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, 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 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 reduce airflow leakage on the end plate side of the heat exchanger.

Description

Technical Field

[0001] The present 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 exchange heat with indoor air. The end plates of the heat exchanger are fixed components of the heat exchanger, which play a role in fixing the heat exchanger and also protect the heat exchanger during production and transportation.

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

[0004] The present application provides an indoor unit of an air conditioner, which can reduce the air leakage on the side of the end plates of the heat exchanger.

[0005] In one aspect of the present application, an indoor unit of an air conditioner includes: a housing assembly, on which an air outlet is provided, and the air outlet is defined to be 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 to exchange heat with the air passing through it. 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 first flanging portion; 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.

[0006] 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, so that the left space of the first end plate can be closed, preventing the air airflow from flowing from the left space of the first end plate towards 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 in contact with the housing assembly, so that the right space of the second end plate can be closed, preventing the air airflow from flowing from the right space of the second end plate towards the air outlet.

[0008] Due to the blocking effect of the first cover plate and the second cover plate, the air airflow 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] The supporting portion on the first cover plate abuts against the first flanging portion on the first end plate. The supporting portion can not only play a role in supporting and positioning the first flanging portion, but also form a contact seal between the first cover plate and the first end plate, reducing the air leakage.

[0010] On the other hand of the present application, an air conditioner indoor unit 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, the heat exchanger having a first end plate and a second end plate at both ends thereof; a first cover plate in contact connection with the first end plate; the upper end and the front end of the first cover plate are respectively abutted against the housing assembly; a second cover plate in contact connection with the second end plate, the upper end and the front end of the second cover plate are respectively abutted against the housing assembly.

[0011] 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 abutted against the housing assembly, so that the space on the left side of the first end plate can be closed, preventing the air flow from flowing from the space on the left side of the first end plate to the air outlet.

[0012] 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 that the space on the right side of the second end plate can be closed, preventing the air flow from flowing from the space on the right side of the second end plate to the air outlet.

[0013] 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 air conditioner indoor unit.

[0014] In some embodiments, the heat exchanger includes: a first heat exchange part; a second heat exchange part obliquely extending upward away from the air outlet from the upper end of the first heat exchange part; a third heat exchange part obliquely extending downward away from the air outlet from the lower end of the first heat exchange part; a first flanging part vertically extending within the height range where the first heat exchange part and the second heat exchange part are located.

[0015] In the present application, the first heat exchange part, the second heat exchange part and the third heat exchange part form a "W" shape. For the special-shaped heat exchanger, the first flanging part extends vertically regularly, which can not only ensure the contact area between the first flanging part and the supporting part, but also simplify the structure.

[0016] In some embodiments, the flanging part includes: a first flanging part located within the height range where the first heat exchange part and the second heat exchange part are located; a second flanging part located below the first flanging part, and the second flanging part is inclined with the third heat exchange part;

[0017] The supporting part includes: a first supporting part abutted against the first flanging part; a second supporting part connected to the first supporting part and abutted against the second flanging part.

[0018] In this application, the first support part abuts against the first flanging part, and the second support part abuts against the second flanging part, ensuring the contact area between the support part and the first flanging part. The contact sealing area between the support part and the first flanging part is relatively large, which can better reduce the leakage of air flow from the periphery of the first end plate.

[0019] In some embodiments, a limiting part is provided on the first cover plate. The space between the limiting part and the support part forms a plug-in part, and the first flanging part is plugged into the plug-in part.

[0020] In this application, the support part and the limiting part are provided on the first cover plate. The support part and the limiting part are respectively located on both sides of the first flanging part, which can limit the first flanging part and prevent the heat exchanger from tipping over.

[0021] In some embodiments, the length of the limiting part is less than that of the support part, and the limiting part limits the upper part of the first flanging part.

[0022] In this application, on the premise of ensuring the limiting function of the limiting part, reducing its length can save material costs.

[0023] In some embodiments, it further includes: a water receiving tray, which is arranged below the heat exchanger, and a recessed part is provided on the side wall of the water receiving tray;

[0024] The first cover plate includes: a first plate part, which is located outside the transverse direction of the water receiving tray; a second plate part, which is connected to the first plate part and is located above the water receiving tray. A protruding part extending downward is provided on the second plate part, and the protruding part is plugged into the recessed part;

[0025] A first connecting part extending towards the first cover plate is provided on the first flanging part, and the first connecting part and the protruding part are connected by a fastener.

[0026] In this application, through the cooperation of the recessed part and the protruding part, it is beneficial to the positioning and installation between the first cover plate and the water receiving tray.

[0027] In some embodiments, a second flanging part is provided at the front end of the second end plate, and a third flanging part is provided at the rear end of the second cover plate. The third flanging part abuts against the second flanging part.

[0028] In this application, the second end plate and the second cover plate abut against each other through flanging to form a contact seal, which can not only realize the connection between the second end plate and the second cover plate, but also prevent the leakage of air flow from the periphery of the second end plate.

[0029] In some embodiments, the housing assembly includes: an outer shell; a thermal insulation layer connected to the top inner wall of the outer shell, with a first convex portion and a second convex portion provided at the bottom of the thermal insulation layer; a first inclined surface 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.

[0030] In this application, an inclined surface is provided at the front top of the first cover plate and the second cover plate, so that a groove is enclosed between the cover plate and the front side wall, and the bottom end of the thermal insulation layer is adapted to the groove, which can realize the positioning of the thermal insulation layer, simplify the positioning structure of the thermal insulation layer on the indoor unit, and improve the assembly efficiency of the thermal insulation layer.

[0031] In some embodiments, the water receiving tray includes: a water collecting area provided 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 portion provided in the water receiving tray to separate the water collecting area and the drainage area; the second cover plate abuts against the upper end of the partition portion.

[0032] In this application, the second cover plate abuts against the partition portion, which can prevent air from leaking from the bottom of the second cover plate. Description of the Drawings

[0033] Figure 1 Shows the appearance of an air conditioner indoor unit according to some embodiments;

[0034] Figure 2 Shows the appearance of an air conditioner indoor unit from another angle according to some embodiments;

[0035] Figure 3 Shows a cross-sectional view of an air conditioner indoor unit according to some embodiments;

[0036] Figure 4 Shows a perspective view of the water receiving tray in an air conditioner indoor unit according to some embodiments;

[0037] Figure 5 Shows a perspective view of the heat exchanger in an air conditioner indoor unit according to some embodiments;

[0038] Figures 6 to 8 Shows a partial view of an air conditioner indoor unit according to some embodiments;

[0039] 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;

[0040] Figure 10 Shows a side view of the first cover plate in an air conditioner indoor unit according to some embodiments;

[0041] Figure 11Shows a perspective view of a second cover plate and a second end plate in an air conditioner indoor unit according to some embodiments;

[0042] Figure 12 Shows an exploded view of a second cover plate and a second end plate in an air conditioner indoor unit according to some embodiments;

[0043] Figure 13 Shows a partial view of an air conditioner indoor unit according to some embodiments;

[0044] Figure 14 Shows a cross-sectional view of an air conditioner indoor unit according to some other embodiments;

[0045] Figure 15 Shows a perspective view of a heat exchanger in an air conditioner indoor unit according to some other embodiments;

[0046] Figures 16 to 18 Shows a partial view of an air conditioner indoor unit according to some other embodiments;

[0047] 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;

[0048] Figure 20 Shows a side view of a first cover plate in an air conditioner indoor unit according to some other embodiments;

[0049] 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;

[0050] Figure 22 Shows a partial view of an air conditioner indoor unit according to some other embodiments.

[0051] In the above figures, 10 is the housing assembly; 11 is the air inlet; 12 is the air outlet; 13 is the middle partition; 14 is the outer shell; 141 is the top wall; 142 is the bottom wall; 143 is the left side wall; 144 is the right side wall; 145 is the front side wall; 15 is the thermal insulation layer; 151 is the first convex part; 152 is the second convex part; 20 is the fan; 30 is the heat exchanger; 31 is the heat exchanger main body; 310 is the flanging hole; 311 is the heat exchange tube; 312 is the fin; 32 is the first end plate; 321 is the first flanging part; 322 is the first connecting part; 323 is the first flanging section; 324 is the second flanging section; 33 is the second end plate; 331 is the second flanging part; 332 is the third flanging section; 3321 is the positioning groove; 334 is the fourth flanging section; 335 is the second connecting part; 34 is the first heat exchange part; 35 is the second heat exchange part; 36 is the third heat exchange part; 37 is the straight section part; 38 is the inclined section part; 40 is the water receiving tray; 401 is the recessed part; 41 is the water receiving area; 42 is the drainage area; 43 is the separating part; 50 is the first cover plate; 501 is the plug-in part; 51 is the supporting part; 511 is the first supporting section; 512 is the second supporting section; 513 is the supporting reinforcing rib; 52 is the limiting part; 521 is the limiting reinforcing rib; 53 is the first plate section; 54 is the second plate section; 541 is the protruding part; 55 is the first inclined surface; 56 is the first groove; 60 is the second cover plate; 61 is the third flanging part; 611 is the limiting piece; 62 is the second inclined surface; 63 is the second groove; 64 is the fourth flanging part; 65 is the fifth flanging part. Detailed implementation manners

[0052] 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. Obviously, the described exemplary embodiments are only a part, rather than all, of the embodiments of this application.

[0053] 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 accompanying drawings, and 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, and thus should not be construed as a limitation to this application.

[0054] 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 specified, the meaning of "a plurality" is two or more.

[0055] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0056] In the present application, the air conditioner performs a 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.

[0057] 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.

[0058] 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 for heat exchange with the material to be cooled. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0059] 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.

[0060] The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. 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.

[0061] 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 independent and separately installed.

[0062] 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:

[0063] Refer to Figures 1 to 3, An air conditioner indoor unit according to an embodiment of the present application includes a housing assembly 10, and a plurality of components constituting a refrigeration cycle are installed in the housing assembly 10.

[0064] The housing assembly 10 is in a cuboid shape. Among a set of opposite side surfaces of the housing assembly 10, an air inlet 11 is provided on one side surface, and an air outlet 12 is provided on the other side surface. Indoor air is introduced into the housing assembly 10 through the air inlet 11 and is sent into the indoor space through the air outlet 12.

[0065] For convenience of description, in the present application, it is defined that the side where the air outlet 12 is located on the air conditioner indoor unit 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.

[0066] In an example of an installation scenario, the air inlet 11 can be docked with an air inlet grille for ceiling decoration. Thus, indoor air can flow into the housing assembly 10 through the air inlet grille and the air inlet 11. A tuyere flange can be provided outside the air outlet 12, and the tuyere flange can extend into the indoor space through a connecting air duct.

[0067] Specifically referring to Figure 3 , A middle partition 13 can be provided in the housing assembly 10. The space in the housing assembly 10 is separated 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.

[0068] The air conditioner indoor unit can include a fan 20, which is arranged in 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.

[0069] The air conditioner indoor unit can include a heat exchanger 30, which is arranged in 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.

[0070] 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.

[0071] During the refrigeration process, the refrigerant on the indoor side is in a low-temperature state. Through the heat exchange of the heat exchanger 30 on the indoor side, the low-temperature refrigerant exchanges heat with indoor air, which will cause water 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.

[0072] The water receiving tray 40 can be connected to a drain pipe connected to the outside of the housing assembly 10, and the condensed water is discharged to the outside of the housing assembly 10.

[0073] In some embodiments, referring toFigure 4 , the water receiving tray 40 includes a water collecting area 41, and the water collecting area 41 is located below the heat exchanger 30.

[0074] The water receiving tray 40 includes a drainage area 42, and the drainage area 42 is connected to the right side of the water collecting area 41. Related drainage components such as a drainage pump can be connected at the drainage area 42. The space above the drainage area 42 can become a layout space for the copper pipes connecting the heat exchanger 30. The water collecting area 41 and the drainage area 42 are separated by a partition portion 43.

[0075] 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.

[0076] In this application, refer 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, the 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 through the heat exchange tubes 311.

[0077] The refrigerant for heat exchange circulation flows through the heat exchange tubes 311, and the fins 312 are used to increase the heat exchange area of the heat exchange tubes 311 and improve the heat exchange efficiency of the heat exchanger 30.

[0078] The heat exchanger 30 includes end plates located at both ends of the heat exchanger main body 31. The end plates play a role in limiting the fins 312 to prevent the fins 312 from detaching from the heat exchange tubes 311.

[0079] 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 portion between the heat exchange tubes 311 is located outside the end plates.

[0080] The end plates include a first end plate 32 located on the left side of the heat exchanger main body 31 and a second end plate 33 located on the right side of the heat exchange main body 31.

[0081] Refer 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, so as to minimize or even avoid the air flow flowing from the left side of the heat exchanger 30 to the air outlet 12 without passing through the heat exchanger 30.

[0082] 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 inner wall of the upper end of the housing assembly 10, and the front side surface of the first cover plate 50 abuts against the inner wall of the front end of the housing assembly 10. Thus, the first end plate 32 can be closed by the first cover plate 50.

[0083] 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, thereby preventing the air flow from passing below the second cover plate 60.

[0084] The second cover plate 60 is connected to the second end plate 33 and the housing assembly 10, and is used to minimize or even avoid the 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.

[0085] 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 inner wall of the upper end of the housing assembly 10, and the front side surface of the second cover plate 60 abuts against the inner wall of the front end of the housing assembly 10. Thus, the second end plate 32 can be closed by the second cover plate 60.

[0086] In this 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 close the left side space of the first end plate 32 and prevent the air flow from flowing from the left side space of the first end plate 32 to the air outlet 12.

[0087] In this application, the second cover plate 60 is connected to the front side of the second end plate 33, and the upper side and the front side of the second cover plate 60 respectively abut against the housing assembly 10 to close the right side space of the second end plate 33 and prevent the air flow from flowing from the right side space of the second end plate 33 to the air outlet 12.

[0088] 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.

[0089] In some embodiments, referring to Figure 9 , the front end of the first end plate 32 is provided with a first flanging portion 321 that flanges to the left. The right side surface of the first cover plate 50 is provided with a support portion 51 that protrudes in the direction (right side) close to the first end plate 32. The first flanging portion 321 abuts against the support portion 51.

[0090] Since the gap between the first flanging portion 321 and the support portion 51 is not the same 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, and can prevent the air flow from leaking from the first flanging portion 321.

[0091] 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.

[0092] 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.

[0093] The lower part of the first flanging portion 321, the part located within 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 face of the part that does not cooperate with the support portion 51 abuts against the right end face of the first cover plate 50.

[0094] According to an embodiment of the present 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 and the support portion 51 are arranged at intervals. The spaced space between the limiting portion 52 and the support portion 51 forms an insertion portion 501. The first flanging portion 321 of the first end plate 32 is inserted into the insertion portion 501.

[0095] The limiting portion 52 and the support portion 51 are arranged in the front-back direction, which can limit the movement of the first flanging portion 321 in the front-back direction.

[0096] In some embodiments, a first connecting portion 322 may be provided on the first flanging portion 321. The first connecting portion 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.

[0097] 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.

[0098] 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.

[0099] A protruding portion 541 protruding downward is provided at the lower end of the second plate portion 54. Combining Figure 4 , a recessed portion 401 recessed downward is provided at the top of the left side wall of the water receiving tray 40. The protruding portion 541 is inserted into the recessed portion 401.

[0100] The first connecting part 322 on the first flanging part 321 is connected to the convex part 541 by screws.

[0101] The convex part 541 can be triangular. From top to bottom, the cross-section of the convex part 541 gradually decreases. Correspondingly, the concave part 401 is also triangular. From top to bottom, the cross-section of the concave part 401 gradually increases. The triangular structural form facilitates the installation of the convex part 541 into the concave part 401, ensuring the assembly efficiency. In addition, the cooperation between the convex part 541 and the concave part 401 realizes the positioning between the first cover plate 50 and the water receiving tray 40, further improving the assembly efficiency.

[0102] The first connecting part 322 abuts against the front inclined surface of the convex part 541.

[0103] 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, giving full play to the heat exchange performance of the heat exchanger. Compared with the vertical 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%.

[0104] 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 approximately vertically. The first heat exchange part 34 can extend in a wavy shape, which can increase the heat exchange area and improve the heat exchange efficiency.

[0105] The heat exchanger 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.

[0106] The heat exchanger 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.

[0107] 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.

[0108] Referring to Figure 9 and Figure 10 , the middle upper part of the front end of the first end plate 32 extends vertically. In the projection on the plate surface of the first end plate 32, the front contour of the heat exchanger body 31 is located on the first end plate 32.

[0109] 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 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.

[0110] In some embodiments, within the height range where the second heat exchange portion 35 and the first heat exchange portion 34 of the heat exchanger body 31 are located, the first flanging portion 321 extends in the up and down direction. Within the height range where the third heat exchange portion 36 of the heat exchanger body 31 is located, the first flanging portion 321 has an inclination angle substantially the same as that of the third heat exchange portion 36.

[0111] The first flanging portion 321 includes a first flanging part 323. The first flanging part 323 is located in the upper middle part of the first flanging portion 321 and extends in the up and down direction.

[0112] The first flanging portion 321 includes a second flanging part 324. The second flanging part 324 is located on the lower side of the first flanging portion. Similar to the third heat exchange portion 36, the second flanging part 324 extends obliquely downward in the direction away from the air outlet 11 from top to bottom.

[0113] The support portion 51 includes a first support part 511. The first support part 511 abuts against the first flanging part 323.

[0114] The support portion 51 includes a second support part 512. The second support part 512 abuts against the second flanging part 324.

[0115] The support portion 51 can be located at the rear side of the first flanging portion 321, can form a support for the heat exchanger 30, and prevent the heat exchanger 30 from tipping backward.

[0116] 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.

[0117] In this application, both the first flanging part 323 and the support portion 51 are in the shape of a straight plate, which is beneficial to their contact and cooperation. If the first flanging portion 321 generally includes two straight plates forming an included angle corresponding to the outer shape of the heat exchanger body 31, 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 abut against the support portion 51, due to reasons such as assembly error and processing error, it is very easy to have a problem that one straight plate cannot be completely abutted, 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.

[0118] In some embodiments, the length of the limiting portion 52 can be less than that of the supporting portion 61, which can save materials at the limiting portion 52 and reduce costs.

[0119] In the height direction, the limiting portion 52 is arranged corresponding to the upper part of the supporting portion 61 to ensure the limiting effect on the heat exchanger 30.

[0120] On the side (front side) of the limiting portion 52 far from the insertion portion 501, a limiting reinforcing rib 521 is arranged, 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.

[0121] 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.

[0122] 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.

[0123] The front end of the second end plate 33 is provided with a second flanging portion 331 extending to the right. The rear end of the second cover plate 60 is provided with a third flanging portion 61 extending to the right. The third flanging portion 61 abuts against and is connected to the second flanging portion 331.

[0124] The second flanging portion 331 includes a third flanging part 332 located in the upper part. Within the height range where the second heat exchange part 35 is located, the third flanging part 331 extends obliquely downward in a straight line from top to bottom towards the direction close to the air outlet 12.

[0125] The second flanging portion 331 includes a fourth flanging part 334 located below the third flanging part 332. Within the height range where the first heat exchange part 34 is located, the fourth flanging part 334 extends in a straight line in the up and down direction.

[0126] A positioning groove 3321 is provided on the third flanging part 332. The top end of the third flanging portion 61 is provided with a limiting piece 611, and 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 portion 61 and the third flanging part 332.

[0127] The installation of the limiting piece 611 at the positioning groove 3321 can realize the positioning between the third flanging portion 61 and the second flanging portion 331, that is, the positioning between the second cover plate 60 and the second end plate 33 can be realized.

[0128] The third flanging portion 61 and the fourth flanging part 334 are fixedly connected by screws.

[0129] 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.

[0130] According to an embodiment of the present application, continue to refer to Figures 1 to 3 , the housing assembly 10 includes a housing 14. The housing 14 may be a sheet metal part.

[0131] The housing 14 includes a top wall 141, which forms the top structure of the housing 14; a bottom wall 142, which forms the bottom structure of the housing 14; a left side wall 143, which is connected between the left end of the top wall 141 and the left end of the bottom wall 142; a right side wall 144, which is connected between the right end of the top wall 141 and the right end of the bottom wall 142; and a front side wall 145, which is located on the front side of the housing 14. An air outlet 12 is provided on the front side wall 145.

[0132] In some embodiments, the upper parts of the top wall 141, the left side wall 143, and the right side wall 144 may 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.

[0133] The left side wall 143 and the first cover plate 50 are connected by screws.

[0134] 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.

[0135] The second cover plate 60 may be a sheet metal part. The front end of the second cover plate 60 has a fourth flanging portion 64, and the fourth flanging portion 64 abuts against the front side wall 145 and is connected by screws.

[0136] The housing assembly 10 may include a heat insulation layer 15. The material of the heat insulation layer 15 may be heat insulation foam. The heat insulation layer 15 is used to prevent condensation at the top of the air outlet 12.

[0137] In some embodiments, the heat insulation layer 15 is connected to the inner side of the top wall 141. The heat insulation layer 15 is located in the air outlet cavity, and in the front-rear direction, the heat insulation layer 15 extends from the air outlet 12 to the middle partition 13.

[0138] Refer 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.

[0139] 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 upward-opening groove 63 is formed between the second inclined surface 62 and the front side wall 145 of the housing 10.

[0140] At the front top of the second cover plate 60, there is an inclined fifth flanging portion 65. The fifth flanging portion 65 slopes downward in the direction close to the air outlet 12. The top surface of the second flanging portion 65 is the second inclined surface 62.

[0141] Refer to Figure 6 and Figure 8 , at the front bottom of the heat insulation layer 15, there are a first convex portion 151 and a second convex portion 152. The first convex portion 151 is inserted into the first groove 56, and the second convex portion 152 is inserted into the second groove 63. The cooperation 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.

[0142] In this embodiment, the top end of the heat exchanger 30 abuts against the heat insulation layer 15. The top side surfaces of the first cover plate 50 and the second cover plate 60 both abut against the heat insulation layer 15.

[0143] In other embodiments, the structure related to the heat insulation layer 15 can be the same as the corresponding part of the sickle-shaped heat exchanger described below.

[0144] In some embodiments, refer 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 the cuboid-shaped heat exchanger, the sickle-shaped heat exchanger 30 has a larger heat exchange area and higher heat exchange efficiency.

[0145] 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.

[0146] The heat exchanger 30 includes an inclined section part 38. The inclined section part 38 is connected to the lower side of the straight section part 37. The center line of the extending direction of the inclined section part 38 can be composed of multiple straight line segments or curves with different inclination angles.

[0147] 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 main body 31.

[0148] Refer to Figures 16 to 18 , the 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 respectively abut against the housing assembly 10 to form a contact seal. Thus, the left side space of the first end plate 32 is closed, reducing or even avoiding the air flow from flowing from the left side space of the first end plate 32 to the air outlet 12.

[0149] Connect a second cover plate 60 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 and the front side 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 the space on the right side of the second end plate 33 to the air outlet 12.

[0150] Refer to Figure 19 , Figure 20 , the support portion 51 can be located at 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.

[0151] 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.

[0152] On the side (front side) of the support portion 51 far from the insertion portion 501, a plurality of spaced-apart support reinforcing ribs 513 are provided.

[0153] The support reinforcing ribs 513 can increase the structural strength of the support portion 51 and prevent problems such as deformation and fracture of the support portion 51 under the action of the heat exchanger 30.

[0154] The limiting portion 52 is provided at the rear side of the first flanging portion 321 and is used to limit the backward movement of the heat exchanger 30.

[0155] 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.

[0156] 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.

[0157] 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 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.

[0158] In some embodiments, refer 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.

[0159] The rear end of the left side surface of the second cover plate 60 can be abutted against the front end of the right side surface of the second end plate 33.

[0160] 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.

[0161] Specifically, there are three first connecting parts 335 arranged at intervals, which can ensure the firm connection between the second end plate 33 and the second cover plate 60.

[0162] In other embodiments, the connection structure between the second end plate 33 and the second cover plate 60 may be the same as that of the above-mentioned "W"-shaped heat exchanger part.

[0163] The first end plate 32, the second end plate 33 and / or the second cover plate 60 may be sheet metal parts, and the flanging parts thereon may be formed by bending. The first cover plate 50 may be a plastic part, and the structure thereon is formed by injection molding.

[0164] In some embodiments, referring to Figure 22 , a first inclined surface 55 is provided at the top of the front end of the first cover plate 50, 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.

[0165] A second inclined surface 62 is provided at the top of the front end of the second cover plate 60, 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.

[0166] Referring to Figure 16 and Figure 18 , the heat insulation layer 15 is in a strip shape and is only provided at the front top corner of the housing 14.

[0167] First convex parts 151 and second convex parts 152 are respectively provided at the lower parts on the left and right sides of the heat insulation layer 15. The first convex part 151 is adapted to be within the first groove 56, and the second convex part 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.

[0168] 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.

[0169] The front side surface at the top of the first flanging part 321 may abut against the rear end surface of the heat insulation layer 15.

[0170] As described above, in the embodiments of the present application, a first cover plate 50 is connected to the left side of the first end plate 32. By the upper side surface and the front side surface of the first cover plate 50 respectively abutting against the housing assembly 10, the left side space of the first end plate 32 is closed to prevent the air flow from flowing from the left side space of the first end plate 32 to the air outlet 12. A second cover plate 60 is connected to the front side of the second end plate 33. By the upper side surface and the front side surface of the second cover plate 60 respectively abutting against the housing assembly 10, the right side space of the second end plate 33 is closed to prevent 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.

[0171] In addition, a support portion 51 is provided on the first cover plate 50 and abuts against the first flanging portion 321 of the first end plate 32. Since the gap between the first flanging portion 321 and the support portion 51 is not the same 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.

[0172] In addition, the support portion 51 can support the heat exchanger 30 to prevent the heat exchanger 30 from tipping over.

[0173] 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. 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.

[0174] 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.

[0175] 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 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.

[0176] In addition, for the "W"-shaped 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 the air flow leaking from the first flanging portion 321.

[0177] 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.

[0178] For the sake of convenience 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 modified embodiments suitable for specific uses.

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, correspondingly arranged in the housing assembly corresponding to the air outlet, for exchanging heat with the air passing through it. The heat exchanger has a first end plate and a second end plate at both ends thereof, 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 abutted against the housing assembly. The first cover plate is provided with: A support portion, which protrudes towards the first end plate direction, and the support portion abuts against 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 abutted against the housing assembly.

2. The indoor air conditioner according to claim 1, wherein The heat exchanger includes: A first heat exchange part; A second heat exchange part, which obliquely extends upwards away from the air outlet direction from the upper end of the first heat exchange part; A third heat exchange part, which obliquely extends downwards away from the air outlet direction from the lower end of the first heat exchange part; The first flanging portion vertically extends within the height range where the first heat exchange part and the second heat exchange part are located.

3. The air conditioner indoor unit according to claim 2, characterized in that, The first flanging portion includes: A first flanging part, which is located within the height range where the first heat exchange part and the second heat exchange part are located; A second flanging part, located on the lower side of the first flanging portion, and the second flanging portion is inclined with the third heat exchange part; The support portion includes: A first support part, which abuts against the first flanging part; A second support part, which is connected to the first support part and abuts against the second flanging part.

4. The air conditioner indoor unit according to claim 1, characterized in that, A limiting portion is provided on the first cover plate, and the space between the limiting portion and the support portion forms a plug-in portion, and the first flanging portion is plugged into the plug-in portion.

5. The air conditioner indoor unit according to claim 4, wherein The length of the limiting portion is less than that of the support portion, and the limiting portion forms a limit on the upper part of the first flanging portion.

6. The indoor air conditioner according to claim 1, characterized in that, Also included: A water receiving tray, arranged 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 part, located on the lateral outside of the water receiving tray; A second plate part, connected to the first plate part and located on the upper side of the water receiving tray. A protruding portion extending downwards is provided on the second plate part, and the protruding portion is plugged into the recessed portion; A first connecting portion extending towards the first cover plate direction is provided on the first flanging portion, and the first connecting portion is connected to the protruding portion through a fastener.

7. The indoor air conditioner according to claim 1, characterized in that, A second flanging portion is provided at the front end of the second end plate, and a third flanging portion is provided at the rear end of the second cover plate, and the third flanging portion abuts against the second flanging portion.

8. 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, 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.

9. The air conditioner indoor unit according to claim 1, characterized in that, Also included: The water receiving tray is provided below the heat exchanger; The water receiving tray includes: A water collecting area provided 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 provided in the water receiving tray, and the partition part separates the water collecting area and the drainage area; The second cover plate abuts against the upper end of the partition part.

10. An air conditioner indoor unit, characterized in that, It includes: A housing assembly provided with an air outlet, and it is defined that the air outlet is located at the front end of the housing assembly; A heat exchanger corresponding to the air outlet and provided in the housing assembly for exchanging heat with the air passing through it, and the heat exchanger has a first end plate and a second end plate at both ends thereof; A first cover plate in contact connection with the first end plate; the upper end and the front end of the first cover plate are respectively in abutment connection with the housing assembly; A second cover plate in contact connection with the second end plate, and the upper end and the front end of the second cover plate are respectively in abutment connection with the housing assembly.

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