Air conditioner indoor unit and air conditioner

Abstract

The present application provides an air conditioner indoor unit and an air conditioner, the air conditioner indoor unit includes a shell and an evaporator; the shell is provided with a first air duct, a second air duct, a first air inlet, a first air supply port, a second air inlet and a transfer air duct assembly; the first air duct is connected to the first air inlet and the first air supply port; the second air duct is connected to the second air inlet and the transfer air duct assembly; the transfer air duct assembly is arranged in the first air duct and is located on the air inlet side of the evaporator; in a first state, the transfer air duct assembly takes in air from the second air duct and guides the airflow of the second air duct to a preset air outlet position; in a second state, part of the indoor return air from the first air inlet can pass through the transfer air duct assembly. The air conditioner indoor unit of the present application, when purification, fresh air and other functions are required, the transfer air duct assembly can be placed in the first state; when the transfer air duct assembly is placed in the second state, since part of the indoor return air can pass through the transfer air duct assembly, the transfer air duct assembly hardly affects the heat exchange efficiency of the evaporator.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioning indoor unit and an air conditioner. Background Art

[0002] In the related art, the indoor unit of the air conditioner is equipped with a fresh air duct, which introduces fresh air into the main air duct, performs heat exchange on the fresh air through the evaporator, and the fresh air after heat exchange is sent out from the air outlet of the main air duct. In this way, the temperature difference between the sent fresh air and the room temperature is not large, which improves the user experience. However, in this solution, the fresh air duct will affect the air volume of the main air duct, reducing the airflow heat exchange efficiency of the main air duct during cooling and heating. Summary of the invention

[0003] In view of this, the embodiments of the present application hope to provide an air-conditioning indoor unit and an air conditioner that have less impact on the heat exchange efficiency of the evaporator.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application provides an air-conditioning indoor unit, including a shell and an evaporator; the shell is provided with a first air duct, a second air duct, a first air inlet, a first air supply outlet, a second air inlet and a transfer duct assembly; the first air duct connects the first air inlet and the first air supply outlet; the second air duct connects the second air inlet and the transfer duct assembly; the evaporator is arranged in the first air duct, and the transfer duct assembly is arranged in the first air duct and is located on the air inlet side of the evaporator; the transfer duct assembly includes a first state and a second state, in the first state, the transfer duct assembly takes in air from the second air duct and guides the airflow of the second air duct to a preset air outlet position; in the second state, part of the indoor return air from the first air inlet can pass through the transfer duct assembly.

[0005] In some embodiments, a first air outlet is provided on a side of the transition air duct assembly facing the evaporator, and the airflow in the transition air duct assembly can be discharged from the first air outlet and flow toward the evaporator.

[0006] In some embodiments, the shell is provided with a second air supply port, and the adapter air duct assembly is provided with a second air outlet connected to the second air supply port. In the first state, the adapter air duct assembly can selectively discharge the airflow from the second air duct from the first air outlet or from the second air outlet.

[0007] In some embodiments, a first air inlet is provided on one side of the transfer air duct assembly close to the first air inlet, and the first air inlet and the first air outlet are located on a flow path of indoor return air from the first air inlet.

[0008] In some embodiments, the air conditioner indoor unit includes a first mode, a second mode, and a third mode;

[0009] In the first mode, the first air outlet is opened, the second air outlet and the first air inlet are closed, and the air flow from the second air duct flows to the evaporator through the first air outlet and is delivered from the first air supply port;

[0010] In the second mode, the second air outlet is opened, the first air outlet and the first air inlet are closed, and the airflow from the second air duct flows through the second air outlet to the second air supply outlet and is delivered from the second air supply outlet;

[0011] In the third mode, the second air outlet is closed, the first air outlet and the first air inlet are both opened, the indoor return air from the first air inlet enters the transfer air duct assembly through the first air inlet, and flows to the evaporator through the first air outlet.

[0012] In some embodiments, the air conditioner indoor unit includes an air supply mechanism arranged in the second air duct. In the third mode, the air supply mechanism is in a non-working state, and the wind resistance of the transfer air duct assembly entering the air from the second air duct is greater than the wind resistance of the air entering from the first air inlet.

[0013] In some embodiments, the air-conditioning indoor unit includes an air supply mechanism disposed in the second air duct, and the air-conditioning indoor unit includes a fourth mode; in the fourth mode, the second air outlet is closed, the first air outlet and the first air inlet are both opened, the air supply mechanism is in a working state, and the wind resistance of the transfer air duct assembly entering the air from the second air duct is less than the wind resistance of the air entering the air from the first air inlet.

[0014] In some embodiments, the adapter air duct assembly includes an air duct main body and a valve assembly movably disposed on the air duct main body, the first air duct and the second air duct are arranged along the length direction of the shell, and the air duct main body extends along the length direction of the shell; the first air outlet is disposed on the rear side of the air duct main body, the first air inlet is disposed on the top side of the air duct main body, and the second air outlet is disposed on the front side of the air duct main body, and the second air outlet is aligned with the second air supply outlet to discharge air; the valve assembly can move relative to the air duct main body to selectively close the first air inlet, the first air outlet or the second air outlet.

[0015] In some embodiments, the air duct main body includes a top frame plate, a first frame plate resting on the evaporator, and a second frame plate arranged on the front side of the first frame plate, the lower end of the first frame plate is connected to the lower end of the second frame plate, the valve assembly includes a first valve plate and a second valve plate, the lower end of the first valve plate is rotatably connected to the connection between the first frame plate and the second frame plate, the first valve plate can be selectively superimposed on the inner surface of the first frame plate or on the inner surface of the second frame plate, and the second valve plate is arranged at the first air inlet to selectively open or close the first air inlet.

[0016] In some embodiments, the front end of the second valve plate is rotatably connected to the air duct body, and the second valve plate can be rotated to abut against the inner surface of the second frame plate and open the first air inlet.

[0017] In some embodiments, the second air inlet is a fresh air inlet; or, the second air inlet is an indoor purified return air inlet.

[0018] In some embodiments, there are multiple second air inlets, at least one of which is a fresh air inlet, and at least another of which is an indoor purified return air inlet; the second air duct can selectively take in air from the fresh air inlet and / or the indoor purified return air inlet.

[0019] In some embodiments, the shell includes a chassis, a face frame assembly and a panel, the chassis and the face frame assembly are interlocked, the first air inlet is arranged on the top side of the face frame assembly, and the adapter air duct assembly is arranged between the front side of the evaporator and the rear side of the face frame assembly, and in the second state, part of the indoor return air from the first air inlet passes through the adapter air duct assembly from top to bottom.

[0020] In some embodiments, the evaporator includes a rear steam, a middle steam and a front steam connected in sequence, and the middle steam is tilted downward along the direction from the back to the front of the air-conditioning indoor unit; the transfer air duct assembly is against the front side of the middle steam, and the indoor return air passing through the transfer air duct assembly can flow to the middle steam and the front steam.

[0021] In some embodiments, the evaporator is provided with refrigerant tube ends at opposite ends along the length direction, and the adapter air duct assembly is detachably connected to the refrigerant tube ends.

[0022] In some embodiments, an elastic clip is provided on the side of the adapter air duct assembly facing the evaporator, and the elastic clip is provided with a connected slot and an opening. When the refrigerant tube end is inserted into the slot, the opening can be restorably opened by the refrigerant tube end.

[0023] An embodiment of the present application provides an air conditioner, comprising an air conditioner outdoor unit and any one of the above-mentioned air conditioner indoor units, wherein the air conditioner outdoor unit and the air conditioner indoor unit are connected via a refrigerant pipe.

[0024] In the indoor unit of the air conditioner of the embodiment of the present application, the airflow in the second air duct can be outdoor fresh air, indoor purified airflow, etc. When the user needs functions such as purification and fresh air, the switching air duct assembly can be placed in the first state, and the airflow from the second air duct flows into the room; when the user needs to cool or heat the room, the switching air duct assembly can be placed in the second state, and the indoor return air exchanges heat with the evaporator during the process of flowing through the first air duct, and is sent out from the first air supply port. Since part of the indoor return air from the first air inlet can pass through the switching air duct assembly, the switching air duct assembly will not block the indoor return air from flowing to the evaporator. Therefore, the switching air duct assembly has almost no effect on the contact area between the evaporator and the indoor return air, and has almost no effect on the heat exchange efficiency of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of an air-conditioning indoor unit according to an embodiment of the present application, wherein the panel is omitted;

[0026] Figure 2 for Figure 1 A schematic diagram of another view of the structure shown;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure shown in another perspective;

[0028] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0029] Figure 5 For along Figure 2 A cross-sectional view along the AA direction, wherein the second air outlet is open, the first air outlet and the first air inlet are closed, and arrows and dotted lines indicate air flow paths;

[0030] Figure 6 for Figure 5 A schematic diagram of the structure in another state, wherein the first air outlet is open, the second air outlet and the first air inlet are closed, and arrows and dotted lines indicate air flow paths;

[0031] Figure 7 for Figure 6 A schematic diagram of the structure in another state, wherein the first air outlet and the first air inlet are open, the second air outlet is closed, the air supply mechanism is in a non-operating state, and arrows and dotted lines indicate air flow paths;

[0032] Figure 8 for Figure 7In the illustrated structure, a schematic diagram of the air supply mechanism in a working state, with arrows and dotted lines indicating the air flow path;

[0033] Fig. 9 This is a schematic diagram of the structure of a transfer air duct assembly according to an embodiment of the present application;

[0034] Fig.10 for Fig. 9 An exploded view of the structure shown;

[0035] Fig.11 for Fig. 9 A schematic diagram of another view of the structure shown, wherein the valve assembly is omitted;

[0036] Fig.12 for Fig.11 A partial enlarged schematic diagram of point C in the middle.

[0037] Description of Reference Numerals

[0038] Shell 1; chassis 11; volute 111; face frame assembly 12; first air duct 101; first air inlet 103; first air supply 104; second air supply 105; fresh air inlet 106′; indoor purified return air vent 106″; transfer air duct assembly 14; first air outlet 14a; second air outlet 14b; first air inlet 14c; second air inlet 14d; air duct body 141; first frame plate 1411; second frame plate 1412; top frame plate 1413; valve assembly 142; first valve plate 1421; second valve plate 1422; elastic buckle 143; card slot 143a; opening 143b; first motor 151; second motor 152; wind wheel 2; evaporator 3; rear steam 31; middle steam 32; front steam 33; refrigerant pipe end 3a; purification module 41; first filter module 42; second filter module 43 DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0040] In the description of the embodiments of the present application, the orientations or positional relationships of “up”, “down”, “left”, “right”, “front”, “back”, and “length direction” are based on the orientations or positional relationships shown in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] An indoor unit of an air conditioner, see Figure 1 , Figure 2, Figure 3 , Figures 5 to 8 , comprising a housing 1 and an evaporator 3. The housing 1 is provided with a first air duct 101, a second air duct, a first air inlet 103, a first air supply port 104, a second air inlet and a switching air duct assembly 14; the first air duct 101 is connected with the first air inlet 103 and the first air supply port 104; the second air duct is connected with the second air inlet and the switching air duct assembly 14, that is, the second air duct discharges air through the switching air duct assembly 14.

[0042] See also Figures 5 to 8 , the evaporator 3 is arranged in the first air duct 101. Specifically, the evaporator 3 is used to perform heat exchange on the airflow in the first air duct 101. When the evaporator 3 is cooling, cold air is sent out from the first air outlet 104. When the evaporator 3 is heating, hot air is sent out from the first air outlet 104. It is understandable that the evaporator 3 can have only cooling function, or only heating function, or both heating function and cooling function. The user can choose heating or cooling according to actual use needs.

[0043] The switching air duct assembly 14 is disposed in the first air duct 101 and is located at the air inlet side of the evaporator 3. The switching air duct assembly 14 includes a first state and a second state. In the first state, refer to Figure 5 and Figure 6 The switching air duct assembly 14 is constructed as an air guide structure, the switching air duct assembly 14 takes in air from the second air duct and guides the airflow of the second air duct to the preset air outlet position; in the second state, please refer to Figure 7 The switching air duct assembly 14 is constructed as a ventilation structure, and part of the indoor return air from the first air inlet 103 can pass through the switching air duct assembly 14.

[0044] In the indoor unit of the air conditioner of the embodiment of the present application, the airflow in the second air duct can be outdoor fresh air, indoor purified airflow, etc. When the user needs functions such as purification and fresh air, the switching air duct assembly 14 can be placed in the first state, and the airflow from the second air duct flows to the indoor room; when the user needs to cool or heat the indoor room, the switching air duct assembly 14 can be placed in the second state, and the indoor return air exchanges heat with the evaporator 3 during the process of flowing through the first air duct 101, and is sent out from the first air supply port 104. For example, the first air duct 101 is the main air duct for the indoor unit of the air conditioner to realize the cooling and heating functions. Since part of the indoor return air from the first air inlet 103 can pass through the switching air duct assembly 14, the switching air duct assembly 14 will not block the indoor return air from flowing to the evaporator 3. Therefore, the switching air duct assembly 14 has almost no effect on the contact area between the evaporator 3 and the indoor return air, and has almost no effect on the heat exchange efficiency of the evaporator 3.

[0045] It can be understood that the indoor unit of the air conditioner is equipped with a wind wheel 2 and an air supply mechanism, the wind wheel 2 is arranged in the first air duct 101 to drive the air in the first air duct 101 to flow in a directional manner, and the evaporator 3 is arranged on the air inlet side of the wind wheel 2. The air supply mechanism is arranged in the second air duct to drive the air in the second air duct to flow in a directional manner.

[0046] It should be noted that the airflow entering the second air duct from the second air inlet may be outdoor fresh air, indoor return air, or a mixed airflow of indoor return air and outdoor fresh air.

[0047] For example, in one embodiment, the second air inlet is a fresh air inlet 106', that is, the airflow entering the second air duct from the second air inlet is outdoor fresh air. In another embodiment, the second air inlet is an indoor purified return air inlet 106", that is, the airflow entering the second air duct from the second air inlet is indoor return air. In some other embodiments, please refer to Figure 2 , the number of second air inlets is multiple, at least one second air inlet is a fresh air inlet 106′, and at least another second air inlet is an indoor purified return air inlet 106″; the second air duct can selectively take in air from the fresh air inlet 106′ and / or the indoor purified return air inlet 106″. Among them, the second air duct can selectively take in air from the fresh air inlet 106′ and / or the indoor purified return air inlet 106″, including the following three situations: the first, the second air duct only introduces outdoor fresh air from the fresh air inlet 106′; the second, the second air duct only introduces indoor return air from the indoor purified return air inlet 106″; the third, the second air duct takes in air from the fresh air inlet 106′ and the indoor purified return air inlet 106″ at the same time. At this time, the airflow in the second air duct is a mixed airflow of outdoor fresh air and indoor return air. That is to say, in this embodiment, the outdoor fresh air and the indoor purified air share the same second air duct, which can save space and make the structure of the air-conditioning indoor unit compact.

[0048] Exemplarily, in an embodiment in which an indoor purified return air outlet 106″ and a fresh air inlet 106′ are simultaneously provided, the air conditioner indoor unit may further include a first switch door provided at the fresh air inlet 106′ and a second switch door provided at the indoor purified return air outlet 106″, the first switch door selectively opening or closing the fresh air inlet 106′, and the second switch door selectively opening or closing the indoor purified return air outlet 106″. When the second air duct only needs to introduce outdoor fresh air, the first switch door opens the fresh air inlet 106′, and the second switch door closes the indoor purified return air outlet 106″; when the second air duct only needs to introduce indoor return air, the first switch door closes the fresh air inlet 106′, and the second switch door opens the indoor purified return air outlet 106″; when the second air duct needs to introduce outdoor fresh air and indoor return air in proportion, the first switch door opens the fresh air inlet 106′ and the second switch door opens the indoor purified return air outlet 106″.

[0049] For some examples, see Figure 2 A first filter module 42 is provided at the fresh air inlet 106' to intercept pollen, dust and other impurities carried by the outdoor fresh air. It should be noted that the wind resistance of the first filter module 42 is relatively low to avoid forming a large wind resistance to the outdoor fresh air.

[0050] For some examples, see Figure 2 A purification module 41 is provided at the indoor purified return air outlet 106″, and the purification module 41 is used to sterilize and disinfect the indoor return air flowing through the indoor purified return air outlet 106″. The specific type of the purification module 41 is not limited, and one or more filters with sterilization and disinfection functions for certain specific pollutants can be configured according to the actual usage scenario. For example, the purification module 41 includes a dust removal net, a formaldehyde filter net and a plasma net arranged in sequence along the air flow direction. The specific material of the dust removal net is not limited, as long as it can play a preliminary dust removal role. In addition to the function of efficiently absorbing formaldehyde, the formaldehyde filter net can also filter out other volatile organic compounds, allergens and bacteria. The plasma net sterilizes and disinfects the airflow in the form of ion emission. For another example, the purification module 41 is a HEPA net (High efficiency particulate airFilter).

[0051] For some examples, see Figures 5 to 8 A second filter module 43 is provided at the first air inlet 103, and the second filter module 43 filters the indoor return air to reduce the probability of dust and other impurities entering the first air duct 101. It should be noted that the second filter module 43 can also use a low wind resistance filter to avoid forming a large wind resistance to the air inlet of the first air duct 101.

[0052] It should be noted that, in the first state, the adapter air duct assembly 14 can direct the airflow of the second air duct to any appropriate air outlet position. For example, the airflow of the second air duct can be directly directed to the outside of the shell 1. That is to say, the airflow of the second air duct will not exchange heat with the evaporator 3. For another example, the airflow of the second air duct can be introduced into the first air duct 101 and supplied through the first air supply port 104.

[0053] For example, in some embodiments, please refer to Figures 5 to 8The first air outlet 14a is provided on the side of the transfer air duct assembly 14 facing the evaporator 3, and the airflow in the transfer air duct assembly 14 can be discharged from the first air outlet 14a and flow to the evaporator 3. There are two ways in which the airflow in the transfer air duct assembly 14 can be discharged from the first air outlet 14a and flow to the evaporator 3. The first way is that when the transfer air duct assembly 14 takes in air from the first air inlet 103, the indoor return air entering the transfer air duct assembly 14 passes through the transfer air duct assembly 14 from the first air outlet 14a and flows to the evaporator 3; the second way is that when the transfer air duct assembly 14 takes in air from the second air duct, the airflow from the second air duct is discharged from the first air outlet 14a and flows to the evaporator 3.

[0054] In this embodiment, the preset air outlet position includes the first air outlet 14a, and the first air duct 101 and the second air duct can supply air through the first air supply port 104. In this embodiment, the airflow from the second air duct flows through the evaporator 3 and supplies air through the first air supply port 104, so that the airflow can be close to the room temperature, improving the user experience.

[0055] Exemplarily, a plasma module may be disposed in the second air duct, and plasma emitted by the plasma module may enter the first air duct 101 along with the air flow, thereby sterilizing and disinfecting the first air duct 101 .

[0056] For example, in some embodiments, the housing 1 is provided with a second air supply port 105, and the adapter air duct assembly 14 is provided with a second air outlet 14b connected to the second air supply port 105. In the first state, the adapter air duct assembly 14 can selectively discharge the airflow of the second air duct from the first air outlet 14a or from the second air outlet 14b. That is, when the adapter air duct assembly 14 is in the first state, there are two preset air outlet positions of the adapter air duct assembly 14, one is the first air outlet 14a, and the other is the second air outlet 14b. In this way, the indoor air conditioner has two different air outlet modes. Please refer to Figure 6 When the switching air duct assembly 14 discharges the airflow of the second air duct from the first air outlet 14a, the airflow from the second air duct will flow to the evaporator 3 through the first air outlet 14a and be delivered from the first air delivery port 104. At this time, the temperature of the delivered airflow is close to the room temperature. Figure 5 When the switching air duct assembly 14 discharges the airflow of the second air duct from the second air outlet 14b, the airflow from the second air duct will be delivered through the second air outlet 14b and the second air supply port 105 in sequence. At this time, the delivered airflow will not flow through the evaporator 3 and will not affect the temperature of the indoor air.

[0057] In some embodiments, the first air inlet 14c is provided on one side of the transfer air duct assembly 14 close to the first air inlet 103, and the second air inlet 14d is further provided at the end of the transfer air duct assembly 14 close to the second air duct, and the second air inlet 14d is connected to the end of the second air duct. The first air inlet 14c and the first air outlet 14a are located on the flow path of the indoor return air from the first air inlet 103. That is to say, when the transfer air duct assembly 14 is in the second state, the indoor return air can almost pass through the transfer air duct assembly 14 along the original path to minimize the impact on the flow performance of the indoor return air.

[0058] Exemplarily, the air conditioner indoor unit includes a first mode, a second mode and a third mode.

[0059] In the first mode, see Figure 6 , the first air outlet 14a is opened, the second air outlet 14b and the first air inlet 14c are both closed. In this mode, the switching air duct assembly 14 is in the first state, and the air flow from the second air duct flows through the first air outlet 14a to the evaporator 3 and is delivered from the first air supply port 104.

[0060] In the second mode, see Figure 5 , the second air outlet 14b is opened, the first air outlet 14a and the first air inlet 14c are both closed. In this mode, the switching air duct assembly 14 is in the first state, and the air flow from the second air duct flows through the second air outlet 14b to the second air supply port 105 and is delivered from the second air supply port 105;

[0061] In the third mode, see Figure 7 , the second air outlet 14b is closed, the first air outlet 14a and the first air inlet 14c are both opened. In this mode, the switching air duct assembly 14 is in the second state, and the indoor return air from the first air inlet 103 enters the switching air duct assembly 14 through the first air inlet 14c, and flows to the evaporator 3 through the first air outlet 14a.

[0062] It should be noted that the second air inlet 14d can remain open, or a switch door can be provided at the second air inlet 14d to selectively open or close the second air inlet 14d. In the embodiment of the present application, the second air inlet 14d is in an open state, which can simplify the structure and control.

[0063] When the adapter air duct assembly 14 is in the second state, in order to facilitate the adapter air duct assembly 14 to take in air from the first air inlet 103, in the above-mentioned third mode, the air supply mechanism is in a non-working state, that is, the air pressure in the second air duct is atmospheric pressure, and the wind resistance of the adapter air duct assembly 14 taking in air from the second air duct is greater than the wind resistance of taking in air from the first air inlet 103. For example, the wind resistance of the purification module 41 and the wind resistance of the first filter module 42 are both greater than the wind resistance of the second filter module 43. Under the negative pressure of the wind wheel 2, the adapter air duct assembly 14 will take in air from the first air inlet 103, and basically will not take in air from the second air duct.

[0064] In some embodiments, the air conditioner indoor unit includes a fourth mode, see Figure 8 In the fourth mode, the second air outlet 14b is closed, and the first air outlet 14a and the first air inlet 14c are both opened, that is, the transfer air duct assembly 14 is in the second state, the air supply mechanism is in the working state, and the wind resistance of the transfer air duct assembly 14 from the second air duct is less than the wind resistance of the air from the first air inlet 103. It should be noted that when the air supply mechanism is in the working state, the air pressure in the second air duct located at the air outlet side of the air supply mechanism is positive pressure, and the air supply mechanism sends the airflow in the second air duct into the transfer air duct assembly 14. Under the action of the wind wheel 2, the airflow entering the transfer air duct assembly 14 will not be discharged from the first air inlet 14c, but will only be discharged from the first air outlet 14a.

[0065] For some examples, see Figures 5 to 8 The housing 1 includes a chassis 11, a face frame assembly 12 and a panel. The chassis 11 and the face frame assembly 12 are buckled together to form an installation space. The chassis 11 is provided with a volute 111. The wind wheel 2 is rotatably arranged in the volute 111. The evaporator 3 is covered on the air inlet side of the volute 111. The air outlet end of the volute 111 forms a first air outlet 104. The chassis 11 is a structural force-bearing member of the indoor unit of the air conditioner. For example, the indoor unit of the air conditioner is hung on the wall through the chassis 11. The chassis 11 bears the weight of the face frame assembly 12, the panel, the wind wheel 2, the air supply mechanism, the electric control box and other components.

[0066] The first air inlet 103 is arranged on the top side of the face frame assembly 12, and the transfer duct assembly 14 is arranged between the front side of the evaporator 3 and the rear side of the face frame assembly 12. In the second state, part of the indoor return air from the first air inlet 103 passes through the transfer duct assembly 14 from top to bottom. In this embodiment, the transfer duct assembly 14 is arranged on the front side of the evaporator 3, making full use of the space on the front side of the evaporator 3, without changing the structural design of the first duct 101, and also facilitating the airflow of the second duct to be directed to the evaporator 3.

[0067] For some examples, see Figures 5 to 8The evaporator 3 includes a rear steamer 31, a middle steamer 32 and a front steamer 33 connected in sequence. Specifically, along the direction from the back to the front of the air conditioner indoor unit, the rear steamer 31 is arranged obliquely upward, the middle steamer 32 is arranged obliquely downward, and the front steamer 33 is connected to the bottom end of the middle steamer 32. The rear steamer 31, the middle steamer 32 and the front steamer 33 generally form an inverted V-shaped structure and are inverted above the volute 111.

[0068] The transfer duct assembly 14 is against the front side of the middle steamer 32, and the indoor return air passing through the transfer duct assembly 14 can flow to the middle steamer 32 and the front steamer 33, that is, the transfer duct assembly 14 does not affect the heat exchange efficiency of the middle steamer 32 and the front steamer 33 for the indoor return air. Since the middle steamer 32 is arranged obliquely downward, the space between the middle steamer 32 and the face frame assembly 12 is in the form of being larger at the top and smaller at the bottom, and the transfer duct assembly 14 is wedged into the space between the middle steamer 32 and the face frame assembly 12, and the middle steamer 32 can play a certain supporting role for the transfer duct assembly 14, that is, the weight of the transfer duct assembly 14 can be borne by the middle steamer 32.

[0069] It is understandable that the adapter air duct assembly 14 can be connected to the face frame assembly 12 , or the adapter air duct assembly 14 can also be connected to the evaporator 3 , or both the face frame assembly 12 and the evaporator 3 can be connected to the adapter air duct assembly 14 .

[0070] For example, see Figure 4 The evaporator 3 is provided with refrigerant pipe end heads 3a at opposite ends along the length direction, and the adapter air duct assembly 14 is detachably connected to the refrigerant pipe end heads 3a. In this way, the existing structure of the evaporator 3 can be fully utilized to install the adapter air duct assembly 14.

[0071] The specific connection method between the transfer air duct assembly 14 and the refrigerant pipe end 3a is not limited, as long as it is easy to install and disassemble. Figures 10 to 12 The side of the transfer air duct assembly 14 facing the evaporator 3 is provided with an elastic buckle 143, and the elastic buckle 143 has a slot 143a and an opening 143b. When the refrigerant tube end 3a is inserted into the slot 143a, the opening 143b can be restored to be opened by the refrigerant tube end 3a. Specifically, during the assembly process, the slot 143a of the transfer air duct assembly 14 is aligned with the refrigerant tube end 3a and buckled on the refrigerant tube end 3a. When the refrigerant tube end 3a is inserted into the slot 143a, the refrigerant tube end 3a forces the elastic buckle 143 to undergo elastic deformation and expand the opening 143b. After the refrigerant tube end 3a is inserted into the slot 143a, the elastic buckle 143 partially or completely recovers the elastic deformation, and the opening 143b is reduced to restrict the refrigerant tube end 3a in the slot 143a. When the adapter air duct assembly 14 needs to be disassembled, it is only necessary to pull the adapter air duct assembly 14 with force to separate the elastic buckle 143 from the refrigerant pipe end 3a.

[0072] The specific structure of the transfer air duct assembly 14 is not limited, for example, please refer to Fig.10 The adapter air duct assembly 14 includes an air duct body 141 and a valve assembly 142 movably arranged on the air duct body 141. The first air duct 101 and the second air duct are arranged along the length direction of the shell 1. The air duct body 141 extends along the length direction of the shell 1. The size of the first air outlet 14a along the length direction of the shell 1 is roughly equivalent to the length of the evaporator 3, so as to increase the heat exchange area between the airflow in the adapter air duct assembly 14 and the evaporator 3, improve the heat exchange efficiency, and make full use of the space on the front side of the evaporator 3.

[0073] See also Fig.11 The air duct body 141 is provided with a first air outlet 14a at the rear side, a first air inlet 14c at the top side, and a second air outlet 14b at the front side, and the second air outlet 14b is aligned with the second air supply port 105 to discharge air; the valve assembly 142 can move relative to the air duct body 141 to selectively close the first air inlet 14c, the first air outlet 14a or the second air outlet 14b. In this embodiment, the air duct body 141 remains stationary, and the switching of the airflow direction is achieved by the movement of the valve assembly 142.

[0074] The specific structural form of the air duct body 141 is not limited. For example, in some embodiments, please refer to Fig.10 and Fig.11 The air duct body 141 includes a top frame plate 1413, a first frame plate 1411 resting on the evaporator 3, and a second frame plate 1412 disposed in front of the first frame plate 1411, and the lower end of the first frame plate 1411 is connected to the lower end of the second frame plate 1412. The first frame plate 1411, the second frame plate 1412 and the top frame plate 1413 generally form a triangular structure. Among them, the gap on the first frame plate 1411 forms the first air outlet 14a, the gap on the second frame plate 1412 forms the second air outlet 14b, and the gap on the top frame plate 1413 forms the first air inlet 14c.

[0075] The valve assembly 142 includes a first valve plate 1421 and a second valve plate 1422. The lower end of the first valve plate 1421 is rotatably connected to the connection between the first frame plate 1411 and the second frame plate 1412. The first valve plate 1421 can be selectively superimposed on the inner surface of the first frame plate 1411 or the inner surface of the second frame plate 1412. In other words, the opening and closing of the first air outlet 14a and the second air outlet 14b are controlled by the first valve plate 1421. Therefore, at the same time, at most only one of the first air outlet 14a or the second air outlet 14b is closed, and both of them will not be in a closed state at the same time. The second valve plate 1422 is arranged at the first air inlet 14c to selectively open or close the first air inlet 14c.

[0076] In some embodiments, the front end of the second valve plate 1422 is rotatably connected to the air duct body 141, see Figure 7 and Figure 8 , the second valve plate 1422 can rotate to abut against the inner surface of the second frame plate 1412 and open the first air inlet 14c. In this embodiment, when the second valve plate 1422 opens the first air inlet 14c, the second valve plate 1422 will basically not affect the flow area of ​​the first air inlet 14c, and will basically not affect the flow area of ​​the first air outlet 14a, and the indoor return air from the first air inlet 103 can pass through the top frame plate 1413 and the first frame plate 1411 more smoothly.

[0077] It should be noted that the first frame plate 1411, the second frame plate 1412 and the top frame plate 1413 may be split structures and assembled together, for example, by snap-fitting; or any two of them may be integrally formed structures, for example, integrally injection molded.

[0078] The driving method of the first valve plate 1421 is not limited. For example, please refer to Figures 9 to 11 The air conditioner indoor unit includes a first motor 151 , and a motor shaft of the first motor 151 is rotatably connected to the first valve plate 1421 .

[0079] The driving method of the second valve plate 1422 is not limited. For example, please refer to Figures 9 to 11 The air conditioner indoor unit includes a second motor 152 , and a motor shaft of the second motor 152 is rotatably connected to the second valve plate 1422 .

[0080] In the embodiment having the first motor 151 and the second motor 152 , the first motor 151 and the second motor 152 may be disposed at opposite ends of the air duct body 141 along the length direction to prevent the first motor 151 and the second motor 152 from interfering with each other.

[0081] An embodiment of the present application provides an air conditioner, comprising an air conditioner outdoor unit and an air conditioner indoor unit of any of the above embodiments, wherein the air conditioner outdoor unit and the air conditioner indoor unit are connected via a refrigerant pipe.

[0082] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0083] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air conditioner indoor unit, characterized in that: include: A shell (1), the shell (1) being provided with a first air duct (101), a second air duct, a first air inlet (103), a first air supply port (104), a second air inlet, and a switching air duct assembly (14); the first air duct (101) being connected to the first air inlet (103) and the first air supply port (104); the second air duct being connected to the second air inlet and the switching air duct assembly (14); An evaporator (3), the evaporator (3) being arranged in the first air duct (101), and the adapter air duct component (14) being arranged in the first air duct (101) and located on the air inlet side of the evaporator (3); The transfer air duct assembly (14) comprises a first state and a second state. In the first state, the transfer air duct assembly (14) takes in air from the second air duct and directs the airflow of the second air duct to a preset air outlet position. In the second state, part of the indoor return air from the first air inlet (103) can pass through the transfer air duct assembly (14). The air conditioner indoor unit comprises a wind wheel (2), the wind wheel (2) is arranged in the first air duct (101), and the evaporator (3) is arranged on the air inlet side of the wind wheel (2).

2. The air conditioner indoor unit according to claim 1, characterized in that: A first air outlet (14a) is provided on a side of the transition air duct component (14) facing the evaporator (3), and the airflow in the transition air duct component (14) can be discharged from the first air outlet (14a) and flow toward the evaporator (3).

3. The air conditioner indoor unit according to claim 2, characterized in that: The shell (1) is provided with a second air supply port (105), and the adapter air duct assembly (14) is provided with a second air outlet (14b) connected to the second air supply port (105); in the first state, the adapter air duct assembly (14) is capable of selectively discharging the airflow from the second air duct from the first air outlet (14a) or from the second air outlet (14b).

4. The air conditioner indoor unit according to claim 3, characterized in that: A first air inlet (14c) is provided on one side of the transfer air duct assembly (14) close to the first air inlet (103); the first air inlet (14c) and the first air outlet (14a) are located on a flow path of indoor return air from the first air inlet (103).

5. The air conditioner indoor unit according to claim 4, characterized in that: The air conditioner indoor unit includes a first mode, a second mode and a third mode; In the first mode, the first air outlet (14a) is opened, the second air outlet (14b) and the first air inlet (14c) are both closed, and the airflow from the second air duct flows through the first air outlet (14a) to the evaporator (3) and is delivered from the first air supply port (104); In the second mode, the second air outlet (14b) is opened, the first air outlet (14a) and the first air inlet (14c) are both closed, and the airflow from the second air duct flows through the second air outlet (14b) to the second air supply outlet (105) and is delivered from the second air supply outlet (105); In the third mode, the second air outlet (14b) is closed, the first air outlet (14a) and the first air inlet (14c) are both opened, and the indoor return air from the first air inlet (103) enters the transfer air duct assembly (14) through the first air inlet (14c) and flows to the evaporator (3) through the first air outlet (14a).

6. The air conditioner indoor unit according to claim 5, characterized in that: The air conditioner indoor unit comprises an air supply mechanism arranged in the second air duct. In the third mode, the air supply mechanism is in a non-operating state, and the wind resistance of the switching air duct component (14) for air entering from the second air duct is greater than the wind resistance for air entering from the first air inlet (103).

7. The air conditioner indoor unit according to claim 5, characterized in that: The air conditioner indoor unit comprises an air supply mechanism arranged in the second air duct, and the air conditioner indoor unit comprises a fourth mode; in the fourth mode, the second air outlet (14b) is closed, the first air outlet (14a) and the first air inlet (14c) are both opened, the air supply mechanism is in a working state, and the wind resistance of the transfer air duct component (14) entering from the second air duct is smaller than the wind resistance of the air entering from the first air inlet (103).

8. The air conditioner indoor unit according to claim 4, characterized in that: The adapter air duct assembly (14) comprises an air duct body (141) and a valve assembly (142) movably arranged on the air duct body (141); the first air duct (101) and the second air duct are arranged along the length direction of the shell (1); the air duct body (141) extends along the length direction of the shell (1); the first air outlet (14a) is arranged on the rear side of the air duct body (141); the first air inlet (14c) is arranged on the top side of the air duct body (141); the second air outlet (14b) is arranged on the front side of the air duct body (141); the second air outlet (14b) is aligned with the second air supply port (105) for air discharge; the valve assembly (142) can move relative to the air duct body (141) to selectively close the first air inlet (14c), the first air outlet (14a) or the second air outlet (14b).

9. The air conditioner indoor unit according to claim 8, characterized in that: The air duct body (141) comprises a top frame plate (1413), a first frame plate (1411) resting against the evaporator (3), and a second frame plate (1412) arranged on the front side of the first frame plate (1411), the lower end of the first frame plate (1411) and the lower end of the second frame plate (1412) are connected, the valve assembly (142) comprises a first valve plate (1421) and a second valve plate (1422), the lower end of the first valve plate (1421) is rotatably connected to the connection between the first frame plate (1411) and the second frame plate (1412), the first valve plate (1421) can be selectively superimposed on the inner surface of the first frame plate (1411) or on the inner surface of the second frame plate (1412), and the second valve plate (1422) is arranged at the first air inlet (14c) to selectively open or close the first air inlet (14c).

10. The air conditioner indoor unit according to claim 9, characterized in that: The front end of the second valve plate (1422) is rotatably connected to the air duct body (141), and the second valve plate (1422) can be rotated to abut against the inner surface of the second frame plate (1412) and open the first air inlet (14c).

11. The air conditioner indoor unit according to claim 1, characterized in that: The second air inlet is a fresh air inlet (106'); or, the second air inlet is an indoor purified return air outlet (106").

12. The air conditioner indoor unit according to claim 1, characterized in that: There are multiple second air inlets, at least one of which is a fresh air inlet (106'), and at least another of which is an indoor purified return air inlet (106"); the second air duct can selectively take in air from the fresh air inlet (106') and / or the indoor purified return air inlet (106").

13. The air conditioner indoor unit according to any one of claims 1 to 12, characterized in that: The shell (1) comprises a chassis (11), a face frame assembly (12) and a panel, the chassis (11) and the face frame assembly (12) being interlocked, the first air inlet (103) being arranged on the top side of the face frame assembly (12), the transfer air duct assembly (14) being arranged between the front side of the evaporator (3) and the rear side of the face frame assembly (12), and in the second state, part of the indoor return air from the first air inlet (103) passes through the transfer air duct assembly (14) from top to bottom.

14. The air conditioner indoor unit according to claim 13, characterized in that: The evaporator (3) comprises a rear steam (31), a middle steam (32) and a front steam (33) connected in sequence, and the middle steam (32) is arranged to be inclined downward along the direction from the back to the front of the air conditioner indoor unit; the transfer air duct component (14) is against the front side of the middle steam (32), and the indoor return air passing through the transfer air duct component (14) can flow to the middle steam (32) and the front steam (33).

15. The air conditioner indoor unit according to claim 13, characterized in that: The evaporator (3) is provided with refrigerant pipe end heads (3a) at two opposite ends along the length direction, and the adapter air duct assembly (14) is detachably connected to the refrigerant pipe end heads (3a).

16. The air conditioner indoor unit according to claim 15, characterized in that: The adapter air duct assembly (14) is provided with an elastic buckle (143) on the side facing the evaporator (3), and the elastic buckle is provided with a connected clamping groove (143a) and an opening (143b), and when the refrigerant tube end head (3a) is clamped into the clamping groove (143a), the opening (143b) can be restored to be opened by the refrigerant tube end head (3a).

17. An air conditioner, characterized in that: It comprises an air-conditioning outdoor unit and an air-conditioning indoor unit according to any one of claims 1 to 16, wherein the air-conditioning outdoor unit and the air-conditioning indoor unit are connected via a refrigerant pipe.

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