Air conditioner indoor unit and air conditioner

Abstract

The utility model provides an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a machine shell, an air duct component, a cross-flow fan, an evaporator and an electric appliance junction box. An air inlet is formed in the upper portion of the front side of the machine shell, and an air outlet is formed in the lower portion of the front side of the machine shell. The air duct component is arranged in the machine shell, and an air supply duct with the tail end extending to the air outlet is defined. The cross-flow fan is arranged at the starting end of the air supply duct and used for promoting air to enter the air conditioner indoor unit from the air inlet and be blown out from the air outlet along the air supply duct. The evaporator is arranged between the cross-flow fan and the air inlet. The electric appliance junction box is arranged in the machine shell and located above the evaporator. According to the indoor unit of the air conditioner, the electric appliance junction box is arranged in the space above the evaporator, so that the electric appliance junction box does not occupy extra transverse space of the indoor unit of the air conditioner, and the problem that the transverse length of the indoor unit of the air conditioner is increased by the electric appliance junction box is solved.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to an indoor unit of an air conditioner and an air conditioner. Background Art

[0002] Air conditioners generally consist of an indoor unit and an outdoor unit. The indoor unit is powered by a three-prong power cord connected to an indoor outlet. The outdoor unit, on the other hand, is typically connected to the indoor unit via an interconnecting cable, rather than a separate three-prong power cord connected to an indoor outlet. Therefore, the indoor unit is typically equipped with an electrical junction box, which simultaneously connects to the three-prong power cord, the interconnecting cable connecting the outdoor unit, and the weak current cables connecting functional modules, including the display module.

[0003] However, the existing air conditioner indoor unit usually sets the electrical junction box on one lateral side of the air conditioner indoor unit, which increases the lateral length of the air conditioner indoor unit, not only making the appearance lengthy, but also affecting the selection of the installation location of the air conditioner indoor unit. Utility Model Content

[0004] One aspect of the utility model aims to solve the problem that an electrical appliance junction box increases the horizontal length of an indoor unit of an air conditioner.

[0005] A further object of one aspect of the present invention is to ensure the air intake effect of the indoor unit of the air conditioner.

[0006] Another object of the present invention is to provide an air conditioner that solves the above-mentioned problems.

[0007] According to one aspect of the present invention, the present invention provides an air conditioner indoor unit, which includes a casing, an air duct component, a cross-flow fan, an evaporator, and an electrical junction box.

[0008] An air inlet is provided at the upper front portion of the casing, and an air outlet is provided at the lower front portion of the casing.

[0009] The air duct component is arranged in the casing, defining an air supply duct with an end extending to the air outlet.

[0010] The cross-flow fan is arranged at the beginning of the air supply duct, and is used to force air into the indoor unit of the air conditioner from the air inlet and blown out from the air outlet along the air supply duct.

[0011] The evaporator is arranged between the cross-flow fan and the air inlet.

[0012] The electrical junction box is arranged in the casing and is located above the evaporator.

[0013] Optionally, the electrical appliance junction box is in a rectangular parallelepiped shape and is arranged flat in the casing; the top surface of the electrical appliance junction box is arranged against the top surface of the casing.

[0014] Optionally, the electrical junction box and the evaporator are spaced apart from each other.

[0015] Optionally, the ratio of the upper and lower spacing heights between the electrical junction box and the evaporator to the upper and lower spacing heights between the evaporator and the top surface of the casing is greater than or equal to 1:4.

[0016] Optionally, the ratio of the upper and lower spacing heights between the upper side of the air inlet and the evaporator to the upper and lower spacing heights between the evaporator and the top surface of the casing is greater than or equal to 1:2.

[0017] Optionally, the casing includes a side panel portion forming at least a portion of the upper side wall, lower side wall and two lateral side walls of the air conditioner indoor unit, and a front panel portion arranged on the front side of the side panel portion and forming an air inlet and an air outlet.

[0018] The front panel portion is formed with an operation port at a position facing the front and rear of the electrical appliance junction box.

[0019] Optionally, the ratio of the lateral distance between the electrical appliance junction box and any side of the air inlet to the lateral width of the air inlet is greater than or equal to 1:4.

[0020] Optionally, the air conditioner indoor unit further includes: an air inlet baffle.

[0021] The air inlet baffle is rotatably arranged at the air inlet for opening and closing the air inlet; and the rotation axis of the air inlet baffle is located on a side close to the air outlet.

[0022] Optionally, the air conditioner indoor unit further includes: an air inlet grille.

[0023] The air inlet grille is arranged at the air inlet; the air inlet grille includes a plurality of grille plates parallel to the length direction of the air outlet and parallel to each other, and each grille plate has an inclined surface facing forward and downward.

[0024] According to another aspect of the present invention, an air conditioner is provided, which includes any one of the above-mentioned air conditioner indoor units.

[0025] The air conditioner indoor unit of the present invention includes a casing, an air duct component, a cross-flow fan, an evaporator and an electrical junction box. An air inlet is provided at the upper front portion of the casing, and an air outlet is provided at the lower front portion of the casing. The air duct component is arranged in the casing, defining an air supply duct whose end extends to the air outlet. The cross-flow fan is arranged at the beginning of the air supply duct, and is used to force air into the air conditioner indoor unit from the air inlet and blown out from the air outlet along the air supply duct. The evaporator is arranged between the cross-flow fan and the air inlet. The electrical junction box is arranged in the casing and is located above the evaporator. The air conditioner indoor unit of the present invention solves the problem that the electrical junction box increases the lateral length of the air conditioner indoor unit by arranging the electrical junction box in the space above the evaporator, so that the electrical junction box does not occupy additional lateral space of the air conditioner indoor unit.

[0026] Furthermore, the present invention also improves the setting position of the electrical junction box to match the air inlet on the front side of the air conditioner indoor unit, thereby ensuring the air intake effect of the air conditioner indoor unit.

[0027] Based on the following detailed description of some specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0029] Figure 1 is a schematic diagram of an air conditioner indoor unit according to one embodiment of the present utility model;

[0030] Figure 2 yes Figure 1 A schematic front view of an indoor unit of an air conditioner is shown;

[0031] Figure 3 yes Figure 2 A schematic cross-sectional view of the indoor unit of the air conditioner shown in FIG.

[0032] Figure 4 yes Figure 1 Schematic diagram of the electrical junction box of the indoor unit of the air conditioner shown;

[0033] Figure 5 yes Figure 1 A schematic exploded view of the electrical junction box of the indoor unit of the air conditioner is shown;

[0034] Figure 6 is a schematic diagram of an air conditioner indoor unit according to another embodiment of the present utility model;

[0035] Figure 7 is a schematic diagram of an air conditioner indoor unit according to another embodiment of the present utility model;

[0036] Figure 8 Schematic diagram of an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] The terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, the term "first," "second," etc., may explicitly or implicitly include at least one of the features, or one or more of the features.

[0039] In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically limited. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0040] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," "coupled," and the like should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] Furthermore, in the description of the present invention, a first feature being “above” or “below” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0042] That is, in the description of the present utility model, "above," "above," and "above" a first feature of a second feature include the first feature being directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "below," "below," or "below" a first feature of a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, devices, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, devices, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0044] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the description of the embodiments of the present invention have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0045] Figure 1 is a schematic diagram of an air conditioner indoor unit 20 according to one embodiment of the present utility model; Figure 2 yes Figure 1 A schematic front view of the air conditioner indoor unit 20 is shown; Figure 3 yes Figure 2 The schematic cross-sectional view of the air conditioner indoor unit 20 is shown at position AA.

[0046] refer to Figure 1 and Figure 3 As shown, the present invention provides an air conditioner indoor unit 20, which includes a housing 22, a duct member 24, a crossflow fan 26, an evaporator 28, and an electrical junction box 30. An air inlet 22A is defined in the upper front portion of the housing 22, and an air outlet 22B is defined in the lower front portion of the housing 22. The duct member 24 is disposed within the housing 22, defining an air supply duct 24A that extends to the air outlet 22B. The crossflow fan 26 is disposed at the beginning of the air supply duct 24A and is configured to force air into the air conditioner indoor unit 20 through the air inlet 22A and out through the air outlet 22B along the air supply duct 24A. The evaporator 28 is disposed between the crossflow fan 26 and the air inlet 22A. The electrical junction box 30 is disposed within the housing 22 and above the evaporator 28.

[0047] The air conditioner indoor unit 20 of this embodiment disposes the electrical junction box 30 in the space above the evaporator 28, so that the electrical junction box 30 does not occupy additional lateral space within the air conditioner indoor unit 20, thereby resolving the issue of the electrical junction box 30 increasing the lateral length of the air conditioner indoor unit 20. Furthermore, since the air inlet 22A of the air conditioner indoor unit 20 of this embodiment is located on the front side of the housing 22, the incoming air primarily flows through the portion of the evaporator 28 facing forwardly toward the crossflow fan 26. Therefore, the electrical junction box 30 disposed above the evaporator 28 has minimal impact on the air intake.

[0048] Figure 4 yes Figure 1 Schematic diagram of the electrical junction box 30 of the air conditioner indoor unit 20 is shown.

[0049] In some optional embodiments, the electrical appliance junction box 30 is in a rectangular parallelepiped shape and is flatly disposed inside the housing 22 ; the top surface of the electrical appliance junction box 30 is disposed against the top surface of the housing 22 .

[0050] refer to Figure 4 As shown, the air conditioner indoor unit 20 of this embodiment is provided with an electrical junction box 30 in the shape of a flat rectangular parallelepiped, which has a relatively large cross-sectional area and a small longitudinal thickness. Therefore, the electrical junction box 30 can be set by utilizing the space reserved between the evaporator 28 and the top surface of the casing 22 of the air conditioner indoor unit 20 for the air flow to flow backward to the rear of the evaporator 28.

[0051] refer to Figure 1 and Figure 2 As shown, the lateral width of the electrical junction box 30 is typically significantly smaller than the lateral width of the air inlet 22A. Therefore, even if the electrical junction box 30 is provided, airflow can flow backward from both lateral sides of the electrical junction box 30 to the rear of the evaporator 28 .

[0052] refer to Figure 2 and Figure 3 As shown, in some optional embodiments, the electrical junction box 30 and the evaporator 28 are spaced apart from each other.

[0053] In order to further ensure the air intake effect of the air conditioner indoor unit 20, this embodiment is particularly provided with a gap between the electrical junction box 30 and the evaporator 28, so that the air flow can also flow backward from between the electrical junction box 30 and the evaporator 28 to the rear of the evaporator 28, thereby making the air flow rate sucked in by the cross-flow fan 26 more uniform.

[0054] In some optional embodiments, the ratio of the upper and lower spacing height H2 between the electrical junction box 30 and the evaporator 28 to the upper and lower spacing height H1 between the evaporator 28 and the top surface of the casing 22 is greater than or equal to 1:4.

[0055] refer to Figure 3 As shown, the vertical spacing height H2 between the electrical junction box 30 and the evaporator 28 refers to the vertical spacing height between the bottom surface of the electrical junction box 30 and the top of the evaporator 28, and the vertical spacing height H1 between the evaporator 28 and the top surface of the casing 22 refers to the vertical spacing height between the top of the evaporator 28 and the top surface of the casing 22. It should be noted that the top surface of the casing 22 referred to here refers to the inner side surface of the top wall of the casing 22, that is, the surface facing the evaporator 28 or abutting the electrical junction box 30.

[0056] The air conditioner indoor unit 20 of this embodiment ensures that there is a sufficiently wide gap between the electrical junction box 30 and the evaporator 28 to ensure that the air intake at the rear of the evaporator 28 directly facing the electrical junction box 30 is sufficient, thereby making the air flow rate drawn by the crossflow fan 26 more uniform.

[0057] In some optional embodiments, the ratio of the upper and lower spacing height H3 between the upper side of the air inlet 22A and the evaporator 28 to the upper and lower spacing height H1 between the evaporator 28 and the top surface of the casing 22 is greater than or equal to 1:2.

[0058] refer to Figure 3 As shown, the air conditioner indoor unit 20 of this embodiment also ensures a sufficiently wide gap between the upper side of the air inlet 22A and the top of the evaporator 28 to ensure that sufficient airflow can flow backward from the top of the evaporator 28 to the rear of the evaporator 28. When the air flow entering the air inlet 22A is sufficient, the airflow flowing backward from both sides of the electrical junction box 30 will also flow downward from the electrical junction box 30 upon reaching the rear of the evaporator 28 to be sucked in by the crossflow fan 26.

[0059] In some optional embodiments, the housing 22 includes side panels 222 that form at least a portion of the upper sidewall, lower sidewall, and two lateral walls of the air conditioner indoor unit 20, and a front panel 224 disposed on the front side of the side panels 222 and forming an air inlet 22A and an air outlet 22B. The front panel 224 has an operation port 22C formed in a position directly opposite the front and rear sides of the electrical junction box 30.

[0060] refer to Figure 1 As shown, the housing 22 of this embodiment comprises side panels 222 and a front panel 224. The air inlet 22A and air outlet 22B of the air conditioner indoor unit 20 are both located on the front panel 224. Furthermore, to facilitate access to the electrical junction box 30 by maintenance personnel, the front panel 224 is provided with an operating port 22C at a position directly opposite the electrical junction box 30.

[0061] refer to Figure 2As shown, the operation port 22C almost completely covers the electrical junction box 30 in the front-to-back direction, so that maintenance personnel can easily perform wiring, maintenance, etc. on the electrical junction box 30 from the operation port 22C. Because the operation port 22C and the air inlet 22A also pass through the front panel portion 224, part of the air flow can also enter the air conditioner indoor unit 20 through the operation port 22C. Figure 2 As can be seen from the figure, the air inlet 22A can be divided into multiple grid-like blocks, but the operation port 22C is a complete one facing the electrical junction box 30 from front to back.

[0062] Figure 5 yes Figure 1 Schematic exploded view of the electrical junction box 30 of the air conditioner indoor unit 20 is shown.

[0063] refer to Figure 5 As shown, the electrical junction box 30 may include a computer board box 302, a first wire fixing plate 304, a second wire fixing plate 306, and a cover 308. The computer board box 302 is fixed to the housing 22 and is used to accommodate the computer board. The first wire fixing plate 304, the second wire fixing plate 306, and the cover 308 are arranged in sequence to separate the two incoming wiring areas, facilitating separate access for strong and weak power. When maintenance personnel need to perform wiring, maintenance, or other operations on the electrical junction box 30, they can remove the cover 308, the second wire fixing plate 306, and the first wire fixing plate 304 in sequence from the access port 22C and operate in the corresponding areas that are no longer obstructed.

[0064] In some optional embodiments, the ratio of the lateral distance D2 or D3 between the electrical appliance junction box 30 and any side of the air inlet 22A to the lateral width D1 of the air inlet 22A is greater than or equal to 1:4.

[0065] refer to Figure 2 As shown, this embodiment also limits the lateral position of the electrical junction box 30, positioning it near the transverse center of the air inlet 22A. The airflow from the left and right sides of the electrical junction box 30 toward the rear of the evaporator 28 is relatively uniform, and air can flow from the left and right sides of the electrical junction box 30 toward the rear lower side of the electrical junction box 30 to replenish the air drawn into the rear portion of the evaporator 28 that is directly opposite the electrical junction box 30.

[0066] Figure 6 FIG. 2 is a schematic diagram of an air conditioner indoor unit 20 according to another embodiment of the present invention.

[0067] In some optional embodiments, the air conditioner indoor unit 20 further includes an air inlet baffle 32. The air inlet baffle 32 is rotatably disposed at the air inlet 22A for opening and closing the air inlet 22A; and the rotation axis of the air inlet baffle 32 is located on a side close to the air outlet 22B.

[0068] refer to Figure 6 As shown, the air conditioner indoor unit 20 of this embodiment is further provided with an air inlet baffle 32 that can rotate to open and close the air inlet 22A in order to close the air inlet 22A when the air conditioner indoor unit 20 is not in operation to prevent dust from falling in. When the air inlet baffle 32 closes the air inlet 22A, it serves as part of the front side of the air conditioner indoor unit 20 and can also improve the neatness and aesthetics of the air conditioner indoor unit 20.

[0069] Because the air inlet 22A and the air outlet 22B of the air conditioner indoor unit 20 of this embodiment are both arranged on the front side of the housing 22, in order to reduce the air flow from leaving the air outlet 22B and being directly sucked into the air conditioner indoor unit 20 again from the air inlet 22A, this embodiment also arranges the rotation axis of the air inlet baffle 32 on the side close to the air outlet 22B, such as Figure 6 As shown, when the air inlet baffle 32 rotates and opens the air inlet 22A, the air inlet baffle 32 can separate the air inlet 22A from the air outlet 22B, so that the air inlet 22A only draws air from an area far away from the air outlet 22B.

[0070] Figure 7 FIG. 2 is a schematic diagram of an air conditioner indoor unit 20 according to another embodiment of the present invention.

[0071] In some optional embodiments, the air conditioner indoor unit 20 further includes an air inlet grille 32. The air inlet grille 32 is provided at the air inlet 22A; the air inlet grille 32 includes a plurality of grille plates parallel to the length direction of the air outlet 22B and parallel to each other, each grille plate having an inclined surface facing forward and downward.

[0072] refer to Figure 7 As shown, the air conditioner indoor unit 20 of this embodiment is provided with an air inlet grille 32 to shield the air inlet 22A to prevent foreign matter from falling into the air inlet 22A. The parallel grille plates on the air inlet grille 32 are spaced apart to allow air to pass through the air inlet grille 32 and through the air inlet 22A. Furthermore, each grille plate has an inclined surface facing forward and downward, so that the gaps between adjacent grille plates extend downwardly from front to rear. This causes the airflow formed at the air inlet 22A to flow downwardly from the outside to the inside, thereby increasing the air drawn into the air inlet 22A from the upper side, i.e., the side away from the air outlet 22B, and reducing the air drawn into the air inlet 22A from the side closer to the air outlet 22B.

[0073] In some optional embodiments, reference Figure 3 As shown, the air conditioner indoor unit 20 may further include an air outlet baffle 34. The air outlet baffle 34 is disposed at the air outlet 22B for opening and closing the air outlet 22B. The rotation axis of the air outlet baffle 34 is located on a side close to the air inlet 22A.

[0074] Since the air inlet 22A and the air outlet 22B of the air conditioner indoor unit 20 of this embodiment are located on the same side, in order to reduce the amount of outlet air flow directly being sucked back into the air conditioner indoor unit 20 from the air inlet 22A after leaving the air outlet 22B, this embodiment sets the rotation axis of the air outlet baffle 34 on the side close to the air inlet 22A, so that when the air outlet baffle 34 rotates and opens the air outlet 22B, the air inlet 22A and the air outlet 22B can be separated, and the outlet air flow flowing in the direction close to the air inlet 22A can be reduced.

[0075] In some optional embodiments, reference Figure 3 As shown, the air conditioner indoor unit 20 may further include an air guide plate 36. The air guide plate 36 is rotatably disposed in the air supply duct 24A to change the left-right flow direction of the outlet air flow.

[0076] Figure 8 1 is a schematic diagram of an air conditioner 10 according to an embodiment of the present invention.

[0077] The air conditioner 10 of this embodiment includes an indoor unit 20, an outdoor unit, and a refrigerant pipeline connecting the two. The compressor, condenser, and throttling device in the outdoor unit are connected to the evaporator 28 in the indoor unit 20 via the refrigerant pipeline. Together with other necessary components, they constitute the refrigeration cycle system of the air conditioner 10. The indoor unit 20 can both cool and blow cooling air, and also has a heating function and blows heating air.

[0078] The air conditioner indoor unit 20 of this embodiment serves as the indoor part of the air conditioner. In addition to the cooling and heating functions, it can also have additional functions such as dehumidification, humidification, air purification, and introduction of fresh air to the indoor environment.

[0079] The air conditioner indoor unit 20 of this embodiment has the air inlet 22A and the air outlet 22B both arranged on the front surface of the shell, so that the air conditioner indoor unit 20 takes in and out air from the front at the same time. Therefore, it is particularly suitable for being embedded in a cabinet for use, that is, used as an embedded air conditioner indoor unit 20.

[0080] In the embodiment where the air conditioner 10 is a built-in air conditioner 10, the cabinet used to house the air conditioner indoor unit 20 can be any type of cabinet and can be used for storage. The present invention does not limit the specific use of the cabinet. For example, the cabinet can be used for household purposes, specifically in a kitchen, bathroom, living room, or bedroom. For example, the cabinet can be placed in a kitchen to house the air conditioner indoor unit 20.

[0081] However, the air conditioner 10 of this embodiment is not limited to the embedded air conditioner 10. The air conditioner indoor unit 20 can be the indoor part of the embedded air conditioner 10 installed in various cabinets or the indoor terminal model of the central air conditioner, or it can be the indoor part of the wall-mounted air conditioner 10 or other air conditioner indoor unit 20, which is not limited here.

[0082] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention can be directly determined or deduced from the contents disclosed herein without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. An air conditioner indoor unit, characterized in that include: A housing, wherein an air inlet is provided at an upper front portion of the housing, and an air outlet is provided at a lower front portion of the housing; an air duct component, disposed in the housing, defining an air supply duct whose terminal end extends to the air outlet; a cross-flow fan, disposed at the beginning of the air supply duct, for causing air to enter the air conditioner indoor unit from the air inlet and be blown out from the air outlet along the air supply duct; an evaporator, disposed between the crossflow fan and the air inlet; The electrical junction box is arranged in the casing and located above the evaporator.

2. The air conditioner indoor unit according to claim 1, characterized in that: The electrical appliance junction box is in a rectangular parallelepiped shape and is arranged flatly in the casing; the top surface of the electrical appliance junction box is arranged against the top surface of the casing.

3. The air conditioner indoor unit according to claim 2, characterized in that: The electrical appliance junction box and the evaporator are spaced apart from each other.

4. The air conditioner indoor unit according to claim 3, characterized in that: The ratio of the upper and lower spacing heights between the electrical junction box and the evaporator to the upper and lower spacing heights between the evaporator and the top surface of the casing is greater than or equal to 1:

4.

5. The air conditioner indoor unit according to claim 1, characterized in that: The ratio of the upper and lower spacing heights between the upper side of the air inlet and the evaporator to the upper and lower spacing heights between the evaporator and the top surface of the casing is greater than or equal to 1:

2.

6. The air conditioner indoor unit according to claim 1, characterized in that: The housing includes a side panel portion forming at least a portion of an upper side wall, a lower side wall, and two lateral side walls of the indoor unit of the air conditioner, and a front panel portion provided on a front side of the side panel portion and forming the air inlet and the air outlet; The front panel portion is formed with an operation port at a position facing the front and rear of the electrical appliance junction box.

7. The air conditioner indoor unit according to claim 6, characterized in that: The ratio of the lateral distance between the electrical appliance junction box and any side of the air inlet to the lateral width of the air inlet is greater than or equal to 1:

4.

8. The air conditioner indoor unit according to claim 1, characterized in that Also includes: an air inlet baffle, rotatably disposed at the air inlet, for opening and closing the air inlet; and The rotation axis of the air inlet baffle is located on a side close to the air outlet.

9. The air conditioner indoor unit according to claim 1, characterized in that Also includes: An air inlet grille is arranged at the air inlet; the air inlet grille includes a plurality of grille plates parallel to the length direction of the air outlet and parallel to each other, and each of the grille plates has an inclined surface facing forward and downward.

10. An air conditioner, characterized in that include: An air conditioner indoor unit according to any one of claims 1 to 9.

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