Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit, and belongs to the technical field of air conditioners. The indoor unit of the air conditioner comprises a shell, an air inlet, an air outlet, an air inlet, an air outlet, an air inlet and an air outlet, the fan is arranged in the shell corresponding to the return air inlet; the heat exchanger is in a ring shape, the fan is contained in the inner ring space of the heat exchanger, an air outlet cavity is defined between the outer ring of the heat exchanger and the side wall of the shell, and the air outlet cavity communicates with the air outlet; the water pan is used for collecting condensate water on the heat exchanger; the first drainage pump and the second drainage pump are connected in the air outlet cavity, located above the water pan and used for draining condensate water; the first drainage pump and the second drainage pump are located on the two opposite sides of the same air outlet on the projection of the inner bottom wall of the water pan; or, the first drainage pump is located between the two adjacent air outlets, and the second drainage pump is located between the other two adjacent air outlets. The indoor unit of the air conditioner can solve the drainage problem in a shaking and inclined installation scene.

Description

Technical Field

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

[0002] An air conditioner is a device used to regulate the temperature, humidity, cleanliness, or air flow of indoor air. An air conditioner can be a separate device with an indoor unit and an outdoor unit.

[0003] When the heat exchanger in the air conditioner's indoor unit exchanges heat with the air, condensation forms on the heat exchanger's surface and flows down into the drain pan below the heat exchanger. To drain this condensation out promptly, a drain pump is typically used to pump it out of the drain pan.

[0004] Air conditioner indoor units are typically installed in stationary buildings, where drain pumps can properly drain condensed water. However, when installed in locations like airport corridors or moving vehicles, where the installation is subject to sway or tilt, the drain pan often tilts, placing the drain pump at a higher point and preventing the condensed water from reaching the lower point. This poor drainage can lead to leaks and water accumulation. Utility Model Content

[0005] The present application provides an air-conditioning indoor unit that can solve the drainage problem in shaking or tilted installation scenarios.

[0006] In one aspect of the present application, an air conditioner indoor unit comprises: a shell, a return air inlet is provided at the center of the bottom surface of the shell, and air outlets are provided around the return air inlet; a fan is provided in the shell corresponding to the return air inlet; a heat exchanger is ring-shaped, the inner ring space of the heat exchanger accommodates the fan, an air outlet cavity is formed between the outer ring of the heat exchanger and the side wall of the shell, the air inlet cavity is connected to the return air inlet, and the air outlet cavity is connected to the air outlet; a water receiving tray for collecting condensed water on the heat exchanger; and a drainage pump.

[0007] The water receiving tray includes: a water receiving trough forming portion, on which a water receiving trough is formed; an air outlet path forming portion, connected to the periphery of the water receiving trough forming portion, on which an air outlet path is formed, for guiding the air in the air outlet cavity to the air outlet; a water collecting trough forming portion;

[0008] The water collecting trough forming portion includes: a first water collecting trough forming portion connected between two adjacent air outlet path forming portions, on which a first water collecting trough communicating with a water receiving trough is formed; a second water collecting trough forming portion, which and the first water collecting trough forming portion are located on opposite sides of the same air outlet path forming portion, or the second water collecting trough forming portion is located between two other adjacent air outlet path forming portions; the second water collecting trough forming portion is formed with a second water collecting trough communicating with a water receiving trough;

[0009] The drainage pump includes: a first drainage pump connected to the first water collection tank forming portion, used to discharge the condensed water flowing from the water receiving tank to the first water collection tank; a second drainage pump connected to the second water collection tank forming portion, used to discharge the condensed water flowing from the water receiving tank to the second water collection tank.

[0010] In this technical solution, a drainage pump is respectively provided on the two opposite sides of the same air outlet path on the water receiving tray (i.e., the two adjacent corners of the water receiving tray), or a drainage pump is provided at each diagonal corner of the water receiving tray. When the indoor unit of the air conditioner is tilted or shaken, there is always a drainage pump that can pump out the condensed water, thereby solving the problems of water accumulation and leakage caused by untimely discharge of condensed water in shaking or tilted installation scenarios.

[0011] Since the drain pump is arranged in the air outlet cavity and located at the corner of the water receiving tray, there is no need to excessively change the structure and position of the heat exchanger to accommodate the drain pump, and the impact on the heat exchanger is minimal.

[0012] In some embodiments, the housing includes: an outer plate; an insulation layer connected to the inner side of the outer plate; the air conditioner indoor unit further includes: a bracket, which passes through the insulation layer and is connected to the outer plate;

[0013] The first drainage pump and / or the second drainage pump are connected to the bracket.

[0014] In this technical solution, the drain pump is connected to the shell through a bracket, wherein the bracket is connected to the outer plate of the shell, which can avoid the problem of high cost caused by changing the structure of the insulation layer when connecting the drain pump to the insulation layer.

[0015] In some embodiments, the bracket includes: a first connection portion connected to the drainage pump; two second connection portions formed by extending upward from opposite ends of the first connection portion, and the second connection portions are connected to the top plate of the outer plate.

[0016] In this technical solution, the bracket is configured as a U-shaped structure, and the drainage pump is hoisted on the bracket, which can ensure the connection stability of the drainage pump.

[0017] In some embodiments, the brackets are connected to the side panels of the outer panel.

[0018] In some embodiments, the shell includes: an outer plate; an insulation layer connected to the inner side of the outer plate, and a convex portion is provided on the inner wall of the insulation layer; the first drainage pump and / or the second drainage pump are connected to the convex portion.

[0019] In this technical solution, the drainage pump is connected to the adjacent insulation layer, and the insulation layer can isolate vibration, thereby avoiding the transmission of vibration from the drainage pump to the outer plate when the drainage pump is connected to the outer plate.

[0020] In some embodiments, the heat exchanger includes: a first heat exchange section, having four first heat exchange sections, the first heat exchange section being located on one side of the air outlet path forming portion close to the center of the water receiving tray; a second heat exchange section extending in a straight line, the second heat exchange section being connected between two adjacent first heat exchange sections; and a drainage pump being located between the second heat exchange section and the inner wall of the shell.

[0021] In this technical solution, the second heat exchange section extends in a straight line, which can provide more installation space for the drainage pump compared to an arc shape.

[0022] In some embodiments, it also includes: a first drain nozzle connected to the side wall of the shell, the first drain nozzle is connected to the drain outlet of the first drain pump; a second drain nozzle connected to the side wall of the shell, the second drain nozzle is connected to the drain outlet of the second drain pump.

[0023] In some embodiments, the first drain nozzle has a first port, a second port and a third port; the first port is connected to the first drain pump, the second port is connected to the second drain nozzle through a water pipe, and the third port is used to connect to the drain pipe.

[0024] In this technical solution, the first drain nozzle and the second drain nozzle are connected to a drain pipe, which can reduce the length of the drain pipe in use and only need to consider the routing of one drain pipe at the installation site, thereby improving operational convenience.

[0025] On the other hand, the present application provides an air-conditioning indoor unit, comprising: a shell, a return air inlet is provided in the center of the bottom surface of which, and an air outlet is provided around the return air inlet; a fan is provided in the shell corresponding to the return air inlet; a heat exchanger is ring-shaped, the inner ring space of the heat exchanger accommodates the fan, and an air outlet cavity is formed between the outer ring of the heat exchanger and the side wall of the shell, the air inlet cavity is connected to the return air inlet, and the air outlet cavity is connected to the air outlet; a water receiving tray is used to collect condensed water on the heat exchanger; a first drain pump and a second drain pump are connected in the air outlet cavity and located above the water receiving tray, and are used to drain the condensed water; the first drain pump and the second drain pump are located on opposite sides of the same air outlet on the projection of the inner bottom wall of the water receiving tray; or, the first drain pump is located between two adjacent air outlets, and the second drain pump is located between the other two adjacent air outlets.

[0026] In this technical solution, a drainage pump is respectively provided at two adjacent corners of the water receiving tray, or a drainage pump is provided at each diagonal corner of the water receiving tray. When the indoor unit of the air conditioner is tilted or shaken, there is always a drainage pump that can pump out the condensed water, thereby solving the problems of water accumulation and leakage caused by untimely discharge of condensed water in shaking or tilted installation scenarios.

[0027] In some embodiments, the first drain pump and the second drain pump operate simultaneously.

[0028] In this technical solution, the two drainage pumps working simultaneously can simplify the control logic and ensure the reliability of the drainage work. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 shows an appearance diagram of an air conditioner indoor unit according to some embodiments;

[0030] Figure 2 shows a bottom view of an air conditioner indoor unit according to some embodiments;

[0031] Figure 3 shows a cross-sectional view of an air conditioner indoor unit according to some embodiments;

[0032] Figure 4 A perspective view of a heat exchanger, a water tray, and a panel of an air conditioner indoor unit according to some embodiments is shown;

[0033] Figure 5 A schematic diagram of a water receiving tray of an air conditioner indoor unit in an application scenario according to some embodiments is shown;

[0034] Figure 6 A schematic diagram of a water receiving tray of an air conditioner indoor unit in another application scenario according to some embodiments is shown;

[0035] Figure 7 A perspective view of a water receiving tray of an air conditioner indoor unit according to some embodiments is shown;

[0036] Figure 8 A perspective view showing a drain pump and an insulation layer of an air conditioner indoor unit according to some embodiments;

[0037] Figure 9 shows a perspective view of a drain pump and a top plate of an air conditioner indoor unit according to some embodiments;

[0038] Figure 10 A schematic diagram illustrating a drain pump and a drain pipe of an air conditioner indoor unit according to some embodiments is shown;

[0039] Figure 11 Schematic diagrams showing a drain pump and a drain pipe of an air conditioner indoor unit according to other embodiments;

[0040] In the above figures, 10, housing; 11, upper housing assembly; 111, outer plate; 112, side plate; 113, top plate; 114, insulation layer; 1141, convex portion; 12, panel; 121, return air port; 122, air outlet; 131, air inlet cavity; 132, air outlet cavity; 20, fan; 30, heat exchanger; 31, first heat exchange section; 32, second heat exchange section; 40, water receiving tray; 41, water receiving trough forming portion; 41a, water receiving trough; 42, air outlet path forming portion; 42a, air outlet path; 421, First air outlet path forming part; 422, second air outlet path forming part; 423, third air outlet path forming part; 424, fourth air outlet path forming part; 43, water collecting trough forming part; 43a, water collecting trough; 431, first water collecting trough forming part; 432, second water collecting trough forming part; 50, drain pump; 51, first drain pump; 52, second drain pump; 60, bracket; 61, first connecting part; 62, second connecting part; 71, first drain nozzle; 72, second drain nozzle; 80, drain pipe; 90, water pipe. DETAILED DESCRIPTION

[0041] In order to make the purpose and implementation of this application clearer, the exemplary implementation of this application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only part of the embodiments of this application, not all of the embodiments.

[0042] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] The air conditioner in this application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged.

[0046] The compressor compresses low-temperature, low-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0047] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser to a lower-pressure liquid. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves cooling by utilizing the latent heat of evaporation to exchange heat with the material being cooled. Throughout this cycle, the air conditioner regulates the temperature of the indoor space.

[0048] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0049] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0050] When the indoor unit and outdoor unit of the air conditioner are of a two-body structure, the indoor unit is also referred to as the air conditioner indoor unit, and the outdoor unit is also referred to as the air conditioner outdoor unit.

[0051] The indoor unit of the air conditioner can be installed in the indoor space and connected to the outdoor unit of the air conditioner installed in the outdoor space through a pipe.

[0052] Reference Figures 1 to 3 The air conditioner indoor unit according to the embodiment of the present application includes a housing 10. The housing 10 forms the general appearance of the air conditioner indoor unit.

[0053] The housing 10 may include an upper housing assembly 11. The upper housing assembly 11 is in a box shape with an open bottom.

[0054] The upper shell assembly 11 includes an outer plate 111 . The outer plate 111 has a circular side plate 112 and a top plate 113 connected to the top of the side plate 112 .

[0055] The upper shell assembly 11 includes a thermal insulation layer 114 , which is connected to the inner side of the outer plate 111 .

[0056] The housing 10 includes a panel 12 . The panel 12 is connected to the bottom end of the upper housing assembly 11 .

[0057] The panel 12 has a return air port 121 at its center. Four air outlets 122 are provided around the return air port 121. The four air outlets 122 are a first air outlet 122a, a second air outlet 122b, a third air outlet 122c, and a fourth air outlet 122d arranged in circumferential order.

[0058] Indoor air enters the housing 10 through the return air port 121 ; the air in the housing 10 is discharged into the indoor space through the air outlet 122 .

[0059] The air conditioner indoor unit may include a fan 20, which is disposed inside the housing 10 and configured to drive air flow so that air can flow from the return air port 121 to the air outlet 122. The fan 20 may be a backward centrifugal fan.

[0060] The axis of the backward centrifugal fan is parallel to the height direction of the air conditioner indoor unit, that is, the axis of the backward centrifugal fan is arranged vertically.

[0061] The air conditioner indoor unit may include a heat exchanger 30. The heat exchanger 30 is disposed inside the housing 10 and surrounds the outer periphery of the fan 20. The heat exchanger 30 is located on the air flow path from the return air port 121 to the air outlet 122. The heat exchanger 30 is used to absorb heat from the air introduced into the housing 10 or transfer heat to the air.

[0062] The heat exchanger 30 may be ring-shaped. The inner space enclosed by the heat exchanger 30 forms an air inlet chamber 131, and the space between the outer ring of the heat exchanger 30 and the housing 10 forms an air outlet chamber 132. The fan 20 is disposed in the air inlet chamber 131, and the air outlet chamber 132 is connected to the air outlet 122.

[0063] The fan 20 draws air in axially and then throws it out radially. The air then exchanges heat with the refrigerant in the heat exchanger 30 and is then blown into the room.

[0064] The air conditioner indoor unit may include a water receiving pan 40 , which is connected to the housing 10 and disposed below the heat exchanger 30 for collecting condensed water flowing down from the heat exchanger 30 .

[0065] Combine Figure 4 The indoor unit of the air conditioner may include a drainage pump 50. The drainage pump 50 is provided in the air outlet cavity 132 and is located above the water receiving tray 40 for pumping away the condensed water in the water receiving tray 40.

[0066] In some embodiments, the drain pump 50 may include a first drain pump 51 and a second drain pump 52. When projected on a transverse plane, the first drain pump 51 and the second drain pump 52 are located on opposite sides of the same air outlet 122.

[0067] The first drain pump 51 and the second drain pump 52 may be located on opposite sides of the first air outlet 122a; or, the first drain pump 51 and the second drain pump 52 may be located on opposite sides of the second air outlet 122b; or, the first drain pump 51 and the second drain pump 52 may be located on opposite sides of the third air outlet 122c; or, the first drain pump 51 and the second drain pump 52 may be located on opposite sides of the fourth air outlet 122d.

[0068] In some embodiments, projected on a transverse plane, the first drainage pump 51 is located between two adjacent air outlets 122 , and the second drainage pump 52 is located between another two adjacent air outlets 122 .

[0069] For example, the first drain pump 51 is located between the first air outlet 122a and the second air outlet 122b, and the second drain pump 52 is located between the third air outlet 122c and the fourth air outlet 122d. Alternatively, the first drain pump 51 is located between the second air outlet 122b and the third air outlet 122c, and the second drain pump 52 is located between the first air outlet 122a and the fourth air outlet 122d.

[0070] During the actual installation process, the two drainage pumps 50 are installed according to the application scenario and arranged in an inclined direction. For example, if the installation scenario requires left and right shaking, the two drainage pumps 50 are installed in the left and right directions corresponding to the air conditioner indoor unit.

[0071] In one example, the first drain pump 51 is located between the first air outlet 122a and the second air outlet 122b, and the second drain pump 52 is located between the second air outlet 122b and the third air outlet 122c. The first drain pump 51 is located on the left, and the second drain pump 52 is located on the right.

[0072] Reference Figure 5 When the air conditioner indoor unit tilts to the lower left, the left side of the water receiving pan 40 is at a low point, and the right side of the water receiving pan 40 is at a high point. At this time, the first drainage pump 51 on the left can completely pump out the condensed water; Figure 6When the air conditioner indoor unit tilts to the lower right, the right side of the water receiving pan 40 is at a low point and the left side of the water receiving pan 40 is at a high point. At this time, the second drainage pump 52 on the right side can completely pump out the condensed water.

[0073] In an embodiment of the present application, two drainage pumps 50 are provided. When the air-conditioning indoor unit is tilted, there is always one drainage pump 50 that can drain the condensed water, thereby avoiding the phenomenon of water accumulation and overflow caused by the inability to drain the condensed water in time when the air-conditioning indoor unit is tilted.

[0074] In addition, since the drain pump 50 is disposed in the air outlet cavity 132 and located at a corner of the water receiving tray 40 , there is no need to excessively change the structure and position of the heat exchanger 30 to accommodate the drain pump 50 , and the impact on the heat exchanger 30 is minimal.

[0075] In some embodiments, reference Figure 7 The water receiving tray 40 includes a water receiving groove forming portion 41, on which a water receiving groove 41a is formed.

[0076] The water receiving groove forming portion 41 is located below the heat exchanger 30 and on the inner periphery of the heat exchanger 30. The lower end of the heat exchanger 30 abuts against the water receiving groove forming portion 41.

[0077] The condensed water on the heat exchanger 30 flows downward into the water receiving tank 41 a.

[0078] The water receiving tray 40 includes an air outlet path forming portion 42, which is disposed corresponding to the air outlet 122. An air outlet path 42a is formed on the air outlet path forming portion 42, and air in the air outlet cavity 132 flows to the air outlet 122 through the air outlet path 42a.

[0079] The air outlet path forming portion 42 includes a first air outlet path forming portion 421 corresponding to the first air outlet 122a, a second air outlet path forming portion 422 corresponding to the second air outlet 122b, a third air outlet path forming portion 423 corresponding to the third air outlet 122c, and a fourth air outlet path forming portion 424 corresponding to the fourth air outlet 122d.

[0080] Four air outlet path forming portions 42 are provided around the water receiving groove forming portion 41 .

[0081] The water receiving tray 40 includes a water collecting groove forming portion 43. The water collecting groove forming portion 43 is connected between two adjacent air outlet path forming portions 42.

[0082] The water collecting groove forming portion 43 is provided with a water collecting groove 43a connected to the water receiving groove 41a. The water collecting groove 43a can be lower than the water receiving groove 41a along the axis of the fan 20, and the condensed water in the water receiving groove 41a will flow into the water collecting groove 43a.

[0083] The sump forming portion 43 includes a first sump forming portion 431. The sump 43a formed on the first sump forming portion 431 is a first sump.

[0084] The sump forming portion 43 includes a second sump forming portion 432. The sump 43a formed on the second sump forming portion 432 is a second sump.

[0085] In some embodiments, the first water collecting trough forming portion 431 and the second water collecting trough forming portion 432 are respectively located on two opposite sides of the same air outlet path forming portion 42 .

[0086] Exemplarily, the first sump forming portion 431 and the second sump forming portion 432 are respectively located on both sides of the second air outlet path forming portion 422. Specifically, the first sump forming portion 431 is connected between the first air outlet path forming portion 421 and the second air outlet path forming portion 422, and the second sump forming portion 432 is connected between the second air outlet path forming portion 422 and the third air outlet path forming portion 423.

[0087] In some embodiments, the first water collecting trough forming portion 431 is connected between two adjacent air outlet path forming portions 42 ; the second water collecting trough forming portion 432 is connected between another two adjacent air outlet path forming portions 42 .

[0088] Exemplarily, the first trough forming portion 431 is connected between the first outlet path forming portion 421 and the second outlet path forming portion 422 ; the second trough forming portion 432 is connected between the third outlet path forming portion 423 and the fourth outlet path forming portion 423 .

[0089] The first drain pump 51 is connected to the first water collecting tank forming portion 431 and is used to drain the condensed water flowing from the water receiving tank 41 a to the first water collecting tank.

[0090] The second drain pump 52 is connected to the second sump forming portion 432 and is used to drain the condensed water flowing from the sump 41 a to the second sump.

[0091] In an embodiment of the present application, when the air-conditioning indoor unit is tilted, if the first water collection tank is located at a low point, the first drainage pump 51 can pump out the condensed water; if the second water collection tank is located at a low point, the second drainage pump 52 can pump out the condensed water. Therefore, the present application can avoid the problem of poor drainage when the air-conditioning indoor unit is tilted.

[0092] In some embodiments, the first drain pump 51 and the second drain pump 52 can operate simultaneously. This simplifies the control logic. Regardless of whether the end where the first drain pump 51 is located is at a low point or the end where the second drain pump 52 is located is at a low point, the two drain pumps 50 can always operate to drain the condensed water.

[0093] In some embodiments, reference Figure 8 The inner wall of the housing 10 is provided with a convex portion 1141 protruding toward the air outlet cavity 132. The convex portion 1141 is located above the first drain pump 51. The top end of the first drain pump 51 is connected to the convex portion 1141.

[0094] According to an embodiment of the present application, the insulation layer 114 is provided with a protrusion 1141 corresponding to the upper side of the first drainage pump 51, and a fixing plate is embedded in the lower end of the protrusion 1141. The top of the first drainage pump 51 is connected to the fixing plate by a fastener such as a screw.

[0095] In some embodiments, a protrusion 1141 is provided on the inner wall of the shell 10 at a position corresponding to the upper side of the second drainage pump 52, and a fixing plate is embedded in the lower end of the protrusion 1141. The top of the second drainage pump 52 is connected to the fixing plate by fasteners such as screws.

[0096] In some embodiments, reference Figure 9 The first drain pump 51 and the second drain pump 52 are respectively connected to the housing 10 via a bracket 60. The top of the bracket 60 is connected to the top wall of the housing 10. The first drain pump 51 is connected to one bracket 60, and the second drain pump 52 is connected to the other bracket 60.

[0097] According to an embodiment of the present application, the top end of the bracket 60 passes through the insulation layer 114 and is connected to the outer plate 111 by a fastener such as a screw.

[0098] Since the insulation layer 114 is usually a foam part, it is not easy to set a connecting structure on it after molding. Therefore, in this embodiment, screw mounting holes can be set on the outer plate 111 of the metal sheet, and then the bracket 60 can be connected to the screw mounting holes on the outer plate 111.

[0099] Compared with the need to change the structure of the insulation layer 114 and embed a fixing plate on the insulation layer 114, this embodiment connects the drainage pump 50 to the shell 10 through the bracket 60. There is no need to change the structure of the existing insulation layer 114. It is only necessary to cut a hole in the insulation layer 114 to avoid the bracket 60, which greatly simplifies the product structure and saves costs.

[0100] In some embodiments, the first drain pump 51 is connected to the protrusion 1141 on the housing 10 , and the second drain pump 52 is connected to the top wall of the housing 10 via the bracket 60 .

[0101] The insulation layer 114 of the existing air conditioner indoor unit is usually provided with a protrusion 1141, and the first drain pump 51 can be fixed to the protrusion 1141 in a conventional manner. Only the second drain pump 52 is connected to the housing 10 using the bracket 60.

[0102] It is understandable that the positions of the first drain pump 51 and the second drain pump 52 are interchangeable. The second drain pump 52 is connected to the protrusion 1141 on the housing 10 , and the first drain pump 51 is connected to the top wall of the housing 10 via the bracket 60 .

[0103] In some embodiments, continue to refer to Figure 9 The bracket 60 is generally U-shaped and includes a first connecting portion 61. The first connecting portion 61 is generally arranged in a transverse direction, and the drainage pump 50 is connected to the first connecting portion 61.

[0104] The bracket 60 includes two second connection parts 62 . The two second connection parts 62 are respectively formed by extending upward from opposite ends of the first connection part 61 .

[0105] The bottom end of the second connecting portion 62 is connected to the first connecting portion 61 , and the top end of the second connecting portion 62 is connected to the housing 10 .

[0106] The top edge of the second connection portion 62 has a flange, which abuts against the outer plate 111 .

[0107] The bracket 60 can be a sheet metal part, the second connection part 62 can be formed by bending the two ends of the first connection part 61 upward, and the flange can be formed by bending the top edge of the second connection part 62. The processing and manufacturing is relatively simple and the cost is low.

[0108] In some embodiments, the bracket 60 may also pass through the insulation layer 114 and be connected to the side plate 112 of the outer plate 111 .

[0109] The bracket 60 is in the shape of a horizontal plate, and a flange is provided on the edge of the bracket 60 near the side plate 112, and the flange is connected to the side plate 112 by screws. The drain pump 50 is connected to the lower side of the bracket 60.

[0110] In this embodiment, the distance between the drain pump 50 and the connection between the bracket 60 and the side plate 112 is relatively close, which can reduce the vibration of the bracket 60 caused by the operation of the drain pump 50.

[0111] In some embodiments, a protrusion 1141 is respectively provided on the inner wall of the housing 10 at positions corresponding to the first drain pump 51 and the second drain pump 52 .

[0112] The first drain pump 51 and the second drain pump 52 are connected to corresponding protrusions 1141 , respectively.

[0113] By connecting the drain pump 50 to the adjacent convex portion 1141 , the stability and firmness of the installation can be ensured, and the vibration transmission from the drain pump 50 to the outer plate 111 during operation can be reduced.

[0114] In some embodiments, reference Figure 4The heat exchanger 30 includes a first heat exchange section 31. The first heat exchange section 31 is located on one side of the air outlet path forming portion 42 close to the center of the water receiving tray 40.

[0115] The first heat exchange section 31 extends in a straight line, and its length direction is parallel to the length direction of the air outlet path forming portion 42 .

[0116] Corresponding to the four air outlet path forming portions 42 , there are four first heat exchange sections 31 .

[0117] The heat exchanger 30 includes a second heat exchange section 32 . The length direction of the second heat exchange section 32 extends along a straight line, and the second heat exchange section 32 connects two adjacent first heat exchange sections 31 .

[0118] The drainage pump 50 is disposed between the second heat exchange section 31 and the inner wall of the shell 10 .

[0119] In the present application, by arranging the second heat exchange section 32 to extend in a straight line, the four corners of the heat exchanger 30 are obliquely angled, which can reserve sufficient installation space for the drainage pump 50.

[0120] According to an embodiment of the present application, the second heat exchange section 32 is connected to the first heat exchange section 31 through a rounded corner, which facilitates bending the heat exchanger 30 into the shape shown in the figure.

[0121] In some embodiments, the upper shell assembly 11 includes a first side wall parallel to the first heat exchange section 31 , and a second side wall parallel to the second heat exchange section 32 .

[0122] The vertical outer side surface of the sump forming portion 431 abuts against the second side wall of the upper housing assembly 11 .

[0123] In some embodiments, reference Figure 1 and Figure 4 The air conditioner indoor unit includes a first drain nozzle 71. The first drain nozzle 71 is connected to the second side wall of the housing 10 corresponding to the first drain pump 51.

[0124] The water intake of the first drain pump 51 is spaced a certain distance from the inner bottom surface of the water receiving pan 40. The drain outlet of the first drain pump 51 is connected to a first drain nozzle 71 via a water pipe. The first drain nozzle 71 is connected to an external drain pipe 80. Condensate pumped by the first drain pump 51 flows through the first drain nozzle 71 to the drain pipe 80.

[0125] According to an embodiment of the present application, the first drain nozzle 71 is connected to the second side wall of the housing 10 by screws.

[0126] Reference Figure 10The first drain nozzle 71 has two ports, one port is penetrated through the second side wall of the shell 10 and extends into the shell 10 to connect to the water pipe of the first drain pump 51, and the other port is located outside the shell 10 for connecting to the external drain pipe 80.

[0127] In some embodiments, the air conditioner indoor unit includes a second drain nozzle 72 . The second drain nozzle 72 is connected to the second side wall of the housing 10 corresponding to the second drain pump 52 .

[0128] The water intake of the second drain pump 52 is spaced a certain distance from the inner bottom surface of the water receiving pan 40. The drain outlet of the second drain pump 52 is connected to a second drain nozzle 72 via a water pipe. The second drain nozzle 72 is connected to an external drain pipe 80. Condensate pumped by the second drain pump 52 flows through the second drain nozzle 72 to the drain pipe 80.

[0129] According to an embodiment of the present application, the second drain nozzle 72 is connected to the second side wall of the housing 10 by screws.

[0130] The second drain nozzle 72 has two ports, one port is penetrated through the second side wall of the shell 10 and extends into the shell 10 to connect to the water pipe of the second drain pump 52, and the other port is located outside the shell 10 for connecting to the external drain pipe 80.

[0131] In some embodiments, reference Figure 11 The first drain nozzle 71 has three ports, which are a first port, a second port and a third port.

[0132] The first port extends into the housing 10 and is connected to the first drainage pump 51 .

[0133] The second and third ports are located outside the housing 10. The second port is connected to the second drain nozzle 72 via a water pipe 90, and the third port is connected to an external drain pipe 80. This allows the first and second drain nozzles 71 and 72 to drain through a single drain pipe 80, eliminating the need for a separate drain pipe 80.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0135] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner indoor unit, characterized in that: include: The shell has an air return port at the center of its bottom surface, and air outlets are arranged around the air return port; a fan, arranged in the housing corresponding to the return air outlet; The heat exchanger is ring-shaped, the inner ring space of the heat exchanger accommodates the fan, the outer ring of the heat exchanger and the side wall of the shell form an air outlet cavity, and the air outlet cavity is connected to the air outlet; A water receiving tray, used to collect condensed water on the heat exchanger, the water receiving tray comprising: a water receiving trough forming portion, on which a water receiving trough is formed; an air outlet path forming portion connected to the periphery of the water receiving trough forming portion, wherein an air outlet path is formed on the air outlet path forming portion for guiding the air in the air outlet cavity to the air outlet; A water collecting trough forming portion, the water collecting trough forming portion comprising: a first water collecting trough forming portion connected between two adjacent air outlet path forming portions, and having a first water collecting trough formed thereon that is in communication with the water receiving trough; a second water collecting trough forming portion, which is located on opposite sides of the same air outlet path forming portion as the first water collecting trough forming portion, or the second water collecting trough forming portion is located between two other adjacent air outlet path forming portions; a second water collecting trough communicating with the water receiving trough is formed on the second water collecting trough forming portion; A drainage pump comprising: a first drainage pump connected to the first water collecting tank forming portion, for discharging condensed water flowing from the water receiving tank to the first water collecting tank; The second drainage pump is connected to the second water collecting tank forming portion and is used to discharge the condensed water flowing from the water receiving tank to the second water collecting tank.

2. The air conditioner indoor unit according to claim 1, characterized in that: The housing comprises: outer panels; an insulation layer connected to the inner side of the outer plate; The air conditioner indoor unit also includes: a bracket, passing through the thermal insulation layer and connected to the outer plate; The first drainage pump and / or the second drainage pump are connected to the bracket.

3. The air conditioner indoor unit according to claim 2, characterized in that: The bracket comprises: a first connecting portion connected to the drainage pump; Two second connection parts are formed by extending upward from two opposite ends of the first connection part, and the second connection parts are connected to the top plate of the outer plate.

4. The air conditioner indoor unit according to claim 2, characterized in that: The bracket is connected to the side plate of the outer plate.

5. The air conditioner indoor unit according to claim 1, characterized in that: The housing comprises: outer panels; A heat-insulating layer connected to the inner side of the outer plate, wherein a convex portion is provided on the inner wall of the heat-insulating layer; The first drain pump and / or the second drain pump are connected to the convex portion.

6. The air conditioner indoor unit according to claim 1, characterized in that: The heat exchanger comprises: There are four first heat exchange sections, each of which is located on one side of the air outlet path forming portion close to the center of the water receiving tray; a second heat exchange section extending in a straight line, wherein the second heat exchange section is connected between two adjacent first heat exchange sections; The drainage pump is located between the second heat exchange section and the inner wall of the shell.

7. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: a first drain nozzle connected to a side wall of the housing, the first drain nozzle being connected to a drain port of the first drain pump; The second drain nozzle is connected to the side wall of the shell, and the second drain nozzle is connected to the drain port of the second drain pump.

8. The air conditioner indoor unit according to claim 7, characterized in that: The first drain nozzle has a first port, a second port and a third port; The first port is connected to the first drainage pump, the second port is connected to the second drainage nozzle through a water pipe, and the third port is used to be connected to a drainage pipe.

9. An air conditioner indoor unit, characterized in that: include: The shell has an air return port at the center of its bottom surface, and an air outlet is provided around each of the four sides of the air return port; a fan, arranged in the housing corresponding to the return air outlet; The heat exchanger is ring-shaped, the inner ring space of the heat exchanger accommodates the fan, the outer ring of the heat exchanger and the side wall of the shell form an air outlet cavity, and the air outlet cavity is connected to the air outlet; A water receiving tray, used to collect condensed water on the heat exchanger; A first drain pump and a second drain pump are connected in the air outlet cavity and located above the water receiving tray, for draining condensed water; the first drain pump and the second drain pump are located on opposite sides of the same air outlet on the projection of the inner bottom wall of the water receiving tray; or, the first drain pump is located between two adjacent air outlets, and the second drain pump is located between the other two adjacent air outlets.

10. The air conditioner indoor unit according to claim 9, characterized in that: The first drainage pump and the second drainage pump operate simultaneously.

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