Indoor unit of air conditioner

Abstract

The utility model provides an indoor unit of an air conditioner, which comprises a main body at least comprising a first cavity; the main body comprises an indoor heat exchanger arranged in the first cavity; the top end of the indoor heat exchanger is located in front of the bottom end of the indoor heat exchanger, the width direction of the indoor heat exchanger is from the bottom end to the top end of the indoor heat exchanger, and the included angle between the width direction of the indoor heat exchanger and the horizontal plane is an eighth included angle alpha 8. A front air inlet and lower air outlet mode is arranged, so that inlet air cannot be blocked during ceiling mounting, the space is saved, the ceiling mounting structure is suitable for small-space mounting, and air outlet is facilitated when the ceiling mounting structure is embedded in a suspended ceiling; the indoor heat exchanger is a section and is convenient to design or install, a certain included angle is formed between the width direction of the indoor heat exchanger and the horizontal plane, so that the indoor heat exchanger is inclined to a certain degree, the space in the front-back direction of the air conditioner indoor unit is utilized to the maximum extent under the condition that the heat exchange requirement is met, the size in the front-back direction is reduced, and the air conditioner indoor unit is convenient to install in a small space. And the device can be conveniently mounted in an area above a door and a window of a room.

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] The indoor unit of the air conditioner includes a casing, an air inlet and an air outlet are arranged on the casing, and an indoor heat exchanger is arranged inside the casing. Conventional wall-mounted indoor units of air conditioners have top air intake and front and bottom air outlet, and a certain height of air intake space is generally required above the top air intake position; however, in small spaces such as kitchens, since there will be a suspended ceiling on the top of the small space and the height space of the small space is insufficient, the indoor unit of the air conditioner is required to be installed close to the ceiling to save space, but the conventional indoor unit of the air conditioner with top air intake will be blocked after being installed close to the ceiling, and air cannot enter.

[0004] At present, there are some air-conditioning indoor units that are provided with an air inlet on the front side of the air conditioner and an air outlet on the lower side of the air conditioner, so that the air is inhaled on the front side and the air is discharged on the lower side. When the air conditioner is installed close to the ceiling, the air inlet will not be blocked. However, the front-to-back dimensions of the existing air-conditioning indoor units with air intake at the front and air outlet at the lower side are large, and it is difficult to install them in an environment with high requirements on depth. In addition, the indoor heat exchanger is provided in two sections, so that when designing the air-conditioning indoor unit, it is necessary to pay attention to the relationship between the indoor heat exchanger and other parts in many places, which increases the design cost. In addition, when assembling the indoor heat exchanger, it is necessary to pay attention to the relationship between the two sections. When assembling the air-conditioning indoor unit, it is necessary to pay attention to the positions of the indoor heat exchanger and other parts in many places, which makes the assembly of the indoor heat exchanger and the assembly of the air-conditioning indoor unit more complicated. Therefore, the present application proposes an air-conditioning 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 of the main body to the other side end of the main body, and the main body at least includes a first cavity located in the main body;

[0008] The subject includes:

[0009] A casing, wherein an indoor air inlet is provided on the front side of the casing, an indoor air outlet is provided on the bottom of the casing, and both the indoor air outlet and the indoor air inlet are connected to the first cavity;

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

[0011] an indoor fan, arranged in the first cavity, the indoor fan being located at a side of the indoor heat exchanger away from the indoor air inlet, the indoor fan driving 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 top end of the indoor heat exchanger is located in front of the bottom end of the indoor heat exchanger, the bottom end of the indoor heat exchanger to the top end of the indoor heat exchanger is the width direction of the indoor heat exchanger, and the angle between the width direction of the indoor heat exchanger and the horizontal plane is the eighth angle α8.

[0013] A front air intake and downward air outlet mode is set, so that when it is installed close to the ceiling, the air intake will not be blocked, which saves space and is suitable for installation in a small space. When it is embedded in the ceiling, it is convenient for air outlet and can be installed in a hidden manner, which can make full use of the space in the ceiling and has a beautiful appearance. The air-conditioning indoor unit can be installed in a limited space without affecting the normal use of the air-conditioning indoor unit; the indoor heat exchanger is set as one section, which is convenient for designing or installing the indoor heat exchanger. There is a certain angle between the width direction of the indoor heat exchanger and the horizontal plane, so that the indoor heat exchanger has a certain slope, which can maximize the use of the space in the front and rear directions of the air-conditioning indoor unit while meeting the heat exchange needs, reduce the size in the front and rear directions, make the air-conditioning indoor unit miniaturized and lightweight, and is convenient for installation in a small space, and is convenient for installation in the area above the door and window of the room, reducing the occupancy of the small space room, increasing the application scope of the air-conditioning indoor unit installation, and solving the problem of difficulty in installing the air-conditioning indoor unit in a small space.

[0014] According to an embodiment of the present disclosure, an air conditioner indoor unit is also provided, comprising:

[0015] A main body, wherein the length direction of the main body is from one side end of the main body to the other side end of the main body, and the main body at least includes a first cavity located in the main body;

[0016] The subject includes:

[0017] A casing, wherein an indoor air inlet is provided on the front side of the casing, an indoor air outlet is provided on the bottom of the casing, and both the indoor air outlet and the indoor air inlet are connected to the first cavity;

[0018] an indoor heat exchanger, disposed in the first chamber;

[0019] An indoor fan is disposed in the first cavity, and the indoor fan is located on a side of the indoor heat exchanger away from the indoor air inlet;

[0020] The air conditioner indoor unit comprises:

[0021] An air inlet shell having an air inlet duct formed therein, the air inlet duct being connected to the first cavity through the indoor air inlet, and a first vent being formed on the air inlet shell, the first vent being connected to the air inlet duct;

[0022] The indoor fan drives air from the first vent into the air inlet duct, the air in the air inlet duct enters the first cavity through the indoor air inlet 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;

[0023] The top end of the indoor heat exchanger is located in front of the bottom end of the indoor heat exchanger, the bottom end of the indoor heat exchanger to the top end of the indoor heat exchanger is the width direction of the indoor heat exchanger, and the angle between the width direction of the indoor heat exchanger and the horizontal plane is the eighth angle α8.

[0024] According to an embodiment of the present disclosure, an air conditioner indoor unit is also provided, comprising:

[0025] A main body, wherein the length direction of the main body is from one side end of the main body to the other side end of the main body, and the main body at least includes a first cavity located in the main body;

[0026] The subject includes:

[0027] A casing, wherein an indoor air inlet is provided on the front side of the casing, and the indoor air inlet is communicated with the first cavity;

[0028] an indoor heat exchanger, disposed in the first chamber;

[0029] An indoor fan is disposed in the first cavity, and the indoor fan is located on a side of the indoor heat exchanger away from the indoor air inlet;

[0030] The air conditioner indoor unit comprises:

[0031] An air outlet device is provided below the main body and located in a second installation opening of the suspended ceiling, the air outlet device is formed with a first air outlet, an air outlet duct is formed in the air outlet device, and the air outlet duct connects the first air outlet and the first cavity;

[0032] 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, and the air in the air outlet duct flows out through the first air outlet;

[0033] The top end of the indoor heat exchanger is located in front of the bottom end of the indoor heat exchanger, the bottom end of the indoor heat exchanger to the top end of the indoor heat exchanger is the width direction of the indoor heat exchanger, and the angle between the width direction of the indoor heat exchanger and the horizontal plane is the eighth angle α8.

[0034] According to an embodiment of the present disclosure, the 40th parameter value ≥ α8 and / or α8 ≥ the 39th parameter value, and the 39th parameter value is any value between 15°-25°, so that the eighth angle will not be too small, which is convenient for drainage of the indoor heat exchanger, reduces the attenuation effect of condensed water on the performance of the indoor heat exchanger, and avoids the front and rear dimensions of the air-conditioning indoor unit being too large. The 40th parameter value is any value between 65°-75°, so that the eighth angle will not be too large, avoids the height of the indoor heat exchanger being too large, and avoids the heat exchange area being too small.

[0035] According to an embodiment of the present disclosure, the indoor fan includes an indoor fan, the minimum gap between the indoor heat exchanger and the indoor fan is the eighth gap G8, the forty-first parameter value ≤ the eighth gap G8 and / or the eighth gap G8 ≤ the forty-second parameter value, the forty-first parameter value is any value between 7mm-9mm, which avoids the eighth gap being too small, avoids abnormal noise and can ensure the air volume and heat exchange efficiency, the forty-second parameter value is any value between 28mm-32mm, which avoids the eighth gap being too large, can reduce the front and rear dimensions of the air-conditioning indoor unit, and reduce the cost of the air-conditioning indoor unit.

[0036] According to an embodiment of the present disclosure, the indoor fan includes an indoor fan, the casing includes a front volute tongue, the minimum gap between the indoor fan and the front volute tongue is the seventh gap G7, the thirty-sixth parameter value ≤ the seventh gap G7 and / or the seventh gap G7 ≤ the thirty-seventh parameter value, the thirty-sixth parameter value is any value between 3.5mm-4.5mm, to avoid the seventh gap being too small and to avoid interference, the thirty-seventh parameter value is any value between 6mm-7mm, to avoid the seventh gap being too large, to avoid noise and reduce air volume loss.

[0037] According to an embodiment of the present disclosure, the front volute tongue comprises:

[0038] A front volute tongue air inlet section, on the flow path of air from the indoor air inlet to the indoor air outlet, the front volute tongue air inlet section is located at an end of the front volute tongue away from the indoor air outlet, and an end of the front volute tongue air inlet section close to the indoor air inlet is the front end of the front volute tongue air inlet section;

[0039] The distance between the rear end of the indoor heat exchanger and the front end of the front volute tongue air inlet section in the front-to-back direction of the main body is the tenth distance L10, the tenth distance L10 ≥ the forty-third parameter value and / or the forty-fourth parameter value ≥ the tenth distance L10, the forty-third parameter value is any value between 4mm-6mm, and the forty-fourth parameter value is any value between 9mm-11mm.

[0040] When the rear end of the indoor heat exchanger is located behind the front end of the front volute tongue air inlet section, the tenth distance L10 is set to be ≥ the forty-third parameter value, so that the rear end of the indoor heat exchanger can be inserted a distance behind the front end of the front volute tongue air inlet section, reducing the amount of air entering the gap between the front volute tongue air inlet section and the indoor heat exchanger, avoiding the generation of eddy currents at the front end of the front volute tongue air inlet section, making the air intake uniform, avoiding the generation of discontinuous noise at the front end of the front volute tongue air inlet section, and avoiding affecting the wind resistance resistance of the indoor heat exchanger;

[0041] When the rear end of the indoor heat exchanger is located behind the front end of the front volute tongue air inlet section, setting the tenth distance L10≥the forty-third parameter value can enable the rear end of the indoor heat exchanger to be inserted a certain distance behind the front end of the front volute tongue air inlet section, thereby reducing the amount of air entering the gap between the front volute tongue air inlet section and the indoor heat exchanger, avoiding the generation of vortices at the front end of the front volute tongue air inlet section, making the air intake uniform, avoiding the generation of discontinuous noise at the front end of the front volute tongue air inlet section, and avoiding affecting the wind resistance resistance of the indoor heat exchanger.

[0042] According to an embodiment of the present disclosure, the indoor fan includes an indoor fan, and the distance between the rear end of the indoor heat exchanger and the rotation center of the indoor fan in the front and rear directions of the main body is a ninth distance L9, the ninth distance L9≤the forty-fifth parameter value, and the forty-fifth parameter value is any value between 18mm-22mm, thereby preventing a large amount of airflow from entering the gap between the indoor fan and the front volute tongue, ensuring the air volume while avoiding noise, and being able to reduce the front and rear dimensions of the air conditioner indoor unit to ensure the possibility of installation in a small space.

[0043] According to an embodiment of the present disclosure, the housing includes a rear volute tongue, and on the flow path of air from the indoor air inlet to the indoor air outlet, an end of the rear volute tongue close to the indoor air inlet is a rear volute tongue air inlet end;

[0044] The housing comprises an upper inflection surface, the bottom end of which is connected to the air inlet end of the rear volute tongue;

[0045] In the height direction of the main body, the top end of the indoor heat exchanger is located above the bottom end of the upper inflection surface; and the indoor heat exchanger is located in front of the upper inflection surface.

[0046] According to an embodiment of the present disclosure, the upper turn surface is arranged along the length direction of the main body, and in the front-to-back direction of the main body, the top end of the upper turn surface is located in front of the bottom end of the upper turn surface, and the angle between the upper turn surface and the height direction of the main body is the ninth angle α9, the forty-sixth parameter value ≤ the ninth angle α9 and / or the ninth angle α9 ≤ the forty-seventh parameter value, the forty-sixth parameter value is any value between 25°-35°, so that the ninth angle is not too small, and the casing does not block the top of the indoor heat exchanger, so that the air passes through the top of the indoor heat exchanger and then flows into the indoor fan, which can enhance the heat exchange efficiency of the indoor heat exchanger, and the forty-seventh parameter value is any value between 55°-65°, so that the ninth angle is not too large, and a wind guide slope can be formed, which can provide a certain guiding ability and facilitate the air to flow to the indoor fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] 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.

[0048] Figure 1 is a three-dimensional diagram of an indoor unit of an air conditioner according to an embodiment of the present application;

[0049] Figure 2 is a three-dimensional diagram of an indoor unit of an air conditioner from another perspective according to an embodiment of the present application;

[0050] Figure 3-Figure 4 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0051] Figure 5 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0052] Figure 6 yes Figure 5 A partial enlarged view of A2 in the middle;

[0053] Figure 7 is an exploded view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0054] Figure 8 is a schematic diagram of the installation environment of the indoor unit of the air conditioner according to the implementation mode of the present application;

[0055] Fig. 9 is another schematic diagram of the installation environment of the indoor unit of the air conditioner according to the embodiment of the present application;

[0056] Fig.10is another schematic diagram of the installation environment of the indoor unit of the air conditioner according to the embodiment of the present application;

[0057] Fig.11 is another schematic diagram of the installation environment of the indoor unit of the air conditioner according to the embodiment of the present application;

[0058] Fig.12 is another schematic diagram of the installation environment of the indoor unit of the air conditioner according to the embodiment of the present application;

[0059] Fig.13 is another schematic diagram of the installation environment of the indoor unit of the air conditioner according to the embodiment of the present application;

[0060] Fig.14 is a three-dimensional diagram of an indoor unit of an air conditioner from another perspective according to an embodiment of the present application;

[0061] Fig.15 is a three-dimensional diagram of an air outlet device according to an embodiment of the present application;

[0062] Fig.16 is a three-dimensional diagram of an indoor unit of an air conditioner from another perspective according to an embodiment of the present application;

[0063] Fig.17 is a three-dimensional diagram of an air outlet device according to an embodiment of the present application;

[0064] Fig.18 is a partial structural stereogram of an air conditioner indoor unit from another perspective according to an embodiment of the present application;

[0065] Figure 19-Figure 27 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0066] Fig.28 is a partial structural cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0067] Figure 29-Figure 31 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present application;

[0068] Figure 32-Figure 33 It is a partial structural sectional view of an air conditioner indoor unit according to an embodiment of the present application.

[0069] In the above figures:

[0070] Main body 100; first chamber 101; housing 1; indoor air inlet 111; indoor air outlet 112; front panel 124; first through hole 1241 of front panel; air inlet grille 125; front volute tongue 126; front volute tongue air inlet section 1261; front volute tongue air outlet section 1262; front volute tongue connecting section 1263; rear volute tongue 127; rear volute tongue air inlet end 1271; upper inflection surface 128; bottom frame 131; indoor heat exchanger 21; first section heat exchanger 211; second section heat exchanger 212; third section heat exchanger 213; heat exchanger front Wind surface 214; first fold line segment 215; second fold line segment 216; indoor fan 22; indoor fan 221; outer air guide plate 31; inner air guide plate 32; ceiling air inlet grille 33; grille air outlet 331; air inlet shell 34; air inlet duct 341; first vent 342; air outlet device 35; first air outlet 351; air outlet panel 352; air outlet duct 353; air outlet connecting panel 354; first hanging portion 355 of air outlet panel; ceiling 903; first ceiling mounting opening 9031; second ceiling mounting opening 9032. DETAILED DESCRIPTION

[0071] 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.

[0072] The present application proposes an air-conditioning indoor unit, which is described below with reference to the accompanying drawings.

[0073] The air conditioner indoor unit may be a component of the air conditioner. The air conditioner may include an air conditioner outdoor unit.

[0074] 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.

[0075] 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.

[0076] In this application, reference is made to Figure 1-Figure 3 The air conditioner indoor unit may include a main body 100 .

[0077] The body 100 may have a top and a bottom. The top of the body to the bottom of the body may be the height direction of the body.

[0078] 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.

[0079] 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.

[0080] The height direction, length direction and front-rear direction of the main body are perpendicular to each other.

[0081] 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.

[0082] 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.

[0083] In this application, reference is made to Figure 1-Figure 3 , the main body 100 may include a housing 1 .

[0084] In this application, reference is made to Figure 1-Figure 3 An indoor air inlet 111 may be formed on the housing 1.

[0085] The indoor air inlet 111 may be disposed at the front side 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.

[0086] 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 bottom 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.

[0087] In the present application, the indoor unit of the air conditioner can be mounted on a wall. The top of the indoor unit of the air conditioner can be mounted against a wall or against an indoor ceiling surface, so that the indoor unit of the air conditioner is mounted against the ceiling. When the indoor unit of the air conditioner is mounted against the ceiling, air can enter the first cavity of the casing through the indoor air inlet on the front side of the casing, and the air flows out of the casing from the indoor air outlet.

[0088] In the present application, the indoor air outlet 112 may be disposed on the front side of the bottom of the housing.

[0089] In the present application, the indoor air outlet 112 may be disposed in the middle of the bottom of the casing.

[0090] In the present application, the distance between the front end of the indoor air outlet and the front end of the bottom of the casing is greater than the distance between the rear end of the indoor air outlet and the rear end of the bottom of the casing.

[0091] In the present application, the indoor air outlet is in the shape of a long strip and is arranged along the length direction of the main body.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] The air conditioner outdoor unit may include an outdoor heat exchanger. The outdoor heat exchanger may be arranged in the outdoor accommodation space.

[0097] The air conditioner outdoor unit may include an outdoor fan. The outdoor fan may be arranged in the outdoor accommodation space.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] In the present application, the air conditioner may include a compressor. The compressor may be arranged in the outdoor accommodation space.

[0102] 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.

[0103] Of both the indoor heat exchanger and the outdoor heat exchanger, one is a condenser and the other is an evaporator.

[0104] The air conditioner performs the 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.

[0105] 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.

[0106] The exhausted refrigerant gas flows into the condenser.

[0107] The condenser condenses the compressed refrigerant into liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0108] The throttle device expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] In this application, the indoor wall space is very limited in small space scenarios such as kitchens, bathrooms, small bedrooms, storage rooms, convenience stores, etc. For example, the kitchen wall is surrounded by range hoods, cabinets, windows, doors connecting to the living room, refrigerators, etc., and 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.

[0113] Conventional wall-mounted air conditioner indoor units have top air intake and front and bottom air outlet, and a certain height of air intake space is generally required above the top air intake position; however, in small space scenarios such as kitchens, since there will be a suspended ceiling on the top of the small space and the height space of the small space is insufficient, the air conditioner indoor unit is required to be installed close to the ceiling to save space. However, after the conventional top-intake air conditioner indoor unit is installed close to the ceiling, the air inlet of the air conditioner indoor unit will be blocked and no air will enter.

[0114] In the prior art, there are some air-conditioning indoor units that have an air inlet on the front side of the air-conditioner and an air outlet on the bottom side of the air-conditioner, so that the air is inletted at the front side and outletd at the bottom side of the air-conditioner, and the air inlet is not blocked when the air-conditioner is installed close to the ceiling. However, the heat exchanger of the existing air-conditioning indoor unit with air intake at the front and air outlet at the bottom is in the form of two sections. When the overall height of the air-conditioning indoor unit is limited, the heat exchange area is small, which affects the cooling effect. Under the premise that there is a large demand for cooling capacity in the kitchen, etc., the cooling effect of the existing air-conditioning indoor unit is difficult to meet the needs of users, thereby reducing the market competitiveness of the air-conditioning indoor unit.

[0115] In this application, reference is made to Figure 1-Figure 3The indoor heat exchanger 21 may include at least a first stage heat exchanger 211. The first stage heat exchanger 211 may be located at the bottom end of the indoor heat exchanger.

[0116] In the present application, the first stage heat exchanger may be disposed between the indoor air inlet and the indoor fan.

[0117] 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.

[0118] In the present application, the two ends of the first section heat exchanger that are relatively arranged in the width direction can be arranged up and down.

[0119] In the present application, the top end of the first heat exchanger may be located in front of the bottom end of the first heat exchanger. The bottom end of the first heat exchanger to the top end of the first heat exchanger may be the width direction of the first heat exchanger.

[0120] In this application, reference is made to Figure 3 , the angle between the width direction of the first section heat exchanger and the horizontal plane can be a fifth angle α5.

[0121] α5≥the twenty-seventh parameter value. The twenty-seventh parameter value may be any value between 35° and 45°. The twenty-seventh parameter value may be 35°, 40°, or 45°. The front-to-rear dimensions of the air-conditioning indoor unit can be greatly reduced, which is beneficial to reducing costs and making the overall size of the air-conditioning indoor unit more flexible. At the same time, the drainage effect at the first heat exchanger can be improved, which can significantly reduce the attenuation effect of condensed water on the performance of the first heat exchanger.

[0122] In this application, reference is made to Figure 3 The indoor heat exchanger may include at least a second stage heat exchanger 212. The second stage heat exchanger 212 may be located above the first stage heat exchanger.

[0123] 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.

[0124] In the present application, the two ends of the second section heat exchanger in the width direction may be arranged up and down.

[0125] In this application, reference is made to Figure 3 , the distance from the bottom end of the second heat exchanger to the top end of the second heat exchanger can be the width direction of the second heat exchanger. The angle between the width direction of the second heat exchanger and the horizontal plane can be the sixth angle α6.

[0126] The twenty-ninth parameter value is ≥α6. The twenty-eighth parameter value can be any value between 65° and 75°. The twenty-eighth parameter value can be 65°, 70° or 75°.

[0127] α6≥the twenty-eighth parameter value. The twenty-ninth parameter value may be any value between 105° and 115°. The twenty-ninth parameter value may be 105°, 110°, or 115°.

[0128] Setting the twenty-ninth parameter value ≥ α6 ≥ the twenty-eighth parameter value can significantly reduce the front and rear length of the air-conditioning indoor unit, which is beneficial to reducing costs and making the overall size of the air-conditioning indoor unit more flexible. At the same time, it can improve the drainage effect at the second-stage heat exchanger and significantly reduce the attenuation effect of condensed water on the performance of the second-stage heat exchanger.

[0129] In the present application, the bottom end of the second stage heat exchanger may be connected to the top end of the first stage heat exchanger.

[0130] In this application, reference is made to Figure 3 The indoor heat exchanger may include at least a third heat exchanger 213. The third heat exchanger may be disposed at the top of the indoor heat exchanger. The third heat exchanger may be located above the second heat exchanger.

[0131] In the present application, the third section heat exchanger may be arranged along the length direction of the main body. The length direction of the third section heat exchanger may be parallel to the length direction of the main body.

[0132] In the present application, the two ends of the third section heat exchanger in the width direction may be arranged up and down.

[0133] In this application, reference is made to Figure 3 , the top of the third section heat exchanger can be located behind the bottom of the third section heat exchanger. The bottom of the third section heat exchanger to the top of the third section heat exchanger can be the width direction of the third section heat exchanger. The angle between the width direction of the third section heat exchanger and the horizontal plane can be the seventh angle α7.

[0134] The thirty-first parameter value is ≥α7. The thirty-first parameter value can be any value between 65° and 75°. The thirty-first parameter value can be 65°, 70° or 75°. Avoid increasing the height of the indoor unit of the air conditioner.

[0135] α7≥30th parameter value. The 30th parameter value may be any value between 35°-45°. The 30th parameter value may be 35°, 40°, or 45°. The front-to-rear dimensions of the air-conditioning indoor unit can be greatly reduced, which is beneficial to reducing costs and making the overall size of the air-conditioning indoor unit more flexible. At the same time, the drainage effect at the third heat exchanger can be improved, which can significantly reduce the attenuation effect of condensed water on the performance of the third heat exchanger.

[0136] In the present application, the bottom end of the third stage heat exchanger may be connected to the top end of the second stage heat exchanger.

[0137] In the present application, a front air intake and downward air outlet method is set up, so that when it is installed close to the ceiling, the air intake will not be blocked, space is saved, and it is suitable for installation in a small space. When it is embedded in the ceiling, it is convenient for air outlet and can be installed in a hidden manner. It can make full use of the space in the ceiling and has a beautiful appearance. The air-conditioning indoor unit can be installed in a limited space without affecting the normal use of the air-conditioning indoor unit.

[0138] In the present application, the indoor heat exchanger is provided with at least three sections, and the three sections of the indoor heat exchanger are arranged upward in sequence, so as to increase the heat exchange area of ​​the indoor heat exchanger within the limited height dimension of the air-conditioning indoor unit, improve the cooling effect, and reduce the front-to-back dimensions of the air-conditioning indoor unit, so that the height dimension and the front-to-back dimensions of the air-conditioning indoor unit are both small, which is convenient for installation in a small space, and convenient for installation in the area above the door and window of the room, thereby reducing the occupancy of the small space room, increasing the application scope of the air-conditioning indoor unit installation, and solving the problem of difficulty in installing the air-conditioning indoor unit in a small space.

[0139] By setting the angle range between the width direction of the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger and the horizontal plane, a larger heat exchange area can be obtained within the limited height and front-to-back dimensions of the air-conditioning indoor unit. Within the set angle range, the front-to-back dimensions of the air-conditioning indoor unit are greatly reduced while the height of the air-conditioning indoor unit remains unchanged, which is beneficial to reducing costs and making the overall size of the air-conditioning indoor unit more flexible. At the same time, the drainage effect at the three-stage heat exchanger can be improved, which can significantly reduce the attenuation effect of condensed water on the performance of the three-stage heat exchanger.

[0140] In the present application, at least one heat exchanger may be connected between the first heat exchanger and the second heat exchanger. At least one heat exchanger between the first heat exchanger and the second heat exchanger may be located above the first heat exchanger. At least one heat exchanger between the first heat exchanger and the second heat exchanger may be located below the second heat exchanger.

[0141] In the present application, at least one heat exchanger may be connected between the third heat exchanger and the second heat exchanger. At least one heat exchanger between the third heat exchanger and the second heat exchanger may be located above the second heat exchanger. At least one heat exchanger between the third heat exchanger and the second heat exchanger may be located below the third heat exchanger.

[0142] In the present application, the indoor fan may be a cross-flow fan.

[0143] In this application, reference is made to Figure 4 The indoor fan may include an indoor fan 221. The indoor fan may be a cross-flow fan. 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.

[0144] 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.

[0145] In the present application, the farther the distance between the indoor fan and the indoor heat exchanger is, the more conducive it is to increasing the air volume. However, if the distance between the indoor fan and the indoor heat exchanger is too far, the space occupied inside the casing will increase, the front and rear dimensions of the air-conditioning indoor unit will increase, the cost of the air-conditioning indoor unit will increase, and the installation space will increase. However, when the distance between the indoor fan and the indoor heat exchanger is close, abnormal noise will be generated.

[0146] In this application, reference is made to Figure 4 , the minimum gap between the first stage heat exchanger and the indoor fan can be the fifth gap G5.

[0147] The 32nd parameter value is less than or equal to the fifth gap G5. The 32nd parameter value can be any value between 7 mm and 9 mm. The 32nd parameter value can be 7 mm, 8 mm or 9 mm. Avoid the fifth gap being too small to avoid abnormal noise and ensure the air volume and heat exchange efficiency.

[0148] The fifth gap G5≤the thirty-third parameter value. The thirty-third parameter value may be any value between 28 mm and 32 mm. The thirty-third parameter value may be 28 mm, 30 mm, or 32 mm. Avoiding the fifth gap from being too large can reduce the front-to-rear dimensions of the air conditioner indoor unit and reduce the cost of the air conditioner indoor unit.

[0149] In this application, reference is made to Figure 4 , the minimum gap between the third section heat exchanger and the indoor fan can be the sixth gap G6.

[0150] The thirty-fourth parameter value is less than or equal to the sixth gap G6. The thirty-fourth parameter value can be any value between 7 mm and 9 mm. The thirty-fourth parameter value can be 7 mm, 8 mm or 9 mm. Avoid the sixth gap being too small to avoid abnormal noise while ensuring the air volume and heat exchange efficiency.

[0151] The sixth gap G6 is less than or equal to the thirty-fifth parameter value. The thirty-fifth parameter value may be any value between 28 mm and 32 mm. The thirty-fifth parameter value may be 28 mm, 30 mm, or 32 mm. Avoiding the sixth gap from being too large can reduce the front-to-rear dimensions of the air conditioner indoor unit and reduce the cost of the air conditioner indoor unit.

[0152] In this application, reference is made to Figure 4 The housing may include a front volute tongue 126. The housing may include a rear volute tongue 127. The indoor fan may be located between the front volute tongue and the rear volute tongue.

[0153] In the present application, the front volute tongue and the rear volute tongue may be an integral piece.

[0154] In the present application, the air inlet and outlet method of front air flow and bottom air flow causes the air to make a large turn in the process of flowing into the casing and out of the casing. The air flow enters from the front side of the casing, which makes it easy for the air flow to enter the gap between the indoor fan and the front volute tongue, affecting the air volume of the air conditioner indoor unit and easily generating noise.

[0155] In this application, reference is made to Figure 4 The minimum gap between the indoor fan and the front volute tongue can be the seventh gap G7.

[0156] The thirty-sixth parameter value is less than or equal to the seventh gap G7. The thirty-sixth parameter value can be any value between 3.5 mm and 4.5 mm. The thirty-sixth parameter value can be 3.5 mm, 4 mm or 4.5 mm. Avoid the seventh gap being too small. Avoid interference.

[0157] The seventh gap G7 ≤ the thirty-seventh parameter value. The thirty-seventh parameter value can be any value between 6 mm and 7 mm. The thirty-seventh parameter value can be 6 mm, 6.5 mm, or 7 mm. Avoid the seventh gap being too large. It can avoid noise and reduce air volume loss.

[0158] In the present application, the front volute tongue 126 may be located below the indoor fan.

[0159] In the present application, the top end of the front volute tongue 126 may be located above the lowest point of the indoor fan.

[0160] In this application, reference is made to Figure 5 The front volute tongue may include a front volute tongue air inlet section 1261. 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, and the front volute tongue air inlet section is located at one end of the front volute tongue away from the indoor air outlet.

[0161] In the present application, the end of the front volute tongue air inlet section close to the indoor air inlet is the front end of the front volute tongue air inlet section.

[0162] In the present application, the end of the front volute tongue air inlet section close to the indoor air outlet is the rear end of the front volute tongue air inlet section.

[0163] In this application, reference is made to Figure 5 The front volute tongue may include a front volute tongue outlet section 1262. On the flow path of air from the indoor air inlet to the indoor air outlet, the front volute tongue outlet section is located at one end of the front volute tongue close to the indoor air outlet, and the front volute tongue outlet section is located at one end of the front volute tongue away from the indoor air inlet.

[0164] In the present application, the end of the front volute tongue air outlet section close to the indoor air outlet is the bottom end of the front volute tongue air outlet section.

[0165] In the present application, the end of the front volute tongue air outlet section close to the indoor air inlet is the top end of the front volute tongue air outlet section.

[0166] In the present application, the end of the front volute tongue air outlet section close to the indoor air inlet and outlet is the front end of the front volute tongue air outlet section.

[0167] In the present application, the end of the front volute tongue air outlet section close to the room air inlet and outlet is the rear end of the front volute tongue air outlet section.

[0168] In this application, reference is made to Figure 5 The front volute tongue may include a front volute tongue connecting section 1263. The front volute tongue connecting section is connected between the front volute tongue air inlet section and the front volute tongue air outlet section.

[0169] The front volute tongue connecting section 1263 is connected to the rear end of the front volute tongue air inlet section. The front volute tongue connecting section is connected to the top end of the front volute tongue air outlet section.

[0170] In the present application, the top end of the first-stage heat exchanger may be higher than the front volute tongue.

[0171] In this application, reference is made to Figure 5 The distance between the rear end of the first heat exchanger and the front end of the front volute tongue air inlet section in the front-to-rear direction of the main body may be a seventh distance L7.

[0172] In the present application, in the front-to-back direction of the main body, the rear end of the first heat exchanger is located behind the front end of the front volute air inlet section, which can reduce the front-to-back dimensions of the air conditioner indoor unit and ensure the possibility of installation in a small space.

[0173] In the present application, the rear end of the first heat exchanger can be located in front of the front volute tongue air outlet section.

[0174] In the present application, the seventh distance L7 ≥ the twenty-second parameter value. The twenty-second parameter value may be any value between 4 mm and 6 mm. The twenty-second parameter value may be 4 mm, 5 mm or 6 mm.

[0175] When the rear end of the first heat exchanger is located behind the front end of the front volute tongue air inlet section, setting the seventh distance L7≥the twenty-second parameter value can enable the rear end of the first heat exchanger to be inserted a distance behind the front end of the front volute tongue air inlet section, thereby reducing the amount of air entering the gap between the front volute tongue air inlet section and the first heat exchanger, avoiding the generation of eddy currents at the front end of the front volute tongue air inlet section, making the air intake uniform, avoiding the generation of discontinuous noise at the front end of the front volute tongue air inlet section, and avoiding affecting the wind resistance resistance of the first heat exchanger.

[0176] In the present application, the thirty-eighth parameter value is greater than or equal to the seventh distance L7. The thirty-eighth parameter value may be any value between 9 mm and 11 mm. The thirty-eighth parameter value may be 9 mm, 10 mm, or 11 mm.

[0177] When the rear end of the first heat exchanger is located behind the front end of the front volute tongue air inlet section, the thirty-eighth parameter value is set ≥ the seventh distance L7 to avoid the rear end of the first heat exchanger from being inserted too far behind the front end of the front volute tongue air inlet section, to avoid excessive wind resistance at the lower end of the first heat exchanger, to avoid causing a small amount of air flow at the lower end of the first heat exchanger, to avoid affecting the heat exchange performance of the lower end of the first heat exchanger, and to ensure the heat exchange efficiency of the lower end of the first heat exchanger.

[0178] When the rear end of the first heat exchanger is located in front of the front end of the front volute tongue air inlet section, setting the thirty-eighth parameter value ≥ the seventh distance L7 can reduce the front and rear dimensions of the air conditioner indoor unit and ensure the possibility of small space installation.

[0179] In this application, reference is made to Figure 5 , the distance between the rear end of the first heat exchanger and the rotation center of the indoor fan in the front-to-back direction of the main body can be a sixth distance L6. The sixth distance L6≤the sixteenth parameter value. The sixteenth parameter value can be any value between 18mm-22mm. The sixteenth parameter value can be 18mm, 20mm or 22mm. Prevent a large amount of airflow from entering the gap between the indoor fan and the front volute tongue, ensure the air volume while avoiding noise, and can reduce the front-to-back dimensions of the air conditioner indoor unit, ensuring the possibility of installation in a small space.

[0180] In the present application, in the front-to-back direction of the main body, the rear end of the first heat exchanger is located behind the rotation center of the indoor fan, which can reduce the front-to-back dimensions of the air conditioner indoor unit and ensure the possibility of installation in a small space.

[0181] In the present application, in the front-rear direction of the main body, the rear end of the first-stage heat exchanger is located in front of the rotation center of the indoor fan.

[0182] In the present application, in the front-to-rear direction of the main body, the rear end of the third-stage heat exchanger is located in front of the indoor fan to prevent condensed water flowing down the third-stage heat exchanger from dripping onto the indoor fan and causing water blowing.

[0183] In the present application, on the flow path of air from the indoor air inlet to the indoor air outlet, the end of the rear volute tongue close to the indoor air inlet can be the rear volute tongue air inlet end 1271.

[0184] In this application, reference is made to Figure 6 The casing may include an upper inflection surface 128. The bottom end of the upper inflection surface may be connected to the air inlet end of the rear volute tongue.

[0185] In the front-to-rear direction of the main body, the top end of the upper inflection surface may be located in front of the bottom end of the upper inflection surface.

[0186] The top end of the third section heat exchanger is located in front of the upper inflection surface. The top end of the third section heat exchanger can contact the upper inflection surface.

[0187] In this application, reference Figure 6 , the upper inflection surface can be arranged along the length direction of the main body. The angle between the upper inflection surface and the height direction of the main body is the fourth angle α4. The fourth angle α4<the twenty-sixth parameter value. The twenty-sixth parameter value can be any value between 45°-55°. The twenty-sixth parameter value can be 45°, 50° or 55°. It is convenient to set the third section heat exchanger to avoid air leakage between the upper inflection surface and the third section heat exchanger.

[0188] In this application, reference is made to Figure 7 , the housing may include a front panel 124. The front panel 124 may be disposed on the front side of the housing.

[0189] In the present application, the indoor air inlet may be formed on the front panel.

[0190] In this application, reference is made to Figure 7 A first through hole 1241 of the front panel may be formed on the front panel.

[0191] In this application, reference is made to Figure 7 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 through hole 1241 of the front panel.

[0192] 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.

[0193] 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.

[0194] In the present application, the first filter can be installed on the front panel.

[0195] In the present application, the first filter can be installed on the air inlet grille.

[0196] 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.

[0197] In the present application, the oil fume removal filter can be arranged on the inner side of the indoor air inlet.

[0198] In this application, the oil fume removal filter can be connected to the front panel.

[0199] In the present application, the oil fume removal filter can be connected to the air inlet grille.

[0200] In the present application, the oil fume removal filter can be connected to the first filter.

[0201] In this application, reference is made to Figure 1-Figure 3The 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.

[0202] 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.

[0203] In this application, reference is made to Figure 1-Figure 3 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.

[0204] 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.

[0205] 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 a wall, the air conditioner indoor unit can be installed close to the ceiling or have a certain gap with the ceiling, a first filter and / or a fume filter can be arranged on the inner side of 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.

[0206] In the present application, the air conditioner indoor unit may be an embedded air conditioner indoor unit. The air conditioner indoor unit may be embedded in the ceiling.

[0207] In this application, reference is made to Figure 8-Figure 10 A first ceiling installation opening 9031 may be provided on the suspended ceiling.

[0208] 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.

[0209] In this application, reference is made to Figure 8-Figure 10 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.

[0210] 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.

[0211] 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.

[0212] 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, and the first filter may not be arranged on the indoor air inlet.

[0213] 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.

[0214] 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.

[0215] In this application, reference is made to Figure 8-Figure 10 The air conditioner indoor unit may include an air inlet housing 34. An air inlet duct 341 is formed in the air inlet housing 34.

[0216] The air inlet duct can be connected to the first cavity through the indoor air inlet.

[0217] In this application, reference is made to Figure 8-Figure 11 The first installation opening of the suspended ceiling and the main body can be located in two different rooms, so that the air of one room can be sucked into the other room. The wind entering the indoor unit of the air conditioner can be avoided from coming from the kitchen, and the oil pollution entering the indoor unit of the air conditioner can be reduced.

[0218] refer to Figure 8-Figure 10 The air inlet shell may be formed with a first vent 342. The first vent may be communicated with the air inlet duct.

[0219] In the present application, when there is a ventilation shell, the indoor fan drives the air from the first vent into the air inlet duct, the air in the air duct enters the first cavity through the indoor air inlet and exchanges 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.

[0220] In the present application, the ventilation shell is arranged above the suspended ceiling. One end of the ventilation shell provided with the first ventilation opening is connected to the suspended ceiling air inlet grille.

[0221] One end of the ventilation shell away from the first ventilation port is connected to the casing.

[0222] In this application, reference is made to Figure 8-Figure 11 A second ceiling installation opening 9032 may be provided on the suspended ceiling.

[0223] In this application, reference is made to Fig.12 Fig.15 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 ceiling.

[0224] The top end of the air outlet device is connected to the housing. A first air outlet 351 is formed at the bottom end of the air outlet device.

[0225] In the present application, the first air outlet is flush with the bottom surface of the suspended ceiling.

[0226] In the present application, the first air outlet is located below the bottom surface of the suspended ceiling.

[0227] 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.

[0228] In the present application, the inner air guide plate is arranged on the inner side of the first air outlet.

[0229] In this application, reference is made to Fig.12 Fig.15 The air outlet device may include an air outlet panel 352 disposed at the top thereof. The first air outlet may be formed on the air outlet panel.

[0230] The air outlet panel can be located below the suspended ceiling.

[0231] In this application, reference is made to Fig.12 Fig.15 The air outlet device may have an air outlet duct 353 formed therein. The air outlet duct may be connected to the first cavity. The air outlet duct is connected to the first air outlet.

[0232] Driven by the indoor fan, the heat-exchanged air passes through the air outlet duct and is discharged from the first air outlet.

[0233] In the present application, the inner air guide plate may be located in the air outlet duct.

[0234] In this application, reference is made to Fig.12 Fig.15 The air outlet device may include an air outlet connection panel 354. The air outlet connection panel is arranged at the bottom end of the housing. The air outlet connection panel is connected to the housing.

[0235] In the present application, the air outlet device can be snap-connected to the casing via an air outlet connection panel.

[0236] In the present application, in the vertical direction, the top end of the air outlet duct is higher than the air outlet connection panel.

[0237] In this application, reference is made to Figure 16-18 The air outlet device may include a first hanging portion 355 of the air outlet panel.

[0238] The casing may be provided with a bottom enclosure 131 located at the bottom of the casing. The top of the air outlet device may be inserted into the bottom enclosure, and the air outlet device is hung on the ceiling or fixed on the ceiling through the first hanging portion of the panel.

[0239] In this application, reference is made to Fig.19 The indoor heat exchanger may have at least one section. When the indoor heat exchanger has multiple sections, the width directions of the multiple sections of the indoor heat exchangers may be collinear.

[0240] In the present application, the top of the indoor heat exchanger may be located in front of the bottom of the indoor heat exchanger. The bottom of the indoor heat exchanger to the top of the indoor heat exchanger may be the width direction of the indoor heat exchanger. The angle between the width direction of the indoor heat exchanger and the horizontal plane is the eighth angle α8.

[0241] In the present application, the indoor heat exchanger is set as a section to facilitate the design or installation of the indoor heat exchanger. The width direction of the indoor heat exchanger has a certain angle with the horizontal plane, so that the indoor heat exchanger has a certain slope. The space in the front and rear directions of the air-conditioning indoor unit can be maximized while meeting the heat exchange needs, and the dimensions in the front and rear directions can be reduced, so that the air-conditioning indoor unit is miniaturized and lightweight, which is convenient for installation in a small space and convenient for installation in the area above the door and window of the room, thereby reducing the occupancy of the small space room, increasing the application scope of the air-conditioning indoor unit installation, and solving the problem of difficulty in installing the air-conditioning indoor unit in a small space.

[0242] In the present application, the 40th parameter value is ≥ α8. The 40th parameter value can be any value between 65° and 75°. The 40th parameter value can be 65°, 70° or 75°. This ensures that the eighth angle is not too large, so as to avoid making the height of the indoor heat exchanger too large and the heat exchange area too small.

[0243] In the present application, α8≥39th parameter value. The 39th parameter value may be any value between 15°-25°. The 39th parameter value may be 15°, 20°, or 25°. This ensures that the eighth angle is not too small, facilitates drainage of the indoor heat exchanger, reduces the attenuation effect of condensed water on the performance of the indoor heat exchanger, and avoids making the front and rear dimensions of the air conditioner indoor unit too large.

[0244] In the present application, the 40th parameter value ≥ α8 ≥ the 39th parameter value is set so that the size of the air-conditioning indoor unit is appropriate and the heat exchange area is sufficient to facilitate drainage.

[0245] In this application, reference is made to Fig.19 , the minimum gap between the indoor heat exchanger and the indoor fan can be the eighth gap G8.

[0246] In the present application, the 41st parameter value is ≤ the 8th gap G8. The 41st parameter value can be any value between 7mm and 9mm. The 41st parameter value can be 7mm, 8mm or 9mm. Avoid the 8th gap being too small, avoid abnormal noise and ensure the air volume and heat exchange efficiency.

[0247] In the present application, the eighth gap G8≤the forty-second parameter value. The forty-second parameter value may be any value between 28 mm and 32 mm. The forty-second parameter value may be 28 mm, 30 mm, or 32 mm. Avoiding the eighth gap from being too large can reduce the front-to-back dimensions of the air conditioner indoor unit and reduce the cost of the air conditioner indoor unit.

[0248] In this application, reference is made to Fig.19 The minimum gap between the indoor fan and the front volute tongue can be the seventh gap G7.

[0249] The thirty-sixth parameter value is less than or equal to the seventh gap G7. The thirty-sixth parameter value can be any value between 3.5 mm and 4.5 mm. The thirty-sixth parameter value can be 3.5 mm, 4 mm or 4.5 mm. Avoid making the seventh gap too small to avoid interference.

[0250] The seventh gap G7 ≤ the thirty-seventh parameter value. The thirty-seventh parameter value can be any value between 6 mm and 7 mm. The thirty-seventh parameter value can be 6 mm, 6.5 mm, or 7 mm. Avoid the seventh gap being too large. It can avoid noise and reduce air volume loss.

[0251] In this application, reference is made to Fig. 20 The distance between the rear end of the indoor heat exchanger and the front end of the front volute tongue air inlet section in the front-to-rear direction of the main body is the tenth distance L10.

[0252] In the present application, in the front-to-back direction of the main body, the rear end of the indoor heat exchanger is located behind the front end of the front volute air inlet section, which can reduce the front-to-back dimensions of the air conditioner indoor unit and ensure the possibility of installation in a small space.

[0253] In the present application, the rear end of the indoor heat exchanger may be located in front of the front volute tongue air outlet section.

[0254] In the present application, the tenth distance L10 ≥ the forty-third parameter value. The forty-third parameter value may be any value between 4 mm and 6 mm. The forty-third parameter value may be 4 mm, 5 mm or 6 mm.

[0255] When the rear end of the indoor heat exchanger is located behind the front end of the front volute tongue air inlet section, setting the tenth distance L10≥the forty-third parameter value can enable the rear end of the indoor heat exchanger to be inserted a certain distance behind the front end of the front volute tongue air inlet section, thereby reducing the amount of air entering the gap between the front volute tongue air inlet section and the indoor heat exchanger, avoiding the generation of vortices at the front end of the front volute tongue air inlet section, making the air intake uniform, avoiding the generation of discontinuous noise at the front end of the front volute tongue air inlet section, and avoiding affecting the wind resistance resistance of the indoor heat exchanger.

[0256] In the present application, the 44th parameter value is ≥ the 10th distance L10. The 44th parameter value may be any value between 9 mm and 11 mm. The 44th parameter value may be 9 mm, 10 mm or 11 mm.

[0257] When the rear end of the indoor heat exchanger is located behind the front end of the front volute tongue air inlet section, the forty-fourth parameter value is set ≥ the tenth distance L10 to avoid the rear end of the indoor heat exchanger from being inserted too far behind the front end of the front volute tongue air inlet section, to avoid causing excessive wind resistance at the lower end of the indoor heat exchanger, to avoid causing a small amount of air flow at the lower end of the indoor heat exchanger, to avoid affecting the heat exchange performance of the lower end of the indoor heat exchanger, and to ensure the heat exchange efficiency of the lower end of the indoor heat exchanger.

[0258] When the rear end of the indoor heat exchanger is located in front of the front end of the front volute tongue air inlet section, setting the forty-fourth parameter value ≥ the tenth distance L10 can reduce the front and rear dimensions of the air conditioner indoor unit and ensure the possibility of small space installation.

[0259] In this application, reference is made to Fig. 20 , the distance between the rear end of the indoor heat exchanger and the rotation center of the indoor fan in the front-to-rear direction of the main body may be a ninth distance L9.

[0260] The ninth distance L9 is less than or equal to the forty-fifth parameter value. The forty-fifth parameter value may be any value between 18 mm and 22 mm. The forty-fifth parameter value may be 18 mm, 20 mm, or 22 mm. A large amount of airflow is prevented from entering the gap between the indoor fan and the front volute tongue, thereby ensuring air volume while avoiding noise, and being able to reduce the front and rear dimensions of the indoor unit of the air conditioner, thereby ensuring the possibility of installation in a small space.

[0261] In this application, reference is made to Fig. 20 The casing may include an upper inflection surface 128. The bottom end of the upper inflection surface may be connected to the air inlet end of the rear volute tongue.

[0262] In the height direction of the main body, the top end of the indoor heat exchanger may be located above the bottom end of the upper inflection surface. The indoor heat exchanger may be located in front of the upper inflection surface.

[0263] In this application, reference is made to Fig. 20 The upper inflection surface is arranged along the length direction of the main body. In the front-to-back direction of the main body, the top end of the upper inflection surface can be located in front of the bottom end of the upper inflection surface. The angle between the upper inflection surface and the front-to-back direction of the main body is the ninth angle α9.

[0264] In the present application, the 46th parameter value is ≤ the 9th angle α9. The 46th parameter value can be any value between 25°-35°. The 46th parameter value can be 25°, 30°, or 35°. The 9th angle is not too small, and the casing does not block the top of the indoor heat exchanger, which facilitates air to pass through the top of the indoor heat exchanger and then flow into the indoor fan, thereby enhancing the heat exchange efficiency of the indoor heat exchanger.

[0265] In the present application, the ninth angle α9≤the forty-seventh parameter value. The forty-seventh parameter value may be any value between 55°-65°. The forty-seventh parameter value may be 55°, 60°, or 65°. This makes the ninth angle not too large, and can form an air guide slope, which can provide a certain guiding ability and facilitate air flow to the indoor fan.

[0266] In the present application, the width direction of the indoor heat exchanger can be from the bottom end to the top end of the indoor heat exchanger. Along the width direction of the indoor heat exchanger, the indoor heat exchanger is a section of the heat exchanger, and the indoor heat exchanger can be arc-shaped or folded line-shaped.

[0267] In the present application, the indoor heat exchanger is set as a section to facilitate the design or installation of the indoor heat exchanger. The indoor heat exchanger is arc-shaped or broken line-shaped, which can make the most of the space in the front and rear directions of the air-conditioning indoor unit while meeting the heat exchange needs, reduce the dimensions in the front and rear directions, make the air-conditioning indoor unit miniaturized and lightweight, and facilitate installation in a small space. It is also convenient to install in the area above the door and window of the room, reduce the occupancy of the small space room, increase the application scope of the air-conditioning indoor unit installation, and solve the problem of difficulty in installing the air-conditioning indoor unit in a small space.

[0268] In this application, reference is made to Fig.21 , the indoor heat exchanger may have a heat exchanger windward surface 214 .

[0269] In the present application, when the indoor heat exchanger is arc-shaped, the windward surface of the heat exchanger may be arc-shaped along the width direction of the indoor heat exchanger. The windward surface of the heat exchanger is convex toward the side away from the indoor fan.

[0270] refer to Fig.21 The windward surface of the heat exchanger has a windward surface contour line extending along the width direction of the indoor heat exchanger. The angle between the tangent line at the bottom end of the windward surface contour line of the heat exchanger and the horizontal plane can be the tenth angle α10.

[0271] In the present application, the fiftieth parameter value ≤ the tenth angle α10. The fiftieth parameter value may be any value between 25°-35°. The fiftieth parameter value may be 25°, 30°, or 35°. The tenth angle is not too small, so that the indoor heat exchanger can flow down condensed water conveniently, and the condensed water can be prevented from attenuating the performance of the indoor heat exchanger. When the height of the air-conditioning indoor unit remains unchanged, the front and rear dimensions of the air-conditioning indoor unit can be greatly reduced, and a certain heat exchange area can be guaranteed, which is conducive to reducing costs and making the air-conditioning indoor unit miniaturized and lightweight.

[0272] In this application, reference is made to Fig.21 , the angle between the tangent line at the top of the contour line of the windward surface of the heat exchanger and the horizontal plane is the eleventh angle α11.

[0273] In the present application, the fifty-first parameter value is less than or equal to the eleventh angle α11. The fifty-first parameter value may be any value between 105° and 115°. The fifty-first parameter value may be 65°, 70°, or 75°. The eleventh angle is not too small, so that the indoor heat exchanger can flow down condensed water conveniently, and the condensed water can be prevented from attenuating the performance of the indoor heat exchanger. When the height of the air-conditioning indoor unit remains unchanged, the front and rear dimensions of the air-conditioning indoor unit can be greatly reduced, and a certain heat exchange area can be guaranteed, which is conducive to reducing costs and making the air-conditioning indoor unit miniaturized and lightweight.

[0274] In the present application, the eleventh angle α11≤the fifty-second parameter value. The fifty-second parameter value may be any value between 105°-115°. The fifty-second parameter value may be 105°, 110°, or 115°. The eleventh angle is not too small, so that the indoor heat exchanger can flow down condensed water conveniently, and the condensed water can be prevented from attenuating the performance of the indoor heat exchanger. When the height of the air-conditioning indoor unit remains unchanged, the front and rear dimensions of the air-conditioning indoor unit can be greatly reduced, and a certain heat exchange area can be guaranteed, which is conducive to reducing costs and making the air-conditioning indoor unit miniaturized and lightweight.

[0275] In this application, reference is made to Fig. 22 When the indoor heat exchanger is in a zigzag shape, the indoor heat exchanger may include a first zigzag segment 215 located at the bottom end of the indoor heat exchanger.

[0276] refer to Fig. 22 , the top end of the first fold line segment may be located in front of the bottom end of the first fold line segment. The angle between the width direction of the first fold line segment and the horizontal plane may be a twelfth angle α12.

[0277] The fifty-third parameter value is less than or equal to the twelfth angle α12. The fifty-third parameter value may be any value between 25° and 35°. The fifty-third parameter value may be 25°, 30°, or 35°. The twelfth angle is not too small, so that the indoor heat exchanger can flow down condensed water conveniently, and the condensed water can be prevented from attenuating the performance of the indoor heat exchanger. When the height of the air-conditioning indoor unit remains unchanged, the front and rear dimensions of the air-conditioning indoor unit can be greatly reduced, and a certain heat exchange area can be guaranteed, which is conducive to reducing costs and making the air-conditioning indoor unit miniaturized and lightweight.

[0278] In this application, reference is made to Fig. 22 When the indoor heat exchanger is in a zigzag shape, the indoor heat exchanger may include a second zigzag segment 216 located at the top end of the indoor heat exchanger.

[0279] refer to Fig. 22 , the angle between the width direction of the second fold line segment and the horizontal plane can be the thirteenth angle α13.

[0280] In the present application, the fifty-fourth parameter value is less than or equal to the thirteenth angle α13. The fifty-fourth parameter value may be any value between 65° and 75°. The fifty-fourth parameter value may be 65°, 70°, or 75°. The thirteenth angle is not too small, so that the indoor heat exchanger can flow down condensed water conveniently, and the condensed water can be prevented from attenuating the performance of the indoor heat exchanger. When the height of the air-conditioning indoor unit remains unchanged, the front and rear dimensions of the air-conditioning indoor unit can be greatly reduced, and a certain heat exchange area can be guaranteed, which is conducive to reducing costs and making the air-conditioning indoor unit miniaturized and lightweight.

[0281] In the present application, the thirteenth angle α13≤the fifty-fifth parameter value. The fifty-fifth parameter value is any value between 105°-115°. The fifty-fifth parameter value is 105° or 110° or 115°. The thirteenth angle is not too small, which can facilitate the indoor heat exchanger to flow down condensed water, and avoid the condensed water from attenuating the performance of the indoor heat exchanger. When the height size of the air-conditioning indoor unit remains unchanged, the front and rear dimensions of the air-conditioning indoor unit can be greatly reduced, and a certain heat exchange area is guaranteed, which is conducive to reducing costs and making the air-conditioning indoor unit miniaturized and lightweight.

[0282] In this application, reference is made to Fig. 22 When the indoor heat exchanger is in an arc shape or a broken line shape, the minimum gap between the indoor heat exchanger and the indoor fan is the ninth gap G9.

[0283] In the present application, the 48th parameter value is ≤ the ninth gap G9. The 48th parameter value can be any value between 7 mm and 9 mm. The 48th parameter value can be 7 mm, 8 mm or 9 mm. Avoid the 48th parameter value being too small to avoid abnormal noise and ensure the air volume and heat exchange efficiency.

[0284] In the present application, the ninth gap G9≤the forty-ninth parameter value. The forty-ninth parameter value may be any value between 28 mm and 32 mm. The forty-ninth parameter value may be 28 mm, 30 mm, or 32 mm. Avoiding the forty-eighth parameter value from being too large can reduce the front-to-rear dimensions of the air conditioner indoor unit and reduce the cost of the air conditioner indoor unit.

[0285] In this application, reference is made to Fig. 22 When the indoor heat exchanger is in an arc shape or a broken line shape, the minimum gap between the indoor fan and the front volute tongue is the seventh gap G7.

[0286] The thirty-sixth parameter value is less than or equal to the seventh gap G7. The thirty-sixth parameter value can be any value between 3.5 mm and 4.5 mm. The thirty-sixth parameter value can be 3.5 mm, 4 mm or 4.5 mm. Avoid making the seventh gap too small to avoid interference.

[0287] The seventh gap G7≤the thirty-seventh parameter value. The thirty-seventh parameter value may be any value between 6 mm and 7 mm. The thirty-seventh parameter value may be 6 mm, 6.5 mm or 7 mm. Avoiding the seventh gap from being too large can avoid noise and reduce air volume loss.

[0288] In this application, reference is made to Fig.23 When the indoor heat exchanger is arc-shaped or zigzag-shaped, the top of the indoor heat exchanger is located in front of the bottom of the indoor heat exchanger. The distance between the rear end of the indoor heat exchanger and the front end of the front volute tongue air inlet section in the front-to-back direction of the main body is the tenth distance L10.

[0289] In the present application, in the front-to-back direction of the main body, the rear end of the indoor heat exchanger is located behind the front end of the front volute air inlet section, which can reduce the front-to-back dimensions of the air conditioner indoor unit and ensure the possibility of installation in a small space.

[0290] In the present application, the rear end of the indoor heat exchanger may be located in front of the front volute tongue air outlet section.

[0291] In the present application, the tenth distance L10 ≥ the forty-third parameter value. The forty-third parameter value may be any value between 4 mm and 6 mm. The forty-third parameter value may be 4 mm, 5 mm or 6 mm.

[0292] When the rear end of the indoor heat exchanger is located behind the front end of the front volute tongue air inlet section, setting the tenth distance L10≥the forty-third parameter value can enable the rear end of the indoor heat exchanger to be inserted a certain distance behind the front end of the front volute tongue air inlet section, thereby reducing the amount of air entering the gap between the front volute tongue air inlet section and the indoor heat exchanger, avoiding the generation of vortices at the front end of the front volute tongue air inlet section, making the air intake uniform, avoiding the generation of discontinuous noise at the front end of the front volute tongue air inlet section, and avoiding affecting the wind resistance resistance of the indoor heat exchanger.

[0293] In the present application, the 44th parameter value is ≥ the 10th distance L10. The 44th parameter value may be any value between 9 mm and 11 mm. The 44th parameter value may be 9 mm, 10 mm or 11 mm.

[0294] When the rear end of the indoor heat exchanger is located behind the front end of the front volute tongue air inlet section, the forty-fourth parameter value is set ≥ the tenth distance L10 to avoid the rear end of the indoor heat exchanger from being inserted too far behind the front end of the front volute tongue air inlet section, to avoid causing excessive wind resistance at the lower end of the indoor heat exchanger, to avoid causing a small amount of air flow at the lower end of the indoor heat exchanger, to avoid affecting the heat exchange performance of the lower end of the indoor heat exchanger, and to ensure the heat exchange efficiency of the lower end of the indoor heat exchanger.

[0295] When the rear end of the indoor heat exchanger is located in front of the front end of the front volute tongue air inlet section, setting the forty-fourth parameter value ≥ the tenth distance L10 can reduce the front and rear dimensions of the air conditioner indoor unit and ensure the possibility of small space installation.

[0296] In this application, reference is made to Fig.23 When the indoor heat exchanger is arc-shaped or zigzag-shaped, the top of the indoor heat exchanger is located in front of the bottom of the indoor heat exchanger. The distance between the rear end of the indoor heat exchanger and the rotation center of the indoor fan in the front-to-rear direction of the main body is a ninth distance L9.

[0297] The ninth distance L9 is less than or equal to the forty-fifth parameter value. The forty-fifth parameter value may be any value between 18 mm and 22 mm. The forty-fifth parameter value may be 18 mm, 20 mm, or 22 mm. A large amount of airflow is prevented from entering the gap between the indoor fan and the front volute tongue, thereby ensuring air volume while avoiding noise, and being able to reduce the front and rear dimensions of the indoor unit of the air conditioner, thereby ensuring the possibility of installation in a small space.

[0298] In the present application, when the indoor heat exchanger is arc-shaped or zigzag-shaped, the top end of the indoor heat exchanger is located in front of the indoor fan in the front-to-back direction of the main body.

[0299] In the present application, the internal configuration of the air-conditioning indoor unit is not very reasonable, resulting in a relatively large overall height dimension and an overall front-to-back dimension of the air-conditioning indoor unit, which is not conducive to the installation of the air-conditioning indoor unit in a space with a narrow height or in a space with requirements on the front-to-back dimension, affecting the applicability of the air-conditioning indoor unit and reducing the market competitiveness of the air-conditioning indoor unit; and, when the indoor air inlet is set at the front side of the air-conditioning indoor unit, the heat exchange effect of the indoor heat exchanger in the upper section of the existing air-conditioning indoor unit is poor, and the heat exchange mainly depends on the indoor heat exchanger in the lower section, resulting in uneven overall heat exchange of the indoor heat exchanger.

[0300] In this application, reference is made to Fig.24 The bottom of the housing is provided with an indoor air outlet. The distance between the front end of the indoor air outlet and the front end of the housing bottom is greater than the distance between the rear end of the indoor air outlet and the rear end of the housing bottom.

[0301] The indoor air outlet may be located in the middle of the bottom of the casing.

[0302] In this application, reference is made to Figure 24-28 The indoor heat exchanger may include two-stage heat exchangers, which may be a first-stage heat exchanger 211 and a second-stage heat exchanger 212 .

[0303] The indoor heat exchanger adopts a two-stage form, which can greatly save the height dimension of the air-conditioning indoor unit and the space required for indoor installation, and has a wider installation range.

[0304] One end of the first section heat exchanger in the width direction may be the bottom end of the first section heat exchanger. Both ends of the first section heat exchanger in the width direction may be the bottom ends of the first section heat exchanger.

[0305] One end of the second section heat exchanger in the width direction may be the bottom end of the second section heat exchanger, and the other end of the second section heat exchanger in the width direction may be the top end of the second section heat exchanger.

[0306] In the present application, the first section heat exchanger can be tilted in the front-to-back direction of the main body. The top end of the first section heat exchanger can be the front end of the first section heat exchanger. The bottom end of the first section heat exchanger can be the rear end of the first section heat exchanger.

[0307] In the length direction of the main body, the first section heat exchanger can be arranged horizontally.

[0308] In the present application, the second section heat exchanger can be tilted in the front-to-back direction of the main body. The bottom end of the second section heat exchanger can be the front end of the second section heat exchanger. The top end of the second section heat exchanger can be the rear end of the second section heat exchanger.

[0309] In the length direction of the main body, the second section heat exchanger can be arranged horizontally.

[0310] In this application, reference is made to Fig.24 , the bottom end of the second section heat exchanger is connected to the top end of the second section heat exchanger.

[0311] The openings of the first section heat exchanger and the second section heat exchanger may face the indoor fan. The width direction of the first section heat exchanger and the width direction of the second section heat exchanger may be arranged at a first angle α1. The first angle α1 may face the indoor fan.

[0312] The first angle α1<the tenth parameter value. The tenth parameter value can be any value between 82°-90°. The tenth parameter value can be 90°, 86° or 82°. To ensure that the indoor heat exchanger has a certain heat exchange area, the width direction of the first section of the heat exchanger and the width direction of the second section of the heat exchanger are set at an acute angle, so that the overall height of the indoor heat exchanger will not be too high, which can greatly reduce the overall height of the air conditioner indoor unit, meet the installation needs of small spaces such as kitchens, and the air conditioner indoor unit can be installed in a small space above a door or window.

[0313] The first angle α1 may be 80°.

[0314] In this application, reference is made to Fig.24 , the first angle α1> the eleventh parameter value. The eleventh parameter value can be any value between 30°-50°. The eleventh parameter value can be 30°, 40° or 50°, so that the first section heat exchanger and the second section heat exchanger have a certain angle, ensuring the opening space formed by the first section heat exchanger and the second section heat exchanger, so that the air can smoothly pass through the indoor heat exchanger and flow from the front side of the indoor heat exchanger to the opening space formed by the first section heat exchanger and the second section heat exchanger, ensuring the air output of the air conditioner indoor unit.

[0315] In this application, reference is made to Fig.24 The width direction of the second section heat exchanger and the horizontal plane may be arranged at a second angle α2. The second angle α2 may be toward the indoor fan.

[0316] The second angle α2> the twelfth parameter value. The twelfth parameter value can be any value between 35°-45°. The twelfth parameter value can be 45°, 40° or 35°. This makes the width direction of the second section heat exchanger have a certain inclination angle, so that the condensed water generated on the second section heat exchanger can flow down smoothly.

[0317] The second angle α2 may be 46° or 47°.

[0318] In this application, reference is made to Fig.24 The second angle α2 is less than the first angle α1, so that the width direction of the first section heat exchanger forms a certain angle with the horizontal plane, avoiding the horizontal setting of the first section heat exchanger and ensuring the heat exchange effect of the first section heat exchanger.

[0319] In this application, reference is made to Fig.25 The indoor fan may include an indoor fan. When the indoor fan rotates, the maximum diameter of the contour formed by the rotation of the points on the indoor fan is the maximum diameter D1 of the fan.

[0320] refer to Fig.25 The rear end of the first heat exchanger may be located behind the rear end of the second heat exchanger. The distance between the rear end of the first heat exchanger and the rear end of the second heat exchanger in the front-rear direction of the main body may be a fifth distance L5.

[0321] L5 / D1≤the fourteenth parameter value. The fourteenth parameter value may be any value between 1.5 and 2.5. The fourteenth parameter value may be 1.5, 2 or 2.5, so that the front and rear dimensions of the indoor unit of the air conditioner can be reduced as much as possible without affecting the air volume and noise, so as to facilitate installation in a small space.

[0322] L5 / D1≥13th parameter value. The 13th parameter value can be any value between 1 / 4-1 / 2. The 13th parameter value can be 1 / 4 or 1 / 3 or 1 / 2, so as not to affect the air volume and noise, and to prevent excessive wind from entering between the fan and the front volute tongue.

[0323] In the present application, in the front-to-back direction of the main body, the rear end of the first heat exchanger is located behind the rotation center of the indoor fan, which can reduce the front-to-back dimensions of the air conditioner indoor unit and ensure the possibility of installation in a small space.

[0324] In the present application, the rear end of the second heat exchanger is at a certain distance from the rotation center of the indoor fan in the front-to-back direction of the main body. In the front-to-back direction of the main body, the rear end of the second heat exchanger can be located in front of the rotation center of the indoor fan.

[0325] In this application, reference is made to Fig.24 When the second angle α2 is less than 45°, in the front-to-rear direction of the main body, the rear end of the second heat exchanger is located in front of the indoor fan, preventing condensed water on the second heat exchanger from dripping onto the fan, preventing condensed water from being thrown to the outside of the air conditioner indoor unit by the fan, and preventing condensed water from being thrown out from the indoor air outlet.

[0326] In the present application, the width direction of the first section heat exchanger and the horizontal plane may be arranged at a third angle α3. The third angle α3 may be toward the indoor fan.

[0327] When the third angle α3 is larger, it is beneficial for the first stage heat exchanger to discharge condensed water, and can reduce the attenuation effect of condensed water on the performance of the first stage heat exchanger.

[0328] When the third angle α3 is small, the overall height of the air-conditioning indoor unit can be reduced while ensuring the heat exchange area, thereby ensuring the possibility of installing the air-conditioning indoor unit in a small space.

[0329] In this application, reference is made to Fig.24 , the third angle α3>the fifteenth parameter value. The fifteenth parameter value can be any value between 0°-10°. The fifteenth parameter value can be 0°, 5° or 10°, which is beneficial to the first stage heat exchanger to discharge condensed water, and can reduce the attenuation effect of condensed water on the performance of the first stage heat exchanger, but will not greatly increase the height of the air conditioner indoor unit.

[0330] The third angle α3 may be 23° or 24°.

[0331] In the present application, the top end of the first section heat exchanger may be the front end of the first section heat exchanger, and the bottom end of the second section heat exchanger may be the front end of the second section heat exchanger.

[0332] In the present application, the bottom end of the second heat exchanger is connected to the top end of the second heat exchanger. The openings of the first heat exchanger and the second heat exchanger may face the indoor fan.

[0333] In this application, reference is made to Fig. 27 When the indoor heat exchanger includes a first stage heat exchanger and a second stage heat exchanger, the minimum gap between the indoor fan and the front volute tongue may be the seventh gap G7.

[0334] The thirty-sixth parameter value is less than or equal to the seventh gap G7. The thirty-sixth parameter value can be any value between 3.5 mm and 4.5 mm. The thirty-sixth parameter value can be 3.5 mm, 4 mm or 4.5 mm. Avoid making the seventh gap too small to avoid interference.

[0335] The seventh gap G7≤the thirty-seventh parameter value. The thirty-seventh parameter value may be any value between 6 mm and 7 mm. The thirty-seventh parameter value may be 6 mm, 6.5 mm or 7 mm. Avoiding the seventh gap from being too large can avoid noise and reduce air volume loss.

[0336] The farther the distance between the indoor heat exchanger and the indoor fan, the greater the air volume, but it will cause a larger front-to-back dimension; if the distance between the indoor heat exchanger and the indoor fan is too small, it will cause abnormal noise and affect the air volume.

[0337] In this application, reference is made to Fig. 27 , the minimum gap between the indoor fan and the first section heat exchanger can be the second gap G2. The second gap G2≤ parameter value 19. Parameter value 19 can be any value between 28mm-32mm. Parameter value 19 can be 28mm, 30mm or 32mm. Avoid the second gap being too large, ensure the air volume and noise-free, and limit the minimum gap between the first section heat exchanger and the indoor fan within a certain range, so that the front and rear dimensions and height dimensions of the air conditioner indoor unit will not be too large, ensuring the possibility of installing the air conditioner indoor unit in a small space, and the air conditioner indoor unit can be installed above the door or window indoors.

[0338] In this application, reference is made to Fig. 27 , the eighteenth parameter value ≤ the second gap G2. The eighteenth parameter value can be any value between 6mm-8mm. The eighteenth parameter value can be 6mm, 7mm or 8mm. Avoid the second gap being too small, avoid the indoor fan and the first section heat exchanger being too close to affect the air volume and the heat exchange performance of the indoor heat exchanger, and avoid the indoor fan and the first section heat exchanger being too close to cause noise.

[0339] In this application, reference is made to Fig. 22 , the minimum gap between the indoor fan and the second heat exchanger can be the third gap G3. The third gap G3≤parameter value twenty-one. The parameter value twenty-first can be any value between 28mm-32mm. The parameter value twenty-first can be 28mm or 30mm or 32mm. Avoid the third gap being too large, ensure the air volume and noise-free, and limit the minimum gap between the second heat exchanger and the indoor fan within a certain range, so that the front and rear dimensions and height dimensions of the air conditioner indoor unit will not be too large, ensuring the possibility of installing the air conditioner indoor unit in a small space, and the air conditioner indoor unit can be installed above the door or window indoors.

[0340] In this application, reference is made to Fig. 27, the 20th parameter value ≤ the third gap G3. The 20th parameter value can be any value between 6mm-8mm. The 20th parameter value can be 6mm, 7mm or 8mm. Avoid the third gap being too small, avoid the indoor fan and the first section heat exchanger being too close to affect the air volume and the heat exchange performance of the indoor heat exchanger, and avoid the indoor fan and the first section heat exchanger being too close to cause noise.

[0341] In this application, reference is made to Figure 24-28 , the housing may include a front volute tongue 126. The front volute tongue 126 may be located below the indoor fan.

[0342] refer to Fig.28 The front volute tongue may include a front volute tongue air inlet section 1261. On the flow path of air from the indoor air inlet to the indoor air outlet, the front volute tongue air inlet section is located at the end of the front volute tongue away from the indoor air outlet, and the end of the front volute tongue air inlet section close to the indoor air inlet is the front end of the front volute tongue air inlet section.

[0343] In this application, reference is made to Fig.28 The front volute tongue may include a front volute tongue air outlet section 1262. 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, and the end of the front volute tongue air outlet section close to the indoor air inlet is the top of the front volute tongue air outlet section.

[0344] In this application, reference is made to Fig.28 The front volute tongue may include a front volute tongue connecting section 1263. The front volute tongue connecting section 1263 is connected to the rear end of the front volute tongue air inlet section. The front volute tongue connecting section is connected to the top end of the front volute tongue air outlet section.

[0345] In this application, reference is made to Fig.28 The distance between the rear end of the first heat exchanger and the front end of the front volute tongue air inlet section in the front-to-rear direction of the main body may be a seventh distance L7.

[0346] In the present application, in the front-to-back direction of the main body, the rear end of the first heat exchanger is located behind the front end of the front volute air inlet section, which can reduce the front-to-back dimensions of the air conditioner indoor unit and ensure the possibility of installation in a small space.

[0347] In the present application, the rear end of the first heat exchanger is located in front of the front volute tongue air outlet section.

[0348] In the present application, the seventh distance L7 ≥ the twenty-second parameter value. The twenty-second parameter value may be any value between 4 mm and 6 mm. The twenty-second parameter value may be 4 mm, 5 mm or 6 mm.

[0349] When the rear end of the first heat exchanger is located behind the front end of the front volute tongue air inlet section, setting the seventh distance L7≥the twenty-second parameter value can enable the rear end of the first heat exchanger to be inserted a distance behind the front end of the front volute tongue air inlet section, thereby reducing the amount of air entering the gap between the front volute tongue air inlet section and the first heat exchanger, avoiding the generation of eddy currents at the front end of the front volute tongue air inlet section, making the air intake uniform, avoiding the generation of discontinuous noise at the front end of the front volute tongue air inlet section, and avoiding affecting the wind resistance resistance of the first heat exchanger.

[0350] In the present application, the thirty-eighth parameter value is greater than or equal to the seventh distance L7. The thirty-eighth parameter value may be any value between 9 mm and 11 mm. The thirty-eighth parameter value may be 9 mm, 10 mm, or 11 mm.

[0351] When the rear end of the first heat exchanger is located behind the front end of the front volute tongue air inlet section, the thirty-eighth parameter value is set ≥ the seventh distance L7 to avoid the rear end of the first heat exchanger from being inserted too far behind the front end of the front volute tongue air inlet section, to avoid excessive wind resistance at the lower end of the first heat exchanger, to avoid causing a small amount of air flow at the lower end of the first heat exchanger, to avoid affecting the heat exchange performance of the lower end of the first heat exchanger, and to ensure the heat exchange efficiency of the lower end of the first heat exchanger.

[0352] When the rear end of the first heat exchanger is located in front of the front end of the front volute tongue air inlet section, setting the thirty-eighth parameter value ≥ the seventh distance L7 can reduce the front and rear dimensions of the air conditioner indoor unit and ensure the possibility of small space installation.

[0353] In this application, reference is made to Fig.26 , the distance between the rear end of the first heat exchanger and the rotation center of the indoor fan in the front-to-back direction of the main body can be a sixth distance L6. The sixth distance L6≤the sixteenth parameter value. The sixteenth parameter value can be any value between 18mm-22mm. The sixteenth parameter value can be 18mm, 20mm or 22mm. Prevent a large amount of airflow from entering the gap between the indoor fan and the front volute tongue, ensure the air volume while avoiding noise, and can reduce the front-to-back dimensions of the air conditioner indoor unit, ensuring the possibility of installation in a small space.

[0354] In the present application, the width direction of the second section heat exchanger and the horizontal plane may be set at a second angle α2. The second angle α2 ≥ the fifty-sixth parameter value. The fifty-sixth parameter value may be any value between 15° and 25°. The fifty-sixth parameter value may be 15°, 20°, or 25°. Avoiding an angle that is too small is not conducive to drainage and affects the performance of the second section heat exchanger, and avoiding an angle that is too small makes the front and rear dimensions of the air conditioner indoor unit too large.

[0355] The fifty-seventh parameter value is greater than or equal to the second angle α2. The fifty-seventh parameter value may be any value between 55° and 65°. The fifty-seventh parameter value may be 55°, 60°, or 65°. Avoid excessively large angles that may cause the height of the air conditioner indoor unit to be too large.

[0356] In the present application, the width direction of the first section heat exchanger may be arranged at a third angle α3 with the horizontal plane.

[0357] The third angle α3 is greater than or equal to the fifty-eighth parameter value. The fifty-eighth parameter value may be any value between 15° and 25°. The fifty-eighth parameter value may be 15°, 20°, or 25. Avoiding an angle that is too small is not conducive to drainage and affects the performance of the first stage heat exchanger, and avoiding an angle that is too small makes the front and rear dimensions of the air conditioner indoor unit too large.

[0358] The fifty-ninth parameter value is greater than or equal to the third angle α3. The fifty-ninth parameter value may be any value between 55° and 65°. The fifty-ninth parameter value may be 55°, 60°, or 65°. Avoid excessively large angles that may cause the height of the air conditioner indoor unit to be too large.

[0359] In the present application, in the front-rear direction of the main body, the top end of the second-stage indoor heat exchanger is located in front of the indoor fan.

[0360] In this application, reference is made to Figure 29-Figure 33 The indoor heat exchanger includes a first-stage heat exchanger 211 and a second-stage heat exchanger 212 .

[0361] The bottom end of the second heat exchanger is connected to the top end of the first heat exchanger.

[0362] The openings of the first section heat exchanger and the second section heat exchanger face the indoor fan.

[0363] In this application, reference is made to Fig.29 The width direction of the first section heat exchanger and the width direction of the second section heat exchanger are arranged at a first angle α1. The first angle α1 is toward the indoor fan.

[0364] The first angle α1 is ≥ the twenty-third parameter value. The twenty-third parameter value is any value between 90° and 100°. The twenty-third parameter value is 90°, 95°, or 100°. While ensuring the heat exchange area of ​​the indoor heat exchanger, the front and rear dimensions of the air conditioner indoor unit are reduced to meet the installation needs of small spaces such as kitchens. The air conditioner indoor unit can be installed in a small space above a door or window.

[0365] refer to Fig.29 The width direction of the second section heat exchanger is set at a second angle α2 with the horizontal plane.

[0366] The sixty-first parameter value is greater than or equal to the second angle α2. The sixty-first parameter value is any value between 105° and 115°. The sixty-first parameter value is 105°, 110°, or 115°. The second heat exchanger has a certain inclination, ensuring that the condensed water on the second heat exchanger flows smoothly, and reducing the attenuation of the condensed water on the second heat exchanger.

[0367] The second angle α2 is ≥ the sixtieth parameter value. The sixtieth parameter value is any value between 65° and 75°. The sixtieth parameter value is 65°, 70° or 75°. The second section heat exchanger has a certain inclination, ensuring the smooth flow of condensed water on the second section heat exchanger, and reducing the attenuation of the condensed water on the second section heat exchanger.

[0368] refer to Fig.29 The top end of the first heat exchanger is located in front of the bottom end of the first heat exchanger. The width direction of the first heat exchanger is arranged at a third angle α3 with the horizontal plane.

[0369] The third angle α3 is ≥ the sixty-second parameter value, and the sixty-second parameter value is any value between 35° and 45°. The fifty-eighth parameter value is 35°, 40°, or 45°. The first section heat exchanger has a certain inclination, ensuring that the condensed water on the first section heat exchanger flows down smoothly, and reducing the attenuation of the condensed water on the first section heat exchanger.

[0370] In this application, reference is made to Fig.30 When the indoor heat exchanger includes a first stage heat exchanger and a second stage heat exchanger, the minimum gap between the indoor fan and the front volute tongue may be the seventh gap G7.

[0371] The thirty-sixth parameter value is less than or equal to the seventh gap G7. The thirty-sixth parameter value can be any value between 3.5 mm and 4.5 mm. The thirty-sixth parameter value can be 3.5 mm, 4 mm or 4.5 mm. Avoid making the seventh gap too small to avoid interference.

[0372] The seventh gap G7≤the thirty-seventh parameter value. The thirty-seventh parameter value may be any value between 6 mm and 7 mm. The thirty-seventh parameter value may be 6 mm, 6.5 mm or 7 mm. Avoiding the seventh gap from being too large can avoid noise and reduce air volume loss.

[0373] In this application, reference is made to Fig.30 The minimum gap between the indoor fan and the first stage heat exchanger may be the second gap G2.

[0374] The second gap G2≤parameter value 19. Parameter value 19 can be any value between 28mm-32mm. Parameter value 19 can be 28mm, 30mm or 32mm. Avoid the second gap being too large, ensure the air volume and noise-free, and limit the minimum gap between the first heat exchanger and the indoor fan within a certain range, so that the front and rear dimensions and height dimensions of the air conditioner indoor unit will not be too large, ensuring the possibility of installing the air conditioner indoor unit in a small space, and the air conditioner indoor unit can be installed above the indoor door or window.

[0375] In this application, reference is made to Fig.30 , the eighteenth parameter value ≤ the second gap G2. The eighteenth parameter value can be any value between 6mm-8mm. The eighteenth parameter value can be 6mm, 7mm or 8mm. Avoid the second gap being too small, avoid the indoor fan and the first section heat exchanger being too close to affect the air volume and the heat exchange performance of the indoor heat exchanger, and avoid the indoor fan and the first section heat exchanger being too close to cause noise.

[0376] In this application, reference is made to Fig.30 , the minimum gap between the indoor fan and the second heat exchanger can be the third gap G3.

[0377] The third gap G3≤parameter value 21. The parameter value 21 can be any value between 28mm-32mm. The parameter value 21 can be 28mm, 30mm or 32mm. Avoid the third gap being too large, ensure the air volume and noise-free, and limit the minimum gap between the second-stage heat exchanger and the indoor fan to a certain range, so that the front and rear dimensions and height dimensions of the air conditioner indoor unit will not be too large, ensuring the possibility of installing the air conditioner indoor unit in a small space, and the air conditioner indoor unit can be installed above the indoor door or window.

[0378] In this application, reference is made to Fig.30 , the 20th parameter value ≤ the third gap G3. The 20th parameter value can be any value between 6mm-8mm. The 20th parameter value can be 6mm, 7mm or 8mm. Avoid the third gap being too small, avoid the indoor fan and the first section heat exchanger being too close to affect the air volume and the heat exchange performance of the indoor heat exchanger, and avoid the indoor fan and the first section heat exchanger being too close to cause noise.

[0379] In this application, reference is made to Fig.31 The distance between the rear end of the first heat exchanger and the front end of the front volute tongue air inlet section in the front-to-rear direction of the main body may be a seventh distance L7.

[0380] In the present application, in the front-to-back direction of the main body, the rear end of the first heat exchanger is located behind the front end of the front volute air inlet section, which can reduce the front-to-back dimensions of the air conditioner indoor unit and ensure the possibility of installation in a small space.

[0381] In the present application, the rear end of the first heat exchanger is located in front of the front volute tongue air outlet section.

[0382] In the present application, the seventh distance L7 ≥ the twenty-second parameter value. The twenty-second parameter value may be any value between 4 mm and 6 mm. The twenty-second parameter value may be 4 mm, 5 mm or 6 mm.

[0383] When the rear end of the first heat exchanger is located behind the front end of the front volute tongue air inlet section, setting the seventh distance L7≥the twenty-second parameter value can enable the rear end of the first heat exchanger to be inserted a distance behind the front end of the front volute tongue air inlet section, thereby reducing the amount of air entering the gap between the front volute tongue air inlet section and the first heat exchanger, avoiding the generation of eddy currents at the front end of the front volute tongue air inlet section, making the air intake uniform, avoiding the generation of discontinuous noise at the front end of the front volute tongue air inlet section, and avoiding affecting the wind resistance resistance of the first heat exchanger.

[0384] In the present application, the thirty-eighth parameter value is greater than or equal to the seventh distance L7. The thirty-eighth parameter value may be any value between 9 mm and 11 mm. The thirty-eighth parameter value may be 9 mm, 10 mm, or 11 mm.

[0385] When the rear end of the first heat exchanger is located behind the front end of the front volute tongue air inlet section, the thirty-eighth parameter value is set ≥ the seventh distance L7 to avoid the rear end of the first heat exchanger from being inserted too far behind the front end of the front volute tongue air inlet section, to avoid excessive wind resistance at the lower end of the first heat exchanger, to avoid causing a small amount of air flow at the lower end of the first heat exchanger, to avoid affecting the heat exchange performance of the lower end of the first heat exchanger, and to ensure the heat exchange efficiency of the lower end of the first heat exchanger.

[0386] When the rear end of the first heat exchanger is located in front of the front end of the front volute tongue air inlet section, setting the thirty-eighth parameter value ≥ the seventh distance L7 can reduce the front and rear dimensions of the air conditioner indoor unit and ensure the possibility of small space installation.

[0387] In this application, reference is made to Fig.31 , the distance between the rear end of the first heat exchanger and the rotation center of the indoor fan in the front-to-back direction of the main body can be a sixth distance L6. The sixth distance L6≤the sixteenth parameter value. The sixteenth parameter value can be any value between 18mm-22mm. The sixteenth parameter value can be 18mm, 20mm or 22mm. Prevent a large amount of airflow from entering the gap between the indoor fan and the front volute tongue, ensure the air volume while avoiding noise, and can reduce the front-to-back dimensions of the air conditioner indoor unit, ensuring the possibility of installation in a small space.

[0388] In this application, reference is made to Figure 30-Figure 31 , the housing includes a rear volute tongue 127.

[0389] On the flow path of air from the indoor air inlet to the indoor air outlet, the end of the rear volute tongue close to the indoor air inlet can be the rear volute tongue air inlet end 1271.

[0390] In the present application, in the height direction of the main body, the top end of the second section heat exchanger is higher than the air inlet end of the rear volute tongue, which can fully utilize the space in the casing and reduce the height size of the air conditioner indoor unit.

[0391] In this application, reference is made to Fig.32 The minimum gap between the rear volute air inlet end 1271 and the second section heat exchanger can be the fourth gap G4.

[0392] The fourth gap G4 is greater than or equal to the twenty-fourth parameter value. The twenty-fourth parameter value may be any value between 10 mm and 14 mm. The twenty-fourth parameter value may be 10 mm, 12 mm, or 14 mm. A certain distance is ensured between the second section heat exchanger and the air inlet end of the rear volute tongue, so that air can also pass through the top of the second section heat exchanger. The air passing through the top of the second section heat exchanger can flow downward to the air inlet end of the rear volute tongue and flow out of the indoor air outlet through the indoor fan, thereby ensuring the air volume and improving the heat exchange performance of the top section of the second section heat exchanger.

[0393] In the present application, the fourth gap G4≤the twenty-fifth parameter value. The twenty-fifth parameter value may be any value between 45 mm and 55 mm. The twenty-fifth parameter value may be 45 mm, 50 mm, or 55 mm. This ensures that the distance between the air inlet end of the rear volute tongue and the second section heat exchanger is not too large, and that the front and rear dimensions of the indoor unit of the air conditioner are not too large, thereby ensuring the possibility of installation in a small space.

[0394] In this application, reference is made to Fig.33 The casing may include an upper inflection surface 128. The bottom end of the upper inflection surface may be connected to the air inlet end of the rear volute tongue.

[0395] In the height direction of the main body, the top end of the second section heat exchanger is higher than the bottom end of the upper inflection surface. The second section heat exchanger is located in front of the upper inflection surface.

[0396] The top of the second heat exchanger is located in front of the upper inflection surface. The upper inflection surface can guide the air flowing downward from the top of the second heat exchanger to the air inlet end of the rear volute tongue, thereby improving the heat exchange performance of the upper part of the second heat exchanger.

[0397] The upper inflection surface is arranged along the length direction of the main body. In the front-rear direction of the main body, the top end of the upper inflection surface is located in front of the bottom end of the upper inflection surface.

[0398] refer to Fig.33 The angle between the upper inflection surface and the height direction of the main body is the fourth angle α4.

[0399] The fourth angle α4<the twenty-sixth parameter value. The twenty-sixth parameter value may be any value between 45° and 55°. The twenty-sixth parameter value may be 45°, 50°, or 55°. While being able to guide, the space between the upper inflection surface and the second section of the heat exchanger is large enough to ensure the air intake and heat exchange efficiency of the upper section of the second section of the heat exchanger.

[0400] 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", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0401] 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.

[0402] 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.

[0403] 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 of the main body to the other side end of the main body, and the main body at least includes a first cavity located in the main body; The subject includes: A casing, wherein an indoor air inlet is provided on the front side of the casing, an indoor air outlet is provided on the bottom of the casing, and both the indoor air outlet and the indoor air inlet are connected to the first cavity; an indoor heat exchanger, disposed in the first chamber; an indoor fan, arranged in the first cavity, the indoor fan being located at a side of the indoor heat exchanger away from the indoor air inlet, the indoor fan driving 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 top end of the indoor heat exchanger is located in front of the bottom end of the indoor heat exchanger, the bottom end of the indoor heat exchanger to the top end of the indoor heat exchanger is the width direction of the indoor heat exchanger, and the angle between the width direction of the indoor heat exchanger and the horizontal plane is the eighth angle α8.

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 of the main body to the other side end of the main body, and the main body at least includes a first cavity located in the main body; The subject includes: A casing, wherein an indoor air inlet is provided on the front side of the casing, an indoor air outlet is provided on the bottom of the casing, and both the indoor air outlet and the indoor air inlet are connected to the first cavity; an indoor heat exchanger, disposed in the first chamber; an indoor fan, disposed in the first cavity, the indoor fan being located on a side of the indoor heat exchanger away from the indoor air inlet; The air conditioner indoor unit comprises: An air inlet shell having an air inlet duct formed therein, the air inlet duct being connected to the first cavity through the indoor air inlet, and a first vent being formed on the air inlet shell, the first vent being connected to the air inlet duct; The indoor fan drives air from the first vent into the air inlet duct, the air in the air inlet duct enters the first cavity through the indoor air inlet 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 top end of the indoor heat exchanger is located in front of the bottom end of the indoor heat exchanger, the bottom end of the indoor heat exchanger to the top end of the indoor heat exchanger is the width direction of the indoor heat exchanger, and the angle between the width direction of the indoor heat exchanger and the horizontal plane is the eighth angle α8.

3. 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 of the main body to the other side end of the main body, and the main body at least includes a first cavity located in the main body; The subject includes: A casing, wherein an indoor air inlet is provided on the front side of the casing, and the indoor air inlet is communicated with the first cavity; an indoor heat exchanger, disposed in the first chamber; an indoor fan, disposed in the first cavity, the indoor fan being located on a side of the indoor heat exchanger away from the indoor air inlet; The air conditioner indoor unit comprises: An air outlet device is provided below the main body and located in a second installation opening of the suspended ceiling, the air outlet device is formed with a first air outlet, an air outlet duct is formed in the air outlet device, and the air outlet duct connects the first air outlet and the first cavity; 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, and the air in the air outlet duct flows out through the first air outlet; The top end of the indoor heat exchanger is located in front of the bottom end of the indoor heat exchanger, the bottom end of the indoor heat exchanger to the top end of the indoor heat exchanger is the width direction of the indoor heat exchanger, and the angle between the width direction of the indoor heat exchanger and the horizontal plane is the eighth angle α8.

4. The air conditioner indoor unit according to claim 1, 2 or 3, characterized in that: The 40th parameter value ≥ α8 and / or α8 ≥ the 39th parameter value, the 39th parameter value is any value between 15°-25°, and the 40th parameter value is any value between 65°-75°.

5. The air conditioner indoor unit according to claim 1, 2 or 3, characterized in that: The indoor fan includes an indoor fan, the minimum gap between the indoor heat exchanger and the indoor fan is the eighth gap G8, the forty-first parameter value ≤ the eighth gap G8 and / or the eighth gap G8 ≤ the forty-second parameter value, the forty-first parameter value is any value between 7mm-9mm, and the forty-second parameter value is any value between 28mm-32mm.

6. The air conditioner indoor unit according to claim 1, 2 or 3, characterized in that: The indoor fan includes an indoor fan, the casing includes a front volute tongue, the minimum gap between the indoor fan and the front volute tongue is the seventh gap G7, the thirty-sixth parameter value ≤ the seventh gap G7 and / or the seventh gap G7 ≤ the thirty-seventh parameter value, the thirty-sixth parameter value is any value between 3.5mm-4.5mm, and the thirty-seventh parameter value is any value between 6mm-7mm.

7. The air conditioner indoor unit according to claim 6, characterized in that: The front volute tongue comprises: A front volute tongue air inlet section, on the flow path of air from the indoor air inlet to the indoor air outlet, the front volute tongue air inlet section is located at an end of the front volute tongue away from the indoor air outlet, and an end of the front volute tongue air inlet section close to the indoor air inlet is the front end of the front volute tongue air inlet section; The distance between the rear end of the indoor heat exchanger and the front end of the front volute tongue air inlet section in the front-to-back direction of the main body is the tenth distance L10, the tenth distance L10 ≥ the forty-third parameter value and / or the forty-fourth parameter value ≥ the tenth distance L10, the forty-third parameter value is any value between 4mm-6mm, and the forty-fourth parameter value is any value between 9mm-11mm.

8. The air conditioner indoor unit according to claim 1, 2 or 3, characterized in that: The indoor fan includes an indoor fan, and the distance between the rear end of the indoor heat exchanger and the rotation center of the indoor fan in the front-to-rear direction of the main body is a ninth distance L9, the ninth distance L9≤the forty-fifth parameter value, and the forty-fifth parameter value is any value between 18mm-22mm.

9. The air conditioner indoor unit according to claim 1, 2 or 3, characterized in that: The housing comprises a rear volute tongue, and on the flow path of air from the indoor air inlet to the indoor air outlet, an end of the rear volute tongue close to the indoor air inlet is a rear volute tongue air inlet end; The housing comprises an upper inflection surface, the bottom end of which is connected to the air inlet end of the rear volute tongue; In the height direction of the main body, the top end of the indoor heat exchanger is located above the bottom end of the upper inflection surface; and the indoor heat exchanger is located in front of the upper inflection surface.

10. The air conditioner indoor unit according to claim 9, characterized in that: The upper inflection surface is arranged along the length direction of the main body. In the front-to-back direction of the main body, the top end of the upper inflection surface is located in front of the bottom end of the upper inflection surface. The angle between the upper inflection surface and the height direction of the main body is the ninth angle α9, the forty-sixth parameter value ≤ the ninth angle α9 and / or the ninth angle α9 ≤ the forty-seventh parameter value, the forty-sixth parameter value is any value between 25°-35°, and the forty-seventh parameter value is any value between 55°-65°.

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