Indoor unit of air conditioner

Abstract

An indoor unit of an air conditioner can restrain condensed water generated by refrigerant piping from remaining between a drain pan and a bottom plate. The indoor unit of the air conditioner comprises a shell, a heat exchanger and a fan, wherein the shell is provided with a fan section and a heat exchanger section; the fan is arranged on the fan section; the heat exchanger is arranged on the heat exchanger section, the heat exchanger section is provided with a side plate, a heat insulation part is arranged on the inner side of the side plate, a drainage disc is arranged on the lower side of the heat exchanger, a water leakage prevention structure is arranged on the inner side of the side plate, and the water leakage prevention structure and the heat insulation part are integrally or separately formed. The water leakage prevention structure is provided with a first bottom wall and a first side wall, at least one part of the first bottom wall directly abuts against the top of the side wall of the drainage disc or abuts against the top of the side wall of the drainage disc through a sealing piece, the first side wall is far away from the outer surface of the side plate, and the projection of the lowest end of the first side wall falls into the inner side of the drainage disc.

Description

Technical Field

[0001] The utility model relates to an indoor unit of an air conditioner. Background Art

[0002] In the past, there was an air conditioner indoor unit, comprising: a shell having a fan section and a heat exchanger section; a fan, which is arranged in the fan section; and a heat exchanger, which is arranged in the heat exchanger section, wherein the heat exchanger section has a side plate for passing a refrigerant pipe connected to an air conditioner outdoor unit, and a drain pan is arranged at the lower side of the heat exchanger.

[0003] However, in practice, condensed water generated by the refrigerant piping and diversion components located in the heat exchanger section may leak out from the gap between the side panel and the drain pan along the inner wall of the side panel. After the air conditioner indoor unit stops operating, condensed water remains between the drain pan and the bottom plate of the shell. In severe cases, it may cause problems such as water leakage in the air conditioner indoor unit. Utility Model Content

[0004] The utility model is completed in view of the above problems, and aims to provide an air-conditioning indoor unit, which can suppress the condensed water generated by the refrigerant piping from remaining between the drain pan and the bottom plate.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an air-conditioning indoor unit, comprising: a shell, the shell having a fan section and a heat exchanger section; a fan, the fan is arranged in the fan section; and a heat exchanger, the heat exchanger is arranged in the heat exchanger section, the heat exchanger section has a side plate, the inner side of the side plate is provided with a heat insulation part, and a drain pan is provided on the lower side of the heat exchanger, wherein a water leakage prevention structure formed integrally or separately with the heat insulation part is provided on the inner side of the side plate, the water leakage prevention structure has a first bottom wall and a first side wall, at least a portion of the first bottom wall is directly abutted against the top of the side wall of the drain pan or abutted against it through a seal, the first side wall is away from the outer surface of the side plate, and the projection of the lowermost end falls into the inner side of the drain pan.

[0006] According to the air-conditioning indoor unit of the utility model, a water-leakage-proof structure formed integrally or separately with the insulation part is provided on the inner side of the side panel, and the water-leakage-proof structure has a first bottom wall and a first side wall, and at least a portion of the first bottom wall is directly in contact with the top of the drain pan side wall or in contact with the seal through the first side wall, and the first side wall is away from the outer surface of the side panel, and the projection of the lowermost end falls into the inner side of the drain pan. Therefore, the first side wall of the water-leakage-proof structure can be used to guide condensed water dripping from the refrigerant piping, etc. toward the inner side of the drain pan, thereby preventing the condensed water from flowing out through the gap between the side panel and the drain pan and remaining between the drain pan and the bottom plate, thereby preventing the condensed water from leaking to the outside of the air-conditioning indoor unit.

[0007] In addition, in the air-conditioning indoor unit of the utility model, the water leakage prevention structure is preferably a convex rib protruding toward the side opposite to the outer surface of the side plate, and has a first water guide surface facing upward, which is inclined downward toward the side opposite to the outer surface of the side plate.

[0008] According to the air-conditioning indoor unit of the utility model, the water leakage prevention structure is a convex rib protruding toward the side opposite to the outer surface of the side plate, and has a first water guide surface facing upward, and the first water guide surface is inclined downward toward the side opposite to the outer surface of the side plate. Therefore, the water leakage prevention structure can be formed with less material, thereby suppressing the manufacturing cost, and the first water guide surface can be used to smoothly guide the condensed water dripping from the refrigerant piping, etc. into the drain pan and be smoothly discharged from the drain pan.

[0009] Furthermore, in the air conditioning indoor unit of the present invention, it is preferred that at least one of the first bottom wall and the top of the drain pan side wall is provided with an inclined surface which is inclined downward toward a side opposite to the outer surface of the side plate.

[0010] Here, the inclined surface may be a plane, an arc surface, or a combination of a plane and an arc surface.

[0011] According to the air-conditioning indoor unit of the utility model, at least one of the tops of the first bottom wall and the drain pan side wall is provided with an inclined surface, which is inclined downward toward the side opposite to the outer surface of the side plate. Therefore, it can further prevent condensed water from flowing out through the gap between the side plate and the drain pan and remaining between the drain pan and the bottom plate.

[0012] Furthermore, in the air conditioner indoor unit of the present invention, the heat exchanger section is preferably provided with at least a portion of a refrigerant pipe located between the heat exchanger and the side plate, and the water leakage prevention structure is formed at least below at least a portion of the refrigerant pipe.

[0013] According to the air conditioner indoor unit of the utility model, the heat exchanger section is provided with at least a portion of the refrigerant piping located between the heat exchanger and the side plate, and the water leakage prevention structure is formed at least below at least a portion of the refrigerant piping. Therefore, it is possible to more effectively suppress condensed water dripping from the refrigerant piping from flowing out through the gap between the side plate and the drain pan and remaining between the drain pan and the bottom plate.

[0014] Furthermore, in the air-conditioning indoor unit of the present invention, the heat exchanger is preferably inclined relative to a horizontal plane, and when the angle between the heat exchanger and the horizontal plane is α, the following relationship is satisfied: α≥37° and ≤41°.

[0015] According to the air-conditioning indoor unit of the utility model, the heat exchanger is inclined relative to the horizontal plane. When the angle between the heat exchanger and the horizontal plane is α, the following relationship is satisfied: α≥37° and ≤41°. Therefore, while ensuring the thinness of the air-conditioning indoor unit, the heat exchange performance and uniform airflow can be guaranteed.

[0016] Furthermore, in the air conditioning indoor unit of the present invention, it is preferred that α is 39°.

[0017] According to the air-conditioning indoor unit of the utility model, α is 39°, so while ensuring the thinness of the air-conditioning indoor unit, the heat exchange performance and the uniformity of the air flow can be better guaranteed.

[0018] Furthermore, in the air conditioner indoor unit of the present invention, the drain pan preferably has a natural drain port and a drain pump setting area, a drain pump is provided in the drain pump setting area, and the natural drain port and the drain pump setting area are provided on the secondary side of the heat exchanger.

[0019] Here, the “secondary side of the heat exchanger” refers to the downstream side of the heat exchanger on the flow path of the airflow generated by the fan.

[0020] According to the air conditioner indoor unit of the utility model, the drain pan has a natural drain outlet and a drain pump setting area, a drain pump is arranged in the drain pump setting area, the natural drain outlet and the drain pump setting area are arranged on the secondary side of the heat exchanger, therefore, the natural drainage conditions can be met, at the same time, the drain pump is arranged on the secondary side of the heat exchanger, which is suitable for occasions where a drain pump is selected, and is convenient for post-installation operations, and the natural drain outlet is close to the drain pump, which is convenient for cleaning the drain pump.

[0021] Furthermore, in the air conditioner indoor unit of the present invention, it is preferred that a groove recessed upward is provided on the bottom surface of the drain pan.

[0022] According to the air conditioner indoor unit of the utility model, a groove recessed upward is provided on the bottom surface of the drain pan, thereby saving materials and reducing the contact area with the bottom plate of the shell, avoiding or suppressing abnormal sounds generated when contacting the bottom plate.

[0023] In addition, in the air-conditioning indoor unit of the utility model, it is preferred that the air-conditioning indoor unit also includes a refrigerant diversion component, which distributes refrigerant to the heat exchanger, and the heat exchanger is provided with one and the refrigerant diversion component is provided with two, or the heat exchanger is provided with multiple and the refrigerant diversion component is provided with multiple corresponding to the multiple heat exchangers.

[0024] According to the air-conditioning indoor unit of the utility model, the air-conditioning indoor unit also includes a refrigerant diversion component, which distributes refrigerant to the heat exchanger. There is one heat exchanger and two refrigerant diversion components, or there are multiple heat exchangers and multiple refrigerant diversion components are respectively provided corresponding to the multiple heat exchangers. Therefore, it is suitable to evenly distribute the refrigerant to the heat exchanger.

[0025] In addition, in the air-conditioning indoor unit of the present invention, the upper surface of the bottom wall of the drain pan preferably has: a first inclined surface, which is inclined downward as it is farther away from the fan section and is located on the primary side of the heat exchanger; a second inclined surface, which is inclined upward as it is farther away from the fan section and is located on the secondary side of the heat exchanger; and a drainage groove, which is located between the first inclined surface and the second inclined surface, and the angle between the first inclined surface and the horizontal plane is smaller than the angle between the second inclined surface and the horizontal plane.

[0026] According to the air-conditioning indoor unit of the utility model, the upper surface of the bottom wall of the drain pan has: a first inclined surface, which is inclined in a manner that the farther away from the fan section, the lower it is, and is located on the primary side of the heat exchanger; a second inclined surface, which is inclined in a manner that the farther away from the fan section, the upper it is, and is located on the secondary side of the heat exchanger; and a drainage groove, which is located between the first inclined surface and the second inclined surface, and the angle between the first inclined surface and the horizontal plane is smaller than the angle between the second inclined surface and the horizontal plane, thereby helping the condensed water falling from the heat exchanger to smoothly gather in the drainage groove and discharge the condensed water.

[0027] In addition, in the air-conditioning indoor unit of the utility model, the side panel preferably has: an installation opening; and an installation cover plate, which blocks the installation opening, and the installation cover plate has a second bottom wall, which is opposite to the top of the drain pan side wall, and the bottom surface of the second bottom wall is provided with: an inwardly concave recessed portion, and / or a second water guide surface inclined downward toward the side opposite to the outer surface of the side panel.

[0028] According to the air-conditioning indoor unit of the utility model, the side panel has: an installation opening; and an installation cover plate, which blocks the installation opening, and the installation cover plate has a second bottom wall, which is opposite to the top of the drain pan side wall, and the bottom surface of the second bottom wall is provided with: an inwardly concave recessed portion, and / or a second water guide surface inclined downward toward the side opposite to the outer surface of the side panel. Therefore, even if condensed water drops onto the installation cover plate, the condensed water will flow along the inner wall of the installation cover plate and directly fall into the drain pan. That is to say, it can effectively prevent the condensed water from flowing along the second bottom wall toward the side panel, so that the condensed water falls into the drain pan, thereby, the condensed water can be smoothly guided into the drain pan and discharged.

[0029] In addition, in the air-conditioning indoor unit of the utility model, the drain pan preferably has a drain pump setting area, a drain pump is arranged in the drain pump setting area, and the side panel is provided with: a maintenance opening for inspecting the drain pump; and a maintenance cover for blocking the maintenance opening, and a chamfer is arranged on the bottom surface of the maintenance opening at the edge close to the inner side of the shell.

[0030] According to the air conditioner indoor unit of the utility model, the drain pan has a drain pump setting area, a drain pump is arranged in the drain pump setting area, and the side panel is provided with: a maintenance opening for inspecting the drain pump; and a maintenance cover plate for blocking the maintenance opening, and a chamfer is arranged on the edge close to the inner side of the shell at the bottom surface of the maintenance opening, so as to facilitate the installation and disassembly of the drain pump through the maintenance opening.

[0031] In addition, in the air-conditioning indoor unit of the utility model, it is preferred that the air-conditioning indoor unit also includes a fixing plate connecting the heat exchanger and the side panel, and the water leakage prevention structure is provided with a groove for inserting the lower end of the fixing plate and with a closed bottom surface, and the bottom surface of the groove is inclined downward toward the inner side of the drain pan.

[0032] According to the air-conditioning indoor unit of the utility model, the air-conditioning indoor unit also includes a fixing plate connecting the heat exchanger and the side plate. The water leakage prevention structure is provided with a groove for inserting the lower end of the fixing plate and with a closed bottom. The bottom surface of the groove is inclined downward toward the inner side of the drain pan. Therefore, even if condensed water flows into the groove from the water guide surface, it will eventually flow out along the bottom surface of the groove to the inside of the drain pan and will not flow to the outside of the air-conditioning indoor unit.

[0033] In addition, in the air-conditioning indoor unit of the utility model, the drain pan preferably has a drain pump setting area, and a drain pump and a float switch are arranged in the drain pump setting area. The float switch is arranged to be inclined relative to the horizontal plane (for example, inclined at 5°), and the lower part is away from the surrounding wall of the drain pan including the side wall.

[0034] According to the air conditioner indoor unit of the utility model, the drain pan has a drain pump setting area, and the drain pump and the float switch are arranged in the drain pump setting area. The float switch is inclined relative to the horizontal plane, and the lower part is away from the surrounding wall including the side wall of the drain pan. Therefore, the float switch is not easy to contact the surrounding wall of the drain pan, and the compactness of the air conditioner indoor unit can be ensured.

[0035] In addition, in the air-conditioning indoor unit of the utility model, it is preferred that the air-conditioning indoor unit also includes: an electrical component box, which is arranged on the fan section, is provided with a first wire passing hole, and a circuit board is arranged inside; and a fixing plate, which connects the heat exchanger to the side plate and is provided with a second wire passing hole, the drain pan has a drain pump setting area, a drain pump is arranged in the drain pump setting area, and the wiring led out from the drain pump is connected to the circuit board via the second wire passing hole and the first wire passing hole in sequence.

[0036] According to the utility model, the air-conditioning indoor unit further includes: an electrical component box, which is arranged on the fan section, is provided with a first wire passing hole, and has a circuit board inside; and a fixing plate, which connects the heat exchanger to the side plate, and is provided with a second wire passing hole. The drain pan has a drain pump setting area, and a drain pump is arranged in the drain pump setting area. The wiring led out from the drain pump is connected to the circuit board via the second wire passing hole and the first wire passing hole in sequence. Therefore, the wiring routing of the drain pump is convenient.

[0037] (Effect of utility model)

[0038] According to the utility model, a water leakage prevention structure is provided on the inner side of the side panel, which is formed integrally or separately with the insulation part. The water leakage prevention structure has a first bottom wall and a first side wall. At least a portion of the first bottom wall is directly in contact with the top of the side wall of the drain pan or is in contact with the top of the side wall of the drain pan through a seal. The first side wall is away from the outer surface of the side panel, and the projection of the lowermost end falls into the inner side of the drain pan. Therefore, the first side wall of the water leakage prevention structure can be used to guide condensed water dripping from the refrigerant piping, etc. toward the inner side of the drain pan, thereby preventing the condensed water from flowing out through the gap between the side panel and the drain pan and remaining between the drain pan and the bottom plate, thereby preventing the condensed water from leaking to the outside of the air conditioner indoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a top view schematically showing an air-conditioning indoor unit according to an embodiment of the present invention.

[0040] Figure 2 It is a three-dimensional view schematically showing an air-conditioning indoor unit according to an embodiment of the present invention, in which a part of the casing is omitted.

[0041] Figure 3 It is a bottom view schematically showing an air conditioner indoor unit according to an embodiment of the present utility model, in which a part of the casing and the drain pan are omitted.

[0042] Figure 4A is along Figure 1 A cross-sectional view taken along line AA, wherein components within the housing are omitted.

[0043] Figure 4B yes Figure 4AA local enlarged view of the lower right corner of FIG. , in which the dotted line shows the projection of the lowermost end of the first side wall.

[0044] Figure 5 It is a perspective view schematically showing an air conditioner indoor unit according to an embodiment of the present invention, in which a part of the casing, the heat exchanger and the piping assembly are omitted.

[0045] Figure 6 It is a three-dimensional view schematically showing an air-conditioning indoor unit according to an embodiment of the present invention, in which a part of the casing is omitted.

[0046] Fig. 7A It is a partial side view schematically showing the structure near the water leakage prevention structure of the air-conditioning indoor unit according to the embodiment of the present invention.

[0047] Figure 7B It is a partial side cross-sectional view schematically showing the structure near the water leakage prevention structure of the air-conditioning indoor unit according to the embodiment of the present invention.

[0048] Fig. 8A It is a partial side view schematically showing the structure near the mounting cover plate of the air-conditioning indoor unit according to the embodiment of the present invention.

[0049] Figure 8B It is a partial side cross-sectional view schematically showing the structure near the mounting cover of the air conditioner indoor unit according to the embodiment of the present invention, in which the sealing member of the mounting cover is omitted.

[0050] Fig. 9 It is a perspective view schematically showing a part of a casing of an air-conditioning indoor unit according to an embodiment of the present invention.

[0051] Fig. 10A It is a perspective view schematically showing a first cover plate of an air-conditioning indoor unit according to an embodiment of the present invention.

[0052] Fig. 10B This is a perspective view schematically showing a state in which a seal is removed from a first cover plate of an air-conditioning indoor unit according to an embodiment of the present invention.

[0053] Fig.11 It is a schematic side view for explaining the arrangement of the heat exchanger.

[0054] FIG. 12A to FIG. 12F It is a partial side sectional view schematically showing the structure near the water leakage prevention structure of the air-conditioning indoor unit according to the embodiment and the modified example of the utility model, wherein the dotted line shows the projection of the lowermost end of the first side wall.

[0055] (Explanation of symbols)

[0056] 1 Air conditioner indoor unit

[0057] 10 Housing

[0058] 11 Bottom Plate

[0059] 12 Top Plate

[0060] 13 Side Panel

[0061] 131 Heat exchanger section side plate

[0062] 131A outer panel

[0063] 131B Insulation

[0064] 132 Fan section side panel

[0065] 20 Fan

[0066] 30 Heat exchanger

[0067] 40 Refrigerant piping

[0068] 50 Drain pan

[0069] 51 bottom wall

[0070] 511 First inclined surface

[0071] 512 Second inclined surface

[0072] 513 Drainage Trough

[0073] 52 Wall

[0074] 521 Sidewall

[0075] 60 Drain pump

[0076] 61 Float switch

[0077] 71 Partition

[0078] 72 Fixed plate

[0079] 80 Refrigerant flow distribution assembly

[0080] 90 Electrical components box

[0081] SG1 Fan Section

[0082] SG2 heat exchanger section

[0083] GD Waterproof Structure

[0084] GD1 First bottom wall

[0085] GD2 First side wall

[0086] DS First water guide surface

[0087] DS2 Second water guide surface

[0088] SL Grooving

[0089] JF Air Inlet

[0090] CF air outlet

[0091] K1 Mounting opening

[0092] K2 Maintenance opening

[0093] K21 Chamfer

[0094] G1 Installation cover

[0095] G11 Install the cover body

[0096] G111 Second bottom wall

[0097] G112 Second side wall

[0098] G12 Seals

[0099] G2 Service Cover

[0100] GK Second cable hole

[0101] P Natural Drain

[0102] Q Drain pump installation area

[0103] α Angle between the heat exchanger and the horizontal plane DETAILED DESCRIPTION

[0104] Next, combine Figures 1 to 11 An air-conditioning indoor unit according to an embodiment of the present invention will be described.

[0105] Here, for the sake of convenience, three mutually orthogonal directions are set as X, Y and Z directions, and one side of the X direction is set as X1, the other side of the X direction is set as X2, one side of the Y direction is set as Y1, the other side of the Y direction is set as Y2, one side of the Z direction is set as Z1, and the other side of the Z direction is set as Z2, and the Z1 direction is consistent with the upper side in actual use, for example.

[0106] (Overall structure of the air conditioner indoor unit)

[0107] like Figures 1 to 6As shown, the air conditioner indoor unit 1 includes: a housing 10, the housing 10 having a fan section SG1 and a heat exchanger section SG2; a fan 20, the fan 20 is arranged in the fan section SG1; and a heat exchanger 30, the heat exchanger 30 is arranged in the heat exchanger section SG2, the heat exchanger section SG2 has a heat exchanger section side plate 131, a heat insulation part 131B is arranged on the inner side of the heat exchanger section side plate 131, and a drain pan 50 is arranged on the Z2 direction side (i.e., the lower side) of the heat exchanger 30. And, as shown in FIG. Fig. 7A , Figure 7B and Fig. 9 As shown, a water leakage prevention structure GD is provided on the inner side of the heat exchanger section side plate 131, which is integrally or separately formed with the insulation part 131B. The water leakage prevention structure GD has a first bottom wall GD1 and a first side wall GD2. At least a portion of the first bottom wall GD1 directly abuts against the top of the side wall 521 of the drain pan 50 from the Z1 direction (i.e., upward) or abuts against a seal (not shown) through the first side wall GD2, and the first side wall GD2 is away from the outer surface of the side plate 131, and the projection of the lowermost end falls into the inner side of the drain pan 50.

[0108] Here, if Figures 1 to 6 As shown, the air conditioner indoor unit 1 is a duct unit and has an air inlet JF and an air outlet CF.

[0109] In addition, if Figure 2 , Figure 3 and Figure 5 As shown, the air conditioner indoor unit 1 further includes a drain pump 60 , which is used to drain the condensed water in the drain pan 50 .

[0110] In addition, if Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the air conditioner indoor unit 1 further includes a partition 71, which is located between the fan section SG1 and the heat exchanger section SG2. In addition, the partition 71 is provided with an opening corresponding to the air outlet of the fan 20.

[0111] In addition, if Figure 3 As shown, the air conditioning indoor unit 1 further includes a fixing plate 72 connecting the heat exchanger 30 to the heat exchanger section side plate 131 .

[0112] In addition, if Figure 6 As shown, the air-conditioning indoor unit 1 further includes a refrigerant flow distribution component 80 , which distributes the refrigerant to the heat exchanger 30 .

[0113] In addition, if Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the air-conditioning indoor unit 1 further includes an electrical component box 90 , which is disposed in the fan segment SG1 . Components such as a circuit board for controlling the operation of the air-conditioning indoor unit 1 are disposed in the electrical component box 90 .

[0114] In addition, although not shown, the air conditioner indoor unit 1 is connected to the air conditioner outdoor unit via a refrigerant pipe 40, thereby forming a refrigerant circuit for cooling and / or heating operation. During operation, through the operation of the fan 20, air flows into the housing 10 from the air inlet JF, passes through the fan section SG1 and the heat exchanger section SG2 in sequence, and then flows out from the air outlet CF.

[0115] (case)

[0116] As described above, the housing 10 has the fan section SG1 and the heat exchanger section SG2.

[0117] Here, if Figures 1 to 6 As shown, the housing 10 is in the shape of a rectangular parallelepiped as a whole, and has: a bottom plate 11 and a top plate 12 spaced apart and facing each other in the Z direction; and a side plate 13 and another side plate spaced apart and facing each other in the X direction and connecting the edges of the bottom plate 11 and the top plate 12 in the X direction. In addition, the bottom plate 11, the top plate 12, the side plate 13 and the other side plate form a cylindrical portion, and an air inlet JF is provided at one end of the cylindrical portion (the end on the Y1 direction side in the example shown in the figure), and an air outlet CF is provided at the other end (the end on the Y2 direction side in the example shown in the figure).

[0118] In addition, if Figure 5 As shown, the heat exchanger segment SG2 has a heat exchanger segment side plate 131 constituting the side plate 13 (in the example shown in the figure, the heat exchanger segment side plate 131 is passed through by the refrigerant pipe 40, but this is not limited to this). In addition, the fan segment SG1 has a fan segment side plate 132 constituting the side plate 13 together with the heat exchanger segment side plate 131. Figure 5 and Fig. 9 As shown, the heat exchanger section side plate 131 has: an installation opening K1 (in the example shown in the figure, the refrigerant pipe 40 passes through, but not limited to this); and an installation cover plate G1 that blocks the installation opening K1. Figure 5 and Fig. 9 As shown, the heat exchanger section side plate 131 further has: a maintenance opening K2 for inspecting the drain pump 60 (in the illustrated example, closer to the Y2 direction side than the installation opening K1, but not limited thereto); and a maintenance cover G2 for blocking the maintenance opening K2.

[0119] Specifically, if Figure 4A , Figure 4B , Figure 5 and Fig. 9As shown, the heat exchanger section side plate 131 includes an outer plate 131A (for example, made of metal) and a heat insulating portion 131B (for example, made of foam material in a plate shape) attached to the inner wall surface of the outer plate 131A, the outer plate 131A is provided with openings constituting the installation opening K1 and the maintenance opening K2 (not shown), the heat insulating portion 131B is provided with through openings corresponding to the installation opening K1 and the maintenance opening K2, and the heat exchanger section side plate 131 includes an installation cover plate G1 and a maintenance cover plate G2 for blocking the above-mentioned openings of the outer plate 131A and the above-mentioned through openings of the heat insulating portion 131B. And, as shown in FIG. Figure 5 , Fig. 7A , Figure 7B and Fig. 9 As shown, in the heat exchanger section side plate 131, the insulation portion 131B is formed with a water leakage prevention structure GD (that is, the insulation portion 131B and the water leakage prevention structure GD are formed integrally), and the water leakage prevention structure GD is a convex rib protruding toward the side opposite to the outer surface of the side plate 13 (in the example shown in the figure, it continuously extends from the through-hole of the insulation portion 131B corresponding to the installation opening K1 to the end of the insulation portion 131B on the Y2 direction side, but is not limited to this), and has a first water guide surface DS facing the Z1 direction, and the first water guide surface DS is inclined toward the Z2 direction toward the side opposite to the outer surface of the side plate 13 (for example, like Fig. 7A , Figure 7B The rib is located in the Z2 direction of the refrigerant pipe 40 (i.e., below, directly below or obliquely below, and below at least a portion of the refrigerant pipe 40), and is provided with a cut groove SL for the end of the fixing plate 72 on the Z2 direction side to be inserted and the bottom surface of which is closed, and the bottom surface of the cut groove SL is inclined toward the inside of the drain pan 50 and toward the Z2 direction. Fig. 8A , Figure 8B , Fig. 10A and Fig. 10B As shown, the mounting cover G1 has a second bottom wall G111, which is opposite to the top of the side wall 521 of the drain pan 50; and the mounting cover G1 has a second side wall G112, which is away from the outer surface of the side plate 131, and the projection of the lowermost end falls into the inner side of the drain pan 50 (in the example shown in the figure, the bottom surface of the second bottom wall G111 is provided with a concave portion concave upward, but it is not limited to this, and the concave portion can also be omitted). And, as Fig. 8A , Figure 8B , Fig. 10A and Fig. 10BAs shown, the installation cover G1 includes an installation cover body G11 (for example, made of metal) provided with a second bottom wall G111 and a second side wall G112, and a sealing member G12 (for example, made of polyethylene) attached to the Z2 direction side of the inner wall of the installation cover body G11. The sealing member G12 is closer to the Z2 direction side relative to G111 and is located between the installation cover body G11 and the side wall 521 of the drain pan 50. And, as shown in FIG. Fig. 9 As shown, a chamfer K21 is provided at the bottom surface of the maintenance opening K2 and at the edge close to the inner side of the housing 10 to facilitate the disassembly of the drainage pump assembly.

[0120] (Heat Exchanger)

[0121] like Figure 2 and Figure 6 As shown, the heat exchanger 30 is provided with one.

[0122] Here, if Figure 2 and Figure 6 As shown, the heat exchanger 30 is in the shape of a flat plate and is inclined in a manner such that the farther away from the fan segment SG1 , the closer to the Z1 direction (ie, upward).

[0123] In addition, if Fig.11 As shown, when the angle between the heat exchanger 30 and the horizontal plane is α, the following relationship is preferably satisfied: α≥37° and ≤41°. Moreover, α is more preferably 39°.

[0124] (Drain pan)

[0125] like Figure 5 , Figure 6 and Fig. 7A As shown, the drain pan 50 has a natural drain port P and a drain pump installation area Q, and a drain pump 60 is installed in the drain pump installation area Q.

[0126] Here, if Figure 5 and Figure 6 As shown, the natural drain port P and the drain pump installation area Q are provided on the secondary side of the heat exchanger 30 (the Y2 direction side in the example shown in the figure).

[0127] In addition, if Figure 5 , Figure 6 , Figure 7B and Figure 8BAs shown, the drain pan 50 has a bottom wall 51 and a peripheral wall 52, and the peripheral wall 52 stands up from the peripheral edge of the bottom wall 51 toward the Z1 direction, and includes a side wall 521 (in the example shown in the figure, the inner wall surface of the side wall 521 is closer to the outer surface of the side plate 131 as it goes up, but it is not limited to this, and it can also be formed to be parallel to the Z direction, etc.). Furthermore, the surface on the Z1 direction side of the bottom wall 51 (i.e., the upper surface) has: a first inclined surface 511, which is inclined in a manner that the farther away from the fan segment SG1, the closer to the Z2 direction, and is located on the primary side of the heat exchanger 30 (the Y1 direction side in the illustrated example); a second inclined surface 512, which is inclined in a manner that the farther away from the fan segment SG1, the closer to the Z1 direction, and is located on the secondary side of the heat exchanger 30; and a drainage groove 513, which is located between the first inclined surface 511 and the second inclined surface 512, and the angle between the first inclined surface 511 and the horizontal plane is smaller than the angle between the second inclined surface 512 and the horizontal plane.

[0128] In addition, if Figure 6 and Fig. 7A As shown, the natural drain port P extends through the side wall 521 .

[0129] (Main Effects of the Present Embodiment)

[0130] According to the air-conditioning indoor unit 1 of the present embodiment, a water-leakage prevention structure GD formed integrally or separately with the heat-insulating portion 131B is provided on the inner side of the side plate 131, and the water-leakage prevention structure GD has a first bottom wall GD1 and a first side wall GD2, at least a portion of the first bottom wall GD1 is directly in contact with the top of the side wall 521 of the drain pan 50 or is in contact with the seal through the first side wall GD2, and the first side wall GD2 is away from the outer surface of the side plate 131, and the projection of the lowermost end falls into the inner side of the drain pan 50 (preferably falls into the bottom wall of the drain pan 50), therefore, under the action of the static pressure formed by the air discharge of the fan 20, part of the condensed water on the refrigerant piping 40, the first cover plate G1, etc. flows to the inner side of the side plate 131 (or the inner side of the heat-insulating portion 131B), and is guided into the drain pan 50 by the water-leakage prevention structure GD below, thereby preventing the condensed water from flowing out through the gap between the heat exchanger section side plate 131 and the drain pan 50 and remaining between the drain pan 50 and the bottom plate 11.

[0131] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned embodiments.

[0132] For example, in the above-mentioned embodiment, the air conditioner indoor unit 1 is a duct unit, but the present invention is not limited thereto and may be another type of unit such as a ceiling embedded unit.

[0133] In addition, in the above-mentioned embodiment, the heat exchanger section side plate 131 includes the outer plate 131A and the heat insulating portion 131B attached to the inner wall surface of the outer plate 131A, but the present invention is not limited thereto, and the heat exchanger section side plate 131 may include only the outer plate 131A. In this case, for example, a part of the outer plate 131A is formed of a heat insulating material and constitutes the heat insulating portion 131B.

[0134] Furthermore, in the above-mentioned embodiment, the water leakage prevention structure GD is formed integrally with the heat insulating portion 131B, but the present invention is not limited thereto, and the water leakage prevention structure GD may also be formed separately from the heat insulating portion 131B.

[0135] In addition, in the above-mentioned embodiment, the water leakage prevention structure GD can extend continuously from the end of the heat exchanger section side plate 131 on the Y1 direction side to the end of the Y2 direction side, or can be formed in a part of the range between the end of the heat exchanger section side plate 131 on the Y1 direction side and the end of the Y2 direction side, or can be formed intermittently.

[0136] In addition, in the above embodiment, one heat exchanger 30 is provided and two refrigerant flow dividing components 80 are provided, but it is not limited thereto. Alternatively, a plurality of heat exchangers 30 may be provided and a plurality of refrigerant flow dividing components 80 may be provided corresponding to the plurality of heat exchangers 30 .

[0137] Furthermore, in the above-described embodiment, the heat exchanger 30 may be inclined so as to be positioned downward as it becomes farther away from the fan segment SG1 .

[0138] Furthermore, in the above-described embodiment, the heat exchanger 30 may be formed in a shape other than a flat plate shape, for example, in a C-shape, a U-shape, or the like.

[0139] In addition, in the above embodiment, a groove that is recessed toward the Z1 direction (ie, upward) may be provided on the bottom surface of the drain pan 50 .

[0140] In addition, in the above embodiment, the electrical component box 90 may be provided with a first wire hole (not shown), and Figure 6 and Figure 7B As shown, the fixing plate 72 is provided with a second wire hole GK (located below the water leakage prevention structure GD), and the wiring drawn from the drainage pump 60 is connected to the circuit board in the electrical component box 90 via the second wire hole GK and the first wire hole in sequence.

[0141] In addition, in the above-mentioned embodiment, inside the shell 10, the refrigerant piping 40 can first extend in the horizontal direction and then bend downward to be connected to the heat exchanger 30. Thus, by fixing the wiring to the downward bent portion of the refrigerant piping 40, part of the condensed water can fall into the drain pan 50 through the wiring, thereby preventing part of the condensed water on the piping from splashing onto the side plate.

[0142] Furthermore, in the above embodiment, the refrigerant pipe 40 is used to connect the air conditioner indoor unit 1 and the air conditioner outdoor unit, but the present invention is not limited thereto, and the refrigerant pipe 40 may also be a U-tube or a capillary tube of a heat exchanger.

[0143] In addition, in the above embodiment, Figure 5 As shown, a float switch 61 is disposed in the drain pump installation area Q. The float switch 61 is disposed obliquely relative to the horizontal plane, and the lower portion is away from the peripheral wall 52 of the drain pan 50 .

[0144] In addition, in the above embodiment, if Fig. 12A As shown in FIG. 1 , a convex rib is formed as a water leakage prevention structure GD, and a first water guide surface DS is formed, but it is not limited thereto. Fig. 12B As shown, no ribs and the first water guide surface DS are formed, or as shown Fig. 12C As shown, no ribs are formed (the overall thickness of the portion of the heat insulation member above the top of the side wall 521 of the drain pan 50 is increased to form a water leakage prevention structure GD) but a first water guide surface DS is formed, or as shown Fig.12D As shown in FIG. 1 , the convex rib and the first water guide surface DS are not formed, but a second water guide surface DS2 inclined downward toward the side opposite to the outer surface of the side plate 131 is provided on the top of the side wall 521 of the drain pan 50 (the second water guide surface may be a plane, an arc surface, or a combination of a plane and an arc surface), or as shown in FIG. Fig.12E As shown, the convex rib and the first water guide surface DS are not formed, but a second water guide surface DS2 inclined downwardly toward the side opposite to the outer surface of the side plate 131 is provided on the first bottom wall GD1 (the second water guide surface can be a plane, a circular arc surface, or a combination of a plane and a circular arc surface; and, as shown by the dotted line, the second water guide surface can be formed across the entire first bottom wall GD1), or as shown in FIG. Fig.12F As shown, second water guide surfaces are respectively provided on the top of the side wall 521 and the first bottom wall GD1 of the drain pan 50 (the second water guide surface may be a plane, an arc surface, or a combination of a plane and an arc surface).

[0145] Furthermore, in the above-mentioned embodiment, the number of fans 20 can be appropriately set as required, and may be one or more than two.

[0146] It should be understood that within the scope of the present invention, various parts in the embodiments can be freely combined, or various parts in the embodiments can be appropriately deformed or omitted.

Claims

1. An air conditioner indoor unit, comprising: A housing having a fan section and a heat exchanger section; a fan disposed in the fan section; and a heat exchanger, the heat exchanger being arranged in the heat exchanger section, the heat exchanger section having a side plate, the inner side of the side plate being provided with a heat insulation part, and a drain pan being provided on the lower side of the heat exchanger, characterized in that: A water-leakage-proof structure is provided on the inner side of the side plate, which is formed integrally or separately with the insulation part. The water-leakage-proof structure has a first bottom wall and a first side wall. At least a portion of the first bottom wall is directly in contact with the top of the side wall of the drain pan or is in contact with the top of the side wall of the drain pan through a seal. The first side wall is away from the outer surface of the side plate, and the projection of the lowermost end falls into the inner side of the drain pan.

2. The air conditioner indoor unit according to claim 1, characterized in that: The water leakage prevention structure is a convex rib protruding toward the side opposite to the outer surface of the side plate, and has a first water guide surface facing upward and inclined downward toward the side opposite to the outer surface of the side plate.

3. The air conditioner indoor unit according to claim 1, characterized in that: At least one of the first bottom wall and the top of the drain pan side wall is provided with an inclined surface which is inclined downward toward a side opposite to the outer surface of the side plate.

4. The air conditioner indoor unit according to claim 1, characterized in that: The heat exchanger section is provided with a refrigerant pipe at least partly located between the heat exchanger and the side plate. The water leakage prevention structure is formed at least below at least a portion of the refrigerant pipe.

5. The air conditioner indoor unit according to claim 1, characterized in that: The drain pan has a natural drain outlet and a drain pump setting area. A drainage pump is arranged in the drainage pump arrangement area. The natural drain port and the drain pump setting area are arranged on the secondary side of the heat exchanger.

6. The air conditioner indoor unit according to claim 1, characterized in that: The air conditioner indoor unit further comprises a refrigerant flow distribution component, which distributes the refrigerant to the heat exchanger. The heat exchanger is provided with one and the refrigerant flow dividing components are provided with two, or the heat exchanger is provided with a plurality and the refrigerant flow dividing components are provided with a plurality corresponding to the plurality of heat exchangers, respectively.

7. The air conditioner indoor unit according to claim 1, characterized in that: The side plate has: an installation opening; and an installation cover plate, the installation cover plate blocking the installation opening, The mounting cover plate has a second bottom wall, which is opposite to the top of the drain pan side wall. The bottom surface of the second bottom wall is provided with: an inwardly concave recessed portion, and / or a second water guide surface inclined downwardly toward a side opposite to the outer surface of the side plate.

8. The air conditioner indoor unit according to claim 1, characterized in that: The drain pan has a drain pump setting area, A drainage pump is arranged in the drainage pump arrangement area. The side plate is provided with: a maintenance opening for inspecting the drainage pump; and a maintenance cover plate for blocking the maintenance opening. A chamfer is provided at the bottom surface of the maintenance opening at an edge close to the inner side of the shell.

9. The air conditioner indoor unit according to claim 1, characterized in that: The air conditioner indoor unit further includes a fixing plate connecting the heat exchanger to the side plate. The anti-leakage structure is provided with a cut groove for the lower end of the fixing plate to be inserted and the bottom surface is closed. The bottom surface of the cutout groove is inclined downward toward the bottom of the drain pan.

Images