Air conditioner indoor unit

Abstract

The present application discloses an air conditioner indoor unit, comprising: a housing, a total heat exchange core, two fan assemblies, an air inlet valve, and a control assembly. The housing is provided with an indoor air outlet, an indoor air return port, an outdoor air outlet, and an outdoor air inlet. The total heat exchange core is arranged in the housing. The air inlet valve is arranged at the outdoor air inlet. The control assembly comprises a first temperature detection component and a control component. The first temperature detection component is configured to detect an exhaust air temperature value at the outdoor air outlet. The control component is configured to increase the opening degree of a damper and decrease the opening degree of the air inlet valve on the basis of the exhaust air temperature value detected by the first temperature detection component, until the exhaust air temperature value detected by the first temperature detection component is not less than a set exhaust air temperature value.

Description

air conditioner indoor unit

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application No. 2025100667282, filed on January 15, 2025; Chinese patent application No. 2025200981097, filed on January 15, 2025; and Chinese patent application No. 2025105712975, filed on April 30, 2025, the disclosures of which are incorporated herein by reference in their entirety. 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] In actual use of air conditioners, in winter, when the outdoor temperature is low, after the air conditioner with fresh air function turns on to exchange fresh air, as the usage time increases, the outdoor fresh air entering the heat exchange core is low in temperature, which can easily cause condensation inside the heat exchange core. The condensation generated in the heat exchange core can easily damage the electrical components inside the air conditioner. Summary of the Invention

[0005] According to various embodiments of this application, an air conditioning indoor unit is provided. The air conditioning indoor unit according to this application produces less condensation inside the heat exchange core. The air conditioning indoor unit according to this application has high reliability in use.

[0006] In some embodiments of this application, an indoor air conditioning unit is provided, 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; a total heat exchange core, wherein an exhaust heat exchange channel and a fresh air heat exchange channel are provided, the exhaust heat exchange channel and the fresh air heat exchange channel conducting heat to each other; an exhaust channel is formed in the housing between the indoor return air outlet, the exhaust heat exchange channel, and the outdoor air outlet, and a fresh air channel is formed in the housing between the outdoor air inlet, the fresh air heat exchange channel, and the indoor air outlet; two fan assemblies, one of the two fan assemblies being disposed in the fresh air channel, and the other of the two fan assemblies being disposed in the exhaust channel; a damper configured to selectively connect the indoor air outlet and the indoor return air outlet; an air inlet valve disposed in the outdoor air inlet, the air inlet valve being configured to adjust the opening degree of the outdoor air inlet; and a control component. The control component includes: a first temperature detection component configured to detect the exhaust temperature value at the outdoor air outlet; and a control component. The control component is configured to adjust the opening degree of the damper and / or the opening degree of the air inlet valve and / or the rotational speed of the fan assembly based on the exhaust temperature value detected by the first temperature detection component, until the exhaust temperature value detected by the first temperature detection component is not less than a set exhaust temperature value.

[0007] Other features and advantages of this application will become clearer after reading the detailed embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 is a schematic diagram of the structure of an indoor air conditioner unit according to some embodiments of this application;

[0010] Figure 2 is a second schematic diagram of the structure of an air conditioner indoor unit according to some embodiments of this application;

[0011] Figure 3 is a third structural schematic diagram of an air conditioner indoor unit according to some embodiments of this application;

[0012] Figure 4 is one of the partial structural schematic diagrams of the indoor unit of the air conditioner in Figure 1;

[0013] Figure 5 is a partial structural schematic diagram of the indoor unit of the air conditioner in Figure 1;

[0014] Figure 6 is a partial structural schematic diagram of the indoor unit of the air conditioner in Figure 1;

[0015] Figure 7 is a schematic diagram of the thermal insulation frame in Figure 4;

[0016] Figure 8 is one of the structural schematic diagrams of the fan assembly in Figure 4;

[0017] Figure 9 is the second structural schematic diagram of the fan assembly in Figure 4;

[0018] Figure 10 is a schematic diagram of the threading plate in Figure 6;

[0019] Figure 11 is one of the structural schematic diagrams of the electrical control box in Figure 4;

[0020] Figure 12 is the second structural schematic diagram of the electrical control box in Figure 4;

[0021] Figure 13 is an exploded view of the electrical control box in Figure 4;

[0022] Figure 14 is a schematic diagram of the heating component in Figure 4;

[0023] Figure 15 is an exploded view of the heating component in Figure 4;

[0024] Figure 16 is a structural schematic diagram of an air conditioner indoor unit according to some embodiments of another embodiment of this application;

[0025] Figure 17 is a partial structural diagram of the indoor unit of the air conditioner in Figure 16;

[0026] Figure 18 is a partial structural schematic diagram of the indoor unit of the air conditioner in Figure 17;

[0027] Figure 19 is a magnified view of a portion of region A in Figure 18;

[0028] Figure 20 is a schematic diagram of the structure of the first filter screen in Figure 16;

[0029] Figure 21 is a magnified view of a portion of region B in Figure 20;

[0030] Figure 22 is a fourth structural schematic diagram of an air conditioner indoor unit according to some embodiments of this application;

[0031] Figure 23 is a control flowchart of an indoor air conditioning unit according to some embodiments of this application. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] 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 has two vents connecting to the indoor side and two vents connecting to the outdoor side. One fan is configured to draw in indoor air through the indoor vent, pass the air through the total heat exchange core for heat exchange, and then discharge it outdoors through the outdoor vent. The other fan is configured to draw in outdoor air through the outdoor vent, pass the air through the total heat exchange core for heat exchange, and then discharge it into the room through the indoor vent.

[0034] As shown in Figures 1 and 22, one embodiment of this application provides an indoor air conditioning unit, including: a housing 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 are provided. A fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0035] Specifically, the outer casing 1, serving as the mounting structure for the indoor unit of the air conditioner, is equipped 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. Typically, the indoor air outlet 11 and the indoor return air outlet 12 are formed on the first end face of the outer casing 1, while the outdoor air outlet 13 and the outdoor air inlet 14 are formed on the second end face of the outer casing 1, with the first and second end faces of the outer casing 1 facing away from each other.

[0036] The indoor unit of the air conditioner includes a total heat exchange core 2. The total heat exchange core 2 is disposed in the outer casing 1 and is configured to perform heat exchange between the airflow in the fresh air duct passing through it and the airflow in the exhaust air duct passing through it.

[0037] Specifically, the total heat exchange core 2 is 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 conduct heat to each other; an exhaust channel is formed in the outer shell 1 between the indoor return air vent 12, the exhaust heat exchange channel 21, and the outdoor air outlet 13. A fresh air channel is formed in the outer shell 1 between the outdoor air inlet 14, the fresh air heat exchange channel 22, and the indoor air outlet 11.

[0038] The indoor unit of the air conditioner includes two fan assemblies 3. One fan assembly 3 is disposed in the fresh air duct, and the other fan assembly 3 is disposed in the exhaust air duct. Specifically, the two fan assemblies 3 are used to meet the driving requirements of indoor and outdoor air flow. One fan assembly 3 is disposed in the fresh air duct to allow fresh outdoor air to enter the outer casing 1, exchange heat through the total heat exchange core 2, and then be output from the indoor air outlet 11. The other fan assembly 3 is disposed in the exhaust air duct to allow stale indoor air to enter the outer casing 1, exchange heat through the total heat exchange core 2, and then be output from the outdoor air outlet 13.

[0039] The indoor unit of the air conditioner includes a damper 161, which is configured to selectively connect the indoor air outlet 11 and the indoor return air outlet 12. Specifically, in order to achieve internal circulation processing and enable the indoor return air outlet 12 and the indoor air outlet 11 to communicate with each other, a damper 161 is provided between the indoor return air outlet 12 and the indoor air outlet 11.

[0040] When damper 161 is 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 14 and the outdoor air outlet 13 are open. When internal circulation is required, damper 161 can be opened, allowing the indoor return air vent 12 and the indoor air outlet vent 11 to connect at the total heat exchange core 2.

[0041] The indoor unit of the air conditioner may include a control component, which is used to control the operation of related electrical components in the indoor unit. Specifically, the control component includes a control unit 41, which can control the indoor unit to execute either a fresh air mode or an internal circulation mode during operation.

[0042] In fresh air mode, outdoor fresh air enters the fresh air heat exchange channel 22 of the total heat exchange core 2 through the outdoor air inlet 14. After heat exchange, the fresh air is delivered to the room through the indoor air outlet 11. At the same time, in fresh air mode, indoor return air enters the exhaust heat exchange channel 21 of the total heat exchange core 2 through the indoor return air outlet 12. After heat exchange with outdoor fresh air in the total heat exchange core 2, the return air is output to the outside through the outdoor air outlet 13.

[0043] In the internal circulation mode, the damper 161 is opened, and the indoor air outlet 11 is connected to the indoor return air outlet 12 through the damper 161. Under the action of the fan assembly 3 in the fresh air duct, the indoor return air is delivered to the indoor air outlet 11 through the damper 161 to achieve the internal circulation of indoor air.

[0044] In actual use, when the outdoor ambient temperature is low, the indoor unit of the air conditioner is in fresh air mode. Because the outdoor fresh air temperature is low, frost is easily formed inside the total heat exchange core 2 during the heat exchange process.

[0045] In this application, the control component may include a first temperature detection component 47. The first temperature detection component 47 is configured to detect the exhaust air temperature at the outdoor air outlet 13. Specifically, by detecting the temperature of the outdoor air outlet 13 using the first temperature detection component 47, it can be determined whether there is a possibility of frost formation inside the total heat exchange core 2. The control component 41 is configured to adjust the operation of the indoor air conditioning unit based on the exhaust air temperature detected by the first temperature detection component 47.

[0046] When the indoor unit of the air conditioner is in fresh air mode, the temperature of the outdoor air outlet 13 is detected by the first temperature detection component 47. If the detected temperature is lower than the set exhaust temperature value, it is determined that there is a possibility of frost forming on the total heat exchange core 2. At this time, the control component 41 adjusts the operating parameters of the indoor unit of the air conditioner to ensure that the exhaust temperature value is not lower than the set exhaust temperature value.

[0047] In one embodiment of this application, the indoor unit of the air conditioner further includes an air inlet valve 131. The air inlet valve 131 is disposed at the outdoor air inlet 14. The air inlet valve 131 is configured to adjust the opening degree of the outdoor air inlet 14. Specifically, the air inlet valve 131 can control its own opening size to adjust the opening degree of the outdoor air inlet 14, thereby adjusting the air intake volume of the outdoor air inlet 14.

[0048] When the indoor unit of the air conditioner is in fresh air mode, the temperature of the outdoor air outlet 13 is detected by the first temperature detection component 47. If the detected temperature is lower than the set exhaust temperature value, it is determined that there is a possibility of frost forming on the total heat exchange core 2. At this time, the opening degree of the damper 161 and the air inlet valve 131 can be adjusted by the control component 41.

[0049] Specifically, when the first temperature detection component 47 detects that the temperature of the outdoor air outlet 13 is lower than the set exhaust temperature value, the control component 41 controls the air inlet valve 131 to reduce its opening and opens the damper 161 and increases its opening. This reduces the amount of fresh air entering the total heat exchange core 2. At the same time, the opening of the damper 161 can meet the normal airflow requirements of the indoor air outlet 11, ensuring that the airflow of the indoor air outlet 11 remains stable.

[0050] In one embodiment, the control component 41 is further configured to: when the exhaust temperature value detected by the first temperature detection component 47 is less than the set exhaust temperature value, while reducing the opening of the air inlet valve 131 at the outdoor air inlet 14, adjust the speed of the fan assembly 3 in the fresh air duct to maintain a stable air volume in the fresh air duct.

[0051] Specifically, while adjusting the air inlet valve 131 and the damper 161, the speed of the fan assembly 3 in the fresh air duct can also be adjusted to meet the requirement of maintaining a stable air volume at the indoor air outlet 11. This allows the fan assembly 3 in the fresh air duct to adjust its speed to meet the requirement of maintaining a basic constant air volume at the indoor air outlet 11, thereby improving the user experience.

[0052] In one embodiment, the control component 41 is configured to: determine the estimated target speed of the fan assembly 3 in the fresh air duct based on a preset constant air volume performance curve; control the fan assembly 3 in the fresh air duct to operate at the estimated target speed, and determine whether the actual power at this time is equal to the constant air volume power; if not, adjust the estimated target speed until the actual power is equal to the constant air volume power; if yes, maintain the estimated target speed. The constant air volume power is determined based on the constant air volume performance curve.

[0053] In this application, the constant air volume performance curve is a common characteristic curve in the art, describing the relationship between rotational speed (N) and static pressure (Ps) when the fan / fan maintains a constant air volume (Q remains constant). This curve shows the required rotational speed of the fan to ensure a constant air volume when the static pressure changes. For a detailed description of the constant air volume performance curve, please refer to the relevant technologies in the art, which will not be repeated here. Specifically, when the opening of the inlet valve 131 decreases and the opening of the damper 161 increases, the fan assembly 3 in the fresh air duct, with a constant rotational speed, will cause an increase in the air supply volume, resulting in an increase in the power of the fan assembly 3 in the fresh air duct. At this time, the actual power of the fan assembly 3 does not match the constant air volume power corresponding to the air volume required by the indoor air outlet 11, so the fan assembly 3 in the fresh air duct needs to be adjusted.

[0054] At this time, by reducing the speed of the fan assembly 3 in the fresh air duct, the power of the fan assembly 3 in the fresh air duct is reduced, so that the actual power of the fan assembly 3 in the fresh air duct is the same as the constant air volume power determined by the preset constant air volume performance curve.

[0055] This ensures that the air volume of the indoor air outlet 11 remains constant during the adjustment process.

[0056] In one embodiment of this application, the control component 41 may further be configured to adjust the opening of the damper 161 and / or the rotation speed of the fan assembly 3 based on the exhaust temperature value detected by the first temperature detection component 47, until the exhaust temperature value detected by the first temperature detection component 47 is not less than the set exhaust temperature value. Specifically, when the indoor unit of the air conditioner is in fresh air mode, the temperature of the outdoor air outlet 13 is detected by the first temperature detection component 47, and when the detected temperature is lower than the set exhaust temperature value, it is determined that there is a possibility of frost formation on the total heat exchange core 2. At this time, the control component 41 can adjust the opening of the damper 161 and / or the rotation speed of the fan assembly 3.

[0057] The damper 161 can be opened to connect the indoor air outlet 11 with the indoor return air outlet 12. This allows the return air drawn in by the indoor return air outlet 12 to be delivered to the indoor air outlet 11 via the damper 161, thereby reducing the air intake of the outdoor air inlet 14. Furthermore, the fan speed of the fan assembly 3 in the fresh air duct is correspondingly reduced. This reduces the intake of outdoor fresh air while ensuring the constant airflow requirement of the indoor air outlet 11.

[0058] The fan assembly 3 in the exhaust duct also reduces its rotation speed accordingly. This reduces the amount of indoor return air discharged to the outside, ensuring that enough indoor return air is delivered to the indoor air outlet 11 to meet the constant air volume requirements of the indoor air outlet 11.

[0059] In one embodiment of this application, the control component 41 may also be configured to maintain the opening of the damper 161 and the wind speed of the two fan assemblies 3 unchanged when the exhaust temperature value detected by the first temperature detection component 47 is not less than the set exhaust temperature value.

[0060] The control component 41 can also be configured to increase the opening of the damper 161 and / or decrease the speed of the fan assembly 3 in the fresh air duct when the exhaust temperature value detected by the first temperature detection component 47 is less than the set exhaust temperature value, until the exhaust temperature value detected by the first temperature detection component 47 is not less than the set exhaust temperature value.

[0061] Specifically, when the indoor unit of the air conditioner is in fresh air mode, the temperature of the outdoor air outlet 13 is detected by the first temperature detection component 47. If the exhaust temperature detected by the first temperature detection component 47 is not lower than the set exhaust temperature value, the indoor unit of the air conditioner will maintain its current operating state and continue to operate normally. If the exhaust temperature detected by the first temperature detection component 47 is lower than the set exhaust temperature value, it is determined that there is a possibility of frost formation on the heat exchange core 2. At this time, the control component 41 controls the damper 161 to open. After the damper 161 opens, the indoor return air is delivered to the indoor air outlet 11 through the damper 161 to reduce the intake of outdoor fresh air. In this way, the condensation on the heat exchange core 2 due to the intake of too much outdoor fresh air can be reduced.

[0062] Similarly, the fan assembly 3 in the fresh air duct can be controlled by the control unit 41 to reduce its speed. By reducing the speed of the fan assembly 3 in the fresh air duct, the intake of outdoor fresh air can also be reduced. In this way, the condensation that occurs in the total heat exchange core 2 due to the intake of too much outdoor fresh air can be reduced.

[0063] In one embodiment of this application, the control component 41 may also be configured to reduce the rotation speed of the fan assembly 3 in the exhaust channel when the exhaust temperature value detected by the first temperature detection component 47 is less than the set exhaust temperature value, until the exhaust temperature value detected by the first temperature detection component 47 is not less than the set exhaust temperature value.

[0064] Specifically, in the above embodiments, in order to reduce condensation in the total heat exchange core 2, the intake of outdoor fresh air can be reduced by adjusting the speed of the air inlet valve 131, the damper 161 and the fan assembly 3 in the fresh air duct.

[0065] After the damper 161 is opened, in order to meet the constant air volume requirement of the indoor air outlet 11, the exhaust volume of the outdoor air outlet 13 needs to be reduced accordingly. Therefore, when the exhaust temperature value detected by the first temperature detection component 47 is lower than the set exhaust temperature value, the speed of the fan assembly 3 in the exhaust channel needs to be reduced simultaneously to reduce the amount of indoor return air discharged from the outdoor air outlet 13.

[0066] When there is a possibility of condensation in the total heat exchange core 2, the speed of the fan assembly 3 in the exhaust duct can be reduced to reduce the amount of air exhausted from the room to the outside. The return air in the room is delivered to the indoor air outlet 11 through the damper 161 to meet the air supply requirements of constant air volume in the room, which is more conducive to improving the user experience.

[0067] In some embodiments, the indoor unit of the air conditioner also includes an exhaust valve 141. The exhaust valve 141 is disposed at the outdoor air outlet 13. The exhaust valve 141 is configured to adjust the opening degree of the outdoor air outlet 13. The control component 41 may be configured to reduce the opening degree of the exhaust valve 141 when the exhaust temperature value detected by the first temperature detection component 47 is lower than the set exhaust temperature value.

[0068] Specifically, during the process of adjusting the exhaust volume of the outdoor air outlet 13, the opening of the outdoor air outlet 13 can also be adjusted by the exhaust valve 141 installed on the outdoor air outlet 13 to adjust the exhaust volume.

[0069] Specifically, when the exhaust temperature value detected by the first temperature detection component 47 is lower than the set exhaust temperature value, the control component 41 will control the exhaust valve to reduce the opening. In this way, the indoor return air can be further reduced from the outdoor air outlet 13 to reduce the impact on the air volume of the indoor air outlet 11.

[0070] In some embodiments of this application, the control component 41 may also be configured to maintain the opening of the damper 161 and the wind speed of the fan assembly 3 unchanged after adjusting the damper 161 and / or the fan assembly 3 according to the exhaust temperature value detected by the first temperature detection component 47; and after the indoor unit of the air conditioner has been running for a set period of time, adjust the damper 161 and / or the fan assembly 3 according to the exhaust temperature value detected by the first temperature detection component 47.

[0071] Specifically, after the exhaust temperature detected by the first temperature detection component 47 is lower than the set exhaust temperature, the control component 41 adjusts the relevant operating parameters of the air conditioner indoor unit. The air conditioner indoor unit will maintain the adjusted operating parameters for a period of time. Then, the control component 41 will again select whether to adjust the operating parameters of the air conditioner indoor unit based on the exhaust temperature detected by the first temperature detection component 47.

[0072] In this way, when the indoor unit of the air conditioner adjusts its operating parameters to reduce condensation in the total heat exchange core 2 due to the low exhaust temperature, it can avoid excessive fluctuations in air volume caused by the control component 41 frequently adjusting the operating parameters of the damper 161, fan assembly 3, air inlet valve 131, and exhaust valve 141 in the indoor unit of the air conditioner. This ensures that the air volume delivered from the indoor air outlet 11 remains relatively stable and constant, thereby improving the user experience.

[0073] In some embodiments, the control component further includes a second temperature detection component 48. The second temperature detection component 48 is configured to detect the intake air temperature at the outdoor air inlet 14. The control component 41 may also be configured to adjust a set duration for maintaining the current operating state of the indoor air conditioning unit based on the intake air temperature detected by the second temperature detection component 48. Specifically, the duration for which the indoor air conditioning unit maintains its current operating state after adjusting its operating parameters is related to the outdoor ambient temperature. Specifically, as the outdoor ambient temperature decreases, the duration for which the indoor air conditioning unit maintains its current operating state after adjusting its operating parameters is correspondingly shortened.

[0074] The air inlet temperature of the outdoor air inlet 14 is detected by the second temperature detection component 48. The adjustment frequency of the indoor unit of the air conditioner can be adjusted according to the outdoor ambient temperature. This can reduce the excessive fluctuation of air volume caused by frequent adjustment, and also adjust the adjustment frequency in a timely manner according to the outdoor environment to reduce the possibility of condensation inside the total heat exchange core 2.

[0075] In some embodiments, the control component 41 may further be configured to: when the intake air temperature detected by the second temperature detection component 48 is less than the first outdoor temperature value but greater than the second outdoor temperature value, the air conditioner indoor unit maintains its current operating state for a first preset duration value; when the intake air temperature detected by the second temperature detection component 48 is not greater than the second outdoor temperature value but greater than the third outdoor temperature value, the air conditioner indoor unit maintains its current operating state for a second preset duration value; and when the intake air temperature detected by the second temperature detection component 48 is not greater than the third outdoor temperature value, the air conditioner indoor unit maintains its current operating state for a third preset duration value. Wherein, the first preset duration value is greater than the second preset duration value, and the second preset duration value is greater than the third preset duration value.

[0076] Specifically, based on the outdoor ambient temperature, three different set duration values ​​can be set to control the cycle interval for maintaining the current operation of the indoor air conditioning unit. In this way, segmented control can be performed according to the ambient temperature to more accurately control the stable operation of the indoor air conditioning unit and reduce frequent fluctuations in the air volume of the indoor air outlet 11 caused by frequent adjustments.

[0077] The second temperature detection component 48 detects the air intake temperature of the outdoor air inlet 14. As the outdoor temperature decreases, the adjustment frequency of the indoor air conditioning unit can be increased. This ensures the amount of fresh air introduced while effectively reducing the possibility of condensation inside the total heat exchange core 2, thereby improving the user experience and operational reliability.

[0078] In this application, the specific temperature values ​​of the first, second, and third outdoor temperatures, as well as the specific durations of the first, second, and third set durations, can be adjusted according to the specific equipment specifications of the indoor air conditioning unit. No restrictions or elaborations are made here. Similarly, the specific exhaust temperature value is also adjusted according to the specific equipment specifications of the indoor air conditioning unit, and no restrictions or elaborations are made here.

[0079] Figure 23 illustrates the specific control process of an air conditioner indoor unit.

[0080] After the indoor unit of the air conditioner is powered on, the user presses the start button to execute step S101.

[0081] After the indoor unit of the air conditioner is started, step S102 is executed to set the mode. At this time, the indoor unit of the air conditioner will execute either the fresh air mode or the internal circulation mode according to the mode selected by the user.

[0082] After the indoor unit of the air conditioner selects the appropriate operating mode, step S103 is executed to set the air volume. At this time, the indoor unit of the air conditioner controls the operation of the fan assembly 3 according to the air volume selected by the user.

[0083] During operation, the indoor unit of the air conditioner executes step S104 to determine whether it is operating in fresh air mode. If not, it executes step S115 to maintain the current state of operation. If it is, it executes step S105.

[0084] If the indoor unit of the air conditioner executes step S105, it detects the exhaust temperature of the outdoor air outlet 13 through the first temperature detection component 47. Based on the detected exhaust temperature, the indoor unit executes step S106 to determine whether the exhaust temperature is lower than the set exhaust temperature value. If so, it executes step S115 to maintain the current operation. If not, it executes step S107.

[0085] The indoor unit of the air conditioner executes step S107 to adjust the operating parameters of the indoor unit. Referring to the description in the above embodiment, after the control component 41 detects that the exhaust temperature of the outdoor air outlet 13 is lower than the set exhaust temperature value according to the first temperature detection component 47, it will adjust the corresponding operating parameters of the air inlet valve 131, exhaust valve 141, damper 161, and / or fan assembly 3. The specific process will not be described in detail here.

[0086] After the indoor unit of the air conditioner completes the adjustment of the operating parameters, it executes step S108 to maintain the adjusted state of operation.

[0087] During the operation of step 108, the indoor unit of the air conditioner will control the running time of step 108 based on the outdoor air intake temperature detected by the second temperature detection component 48.

[0088] Specifically, step 109 is executed to determine whether the outdoor air intake is within the first temperature range. The first temperature range refers to the air intake temperature detected by the second temperature detection component 48 being lower than the first outdoor temperature value and higher than the second outdoor temperature value. If so, step S110 is executed, causing the indoor unit of the air conditioner to maintain its current operating state for a first set duration value. If not, step S111 is executed.

[0089] Step 111 is executed to determine whether the outdoor air intake is within the second temperature range. The second temperature range refers to the air intake temperature detected by the second temperature detection component 48 being no greater than the second outdoor temperature value and greater than the third outdoor temperature value. If it is, step S112 is executed, causing the indoor unit of the air conditioner to maintain its current operating state for a second set duration value. If not, step S113 is executed.

[0090] Step 113 is executed to determine whether the outdoor air intake is within the third temperature range. The third temperature range refers to the air intake temperature detected by the second temperature detection component 48 not being greater than the third outdoor temperature value. If so, step S114 is executed to keep the indoor unit of the air conditioner running in the current state for the third set duration value.

[0091] As shown in Figures 1 to 4, one embodiment of this application provides an indoor air conditioning unit, which further includes a heat exchanger 5. The heat exchanger 5 is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct. Specifically, the heat exchanger 5 can perform 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.

[0092] In one embodiment of this application, as shown in Figures 4, 14, and 15, an electric heating assembly 7 is further provided in the outer casing for heating the air after heat exchange treatment by the heat exchanger 5. In one embodiment, the electric heating assembly 7 includes an electric auxiliary support 71. The electric auxiliary support 71 is provided with a first insertion portion 711 and a first connecting portion 712. The electric heating assembly 7 may further include an electric heating component 72. One end of the electric heating component 72 is provided with a first insertion mating portion 721, and the other end of the electric heating component 72 is provided with a first connecting mating portion 722.

[0093] The first insertion part 711 is inserted into the first insertion mating part 721. The first connecting part 712 and the first connecting mating part 722 are fixedly connected together by screws. The electric auxiliary bracket 71 is disposed in the housing 1 and located between the heat exchanger 5 and the indoor air outlet 11.

[0094] Specifically, the electric heating assembly 7 uses an electric heating component 72 for heating. The electric heating component 72 generates heat after being energized to meet heating requirements. To ensure the electric heating assembly 7 is securely installed in the housing, the electric heating component 72 is fixedly installed inside the housing 1 via an auxiliary electric bracket 71. For ease of disassembly and maintenance of the electric heating component 72, during assembly, one end of the electric heating component 72 is inserted into the auxiliary electric bracket 71, while the other end is fixed to the auxiliary electric bracket 71 with screws, reducing the number of screws required. Therefore, during disassembly, only the screws at the corresponding ends of the electric heating component 72 need to be unscrewed, and the first insertion portion 721 of the electric heating component 72 can be directly pulled out from the first insertion portion 711 on the auxiliary electric bracket 71, further reducing the number of screws removed.

[0095] The electric auxiliary bracket 71 is provided with a first plug-in part 711, and the electric heating component 72 is provided with a first plug-in mating part 721. One end of the electric heating component 72 can be installed on the electric auxiliary bracket 71 by plugging in, and 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 fixing part and the fixed mating part together to complete the assembly. In the later maintenance process, the maintenance personnel can remove the screws on the corresponding end of the electric heating component 72 and pull the electric heating component 72 out of the electric auxiliary bracket 71, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0096] In another embodiment, the electric auxiliary support 71 may be provided with a second insertion portion 713 and a second connecting portion 714. The top plate 120 of the housing 1 is provided with a second insertion mating portion (not shown) and a second connecting mating portion (not shown). The second insertion portion 713 is inserted into the second insertion mating portion, and the second connecting portion 714 and the second connecting mating portion are fixedly connected together by screws.

[0097] Specifically, the electric heating assembly 7 uses an electric heating element 72 for heating. The electric heating element 72 generates heat after being energized to meet the heating requirements. In order to fix the electric heating assembly 7 in the housing, the electric heating element 72 is fixedly installed inside the housing by an electric auxiliary bracket 71.

[0098] To facilitate the disassembly and maintenance of the heating component 7, during assembly, the electric auxiliary bracket 71 is inserted into the second insertion mating part on the outer casing via the second insertion part 713. Then, the second connecting part 714 and the second connecting mating part are fixedly connected by screws. Since the electric auxiliary bracket 71 can be connected to the outer casing beforehand by insertion, the amount of screws used can be effectively reduced, thereby improving assembly efficiency.

[0099] Similarly, when disassembling and repairing the heating assembly 7, only a small number of screws need to be removed, and the second plug-in portion 713 of the electric auxiliary bracket 71 can be pulled directly from the second plug-in mating portion on the housing, thereby reducing the number of screws to be removed.

[0100] The electric auxiliary bracket 71 is provided with a second plug-in part 713, and correspondingly, the outer casing is provided with a second plug-in mating part. 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 fixing part and the fixing mating part together 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, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0101] In one embodiment of this application, the electric auxiliary support 71 is provided with a first plug-in portion 711 and a first connecting portion 712, and the electric auxiliary support 71 is also provided with a second plug-in portion 713 and a second connecting portion 714.

[0102] One end of the electric heating component 72 is provided with a first insertion mating part 721, and the other end of the electric heating component 72 is provided with a first connecting mating part 722. The top plate 120 of the outer casing 1 is provided with a second insertion mating part (not shown) and a second connecting mating part (not shown).

[0103] The first insertion portion 711 is inserted into the first insertion mating portion 721. The first connecting portion 712 and the first connecting mating portion 722 are fixedly connected together by screws. The second insertion portion 713 is inserted into the second insertion mating portion, and the second connecting portion 714 and the second connecting mating portion are fixedly connected together by screws.

[0104] The electric auxiliary bracket 71 is provided with a first plug-in part 711, and the electric heating component 72 is provided with a first plug-in mating part 721. One end of the electric heating component 72 can be installed on the electric auxiliary bracket 71 by plugging in, and 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 fixing part and the fixed mating part together to complete the assembly. In the later maintenance process, the maintenance personnel can remove the screws on the corresponding end of the electric heating component 72 and pull the electric heating component 72 out of 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, the outer casing is provided with a second plug-in mating part. 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 fixing part and the fixing mating part together 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, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0105] In one embodiment of this application, as shown in FIG15, the electric heating component 72 includes a first end 723, a second end 724, and an electric heating element 725. The electric heating element 725 is disposed between the first end 723 and the second end 724. The first end 723 is provided with a first insertion mating portion 721. The second end 724 is provided with a first connecting mating portion 722. The first end 723 is provided with the first insertion mating portion 721 to allow it to be inserted into the electric auxiliary bracket 71, while the second end 724 is fixedly connected to the electric auxiliary bracket 71 by screws.

[0106] Specifically, for the electric heating component, the electric heating element 725 can be connected to a power supply cable, thereby generating heat when the electric heating element 725 is energized. The electric heating element 725 has a first end 723 and a second end 724 installed at its two ends. The first end 723 and the second end 724 are supported by insulating material, thus allowing the electric heating element 725 to be mounted on the electric auxiliary support 71.

[0107] 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 restrictions 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.

[0108] The electric heating component 72 adopts a split design. The ends of the electric heating component 725 are respectively provided with a first end 723 and a second end 724. The first end 723 is provided with a first insertion mating part 721 to meet the requirements of insertion connection with the electric auxiliary bracket 71. The second end 724 is provided with a first connecting mating part 722 to meet the requirement of fixed installation on the electric auxiliary bracket 71 by screws.

[0109] In one embodiment of this application, the first connecting portion 712 and the first connecting mating portion 722 are arranged adjacent to the indoor air outlet 11, while the first plug-in portion 711 and the first plug-in mating portion 721 are arranged away from the indoor air outlet.

[0110] Specifically, after the heating component 7 is assembled into the housing, the first connecting part 712 and the first connecting mating part 722 are positioned near the indoor air outlet to facilitate disassembly and maintenance. This way, when the electric heating component 72 needs to be disassembled and maintained, the operator does not need to open the housing; they only need to insert tools through the indoor air outlet into the housing 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 pulled out of the indoor air outlet.

[0111] When reassembling after maintenance, the electric heating component 72 is inserted into the indoor air outlet at an angle, and 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 electric heating component 72 can be disassembled and assembled without opening the outer casing 1, which is more conducive to improving the convenience of maintenance.

[0112] By arranging the first connecting part 712 and the first connecting mating part 722 close to the indoor air outlet, during maintenance and disassembly, maintenance personnel can insert a screwdriver into the housing through the indoor air outlet 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. Similarly, during maintenance and installation, the electric heating component 72 is tilted into the housing 1 through the indoor air outlet and inserted into the auxiliary bracket, and then fixed with screws, thereby more effectively improving the convenience of maintenance.

[0113] 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. A control component 41 may be disposed inside the electrical control box 4. During the operation of the electrical components in the indoor unit of the air conditioner, the control component 41 will generate heat. Therefore, it is necessary to perform heat dissipation treatment on the control component 41 inside the electrical control box 4.

[0114] The physical entity representing the control component 41 can be the electronic controller in a conventional air conditioner, which will not be limited or elaborated here.

[0115] As shown in Figures 11 to 13, the electrical control box 4 may be provided with an air inlet 42 and an air outlet 43. A heat dissipation duct may be formed inside the electrical control box 4 between the air inlet 42 and the air outlet 43. The electrical control box 4 may be disposed within the outer casing 1 and located within the air outlet duct.

[0116] Specifically, by placing the electrical control box 4 inside the exhaust duct within the housing 1, during the operation of the indoor air conditioning unit, the indoor return air vent 12 can draw in indoor air and discharge it to the outside through the exhaust duct.

[0117] After the airflow in the exhaust duct reaches the flow channel electrical control box 4, part of the airflow can enter the electrical control box 4 through the air inlet 42. The temperature of the air drawn in by the indoor return air inlet 12 is generally not higher than 30 degrees Celsius. Therefore, the airflow drawn in through the indoor return air inlet 12 can enter the electrical control box 4 to dissipate heat from the control components 41 of the electrical control box 4.

[0118] After the airflow enters the electrical control box 4 and exchanges heat with the control component 41, the heat-exchanged airflow is discharged from the electrical control box 4 through the exhaust hole 43 and flows back into the exhaust channel and is finally discharged to the outside of the outer casing 1.

[0119] 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 during the operation of the indoor air conditioner unit can flow within the exhaust duct. 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 elements of the control component 41, thereby effectively removing heat from the electrical control box 4 and expelling it through the exhaust vent. This allows for circulating airflow within the electrical control box 4 for heat dissipation, ensuring good heat dissipation for the control component 41. Simultaneously, the exterior of the electrical control box 4 can also be cooled by airflow, improving the heat dissipation efficiency of the electrical box 4 and enhancing the reliability of equipment operation.

[0120] In another embodiment of this application, the electrical control box 4 is provided with an air inlet 42 and an air outlet 43. A heat dissipation air duct is formed between the air inlet 42 and the air outlet 43 inside the electrical control box 4, and the electrical control box 4 is disposed inside the outer casing 1.

[0121] 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.

[0122] Specifically, for the electrical control box 4, the air inlet 42 is arranged close to the indoor return air vent. This allows some of the airflow drawn in from the indoor return air vent to enter the electrical control box 4 through the air inlet 42, so as to dissipate heat from the control components 41 of the electrical control box 4 by allowing the airflow drawn in from the indoor return air vent 12 to enter the electrical control box 4.

[0123] After the airflow enters the electrical control box 4 and exchanges heat with the control component 41, the heat-exchanged airflow is discharged from the electrical control box 4 through the exhaust hole 43 and flows back into the exhaust channel and is finally discharged to the outside of the outer casing.

[0124] By providing air inlet 42 and air outlet 43 on the electrical control box 4, with air inlet 42 located near the indoor return air vent 12, the airflow flowing in 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 elements of the control component 41, thereby effectively removing heat from the electrical control box 4. The heat-exchanged airflow is discharged from the air outlet 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 control component 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 box and improving the reliability of equipment operation.

[0125] The airflow flowing from the indoor return air vent 12 into the outer casing 1, part of which flows directly into the total heat exchange core 2, and the remaining part flows into the electrical control box 4 through the air inlet 42 and is discharged from the exhaust vent 43 and flows into the total heat exchange core 2.

[0126] By allowing a portion of the airflow from the indoor return air vent 12 into the outer casing 1 to flow into the electrical control box 4 and directly exchange heat with the control component 41 for heat dissipation, while airflow also flows outside the electrical control box 4 for heat dissipation, heat dissipation can be achieved both inside and outside the electrical control box 4 through airflow, thus improving the heat dissipation efficiency of the electrical control box 4.

[0127] In one embodiment, as shown in Figures 4 and 5, a first partition plate 15 may also be provided in the housing 1, one end of which is connected to the total heat exchange core 2. The first partition plate 15 separates the two fan assemblies 3.

[0128] A second partition plate 16 may also be provided in the outer casing 1. One end of the second partition plate 16 is connected to the total heat exchange core 2. The second partition plate 16 separates the indoor air outlet 11 and the indoor return air outlet 12. The total heat exchange core 2 can separate the outdoor air outlet 13 and the outdoor air inlet 14.

[0129] Specifically, the two fan assemblies 3 are arranged on the same side of the housing 1. This facilitates rapid assembly of the two fan assemblies 3 in the same direction during the assembly process. Furthermore, the two fan assemblies 3 are separated by a first partition plate 15, ensuring that the two fan assemblies 3 do not interfere with each other during operation.

[0130] By further providing a second partition plate 16 in the outer casing 1, the second partition plate 16 isolates 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 22.

[0131] As shown in Figures 6 and 22, 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 first partition plate 15, thereby isolating the outlet 222 of the fresh air heat exchange channel 22 from the outlet 212 of the exhaust heat exchange channel 21. 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 achieve mutual isolation between the exhaust channel and the fresh air channel.

[0132] In one embodiment, a connecting port is provided on the second partition plate. A damper is provided in the connecting port. The connecting port is configured to connect the indoor air outlet 11 and the indoor return air outlet 12, and the damper is configured to open and close the connecting port.

[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 damper 161 is 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.

[0134] When damper 161 is closed, the indoor return air vent 12 and the indoor air outlet vent 11 are isolated. In this way, the exhaust duct and the fresh air duct are 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.

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

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

[0137] During internal circulation, part 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 second partition 16. The heat-exchanged gas discharged from the control box 4 can enter the other side of the second partition 16 through the damper 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, 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. For the airflow output from the electrical control box 4, the exhaust vent 43 is located on the side wall of the electrical control box 4 and faces the second gap 16. Thus, this application ensures that the air conditioner indoor unit meets the heat dissipation requirements of the electrical control box 4 during both fresh air exchange and internal circulation processes, thereby improving operational 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 separated to avoid mutual interference between the airflow from the air inlet 42 and the airflow from 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 control components 41 and become hot air. During the flow of hot air, as the hot air rises, it will flow to the top area of ​​the electrical control box 4, while the exhaust vent 43 is located at the bottom of the electrical control box 4. This allows the hot air to flow to the area above the exhaust vent 43 after rising, and then flow downwards again to be discharged. This allows for more comprehensive and effective heat dissipation of the heat-generating electrical components in different parts of the control components 41 in the electrical control box 4.

[0144] In one embodiment of this application, as shown in FIG11, a first fireproof plate 44 is further provided on the electrical control box 4. The first fireproof plate 44 covers the outside of the air inlet 42, and an air inlet gap is formed between the first fireproof plate 44 and the electrical control box 4.

[0145] Specifically, during operation, the control component 41 in the electrical control box 4 may generate electric sparks due to a malfunction. These sparks can travel to the outside of the electrical control box 4 through the air inlet 42. To prevent damage to external components of the electrical control box 4 from these sparks, a first fireproof plate 44 can be placed over the air inlet 42. During use, when electric sparks are emitted outward through the air inlet 42, they are blocked by the first fireproof plate 44, thus preventing the sparks from escaping and improving safety and reliability.

[0146] By providing a first fireproof plate 44 on the electrical control box 4, the first protective plate can shield the outside of the air inlet 42. In this way, when the electrical control box 4 generates an electric spark due to a circuit fault, the electric spark that is ejected from the air inlet 42 will be blocked by the first fireproof plate 44, so as to avoid the electric spark 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, the electrical control box 4 is further provided with a second fireproof plate 45, which covers the outside of the exhaust hole 43, and an exhaust gap is formed between the second fireproof plate 45 and the electrical control box 4.

[0148] Specifically, during operation, the control component 41 in the electrical control box 4 may generate electrical sparks due to a malfunction. These sparks can travel to the outside of the electrical control box 4 through the exhaust vent 43. To prevent these sparks from damaging external components of the electrical control box 4, a second fireproof plate 45 can be placed over the exhaust vent 43. During use, when electrical sparks are output from the air inlet vent 42, they are blocked by the second fireproof plate 45 outside the exhaust vent 43, thus preventing the sparks from escaping and improving safety and reliability.

[0149] By installing a second fireproof plate 45 on the electrical control box 4, the second protective plate can block the outside of the exhaust hole 43. In this way, when the electrical control box 4 generates electric sparks due to circuit faults, 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 igniting the components outside the electrical control box 4, thereby improving the safety and reliability of use.

[0150] In one embodiment of this application, the electrical control box 4 is further provided with a wiring terminal 46. The wiring terminal is exposed outside the electrical control box 4 and is electrically connected to the control component 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 extends to the outside of the control box 4. The terminal block 46 is pre-connected to the control component 41. External electrical components are 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, electrical components located outside the electrical control box 4 in the housing 1 can quickly complete electrical connection with the control components 41 in the electrical control box 4 by plugging them 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, an assembly unit may be provided to install the fan assembly 3.

[0154] As shown in Figures 6 and 8, two sets of assembly units are provided at the top plate 120 of the housing 1. Each set of assembly units may include a support portion 101 and a first fixing portion 102. The fan assembly 3 includes a mounting bracket 31 and a fan 32. The fan 32 is mounted on the mounting bracket 31. The mounting bracket 31 is provided with a support mating portion 313 and a fixing mating portion 314. The support mating portion 313 is screwlessly assembled onto the support portion 101, and the fixing mating portion 314 is fixedly connected to the first fixing portion 102 by screws.

[0155] Specifically, the fan 32 is fixedly mounted on the top plate 120 of the outer casing 1 via a mounting bracket 31. The top plate 120 of the outer casing 1 is provided with a support portion 101 and a first 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, while the first 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 engaging the bearing part 101 with the bearing part 313, and then the fixing part 314 is fixedly installed on the first fixing part 102 by screws.

[0157] Similarly, during later maintenance, the screws between the first 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 support portion 101 in each assembly unit can be connected to the support mating portion 313 on the corresponding mounting bracket 31 without screws, while the first fixing portion 102 in the assembly unit can be connected to the fixing mating portion 314 on the mounting bracket 31 using screws. Thus, during actual assembly, the operator can reduce the number of screws used by using the support mating portion 313 to engage with the support portion 101. Only a small number of screws are needed to fix the first fixing portion 102 and the fixing mating portion 314 together to complete the assembly. Similarly, during later maintenance, 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 maintenance convenience.

[0159] In one embodiment, the bearing mating part 313 is slidably mounted on the bearing part 101. Specifically, the bearing mating part 313 is slidably connected to the bearing part 101, and this sliding connection can be achieved using a conventional sliding installation structure such as a slide rail and a slide groove. Thus, during assembly, the bearing mating part 313 is slidably mounted onto the bearing part 101, and then the first fixing part 102 and the fixing mating part 314 are tightened and fixed using screws. In some embodiments, the physical manifestation of the first fixing part 102 can be a screw hole, and the physical manifestation of the fixing mating part 314 can be a fixing hole; this will not be elaborated upon or limited here.

[0160] In one embodiment, the supporting mating part 313 overlaps the supporting part 101. Specifically, the supporting mating part 313 and the supporting part 101 can overlap each other. For example, the supporting mating part 313 can be an overlapping plate extending out of the mounting bracket 31, while the supporting part 101 can be a hanging plate formed on the top plate 120 of the housing 1, and the overlapping plate overlaps the hanging plate.

[0161] In one embodiment, the support mating part 313 is inserted into the support part 101. Specifically, the support mating part 313 and the support part 101 can be inserted into each other. For example, the support mating part 313 can be an insert plate extending out of the mounting bracket 31, and the support part 101 can be a slot formed on the top plate 120 of the housing 1, and the insert plate is inserted into the slot.

[0162] In one embodiment, to achieve a compact design, two fan assemblies 3 are arranged side-by-side on one side of the housing 1. A first partition plate 15 is provided between the two fan assemblies 3, and assembly units are respectively provided on both sides of the first partition plate 15. The first partition plate 15 is located between the side wall of the housing 1 and the total heat exchange core 2. Specifically, the two fan assemblies 3 are arranged on the same side of the housing 1, which facilitates rapid assembly of the two fan assemblies 3 in the same direction during the assembly process. Furthermore, the two fan assemblies 3 are separated by the first partition plate 15 so that the two fan assemblies 3 do not interfere with each other during operation.

[0163] By arranging the two fan assemblies 3 on the same side of the housing 1 and separating them by the first 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 first 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 air intake and exhaust inside and outside the housing 1, and ensuring that the air intake and exhaust paths do not affect each other, thus ensuring that indoor exhaust and outdoor intake are independent of each other.

[0164] In one embodiment, two of the fan assemblies 3 are arranged side by side between the indoor air outlet 11 and the outdoor air outlet 13.

[0165] One of the fan 32 outlets is connected to the outdoor air outlet 13, and the other fan 32 outlet is connected to the indoor air outlet 11. Specifically, the two fan assemblies 3 are arranged on the same side of the housing 1 and located between the indoor air outlet 11 and the outdoor air outlet 13. Thus, the fan assembly 3 adjacent to the indoor air outlet 11 is used to drive airflow in the fresh air duct, and the fan assembly 3 adjacent to the outdoor air outlet 13 is used to drive airflow in the exhaust air duct.

[0166] By arranging the fan assembly 3 between the indoor air outlet 11 and the outdoor air outlet 13, the air that needs to be output to the outside can be efficiently discharged to the outside through the outdoor air outlet 13 under the action of the corresponding fan 32. Similarly, the air that needs to be output to the inside can be efficiently transported 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 supply efficiency.

[0167] In one embodiment, the heat exchanger 5 is disposed between the indoor air outlet 11 and the corresponding outlet of the fan 32. Thus, the airflow output by the fan 32 of the fan assembly 3 adjacent to the indoor air outlet 11 can be directly blown onto the heat exchanger 5. This improves the heat exchange efficiency between the airflow and the heat exchanger 5, thereby increasing the heat exchange efficiency of the indoor air conditioning unit.

[0168] In one embodiment, a partition plate 65 may also be provided in the outer casing 1. A vent 651 is provided on the partition plate 65. The partition plate 65 is located inside the outer casing 1, inside the indoor air outlet 11. The partition plate 65 separates 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 vent 651, and the heat exchanger 5 is located between the vent 651 and the indoor air outlet 11.

[0169] Specifically, the partition plate 65 provided in the outer casing 1 can be arranged around the outdoor air outlet 13 to form a space for installing the heat exchanger 5. This allows the heat exchanger 5 to be easily installed at the indoor air outlet 11 and ensures that the airflow flowing from the fresh air duct can effectively exchange heat with the heat exchanger 5.

[0170] 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 covers the area of ​​the indoor air outlet 11 to 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 vent 651 for heat exchange and then output from the indoor air outlet 11, ensuring that the airflow output from the indoor air outlet 11 receives sufficient heat exchange, thereby improving the heat exchange efficiency.

[0171] In one embodiment, a second partition plate 16 is further provided in the outer casing 1; the second partition plate 16 is disposed between the partition plate 65 and the total heat exchange core 2. Specifically, the second partition plate 16 is further placed in the outer casing 1, which 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 to meet the installation requirements of the total heat exchange core 2.

[0172] Of the four corners of the total heat exchange core 2, the corner facing the indoor side is connected to the second 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 first partition plate 15, thereby isolating the outlet 222 of the fresh air heat exchange channel 22 from the outlet 212 of the exhaust heat exchange channel 21. 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 achieve mutual isolation between the exhaust channel and the fresh air channel.

[0173] In one embodiment of this application, as shown in Figures 5, 8, and 9, an indoor air conditioning unit is also provided. This indoor air conditioning unit can improve the air delivery efficiency of the fan 32. The indoor air conditioning unit includes a housing 1. The housing 1 is 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 is formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0174] The indoor unit of the air conditioner may also include a total heat exchange core 2. The total heat exchange core 2 is 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.

[0175] 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.

[0176] 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 is mounted on the mounting bracket 31. One of the two fan assemblies 3 may be disposed in the fresh air duct, and the other of the two fan assemblies 3 may be disposed in the exhaust air duct.

[0177] The mounting bracket 31 is spaced apart from the top plate 120 of the outer casing 1. The fan 32 may be equipped with a centrifugal fan. As shown in Figures 8 and 9, the mounting bracket 31 is also provided with a ventilation notch 311. The ventilation notch 311 is configured to allow airflow to flow between the top and bottom of the mounting bracket 31.

[0178] 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 120 of the housing 1, so that during the operation of the fan 32, the airflow entering and exiting the total heat exchange core 2 will flow to the upper and lower surfaces of the mounting bracket 31 respectively.

[0179] 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 centrifugal fan, when the air intake volume of the two sides of the centrifugal fan is significantly different, the air on the upper side and the lower side of the mounting bracket 31 can flow alternately to automatically balance the air intake volume of the two sides of the centrifugal fan.

[0180] 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.

[0181] In one embodiment, the ventilation opening 311 may be arranged outside the fan 32 and away from the total heat exchange core 2.

[0182] Specifically, the ventilation opening 311 can be arranged close to the side wall of the outer casing 1. Furthermore, to meet the requirement of the mounting bracket 31 supporting the fan 32, the ventilation opening 311 is also arranged on the outside of the fan 32. Since the ventilation opening 311 is close to the side wall of the outer casing 1 and far from the total heat exchange core 2, it can reduce the area of ​​poor ventilation that occurs near the side wall of the outer casing 1.

[0183] 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.

[0184] In one embodiment, the mounting bracket 31 may also be provided with a clearance notch 312, as shown in Figures 8 and 9. The clearance notch 312 is arranged adjacent to the total heat exchange core 2, and the corresponding corner of the total heat exchange core 2 can be sandwiched between the two fans 32.

[0185] 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 using the space provided by the clearance notch 312, thereby achieving a compact structural design within the housing 1.

[0186] 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 first partition plate 15, allowing the total heat exchange core 2 to be arranged closer to the fans 32. In this way, the components in the housing 1 are more compactly distributed, which is more conducive to the design requirements of overall structural compactness, thereby reducing the overall volume of the housing 1.

[0187] Meanwhile, since the total heat exchange core 2 is set as close as possible to the inlet of the fan 32, it is more conducive to increasing the negative pressure at the heat exchange core, so as to accelerate the flow speed of the air in the total heat exchange core 2.

[0188] 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.

[0189] The indoor unit of the air conditioner may include a housing 1. The housing 1 is 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 is formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0190] The indoor unit of the air conditioner may also include a total heat exchange core 2, which is disposed in the outer casing 1. The total heat exchange core 2 is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0191] The indoor unit of the air conditioner may also include a heat exchanger 5, which is configured to perform heat exchange on the airflow passing through the fresh air duct.

[0192] The indoor unit of the air conditioner may also include two fan assemblies 3. Each fan assembly 3 includes a mounting bracket 31 and a fan 32. The fan 32 is mounted on the mounting bracket 31. One of the two fan assemblies 3 is disposed in the fresh air duct, and the other of the two fan assemblies 3 is disposed in the exhaust air duct.

[0193] The indoor unit of the air conditioner may also include an insulation frame 6. The insulation frame 6 is provided with a first connection port 61, a second connection port 62, a third connection port 63, and a fourth connection port 64. 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.

[0194] Specifically, when the side walls of the outer shell 1 need to be insulated, the integrated insulation frame 6 can be placed into the outer shell 1, and the four sides of the insulation frame 6 can be attached to the corresponding inner side walls of the outer shell 1. In this way, simply placing the entire insulation frame 6 into the outer shell 1 is enough to achieve thermal insulation of the four sides of the outer shell 1.

[0195] 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, the insulation frame 6 is a single, integral structure, avoiding gaps caused by assembly. Therefore, the insulation frame 6 according to this application has better thermal insulation performance. In addition, relevant components in the outer shell 1 are installed within the insulation frame 6 to improve assembly precision and consistency, thereby increasing assembly efficiency.

[0196] In one embodiment, the insulation frame 6 is provided with a partition plate 65, and the partition plate 65 is provided with a ventilation opening 651. 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 insulation frame 6 into a first installation area 610 and a second installation area 620.

[0197] The heat exchanger 5 may be installed in the first installation area 610, and the heat exchanger 5 is arranged between the vent 651 and the first connection port 61. The total heat exchange core 2 and the fan assembly 3 may be installed in the second installation area 620. The outlet of one of the fans 32 is connected to the fourth connection port 64, and the outlet of the other fan 32 is connected to the first installation area 610 through the vent 651.

[0198] Specifically, since the insulation frame 6 is built into the outer shell 1, the relevant components in the outer shell 1 are also surrounded by the insulation frame 6. To allow for the separate installation of different components, a partition plate 65 can be installed within the insulation frame 6. The partition plate 65 is an integral structure with the insulation frame 6. Under the action of the partition plate 65, the insulation frame 6 forms a separated first installation area 610 and a second installation area 620. The first installation area 610 is used to install the heat exchanger 5, ensuring that the airflow entering the room can effectively exchange heat with the heat exchanger 5, thereby improving heat exchange efficiency. By setting the partition plate 65 within the insulation frame 6, the partition plate 65 divides the insulation frame 6 into two installation areas for the separate installation of relevant components in the outer shell 1, improving assembly precision and consistency, and further enhancing assembly efficiency.

[0199] In one embodiment, the second mounting area 620 corresponds to the mounting of components such as the fan assembly 3, the total heat exchange core 2, and the electrical control box 4. In actual assembly, based on the description in the above embodiment, a first partition plate 15 and a second partition plate 16 can be provided in the second mounting area 620.

[0200] Specifically, the two fan assemblies 3 are arranged side by side on one side of the housing 1; a first partition plate 15 is also provided in the housing 1, and the first partition plate 15 is located between the two fan assemblies 3. The inner wall of the insulation frame 6 is also provided with a positioning groove 66, and the end of the first partition plate 15 is inserted into the positioning groove 66; the first partition plate 15 is disposed between the positioning groove 66 and the total heat exchange core 2.

[0201] By providing a positioning groove 66, during the installation of the first partition plate 15, the end of the first partition plate 15 can be inserted into the positioning groove 66, so as to pre-assemble the first partition plate 15 onto the outer shell 1. This can effectively reduce the amount of screws used when fixing the first partition plate 15, thereby improving the efficiency of disassembly and assembly.

[0202] In one embodiment, the first partition plate 15 may be provided with a folded edge 151, and the top plate 120 of the outer casing 1 may also be provided with a slot 103, as shown in FIG6. The end of the first partition plate 15 is inserted into the positioning groove 66, and the folded edge 151 abuts against the top plate 120 of the outer casing 1 and is secured in the slot 103. The folded edge 151 can be fixedly connected to the top plate 120 of the outer casing 1 by screws.

[0203] Specifically, to facilitate quick installation of the first partition plate 15 by operators, the folded edge 151 can be inserted into the slot 103 on the top plate 120 of the outer casing 1 while the end of the first partition plate 15 is inserted into the positioning groove 66. In this way, the positioning groove 66 and the slot 103 cooperate to pre-position the first partition plate 15. Finally, the folded edge 151 can be fixed to the top plate 120 of the outer casing 1 with a single screw.

[0204] By providing a slot 103 on the outer casing 1, during the installation of the first partition plate 15, the folded edge 151 of the first partition plate 15 will be inserted into the slot 103, so as to pre-assemble the first partition plate 15 onto the outer casing 1. Then, the folded edge 151 is fixedly installed on the top plate 120 of the outer casing 1 by a screw to achieve the fixed installation of the first partition plate 15. In this way, the number of screws used during the fixed installation of the first partition plate 15 can be effectively reduced, thereby improving the efficiency of disassembly and assembly.

[0205] In another embodiment, the second partition 16 is disposed between the partition 65 and the total heat exchange core 2, as shown in FIG6. Specifically, by providing the second partition 16 in the outer casing 1, the second partition 16 connects the partition 65 and the total heat exchange core 2. In this way, the exhaust duct and the fresh air duct can be separated at the total heat exchange core 2 by the second partition 16, so as to ensure that the outdoor exhaust and indoor intake do not affect each other.

[0206] In one embodiment, to extend the service life of the total heat exchange core 2, the insulation frame 6 is provided with two opposing first mounting portions 67. A first filter 18 is disposed between the two first mounting portions 67. The first filter 18 can be disposed between the total heat exchange core 2 and the indoor return air vent 12.

[0207] Specifically, the first filter 18 is installed and fixed through two first mounting parts 67 formed in the insulation frame 6. The first filter 18 can filter the air input into the outer casing 1 from the indoor return air vent 12, and then the filtered air enters the total heat exchange core 2.

[0208] The first filter screen 18 can be assembled to the first mounting part 67 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.

[0209] 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. The first mounting part 67 on the insulation frame 6 allows for easy installation of the first filter 18, improving assembly convenience.

[0210] In one embodiment, as shown in FIG7, the thermal insulation frame 6 is provided with two opposing second mounting portions 68, and a second filter 19 is provided between the two second mounting portions 68. The second filter 19 is located between the total heat exchange core 2 and the outdoor air inlet 14.

[0211] 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 structure such as a slot to meet the installation requirements of the second filter 19.

[0212] By setting the second filter 19, outdoor air can be effectively filtered after entering the outer casing 1, thus providing dust protection for the total heat exchange core 2 and improving its service life. The second mounting part 68 on the insulation frame 6 can also be used to easily install the second filter 19, improving assembly convenience.

[0213] 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 insulation frame 6, and a second mounting plate 52 is provided between the second end of the heat exchanger 5 and the insulation frame 6. The second mounting plate 52 is inclined, tilted towards the indoor air outlet 11, and connected between the indoor air outlet 11 and the indoor return air outlet 12.

[0214] Specifically, the heat exchanger 5 is fixedly installed in the first mounting area 610 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.

[0215] 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 quickly flow to the indoor air outlet 11.

[0216] By providing mounting plates at both ends of the heat exchanger 5, a relatively enclosed air outlet area is formed between the heat exchanger 5 and the indoor air outlet 11. Furthermore, the second mounting plate 52 extends obliquely toward the indoor air outlet 11. The second mounting plate 52 can guide the airflow after heat exchange in the heat exchanger 5, so that the airflow after heat exchange can flow smoothly toward the indoor air outlet 11.

[0217] 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 610 and arranged below the heat exchanger 5. Specifically, the water receiving tray may be installed in the first mounting area 610. The water receiving tray and the top plate 120 of the outer casing 1 form a relatively closed heat exchange cavity in the first mounting area 610, so that the airflow entering the heat exchange cavity can exchange heat well with the heat exchanger 5.

[0218] The drip tray can collect the defrosting water from heat exchanger 5.

[0219] Additionally, a drain pump 53 may be provided in the outer casing 1, as shown in Figure 5. The drain pump 53 may be arranged above the water receiving tray and between the second mounting plate 52 and the partition plate 65.

[0220] By installing a water collection tray at the bottom of the first installation area 610, the requirement for condensate collection on the evaporator of the heat exchanger 5 can be met. Simultaneously, the drain pump 53 is positioned on the outside of the second mounting plate 52, that is, on the side of the second mounting plate 52 furthest from the heat exchanger 5. This reduces the obstruction of the airflow after heat exchange by the drain pump 53 as it flows towards the indoor air outlet 11, thus reducing wind resistance at the indoor air outlet 11 and improving airflow efficiency.

[0221] In one embodiment of this application, as shown in Figures 4 to 7, this application also provides an air conditioner indoor unit, which can achieve a compact design of the overall structure.

[0222] 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 is formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0223] The indoor unit of the air conditioner may further include a total heat exchange core 2, which is disposed in the outer casing 1. The total heat exchange core 2 is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct;

[0224] The indoor unit of the air conditioner may also include a heat exchanger 5, which is configured to perform heat exchange on the airflow passing through the fresh air duct.

[0225] 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 is disposed in the fresh air duct, and the other of the two fan assemblies 3 is disposed in the exhaust air duct.

[0226] The outer casing 1 has a first mounting area 610 and a second mounting area 620. The heat exchanger 5 can be disposed in the first mounting area 610, and the fan assembly 3 and the total heat exchange core 2 can be disposed in the second mounting area 620. The indoor air outlet 11 communicates with the first mounting area 610. The indoor return air outlet 12, the outdoor air outlet 13, and the outdoor air inlet 14 communicate with the second mounting area 620. The first mounting area 610 extends to the indoor return air outlet 12 and overlaps with a portion of the indoor return air outlet 12 inside the outer casing 1.

[0227] Specifically, because 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. Furthermore, the distance between the indoor return air vent 12 and the indoor water outlet on the outer casing 1 cannot be too small to meet the connection requirements of the user's home piping. To make the structure more compact, the first installation area 610 inside the outer casing 1 can be configured to occupy part of the area of ​​the indoor return air vent 12 to meet the installation requirements of the relevant components.

[0228] Specifically, the first installation area 610 extends to the indoor return air vent 12 and overlaps with a portion of the indoor return air vent 12 inside the outer casing 1. In this way, the length of the first installation area 610 can be increased, thereby allowing components such as the heat exchanger 5 and the drain pump 53 to be installed in the first installation area 610. Furthermore, it ensures that a compact structural design is achieved while the heat exchanger 5 has a sufficiently large heat exchange area.

[0229] By providing independent first installation area 610 and second installation area 620 within the outer casing 1, the first installation area 610 is used to meet the installation requirements of the heat exchanger 5. Simultaneously, to meet the requirements of a compact internal structure design for the outer casing 1 and the heat exchanger 5's heat exchange area requirements, the first installation area 610 can be configured to occupy a portion of the indoor return air vent 12, such that a portion of the indoor return air vent 12 coincides with the projection of the first installation area 610 onto the plane containing 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 610 to accommodate the installation of a heat exchanger 5 with a larger heat exchange area. In this way, the heat exchange area of ​​the heat exchanger 5 can be increased, while also meeting the requirements of a compact internal structure design for the outer casing 1, thereby reducing the overall size of the air conditioning indoor unit.

[0230] In one embodiment, based on the above embodiment, the insulation frame 6 can be divided into a first installation area 610 and a second installation area 620 by a partition plate 65. The insulation frame 6 can partially block the indoor return air vent 12 from inside the outer shell 1.

[0231] Specifically, by adding an insulation frame 6 to the outer shell 1, on the one hand, the side wall of the outer shell 1 can be insulated as a whole to meet the requirements of thermal insulation. In addition, the insulation frame 6 is an integral structure, avoiding gaps caused by the assembly structure and achieving 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 improving assembly efficiency.

[0232] In one embodiment, the ventilation area of ​​the second connection port 62 is smaller than the ventilation area of ​​the indoor return air vent 12. The insulation frame 6 partially blocks the indoor return air vent 12 inside the outer shell 1.

[0233] Specifically, by designing the ventilation area of ​​the second connection port 62 to be smaller than that of the indoor return air port 12, the length of the first installation area 610 of the insulation frame 6 can be extended inside the outer shell 1 to meet the installation requirements of the heat exchanger 5 and achieve a compact structural design.

[0234] The area of ​​the indoor return air vent 12 that is blocked by the insulation frame 6 and the ratio of the total open area of ​​the indoor return air vent 12 can be obtained by testing according to different air supply requirements, as long as the requirements of the return air volume of the indoor air conditioning unit are met, and no restrictions are imposed here.

[0235] In another embodiment of this application, as shown in Figures 6 and 10, this application may also provide an air conditioner indoor unit, which can realize the strong and weak current separation design of related electrical components in the outer casing 1.

[0236] 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 passage is formed between the outdoor air inlet 14 and the indoor air outlet 11, and an exhaust air passage is formed between the indoor return air outlet 12 and the outdoor air outlet 13. An air valve (unmarked) is respectively provided on the outdoor air outlet 13 and the outdoor air inlet 14.

[0237] 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.

[0238] 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 is disposed in the fresh air duct, and the other of the two fan assemblies 3 is disposed in the exhaust air duct.

[0239] The indoor unit of the air conditioner may also include an electrical control box 4. The electrical control box 4 may contain control components and is located inside the outer casing 1.

[0240] The outer casing 1 may be provided with a first wiring section 171. The cable of the air valve is routed and extends through the first wiring section 171. The cable of the air valve extends from the first end of the electrical control box 4 into the electrical control box 4 and is electrically connected to the control component. The cable of the fan 32 is arranged outside the first wiring section 171 and extends from the second end of the electrical control box 4 into the electrical control box 4 and is electrically connected to the control component; the first end and the second end of the electrical control box 4 are arranged facing away from each other.

[0241] Specifically, the outer casing 1 is provided with a first wiring section 171, which 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.

[0242] Furthermore, the cables for the damper and the fan 32 extend into the electrical control box 4 from different ends, effectively separating high-voltage and low-voltage wires. This prevents the fan 32 cable from crossing with the damper cable during wiring within the housing 1, thus avoiding the mixing of high-voltage and low-voltage wires. 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.

[0243] 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 first wiring section 171 guides the air valve cable from the first end of the electrical control box 4 into the electrical control box 4. 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 enters the electrical control box 4 from the second end of the electrical control box 4, effectively separating high-voltage and low-voltage circuits and improving the safety and reliability of the air conditioning indoor unit.

[0244] 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 are separate from each other. The cable of the air valve is routed through the first wiring section 171 and extends into the electrical control box 4 to be electrically connected to the control component, and the cable of the fan 32 is routed through the second wiring section 172 and extends into the electrical control box 4 to be electrically connected to the control component.

[0245] Specifically, in order to simultaneously guide and protect the cables of the air valve and the fan 32, a first wiring section 171 and a second wiring section 172 can be 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 mutual interference between the high-voltage and low-voltage cables.

[0246] By providing independent first wiring section 171 and second wiring section 172 within the outer casing 1, the cable for the damper is routed through the first wiring section 171 and guided by it to extend into the electrical control box 4. Similarly, the cable for the fan 32 is routed through the second wiring section 172 and guided by it to extend into the electrical control box 4. This ensures that the cables for the damper and the fan 32 are separated, achieving separation of high-voltage and low-voltage wiring. This makes the wiring within the outer casing 1 more organized and 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.

[0247] In one embodiment, the first wiring portion 171 may be arranged between the total heat exchange core 2 and the top plate 120 of the outer casing 1.

[0248] Specifically, the first wiring section 171 can guide the extension wiring of the damper's cable between the heat exchange core 2 and the top plate 120 of the outer casing 1. This allows for full utilization of the space between the heat exchange core 2 and the outer casing 1 to manage the damper's cable wiring. On one hand, this allows the damper's cable to be routed closer to the electrical control box 4; on the other hand, the heat exchange core 2 shields the damper's cable, thus organizing the wiring harness.

[0249] By placing the first wiring section 171 between the heat exchange core 2 and the top plate 120 of the outer casing 1, the space between the heat exchange core 2 and the top plate 120 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.

[0250] In one embodiment, the two fan assemblies 3 are 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, which simplifies the operation of wiring the two fans 32 separately and improves assembly efficiency.

[0251] Furthermore, the two fans 32 are arranged adjacent to each other. This facilitates the simultaneous wiring of the cables for the fans 32, enabling a neat and organized design for the power cable harness.

[0252] In one embodiment, the electrical control box 4 may be disposed in the exhaust duct, and the electrical control box 4 is located on the side of the total heat exchange core 2.

[0253] Specifically, the control box 4 is installed in the exhaust duct formed in the outer casing 1, utilizing the space of the exhaust duct. Simultaneously, because the control box 4 is located within the exhaust duct, the heat generated by the control components within it can be carried away by the airflow within the exhaust duct, thus achieving heat dissipation.

[0254] In addition, since the electrical control box 4 is located on one side of the total heat exchange core 2, the cable of the air valve can enter the electrical control box 4 after passing through the total heat exchange core 2, thereby shortening the wiring length.

[0255] By placing the electrical control box 4 on the side of the total heat exchange core 2 and in the exhaust channel, the airflow in the exhaust channel can be used to dissipate heat from the electrical control box 4. On the other hand, the cable can be directly extended to the electrical control box 4 on the side through the wiring above the total heat exchange core 2, which can shorten the extension length of the cable.

[0256] In one embodiment, a wiring plate 17 may be provided in the outer casing 1, and the wiring plate 17 is disposed between the total heat exchange core 2 and the top plate 120 of the outer casing 1. A first wiring groove may be provided on the wiring plate 17, and the cable of the air valve may be disposed in the first wiring groove, which is a first wiring section 171.

[0257] Specifically, in order to facilitate the formation of the first wiring section 171 in the housing 1, a separate wiring plate 17 can be used to form the first wiring section 171. The wiring plate 17 is provided with a first wiring groove for the air valve wiring, so as to restrict and guide the direction of the air valve cable through the first wiring groove. At the same time, the first wiring groove ensures that the air valve cable is independent of the fan 32 cable and does not cross contact.

[0258] During the assembly of the housing 1, the cable guide plate 17 will be arranged against the top plate 120 of the housing 1 and can be fixed to the top plate 120 of the housing 1 with screws. The cable guide plate 17 may be made of insulating material to improve the safety of cable wiring.

[0259] By providing a wiring plate 17 between the top plate 120 of the heat exchange core 2 and the outer shell 1, and providing a first wiring groove on the wiring plate 17 to meet the cable wiring requirements of the air valve, the function of the first wiring section 171 can be realized.

[0260] In one embodiment, the wiring plate 17 may be provided with a second wiring groove, the second wiring groove being arranged at intervals from the first wiring groove, and at least one cable of the fan 32 being disposed in the second wiring groove.

[0261] Specifically, in order to meet the wiring requirements of the fan 32 through the wiring board 17, a second wiring groove can be provided on the wiring board 17. The second wiring groove is separated from the first wiring groove to achieve the separation of strong and weak current.

[0262] By providing a second wiring groove at an interval from the first wiring groove on the wiring plate 17, the second wiring groove can meet the wiring requirements of the fan 32's cables, thereby realizing the function of the second wiring section 172.

[0263] In one embodiment, wire clips may be provided in the first wiring slot and the second wiring slot, respectively. Specifically, after the cables in the first and second wiring slots are in place, the wire clips can be used to limit the cables inside the wiring slots from the outside, thereby preventing the cables from coming out of the wiring slots. By providing wire clips in the first and second wiring slots, the wire clips can confine the cables within the wiring slots, preventing the cables from coming out of the wiring slots, thereby improving the reliability of the wiring.

[0264] In one embodiment, when an insulation frame 6 is provided in the outer casing 1, a wiring trough 69 may also be provided in the second mounting area 620 of the insulation frame 6. The wiring trough 69 is arranged between the total heat exchange core 2 and the electrical control box 4; the cable of the air valve is also arranged in the wiring trough 69.

[0265] Specifically, after the air valve cable passes between the top plate 120 of the total heat exchange core 2 and the outer shell 1, it can be guided by the wiring groove 69 formed on the insulation frame 6 to extend into the electrical control box 4.

[0266] By providing an additional cable tray 69 on the insulation frame 6, it can cooperate with the first wiring section 171 to route the cable of the air valve. This allows full utilization of the insulation frame 6's own structure to further meet the cable routing requirements of the air valve, thereby improving the cable routing quality.

[0267] In one embodiment of this application, as shown in Figures 4 to 6, this application also provides an air conditioner indoor unit. The air conditioner indoor unit can meet the requirements of internal circulation airflow and simplify the structure within the outer casing 1 to reduce assembly and manufacturing costs.

[0268] The air conditioner indoor unit provided in this application may include a housing 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.

[0269] The indoor unit of the air conditioner may also include a total heat exchange core 2, which is 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 conduct heat to each other. An exhaust channel is formed in the outer casing 1 between the indoor return air vent 12, the exhaust heat exchange channel 21, and the outdoor air outlet vent 13, and a fresh air channel is formed in the outer casing 1 between the outdoor air inlet vent 14, the fresh air heat exchange channel 22, and the indoor air outlet vent 11.

[0270] The indoor unit of the air conditioner may also include a heat exchanger 5, which is configured to perform heat exchange on the airflow passing through the fresh air duct.

[0271] The indoor unit of the air conditioner may also include two fan assemblies 3. Each fan assembly 3 includes a mounting bracket 31 and a fan 32. The fan 32 is mounted on the mounting bracket 31. One of the two fan assemblies 3 is disposed in the fresh air duct, and the other of the two fan assemblies 3 is disposed in the exhaust air duct.

[0272] A damper 161 is provided between the total heat exchange core 2 and the outer shell 1. The damper 161 can 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 damper 161 can be configured to selectively connect the indoor air outlet 11 and the indoor return air outlet 12.

[0273] 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 damper 161 is directly added between the inlet of the exhaust air heat exchange channel 21 and the outlet of the fresh air heat exchange channel 22 of the total heat exchange core 2.

[0274] When damper 161 is 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.

[0275] When internal circulation is required, damper 161 can be opened. On the indoor side of the total heat exchange core 2, damper 161 connects the indoor return air inlet 12 and the indoor air outlet 11, while the dampers of the outdoor air inlet 14 and the outdoor air outlet 13 are closed.

[0276] By installing a damper 161 between the inlet of the exhaust heat exchange channel 21 and the outlet of the fresh air heat exchange channel 22 in the total heat exchange core 2, the damper 161 can be used to control the interconnection between the indoor return air vent 12 and the indoor air outlet 11. Therefore, when the indoor temperature has not reached the set temperature value, opening the damper 161 connects the indoor return air vent 12 and the indoor air outlet 11, enabling rapid temperature adjustment and improving the user experience. Furthermore, since the damper 161 is installed on the indoor side of the total heat exchange core 2 and separates the inlet of the exhaust heat exchange channel 21 from the outlet of the fresh air heat exchange channel 22, internal circulation can be achieved without adding an additional internal circulation duct, reducing the number of components used and thus lowering assembly and manufacturing costs.

[0277] In one embodiment, a first partition plate 15 is provided on one side of the outlet 222 of the fresh air heat exchange channel 22 of the total heat exchange core 2, and a second partition plate 16 is provided on the other side of the outlet 222 of the fresh air heat exchange channel 22 of the total heat exchange core 2. The first partition plate 15 and the second partition plate 16 can be configured to separate the exhaust channel and the fresh air channel. The first partition plate 15 can be arranged between the indoor air outlet 11 and the outdoor air outlet 13, and the second partition plate 16 can be arranged between the indoor return air outlet 12 and the indoor air outlet 11. A connecting opening is provided on the second partition plate 16. The damper 161 is disposed in the connecting opening.

[0278] Specifically, the first partition plate 15 and the second partition plate 16 can meet the installation requirements of installing the total heat exchange core 2 in the outer casing 1 and achieving mutual isolation between the exhaust air channel and the fresh air channel. The damper 161 is installed in the communication port on the second partition plate 16 to facilitate the installation of the damper 161 in the outer casing 1.

[0279] By setting the first partition plate 15 and the second partition plate 16, the exhaust air channel and the fresh air channel can be separated at the outlet 222 of the fresh air heat exchange channel 22 by the total heat exchange core 2. At the same time, the connecting port set on the second partition plate 16 can connect the exhaust air channel and the fresh air channel to each other so that the indoor return air port 12 can be connected to the indoor air outlet 11 to realize internal circulation. The damper 161 installed at the connecting port can realize the start and stop of internal circulation and facilitate the installation and fixation of the damper 161.

[0280] As shown in Figures 16 to 21, the outer casing 1 may be provided with a maintenance port 104 to meet maintenance requirements. Furthermore, the outer casing 1 is also provided with a maintenance door 105 for opening and closing the maintenance port 104. When maintenance or replacement of the total heat exchange core 2 and the filter screen is required, the maintenance door 105 can be opened, and the maintenance or replacement operation can be performed through the maintenance port 104.

[0281] The outer casing 1 may be equipped with a first filter 18 and a second filter 19. The first filter 18 is used to filter the air entering the outer casing 1 from the indoor return air vent 12, and the second filter 19 is used to filter the air entering the outer casing 1 from the outdoor air inlet 14.

[0282] In one embodiment of this application, in order to increase the filtration area of ​​the first filter screen 18 and at the same time meet the installation requirements of convenient disassembly and assembly of the first filter screen 18, the length of the first filter screen 18 is set to be greater than the opening size of the maintenance port 104, and the first filter screen 18 can be configured to bend and deform in the length direction after being subjected to force.

[0283] Specifically, the total heat exchange core 2 and the first filter screen 18 are arranged at the maintenance port 104. The overall length of the first filter screen 18 is greater than the opening size of the maintenance port 104, thus increasing the filtration area of ​​the first filter screen 18 without being limited by the size of the maintenance port 104. Simultaneously, in order to allow the first filter screen 18 to be installed and removed via the maintenance port 104, the first filter screen 18 can be configured to bend and deform along its length under stress. Thus, during the installation and removal of the first filter screen 18, bending it allows for installation and removal operations via the maintenance port 104.

[0284] By extending the first filter screen 18, the filtration area of ​​the first filter screen 18 can be effectively increased, thus improving the filtration coverage. Furthermore, since the filtration area of ​​the first filter screen 18 is increased, its length will be greater than the opening size of the maintenance port 104. To facilitate disassembly and replacement of the first filter screen 18, it can be bent and deformed along its length. This allows for easy disassembly and replacement via the maintenance port 104, meeting the requirements for convenient disassembly and replacement.

[0285] In one embodiment, as shown in FIG20, the first filter screen 18 may be provided with at least one deformable portion 181 along its length. The deformable portion 181 is configured to be able to bend and elastically deform when the first filter screen 18 is subjected to force.

[0286] Specifically, in order to meet the bending requirements during the assembly and disassembly of the first filter screen 18, it is also necessary to further ensure that the first filter screen 18 can remain flat after being assembled into the housing 1 to meet the filtration requirements. For this purpose, a deformation part 181 can be provided on the first filter screen 18.

[0287] During use, when the first filter screen 18 needs to be bent, it will bend and deform at the deformation part 181 under stress. After the first filter screen 18 is installed into the housing 1, it is not subjected to bending pressure, allowing the deformation part 181 to elastically return to its original position. This ensures that the first filter screen 18 remains flat after being assembled to meet the filtration requirements.

[0288] This design extends the first filter screen 18 within the housing 1, effectively increasing its filtration area and improving its coverage. Furthermore, since the increased filtration area of ​​the first filter screen 18 results in a length greater than the opening size of the service port 104, the first filter screen 18 can be bent at the deformation portion 181 under stress to facilitate disassembly and replacement. This allows the first filter screen 18 to be bent for easy disassembly and replacement via the service port 104, thus meeting the requirements for convenient disassembly and replacement.

[0289] In one embodiment, as shown in Figures 20 and 21, the first filter 18 includes a first frame 182 and a first filter (not shown). The first filter is disposed on the first frame 182. The first frame 182 has at least one notch structure 183 on its edge along its length. The notch structure 183 can be configured such that when the first frame 182 is subjected to force, the first frame 182 bends at the notch structure 183.

[0290] Specifically, in order to meet the requirements of bending deformation, the first frame 182 can be provided with a notch structure 183 on the edge of the first frame 182 along its length. When the first frame 182 is bent under force, the first frame 182 can deform at the notch structure 183 to meet the bending deformation requirements of the first filter screen 18.

[0291] In one embodiment, two first frames 182 are provided. The two first frames 182 are arranged side by side. A structural reinforcement 184 is also provided between the two first frames 182 along the length direction of the two first frames 182. The notch structure 183 extends along the width direction of the first frame 182 and is distributed on the structural reinforcement 184.

[0292] Specifically, since the first frame 182 is relatively long, structural reinforcement members 184 can be added to the sides of the first frame 182 along the width direction to improve the overall structural strength. The structural reinforcement member 184 is generally strip-shaped to enhance the structural strength of the first frame 182. At the same time, the notch structure 183 extends to the structural reinforcement member 184, so that the structural reinforcement member 184 can also deform when the first filter screen 18 is bent.

[0293] By providing a structural reinforcement 184 along its width on the first frame 182, the structural reinforcement 184 can effectively improve the structural strength of the first frame 182. Simultaneously, the notch structure 183 extends further along the structural reinforcement 184. During the bending of the first filter screen 18, the first filter screen 18 can be further bent along the notch structure 183 on the structural reinforcement 184, thereby increasing the degree of bending of the first filter screen 18 and improving the ease of assembly and disassembly.

[0294] In another embodiment, the first filter 18 may include a plurality of first frames 182, each of which is provided with a first filter; adjacent first frames 182 are connected together, and the connection portion of adjacent first frames 182 forms a deformation portion 181. Specifically, the first filter 18 may adopt a structure of multiple first frames 182, and a deformation portion 181 may be formed at the connection portion of adjacent first frames 182 to meet the bending deformation requirements of the first filter 18.

[0295] Multiple first frames 182 are used to install the first filter screen. When the first filter screen 18 is bent, it can deform at the deformation part 181 formed at the connection between the two first frames 182 to meet the requirements of bending deformation for disassembly and assembly.

[0296] The first frame 182 is an integral structure, and the first frame 182 is integrally injection molded to improve the overall structural strength of the first filter screen 18.

[0297] Alternatively, the multiple first frames 182 can be a separate structure, and the first filter screen 18 may further include a flexible connector, with two adjacent first frames 182 connected together by the flexible connector. The flexible connector forms the deformable part 181. The first filter screen 18 is disposed on the separate first frames 182, and adjacent first frames 182 are assembled together by the flexible connector. In this way, when the first filter screen 18 is bent, elastic deformation can be generated by the flexible connector to meet the requirements of bending and deforming the first filter screen 18 for assembly and disassembly.

[0298] In one embodiment, a damper 161 is further provided between the total heat exchange core 2 and the outer shell 1. The damper 161 is 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 damper 161 is configured to selectively connect the indoor air outlet 11 and the indoor return air outlet 12.

[0299] The damper 161 and the total heat exchange core 2 are arranged on the same side of the first filter 18. Specifically, by setting the damper 161, the requirements for indoor air circulation can be met, and the first filter 18 can also filter the air entering the outer casing 1 during the internal circulation process.

[0300] In addition, a first partition plate 15 is provided in the outer casing 1. One end of the first partition plate 15 is connected to the total heat exchange core 2, and the first partition plate 15 separates the two fan assemblies.

[0301] The outer casing 1 is also provided with a second partition plate 16. One end of the second partition plate 16 can be connected to the total heat exchange core 2, and the second partition plate 16 separates the indoor air outlet 11 and the indoor air return outlet 12.

[0302] The total heat exchange core 2 separates the outdoor air outlet 13 and the outdoor air inlet 14.

[0303] The second partition plate 16 may be provided with a connecting port. The connecting port is provided with the damper 161, and the connecting port may be configured to connect the indoor air outlet 11 and the indoor return air outlet 12. The damper 161 is also configured to open and close the connecting port.

[0304] The first filter 18 may also be located between the connecting port and the indoor return air vent 12, with the connecting port and the total heat exchange core 2 arranged on the same side of the first filter 18.

[0305] By setting the first partition plate 15 and the second partition plate 16, the exhaust air channel and the fresh air channel can be separated at the outlet 222 of the fresh air heat exchange channel 22 by the total heat exchange core 2. At the same time, the connecting port provided on the second partition plate 16 can allow the exhaust air channel and the fresh air channel 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. Furthermore, the damper 161 can be installed at the connecting port to control the start and stop of the internal circulation, and the damper 161 can be easily installed and fixed at the connecting port.

[0306] In one embodiment, the outer casing 1 is further provided with a first positioning slot and a second positioning slot. The first positioning slot is close to the service port 104, and the second positioning slot is away from the service port 104. The first positioning slot and the second positioning slot are arranged vertically. Here, "vertical" refers to the thickness direction of the air conditioner indoor unit or the outer casing 1 when the air conditioner indoor unit is in the installation state. For example, when the air conditioner indoor unit is installed on a horizontal plane, "vertical" refers to the direction perpendicular to the horizontal plane.

[0307] One end of the first filter 18 is inserted into the first positioning slot, and the other end of the first filter 18 is inserted into the second positioning slot. Specifically, the positioning slots provided in the housing 1 can accommodate the end of the first filter 18 to meet the installation requirements of the first filter 18. For example, the first positioning slot and the second positioning slot can be two first mounting portions formed in the insulation frame.

[0308] By providing vertically opposite positioning slots in the housing 1, the two ends of the first filter screen 18 can be positioned to ensure that the first filter screen 18 is securely and reliably assembled in the housing 1. At the same time, by bending the first filter screen 18, it can be disengaged from the first positioning slot and pulled out from the first maintenance port 104, thereby improving the convenience of disassembly.

[0309] In one embodiment, as shown in FIG18, a limiting slot 106 is also provided in the outer casing 1. The limiting slot 106 may be arranged, for example, parallel to the horizontal plane and extending laterally, and the first filter screen 18 may move along the limiting slot 106 and be locked in the limiting slot 106.

[0310] Specifically, after the two ends of the first filter screen 18 are positioned by the positioning slots, the first filter screen 18 can also be positioned by the limiting slot 106 in the length direction of the first filter screen 18 to improve the reliability of assembly.

[0311] By providing a laterally extending limiting groove 106 in the housing 1, the limiting groove 106 can further limit the first filter screen 18 in the length direction of the first filter screen 18, so as to ensure that the first filter screen 18 remains in a stable position during use, thereby meeting the requirement that air flows through the first filter screen 18 for filtration.

[0312] In one embodiment, as shown in FIG19, a limiting block 10 may also be provided in the outer casing 1, and the first filter screen 18 is arranged between the limiting block 107 and the total heat exchange core 2.

[0313] Specifically, when assembling the first filter screen 18, both ends of the first filter screen 18 are inserted into the corresponding positioning slots and are locked in the limiting slot 106. The limiting block 107 will limit the first filter screen 18 on the outside of the total heat exchange core 2.

[0314] When it is necessary to remove the first filter screen 18, the end of the first filter screen 18 is pulled out from the first positioning slot. During this process, the first filter screen 18 will move away from the limiting block 107, thereby avoiding the limiting block 107 from obstructing the removal process of the first filter screen 18.

[0315] By adding a limiting block 107 to the outer casing 1, and positioning the limiting block 107 on the side of the first filter screen 18 away from the total heat exchange core 2, the first filter screen 18 can be limited during assembly. During disassembly, the operator can easily remove the filter screen 18 by pulling it away from the limiting block 107, thus improving the ease of disassembly.

[0316] In another embodiment of this application, as shown in Figures 16 to 19, to reduce the size of the maintenance port 104, two mounting plates 108 may be provided in the housing 1. The two mounting plates 108 are distributed on both sides of the outdoor air inlet 14. Each mounting plate 108 is also provided with a limiting support portion 1081, which is arranged outside the maintenance port 104 and close to the outdoor air inlet 14. The second filter screen 19 is attached to the limiting support portion 1081. The second filter screen 19 is located between the total heat exchange core 2 and the limiting support portion 1081.

[0317] Specifically, since the second filter 19 needs to filter outdoor fresh air, it includes at least a high-efficiency filter and may further include a coarse filter if needed. Therefore, the second filter 19 is relatively thick. By using the limiting support 1081 on the mounting plate 108 to limit, support, and install the second filter 19, the opening size of the maintenance port 104 can be reduced.

[0318] Specifically, during assembly, the second filter screen 19 is inserted into the housing 1 through the service port 104, and then, for example, the second filter screen 19 is moved laterally parallel to the horizontal plane to abut against the limiting support part 1081. At this time, when the maintenance personnel hold the second filter screen 19 for operation, the second filter screen 19 is clamped between the top plate 120 and the bottom plate of the housing 1 in the height direction, between the two mounting plates 108 in the left and right direction, and limited, supported and installed by the limiting support part 1081 in the front and back direction.

[0319] The limiting support part 1081 can be a plate structure formed by stamping on the mounting plate 108, or a support block or other structural form that is fixed on the mounting plate 108 by screws or welding. No restrictions or details are provided here.

[0320] By providing mounting plates 108 on both sides of the outdoor air inlet 14 within the housing 1, and limiting supports 1081 on the mounting plates 108, the second filter 19 can be limited and supported to ensure reliable installation of the second filter 19 within the housing 1. Furthermore, since the limiting supports 1081 are located outside the maintenance opening 104, the second filter 19 can be inserted into the housing 1 through the maintenance opening 104 during installation, and then pushed laterally parallel to the horizontal plane to abut against the limiting supports 1081 to complete assembly. Similarly, during replacement and maintenance, the second filter 19 is pulled laterally away from the limiting supports 1081 to be removed from the maintenance opening 104. This eliminates the need to increase the opening size of the maintenance opening 104 to expose the second filter 19, thereby reducing the size of the maintenance opening 104 and improving the structural strength of the housing 1 while still meeting the requirements for disassembly and assembly of the second filter 19.

[0321] In one embodiment, the second filter 19 is sandwiched between the total heat exchange core 2 and the limiting support portion 1081.

[0322] Specifically, after the second filter 19 is installed into the outer casing 1 and supported by the limiting support part 1081, the total heat exchange core 2 can be installed into the outer casing 1 through the service port 104. After the total heat exchange core 2 is installed into the outer casing 1, the second filter 19 can be positioned and supported by the total heat exchange core 2, so that the second filter 19 is sandwiched between the total heat exchange core 2 and the limiting support part 1081.

[0323] The second filter screen 19 is installed and fixed by cooperating with the total heat exchange core 2 and the limiting support part 1081, so as to improve the installation reliability of the second filter screen 19.

[0324] In one embodiment, as shown in FIG19, the mounting plate 108 may further be provided with a detachable clamping member 109. The second filter screen 19 is clamped between the clamping member 109 and the limiting support portion 1081.

[0325] Specifically, the mounting plate 108 is equipped with a detachable clamping component 109, which can be attached to the mounting plate 108 by screws or clips. During assembly, after the second filter screen 19 is inserted into the housing 1 and supported by the limiting support part 1081, the clamping component 109 can be attached to the mounting plate 108 to press the second filter screen 19 against the limiting support part 1081. Then, the total heat exchange core 2 is inserted into the housing 1 through the service port 104.

[0326] By adding a clamping component 109 to the mounting plate 108, the clamping component 109 cooperates with the limiting support part 1081 to install and fix the position of the second filter screen 19, thereby improving the installation reliability of the second filter screen 19.

[0327] In one embodiment, the surface of the clamping member 109 facing away from the second filter screen 19 forms a guide surface. The guide surface is configured to guide the total heat exchange core 2 through the service port 104 into the housing 1. The guide surface may also rest against the total heat exchange core 2.

[0328] Specifically, the guide surface formed by the clamping component 109 can be used to guide the total heat exchange core 2 for precise assembly. During the process of inserting the total heat exchange core 2 into the housing 1 through the service port 104, the total heat exchange core 2 will be against the guide surface, and the guide surface will guide it to improve the accuracy and convenience of assembly.

[0329] By forming a guide surface on the clamping member 109, when the total heat exchange core 2 is installed into the housing 1, the total heat exchange core 2 can be precisely assembled into the housing 1 by means of the guide surface, thereby improving the ease of assembly.

[0330] In one embodiment, the clamping member 109 may include a second fixing part 1091 and a clamping part 1092. The second fixing part 1091 and the clamping part 1092 are connected together. The second fixing part 1091 is detachably disposed on the mounting plate 108. The guide surface is formed on the clamping part 1092. The mounting plate 108 may also be provided with a clearance groove 1082. The second fixing part 1091 is located in the clearance groove 1082, and the clamping part 1092 extends to the outside of the clearance groove 1082.

[0331] Specifically, since the clamping component 109 is installed on the mounting plate 108 before the total heat exchange core 2 is installed, in order to avoid interference between the clamping component 109 and the total heat exchange core 2 during the assembly, a clearance groove 1082 can be provided on the mounting plate 108, so that the second fixing part 1091 of the clamping component 109 is located in the clearance groove 1082.

[0332] Since the second fixing part 1091 is located in the relief groove 1082, the second fixing part 1091 will not protrude beyond the surface of the mounting plate 108. In this way, during the installation of the total heat exchange core 2, the total heat exchange core 2 is prevented from being stuck due to the second fixing part 1091 protruding from the surface of the mounting plate 108.

[0333] By providing a clearance groove 1082 on the mounting plate 108, the second fixing part 1091 of the clamping member 109 is installed in the clearance groove 1082. In this way, when installing the total heat exchange core 2, the second fixing part 1091 of the clamping member 109 on the mounting plate 108 will not protrude from the surface of the mounting plate 108, thus hindering the installation of the total heat exchange core 2 and improving the smoothness of assembly.

[0334] In some embodiments, the physical manifestations of the second fixing part 1091 and the pressing part 1092 can be plate-shaped structures, that is, the pressing part 109 can be a bent plate-shaped structure, so as to meet the requirements of avoiding the installation of the total heat exchange core 2 while also pressing the second filter screen 19.

[0335] In some embodiments, the mounting plate 108 can be fixedly mounted on the second mounting part of the insulation frame.

[0336] In one embodiment, as shown in FIG17, the second filter screen 19 is provided with a pull part 191. Specifically, during the disassembly of the second filter screen 19, the second filter screen 19 can be pulled out laterally with the help of the pull part 191.

[0337] By adding a pull part 191 to the second filter screen 19, the pull part 191 can be a structure such as a pull rope or a pull strap, so that when disassembling the second filter screen 19, the second filter screen 19 can be pulled out of the outer casing 1 by the pull part 191, so as to facilitate the operator to disassemble it.

[0338] 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.

[0339] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air conditioner indoor unit, comprising: include: The outer casing is provided with an indoor air outlet, an indoor air return outlet, an outdoor air outlet, and an outdoor air inlet; The total heat exchange core is provided with an exhaust heat exchange channel and a fresh air heat exchange channel, which conduct heat to each other; an exhaust channel is formed in the outer shell between the indoor return air vent, the exhaust heat exchange channel, and the outdoor air outlet, and a fresh air channel is formed in the outer shell between the outdoor air inlet, the fresh air heat exchange channel, and the indoor air outlet; 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; A damper, configured to selectively connect the indoor air outlet and the indoor return air outlet; An air inlet valve is disposed at the outdoor air inlet and configured to adjust the opening degree of the outdoor air inlet. Control component, the control component includes: A first temperature detection component is configured to detect the exhaust temperature value at the outdoor air outlet. A control unit configured to adjust the opening of the damper and / or the opening of the air inlet valve and / or the rotational speed of the fan assembly based on the exhaust temperature value detected by the first temperature detection unit, until the exhaust temperature value detected by the first temperature detection unit is not less than a set exhaust temperature value. 2.The indoor unit of the air conditioner according to claim 1, wherein The control component is configured to increase the opening of the damper and decrease the opening of the inlet valve based on the exhaust temperature value detected by the first temperature detection component, until the exhaust temperature value detected by the first temperature detection component is not less than the set exhaust temperature value. 3.The indoor unit of the air conditioner according to claim 1, wherein The control component is configured to adjust the opening of the damper and / or the rotational speed of the fan assembly based on the exhaust temperature value detected by the first temperature detection component, until the exhaust temperature value detected by the first temperature detection component is not less than the set exhaust temperature value. 4.The indoor unit of the air conditioner according to claim 1, wherein The control component is configured to maintain the opening of the damper and the wind speed of the two fan assemblies unchanged when the exhaust temperature value detected by the first temperature detection component is not less than the set exhaust temperature value. The control component is further configured to increase the opening of the damper and / or decrease the rotational speed of the fan assembly in the fresh air duct when the exhaust temperature value detected by the first temperature detection component is less than the set exhaust temperature value, until the exhaust temperature value detected by the first temperature detection component is not less than the set exhaust temperature value. 5.The indoor unit of the air conditioner according to claim 1 or 2, wherein The control unit is configured to: When the exhaust temperature detected by the first temperature detection component is lower than the set exhaust temperature, the opening of the air inlet valve at the outdoor air inlet is reduced, and the rotation speed of the fan assembly in the fresh air duct is also adjusted to maintain a stable air volume in the fresh air duct.

6. The indoor unit of the air conditioner according to claim 5, wherein, The control unit is configured to: The estimated target rotation speed of the fan assembly in the fresh air duct is determined based on the preset constant air volume performance curve; Control the fan assembly in the fresh air duct to operate at the estimated target speed, and determine whether the actual power at this time is equal to the constant air volume power; If not, adjust the estimated target rotation speed until the actual power equals the constant air volume power; If so, maintain the estimated target rotational speed; The constant air volume power is determined based on the constant air volume performance curve.

7. The air conditioning indoor unit according to any one of claims 1-6, wherein, The control unit is configured to: When the exhaust temperature detected by the first temperature detection component is lower than the set exhaust temperature value, the rotation speed of the fan assembly in the exhaust channel is reduced until the exhaust temperature detected by the first temperature detection component is not lower than the set exhaust temperature value.

8. The indoor unit of the air conditioner according to claim 7, wherein, Also includes: An exhaust valve is disposed at the outdoor air outlet and configured to adjust the opening degree of the outdoor air outlet. The control unit is configured to: When the exhaust temperature detected by the first temperature detection component is lower than the set exhaust temperature, the opening of the exhaust valve is reduced.

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