Air conditioner

Abstract

The present application belongs to the technical field of air conditioners, and specifically relates to an air conditioner, comprising a casing, wherein a mounting cavity is defined inside the casing; and a heat exchanger, wherein the heat exchanger is arranged in the mounting cavity and extends in a first direction intersecting a horizontal direction, and an air return duct and an air outlet duct are separately defined between the heat exchanger and the casing. The casing is provided with a first air return port and at least one second air return port, the first air return port and the second air return port being arranged on different side surfaces of the casing, respectively; and the air return duct is selectively in communication with at least one of the first air return port and the second air return port. By means of the technical solution of the present application, the air conditioner can adapt to different application scenarios during installation, and the heat exchange efficiency of the heat exchanger in the air conditioner can be improved, improving the cooling or heating effects of the air conditioner.

Description

air conditioner

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority of Chinese patent application 202410388862.X, filed on April 1, 2024, entitled “AIR CONDITIONER”, and the priority of Chinese patent application 202420658947.0, filed on April 1, 2024, entitled “AIR CONDITIONER”, and the entire contents of the above two applications are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0004] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0005] Air conditioners are primarily used to cool or heat a space occupied by a user. They typically have a housing, a heat exchanger within the housing, and return and outlet air vents.

[0006] In related technologies, the air conditioner casing usually has only one return air vent, and the location of the return air vent is limited by the installation and use scenarios of the air conditioner, which makes it unable to adapt to different installation and use scenarios. If the return air vent is against the wall or blocked, it will affect the return air volume, thereby affecting the heat exchange efficiency of the heat exchanger, and further affecting the cooling or heating effect of the air conditioner. Summary of the Invention

[0007] The purpose of this application is to at least solve the problem that air conditioners cannot adapt to different installation and use scenarios. This purpose is achieved by:

[0008] The present application proposes an air conditioner, comprising: a casing, wherein an installation cavity is defined inside the casing; a heat exchanger, wherein the heat exchanger is arranged in the installation cavity and extends along a first direction intersecting with the horizontal direction, and a return air duct and an outlet air duct are respectively defined between the heat exchanger and the casing; wherein the casing is provided with a first return air port and at least one second return air port, the first return air port and the second return air port are respectively provided on different sides of the casing, and the return air duct is selectively connected to at least one of the first return air port and the second return air port.

[0009] According to the air conditioner provided by the present application, the heat exchanger cooperates with the casing to form a return air duct and an outlet air duct within the casing. A first return air port and at least one second return air port are respectively provided on different sides of the casing, and at least one of the first return air port and the second return air port can supply air into the return air duct. The airflow enters the return air duct, exchanges heat with the heat exchanger, and then flows toward the outlet air duct, and then flows out from the outlet air duct. Since the heat exchanger is extended along a first direction intersecting the horizontal plane, a return air surface is formed on the side of the heat exchanger facing the return air duct. For example, the heat exchanger can be tilted relative to the horizontal plane within the casing. In this case, the heat exchanger occupies a smaller height space inside the casing, and the area of ​​the return air surface of the heat exchanger is relatively large, thereby increasing the heat exchange efficiency of the heat exchanger and helping to improve the cooling or heating efficiency of the air conditioner. Specifically, when installing the air conditioner, the return air duct can be selectively connected to at least one of the first return air outlet and the second return air outlet according to the installation and use scenario of the air conditioner. For example, when the first return air outlet needs to be blocked when the air conditioner is installed, the second return air outlet can be leaked out to connect the return air duct with the second return air outlet; when the second return air outlet needs to be blocked when the air conditioner is installed, the first return air outlet can be leaked out to connect the return air duct with the first return air outlet; when the first return air outlet and the second return air outlet do not need to be blocked when the air conditioner is installed, the return air duct can be connected to both the first return air outlet and the second return air outlet. At this time, since the first return air outlet and the second return air outlet can both take air into the return air duct, multi-directional return air can be achieved, which helps to increase the return air volume of the return air duct, and thus helps to further improve the heat exchange efficiency of the heat exchanger.

[0010] In addition, the air conditioner according to the present application may also have the following additional technical features:

[0011] In some embodiments of the present application, the casing includes: a base plate; a side panel assembly, which is arranged around the periphery of the base plate and defines the installation cavity between the side panel assembly and the base plate; a top plate, which is arranged on the side of the side panel assembly away from the base plate; wherein the top plate is provided with an air outlet connected to the air outlet duct, and the side panel assembly is provided with the first return air outlet and the second return air outlet.

[0012] The side plate assembly is arranged around the periphery of the bottom plate, thereby defining an installation cavity for accommodating the heat exchanger.

[0013] In some embodiments of the present application, the side panel assembly includes a first side panel, a second side panel, a third side panel and a fourth side panel connected end to end, the first side panel and the third side panel are symmetrically arranged on both sides of the width direction of the base panel, and the second side panel and the fourth side panel are symmetrically arranged on both sides of the length direction of the base panel; wherein, the first side panel is provided with the first return air outlet, and at least one of the second side panel, the third side panel and the fourth side panel is provided with the second return air outlet.

[0014] In some embodiments of the present application, the air conditioner further includes a filter assembly, which is disposed below the heat exchanger and corresponds to a position of the first return air outlet.

[0015] In some embodiments of the present application, the filter assembly extends along a second direction intersecting with the horizontal direction, and the bottom of the filter assembly abuts against the bottom plate, and the second direction is parallel to or intersecting with the first direction.

[0016] In some embodiments of the present application, a height of the first return air outlet along the vertical direction is not less than a distance between the top of the filter assembly and the third side panel.

[0017] In some embodiments of the present application, the second side panel and / or the fourth side panel is provided with the second return air outlet, and the second return air outlet corresponds to the position of the filter assembly;

[0018] Alternatively, the third side plate is provided with the second return air outlet, and the second return air outlet corresponds to the position of the heat exchanger.

[0019] In some embodiments of the present application, the angle between the first direction and the horizontal direction is α, 45°≤α≤90°.

[0020] In some embodiments of the present application, the opening size of the first return air vent is equal to the opening size of the air outlet.

[0021] In some embodiments of the present application, the first return air vent and / or the second return air vent is provided with a return air grille;

[0022] And / or, the air outlet is provided with an air outlet grille.

[0023] In some embodiments of the present application, the air conditioner further includes a water receiving box assembly, which is disposed below the heat exchanger, and the top of the filter assembly is connected to the water receiving box assembly.

[0024] In some embodiments of the present application, the air conditioner further includes an exhaust device, which is disposed in the air outlet duct and is connected to the air outlet duct and the air outlet, and is used to discharge the airflow in the air outlet duct from the air outlet.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. Throughout the drawings, the same reference numerals are used to denote the same components.

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. Throughout the drawings, the same reference numerals are used to denote the same components.

[0028] FIG1 is a schematic diagram of the three-dimensional structure of an air conditioner provided according to an embodiment of the present application;

[0029] FIG2 is a schematic diagram of a partial structure of an air conditioner provided from a first perspective according to an embodiment of the present application;

[0030] FIG3 is a schematic diagram of a partial structure of an air conditioner provided in accordance with an embodiment of the present application from a second viewing angle;

[0031] FIG4 is a schematic structural diagram of an air conditioner provided according to an embodiment of the present application from a third viewing angle;

[0032] FIG5 is a schematic structural diagram of an air conditioner according to an embodiment of the present application from a fourth perspective;

[0033] FIG6 is a schematic structural diagram of an air conditioner according to an embodiment of the present application from a fifth viewing angle;

[0034] The arrow direction in the casing in FIG3 indicates the flow direction of the gas.

[0035] The reference numerals in the accompanying drawings represent as follows: 100, air conditioner; 11, first side panel; 12, second side panel; 13, third side panel; 14, fourth side panel; 15, top panel; 16, return air duct; 17, outlet air duct; 20, heat exchanger; 30, filter assembly; 40, water collecting box assembly; 50, exhaust device; 111, first return air outlet; 141, second return air outlet; 151, outlet. DETAILED DESCRIPTION

[0036] The following describes exemplary embodiments of the present application in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0037] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0038] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0039] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0040] 1 to 6 , an embodiment of the present application provides an air conditioner 100 , which may be an air conditioner, a heat pump, a multi-split system, or other equipment for cooling or heating.

[0041] Specifically, the air conditioner 100 includes a housing and a heat exchanger 20 disposed within the housing. The housing defines an installation cavity within the housing; the heat exchanger 20 is disposed within the installation cavity and extends along a first direction intersecting the horizontal direction, with a return air duct 16 and an outlet air duct 17 defined between the heat exchanger 20 and the housing, respectively. The housing is provided with a first return air port 111 and at least one second return air port 141, respectively disposed on different sides of the housing; and the return air duct 16 selectively communicates with at least one of the first return air port 111 and the second return air port 141.

[0042] According to the air conditioner 100 provided in the present application, the heat exchanger 20 cooperates with the casing to form a return air duct 16 and an outlet air duct 17 within the casing. A first return air port 111 and at least one second return air port 141 are provided on different sides of the casing, and at least one of the first return air port 111 and the second return air port 141 can supply air into the return air duct 16. The airflow enters the return air duct 16, undergoes heat exchange with the heat exchanger 20, and then flows toward the outlet air duct 17, and then flows out from the outlet air duct 17. Since the heat exchanger 20 extends along a first direction intersecting the horizontal plane, a return air surface is formed on the side of the heat exchanger 20 facing the return air duct 16. For example, the heat exchanger 20 can be tilted relative to the horizontal plane within the casing. In this case, the heat exchanger 20 occupies less space within the casing, and the area of ​​the return air surface of the heat exchanger 20 is relatively large, thereby increasing the heat exchange efficiency of the heat exchanger 20 and helping to improve the cooling or heating efficiency of the air conditioner 100. Specifically, when installing the air conditioner 100, the return air duct 16 can be selectively connected to at least one of the first return air outlet 111 and the second return air outlet 141 according to the installation and use scenario of the air conditioner 100. For example, when the first return air outlet 111 needs to be blocked when the air conditioner 100 is installed, the second return air outlet 141 can be leaked to connect the return air duct 16 to the second return air outlet 141; when the second return air outlet 141 needs to be blocked when the air conditioner 100 is installed, the first return air outlet 111 can be leaked to connect the return air duct 16 to the second return air outlet 141. The return air duct 16 is connected to the first return air outlet 111; when the air conditioner 100 is installed, there is no need to block the first return air outlet 111 and the second return air outlet 141, so the return air duct 16 can be connected to the first return air outlet 111 and the second return air outlet 141. At this time, since the first return air outlet 111 and the second return air outlet 141 can both take air into the return air duct 16, multi-directional return air can be achieved, which helps to increase the return air volume of the return air duct 16, and further helps to further improve the heat exchange efficiency of the heat exchanger 20.

[0043] Please refer to Figures 1 to 6. According to some embodiments of the present application, the casing includes: a base plate; a side panel assembly, which is arranged around the peripheral side of the base plate and defines an installation cavity between the side panel assembly and the base plate; a top panel 15, which is arranged on the side of the side panel assembly away from the base plate; wherein the top panel 15 is provided with an air outlet 151 connected to the air outlet duct 17, and the side panel assembly is provided with a first return air outlet 111 and a second return air outlet 141.

[0044] In this embodiment, the housing is exemplarily in the shape of a rectangular parallelepiped. The side panel assembly is arranged around the periphery of the bottom plate and has an opening formed on a side away from the bottom plate. The top plate 15 covers the opening and is fixedly connected to the side panel assembly.

[0045] Specifically, the first return air port 111 and at least one second return air port 141 are opened on the side of the side panel assembly away from the top panel 15 to facilitate air to enter the return air duct 16 from the bottom of the side panel assembly to exchange heat with the heat exchanger 20.

[0046] According to the principle that hot air rises and cold air falls, an air outlet 151 connected to the air outlet duct 17 is provided on the top plate 15, so that the air in the return air duct 16 can flow to the air outlet duct 17 after heat exchange with the heat exchanger 20 and be discharged through the air outlet 151.

[0047] According to some embodiments of the present application, the side panel assembly includes a first side panel 11, a second side panel 12, a third side panel 13 and a fourth side panel 14 connected end to end, the first side panel 11 and the third side panel 13 are symmetrically arranged on both sides of the width direction of the base plate, and the second side panel 12 and the fourth side panel 14 are symmetrically arranged on both sides of the length direction of the base plate; wherein, the first side panel 11 is provided with a first return air outlet 111, and at least one of the second side panel 12, the third side panel 13 and the fourth side panel 14 is provided with a second return air outlet 141.

[0048] In this embodiment, illustratively, the first side panel 11 and the third side panel 13 are large surfaces of the side panel assembly, and both have larger areas than the second side panel 12 and the fourth side panel 14 .

[0049] The area of ​​the first return air vent 111 defined by the first side panel 11 is larger than the area of ​​the second return air vent 141. This facilitates a greater amount of air entering the return air duct 16 from the first return air vent 111 when the return air duct 16 selectively communicates with the first return air vent 111, thereby helping to improve the heat exchange efficiency of the heat exchanger 20. If the first return air vent 111 cannot communicate with the return air duct 16 due to the installation scenario of the air conditioner 100, the return air duct 16 can alternatively communicate with the second return air vent 141 defined by at least one of the second side panel 12 and the fourth side panel 14, thereby supplying air to the return air duct 16. This structure and principle are relatively simple and easy to implement.

[0050] Referring to Figures 1 and 2, according to some embodiments of the present application, the air conditioner 100 further includes a filter assembly 30, which is disposed below the heat exchanger 20 and corresponds to the position of the first return air outlet 111.

[0051] In this embodiment, illustratively, the filter assembly 30 includes a filter and a mounting bracket, and the mounting bracket is used to fix the filter.

[0052] By setting a filter assembly 30 corresponding to the position of the first return air outlet 111 below the heat exchanger 20, the filter of the filter assembly 30 can effectively filter the dust in the air and purify the air, thereby improving the cleanliness of the air entering the user's use space through the air conditioner 100, which helps to improve the user's experience.

[0053] 1 and 2 , according to some embodiments of the present application, the filter assembly 30 extends along a second direction intersecting the horizontal direction, and the bottom of the filter assembly 30 abuts against the bottom plate, and the second direction is parallel to or intersecting with the first direction.

[0054] In this embodiment, the filter assembly 30 is arranged on the bottom plate at an angle relative to the horizontal plane and corresponds to the position of the first air inlet, thereby helping to reduce wind resistance and improve the efficiency of air entering the return air duct 16.

[0055] In some embodiments, the filter of the filter assembly 30 has a plurality of folds extending from the bottom to the top of the filter, and the expanded area of ​​the filter is not less than the area of ​​the return air surface of the heat exchanger 20 .

[0056] By providing a plurality of folds on the filter, the air flow can flow along the extension direction of the folds to further reduce wind resistance, thereby further improving the air intake efficiency of the return air duct 16.

[0057] According to some embodiments of the present application, the height of the first return air outlet 111 along the vertical direction is not less than the distance between the top of the filter assembly 30 and the third side panel 13 .

[0058] In this embodiment, the gap between the top of the filter assembly 30 and the third side panel 13 forms an air duct path for the air supply to flow to the return air duct 16. The minimum width of the air duct path is the distance between the top of the filter assembly 30 and the third side panel 13. By setting the opening height of the first return air port 111 to be not less than the minimum width of the air duct path, the air intake volume from the first air inlet can meet the continuous flow of the air flow along the air duct path, thereby realizing continuous heat exchange between the air flow and the heat exchanger 20, thereby improving the heat exchange efficiency of the heat exchanger 20.

[0059] According to some embodiments of the present application, the second side panel 12 and / or the fourth side panel 14 is provided with a second return air outlet 141 , and the second return air outlet 141 corresponds to the position of the filter assembly 30 .

[0060] In this embodiment, by opening a second return air outlet 141 on the second side panel 12 or the fourth side panel 14, or opening a second return air outlet 141 on both the second side panel 12 and the fourth side panel 14, not only can the return air area be increased, but the air conditioner 100 can also be installed more flexibly according to the installation scenario, thereby being adaptable to different installation scenarios.

[0061] Please refer to Figures 4 and 6. According to some embodiments of the present application, the third side plate 13 is provided with a second return air port 141, and the second return air port 141 corresponds to the position of the heat exchanger 20.

[0062] In this embodiment, the third side panel 13 may also have a second return air port 141 to further increase the return air area. Since the area of ​​the third side panel 13 is relatively large, the second return air port 141 provided on the third side panel 13 may be aligned with the position of the heat exchanger 20, so that the airflow can flow directly from the second return air port 141 on the third side panel 13 to the return air duct 16 for heat exchange with the heat exchanger 20.

[0063] According to some embodiments of the present application, the angle between the first direction and the horizontal direction is α, and 45°≤α≤90°.

[0064] In this embodiment, the angle between the extension direction of the heat exchanger 20 and the horizontal plane is set in the range of 45° to 90°. For example, the angle between the heat exchanger 20 and the horizontal plane is set to 45°. In this case, the heat exchanger 20 occupies a smaller height space inside the casing, and the area of ​​the return air surface of the heat exchanger 20 is relatively large, so that the airflow in the return air duct 16 and the heat exchanger 20 can quickly exchange heat, thereby increasing the heat exchange efficiency of the heat exchanger 20 and improving the cooling or heating efficiency of the air conditioner 100.

[0065] According to some embodiments of the present application, the opening size of the first return air port 111 is equal to the opening size of the air outlet 151 .

[0066] In this embodiment, by setting the opening size of the first return air port 111 to be the same as the opening size of the air outlet 151, the production of the air port can be facilitated, thereby improving the manufacturing efficiency of the product and reducing the production cost.

[0067] According to some embodiments of the present application, the first return air outlet 111 and / or the second return air outlet 141 is provided with a return air grille; and the air outlet 151 is provided with an outlet grille.

[0068] In this embodiment, the first return air inlet 111 or the second return air inlet 141 is provided with a return air grille, or the first return air inlet 111 and the second return air inlet 141 are both provided with a return air grille. The return air grille can block external foreign matter from entering the interior of the casing from the first return air inlet 111 or the second return air inlet 141, which helps to improve the safety of the use of equipment such as the heat exchanger 20 inside the casing and improve the stability of the operation of the air conditioner 100.

[0069] Similarly, by setting a return air grille at the air outlet 151, the return air grille can prevent external foreign matter from entering the interior of the casing through the return air inlet, which helps to improve the safety of the use of equipment such as the heat exchanger 20 inside the casing and improve the stability of the operation of the air conditioner 100.

[0070] Please refer to Figures 2 and 3. According to some embodiments of the present application, the air conditioner 100 also includes a water receiving box assembly 40. The water receiving box assembly 40 is arranged below the heat exchanger 20, and the top of the filter assembly 30 is connected to the water receiving box assembly 40.

[0071] In this embodiment, a water receiving box assembly 40 is provided below the heat exchanger 20. The water receiving box assembly 40 has a receiving groove, which is used to receive the condensed water generated by the heat exchanger 20 and can be discharged to the outside of the casing through a pipeline, so as to reduce the condensed water generated by the heat exchanger 20 from being deposited in the casing and affecting the safety of the operation of the air conditioner 100, thereby improving the stability of the operation of the air conditioner 100.

[0072] Please refer to Figures 2 and 3. According to some embodiments of the present application, the air conditioner 100 also includes an exhaust device, which is arranged in the air outlet duct 17 and is connected to the air outlet duct 17 and the air outlet 151, and is used to discharge the air flow in the air outlet duct 17 from the air outlet 151.

[0073] In this embodiment, illustratively, the exhaust device is an exhaust fan arranged at the top of the air outlet duct 17 , and the exhaust fan has an exhaust duct, one end of the exhaust duct is connected to the air outlet duct 17 , and the other end is connected to the air outlet 151 .

[0074] By setting an exhaust device connected to the outlet duct 17 in the outlet duct 17, after the air in the return air duct 16 undergoes heat exchange with the heat exchanger 20, the exhaust device can quickly discharge the heat-exchanged air from the outlet duct 17 to the outside of the casing when it is in operation. At the same time, air can be drawn from the outside of the casing into the return air duct 16 through the first return air port 111 or the second return air port 141, thereby cyclically exchanging heat with the heat exchanger 20.

[0075] According to some embodiments of the present application, an air conditioner 100 is provided, comprising a housing, a heat exchanger 20, an exhaust device, a water collection box assembly 40, and a filter assembly 30. The heat exchanger 20 is disposed within the housing and extends in a direction inclined relative to a horizontal plane. A return air duct 16 and an outlet air duct 17 are defined between the heat exchanger 20 and the housing. The outlet air duct 17 is located on the upper side of the heat exchanger 20 and communicates with one end of the exhaust device. The housing includes a bottom plate, a side panel assembly surrounding the bottom plate, and a top plate 15 located on the side of the side panel assembly away from the bottom plate. The side panel assembly includes a first side panel 11, a second side panel 12, a third side panel 13, and a fourth side panel 14 connected end to end. The first side panel 11 and the third side panel 13 are arranged opposite each other, and the second side panel 12 and the fourth side panel 14 are arranged opposite each other. The bottom of the first side panel 11 is provided with a first return air port 111, and the bottoms of the second side panels 12, 13, and 14 are all provided with a second return air port 141. The top plate 15 is provided with an air outlet 151, which is connected to the other end of the exhaust device. The return air duct 16 can selectively connect to the first return air port 111 or the second return air port 141. A water receiving tray assembly is located at the bottom of the heat exchanger 20. The filter assembly 30 is located corresponding to the first return air port 111 and is inclined relative to the horizontal plane. Through the technical solution of the present application, the air conditioner 100 can be adapted to different application scenarios during installation, and the heat exchange efficiency of the heat exchanger 20 in the air conditioner 100 can be improved to improve the cooling or heating effect of the air conditioner 100.

[0076] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An air conditioner comprising: a housing, wherein a mounting cavity is defined in the interior of the housing; a heat exchanger disposed in the mounting cavity and extending along a first direction intersecting the horizontal direction, with a return air duct and an outlet air duct respectively defined between the heat exchanger and the casing; In which, the casing is provided with a first return air inlet and at least one second return air inlet, the first return air inlet and the second return air inlet are respectively arranged on different sides of the casing, and the return air duct is selectively connected to at least one of the first return air inlet and the second return air inlet.

2. The air conditioner according to claim 1, wherein The housing comprises: base plate; a side plate assembly, arranged around the periphery of the bottom plate and defining the installation cavity between the side plate assembly and the bottom plate; A top plate, provided on a side of the side plate assembly away from the bottom plate; Wherein, the top plate is provided with an air outlet connected to the air outlet duct, and the side panel assembly is provided with the first return air outlet and the second return air outlet.

3. The air conditioner according to claim 2, wherein: The side panel assembly includes a first side panel, a second side panel, a third side panel, and a fourth side panel connected end to end, wherein the first side panel and the third side panel are symmetrically arranged on both sides of the width direction of the bottom panel, and the second side panel and the fourth side panel are symmetrically arranged on both sides of the length direction of the bottom panel; The first side panel is provided with the first return air outlet, and at least one of the second side panel, the third side panel and the fourth side panel is provided with the second return air outlet.

4. The air conditioner according to claim 3, wherein: The air conditioner further includes a filter assembly, which is arranged below the heat exchanger and corresponds to the position of the first return air outlet.

5. The air conditioner according to claim 4, wherein: The filter assembly extends along a second direction intersecting the horizontal direction, and the bottom of the filter assembly abuts against the bottom plate. The second direction is parallel to or intersecting with the first direction.

6. The air conditioner according to claim 4 or 5, wherein: The height of the first return air outlet along the vertical direction is not less than the distance between the top of the filter assembly and the third side plate.

7. The air conditioner according to any one of claims 4 to 6, wherein: The second side panel and / or the fourth side panel is provided with the second return air outlet, and the second return air outlet corresponds to the position of the filter assembly; Alternatively, the third side plate is provided with the second return air outlet, and the second return air outlet corresponds to the position of the heat exchanger.

8. The air conditioner according to any one of claims 1 to 7, wherein: The angle between the first direction and the horizontal direction is α, 45°≤α≤90°.

9. The air conditioner according to any one of claims 2 to 8, wherein: The opening size of the first return air vent is equal to the opening size of the air outlet.

10. The air conditioner according to any one of claims 2 to 9, wherein: The first return air outlet and / or the second return air outlet is provided with a return air grille; And / or, the air outlet is provided with an air outlet grille.

11. The air conditioner according to any one of claims 4 to 10, wherein: The air conditioner further comprises a water receiving box assembly, which is arranged below the heat exchanger, and the top of the filter assembly is connected to the water receiving box assembly.

12. The air conditioner according to any one of claims 2 to 11, wherein: The air conditioner further includes an exhaust device, which is arranged in the air outlet duct and is connected to the air outlet duct and the air outlet, and is used to discharge the air flow in the air outlet duct from the air outlet.

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