Air supply duct and air conditioner

Abstract

The utility model provides an air supply pipe and an air conditioner, and relates to the technical field of air conditioners. Comprising an outdoor air supply pipe at least communicated with an air supply outlet of a main machine, an outdoor air return pipe at least communicated with an air return inlet of the main machine and a conversion air pipe assembly, the air inlet end of the conversion air pipe assembly is communicated with the outdoor air supply pipe, and the air return end of the conversion air pipe assembly is communicated with the outdoor air return pipe; the conversion air pipe assembly is provided with a first connecting end capable of being communicated with the first end of the indoor air outlet pipe and a second connecting end capable of being communicated with the second end of the indoor air outlet pipe. The air conditioner supplies air into a room through the indoor air outlet pipe, is suitable for the home environment and is good in fusion effect. And moreover, the indoor air outlet pipe is good in air supply effect, and the comfort of the air conditioner can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and in particular to an air supply duct and an air conditioner. BACKGROUND

[0002] Traditional household wall-mounted air conditioners are divided into indoor units and outdoor units, but regardless of the type of model, because the indoor unit has core components such as heat exchangers, motors, and fans inside, the size of the appearance cannot be designed into a delicate and compact shape, and therefore cannot be better integrated with the home environment.

[0003] Currently, there are air conditioners that place the body outside the wall and only use air supply ducts to send gas into the target space. The air supply path of this type of air supply duct is single, and the versatility of the air supply duct is poor. CONTENT OF THE UTILITY MODEL

[0004] The present application provides an air supply duct and an air conditioner, which sends air to the indoor through the indoor air outlet duct, is suitable for the home environment, and has good integration effect. Moreover, the indoor air outlet duct has good air supply effect, which can improve the comfort of the air conditioner.

[0005] One aspect of the present application provides an air supply duct, comprising:

[0006] An outdoor air supply duct that can at least communicate with the air supply port of the main unit;

[0007] An outdoor air return duct that can at least communicate with the air return port of the main unit;

[0008] A conversion air duct assembly, the air inlet end of the conversion air duct assembly communicates with the outdoor air supply duct, and the air return end of the conversion air duct assembly communicates with the outdoor air return duct;

[0009] The conversion air duct assembly has a first connection end that can communicate with the first end of the indoor air outlet duct, and a second connection end that can communicate with the second end of the indoor air outlet duct;

[0010] When the conversion air duct assembly is in the first state, the air inlet end of the conversion air duct assembly communicates with the first connection end, and the air return end of the conversion air duct assembly communicates with the second connection end;

[0011] When the conversion air duct assembly is in the second state, the air inlet end of the conversion air duct assembly communicates with the second connection end, and the air return end of the conversion air duct assembly communicates with the first connection end.

[0012] In this way, when the air conditioner is in a cooling mode, the first end of the indoor air outlet pipe can serve as an air inlet end, and the second end of the indoor air outlet pipe serves as an air outlet end. The cold air flow of the air supply flows along the outdoor air supply pipe and the conversion air pipe assembly, and can flow to the first end of the indoor air outlet pipe through the first connecting end of the conversion air pipe assembly; the return air flow can flow into the outdoor return air pipe from the second end of the indoor air outlet pipe through the second connecting end of the conversion air pipe assembly. At this time, the indoor air outlet pipe can be set to a lower air inlet and an upper air return mode, and the overall flow direction of the cold air flow sent by the indoor air outlet pipe is a parabolic trajectory upward and outward, which can realize sky curtain cooling air supply and avoid direct blowing of cold air to the user.

[0013] When the air conditioner is in a heating mode, the second end of the indoor air outlet pipe can serve as an air inlet end, and the first end of the indoor air outlet pipe serves as an air outlet end. The cold air flow of the air supply flows along the outdoor air supply pipe and the conversion air pipe assembly, and can flow to the second end of the indoor air outlet pipe through the second connecting end of the conversion air pipe assembly; the return air flow can flow into the outdoor return air pipe from the first end of the indoor air outlet pipe through the first connecting end of the conversion air pipe assembly. At this time, the indoor air outlet pipe is in an upper air inlet and a lower air return mode, and the overall flow direction of the warm air flow sent by the indoor air outlet pipe is a parabolic trajectory downward and outward, which can realize carpet heating air supply and make the warm air quickly and directly blow to the user.

[0014] Furthermore, by arranging the conversion air pipe assembly, the air supply pipeline can have multiple air supply paths, so that the air supply pipeline can supply air to the first end of the indoor air outlet pipe and return air from the second end of the indoor air outlet pipe. The air supply pipeline can also supply air to the second end of the indoor air outlet pipe and return air from the first end of the indoor air outlet pipe, so that the function of the air supply pipeline is more abundant.

[0015] In a possible implementation, the conversion air pipe assembly comprises:

[0016] a first conversion air pipe comprising a first air inlet section, a first air return section and a first common section, the first air inlet section being in communication with the outdoor air supply pipe, the first air return section being in communication with the outdoor return air pipe, and the first common section being capable of being in communication with the first end of the indoor air outlet pipe;

[0017] a second conversion air pipe comprising a second air inlet section, a second air return section and a second common section, the second air inlet section being in communication with the outdoor air supply pipe, the second air return section being in communication with the outdoor return air pipe, and the second common section being capable of being in communication with the second end of the indoor air outlet pipe.

[0018] In a possible implementation, the conversion air pipe assembly is configured to:

[0019] when the conversion air pipe assembly is in the first state, the first common section is in communication with the first air inlet section, and the first common section is not in communication with the first air return section;

[0020] The second common section is not communicated with the second air inlet section, and the second common section is communicated with the second air return section;

[0021] When the transition air duct assembly is in the second state, the first common section is not communicated with the first air inlet section, and the first common section is communicated with the first air return section;

[0022] The second common section is communicated with the second air inlet section, and the second common section is not communicated with the second air return section.

[0023] In a possible implementation, the first transition air duct comprises a first control part;

[0024] The first control part has a first port, a second port and a third port, and the first control part can control the first port to be communicated with one of the second port and the third port;

[0025] The first port is communicated with the first common section, the second port is communicated with the first air inlet section, and the third port is communicated with the first air outlet section;

[0026] And / or, the second transition air duct comprises a second control part;

[0027] The second control part has a first port, a second port and a third port, and the second control part can control the first port to be communicated with one of the second port and the third port;

[0028] The first port is communicated with the second common section, the second port is communicated with the second air inlet section, and the third port is communicated with the second air outlet section.

[0029] In a possible implementation, the first common section is integrally formed with at least part of the first air inlet section, the first common section is provided with a first opening, and the first common section is communicated with the first air return section through the first opening;

[0030] Alternatively, the first common section is integrally formed with at least part of the first air return section, the first common section is provided with a first opening, and the first common section is communicated with the first air inlet section through the first opening.

[0031] In a possible implementation, the second common section is integrally formed with at least part of the second air inlet section, the second common section is provided with a second opening, and the second common section is communicated with the second air return section through the second opening;

[0032] Alternatively, the second common section is integrally formed with at least part of the second return air section, and the second common section is provided with a second opening, and the second common section communicates with the second air inlet section through the second opening.

[0033] In a possible implementation, the first conversion air duct is arranged below the second conversion air duct.

[0034] The outdoor air supply duct extends in a vertical direction, the outdoor air return duct extends in a vertical direction, a top end of the outdoor air supply duct communicates with the second air inlet section, and a top end of the outdoor air return duct communicates with the second return air section.

[0035] The outdoor air supply duct is provided with a first mounting opening, and the outdoor air supply duct communicates with the first air inlet section through the first mounting opening; and the outdoor air return duct is provided with a second mounting opening, and the outdoor air return duct communicates with the first return air section through the second mounting opening.

[0036] In a possible implementation, at least part of the second air inlet section extends in a vertical direction, and at least part of the second air inlet section is integrally formed with the outdoor air supply duct.

[0037] And / or, at least part of the second return air section extends in a vertical direction, and at least part of the second return air section is integrally formed with the outdoor air return duct.

[0038] In a possible implementation, a cross-sectional shape of the conversion air duct assembly is square.

[0039] In a possible implementation, the first connecting end is provided with a first wall-penetrating section, and the first wall-penetrating section is used to penetrate through a wall and communicate with the first end of the indoor air outlet duct.

[0040] And / or, the second connecting end is provided with a second wall-penetrating section, and the second wall-penetrating section is used to penetrate through a wall and communicate with the second end of the indoor air outlet duct.

[0041] Another aspect of the present application provides an air conditioner, comprising the air supply duct according to any one of the above. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description can also be obtained by those of ordinary skill in the art without any creative effort, and other drawings can also be obtained according to these drawings.

[0043] Figure 1A structure schematic view of one perspective of the air conditioner provided by the embodiment of the present application;

[0044] Figure 2 A structure schematic view of another perspective of the air conditioner in Figure 1 ;

[0045] Figure 3 A structure schematic view of the main machine in the air conditioner provided by the embodiment of the present application;

[0046] Figure 4 A structure schematic view of the main machine in Figure 3 ;

[0047] Figure 5 A structure schematic view of the main machine in Figure 4 after removing the front cover;

[0048] Figure 6 A structure schematic view of the air conditioner provided by the embodiment of the present application after removing the main machine;

[0049] Figure 7 A structure schematic view of the indoor air outlet pipe in the air conditioner provided by the embodiment of the present application;

[0050] Figure 8 A structure schematic view of the air outlet pipe section of the indoor air outlet pipe in Figure 7 ;

[0051] Figure 9 A cross-sectional schematic view of the air outlet pipe section in Figure 8 .

[0052] Explanation of reference signs:

[0053] 10 - main machine;

[0054] 11 - machine shell; 12 - evaporator; 13 - condenser; 14 - compressor; 15 - fan; 16 - radiator;

[0055] 111 - main shell; 112 - front cover; 113 - air supply port; 114 - air return port; 115 - air inlet; 116 - air outlet; 117 - first partition plate; 118 - second partition plate; 119 - air guide plate;

[0056] 1111 - first accommodating cavity; 1112 - second accommodating cavity; 1113 - first sub-cavity; 1114 - second sub-cavity; 1121 - support plate; 1122 - cover plate; 1191 - air guide channel; 1192 - air guide hole;

[0057] 11221 - grating;

[0058] 20 - outdoor air supply pipe;

[0059] 30 - indoor air outlet pipe; 30a - air inlet end; 30b - air return end;

[0060] 31 - air outlet pipe section; 32 - decorative pipe section;

[0061] 100 - pipe shell; 200 - first flexible air plate; 300 - second flexible air plate; 400 - partition plate;

[0062] 101 - air outlet air duct; 110 - side plate; 120 - face plate; 210 - first flexible air hole; 310 - second flexible air hole; 410 - air vent; 420 - blocking part;

[0063] 121 - decorative part; 122 - first air outlet part; 123 - second air outlet part; 124 - connecting plate;

[0064] 1221 - first air outlet hole; 1231 - second air outlet hole;

[0065] 40 - outdoor air return pipe; 50 - first conversion air pipe; 60 - second conversion air pipe;

[0066] 51 - lower main pipe; 52 - first lower branch pipe; 53 - second lower branch pipe; 61 - upper main pipe; 62 - first upper branch pipe; 63 - second upper branch pipe. DETAILED DESCRIPTION

[0067] As described in the background, conventional household wall-mounted air conditioners are divided into indoor units and outdoor units, but regardless of the type of model, because the indoor unit has core components such as heat exchangers, motors, and fans inside, the external dimensions cannot be designed into a delicate and compact shape, so they cannot be well integrated with the home environment.

[0068] Currently, there are air conditioners that place the machine body outside the wall and only use the air supply pipe to send gas into the target space. The air supply path of this type of air supply pipe is single, and the air supply pipe has poor versatility.

[0069] Therefore, the present application provides an air supply pipe and an air conditioner. The main machine of the air conditioner is installed outdoors and sends air to the indoor through an indoor air outlet pipe. The indoor air outlet pipe is small in size and can be arranged along the indoor wall, and is integrated with the indoor space. Moreover, since only the indoor air outlet pipe is installed indoors, without components such as compressors, fans, and motors, the indoor noise generated by the air conditioner during air supply is small, which can improve the use effect of the air conditioner.

[0070] When the air conditioner is in a cooling mode, the first end of the indoor air outlet pipe can serve as an air inlet end, and the second end of the indoor air outlet pipe serves as an air outlet end. The cold air flow of the air supply flows along the outdoor air supply pipe and the conversion air pipe assembly, and can flow to the first end of the indoor air outlet pipe through the first connecting end of the conversion air pipe assembly; the return air flow can flow into the outdoor return air pipe from the second end of the indoor air outlet pipe through the second connecting end of the conversion air pipe assembly. At this time, the indoor air outlet pipe can be set to a lower air inlet and an upper air return mode, and the overall flow direction of the cold air flow sent by the indoor air outlet pipe is a parabolic trajectory upward and outward, which can realize a sky screen type cooling air supply and avoid direct blowing of cold air to the user.

[0071] When the air conditioner is in a heating mode, the second end of the indoor air outlet pipe can serve as an air inlet end, and the first end of the indoor air outlet pipe serves as an air outlet end. The cold air flow of the air supply flows along the outdoor air supply pipe and the conversion air pipe assembly, and can flow to the second end of the indoor air outlet pipe through the second connecting end of the conversion air pipe assembly; the return air flow can flow into the outdoor return air pipe from the first end of the indoor air outlet pipe through the first connecting end of the conversion air pipe assembly. At this time, the indoor air outlet pipe is in an upper air inlet and a lower air return mode, and the overall flow direction of the warm air flow sent by the indoor air outlet pipe is a parabolic trajectory downward and outward, which can realize a carpet type heating air supply and quickly and directly blow warm air to the user.

[0072] Moreover, by setting the conversion air pipe assembly, the air supply pipeline can have multiple air supply paths, so that the air supply pipeline can supply air to the first end of the indoor air outlet pipe and return air from the second end of the indoor air outlet pipe. The air supply pipeline can also supply air to the second end of the indoor air outlet pipe and return air from the first end of the indoor air outlet pipe, so that the function of the air supply pipeline is more abundant.

[0073] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0074] Figure 1 A structural schematic diagram of one perspective of the air conditioner provided by the embodiments of the present application. Figure 2 For Figure 1 A structural schematic diagram of another perspective of the air conditioner in the embodiments of the present application.

[0075] Refer to Figure 1 and Figure 2As shown, the air conditioner provided by the embodiment of the present application comprises a main machine 10, an outdoor air supply pipe 20 and an indoor air outlet pipe 30. The main machine 10 is installed outdoors. One end of the outdoor air supply pipe 20 is connected to the main machine 10, and the other end of the outdoor air supply pipe 20 extends into the indoor. The indoor air outlet pipe 30 is installed indoors, and the indoor air outlet pipe 30 is in communication with the outdoor air supply pipe 20.

[0076] The main machine 10 can suck in ambient air. After heat exchange in the main machine 10, the air is sent into the outdoor air supply pipe 20. The gas flows into the indoor air outlet pipe 30 along the outdoor air supply pipe 20, flows along the indoor air outlet pipe 30, and is blown into the indoor from the indoor air outlet pipe 30. Thus, the air conditioner realizes air supply to the indoor.

[0077] Compared with the wall-mounted air conditioner and the traditional air conditioner, no matter what type of model is included in the indoor unit, and the fan 15, the compressor 14, the heat exchanger and other components are integrated in the indoor unit. The air conditioner provided by the embodiment of the present application integrates the air suction, heat exchange and other functions in the external main machine 10. Only the indoor air outlet pipe 30 is arranged in the indoor, and the main machine 10 and the indoor air outlet pipe 30 are connected through the outdoor air supply pipe 20.

[0078] In this way, the air conditioner of the embodiment of the present application only includes the indoor air outlet pipe 30 in the indoor part. The indoor air outlet pipe 30 has a simple structure and can be in an overall elongated type. The indoor air outlet pipe 30 can be arranged along the indoor wall, for example, the indoor air outlet pipe 30 can extend along the corner of the wall. The indoor air outlet pipe 30 occupies a small space and can better integrate with the indoor space. Moreover, the components with relatively large noise during operation are integrated in the outdoor main machine 10, and only the airflow flows in the indoor indoor air outlet pipe 30. When the air conditioner works, the sound generated in the indoor is very small, and even can achieve a mute effect, which improves the user experience.

[0079] Continuing to refer to Figure 1 and Figure 2 , the air conditioner provided by the embodiment of the present application can further comprise an outdoor air return pipe 40. The air return port 114 of the outdoor air return pipe 40 is in communication with the indoor, and the air outlet port of the outdoor air return pipe 40 is connected to the main machine 10. The indoor air can enter the outdoor air return pipe 40 through the air return port 114 of the outdoor air return pipe 40, then flow to the main machine 10 along the outdoor air return pipe 40, and finally be discharged to the external environment through the air outlet port of the main machine 10.

[0080] In this way, the air conditioner can send the ambient air into the indoor through the outdoor air supply pipe 20 and the indoor air outlet pipe 30, and can also extract the indoor air to the external environment through the outdoor air return pipe 40. When the air conditioner works, the air is supplied to the indoor through the indoor air outlet pipe 30, and at the same time, the indoor air is extracted to the outdoor through the outdoor air return pipe 40.

[0081] That is, the air conditioner of the embodiment of the present application can send air to the indoor and discharge indoor air to the outside, and can realize the function of fresh air. Thus, the airflow in the indoor environment can be accelerated, the indoor airflow circulation can be enhanced, and the purpose of quickly adjusting the indoor environment temperature can be achieved. Moreover, by continuously sending fresh air into the indoor and discharging the original indoor air, the indoor can be ventilated. The indoor air quality can be ensured, air pollution can be prevented, and air pollution caused air conditioning disease can be avoided.

[0082] Especially in summer or winter, in order to ensure the indoor temperature, the indoor doors and windows are usually closed. By ventilating through the air conditioner of the embodiment, the indoor temperature can be quickly adjusted, and a comfortable environment can be provided for the user. The indoor odor can be removed in time, the dust and bacteria floating in the indoor air can be removed, and the problem of condensation, mildew, decay and the like caused by moisture can be avoided, so that a fresh and comfortable indoor environment can be created for the user.

[0083] In addition, with reference to Figure 1 or Figure 2 In the embodiment, the indoor air outlet pipe 30 can extend in the vertical direction. Or, the indoor air outlet pipe 30 can extend in the height direction of the indoor. In this way, the air supply area of the indoor air outlet pipe 30 covers most or even all of the area in the height direction of the indoor, and the air supply amount of the indoor air outlet pipe 30 is large and the air supply area is extensive, so that the air supply efficiency of the air conditioner can be improved, and the air supply uniformity of the air conditioner can be improved.

[0084] Moreover, the vertically extending indoor air outlet pipe 30 extends from the ceiling to the ground. Thus, the air supply area of the indoor air outlet pipe 30 can cover more of the user's activity area. In this way, the user can more quickly feel the temperature adjustment effect of the air conditioner, especially when the user needs to quickly feel the cold wind or hopes that the warm wind is warmer, the vertically extending indoor air outlet pipe 30 can bring a better user experience to the user. At the same time, since the temperature felt by the user is closer to the air supply temperature of the indoor air outlet pipe 30, the power of the air conditioner can be reduced, and the energy consumption of the air conditioner can be saved.

[0085] In addition, the vertically extending indoor air outlet pipe 30 is easier to install and fix. The bottom end and the top end of the indoor air outlet pipe 30 can be supported and fixed, for example, the top end of the indoor air outlet pipe 30 can abut against the ceiling or a support, and the bottom end of the indoor air outlet pipe 30 can abut against the ground or a support. In addition, the corners of the indoor extending in the height direction can laterally support the indoor air outlet pipe 30, so that the indoor air outlet pipe 30 can be stably and firmly installed in the indoor.

[0086] Figure 3 The structure schematic diagram of the host of the air conditioner provided in the embodiment of the present application is shown. With reference to Figure 3As shown, the main machine 10 comprises a casing 11, which is a main support structure of the main machine 10, and the components for realizing the air suction and heat exchange functions can be integrated in the casing 11.

[0087] For example, the casing 11 can be a cuboid, which can be vertically arranged on a mounting rack reserved outdoors. For example, the length direction (X direction shown in the figure) of the casing 11 is arranged along the horizontal direction of the outdoor wall surface of the wall, the width direction (Y direction shown in the figure) of the casing 11 corresponds to the thickness direction of the wall, and the height direction (Z direction shown in the figure) of the casing 11 extends along the height direction of the outdoor wall surface of the wall. In this way, the main machine 10 occupies a smaller outdoor space and has a smaller impact on the appearance structure of the building.

[0088] Figure 4 For Figure 3 , an exploded view of the main machine is shown. Referring to Figure 4 As shown, the casing 11 can comprise a main body 111 and a front cover 112 arranged on the opening of the main body 111. The front cover 112 and the main body 111 jointly form a receiving cavity. The air supply port 113 communicated with the outdoor air supply pipe 20 and the air return port 114 communicated with the outdoor air return pipe 40 can be arranged on the main body 111, for example, the air supply port 113 and the air return port 114 are arranged on the top wall of the main body 111. The front cover 112 can comprise a support plate 1121 and a cover plate 1122 arranged on the side surface of the support plate 1121 away from the main body 111. The support plate 1121 mainly plays a supporting role, and the cover plate 1122 can be used for some appearance design.

[0089] Continuing to refer to Figure 4 , the receiving cavity of the casing 11 is provided with an evaporator 12, a condenser 13, a compressor 14 and a fan 15. The evaporator 12 and the condenser 13 are communicated through a refrigerant circuit, and the compressor 14 is arranged on the refrigerant circuit, which realizes the circulation of the refrigerant between the evaporator 12 and the condenser 13.

[0090] For example, in the refrigeration process of the air conditioner, the gas in the casing 11 is cooled and cooled after passing through the evaporator 12, and the fan 15 sucks the cold air into the outdoor air supply pipe 20, and then flows into the indoor air supply pipe 30 through the outdoor air supply pipe 20, and finally the cold air flow is sent to the indoor by the indoor air supply pipe, so as to reduce the indoor temperature. Under the action of the fan 15, the indoor air flows back to the casing 11 through the outdoor air return pipe 40. Thus, the cycle is repeated.

[0091] With the heating process of the air conditioner as an example, the gas in the casing 11 is heated and warmed after passing through the condenser 13, the hot air is drawn into the outdoor air supply pipe 20, then flows into the indoor air supply pipe 30 through the outdoor air supply pipe 20, and finally the hot air is sent to the indoor through the indoor air supply pipe to raise the indoor temperature. Under the action of the fan 15, the indoor air flows back to the casing 11 through the outdoor air return pipe 40. Such a cycle.

[0092] In the meantime, the low-temperature, liquid refrigerant is compressed into high-pressure, liquid refrigerant by the compressor 14 and enters the evaporator 12, and absorbs heat in the evaporator 12 to become low-pressure, gaseous refrigerant. The low-pressure, gaseous refrigerant is compressed into high-pressure, gaseous refrigerant by the compressor 14 and enters the condenser 13, and releases heat in the condenser 13 to become low-pressure, liquid refrigerant. Such a cycle.

[0093] For example, the fan 15 can use a high static pressure centrifugal fan to reduce the operating noise of the fan 15 and weaken the airflow noise in the outdoor air supply pipe 20 and the outdoor air return pipe 40, contributing to the noise reduction and silence of the air conditioner.

[0094] Continuing to refer to Figure 4 Since the refrigerant releases heat in the condenser 13, the heat is dissipated from the condenser 13 to the casing 11. For this purpose, a radiator 16 can also be provided in the casing 11, and the radiator 16 can be arranged close to the condenser 13 to dissipate heat from the condenser 13 through the radiator 16 and maintain the inside of the casing 11 at a suitable temperature.

[0095] The radiator 16 can be a radiator fan. The casing 11 can be provided with an air inlet 115 and an air outlet 116. Under the action of the radiator fan, external air enters the casing 11 from the air inlet 115 on the casing 11, flows through the condenser 13, and carries away the heat of the condenser 13, and then is discharged from the air outlet 116 on the casing 11. For example, the axial direction of the radiator fan can correspond to the thickness direction of the casing 11, the air inlet 115 can be provided on the side wall of the main casing 111, and the air outlet 116 can be provided on the support plate 1121 of the front cover 112. The cover plate 1122 of the front cover 112 can be provided with a grille 11221 at the position of the air outlet 116.

[0096] Figure 5 For Figure 4 the structure of the main machine after removing the front cover. Referring to Figure 5As shown, the first partition 117 can be arranged in the shell 11, and the first partition 117 divides the shell 11 into a first accommodating cavity 1111 and a second accommodating cavity 1112 in the height direction, and the second accommodating cavity 1112 is located above the first accommodating cavity 1111. The compressor 14, the condenser 13 and the radiator 16 can be arranged in the first accommodating cavity 1111, and the evaporator 12 and the fan 15 can be arranged in the second accommodating cavity 1112. Thus, in the air conditioner of the embodiment, the components in the outdoor unit of the conventional air conditioner are integrated in the first accommodating cavity 1111 of the main machine 10, and the components in the indoor unit of the conventional air conditioner are integrated in the second accommodating cavity 1112 of the main machine 10.

[0097] The first accommodating cavity 1111 can further be provided with a second partition 118, and the second partition 118 divides the first accommodating cavity 1111 into a first sub-cavity 1113 and a second sub-cavity 1114 in the length direction. The compressor 14 can be arranged in the first sub-cavity 1113, and the condenser 13 and the radiator 16 can be arranged in the second sub-cavity 1114. In this way, the compressor 14 is completely isolated from the condenser 13 and the radiator 16, and the second sub-cavity 1114 forms a separate heat dissipation space for the condenser 13, which can improve the heat dissipation efficiency and effect of the condenser 13.

[0098] In combination with Figure 4 and Figure 5 For the fan 15 and the evaporator 12 arranged in the second accommodating cavity 1112, the air inlet of the fan 15 can be directed to the side of the return air inlet 114 on the shell 11, the air outlet of the fan 15 can be communicated with the supply air outlet 113 on the shell 11, and the evaporator 12 can be arranged between the return air inlet 114 on the shell 11 and the fan 15. In this way, as shown by the dashed arrow in Figure 5 , under the negative pressure of the fan 15, indoor air enters the shell 11 through the outdoor return air pipe 40 and the return air inlet 114 on the shell 11, and the air entering the shell 11 flows through the evaporator 12 and then is sent into the outdoor supply air pipe 20 by the fan 15.

[0099] As shown in Figure 5 , in the embodiment, the shell 11 can further be provided with a guide plate 119 in the second accommodating cavity 1112, the guide plate 119 and the shell 11 (for example, the top wall of the shell 11) enclose a guide channel 1191, and the guide channel 1191 is communicated with the return air inlet 114 on the shell 11. In addition, a plurality of guide holes 1192 can be formed in the guide plate 119, and all the guide holes 1192 are distributed in the side region of the evaporator 12 away from the fan 15, and the guide holes 1192 are communicated with the side space of the evaporator 12 away from the fan 15.

[0100] In this way, under the guiding effect of the air guiding channel 1191, the air entering from the air return port 114 of the cabinet 11 flows into the first containing cavity 1111 from the side of the evaporator 12 away from the air blower 15. Thus, the air flow can flow into the air blower 15 after passing through the evaporator 12, preventing the air flow entering from the air return port 114 from being directly sucked into the air blower 15 without passing through the evaporator 12, ensuring that the air flow completely and thoroughly exchanges heat with the evaporator 12, improving the temperature adjustment speed and temperature adjustment effect of the air conditioner. In addition, the design of the plurality of air guiding holes 1192 can make the air flow in the air guiding channel 1191 flow more uniformly through the entire surface of the evaporator 12, reducing the turbulence of the air flow and improving the cooling uniformity of the evaporator 12.

[0101] For example, the opening area of the air guiding hole 1192 on the air guiding plate 119 can gradually increase in the direction away from the air blower 15. The gradual increase of the opening area of the air guiding hole 1192 can include an increase in the density of the air guiding hole 1192 and an increase in the opening area of the single air guiding hole 1192. In this way, the air flow can be prevented from being concentrated from the area close to the evaporator 12, causing the area of the air guiding channel 1191 away from the evaporator 12 to be not effectively utilized. Further, the air flow is ensured to be fully circulated in the first containing cavity 1111, and more uniform air flow distribution can enable the air to more fully contact the evaporator 12, improving the heat exchange effect of the evaporator 12.

[0102] Figure 6 The structure schematic diagram of the air conditioner provided by the embodiment of the present application after removing the main machine is provided. Referring to Figure 6 As shown in the figure, when the air conditioner further includes an outdoor air return pipe 40, the outdoor air return pipe 40 can also be connected with the indoor air outlet pipe 30. In this way, the outdoor air return pipe 40 at the air return port 114 in the room can be integrally arranged with the indoor air outlet pipe 30. The structure of the air conditioner in the room is more concentrated and simple, which can improve the indoor aesthetic degree of the air conditioner and facilitate the indoor installation of the air conditioner.

[0103] On this basis, for the aforementioned indoor air outlet pipe 30 extending in the vertical direction, the air conditioner is further optimized and designed in terms of the air supply path and the air return path, so that the air conditioner can realize cold and warm air distribution to improve the use effect of the air conditioner.

[0104] The embodiment of the present application also provides an air supply pipe, which includes a conversion pipe assembly. The air inlet end of the conversion pipe assembly can be in communication with the outdoor air supply pipe 20, and the air return end of the conversion pipe assembly can be in communication with the outdoor air return pipe 40. The conversion pipe assembly has a first connecting end capable of being in communication with the first end of the indoor air outlet pipe and a second connecting end capable of being in communication with the second end of the indoor air outlet pipe.

[0105] When the conversion air duct assembly is in the first state, the air inlet end of the conversion air duct assembly can be in communication with the first connection end, and the air return end of the conversion air duct assembly can be in communication with the second connection end.

[0106] When the conversion air duct assembly is in the second state, the air inlet end of the conversion air duct assembly can be in communication with the second connection end, and the air return end of the conversion air duct assembly can be in communication with the first connection end.

[0107] In this way, when the air conditioner is in a cooling mode, the first end of the indoor air outlet duct can serve as an air inlet end, and the second end of the indoor air outlet duct can serve as an air outlet end. The cold air flow of the air supply flows along the outdoor air supply duct 20 and the conversion air duct assembly, and can flow to the first end of the indoor air outlet duct through the first connection end of the conversion air duct assembly; the air return flow can flow to the outdoor air return duct 40 from the second end of the indoor air outlet duct through the second connection end of the conversion air duct assembly. At this time, the indoor air outlet duct can be set to a lower air inlet and an upper air return mode, and the overall flow direction of the cold air flow sent by the indoor air outlet duct is a parabolic trajectory upward and outward, which can achieve a sky curtain type cooling air supply and avoid direct blowing of cold air to the user.

[0108] When the air conditioner is in a heating mode, the second end of the indoor air outlet duct can serve as an air inlet end, and the first end of the indoor air outlet duct can serve as an air outlet end. The hot air flow of the air supply flows along the outdoor air supply duct 20 and the conversion air duct assembly, and can flow to the second end of the indoor air outlet duct through the second connection end of the conversion air duct assembly; the air return flow can flow to the outdoor air return duct 40 from the first end of the indoor air outlet duct through the first connection end of the conversion air duct assembly. At this time, the indoor air outlet duct is in an upper air inlet and a lower air return mode, and the overall flow direction of the warm air flow sent by the indoor air outlet duct is a parabolic trajectory downward and outward, which can achieve a carpet type heating air supply and make the warm air quickly and directly blow to the user.

[0109] Furthermore, by providing the conversion air duct assembly, the air supply pipeline can have multiple air supply paths, so that the air supply pipeline can supply air to the first end of the indoor air outlet duct and return air from the second end of the indoor air outlet duct. The air supply pipeline can also supply air to the second end of the indoor air outlet duct and return air from the first end of the indoor air outlet duct, so that the function of the air supply pipeline is more abundant.

[0110] In a possible implementation, the conversion air duct assembly can include a first conversion air duct 50.

[0111] The first conversion air duct 50 can include a first air inlet section 52, a first air return section 53, and a first common section 51. The first air inlet section 52 can be in communication with the outdoor air supply duct 20, the first air return section 53 can be in communication with the outdoor air return duct 40, and the first common section 51 can be in communication with the first end of the indoor air outlet duct.

[0112] For example, the first common section 51 can be in communication with one of the first air inlet section 52 and the first air return section 53, and not in communication with the other one of the first air inlet section 52 and the first air return section 53, so as to enable the first common section 51 to be jointly applicable to the air supply process with the first air inlet section 52, and to enable the first common section 51 to be jointly applicable to the air return process with the first air return section 53.

[0113] In a possible implementation, the conversion air duct assembly can include a second conversion air duct 60.

[0114] The second conversion air duct 60 can include a second air inlet section 62, a second air return section 63, and a second common section 61. The second air inlet section 62 can be in communication with the outdoor air supply duct 20, the second air return section 63 can be in communication with the outdoor air return duct 40, and the second common section 61 can be in communication with the second end of the indoor air outlet duct.

[0115] For example, the second common section 61 can be in communication with one of the second air inlet section 62 and the second air return section 63, and not in communication with the other one of the second air inlet section 62 and the second air return section 63, so as to enable the second common section 61 to be jointly applicable to the air supply process with the second air inlet section 62, and to enable the second common section 61 to be jointly applicable to the air return process with the second air return section 63.

[0116] In a possible implementation, the conversion air duct assembly can be configured to:

[0117] When the conversion air duct assembly is in the first state, the first common section 51 is in communication with the first air inlet section 52, the first common section 51 can be jointly applicable to the air supply process with the first air inlet section 52, and the first common section 51 is not in communication with the first air return section 53. The second common section 61 is not in communication with the second air inlet section 62, the second common section 61 is in communication with the second air return section 63, and the second common section 61 is jointly applicable to the air return process with the second air return section 63.

[0118] When the air conditioner is in a cooling mode, the first end of the indoor air outlet duct can serve as an air inlet end, and the second end of the indoor air outlet duct can serve as an air outlet end. The cold air flow of the air supply flows along the outdoor air supply duct 20 and the conversion air duct assembly, and can flow to the first connection end through the first air inlet section 52 and the first common section 51 in the conversion air duct assembly, so as to flow to the first end of the indoor air outlet duct through the first connection end.

[0119] The air return flow can flow into the outdoor air return duct 40 from the second end of the indoor air outlet duct, through the second connection end of the conversion air duct assembly, and sequentially through the second common section 61 and the second air return section 63. At this time, the indoor air outlet duct can be set to a lower air inlet and an upper air return mode, and the overall flow direction of the cold air flow sent by the indoor air outlet duct is a parabolic trajectory upward and outward, which can achieve a sky curtain type cooling air supply and avoid direct blowing of cold air to the user.

[0120] That is, the end of the first common section 51 can form a first connecting end, the end of the second common section 61 can form a second connecting end, the conversion air duct assembly can be in communication with the first end of the indoor air outlet duct through the first common section 51, and the conversion air duct assembly can be in communication with the second end of the indoor air outlet duct through the second common section 61.

[0121] When the conversion air duct assembly is in the second state, the first common section 51 is not in communication with the first air inlet section 52, and the first common section 51 is in communication with the first air return section 53, so that the first common section 51 and the first air return section 53 are collectively adapted for the process of returning air; the second common section 61 is in communication with the second air inlet section 62, and the second common section 61 is not in communication with the second air return section 63, so that the second common section 61 can be collectively adapted for the process of sending air with the second air inlet section 62.

[0122] When the air conditioner is in a heating working condition, the second end of the indoor air outlet duct can serve as an air inlet end, and the first end of the indoor air outlet duct serves as an air outlet end. The hot air flow of the air supply flows along the outdoor air supply duct 20 and the conversion air duct assembly, and can flow to the second connecting end through the second air inlet section 62 and the second common section 61 in the conversion air duct assembly, so as to flow to the second end of the indoor air outlet duct through the second connecting end.

[0123] The air return flow can flow from the first end of the indoor air outlet duct to the outdoor air return duct 40 through the first connecting end of the conversion air duct assembly, the first common section 51 and the first air return section 53 in sequence. At this time, the indoor air outlet duct is in an upper air inlet and lower air return mode, and the overall flow direction of the warm air flow sent by the indoor air outlet duct is a parabolic trajectory downward and outward, which can realize carpet heating air supply, so that the warm air is quickly and directly blown to the user.

[0124] In a possible implementation, the first conversion air duct 50 can include a first control part (not shown in the figure).

[0125] The first control part has a first port, a second port and a third port, and the first control part can control the first port to be in communication with one of the second port and the third port; the first port is in communication with the first common section 51, the second port is in communication with the first air inlet section 52, and the third port is in communication with the first air outlet section.

[0126] It is easy to understand that when the conversion air duct assembly is in the first state, the first control part can control the first port and the second port to be in communication, so that the first common section 51 is in communication with the first air inlet section 52, and the first control part can control the first port and the third port not to be in communication, so that the first common section 51 and the first air return section 53 are not in communication.

[0127] When the conversion air duct assembly is in the second state, the first control portion can control the first port and the second port to be not communicated, so that the first common section 51 is not communicated with the first air inlet section 52, and the first control portion can control the first port and the third port to be communicated, so that the first common section 51 and the first air return section 53 are communicated.

[0128] For example, the second conversion air duct 60 can comprise a second control portion (not shown in the figure).

[0129] The second control portion can have a first port, a second port and a third port, and the second control portion can control the first port to be communicated with one of the second port and the third port; the first port is communicated with the second common section 61, the second port is communicated with the second air inlet section 62, and the third port is communicated with the second air outlet section.

[0130] It is easy to understand that when the conversion air duct assembly is in the first state, the second control portion can control the first port and the second port to be not communicated, so that the second common section 61 and the second air inlet section 62 are not communicated, and the second control portion can control the first port and the third port to be communicated, so that the second common section 61 and the second air return section are communicated.

[0131] When the conversion air duct assembly is in the second state, the second control portion can control the first port and the second port to be communicated, so that the second common section 61 and the second air inlet section 62 are communicated, and the second control portion can control the first port and the third port to be not communicated, so that the second common section 61 and the second air return section are not communicated.

[0132] The first control portion and the second control portion can be provided as a three-way valve or the like structure, so that the control process of the first control portion and the second control portion is more convenient.

[0133] In a possible implementation, at least part of the first common section 51 and the first air inlet section 52 are integrally formed, so that the connection between the first common section 51 and the first air inlet section 52 is more stable. The first common section 51 can be provided with a first opening 55, and the first common section 51 can be communicated with the first air return section 53 through the first opening 55.

[0134] Alternatively, at least part of the first common section 51 and the first air return section 53 are integrally formed, so that the connection between the first common section 51 and the first air return section 53 is more stable. The first common section 51 can be provided with a first opening 55, and the first common section 51 can be communicated with the first air inlet section 52 through the first opening 55.

[0135] In a possible implementation, at least part of the second common section 61 and the second air inlet section 62 are integrally formed, so that the connection between the second common section 61 and the second air inlet section 62 is more stable. The second common section 61 is provided with a second opening 65, and the second common section 61 is communicated with the second air return section 63 through the second opening 65.

[0136] Alternatively, the second common section 61 is integrally formed with at least part of the second return air section 63, so that the connection between the second common section 61 and the second air inlet section 62 is more stable. The second common section 61 is provided with a second opening 65, through which the second common section 61 communicates with the second air inlet section 62.

[0137] In a possible implementation, the first conversion air duct 50 is arranged below the second conversion air duct 60.

[0138] The outdoor air supply duct 20 extends in the vertical direction, and the outdoor return air duct 40 extends in the vertical direction. The top end of the outdoor air supply duct 20 communicates with the second air inlet section 62, and the top end of the outdoor return air duct 40 communicates with the second return air section 63.

[0139] The outdoor air supply duct 20 can be provided with a first mounting opening, through which the outdoor air supply duct 20 communicates with the first air inlet section 52. The outdoor return air duct 40 can be provided with a second mounting opening, through which the outdoor return air duct 40 communicates with the first return air section 53.

[0140] In a possible implementation, at least part of the second air inlet section 62 extends in the vertical direction, and the second air inlet section 62 is integrally formed with the outdoor air supply duct 20, so that the connection between the second air inlet section 62 and the outdoor air supply duct 20 is more stable, and the appearance of the conversion air duct assembly is more streamlined.

[0141] And / or, at least part of the second return air section 63 extends in the vertical direction, and the second return air section 63 is integrally formed with the outdoor return air duct 40, so that the connection between the second return air section 63 and the outdoor air supply duct 20 is more stable, and the appearance of the conversion air duct assembly is more streamlined.

[0142] In a possible implementation, the cross-sectional shape of the conversion air duct assembly can be square, so that the assembly process of the conversion air duct assembly can utilize the positioning effect of the shape of the conversion air duct assembly, thereby making the connection process of each component in the conversion air duct assembly more convenient.

[0143] In a possible implementation, the first connection end is provided with a first wall-penetrating section 54, which can be used to penetrate through the wall and communicate with the first end of the indoor air outlet duct, so that the first connection end can communicate with the first end of the indoor air outlet duct through the first wall-penetrating section 54.

[0144] And / or, the second connection end is provided with a second wall-penetrating section 64, which can be used to penetrate through the wall and communicate with the second end of the indoor air outlet duct, so that the second connection end can communicate with the second end of the indoor air outlet duct through the second wall-penetrating section 64.

[0145] Specifically, asFigure 6 As shown, in this embodiment, the first conversion duct 50 is connected between the outdoor supply air duct 20, the outdoor return air duct 40, and the indoor outlet air duct 30, and the second conversion duct 60 is also connected between the outdoor supply air duct 20, the outdoor return air duct 40, and the indoor outlet air duct 30. By switching the gas flow path through the first conversion duct 50 and the second conversion duct 60, the effect of distributing hot and cold air is achieved.

[0146] The first conversion duct 50 includes a lower main duct 51 (i.e., the aforementioned first common section), a lower branch duct 52 (i.e., the aforementioned first air inlet section), and a lower second branch duct 53 (i.e., the aforementioned first return air section). The first end of the lower main duct 51 is connected to the lower end of the indoor air outlet duct 30. The first ends of the lower branch duct 52 and the lower second branch duct 53 are both connected to the second end of the lower main duct 51. The second end of the lower branch duct 52 is connected to the outdoor air supply duct 20, and the second end of the lower second branch duct 53 is connected to the outdoor return air duct 40.

[0147] The second conversion duct 60 includes an upper main duct 61 (i.e., the aforementioned second common section), an upper branch duct 62 (i.e., the aforementioned second air inlet section), and an upper second branch duct 63 (i.e., the aforementioned second return air section). The first end of the upper main duct 61 is connected to the upper end of the indoor air outlet duct 30. The first ends of the upper branch duct 62 and the upper second branch duct 63 are both connected to the second end of the upper main duct 61. The second end of the upper branch duct 62 is connected to the outdoor air supply duct 20, and the second end of the upper second branch duct 63 is connected to the outdoor return air duct 40.

[0148] like Figure 6 As shown by the solid arrows, when the air conditioner is in cooling mode, the lower end of the indoor air outlet duct 30 serves as the air inlet 30a, and the upper end serves as the return air end 30b. The supplied cold air enters the outdoor air outlet duct 20 from the casing 11, and then flows into the next branch duct 52. It flows along the next branch duct 52 to the lower main duct 51, and then enters the indoor air outlet duct 30 from the air inlet 30a at the lower end of the indoor air outlet duct 30, flowing upwards within the duct. The return air enters from the return air end 30b at the upper end of the indoor air outlet duct 30, flows along the upper main duct 61 to the upper second branch duct 63, and then flows from the upper second branch duct 63 to the outdoor return air duct 40, finally entering the casing 11.

[0149] In this way, the cold air generated during cooling flows from bottom to top within the indoor air outlet duct 30. Within the indoor air outlet duct 30, the cold airflow velocity is higher in the central area and relatively lower at the edges, resulting in an overall upward and outward parabolic trajectory. Thus, during cooling, the indoor air outlet duct 30 operates in a bottom-in, top-out mode, achieving a canopy-like cooling airflow. Canopy-like cooling airflow means that the cold airflow flows from bottom to top and gradually disperses, with the cold airflow from the indoor air outlet duct 30 primarily concentrated and dispersed in the upper part of the room, preventing direct cold air from blowing onto users.

[0150] like Figure 6 As shown by the dotted arrow, when the air conditioner is in heating mode, the upper end of the indoor air outlet duct 30 serves as the air inlet 30a, and the lower end serves as the return air end 30b. The warm airflow enters the outdoor air outlet duct 20 from the casing 11, and then enters the upper branch duct 62. It flows along the upper branch duct 62 to the upper main duct 61, and then enters the indoor air outlet duct 30 from the air inlet 30a at the upper end of the indoor air outlet duct 30, flowing downwards within the duct. The return airflow enters from the return air end 30b at the lower end of the indoor air outlet duct 30, flows along the lower main duct 51 to the lower second branch duct 53, and then flows from the lower second branch duct 53 to the outdoor return air duct 40, finally entering the casing 11.

[0151] In this way, the warm air generated during heating flows from top to bottom within the indoor air outlet duct 30. Within the indoor air outlet duct 30, the warm airflow velocity is higher in the central area and relatively lower at the edges, with the overall airflow following a downward and outward parabolic trajectory. Thus, during heating, the indoor air outlet duct 30 operates in an upward intake and downward return mode, achieving a carpet-like heating and air distribution. This carpet-like heating and air distribution means that the warm airflow flows from top to bottom and gradually disperses, with the outlet area of ​​the warm airflow in the indoor air outlet duct 30 mainly concentrated and dispersed at the lower part of the room, allowing the warm air to be delivered to the user more quickly and directly.

[0152] With this setup, the connection status of the second switching duct 60 and the first switching duct 50 needs to be switched between cooling and heating modes. To achieve this, a three-way valve or movable baffle can be installed at the intersection of the outdoor supply duct 20, the next branch duct 52, and the upper branch duct 62. Similarly, a three-way valve or movable baffle can be installed at the intersection of the upper main duct 61, the upper branch duct 62, and the upper second branch duct 63, and at the intersection of the lower main duct 51, the next branch duct 52, and the lower second branch duct 53. This allows for the switching of the gas flow path via the three-way valve or movable baffle.

[0153] Figure 7 A schematic diagram of the indoor air outlet duct in an air conditioner provided in this embodiment of the application. (Refer to...) Figure 7 As shown, the indoor air outlet duct 30 includes a duct shell 100, which is the outer casing of the indoor air outlet duct 30. The duct shell 100 includes a side plate 110 and a front panel 120, which together form an air outlet duct 101. The airflow entering the indoor air outlet duct 30 flows along the air outlet duct 101.

[0154] The side plate 110 can be a solid plate without holes, while the face plate 120 can be provided with holes. The side plate 110 mainly serves as a support to ensure that the pipe shell 100 has sufficient structural strength. The face plate 120 can serve as a support, and at the same time, the face plate 120 is an appearance surface of the indoor air outlet pipe 30 exposed to the outside, the indoor air outlet pipe 30 sends air to the indoor space through the face plate 120, and the face plate 120 is used to improve the appearance effect of the indoor air outlet pipe 30.

[0155] For example, the indoor air outlet pipe 30 is installed at a wall corner, the cross-sectional shape of the pipe shell 100 can be a right triangle as a whole. The side plates 110 of the pipe shell 100 serve as two sides of the right triangle, and the two side plates 110 can be attached to the two side walls of the wall corner respectively. The face plate 120 of the pipe shell 100 serves as the hypotenuse of the right triangle as a whole, and the face plate 120 faces the indoor space to send air to the indoor space.

[0156] For example, the cross-sectional shape of the pipe shell 100 can be an isosceles right triangle as a whole. In this way, the widths of the two side plates 110 of the pipe shell 100 are the same, and the included angle between the face plate 120 and the two side walls of the wall corner is the same. The air supply area of the face plate 120 expands evenly to the two side walls, and the air supply area of the indoor air outlet pipe 30 as a whole is larger and wider, and the temperature regulation effect on the indoor space as a whole is better. Moreover, the air supply area of the face plate 120 will not be inclined to one side wall, which can weaken or even avoid the interference of the wall to the air flow, prevent the occurrence of turbulent flow and vortex phenomenon, and ensure the smooth air supply of the indoor air outlet pipe 30 to avoid air supply loss and affect the air supply efficiency of the indoor air outlet pipe 30.

[0157] Continuing to refer to Figure 7 The face plate 120 of the pipe shell 100 can include a decorative part 121 and an air outlet part. Along the width direction of the face plate 120, the decorative part 121 can be located in the middle region of the face plate 120, and the air outlet part can be provided on both sides of the decorative part 121. The air outlet part is provided with air outlet holes, the air outlet holes penetrate through the two side surfaces in the thickness direction of the face plate 120, the air outlet holes are connected to the air outlet duct 101 in the pipe shell 100 and the indoor space, and the indoor air outlet pipe 30 sends air to the indoor space through the air outlet holes. The decorative part 121 can be a solid part without holes, and the decorative part 121 mainly serves as a decoration.

[0158] Therefore, the face plate 120 of the pipe shell 100 can improve the appearance effect of the indoor air outlet pipe 30 while serving as an air supply function. By arranging the air outlet part on both sides of the decorative part 121, the face plate 120 has better symmetry. Not only is the face plate 120 more beautiful, but the face plate 120 also symmetrically sends air from the two air outlet parts, and the air supply effect of the indoor air outlet pipe is more uniform.

[0159] It should be noted that the overall shape of the transverse section of the pipe shell 100 is an isosceles right triangle, which can mean that the extension line of the outer surface of the decorative part 121 and the side plate 110 together form a right isosceles triangle. The shape of the air outlet part can be flexibly designed according to the needs of the air supply effect, and this embodiment does not make specific limitations.

[0160] In some embodiments, the decorative part 121 of the panel 120 can be provided with a lamp strip (not shown in the figure), which emits light when powered. In this way, the lamp strip can serve as indoor lighting, providing additional functions for the indoor air outlet pipe 30, making the functions of the indoor air outlet pipe 30 more diverse. Moreover, the lamp strip also has a decorative function, brightening the indoor air outlet pipe 30 itself and improving the aesthetics of the indoor air outlet pipe 30.

[0161] For example, the lamp strip can be arranged in the extension direction of the pipe shell 100. When the pipe shell 100 extends along the wall in the indoor height direction, the lamp strip can also be arranged in the indoor height direction. In this way, the lamp strip has a higher matching degree with the pipe shell 100, and the lines after the lamp strip is lit are smooth and simple, which is conducive to improving the appearance effect of the indoor air outlet pipe 30.

[0162] As an example, the lamp strip can be arranged on the front surface of the decorative part 121 (the thickness direction of the decorative part 121 and the side surface facing away from the side plate 110), and the lamp strip is arranged in a forward light-emitting mode facing the front of the panel 120. For example, the lamp strip can be arranged on the front surface of the decorative part 121 and close to the two side edges in the width direction of the decorative part 121, and the lamp strip can be clamped in the lamp groove arranged on the back surface of the decorative part 121 (the thickness direction of the decorative part 121 and the side surface facing the side plate 110).

[0163] As another example, the lamp strip can also be arranged on the two side walls in the width direction of the decorative part 121, and the lamp strip is arranged in a side light-emitting mode facing the two sides of the panel 120. At this time, the lamp strip can emit light towards the two side walls, for example, the lamp strip can project light and patterns on the two side walls to improve the lighting atmosphere effect of the lamp strip. For example, the lamp strip can be clamped in the lamp groove arranged on the inner side wall of the decorative part 121.

[0164] As shown in Figure 7 The entire indoor air outlet pipe 30 can be composed of multiple air outlet pipe sections 31, and each air outlet pipe section 31 is arranged in sequence along the extension direction of the indoor air outlet pipe 30, for example, each air outlet pipe section 31 is arranged in sequence along the corners of the indoor height direction wall. The multiple air outlet pipe sections 31 are sequentially spliced to form the indoor air outlet pipe 30, and each air outlet pipe section 31 can include a side plate 110 and a panel 120.

[0165] For example, the air outlet pipe section 31 can be designed to have a uniform length, for example, the length of the air outlet pipe section 31 is 1 meter. When installing the indoor air outlet pipe 30, the number of air outlet pipe sections 31 can be selected according to the size of the indoor wall (for example, the height of the wall).

[0166] In addition, when the total length of the air outlet pipe section 31 after being spliced in sequence does not match the size of the indoor wall, a decorative pipe section 32 can be additionally arranged at both ends of the air outlet pipe section 31 after being spliced. The number and length of the decorative pipe section 32 can be designed according to the difference between the size of the indoor wall and the total length of the air outlet pipe section 31, so that the overall length of the indoor air outlet pipe 30 matches the size of the wall.

[0167] In addition, when the decorative pipe section 32 is arranged between the air inlet end 30a of the indoor air outlet pipe 30 and the air outlet pipe section 31, the decorative pipe section 32 needs to communicate the air outlet pipe section 31 with the air inlet end 30a of the indoor air outlet pipe 30. At this time, the decorative pipe section 32 can be a hollow pipe section, and the two ends of the decorative pipe section 32 are respectively communicated with the air inlet end 30a of the indoor air outlet pipe 30 and the air outlet pipe section 31, so that the air flow entering from the air inlet end 30a of the indoor air outlet pipe 30 can flow into the air outlet pipe section 31 through the decorative pipe section 32.

[0168] Figure 8 For Figure 7 Structure diagram of the air outlet pipe section of the indoor air outlet pipe. Figure 9 For Figure 8 Cross-sectional view of the air outlet pipe section in

[0169] Referring to Figure 8 and Figure 9 As shown, the air outlet part arranged on the panel 120 of the pipe shell 100 includes a first air outlet part 122, the first air outlet part 122 is located on both sides of the decorative part 121, and the first air outlet part 122 is distributed with first air outlet holes 1221, for example, the first air outlet holes 1221 are uniformly distributed on the first air outlet part 122. As shown by the arrow direction in Figure 9 As shown by the arrow direction in

[0170] In addition, the pipe shell 100 is also provided with a first soft air plate 200. The plate surface of the first soft air plate 200 can be perpendicular to the extension direction of the air outlet air duct 101, and the first soft air plate 200 is arranged in the extension direction of the air outlet air duct 101. For example, the wall of the indoor air outlet pipe 30 extends in the indoor height direction, the plate surface of the first soft air plate 200 is perpendicular to the indoor height direction and parallel to the indoor plane direction, and the first soft air plate 200 is arranged in the indoor height direction.

[0171] During the process of the air flow along the air outlet duct 101, at least part of the air flow will pass through the first soft wind plate 200. The first soft wind plate 200 is provided with the first soft wind hole 210, and the air flow passing through the first soft wind plate 200 flows to the air outlet part of the panel 120 through the first soft wind hole 210.

[0172] Under the obstruction of the first soft wind plate 200, the air flow rate in the air outlet duct 101 can be reduced, avoiding too fast air flow rate, having a soft wind effect, making the air outlet part blow air more gently and comfortably, and improving the air supply comfort of the indoor air outlet pipe 30. Especially in the refrigeration working condition, it can avoid the strong cold wind directly blowing to the user, so as to avoid the air conditioning disease caused thereby. Moreover, at least part of the air flow in the air outlet duct 101 flows forward through the first soft wind hole 210 on each first soft wind plate 200 in turn, which can avoid most or almost all of the air flow directly flowing to the end of the air outlet duct 101 and then blowing out from the air outlet part. Under the obstruction and flow guiding effect of each first soft wind plate 200, the air flow can be blown out from the air outlet part of each region in the length direction of the indoor air outlet pipe 30, which can improve the air supply uniformity of the indoor air outlet pipe 30.

[0173] For example, the first soft wind hole 210 can be arranged in an array on the first soft wind plate 200, and the row spacing and column spacing of the first soft wind hole 210 can be equal, for example. In this way, the distribution of the first soft wind hole 210 is more regular, and the surface of the first soft wind plate 200 can be effectively utilized, the density of the first soft wind hole 210 is increased, and the air flow in the air outlet duct 101 is more dispersed.

[0174] For example, the first soft wind hole 210 can be arranged in an array on the first soft wind plate 200, and the row spacing and column spacing of the first soft wind hole 210 can be equal, for example. In this way, the distribution of the first soft wind hole 210 is more regular, and the surface of the first soft wind plate 200 can be effectively utilized, the density of the first soft wind hole 210 is increased, and the air flow in the air outlet duct 101 is more dispersed.

[0175] Continuing to refer to Figure 8 and Figure 9 , the air outlet part on the panel 120 can also include a second air outlet part 123, which is also located on both sides of the decorative part 121. The second air outlet part 123 is provided with a second air outlet hole 1231, which is uniformly distributed on the second air outlet part 123, for example. As shown by the arrow direction in Figure 9 , the air flow along the air outlet duct 101 can also flow out from the second air outlet hole 1231 opened on the second air outlet part 123 on both sides of the decorative part 121 to supply air to the indoor through the second air outlet part 123.

[0176] By arranging the first air outlet portion 122 and the second air outlet portion 123 on one side of the decorative portion 121, the first air outlet portion 122 and the second air outlet portion 123 have an included angle therebetween. It can be understood that the first air outlet portion 122, the second air outlet portion 123, the decorative portion 121 and the extension line between the side plate 110 jointly form a triangle, and the total length of the first air outlet portion 122 and the second air outlet portion 123 is greater than the length of the extension line. In this way, the area of the air outlet portion on the panel 120 can be increased, and the air outlet area of the indoor air outlet duct 30 is expanded, and the air supply efficiency and effect of the indoor air outlet duct 30 are improved.

[0177] In the present embodiment, the diameter of the first air outlet hole 1221 on the first air outlet portion 122 and the diameter of the second air outlet hole 1231 on the second air outlet portion 123 can be kept consistent. In this way, when the proportion of the opening area on the first air outlet portion 122 and the proportion of the opening area on the second air outlet portion 123 are equivalent, the pressure and flow rate of the air flow of the first air outlet portion 122 and the second air outlet portion 123 are also equivalent, the air outlet portion is uniformly air outlet, and the balance and reliability are good.

[0178] It should be noted that, since the second air outlet portion 123 is arranged between the decorative portion 121 and the first air outlet portion 122, the second air outlet portion 123 is closer to the middle region in the width direction of the panel 120. As described above, the flow rate of the air flow in the central region of the air outlet duct 101 is greater, and the flow rate in the edge region is relatively small, so the air flow will be preferentially (or more) blown out through the second air outlet portion 123, affecting the air outlet effect of the first air outlet portion 122.

[0179] To this end, in order to improve the air outlet uniformity of the entire air outlet portion, in the present embodiment, the second air outlet portion 123 can be located on the side of the decorative portion 121 facing the side plate 110. That is, the second air outlet portion 123 can extend from the decorative portion 121 towards the side plate 110. In this way, the end of the first air outlet portion 122 connected to the second air outlet portion 123 extends into the casing 100. In other words, from the end of the first air outlet portion 122 connected to the side plate 110 to the end of the first air outlet portion 122 connected to the second air outlet portion 123, the first air outlet portion 122 extends obliquely towards the inside of the casing 100.

[0180] In this way, the first air outlet portion 122 is inclined towards the inside of the casing 100, and the intersection of the first air outlet portion 122 and the second air outlet portion 123 is located on the inside of the decorative portion 121. In this way, the end of the first air outlet portion 122 connected to the second air outlet portion 123 is closer to the central region of the air outlet duct 101, and the air flow to the first air outlet portion 122 can be increased, so that the air outlet of the first air outlet portion 122 and the second air outlet portion 123 is more balanced, and the air outlet uniformity of the entire air outlet portion is better.

[0181] Furthermore, as Figure 9As shown by the arrows, the first air outlet portion 122 is inclined towards the inner tube shell 100, and the air outlet direction of the first air outlet portion 122 is inclined towards the decorative portion 121 in the middle of the panel 120. For the first air outlet portions 122 on both sides of the decorative portion 121, the air outlet directions of the first air outlet portions 122 on both sides are inclined towards the middle portion. The indoor air outlet pipe 30 is usually attached to the indoor corner, and the air outlet direction of the inwardly inclined first air outlet portion 122 is away from the wall, which can avoid the interference of the wall on the air flow of the first air outlet portion 122, ensure the smooth air outlet of the first air outlet portion 122, and avoid the turbulence and vortex phenomenon.

[0182] In addition, as Figure 9 As shown by the arrows, the air outlet direction of the second air outlet portion 123 is towards the first air outlet portion 122, and the air flow of the second air outlet portion 123 can converge with the air flow of the first air outlet portion 122. When the air flows in different directions converge, the flow rate of the air flow can be reduced due to the mutual friction between the gases, the overall air outlet flow rate of the air outlet portion is slowed down, the air supply of the indoor air outlet pipe 30 is more gentle and comfortable, and the windless effect of the indoor air outlet pipe 30 is enhanced.

[0183] For example, the second air outlet portion 123 can be perpendicular to the decorative portion 121. When the decorative portion 121 is subjected to external force, the force can propagate along the plane direction of the second air outlet portion 123, and the second air outlet portion 123 has a good supporting effect on the decorative portion 121, and the second air outlet portions 123 on both sides of the decorative portion 121 can balance the decorative portion 121. Therefore, the stress intensity of the decorative portion 121 and the second air outlet portion 123 is higher, and the reliability of the indoor air outlet pipe 30 is higher.

[0184] Continuing to refer to Figure 8 and Figure 9 On this basis, the inner tube shell 100 of the indoor air outlet pipe 30 can also be provided with a second soft wind plate 300. The extension direction of the second soft wind plate 300 can be the same as the extension direction of the decorative portion 121, and the second soft wind plate 300 can extend along the extension direction of the tube shell 100. For example, the indoor air outlet pipe 30 extends along the indoor height direction of the wall, and the plate surface of the second soft wind plate 300 is parallel to the indoor height direction.

[0185] During the flow of the air flow along the air outlet air duct 101, at least part of the air flow passing through the first soft wind plate 200 to the air outlet portion on the panel 120 will pass through the second soft wind plate 300. The second soft wind plate 300 is distributed with second soft wind holes 310, and the air flow passing through the second soft wind plate 300 flows to the air outlet portion of the panel 120 after passing through the second soft wind holes 310, and finally air is supplied outward from the air outlet portion of the panel 120.

[0186] As Figure 9As shown by the dotted arrow, most of the airflow along the air outlet duct 101 first passes through the first softening plate 200, then flows to the second softening plate 300, and finally is delivered outwards through the air outlet on the panel 120. Thus, the indoor air outlet duct 30 can provide three levels of softened airflow: the first softening plate 200 is equivalent to level one, the second softening plate 300 is equivalent to level two, and the air outlet on the air outlet is equivalent to level three. This enhances the softening effect of the indoor air outlet duct 30, enabling it to achieve an ultra-softened and ultra-comfortable airflow.

[0187] For example, the second soft air holes 310 can be evenly distributed on the second soft air plate 300 to improve the uniformity of the soft airflow of the second soft air plate 300, thereby improving the uniformity of the air supply of the indoor air outlet duct 30. Furthermore, the second soft air plate 300 experiences more balanced air pressure, resulting in higher reliability. Additionally, it facilitates the design and manufacturing of the second soft air plate 300, making it more versatile.

[0188] like Figure 9 As shown, as an example, the second airflow perforation 310 can perpendicularly penetrate both sides of the second airflow softening panel 300 in the thickness direction. Thus, after passing through the second airflow perforation 310, the airflow flows directly towards the panel 120, and then along a smooth arc path to the air outlets on both sides of the decorative panel. The longer flow path between the second airflow softening panel 300 and the air outlets reduces the airflow velocity, helping to improve the airflow softening effect of the indoor air outlet duct 30. Furthermore, the second airflow softening panel 300 has a simpler and more regular structure, facilitating its processing.

[0189] As another example, the central axis along the length of the second wind deflector 300 can be used as a baseline to design the second wind deflector 300 into zones. The second wind deflector holes 310 located on both sides of the central axis of the second wind deflector 300 are inclined towards the air outlets on both sides of the decorative part 121. Therefore, when airflow passes through the second wind deflector 300, it can guide the airflow to the air outlets on both sides, allowing the airflow to flow more accurately and quickly from the air outlets on both sides into the room.

[0190] In this way, the second air deflector 300 not only softens the airflow but also guides and divides the airflow, enhancing the orderliness of the airflow within the air outlet duct 101 and increasing the gas velocity within the duct. Consequently, it improves the air delivery efficiency of the indoor air outlet duct 30 and reduces the energy consumption of the air conditioner.

[0191] As for the positions of the first air-softening plate 200 and the second air-softening plate 300 within the casing 100, such as Figure 8 or Figure 9As shown, the first flexible air baffle 200 can be connected to the side plate 110 and extend towards the face plate 120, and the second flexible air baffle 300 can be close to the face plate 120, so that the air flow in the air outlet air duct 101 passes through the first flexible air baffle 200, the second flexible air baffle 300 and the air outlet part on the face plate 120 in sequence.

[0192] In addition, the first flexible air baffle 200 and the second flexible air baffle 300 can have a gap therebetween. The first flexible air baffle 200 and the second flexible air baffle 300 have different air flow guiding directions, and the gap between them allows the air flow passing through the first flexible air baffle 200 to diffuse to the second flexible air baffle 300. Moreover, the air flow has a certain angle when it flows to the second flexible air baffle 300, and the second flexible air baffle 300 has a certain angle therebetween, which can achieve smooth air flow through the second flexible air hole 310. Thus, the problem that the absence of a gap between the first flexible air baffle 200 and the second flexible air baffle 300 may affect the smoothness of the air outlet is avoided. Also, the air flow passing through the first flexible air hole 210 is prevented from rubbing the surface of the second flexible air baffle 300, so as to avoid generating noise in the duct.

[0193] In addition, the gap between the first flexible air baffle 200 and the second flexible air baffle 300 can also allow a part of the air flow to pass through the second flexible air hole 310 on the second flexible air baffle 300 without passing through the first flexible air baffle 200, and then flow out from the air outlet part on the face plate 120. In this way, the air flow rate in the air outlet air duct 101 can be improved, and the air supply efficiency of the indoor air outlet duct 30 can be improved.

[0194] Continuing to refer to Figure 8 and Figure 9 In this embodiment, the second flexible air baffle 300 can be connected between the two second air outlet parts 123, and the air inlet face of the second flexible air baffle 300 does not exceed the end of the first air outlet part 122 connected to the second air outlet part 123. That is, the second flexible air baffle 300 is located in the space of the second air outlet part 123, and the air inlet face of the second flexible air baffle 300 is farther than the air inlet face of the first air outlet part 122.

[0195] In this way, the air flow in the central region of the air outlet air duct 101 has a large flow rate and a fast flow speed, and most of the air flow will pass through the second flexible air baffle 300 to the second air outlet part 123 and finally flow out from the second air outlet part 123. As mentioned above, most of the air flow passes through the first flexible air baffle 200, the second flexible air baffle 300 and the second air outlet part 123 in sequence, and performs three-stage flexible air blowing. The flow rate of the air flow flowing out from the central region of the air outlet air duct 101 can be effectively reduced, and the flexible air blowing effect can be achieved.

[0196] The flow rate of the air flow in the edge region of the air outlet air duct 101 is relatively small, and the flow rate is relatively low. In the case where the second air outlet portion 123 is provided, a small part of the air flow will flow to the indoor through the first air outlet portion 122 in the edge region. By making the air flow pass through only the first flexible air plate 200 and the first air outlet portion 122, the air flow is subjected to secondary soft wind. The flow rate and flow rate of the air flow are avoided to be excessively limited, and the first air outlet portion 122 has the same air supply amount and air speed as the second air outlet portion 123.

[0197] When the second flexible air plate 300 is arranged on the air inlet side of the second air outlet portion 123, the aperture of the second flexible air hole 310 on the second flexible air plate 300 can be larger than the aperture of the second air outlet hole 1231 on the second air outlet portion 123. When the air flow passes through the second flexible air plate 300 and the second air outlet portion 123, the flow rate of the air flow gradually decreases, and the indoor air outlet pipe 30 is gradually soft. In contrast, if the aperture of the second flexible air hole 310 is smaller than the aperture of the second air outlet hole 1231, the second flexible air plate 300 can limit the flow of the air flow, and in severe cases, it can even affect the effective air outlet of the second air outlet portion 123.

[0198] Continue to refer to Figure 8 and Figure 9 The pipe shell 100 of the indoor air outlet pipe 30 can also be provided with a partition plate 400 connected between the second air outlet portion 123 and the corresponding side plate 110. In other words, one end of the partition plate 400 is connected with the side plate 110, and the other end of the partition plate 400 is connected with the second air outlet portion 123. The partition plate 400 is provided with air vents 410, which are sequentially and spaced apart along the extension direction of the pipe shell 100. The air vents 410 communicate the central region where the first flexible air plate 200 is located with the edge region where the first air outlet portion 122 is located.

[0199] On the one hand, the partition plate 400 is connected between the second air outlet portion 123 and the side plate 110, and the two work together to achieve complete support between the decorative portion 121 and the side plate 110. The partition plate 400, the second air outlet portion 123 and the second flexible air plate 300 form a frame support structure between the decorative portion 121 and the side plate 110, which can improve the reliability of the indoor air outlet pipe 30 and prolong the service life of the indoor air outlet pipe 30.

[0200] In the design of the indoor air outlet pipe 30, the first air outlet part 122 on the side plate 110 and the face plate 120 of the pipe shell 100 can be designed as an integral structure, and the partition plate 400, the second air outlet part 123 and the second flexible air plate 300 can be designed as an integral structure. Since the decorative part 121 needs to pass through the light emitted by the lamp strip, the decorative part 121 is usually made of a material different from other parts of the pipe shell 100 and the first flexible air plate 200 and the second flexible air plate 300. Therefore, the decorative part 121 can be a separate component, and a connecting plate 124 integrally connected between the two second air outlet parts 123 can be designed as a mounting base for the decorative part 121. The decorative part 121 can be attached to the surface of the connecting plate 124 by adhesion or fasteners such as screws and bolts.

[0201] On the other hand, the partition plate 400 divides a plurality of air vents 410 along the extension direction of the pipe shell 100, and the blocking part 420 between adjacent air vents 410 has a flow splitting effect, so that the airflow is more easily split from the air vents 410 on both sides of the blocking part 420. Thus, the effect of gas viscosity is weakened, and the phenomenon that most of the gas flows out after flowing to the end of the first air outlet part 122 can be avoided, so that the first air outlet part 122 has an appropriate amount of airflow flowing out in each region in the length direction, thereby improving the uniformity of the first air outlet part 122.

[0202] For example, the extension direction of the partition plate 400 can be the same as the extension direction of the second air outlet part 123. In other words, the partition plate 400 can extend along the extension direction of the second air outlet part 123, and the partition plate 400 can be considered as an extension of the second air outlet part 123. In this way, the partition plate 400 and the second air outlet part 123 have good integrity and consistency, and the supportability and reliability of the two can be improved. For example, the partition plate 400 can also be perpendicular to the decorative part 121.

[0203] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0204] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An air supply duct, characterized by The air supply pipe comprises: an outdoor air supply pipe capable of communicating with an air supply port of the main unit; an outdoor air return pipe capable of communicating with an air return port of the main unit; a conversion air pipe assembly, an air inlet end of the conversion air pipe assembly being capable of communicating with the outdoor air supply pipe, and an air return end of the conversion air pipe assembly being capable of communicating with the outdoor air return pipe; the conversion air pipe assembly having a first connecting end capable of communicating with a first end of an indoor air outlet pipe, and a second connecting end capable of communicating with a second end of the indoor air outlet pipe; when the conversion air pipe assembly is in a first state, the air inlet end of the conversion air pipe assembly communicates with the first connecting end, and the air return end of the conversion air pipe assembly communicates with the second connecting end; when the conversion air pipe assembly is in a second state, the air inlet end of the conversion air pipe assembly communicates with the second connecting end, and the air return end of the conversion air pipe assembly communicates with the first connecting end.

2. The supply air duct according to claim 1, characterized in that The conversion air pipe assembly comprises: a first conversion air pipe, the first conversion air pipe comprising a first air inlet section, a first air return section and a first common section, the first air inlet section being capable of communicating with the outdoor air supply pipe, the first air return section being capable of communicating with the outdoor air return pipe, and the first common section being capable of communicating with the first end of the indoor air outlet pipe; a second conversion air pipe, the second conversion air pipe comprising a second air inlet section, a second air return section and a second common section, the second air inlet section being capable of communicating with the outdoor air supply pipe, the second air return section being capable of communicating with the outdoor air return pipe, and the second common section being capable of communicating with the second end of the indoor air outlet pipe.

3. The supply air duct according to claim 2, characterized in that The conversion air pipe assembly is configured such that: when the conversion air pipe assembly is in the first state, the first common section communicates with the first air inlet section, and the first common section does not communicate with the first air return section; the second common section does not communicate with the second air inlet section, and the second common section communicates with the second air return section; when the conversion air pipe assembly is in the second state, the first common section does not communicate with the first air inlet section, and the first common section communicates with the first air return section; the second common section communicates with the second air inlet section, and the second common section does not communicate with the second air return section.

4. The supply air duct of claim 2, wherein The first conversion air pipe comprises a first control portion; the first control portion has a first port, a second port and a third port, and the first control portion is capable of controlling the first port to communicate with one of the second port and the third port; the first port communicates with the first common section, the second port communicates with the first air inlet section, and the third port communicates with the first air outlet section; and / or, the second conversion air pipe comprises a second control portion; the second control portion has a first port, a second port and a third port, and the second control portion is capable of controlling the first port to communicate with one of the second port and the third port; the first port communicates with the second common section, the second port communicates with the second air inlet section, and the third port communicates with the second air outlet section.

5. The supply air duct of claim 2, wherein The first common section is integrally formed with at least part of the first air inlet section, the first common section is provided with a first opening, and the first common section communicates with the first air return section through the first opening; Alternatively, the first common section is integrally formed with at least part of the first return air section, the first common section is provided with a first opening, and the first common section is in communication with the first supply air section through the first opening.

6. The supply air duct of claim 2, wherein, The second common section is integrally formed with at least part of the second supply air section, the second common section is provided with a second opening, and the second common section is in communication with the second return air section through the second opening. Alternatively, the second common section is integrally formed with at least part of the second return air section, the second common section is provided with a second opening, and the second common section is in communication with the second supply air section through the second opening.

7. The supply air duct of claim 2, wherein The first conversion air duct is arranged below the second conversion air duct. The outdoor supply air duct extends in a vertical direction, the outdoor return air duct extends in a vertical direction, a top end of the outdoor supply air duct is in communication with the second supply air section, and a top end of the outdoor return air duct is in communication with the second return air section. The outdoor supply air duct is provided with a first mounting opening, and the outdoor supply air duct is in communication with the first supply air section through the first mounting opening; the outdoor return air duct is provided with a second mounting opening, and the outdoor return air duct is in communication with the first return air section through the second mounting opening.

8. The supply air duct according to claim 7, characterized in that At least part of the second supply air section extends in a vertical direction, and at least part of the second supply air section is integrally formed with the outdoor supply air duct. At least part of the second return air section extends in a vertical direction, and at least part of the second return air section is integrally formed with the outdoor return air duct.

9. The supply air duct of claim 1, wherein, The cross-sectional shape of the conversion air duct assembly is square.

10. The supply air duct according to any one of claims 1-9, characterized in that The first connecting end is provided with a first wall-penetrating section, the first wall-penetrating section is used for penetrating through a wall, and the first wall-penetrating section is in communication with the first end of the indoor air outlet duct. The second connecting end is provided with a second wall-penetrating section, the second wall-penetrating section is used for penetrating through a wall, and the second wall-penetrating section is in communication with the second end of the indoor air outlet duct.

11. An air conditioner characterized by comprising: The air supply duct comprises the air supply duct according to any one of claims 1-10.

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