat exchange efficiency of the heat exchanger 14.

[0061] In other embodiments of this utility model, such as Figure 1 As shown, there are two nitrogen adsorption units 21, and two oxygen outlets 25 are respectively located at the two vertical edges of the air inlet 12. The oxygen outlets 25 extend vertically and face obliquely to the rear. By providing two nitrogen adsorption units 21, while one nitrogen adsorption unit 21 is producing oxygen, the other nitrogen adsorption unit 21 is regenerating. This design is simple and compact, facilitating the internal structural layout of the housing 10. The obliquely rearward orientation of the oxygen outlets 25 also facilitates the mixing of oxygen with air, allowing for rapid distribution into the room.

[0062] In other embodiments of this utility model, such as Figure 5 As shown, the oxygen outlet 25 is located at the lower edge of the air inlet 12. The oxygen outlet 25 extends along the length of the housing 10 and faces obliquely upward and backward, so as to facilitate the mixing of the air entering the air inlet 12 with the oxygen generated by the nitrogen adsorption section 21.

[0063] In some embodiments of this utility model, such as Figure 3 As shown, the nitrogen adsorption section 21 extends along the length of the housing 10, and an oxygen outlet 25 is provided on the peripheral wall of the nitrogen adsorption section 21. This facilitates the installation of the nitrogen adsorption device and makes reasonable use of the internal space of the housing 10, especially the space at the upper edge of the air outlet 13, i.e., the space at the lower edge of the air inlet 12. The nitrogen adsorption section 21 extends along the length of the housing 10, allowing it to be relatively thin and long, meeting oxygen production requirements while occupying less space; or it can provide a larger amount of oxygen. In some alternative embodiments of this invention, such as... Figure 2 As shown, an oxygen outlet pipe 27 is connected to the oxygen outlet to facilitate the direction of oxygen to a suitable location.

[0064] In some embodiments of this utility model, an air inlet grille 15 is provided at the air inlet 12, with the front end of the grille plate of the air inlet grille 15 located on the upper front side of the rear end. This arrangement reduces the mixing of the incoming and outgoing airflow, prevents the airflow flowing out of the housing 10 from immediately entering the housing 10 again, and improves the indoor cooling and heating efficiency.

[0065] In some alternative embodiments of this utility model, such as Figures 6 to 8 As shown, an air inlet panel 16 is movably installed at the air inlet 12. After the air inlet 12 is opened, the upper end of the air inlet panel 16 is located on the upper front side of the lower end of the air inlet panel 16.

[0066] In some embodiments of this utility model, such as Figures 6 to 8 As shown, the indoor unit of the air conditioner also includes a guide rail 31, a drive arm 32, and a connecting rod 33.

[0067] The lower end of the air inlet panel 16 is rotatably mounted at the air inlet 12 for opening or closing the air inlet 12. A guide rail 31 is disposed on the inner wall of the air inlet panel 16, perpendicular to the rotation axis of the air inlet panel 16. The guide rail 31 has a groove in which a sliding part 34 is slidably mounted. The drive arm 32 is movable along the inward and outward directions of the housing 10. One end of the connecting rod 33 is fixedly connected to the sliding part 34, and the other end is rotatably connected to the drive arm 32; the connecting rod 33 is inclined relative to the extending direction of the guide rail 31.

[0068] When the air conditioner is turned on, the drive arm 32 moves from the inside to the outside along the housing 10, driving the sliding part 34 to slide along the guide rail 31 via the connecting rod 33, thereby driving the air inlet panel 16 to rotate around the pivot and open the air inlet 12. When the air conditioner is turned off, the drive arm 32 moves in the opposite direction, and the connecting rod 33 drives the sliding part 34 to slide in the opposite direction along the guide rail 31, pulling the air inlet panel 16 back to the position where it completely covers the air inlet 12. This opening method, located at both ends of the air inlet, occupies less space and does not affect the installation of the oxygen generator, especially the installation of the nitrogen adsorption section extending along the length of the housing.

[0069] This embodiment reconstructs the force transmission path between the drive arm 32 and the sliding part 34 by adding an inclined connecting rod 33. When the drive arm 32 moves in and out of the housing 10, the inclined design of the connecting rod 33 decomposes the driving force into two components: a tangential component, which pushes the air inlet panel 16 to rotate around the axis along the guide rail direction through the sliding part 34, realizing the opening and closing of the air inlet 12; and a normal component, which uses the leverage effect of the connecting rod to continuously press the sliding part 34 against the inner wall of the groove. Even if the angle between the drive arm 32 and the air inlet panel 16 exceeds 90°, the connecting rod 33 still maintains the direction of the normal pressing force through its inclined angle, forming an adaptive compensation mechanism. This mechanism forcibly eliminates the fit gap between the sliding part and the groove, avoiding the motion instability of the traditional structure at critical angles and the jamming problem of the air inlet panel 16.

[0070] In some optional embodiments of this utility model, the sliding part 34 is a cuboid slider, and the length direction of the slider is parallel to the extension direction of the guide rail 31. This arrangement increases the contact area between the slider and the groove of the guide rail 31, thereby facilitating the stable rotation of the air inlet panel 16.

[0071] In some optional embodiments of this utility model, there are at least two drive arms 32, which are spaced apart. For example, there are two drive arms 32, which are respectively located at both ends of the air inlet 12. By setting two drive arms 32, this embodiment can further improve the stability of the air inlet panel 16 during operation.

[0072] In some optional embodiments of this invention, each drive arm 32 is inclined relative to the plane containing the air inlet 12. In some optional embodiments of this invention, the drive arm 32 is connected to a rack and pinion mechanism, which drives the drive arm 32 to move relative to the housing 10 in the inward and outward directions. In this embodiment, the rack and pinion mechanism has the advantages of high transmission accuracy, long service life, and stable and reliable operation. Using a rack and pinion mechanism to drive the drive arm 32 ensures the stability and reliability of the drive arm 32's movement.

[0073] In some embodiments of this utility model, one end of the guide rail 31 is rotatably connected to the air inlet panel 16, and the other end of the guide rail 31 is detachably connected to the air inlet panel 16. The detachable connection between the other end of the guide rail 31 and the air inlet panel can be achieved through a snap-fit ​​connection or a threaded connection. In this embodiment, when the guide rail 31 is fixed to the air inlet panel 16, the air inlet panel 16 can only open to a preset angle, such as 35 degrees. After separating the guide rail 16 from the air inlet panel 16, the air inlet panel 16 can open to more than 90 degrees, which is more conducive to air intake at the air inlet 12 and also facilitates the removal of the filter at the air inlet, thus facilitating filter cleaning.

[0074] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that, It includes a housing and an oxygen generating device, the oxygen generating device being disposed within the housing and configured to generate oxygen for supplying to the space in which the housing is located; The oxygen generating device is a molecular sieve oxygen generator, which has an oxygen outlet and an exhaust gas outlet. The exhaust gas outlet is connected to the outside of the space where the shell is located via an exhaust gas outlet pipe. The molecular sieve oxygen generator includes: A nitrogen adsorption unit, wherein the nitrogen adsorption unit has the oxygen outlet and the waste gas outlet; A pressurizing device is connected to the nitrogen adsorption section via a connecting pipe to supply air into the nitrogen adsorption section.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, It also includes a drip tray; At least a portion of the connecting pipe is disposed inside the water receiving pan, or at least a portion of the connecting pipe is disposed outside the water receiving pan, and at least a portion of the connecting pipe is thermally connected to the condensate in the water receiving pan.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, Also includes: A heat exchanger is disposed within the air duct defined by the housing; The inlet of the pressurizing device is located in the air duct, near the heat exchanger, and downstream of the heat exchanger; The oxygen outlet is connected to the outside of the housing, or the oxygen outlet is located in the air duct, and the oxygen outlet is located downstream of the inlet of the pressurizing device.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, The front of the housing is provided with an air inlet and an air outlet facing forward, with the air inlet located on one side of the air outlet; the air inlet and the air outlet are connected through an air duct defined by the housing. Both the air inlet and the air outlet extend along the length of the housing.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, It also includes a heat exchanger disposed within the air duct defined by the housing; The oxygen outlet is located within the air duct and upstream of the heat exchanger. The oxygen outlet is adjacent to the air inlet and faces rearward. The oxygen outlet extends along the length of the shell. In the vertical direction, the oxygen outlet is located between the upper and lower edges of the air inlet. The heat exchanger includes a first heat exchange section and a second heat exchange section; the connection between the first heat exchange section and the second heat exchange section is located directly behind the oxygen outlet; the connection between the first heat exchange section and the second heat exchange section is at the highest point of the heat exchanger.

6. The indoor unit of the air conditioner according to claim 4, characterized in that, The oxygen outlet is located at the lower edge of the air inlet, extends along the length of the housing, and faces obliquely upward and rearward; or... The nitrogen adsorption section consists of two parts, and the two oxygen outlets are respectively located at the two vertical edges of the air inlet. The oxygen outlets extend vertically and face obliquely to the rear.

7. The indoor unit of the air conditioner according to claim 5 or 6, characterized in that, The nitrogen adsorption section extends along the length of the shell, and the oxygen outlet is provided on the peripheral wall of the nitrogen adsorption section.

8. The indoor unit of the air conditioner according to claim 4, characterized in that, The air inlet is located above the air outlet; An air inlet grille is provided at the air inlet, with the front end of the grille plate located on the upper front side of the rear end; or, an air inlet panel is movably provided at the air inlet, with the upper end of the air inlet panel located on the upper front side of the lower end of the air inlet panel after the air inlet is opened.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, It also includes guide rails, drive arms, and connecting rods; The lower end of the air inlet panel is rotatably mounted at the air inlet. The guide rail is set on the inner wall of the air inlet panel. The guide rail is perpendicular to the rotation axis of the air inlet panel. The guide rail has a sliding groove, and a sliding part is slidably installed in the sliding groove. The drive arm is movable along the inside and outside of the housing; one end of the connecting rod is fixedly connected to the sliding part, and the other end is rotatably connected to the drive arm; the connecting rod is inclined relative to the extension direction of the guide rail; one end of the guide rail is rotatably connected to the air inlet panel, and the other end is detachably connected to the air inlet panel.

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