Wall-mounted air conditioner

Abstract

The application discloses a wall-mounted air conditioner. The wall-mounted air conditioner comprises a main body, the main body comprises a shell, an indoor heat exchanger, a base, a heat exchange fan and a first motor, the wall-mounted air conditioner further comprises a second motor, a fresh air fan and a fresh air volute, and a fresh air inlet and a fresh air outlet are formed in the fresh air volute, wherein the fresh air inlet is located at the bottom of the fresh air volute and opens downward, and the wall-mounted air conditioner further comprises a fresh air pipe joint, the fresh air pipe joint is used for connecting a fresh air induction pipe, and the fresh air pipe joint is suitable for being installed from back to front to the fresh air inlet to connect the fresh air inlet and the fresh air induction pipe. According to the wall-mounted air conditioner, the assembly of the fresh air pipe joint and the fresh air inlet is simpler and more convenient, the installation difficulty is reduced, and the installation cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, specifically to a wall-mounted air conditioner. Background Technology

[0002] Currently, most wall-mounted air conditioners are limited by size and weight, and their functions are relatively limited, usually only able to cool or heat indoor air. If users feel that the indoor air is stale or stuffy after running the air conditioner for a long time, the usual operation is to open the window for ventilation. This requires manually opening and closing the window, which is not only inconvenient, but also causes the cool or warm air to escape quickly through the window, affecting people's comfort.

[0003] Some existing technologies include fresh air conditioners that draw in fresh air from outdoors. However, the limited space between the air conditioner's casing and the fresh air module makes the installation of the fresh air duct connector inconvenient. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a wall-mounted air conditioner that simplifies and facilitates the assembly of the fresh air duct connector and the fresh air inlet, thereby reducing installation difficulty and costs.

[0005] According to an embodiment of the present invention, a wall-mounted air conditioner includes a main body, the main body including a casing, the casing having an accommodating cavity formed inside, a heat exchange air inlet and a heat exchange air outlet formed on the casing, and the heat exchange air inlet being located above the heat exchange air outlet in the height direction of the main body.

[0006] The main body also includes an indoor heat exchanger, which is disposed within the accommodating cavity.

[0007] The main body also includes a base, which is disposed within the accommodating cavity and has a spiral tongue air duct formed thereon.

[0008] The main body also includes a heat exchange fan, which is disposed in the volute air duct and located on the side of the indoor heat exchanger away from the heat exchange air inlet.

[0009] The main body also includes a first motor, which is disposed in the accommodating cavity and located at one end of the length direction of the main body, for driving the heat exchange fan to rotate so that the air inside the air conditioner exchanges heat with the indoor space.

[0010] The wall-mounted air conditioner further includes a second motor, which is disposed within the accommodating cavity and is located at the other end of the length direction of the main body.

[0011] The wall-mounted air conditioner also includes a fresh air fan, which is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan is located on the side of the heat exchange fan away from the first motor, and the second motor drives the fresh air fan to rotate when it is in operation.

[0012] The wall-mounted air conditioner further includes: a fresh air volute, a fresh air duct is formed inside the fresh air volute, a fresh air fan is installed inside the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; the rotation of the fresh air fan can allow outdoor air to enter the fresh air volute from the fresh air inlet, and can allow outdoor air entering the fresh air volute to enter the room from the fresh air outlet.

[0013] The fresh air inlet is located at the bottom of the fresh air volute and opens downwards.

[0014] The wall-mounted air conditioner also includes: a fresh air duct connector, which is used to connect a fresh air intake duct and is adapted to be installed from back to front to the fresh air inlet to connect the fresh air inlet and the fresh air intake duct.

[0015] According to an embodiment of the present invention, in a wall-mounted air conditioner, since the fresh air inlet opens downwards, at least a portion of the fresh air duct needs to extend in the vertical direction in order to connect with the fresh air inlet.

[0016] In the embodiment where the fresh air duct connector is installed vertically to the fresh air inlet, since the fresh air duct has a certain length in the vertical direction, when the fresh air duct connector and the fresh air duct move in the vertical direction, a large space needs to be reserved for the movement of the fresh air duct in the vertical direction. In addition, the fresh air duct will block the fresh air inlet to a certain extent in the vertical direction, making the assembly difficult and also making it difficult to observe the assembly of the fresh air duct connector and the fresh air inlet.

[0017] This application arranges the fresh air duct connector to be installed from back to front at the fresh air inlet, so that the assembly direction of the fresh air duct connector at the fresh air inlet is different from the extension direction of the fresh air exhaust duct. This avoids the need for the fresh air duct connector and the fresh air exhaust duct to move in the extension direction of the fresh air exhaust duct when installing the fresh air duct connector to the fresh air inlet and connecting the fresh air inlet and the fresh air exhaust duct. In this way, the space reserved for the movement of the fresh air duct connector and the fresh air exhaust duct in the front-back direction does not need to be too large, which facilitates the assembly operation of the fresh air duct connector and the fresh air inlet, reduces the assembly difficulty, and facilitates the observation of the assembly of the fresh air duct connector and the fresh air inlet.

[0018] According to some embodiments of this application, the fresh air volute includes a fresh air connector that defines the fresh air inlet.

[0019] The fresh air duct connector includes a first connector, which is connected to the fresh air connector.

[0020] The fresh air duct connector also includes a first connecting pipe, one end of which is connected to one side of the first connector for connecting the fresh air intake duct.

[0021] The first connector is sleeved on the outside of the fresh air connector and has a first connecting protrusion. The outside of the fresh air connector has a first limiting protrusion extending along a first direction, which is the front-back direction of the main body or is set at an angle to the front-back direction. During the process of installing the fresh air duct connector on the fresh air connector, the first connecting protrusion slides along the first direction on the surface of the first limiting protrusion away from the first pipe until the first connecting protrusion and the first limiting protrusion are in place.

[0022] According to some embodiments of this application, the rear end of the first limiting protrusion away from the side surface of the first connecting pipe has a first guide surface, the extension direction of the first guide surface being set at an angle to the first direction, for guiding the first connecting protrusion to slide on the side surface of the first limiting protrusion away from the first connecting pipe.

[0023] According to some embodiments of this application, the first guide surface is a guide slope, and the angle between the extension direction of the first guide surface and the first direction is greater than 5° and less than 60°.

[0024] According to some embodiments of this application, the outer surface of the fresh air connector has a fresh air sealing surface, which surrounds the fresh air inlet. The first connector has a fresh air mating surface on the side facing the fresh air connector, which surrounds the first connecting pipe. When the fresh air pipe connector is installed in place on the fresh air connector, the fresh air mating surface and the fresh air sealing surface are in contact and mated, and both surround the fresh air inlet.

[0025] According to some embodiments of this application, the first limiting protrusion extends along the first direction on the side surface opposite to the first pipe, and the fresh air sealing surface extends along the second direction, which is set at an angle to the first direction; during the process of installing the fresh air pipe connector on the fresh air connector head, the fresh air mating surface slides along the second direction on the fresh air mating surface until the fresh air mating surface and the fresh air sealing surface are properly mated.

[0026] According to some embodiments of this application, one of the first direction and the second direction is the front-back direction of the main body, and the other is set at an angle to the front-back direction of the main body; or, both the first direction and the second direction are set at an angle to the front-back direction of the main body.

[0027] According to some embodiments of this application, the first direction and the second direction are set at a first angle, wherein the first angle is greater than 0° and less than 45°.

[0028] According to some embodiments of this application, the first connector includes a first end plate, the first end plate is provided with a first opening, the first opening is disposed opposite to and communicates with the fresh air inlet, the first connecting pipe is connected to one side of the thickness direction of the first end plate, and the fresh air mating surface is located on the other side of the thickness direction of the first end plate.

[0029] The first connector further includes a first connecting flange, which is connected to the other side of the first end plate in the thickness direction and a portion of it is bent inward to form the first connecting protrusion.

[0030] Wherein, the first connecting flange and the first end plate define a first receiving groove, and the first limiting protrusion and the fresh air sealing surface are at least partially located in the first receiving groove so that the fresh air sealing surface and the fresh air mating surface are in contact and mating.

[0031] According to some embodiments of this application, the fresh air connector is provided with the first limiting protrusion on the outer side of the two side walls that are opposite to each other in the length direction of the main body, the fresh air sealing surface is located between the two first limiting protrusions, the first connector is provided with the first connecting protrusion on both sides in the length direction of the main body, and the fresh air mating surface is located between the two first connecting protrusions.

[0032] According to some embodiments of this application, the first connector is provided with a first connecting lug at the rear end along the front-rear direction of the body, and the first connecting lug is fixed to the fresh air connector by a first fastener.

[0033] According to some embodiments of this application, the outer side of the fresh air connector also has a first stop protrusion, the first stop protrusion being located on the side of the first limiting protrusion away from the first connecting pipe; wherein, a first limiting groove extending along the first direction is defined between the first limiting protrusion and the first stop protrusion, and during the process of installing the fresh air duct connector on the fresh air connector, the first connecting protrusion is inserted into the first limiting groove along the first direction.

[0034] According to some embodiments of this application, the side surface of the first stop protrusion facing the first limiting protrusion has a first guide surface, and the first guide surface is close to the insertion end of the first limiting groove. In the first direction, the first guide surface gradually approaches the first limiting protrusion along the direction away from the insertion end of the first limiting groove.

[0035] According to some embodiments of this application, the first guide surface is a guide slope, and the extension direction of the first guide surface is set at a second angle with the first direction, wherein the second angle is greater than 5° and less than 60°.

[0036] According to some embodiments of this application, the fresh air inlet is located at the bottom rear of the fresh air volute, and one end of the fresh air duct is sleeved on the outside of the fresh air duct joint.

[0037] According to some embodiments of this application, the wall-mounted air conditioner further includes an exhaust fan, which is a centrifugal fan with axial air intake and radial air outlet. The exhaust fan is located on the side of the heat exchange fan away from the first motor and is arranged with the fresh air fan in the length direction of the main body. When the second motor is in operation, it drives the fresh air fan and the exhaust fan to rotate synchronously.

[0038] The wall-mounted air conditioner also includes an exhaust volute, an exhaust duct is formed inside the exhaust volute, an exhaust fan is installed inside the exhaust volute, and an exhaust inlet and an exhaust outlet are formed on the exhaust volute.

[0039] The rotation of the exhaust fan allows indoor air to enter the exhaust volute from the exhaust inlet, and allows indoor air entering the exhaust volute to be exhausted to the outside from the exhaust outlet.

[0040] According to some embodiments of this application, the exhaust outlet is located at the bottom of the exhaust volute and opens downwards.

[0041] The wall-mounted air conditioner also includes an exhaust pipe connector for connecting an exhaust duct. The exhaust pipe connector is adapted to be installed from back to front to the exhaust outlet to connect the exhaust outlet and the exhaust duct.

[0042] According to some embodiments of this application, the exhaust volute includes an exhaust connector that defines the exhaust outlet.

[0043] The exhaust pipe connector includes a second connector, which is connected to the exhaust connector.

[0044] The exhaust pipe connector also includes a second connecting pipe, one end of which is connected to one side of the second connector for connecting the exhaust duct.

[0045] The second connector is sleeved on the outside of the exhaust connector and has a second connecting protrusion. The outside of the exhaust connector has a second limiting protrusion extending along a third direction, which is the front-back direction of the main body, or is set at an angle to the front-back direction.

[0046] During the installation of the exhaust pipe connector on the exhaust connector, the second connecting protrusion slides along the third direction on the surface of the second limiting protrusion away from the second pipe until the second connecting protrusion and the second limiting protrusion are properly engaged.

[0047] According to some embodiments of this application, the rear end of the second limiting protrusion away from the second pipe has a second guide surface, the extension direction of the second guide surface being angled to the third direction, for guiding the second connecting protrusion to slide on the surface of the second limiting protrusion away from the second pipe.

[0048] According to some embodiments of this application, the second guide surface is a guide slope, and the angle between the extension direction of the second guide surface and the third direction is greater than 5° and less than 60°.

[0049] According to some embodiments of this application, the outer surface of the exhaust connector has an exhaust sealing surface, which surrounds the exhaust outlet. The second connector has an exhaust mating surface on the side facing the exhaust connector, which surrounds the second connecting pipe. When the exhaust pipe connector is installed in place on the exhaust connector, the exhaust mating surface and the exhaust sealing surface are in contact and fit together, and both are arranged around the exhaust outlet.

[0050] According to some embodiments of this application, the second limiting protrusion extends along the third direction on the side surface away from the second connecting pipe, and the exhaust sealing surface extends along the fourth direction, which is set at an angle to the third direction; during the process of installing the exhaust pipe connector on the exhaust connector head, the exhaust mating surface slides along the fourth direction on the exhaust mating surface until the exhaust mating surface and the exhaust sealing surface are properly engaged.

[0051] According to some embodiments of this application, one of the third direction and the fourth direction is the front-back direction of the main body, and the other is set at an angle to the front-back direction of the main body; or, both the third direction and the fourth direction are set at an angle to the front-back direction of the main body.

[0052] According to some embodiments of this application, the third direction and the fourth direction are set at a third angle, wherein the third angle is greater than 0° and less than 45°.

[0053] According to some embodiments of this application, the second connector includes a second end plate, the second end plate is provided with a second opening, the second opening is disposed opposite to and communicates with the exhaust outlet, the second connecting pipe is connected to one side of the thickness direction of the second end plate, and the exhaust mating surface is located on the other side of the thickness direction of the second end plate.

[0054] The second connector further includes a second connecting flange, which is connected to the other side of the second end plate in the thickness direction and a portion of it is bent inward to form the second connecting protrusion.

[0055] The second connecting flange and the second end plate define a second receiving groove, and the second limiting protrusion and the exhaust sealing surface are at least partially located in the second receiving groove so that the exhaust sealing surface contacts and engages with the exhaust mating surface.

[0056] According to some embodiments of this application, the exhaust connector is provided with second limiting protrusions on the outer sides of the two side walls that are opposite to each other in the length direction of the main body, the exhaust sealing surface is located between the two second limiting protrusions, the second connector is provided with second connecting protrusions on both sides in the length direction of the main body, and the exhaust mating surface is located between the two second connecting protrusions.

[0057] According to some embodiments of this application, the second connector is provided with a second connecting lug at the rear end along the front-rear direction of the main body, and the second connecting lug is fixed to the exhaust volute by a second fastener.

[0058] According to some embodiments of this application, the outer side of the exhaust connector also has a second stop protrusion, the second stop protrusion being located on the side of the second limiting protrusion away from the second connecting pipe; wherein, a second limiting groove extending along the third direction is defined between the second limiting protrusion and the second stop protrusion, and during the process of installing the exhaust pipe connector on the exhaust connector, the second connecting protrusion is inserted into the second limiting groove along the third direction.

[0059] According to some embodiments of this application, the side surface of the second stop protrusion facing the second limiting protrusion has a second guide surface, and the second guide surface is located near the insertion end of the second limiting groove. In the third direction, the second guide surface gradually approaches the second limiting protrusion in a direction away from the insertion end of the second limiting groove.

[0060] According to some embodiments of this application, the second guide surface is a guide slope, and the extension direction of the second guide surface is set at a fourth angle with the third direction, wherein the fourth angle is greater than 5° and less than 60°.

[0061] According to some embodiments of this application, the exhaust outlet is located at the bottom rear of the exhaust volute, and one end of the exhaust duct is sleeved on the outside of the exhaust duct connector.

[0062] According to some embodiments of this application, the second motor is an external rotor motor.

[0063] The second motor includes a stator section having wound coils thereon.

[0064] The second motor further includes a rotor portion, which is arranged around the outside of the stator portion in the radial direction of the stator portion.

[0065] The second motor also includes a motor housing, the motor housing body being fixedly connected to the rotor portion.

[0066] The second motor also includes an output shaft, which is fixedly connected to the motor housing.

[0067] One of the fresh air fan and the exhaust fan is connected to the output shaft, and the other is sleeved on the radial outside of the motor housing and fixedly connected to the motor housing.

[0068] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0069] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0070] Figure 1 This is a perspective view of a wall-mounted air conditioner according to an embodiment of this application;

[0071] Figure 2 This is a front view of a wall-mounted air conditioner according to an embodiment of this application;

[0072] Figure 3 This is an exploded view of the structure of a wall-mounted air conditioner according to an embodiment of this application;

[0073] Figure 4 This is a schematic diagram showing the structural assembly of the fresh air volute, the exhaust volute, the fresh air intake duct, and the exhaust duct.

[0074] Figure 5This is a schematic diagram of the structural assembly of the fresh air volute, the exhaust volute, the fresh air intake duct, and the exhaust duct in another direction;

[0075] Figure 6 yes Figure 5 Sectional view at point AA;

[0076] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0077] Figure 8 It is an exploded view of the structure of the fresh air volute, the exhaust volute, the fresh air intake duct, and the exhaust duct.

[0078] Figure 9 This is a schematic diagram of the structural assembly of the fresh air volute, the exhaust volute, the fresh air intake duct, and the exhaust duct in another direction;

[0079] Figure 10 This is a schematic diagram of the structure when the fresh air duct is separated from the fresh air volute.

[0080] Figure 11 yes Figure 10 Enlarged view of point C in the middle;

[0081] Figure 12 This is a left view of the fresh air volute and the exhaust volute;

[0082] Figure 13 yes Figure 12 Enlarged view at point D;

[0083] Figure 14 This is a structural diagram of the first connector and the fresh air duct;

[0084] Figure 15 This is a schematic diagram of the structure of the first connector;

[0085] Figure 16 This is a structural diagram of the fresh air volute and the exhaust volute;

[0086] Figure 17 yes Figure 16 Enlarged view at point E in the middle;

[0087] Figure 18 This is a right view of the fresh air volute and the exhaust volute;

[0088] Figure 19 yes Figure 18 Enlarged view at point F;

[0089] Figure 20 This is a structural diagram of the second connector and the exhaust / ventilation duct;

[0090] Figure 21 This is a schematic diagram of the second connector.

[0091] Figure label:

[0092] 10000 wall-mounted air conditioner

[0093] Main body 1000

[0094] Housing 1, accommodating cavity V1, heat exchange air inlet 101, heat exchange air outlet 102

[0095] Base 3, volute air duct V03,

[0096] Second motor 5, stator 51, rotor 52, motor housing 531, output shaft 532

[0097] Fresh air fan 6, exhaust fan 7

[0098] Fresh air volute 8, fresh air duct V01, fresh air inlet 801, fresh air outlet 802

[0099] Fresh air connector 81, fresh air sealing surface 811, first limiting protrusion 82, first stop protrusion 83, first guide surface 84, first limiting groove 85

[0100] Fresh air duct connector 9, first connector 91, first connecting protrusion 911, fresh air mating surface 912, first end plate 913, first opening 9131, first connecting flange 914, first receiving groove 915, first connecting lug 916, first connecting pipe 92.

[0101] Fresh air duct 10, first fastener 11, second fastener 12

[0102] Exhaust volute 20, exhaust inlet 201, exhaust outlet 202, exhaust duct 203, exhaust connector 21, exhaust sealing surface 211, second limiting protrusion 22, second stop protrusion 23, second guide surface 24, second limiting groove 25.

[0103] Exhaust pipe connector 30, second connector 31, second connecting protrusion 311, exhaust mating surface 312, second end plate 313, second through port 3131, second connecting flange 314, second receiving groove 315, second connecting lug 316, second connecting pipe 32.

[0104] Exhaust and exhaust duct 40

[0105] Purification component 51, first angle L, second angle J, third angle M, fourth angle K. Detailed Implementation

[0106] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0107] In the description of this invention, it should be understood that the terms "center," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0108] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0109] This application describes the structure of a wall-mounted air conditioner 10000.

[0110] Before proceeding, let's introduce the structure of a common air conditioner. The most common type of air conditioner is the split-type air conditioner, which consists of an indoor unit and an outdoor unit. The indoor and outdoor units are connected by pipes to transfer refrigerant. The indoor unit includes an indoor heat exchanger and a heat exchange fan.

[0111] The outdoor unit includes a compressor, an outdoor heat exchanger, an outdoor fan, and a throttling device. The compressor, outdoor heat exchanger, throttling device, and indoor heat exchanger are connected in sequence to form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor heat exchanger and the indoor heat exchanger, respectively, to achieve the air conditioner's cooling mode or heating mode.

[0112] The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

[0113] The outdoor heat exchanger is configured to exchange heat between outdoor air and refrigerant transported within it. For example, in the cooling mode of the air conditioner, the outdoor heat exchanger operates as a condenser, causing the refrigerant compressed by the compressor to dissipate heat to the outdoor air and condense. In the heating mode of the air conditioner, the outdoor heat exchanger operates as an evaporator, causing the depressurized refrigerant to absorb heat from the outdoor air and evaporate.

[0114] In some embodiments, the outdoor heat exchanger further includes heat exchange fins to increase the contact area between the outdoor air and the refrigerant transported in the outdoor heat exchanger, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

[0115] The outdoor fan is configured to draw in outside air into the outdoor unit and expel the outdoor air, which has been heated by the outdoor heat exchanger, to the outside. The outdoor fan provides power for the flow of outdoor air.

[0116] A throttling device connects the outdoor and indoor heat exchangers. It regulates the refrigerant pressure flowing through both devices, thereby controlling the refrigerant flow rate between them. The flow rate and pressure of the refrigerant between the outdoor and indoor heat exchangers affect their heat exchange performance. The throttling device can be a throttling tube, an electronic valve, etc. When the throttling device is an electronic valve, its opening is adjustable to regulate the refrigerant flow rate and pressure.

[0117] In some designs, the air conditioner also includes a four-way valve connected to the refrigerant circuit. The four-way valve is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner can perform cooling mode or heating mode.

[0118] An indoor heat exchanger is configured to exchange heat between indoor air and a refrigerant transported within the indoor heat exchanger. In some embodiments, the indoor heat exchanger further includes heat exchange fins to increase the contact area between the indoor air and the refrigerant transported within the indoor heat exchanger, thereby improving the heat exchange efficiency between the indoor air and the refrigerant.

[0119] The heat exchange fan is configured to draw indoor air into the indoor unit and deliver the indoor air, after heat exchange with the indoor heat exchanger, into the room, providing power for the flow of indoor air.

[0120] Air conditioners also include a control unit, which is mainly used to control the compressor's operating frequency and the opening degree of the throttling device. Some control units can also control the speed of the outdoor fan and the heat exchange fan. The control unit is connected to the compressor, throttling device, outdoor fan, and heat exchange fan via data cables to transmit communication information.

[0121] The control device includes a processor, which may include a central processing unit (CPU), a microprocessor, or an application-specific integrated circuit (ASIC), and may be configured to perform the corresponding operations described in the control device when the processor executes a program stored in a non-transitory computer-readable medium coupled to the control device.

[0122] Non-transitory computer-readable storage media may include magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), smart cards, or flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or keyboard drive).

[0123] The present invention discloses a wall-mounted air conditioner 10000, which is an indoor unit. The wall-mounted air conditioner 10000 is typically installed on a wall, for example, in the upper area of ​​an interior wall.

[0124] The following is a reference appendix. Figures 1-17 A wall-mounted air conditioner 10000 according to an embodiment of the present invention is described.

[0125] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, the wall-mounted air conditioner 10000 includes a main body 1000, which includes a housing 1. The housing 1 has an accommodating cavity V1 inside. The housing 1 constitutes the overall external structure of the wall-mounted air conditioner 10000 and can play a protective role.

[0126] Typically, the casing 1 is a long, rectangular shell, with its length positioned horizontally, meaning it is mounted on the wall laterally. In some actual products, to facilitate the drainage of condensate, the casing 1 is mounted horizontally on the wall at a small angle to the horizontal plane.

[0127] The main body 1000 also includes an indoor heat exchanger, which is disposed within the accommodating cavity V1. As mentioned above, the indoor heat exchanger is a loop in the refrigerant circuit, through which refrigerant flows for cooling or heating the air flowing from the surface of the indoor heat exchanger. In the wall-mounted air conditioner 10000, the indoor heat exchanger typically extends along the length of the casing 1. For example, the indoor heat exchanger is a two-fold or three-fold heat exchanger, where each fold is a plate-like structure extending along the length.

[0128] Reference Figure 3The main body 1000 also includes a base 3, which is located inside the accommodating cavity V1. The base 3 is an internal mounting support structure of the main body 1000, and the indoor heat exchanger can be installed on the base 3. Specifically, a volute air duct V03 is formed on the base 3. After the indoor air enters the casing 1, it is guided by the volute air duct V03 to ensure that the indoor air encounters less resistance when flowing through the indoor heat exchanger.

[0129] The main body 1000 also includes a heat exchange fan, which is installed within the volute duct V03. In this application, the heat exchange fan can be a cross-flow fan, which has low noise and large air volume. Furthermore, the outlet air velocity of the cross-flow fan is more evenly distributed along its axial direction, which is beneficial for increasing the air delivery distance and range. Moreover, using a cross-flow fan, and having it positioned along the length of the main body 1000, ensures that the driven airflow can pass through the entire indoor heat exchanger, guaranteeing a balanced heat exchange efficiency across all parts of the indoor heat exchanger.

[0130] The main body 1000 also includes: a first motor, which is disposed in the accommodating cavity V1. The first motor is used to drive the heat exchange fan to rotate so that the air inside the air conditioner exchanges heat with the indoor space.

[0131] Please refer to this again. Figure 1 and Figure 2 The casing 1 has a heat exchange air inlet 101 and a heat exchange air outlet 102. When the heat exchange fan is running, it draws indoor air into the casing 1 through the heat exchange air inlet 101. After heat exchange with the indoor heat exchanger, the heat-exchanged air is sent to the room through the heat exchange air outlet 102.

[0132] This allows for the regulation of indoor ambient temperature. The indoor heat exchanger can function as an evaporator, so that the heat exchange outlet 102 provides cooling airflow towards the indoor space, or the indoor heat exchanger can function as a condenser, so that the heat exchange outlet 102 provides heating airflow towards the indoor space.

[0133] In this application, the heat exchange air inlet 101 is located above the heat exchange air outlet 102 in the height direction of the main body 1000, which facilitates air intake from above and air exhaust from below. In this application, the height direction of the main body 1000 is the vertical direction.

[0134] Understandably, the main unit 1000 is usually installed on the wall, and to avoid interfering with people's daily lives, it is typically hung at a high position. By setting the main unit 1000 to blow out heat exchange air from below, the blown heat exchange air is less likely to be blocked by the roof or ground. This results in less resistance and energy loss during the air blowing process, a wider air delivery range, and allows the heat exchange air to flow throughout the entire indoor space as quickly as possible, thus improving heat exchange efficiency.

[0135] Reference Figure 1 and Figure 2The heat exchange air inlet 101 is located above the heat exchange air outlet 102. The heat exchange air inlet 101 can take in air from above, which can avoid taking in air from the heat exchange air outlet 102 and prevent the heat exchange air from being blown out of the heat exchange air outlet 102 and directly sucked into the heat exchange air inlet 101, thus reducing the process of heat exchange air idling without participating in the indoor heat exchange.

[0136] In some specific embodiments, the heat exchange air inlet 101 is located at the top of the housing 1, that is, in an area that the user cannot see. Hiding the heat exchange air inlet 101 can improve the aesthetic appearance.

[0137] In some embodiments, the heat exchange outlet 102 is located directly in front of the housing 1, that is, the heat exchange outlet 102 blows air towards the front of the main body 1000. It can be understood that the side of the main body 1000 connected to the wall is usually referred to as the back or rear side, and the side opposite to the rear side is referred to as the front side. Therefore, when the heat exchange outlet 102 is located directly in front of the housing 1, the air outlet is away from the wall, the airflow resistance is small, and the air delivery range is wide.

[0138] In other embodiments, the heat exchange outlet 102 is located on the front side of the housing 1 and near the bottom. It can also be said that the heat exchange outlet 102 is located at the lower front corner of the housing 1. In this case, the heat exchange air blown out by the heat exchange outlet 102 flows forward and downward at the same time. This allows the heat exchange air to sink and fall on people or objects on the ground after being delivered a certain distance, so that people or objects on the ground can be in a comfortable indoor environment as soon as possible.

[0139] In this application, the heat exchange fan is located on the side of the indoor heat exchanger away from the heat exchange air inlet 101. It is understood that the heat exchange fan is a power-driven component that rotates to drive indoor air to exchange heat with the indoor heat exchanger, and it is also a power-driven component for air delivery.

[0140] Placing the heat exchange fan on the side of the indoor heat exchanger away from the heat exchange inlet 101 can evenly distribute the aerodynamic force generated when the heat exchange fan rotates. Part of it is distributed to the air inlet side, so that the intake air can overcome the wind resistance generated by the indoor heat exchanger when it flows into the volute air duct V03. The other part is distributed to the air outlet side, so that the air after heat exchange can be transported a longer distance when it is blown out from the heat exchange outlet 102.

[0141] In this application, the first motor is located at one end of the length of the main body 1000. This facilitates the installation and maintenance of the first motor, and the main body 1000 as a whole does not need to become excessively tall or thick due to the placement of the first motor. Here, the height direction of the main body 1000 is consistent with the vertical direction, and the thickness direction of the main body 1000 is consistent with the front-to-back direction.

[0142] Reference Figures 4-6In this application, the wall-mounted air conditioner 10000 also includes a second motor 5, which is disposed in the accommodating cavity V1 and located at the other end of the length direction of the main body 1000.

[0143] In this way, the first motor and the second motor 5 are located at both ends of the length direction of the main body 1000. On the one hand, the two motors are separated and far apart, resulting in less electromagnetic interference between them. On the other hand, the two motors are arranged at both ends of the length direction of the main body 1000, rather than in the thickness or height direction of the main body 1000, so that the main body 1000 of the wall-mounted air conditioner 10000 has a slender shape, and is thin and light.

[0144] Reference Figure 6 and Figure 7 The wall-mounted air conditioner 10000 also includes: a fresh air fan 6, which is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan away from the first motor. When the second motor 5 is in operation, it drives the fresh air fan 6 to rotate so that outdoor air enters the fresh air volute 8 from the fresh air inlet 801 and outdoor air entering the fresh air volute 8 enters the room from the fresh air outlet 802, thereby introducing fresh air into the room.

[0145] Refer again Figure 5 and Figure 6 The wall-mounted air conditioner 10000 also includes: a fresh air volute 8, a fresh air duct V01 formed inside the fresh air volute 8, a fresh air fan 6 installed inside the fresh air volute 8, and a fresh air inlet 801 and a fresh air outlet 802 formed on the fresh air volute 8. The rotation of the fresh air fan 6 allows outdoor air to enter the fresh air volute 8 through the fresh air inlet 801, and allows the outdoor air entering the fresh air volute 8 to enter the room through the fresh air outlet 802, thus introducing fresh air into the room.

[0146] In this application, a fresh air module is constructed by a fresh air volute 8 and a fresh air fan 6. The fresh air fan 6 is installed inside the fresh air duct V01 and is used to drive airflow to be drawn in from the fresh air inlet 801 and discharged into the room through the fresh air outlet 802. The operation of the fresh air fan 6 provides the power for the flow of fresh air.

[0147] Therefore, by setting up a fresh air duct V01 in conjunction with a fresh air fan 6, when the indoor air is relatively polluted or the air quality is average, the fresh air fan 6 can drive relatively fresh outdoor air into the indoor environment to improve the indoor airflow environment.

[0148] Reference Figures 9-12 The fresh air inlet 801 is located at the bottom of the fresh air volute 8, and the fresh air inlet 801 opens downwards.

[0149] The wall-mounted air conditioner 10000 also includes: a fresh air duct connector 9, which is used to connect the fresh air intake duct 10. The fresh air duct connector 9 is adapted to be installed from back to front to the fresh air inlet 801 to connect the fresh air inlet 801 and the fresh air intake duct 10.

[0150] Specifically, one end of the fresh air duct 10 is connected to the fresh air inlet 801, and the other end of the fresh air duct 10 is adapted to be connected to the outside, so that when the fresh air fan 6 rotates, the outdoor air can enter the fresh air inlet 801 along the fresh air duct 10, and then enter the fresh air duct V01, and be discharged into the room through the fresh air outlet 802 to introduce fresh air into the room.

[0151] According to the wall-mounted air conditioner 10000 of the present application embodiment, since the fresh air inlet 801 opens downwards, at least a portion of the fresh air duct 10 needs to extend in the vertical direction in order to connect with the fresh air inlet 801.

[0152] In the embodiment where the fresh air duct connector 9 is installed vertically to the fresh air inlet 801, the fresh air duct 10 has a certain length in the vertical direction, while the space in the housing 1 and the fresh air volute 8 is limited in the vertical direction. Furthermore, since the housing 1 is a long, narrow shell with its length horizontally aligned, the opening size in the vertical direction is small. This makes moving the fresh air duct connector 9 and the fresh air duct 10 vertically to align with the fresh air inlet 801 extremely inconvenient, resulting in significant installation difficulties. Simultaneously, the fresh air duct 10 partially obstructs the fresh air inlet 801 in the vertical direction, hindering observation of the assembly of the fresh air duct connector 9 and the fresh air inlet 801, further complicating the installation process.

[0153] This application allows the fresh air duct connector 9 to be installed from back to front to the fresh air inlet 801. On the one hand, this installation procedure is more in line with human operating habits, making it easier for operators to apply force to the fresh air duct connector 9 from back to front to install the fresh air duct connector 9 to the fresh air inlet 801.

[0154] On the other hand, the housing 1 is a long strip-shaped shell with its length direction set horizontally. Therefore, the housing 1 can form a large opening on the rear side, giving the housing 1 and the fresh air volute 8 a large space in the front-to-back direction. This provides the operator with a large operating space when the fresh air duct connector 9 and the fresh air intake duct 10 are moved in the front-to-back direction to match the fresh air inlet 801, which facilitates the operator's operation, reduces the difficulty of operation, and reduces the difficulty of installation.

[0155] In addition, since the fresh air inlet 801 opens downwards, the fresh air duct 10 will block the fresh air inlet 801 to a certain extent in the vertical direction. This makes the assembly direction of the fresh air duct connector 9 when it is installed at the fresh air inlet 801 different from the extension direction of the fresh air duct 10. This makes it easier to adjust and observe the alignment between the fresh air duct connector 9 and the fresh air inlet 801, thereby improving assembly efficiency and reducing assembly difficulty.

[0156] In some embodiments, after the fresh air duct connector 9 is installed from back to front to the fresh air inlet 801, the fresh air duct 10 can be bent, for example, bent backward, left or right, so that the fresh air duct 10 extends backward, left or right out of the housing 1, so that the other end of the fresh air duct 10 can be connected to the outside.

[0157] In some embodiments of this application, reference is made to Figure 10 and Figure 11 The fresh air volute 8 includes a fresh air connector 81, which defines a fresh air inlet 801.

[0158] refer to Figure 14 and 13 The fresh air duct connector 9 includes a first connector 91, which is connected to the fresh air connector 81.

[0159] The fresh air duct connector 9 also includes a first connecting pipe 92, one end of which is connected to one side of the first connector 91 for connecting the fresh air duct 10, so as to connect the fresh air connector 81 and the fresh air duct 10 using the first connector 91, thereby connecting the fresh air inlet 801 to the fresh air duct 10.

[0160] In some embodiments, reference Figure 14 and Figure 15 The outer sleeve of the fresh air duct 10 is fixed to the first connecting pipe 92 to fix the fresh air duct 10 and the fresh air duct connector 9. Then, when the first connector 91 is connected to the fresh air connector 81, the fresh air inlet 801 is connected to the fresh air duct 10, so that the outdoor air can flow along the fresh air duct 10 to the fresh air inlet 801 and enter the fresh air duct V01 from the fresh air inlet 801.

[0161] In some embodiments of this application, reference is made to Figures 11-15The first connector 91 is fitted onto the outside of the fresh air connector 81. The first connector 91 has a first connecting protrusion 911, and the outside of the fresh air connector 81 has a first limiting protrusion 82 extending in a first direction. During the process of installing the fresh air duct connector 9 onto the fresh air connector 81, the first connecting protrusion 911 slides along the first direction on the surface of the first limiting protrusion 82 on the side opposite to the first connecting pipe 92 until the first connecting protrusion 911 and the first limiting protrusion 82 are engaged in place, so that the first connecting protrusion 911 is placed on the first limiting protrusion 82, thereby connecting the first connector 91 and the fresh air connector 81, and thus connecting the fresh air inlet 801 and the fresh air duct 10.

[0162] The first direction is the front-back direction of the main body 1000, or the first direction is set at an angle to the front-back direction, so that when the fresh air duct connector 9 is installed on the fresh air connector 81 from back to front, the first connecting protrusion 911 can slide and cooperate with the first limiting protrusion 82, thereby realizing the smooth connection between the first connector 91 and the fresh air connector 81.

[0163] In some embodiments of this application, the rear end of the first limiting protrusion 82 on the side surface opposite to the first connecting pipe 92 has a first guide surface. The extension direction of the first guide surface is set at an angle to the first direction, which is used to guide the first connecting protrusion 911 to slide on the side surface of the first limiting protrusion 82 opposite to the first connecting pipe 92.

[0164] Specifically, a first guide surface is provided at the rear end of the side surface of the first limiting protrusion 82 that is away from the first connecting pipe 92. The extension direction of the first guide surface is set at an angle to the first direction, so as to expand the range in which the first guide surface can cooperate with the first connecting protrusion 911 in the vertical direction, thereby reducing the fitting accuracy between the first connecting protrusion 911 and the first limiting protrusion 82 when the first connector 91 is installed at the fresh air connector 81, and making it easier to reduce the installation difficulty.

[0165] For example, the upper surface of the first connecting protrusion 911 slides into the upper surface of the first limiting protrusion 82, and the first guiding surface extends obliquely in the forward and upward direction.

[0166] When the first connector 91 is installed to the fresh air connector 81 from back to front, the first connecting protrusion 911 can first cooperate with the first guide surface. The first guide surface guides the first connecting protrusion 911 to gradually slide towards the upper surface of the first limiting protrusion 82, so that the first connecting protrusion 911 can slide forward smoothly on the upper surface of the first limiting protrusion 82, thereby achieving smooth cooperation between the first connecting protrusion 911 and the first limiting protrusion 82.

[0167] Specifically, due to limitations such as the observation angle, when the first connector 91 is installed to the fresh air connector 81 from back to front, the initial position of the first connector 91 is easily lower than its position when it is installed in place. This causes the position of the first connecting protrusion 911 to be lower than the upper surface of the first limiting protrusion 82. Although the position of the first connecting protrusion 911 is lower than the upper surface of the first limiting protrusion 82, the first connecting protrusion 911 can first slide and engage with the first guide surface. The first guide surface guides the movement of the first connecting protrusion 911. In this way, when a forward force is applied to the first connector 91, the first guide surface can guide the first connecting protrusion 911 to move upward and forward, so that the first connector 91 moves upward and forward.

[0168] In other words, when the first guide surface engages with the first connecting protrusion 911, although only a forward force is applied to the first connector 91, under the guidance of the first guide surface, the first connecting protrusion 911 can move upward and forward to a position corresponding to the upper surface of the first limiting protrusion 82, and the first connector 91 can move upward and forward to a position corresponding to the fresh air connector 81, thereby achieving smooth engagement between the first connecting protrusion 911 and the first limiting protrusion 82, and smooth engagement between the first connector 91 and the fresh air connector 81.

[0169] In some embodiments of this application, the first guide surface is a guide slope, and the angle between the extension direction of the first guide surface and the first direction is greater than 5° and less than 60°, so as to expand the range in which the first guide surface can cooperate with the first connecting protrusion 911 in the vertical direction, thereby reducing the installation accuracy required when installing the first connector 91 to the fresh air connector 81 and reducing the installation difficulty.

[0170] The larger the angle between the extension direction of the first guide surface and the first direction, the larger the range in which the first guide surface can mate with the first connecting protrusion 911 in the vertical direction, and the easier it is to install the first connector 91 to the fresh air connector 81. Therefore, the angle between the extension direction of the first guide surface and the first direction needs to be greater than 5° to reduce the installation difficulty of installing the first connector 91 to the fresh air connector 81. However, the larger the angle between the extension direction of the first guide surface and the first direction, the larger the space occupied by the first guide surface in the vertical direction. Therefore, the angle between the extension direction of the first guide surface and the first direction needs to be less than 60° to avoid the first guide surface occupying too much space in the vertical direction, which would affect the setting of the fresh air connector 81.

[0171] In some embodiments, the angle between the extension direction of the first guide surface and the first direction can be 6°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55° or 58°, without much limitation.

[0172] In some embodiments of this application, reference is made to Figure 11 and Figure 15 The outer surface of the fresh air connector 81 has a fresh air sealing surface 811, which surrounds the fresh air inlet 801. The side of the first connector 91 facing the fresh air connector 81 has a fresh air mating surface 912, which surrounds the first pipe 92.

[0173] When the fresh air duct connector 9 is installed on the fresh air connector 81, the fresh air mating surface 912 and the fresh air sealing surface 811 are in contact and fit together, and both are arranged around the fresh air inlet 801 to achieve a sealed connection between the fresh air duct connector 9 and the fresh air connector 81, reducing the possibility of air leakage from the outer edge of the fresh air inlet 801 when air flows through the connection between the fresh air duct connector 9 and the fresh air connector 81.

[0174] In some embodiments, the contact mating of the fresh air mating surface 912 and the fresh air sealing surface 811 achieves a sealed connection between the fresh air duct connector 9 and the fresh air connector 81.

[0175] In other embodiments, at least one of the upper surface of the fresh air duct connector 9 and the lower surface of the fresh air connector 81 is provided with a first mating groove. The first mating groove is located inside the fresh air mating surface 912 and the fresh air sealing surface 811. The first mating groove is arranged around the fresh air inlet 801. A first sealing ring is provided in the first mating groove. The first sealing ring is used to seal the gap between the upper surface of the fresh air duct connector 9 and the lower surface of the fresh air connector 81, thereby achieving a sealed connection between the fresh air duct connector 9 and the fresh air connector 81.

[0176] Specifically, this embodiment has a good sealing effect on the fresh air duct connector 9 and the fresh air connector 81, respectively by utilizing the contact fit of the fresh air mating surface 912 and the fresh air sealing surface 811, and by utilizing the first sealing ring to achieve a sealed connection between the fresh air duct connector 9 and the fresh air connector 81.

[0177] Some embodiments of this application, refer to Figure 11 and Figure 15 The first limiting protrusion 82 extends along the first direction on the side surface opposite to the first pipe 92, and the fresh air sealing surface 811 extends along the second direction. The second direction is set at an angle to the first direction. During the process of installing the fresh air pipe connector 9 on the fresh air connector 81, the fresh air mating surface 912 slides along the second direction on the fresh air sealing surface 811 until the fresh air mating surface 912 and the fresh air sealing surface 811 are properly mated.

[0178] The second direction is set at an angle to the first direction, which means that the extension direction of the fresh air mating surface 912 is not consistent with the sliding direction (first direction). This results in the following: when the first connecting protrusion 911 slides along the first direction on the side surface of the first limiting protrusion 82 away from the first pipe 92, and the fresh air mating surface 912 slides along the second direction on the fresh air sealing surface 811, the force generated between the fresh air mating surface 912 and the fresh air sealing surface 811 includes a first component force and a second component force. The first component force is parallel to the second direction, and the second component force is perpendicular to the second direction.

[0179] Specifically, the first component force is used to push the fresh air mating surface 912 to slide forward on the fresh air sealing surface 811 along the second direction. The second component force causes a compressive force between the fresh air mating surface 912 and the fresh air sealing surface 811, thereby creating a frictional force between the fresh air mating surface 912 and the fresh air sealing surface 811.

[0180] The magnitude of the friction is related to the compressive force between the fresh air mating surface 912 and the fresh air sealing surface 811, as well as the contact area between them. When the fresh air duct connector 9 is installed onto the fresh air connector 81 from back to front, the contact area between the fresh air mating surface 912 and the fresh air sealing surface 811 gradually increases, leading to a gradual increase in the friction between them. This results in a tighter fit between the fresh air mating surface 912 and the fresh air sealing surface 811, ensuring a sealed connection between the fresh air duct connector 9 and the fresh air connector 81 when they are properly engaged.

[0181] In some embodiments, the upper surface of the first limiting protrusion 82 is slidably engaged with the lower surface of the first connecting protrusion 911. The upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 are sandwiched between the lower surface of the first connecting protrusion 911 and the fresh air mating surface 912. The upper surface of the first limiting protrusion 82 extends obliquely in the forward and upward direction, and the fresh air sealing surface 811 extends horizontally in the front-back direction. In the back-forward direction, the distance between the upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 in the vertical direction gradually increases.

[0182] In some examples, the lower surface of the first connecting protrusion 911 extends horizontally in the front-back direction, and the fresh air mating surface 912 extends horizontally in the front-back direction. In the direction from back to front, the lower surface of the first connecting protrusion 911 and the fresh air mating surface 912 are equidistant in the vertical direction.

[0183] In the backward direction, the distance between the upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 gradually increases in the vertical direction, while the distance between the lower surface of the first connecting protrusion 911 and the fresh air mating surface 912 is the same in the vertical direction. Therefore, when the fresh air duct connector 9 is installed onto the fresh air connector 81 from the backward direction, the compressive force between the upper surface of the first limiting protrusion 82 and the lower surface of the first connecting protrusion 911 gradually increases, as does the compressive force between the fresh air sealing surface 811 and the fresh air mating surface 912. As the mating area between the fresh air mating surface 912 and the fresh air sealing surface 811 gradually increases, the friction between the fresh air mating surface 912 and the fresh air sealing surface 811 also gradually increases until the fresh air mating surface 912 and the fresh air sealing surface 811 are properly mated and can fit tightly together.

[0184] In other examples, refer to Figure 15 The lower surface of the first connecting protrusion 911 extends obliquely in the forward and upward direction, and the fresh air mating surface 912 extends horizontally in the front and back direction. In the direction from back to front, the distance between the upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 in the vertical direction gradually increases.

[0185] When the lower surface of the first connecting protrusion 911 slides along the upper surface of the first limiting protrusion 82 in an upward and forward direction, the fresh air mating surface 912 is adapted to gradually slide towards the fresh air sealing surface 811 in an upward and forward direction until the fresh air mating surface 912 and the fresh air sealing surface 811 are properly mated, and the fresh air sealing surface 811 and the fresh air mating surface 912 can fit tightly together.

[0186] In this way, when the upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 initially enter between the lower surface of the first connecting protrusion 911 and the fresh air mating surface 912, the pressure between the fresh air mating surface 912 and the fresh air sealing surface 811 is small before or when they are in contact. This facilitates the initial docking of the fresh air pipe connector 9 and the fresh air connector 81, and makes it easier to apply force subsequently to make the fresh air pipe connector 9 and the fresh air connector 81 fit in place, so that the fresh air sealing surface 811 and the fresh air mating surface 912 can fit tightly together.

[0187] In some embodiments of this application, one of the first direction and the second direction is the front-back direction of the main body 1000, and the other is set at an angle to the front-back direction of the main body 1000; or, both the first direction and the second direction are set at an angle to the front-back direction of the main body 1000.

[0188] For example, the first direction extends along the front-back direction, and the second direction is set at an angle to the front-back direction.

[0189] For example, the second direction extends along the front-back direction, while the first direction is set at an angle to the front-back direction.

[0190] For example, both the first direction and the second direction are set at an angle to the front and back directions, and the first direction intersects the second direction.

[0191] All three examples above can achieve different directions for the first and second directions. When the fresh air duct connector 9 is installed onto the fresh air connector 81 from back to front, and the fresh air duct connector 9 is slid forward, as the first connecting protrusion 911 moves along the first direction on the first limiting protrusion 82, the fit between the fresh air mating surface 912 and the fresh air sealing surface 811 becomes increasingly tight. This facilitates reducing or preventing assembly gaps between the fresh air mating surface 912 and the fresh air sealing surface 811, achieving a tight fit between them. The fresh air mating surface 912 and the fresh air sealing surface 811 are then used to achieve a sealed connection between the fresh air duct connector 9 and the fresh air connector 81.

[0192] Specifically, in the embodiment where the upper surface of the first limiting protrusion 82 slides with the lower surface of the first connecting protrusion 911, and in the embodiment where the upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 are sandwiched between the lower surface of the first connecting protrusion 911 and the fresh air mating surface 912, the distance between the upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 gradually increases in the vertical direction from back to front. Thus, when the fresh air duct connector 9 is installed onto the fresh air connector 81 from back to front, the compressive force between the fresh air sealing surface 811 and the fresh air mating surface 912 gradually increases, resulting in a tight fit between the fresh air sealing surface 811 and the fresh air mating surface 912 when they are in place, achieving a sealed connection between the fresh air duct connector 9 and the fresh air connector 81.

[0193] In some embodiments of this application, reference is made to Figure 12 , Figure 13 The first direction and the second direction are set at a first angle L, where the first angle L is greater than 0° and less than 45°.

[0194] The size of the first angle L determines the distance that the fresh air mating surface 912 moves toward the fresh air sealing surface 811 when the fresh air duct connector 9 moves forward a certain distance. In other words, the size of the first angle L determines the extent of the increase in the compressive force between the fresh air mating surface 912 and the fresh air sealing surface 811 when the fresh air duct connector 9 moves forward a certain distance.

[0195] If the first angle L is too small, the squeezing force and friction between the fresh air mating surface 912 and the fresh air sealing surface 811 will be small when they are properly mated, which may prevent the fresh air mating surface 912 and the fresh air sealing surface 811 from being tightly fitted together.

[0196] If the first angle L is too large, the force required to be applied to the fresh air duct connector 9 during assembly will be greater, making assembly and disassembly more difficult. Specifically, the larger the first angle L, the greater the distance that the fresh air mating surface 912 moves towards the fresh air sealing surface 811 when the fresh air duct connector 9 moves forward a certain distance. The greater the increase in the compressive and frictional forces between the fresh air mating surface 912 and the fresh air sealing surface 811, the greater the force required to be applied to the fresh air duct connector 9 during assembly.

[0197] The size of the first angle L can be determined based on the distance that the fresh air duct connector 9 needs to move forward, the distance that the fresh air mating surface 912 needs to move upward toward the direction of the fresh air sealing surface 811, and the amount of extrusion and friction required between the fresh air mating surface 912 and the fresh air sealing surface 811 when they are in place.

[0198] In some embodiments, the first angle L can be 1°, 2°, 3°, 4°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, or 44°.

[0199] In some embodiments of this application, reference is made to Figure 15 The first connector 91 includes: a first end plate 913, a first opening 9131 on the first end plate 913, the first opening 9131 being opposite to and connected to the fresh air inlet 801, a first connecting pipe 92 being connected to one side of the thickness direction of the first end plate 913, and the fresh air mating surface 912 being located on the other side of the thickness direction of the first end plate 913.

[0200] The first port 9131 is adapted to connect the two sides of the first end plate 913 in the thickness direction. When the fresh air duct connector 9 is installed on the fresh air connector 81, the first port 9131 connects the fresh air inlet 801 and the first pipe 92. The first pipe 92 connects the fresh air inlet 801 and the fresh air duct 10, so that outdoor air can enter the fresh air inlet 801 through the fresh air duct 10 from the first port 9131, and then enter the fresh air duct V01. The air in the fresh air duct V01 is adapted to enter the room from the fresh air outlet 802 to introduce fresh air into the room.

[0201] refer to Figure 15The first connector 91 further includes a first connecting flange 914, which is connected to the other side of the first end plate 913 in the thickness direction and is partially bent inward to form a first connecting protrusion 911. A first receiving groove 915 is defined between the first connecting flange 914 and the first end plate 913. The first limiting protrusion 82 and the fresh air sealing surface 811 are at least partially located within the first receiving groove 915, so that the fresh air sealing surface 811 contacts and engages with the fresh air mating surface 912.

[0202] Specifically, the lower surface of the first connecting protrusion 911 slides into the upper surface of the first limiting protrusion 82, thereby defining a first receiving groove 915 between the first connecting flange 914 and the first end plate 913. The first limiting protrusion 82 and the fresh air sealing surface 811 are at least partially located within the first receiving groove 915. This allows the upper surface of the first limiting protrusion 82 and the fresh air sealing surface 811 to be located between the lower surface of the first connecting protrusion 911 and the fresh air mating surface 912, enabling the fresh air sealing surface 811 to contact and engage with the fresh air mating surface 912. The engagement of the fresh air sealing surface 811 and the fresh air mating surface 912 achieves a sealed connection between the fresh air duct connector 9 and the fresh air connector 81.

[0203] In some embodiments, the first end plate 913 and the first connecting flange 914 can be formed by bending the sheet metal parts. This is convenient to process and the process is simple. In addition, this can directly make the first connecting flange 914 and the first end plate 913 into one piece, which can improve the firmness of the connection between the first connecting flange 914 and the first end plate 913.

[0204] In some embodiments of this application, the fresh air connector 81 has a first limiting protrusion 82 on the outer side of the two side walls opposite to each other in the length direction of the main body 1000. The fresh air sealing surface 811 is located between the two first limiting protrusions 82. The first connector 91 has a first connecting protrusion 911 on both sides in the length direction of the main body 1000. The fresh air mating surface 912 is located between the two first connecting protrusions 911. The two first connecting protrusions 911 and the two first limiting protrusions 82 are matched one-to-one, so that the two sides of the fresh air duct connector 9 in the length direction of the main body 1000 respectively mate with the two sides of the fresh air connector 81 in the length direction of the main body 1000, thereby limiting the relative displacement of the fresh air duct connector 9 and the fresh air connector 81 in the length direction of the main body 1000, and improving the stability of the mating of the fresh air duct connector 9 and the fresh air connector 81.

[0205] The fresh air sealing surface 811 is located between the two first limiting protrusions 82, and the fresh air mating surface 912 is located between the two first connecting protrusions 911. When the two first connecting protrusions 911 and the two first limiting protrusions 82 are matched one-to-one, the compressive force and friction between the fresh air sealing surface 811 and the fresh air mating surface 912 can be enhanced, thereby achieving a tighter fit between the fresh air sealing surface 811 and the fresh air mating surface 912, and making the fresh air pipe joint 9 and the fresh air connector 81 sealed and connected.

[0206] In some embodiments of this application, reference is made to Figure 9 and Figure 15 The first connector 91 is provided with a first connecting lug 916 at the rear end along the front-rear direction of the main body 1000. The first connecting lug 916 is fixed to the fresh air connector 81 by the first fastener 11 to fix the first connector 91 and the fresh air connector 81 together, thereby reducing the possibility of the first connector 91 and the fresh air connector 81 accidentally falling off.

[0207] The first fastener 11 can be a screw, bolt, pin or other fastener, without much restriction.

[0208] In some embodiments, reference Figure 9 and Figure 15 The first connecting lug 916 is provided with a first fixing hole, the fresh air connector 81 is provided with a first connecting hole, and the first fastener 11 is adapted to pass through the first fixing hole and the first connecting hole to fix the first connector 91 and the fresh air connector 81 together.

[0209] In some embodiments of this application, reference is made to Figure 11 The outer side of the fresh air connector 81 also has a first stop protrusion 83, which is located on the side of the first limiting protrusion 82 away from the first connecting pipe 92. The first limiting protrusion 82 and the first stop protrusion 83 define a first limiting groove 85 extending in a first direction. During the installation of the fresh air pipe connector 9 on the fresh air connector 81, the first connecting protrusion 911 is inserted into the first limiting groove 85 in the first direction. When the first connecting protrusion 911 slides in the first direction on the surface of the first limiting protrusion 82 away from the first connecting pipe 92, the first stop protrusion 83 and the first limiting protrusion 82 can simultaneously restrict the position of the first connecting protrusion 911 and restrict the sliding direction of the first limiting protrusion 82, thereby improving the stability of the sliding fit between the first connecting protrusion 911 and the first limiting protrusion 82 and improving the stability of the fit between the fresh air connector 81 and the first connector 91.

[0210] In some embodiments of this application, reference is made to Figure 11The first stop protrusion 83 has a first guide surface 84 on the side surface facing the first limiting protrusion 82. The first guide surface 84 is close to the insertion end of the first limiting groove 85. In the first direction, the first guide surface 84 gradually approaches the first limiting protrusion 82 in the direction away from the insertion end of the first limiting groove 85. The first guide surface 84 is used to guide the first connecting protrusion 911 to slide in the direction close to the first stop protrusion 83, so that the first limiting protrusion 82 can smoothly enter the first limiting groove 85 and contact the first limiting protrusion 82 and slide with the surface of the first limiting protrusion 82 on the side away from the first connecting pipe 92.

[0211] Specifically, the first stop protrusion 83 is located above the first limiting protrusion 82. The rear end of the first stop protrusion 83 is provided with a first guide surface 84. The first guide surface 84 extends obliquely in the forward and downward direction to expand the range in the vertical direction where the first guide surface 84 can cooperate with the first connecting protrusion 911. This reduces the fitting accuracy between the first connecting protrusion 911 and the first limiting groove 85 when the first connector 91 is installed at the fresh air connector 81, thus reducing the difficulty of installation.

[0212] When the first connector 91 is installed to the fresh air connector 81 from back to front, the first connecting protrusion 911 can first cooperate with the first guide surface 84. The first guide surface 84 guides the first connecting protrusion 911 to gradually slide towards the first stop protrusion 83, so that the first connecting protrusion 911 gradually slides towards the first limiting protrusion 82, so that the first connecting protrusion 911 can smoothly enter the first limiting groove 85 and slide cooperate with the upper surface of the first limiting protrusion 82, thereby achieving smooth cooperation between the first connecting protrusion 911 and the first limiting protrusion 82.

[0213] Specifically, due to limitations such as the observation angle, when the first connector 91 is installed to the fresh air connector 81 from back to front, the initial position of the first connector 91 is easily higher than its position when it is installed in place. This causes the position of the first connecting protrusion 911 to be higher than the lower surface of the first stop protrusion 83. Although the position of the first connecting protrusion 911 is higher than the lower surface of the first stop protrusion 83, the first connecting protrusion 911 can first slide and engage with the first guide surface 84. The first guide surface 84 guides the movement of the first connecting protrusion 911. In this way, when a forward force is applied to the first connector 91, the first guide surface 84 can guide the first connecting protrusion 911 to move downward and forward, causing the first connector 91 to move downward and forward.

[0214] In other words, when the first guide surface 84 engages with the first connecting protrusion 911, although only a forward force is applied to the first connector 91, under the guidance of the first guide surface 84, the first connecting protrusion 911 can move downward and forward to a position corresponding to the lower surface of the first stop protrusion 83, so that the first connecting protrusion 911 can smoothly enter the first limiting groove 85, thereby achieving smooth engagement between the first connecting protrusion 911 and the first limiting protrusion 82, and smooth engagement between the first connector 91 and the fresh air connector 81.

[0215] Some embodiments of this application, refer to Figure 11 The first guide surface 84 is a guide slope. The extension direction of the first guide surface 84 is set at a second angle J with the first direction. The second angle J is greater than 5° and less than 60°, so as to expand the range in which the first guide surface 84 can cooperate with the first stop protrusion 83 in the vertical direction, thereby reducing the installation accuracy required when installing the first connector 91 to the fresh air connector 81 and reducing the installation difficulty.

[0216] The larger the second angle J, the greater the range within which the first guide surface 84 can mate with the first connecting protrusion 911 in the vertical direction, and the easier it is to install the first connector 91 onto the fresh air connector 81. Therefore, the angle between the extension direction of the first guide surface 84 and the first direction needs to be greater than 5° to reduce the installation difficulty of the first connector 91 onto the fresh air connector 81. However, the larger the second angle J, the larger the space occupied by the first guide surface 84 in the vertical direction. Therefore, the second angle J needs to be less than 60° to avoid the first guide surface 84 occupying too much space in the vertical direction, which would affect the setting of the fresh air connector 81.

[0217] In some embodiments, the second angle J can be 6°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55° or 58°, without much limitation.

[0218] Some embodiments of this application, refer to Figure 10 The fresh air inlet 801 is located at the bottom rear of the fresh air volute 8, and one end of the fresh air duct 10 is sleeved on the outside of the fresh air duct connector 9.

[0219] Understandably, the main body 1000 is usually installed on a wall. To avoid obstructing people's daily lives, the side of the main body 1000 connected to the wall is usually referred to as the back or rear side. To introduce outdoor fresh air into the fresh air duct V01, one end of the fresh air duct 10 is connected to the fresh air inlet 801, and the other end of the fresh air duct 10 is adapted to pass through the wall and connect to the outside. The fresh air inlet 801 is located at the bottom rear of the fresh air volute 8, which facilitates the connection between one end of the fresh air duct 10 and the fresh air inlet 801, reduces the length of the fresh air duct 10, and also reduces the length of the fresh air duct 10 exposed indoors, thus improving the overall aesthetics of the wall-mounted air conditioner 10000.

[0220] Some embodiments of this application, refer to Figure 5 and Figure 6 The wall-mounted air conditioner 10000 also includes: an exhaust fan 7, which is a centrifugal fan with axial air intake and radial air outlet. The exhaust fan 7 is located on the side of the heat exchange fan away from the first motor, and is arranged with the fresh air fan 6 in the length direction of the main body 1000. The second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously when in operation.

[0221] Centrifugal fans are characterized by their compact structure, large air volume, and low noise. Furthermore, fan noise decreases significantly as the speed decreases. Therefore, smaller centrifugal fans can be used for the fresh air fan 6 and exhaust fan 7 to meet the high air volume requirements. Centrifugal fans also exhibit low vibration and noise, making them less likely to resonate with the indoor heat exchanger, effectively controlling the overall vibration and noise of the wall-mounted air conditioner 10000.

[0222] In some embodiments, both the fresh air fan 6 and the exhaust fan 7 are centrifugal fans, allowing for a more rational arrangement of their airflow directions. Specifically, the fresh air fan 6 draws in air axially and exits radially, while the exhaust fan 7 draws in air axially and exits radially. The fresh air fan 6 and exhaust fan 7 draw in air from opposite ends, and then both are driven to exit radially. The flow paths of the fresh air and exhaust air do not need to overlap axially, and their paths do not need to intersect. This helps reduce the need for bends and turns in the fresh air and exhaust paths, reducing wind resistance and energy consumption, ensuring airflow, and lowering noise.

[0223] The wall-mounted air conditioner 10000 also includes: an exhaust volute 20, an exhaust duct 203 formed within the exhaust volute 20, an exhaust fan 7 installed within the exhaust volute 20, and an exhaust inlet 201 and an exhaust outlet 202 formed on the exhaust volute 20. Rotation of the exhaust fan 7 allows indoor air to enter the exhaust volute 20 through the exhaust inlet 201, and allows the indoor air entering the exhaust volute 20 to be exhausted to the outside through the exhaust outlet 202.

[0224] In this application, the exhaust volute 20 and the exhaust fan 7 constitute an exhaust module. The exhaust fan 7 is installed in the exhaust duct 203 and is used to drive airflow to be drawn in from the exhaust inlet 201 and discharged from the room through the exhaust outlet 202. The operation of the exhaust fan 7 provides the power for the flow of polluted air.

[0225] Therefore, by setting up exhaust duct 203 in conjunction with exhaust fan 7, when the indoor air is relatively polluted or the air quality is average, the exhaust fan 7 can draw away and exhaust the polluted airflow in the indoor space. After the indoor air volume is reduced, fresh air will be drawn in from the outside or from other rooms through doors and windows, thereby reducing the degree of indoor air pollution.

[0226] In this application, the second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8, and the exhaust volute 20 constitute a two-way ventilation assembly, which is installed within the main body 1000. The two-way ventilation assembly can provide fresh air to the room and exhaust indoor air to the outside.

[0227] It should be noted that the operating mode of the bidirectional ventilation component in the wall-mounted air conditioner 10000 can be set according to actual usage needs. In some embodiments, the bidirectional ventilation component can operate in both fresh air mode and exhaust mode simultaneously, that is, the fresh air duct V01 and the exhaust air duct 203 can be opened at the same time. While the indoor stale airflow flows to the outdoor space, the outdoor fresh airflow can also enter the indoor space. Through the combination of inlet and outlet airflow, the efficiency of indoor airflow improvement is increased, thereby meeting the user's needs in a timely manner when the user urgently needs to exhaust or refresh the indoor air.

[0228] Furthermore, because it simultaneously exhausts indoor air to the outside and replenishes it with fresh outdoor air, maintaining a sufficient indoor air volume, it makes it easier to remove indoor air. For example, if there are irritating gases (such as gases released from home decoration materials), gas, or other gas leaks indoors, a two-way ventilation component can be set up to operate in both fresh air and exhaust modes simultaneously, achieving rapid air exchange. Compared to conventional fresh air structures that simply introduce fresh air, the two-way ventilation component of this application has a larger purification flow rate per unit time, higher ventilation efficiency, and faster purification effect.

[0229] Furthermore, the ventilation system avoids rapid airflow like opening a window, which could cause drastic temperature changes and discomfort for occupants due to sudden temperature fluctuations. Also, the main structure is positioned at a relatively high elevation, ensuring that ventilation points are not too close to people, thus preventing discomfort.

[0230] In other embodiments, the bidirectional ventilation component can selectively operate in either a fresh air mode or an exhaust mode. Specifically, when the bidirectional ventilation component is in fresh air mode, the exhaust mode is turned off, and only the fresh air duct V01 is ventilated, while the exhaust duct 203 is not ventilated. Alternatively, when the bidirectional ventilation component is in exhaust mode, the fresh air mode is turned off, and in this case, the fresh air duct V01 is not ventilated, while the exhaust duct 203 is ventilated.

[0231] In some embodiments, the wall-mounted air conditioner 10000 is equipped with a two-way ventilation assembly, such as... Figure 6 As shown, the bidirectional ventilation assembly includes: a second motor 5, a fresh air fan 6, an exhaust fan 7, a fresh air volute 8, and an exhaust volute 20.

[0232] In this embodiment, the fresh air fan 6 is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan away from the first motor. The fresh air fan 6 is located between the heat exchange fan and the motor housing 531, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0233] In this embodiment, the exhaust fan 7 is a centrifugal fan with axial air intake and radial air exhaust. Along the length of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is fitted onto the radially outer side of the motor housing 531 and is fixedly connected to the motor housing 531. When in operation, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously.

[0234] In this embodiment, such as Figure 6 As shown, a fresh air duct V01 is formed inside the fresh air volute 8, and the fresh air fan 6 is installed inside the fresh air volute 8, as follows. Figure 10 As shown, a fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8. The rotation of the fresh air fan 6 allows outdoor air to enter the fresh air volute 8 through the fresh air inlet 801, and allows outdoor air entering the fresh air volute 8 to enter the room through the fresh air outlet 802.

[0235] In this embodiment, such as Figure 6 As shown, the exhaust volute 20 is located on the side of the fresh air volute 8 facing the second motor 5. An exhaust duct 203 is formed inside the exhaust volute 20. An exhaust fan 7 is installed inside the exhaust volute 20. An exhaust inlet 201 and an exhaust outlet 202 are formed on the exhaust volute 20. The rotation of the exhaust fan 7 allows indoor air to enter the exhaust volute 20 through the exhaust inlet 201 and allows the indoor air entering the exhaust volute 20 to be exhausted to the outside through the exhaust outlet 202.

[0236] In this embodiment, the second motor 5 is located at the end of the main body 1000 along its length, and the axial direction of the second motor 5 is arranged along the length of the main body 1000. The second motor 5 serves as the common power source for both the fresh air module and the exhaust air module of the bidirectional ventilation assembly. To ensure the operation of both the fresh air module and the exhaust air module, the second motor 5 needs sufficient operating power to drive a sufficient airflow. Based on the power requirements of the second motor 5, the second motor 5 needs to be of a sufficiently large size.

[0237] In this embodiment, given that the dimensions of the second motor 5 are roughly determined, the arrangement of the fresh air module and the exhaust module considers how to utilize the space occupied by the second motor 5 while minimizing the amount of additional space required. Specifically, in this embodiment, both the fresh air fan 6 and the exhaust fan 7 are centrifugal fans connected to the same motor. This not only saves on the number of motors but also ensures that the two centrifugal fans are stacked along the axial direction of the second motor 5, that is, stacked along the length of the main body 1000.

[0238] In this embodiment, the centrifugal fan itself is relatively flat in the axial direction. The stacking of the fresh air fan 6 and the exhaust fan 7 in this way can reduce the overall axial dimension occupied, so that the length of the main body 1000 does not need to be too long. Since the fresh air fan 6 and the exhaust fan 7 are connected to the same motor and rotate synchronously, they are in sync and do not need to be separated by a large gap. The axial distance between the fresh air fan 6 and the exhaust fan 7 can be arranged relatively close.

[0239] It should be noted that when describing the internal structure of the bidirectional ventilation assembly, the terms "axial", "radial", and "circumferential" are all based on the axial, radial, and circumferential directions of the motor. That is, the direction parallel to the extension direction of the output shaft 532 of the second motor 5 is the axial direction, the direction perpendicular to the extension direction of the output shaft 532 is the radial direction, and the direction around the output shaft 532 is the circumferential direction.

[0240] In some embodiments of this application, reference is made to Figures 16-20 The exhaust outlet 202 is located at the bottom of the exhaust volute 20 and opens downwards.

[0241] The wall-mounted air conditioner 10000 also includes: an exhaust pipe connector 30, which is used to connect the exhaust duct 40. The exhaust pipe connector 30 is adapted to be installed from back to front to the exhaust outlet 202 to connect the exhaust outlet 202 and the exhaust duct 40.

[0242] One end of the exhaust duct 40 is connected to the exhaust outlet 202, and the other end of the exhaust duct 40 is adapted to be connected to the outside, so that when the exhaust fan 7 rotates, the air in the exhaust duct 203 can be exhausted from the exhaust outlet 202 to the room along the exhaust duct 40.

[0243] Since the exhaust outlet 202 opens downwards, at least a portion of the exhaust duct 40 needs to extend vertically in order to connect with the exhaust outlet 202 and allow air to flow out along the exhaust duct 40.

[0244] In the embodiment where the exhaust duct connector 30 is installed vertically to the exhaust outlet 202, the exhaust duct 40 has a certain length in the vertical direction, while the space in the housing 1 and the exhaust volute 20 is limited in the vertical direction. Furthermore, since the housing 1 is a long, narrow shell with its length horizontally aligned, the opening size in the vertical direction is small. This makes the movement of the exhaust duct connector 30 and the exhaust duct 40 in the vertical direction for mating with the exhaust duct 40 very inconvenient, resulting in significant installation difficulties. Simultaneously, the exhaust duct 40 will partially obstruct the exhaust outlet 202 in the vertical direction, hindering observation of the assembly of the exhaust duct connector 30 and the exhaust outlet 202, further complicating the installation process.

[0245] This application allows the exhaust pipe connector 30 to be installed from back to front to the exhaust outlet 202. On the one hand, this installation procedure is more in line with human operating habits, making it easier for operators to apply force to the exhaust pipe connector 30 from back to front to install the exhaust pipe connector 30 to the exhaust outlet 202.

[0246] On the other hand, the housing 1 is a long strip-shaped shell with its length direction set horizontally. Therefore, the housing 1 can form a large opening on the rear side, giving the housing 1 and the exhaust volute 20 a large space in the front-to-back direction. This provides the operator with a large operating space when the exhaust pipe connector 30 and the exhaust duct 40 are moved in the front-to-back direction to match the exhaust outlet 202, which facilitates the operator's operation, reduces the difficulty of operation, and reduces the difficulty of installation.

[0247] In addition, since the exhaust outlet 202 opens downwards, the exhaust duct 40 will block the exhaust outlet 202 to a certain extent in the vertical direction. This makes the assembly direction of the exhaust duct connector 30 when it is installed at the exhaust outlet 202 different from the extension direction of the exhaust duct 40. This facilitates the adjustment and observation of the alignment between the exhaust duct connector 30 and the exhaust outlet 202, thereby improving assembly efficiency and reducing assembly difficulty.

[0248] In some embodiments of this application, reference is made to Figure 16 and Figure 17 The exhaust volute 20 includes an exhaust connector 21, which defines an exhaust outlet 202.

[0249] refer to Figure 20 and Figure 21The exhaust pipe connector 30 includes a second connector 31, which is connected to the exhaust connector 21.

[0250] The exhaust pipe connector 30 also includes a second connecting pipe 32, one end of which is connected to one side of the second connector 31 for connecting the exhaust duct 40, so that the exhaust connector 21 and the exhaust duct 40 can be connected by the second connector 31, thereby connecting the exhaust outlet 202 to the exhaust duct 40.

[0251] In some embodiments, reference Figure 20 and Figure 21 The exhaust duct 40 is fixed to the second connecting pipe 32 to fix the exhaust duct 40 to the exhaust duct connector 30. Then, when the second connector 31 is connected to the exhaust connector 21, the exhaust outlet 202 is connected to the exhaust duct 40, so that the air in the exhaust duct 203 can flow to the outside along the exhaust duct 40.

[0252] In some embodiments of this application, reference is made to Figures 17-21 The second connector 31 is fitted onto the outside of the exhaust connector 21. The second connector 31 has a second connecting protrusion 311, and the outside of the exhaust connector 21 has a second limiting protrusion 22 extending in a third direction. During the process of installing the exhaust pipe connector 30 to the exhaust connector 21, the second connecting protrusion 311 slides along the third direction on the surface of the second limiting protrusion 22 opposite to the second pipe 32 until the second connecting protrusion 311 and the second limiting protrusion 22 are engaged in place, so that the second connecting protrusion 311 is placed on the second limiting protrusion 22, thereby connecting the second connector 31 and the exhaust connector 21, and thus connecting the exhaust outlet 202 and the exhaust duct 40.

[0253] The third direction is the front-back direction of the main body 1000, or it is set at an angle to the front-back direction, so that when the exhaust pipe connector 30 is installed on the exhaust connector 21 from back to front, the second connecting protrusion 311 can slide and cooperate with the second limiting protrusion 22, thereby realizing the smooth connection between the second connector 31 and the exhaust connector 21.

[0254] In some embodiments of this application, the rear end of the second limiting protrusion 22 on the side opposite to the second pipe 32 has a second guide surface. The extension direction of the second guide surface is set at an angle to the third direction, which is used to guide the second connecting protrusion 311 to slide on the surface of the second limiting protrusion 22 on the side opposite to the second pipe 32.

[0255] Specifically, a second guide surface is provided at the rear end of the side surface of the second limiting protrusion 22 that is away from the second pipe 32. The extension direction of the second guide surface is set at an angle to the third direction, so as to expand the range in which the second guide surface can cooperate with the second connecting protrusion 311 in the vertical direction, thereby reducing the fitting accuracy between the second connecting protrusion 311 and the second limiting protrusion 22 when the second connector 31 is installed at the exhaust connector 21, and making it easier to reduce the installation difficulty.

[0256] For example, the upper surface of the second connecting protrusion 311 slides into the upper surface of the second limiting protrusion 22, and the second guiding surface extends obliquely in the forward and upward direction.

[0257] When the second connector 31 is installed to the exhaust connector 21 from back to front, the second connecting protrusion 311 can first cooperate with the second guide surface. The second guide surface guides the second connecting protrusion 311 to gradually slide towards the upper surface of the second limiting protrusion 22, so that the second connecting protrusion 311 can slide forward smoothly on the upper surface of the second limiting protrusion 22, thereby achieving smooth cooperation between the second connecting protrusion 311 and the second limiting protrusion 22.

[0258] Specifically, due to limitations such as the observation angle, when installing the second connector 31 to the exhaust connector 21 from back to front, the initial position of the second connector 31 is easily lower than its position when it is installed in place, causing the position of the second connecting protrusion 311 to be lower than the upper surface of the second limiting protrusion 22. Although the position of the second connecting protrusion 311 is lower than the upper surface of the second limiting protrusion 22, the second connecting protrusion 311 can first slide and engage with the second guide surface. The second guide surface guides the movement of the second connecting protrusion 311. In this way, when a forward force is applied to the second connector 31, the second guide surface can guide the second connecting protrusion 311 to move upward and forward, so that the second connector 31 moves upward and forward.

[0259] In other words, when the second guide surface engages with the second connecting protrusion 311, although only a forward force is applied to the second connector 31, under the guidance of the second guide surface, the second connecting protrusion 311 can move upward and forward to a position corresponding to the upper surface of the second limiting protrusion 22, and the second connector 31 can move upward and forward to a position corresponding to the exhaust outlet 202, thereby achieving smooth engagement of the second connecting protrusion 311 and the second limiting protrusion 22, and smooth engagement of the second connector 31 and the exhaust connector 21.

[0260] In some embodiments of this application, the second guide surface is a guide slope, and the angle between the extension direction of the second guide surface and the third direction is greater than 5° and less than 60°, so as to expand the range in which the second guide surface can cooperate with the second connecting protrusion 311 in the vertical direction, thereby reducing the installation accuracy required when installing the second connector 31 to the exhaust connector 21 and reducing the installation difficulty.

[0261] The larger the angle between the extension direction of the second guide surface and the third direction, the greater the range in which the second guide surface can mate with the second connecting protrusion 311 in the vertical direction, and the easier it is to install the second connector 31 to the exhaust connector 21. Therefore, the angle between the extension direction of the second guide surface and the first direction needs to be greater than 5° to reduce the installation difficulty of installing the second connector 31 to the exhaust connector 21. However, the larger the angle between the extension direction of the second guide surface and the third direction, the more space the second guide surface occupies in the vertical direction. Therefore, the angle between the extension direction of the second guide surface and the third direction needs to be less than 60° to avoid the second guide surface occupying too much space in the vertical direction, which would affect the setting of the exhaust connector 21.

[0262] In some embodiments, the angle between the extension direction of the second guide surface and the third direction can be 6°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55° or 58°, without further restrictions.

[0263] Some embodiments of this application, refer to Figure 17 and Figure 21 The outer surface of the exhaust connector 21 has an exhaust sealing surface 211, which surrounds the exhaust outlet 202. The second connector 31 has an exhaust mating surface 312 on the side facing the exhaust connector 21, which surrounds the second pipe 32.

[0264] With the exhaust pipe connector 30 installed on the exhaust connector 21, the exhaust mating surface 312 and the exhaust sealing surface 211 are in contact and fit together, and both are arranged around the exhaust outlet 202 to achieve a sealed connection between the exhaust pipe connector 30 and the exhaust connector 21, reducing the possibility of air leakage from the outer edge of the exhaust outlet 202 when air flows through the connection between the exhaust pipe connector 30 and the exhaust connector 21.

[0265] In some embodiments, the contact fit between the exhaust mating surface 312 and the exhaust sealing surface 211 achieves a sealed connection between the exhaust pipe joint 30 and the exhaust connector 21.

[0266] In other embodiments, at least one of the upper surface of the exhaust pipe connector 30 and the lower surface of the exhaust connector 21 is provided with a second mating groove. The second mating groove is located inside the exhaust mating surface 312 and the exhaust sealing surface 211. The second mating groove is arranged around the exhaust outlet 202. A second sealing ring is provided in the second mating groove. The second sealing ring is used to seal the gap between the upper surface of the exhaust pipe connector 30 and the lower surface of the exhaust connector 21, thereby achieving a sealed connection between the exhaust pipe connector 30 and the exhaust connector 21.

[0267] Specifically, this embodiment has a good sealing effect on the exhaust pipe joint 30 and the exhaust connector 21, respectively by utilizing the contact fit of the exhaust mating surface 312 and the exhaust sealing surface 211, and by utilizing the second sealing ring to achieve a sealed connection between the exhaust pipe joint 30 and the exhaust connector 21.

[0268] Some embodiments of this application, refer to Figure 17 and Figure 21 The second limiting protrusion 22 extends along a third direction on the side surface opposite to the second pipe 32, and the exhaust sealing surface 211 extends along a fourth direction. The fourth direction is set at an angle to the third direction. During the process of installing the exhaust pipe connector 30 on the exhaust connector 21, the exhaust mating surface 312 slides along the fourth direction on the exhaust sealing surface 211 until the exhaust mating surface 312 and the exhaust sealing surface 211 are properly mated.

[0269] The fourth direction is set at an angle to the third direction, which means that the extension direction of the exhaust mating surface 312 is inconsistent with the sliding direction (the third direction). This results in the second connecting protrusion 311 sliding and engaging with the second limiting protrusion 22 on the side surface away from the second pipe 32 along the third direction, and the exhaust mating surface 312 sliding on the exhaust sealing surface 211 along the fourth direction. The force generated between the exhaust mating surface 312 and the exhaust sealing surface 211 includes a third component force and a fourth component force. The third component force is parallel to the fourth direction, and the fourth component force is perpendicular to the fourth direction.

[0270] Specifically, the third component force is used to push the exhaust mating surface 312 to slide forward on the exhaust sealing surface 211 along the fourth direction. The fourth component force causes a compressive force between the exhaust mating surface 312 and the exhaust sealing surface 211, thereby creating a frictional force between the exhaust mating surface 312 and the exhaust sealing surface 211.

[0271] The magnitude of the frictional force is related to the compressive force between the exhaust mating surface 312 and the exhaust sealing surface 211, as well as the contact area between them. When the exhaust pipe connector 30 is installed onto the exhaust connector 21 from back to front, the contact area between the exhaust mating surface 312 and the exhaust sealing surface 211 gradually increases, leading to a gradual increase in the frictional force between them. This results in a tighter fit between the exhaust mating surface 312 and the exhaust sealing surface 211, ensuring a sealed connection between the exhaust pipe connector 30 and the exhaust connector 21 when they are properly engaged.

[0272] In some embodiments, the upper surface of the second limiting protrusion 22 is slidably engaged with the lower surface of the second connecting protrusion 311, and the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 are sandwiched between the lower surface of the second connecting protrusion 311 and the exhaust mating surface 312. The upper surface of the second limiting protrusion 22 extends obliquely in the forward and upward direction, and the exhaust sealing surface 211 extends horizontally in the front-back direction. In the back-forward direction, the distance between the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 in the vertical direction gradually increases.

[0273] In some examples, the lower surface of the second connecting protrusion 311 extends horizontally in the front-back direction, and the exhaust mating surface 312 extends horizontally in the front-back direction. In the direction from back to front, the lower surface of the second connecting protrusion 311 and the exhaust mating surface 312 are equidistant in the vertical direction.

[0274] In the backward direction, the distance between the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 gradually increases in the vertical direction, while the distance between the lower surface of the second connecting protrusion 311 and the exhaust mating surface 312 is the same in the vertical direction. Therefore, when the exhaust pipe connector 30 is installed onto the exhaust connector 21 from the backward direction, the compressive force between the upper surface of the second limiting protrusion 22 and the lower surface of the second connecting protrusion 311 gradually increases, and the compressive force between the exhaust sealing surface 211 and the exhaust mating surface 312 also gradually increases. As the mating area of ​​the exhaust sealing surface 211 and the exhaust mating surface 312 gradually increases, the friction between the exhaust sealing surface 211 and the exhaust mating surface 312 also gradually increases until the exhaust mating surface 312 and the exhaust sealing surface 211 are properly mated, and the exhaust sealing surface 211 and the exhaust mating surface 312 can fit tightly together.

[0275] In other examples, refer to Figure 21The lower surface of the second connecting protrusion 311 extends obliquely in the forward and upward direction, and the exhaust mating surface 312 extends horizontally in the front and back direction. In the direction from back to front, the distance between the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 in the vertical direction gradually increases.

[0276] When the lower surface of the second connecting protrusion 311 slides upward and forward on the upper surface of the second limiting protrusion 22, the exhaust mating surface 312 is adapted to gradually slide towards the exhaust sealing surface 211 in the upward and forward direction until the exhaust mating surface 312 and the exhaust sealing surface 211 are properly engaged, and the exhaust sealing surface 211 and the exhaust mating surface 312 can fit tightly together.

[0277] In this way, when the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 initially enter between the lower surface of the second connecting protrusion 311 and the exhaust mating surface 312, the extrusion mating surface 312 and the exhaust sealing surface 211 have not yet come into contact or have come into contact, and the squeezing force and friction between them are small. This makes it easier to achieve the docking of the exhaust pipe joint 30 and the exhaust connector 21 first, and makes it easier to apply force later to make the exhaust pipe joint 30 and the exhaust connector 21 fit in place, so that the exhaust sealing surface 211 and the exhaust mating surface 312 can fit tightly together.

[0278] In some embodiments of this application, one of the third direction and the fourth direction is the front-back direction of the main body 1000, and the other is set at an angle to the front-back direction of the main body 1000; or, both the third direction and the fourth direction are set at an angle to the front-back direction of the main body 1000.

[0279] For example, the third direction extends along the front-back direction, and the fourth direction is set at an angle to the front-back direction.

[0280] For example, the fourth direction extends along the front-back direction, while the third direction is set at an angle to the front-back direction.

[0281] For example, both the third and fourth directions are set at an angle to the front and rear directions, and the third and fourth directions intersect.

[0282] All three examples above can achieve different directions for the third and fourth directions. When the exhaust pipe connector 30 is installed onto the exhaust connector 21 from back to front, and the exhaust pipe connector 30 is slid forward, as the second connecting protrusion 311 moves along the third direction on the second limiting protrusion 22, the fit between the exhaust mating surface 312 and the exhaust sealing surface 211 becomes increasingly tight. This facilitates reducing or preventing assembly gaps between the exhaust mating surface 312 and the exhaust sealing surface 211, achieving a tight fit between them. The exhaust mating surface 312 and the exhaust sealing surface 211 are then used to achieve a sealed connection between the exhaust pipe connector 30 and the exhaust connector 21.

[0283] Specifically, in the embodiment where the upper surface of the second limiting protrusion 22 slides with the lower surface of the second connecting protrusion 311, and in the embodiment where the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 are sandwiched between the lower surface of the second connecting protrusion 311 and the exhaust mating surface 312, the distance between the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 gradually increases in the vertical direction from back to front. Thus, when the exhaust pipe connector 30 is installed onto the exhaust connector 21 from back to front, the compressive and frictional forces between the exhaust sealing surface 211 and the exhaust mating surface 312 gradually increase. Consequently, when the exhaust sealing surface 211 and the exhaust mating surface 312 are properly engaged, they fit tightly together, achieving a sealed connection between the exhaust pipe connector 30 and the exhaust connector 21.

[0284] In some embodiments of this application, reference is made to Figure 18 , Figure 19 The third direction and the fourth direction are set at a third angle M, where the third angle M is greater than 0° and less than 45°.

[0285] The size of the third angle M determines the distance that the exhaust mating surface 312 moves toward the exhaust sealing surface 211 when the exhaust pipe joint 30 moves forward a certain distance. In other words, the size of the third angle M determines the extent to which the extrusion mating surface 312 and the exhaust sealing surface 211 increase in pressure and friction when the exhaust pipe joint 30 moves forward a certain distance.

[0286] If the third angle M is too small, the squeezing force and friction between the exhaust mating surface 312 and the exhaust sealing surface 211 will be small when they are properly mated, which may prevent the exhaust mating surface 312 and the exhaust sealing surface 211 from fitting tightly together.

[0287] If the third angle M is too large, the force required to be applied to the exhaust pipe connector 30 during assembly will be greater, making assembly and disassembly more difficult. Specifically, the larger the third angle M, the greater the distance that the exhaust mating surface 312 moves towards the exhaust sealing surface 211 when the exhaust pipe connector 30 moves forward a certain distance. This results in a greater increase in the compressive and frictional forces between the exhaust mating surface 312 and the exhaust sealing surface 211, thus requiring a larger force to be applied to the exhaust pipe connector 30 during assembly.

[0288] The size of the third angle M can be determined based on the distance that the exhaust pipe connector 30 needs to move forward, the distance that the exhaust mating surface 312 needs to move upward toward the exhaust sealing surface 211, and the amount of extrusion force and friction required between the exhaust mating surface 312 and the exhaust sealing surface 211 when they are in place.

[0289] In some embodiments, for example, the third angle M can be 1°, 2°, 3°, 4°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, or 44°.

[0290] In some embodiments of this application, the second connector 31 includes: a second end plate 313, a second opening 3131 on the second end plate 313, the second opening 3131 being disposed opposite to and connected to the exhaust outlet 202, a second connecting pipe 32 being connected to one side of the thickness direction of the second end plate 313, and an exhaust mating surface 312 being located on the other side of the thickness direction of the second end plate 313.

[0291] The second port 3131 is adapted to connect the two sides of the second end plate 313 in the thickness direction. When the exhaust pipe connector 30 is installed on the exhaust connector 21, the second port 3131 connects the exhaust outlet 202 and the second connector 31. The second connector 31 connects the exhaust outlet 202 and the exhaust duct 40, so that the air in the exhaust pipe can flow to the outside through the exhaust duct 40.

[0292] refer to Figure 21 The second connector 31 further includes a second connecting flange 314, which is connected to the other side of the second end plate 313 in the thickness direction and is partially bent inward to form a second connecting protrusion 311. A second receiving groove 315 is defined between the second connecting flange 314 and the second end plate 313. The second limiting protrusion 22 and the exhaust sealing surface 211 are at least partially located within the second receiving groove 315, so that the exhaust sealing surface 211 contacts and engages with the exhaust mating surface 312.

[0293] Specifically, the lower surface of the second connecting protrusion 311 slides into the upper surface of the second limiting protrusion 22, thereby defining a second receiving groove 315 between the second connecting flange 314 and the second end plate 313. This allows the upper surface of the second limiting protrusion 22 and the exhaust sealing surface 211 to be located between the lower surface of the second connecting protrusion 311 and the exhaust mating surface 312, thus enabling the exhaust sealing surface 211 to contact and engage with the exhaust mating surface 312. The engagement of the exhaust sealing surface 211 and the exhaust mating surface 312 achieves a sealed connection between the exhaust pipe joint 30 and the exhaust connector 21.

[0294] In some embodiments, the second end plate 313 and the second connecting flange 314 can be formed by bending the sheet metal part. This is convenient to process and the process is simple. In addition, this can directly make the second connecting flange 314 and the second end plate 313 an integral part, which can improve the firmness of the connection between the second connecting flange 314 and the second end plate 313.

[0295] In some embodiments of this application, the exhaust connector 21 has second limiting protrusions 22 on the outer sides of the two side walls opposite to each other in the length direction of the main body 1000, and the exhaust sealing surface 211 is located between the two second limiting protrusions 22. The second connector 31 has second connecting protrusions 311 on both sides in the length direction of the main body 1000, and the exhaust mating surface 312 is located between the two second connecting protrusions 311. The two second connecting protrusions 311 and the two second limiting protrusions 22 are matched one-to-one, so that the exhaust pipe connector 30 on both sides in the length direction of the main body 1000 respectively matches the exhaust connector 21 on both sides in the length direction of the main body 1000, thereby limiting the relative displacement of the exhaust pipe connector 30 and the exhaust connector 21 in the length direction of the main body 1000, and improving the stability of the matching of the exhaust pipe connector 30 and the exhaust connector 21.

[0296] The exhaust sealing surface 211 is located between the two second limiting protrusions 22, and the exhaust mating surface 312 is located between the two second connecting protrusions 311. When the two second connecting protrusions 311 and the two second limiting protrusions 22 are engaged in a one-to-one correspondence, the compressive force and friction between the exhaust sealing surface 211 and the exhaust mating surface 312 can be enhanced, thereby achieving a tighter fit between the exhaust sealing surface 211 and the exhaust mating surface 312, and making the exhaust pipe joint 30 and the exhaust connector 21 seal and connect.

[0297] In some embodiments of this application, reference is made to Figure 9 and Figure 21 The second connector 31 is provided with a second connecting lug 316 at the rear end along the front-rear direction of the main body 1000. The second connecting lug 316 is fixed to the exhaust volute 20 by the second fastener 12 to fix the second connector 31 and the exhaust volute 20 together, thereby reducing the possibility of the second connector 31 and the exhaust volute 20 accidentally falling off.

[0298] The second fastener 12 can be a screw, bolt, pin, or other fastener; there are no further restrictions here.

[0299] In some embodiments, reference Figure 9 and Figure 21 The second connecting lug 316 is provided with a second fixing hole, the exhaust volute 20 is provided with a second connecting hole, and the second fastener 12 is adapted to pass through the second fixing hole and the second connecting hole to fix the second connector 31 and the exhaust connector 21 together.

[0300] In some embodiments of this application, reference is made to Figure 17 The exhaust connector 21 also has a second stop protrusion 23 on its outer side. The second stop protrusion 23 is located on the side of the second limiting protrusion 22 away from the second connecting pipe 32. The second limiting protrusion 22 and the second stop protrusion 23 define a second limiting groove 25 extending in a third direction. During the installation of the exhaust pipe connector 30 on the exhaust connector 21, the second connecting protrusion 311 is inserted into the second limiting groove 25 in a third direction. When the second connecting protrusion 311 slides in a third direction on the surface of the second limiting protrusion 22 away from the second connecting pipe 32, the second stop protrusion 23 and the second limiting protrusion 22 can simultaneously restrict the position of the second connecting protrusion 311 and restrict the sliding direction of the second limiting protrusion 22, thereby improving the stability of the sliding fit between the second connecting protrusion 311 and the second limiting protrusion 22 and improving the stability of the fit between the exhaust connector 21 and the second connector 31.

[0301] In some embodiments of this application, reference is made to Figure 17 The second stop protrusion 23 has a second guide surface 24 on the side surface facing the second limiting protrusion 22. The second guide surface 24 is close to the insertion end of the second limiting groove 25. In the third direction, the second guide surface 24 gradually approaches the second limiting protrusion 22 in the direction away from the insertion end of the second limiting groove 25. The second guide surface 24 is used to guide the second connecting protrusion 311 to slide in the direction close to the second stop protrusion 23, so that the second limiting protrusion 22 can smoothly enter the second limiting groove 25 and contact the second limiting protrusion 22 and slide with the surface of the second limiting protrusion 22 on the side away from the second pipe 32.

[0302] Specifically, the second stop protrusion 23 is located above the second limiting protrusion 22. The rear end of the second stop protrusion 23 is provided with a second guide surface 24. The second guide surface 24 extends obliquely in the forward and downward direction to expand the range in the vertical direction where the second guide surface 24 can cooperate with the second connecting protrusion 311. This reduces the fitting accuracy between the second connecting protrusion 311 and the second limiting groove 25 when the second connector 31 is installed at the exhaust connector 21, thus reducing the difficulty of installation.

[0303] When the second connector 31 is installed to the exhaust connector 21 from back to front, the second connecting protrusion 311 can first cooperate with the second guide surface 24. The second guide surface 24 guides the second connecting protrusion 311 to gradually slide towards the second stop protrusion 23, so that the second connecting protrusion 311 gradually slides towards the second limiting protrusion 22, so that the second connecting protrusion 311 can smoothly enter the second limiting groove 25 and slide cooperate with the upper surface of the second limiting protrusion 22, thereby realizing the smooth cooperation between the second connecting protrusion 311 and the second limiting protrusion 22.

[0304] Specifically, due to limitations such as the observation angle, when installing the second connector 31 to the exhaust connector 21 from back to front, the initial position of the second connector 31 is easily higher than its position when it is installed in place. This causes the position of the second connecting protrusion 311 to be higher than the lower surface of the second stop protrusion 23. Although the position of the second connecting protrusion 311 is higher than the lower surface of the second stop protrusion 23, the second connecting protrusion 311 can first slide and engage with the second guide surface 24. The second guide surface 24 guides the movement of the second connecting protrusion 311. In this way, when a forward force is applied to the second connector 31, the second guide surface 24 can guide the second connecting protrusion 311 to move downward and forward, causing the second connector 31 to move downward and forward.

[0305] In other words, when the second guide surface 24 engages with the second connecting protrusion 311, although only a forward force is applied to the second connector 31, under the guidance of the second guide surface 24, the second connecting protrusion 311 can move downward and forward to a position corresponding to the lower surface of the second stop protrusion 23, so that the second connecting protrusion 311 can smoothly enter the second limiting groove 25, thereby achieving smooth engagement between the second connecting protrusion 311 and the second limiting protrusion 22, and achieving smooth engagement between the second connector 31 and the exhaust outlet 202.

[0306] Some embodiments of this application, refer to Figure 17 The second guide surface 24 is a guide slope. The extension direction of the second guide surface 24 is set at a fourth angle K with the third direction. The fourth angle K is greater than 5° and less than 60°, so as to expand the range in which the second guide surface 24 can cooperate with the second stop protrusion 23 in the vertical direction, thereby reducing the installation accuracy required when installing the second connector 31 to the exhaust connector 21 and reducing the installation difficulty.

[0307] The larger the fourth angle K, the greater the range within which the second guide surface 24 can mate with the second connecting protrusion 311 in the vertical direction, and the easier it is to install the second connector 31 to the exhaust connector 21. Therefore, the angle between the extension direction of the second guide surface 24 and the first direction needs to be greater than 5° to reduce the installation difficulty of installing the second connector 31 to the exhaust connector 21. However, the larger the angle between the extension direction of the second guide surface 24 and the third direction, the larger the space occupied by the second guide surface 24 in the vertical direction will be. Therefore, the angle between the extension direction of the second guide surface 24 and the third direction needs to be less than 60° to avoid the second guide surface 24 occupying too much space in the vertical direction, which would affect the setting of the exhaust connector 21.

[0308] In some embodiments, the fourth angle K can be 6°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55° or 58°, without much limitation.

[0309] Some embodiments of this application, refer to Figure 16 The exhaust outlet 202 is located at the bottom rear of the exhaust volute 20, and one end of the exhaust duct 40 is sleeved on the outside of the exhaust duct connector 30.

[0310] Understandably, the main body 1000 is usually installed on the wall. To avoid obstructing people's daily lives, the side of the main body 1000 connected to the wall is usually referred to as the back or rear side. To allow the exhaust duct 40 to lead the exhaust air from the exhaust duct 203 to the outside, one end of the exhaust duct 40 is connected to the exhaust outlet 202, and the other end of the exhaust duct 40 is adapted to pass through the wall and connect to the outside. The exhaust outlet 202 is located at the bottom rear of the exhaust volute 20, which facilitates the connection between one end of the exhaust duct 40 and the exhaust outlet 202, reduces the length of the exhaust duct 40, and also reduces the length of the exhaust duct 40 exposed indoors, thus improving the overall aesthetics of the wall-mounted air conditioner 10000.

[0311] In some embodiments of this application, the second motor 5 includes a stator 51 and a rotor 52, which are the main body 1000 parts of the second motor 5. The stator 51 has a wound coil, which generates an alternating magnetic field after an alternating current is applied. The rotor 52 is induced in the alternating magnetic field and rotates.

[0312] Optionally, the rotor section 52 can be a magnetic ring or a magnetic tile. A magnetic ring is preferred for the rotor section 52, as it reduces leakage flux loss, enhances magnetic flux, and improves the power output efficiency of the second motor 5. Furthermore, using a magnetic ring results in a more uniform magnetic field distribution, better anti-interference performance, and higher mechanical precision.

[0313] The second motor 5 is an external rotor motor. In the radial direction of the stator 51, the rotor 52 is arranged around the outside of the stator 51. The second motor 5 is an external rotor motor. Not only is the structure of the external rotor motor simple, but also because the rotor 52 is arranged around the outside of the stator 51 in the radial direction, the diameter of the rotor 52 is large, which can obtain a large torque. It can be used in low-speed, high-torque, direct drive and other scenarios. That is, when the second motor 5 outputs power outward, there is no need to set a reducer to reduce speed and increase torque, saving the space occupied by the reducer.

[0314] In addition, the rotor section 52 is located radially outside the stator section 51, with a large heat dissipation area and good heat dissipation performance, which is beneficial to the stable operation of the second motor 5. Moreover, with this arrangement, the diameter of the second motor 5 can be controlled to be smaller, without encroaching on the airflow channel space.

[0315] Reference Figure 6 and Figure 7 The second motor 5 also includes a motor housing 531, which supports and protects the main body 1000 of the second motor 5. The motor housing 531 is fixedly connected to the rotor portion 52, allowing the motor housing 531 and the rotor portion 52 to rotate synchronously. This allows the rotor portion 52 to be fixed within the motor housing 531, facilitating connection to external structures.

[0316] The second motor 5 also includes an output shaft 532, which is fixedly connected to the motor housing 531, so that the output shaft 532, the motor housing 531 and the rotor 52 rotate synchronously.

[0317] Among them, one of the fresh air fan 6 and the exhaust fan 7 is connected to the output shaft 532, and the other is sleeved on the radial outside of the motor housing 531 and fixedly connected to the motor housing 531.

[0318] In some embodiments, the fresh air fan 6 is connected to the output shaft 532 of the second motor 5, and the exhaust fan 7 is fixedly connected to the motor housing 531.

[0319] The second motor 5 is an external rotor motor, and the exhaust fan 7 is fitted on the radial outside of the motor housing 531. The second motor 5 is partially embedded in the exhaust fan 7 in the motor housing 531, and partially embedded in the fresh air fan 6 in the output shaft 532. This makes the second motor 5 almost overlap with the exhaust fan 7 and the fresh air fan 6 in the length direction of the main body 1000, so that the axial portion of the exhaust fan 7 and the fresh air fan 6 outside the second motor 5 is small. This makes the overall axial dimension of the bidirectional ventilation assembly close to the axial dimension of the second motor 5, thereby making the length dimension of the main body 1000 controllable.

[0320] Furthermore, because the second motor 5 uses an external rotor motor suitable for low-speed, high-torque, and direct-drive scenarios, a reducer is unnecessary. The exhaust fan 7 can be directly mounted radially outside the motor housing 531. This not only avoids increasing the overall axial dimension of the reducer but also avoids complicating the structural layout. Simply fixing the exhaust fan 7 to the motor housing 531 and connecting the fresh air fan 6 to the output shaft 532 of the second motor 5 allows the exhaust fan 7 and fresh air fan 6 to be coaxially stacked, enabling them to rotate synchronously with a small gap, eliminating the need for excessive spacing. This also ensures that the overall axial dimension of the bidirectional ventilation assembly is close to that of the second motor 5, and the length of the main body (1000mm) is controllable.

[0321] In some embodiments, refer to Figure 6 and Figure 7 The exhaust fan 7 forms a receiving groove at the center in the radial direction, and at least a portion of the stator portion 51, at least a portion of the rotor portion 52, and at least a portion of the motor housing 531 of the second motor 5 are received in the receiving groove.

[0322] Specifically, the hub of the exhaust fan 7 forms a receiving groove, at which time the main body 1000 part of the second motor 5 (i.e., the stator part 51 and the rotor part 52) ​​and the motor housing 531 can be placed in the center of the exhaust fan 7, without obstructing the flow of exhaust air, and can make full use of the hub space of the exhaust fan 7, reducing the space occupied by the second motor 5 on the outside.

[0323] Furthermore, the hub of the exhaust fan 7 has a protective function on the outside of the second motor 5, and it can also make the center of gravity of the exhaust fan 7 as close as possible to the center of the rotor 52. As a result, the bending moment generated by the exhaust fan 7 on the second motor 5 is small, the sway of the exhaust fan 7 is small when it rotates, and the exhaust fan 7 operates stably with low energy consumption.

[0324] In some embodiments of this application, reference is made to Figure 4 The wall-mounted air conditioner also includes a purification component 51, which is installed in the fresh air duct V01 to purify the fresh air blown into the room and improve the cleanliness of the indoor air.

[0325] The purification component 51 is located at the axial air intake end of the fresh air fan 6. The rotation of the fresh air fan 6 allows outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and allows the outdoor air entering the fresh air volute 8 to be blown through the purification component 51 and then enter the room from the fresh air outlet 802.

[0326] In this way, the fresh airflow can blow almost vertically over the purification component 51, further reducing the consumption of fresh air intake and thus increasing the fresh air volume. Moreover, when the indoor heat exchanger is in cooling mode, causing condensation to form in the fresh air, the condensation can remain on the purification component 51 as the air flows through it, further preventing water from being blown out when the fresh air module exits.

[0327] Furthermore, the purification component 51 is connected to the fresh air volute 8, which facilitates the assembly of the purification component 51 and prevents it from interfering with the fresh air fan 6.

[0328] Optionally, the purification component 51 includes a filter screen that covers the axial vent. The filter screen covers the entire air intake end of the fresh air fan 6, providing a large coverage area and excellent filtration efficiency. The filter screen's placement helps ensure sufficient contact area with the flowing air, while also being lightweight and producing low noise. Optionally, the filter screen is made of HEPA mesh, thus possessing strong adsorption capacity and excellent dust filtration efficiency.

[0329] Alternatively, the filter screen can be plate-shaped, making the overall filter screen thinner and preventing it from taking up too much space in the two-way ventilation assembly.

[0330] Optionally, the filter screen can be square, which makes it easier to position and install the filter screen.

[0331] Furthermore, the filter screen is a square mesh, with its side length exceeding the diameter of the axial vent. The square mesh facilitates positioning during installation, prevents wobbling after installation, and is easy to process with minimal waste. By ensuring the filter screen's side length exceeds the diameter of the axial vent, all incoming fresh air can pass through the filter screen, resulting in high filtration cleanliness.

[0332] In some embodiments, a portion of the fresh air duct V01 forms an empty cavity, which is located on the side of the purification unit 51 away from the fresh air fan 6, and the fresh air inlet 801 communicates with the cavity.

[0333] In other words, a purification component 51 is installed in the fresh air duct V01 near the fresh air fan 6. The part of the fresh air duct V01 away from the fresh air fan 6 is a cavity, that is, the cavity is between the oncoming air of the purification component 51 and the inner surface of the fan cover. In this way, the cavity is in a negative pressure state when the fresh air fan 6 is running, so that the airflow can automatically flow into the cavity from the fresh air inlet 801, reducing the air flow resistance.

[0334] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0335] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner (10000), comprising: Body (1000), said body (1000) includes: The housing (1) has an accommodating cavity (V1) inside. The housing (1) has a heat exchange inlet (101) and a heat exchange outlet (102). In the height direction of the main body (1000), the heat exchange inlet (101) is located above the heat exchange outlet (102). An indoor heat exchanger is located within the accommodating cavity (V1); The base (3) is disposed in the accommodating cavity (V1) and a volute air duct (V03) is formed thereon; A heat exchange fan is installed inside the volute duct (V03) and located on the side of the indoor heat exchanger away from the heat exchange air inlet (101); The first motor is disposed in the accommodating cavity (V1) and located at one end of the body (1000) along its length, and is used to drive the heat exchange fan to rotate so that the air inside the air conditioner exchanges heat with the indoor space; Its characteristic is that it further includes: The second motor (5) is disposed in the accommodating cavity (V1), and the second motor (5) is located at the other end of the length direction of the main body (1000); Fresh air fan (6), the fresh air fan (6) is a centrifugal fan with axial air intake and radial air outlet, the fresh air fan (6) is located on the side of the heat exchange fan away from the first motor, and the second motor (5) drives the fresh air fan (6) to rotate in the working state; Fresh air volute (8), a fresh air duct (V01) is formed inside the fresh air volute (8), a fresh air fan (6) is installed inside the fresh air volute (8), and a fresh air inlet (801) and a fresh air outlet (802) are formed on the fresh air volute (8). The rotation of the fresh air fan (6) allows outdoor air to enter the fresh air volute (8) from the fresh air inlet (801), and allows outdoor air entering the fresh air volute (8) to enter the room from the fresh air outlet (802); The fresh air inlet (801) is located at the bottom of the fresh air volute (8) and opens downwards; Also includes: Fresh air duct connector (9), the fresh air duct connector (9) is used to connect the fresh air intake duct (10), the fresh air duct connector (9) is adapted to be installed from back to front to the fresh air inlet (801) to connect the fresh air inlet (801) and the fresh air intake duct (10).

2. The wall-mounted air conditioner (10000) according to claim 1, characterized in that, The fresh air volute (8) includes a fresh air connector (81), which defines the fresh air inlet (801); The fresh air duct connector (9) includes: The first connector (91) is connected to the fresh air connector (81); The first connecting pipe (92) has one end connected to one side of the first connector (91) for connecting the fresh air duct (10); The first connector (91) is sleeved on the outside of the fresh air connector (81) and has a first connecting protrusion (911). The outside of the fresh air connector (81) has a first limiting protrusion (82) extending along a first direction. The first direction is the front-back direction of the main body (1000) or is set at an angle to the front-back direction. During the process of installing the fresh air duct connector (9) on the fresh air connector (81), the first connecting protrusion (911) slides along the first direction on the side surface of the first limiting protrusion (82) away from the first pipe (92) until the first connecting protrusion (911) and the first limiting protrusion (82) are in place.

3. The wall-mounted air conditioner (10000) according to claim 2, characterized in that, The rear end of the first limiting protrusion (82) opposite to the side surface of the first connecting pipe (92) has a first guide surface. The extension direction of the first guide surface is set at an angle to the first direction, which is used to guide the first connecting protrusion (911) to slide on the side surface of the first limiting protrusion (82) opposite to the first connecting pipe (92).

4. The wall-mounted air conditioner (10000) according to claim 3, characterized in that, The first guide surface is a guide slope, and the angle between the extension direction of the first guide surface and the first direction is greater than 5° and less than 60°.

5. The wall-mounted air conditioner (10000) according to claim 2, characterized in that, The outer surface of the fresh air connector (81) has a fresh air sealing surface (811), which surrounds the fresh air inlet (801). The first connector (91) has a fresh air mating surface (912) on the side facing the fresh air connector (81), which surrounds the first pipe (92). When the fresh air duct connector (9) is installed on the fresh air connector (81), the fresh air mating surface (912) and the fresh air sealing surface (811) are in contact and fit together, and both are arranged around the fresh air inlet (801).

6. The wall-mounted air conditioner (10000) according to claim 5, characterized in that, The first limiting protrusion (82) extends along the first direction on the side surface opposite to the first pipe (92), and the fresh air sealing surface (811) extends along the second direction, which is set at an angle to the first direction. During the process of installing the fresh air duct connector (9) on the fresh air connector (81), the fresh air mating surface (912) slides along the second direction on the fresh air sealing surface (811) until the fresh air mating surface (912) and the fresh air sealing surface (811) are properly mated.

7. The wall-mounted air conditioner (10000) according to claim 6, characterized in that, One of the first direction and the second direction is the front-back direction of the main body (1000), and the other is set at an angle to the front-back direction of the main body (1000); Alternatively, both the first direction and the second direction are set at an angle to the front-back direction of the main body (1000).

8. The wall-mounted air conditioner (10000) according to claim 6, characterized in that, The first direction and the second direction are set at a first angle (L), which is greater than 0° and less than 45°.

9. The wall-mounted air conditioner (10000) according to claim 5, characterized in that, The first connector (91) includes: A first end plate (913) is provided with a first opening (9131), the first opening (9131) is opposite to and connected to the fresh air inlet (801), the first connecting pipe (92) is connected to one side of the thickness direction of the first end plate (913), and the fresh air mating surface (912) is located on the other side of the thickness direction of the first end plate (913). A first connecting flange (914) is connected to the other side of the first end plate (913) in the thickness direction, and a portion of it is bent inward to form the first connecting protrusion (911). Wherein, a first receiving groove (915) is defined between the first connecting flange (914) and the first end plate (913), and the first limiting protrusion (82) and the fresh air sealing surface (811) are at least partially located in the first receiving groove (915) so that the fresh air sealing surface (811) contacts and engages with the fresh air mating surface (912).

10. The wall-mounted air conditioner (10000) according to claim 5, characterized in that, The fresh air connector (81) has first limiting protrusions (82) on the outer sides of the two side walls that are opposite each other in the length direction of the main body (1000). The fresh air sealing surface (811) is located between the two first limiting protrusions (82). The first connector (91) has first connecting protrusions (911) on both sides in the length direction of the main body (1000). The fresh air mating surface (912) is located between the two first connecting protrusions (911).

11. The wall-mounted air conditioner (10000) according to claim 10, characterized in that, The first connector (91) has a first connecting lug (916) at its rear end along the front-rear direction of the main body (1000), and the first connecting lug (916) is fixed to the fresh air connector (81) by a first fastener (11).

12. The wall-mounted air conditioner (10000) according to any one of claims 2-11, characterized in that, The outer side of the fresh air connector (81) also has a first stop protrusion (83), which is located on the side of the first limiting protrusion (82) away from the first pipe (92). Wherein, a first limiting groove (85) extending along the first direction is defined between the first limiting protrusion (82) and the first stop protrusion (83). During the process of installing the fresh air duct connector (9) on the fresh air connector (81), the first connecting protrusion (911) is inserted into the first limiting groove (85) along the first direction.

13. The wall-mounted air conditioner (10000) according to claim 12, characterized in that, The first stop protrusion (83) has a first guide surface (84) on the side surface facing the first limiting protrusion (82), and the first guide surface (84) is close to the insertion end of the first limiting groove (85). In the first direction, the first guide surface (84) gradually approaches the first limiting protrusion (82) in a direction away from the insertion end of the first limiting groove (85).

14. The wall-mounted air conditioner (10000) according to claim 13, characterized in that, The first guide surface (84) is a guide slope, and the extension direction of the first guide surface (84) is set at a second angle (J) with the first direction. The second angle (J) is greater than 5° and less than 60°.

15. The wall-mounted air conditioner (10000) according to any one of claims 1-11, characterized in that, The fresh air inlet (801) is located at the bottom rear of the fresh air volute (8), and one end of the fresh air duct (10) is sleeved on the outside of the fresh air duct connector (9).

16. The wall-mounted air conditioner (10000) according to claim 1, characterized in that, Also includes: The exhaust fan (7) is a centrifugal fan with axial air intake and radial air exhaust. The exhaust fan (7) is located on the side of the heat exchange fan away from the first motor, and is arranged with the fresh air fan (6) in the length direction of the main body (1000). The second motor (5) drives the fresh air fan (6) and the exhaust fan (7) to rotate synchronously in the working state. An exhaust volute (20) is formed inside the exhaust volute (20), and an exhaust fan (7) is installed inside the exhaust volute (20). An exhaust inlet (201) and an exhaust outlet (202) are formed on the exhaust volute (20). The rotation of the exhaust fan (7) allows indoor air to enter the exhaust volute (20) from the exhaust inlet (201) and allows indoor air entering the exhaust volute (20) to be discharged to the outside from the exhaust outlet (202).

17. The wall-mounted air conditioner (10000) according to claim 16, characterized in that, The exhaust outlet (202) is located at the bottom of the exhaust volute (20) and opens downwards; Also includes: An exhaust pipe connector (30) is used to connect an exhaust duct (40). The exhaust pipe connector (30) is adapted to be installed from back to front to the exhaust outlet (202) to connect the exhaust outlet (202) and the exhaust duct (40).

18. The wall-mounted air conditioner (10000) according to claim 17, characterized in that, The exhaust volute (20) includes an exhaust connector (21), which defines the exhaust outlet (202); The exhaust pipe connector (30) includes: The second connector (31) is connected to the exhaust connector (21); The second connecting pipe (32) has one end connected to one side of the second connector (31) for connecting the exhaust duct (40); The second connector (31) is sleeved on the outside of the exhaust connector (21) and has a second connecting protrusion (311). The outside of the exhaust connector (21) has a second limiting protrusion (22) extending along a third direction. The third direction is the front-back direction of the main body (1000) or is set at an angle to the front-back direction. During the process of installing the exhaust pipe connector (30) on the exhaust connector (21), the second connecting protrusion (311) slides along the third direction on the surface of the second limiting protrusion (22) away from the second pipe (32) until the second connecting protrusion (311) and the second limiting protrusion (22) are engaged in place.

19. The wall-mounted air conditioner (10000) according to claim 18, characterized in that, The second limiting protrusion (22) has a second guide surface at its rear end on the side opposite to the second pipe (32). The extension direction of the second guide surface is set at an angle to the third direction, which is used to guide the second connecting protrusion (311) to slide on the surface of the second limiting protrusion (22) on the side opposite to the second pipe (32).

20. The wall-mounted air conditioner (10000) according to claim 19, characterized in that, The second guide surface is a guide slope, and the angle between the extension direction of the second guide surface and the third direction is greater than 5° and less than 60°.

21. The wall-mounted air conditioner (10000) according to claim 18, characterized in that, The outer surface of the exhaust connector (21) has an exhaust sealing surface (211), which surrounds the exhaust outlet (202). The second connector (31) has an exhaust mating surface (312) on the side facing the exhaust connector (21), which surrounds the second pipe (32). When the exhaust pipe connector (30) is installed on the exhaust connector (21), the exhaust mating surface (312) and the exhaust sealing surface (211) are in contact and fit together, and both are arranged around the exhaust outlet (202).

22. The wall-mounted air conditioner (10000) according to claim 21, characterized in that, The second limiting protrusion (22) extends along the third direction on the side surface opposite to the second pipe (32), and the exhaust sealing surface (211) extends along the fourth direction, which is set at an angle to the third direction; During the process of installing the exhaust pipe connector (30) on the exhaust connector (21), the exhaust mating surface (312) slides along the fourth direction on the exhaust sealing surface (211) until the exhaust mating surface (312) and the exhaust sealing surface (211) are properly engaged.

23. The wall-mounted air conditioner (10000) according to claim 22, characterized in that, One of the third direction and the fourth direction is the front-back direction of the main body (1000), and the other is set at an angle to the front-back direction of the main body (1000). Alternatively, both the third direction and the fourth direction are set at an angle to the front-back direction of the main body (1000).

24. The wall-mounted air conditioner (10000) according to claim 22, characterized in that, The third direction and the fourth direction are set at a third angle (M), where the third angle (M) is greater than 0° and less than 45°.

25. The wall-mounted air conditioner (10000) according to claim 21, characterized in that, The second connector (31) includes: The second end plate (313) is provided with a second opening (3131), the second opening (3131) is opposite to and connected to the exhaust outlet (202), the second connecting pipe (32) is connected to one side of the thickness direction of the second end plate (313), and the exhaust mating surface (312) is located on the other side of the thickness direction of the second end plate (313). The second connecting flange (314) is connected to the other side of the second end plate (313) in the thickness direction, and a portion of it is bent inward to form the second connecting protrusion (311). Wherein, a second receiving groove (315) is defined between the second connecting flange (314) and the second end plate (313), and the second limiting protrusion (22) and the exhaust sealing surface (211) are at least partially located in the second receiving groove (315) so that the exhaust sealing surface (211) contacts and engages with the exhaust mating surface (312).

26. The wall-mounted air conditioner (10000) according to claim 21, characterized in that, The exhaust connector (21) has a second limiting protrusion (22) on the outer side of the two side walls that are opposite to each other in the length direction of the main body (1000). The exhaust sealing surface (211) is located between the two second limiting protrusions (22). The second connector (31) has a second connecting protrusion (311) on both sides in the length direction of the main body (1000). The exhaust mating surface (312) is located between the two second connecting protrusions (311).

27. The wall-mounted air conditioner (10000) according to claim 26, characterized in that, The second connector (31) has a second connecting lug (316) at its rear end along the front-rear direction of the main body (1000), and the second connecting lug (316) is fixed to the exhaust volute (20) by a second fastener (12).

28. The wall-mounted air conditioner (10000) according to any one of claims 18-27, characterized in that, The exhaust connector (21) also has a second stop protrusion (23) on its outer side, the second stop protrusion (23) being located on the side of the second limiting protrusion (22) away from the second connecting pipe (32); Wherein, a second limiting groove (25) extending along the third direction is defined between the second limiting protrusion (22) and the second stop protrusion (23). During the process of installing the exhaust pipe connector (30) on the exhaust connector (21), the second connecting protrusion (311) is inserted into the second limiting groove (25) along the third direction.

29. The wall-mounted air conditioner (10000) according to claim 28, characterized in that, The second stop protrusion (23) has a second guide surface (24) on the side surface facing the second limiting protrusion (22), and the second guide surface (24) is close to the insertion end of the second limiting groove (25). In the third direction, the second guide surface (24) gradually approaches the second limiting protrusion (22) in a direction away from the insertion end of the second limiting groove (25).

30. The wall-mounted air conditioner (10000) according to claim 29, characterized in that, The second guide surface (24) is a guide slope, and the extension direction of the second guide surface (24) is set at a fourth angle (K) with the third direction, wherein the fourth angle (K) is greater than 5° and less than 60°.

31. The wall-mounted air conditioner (10000) according to any one of claims 16-27, characterized in that, The exhaust outlet (202) is located at the bottom rear of the exhaust volute (20), and one end of the exhaust duct (40) is sleeved on the outside of the exhaust duct connector (30).

32. The wall-mounted air conditioner (10000) according to any one of claims 16-27, characterized in that, The second motor (5) is an external rotor motor, and the second motor (5) includes: Stator section (51), wherein the stator section (51) has a wound coil; The rotor portion (52) is disposed around the outside of the stator portion (51) in the radial direction of the stator portion (51); Motor housing (1), the main body of the motor housing (1) is fixedly connected to the rotor part (52); Output shaft (532), which is fixedly connected to the motor housing (1); One of the fresh air fan (6) and the exhaust fan (7) is connected to the output shaft (532), and the other is sleeved on the radial outside of the motor housing (1) and fixedly connected to the motor housing (1).

Images