Air conditioner indoor unit, air conditioner and partitioned air outlet air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses an air conditioner indoor unit, an air conditioner and a partitioned air outlet air conditioning system. The air outlet grille is arranged at the air outlet and is rotationally connected with the machine shell; the heat exchanger is positioned between the heat exchange fan and the air outlet; the air outlet comprises a first auxiliary air opening and a second auxiliary air opening, the heat exchanger comprises a first heat exchange piece and a second heat exchange piece, the partition plate is arranged at the air outlet channel, and one end of the partition plate is connected with the side, away from the draught fan, of the heat exchanger and located between the first heat exchange piece and the second heat exchange piece. The other end of the partition plate is connected with the machine shell and located between the first sub-air-opening and the second sub-air-opening, the first heat exchange piece is communicated with the first sub-air-opening, and the second heat exchange piece is communicated with the second sub-air-opening. According to the utility model, the heat exchanger and the air outlet are controlled in a zoning manner, and through zoning and double-air-outlet temperature control, the room temperature can be quickly reduced, and cold air is prevented from directly blowing people.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioning indoor unit, an air conditioner and a zoned air outlet air conditioning system. Background Art

[0002] In recent years, the outdoor temperature has continued to rise in summer, and users have an urgent need for cooling. The existing air outlet of air conditioners is not zoned, and the air outlet temperature in cooling mode is low. A large number of mothers, infants, and elderly users have reported poor physical sensations, and even caused "air conditioning disease". In order to meet the needs of special groups such as mothers, infants, and the elderly, and to avoid cold wind blowing directly on people, many brands have launched soft wind functions, but the cooling capacity in this mode is low, the indoor temperature drops slowly, and it is difficult to maintain a comfortable room temperature in hot weather. In addition, different users have different degrees of sensitivity to temperature. Some people are afraid of cold and some are afraid of heat in the same room, which makes it difficult to adjust. Utility Model Content

[0003] The purpose of the utility model is to design an air-conditioning indoor unit capable of zone temperature control, an air conditioner and a zone air-discharging air-conditioning system.

[0004] In order to achieve the above object, the utility model provides an air conditioner indoor unit, comprising:

[0005] A casing, provided with an air outlet and an air inlet;

[0006] A heat exchanger is disposed inside the housing and is capable of exchanging heat with air;

[0007] A heat exchange fan, arranged inside the housing, capable of driving air from the air inlet into the housing to perform heat exchange with the heat exchanger, and discharged from the air outlet after the heat exchange is completed;

[0008] an air outlet duct formed in the housing and serving as a flow path for air from the heat exchanger to the air outlet;

[0009] An air outlet grille, disposed at the air outlet and rotatably connected to the housing;

[0010] The heat exchanger is located between the heat exchange fan and the air outlet;

[0011] The air outlet includes a first sub-air outlet and a second sub-air outlet, the heat exchanger includes a first heat exchange plate and a second heat exchange plate, and the air-conditioning indoor unit also includes a partition, which is arranged at the air outlet duct, one end of the partition is connected to the side of the heat exchanger away from the fan and is located between the first heat exchange plate and the second heat exchange plate, the other end of the partition is connected to the casing and is located between the first sub-air outlet and the second sub-air outlet, the first heat exchange plate is connected to the first sub-air outlet, and the second heat exchange plate is connected to the second sub-air outlet.

[0012] In some embodiments of the present application, the air outlet grille includes a first grille and a second grille, the first grille is rotatably connected to the casing and located at the first sub-air outlet, and the second grille is rotatably connected to the casing and located at the second sub-air outlet.

[0013] In some embodiments of the present application, the first heat exchange fin is disposed above the second heat exchange fin, and the first sub-air outlet is disposed above the second sub-air outlet.

[0014] In some embodiments of the present application, the fan outlet of the heat exchange fan is located at the upper end of the casing, the first heat exchange fin and the second heat exchange fin are connected in sequence from top to bottom, and the heat exchanger is gradually inclined from top to bottom toward the fan outlet position of the heat exchange fan, so that the second heat exchange fin is close to the fan outlet of the heat exchange fan.

[0015] In some embodiments of the present application, the angle formed between the first grille and the first sub-air outlet is α°, the angle formed between the second grille and the second sub-air outlet is β°, and α>β.

[0016] The present application also provides an air conditioner, including an air conditioner indoor unit, the air conditioner indoor unit comprising:

[0017] A casing, provided with an air outlet and an air inlet;

[0018] A heat exchanger is disposed inside the housing and is capable of exchanging heat with air;

[0019] A heat exchange fan, arranged inside the housing, capable of driving air from the air inlet into the housing to perform heat exchange with the heat exchanger, and discharged from the air outlet after the heat exchange is completed;

[0020] an air outlet duct formed in the housing and serving as a flow path for air from the air inlet to the air outlet;

[0021] An air outlet grille, disposed at the air outlet and rotatably connected to the housing;

[0022] The air conditioner indoor unit further comprises a partition plate, wherein the partition plate divides the air outlet duct into a first sub-duct and a second sub-duct and divides the air outlet into a first sub-outlet and a second sub-outlet, wherein the first sub-duct is connected to the first sub-outlet, and the second duct is connected to the second sub-outlet;

[0023] The heat exchanger includes a first heat exchange fin and a second heat exchange fin, the first heat exchange fin is located in the first sub-air duct, and the second heat exchange fin is located in the second sub-air duct.

[0024] The present application also provides a zoned air-discharging air-conditioning system, comprising:

[0025] The compressor can compress the refrigerant gas in a low-temperature and low-pressure state to make it a high-temperature and high-pressure state;

[0026] The condenser can condense the high-temperature and high-pressure refrigerant into a high-pressure and low-temperature liquid refrigerant;

[0027] A heat exchanger, the heat exchanger comprising a first heat exchange fin and a second heat exchange fin;

[0028] a first pipeline, a first end of which is communicated with the condenser, and a second end of which is communicated with the compressor, wherein a first stop valve, a first three-way valve, a second three-way valve, a first heat exchange plate, a second heat exchange plate, a third three-way valve, a fourth three-way valve and a second stop valve are sequentially connected in series between the first end and the second end of the first pipeline;

[0029] a first branch pipe, a second branch pipe and a third branch pipe, the first three-way valve is connected to the first pipeline between the first heat exchange plate and the second heat exchange plate through the first branch pipe, the second three-way valve is connected to the fourth three-way valve through the second branch pipe, and the third three-way valve is connected to the first pipeline between the first stop valve and the first three-way valve through the third branch pipe.

[0030] In some embodiments of the present application, a first electronic expansion valve is further provided between the condenser and the first end of the first pipeline.

[0031] In some embodiments of the present application, a second electronic expansion valve is further connected in series on the first pipeline, and the second electronic expansion valve is located between the first branch pipe and the second heat exchange plate; temperature sensors are provided on the first heat exchange plate and the second heat exchange plate.

[0032] In some embodiments of the present application, it also includes: a four-way valve and a second pipeline, a gas-liquid separator is also provided between the second end of the first pipeline and the compressor, the compressor and the condenser are connected through the second pipeline, the four-way valve connects the second pipeline, and the first pipeline between the second stop valve and the gas-liquid separator.

[0033] Compared with the prior art, the air conditioner indoor unit, air conditioner and zoned air outlet air conditioning system of the utility model have the following beneficial effects:

[0034] The air-conditioning indoor unit and the zoned air-conditioning system of the utility model divide the air outlet and the air duct into zones, and two heat exchangers are correspondingly arranged. Through the zoned and dual air outlet temperature control, the indoor temperature can be quickly reduced, while avoiding the direct blowing of cold wind on people, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1is a structural schematic diagram of an air conditioner indoor unit according to an embodiment;

[0036] Figure 2 is a system flow chart of a zoned air-discharging air-conditioning system in a refrigeration cycle state according to an embodiment;

[0037] Figure 3 is a system flow chart of a zoned air-discharging air-conditioning system in a heating cycle state according to an embodiment;

[0038] Figure 4 is a system flow chart of the zoned air-discharging air-conditioning system in the strong cooling state of zone A in the intelligent air-discharging mode according to the embodiment;

[0039] Figure 5 is a system flow chart of a zoned air-discharging air-conditioning system in a strong cooling state of zone B in an intelligent air-discharging mode according to an embodiment;

[0040] Figure 6 is a control logic diagram of a zoned air-conditioning system according to an embodiment;

[0041] Figure 7 is a schematic structural diagram of a first three-way valve according to an embodiment.

[0042] In the figure, 1, housing; 10, air outlet duct; 101, first sub-duct; 102, second sub-duct; 11, air inlet; 12, air outlet; 121, first sub-duct; 122, second sub-duct; 2, heat exchange fan; 3, heat exchanger; 31, first heat exchange plate; 311, temperature sensor; 32, second heat exchange plate; 4, air outlet grille; 41, first grille; 42, second grille; 5, partition; 61, compressor; 62, condenser; 63, gas-liquid separator; 71. First pipeline; 72. Second pipeline; 81. First stop valve; 82. First three-way valve; 821. Position 1 of the first three-way valve; 822. Position 2 of the first three-way valve; 823. Position 3 of the first three-way valve; 83. Second three-way valve; 84. Third three-way valve; 85. Fourth three-way valve; 86. Second stop valve; 87. First electronic expansion valve; 88. Second electronic expansion valve; 89. Four-way valve; 91. First branch pipe; 92. Second branch pipe; 93. Third branch pipe. DETAILED DESCRIPTION

[0043] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present invention should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or a welding connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0047] The air conditioner performs the refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged. The compressor compresses the refrigerant gas in a low-temperature and low-pressure state and discharges the refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0048] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0049] The air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit. The air conditioner outdoor unit refers to a part of a refrigeration cycle including a compressor and an outdoor heat exchanger. The air conditioner indoor unit includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0050] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. 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.

[0051] The present application provides an air conditioner indoor unit and an air conditioner, wherein the air conditioner indoor unit is suitable for an air supply mechanism in the air conditioner, and is used to drive air flow through a heat exchanger of the air conditioner.

[0052] Reference Figure 1 and Figure 2 , an air conditioner indoor unit according to an embodiment of the utility model comprises:

[0053] The housing 1 is provided with an air outlet 12 and an air inlet 11;

[0054] The heat exchanger 3 is arranged inside the housing 1 and can exchange heat with the air;

[0055] The heat exchange fan 2 is arranged inside the housing 1, and can drive air to enter the housing 1 from the air inlet 11 to perform heat exchange with the heat exchanger 3, and be discharged from the air outlet 12 after the heat exchange is completed;

[0056] An air outlet duct 10 is formed in the housing 1 and serves as a flow path for air from the heat exchanger 3 to the air outlet 12;

[0057] An air outlet grille 4 is disposed at the air outlet 12 and is rotatably connected to the housing 1;

[0058] The heat exchanger 3 is located between the heat exchange fan 2 and the air outlet 12;

[0059] The air outlet 12 includes a first sub-air outlet 121 and a second sub-air outlet 122, the heat exchanger 3 includes a first heat exchange plate 31 and a second heat exchange plate 32, and the air conditioner indoor unit also includes a partition 5, which is arranged at the air outlet duct 10, one end of the partition 5 is connected to the side of the heat exchanger 3 away from the fan and is located between the first heat exchange plate 31 and the second heat exchange plate 32, and the other end of the partition 5 is connected to the housing 1 and is located between the first sub-air outlet 121 and the second sub-air outlet 122, the first heat exchange plate 31 is connected to the first sub-air outlet 121, and the second heat exchange plate 32 is connected to the second sub-air outlet 122. Through the arrangement of the first heat exchange plate 31, the second heat exchange plate 32 and the double air outlet 12, the air outlet temperatures between the two air outlets 12 can be different, so that the indoor temperature can be quickly reduced, and at the same time, the cold wind can be prevented from blowing directly on people, thereby improving the user experience.

[0060] In some embodiments of the present application, the air outlet grille 4 includes a first grille 41 and a second grille 42, wherein the first grille 41 is rotatably connected to the housing 1 and is located at the first sub-air outlet 121, and the second grille 42 is rotatably connected to the housing 1 and is located at the second sub-air outlet 122. The angle between the first grille 41 and the first sub-air outlet 121 is α, and the angle between the second grille 42 and the second sub-air outlet 122 is β, and the air outlet directions of the first sub-air outlet 121 and the second sub-air outlet 122 can be controlled respectively by rotating the first grille 41 and the second grille 42 respectively.

[0061] In some embodiments of the present application, the first heat exchange plate 31 is arranged above the second heat exchange plate 32, and the first sub-air vent 121 is arranged above the second sub-air vent 122, so that the air-conditioning outlet 12 is divided into upper and lower partitions, and the air-conditioning temperature can be adjusted in a vertical manner, which is more friendly to users at different heights.

[0062] In some embodiments of the present application, the fan outlet 12 of the heat exchange fan 2 is located at the upper end of the housing 1, the first heat exchange fin and the second heat exchange fin are connected in sequence from top to bottom, and the heat exchanger 3 is gradually tilted from top to bottom toward the fan outlet 12 of the heat exchange fan 2, so that the second heat exchange fin 32 is close to the fan outlet 12 of the heat exchange fan 2. The distances from the first heat exchange fin 31 and the second heat exchange fin 32 to the fan outlet 12 are controlled so that the wind energy from the fan outlet 12 is more evenly distributed to the first heat exchange fin 31 and the second heat exchange fin 32.

[0063] In some embodiments of the present application, the angle formed between the first grille 41 and the first sub-air outlet 121 is α°, the angle formed between the second grille 42 and the second sub-air outlet 122 is β°, and α>β. The first sub-air outlet 121 is located at the upper end and cooperates with the first grille 41 with a larger angle, and the second sub-air outlet 122 is located at the lower end and cooperates with the second grille 42 with a smaller angle, so that the air outlet range of the air outlet can be increased.

[0064] The present application also provides an air conditioner, including an air conditioner indoor unit, the air conditioner indoor unit comprising:

[0065] The housing 1 is provided with an air outlet 12 and an air inlet 11;

[0066] The heat exchanger 3 is arranged inside the housing 1 and can exchange heat with the air;

[0067] The heat exchange fan 2 is arranged inside the housing 1, and can drive air to enter the housing 1 from the air inlet 11 to perform heat exchange with the heat exchanger 3, and be discharged from the air outlet 12 after the heat exchange is completed;

[0068] An air outlet duct 10 is formed in the housing 1 and serves as a flow path for air from the air inlet 11 to the air outlet 12;

[0069] An air outlet grille 4 is disposed at the air outlet 12 and is rotatably connected to the housing 1;

[0070] The air conditioner indoor unit further includes a partition 5, wherein the partition 5 divides the air outlet duct 10 into a first sub-duct 101 and a second sub-duct 102 and divides the air outlet 12 into a first sub-duct 121 and a second sub-duct 122, wherein the first sub-duct 101 is connected to the first sub-duct 121, and the second air duct is connected to the second sub-duct 122;

[0071] The heat exchanger 3 includes a first heat exchange fin 31 and a second heat exchange fin 32 . The first heat exchange fin 31 is located in the first sub-air duct 101 , and the second heat exchange fin 32 is located in the second sub-air duct 102 .

[0072] The present application also provides a zoned air-discharging air-conditioning system, comprising:

[0073] The compressor 61 can compress the refrigerant gas in a low-temperature and low-pressure state to make it into a high-temperature and high-pressure state;

[0074] The condenser 62 is capable of condensing the refrigerant in a high-temperature and high-pressure state into a high-pressure and low-temperature liquid refrigerant;

[0075] A heat exchanger 3, wherein the heat exchanger 3 comprises a first heat exchange fin 31 and a second heat exchange fin 32;

[0076] A first pipe 71, a first end of which is in communication with the condenser 62, and a second end of which is in communication with the compressor 61, wherein a first stop valve 81, a first three-way valve 82, a second three-way valve 83, a first heat exchange plate 31, a second heat exchange plate 32, a third three-way valve 84, a fourth three-way valve 85 and a second stop valve 86 are sequentially connected in series between the first end and the second end of the first pipe 71;

[0077] A first branch pipe 91, a second branch pipe 92 and a third branch pipe 93, the first three-way valve 82 is connected to the first pipeline 71 between the first heat exchange plate 31 and the second heat exchange plate 32 through the first branch pipe 91, the second three-way valve 83 is connected to the fourth three-way valve 85 through the second branch pipe 92, and the third three-way valve 84 is connected to the first pipeline 71 between the first stop valve 81 and the first three-way valve 82 through the third branch pipe 93.

[0078] The connection between the first heat exchange plate 31 and the second heat exchange plate 32 can be adjusted by four three-way valves to be changed into parallel connection or series connection.

[0079] In some embodiments of the present application, a first electronic expansion valve 87 is further provided between the condenser 62 and the first end of the first pipe 71. The first electronic expansion valve 87 has a throttling function and can control and adjust the temperature.

[0080] In some embodiments of the present application, the first pipeline is further connected in series with a second electronic expansion valve 88, and the second electronic expansion valve 88 is located between the first branch pipe 91 and the second heat exchanger 32; the first heat exchanger 31 and the second heat exchanger 32 are both provided with a temperature sensor 311. The temperature sensor 311 cooperates with the second sub-expansion valve to better adjust the temperature.

[0081] In some embodiments of the present application, it also includes: a four-way valve 89 and a second pipeline 72. A gas-liquid separator 63 is also provided between the second end of the first pipeline 71 and the compressor 61. The compressor 61 and the condenser 62 are connected through the second pipeline 72. The four-way valve 89 connects the second pipeline 72 and the first pipeline 71 between the second stop valve 86 and the gas-liquid separator 63.

[0082] The three-way valves used in this application all have a closing function, see the attached Figure 7 Taking the first three-way valve 82 as an example, the interfaces along the clockwise direction are position 1 821 of the first three-way valve, position 2 822 of the first three-way valve, and position 3 823 of the first three-way valve. When the corresponding interface of the three-way valve is closed, the pipeline connected thereto is indicated by a dotted line, indicating that no refrigerant flows.

[0083] The cooling mode of the air conditioning system can be divided into a normal mode and an intelligent air outlet mode, wherein the intelligent air outlet mode can be further divided into a strong cooling mode in zone A and a strong cooling mode in zone B. In a specific embodiment of the present application, zone A corresponds to the first heat exchange plate 31, the first sub-air outlet 121, the first sub-air duct 101 and the first heat exchange plate 31, and zone B corresponds to the second heat exchange plate 32, the second sub-air outlet 122, the second sub-air duct 102 and the second heat exchange plate 32. The opening and closing conditions of each three-way valve and the pipeline flow conditions in the specific mode are as follows:

[0084] 1. Conventional cooling and heating modes:

[0085] See also Figure 2 and Figure 3In the conventional cooling and heating cycle, the 3rd position of the first three-way valve 82, the 1st position of the second three-way valve 83, and the 3rd position of the third three-way valve 84 are all closed, and the second electronic expansion valve 88 is fully opened, and its throttling function is temporarily not used; the first indoor heat exchanger and the second heat exchanger are connected in parallel, and the first electronic expansion valve 87 self-regulates according to the exhaust superheat DSH (the suction superheat SSH in the heating mode) to play a throttling role. At this time, the entire system is a conventional cooling and heating system.

[0086] Taking refrigeration as an example, the pipeline flow of the conventional mode system is as follows: the low-temperature, low-pressure gaseous refrigerant is compressed into a high-temperature, high-pressure state by the compressor 61, enters the condenser 62 through the four-way valve 89 and condenses into a high-pressure, low-temperature liquid refrigerant, and after throttling and reducing the pressure at the first electronic expansion valve 87 to become a low-temperature, low-pressure two-phase refrigerant, enters the room through the first stop valve 81 on the first pipeline 71, and the refrigerant is divided into two paths after passing through the 1st to 2nd positions of the first three-way valve 82, one path flows through the first heat exchange plate 31 and the 2nd to 3rd positions of the second three-way valve 83; the other path flows through the second electronic expansion valve 88 (fully open without throttling effect), the second heat exchange plate 32, and the 1st to 2nd positions of the third three-way valve 84, and the two paths of refrigerant converge at the fourth three-way valve 85, and return to the compressor 61 through the second stop valve 86, the four-way valve 89, and the gas-liquid separator 63, and the cycle repeats. At this time, the grille angles at the first sub-air inlet 121 and the second sub-air inlet 122 are the same, that is, α=β.

[0087] 2. Intelligent air outlet mode

[0088] When the intelligent air outlet mode is turned on, the default setting is to avoid people with cold air. At the same time, the user is allowed to switch the cooling zone according to the actual indoor conditions, that is, strong cooling in zone A or strong cooling in zone B can be selected. This mode mainly differs from the normal mode in terms of the indoor refrigerant state, flow direction, and air outlet grille 4.

[0089] Strong cold state in zone A:

[0090] See also Figure 4 When the strong cooling state of zone A in the intelligent air outlet mode is turned on, positions 1 to 3 of the first three-way valve 82, position 1 of the second three-way valve 83, position 1 of the third three-way valve 84, and position 1 of the fourth three-way valve 85 are all closed, and the first heat exchanger 31 and the second heat exchanger 32 are connected in series. The opening degree of the first electronic expansion valve 87 is EEV1, and it is adjusted according to the coil temperature measured by the temperature sensor in the second heat exchanger 32 to ensure that the air outlet temperature of zone B is maintained between T3 and T4; the opening degree of the second electronic expansion valve 88 is EEV2, and it is self-regulated according to the exhaust superheat DSH.

[0091] At this time, the system pipeline circulation is as follows: after the refrigerant flows out of the condenser 62, it is first throttled and depressurized to a medium temperature and medium pressure state by the first electronic expansion valve 87, and then enters the room through the first stop valve 81, passes through the third three-way valve 84 at positions 2-3, first passes through the second heat exchange plate 32, and then throttled and depressurized to a low temperature and low pressure state by the second electronic expansion valve 88 to enter the first heat exchange plate 31, and flows out of the room through positions 2-3 of the second three-way valve 83 and positions 2-3 of the fourth three-way valve 85. At this time, the grille angles at the first sub-air vent 121 and the second sub-air vent 122 are different, α and β, respectively, and α>β (α and β are related to parameters such as machine model, installation, and room structure).

[0092] Strong cold state in zone B:

[0093] like Figure 5 As shown, when the strong cooling state of area B in the intelligent air outlet mode is turned on, the 2nd position of the first three-way valve 82, the 3rd position of the second three-way valve 83, the 3rd position of the third three-way valve 84, and the 3rd position of the fourth three-way valve 85 are closed, and the first heat exchanger 31 and the second heat exchanger 32 are connected in series. The opening degree of the first electronic expansion valve 87 is EEV1, and it is adjusted according to the coil temperature measured by the temperature sensor 311 in the first heat exchanger 31 to ensure that the air outlet temperature of area A is maintained between T3 and T4; the opening degree of the second electronic expansion valve 88 is EEV2, and it is self-regulated according to the exhaust superheat DSH.

[0094] At this time, the flow of the system pipeline is as follows: after the refrigerant flows out of the condenser 62, it is first throttled and depressurized to a medium temperature and medium pressure state by the first electronic expansion valve 87, and then enters the room through the first stop valve 81, passes through the 1 and 3 positions of the first three-way valve 82, and the 1-2 positions of the second three-way valve 83, first passes through the first heat exchange plate 31, and then throttled and depressurized to a low temperature and low pressure state by the second electronic expansion valve 88 to enter the second heat exchange plate 32, and flows out of the room through the 1-2 positions of the third three-way valve 84 and the 1-2 positions of the fourth three-way valve 85. At this time, the grille angles at the first sub-air vent 121 and the second sub-air vent 122 are different, α and β, respectively, and α>β (α and β are related to parameters such as the model, installation, and room structure).

[0095] Combined with the above process description, the control logic of this solution can be referred to Figure 6 . According to user settings, cooling can choose conventional cooling mode, intelligent air outlet mode, and allow users to manually switch zones in intelligent air outlet mode.

[0096] In normal mode, the first three-way valve 82 is turned on at positions 1 and 2, the second three-way valve 83 is turned on at positions 2 and 3, the third three-way valve 84 is turned on at positions 1 and 2, and the fourth three-way valve 85 is turned on at positions 1 to 3, and the first heat exchanger 31 and the second heat exchanger 32 are connected in parallel. The initial opening of the first electronic expansion valve 87 is selected from the calculated value (related to the compressor frequency and ambient temperature). During operation, EEV1 is controlled by the exhaust superheat DSH, and the second electronic expansion valve 88 is fully open (without throttling).

[0097] When the user activates the intelligent air outlet function, the position of the human body is captured by the intelligent camera, and the default setting is cold air to avoid people. If the straight-line distance L between the user and the air outlet 12 is less than or equal to L1, the A zone is strongly cooled, that is, the first three-way valve 82 is fully closed, the 2nd and 3rd positions of the second three-way valve 83 are turned on, the 2nd and 3rd positions of the third three-way valve 84 are turned on, and the 2nd and 3rd positions of the fourth three-way valve 85 are turned on, and the first heat exchanger 31 and the second heat exchanger 32 are connected in series. If the coil temperature TB of the second heat exchanger 32 is less than or equal to T1, the opening degree EEV1 of the first electronic expansion valve 87 is opened wide; if TB>T2, EEV1 is closed to ensure that the air outlet temperature of the B zone is maintained between T3 and T4, which is comfortable for the user; the opening degree of the second electronic expansion valve 88 is EEV2, and it is self-adjusted according to the exhaust superheat.

[0098] The default cold air avoidance state is: if the straight-line distance L between the user and the air outlet 12 is greater than L1, the B zone is strongly cooled, that is, the 1st and 3rd positions of the first three-way valve 82 are turned on, the 1st and 2nd positions of the second three-way valve 83 are turned on, the 1st and 2nd positions of the third three-way valve 84 are turned on, and the 1st and 2nd positions of the fourth three-way valve 85 are turned on, and the indoor heat exchangers 3A and B are connected in series. If the coil temperature of the first heat exchanger 31 is TA≤T1, the opening degree EEV1 of the first electronic expansion valve 87 is opened wide; if TA>T2, EEV1 is closed to ensure that the air outlet temperature of zone A is maintained between T3 and T4, which is comfortable for the user; the opening degree of the second electronic expansion valve 88 is EEV2, and it is self-regulated according to the exhaust superheat.

[0099] The user is allowed to manually switch zones by long pressing the smart air outlet function key: if the straight-line distance between the customer and the air outlet 12 is L≤L1, zone B is forced to cool; if the straight-line distance between the customer and the air outlet 12 is L>L1, zone A is forced to cool, and the control logic is the same as described above.

[0100] Switch the operating mode and automatically exit the intelligent air outlet function.

[0101] In summary, the embodiments of the utility model provide an air-conditioning indoor unit, an air conditioner and a zoned air-conditioning system, which divides the air outlet 12 and the air duct into zones, and correspondingly sets two heat exchangers 3 to match different air outlet grille 4 angles. Through zoning and dual air outlet temperature control, the indoor temperature can be quickly reduced, while avoiding direct cold wind blowing on people, thereby improving the user experience.

[0102] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An air conditioner indoor unit, characterized in that: include: A casing, provided with an air outlet and an air inlet; A heat exchanger is disposed inside the housing and is capable of exchanging heat with air; A heat exchange fan, arranged inside the housing, capable of driving air from the air inlet into the housing to perform heat exchange with the heat exchanger, and discharged from the air outlet after the heat exchange is completed; an air outlet duct formed in the housing and serving as a flow path for air from the heat exchanger to the air outlet; An air outlet grille, disposed at the air outlet and rotatably connected to the housing; The heat exchanger is located between the heat exchange fan and the air outlet; The air outlet includes a first sub-air outlet and a second sub-air outlet, the heat exchanger includes a first heat exchange plate and a second heat exchange plate, and the air-conditioning indoor unit also includes a partition, which is arranged at the air outlet duct, one end of the partition is connected to the side of the heat exchanger away from the fan and is located between the first heat exchange plate and the second heat exchange plate, the other end of the partition is connected to the casing and is located between the first sub-air outlet and the second sub-air outlet, the first heat exchange plate is connected to the first sub-air outlet, and the second heat exchange plate is connected to the second sub-air outlet.

2. The air conditioner indoor unit according to claim 1, characterized in that: The air outlet grille includes a first grille and a second grille, the first grille is rotatably connected to the housing and is located at the first sub-air outlet, and the second grille is rotatably connected to the housing and is located at the second sub-air outlet.

3. The air conditioner indoor unit according to claim 2, characterized in that: The first heat exchange plate is arranged above the second heat exchange plate, and the first sub-air port is arranged above the second sub-air port.

4. The air conditioner indoor unit according to claim 3, characterized in that: The fan outlet of the heat exchange fan is located at the upper end of the casing, the first heat exchange fin and the second heat exchange fin are connected in sequence from top to bottom, and the heat exchanger is gradually inclined from top to bottom toward the fan outlet position of the heat exchange fan, so that the second heat exchange fin is close to the fan outlet of the heat exchange fan.

5. The air conditioner indoor unit according to claim 3, characterized in that: The angle formed between the first grille and the first sub-air outlet is α°, the angle formed between the second grille and the second sub-air outlet is β°, and α>β.

6. An air conditioner, characterized in that: The invention comprises an air conditioner indoor unit, wherein the air conditioner indoor unit comprises: A casing, provided with an air outlet and an air inlet; A heat exchanger is disposed inside the housing and is capable of exchanging heat with air; A heat exchange fan, arranged inside the housing, capable of driving air from the air inlet into the housing to perform heat exchange with the heat exchanger, and discharged from the air outlet after the heat exchange is completed; an air outlet duct formed in the housing and serving as a flow path for air from the air inlet to the air outlet; An air outlet grille, disposed at the air outlet and rotatably connected to the housing; The air conditioner indoor unit further comprises a partition plate, wherein the partition plate divides the air outlet duct into a first sub-duct and a second sub-duct and divides the air outlet into a first sub-outlet and a second sub-outlet, wherein the first sub-duct is connected to the first sub-outlet, and the second sub-duct is connected to the second sub-outlet; The heat exchanger includes a first heat exchange fin and a second heat exchange fin, the first heat exchange fin is located in the first sub-air duct, and the second heat exchange fin is located in the second sub-air duct.

7. A zoned air-conditioning system, characterized in that: include: The compressor can compress the refrigerant gas in a low-temperature and low-pressure state to make it a high-temperature and high-pressure state; The condenser can condense the high-temperature and high-pressure refrigerant into a high-pressure and low-temperature liquid refrigerant; A heat exchanger, the heat exchanger comprising a first heat exchange fin and a second heat exchange fin; a first pipeline, a first end of which is communicated with the condenser, and a second end of which is communicated with the compressor, wherein a first stop valve, a first three-way valve, a second three-way valve, a first heat exchange plate, a second heat exchange plate, a third three-way valve, a fourth three-way valve and a second stop valve are sequentially connected in series between the first end and the second end of the first pipeline; a first branch pipe, a second branch pipe and a third branch pipe, the first three-way valve is connected to the first pipeline between the first heat exchange plate and the second heat exchange plate through the first branch pipe, the second three-way valve is connected to the fourth three-way valve through the second branch pipe, and the third three-way valve is connected to the first pipeline between the first stop valve and the first three-way valve through the third branch pipe.

8. The zoned air-discharging air-conditioning system according to claim 7, characterized in that: A first electronic expansion valve is also provided between the condenser and the first end of the first pipeline.

9. The zoned air-discharging air-conditioning system according to claim 7, characterized in that: The first pipeline is also connected in series with a second electronic expansion valve, and the second electronic expansion valve is located between the first branch pipe and the second heat exchange fin; the first heat exchange fin and the second heat exchange fin are both provided with temperature sensors.

10. The zoned air-discharging air-conditioning system according to claim 7, characterized in that: Also includes: A four-way valve and a second pipeline, a gas-liquid separator is also provided between the second end of the first pipeline and the compressor, the compressor and the condenser are connected through the second pipeline, the four-way valve connects the second pipeline, and the first pipeline between the second stop valve and the gas-liquid separator.

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