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 air conditioner indoor unit comprises a shell assembly provided with an air outlet, and the air outlet is defined to be located at the front end of the shell assembly; the heat exchanger is arranged in the shell assembly corresponding to the air outlet and used for exchanging heat with air passing through the heat exchanger, at least part of the heat exchanger obliquely extends in the direction away from the air outlet from top to bottom, the heat exchanger is provided with a first end plate and a second end plate which are located at the two ends of the heat exchanger, and the first end plate is provided with a first flanging part; the first cover plate is provided with a supporting part protruding towards the direction of the first end plate, and the supporting part abuts against the front side face of the first flanging part; the upper end of the first cover plate and the front end of the first cover plate abut against the shell assembly. The rear end of the second cover plate is connected with the second end plate, and the upper end of the second cover plate and the front end of the second cover plate abut against the shell assembly. The air conditioner indoor unit can improve the working efficiency.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an indoor unit of an air conditioner. Background Art

[0002] A heat exchanger is usually arranged in an indoor unit of an air conditioner to heat-exchange the indoor air. The end plate of the heat exchanger is a fixing component of the heat exchanger, which undertakes the role of fixing the heat exchanger and also plays a protective role for the heat exchanger during production and transportation.

[0003] Air leakage is likely to occur on both sides of the end plate of the heat exchanger, resulting in some air flowing directly to the air outlet without passing through the heat exchanger, which will reduce the working efficiency of the indoor unit of the air conditioner. Utility Model Content

[0004] This application provides an indoor unit of an air conditioner, which can reduce the air leakage on the side of the end plate of the heat exchanger and improve the working efficiency.

[0005] On one hand of this application, an air conditioner includes: a housing assembly, on which an air outlet is provided, and it is defined that the air outlet is located at the front end of the housing assembly; a heat exchanger, which is arranged in the housing assembly corresponding to the air outlet and is used for exchanging heat with the air passing through it. At least part of the heat exchanger extends obliquely downward and away from the air outlet from top to bottom. The heat exchanger has a first end plate and a second end plate at its two ends, and a first flanging portion is provided on the first end plate; a first cover plate, on which a supporting portion protruding towards the first end plate is provided, and the supporting portion abuts against the front side of the first flanging portion; the upper end and the front end of the first cover plate are respectively abutted against the housing assembly; a second cover plate, the rear end of which is connected to the second end plate, and the upper end and the front end of the second cover plate are respectively abutted against the housing assembly.

[0006] In this application, the first cover plate is connected to the left side of the first end plate, and the upper side and the front side of the first cover plate are respectively abutted against the housing assembly, so as to seal the left space of the first end plate and prevent air flow from flowing from the left space of the first end plate to the air outlet.

[0007] The second cover plate is connected to the front side of the second end plate, and the upper side and the front side of the second cover plate are respectively abutted against the housing assembly, so as to seal the right space of the second end plate and prevent air flow from flowing from the right space of the second end plate to the air outlet.

[0008] Due to the blocking effect of the first cover plate and the second cover plate, the air flow can flow from the heat exchanger to the air outlet to the greatest extent, ensuring the heat exchange efficiency of the heat exchanger and improving the working efficiency of the indoor unit of the air conditioner.

[0009] Since the heat exchanger is inclined, setting the supporting portion on the front side of the first flanging portion can make the supporting portion play a supporting role for the heat exchanger and ensure the position of the heat exchanger in the indoor unit.

[0010] The supporting part on the first cover plate abuts against the first flanging part on the first end plate, and can also form a contact seal between the first cover plate and the first end plate, reducing air leakage.

[0011] On the other hand, an air conditioner according to the present application includes: a housing assembly provided with an air outlet, defining that the air outlet is located at the front end of the housing assembly; a heat exchanger correspondingly disposed in the housing assembly for exchanging heat with the air passing through it, at least part of the heat exchanger extends obliquely downward and away from the air outlet, the heat exchanger has a first end plate and a second end plate at both ends thereof, and the first end plate is provided with a first flanging part; a first cover plate provided with a supporting part and a limiting part protruding towards the first end plate, a space between the limiting part and the supporting part forms a plugging part for the first flanging part to be plugged; the upper end and the front end of the first cover plate are respectively in contact with the housing assembly; a second cover plate, the rear end of which is connected to the second end plate, and the upper end and the front end of the second cover plate are respectively in contact with the housing assembly.

[0012] In the present application, the first cover plate is connected to the left side of the first end plate, and the upper side and the front side of the first cover plate are respectively in contact with the housing assembly, which can enclose the left space of the first end plate and prevent air flow from flowing from the left space of the first end plate to the air outlet.

[0013] The second cover plate is connected to the front side of the second end plate, and the upper side and the front side of the second cover plate are respectively in contact with the housing assembly, which can enclose the right space of the second end plate and prevent air flow from flowing from the right space of the second end plate to the air outlet.

[0014] Due to the blocking effect of the first cover plate and the second cover plate, the air flow can flow from the heat exchanger to the air outlet to the greatest extent, ensuring the heat exchange efficiency of the heat exchanger and improving the working efficiency of the indoor unit of the air conditioner.

[0015] The first flanging part is plugged into the plugging part, and the supporting part and the limiting part of the plugging part play a role in limiting the heat exchanger, which can ensure the position of the heat exchanger in the indoor unit.

[0016] In some embodiments, the part of the heat exchanger that extends obliquely downward and away from the air outlet is the inclined section part; the heat exchanger further includes a straight section part connected to the upper end of the inclined section part, and the straight section part extends vertically in the height direction; the straight section part is plugged into the plugging part.

[0017] In the present application, the straight section part is plugged into the plugging part, so that there are planes in the contact areas between the limiting part and the supporting part and the first flanging part respectively. The planes are relatively easy to achieve complete fitting, ensuring the contact area, and thus improving the effect of contact seal.

[0018] In some embodiments, the supporting part abuts against at least the upper middle part of the first flanging part.

[0019] In the present application, the support portion abuts at least against the upper middle part of the first flanging portion, which can make the contact area between the support portion and the first flanging portion relatively large. A large contact area can improve the supporting effect of the support portion on the heat exchanger, and a large contact area also results in a better contact sealing effect.

[0020] In some embodiments, it further includes: a water receiving tray disposed below the heat exchanger, and a recessed portion is provided on the side wall of the water receiving tray; the first cover plate includes: a first plate portion located outside the transverse direction of the water receiving tray; a second plate portion connected to the first plate portion and located above the water receiving tray, and a protruding portion extending downward is provided on the second plate portion, and the protruding portion is inserted into the recessed portion.

[0021] In the present application, the cooperation between the recessed portion and the protruding portion is conducive to the positioning and installation between the first cover plate and the water receiving tray.

[0022] In some embodiments, a first connecting portion extending towards the first cover plate is provided on the first flanging portion, and the first connecting portion and the protruding portion are connected by a fastener.

[0023] In some embodiments, the plate surface of the second cover plate abuts against the plate surface of the second end plate.

[0024] In the present application, the plate surface of the second cover plate abuts against the plate surface of the second end plate to form contact sealing, which can reduce or even avoid the leakage of air flow from the periphery of the second end plate.

[0025] In some embodiments, a plurality of second connecting portions extending forward are provided on the second end plate, and the second cover plate and the second connecting portions are connected by fasteners.

[0026] In the present application, by providing a plurality of second connecting portions on the first end plate for connecting with the second cover plate, the area of the second end plate can be reduced, saving materials.

[0027] In some embodiments, the housing assembly includes: an outer shell; a heat insulation layer connected to the top inner wall of the outer shell, and a first convex portion and a second convex portion are provided at the bottom of the heat insulation layer; a first inclined surface is provided at the front side of the top of the first cover plate, and the first inclined surface and the front side wall of the outer shell enclose a first groove; the first groove is adapted to the first convex portion; a second inclined surface is provided at the front side of the top of the second cover plate, and the second inclined surface and the front side wall of the outer shell enclose a second groove; the second groove is adapted to the first convex portion.

[0028] In the present application, inclined surfaces are provided at the front tops of the first cover plate and the second cover plate, so that grooves are enclosed between the cover plates and the front side walls, and the bottom end of the heat insulation layer is adapted to the grooves, which can realize the positioning of the heat insulation layer, simplify the positioning structure of the heat insulation layer on the indoor unit, and improve the assembly efficiency of the heat insulation layer.

[0029] In some embodiments, the water receiving tray includes: a water collecting area disposed below the heat exchanger; a drainage area connected to the water collecting area and located on one side of the heat exchanger; and a partition part disposed in the water receiving tray to separate the water collecting area and the drainage area; a second cover plate abuts against the upper end of the partition part.

[0030] In this application, the second cover plate abuts against the partition part, which can prevent air leakage from the bottom of the second cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shows the appearance of an air conditioner indoor unit according to some embodiments;

[0032] Figure 2 Shows the appearance of an air conditioner indoor unit from another angle according to some embodiments;

[0033] Figure 3 Shows a cross-sectional view of an air conditioner indoor unit according to some embodiments;

[0034] Figure 4 Shows a perspective view of the water receiving tray in an air conditioner indoor unit according to some embodiments;

[0035] Figure 5 Shows a perspective view of the heat exchanger in an air conditioner indoor unit according to some embodiments;

[0036] Figures 6 to 8 Shows a partial view of an air conditioner indoor unit according to some embodiments;

[0037] Figure 9 Shows an exploded view of the first cover plate and the first end plate in an air conditioner indoor unit according to some embodiments;

[0038] Figure 10 Shows a side view of the first cover plate in an air conditioner indoor unit according to some embodiments;

[0039] Figure 11 Shows a perspective view of the second cover plate and the second end plate in an air conditioner indoor unit according to some embodiments;

[0040] Figure 12 Shows an exploded view of the second cover plate and the second end plate in an air conditioner indoor unit according to some embodiments;

[0041] Figure 13 Shows a partial view of an air conditioner indoor unit according to some embodiments;

[0042] Figure 14 Shows a cross-sectional view of an air conditioner indoor unit according to some other embodiments;

[0043] Figure 15 Shows a perspective view of the heat exchanger in an air conditioner indoor unit according to some other embodiments;

[0044] Figures 16 to 18 Shows a partial view of an air conditioner indoor unit according to some other embodiments;

[0045] Figure 19 Shows an exploded view of a first cover plate and a first end plate in an air conditioner indoor unit according to some other embodiments;

[0046] Figure 20 Shows a side view of a first cover plate in an air conditioner indoor unit according to some other embodiments;

[0047] Figure 21 Shows a perspective view of a second cover plate and a second end plate in an air conditioner indoor unit according to some other embodiments;

[0048] Figure 22 Shows a partial view of an air conditioner indoor unit according to some other embodiments.

[0049] In the above figures, 10 is a housing assembly; 11 is an air inlet; 12 is an air outlet; 13 is a middle partition; 14 is a housing; 141 is a top wall; 142 is a bottom wall; 143 is a left side wall; 144 is a right side wall; 145 is a front side wall; 15 is a heat insulation layer; 151 is a first convex portion; 152 is a second convex portion; 20 is a fan; 30 is a heat exchanger; 31 is a heat exchanger main body; 310 is a flanging hole; 311 is a heat exchange tube; 312 is a fin; 32 is a first end plate; 321 is a first flanging portion; 322 is a first connecting portion; 323 is a first flanging part; 324 is a second flanging part; 33 is a second end plate; 331 is a second flanging portion; 332 is a third flanging part; 3321 is a positioning groove; 334 is a fourth flanging part; 335 is a second connecting portion; 34 is a first heat exchange part; 35 is a second heat exchange part; 36 is a third heat exchange part; 37 is a straight section part; 38 is an inclined section part; 40 is a water receiving tray; 401 is a recessed portion; 41 is a water receiving area; 42 is a drainage area; 43 is a separating portion; 50 is a first cover plate; 501 is a plugging portion; 51 is a supporting portion; 511 is a first supporting part; 512 is a second supporting part; 513 is a supporting reinforcing rib; 52 is a limiting portion; 521 is a limiting reinforcing rib; 53 is a first plate part; 54 is a second plate part; 541 is a protruding portion; 55 is a first inclined surface; 56 is a first groove; 60 is a second cover plate; 61 is a third flanging portion; 611 is a limiting piece; 62 is a second inclined surface; 63 is a second groove; 64 is a fourth flanging portion; 65 is a fifth flanging portion. Detailed implementation manners

[0050] To make the objectives and implementation manners of this application clearer, the following will clearly and completely describe the exemplary implementation manners of this application with reference to the accompanying drawings in the exemplary embodiments of this application. Apparently, the described exemplary embodiments are only a part, rather than all, of the embodiments of this application.

[0051] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this application.

[0052] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise stated, the meaning of "plural" is two or more.

[0053] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In this application, the air conditioner performs the refrigeration cycle 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.

[0055] The compressor compresses the refrigerant gas in a low-temperature and low-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0056] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by using the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0057] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger. The indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0058] The indoor heat exchanger and the outdoor heat exchanger serve as condensers or evaporators. When the indoor heat exchanger serves as a condenser, the air conditioner serves as a heater in the heating mode. When the indoor heat exchanger serves as an evaporator, the air conditioner serves as a cooler in the cooling mode.

[0059] The air conditioner according to an embodiment of the present application can be an all-in-one machine in which the indoor unit and the outdoor unit are integrated in one housing, or can be a split machine in which the indoor unit and the outdoor unit are installed independently and separately.

[0060] The following takes the indoor unit in the split machine and the air duct machine with the indoor unit installed on the ceiling as examples to introduce the present application:

[0061] Refer to Figures 1 to 3 , the air conditioner indoor unit according to an embodiment of the present application includes a housing assembly 10, and a plurality of components constituting the refrigeration cycle are installed in the housing assembly 10.

[0062] The housing assembly 10 is in a cuboid shape. Among a set of opposite sides of the housing assembly 10, an air inlet 11 is provided on one side, and an air outlet 12 is provided on the other side. Indoor air is introduced into the housing assembly 10 through the air inlet 11 and sent into the indoor space through the air outlet 12.

[0063] For the convenience of description, in the present application, it is defined that on the air conditioner indoor unit, the side where the air outlet 12 is located is the front side, and the other side opposite thereto is the rear side. Figure 3 As shown, the air outlet 12 is in the front and the air inlet 11 is in the rear.

[0064] In an example of an installation scenario, the air inlet 11 can be docked with the air inlet grille of the ceiling decoration. Thus, indoor air can flow into the housing assembly 10 through the air inlet grille and the air inlet 11. A wind port flange can be provided outside the air outlet 12, and the wind port flange can extend into the indoor space through a connecting air duct.

[0065] Specifically refer to Figure 3, a middle partition 13 can be arranged inside the housing assembly 10. The space inside the housing assembly 10 is divided into an air inlet chamber and an air outlet chamber by the middle partition 13. The air inlet chamber is communicated with the air inlet 11, and the air outlet chamber is communicated with the air outlet 12.

[0066] The air conditioner indoor unit may include a fan 20, which is arranged inside the air inlet chamber. The fan 20 can adopt a centrifugal fan, and the air flow at the exhaust end of the fan 20 blows towards the air outlet chamber through the middle partition 13.

[0067] The air conditioner indoor unit may include a heat exchanger 30, which is arranged inside the air outlet chamber. The heat exchanger 30 is used to absorb heat from the air introduced into the housing assembly 10 or transfer heat to the air.

[0068] Under the action of the fan 20, indoor air enters the air inlet chamber from the air inlet 11, then flows into the air outlet chamber through the fan 20, and flows towards the air outlet 12 after heat exchange through the heat exchanger 30.

[0069] During the refrigeration process, the refrigerant on the indoor side presents a low temperature state. Through the heat exchange effect of the heat exchanger 30 on the indoor side, the heat exchange between the low-temperature refrigerant and the indoor air will cause water vapor in the air to condense. The condensed water will adhere to the surface of the heat exchanger 30, and after the condensed water accumulates, it will drip into the water receiving tray 40 below.

[0070] The water receiving tray 40 can be connected to a drain pipe connected to the outside of the housing assembly 10, and drain the condensed water to the outside of the housing assembly 10.

[0071] In some embodiments, referring to Figure 4 , the water receiving tray 40 includes a water collection area 41, and the water collection area 41 is located below the heat exchanger 30.

[0072] The water receiving tray 40 includes a drainage area 42, and the drainage area 42 is connected to the right side of the water collection area 41. A drainage pump and other related drainage components can be connected at the drainage area 42. The space above the drainage area 42 can be a layout space for the copper pipes connecting the heat exchanger 30. The water collection area 41 and the drainage area 42 are separated by a partition 43.

[0073] In this application, continue to refer to Figure 3 , the upper end of the heat exchanger 30 is in contact with the housing assembly 10, and the bottom end of the heat exchanger 30 abuts against the water receiving tray 40, so as to ensure that the air flow does not flow through the upper or lower part of the heat exchanger 30.

[0074] In this application, referring to Figure 5 , the heat exchanger 30 includes a heat exchanger main body 31. The heat exchanger main body 31 can be a finned heat exchanger, and the heat exchanger main body 31 includes heat exchange tubes 311 and fins 312. When observed from the side, a plurality of heat exchange tubes 311 are arranged at intervals in the up and down directions. The ends of the heat exchange tubes 311 are connected in a "U" shape. The fins 312 are penetrated on the heat exchange tubes 311.

[0075] The heat exchange tubes 311 are filled with a refrigerant for heat exchange circulation, and the fins 312 are used to increase the heat exchange area of the heat exchange tubes 311 to improve the heat exchange efficiency of the heat exchanger 30.

[0076] The heat exchanger 30 includes end plates located at both ends of the heat exchanger main body 31. The end plates limit the fins 312 to prevent the fins 312 from detaching from the heat exchange tubes 311.

[0077] In this application, a plurality of flanging holes 310 penetrating left and right are provided on the end plates for the heat exchange tubes 311 to pass through. The "U"-shaped connecting portions between the heat exchange tubes 311 are located outside the end plates.

[0078] The end plates include a first end plate 32 on the left side of the heat exchanger main body 31 and a second end plate 33 on the right side of the heat exchange main body 31.

[0079] Referring to Figure 6 and Figure 7 , the air conditioner indoor unit includes a first cover plate 50. The first cover plate 50 is connected to the left side of the water receiving tray 40, and the first cover plate 50 is connected to the first end plate 32 and the housing assembly 10 to minimize or even avoid air flow from flowing from the left side of the heat exchanger 30 to the air outlet 12 without passing through the heat exchanger 30.

[0080] The first cover plate 50 is in contact connection with the first end plate 32 so that a contact seal is formed between the first cover plate 50 and the first end plate 32; the upper side surface of the first cover plate 50 abuts against the upper inner wall of the housing assembly 10, and the front side surface of the first cover plate 50 abuts against the front inner wall of the housing assembly 10. Thus, the first end plate 32 can be closed by the first cover plate 50.

[0081] Referring to Figure 8 , the air conditioner indoor unit includes a second cover plate 60. The second cover plate 60 corresponds to the upper side of the partition portion 43 of the water receiving tray 40. The lower end of the second cover plate 60 can abut against the partition portion 43 to prevent air flow from passing through below the second cover plate 60.

[0082] The second cover plate 60 is connected to the second end plate 33 and the housing assembly 10 to minimize or even avoid air flow from flowing from the right side of the heat exchanger 30 to the air outlet 12 without passing through the heat exchanger 30.

[0083] The rear end of the second cover plate 60 is in contact connection with the front end of the second end plate 33 so that a contact seal is formed between the second cover plate 60 and the second end plate 33; the upper side surface of the second cover plate 60 abuts against the upper inner wall of the housing assembly 10, and the front side surface of the second cover plate 60 abuts against the front inner wall of the housing assembly 10. Thus, the second end plate 32 can be closed by the second cover plate 60.

[0084] In this application, a first cover plate 50 is connected to the left side of the first end plate 32. By abutting the upper side and the front side of the first cover plate 50 against the housing assembly 10 respectively, the space on the left side of the first end plate 32 is enclosed, preventing the air flow from flowing from the space on the left side of the first end plate 32 to the air outlet 12.

[0085] In this application, a second cover plate 60 is connected to the front side of the second end plate 33. By abutting the upper side and the front side of the second cover plate 60 against the housing assembly 10 respectively, the space on the right side of the second end plate 33 is enclosed, preventing the air flow from flowing from the space on the right side of the second end plate 33 to the air outlet 12.

[0086] Due to the blocking effect of the first cover plate 50 and the second cover plate 60, the air flow can be made to flow from the heat exchanger 30 to the air outlet 12 to the greatest extent, ensuring the heat exchange efficiency of the heat exchanger 30 and improving the working efficiency of the air conditioner indoor unit.

[0087] In some embodiments, referring to Figure 9 , a first flanging portion 321 that is flanged to the left is provided at the front end of the first end plate 32. A support portion 51 that protrudes in the direction (right side) close to the first end plate 32 is provided on the right side surface of the first cover plate 50. The first flanging portion 321 abuts against the support portion 51.

[0088] Since the gap between the first flanging portion 321 and the support portion 51 is not in the same direction as the overall flow direction (front-back direction) of the air flow, the arrangement where the first flanging portion 321 abuts against the support portion 51 increases the resistance to the air flow passing through this gap, preventing the air flow from leaking from the first flanging portion 321.

[0089] In addition, the support portion 51 can support the first end plate 32, ensuring the stability of the left end position of the heat exchanger 30.

[0090] In addition, the support portion 51 can position the first end plate 32, improving the assembly efficiency between the first cover plate 50 and the first end plate 32.

[0091] The lower part of the first flanging portion 321, the part located in the water receiving tray 40, can abut against the side wall of the water receiving tray 40. Among the middle and upper parts of the first flanging portion 321 located above the water receiving tray 40, at least the left end surface of the part that does not cooperate with the support portion 51 abuts against the right end surface of the first cover plate 50.

[0092] According to the embodiments of this application, referring to Figure 9 and Figure 10 , a limiting portion 52 is further provided on the right side surface of the first cover plate 50. The limiting portion 52 is spaced apart from the support portion 51. The spaced space between the limiting portion 52 and the support portion 51 forms an inserting portion 501. The first flanging portion 321 of the first end plate 32 is inserted into the inserting portion 501.

[0093] The limiting part 52 and the supporting part 51 are arranged in the front - rear direction, and can limit the movement of the first flanging part 321 in the front - rear direction.

[0094] In some embodiments, a first connecting part 322 may be provided on the first flanging part 321. The first connecting part 322 and the first cover plate 50 are connected by fasteners such as screws, thereby realizing the fastening connection between the first end plate 32 and the first cover plate 50.

[0095] The first cover plate 50 includes a first plate portion 53. The first plate portion 53 is located on the left side of the water receiving tray 40 and abuts against the left side surface of the water receiving tray 40.

[0096] The first cover plate 50 includes a second plate portion 54. The second plate portion 54 is connected to the right side of the first plate portion 53, and the lower end of the second plate portion 54 abuts against the upper end of the water receiving tray 40.

[0097] A convex portion 541 protruding downward is provided at the lower end of the second plate portion 54. Figure 4 , at the top of the left side wall of the water receiving tray 40, a concave portion 401 recessed downward is provided. The convex portion 541 is inserted into the concave portion 401.

[0098] The first connecting part 322 on the first flanging part 321 and the convex portion 541 are connected by screws.

[0099] The convex portion 541 may be triangular. From top to bottom, the cross - section of the convex portion 541 gradually decreases. Correspondingly, the concave portion 401 is also triangular. From top to bottom, the cross - section of the concave portion 401 gradually increases. The triangular structural form facilitates the installation of the convex portion 541 into the concave portion 401 and ensures the assembly efficiency. In addition, the cooperation between the convex portion 541 and the concave portion 401 realizes the positioning between the first cover plate 50 and the water receiving tray 40, further improving the assembly efficiency.

[0100] The first connecting part 322 abuts against the front inclined surface of the convex portion 541.

[0101] In some embodiments, referring to Figure 3 , the heat exchanger 30 is generally in a "W" shape. The "W" - shaped heat exchanger is a special - shaped (irregular shape) heat exchanger, which can increase the contact area between air and fins, and give full play to the heat - exchange performance of the heat exchanger. Compared with the vertical - row heat exchanger, when the heat - exchange effect is the same, the material used for the fins is reduced, and the cost is reduced by 15%.

[0102] The heat exchanger body 31 includes a first heat - exchange part 34. The first heat - exchange part 34 is located in the middle of the heat exchanger 30 in the height direction. The first heat - exchange part 34 extends roughly vertically. The first heat - exchange part 34 may extend in a wavy shape, which can increase the heat - exchange area and improve the heat - exchange efficiency.

[0103] The heat exchanger main body 31 includes a second heat exchange part 35. The second heat exchange part 35 extends obliquely upward from the upper end of the first heat exchange part 34 in a direction away from the air outlet 12.

[0104] The heat exchanger main body 31 includes a third heat exchange part 36. The third heat exchange part 36 extends obliquely downward from the lower end of the first heat exchange part 34 in a direction away from the air outlet 12.

[0105] The top end of the second heat exchange part 35 abuts against the housing assembly 10. The bottom end of the third heat exchange part 36 abuts against the water receiving tray 40.

[0106] Refer to Figure 9 and Figure 10 In the middle upper part of the front end of the first end plate 32, it extends vertically. In the projection on the plate surface of the first end plate 32, the front end contour of the heat exchanger main body 31 is located on the first end plate 32.

[0107] The rear end of the first end plate 32 can extend vertically in the up and down direction. In other embodiments, since there is no connecting structure at the rear edge of the first end plate 32, the shape of the rear edge of the first end plate 32 can be the same as the shape of the rear edge of the left end of the heat exchanger main body 31. In this way, the area occupied by the first end plate 32 can be reduced, making the overall structure of the heat exchanger 30 relatively compact.

[0108] In some embodiments, within the height range where the second heat exchange part 35 and the first heat exchange part 34 of the heat exchanger main body 31 are located, the first flanging part 321 extends in the up and down direction. Within the height range where the third heat exchange part 36 of the heat exchanger main body 31 is located, the first flanging part 321 has an inclination angle substantially the same as that of the third heat exchange part 36.

[0109] The first flanging part 321 includes a first flanging portion 323. The first flanging portion 323 is located in the middle upper part of the first flanging part 321 and extends in the up and down direction.

[0110] The first flanging part 321 includes a second flanging portion 324. The second flanging portion 324 is located on the lower side of the first flanging part. Similar to the third heat exchange part 36, the second flanging portion 324 extends obliquely downward from top to bottom in a direction away from the air outlet 11.

[0111] The support part 51 includes a first support portion 511. The first support portion 511 abuts against the first flanging portion 323.

[0112] The support part 51 includes a second support portion 512. The second support portion 512 abuts against the second flanging portion 324.

[0113] The support portion 51 can be located at the rear side of the first flanging portion 321, and can support the heat exchanger 30 to prevent the heat exchanger 30 from tipping backward.

[0114] The limiting portion 52 is located at the front side of the first flanging portion 321 and is used to limit the forward movement of the heat exchanger 30.

[0115] In this application, both the first flanging portion 323 and the support portion 51 are in a straight plate shape, which is beneficial to the contact and cooperation between the two. If the first flanging portion 321 generally corresponds to the outer shape of the heat exchanger body 31 and includes two straight plates forming an angle, one straight plate corresponds to the first heat exchange portion 34, and the other straight plate corresponds to the second heat exchange portion 35. When the two straight plates are in contact with the support portion 51, due to assembly errors, machining errors, etc., it is very easy to have a problem that one straight plate cannot be completely in contact, which is not conducive to the contact and cooperation between the first flanging portion 321 and the support portion 51, and will cause a large gap between the first flanging portion 321 and the support portion 51, thereby increasing the risk of air leakage.

[0116] In some embodiments, the length of the limiting portion 52 can be less than that of the support portion 61, which can save materials at the limiting portion 52 and reduce costs.

[0117] In the height direction, the limiting portion 52 is arranged corresponding to the upper part of the support portion 61 to ensure the limiting effect on the heat exchanger 30.

[0118] A limiting reinforcing rib 521 is arranged on the side (front side) of the limiting portion 52 far from the inserting portion 501, which can increase the structural strength of the limiting portion 52 and prevent the limiting portion 52 from deforming or breaking under the action of the heat exchanger 30.

[0119] In some embodiments, a first connecting portion 322 is provided on the second flanging portion 324, and the first connecting portion 322 is connected to the protruding portion 541 of the first cover plate 50, thereby realizing the connection between the first cover plate 50 and the first end plate 32.

[0120] In some embodiments, referring to Figure 11 and Figure 12 , the rear end of the second cover plate 60 is spliced with the front end of the second end plate 33.

[0121] A second flanging portion 331 extending to the right is provided at the front end of the second end plate 33. A third flanging portion 61 extending to the right is provided at the rear end of the second cover plate 60. The third flanging portion 61 abuts against and is connected to the second flanging portion 331.

[0122] The second flanging portion 331 includes a third flanging portion 332 located at the upper part. Within the height range where the second heat exchange portion 35 is located, the third flanging portion 331 extends obliquely downward in a straight line from top to bottom in the direction close to the air outlet 12.

[0123] The second flanging part 331 includes a fourth flanging part 334 located below the third flanging part 332. The fourth flanging part 334 is within the height range where the first heat exchange part 34 is located, and the fourth flanging part 334 extends linearly in the up and down directions.

[0124] A positioning groove 3321 is provided on the third flanging part 332. A limiting piece 611 is provided at the top end of the third flanging part 61. The limiting piece 611 is inserted from the positioning groove 3321 and abuts against the rear side surface of the third flanging part 332, thereby realizing the hook connection between the third flanging part 61 and the third flanging part 332.

[0125] Through the installation of the limiting piece 611 at the positioning groove 3321, the positioning between the third flanging part 61 and the second flanging part 331 can be realized, that is, the positioning between the second cover plate 60 and the second end plate 33 can be realized.

[0126] The third flanging part 61 and the fourth flanging part 334 are fixedly connected by screws.

[0127] In other embodiments, the connection structure between the second cover plate 60 and the second end plate 33 may be the same as the following sickle-shaped heat exchanger part.

[0128] According to the embodiment of the present application, continue to refer to Figures 1 to 3 , the housing assembly 10 includes an outer shell 14. The outer shell 14 can be a sheet metal part.

[0129] The outer shell 14 includes a top wall 141, forming the top structure of the outer shell 14; a bottom wall 142, forming the bottom structure of the outer shell 14; a left side wall 143, connected between the left end of the top wall 141 and the left end of the bottom wall 142; a right side wall 144, connected between the right end of the top wall 141 and the right end of the bottom wall 142; a front side wall 145, located on the front side of the outer shell 14. An air outlet 12 is provided on the front side wall 145.

[0130] In some embodiments, the upper parts of the top wall 141, the left side wall 143 and the right side wall 144 can be made of the same top plate. The lower part of the right side wall 144 is integrally connected to the upper part of the right side wall 144.

[0131] The left side wall 143 and the first cover plate 50 are connected by screws.

[0132] The front side surface of the first cover plate 50 abuts against the front side wall 145 to form a contact seal. The front end of the second cover plate 60 abuts against the front side wall 145 to form a contact seal.

[0133] The second cover plate 60 can be a sheet metal part. The front end of the second cover plate 60 has a fourth flanging part 64, and the fourth flanging part 64 abuts against the front side wall 145 and is connected by screws.

[0134] The housing assembly 10 may include a thermal insulation layer 15. The material of the thermal insulation layer 15 may be thermal insulation foam. The thermal insulation layer 15 is used to prevent condensation at the top of the air outlet 12.

[0135] In some embodiments, the thermal insulation layer 15 is connected to the inner side of the top wall 141. The thermal insulation layer 15 is located in the air outlet cavity. In the front-rear direction, the thermal insulation layer 15 extends from the air outlet 12 to the middle partition 13.

[0136] Referring to Figure 13 , at the top of the front end of the first cover plate 50, there is a first inclined surface 55, and the first inclined surface 55 slopes downward in the direction close to the air outlet 12. An upward-opening first groove 56 is formed between the first inclined surface 55 and the front side wall 145 of the housing 10.

[0137] At the top of the front end of the second cover plate 60, there is a second inclined surface 62, and the second inclined surface 62 slopes downward in the direction close to the air outlet 12. An upward-opening second groove 63 is formed between the second inclined surface 62 and the front side wall 145 of the housing 10.

[0138] At the top of the front end of the second cover plate 60, there is an inclined fifth flanging part 65. The fifth flanging part 65 slopes downward in the direction close to the air outlet 12. The top surface of the second flanging part 65 is the second inclined surface 62.

[0139] Referring to Figure 6 and Figure 8 , at the bottom of the front end of the thermal insulation layer 15, there are a first convex part 151 and a second convex part 152. The first convex part 151 is inserted into the first groove 56, and the second convex part 152 is inserted into the second groove 63. The cooperation of the first groove 56, the second groove 63 and the thermal insulation layer 15 can realize the positioning of the thermal insulation layer 15.

[0140] In this embodiment, the top end of the heat exchanger 30 abuts against the thermal insulation layer 15. The top side surfaces of the first cover plate 50 and the second cover plate 60 both abut against the thermal insulation layer 15.

[0141] In other embodiments, the structure related to the thermal insulation layer 15 may be the same as the embodiment part of the sickle-shaped heat exchanger described below.

[0142] In some embodiments, referring to Figure 14 and Figure 15 , the outer shape of the heat exchanger 30 is generally sickle-shaped. From top to bottom, the heat exchanger 30 extends obliquely away from the air outlet 11. Compared with a cuboid-shaped heat exchanger, the sickle-shaped heat exchanger 30 has a larger heat exchange area and higher heat exchange efficiency.

[0143] The heat exchanger 30 includes a straight section part 37. The straight section part 37 is located at the top of the heat exchanger 30. The straight section part 37 extends vertically in the height direction.

[0144] The heat exchanger 30 includes an inclined section portion 38. The inclined section portion 38 is connected to the lower side of the straight section portion 37. The center line in the extending direction of the inclined section portion 38 can be composed of multiple straight line segments or curves with different inclination angles.

[0145] The plate surface contour of the first end plate 32 can be substantially the same as the contour of the left end surface of the heat exchanger body 31.

[0146] Refer to Figures 16 to 18 , a first cover plate 50 is connected to the left side of the first end plate 32. A contact seal is formed between the first cover plate 50 and the first end plate 32; the upper side surface and the front side surface of the first cover plate 50 are respectively abutted against the housing assembly 10 to form a contact seal. Thus, the space on the left side of the first end plate 32 is enclosed, reducing or even avoiding the air flow from flowing from the space on the left side of the first end plate 32 to the air outlet 12.

[0147] A second cover plate 60 is connected to the front side of the second end plate 33. A contact seal is formed between the second cover plate 60 and the second end plate 33; the upper side surface and the front side surface of the second cover plate 60 are respectively abutted against the housing assembly 10 to form a contact seal. Thus, the space on the right side of the second end plate 33 is enclosed, reducing or even avoiding the air flow from flowing from the space on the right side of the second end plate 33 to the air outlet 12.

[0148] Refer to Figure 19 、 Figure 20 , the support portion 51 can be located on the front side of the first flanging portion 321 to support the left end of the heat exchanger 30 and prevent the heat exchanger 30 from tipping forward and downward.

[0149] The support portion 51 abuts against the upper part and the middle part of the first flanging portion 321 to maximize the contact area between the support portion 51 and the first flanging portion 321.

[0150] On the side (front side) of the support portion 51 away from the insertion portion 501, a plurality of spaced-apart support reinforcing ribs 513 are provided.

[0151] The support reinforcing ribs 513 can increase the structural strength of the support portion 51 and avoid problems such as deformation and fracture of the support portion 51 under the action of the heat exchanger 30.

[0152] The limiting portion 52 is provided on the rear side of the first flanging portion 321 and is used to limit the backward movement of the heat exchanger 30.

[0153] In some embodiments, the length of the limiting portion 52 can be less than that of the support portion 61, which can save materials at the limiting portion 52 and reduce costs.

[0154] The limiting portion 52 can correspond to the upper part of the first flanging portion 321 in the height direction. The limiting portion 52 extends in the up and down direction.

[0155] The lower part of the first flanging portion 321 is provided with a first connecting portion 322 extending to the left, and the first connecting portion 322 is connected to the convex portion 541 of the first cover plate 50, thereby realizing the connection between the first cover plate 50 and the first end plate 32.

[0156] In some embodiments, referring to Figure 21 , the outer shape of the plate surface of the second end plate 33 is substantially the same as the outer shape of the right end surface of the heat exchanger 30.

[0157] The rear end of the left side surface of the second cover plate 60 can abut against the front end of the right side surface of the second end plate 33.

[0158] The front end of the second end plate 33 is provided with a second connecting portion 335 extending forward, and the second connecting portion 335 is connected to the second cover plate 60 by screws.

[0159] Specifically, there are three second connecting portions 335 arranged at intervals, which can ensure the firm connection between the second end plate 33 and the second cover plate 60.

[0160] In other embodiments, the connection structure between the second end plate 33 and the second cover plate 60 can be the same as that of the above-mentioned "W" - shaped heat exchanger part.

[0161] The first end plate 32, the second end plate 33 and / or the second cover plate 60 can be sheet metal parts, and the flanging portions thereon can be formed by bending. The first cover plate 50 can be a plastic part, and the structure thereon is formed by injection molding.

[0162] In some embodiments, referring to Figure 22 , at the top of the front end of the first cover plate 50, there is a first inclined surface 55, and the first inclined surface 55 slopes downward in the direction close to the air outlet 12. A first groove 56 with an upward opening is formed between the first inclined surface 55 and the front side wall 145 of the housing 10.

[0163] At the top of the front end of the second cover plate 60, there is a second inclined surface 62, and the second inclined surface 62 slopes downward in the direction close to the air outlet 12. A second groove 63 with an upward opening is formed between the second inclined surface 62 and the front side wall 145 of the housing 10.

[0164] Referring to Figure 16 and Figure 18 , the heat insulation layer 15 is in a strip shape and is only arranged at the front top corners of the housing 14.

[0165] At the lower parts of the left and right sides of the heat insulation layer 15, there are respectively a first convex portion 151 and a second convex portion 152. The first convex portion 151 is adapted to be within the first groove 56, and the second convex portion 152 is adapted to be within the second groove 63. The adaptation of the first groove 56, the second groove 63 and the heat insulation layer 15 can realize the positioning of the heat insulation layer 15.

[0166] In this embodiment, the top end of the heat exchanger 30 abuts against the front side wall 145. The rear parts of the top side surfaces of the first cover plate 50 and the second cover plate 60 both abut against the front side wall 145.

[0167] The front side surface of the top of the first flanging portion 321 can abut against the rear end surface of the heat insulation layer 15.

[0168] As described above, in the embodiment of the present application, the first cover plate 50 is connected to the left side of the first end plate 32, and the upper side surface and the front side surface of the first cover plate 50 respectively abut against the housing assembly 10 to seal the left side space of the first end plate 32, preventing the air flow from flowing from the left side space of the first end plate 32 to the air outlet 12. The second cover plate 60 is connected to the front side of the second end plate 33, and the upper side surface and the front side surface of the second cover plate 60 respectively abut against the housing assembly 10 to seal the right side space of the second end plate 33, preventing the air flow from flowing from the right side space of the second end plate 33 to the air outlet 12. Due to the blocking effect of the first cover plate 50 and the second cover plate 60, the air flow can flow from the heat exchanger 30 to the air outlet 12 to the greatest extent, ensuring the heat exchange efficiency of the heat exchanger 30 and improving the working efficiency of the air conditioner indoor unit.

[0169] In addition, a support portion 51 that abuts against the first flanging portion 321 of the first end plate 32 is provided on the first cover plate 50. Since the gap between the first flanging portion 321 and the support portion 51 is not in the same direction as the overall flow direction (front-rear direction) of the air flow, the arrangement of the first flanging portion 321 abutting against the support portion 51 increases the resistance of the air flow flowing through this gap, and can reduce or even avoid the leakage of the air flow from the left side of the first flanging portion 321.

[0170] In addition, the support portion 51 can support the heat exchanger 30 to prevent the heat exchanger 30 from tipping over.

[0171] In addition, a limiting portion 52 is provided on the first cover plate 50. The space between the limiting portion 52 and the support portion 51 forms a plugging portion 501, and the first flanging portion 321 is plugged into the plugging portion 501, which can realize the positioning between the first cover plate 50 and the first end plate 32 and improve the assembly efficiency.

[0172] In addition, a third flanging portion 61 is provided on the second cover plate 60, and a second flanging portion 331 is provided on the second end plate 33. The third flanging portion 61 and the second flanging portion 331 abut against each other to form a contact seal, which can increase the resistance of the air flow flowing through the connection between the second cover plate 60 and the second end plate 33 and reduce the leakage of the air flow from the second end plate 33.

[0173] In addition, the side surface of the second cover plate 60 abuts against the side surface of the second end plate 33 to form a contact seal, which can increase the resistance of the air flow passing through the connection between the second cover plate 60 and the second end plate 33 and reduce the leakage of the air flow from the second end plate 33.

[0174] In addition, for the "W"-type heat exchanger, the front end of the first end plate 32 extends vertically, so that the shape of the first flanging portion 321 is relatively regular, thereby ensuring the contact area between the first flanging portion 321 and the support portion 51 and ensuring the difficulty of air leakage from the first flanging portion 321.

[0175] 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and 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.

[0176] For the sake of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussions are not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner indoor unit, characterized in that, Comprising: A housing assembly, on which there is an air outlet, defining that the air outlet is located at the front end of the housing assembly; A heat exchanger, disposed in the housing assembly corresponding to the air outlet, for exchanging heat with the air passing through it. At least a part of the heat exchanger extends obliquely downward and away from the air outlet. The heat exchanger has a first end plate and a second end plate at its two ends, and a first flanging portion is provided on the first end plate; A first cover plate, which is connected to the first end plate. The upper end and the front end of the first cover plate are respectively in contact with the housing assembly. The first cover plate is provided with: A support portion, which protrudes towards the first end plate, and the support portion abuts against the front side of the first flanging portion; A second cover plate, whose rear end is connected to the second end plate. The upper end and the front end of the second cover plate are respectively in contact with the housing assembly.

2. The indoor air conditioner according to claim 1, wherein The support portion abuts at least against the upper middle part of the first flanging portion.

3. The indoor air conditioner according to claim 1, characterized in that, Further comprising: A water receiving tray, disposed below the heat exchanger, and a recessed portion is provided on the side wall of the water receiving tray; The first cover plate includes: A first plate portion, located laterally outside the water receiving tray; A second plate portion, connected to the first plate portion and located above the water receiving tray. A protruding portion extending downward is provided on the second plate portion, and the protruding portion is inserted into the recessed portion.

4. The air conditioner indoor unit according to claim 3, characterized in that, A first connecting portion extending towards the first cover plate is provided on the first flanging portion, and the first connecting portion and the protruding portion are connected by a fastener.

5. The indoor air conditioner according to claim 1, characterized in that, The plate surface of the second cover plate abuts against the plate surface of the second end plate.

6. The air conditioner indoor unit according to claim 5, characterized in that, A plurality of second connecting portions extending forward are provided on the second end plate, and the second cover plate and the second connecting portions are connected by fasteners.

7. The air conditioner indoor unit according to claim 1, characterized in that, The housing assembly includes: An outer shell; A heat insulation layer, connected to the inner top wall of the outer shell. A first convex portion and a second convex portion are provided at the bottom of the heat insulation layer; A first inclined surface is provided on the front side of the top of the first cover plate, and the first inclined surface and the front side wall of the outer shell enclose a first groove; the first groove is adapted to the first convex portion; A second inclined surface is provided on the front side of the top of the second cover plate, and the second inclined surface and the front side wall of the outer shell enclose a second groove; the second groove is adapted to the first convex portion.

8. The air conditioner indoor unit according to claim 1, characterized in that, Further comprising: A water receiving tray, disposed below the heat exchanger; the water receiving tray includes: A water collecting area, disposed below the heat exchanger; A drainage area, which is connected to the water collecting area and is located on one side of the heat exchanger; and A partition portion, disposed in the water receiving tray, and the partition portion separates the water collecting area and the drainage area; The second cover plate abuts against the upper end of the partition portion.

9. An indoor air conditioner, characterized in that, Comprising: A housing assembly, on which there is an air outlet, defining that the air outlet is located at the front end of the housing assembly; A heat exchanger, disposed in the housing assembly corresponding to the air outlet, for exchanging heat with the air passing through it. At least a part of the heat exchanger extends obliquely downward and away from the air outlet. The heat exchanger has a first end plate and a second end plate at its two ends, and a first flanging portion is provided on the first end plate; The first cover plate, which is connected to the first end plate, and the upper end and the front end of the first cover plate are respectively in contact with the housing assembly. The first cover plate is provided with: A support portion and a limiting portion, and a space between the support portion and the limiting portion forms a plugging portion for plugging the first flanging portion; The second cover plate, the rear end of which is connected to the second end plate, and the upper end and the front end of the second cover plate are respectively in contact with the housing assembly.

10. The air conditioner indoor unit according to claim 9, characterized in that, The part of the heat exchanger that extends obliquely downward away from the air outlet is the inclined section part; The heat exchanger further includes: A straight section part, which is connected to the upper end of the inclined section part, and the straight section part extends vertically in the height direction; the straight section part is plugged into the plugging portion.

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