Indoor unit of air conditioner

Abstract

The utility model provides an indoor unit of an air conditioner, which comprises a first-section heat exchanger, a second-section heat exchanger and a third-section heat exchanger, a second-section heat exchanger; a third-section heat exchanger; the included angle between the width direction of the second-section heat exchanger and the horizontal plane is a third included angle alpha3 which is larger than or equal to 45 degrees; the included angle between the width direction of the third-section heat exchanger and the horizontal plane is a seventh included angle alpha7 which is larger than or equal to 45 degrees; the included angle between the width direction of the first-section heat exchanger and the width direction of the second-section heat exchanger is a fourth included angle alpha4, alpha4 is larger than or equal to 90 degrees, alpha3 is larger than or equal to 45 degrees, alpha7 is larger than or equal to 45 degrees, and alpha4 is larger than or equal to 90 degrees. The space in the front-back direction and the height direction of the main body can be fully utilized under the condition that the heat exchange area of the indoor heat exchanger is sufficient, the height size and the front-back size of the main body are reduced as much as possible, and the air conditioner indoor unit can be installed in narrow space such as the upper portion of a window or a door.

Description

Technical Field

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

[0002] In small spaces such as kitchens, bathrooms, small bedrooms, storage rooms, and convenience stores, the indoor wall space is very limited. For example, the kitchen wall is surrounded by range hoods, cabinets, windows, doors connecting to the living room, and refrigerators. There is a ceiling on the top of the wall. If an air conditioner is to be installed, this small space scenario will limit the size of the air conditioner and the air inlet and outlet.

[0003] A conventional wall-mounted air conditioner indoor unit includes a casing, an air inlet and an air outlet are arranged on the casing, an indoor heat exchanger is arranged in the casing, the air inlet is arranged at the top of the casing, and the air outlet is arranged at the front lower part of the casing. The casing also includes a front volute tongue and a rear volute tongue and a volute tongue air duct arranged between the front volute tongue and the rear volute tongue. When the air conditioner indoor unit is working, air enters the casing from the indoor air inlet and then flows out from the indoor air outlet through the volute tongue air duct, which requires a certain height of air inlet space to be reserved at the top of the casing; however, in the kitchen scene, since there will be a ceiling on the top of the kitchen and the height space of the kitchen is insufficient, the wall-mounted air conditioner indoor unit is required to be installed close to the ceiling to save space, but after the conventional wall-mounted unit is installed close to the ceiling, the air inlet of the wall-mounted air conditioner indoor unit will be blocked and air cannot enter.

[0004] At present, there are some air conditioner indoor units that have an air inlet at the bottom of the air conditioner and an air outlet at the front side of the air conditioner, so that the air is inletted at the bottom of the air conditioner and outletted at the front side, and when the air conditioner is installed close to the ceiling, the air inlet will not be blocked. However, the indoor heat exchanger of the existing air conditioner indoor unit with bottom air inlet and front air outlet is generally set in two sections, one end is set at the front side of the indoor fan, and the other end is set at the rear end of the indoor fan, so that the heat exchange area is limited, and the space utilization in the front-to-back direction and the height direction of the main body is unreasonable, the space is seriously wasted, the heat exchange area is small, and the heat exchange effect is poor, so that the height dimension and front-to-back dimension of the main body are large, the cost is high, and it is not conducive to installation in small spaces such as kitchens, and it is not conducive to installation above doors and windows in small spaces. Therefore, the present application proposes an air conditioner indoor unit. Summary of the invention

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, according to an embodiment of the present disclosure, an air conditioner indoor unit is provided, comprising:

[0007] A main body, wherein the length direction of the main body is from one side end to the other side end, and the main body at least includes a first cavity located inside the main body;

[0008] The subject includes:

[0009] A casing, wherein an indoor air inlet is provided at the bottom thereof, an indoor air outlet is provided at the front side of the casing, and the indoor air outlet and the indoor air inlet are in communication with the first cavity;

[0010] an indoor heat exchanger, disposed in the first chamber;

[0011] an indoor fan, arranged in the first cavity and located on a side of the indoor heat exchanger away from the indoor air inlet, the indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger, and the air after heat exchange with the indoor heat exchanger flows out of the first cavity through the indoor air outlet;

[0012] The indoor heat exchanger comprises:

[0013] A first section heat exchanger, wherein the front end and the rear end are two ends of the first section heat exchanger in the width direction, and the first section heat exchanger is located below the indoor fan;

[0014] The second section heat exchanger, wherein the bottom end and the top end are two ends of the second section heat exchanger in the width direction, and the bottom end of the second section heat exchanger is located at the rear end of the first section heat exchanger;

[0015] The third section heat exchanger has a bottom end and a top end as two ends in the width direction of the first section heat exchanger, and the bottom end of the third section heat exchanger is located at the front end of the first section heat exchanger;

[0016] The angle between the width direction of the second section heat exchanger and the horizontal plane is a third angle α3, α3 ≥ 45°;

[0017] The angle between the width direction of the third section heat exchanger and the horizontal plane is the seventh angle α7, α7≥45°;

[0018] An angle between the width direction of the first section heat exchanger and the width direction of the second section heat exchanger is a fourth angle α4, and the fourth angle is toward the indoor fan, and α4≥90°.

[0019] An indoor air inlet is arranged at the bottom of the casing and an air outlet is arranged at the front side of the casing, so that air can be taken in from the bottom and out from the front side of the air-conditioning indoor unit, and the indoor air inlet will not be blocked when the air-conditioning indoor unit is installed close to the ceiling, so it is convenient to be installed in a small space such as a kitchen, thereby improving the possibility and convenience of installing the air-conditioning indoor unit in a small space; an indoor heat exchanger is arranged to include three sections, the first section of the heat exchanger is arranged below the indoor fan, and the second section of the heat exchanger is arranged at the rear end of the first section of the heat exchanger, α3≥45°, α7≥45°, α4≥90°, which can facilitate the drainage of the first section of the heat exchanger and the third section of the heat exchanger, and can ensure that the heat exchange area of ​​the indoor heat exchanger is sufficient to make full use of the space in the front-to-back direction and the height direction of the main body, minimize the height dimension and the front-to-back dimension of the main body, and the air-conditioning indoor unit can be installed in a narrow space such as above a window or door.

[0020] According to an embodiment of the present disclosure, an air conditioner indoor unit is also provided, comprising:

[0021] A main body, wherein the length direction of the main body is from one side end to the other side end, and the main body at least includes a first cavity located inside the main body;

[0022] The subject includes:

[0023] A casing, wherein an indoor air inlet is provided at the bottom thereof, an indoor air outlet is provided at the front side of the casing, and the indoor air outlet and the indoor air inlet are in communication with the first cavity;

[0024] an indoor heat exchanger, disposed in the first chamber;

[0025] an indoor fan, disposed in the first cavity and located on a side of the indoor heat exchanger away from the indoor air inlet;

[0026] The air conditioner indoor unit comprises:

[0027] an air outlet shell connected to the housing and located at the indoor air outlet, an air outlet duct being formed in the air outlet shell, the air outlet duct being connected to the first cavity through the indoor air outlet, and a first vent being provided at a first end of the air outlet shell away from the indoor air outlet;

[0028] The indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger, and the air after heat exchange with the indoor heat exchanger flows into the air outlet duct through the indoor air outlet and flows out of the air outlet duct through the first vent;

[0029] The indoor heat exchanger comprises:

[0030] A first section heat exchanger, wherein the front end and the rear end are two ends of the first section heat exchanger in the width direction, and the first section heat exchanger is located below the indoor fan;

[0031] The second section heat exchanger, wherein the bottom end and the top end are two ends of the second section heat exchanger in the width direction, and the bottom end of the second section heat exchanger is located at the rear end of the first section heat exchanger;

[0032] The third section heat exchanger has a bottom end and a top end as two ends in the width direction of the first section heat exchanger, and the bottom end of the third section heat exchanger is located at the front end of the first section heat exchanger;

[0033] The angle between the width direction of the second section heat exchanger and the horizontal plane is a third angle α3, α3 ≥ 45°;

[0034] The angle between the width direction of the third section heat exchanger and the horizontal plane is the seventh angle α7, α7≥45°;

[0035] An angle between the width direction of the first section heat exchanger and the width direction of the second section heat exchanger is a fourth angle α4, and the fourth angle is toward the indoor fan, and α4≥90°.

[0036] The air outlet shell is arranged, and can guide the air to the space below the suspended ceiling even after the main body is embedded in the suspended ceiling, so that the space inside the suspended ceiling can be fully utilized, and the main body is prevented from occupying the space below the suspended ceiling, which is suitable for the needs of small spaces.

[0037] According to an embodiment of the present disclosure, the angle between the width direction of the first-section heat exchanger and the width direction of the third-section heat exchanger is an eighth angle α8, and the eighth angle α8 is toward the indoor fan, α8≥90°; the eighth angle can be prevented from being too small, thereby preventing the third-section heat exchanger from tilting too far backwards, thereby reducing the placement space for the indoor fan, and reducing the size of the main body in the front-to-back direction, so that the overall size of the main body in the front-to-back direction is smaller, which is convenient for installation in a small space such as a kitchen, thereby improving the possibility and convenience of installing an air-conditioning indoor unit in a small space, and the air-conditioning indoor unit can be installed above a window or door.

[0038] According to an embodiment of the present disclosure, the indoor fan includes an indoor fan, and the minimum gap between the indoor fan and the second-stage heat exchanger is a second gap G2, G2≥8mm and / or G2≤30mm, so as to avoid the second gap being too small, avoid abnormal noise, and ensure air volume and heat exchange efficiency, avoid the second gap being too large, reduce the space occupied by the second-stage heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the air conditioner indoor unit can be installed in a small space, and reduce costs.

[0039] According to an embodiment of the present disclosure, the indoor fan includes an indoor fan, and the minimum gap between the indoor fan and the third-stage heat exchanger is the sixth gap G6, G6≥8mm and / or G6≤30mm, so as to avoid the sixth gap being too small, avoid abnormal noise, and ensure the air volume and heat exchange efficiency, avoid the sixth gap G6 being too large, reduce the space occupied by the third-stage heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the air conditioner indoor unit can be installed in a small space, and reduce costs.

[0040] According to an embodiment of the present disclosure, it includes:

[0041] A water receiving pan is arranged below the indoor heat exchanger to receive condensed water flowing down from the indoor heat exchanger; the water receiving pan comprises a water receiving surface for receiving condensed water from the indoor heat exchanger;

[0042] In the height direction of the main body, the lowest point of the first section heat exchanger is located above the lowest point of the water receiving surface;

[0043] The distance between the lowest point of the water receiving surface and the lowest point of the first section heat exchanger in the height direction of the main body is a sixth distance L6, L6 ≥ 5mm, so that there is a distance between the lowest point of the first section heat exchanger and the lowest point of the water receiving surface, so that there is a sufficient gap between the bottom of the first section heat exchanger and the bottom of the water receiving surface, so that air can enter the gap between the water receiving surface and the first section heat exchanger on both sides of the water receiving pan, so that the first section heat exchanger has a better heat exchange effect, thereby ensuring the heat exchange effect of the first section heat exchanger.

[0044] According to an embodiment of the present disclosure, in the height direction of the main body, the lowest point of the first-stage heat exchanger is located below the highest point of the water receiving tray, and the distance between the lowest point of the indoor heat exchanger and the highest point of the water receiving tray is a fifth distance L5, L5≤10mm, to prevent the first-stage heat exchanger from being inserted too deeply into the water receiving tray, to facilitate air to enter under the first-stage heat exchanger and pass through the first-stage heat exchanger, and to ensure the heat exchange effect of the first-stage heat exchanger.

[0045] According to an embodiment of the present disclosure, the housing comprises a front volute tongue and a rear volute tongue, and a volute tongue air duct is formed between the front volute tongue and the rear volute tongue;

[0046] The front volute tongue comprises a front volute tongue air duct surface that forms a volute tongue air duct;

[0047] On the flow path of air from the indoor air inlet to the indoor air outlet, the point of the front volute tongue air duct surface closest to the indoor air inlet is the front volute tongue first point D1;

[0048] The third section heat exchanger is located on the side of the first point of the front volute tongue away from the volute tongue air duct;

[0049] In the height direction of the main body, the highest point of the third-stage heat exchanger is higher than the first point of the front volute tongue, and the minimum gap between the first point of the front volute tongue and the third-stage heat exchanger is the seventh gap G7, G7≥5mm, so that the seventh gap is not too small, ensuring that the air passing through the top end of the third-stage heat exchanger can flow into the volute tongue air duct through the gap between the first point of the front volute tongue and the third-stage heat exchanger, ensuring the heat exchange effect at the top end of the third-stage heat exchanger, so that the refrigerant diversion effect in the third-stage heat exchanger is good.

[0050] According to an embodiment of the present disclosure, the housing comprises a front volute tongue and a rear volute tongue, and a volute tongue air duct is formed between the front volute tongue and the rear volute tongue;

[0051] The rear volute tongue comprises a rear volute tongue air duct surface which encloses the volute tongue air duct;

[0052] On the flow path of air from the indoor air inlet to the indoor air outlet, the point of the rear volute tongue air duct surface closest to the indoor air inlet is the rear volute tongue first point D2;

[0053] The second section heat exchanger is located on the side of the first point of the rear volute tongue away from the volute tongue air duct;

[0054] In the height direction of the main body, the highest point of the second-stage heat exchanger is higher than the first point of the rear volute tongue, and the minimum gap between the first point of the rear volute tongue and the second-stage heat exchanger is the eighth gap G8, G8≥5mm, so that the eighth gap is not too small, ensuring that the air passing through the top end of the second-stage heat exchanger can flow into the volute tongue air duct through the gap between the first point of the rear volute tongue and the second-stage heat exchanger, ensuring the heat exchange effect at the top end of the second-stage heat exchanger, so that the refrigerant diversion effect in the second-stage heat exchanger is good.

[0055] According to an embodiment of the present disclosure, at least part of the indoor air inlet is located on the front side of the water receiving tray and below the third-stage heat exchanger, which facilitates air to enter the first cavity and pass through the third-stage heat exchanger, thereby ensuring the heat exchange effect of the third-stage heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 is a three-dimensional diagram of an indoor unit of an air conditioner according to an embodiment of the present application;

[0058] Figure 2is a three-dimensional diagram of an indoor unit of an air conditioner from another perspective according to an embodiment of the present application;

[0059] Figure 3-Figure 6 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0060] Figure 7 is a partial cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0061] Figure 8 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application from another perspective;

[0062] Fig. 9 is an exploded view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0063] Fig.10 is a partial structural diagram of an air conditioner indoor unit according to an embodiment of the present application;

[0064] Fig.11 This is a schematic diagram of installing an indoor unit of an air conditioner on a ceiling according to an embodiment of the present application;

[0065] Fig.12 This is a schematic diagram of the installation of an air conditioner indoor unit embedded in a ceiling according to an embodiment of the present application;

[0066] Fig.13 is an exploded view of an air conditioner indoor unit embedded in a ceiling according to an embodiment of the present application;

[0067] Fig.14 is a schematic diagram of an air outlet device according to an embodiment of the present application;

[0068] Fig.15 is another installation schematic diagram of an air conditioner indoor unit embedded in a ceiling according to an embodiment of the present application;

[0069] Fig.16 is another partial structural diagram of an air conditioner indoor unit according to an embodiment of the present application;

[0070] Figure 17-Figure 20 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0071] Figure 21-24 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0072] Figure 25-27 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0073] Fig.28 is another partial structural diagram of an air conditioner indoor unit according to an embodiment of the present application;

[0074] Fig.29is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0075] Fig.30 This is another partial structural diagram of the air-conditioning indoor unit according to the embodiment of the present application.

[0076] In the above figures: main body 100; first cavity 101;

[0077] Casing 1; indoor air inlet 111; indoor air outlet 112; front volute tongue 121; front volute tongue air duct surface 1211; front volute tongue air outlet section 1212; front volute tongue air inlet section 1213; front volute tongue connecting section 1214; rear volute tongue 122; rear volute tongue air duct surface 1221; rear volute tongue air outlet section 1222; volute tongue air duct 123;

[0078] First mounting opening 1241; air inlet grille 125; front panel 126;

[0079] Indoor heat exchanger 21; first stage heat exchanger 211; second stage heat exchanger 212; windward surface 213 of heat exchanger; windward surface contour line 2131; leeward surface 214 of heat exchanger;

[0080] Indoor fan 22; Indoor fan 221;

[0081] Water receiving tray 23; water receiving chamber 231; water receiving chamber opening 2311; water receiving surface 232; first water receiving surface 2321; first section water receiving tray 233; second section water receiving tray 234; drainage hole 2341; top surface 235 of water receiving tray;

[0082] Outer air guide plate 31; Inner air guide plate 32;

[0083] Ceiling air inlet grille 33; grille air outlet 331;

[0084] Air outlet housing 34; air outlet duct 341; first vent 342;

[0085] Air outlet device 35; first air outlet 351; air outlet panel 352; exhaust air duct 353;

[0086] Suspended ceiling 903; suspended ceiling first installation opening 9031; suspended ceiling second installation opening 9032. DETAILED DESCRIPTION

[0087] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0088] The present application proposes an air-conditioning indoor unit, which is described below with reference to the accompanying drawings.

[0089] In the present application, the air conditioner indoor unit may be a component of the air conditioner. The air conditioner may include an air conditioner outdoor unit.

[0090] In the present application, the air conditioner indoor unit may be a hanging type air conditioner indoor unit. The air conditioner indoor unit is hung on a wall.

[0091] In the present application, the air conditioner indoor unit can be an embedded air conditioner indoor unit. The air conditioner indoor unit can be embedded in the ceiling of the room.

[0092] In this application, reference is made to Figure 1-Figure 3 The air conditioner indoor unit may include a main body 100 .

[0093] In the present application, the main body 100 may have a top and a bottom. The bottom of the main body to the top of the main body may be the height direction of the main body.

[0094] The main body 100 may have a length direction, and the length direction of the main body may be from one side end of the main body to the other side end of the main body.

[0095] The main body may have a front side and a rear side that are arranged opposite to each other. The side of the main body facing the user may be the front side of the main body. The front side of the main body to the rear side of the main body may be the front-rear direction of the main body.

[0096] The height direction, length direction and front-rear direction of the main body are perpendicular to each other.

[0097] In the present application, the air conditioner indoor unit can be arranged vertically, and the height direction of the air conditioner indoor unit is parallel to the vertical direction.

[0098] In this application, reference is made to Figure 1-Figure 3 , the body 100 may include at least a first cavity 101. The first cavity 101 may be located inside the body.

[0099] In this application, reference is made to Figure 1-Figure 3 , the main body 100 may include a housing 1 .

[0100] In this application, reference is made to Figure 1-Figure 3 An indoor air inlet 111 may be formed on the housing 1.

[0101] The indoor air inlet 111 may be disposed at the bottom of the housing 1. The indoor air inlet 111 is used as an inlet for air to enter the housing 1. The indoor air inlet 111 may be in communication with the first cavity.

[0102] In this application, reference is made to Figure 1-Figure 3 The housing 1 may be formed with an indoor air outlet 112. The indoor air outlet 112 may be disposed at the front side of the housing. The indoor air outlet 112 is used for the air in the housing 1 to flow out of the housing. The indoor air outlet 112 may be communicated with the first cavity.

[0103] In the present application, the indoor air outlet can be in the shape of a long strip and can be arranged along the length direction of the main body.

[0104] In the present application, the indoor unit of the air conditioner can be hung on a wall. The top of the indoor unit of the air conditioner can be installed against a wall or against an indoor ceiling surface, so that the indoor unit of the air conditioner is installed against the ceiling. When the indoor unit of the air conditioner is installed against the ceiling, air can enter the first cavity of the casing through the indoor air inlet at the bottom of the casing, and the air flows out of the casing from the indoor air outlet on the front side of the casing, which can avoid the top being unable to enter the top due to the top-to-ceiling installation, and can ensure that the air can smoothly enter the casing and flow out of the casing when the indoor unit of the air conditioner is installed against the ceiling.

[0105] In this application, reference is made to Figure 1-Figure 3 The main body 100 may include an indoor heat exchanger 21. The indoor heat exchanger 21 may be disposed in the first cavity. The indoor heat exchanger 21 may be used to exchange heat with the air in the first cavity.

[0106] In this application, reference is made to Figure 1-Figure 3 The main body 100 may include an indoor fan 22. The indoor fan 22 may be disposed in the first cavity. The indoor fan 22 may be located on a side of the indoor heat exchanger away from the indoor air inlet. The indoor fan may be used to provide power for the flow of air.

[0107] In the present application, the indoor fan can drive air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger, and the air after heat exchange with the indoor heat exchanger can flow out of the first cavity through the indoor air outlet.

[0108] In the present application, an indoor air inlet is arranged at the bottom of the casing and an air outlet is arranged at the front side of the casing, so that air can be taken in from the bottom and out from the front side of the air-conditioning indoor unit. The indoor air inlet will not be blocked when the air-conditioning indoor unit is installed against the ceiling, and it is convenient to install it in a small space such as a kitchen, thereby improving the possibility and convenience of installing the air-conditioning indoor unit in a small space, and the air-conditioning indoor unit can be installed in a narrow space such as above a window or door.

[0109] In the present application, the air conditioner outdoor unit may include an outdoor housing. An outdoor accommodation space may be provided in the outdoor housing.

[0110] The air conditioner outdoor unit may include an outdoor heat exchanger. The outdoor heat exchanger may be arranged in the outdoor accommodation space.

[0111] The air conditioner outdoor unit may include an outdoor fan. The outdoor fan may be arranged in the outdoor accommodation space.

[0112] In the present application, an outdoor air inlet may be provided on the outdoor housing. The outdoor air inlet may be connected to the outdoor accommodation space. The outdoor air inlet may be used to introduce outdoor air into the outdoor accommodation space.

[0113] The outdoor housing may be provided with an outdoor air outlet, which may be connected to the outdoor accommodation space, and may be used to lead the air in the outdoor accommodation space out of the outdoor accommodation space.

[0114] The rotation of the outdoor fan causes outdoor air to enter the outdoor accommodation space from the outdoor air inlet to exchange heat with the outdoor heat exchanger, and the outdoor air after heat exchange flows out of the outdoor accommodation space from the outdoor air outlet.

[0115] In the present application, the air conditioner may include a compressor. The compressor may be arranged in the outdoor accommodation space.

[0116] In the present application, the air conditioner may include a throttling device. The throttling device is used for throttling. The throttling device may be arranged in the outdoor accommodation space.

[0117] In the present application, of both the indoor heat exchanger and the outdoor heat exchanger, one is a condenser and the other is an evaporator.

[0118] In this application, the air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, a throttling device 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.

[0119] In the present application, the compressor compresses the refrigerant gas in a low-temperature and low-pressure state and discharges the refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser.

[0120] In this application, the condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0121] In the present application, the throttle device expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant.

[0122] In this application, the evaporator evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low temperature and low pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the whole cycle, the air conditioner can adjust the temperature of the indoor space.

[0123] In the present application, when the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0124] In small spaces such as kitchens, bathrooms, small bedrooms, storage rooms, and convenience stores, the indoor wall space is very limited. For example, the kitchen wall is surrounded by range hoods, cabinets, windows, doors connecting to the living room, and refrigerators. There is a ceiling on the top of the wall. If an air conditioner is to be installed, this small space scenario will limit the size of the air conditioner and the air inlet and outlet.

[0125] A conventional wall-mounted air conditioner indoor unit includes a casing, an air inlet and an air outlet are arranged on the casing, an indoor heat exchanger is arranged in the casing, the air inlet is arranged at the top of the casing, and the air outlet is arranged at the front lower part of the casing. The casing also includes a front volute tongue and a rear volute tongue and a volute tongue air duct arranged between the front volute tongue and the rear volute tongue. When the air conditioner indoor unit is working, air enters the casing from the indoor air inlet and then flows out from the indoor air outlet through the volute tongue air duct, which requires a certain height of air inlet space to be reserved at the top of the casing; however, in the kitchen scene, since there will be a ceiling on the top of the kitchen and the height space of the kitchen is insufficient, the wall-mounted air conditioner indoor unit is required to be installed close to the ceiling to save space, but after the conventional wall-mounted unit is installed close to the ceiling, the air inlet of the wall-mounted air conditioner indoor unit will be blocked and air cannot enter.

[0126] In the prior art, some air conditioner indoor units have an air inlet at the bottom of the air conditioner and an air outlet at the front side of the air conditioner, so that the air is inletted from the bottom of the air conditioner and outletted from the front side, and the air inlet is not blocked when the air conditioner is installed close to the ceiling. However, the openings provided at the front and rear volute tongues are relatively large, so that the gap between the front and rear volute tongues and the indoor fan causes a large air volume loss, reduces the air volume, and affects the air outlet effect.

[0127] In the present application, a plane perpendicular to the length direction of the main body may be defined as a first plane.

[0128] In this application, reference is made to Figure 1-Figure 3 , the housing 1 may include a front volute tongue 121 .

[0129] In this application, reference is made to Figure 1-Figure 3 , the housing 1 may include a rear volute tongue 122 .

[0130] In this application, reference is made to Figure 1-Figure 3 , a volute tongue air duct 123 may be provided in the casing. The volute tongue air duct may be located between the front volute tongue and the rear volute tongue.

[0131] In the present application, the indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger. The air after heat exchange with the indoor heat exchanger flows to the indoor air outlet through the volute air duct and flows out of the first cavity from the indoor air outlet.

[0132] In this application, reference is made to Figure 4 The indoor fan may include an indoor fan 221.

[0133] In the present application, the indoor fan may be at least partially disposed in the volute-tongue air duct.

[0134] In the present application, the indoor fan may be arranged along the length direction of the main body. The rotation axis of the indoor fan may be parallel to the length direction of the main body.

[0135] In the present application, the indoor fan may be a cross-flow fan. The indoor fan may be a cross-flow fan.

[0136] In the present application, the indoor fan may include a fan motor. The fan motor is arranged on one side of the indoor fan in the length direction of the main body. The fan motor may be connected to the indoor fan. The fan motor drives the indoor fan to rotate.

[0137] In the present application, the fan motor may be disposed at one end of the indoor fan in the length direction.

[0138] In this application, reference is made to Figure 4 The front volute tongue may include a front volute tongue air duct surface 1211. The front volute tongue air duct surface may be used to enclose a volute tongue air duct.

[0139] In this application, reference is made to Figure 4 The rear volute tongue may include a rear volute tongue air duct surface 1221. The rear volute tongue air duct surface may be used to enclose a volute tongue air duct.

[0140] In this application, reference is made to Figure 4 On the flow path of air from the indoor air inlet to the indoor air outlet, the point on the front volute tongue air duct surface closest to the indoor air inlet may be the front volute tongue first point D1.

[0141] In the present application, the line connecting the first point D1 of the front volute tongue and the rotating shaft of the indoor fan may be the first line X1.

[0142] In this application, reference is made to Figure 4 On the flow path of air from the indoor air inlet to the indoor air outlet, the point on the rear volute tongue air duct surface closest to the indoor air inlet can be the rear volute tongue first point D2.

[0143] In the present application, the line connecting the first point D2 of the rear volute tongue and the rotating shaft of the indoor fan may be the second line X2.

[0144] In this application, reference is made to Figure 4 , the angle between the projections of the first connecting line and the second connecting line on the first plane may be a first angle α1.

[0145] In the present application, the first angle α1≤the first parameter value. The first parameter value may be any value between 170°-180°. The first parameter value may be 180°, that is, α1≤180°, so that the first angle is not too large, and the gap between the rear volute tongue and the front volute tongue and the indoor fan can be reduced, thereby reducing the air volume loss and ensuring a certain air volume.

[0146] In the present application, the first angle α1≥the second parameter value. The second parameter value may be any value between 110°-130°. The second parameter value may be 120°, that is, α1≥120°, so that the first angle is not too small, the air intake volume of the snail tongue air duct can be guaranteed, the air intake volume of the air conditioner indoor unit is not too small, and the ability to resist wind resistance can be improved.

[0147] In this application, reference is made to Figure 5 The main body may include a water receiving pan 23. The water receiving pan may be located in the first cavity. The water receiving pan may be located below the indoor heat exchanger. The water receiving pan is used to receive condensed water flowing down from the indoor heat exchanger. The water receiving pan may be located on the upper side of the indoor air inlet.

[0148] In this application, reference is made to Figure 5 The indoor heat exchanger 21 may include at least a first-stage heat exchanger 211 .

[0149] In the present application, the first section heat exchanger may be arranged along the length direction of the main body. The length direction of the first section heat exchanger may be parallel to the length direction of the main body.

[0150] In the present application, the width direction of the first section heat exchanger may be from the bottom end of the first section heat exchanger to the top end of the first section heat exchanger.

[0151] In the present application, in the front-rear direction of the main body, the bottom end of the first-stage heat exchanger is located behind the top end of the first-stage heat exchanger.

[0152] In this application, reference is made to Figure 5 , the indoor heat exchanger may include at least a second stage heat exchanger 212 .

[0153] In the present application, the second section heat exchanger may be arranged along the length direction of the main body. The length direction of the second section heat exchanger may be parallel to the length direction of the main body.

[0154] In the present application, the width direction of the second section heat exchanger may be from the bottom end of the second section heat exchanger to the top end of the second section heat exchanger.

[0155] In the present application, in the front-rear direction of the main body, the bottom end of the second-stage heat exchanger may be located in front of the top end of the second-stage heat exchanger.

[0156] In the present application, the second stage heat exchanger may be located after the first stage heat exchanger.

[0157] In the present application, the indoor fan may be located above the bottom end of the first stage heat exchanger and the bottom end of the second stage heat exchanger.

[0158] In the present application, the indoor heat exchanger includes a first section heat exchanger and a second section heat exchanger, and the indoor fan is arranged above the indoor heat exchanger, which can make full use of the space in the height direction of the main body, reduce the size in the height direction of the main body, save installation space, and facilitate installation.

[0159] In this application, reference is made to Figure 5 The angle between the width direction of the first section heat exchanger and the horizontal plane can be a second angle α2.

[0160] In the present application, the second angle ≥ the third parameter value. The third parameter value can be any value between 45°-55°. The third parameter value can be 45°, that is, α2 ≥ 45°, so that the inclination of the first section of the heat exchanger is large enough to facilitate the drainage of the condensed water on the first section of the heat exchanger, improve the drainage effect of the first section of the heat exchanger, and significantly reduce the attenuation of the performance of the first section of the heat exchanger by the condensed water. In addition, the condensed water on the first section of the heat exchanger flows to the bottom of the first section of the heat exchanger to avoid direct dripping from a section of the first section of the heat exchanger close to the top, so as to reduce the front and rear dimensions of the water receiving tray, reduce the shielding of the water receiving tray to the indoor air inlet, increase the air intake area, and increase the air intake volume.

[0161] In this application, reference is made to Figure 5 , the angle between the width direction of the second section heat exchanger and the horizontal plane can be a third angle α3.

[0162] In the present application, the third angle ≥ the fourth parameter value. The fourth parameter value can be any value between 45°-55°. The fourth parameter value can be 45°, that is, α3 ≥ 45°, so that the inclination of the second section heat exchanger is large enough to facilitate the drainage of the condensed water on the second section heat exchanger, improve the drainage effect of the second section heat exchanger, and significantly reduce the attenuation of the performance of the second section heat exchanger by the condensed water. In addition, the condensed water on the second section heat exchanger flows to the bottom of the second section heat exchanger to avoid direct dripping of the second section heat exchanger near the top, so as to reduce the front and rear dimensions of the water receiving tray, reduce the shielding of the water receiving tray to the indoor air inlet, increase the air intake area, and increase the air intake volume.

[0163] In this application, reference is made to Figure 5 The angle between the width direction of the first section heat exchanger and the width direction of the second section heat exchanger may be a fourth angle α4. The fourth angle may be toward the indoor fan.

[0164] In the present application, the fourth angle ≤ the fifth parameter value. The fifth parameter value can be any value between 80°-90°. The fifth parameter value can be 90°, that is, α4≤90°, which can prevent the fourth angle from being too large, reduce the size of the main body in the front-to-back direction, and make the overall size of the main body in the front-to-back direction smaller, so that it is convenient to install in a small space such as a kitchen, improve the possibility and convenience of installing an air conditioner indoor unit in a small space, and the air conditioner indoor unit can be installed in a narrow space such as above a window or door.

[0165] In this application, reference is made to Figure 6 The distance between the projections of the first point D1 of the front volute tongue and the first point D2 of the rear volute tongue on the first plane is the first distance L1.

[0166] In this application, reference is made to Figure 6 The front volute tongue may include a front volute tongue air outlet section 1212.

[0167] In the present application, on the flow path of air from the indoor air inlet to the indoor air outlet, the front volute tongue air outlet section is located at one end of the front volute tongue close to the indoor air outlet.

[0168] In this application, reference is made to Figure 6 The rear volute tongue may include a rear volute tongue air outlet section 1222.

[0169] In the present application, on the flow path of air from the indoor air inlet to the indoor air outlet, the rear volute tongue air outlet section is located at one end of the rear volute tongue close to the indoor air outlet.

[0170] In this application, reference is made to Figure 6 The minimum distance between the front volute tongue air outlet section and the rear volute tongue air outlet section can be the second distance L2.

[0171] In the present application, the sixth parameter value is ≤ L2 / L1. The sixth parameter value can be any value between 1 / 4 and 2 / 5. The sixth parameter value can be 1 / 3, that is, L2 / L1≥1 / 3, to avoid a large difference between the second distance and the first distance, to ensure the air volume and the resistance capacity.

[0172] In the present application, L2 / L1≤the seventh parameter value. The seventh parameter value may be any value between 3 / 5 and 3 / 4. The seventh parameter value may be 2 / 3, that is, L2 / L1≤2 / 3, to avoid the difference between the second distance and the first distance being too small, to ensure the air volume and the resistance capacity.

[0173] In the present application, the top of the front volute tongue air outlet section is located at the rear end of the front volute tongue air outlet section. The minimum distance from the rear end of the front volute tongue air outlet section to the rear volute tongue air outlet section is the second distance L2.

[0174] In this application, reference is made to Figure 7The front volute tongue may include a front volute tongue air inlet section 1213. On the flow path of air from the indoor air inlet to the indoor air outlet, the front volute tongue air inlet section may be located at one end of the front volute tongue close to the indoor air inlet.

[0175] In this application, reference is made to Figure 7 The end of the front volute tongue air inlet section away from the indoor air inlet is the top of the front volute tongue air inlet section.

[0176] In this application, reference is made to Figure 7 The front volute tongue may include a front volute tongue connecting section 1214. One end of the front volute tongue connecting section is connected to the top of the front volute tongue air inlet section. The other end of the front volute tongue connecting section may be connected to the rear end of the front volute tongue air outlet section.

[0177] In this application. Figure 7 The minimum distance between the connection point of the front volute tongue connecting section and the front volute tongue air outlet section and the rear volute tongue is the second distance L2.

[0178] In the present application, when the indoor fan is close to the indoor heat exchanger, abnormal noise will be generated.

[0179] In this application, reference is made to Figure 8 The minimum gap between the indoor fan and the first stage heat exchanger 211 may be the first gap G1.

[0180] In the present application, the eighth parameter value is ≤ the first gap G1. The eighth parameter value can be any value between 6 mm and 10 mm. The eighth parameter value can be 8 mm, that is, G1 ≥ 8 mm, to avoid the first gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0181] In the present application, the first gap G1≤9th parameter value. The ninth parameter value can be any value between 28mm-32mm. The ninth parameter value can be 30mm, that is, G1≤30mm, to avoid the first gap being too large, reduce the occupation of the first section heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the air conditioner indoor unit can be installed in a small space, and reduce costs.

[0182] In this application, reference is made to Figure 8 The minimum gap between the indoor fan and the second stage heat exchanger 212 may be the second gap G2.

[0183] In the present application, the tenth parameter value is ≤ the second gap G2. The tenth parameter value is any value between 6 mm and 10 mm. The tenth parameter value can be 8 mm, that is, G2 ≥ 8 mm, to avoid the second gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0184] In the present application, the second gap G2≤the eleventh parameter value. The eleventh parameter value can be any value between 28mm-32mm. The eleventh parameter value can be 30mm, that is, G2≤30mm, to avoid the second gap being too large, reduce the space occupied by the second section heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the air conditioner indoor unit can be installed in a small space, and reduce costs.

[0185] In the present application, the housing may include a volute tongue, the volute tongue may include a front volute tongue, and the volute tongue may include a rear volute tongue.

[0186] In this application, reference is made to Figure 8 The gap between the indoor fan and the volute tongue can be the third gap G3.

[0187] In the present application, the third gap G3≥the twelfth parameter value. The twelfth parameter value can be any value between 3mm and 5mm. The twelfth parameter value can be 4mm, that is, G3≥4mm, so that the third gap G3 is not too small to avoid noise.

[0188] In the present application, the thirteenth parameter value is ≥ the third gap G3. The thirteenth parameter value can be any value between 8 mm and 12 mm. The thirteenth parameter value can be 10 mm, that is, G3 ≤ 10 mm, so that the third gap G3 is not too large, and the air volume loss can be reduced. The air volume is guaranteed.

[0189] In this application, reference is made to Figure 5 , the second angle ≥ the fourteenth parameter value. The fourteenth parameter value is any value between 15°-25°. The fourteenth parameter value can be 20°, that is, α2≥20, so that the second angle is not too small, which is convenient for the drainage of condensed water on the first section of the heat exchanger, improves the drainage effect of the first section of the heat exchanger, and can significantly reduce the attenuation of the performance of the first section of the heat exchanger by condensed water. In addition, the condensed water on the first section of the heat exchanger flows to the bottom of the first section of the heat exchanger to avoid direct dripping from a section near the top of the first section of the heat exchanger, so as to reduce the size of the water receiving tray, reduce the shielding of the water receiving tray to the indoor air inlet, increase the air inlet area, and increase the air intake volume; the size of the main body in the front and rear directions can be reduced.

[0190] In this application, reference is made to Figure 5 , the fifteenth parameter value ≥ the second angle. The fifteenth parameter value is any value between 55°-65°. The fifteenth parameter value can be 60°, that is, α2≤60°, so that the second angle is not too large, reducing the size of the main body in the height direction.

[0191] In this application, reference is made to Figure 5, the third angle ≥ the sixteenth parameter value. The sixteenth parameter value is any value between 15°-25°. The sixteenth parameter value can be 20°, that is, α3 ≥ 20°, so that the third angle is not too small, which is convenient for draining the condensed water on the second section heat exchanger, improving the drainage effect of the second section heat exchanger, and can significantly reduce the attenuation of the performance of the second section heat exchanger by the condensed water, and make the condensed water on the second section heat exchanger flow to the bottom of the second section heat exchanger to avoid direct dripping near the top of the second section heat exchanger, so as to reduce the size of the water receiving tray, reduce the shielding of the water receiving tray to the indoor air inlet, increase the air inlet area, and increase the air intake volume; the size of the main body in the front and rear directions can be reduced.

[0192] In this application, reference is made to Figure 5 , the seventeenth parameter value ≥ the third angle. The seventeenth parameter value is any value between 55°-65°. The seventeenth parameter value can be 60°, that is, α3≤60°, so that the third angle is not too large, reducing the size of the main body in the height direction.

[0193] In this application, reference is made to Figure 4-Figure 8 The top end of the first heat exchanger can be located in front of the bottom end of the front volute tongue air inlet section.

[0194] In this application, reference is made to Figure 4-Figure 8 In the height direction of the main body, the top end of the first section heat exchanger can be located above the bottom end of the front volute tongue air inlet section.

[0195] In this application, reference is made to Figure 4-Figure 8 There is a gap between the first section heat exchanger and the bottom end of the front volute tongue air inlet section, which can ensure that the air in the top area of ​​the first section heat exchanger passes through the gap between the first section heat exchanger and the bottom end of the front volute tongue air inlet section and enters the volute tongue air duct, which can make full use of the heat exchange effect at the top of the first section heat exchanger, increase the heat exchange area, and improve the heat exchange effect.

[0196] In this application, reference is made to Figure 4-Figure 8 The rear volute tongue may include a rear volute tongue air inlet section. On the flow path of air from the indoor air inlet to the indoor air outlet, the rear volute tongue air inlet section may be located at one end of the rear volute tongue close to the indoor air inlet.

[0197] In this application, reference is made to Figure 4-Figure 8 The top end of the second heat exchanger can be located behind the rear volute tongue air inlet section.

[0198] In this application, reference is made to Figure 4-Figure 8 In the height direction of the main body, the top end of the second section heat exchanger can be located above the bottom end of the rear volute tongue air inlet section.

[0199] In this application, reference is made to Figure 4-Figure 8There is a gap between the second section heat exchanger and the bottom end of the rear volute tongue air inlet section, which can ensure that the air in the top area of ​​the second section heat exchanger passes through the gap between the second section heat exchanger and the bottom end of the rear volute tongue air inlet section and enters the volute tongue air duct, which can make full use of the heat exchange effect at the top of the second section heat exchanger, increase the heat exchange area, and improve the heat exchange effect.

[0200] In the present application, the bottom end of the first-stage heat exchanger and the bottom end of the second-stage heat exchanger may be connected.

[0201] In this application, reference is made to Figure 4-Figure 8 The bottom end of the first heat exchanger and the bottom end of the second heat exchanger can be spaced apart.

[0202] In the present application, in the height direction of the main body, the lowest point of the first-stage heat exchanger may be higher than the lowest point of the second-stage heat exchanger.

[0203] In this application, reference is made to Figure 9-10 The water receiving tray may include a water receiving chamber 231. The top of the water receiving chamber is provided with a water receiving chamber opening 2311. The bottom end of the first section heat exchanger may be inserted into the water receiving chamber.

[0204] In the present application, the water receiving tray may include a water receiving surface 232 disposed at the bottom of the water receiving cavity. The bottom end of the first stage heat exchanger is disposed on the water receiving surface.

[0205] In the present application, the bottom end of the second stage heat exchanger can be inserted into the water receiving chamber.

[0206] In the present application, the bottom end of the second-stage heat exchanger may be located on the water receiving surface.

[0207] In the present application, the housing may include a bottom plate. The bottom plate may be arranged at the bottom of the housing.

[0208] In the present application, the indoor air inlet may be formed on the bottom plate.

[0209] In the present application, a first installation opening 1241 may be formed on the bottom plate. The first installation opening may penetrate the bottom plate in the thickness direction of the bottom plate.

[0210] In this application, reference is made to Figure 9-10 A first mounting opening may be formed at the bottom of the housing.

[0211] In this application, reference is made to Figure 9-10 The housing may include an air inlet grille 125. An indoor air inlet may be formed on the air inlet grille. The air inlet grille may be installed in the first installation opening 1241.

[0212] In the present application, the main body may include a first filter screen. The first filter screen is used to filter the air entering the first cavity.

[0213] In the present application, the first filter screen can be installed on the housing. The first filter screen can be installed on the inner side of the indoor air inlet.

[0214] In the present application, the first filter screen may be installed on the bottom plate 124 .

[0215] In the present application, the first filter can be installed on the air inlet grille.

[0216] In the present application, the main body may include an oil fume removal filter. The oil fume removal filter is used to filter oil fume.

[0217] In the present application, the oil fume removal filter can be arranged on the inner side of the indoor air inlet.

[0218] In the present application, the oil fume removal filter can be connected to the bottom plate.

[0219] In the present application, the oil fume removal filter can be connected to the air inlet grille.

[0220] In the present application, the oil fume removal filter can be connected to the first filter.

[0221] In this application, reference is made to Figure 9-10 The housing may include a front panel 126. The front panel 126 may be disposed at the front side of the housing. The front panel 124 may be formed with an indoor air outlet.

[0222] In this application, reference is made to Figure 9-10 The main body may include an outer air guide plate 31. The outer air guide plate 31 may be rotatably connected to the indoor air outlet, and the outer air guide plate may be used to open or close the indoor air outlet.

[0223] In the present application, the main body may include a first air guide plate driving device. The first air guide plate driving device is connected to the outer air guide plate, and the first air guide plate driving device drives the outer air guide plate to rotate.

[0224] In this application, reference is made to Figure 8-Figure 10 The main body may include an inner air guide plate 32. The inner air guide plate 32 may be located in the housing 1. The inner air guide plate is located on a side of the outer air guide plate close to the indoor fan. The inner air guide plate is used to change the outflow direction of air.

[0225] In the present application, the main body may include a second air deflector driving device. The second air deflector driving device is connected to the inner air deflector, and the second air deflector driving device drives the inner air deflector to rotate.

[0226] In this application, reference is made to Fig.11 When the air conditioner indoor unit is a hanging type air conditioner indoor unit, the air conditioner indoor unit can be hung on the wall, the air conditioner indoor unit can be installed close to the ceiling, and a first filter and / or a fume filter can be arranged inside the indoor air inlet. An outer air guide plate and / or an inner air guide plate can be arranged at the indoor air outlet.

[0227] In the present application, when the air conditioner indoor unit is a hanging type air conditioner indoor unit, the air conditioner indoor unit can be hung on the wall, the air conditioner indoor unit can have a certain gap with the top, a first filter and / or a fume filter can be arranged inside the indoor air inlet, and an outer air guide plate and / or an inner air guide plate can be arranged at the indoor air outlet.

[0228] In this application, reference is made to Figure 12-14 The air conditioner indoor unit can be a built-in air conditioner indoor unit. The air conditioner indoor unit can be embedded in the ceiling 903.

[0229] In this application, reference is made to Figure 12-14 A first ceiling installation opening 9031 may be provided on the ceiling 903 .

[0230] In the present application, the indoor unit of the air conditioner may include a ceiling air inlet grille 33. The ceiling air inlet grille may be installed in a first installation opening of the ceiling.

[0231] In this application, reference is made to Figure 12-14 The ceiling air inlet grille may be formed with a grille air outlet 331. The indoor fan allows the air below the ceiling to enter the first cavity through the grille air outlet and the indoor air inlet.

[0232] In the present application, when there is a ceiling air inlet grille, the first filter can be arranged on the upper side of the grille air outlet or on the inner side of the indoor air inlet.

[0233] In the present application, the air conditioner indoor unit may include a second filter. The second filter is used to filter air. The second filter may be arranged on the inner side of the grille air outlet.

[0234] In the present application, when the second filter is arranged on the inner side of the grille air outlet, the first filter may be arranged on the inner side of the indoor air inlet, or the first filter may not be arranged on the indoor air inlet.

[0235] In the present application, when there is a ceiling air inlet grille, the oil removal filter can be connected to the ceiling air inlet grille. The oil removal filter can be arranged on the inner side of the grille air outlet.

[0236] In the present application, the oil removal filter can be connected to the second filter or the first filter at the ceiling air inlet grille.

[0237] In this application, reference is made to Figure 12-14 The indoor unit of the air conditioner may include an air outlet housing 34. The air outlet housing may be at least partially disposed above the ceiling. The air outlet housing may be connected to the housing. The air outlet housing may be located at the indoor air outlet.

[0238] In the present application, an air outlet duct 341 may be formed in the air outlet shell. The air outlet duct may be connected to the snail tongue air duct through the indoor air outlet. A first vent 342 may be provided at the first end of the air outlet shell away from the indoor air outlet.

[0239] In the present application, the indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger. The air after heat exchange with the indoor heat exchanger flows into the outlet duct through the volute air duct and the indoor air outlet in sequence and flows out of the outlet duct through the first vent.

[0240] The air outlet shell is arranged, and can guide the air to the space below the suspended ceiling even after the main body is embedded in the suspended ceiling, so that the space inside the suspended ceiling can be fully utilized, and the main body is prevented from occupying the space below the suspended ceiling, which is suitable for the needs of small spaces.

[0241] In this application, reference is made to Figure 12-14 A second ceiling installation opening 9032 may be provided on the suspended ceiling.

[0242] In the present application, the air conditioner indoor unit may include an air outlet device 35. The air outlet device 35 is arranged in the second installation opening of the suspended ceiling.

[0243] The top end of the air outlet device is connected to the air outlet housing. A first air outlet 351 is formed at the bottom end of the air outlet device.

[0244] In the present application, the first air outlet 351 is flush with the bottom surface of the suspended ceiling.

[0245] In this application, reference is made to Figure 12-14 The first air outlet 351 is located below the bottom surface of the suspended ceiling.

[0246] In the present application, the outer air guide plate may be disposed at the first air outlet. The outer air guide plate is used to open or close the first air outlet.

[0247] In the present application, the inner air guide plate is arranged on the inner side of the first air outlet.

[0248] In this application, reference is made to Figure 12-14 The air outlet device may include an air outlet panel 352 disposed at its bottom. The first air outlet may be formed on the air outlet panel.

[0249] The air outlet panel can be located below the suspended ceiling.

[0250] In the present application, an exhaust air duct 353 may be formed in the air outlet device. The exhaust air duct may be connected to the air outlet air duct. The exhaust air duct is connected to the first air outlet.

[0251] Driven by the indoor fan, the heat-exchanged air enters the air outlet duct from the indoor air outlet, enters the exhaust channel through the air outlet duct, and is then discharged from the first air outlet.

[0252] In the present application, the inner air guide plate may be located in the exhaust air duct.

[0253] In the present application, the air outlet device can be fixed on the air outlet housing. The air outlet device can be snap-connected with the air outlet housing.

[0254] In the present application, the air outlet device can be fixed on the suspended ceiling.

[0255] In the present application, the air outlet device may include a first hanging portion of the air outlet panel.

[0256] The top end of the air outlet device can be inserted into the air outlet shell, and the air outlet device is hung on the suspended ceiling or fixed on the suspended ceiling through the first hanging part of the air outlet panel.

[0257] In this application, reference is made to Fig.15 The second ceiling installation port and the first ceiling installation port can be located in two different rooms, so that the air in one room can be sucked into the other room. The air in other rooms can be sucked in and released into the kitchen, which can avoid the wind entering the air conditioner indoor unit from the kitchen, reduce the oil pollution entering the air conditioner indoor unit, and cool the kitchen.

[0258] In the present application, when the outer air guide plate is installed at the indoor air outlet, the outer air guide plate may have a first position. When the outer air guide plate is in the first position, the outer air guide plate opens the indoor air outlet, and the outer air guide plate is arranged horizontally to prevent air from blowing people.

[0259] In the present application, when the outer air guide plate is installed at the indoor air outlet, the outer air guide plate may have a second position. When the outer air guide plate is in the second position, the outer air guide plate opens the indoor air outlet, the outer air guide plate is tilted, and the air outlet end of the outer air guide plate is the bottom end of the outer air guide plate, so that air can blow into people.

[0260] In the present application, when the inner air guide plate is installed at the indoor air outlet, the inner air guide plate may have a first position. When the inner air guide plate is in the first position, the inner air guide plate is arranged horizontally to prevent air from blowing on people.

[0261] In the present application, when the inner air guide plate is installed at the indoor air outlet, the inner air guide plate can have a second position. When the inner air guide plate is in the second position, the inner air guide plate is tilted, and the air outlet end of the inner air guide plate is the bottom end of the inner air guide plate, so that air can blow people.

[0262] In this application, reference is made to Fig.16 The water receiving tray may include a first section water receiving tray 233. The first section water receiving tray may be disposed at one end of the water receiving tray along the length direction of the main body.

[0263] In this application, reference is made to Fig.16The water receiving tray may include a second water receiving tray 234. The second water receiving tray is connected to the first water receiving tray. The second water receiving tray may be arranged at the other end of the water receiving tray along the length direction of the main body.

[0264] In this application, reference is made to Fig.16 The second water receiving tray is provided with a drainage hole 2341.

[0265] In the present application, in the front-to-rear direction of the main body, the rear end of the second-stage water receiving tray is located behind the first-stage water receiving tray.

[0266] The existing air conditioner indoor unit with bottom air inlet and front air outlet is generally set to multiple stages, with a limited heat exchange area, and it is easy to increase the space occupied by the indoor heat exchanger in the first cavity, making the front-to-back dimensions and height dimensions of the main body larger, the cost is high, and it is not conducive to installation in small spaces such as kitchens, and is not conducive to installation in narrow spaces such as above doors and windows in small spaces.

[0267] In this application, reference is made to Fig.17 , along the width direction of the indoor heat exchanger, the indoor heat exchanger 21 may be arc-shaped.

[0268] In this application, reference is made to Fig.17 , along the width direction of the indoor heat exchanger, the indoor heat exchanger may protrude toward a side of the indoor heat exchanger away from the indoor fan.

[0269] In this application, reference is made to Fig.17 One end of the indoor heat exchanger in the width direction may be located in front of the indoor fan, and the other end of the indoor heat exchanger in the width direction may be located behind the indoor fan.

[0270] In this application, reference is made to Fig.17 , along the width direction of the indoor heat exchanger, the lowest point of the indoor heat exchanger is located below the indoor fan. Along the width direction of the indoor heat exchanger, the lowest point of the indoor heat exchanger is located between the two ends of the indoor heat exchanger in the width direction.

[0271] In the present application, the indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger, and the air after heat exchange with the indoor heat exchanger flows out of the first cavity through the indoor air outlet. The indoor fan may include an indoor fan.

[0272] In this application, reference is made to Fig.17 The air conditioner indoor unit may include a water receiving pan 23. The water receiving pan may be arranged in the first cavity, and the water receiving pan may be arranged below the indoor heat exchanger to receive condensed water flowing down from the indoor heat exchanger.

[0273] In this application, reference is made to Fig.17 , the indoor heat exchanger may have a heat exchanger windward surface 213 .

[0274] In the present application, along the width direction of the indoor heat exchanger, the windward surface of the heat exchanger may be arc-shaped.

[0275] In the present application, the windward surface of the heat exchanger may have a windward surface contour line 2131 arranged along the width direction of the indoor heat exchanger. The windward surface contour line 2131 may be arc-shaped.

[0276] In this application, reference is made to Fig.18 When the windward surface contour line is an arc, in the front-rear direction of the main body, the angle between the tangent line of the windward surface contour line in front of the water receiving tray and the horizontal plane may be a fifth angle α5.

[0277] In the present application, the fifth angle α5≥the eighteenth parameter value. The eighteenth parameter value can be any value between 45°-55°. The eighteenth parameter value can be 45°, that is, α5≥45°, so that the fifth angle is large enough, so that the inclination of the windward surface of the indoor heat exchanger located in front of the water receiving pan is large enough, which is convenient for the indoor heat exchanger to drain the condensed water on the front of the water receiving pan, improve the drainage effect of the heat exchanger, and significantly reduce the attenuation of the heat exchanger performance by the condensed water. In addition, the condensed water on the indoor heat exchanger flows to the bottom of the indoor heat exchanger to avoid direct dripping of the section of the indoor heat exchanger near the top of the front end, so as to reduce the front and rear dimensions of the water receiving pan, reduce the shielding of the indoor air inlet by the water receiving pan, increase the air inlet area, and increase the air intake volume; the dimensions of the front and rear directions of the main body can be reduced.

[0278] In the present application, the water receiving tray may include a first section water receiving tray 213. The first section water receiving tray is disposed at one end of the water receiving tray along the length direction of the main body.

[0279] In this application, reference is made to Fig.18 When the windward surface contour line is an arc, in the front-rear direction of the main body, the angle between the tangent line of the windward surface contour line segment located behind the first water receiving tray and the horizontal plane may be a sixth angle α6.

[0280] In the present application, the sixth angle α6≥the nineteenth parameter value. The nineteenth parameter value can be any value between 45°-55°. The nineteenth parameter value can be 45°, that is, α6≥45°, so that the sixth angle is large enough, so that the inclination of the windward surface of the indoor heat exchanger located at the rear section of the first water receiving pan is large enough, which is convenient for the indoor heat exchanger to drain the condensed water on the rear section of the first water receiving pan, improve the drainage effect of the heat exchanger, and significantly reduce the attenuation of the heat exchanger performance by the condensed water. In addition, the condensed water on the indoor heat exchanger flows to the bottom of the indoor heat exchanger to avoid direct dripping of the section of the indoor heat exchanger near the top of the rear end, so as to reduce the front and rear dimensions of the first water receiving pan, reduce the shielding of the indoor air inlet by the first water receiving pan, increase the air inlet area, and increase the air intake volume; the dimensions of the main body in the front and rear directions can be reduced.

[0281] In the present application, the indoor heat exchanger may have one stage.

[0282] In the present application, the indoor heat exchanger has multiple sections, and the multiple sections of the indoor heat exchanger form an arc-shaped indoor heat exchanger.

[0283] In this application, reference is made to Figure 12-Figure 15 When the indoor heat exchanger is arc-shaped along the width direction of the indoor heat exchanger and the indoor heat exchanger protrudes toward the side of the indoor heat exchanger away from the indoor fan, the indoor unit of the air conditioner may include an air outlet housing. The air outlet housing is connected to the housing. The air outlet housing is located at the indoor air outlet. An air outlet duct is formed in the air outlet housing. The air outlet duct is connected to the first cavity through the indoor air outlet. A first vent is provided at a first end of the air outlet housing away from the indoor air outlet.

[0284] The indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger. The air after heat exchange with the indoor heat exchanger flows into the air outlet duct through the indoor air outlet and flows out of the air outlet duct through the first vent.

[0285] In this application, reference is made to Fig.19 In the front-to-rear direction of the main body, the minimum gap between the part of the indoor heat exchanger located behind the indoor fan rotation axis and the indoor fan may be a fourth gap G4.

[0286] In the present application, the fourth gap G4 ≥ the twentieth parameter value. The twentieth parameter value can be any value between 6 mm and 10 mm. The twentieth parameter value can be 8 mm, that is, G4 ≥ 8 mm, to avoid the fourth gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0287] In the present application, the twenty-first parameter value is ≥ the fourth gap G4. The twenty-first parameter value can be any value between 28 mm and 32 mm. The twenty-first parameter value can be 30 mm, that is, G4 ≤ 30 mm, to avoid the fourth gap being too large, reduce the space occupied by the indoor heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the indoor unit of the air conditioner can be installed in a small space, and reduce costs.

[0288] In this application, reference is made to Fig.19 In the front-to-rear direction of the main body, the minimum gap between the part of the indoor heat exchanger located in front of the indoor fan rotation axis and the indoor fan may be a fifth gap G5.

[0289] In the present application, the fifth gap G5 ≥ the twenty-second parameter value. The twenty-second parameter value may be any value between 6 mm and 10 mm. The twenty-second parameter value may be 8 mm, that is, G5 ≥ 8 mm, to avoid the fifth gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0290] In the present application, the twenty-third parameter value is ≥ the fifth gap G5. The twenty-third parameter value can be any value between 28 mm and 32 mm. The twenty-third parameter value can be 30 mm, that is, G5 ≤ 30 mm, to avoid the fifth gap being too large, reduce the space occupied by the indoor heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the indoor unit of the air conditioner can be installed in a small space, and reduce costs.

[0291] In the present application, the absolute value of the difference between the fourth gap G4 and the fifth gap G5 may be the first difference C1.

[0292] In the present application, the first difference C1≤the twenty-fourth parameter value. The twenty-fourth parameter value may be any value between 8 mm and 12 mm. The twenty-fourth parameter value may be 10 mm, that is, C1≤10 mm, which may reduce the distance difference between different positions of the arc-shaped indoor heat exchanger and the indoor fan, thereby making the airflow passing through the indoor heat exchanger more uniform, and preventing uneven shunt of the indoor heat exchanger caused by uneven local airflow, temperature differences between different positions of the indoor heat exchanger, and condensation problems caused by large temperature differences at different positions.

[0293] In the present application, in the height direction of the main body, the lowest point of the indoor heat exchanger is located above the highest point of the water receiving pan.

[0294] In this application, reference is made to Fig.19 In the height direction of the main body, the distance between the lowest point of the indoor heat exchanger and the highest point of the water receiving pan is a first distance L1.

[0295] In the present application, the first distance L1 ≥ the twenty-fifth parameter value. The twenty-fifth parameter value can be any value between 4 mm and 6 mm. The twenty-fifth parameter value can be 5 mm, that is, L1 ≥ 5 mm, so that there is a distance between the lowest point of the indoor heat exchanger and the highest point of the water receiving pan, so that there is a sufficient gap between the bottom of the indoor heat exchanger and the water receiving pan, so that air can enter the gap between the water receiving pan and the indoor heat exchanger on both sides of the water receiving pan, so that the bottom of the indoor heat exchanger has a better heat exchange effect, thereby ensuring the heat exchange effect of the indoor heat exchanger.

[0296] In the present application, the water receiving pan includes a water receiving surface. The water receiving surface is used to receive condensed water flowing down from the indoor heat exchanger.

[0297] In this application, reference is made to Fig.19 The distance between the lowest point of the water receiving surface and the lowest point of the indoor heat exchanger in the height direction of the main body is a second distance L2.

[0298] In the present application, the second distance L2 ≥ the twenty-sixth parameter value. The twenty-sixth parameter value is any value between 8 mm and 12 mm. The twenty-sixth parameter value can be 10 mm, that is, L2 ≥ 10 mm, so that there is a distance between the lowest point of the indoor heat exchanger and the lowest point of the water receiving pan, so that there is a sufficient gap between the bottom of the indoor heat exchanger and the bottom of the water receiving surface, so that air can pass through the indoor heat exchanger at the bottom of the indoor heat exchanger, so that the bottom of the indoor heat exchanger has a better heat exchange effect, and the heat exchange effect of the indoor heat exchanger is guaranteed.

[0299] In this application, reference is made to Fig.30 The water receiving tray includes a water receiving cavity for receiving water. The top of the water receiving cavity is provided with a water receiving cavity opening.

[0300] In this application, reference is made to Fig.30 The water receiving surface includes a first water receiving surface 2321. The first water receiving surface can be arranged at the bottom of the water receiving surface. The lowest point of the water receiving surface is located on the first water receiving surface.

[0301] In this application, reference is made to Fig.30 The water receiving tray includes a water receiving tray top surface 235 disposed on the top of the water receiving tray. The highest point of the water receiving tray is located on the water receiving tray top surface.

[0302] In this application, reference is made to Fig. 20 The indoor heat exchanger may include a heat exchanger leeward surface 214 .

[0303] In the present application, along the width direction of the indoor heat exchanger, the leeward surface of the heat exchanger may be arc-shaped.

[0304] In the present application, the leeward surface of the heat exchanger includes a leeward surface first end and a leeward surface second end which are arranged opposite to each other in the width direction of the indoor heat exchanger.

[0305] In the present application, the first end of the leeward surface may be located in front of the first point of the front volute tongue.

[0306] In the present application, the second end of the leeward surface may be located behind the rear volute tongue air duct surface.

[0307] In this application, reference is made to Fig. 20 In the height direction of the main body, the highest point of the first end of the leeward surface is higher than the first point of the front volute tongue, and the distance between the highest point of the first end of the leeward surface and the first point of the front volute tongue is a third distance L3.

[0308] In this application, reference is made to Fig. 20 In the height direction of the main body, the highest point of the second end of the leeward surface is higher than the first point of the rear volute tongue, and the distance between the highest point of the second end of the leeward surface and the first point of the rear volute tongue is a fourth distance L4.

[0309] In the present application, the third distance is ≥ the twenty-seventh parameter value. The twenty-seventh parameter value can be any value between 3 mm and 7 mm. The twenty-seventh parameter value can be 5 mm, that is, L3 ≥ 5 mm, so that the first end of the leeward surface is higher than the first point of the front volute tongue by a certain distance, so as to prevent the air from bypassing the top of the first end of the leeward surface and entering the volute tongue air duct between the front volute tongue and the leeward surface, thereby ensuring the heat exchange effect at the top of the first end of the indoor heat exchanger, and ensuring that the noise is low while not affecting the air volume.

[0310] In the present application, the fourth distance ≥ the twenty-eighth parameter value. The twenty-eighth parameter value can be any value between 8 mm and 12 mm. The twenty-eighth parameter value can be 10 mm, that is, L4 ≥ 10 mm, so that the second end of the leeward surface is higher than the first point of the rear volute tongue by a certain distance, so as to prevent the air from bypassing the top of the second end of the leeward surface and entering the volute tongue air duct between the rear volute tongue and the leeward surface, thereby ensuring the heat exchange effect at the top of the second end of the indoor heat exchanger, and ensuring that the noise is low while not affecting the air volume.

[0311] In this application, reference is made to Figure 12-Figure 15 When the indoor heat exchanger is arc-shaped along the width direction, the indoor unit of the air conditioner may include an air outlet housing. The indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger, and the air after heat exchange with the indoor heat exchanger flows into the air outlet duct through the indoor air outlet and flows out of the air outlet duct through the first vent.

[0312] The air outlet shell is arranged, and can guide the air to the space below the suspended ceiling even after the main body is embedded in the suspended ceiling, so that the space inside the suspended ceiling can be fully utilized, and the main body is prevented from occupying the space below the suspended ceiling, which is suitable for the needs of small spaces.

[0313] The indoor heat exchanger of the existing bottom-inlet and front-outlet air-conditioning indoor unit is generally arranged in two sections, one end is arranged at the front side of the indoor fan, and the other end is arranged at the rear end of the indoor fan, so that the heat exchange area is limited, and the space in front of the indoor fan is not fully utilized, resulting in unreasonable space utilization in the height direction of the main body, serious space waste, small heat exchange area, poor heat exchange effect, and a large height size of the main body, high cost, which is not conducive to installation in small spaces such as kitchens, and is not conducive to installation in narrow spaces such as above doors and windows in small spaces.

[0314] In this application, reference is made to Fig.21 The indoor unit of the air conditioner may include a water receiving pan. The water receiving pan may be used to receive condensed water flowing down from the indoor heat exchanger.

[0315] In this application, reference is made to Fig.21 The indoor heat exchanger may include at least a first stage heat exchanger 211. The bottom end of the first stage heat exchanger and the top end of the first stage heat exchanger may be two ends in the width direction of the first stage heat exchanger.

[0316] In the present application, in the front-rear direction of the main body, the bottom end of the first-stage heat exchanger is located behind the top end of the first-stage heat exchanger.

[0317] In this application, reference is made to Fig.21 The indoor heat exchanger may include at least a second stage heat exchanger 212. The bottom end of the second stage heat exchanger and the top end of the second stage heat exchanger may be two ends of the second stage heat exchanger in the width direction.

[0318] In the present application, in the front-to-rear direction of the main body, the bottom end of the second stage heat exchanger may be located in front of the top end of the second stage heat exchanger. The second stage heat exchanger may be located behind the first stage heat exchanger.

[0319] In this application, reference is made to Fig.21 , the indoor heat exchanger may include at least a third stage heat exchanger 213 .

[0320] The bottom end of the third section heat exchanger and the top end of the third section heat exchanger may be two ends of the third section heat exchanger in the width direction. The third section heat exchanger may be located above the first section heat exchanger.

[0321] In this application, reference is made to Fig.21 , at least part of the indoor air inlet is located in front of the water receiving tray and below the third stage heat exchanger.

[0322] In the present application, the indoor heat exchanger is provided with three sections, and the third section heat exchanger is located above the first section heat exchanger, which can make full use of the space in front of the indoor fan and the space in the height direction, increase the heat exchange area, and improve the heat exchange effect. In addition, the height dimension is not large, and the air conditioner indoor unit can be installed in narrow spaces such as above windows or doors. An indoor air inlet is provided on the front side of the water tray, which is beneficial to the heat exchange between the first section heat exchanger and the third section heat exchanger.

[0323] In this application, reference is made to Fig. 22 When the indoor heat exchanger includes a third section heat exchanger, the angle between the width direction of the first section heat exchanger and the horizontal plane may be a second angle α2.

[0324] In the present application, the second angle ≥ the third parameter value. The third parameter value can be any value between 45°-55°. The third parameter value can be 45°, that is, α2 ≥ 45°, so that the inclination of the first section of the heat exchanger is large enough to facilitate the drainage of the condensed water on the first section of the heat exchanger, improve the drainage effect of the first section of the heat exchanger, and significantly reduce the attenuation of the performance of the first section of the heat exchanger by the condensed water. In addition, the condensed water on the first section of the heat exchanger flows to the bottom of the first section of the heat exchanger to avoid direct dripping from a section of the first section of the heat exchanger close to the top, so as to reduce the front and rear dimensions of the water receiving tray, reduce the shielding of the water receiving tray to the indoor air inlet, increase the air intake area, and increase the air intake volume.

[0325] In this application, reference is made to Fig. 22 When the indoor heat exchanger includes a third section heat exchanger, the angle between the width direction of the second section heat exchanger and the horizontal plane may be a third angle α3.

[0326] In the present application, the third angle ≥ the fourth parameter value. The fourth parameter value can be any value between 45°-55°. The fourth parameter value can be 45°, that is, α3 ≥ 45°, so that the inclination of the second section heat exchanger is large enough to facilitate the drainage of the condensed water on the second section heat exchanger, improve the drainage effect of the second section heat exchanger, and significantly reduce the attenuation of the performance of the second section heat exchanger by the condensed water. In addition, the condensed water on the second section heat exchanger flows to the bottom of the second section heat exchanger to avoid direct dripping of the second section heat exchanger near the top, so as to reduce the front and rear dimensions of the water receiving tray, reduce the shielding of the water receiving tray to the indoor air inlet, increase the air intake area, and increase the air intake volume.

[0327] In this application, reference is made to Fig. 22 , the angle between the width direction of the third section heat exchanger and the horizontal plane can be the seventh angle α7.

[0328] In the present application, the seventh angle ≥ the twenty-ninth parameter value. The twenty-ninth parameter value can be any value between 45°-55°. The twenty-ninth parameter value can be 45°, that is, α7 ≥ 45°, so that the inclination of the third section heat exchanger is large enough to facilitate the drainage of the condensed water on the third section heat exchanger, improve the drainage effect of the third section heat exchanger, and significantly reduce the attenuation of the performance of the third section heat exchanger by the condensed water. In addition, the condensed water on the third section heat exchanger flows to the bottom of the third section heat exchanger and flows to the first section heat exchanger, avoiding direct dripping of the second section heat exchanger near the top, so as to reduce the front and rear dimensions of the water receiving tray, reduce the water receiving tray to block the indoor air inlet, increase the air intake area, and increase the air intake volume.

[0329] In this application, reference is made to Fig. 22 When the indoor heat exchanger includes a third section heat exchanger, the angle between the width direction of the first section heat exchanger and the width direction of the second section heat exchanger may be a fourth angle α4. The fourth angle may be toward the indoor fan.

[0330] In the present application, the fourth angle ≤ the fifth parameter value. The fifth parameter value can be any value between 80°-90°. The fifth parameter value can be 90°, that is, α4≤90°, which can prevent the fourth angle from being too large, reduce the size of the main body in the front-to-back direction, and make the overall size of the main body in the front-to-back direction smaller, so that it is convenient to install in a small space such as a kitchen, improve the possibility and convenience of installing an air conditioner indoor unit in a small space, and the air conditioner indoor unit can be installed in a narrow space such as above a window or door.

[0331] In this application, reference is made to Fig. 22 The angle between the width direction of the first section heat exchanger and the width direction of the third section heat exchanger may be an eighth angle α8. The eighth angle α8 may be toward the indoor fan.

[0332] In the present application, the eighth angle>the 30th parameter value. The 30th parameter value is any value between 90°-110°. The 30th parameter value can be 90°, that is, α8>90°, which can prevent the eighth angle from being too small, avoid the third section heat exchanger from tilting too far backward, reduce the placement space of the indoor fan, and reduce the size of the main body in the front-to-back direction, so that the overall size of the main body in the front-to-back direction is smaller, which is convenient for installation in a small space such as a kitchen, and improves the possibility and convenience of installing an air-conditioning indoor unit in a small space, and the air-conditioning indoor unit can be installed in a narrow space such as above a window or door.

[0333] In this application, reference is made to Fig.23 When the indoor heat exchanger includes a third stage heat exchanger, the minimum gap between the indoor fan and the first stage heat exchanger may be the first gap G1.

[0334] In the present application, the eighth parameter value is ≤ the first gap G1. The eighth parameter value can be any value between 6 mm and 10 mm. The eighth parameter value can be 8 mm, that is, G1 ≥ 8 mm, to avoid the first gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0335] In the present application, the first gap G1≤9th parameter value. The ninth parameter value can be any value between 28mm-32mm. The ninth parameter value can be 30mm, that is, G1≤30mm, to avoid the first gap being too large, reduce the occupation of the first section heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the air conditioner indoor unit can be installed in a small space, and reduce costs.

[0336] In this application, reference is made to Fig.23 When the indoor heat exchanger includes a third-stage heat exchanger, the minimum gap between the indoor fan and the second-stage heat exchanger may be the second gap G2.

[0337] In the present application, the tenth parameter value is ≤ the second gap G2. The tenth parameter value is any value between 6 mm and 10 mm. The tenth parameter value can be 8 mm, that is, G2 ≥ 8 mm, to avoid the second gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0338] In the present application, the second gap G2≤the eleventh parameter value. The eleventh parameter value can be any value between 28mm-32mm. The eleventh parameter value can be 30mm, that is, G2≤30mm, to avoid the second gap being too large, reduce the space occupied by the second section heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the air conditioner indoor unit can be installed in a small space, and reduce costs.

[0339] In this application, reference is made to Fig.23 , the minimum gap between the indoor fan and the third stage heat exchanger can be the sixth gap G6.

[0340] In the present application, the thirty-first parameter value is ≤ the sixth gap G6. The thirty-first parameter value is any value between 6 mm and 10 mm. The thirty-first parameter value can be 8 mm, that is, G6 ≥ 8 mm, to avoid the sixth gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0341] In the present application, the sixth gap G6 ≤ the thirty-second parameter value. The thirty-second parameter value may be any value between 28 mm and 32 mm. The thirty-second parameter value may be 30 mm, that is, G6 ≤ 30 mm, so as to avoid the sixth gap G6 being too large, reduce the space occupied by the third section heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the indoor unit of the air conditioner can be installed in a small space, and reduce costs.

[0342] In this application, reference is made to Fig.24 The third section of the heat exchanger is located on the side of the first point of the front volute tongue away from the volute tongue air duct.

[0343] In the present application, in the height direction of the main body, the highest point of the third-stage heat exchanger is higher than the first point of the front volute tongue.

[0344] In the present application, the minimum gap between the first point of the front volute tongue and the third stage heat exchanger is the seventh gap G7.

[0345] In this application, reference is made to Fig.24 , the thirty-third parameter value is ≤ the seventh gap G7. The thirty-third parameter value is any value between 4mm-6mm. The thirty-third parameter value is 5mm, that is, G7≥5mm, so that the seventh gap is not too small, ensuring that the air passing through the top of the third section heat exchanger can flow into the volute tongue air duct through the gap between the first point of the front volute tongue and the third section heat exchanger, ensuring the heat exchange effect at the top of the third section heat exchanger, so that the refrigerant diversion effect in the third section heat exchanger is good.

[0346] In the present application, the second stage heat exchanger is located on the side of the first point of the rear volute tongue away from the volute tongue air duct.

[0347] In the present application, in the height direction of the main body, the highest point of the second-stage heat exchanger is higher than the first point of the rear volute tongue.

[0348] In this application, reference is made to Fig.24 The minimum gap between the first point of the rear volute tongue and the second section heat exchanger is the eighth gap G8.

[0349] In the present application, the thirty-fourth parameter value is ≤ the eighth gap G8. The thirty-fourth parameter value is any value between 4 mm and 6 mm. The thirty-fourth parameter value is 5 mm, that is, G8 ≥ 5 mm, so that the eighth gap is not too small, ensuring that the air passing through the top of the second heat exchanger can flow into the volute tongue air duct through the gap between the first point of the rear volute tongue and the second heat exchanger, ensuring the heat exchange effect at the top of the second heat exchanger, so that the refrigerant diversion effect in the second heat exchanger is good.

[0350] In the present application, the water receiving tray includes a water receiving cavity for receiving water. The top of the water receiving cavity is provided with a water receiving cavity opening.

[0351] In the present application, the bottom end of the first stage heat exchanger is inserted into the water receiving cavity through the water receiving cavity opening.

[0352] In the present application, the bottom end of the second stage heat exchanger is inserted into the water receiving cavity through the water receiving cavity opening.

[0353] In this application, reference is made to Fig.25 The indoor heat exchanger may include at least a first stage heat exchanger 211. The front end of the first stage heat exchanger and the rear end of the first stage heat exchanger may be two ends of the first stage heat exchanger in the width direction.

[0354] In the present application, the width direction of the first-stage heat exchanger can be arranged horizontally.

[0355] In the present application, the front end of the first-stage heat exchanger may be the top end of the first-stage heat exchanger, so that the first-stage heat exchanger is tilted so as to be higher at the front and lower at the back.

[0356] In this application, reference is made to Fig.25 , the first section of heat exchanger is located below the indoor fan.

[0357] In this application, reference is made to Fig.25 The indoor heat exchanger may include at least a second stage heat exchanger 212. The bottom end of the second stage heat exchanger and the top end of the second stage heat exchanger may be two ends of the second stage heat exchanger in the width direction.

[0358] In the present application, the bottom end of the second stage heat exchanger is located at the rear end of the first stage heat exchanger.

[0359] In this application, reference is made to Fig.25 , the indoor heat exchanger may include at least a third stage heat exchanger 213 .

[0360] The bottom end of the third section heat exchanger and the top end of the third section heat exchanger may be two ends in the width direction of the third section heat exchanger.

[0361] In the present application, the bottom end of the third stage heat exchanger is located at the front end of the first stage heat exchanger.

[0362] In this application, reference is made to Fig.26 , the angle between the width direction of the second section heat exchanger and the horizontal plane can be a third angle α3.

[0363] In the present application, the third angle ≥ the fourth parameter value. The fourth parameter value can be any value between 45°-55°. The fourth parameter value can be 45°, that is, α3 ≥ 45°, so that the inclination of the second section heat exchanger is large enough to facilitate the drainage of the condensed water on the second section heat exchanger, improve the drainage effect of the second section heat exchanger, and significantly reduce the attenuation of the performance of the second section heat exchanger by the condensed water. In addition, the condensed water on the second section heat exchanger flows to the bottom of the second section heat exchanger to avoid direct dripping of the second section heat exchanger near the top, so as to reduce the front and rear dimensions of the water receiving tray, reduce the shielding of the water receiving tray to the indoor air inlet, increase the air intake area, and increase the air intake volume.

[0364] In this application, reference is made to Fig.26 , the angle between the width direction of the third section heat exchanger and the horizontal plane can be the seventh angle α7.

[0365] In the present application, the seventh angle ≥ the twenty-ninth parameter value. The twenty-ninth parameter value can be any value between 45°-55°. The twenty-ninth parameter value can be 45°, that is, α7 ≥ 45°, so that the inclination of the third section heat exchanger is large enough to facilitate the drainage of the condensed water on the third section heat exchanger, improve the drainage effect of the third section heat exchanger, and significantly reduce the attenuation of the performance of the third section heat exchanger by the condensed water. In addition, the condensed water on the third section heat exchanger flows to the bottom of the third section heat exchanger and flows to the first section heat exchanger, avoiding direct dripping of the second section heat exchanger near the top, so as to reduce the front and rear dimensions of the water receiving tray, reduce the water receiving tray to block the indoor air inlet, increase the air intake area, and increase the air intake volume.

[0366] In this application, reference is made to Fig.26 The angle between the width direction of the first section heat exchanger and the width direction of the second section heat exchanger may be a fourth angle α4. The fourth angle may be toward the indoor fan.

[0367] In the present application, the fourth angle ≥ the thirty-fifth parameter value. The thirty-fifth parameter value can be any value between 90°-130°. The thirty-fifth parameter value can be 90°, that is, α4≥90°, which can prevent the fourth angle from being too small, and can make full use of the space in the front-to-back direction and the height direction in the main body, so that the front-to-back dimension and the height dimension of the main body are not too large, and a three-stage indoor heat exchanger can be set to increase the heat exchange area of ​​the indoor heat exchanger, improve the heat exchange effect of the indoor heat exchanger, and the height dimension and the front-to-back dimension are not large, so the air conditioner indoor unit can be installed in a narrow space such as above a window or door.

[0368] Setting α3≥45°, α7≥45°, and α4≥90° can facilitate the drainage of the first and third heat exchangers, and can ensure that the heat exchange area of ​​the indoor heat exchanger is sufficient while making full use of the space in the front-to-back direction and the height direction of the main body, thereby minimizing the height and front-to-back dimensions of the main body, and the air conditioner indoor unit can be installed in narrow spaces such as above windows or doors.

[0369] In this application, reference is made to Fig.26 The angle between the width direction of the first section heat exchanger and the width direction of the third section heat exchanger may be an eighth angle α8. The eighth angle α8 is toward the indoor fan.

[0370] In the present application, the eighth angle α8 ≥ the thirty-sixth parameter value. The thirty-sixth parameter value is any value between 90°-130°. The thirty-sixth parameter value can be 90°, that is, α8 ≥ 90°, which can prevent the eighth angle from being too small, avoid the third section heat exchanger from tilting too far backward, reduce the placement space of the indoor fan, and reduce the size of the main body in the front-to-back direction, so that the overall size of the main body in the front-to-back direction is smaller, which is convenient for installation in a small space such as a kitchen, and improves the possibility and convenience of installing an air-conditioning indoor unit in a small space, and the air-conditioning indoor unit can be installed in a narrow space such as above a window or door.

[0371] In this application, reference is made to Fig. 27 When the indoor heat exchanger includes a third-stage heat exchanger, the minimum gap between the indoor fan and the second-stage heat exchanger may be the second gap G2.

[0372] In the present application, the tenth parameter value is ≤ the second gap G2. The tenth parameter value is any value between 6 mm and 10 mm. The tenth parameter value can be 8 mm, that is, G2 ≥ 8 mm, to avoid the second gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0373] In the present application, the second gap G2≤the eleventh parameter value. The eleventh parameter value can be any value between 28mm-32mm. The eleventh parameter value can be 30mm, that is, G2≤30mm, to avoid the second gap being too large, reduce the space occupied by the second section heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the air conditioner indoor unit can be installed in a small space, and reduce costs.

[0374] In this application, reference is made to Fig. 27 , the minimum gap between the indoor fan and the third stage heat exchanger can be the sixth gap G6.

[0375] In the present application, the thirty-first parameter value is ≤ the sixth gap G6. The thirty-first parameter value is any value between 6 mm and 10 mm. The thirty-first parameter value can be 8 mm, that is, G6 ≥ 8 mm, to avoid the sixth gap being too small, to avoid abnormal noise, and to ensure the air volume and heat exchange efficiency.

[0376] In the present application, the sixth gap G6 ≤ the thirty-second parameter value. The thirty-second parameter value may be any value between 28 mm and 32 mm. The thirty-second parameter value may be 30 mm, that is, G6 ≤ 30 mm, so as to avoid the sixth gap G6 being too large, reduce the space occupied by the third section heat exchanger in the main body, avoid increasing the front and rear dimensions and height dimensions of the main body, reduce the overall size of the main body, ensure that the indoor unit of the air conditioner can be installed in a small space, and reduce costs.

[0377] In the present application, the indoor unit of the air conditioner may include a water receiving pan, which is arranged below the indoor heat exchanger to receive condensed water flowing down from the indoor heat exchanger.

[0378] The water receiving pan comprises a water receiving surface for receiving condensed water from the indoor heat exchanger.

[0379] In the present application, in the height direction of the main body, the lowest point of the first-stage heat exchanger is located above the lowest point of the water receiving surface.

[0380] In this application, reference is made to Fig. 27 The distance between the lowest point of the water receiving surface and the lowest point of the first section heat exchanger in the height direction of the main body is a sixth distance L6.

[0381] In the present application, the sixth distance L6 ≥ the thirty-eighth parameter value. The thirty-eighth parameter value is any value between 4 mm and 6 mm. The thirty-eighth parameter value can be 5 mm, that is, L6 ≥ 5 mm, so that there is a distance between the lowest point of the first section heat exchanger and the lowest point of the water receiving surface, so that there is a sufficient gap between the bottom of the first section heat exchanger and the bottom of the water receiving surface, so that air can enter the gap between the water receiving surface and the first section heat exchanger on both sides of the water receiving tray, so that the first section heat exchanger has a better heat exchange effect, and the heat exchange effect of the first section heat exchanger is guaranteed.

[0382] In the present application, in the height direction of the main body, the lowest point of the first-stage heat exchanger is located below the highest point of the water receiving pan.

[0383] In this application, reference is made to Fig. 27 In the height direction of the main body, the distance between the lowest point of the indoor heat exchanger and the highest point of the water receiving pan is a fifth distance L5.

[0384] In the present application, the fifth distance is ≤ the thirty-seventh parameter value. The thirty-seventh parameter value is any value between 8 mm and 12 mm. The thirty-seventh parameter value is 10 mm, that is, L5 ≤ 10 mm, which prevents the first section heat exchanger from being inserted too deeply into the water receiving tray, facilitates air to enter the bottom of the first section heat exchanger and pass through the first section heat exchanger, and can ensure the heat exchange effect of the first section heat exchanger.

[0385] In the present application, the water receiving tray includes a water receiving cavity for receiving water. The top of the water receiving cavity is provided with a water receiving cavity opening. The first stage heat exchanger is arranged in the water receiving cavity.

[0386] In this application, reference is made to Fig.28 The water receiving surface includes a first water receiving surface 2321. The first water receiving surface can be arranged at the bottom of the water receiving surface.

[0387] In the present application, the minimum gap between the first heat exchanger and the first water receiving surface is the sixth distance L6.

[0388] In this application, reference is made to Fig.28 The water receiving tray includes a water receiving tray top surface 235 disposed on the top of the water receiving tray. The minimum distance between the lowest point of the first stage heat exchanger and the water receiving tray top surface in the main body height direction is a fifth distance L5.

[0389] In the present application, at least part of the indoor air inlet is located in front of the water receiving tray and below the third stage heat exchanger.

[0390] In this application, reference is made to Fig.29 The third section of the heat exchanger is located on the side of the first point of the front volute tongue away from the volute tongue air duct.

[0391] In the present application, in the height direction of the main body, the highest point of the third-stage heat exchanger is higher than the first point of the front volute tongue.

[0392] In the present application, the minimum gap between the first point of the front volute tongue and the third stage heat exchanger is the seventh gap G7.

[0393] In the present application, the thirty-third parameter value is ≤ the seventh gap G7. The thirty-third parameter value is any value between 4 mm and 6 mm. The thirty-third parameter value is 5 mm, that is, G7 ≥ 5 mm, so that the seventh gap is not too small, ensuring that the air passing through the top of the third section heat exchanger can flow into the volute tongue air duct through the gap between the first point of the front volute tongue and the third section heat exchanger, ensuring the heat exchange effect at the top of the third section heat exchanger, so that the refrigerant diversion effect in the third section heat exchanger is good.

[0394] In the present application, the second stage heat exchanger is located on the side of the first point of the rear volute tongue away from the volute tongue air duct.

[0395] In this application, reference is made to Fig.29 , in the height direction of the main body, the highest point of the second section heat exchanger is higher than the first point of the rear volute tongue.

[0396] In this application, reference is made to Fig.29 The minimum gap between the first point of the rear volute tongue and the second section heat exchanger is the eighth gap G8.

[0397] In the present application, the thirty-fourth parameter value is ≤ the eighth gap G8. The thirty-fourth parameter value is any value between 4 mm and 6 mm. The thirty-fourth parameter value is 5 mm, that is, G8 ≥ 5 mm, so that the eighth gap is not too small, ensuring that the air passing through the top of the second heat exchanger can flow into the volute tongue air duct through the gap between the first point of the rear volute tongue and the second heat exchanger, ensuring the heat exchange effect at the top of the second heat exchanger, so that the refrigerant diversion effect in the second heat exchanger is good.

[0398] In the present application, the water receiving tray includes a water receiving cavity for receiving water. The top of the water receiving cavity is provided with a water receiving cavity opening.

[0399] In the present application, the bottom end of the first stage heat exchanger is inserted into the water receiving cavity through the water receiving cavity opening.

[0400] In the present application, the bottom end of the second stage heat exchanger is inserted into the water receiving cavity through the water receiving cavity opening.

[0401] In this application, reference is made to Figure 12-Figure 15 When the indoor heat exchanger includes a first-stage heat exchanger, a second-stage heat exchanger, and a third-stage heat exchanger, the air conditioner indoor unit may include an air outlet housing.

[0402] The air outlet shell is connected to the housing. The air outlet shell is located at the indoor air outlet. An air outlet duct is formed in the air outlet shell. The air outlet duct is connected to the first cavity through the indoor air outlet. A first vent is provided at the first end of the air outlet shell away from the indoor air outlet.

[0403] The indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger. The air after heat exchange with the indoor heat exchanger flows into the air outlet duct through the indoor air outlet and flows out of the air outlet duct through the first vent.

[0404] The air outlet shell is arranged, and can guide the air to the space below the suspended ceiling even after the main body is embedded in the suspended ceiling, so that the space inside the suspended ceiling can be fully utilized, and the main body is prevented from occupying the space below the suspended ceiling, which is suitable for the needs of small spaces.

[0405] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0406] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0407] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0408] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioner indoor unit, characterized in that: include: A main body, wherein the length direction of the main body is from one side end to the other side end, and the main body at least includes a first cavity located inside the main body; The subject includes: A casing, wherein an indoor air inlet is provided at the bottom thereof, an indoor air outlet is provided at the front side of the casing, and the indoor air outlet and the indoor air inlet are in communication with the first cavity; an indoor heat exchanger, disposed in the first chamber; an indoor fan, arranged in the first cavity and located on a side of the indoor heat exchanger away from the indoor air inlet, the indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger, and the air after heat exchange with the indoor heat exchanger flows out of the first cavity through the indoor air outlet; The indoor heat exchanger comprises: A first section heat exchanger, wherein the front end and the rear end are two ends of the first section heat exchanger in the width direction, and the first section heat exchanger is located below the indoor fan; The second section heat exchanger, wherein the bottom end and the top end are two ends of the second section heat exchanger in the width direction, and the bottom end of the second section heat exchanger is located at the rear end of the first section heat exchanger; The third section heat exchanger has a bottom end and a top end as two ends in the width direction of the first section heat exchanger, and the bottom end of the third section heat exchanger is located at the front end of the first section heat exchanger; The angle between the width direction of the second section heat exchanger and the horizontal plane is a third angle α3, α3 ≥ 45°; The angle between the width direction of the third section heat exchanger and the horizontal plane is the seventh angle α7, α7≥45°; An angle between the width direction of the first section heat exchanger and the width direction of the second section heat exchanger is a fourth angle α4, and the fourth angle is toward the indoor fan, and α4≥90°.

2. An air conditioner indoor unit, characterized in that: include: A main body, wherein the length direction of the main body is from one side end to the other side end, and the main body at least includes a first cavity located inside the main body; The subject includes: A casing, wherein an indoor air inlet is provided at the bottom thereof, an indoor air outlet is provided at the front side of the casing, and the indoor air outlet and the indoor air inlet are in communication with the first cavity; an indoor heat exchanger, disposed in the first chamber; an indoor fan, disposed in the first cavity and located on a side of the indoor heat exchanger away from the indoor air inlet; The air conditioner indoor unit comprises: an air outlet shell connected to the housing and located at the indoor air outlet, an air outlet duct being formed in the air outlet shell, the air outlet duct being connected to the first cavity through the indoor air outlet, and a first vent being provided at a first end of the air outlet shell away from the indoor air outlet; The indoor fan drives air from the indoor air inlet into the first cavity to exchange heat with the indoor heat exchanger, and the air after heat exchange with the indoor heat exchanger flows into the air outlet duct through the indoor air outlet and flows out of the air outlet duct through the first vent; The indoor heat exchanger comprises: A first section heat exchanger, wherein the front end and the rear end are two ends of the first section heat exchanger in the width direction, and the first section heat exchanger is located below the indoor fan; The second section heat exchanger, wherein the bottom end and the top end are two ends of the second section heat exchanger in the width direction, and the bottom end of the second section heat exchanger is located at the rear end of the first section heat exchanger; The third section heat exchanger has a bottom end and a top end as two ends in the width direction of the first section heat exchanger, and the bottom end of the third section heat exchanger is located at the front end of the first section heat exchanger; The angle between the width direction of the second section heat exchanger and the horizontal plane is a third angle α3, α3 ≥ 45°; The angle between the width direction of the third section heat exchanger and the horizontal plane is the seventh angle α7, α7≥45°; An angle between the width direction of the first section heat exchanger and the width direction of the second section heat exchanger is a fourth angle α4, and the fourth angle is toward the indoor fan, and α4≥90°.

3. The air conditioner indoor unit according to claim 1 or 2, characterized in that: An angle between the width direction of the first section heat exchanger and the width direction of the third section heat exchanger is an eighth angle α8, and the eighth angle α8 is toward the indoor fan, and α8≥90°.

4. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The indoor fan comprises an indoor fan, and the minimum gap between the indoor fan and the second-stage heat exchanger is a second gap G2, G2≥8mm and / or G2≤30mm.

5. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The indoor fan comprises an indoor fan, and the minimum gap between the indoor fan and the third-stage heat exchanger is a sixth gap G6, G6≥8mm and / or G6≤30mm.

6. The air conditioner indoor unit according to claim 1 or 2, characterized in that: include: A water receiving pan is arranged below the indoor heat exchanger to receive condensed water flowing down from the indoor heat exchanger; the water receiving pan comprises a water receiving surface for receiving condensed water from the indoor heat exchanger; In the height direction of the main body, the lowest point of the first section heat exchanger is located above the lowest point of the water receiving surface; The distance between the lowest point of the water receiving surface and the lowest point of the first-stage heat exchanger in the height direction of the main body is a sixth distance L6, 6≥5 mm.

7. The air conditioner indoor unit according to claim 6, characterized in that: In the height direction of the main body, the lowest point of the first stage heat exchanger is located below the highest point of the water receiving pan, and the distance between the lowest point of the indoor heat exchanger and the highest point of the water receiving pan is a fifth distance L5, L5≤10mm.

8. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The housing comprises a front volute tongue and a rear volute tongue, and a volute tongue air duct is formed between the front volute tongue and the rear volute tongue; The front volute tongue comprises a front volute tongue air duct surface that forms a volute tongue air duct; On the flow path of air from the indoor air inlet to the indoor air outlet, the point of the front volute tongue air duct surface closest to the indoor air inlet is the front volute tongue first point D1; The third section heat exchanger is located on the side of the first point of the front volute tongue away from the volute tongue air duct; In the height direction of the main body, the highest point of the third stage heat exchanger is higher than the first point of the front volute tongue, and the minimum gap between the first point of the front volute tongue and the third stage heat exchanger is the seventh gap G7, G7≥5mm.

9. The air conditioner indoor unit according to claim 1 or 2, characterized in that: The housing comprises a front volute tongue and a rear volute tongue, and a volute tongue air duct is formed between the front volute tongue and the rear volute tongue; The rear volute tongue comprises a rear volute tongue air duct surface which encloses the volute tongue air duct; On the flow path of air from the indoor air inlet to the indoor air outlet, the point of the rear volute tongue air duct surface closest to the indoor air inlet is the rear volute tongue first point D2; The second section heat exchanger is located on the side of the first point of the rear volute tongue away from the volute tongue air duct; In the height direction of the main body, the highest point of the second-stage heat exchanger is higher than the first point of the rear volute tongue, and the minimum gap between the first point of the rear volute tongue and the second-stage heat exchanger is the eighth gap G8, G8≥5mm.

10. The air conditioner indoor unit according to claim 6, characterized in that: At least part of the indoor air inlet is located at the front side of the water receiving pan and below the third stage heat exchanger.

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