Air conditioner indoor unit

Abstract

The present application discloses an air conditioner indoor unit, comprising: a housing, an indoor air outlet, an indoor air return port, an outdoor air outlet, and an outdoor air inlet being provided on the housing, a heat exchange cavity being further provided in the housing, and the indoor air outlet being in communication with the heat exchange cavity; a total heat exchange core, the total heat exchange core being provided with an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel; and a heat exchanger arranged in the heat exchange cavity, wherein the heat exchange cavity is configured to be in communication with or not in communication with the exhaust air heat exchange flow channel, and when the heat exchange cavity is in communication with the exhaust air heat exchange flow channel, part of an airflow subjected to heat exchange by the heat exchanger is conveyed into the exhaust air heat exchange flow channel.

Description

air conditioner indoor unit

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 2025100667282, filed on January 15, 2025, and Chinese patent application No. 2025200981097, filed on January 15, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air handling equipment technology, and more particularly to an indoor air conditioning unit. Background Technology

[0004] Air conditioners are common household appliances. As users' demands for air quality increase, air conditioners equipped with fresh air functions are gradually being promoted and used. Fresh air air conditioners with fresh air functions are usually equipped with a total heat exchange core, which meets the requirement of total heat exchange between indoor and outdoor air.

[0005] In addition, in actual use, there is also a need to regulate the temperature and dehumidify the fresh air through a fresh air conditioner. Summary of the Invention

[0006] According to various embodiments of this application, an air conditioning indoor unit is provided. The air conditioning indoor unit according to the application has high heat dissipation efficiency and dehumidification efficiency, and high operational reliability.

[0007] This application provides an indoor air conditioning unit, comprising: a housing, wherein an indoor air outlet, an indoor return air outlet, an outdoor air outlet, and an outdoor air inlet are disposed on the housing, and a heat exchange cavity is further disposed within the housing, the indoor air outlet being connected to the heat exchange cavity; a total heat exchange core, wherein the total heat exchange core is provided with an exhaust heat exchange channel and a fresh air heat exchange channel, the exhaust heat exchange channel and the fresh air heat exchange channel forming an interleaved channel structure; the total heat exchange core is disposed within the housing, a fresh air passage is formed between the outdoor air inlet, the fresh air heat exchange channel, the heat exchange cavity, and the indoor air outlet, and the indoor return air outlet... An exhaust channel is formed between the exhaust heat exchange channel and the outdoor air outlet; a heat exchanger is disposed in the heat exchange cavity and configured to perform heat exchange treatment on the airflow entering the heat exchange cavity; two fan assemblies are disposed, one of which is disposed in the fresh air channel and the other of which is disposed in the exhaust channel; wherein, the heat exchange cavity is configured to be connected to or not connected to the exhaust heat exchange channel, and when connected to the exhaust heat exchange channel, a portion of the airflow after heat exchange by the heat exchanger is transported to the exhaust heat exchange channel.

[0008] This application also provides an indoor air conditioning unit, comprising: a housing, wherein an indoor air outlet, an indoor return air outlet, an outdoor air outlet, and an outdoor air inlet are provided on the housing, and a heat exchange cavity is further provided in the housing, the indoor air outlet communicating with the heat exchange cavity; a total heat exchange core, wherein the total heat exchange core is provided with an exhaust heat exchange channel and a fresh air heat exchange channel, the exhaust heat exchange channel and the fresh air heat exchange channel forming an interleaved channel structure; the total heat exchange core is disposed in the housing, a fresh air channel is formed between the outdoor air inlet, the fresh air heat exchange channel, the heat exchange cavity, and the indoor air outlet, and an exhaust channel is formed between the indoor return air outlet, the exhaust heat exchange channel, and the outdoor air outlet; and a heat exchanger disposed in the heat exchange cavity. The heat exchanger is configured to perform heat exchange treatment on the airflow entering the heat exchange chamber; and two fan assemblies, one of which is disposed in the fresh air duct and the other of which is disposed in the exhaust air duct; the indoor unit of the air conditioner is configured such that: in a first dehumidification mode, the airflow input from the outdoor air inlet is sequentially discharged from the indoor air outlet via the fresh air heat exchange duct and the heat exchanger; and / or the indoor unit of the air conditioner is configured such that: in a second dehumidification mode, after the airflow input from the outdoor air inlet is sequentially discharged from the indoor air outlet via the fresh air heat exchange duct and the heat exchanger, a portion of the airflow after heat exchange is discharged from the indoor air outlet, and the remaining portion of the airflow after heat exchange is delivered to the exhaust air heat exchange duct.

[0009] Compared with related technologies, this application has the following advantages and beneficial effects. By distributing the airflow after heat exchange in the heat exchanger, a portion of the heat-exchanged airflow can be transported to the exhaust heat exchange channel in dehumidification mode, thus resulting in a lower airflow temperature in the exhaust heat exchange channel. Since the exhaust heat exchange channel and the fresh air heat exchange channel form an interlaced channel structure, during the heat exchange process between the airflow in the exhaust heat exchange channel and the airflow in the fresh air heat exchange channel via the interlaced channel structure, the total heat exchange core can pre-condense and dehumidify the fresh air input from the outdoor air inlet, thereby initially reducing the humidity of the airflow output from the fresh air heat exchange channel. Subsequently, the airflow output from the fresh air heat exchange channel can flow through the heat exchanger again for condensation and dehumidification, thus reducing the humidity of the airflow more efficiently. This application achieves two-stage dehumidification through the cooperation of the total heat exchange core and the heat exchanger, thereby improving the dehumidification efficiency of the air conditioning indoor unit.

[0010] In one embodiment of this application, a partition plate may be provided in the outer casing. The partition plate may surround the inner side of the indoor air outlet, and the partition plate and the outer casing together form the heat exchange cavity. A first vent and a second vent may be provided on the partition plate. The first vent may be located on the windward side of the heat exchanger and may be configured to deliver airflow towards the windward side of the heat exchanger. The second vent may be located on the leeward side of the heat exchanger and may be configured to deliver the airflow after heat exchange in the heat exchanger to the exhaust heat exchange channel.

[0011] According to this application, by setting a partition plate in the outer shell, the first vent on the partition plate allows the airflow output from the fresh air heat exchange channel to enter the heat exchange cavity and exchange heat with the heat exchanger. Similarly, the second vent allows the airflow in the heat exchange cavity that has exchanged heat with the heat exchanger to be transported to the exhaust heat exchange channel. In this way, the air path connection design can be easily realized to meet the airflow requirements under different conditions.

[0012] In one embodiment of this application, a first damper may be provided at the second ventilation opening, and the first damper may be configured to open or close the second ventilation opening.

[0013] In one embodiment of this application, a first partition plate may be provided in the outer casing. The first partition plate may be connected between the total heat exchange core and the partition plate. One end of the first partition plate may isolate the exhaust heat exchange channel and the fresh air heat exchange channel from each other, and the other end of the first partition plate may isolate the first vent and the second vent from each other.

[0014] According to this application, by setting a first partition plate between the partition plate and the total heat exchange core, the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel can be separated by the first partition plate, so that the fresh air channel and the exhaust channel are isolated from each other, ensuring that the indoor exhaust air and the outdoor intake air are independent of each other.

[0015] In one embodiment of this application, a third ventilation opening may be provided on the first partition plate. The third ventilation opening may connect the fresh air duct and the exhaust air duct. A second damper may also be provided in the third ventilation opening, and the second damper may be configured to open or close the third ventilation opening.

[0016] In one embodiment of this application, a second partition plate may also be provided in the housing. One end of the second partition plate may be connected to the total heat exchange core, and the second partition plate may separate the two fan assemblies.

[0017] In one embodiment of this application, the housing may further include an airflow switching component. The airflow switching component may be configured to connect the exhaust heat exchange channel and the heat exchange cavity when the first damper opens the second vent.

[0018] In one embodiment of this application, the outer casing is further provided with an airflow switching component, which can be disposed between the total heat exchange core and the partition plate. The airflow switching component can also be configured to connect the fresh air passage and the exhaust air passage when the second damper is configured to open the third vent.

[0019] In one embodiment of this application, the airflow switching component can be a switching valve. The first valve port of the switching valve can be connected to the exhaust air passage. The second valve port of the switching valve can be connected to the heat exchange chamber. The third valve port of the switching valve can be connected to the fresh air passage. The switching valve can switch the first valve port to connect to either the second or third valve port. The switching valve can also be switched to a closed state for the first valve port.

[0020] In one embodiment of this application, the fresh air heat exchange channel of the total heat exchange core can be arranged at an angle. The fresh air heat exchange channel can also be configured to condense and dehumidify the airflow passing through it.

[0021] In one embodiment of this application, a condensate collection tray may be provided at the bottom of the total heat exchange core. The condensate collection tray may be configured to collect condensate flowing out of the fresh air heat exchange channel.

[0022] In one embodiment of this application, an electric heating element may also be disposed within the housing. The electric heating element may be arranged close to the indoor air outlet. The electric heating element may be spaced apart from the heat exchanger. The electric heating element may be configured to heat the flowing air and cause the heated air to be output from the indoor air outlet.

[0023] Other features and advantages of this application will become clearer after reading the detailed embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the structure of an air conditioner indoor unit according to an embodiment of this application.

[0025] Figure 2 is a second schematic diagram of the structure of an indoor air conditioner unit according to an embodiment of this application.

[0026] Figure 3 is a third schematic diagram of the structure of an air conditioner indoor unit according to an embodiment of this application.

[0027] Figure 4 is one of the structural schematic diagrams of a portion of the indoor unit of the air conditioner in Figure 1.

[0028] Figure 5 is a partial structural schematic diagram of the indoor unit of the air conditioner in Figure 1.

[0029] Figure 6 is the third partial structural schematic diagram of the indoor unit of the air conditioner in Figure 1.

[0030] Figure 7 is a schematic diagram of the insulation frame in Figure 4.

[0031] Figure 8 is one of the structural schematic diagrams of the fan assembly in Figure 4.

[0032] Figure 9 is the second schematic diagram of the fan assembly in Figure 4.

[0033] Figure 10 is a schematic diagram of the threading plate in Figure 6.

[0034] Figure 11 is one of the structural schematic diagrams of the electrical control box in Figure 4.

[0035] Figure 12 is the second schematic diagram of the electrical control box in Figure 4.

[0036] Figure 13 is an exploded view of the electrical control box in Figure 4.

[0037] Figure 14 is a schematic diagram of the heating component in Figure 4.

[0038] Figure 15 is an exploded view of the heating component in Figure 4.

[0039] Figure 16 is a structural schematic diagram of an air conditioner indoor unit according to another embodiment of this application.

[0040] Figure 17 is a structural schematic diagram of an air conditioner indoor unit according to another embodiment of this application.

[0041] Figure 18 is a schematic diagram of the total heat exchange core in Figure 17. Detailed Implementation

[0042] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] The indoor unit of the air conditioner in this application typically includes a casing, a fan, and a total heat exchange core housed within the casing. The casing may have two indoor vents connecting to the indoor side, and two outdoor vents connecting to the outdoor side. Multiple fans may be installed. One of the fans can draw in indoor air through a corresponding indoor vent, then allow the air to flow through the total heat exchange core for heat exchange before being discharged outdoors through a corresponding outdoor vent. Another fan can draw in outdoor air through a corresponding outdoor vent, then allow the air to flow through the total heat exchange core for heat exchange before being discharged indoors through a corresponding indoor vent.

[0044] As shown in Figures 16 and 18, one embodiment of this application provides an indoor air conditioning unit, including a housing 1. The housing 1 may be provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14. A fresh air channel can be formed between the outdoor air inlet 14 and the indoor air outlet 11. The single arrow in Figure 16 shows the airflow path in the fresh air channel. An exhaust air channel can be formed between the indoor return air outlet 12 and the outdoor air outlet 13. The double arrow in Figure 16 shows the airflow path in the exhaust air channel.

[0045] Specifically, the outer casing 1 can serve as the mounting body for the indoor unit of the air conditioner. The outer casing 1 can be provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 to meet the requirements for indoor and outdoor air flow when using the indoor unit of the air conditioner.

[0046] Typically, the indoor air outlet 11 and indoor return air outlet 12 can be formed on the first end face of the outer casing 1, and the outdoor air outlet 13 and outdoor air inlet 14 can be formed on the second end face of the outer casing 1. The first end face and the second end face of the outer casing 1 can be arranged opposite to each other. In other words, the first end face and the second end face of the outer casing 1 can be two opposite surfaces of the outer casing 1.

[0047] The indoor unit of the air conditioner may include a total heat exchange core 2. The total heat exchange core 2 may be disposed in the outer casing 1. The total heat exchange core 2 may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0048] Specifically, the total heat exchange core 2 may be provided with an exhaust heat exchange channel 21 and a fresh air heat exchange channel 22. The exhaust heat exchange channel 21 and the fresh air heat exchange channel 22 may form an interleaved channel structure. Due to the interleaved channel structure, the airflow in the exhaust heat exchange channel and the airflow in the fresh air heat exchange channel can exchange heat with each other.

[0049] The indoor unit of the air conditioner may also include a heat exchanger 5. The heat exchanger 5 may be configured to perform heat exchange treatment on the airflow flowing through it. Specifically, the heat exchanger 5 is capable of performing heat exchange treatment on the airflow flowing through the fresh air duct, and the heat-treated airflow will be output to the room through the indoor air outlet 11.

[0050] The indoor unit of the air conditioner may also include two fan assemblies 3. One of the two fan assemblies 3 may be located in the fresh air duct, and the other of the two fan assemblies 3 may be located in the exhaust air duct. Specifically, the two fan assemblies 3 can be used to meet the driving requirements of indoor and outdoor air flow. One of the two fan assemblies 3 may be located in the fresh air duct to allow fresh outdoor air to enter the casing 1 and be heat-exchanged by the total heat exchange core 2 before being output from the indoor air outlet 11. The other of the two fan assemblies 3 may be located in the exhaust air duct to allow stale indoor air to enter the casing 1 and be heat-exchanged by the total heat exchange core 2 before being output from the outdoor air outlet 13.

[0051] In one embodiment, a heat exchange cavity 10 may also be provided in the outer casing 1. The indoor air outlet 11 is connected to the heat exchange cavity 10. The heat exchanger 5 may be disposed in the heat exchange cavity 10. A fresh air channel may be formed between the outdoor air inlet 14, the fresh air heat exchange channel 22, the heat exchange cavity 10 and the indoor air outlet 11, and an exhaust channel may be formed between the indoor return air outlet 12, the exhaust heat exchange channel 21 and the outdoor air outlet 13.

[0052] The heat exchange chamber 10 can be configured to be connected to or not connected to the exhaust heat exchange channel 21, and when connected to the exhaust heat exchange channel 21, a portion of the airflow after heat exchange by the heat exchanger 5 is transported to the exhaust heat exchange channel 21.

[0053] Specifically, in actual use, under the action of the fan assembly 3, fresh outdoor air can enter the outer shell 1 through the outdoor air inlet 14. After the fresh air passes through the fresh air heat exchange channel 22 of the total heat exchange core 2 for heat exchange treatment, it can enter the heat exchange cavity 10. The fresh air can further exchange heat with the heat exchanger 5 and finally be output from the indoor air outlet 11 to the outside of the outer shell 1 and enter the room.

[0054] When dehumidification is required via the indoor air conditioning unit, the heat exchanger 5 can be in a cooling state. This allows the fresh air flowing through the heat exchanger 5 to condense the moisture in the air, thus achieving dehumidification. When the humidity of the fresh air is high, and the dehumidification effect of the heat exchanger 5 alone is poor, a portion of the first airflow after heat exchange in the heat exchanger 5 can be transported to the exhaust heat exchange channel 21. In this way, the second airflow entering from the indoor return air vent 12 and a portion of the first airflow after heat exchange in the heat exchanger 5 are both transported in the exhaust heat exchange channel 21, making the overall temperature of the airflow in the exhaust heat exchange channel 21 lower than the temperature of the airflow at the indoor return air vent 12.

[0055] During the heat exchange process between the airflow in the exhaust heat exchange channel 21 and the fresh airflow in the fresh air heat exchange channel 22, pre-dehumidification can be achieved through the total heat exchange core 2, so that the fresh air enters the fresh air heat exchange channel 22 for preliminary dehumidification. Then, the humidity of the airflow after preliminary dehumidification output from the fresh air heat exchange channel 22 is reduced, and the airflow is then dehumidified a second time through the heat exchanger 5. In this way, the humidity of the fresh air can be reduced quickly and efficiently to achieve the effect of rapid dehumidification.

[0056] In dehumidification mode, the airflow after heat exchange in heat exchanger 5 is distributed, with a portion of the heat-exchanged airflow being transported to exhaust heat exchange channel 21. This results in a lower airflow temperature in exhaust heat exchange channel 21. During the heat exchange between the airflow in exhaust heat exchange channel 21 and the airflow in fresh air heat exchange channel 22, the total heat exchange core 2 pre-condenses and dehumidifies the fresh air entering from the outdoor air inlet 14, thus initially reducing the humidity of the airflow output from fresh air heat exchange channel 22. Subsequently, the airflow output from fresh air heat exchange channel 22 can flow through heat exchanger 5 for further condensation and dehumidification, thus reducing the humidity of the airflow more efficiently. This application achieves two-stage dehumidification through the cooperation of the total heat exchange core 2 and heat exchanger 5, thereby improving the dehumidification efficiency of the indoor air conditioning unit. In other words, the indoor unit of the air conditioner can be configured such that: in the first dehumidification mode, the airflow input through the outdoor air inlet 14 passes through the fresh air heat exchange channel 22 and the heat exchanger 5 in sequence and is output from the indoor air outlet 11; and / or in the second dehumidification mode, after the airflow input through the outdoor air inlet 14 passes through the fresh air heat exchange channel 22 and the heat exchanger 5 in sequence and undergoes heat exchange, a portion of the heat-exchanged airflow is output from the indoor air outlet 11, and the remaining portion of the heat-exchanged airflow is transported to the exhaust heat exchange channel 21.

[0057] In one embodiment, the heat exchange cavity 10 may be configured to be connected to or not connected to the exhaust heat exchange channel 21. When the heat exchange cavity 10 is connected to the exhaust heat exchange channel 21, a portion of the airflow after heat exchange by the heat exchanger 5 can be transported to the exhaust heat exchange channel 21. Specifically, the airflow that has entered the heat exchange cavity 10 and undergone heat exchange by the heat exchanger 5 can be selectively partially transported to the exhaust heat exchange channel 21 as needed.

[0058] After the airflow that has been condensed and cooled after heat exchange in the heat exchange chamber 10 is partially transported to the exhaust heat exchange channel 21, the overall temperature of the airflow flowing in the exhaust heat exchange channel 21 can be reduced. In this way, the airflow in the exhaust heat exchange channel 21 can exchange heat with the fresh airflow in the fresh air heat exchange channel 22, so that the fresh airflow in the fresh air heat exchange channel 22 can be pre-dehumidified through the total heat exchange core 2.

[0059] In this way, after the fresh air enters the fresh air heat exchange channel 22 for preliminary dehumidification, the humidity of the airflow output from the fresh air heat exchange channel 22 after preliminary dehumidification will decrease. Then, the airflow after preliminary dehumidification can be dehumidified again through the heat exchanger 5. This can quickly and efficiently reduce the humidity of the fresh air to achieve the effect of rapid dehumidification.

[0060] In one embodiment, a partition plate 65 may be provided in the outer casing 1. The partition plate 65 may be disposed inside the indoor air outlet 11. The partition plate 65 may enclose the heat exchange cavity 10 in the outer casing 1. As shown in FIG17, a first vent 651 and a second vent 652 may be provided on the partition plate 65. The first vent 651 may be arranged on the windward side of the heat exchanger 5 and may be configured to deliver airflow toward the windward side of the heat exchanger 5. The second vent 652 may be arranged on the leeward side of the heat exchanger 5 and may be configured to deliver the airflow after heat exchange in the heat exchanger 5 to the exhaust heat exchange channel 21.

[0061] Specifically, a partition plate 65 can be provided in the outer casing 1. The partition plate 65 can be used to enclose the inner side of the indoor air outlet 11 to form a heat exchange cavity 10 to meet the installation requirements of the heat exchanger 5. A first vent 651 is provided on the partition plate 65 to allow airflow from the fresh air heat exchange channel 22 to enter the heat exchange cavity 10 and exchange heat with the heat exchanger 5. For example, the air outlet of the fan assembly 3 located in the fresh air channel can be connected to the first vent 651. Under the action of the fan assembly 3, airflow from the fresh air heat exchange channel 22 can be drawn into the fan assembly 3 and transported from the first vent 651 towards the heat exchanger 5.

[0062] Similarly, the second vent 652 can be used to allow the airflow that has been treated by heat exchanger 5 in heat exchange chamber 10 to be transported to exhaust heat exchange channel 21. Thus, the airflow treated by heat exchanger 5 in heat exchange chamber 10 can be transported to exhaust channel through the second vent 652 and finally flow into exhaust heat exchange channel 21 to meet the airflow requirements under different conditions.

[0063] In one embodiment, as shown in FIG17, a first damper 162 may be provided at the second vent 652, and the first damper 162 may be configured to open or close the second vent 652. The indoor unit of the air conditioner according to this application may also include a controller. The controller may be configured to, for example, control the first damper 162 to open or close the second vent 652 according to a received instruction.

[0064] Specifically, when it is necessary to deliver a portion of the airflow that has undergone heat exchange treatment by the heat exchanger 5 in the heat exchange chamber 10 to the exhaust heat exchange channel 21, the first damper 162 is opened. At this time, a portion of the airflow in the heat exchange chamber 10 flows from the second vent 652 to the exhaust channel and enters the exhaust heat exchange channel 21, while the remaining airflow in the heat exchange chamber 10 can be output from the indoor air outlet 11.

[0065] By setting the first damper 162 to control the opening and closing of the second vent 652, when pre-dehumidification is required through the total heat exchange core 2, the airflow that has been condensed and cooled after heat exchange in the heat exchange chamber 10 by the first damper 162 can be controlled to flow into the total heat exchange core 2. Heat exchange is carried out by utilizing the staggered flow channel structure formed by the exhaust heat exchange channel 21 and the fresh air heat exchange channel 22 to control the pre-dehumidification operation, thereby improving the reliability of control.

[0066] In one embodiment, as shown in FIG17, a first partition plate 16 may be provided in the outer casing 1. The first partition plate 16 may be connected between the total heat exchange core 2 and the partition plate 65. One end of the first partition plate 16 may isolate the exhaust heat exchange channel 21 and the fresh air heat exchange channel 22 from each other, and the other end of the first partition plate 16 may isolate the first vent 651 and the second vent 652 from each other.

[0067] Specifically, the first partition plate 16 provided in the outer casing 1 can separate the fresh air duct and the exhaust air duct between the total heat exchange core 2 and the partition plate 65. The first partition plate 16 can also simultaneously isolate the exhaust air heat exchange channel 21 and the fresh air heat exchange channel 22, and can also isolate the first vent 651 and the second vent 652 to ensure that the indoor exhaust air and the outdoor intake air are independent of each other.

[0068] In one embodiment, as shown in FIG17, a third vent 163 may be provided on the first partition plate 16. The third vent 163 may connect the fresh air duct and the exhaust air duct. A second damper 161 may also be provided in the third vent 163. The second damper 161 may be configured to open or close the third vent 163. In this application, the controller may also be configured to, for example, control the second damper 161 to open or close the third vent 163 according to a received instruction.

[0069] Specifically, when the second damper 161 is closed, the indoor return air vent 12 and the indoor air outlet vent 11 can be isolated, and the exhaust air duct and the fresh air duct can be isolated from each other to meet the requirements of independent indoor and outdoor air intake and exhaust.

[0070] When internal circulation is required, the second air damper 161 can be opened, and the airflow input from the indoor return air inlet 12 can flow into the fan assembly 3 in the fresh air duct and then be delivered to the heat exchange chamber 10 to exchange heat with the heat exchanger 5.

[0071] By controlling the opening or closing of the third ventilation opening 163 through the second damper 161, the indoor return air vent 12 and the indoor air outlet 11 can be interconnected. This allows the indoor temperature to be quickly adjusted when the indoor temperature has not reached the set temperature value. This improves the user experience.

[0072] In one embodiment, as shown in FIG16, an airflow switching component 8 may also be provided in the housing 1. The airflow switching component 8 may be configured to connect or disconnect the exhaust heat exchange channel 21 and the heat exchange cavity 10. In this application, the controller may also be configured to control the switching of the airflow switching component 8, for example, according to received instructions.

[0073] Specifically, the air path switching component 8 can be a switching valve. The air path switching component 8 can connect the exhaust heat exchange channel 21 and the heat exchange cavity 10 according to the usage requirements. For example, when secondary dehumidification is required, when the first damper 162 opens the second vent 652, the air path switching component 8 can be switched to connect the exhaust heat exchange channel 21 and the heat exchange cavity 10.

[0074] The airflow path within the housing 1 can be switched by setting an airflow switching component 8 in the housing 1. When pre-dehumidification treatment is required through the total heat exchange core 2, the airflow switching component 8 connects the exhaust heat exchange channel 21 and the heat exchange chamber 10, thereby controlling the airflow in the heat exchange chamber 10 that has been condensed and cooled after heat exchange by the heat exchanger 5 to flow into the total heat exchange core 2, so as to control the pre-dehumidification operation through heat exchange between the exhaust heat exchange channel 21 and the fresh air heat exchange channel 22, thereby improving the reliability of control.

[0075] In one embodiment of this application, the airflow switching component 8 may be disposed between the total heat exchange core 2 and the partition plate 65. The airflow switching component 8 may also be configured to connect the fresh air passage and the exhaust air passage when the second damper 161 is configured to open the third vent 163.

[0076] Specifically, when internal circulation is required, the air path switching component 8 can connect the fresh air duct and the exhaust air duct, so that the airflow input from the indoor return air vent 12 can flow into the fan assembly 3 in the fresh air duct and then be delivered to the heat exchange chamber 10 to exchange heat with the heat exchanger 5.

[0077] According to the above embodiments of this application, the following advantages or beneficial effects can be achieved. By controlling the connection between the fresh air duct and the exhaust air duct outside the heat exchange chamber 10 through the air duct switching component 8, the indoor return air vent 12 and the indoor air outlet 11 are interconnected. This allows the indoor return air vent 12 to connect with the indoor air outlet 11 when the indoor temperature has not reached the set temperature value, thereby achieving rapid adjustment of the indoor temperature and improving the user experience.

[0078] In one embodiment, the first valve port of the switching valve can be connected to the exhaust air channel, the second valve port of the switching valve can be connected to the heat exchange chamber 10, and the third valve port of the switching valve can be connected to the fresh air channel. The switching valve can switch so that the first valve port is connected to the second valve port or the third valve port; similarly, the switching valve can also switch so that the first valve port is in a closed state.

[0079] In one embodiment of this application, as shown in FIG18, the fresh air heat exchange channel 22 of the total heat exchange core 2 can be arranged at an angle. The fresh air heat exchange channel 22 can also be configured to perform condensation and dehumidification treatment on the flowing air. Specifically, the total heat exchange core 2 can pre-dehumidify the fresh air during use, and condensate will be generated in the fresh air heat exchange channel 22 during the pre-dehumidification process. By setting the fresh air heat exchange channel 22 as an inclined extension structure, the condensate in the fresh air heat exchange channel 22 can be discharged in a timely manner.

[0080] By arranging the fresh air heat exchange channel 22 at an angle, during the pre-dehumidification process of the fresh air entering the fresh air heat exchange channel 22 for condensation and dehumidification, the condensate generated can quickly flow out of the total heat exchange core 2 through the angled fresh air heat exchange channel 22, thereby avoiding the accumulation of condensate in the total heat exchange core 2 and improving the reliability of use.

[0081] In one embodiment, a condensate collection tray (not shown) may also be provided at the bottom of the total heat exchange core 2. The condensate collection tray may be configured to collect condensate flowing out of the fresh air heat exchange channel 22. Specifically, condensate generated from the total heat exchange core 2 during the condensation and dehumidification process can be collected by the condensate collection tray at the bottom of the total heat exchange core 2, and the condensate collection tray can discharge the condensate to the outside through a drain pipe connected to it. Regarding the condensate discharge method, the drainage method of the water collection tray configured at the bottom of the heat exchanger 5 can refer to the drainage structure of a conventional water collection tray installed in the air, and is not limited here.

[0082] By setting a condensate collection tray at the bottom of the total heat exchange core 2, the condensate collection tray can collect the condensate flowing out of the total heat exchange core 2. The condensate collection tray can be connected to a drain pipe to discharge the collected condensate to the outside of the outer casing 1 through the drain pipe.

[0083] In one embodiment of this application, as shown in FIG16, an electric heating component 72 may also be provided in the outer casing 1. The electric heating component 72 may be arranged close to the indoor air outlet 11. The electric heating component 72 and the heat exchanger 5 are spaced apart. The electric heating component 72 may be configured to heat the flowing air and cause the heated air to be output from the indoor air outlet 11.

[0084] Specifically, during the dehumidification process, the temperature of the fresh air will decrease after passing through the heat exchanger 5. To avoid large fluctuations in indoor temperature caused by the fresh air output from the indoor air outlet 11, an electric heating element 72 can be installed at the indoor air outlet 11. The electric heating element 72 heats the airflow processed by the heat exchanger 5 to reduce indoor temperature fluctuations. In order to ensure that the airflow after heat exchange by the heat exchanger 5 can be smoothly transported to the exhaust heat exchange channel 21 during the secondary dehumidification operation, the electric heating element 72 can be arranged at intervals from the heat exchanger 5. In this way, the airflow that needs to be transported to the exhaust heat exchange channel 21 after heat exchange will not be heated by the electric heating element 72.

[0085] By installing an electric heating element 72 at the indoor air outlet 11, the airflow that has been cooled by condensation in the heat exchanger 5 can be heated by the electric heating element 72, thereby reducing the temperature fluctuation range in the room during dehumidification and improving the user experience.

[0086] As shown in Figures 1 to 4, one embodiment of this application provides an indoor air conditioning unit, which may include a housing 1. The housing 1 may be provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14. A fresh air channel may be formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel may be formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0087] Specifically, the outer casing 1 can serve as the mounting body for the indoor unit of the air conditioner. An indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 can be provided on the outer casing 1 to meet the requirements for indoor and outdoor air flow when using the indoor unit of the air conditioner.

[0088] Typically, the indoor air outlet 11 and indoor return air outlet 12 can be formed on the first end face of the outer casing 1, and the outdoor air outlet 13 and outdoor air inlet 14 can be formed on the second end face of the outer casing 1. The first end face and the second end face of the outer casing 1 can be arranged opposite to each other. In other words, the first end face and the second end face of the outer casing 1 can be two opposite surfaces of the outer casing 1.

[0089] The indoor unit of the air conditioner may also include a total heat exchange core 2. The total heat exchange core 2 may be disposed in the outer casing 1. The total heat exchange core 2 may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0090] Specifically, the total heat exchange core 2 may be provided with an exhaust heat exchange channel 21 and a fresh air heat exchange channel 22. The exhaust heat exchange channel 21 and the fresh air heat exchange channel 22 may have an interleaved channel structure. Due to the interleaved channel structure, the airflow in the exhaust heat exchange channel 21 and the airflow in the fresh air heat exchange channel 22 can exchange heat with each other. The indoor return air vent 12, the exhaust heat exchange channel 21, and the outdoor air outlet vent 13 can form an exhaust channel in the outer shell 1, and the outdoor air inlet vent 14, the fresh air heat exchange channel 22, and the indoor air outlet vent 11 can form a fresh air channel in the outer shell 1.

[0091] The indoor unit of the air conditioner may also include a heat exchanger 5. The heat exchanger 5 may be configured to exchange heat with the airflow passing through the fresh air duct.

[0092] Specifically, the heat exchanger 5 can perform heat exchange treatment on the airflow flowing through the fresh air duct, and the heat-treated airflow can be output to the room through the indoor air outlet 11.

[0093] The indoor unit of the air conditioner may also include two fan assemblies 3. Each fan assembly 3 may include a mounting bracket 31 and a fan 32. The fan 32 may be mounted on the mounting bracket 31. One of the two fan assemblies 3 may be located in the fresh air duct, and the other of the two fan assemblies 3 may be located in the exhaust air duct.

[0094] Specifically, two fan assemblies 3 are used to meet the driving requirements of indoor and outdoor air flow. One of the two fan assemblies 3 can be set in the fresh air duct to allow fresh outdoor air to enter the outer casing 1, be heated by the total heat exchange core 2, and then be output from the indoor air outlet 11. The other of the two fan assemblies 3 can be set in the exhaust air duct to allow stale indoor air to enter the outer casing 1, be heated by the total heat exchange core 2, and then be output from the outdoor air outlet 13.

[0095] In one embodiment of this application, as shown in Figures 1 to 4 and Figures 14 to 15, an electric heating assembly 7 may be provided in the outer casing 1 to heat the air after heat exchange treatment by the heat exchanger 5. In one embodiment, as shown in Figures 14 to 15, the electric heating assembly 7 may include an electric auxiliary support 71. The electric auxiliary support 71 may be provided with a first insertion portion 711 and a first connecting portion 712.

[0096] The electric heating assembly 7 may include an electric heating component 72. One end of the electric heating component 72 may be provided with a first insertion mating part 721, and the other end of the electric heating component 72 may be provided with a first connecting mating part 722. The first insertion part 711 can be inserted into the first insertion mating part 721. The first connecting part 712 and the first connecting mating part 722 can be fixedly connected together by screws. The electric auxiliary support 71 may be disposed in the housing 1 and located between the heat exchanger 5 and the indoor air outlet 11.

[0097] Specifically, the electric heating assembly 7 can be heated by an electric heating element 72. The electric heating element 72 can generate heat after being energized to meet the heating requirements. In order to fix the electric heating assembly 7 in the housing 1, the electric heating element 72 can be fixedly installed inside the housing 1 by means of an electric auxiliary bracket 71.

[0098] To facilitate the disassembly, assembly, and maintenance of the electric heating component 72, one end of the electric heating component 72 can be mounted to the electric auxiliary bracket 71 via fasteners, or the other end can be directly inserted into the electric auxiliary bracket 71. For example, during the assembly of the electric heating component 72, one end of the electric heating component 72 can be installed on the electric auxiliary bracket 71 by insertion, while the other end of the electric heating component 72 can be fixedly installed on the electric auxiliary bracket 71 with screws, thereby reducing the number of screws required.

[0099] During the disassembly of the electric heating component 72, only the screws provided at the corresponding ends of the electric heating component 72 need to be unscrewed and removed. The first insertion mating part 721 of the electric heating component 72 can then be directly pulled or pushed to disengage from the first insertion part 711 on the electric auxiliary bracket 71, thus reducing the number of screws that need to be removed.

[0100] By providing a first plug-in portion 711 on the electric auxiliary bracket 71, and correspondingly providing a first plug-in mating portion 721 on the electric heating component 72, one end of the electric heating component 72 can be plugged into the electric auxiliary bracket 71, while the other end is fixedly installed by screws. This reduces the number of screws used; only a small number of screws are needed to fix the electric heating component 72 to the electric auxiliary bracket 71 for assembly. During later maintenance, maintenance personnel can remove the screws at the corresponding end of the electric heating component 72, allowing it to be pulled out of the electric auxiliary bracket 71, thus reducing disassembly and assembly difficulty and improving maintenance convenience.

[0101] In another embodiment, the electric auxiliary bracket 71 may be provided with a second insertion portion 713 and a second connecting portion 714. The top plate of the housing 1 may be provided with a second insertion mating portion (not shown) and a second connecting mating portion (not shown). The second insertion portion 713 can be inserted into the second insertion mating portion, and the second connecting portion 714 and the second connecting mating portion can be fixedly connected together by screws.

[0102] Specifically, the electric heating assembly 7 can be heated by an electric heating element 72. The electric heating element 72 can generate heat after being energized to meet the heating requirements. In order to fix the electric heating assembly 7 in the housing 1, the electric heating element 72 is fixedly installed inside the housing 1 by an electric auxiliary bracket 71.

[0103] To facilitate the disassembly and maintenance of the electric heating assembly 7, it can be installed to the housing 1 using fewer fasteners. For example, during assembly, the auxiliary electric bracket 71 is inserted into the housing 1 via the second insertion part 713, and then the second connecting part 714 and the second connecting part are fixedly connected by screws. Thus, because the auxiliary electric bracket 71 can be connected to the housing via insertion, the number of screws used can be effectively reduced, thereby improving assembly efficiency.

[0104] Similarly, when disassembling and repairing the electric heating assembly 7, only a small number of screws need to be removed. The second plug-in portion 713 of the electric auxiliary bracket 71 can be directly pulled or pushed to disengage from the second plug-in mating portion on the housing 1, thereby reducing the number of screws that need to be removed.

[0105] By providing a second plug-in portion 713 on the electric auxiliary bracket 71, and correspondingly providing a second plug-in mating portion on the outer casing 1, the electric auxiliary bracket 71 can be first installed in the outer casing 1 by plugging in, and then fixed by screw connection. This reduces the number of screws used, requiring only a small number of screws to fix the electric auxiliary bracket 71 to the outer casing 1 for assembly. In later maintenance, maintenance personnel only need to remove a small number of screws to remove the electric heating component 7 from the outer casing 1, thereby reducing the difficulty of disassembly and assembly and improving maintenance convenience.

[0106] In one embodiment of this application, the electric auxiliary support 71 may be provided with a first plug-in portion 711 and a first connecting portion 712, and the electric auxiliary support 71 may also be provided with a second plug-in portion 713 and a second connecting portion 714. One end of the electric heating component 72 may be provided with a first plug-in mating portion 721, and the other end of the electric heating component 72 may be provided with a first connecting mating portion 722.

[0107] The top plate of the outer casing 1 may be provided with a second insertion mating part (not shown) and a second connecting mating part (not shown). The first insertion part 711 and the first insertion mating part 721 can be inserted together, and the first connecting part 712 and the first connecting mating part 722 can be fixedly connected together by screws. The second insertion part 713 and the second insertion mating part can be inserted together, and the second connecting part 714 and the second connecting mating part can be fixedly connected together by screws.

[0108] By providing a first plug-in portion 711 on the electric auxiliary bracket 71, and correspondingly providing a first plug-in mating portion 721 on the electric heating component 72, one end of the electric heating component 72 can be installed on the electric auxiliary bracket 71 by plugging in, while the other end of the electric heating component 72 is fixedly installed by screw connection. In this way, the number of screws used can be reduced. Only a small number of screws are needed to fix the electric heating component 72 and the electric auxiliary bracket 71 together to complete the assembly. In the later maintenance process, after the maintenance personnel remove the screws on the corresponding end of the electric heating component 72, the electric heating component 72 can be pushed or pulled to detach from the electric auxiliary bracket 71, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance. Similarly, the electric auxiliary bracket 71 is provided with a second plug-in part 713, and correspondingly, a second plug-in mating part is provided on the outer casing 1. The electric auxiliary bracket 71 can be first installed in the outer casing by plugging in, and then fixed by screw connection. In this way, the number of screws used can be reduced. Only a small number of screws are needed to fix the electric auxiliary bracket 71 to the outer casing 1 to complete the assembly. In the later maintenance process, the maintenance personnel only need to remove a small number of screws to remove the electric heating component 7 from the outer casing 1, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0109] In one embodiment of this application, the electric heating component 72 may include a first end 723, a second end 724, and an electric heating element 725. The electric heating element 725 may be disposed between the first end 723 and the second end 724. The first end 723 may be provided with a first insertion mating portion 721, and the second end 724 may be provided with a first connecting mating portion 722.

[0110] Specifically, for the electric heating component 72, the electric heating element 725 can be connected to a power supply cable, so that the electric heating element 725 can generate heat when energized. A first end 723 and a second end 724 are respectively installed at both ends of the electric heating element 725. The first end 723 and the second end 724 can be made of insulating material and can be used to mount the electric heating element 725 on the electric auxiliary support 71.

[0111] The first end 723 may be provided with a first insertion mating part 721 to be inserted together with the electric auxiliary bracket 71, and the second end 724 may be fixedly connected to the electric auxiliary bracket 71 by screws.

[0112] The physical manifestations of the aforementioned plug-in portion and plug-in mating portion can have various structural forms. For example, the plug-in portion can be a slot, and the plug-in mating portion can be a tongue; or, the plug-in portion can be a tongue, and the plug-in mating portion can be a slot. No further limitations or elaborations are made here. The physical manifestations of the connecting portion and connecting mating portion can be hole structures. For example, the connecting portion can be a threaded hole, and the connecting mating portion can be a through hole; or, the connecting portion can be a through hole, and the connecting mating portion can be a threaded hole.

[0113] The electric heating element 72 can be designed as a split unit. The ends of the electric heating element 725 are respectively provided with a first end 723 and a second end 724. The first end 723 can be provided with a first insertion mating part 721 to meet the requirements of insertion connection with the electric auxiliary bracket 71, and the second end 724 can be provided with a first connecting mating part 722 to be fixedly installed on the electric auxiliary bracket 71 by screws.

[0114] In one embodiment of this application, the first connecting portion 712 and the first connecting mating portion 722 may be arranged adjacent to the indoor air outlet 11, while the first plug-in portion 711 and the first plug-in mating portion 721 may be arranged away from the indoor air outlet 11.

[0115] Specifically, after the electric heating component 7 is assembled into the housing 1, to facilitate the disassembly and maintenance of the electric heating component 72, the first connecting part 712 and the first connecting mating part 722 are positioned near the indoor air outlet 11. Thus, when the electric heating component 72 needs to be disassembled and maintained, the operator does not need to open the housing 1; they only need to insert tools through the indoor air outlet 11 into the housing 1 and remove the screws on the first connecting part 712 and the first connecting mating part 722. Then, the electric heating component 72 can be pulled so that it can be tilted and removed or pulled out of the indoor air outlet 11.

[0116] When the electric heating component 72 is repaired and reassembled, it can be tilted and inserted into the indoor air outlet 11, so that the first plug-in mating part 721 is inserted into the first plug-in part 711. Then, the first connecting part 712 and the first connecting mating part 722 are fixedly connected together by screws. Thus, the disassembly and assembly of the electric heating component 72 can be completed without opening the outer casing 1, which is more conducive to improving the convenience of maintenance.

[0117] By arranging the first connecting part 712 and the first connecting mating part 722 close to the indoor air outlet 11, during maintenance and disassembly, maintenance personnel can insert a screwdriver into the housing 1 through the indoor air outlet 11 to remove the screws on the first connecting part 712 and the first connecting mating part 722. Then, the electric heating component 72 can be tilted so that it can be directly removed from the indoor air outlet 11. Similarly, during maintenance and installation, the electric heating component 72 can be tilted into the housing 1 through the indoor air outlet 11 and inserted into the electric auxiliary bracket 71, and then fixed with screws, thereby more effectively improving the convenience of maintenance.

[0118] In one embodiment of this application, as shown in Figures 4, 11, and 12, the indoor unit of the air conditioner may further include an electrical control box 4. The electrical control box 4 may be disposed in the outer casing 1. An electrical controller 41 may be disposed inside the electrical control box 4. During the process of controlling the operation of the electrical components in the indoor unit of the air conditioner, the electrical controller 41 will generate heat, therefore, heat dissipation treatment is required for the electrical controller 41 inside the electrical control box 4.

[0119] Therefore, as shown in Figure 13, the electrical control box 4 may be provided with an air inlet 42 and an air outlet 43. A heat dissipation duct can be formed inside the electrical control box 4 between the air inlet 42 and the air outlet 43. The electrical control box 4 can be disposed within the outer casing 1 and located in the exhaust duct. Specifically, by placing the electrical control box 4 within the exhaust duct inside the outer casing 1, during the operation of the indoor unit of the air conditioner, the indoor return air vent 12 can draw in indoor air and discharge it to the outside of the outer casing 1 through the exhaust duct.

[0120] As the airflow passes through the exhaust duct and then passes the electrical control box 4, some of the airflow enters the electrical control box 4 through the air inlet 42. The temperature of the air drawn in by the indoor return air vent 12 is generally no higher than 30 degrees Celsius. Therefore, the airflow drawn into the exhaust duct through the indoor return air vent 12 can enter the electrical control box 4 to dissipate heat from the electrical controller 41. After the airflow enters the electrical control box 4 and exchanges heat with the electrical controller 41, the heat-exchanged airflow exits the electrical control box 4 through the exhaust vent 43 and flows back into the exhaust duct, eventually being discharged to the outside of the outer casing 1.

[0121] By providing an air inlet 42 and an air outlet 43 on the electrical control box 4, and placing the electrical control box 4 within the exhaust duct, the airflow input from the indoor return air vent 12 can flow within the exhaust duct during the operation of the indoor air conditioning unit. Part of the airflow can enter the electrical control box 4 through the air inlet 42. The airflow entering the electrical control box 4 can exchange heat with the heating electrical components of the controller 41, thereby effectively removing heat from the electrical control box 4 and expelling it through the exhaust outlet 43. This allows for circulating airflow within the electrical control box 4 for heat dissipation, ensuring good heat dissipation for the controller 41. Simultaneously, the exterior of the electrical control box 4 can also be cooled by airflow, improving the heat dissipation efficiency of the electrical control box and enhancing the reliability of equipment operation.

[0122] In another embodiment of this application, the electrical control box 4 may be provided with an air inlet 42 and an air outlet 43. A heat dissipation airflow channel may be formed between the air inlet 42 and the air outlet 43 inside the electrical control box 4. The electrical control box 4 may be disposed within the outer casing 1.

[0123] The air inlet 42 can be located near the indoor return air inlet 12, and the exhaust vent 43 can be located near the exhaust heat exchange channel 21.

[0124] Specifically, for the electrical control box 4, the air inlet 42 is positioned close to the indoor return air vent 12. This allows some of the airflow drawn in from the indoor return air vent 12 to enter the electrical control box 4 through the air inlet 42, thus providing heat dissipation for the electrical controller 41. After heat exchange with the controller 41 inside the electrical control box 4, the heat-exchanged airflow exits through the exhaust vent 43 and flows back into the exhaust duct, eventually exiting to the outside of the outer casing 1.

[0125] By providing air inlet 42 and exhaust 43 on the electrical control box 4, with air inlet 42 located near the indoor return air vent, the airflow from the indoor return air vent 12 can enter the electrical control box 4 through air inlet 42. The airflow entering the electrical control box 4 can exchange heat with the heating electrical components of the controller 41, thereby effectively removing heat from the electrical control box 4. The heat-exchanged airflow is discharged from the exhaust vent 43 to the outside of the electrical control box 4 and enters the exhaust heat exchange channel 21 of the total heat exchange core 2. In this way, there is a circulating airflow in the electrical control box 4 for heat dissipation, so that the controller 41 can obtain good heat dissipation. At the same time, the outside of the electrical control box 4 can also be cooled by airflow, thereby improving the heat dissipation efficiency of the electrical control box and improving the reliability of equipment operation.

[0126] The airflow flowing into the outer casing 1 from the indoor return air vent 12 is partially directed into the total heat exchange core 2, while the remaining airflow flows into the electrical control box 4 through the air inlet 42 and exits from the electrical control box 4 through the exhaust vent 43, flowing back into the total heat exchange core 2. In this application, a portion of the airflow flowing into the outer casing 1 through the indoor return air vent 12 can flow into the electrical control box 4 to directly exchange heat with the electrical controller 41 for heat dissipation. Simultaneously, airflow also flows outside the electrical control box 4 to dissipate heat from the electrical controller 41. This allows for heat dissipation both inside and outside the electrical control box 4 through airflow, improving heat dissipation efficiency.

[0127] In one embodiment, as shown in Figures 5 and 6, a second partition plate 15 is further provided in the housing 1. One end of the second partition plate 15 can be connected to the total heat exchange core 2, and the second partition plate 15 separates the two fan assemblies 3.

[0128] As shown in Figure 5, a first partition plate 16 may also be provided in the outer casing 1. One end of the first partition plate 16 may be connected to the total heat exchange core 2, and the first partition plate 16 may separate the indoor air outlet 11 and the indoor air return outlet 12.

[0129] The total heat exchange core 2 can separate the outdoor air outlet 13 and the outdoor air inlet 14. Specifically, the two fan assemblies 3 can be arranged on the same side of the housing 1. In this way, the two fan assemblies 3 can be quickly assembled in the same direction during the assembly process. Furthermore, the two fan assemblies 3 are separated by a second partition plate 15 so that the two fan assemblies 3 do not interfere with each other during operation.

[0130] By further providing a first partition plate 16 in the outer casing 1, the first partition plate 16 can isolate the inlet 211 of the exhaust heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22 of the total heat exchange core 2 from each other, so as to meet the installation requirements of the total heat exchange core 2, as shown in Figure 16.

[0131] In this design, the corners of the total heat exchange core 2, specifically the corners facing the indoor side, are connected to the first partition plate 16, thereby spatially separating the inlet 211 of the exhaust heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22 of the total heat exchange core 2. The corners facing the fan assembly 3 are connected to the second partition plate 15. The other two corners of the total heat exchange core 2 can be connected to the corresponding sidewalls of the outer casing 1 using conventional installation methods to ultimately isolate the exhaust and fresh air channels from each other.

[0132] In one embodiment, the second partition plate 16 may be provided with a connecting port and a second damper 161. The connecting port may also be referred to as the third ventilation port 163 as described in the above embodiment. The connecting port may be provided with the second damper 161. The connecting port may be configured to connect the indoor air outlet 11 and the indoor return air outlet 12. The second damper 161 may be configured to open or close the connecting port. The indoor air conditioning unit according to this application may also include a controller. The controller may be configured to control the second damper 161 to open or close the connecting port, for example, according to a received instruction.

[0133] Specifically, in order to enable the indoor return air vent 12 and indoor air outlet 11 to be interconnected when the exhaust air duct and fresh air duct are in internal circulation, a second damper 161 can be directly added between the inlet 211 of the exhaust air heat exchange channel and the outlet 222 of the fresh air heat exchange channel of the total heat exchange core 2.

[0134] With the second damper 161 closed, the indoor return air vent 12 and the indoor air outlet vent 11 are isolated, thus isolating the exhaust duct and the fresh air duct to meet the requirement of independent indoor and outdoor air intake and exhaust. At this time, the dampers of the outdoor air inlet vent 14 and the outdoor air outlet vent 13 can be in the open state.

[0135] When internal circulation is required, the second damper 161 can be opened. The second damper 161 connects the indoor return air vent 12 and the indoor air outlet 11 at the total heat exchange core 2. At this time, the dampers of the outdoor air inlet 14 and the outdoor air outlet 13 are in the closed state.

[0136] In one embodiment, the air inlet 42 may be provided on the end face of the electrical control box 4 opposite to the indoor return air vent 12, and the exhaust vent 43 may be provided on the side wall of the electrical control box 4 opposite to the first partition plate 16.

[0137] During internal circulation, some of the airflow flowing into the outer casing 1 from the indoor return air inlet 12 flows directly into the connecting port, while the remaining airflow flows into the electrical control box 4 through the air inlet 42 and is discharged from the exhaust port 43 and flows into the connecting port.

[0138] Specifically, in order to meet the heat dissipation requirements inside the control box 4 during the internal circulation process of the indoor unit of the air conditioner, an exhaust hole 43 is provided on the side wall of the control box 4 facing the first partition plate 16. The heat-exchanged gas discharged from the control box 4 can enter the other side of the first partition plate 16 through the connecting port or the third ventilation port 163 and be discharged from the indoor air outlet 11.

[0139] By providing an air inlet 42 at the end of the electrical control box 4, which is arranged opposite to the indoor return air inlet 12, a portion of the airflow flowing from the indoor return air inlet 12 into the outer casing 1 can enter the electrical control box 4 to dissipate heat from the electronic components inside the electrical control box 4. As for the airflow output from the electrical control box 4, since the exhaust vent 43 is located on the side wall of the electrical control box 4 and faces the first partition plate 16, the airflow output from the electrical control box 4 can flow directly to the first partition plate 16 and through the connecting port to the indoor air outlet 11, thus achieving effective heat dissipation of the electrical control box 14 by the indoor unit during internal air circulation; or the airflow output from the electrical control box 4 can, for example, flow directly to the outdoor air outlet 13 through the exhaust heat exchange channel 21, thus achieving effective heat dissipation of the electrical control box 14 by the indoor unit during fresh air exchange. In this way, this application can ensure that the heat dissipation requirements of the electrical control box 4 are met by the indoor unit during both fresh air exchange and internal air circulation, thereby improving reliability.

[0140] In one embodiment of this application, the air inlet 42 may be arranged away from the air outlet 43.

[0141] Specifically, by arranging the air inlet 42 away from the exhaust vent 43, the air intake and exhaust of the electrical control box 4 can be effectively isolated to avoid mutual interference between the airflow of the air inlet 42 and the exhaust vent 43, thereby improving heat dissipation efficiency.

[0142] In one embodiment of this application, the air inlet 42 and the air outlet 43 may be arranged at the bottom of the electrical control box 4.

[0143] Specifically, by arranging the air inlet 42 at the bottom of the electrical control box 4, the airflow entering the electrical control box 4 through the air inlet 42 can exchange heat with the electrical controller 41 and become hot air. During the flow of hot air, it will rise and flow to the top area of ​​the electrical control box 4. The exhaust vent 43 is located at the bottom of the electrical control box 4, so that the hot air will rise and flow to the area above the exhaust vent 43, and then flow downward again to be discharged. This allows for more comprehensive and effective heat dissipation of the electrical components in different parts of the electrical controller 41 in the electrical control box 4.

[0144] In one embodiment of this application, as shown in FIG13, a first fireproof plate 44 may also be provided on the electrical control box 4. The first fireproof plate 44 can cover the outside of the air inlet 42. An air intake gap can be formed between the first fireproof plate 44 and the electrical control box 4. Specifically, during the operation of the electrical controller 41 in the electrical control box 4, an electric spark may be generated due to a malfunction. The electric spark can be transmitted to the outside of the electrical control box 4 through the air inlet 42. In order to prevent the electric spark from damaging the external components of the electrical control box 4, the first fireproof plate 44 can be used to cover the outside of the air inlet 42.

[0145] During use, when an electric spark is output from the air inlet 42, the electric spark can be blocked by the first fireproof plate 44 on the outside of the air inlet 42, thereby preventing the electric spark from spreading out arbitrarily and improving the safety and reliability of use.

[0146] By installing a first fireproof plate 44 on the electrical control box 4, the first protective plate 44 can shield the outside of the air inlet 42. In this way, when the electrical control box 4 generates electric sparks due to circuit faults, the electric sparks spraying out from the air inlet 42 will be blocked by the first fireproof plate 44, which can prevent the electric sparks from damaging or even igniting the components outside the electrical control box 4, thereby improving the safety and reliability of use.

[0147] In one embodiment of this application, a second fireproof plate 45 may also be provided on the electrical control box 4. The second fireproof plate 45 can cover the outside of the exhaust hole 43, and an exhaust gap can be formed between the second fireproof plate 45 and the electrical control box 4. Specifically, during operation, the electrical controller 41 in the electrical control box 4 may generate electric sparks due to a malfunction. These electric sparks can be transmitted to the outside of the electrical control box 4 through the exhaust hole 43. In order to prevent the electric sparks from damaging the external components of the electrical control box 4, a second fireproof plate 45 can be provided to cover the outside of the exhaust hole 43.

[0148] During use, when an electric spark is output from the air inlet 42, the electric spark can be blocked by the second fireproof plate 45 on the outside of the exhaust vent 43, so as to prevent the electric spark from spreading out arbitrarily, thereby improving the safety and reliability of use.

[0149] By installing a second fireproof plate 45 on the electrical control box 4, the second fireproof plate 45 can shield the outside of the exhaust hole 43. In this way, when the electrical control box 4 generates electric sparks due to circuit failure, the electric sparks spraying out from the exhaust hole 43 will be blocked by the second fireproof plate 45, so as to avoid the electric sparks damaging or even causing fire to the components outside the electrical control box 4, thereby improving the safety and reliability of use.

[0150] In one embodiment of this application, as shown in FIG13, the electrical control box 4 may further be provided with a wiring terminal 46. The wiring terminal 46 may be exposed on the outside of the electrical control box 4. The wiring terminal 46 may be electrically connected to the electrical controller 41.

[0151] Specifically, since the control box 4 is built into the outer casing 1, a terminal block 46 can be provided on the control box 4 to facilitate electrical connection between the control box 4 and external electrical components. The terminal block 46 can protrude from the outside of the control box 4, and the terminal block 46 is pre-connected to the controller 41. External electrical components can be connected to the terminal block 46 via cables to improve the convenience of circuit connection.

[0152] By providing wiring terminals 46 on the electrical control box 4, when the electrical components in the housing 1 are connected to the electrical controller 41 in the electrical control box 4, the electrical connection can be quickly completed by plugging into the wiring terminals 46 outside the electrical control box 4, thereby improving assembly efficiency.

[0153] In one embodiment of this application, in order to improve the ease of disassembly and assembly of the fan assembly 3, the fan assembly 3 can be installed by an assembly unit.

[0154] As shown in Figures 6 and 8, the top plate of the outer casing 1 may be provided with two sets of assembly units. Each set of assembly units may include a support portion 101 and a fixing portion 102. The mounting bracket 31 may be provided with a support mating portion 313 and a fixing mating portion 314. The support mating portion 313 can be screwlessly assembled onto the support portion 101. The fixing mating portion 314 is fixedly connected to the fixing portion 102 by screws.

[0155] Specifically, the fan 32 can be fixedly mounted on the top plate of the housing 1 via the mounting bracket 31. The top plate of the housing 1 may be provided with a support portion 101 and a fixing portion 102. Correspondingly, the mounting bracket 31 is provided with a support mating portion 313 and a fixing mating portion 314. The support portion 101 and the support mating portion 313 cooperate to achieve screwless assembly, and the fixing portion 102 and the fixing mating portion 314 cooperate to be installed using screws.

[0156] Thus, in the actual assembly process, the mounting bracket 31 is first installed by fitting the bearing fitting part 313 with the bearing part 101, and then the fixing fitting part 314 is fixedly installed on the fixing part 102 by screws.

[0157] Similarly, during later maintenance, the screws between the fixing part 102 and the fixing mating part 314 can be removed first, and then the bearing mating part 313 can be separated from the bearing part 101, so that the fan assembly 3 can be removed from the housing 1.

[0158] By providing two sets of assembly units on the outer casing 1, the bearing part 101 in the assembly unit can be connected to the bearing mating part 313 on the mounting bracket 31 without screws, while the fixing part 102 in the assembly unit can be connected to the fixing mating part 314 on the mounting bracket 31 with screws. In this way, during the actual assembly process, the bearing mating part 313 and the bearing part 101 can reduce the number of screws used. Only a small number of screws are needed to fix the fan assembly 3 to the outer casing 1 to complete the assembly. Similarly, during the later maintenance process, the operator only needs to remove a small number of screws to remove the fan assembly 3 from the outer casing 1, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0159] In one embodiment, the bearing mating part 313 is slidably mounted on the bearing part 101. Specifically, the bearing mating part 313 and the bearing part 101 can be mated by a sliding connection, and the specific mating structure can be a conventional sliding installation structure such as a slide rail and a slide groove. In this way, during the assembly process, the bearing mating part 313 can be slidably assembled onto the bearing part 101, and then the fixing part 102 and the fixing mating part 314 can be tightened and fixed by screws.

[0160] In some embodiments, the physical manifestation of the fixing part 102 can be a screw hole, and the physical manifestation of the fixing mating part 314 can be a fixing hole, which will not be elaborated or limited here.

[0161] In one embodiment, the supporting mating part 313 can overlap the supporting part 101. Specifically, the mating method between the supporting mating part 313 and the supporting part 101 can be an overlapping method. Specifically, the supporting mating part 313 can be an overlapping plate extending out of the mounting bracket 31, and the supporting part 101 can be a hanging plate formed on the top plate of the outer shell 1, and the overlapping plate can overlap the hanging plate.

[0162] In one embodiment, the supporting mating part 313 can be inserted into the supporting part 101. Specifically, the mating method between the supporting mating part 313 and the supporting part 101 can be a plug-in method. Specifically, the supporting mating part 313 can be a plug-in plate extending out of the mounting bracket 31, and the supporting part 101 can be a slot formed on the top plate of the outer casing 1, into which the plug-in plate can be inserted.

[0163] In one embodiment, to achieve a compact design, the two fan assemblies 3 can be arranged side-by-side on one side of the housing 1. A second partition plate 15 can be provided between the two fan assemblies 3. Assembly units are respectively provided on both sides of the second partition plate 15. The second partition plate 15 can be disposed between the side wall of the housing 1 and the total heat exchange core 2. Specifically, the two fan assemblies 3 can be arranged on the same side of the housing 1, which facilitates rapid assembly of the two fan assemblies 3 in the same direction during assembly. Furthermore, the two fan assemblies 3 are separated by the second partition plate 15 so that the two fan assemblies 3 do not interfere with each other during operation.

[0164] By arranging the two fan assemblies 3 on the same side of the housing 1 and separating them by the second partition plate 15, the internal component layout of the housing 1 is made more compact, thus achieving a compact structural design. At the same time, the second partition plate 15 separates the two fan assemblies 3, thereby achieving mutual isolation between the fresh air duct and the exhaust air duct, ensuring good heat exchange between the incoming and outgoing air of the housing 1 and that the air paths do not affect each other, ensuring that indoor exhaust air and outdoor intake air are independent of each other.

[0165] In one embodiment, the two fan assemblies 3 may be arranged side by side between the indoor air outlet 11 and the outdoor air outlet 13. The outlet of one of the two fans 32 may be connected to the outdoor air outlet 13, and the outlet of the other of the two fans 32 may be connected to the indoor air outlet 11.

[0166] Specifically, the two fan assemblies 3 can be arranged on the same side of the housing 1 and located between the indoor air outlet 11 and the outdoor air outlet 13. In this way, the fan assembly 3 adjacent to the indoor air outlet 11 can be used to drive airflow in the fresh air duct, and the fan assembly 3 adjacent to the outdoor air outlet 13 can be used to drive airflow in the exhaust air duct.

[0167] By arranging the fan assembly 3 between the indoor air outlet 11 and the outdoor air outlet 13, the air to be output to the outside can be efficiently exhausted to the outside through the outdoor air outlet 13 under the action of the corresponding fan 32. Similarly, the air to be output to the inside can be efficiently delivered to the inside under the action of the corresponding fan 32, thereby increasing the indoor air volume, reducing the air resistance of the fan 32, and improving the air delivery efficiency.

[0168] In one embodiment, the heat exchanger 5 may be disposed between the indoor air outlet 11 and the corresponding outlet of the fan 32.

[0169] Specifically, the heat exchanger 5 can be installed between the indoor air outlet 11 and the corresponding fan 32, so that the airflow output by the fan 32 can be directly blown towards the heat exchanger 5.

[0170] By placing the heat exchanger 5 between the indoor air outlet 11 and the outlet of the fan 32, the airflow output from the outlet of the fan 32 can be directly blown onto the heat exchanger 5, thereby improving the heat exchange efficiency between the airflow and the heat exchanger 5, and thus improving the heat exchange efficiency of the indoor unit of the air conditioner.

[0171] In one embodiment, a partition plate 65 may be provided in the outer casing 1. A first vent 651 may be provided on the partition plate 65. The partition plate 65 may be located inside the outer casing 1, inside the indoor air outlet 11. The partition plate 65 can separate the indoor air outlet 11 and the indoor return air outlet 12. The indoor air outlet 11 can be connected to the outlet of the corresponding fan 32 through the first vent 651. The heat exchanger 5 may be located between the first vent 651 and the indoor air outlet 11.

[0172] Specifically, the partition plate 65 provided in the outer casing 1 can form a space for installing the heat exchanger 5 around the indoor air outlet 11, so as to facilitate the installation of the heat exchanger 5 at the indoor air outlet 11 and ensure that the airflow flowing from the fresh air duct can effectively exchange heat with the heat exchanger 5.

[0173] By setting a partition plate 65 in the outer casing 1 to separate the indoor air outlet 11 and the indoor air return outlet 12, the partition plate 65 and the area around the indoor air outlet 11 can form a space for installing the heat exchanger 5, so that the airflow generated by the corresponding fan 32 is blown to the heat exchanger 5 through the first vent 651 for heat exchange and then output from the indoor air outlet 11, so as to ensure that the airflow output from the indoor air outlet 11 has received sufficient heat exchange, thereby improving the heat exchange efficiency.

[0174] In one embodiment, a first spacer 16 may also be provided in the outer casing 1. The first spacer 16 may be disposed between the partition plate 65 and the total heat exchange core 2.

[0175] Specifically, by further providing a first partition plate 16 in the outer casing 1, the first partition plate 16 can isolate the inlet 211 of the exhaust heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22 of the total heat exchange core 2 from each other, so as to meet the installation requirements of the total heat exchange core 2.

[0176] Of the four corners of the total heat exchange core 2, the corner facing the indoor side is connected to the first partition plate 16, thereby spatially isolating the inlet 211 of the exhaust heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22 of the total heat exchange core 2. The corner facing the fan assembly 3 is connected to the second partition plate 15. The other two corners of the total heat exchange core 2 can be connected to the corresponding sidewalls of the outer casing 1 using conventional installation methods to ultimately isolate the exhaust channel and the fresh air channel from each other.

[0177] As shown in Figures 5, 8, and 9, this application also provides an indoor air conditioning unit that can improve the air delivery efficiency of the fan assembly. The indoor air conditioning unit may include a housing 1. The housing 1 may be provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14. A fresh air channel can be formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel can be formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0178] The indoor unit of the air conditioner may also include a total heat exchange core 2. The total heat exchange core 2 may be disposed in the outer casing 1. The total heat exchange core 2 may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0179] The indoor unit of the air conditioner may also include a heat exchanger 5. The heat exchanger 5 may be configured to exchange heat with the airflow passing through the fresh air duct.

[0180] The indoor unit of the air conditioner may also include two fan assemblies 3. Each fan assembly 3 may include a mounting bracket 31 and a fan 32. The fan 32 may be mounted on the mounting bracket 31. One of the two fan assemblies 3 may be located in the fresh air duct, and the other of the two fan assemblies 3 may be located in the exhaust air duct.

[0181] The mounting bracket 31 may form a gap with the top plate of the outer casing 1. The fan 32 may be equipped with a centrifugal fan. As shown in Figure 8, the mounting bracket 31 may also be provided with a ventilation notch 311. The ventilation notch 311 may be configured to allow airflow to flow between the top and bottom of the mounting bracket 31.

[0182] Specifically, for the fan assembly 3, the fan 32 can be a centrifugal fan and is fixedly mounted on the top of the housing 1 by the mounting bracket 31. There is a gap between the mounting bracket 31 and the top plate of the housing 1, so that during the operation of the fan 32, the airflow entering and exiting the total heat exchange core 2 can flow to the upper and lower surfaces of the mounting bracket 31 respectively.

[0183] A ventilation notch 311 is provided on the mounting bracket 31. The ventilation notch 311 connects the upper and lower spaces of the mounting bracket 31. Thus, during the operation of the fan 32, when the air intake volume of the two sides of the fan 32 is significantly different, the air in the upper and lower layers of the mounting bracket 31 can flow alternately to automatically balance the air intake volume of the two sides of the centrifugal fan.

[0184] By providing ventilation gaps 311 on the mounting bracket 31, the upper and lower sides of the mounting bracket 31 can be connected to each other through the ventilation gaps 311. In this way, during the operation of the fan 32, the airflow distribution on both sides of the mounting bracket 31 can be balanced, so that the air intake on both sides of the fan 32 is more uniform, thereby improving the air delivery efficiency of the fan 32.

[0185] In one embodiment, the ventilation opening 311 may be arranged outside the fan 32 and away from the total heat exchange core 2.

[0186] Specifically, the ventilation opening 311 can be arranged close to the side wall of the housing 1, and in order to meet the requirements of the mounting bracket 31 supporting the installation of the fan 32, the ventilation opening 311 is also arranged on the outside of the fan 32.

[0187] Since the ventilation opening 311 is close to the side wall of the housing 1 and far away from the total heat exchange core 2, it can reduce the area of ​​poor ventilation that is generated near the side wall of the housing 1.

[0188] By providing a ventilation notch 311 on the outer side of the mounting bracket 31 outside the fan 32, a larger space can be provided between the ventilation notch 311 and the side wall of the outer casing 1 to meet the vertical ventilation requirements of the mounting bracket 31. At the same time, the ventilation notch 311 can be located away from the total heat exchange core 2, thus ensuring that sufficient negative pressure is formed at the total heat exchange core 2 to accelerate the airflow speed in the total heat exchange core 2.

[0189] In one embodiment, the mounting bracket 31 may be provided with a clearance notch 312, as shown in Figures 8 and 9. The clearance notch 312 may be arranged adjacent to the total heat exchange core 2. The corresponding corner of the total heat exchange core 2 may be sandwiched between the two fans 32.

[0190] Specifically, in order to achieve the requirement of compact installation of internal components of the housing 1, a clearance notch 312 is provided on the mounting bracket 31. The design of the clearance notch 312 allows the total heat exchange core 2 to be placed closer to the fan 32, thereby achieving a compact structural design within the housing 1.

[0191] By providing a clearance notch 312 on the mounting bracket 31, the corner of the total heat exchange core 2 will be inserted into the area between the two fans 32 and connected to the second partition plate 15, so that the total heat exchange core 2 can be arranged closer to the fans 32, thereby making the component distribution in the housing 1 more compact, which is more conducive to the design requirements of overall structural compactness and reducing the overall volume of the housing 1.

[0192] Meanwhile, since the total heat exchange core 2 can be as close as possible to the inlet of the fan 32, it is more conducive to increasing the negative pressure at the total heat exchange core 2, so as to accelerate the flow speed of the air in the total heat exchange core 2.

[0193] In one embodiment of this application, as shown in Figures 4 to 7, this application also provides an air conditioner indoor unit, which can improve the assembly efficiency of the insulation structure installed inside the outer casing 1.

[0194] The indoor unit of the air conditioner may include a housing 1. The housing 1 may be provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14. A fresh air channel may be formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel may be formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0195] The indoor unit of the air conditioner may include a total heat exchange core 2, which may be disposed in the outer casing 1. The total heat exchange core 2 may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0196] The indoor unit of the air conditioner may also include a heat exchanger 5, which may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct.

[0197] The indoor unit of the air conditioner may include two fan assemblies 3. Each fan assembly 3 may include a mounting bracket 31 and a fan 32. The fan 32 may be mounted on the mounting bracket 31. One of the two fan assemblies 3 may be located in the fresh air duct, and the other of the two fan assemblies 3 may be located in the exhaust air duct.

[0198] As shown in Figures 5 and 7, the indoor unit of the air conditioner may also include an insulation frame 6. The insulation frame 6 may be provided with a first connection port 61, a second connection port 62, a third connection port 63, and a fourth connection port 64.

[0199] The insulation frame 6 can be disposed within the outer casing 1 and abut against the inner wall of the outer casing 1. The first connection port 61 can be connected to the indoor air outlet 11. The second connection port 62 can be connected to the indoor return air outlet 12. The third connection port 63 can be connected to the outdoor air inlet 14. The fourth connection port 64 can be connected to the outdoor air outlet 13.

[0200] Specifically, when the side wall of the outer shell 1 needs to be insulated, the integrated insulation frame 6 can be placed into the outer shell 1. The four sides of the insulation frame 6 can be attached to the corresponding inner side wall of the outer shell 1, so that the insulation of the four sides of the outer shell 1 can be achieved simply by placing the entire insulation frame 6 into the outer shell 1.

[0201] By adding an insulation frame 6 to the outer shell 1, the side walls of the outer shell 1 can be integrally insulated using the insulation frame 6 to meet the requirements for thermal insulation. Furthermore, since the insulation frame 6 is a single, integral structure, gaps caused by assembly can be avoided, resulting in better insulation performance. In addition, relevant components in the outer shell 1 can be installed within the insulation frame 6 to improve assembly precision and consistency, thereby increasing assembly efficiency.

[0202] In one embodiment, a partition plate 65 may be provided in the thermal insulation frame 6. A first ventilation opening 651 may be provided on the partition plate 65. The partition plate 65 may be located inside the first connection port 61. The partition plate 65 can separate the first connection port 61 and the second connection port 62. The partition plate 65 can divide the thermal insulation frame 6 into a first installation area and a second installation area.

[0203] The heat exchanger 5 may be installed in the first installation area. The total heat exchange core 2 and the fan assembly 3 may be installed in the second installation area. The heat exchanger 5 may be arranged between the first vent 651 and the first connection port 61.

[0204] The outlet of one of the fans 32 can be connected to the fourth connection port 64, and the outlet of the other fan 32 is connected to the first installation area through the first ventilation port 651.

[0205] Specifically, the insulation frame 6 is built into the outer shell 1, so that the relevant components in the outer shell 1 are also surrounded by the insulation frame 6. In order to enable the installation of different components in different areas, partition plates 65 can also be set in the insulation frame 6.

[0206] The partition plate 65 and the insulation frame 6 are an integral structure. Under the action of the partition plate 65, the insulation frame 6 forms a first installation area and a second installation area that are separated. The first installation area is used to install the heat exchanger 5 so that the airflow entering the room can have good heat exchange with the heat exchanger 5, thereby improving the heat exchange efficiency.

[0207] By setting a partition plate 65 in the insulation frame 6, the insulation frame 6 is divided into two installation areas for installing relevant components in the outer shell 1 respectively, so as to improve the accuracy and consistency of assembly and improve the assembly efficiency.

[0208] In one embodiment, the second mounting area corresponds to the mounting of components such as the fan assembly 3, the total heat exchange core 2, and the electrical control box 4. Based on the description in the above embodiments of this application, a second partition plate 15 and a first partition plate 16 can be provided in the second mounting area.

[0209] Specifically, the two fan assemblies 3 can be arranged side-by-side on one side of the housing 1. A second partition plate 15 can also be provided in the housing 1. The second partition plate 15 can be located between the two fan assemblies 3. The inner wall of the insulation frame 6 can also be provided with a positioning groove 66, as shown in Figure 7. The end of the second partition plate 15 can be inserted into the positioning groove 66. The second partition plate 15 can be disposed between the positioning groove 66 and the total heat exchange core 2.

[0210] By providing a positioning groove 66, during the installation of the second spacer 15, the end of the second spacer 15 can be inserted into the positioning groove 66 to pre-assemble the second spacer 15 onto the housing 1, which can effectively reduce the amount of screws used when fixing the second spacer 15 and improve the assembly and disassembly efficiency.

[0211] In one embodiment, the second spacer 15 may be provided with a folded edge 151, and the outer casing 1 may be provided with a slot 103, as shown in FIG6. The end of the second spacer 15 may be inserted into the positioning groove 66, and the folded edge 151 may abut against the top plate of the outer casing 1 and be secured in the slot 103. The folded edge 151 may be fixedly connected to the top plate of the outer casing 1 by screws.

[0212] Specifically, for the second partition plate 15, in order to facilitate quick installation by the operator, the end of the second partition plate 15 can be inserted into the positioning groove 66, and the folded edge 151 can be inserted into the slot 103 provided on the top plate of the outer casing 1 at the same time. In this way, the positioning groove 66 and the slot 103 can cooperate to pre-position and assemble the second partition plate 15. Then, the folded edge 151 is fixed to the top plate of the outer casing 1 by a single screw.

[0213] By providing a slot 103 on the outer casing 1, during the installation of the second spacer 15, the folded edge 151 of the second spacer 15 will be engaged in the slot 103, thereby pre-assembling the second spacer 15 onto the outer casing 1. Then, the folded edge 151 is fixedly installed on the top plate of the outer casing 1 by a screw to achieve the fixed installation of the second spacer 15. In this way, the number of screws used during the fixed installation of the second spacer 15 can be effectively reduced, thereby improving the efficiency of disassembly and assembly.

[0214] In another embodiment, the first partition 16 can be disposed between the partition 65 and the total heat exchange core 2. Specifically, by providing the first partition 16 in the outer casing 1, the first partition 16 can be connected between the partition 65 and the total heat exchange core 2, thereby using the first partition 16 to isolate the exhaust duct and the fresh air duct at the total heat exchange core 2, to ensure that outdoor exhaust and indoor intake do not affect each other.

[0215] In one embodiment, to extend the service life of the total heat exchange core 2, the insulation frame 6 may be provided with two opposing first mounting portions 67, as shown in FIG. 7. A first filter screen 18 may be provided between the two first mounting portions 67, as shown in FIG. 6.

[0216] The first filter 18 can be disposed between the total heat exchange core 2 and the indoor return air vent 12.

[0217] Specifically, the first filter 18 can be installed and fixed through two first mounting parts 67 formed in the insulation frame 6. The first filter 18 can filter the air that is introduced into the outer casing 1 from the indoor return air vent 12, and then the filtered air enters the total heat exchange core 2.

[0218] The first mounting part 67 is a solid object, which can be used to assemble the first filter screen 18 into place by means of screw fixing or other methods, or it can be a structure such as a slot to meet the installation requirements of the first filter screen 18.

[0219] By setting the first filter 18, the indoor air can be effectively filtered after entering the outer casing 1, thus protecting the total heat exchange core 2 from dust and extending its service life. Furthermore, the first mounting part 67 on the insulation frame 6 allows for easy installation of the first filter 18, improving assembly convenience.

[0220] In one embodiment, as shown in Figures 6 and 7, the thermal insulation frame 6 may be provided with two oppositely arranged second mounting parts 68, and a second filter screen 19 may be provided between the two second mounting parts 68.

[0221] The second filter 19 can be disposed between the total heat exchange core 2 and the outdoor air inlet 14. Specifically, after outdoor air enters the outer casing 1, it is first filtered by the second filter 19 before flowing into the total heat exchange core 2. The second mounting part 68 can be used to assemble the second filter 19 into place by means of screw fixing or other methods, or it can be a slot or other structural form to meet the installation requirements of the second filter 19.

[0222] By providing a second filter 19, outdoor air can be effectively filtered before entering the outer casing 1, thus protecting the total heat exchange core 2 from dust and extending its service life. Furthermore, the second mounting portion 68 on the insulation frame 6 allows for easy installation of the second filter 19, improving assembly convenience.

[0223] In another embodiment, to improve the heat exchange efficiency between the heat exchanger 5 and the airflow, a first mounting plate 51 is provided between the first end of the heat exchanger 5 and the inner wall adjacent to the insulation frame 6, and a second mounting plate 52 may be provided between the second end of the heat exchanger 5 and the insulation frame 6, as shown in FIG5. The second mounting plate 52 may be inclined from the second end of the heat exchanger 5 toward the indoor air outlet 11 and may be connected between the indoor air outlet 11 and the indoor return air outlet 12.

[0224] Specifically, the heat exchanger 5 is fixedly installed in the first mounting area by mounting plates on both sides. The first mounting plate 51 and the second mounting plate 52 can provide good fixation and support for the heat exchanger 5 on both sides. In addition, the second mounting plate 52 can extend to the indoor air outlet 11. The inclined second mounting plate 52 can guide the airflow after heat exchange by the heat exchanger 5, so that the airflow can flow quickly to the indoor air outlet 11. By providing mounting plates at both ends of the heat exchanger 5, a relatively closed air outlet area can be formed between the heat exchanger 5 and the indoor air outlet 11. Furthermore, the second mounting plate 52 extends inclined towards the indoor air outlet 11, thereby guiding the airflow after heat exchange by the heat exchanger 5, so that the airflow after heat exchange can flow smoothly to the indoor air outlet 11.

[0225] In one embodiment, a water receiving tray (not shown) may also be provided in the outer casing 1. The water receiving tray may be located in the first mounting area and arranged below the heat exchanger 5. Specifically, the water receiving tray may be installed in the first mounting area. The water receiving tray and the top plate of the outer casing 1 form a relatively closed heat exchange cavity in the first mounting area, so that the airflow entering the heat exchange cavity can exchange heat well with the heat exchanger 5. At the same time, the water receiving tray can collect the defrost water of the heat exchanger 5. In addition, a drain pump 53 may also be provided in the outer casing 1, as shown in FIG5. The drain pump 53 may be arranged above the water receiving tray and between the second mounting plate 52 and the partition plate 65.

[0226] By setting a water collection tray at the bottom of the first installation area to meet the requirements for condensate collection on the evaporator, and arranging the drain pump 53 on the outside of the second installation plate 52, the airflow after heat exchange by the heat exchanger 5 is reduced from being blocked by the drain pump 53 on its way to the indoor air outlet 11, thus reducing the wind resistance at the indoor air outlet 11 and improving the air outlet efficiency.

[0227] In one embodiment of this application, as shown in Figures 4 to 7, an air conditioner indoor unit is also provided, which can achieve a compact overall structure design. The air conditioner indoor unit may include a housing 1. The housing 1 may be provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14. A fresh air channel can be formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel can be formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0228] The indoor unit of the air conditioner may also include a total heat exchange core 2. The total heat exchange core 2 may be disposed in the outer casing 1. The total heat exchange core 2 may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0229] The indoor unit of the air conditioner may also include a heat exchanger 5. The heat exchanger 5 may be configured to exchange heat with the airflow passing through the fresh air duct.

[0230] The indoor unit of the air conditioner may also include two fan assemblies 3. Each fan assembly 3 may include a mounting bracket 31 and a fan 32. The fan 32 may be mounted on the mounting bracket 31. One of the two fan assemblies 3 may be located in the fresh air duct, and the other of the two fan assemblies 3 may be located in the exhaust air duct.

[0231] The outer casing 1 may have a first mounting area and a second mounting area. The heat exchanger 5 may be disposed in the first mounting area, and the fan assembly 3 and the total heat exchange core 2 may be disposed in the second mounting area. The indoor air outlet 11 may communicate with the first mounting area, and the indoor return air outlet 12, the outdoor air outlet 13, and the outdoor air inlet 14 may communicate with the second mounting area. The first mounting area may extend to the indoor return air outlet 12 and partially cover the indoor return air outlet 12 inside the outer casing 1. In other words, the first mounting area may overlap with at least a portion of the indoor return air outlet 12.

[0232] Specifically, since the indoor unit of the air conditioner centrally houses the heat exchanger 5 and the total heat exchange core 2, the number of components inside the outer casing 1 is relatively large. Therefore, the distance between the indoor return air vent 12 and the indoor water outlet on the outer casing 1 needs to meet the connection requirements of the user's home piping, and thus the distance between them cannot be too small. In order to make the structure of the indoor unit of the air conditioner more compact, this application occupies part of the area of ​​the indoor return air vent 12 in the first installation area inside the outer casing 1 to meet the installation requirements of the relevant components.

[0233] Specifically, the first installation area can extend to the indoor return air vent 12 and partially cover the indoor return air vent 12 inside the outer casing 1. This allows for a further increase in the length of the first installation area, enabling the installation of components such as the heat exchanger 5 and the drain pump 53 within the first installation area. Furthermore, it ensures a compact structural design while further ensuring that the heat exchanger 5 has a sufficiently large heat exchange area.

[0234] By providing independent first and second installation areas within the outer casing 1, the compact design requirements of the internal structure of the outer casing 1 can be met. Simultaneously, the first installation area can accommodate the installation requirements of the heat exchanger 5 and also meet the heat exchanger 5's requirements for heat exchange area. Specifically, the first installation area can occupy part of the area where the indoor return air vent 12 is located, thus partially obstructing the indoor return air vent 12. This allows for full utilization of the area between the indoor return air vent 12 and the indoor air outlet vent 11, increasing the size of the first installation area to meet the installation requirements of the heat exchanger 5, which has a larger heat exchange area. This increases the heat exchange area of ​​the heat exchanger 5 and also meets the compact design requirements of the internal structure of the outer casing 1, thereby reducing the overall size of the air conditioner.

[0235] In one embodiment, based on the above embodiment, a first installation area and a second installation area can be separated in the insulation frame 6 by a partition plate 65.

[0236] The insulation frame 6 can partially block the indoor return air vent 12 from inside the outer shell 1.

[0237] Specifically, by adding an insulation frame 6 to the outer shell 1, on the one hand, the insulation frame 6 can provide integral insulation for the side walls of the outer shell 1, thereby meeting the requirements for thermal insulation. Since the insulation frame 6 is an integral structure, gaps caused by the assembly structure can be avoided, thus the insulation frame 6 according to this application can have better thermal insulation performance. On the other hand, the partition plate 65 in the insulation frame 6 divides the insulation frame 6 into two installation areas for installing relevant components in the outer shell 1 respectively, thereby improving the accuracy and consistency of assembly and further improving assembly efficiency.

[0238] In one embodiment, the ventilation area of ​​the second connection port 62 of the insulation frame 6 may be smaller than the ventilation area of ​​the indoor return air vent 12. In other words, the opening area of ​​the second connection port 62 of the insulation frame 6 may be smaller than the opening area of ​​the indoor return air vent 12.

[0239] The insulation frame 6, located inside the outer casing 1, can partially obscure the indoor return air vent 12. Specifically, by designing the ventilation area of ​​the second connection port 62 to be smaller than that of the indoor return air vent 12, the length of the first installation area can be extended inside the outer casing 1 via the insulation frame 6 to meet the installation requirements of the heat exchanger 5 and achieve a compact structural design. The ratio of the area of ​​the indoor return air vent 12 obscured by the insulation frame 6 to the total opening area of ​​the indoor return air vent 12 can be varied according to actual installation requirements. For example, it can be obtained through experiments based on different air supply requirements to meet the return air volume requirements of the indoor air conditioning unit; no restrictions are imposed here.

[0240] In another embodiment of this application, as shown in Figures 6 and 10, an indoor air conditioning unit is also provided, which can realize the separation of strong and weak current of related electrical components in the outer casing 1. The indoor air conditioning unit may include an outer casing 1, on which an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 may be provided. A fresh air channel can be formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel can be formed between the indoor return air outlet 12 and the outdoor air outlet 13. An air valve (not marked) may be provided on the outdoor air outlet 13 and the outdoor air inlet 14 respectively.

[0241] The indoor unit of the air conditioner may also include a total heat exchange core 2, which may be disposed in the outer casing 1. The total heat exchange core 2 may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0242] The indoor unit of the air conditioner may also include two fan assemblies 3. Each fan assembly 3 may include a mounting bracket 31 and a fan 32. The fan 32 may be mounted on the mounting bracket 31. One of the two fan assemblies 3 may be located in the fresh air duct, and the other of the two fan assemblies 3 may be located in the exhaust air duct. The indoor unit of the air conditioner may also include an electrical control box 4. The electrical control box 4 may contain an electrical controller. The electrical control box 4 may be located within the housing 1.

[0243] The outer casing 1 may include a first wiring section 171. The cable of the air valve can be routed through and extend along the first wiring section 171. The cable of the air valve can extend from the first end of the electrical control box 4 into the electrical control box 4 and be electrically connected to the electrical controller. The cable of the fan 32 can be arranged outside the first wiring section 171 and extend from the second end of the electrical control box 4 into the electrical control box 4 and be electrically connected to the electrical controller. The first end and the second end of the electrical control box 4 may be arranged facing away from each other.

[0244] Specifically, a first wiring section 171 may be provided in the outer casing 1. The first wiring section 171 can form a channel for the cable routing of the air supply valve. Under the action of the first wiring section 171, the cable of the air valve can be isolated from the cable on the fan 32.

[0245] Furthermore, the cables for the damper and the fan 32 can extend into the electrical control box 4 from different ends, thus more effectively separating high-voltage and low-voltage wires. This prevents the fan 32 cable from crossing with the damper cable during wiring in the housing 1, which would otherwise cause high-voltage and low-voltage wires to become mixed. Because the high-voltage and low-voltage cables are isolated from each other, especially with the damper cable receiving separate wiring protection via the first wiring section 171, safety during use is improved.

[0246] By providing an independent first wiring section 171 within the outer casing 1, the air valve cable, as a low-voltage cable, is routed separately through the first wiring section 171. The air valve cable enters the electrical control box 4 from its first end, while the fan 32 cable is routed outside the first wiring section 171 to isolate it from the air valve cable. Furthermore, the fan 32 cable can enter the electrical control box 4 from its second end, effectively separating high-voltage and low-voltage circuits and improving the safety and reliability of the indoor air conditioning unit.

[0247] In another embodiment of this application, the housing 1 may be provided with a first wiring section 171 and a second wiring section 172. The first wiring section 171 and the second wiring section 172 may be separated from each other by a certain distance. The cable of the air valve may be routed through the first wiring section 171 and extend into the electrical control box 4 to be electrically connected to the electrical controller, and the cable of the fan 32 may be routed through the second wiring section 172 and extend into the electrical control box 4 to be electrically connected to the electrical controller.

[0248] Specifically, to simultaneously guide and protect the cables of both the damper and the fan 32, a first wiring section 171 and a second wiring section 172 can be simultaneously provided in the housing 1. The first wiring section 171 and the second wiring section 172 are completely separated, with sufficient safety distance between them to avoid interference between high-voltage and low-voltage cables. By providing independent first wiring sections 171 and 172 in the housing 1, the damper cable can be routed through the first wiring section 171, which guides the damper cable into the electrical control box 4. Similarly, the fan 32 cable can be routed through the second wiring section 172, which guides the fan 32 cable into the electrical control box 4. This ensures that the damper cable and the fan 32 cable are separated, achieving separation of high-voltage and low-voltage wiring. This not only makes the cable routing within the housing 1 more organized but also avoids safety hazards caused by the crossing of high-voltage and low-voltage wiring, thereby improving the safety and reliability of the indoor air conditioning unit.

[0249] In one embodiment, the first wiring section 171 can be arranged between the total heat exchange core 2 and the top plate of the outer casing 1. Specifically, the first wiring section 171 can guide the extension wiring of the damper cable between the total heat exchange core 2 and the top plate of the outer casing 1. In this way, the space between the total heat exchange core 2 and the outer casing 1 can be fully utilized for wiring the damper cable. On the one hand, it allows the damper cable to be wired closer to the electrical control box 4; on the other hand, the total heat exchange core 2 can shield the damper cable to organize the wiring harness.

[0250] By placing the first wiring section 171 between the top plate of the heat exchange core 2 and the outer casing 1, the space between the heat exchange core 2 and the top plate of the outer casing 1 can be fully utilized for wiring, thereby eliminating the need for long-distance wiring along the side wall of the outer casing 1, which can effectively save the amount of cable used.

[0251] In one embodiment, the two fan assemblies 3 can be arranged side-by-side on one side of the housing 1. Specifically, by arranging the two fan assemblies 3 on the same side of the housing 1, the cables of the two fans 32 can be wired together. This simplifies the process of wiring the two fans 32 separately, thereby improving assembly efficiency. Furthermore, the two fans 32 can be arranged adjacent to each other, which facilitates the simultaneous wiring of the fan 32's cables and enables a neat and organized design of the power cable harness.

[0252] In one embodiment, the electrical control box 4 can be disposed in the exhaust duct. The electrical control box 4 can be located on one side of the total heat exchange core 2. Specifically, the electrical control box 4 can be disposed in the exhaust duct formed in the outer casing 1, so as to utilize the space of the exhaust duct to install the electrical control box 4. At the same time, since the electrical control box 4 is in the exhaust duct, the heat generated by the operation of the electrical controller in the electrical control box 4 can be carried away by the airflow in the exhaust duct, so as to achieve good heat dissipation of the electrical control box 4.

[0253] Furthermore, since the control box 4 is located on one side of the total heat exchange core 2, the cable of the damper can pass through the total heat exchange core 2 and enter the control box 4, thereby shortening the cable length. By placing the control box 4 on one side of the total heat exchange core 2 and in the exhaust duct, the airflow in the exhaust duct can be used to dissipate heat from the control box 4. Additionally, the cable can be routed directly from the top of the total heat exchange core 2 to the control box 4 on the side, further reducing the cable length.

[0254] In one embodiment, a wiring plate 17 may be provided in the outer casing 1, and the wiring plate 17 may be disposed between the total heat exchange core 2 and the top plate of the outer casing 1. A first wiring groove may be provided on the wiring plate 17. The cable of the air valve may be disposed in the first wiring groove, and the first wiring groove is a first wiring section 171.

[0255] Specifically, to facilitate the formation of the first wiring section 171 within the housing 1, a separate wiring plate 17 can be used to form the first wiring section 171. The wiring plate 17 can be provided with a first wiring groove for the air valve's wiring, which restricts and guides the air valve's cable routing. Simultaneously, the first wiring groove ensures that the air valve's cable is independent of the fan 32's cable, preventing cross-contact between the air valve's cable and the fan 32's cable. During the assembly of the housing 1, the wiring plate 17 can be placed against the top plate of the housing 1 and can be fixed to the top plate of the housing 1 with screws. The wiring plate 17 can be made of insulating material to improve cable wiring safety. By providing the wiring plate 17 between the total heat exchange core 2 and the top plate of the housing 1, and by providing the first wiring groove on the wiring plate 17 to meet the air valve's cable wiring requirements, the wiring function of the first wiring section 171 can be realized.

[0256] In one embodiment, a second wiring groove may be provided on the wiring plate 17, the second wiring groove being arranged at an interval from the first wiring groove, and at least one cable of the fan 32 may be arranged in the second wiring groove. Specifically, in order to meet the wiring requirements of the fan 32's cables through the wiring plate 17, a second wiring groove may be provided on the wiring plate 17, the second wiring groove being separated from the first wiring groove by a certain distance to achieve separation of strong and weak current. By providing a second wiring groove on the wiring plate 17 that is arranged at an interval from the first wiring groove, the second wiring groove can meet the wiring requirements of the fan 32's cables, thereby realizing the wiring function of the second wiring section 172.

[0257] In one embodiment, wire clips may be provided in the first wiring groove and the second wiring groove, respectively. Specifically, after the cables in the first wiring groove and the second wiring groove are in place, the wire clips can be used to limit the cables inside the wiring groove from the outside of the groove, thereby preventing the cables from coming out of the wiring groove. By providing wire clips in the first and second wiring grooves, the wire clips can restrict the cables within the wiring groove, preventing the cables from coming out of the groove, thus improving the reliability of the wiring.

[0258] In one embodiment, when an insulation frame 6 is provided in the outer casing 1, a wiring trough 69 may also be provided on the insulation frame 6 in the second mounting area, as shown in Figure 9. The wiring trough 69 may be arranged between the total heat exchange core 2 and the electrical control box 4. The cable of the air valve may also be arranged in the wiring trough 69. Specifically, after the air valve cable passes between the total heat exchange core 2 and the top plate of the outer casing 1, it may be further guided to extend into the electrical control box 4 through the wiring trough 69 formed on the insulation frame 6.

[0259] By additionally providing a wiring trough 69 on the insulation frame 6, the wiring trough 69 can cooperate with the first wiring part 171 to route the cable of the air valve, thereby making full use of the structure of the insulation frame 6 itself to further meet the wiring requirements of the air valve cable and improve the wiring quality of the cable.

[0260] In one embodiment of this application, as shown in Figures 4 to 6, an air conditioning indoor unit is also provided. This air conditioning indoor unit can simplify the structure inside the outer casing 1 to reduce assembly and manufacturing costs while meeting the requirements of internal circulation airflow. The air conditioning indoor unit provided in this application may include an outer casing 1. The outer casing 1 may be provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14.

[0261] The indoor unit of the air conditioner may include a total heat exchange core 2. The total heat exchange core 2 may be provided with an exhaust heat exchange channel 21 and a fresh air heat exchange channel 22. The exhaust heat exchange channel 21 and the fresh air heat exchange channel 22 may have an interleaved flow channel structure. Due to the interleaved flow channel structure, the airflow in the exhaust heat exchange channel 21 and the airflow in the fresh air heat exchange channel 22 can exchange heat with each other. An exhaust channel can be formed between the indoor return air vent 12, the exhaust heat exchange channel 21, and the outdoor air outlet vent 13 within the outer casing 1. A fresh air channel can be formed between the outdoor air inlet vent 14, the fresh air heat exchange channel 22, and the indoor air outlet vent 11 within the outer casing 1.

[0262] The indoor unit of the air conditioner may also include a heat exchanger 5, which may be configured to perform heat exchange treatment on the airflow flowing through the fresh air duct.

[0263] The indoor unit of the air conditioner may also include two fan assemblies 3, each of which may include a mounting bracket 31 and a fan 32. The fan 32 may be mounted on the mounting bracket 31. One of the two fan assemblies 3 may be located in the fresh air duct, and the other of the two fan assemblies 3 may be located in the exhaust air duct.

[0264] A second damper 161 may be provided between the total heat exchange core 2 and the outer shell 1. The second damper 161 may be arranged between the inlet 211 of the exhaust heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22. The second damper 161 may be configured to selectively connect the indoor air outlet 11 and the indoor return air outlet 12.

[0265] Specifically, in order to enable the indoor return air vent 12 and indoor air outlet 11 to be interconnected when the exhaust air duct and fresh air duct are in internal circulation treatment, a second damper 161 can be directly added between the inlet 211 of the exhaust air heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22 of the total heat exchange core 2.

[0266] With the second damper 161 closed, the indoor return air vent 12 and the indoor air outlet vent 11 can be isolated from each other. In this way, the exhaust duct and the fresh air duct can be isolated from each other to meet the requirements of independent indoor and outdoor air intake and exhaust. At this time, the dampers of the outdoor air inlet vent 14 and the outdoor air outlet vent 13 can be in the open state.

[0267] When internal circulation is required, the second damper 161 can be opened, which connects the indoor return air vent 12 and the indoor air outlet vent 11 at the total heat exchange core 2. At this time, the dampers of the outdoor air inlet vent 14 and the outdoor air outlet vent 13 can be closed.

[0268] By installing a second damper 161 between the inlet 211 of the exhaust heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22 in the total heat exchange core 2, the second damper 161 can be used to control the interconnection between the indoor return air vent 12 and the indoor air outlet 11. This allows for rapid temperature adjustment when the indoor temperature has not reached the set value; opening the second damper 161 enables the indoor return air vent 12 to connect with the indoor air outlet 11, thereby improving the user experience. Furthermore, since the second damper 161 is installed in the total heat exchange core 2 and separates the inlet 211 of the exhaust heat exchange channel 21 and the outlet 222 of the fresh air heat exchange channel 22, there is no need to add an additional internal circulation duct, thus reducing the number of components used and lowering assembly and manufacturing costs.

[0269] In one embodiment, a second partition plate 15 may be provided on the outlet side of the fresh air heat exchange channel 22 of the total heat exchange core 2. A first partition plate 16 may be provided on the other side of the outlet of the fresh air heat exchange channel of the total heat exchange core 2. The second partition plate 15 and the first partition plate 16 may be configured to separate the exhaust channel and the fresh air channel. The second partition plate 15 may be arranged between the indoor air outlet 11 and the outdoor air outlet 13, and the first partition plate 16 may be arranged between the indoor return air outlet 12 and the indoor air outlet 11.

[0270] The first partition plate 16 may be provided with a communication port, and the second damper 161 may be disposed in the communication port. The communication port mentioned here may also be referred to as the third ventilation port 163 as described in the above embodiment.

[0271] Specifically, the second partition 15 and the first partition 16 can meet the installation requirements of installing the total heat exchange core 2 in the outer casing 1 and isolating the exhaust duct and the fresh air duct from each other. The second damper 161 is installed in the connecting port on the first partition 16, which facilitates the installation of the second damper 161 in the outer casing 1. By setting the second partition 15 and the first partition 16, the exhaust duct and the fresh air duct can be separated at the outlet of the fresh air heat exchange channel 22 by the total heat exchange core 2. In addition, the connecting port on the first partition 16 can allow the exhaust duct and the fresh air duct to be interconnected so that the indoor return air vent 12 can be connected to the indoor air outlet vent 11 to achieve internal circulation. Installing the second damper 161 at the connecting port can control the start and stop of internal circulation and also facilitates the installation and fixation of the second damper 161.

[0272] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An indoor unit for an air conditioner, comprising: The outer casing is provided with an indoor air outlet, an indoor air return outlet, an outdoor air outlet, and an outdoor air inlet. A heat exchange chamber is also provided in the outer casing, and the indoor air outlet is connected to the heat exchange chamber. The total heat exchange core is provided with an exhaust heat exchange channel and a fresh air heat exchange channel, which form an interlaced channel structure. The total heat exchange core is disposed in the outer shell, and a fresh air channel is formed between the outdoor air inlet, the fresh air heat exchange channel, the heat exchange cavity and the indoor air outlet, and an exhaust channel is formed between the indoor return air outlet, the exhaust heat exchange channel and the outdoor air outlet. A heat exchanger disposed in the heat exchange chamber and configured to perform heat exchange treatment on the airflow entering the heat exchange chamber. as well as Two fan assemblies, one of which is disposed in the fresh air duct and the other of which is disposed in the exhaust air duct; The heat exchange cavity is configured to be connected to or not connected to the exhaust heat exchange channel, and when connected to the exhaust heat exchange channel, a portion of the airflow after heat exchange by the heat exchanger is transported to the exhaust heat exchange channel.

2. An indoor unit for an air conditioner, comprising: The outer casing is provided with an indoor air outlet, an indoor air return outlet, an outdoor air outlet, and an outdoor air inlet. A heat exchange chamber is also provided in the outer casing, and the indoor air outlet is connected to the heat exchange chamber. The total heat exchange core is provided with an exhaust heat exchange channel and a fresh air heat exchange channel, which form an interlaced channel structure. The total heat exchange core is disposed in the outer shell, and a fresh air channel is formed between the outdoor air inlet, the fresh air heat exchange channel, the heat exchange cavity and the indoor air outlet, and an exhaust channel is formed between the indoor return air outlet, the exhaust heat exchange channel and the outdoor air outlet. A heat exchanger disposed in the heat exchange chamber and configured to perform heat exchange treatment on the airflow entering the heat exchange chamber. as well as Two fan assemblies, one of which is disposed in the fresh air duct and the other of which is disposed in the exhaust air duct; The indoor unit of the air conditioner is configured to: In the first dehumidification mode, the airflow input via the outdoor air inlet sequentially passes through the fresh air heat exchange channel and the heat exchanger and is output from the indoor air outlet; and / or The indoor unit of the air conditioner is configured in the second dehumidification mode, where the airflow input through the outdoor air inlet passes through the fresh air heat exchange channel and the heat exchanger in sequence, and a portion of the heat-exchanged airflow is output from the indoor air outlet, while the remaining portion of the heat-exchanged airflow is transported to the exhaust heat exchange channel.

3. The indoor unit of the air conditioner according to claim 1 or 2, wherein, A partition plate is provided in the outer shell, the partition plate surrounds the inner side of the indoor air outlet, and the partition plate and the outer shell form the heat exchange cavity; The partition plate is provided with a first ventilation opening and a second ventilation opening; The first vent is located on the windward side of the heat exchanger and is configured to deliver airflow toward the windward side of the heat exchanger; The second vent is located on the leeward side of the heat exchanger and is configured to deliver the airflow after heat exchange through the heat exchanger to the exhaust heat exchange channel.

4. The indoor unit of the air conditioner according to claim 3, wherein, A first damper is provided at the second ventilation opening, and the first damper is configured to open or close the second ventilation opening.

5. The indoor unit of the air conditioner according to claim 3 or 4, wherein, The outer casing is further provided with a first partition plate, which is connected between the total heat exchange core and the partition plate; One end of the first partition separates the exhaust heat exchange channel and the fresh air heat exchange channel from each other, and the other end of the first partition separates the first vent and the second vent from each other.

6. The indoor unit of the air conditioner according to claim 5, wherein, A third ventilation opening is provided on the first partition plate, and the third ventilation opening is connected to the fresh air channel and the exhaust air channel; The third ventilation opening is also provided with a second damper, which is configured to open or close the third ventilation opening.

7. The indoor unit of the air conditioner according to any one of claims 4 to 6, wherein, The outer casing is also provided with an air path switching component, which is configured to connect the exhaust heat exchange channel and the heat exchange cavity when the first damper opens the second vent.

8. The indoor unit of the air conditioner according to claim 6, wherein, The outer casing is also provided with an airflow switching component, which is disposed between the total heat exchange core and the partition plate; The airflow switching component is also configured to connect the fresh air duct and the exhaust air duct when the second damper is configured to open the third vent.

9. The indoor unit of an air conditioner according to any one of claims 1 to 8, wherein, The fresh air heat exchange channel of the total heat exchange core is arranged at an angle, and the fresh air heat exchange channel is also configured to condense and dehumidify the flowing air; and / or, The bottom of the total heat exchange core is also provided with a condensate collection tray, which is configured to collect condensate flowing out of the fresh air heat exchange channel.

10. The indoor unit of an air conditioner according to any one of claims 1 to 9, wherein, The outer casing is also provided with an electric heating component; the electric heating component is arranged close to the indoor air outlet, and the electric heating component is spaced apart from the heat exchanger. The electric heating component is configured to heat the airflow and cause the heated airflow to be output from the indoor air outlet.

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