Wall-mounted air conditioner

Abstract

Embodiments of the present application disclose a wall-mounted air conditioner, comprising a main body. The main body comprises: a housing, a base, a heat exchange fan, and a first motor connected to the heat exchange fan. The wall-mounted air conditioner further comprises: a second motor, a fresh air fan, an exhaust fan, a fresh air volute, and an exhaust volute. The first motor and the second motor are located at the two lengthwise ends of the heat exchange fan. The fresh air fan and the exhaust fan are both centrifugal fans having an axial air inlet and a radial air outlet, the fresh air fan is located on the side of the heat exchange fan away from the first motor, and the exhaust fan is located on the side of the fresh air fan facing the second motor. A stator portion in the second motor wraps around the outer side of a rotor portion, and the fresh air fan and the exhaust fan are both connected to an output shaft of the second motor and rotate synchronously.

Description

Wall-mounted air conditioner

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202422392021.4, filed on September 29, 2024; Chinese Patent Application No. 202411377022.X, filed on September 29, 2024; Chinese Patent Application No. 202422392143.3, filed on September 29, 2024; the contents of all of the above-mentioned Chinese Patent Applications are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] Some embodiments of the present application relate to the technical field of air conditioners, in particular to a wall-mounted air conditioner. BACKGROUND

[0004] With the progress of science and technology and the improvement of people's living standards, air conditioners have gradually entered people's lives and become an indispensable item in people's work and life.

[0005] An air conditioner includes an indoor unit and an outdoor unit, which are respectively installed indoors and outdoors and are connected through corresponding pipelines and wires. Generally, in order to improve indoor air quality, the air conditioner also has a fresh air device and an exhaust device for ventilation. However, in the related technical solutions, the multifunctional air conditioner is often bulky. SUMMARY

[0006] Some embodiments of the present application propose a wall-mounted air conditioner, which can control the length size of the main body while achieving simultaneous exhaust and suction of indoor air.

[0007] In one aspect, the wall-mounted air conditioner according to some embodiments of the present application includes a main body.

[0008] The main body includes: a casing, an accommodation cavity is formed in the inside of the casing, and a heat exchange air inlet and a heat exchange air outlet are formed on the casing; a base is arranged in the accommodation cavity, and a volute tongue air duct is formed on the base; a heat exchange fan is arranged in the volute tongue air duct, and is configured to suck indoor air into the volute tongue air duct through the heat exchange air inlet when rotating, and blow air in the volute tongue air duct to the indoor from the heat exchange air outlet; and a first motor is arranged in the accommodation cavity and located at one end of the length direction of the heat exchange fan, and is configured to drive the heat exchange fan to rotate.

[0009] The main body further includes: a second motor arranged in the accommodation cavity and located at the other end of the length direction of the heat exchange fan.

[0010] The second motor comprises a rotor part, a stator part arranged outside the rotor part in the radial direction of the rotor part, and an output shaft fixedly connected with the rotor part.

[0011] The main body further comprises a fresh air fan, which is a centrifugal fan with axial air inlet and radial air outlet, and is located on the side of the heat exchange fan away from the first motor and fixedly connected with the output shaft of the second motor.

[0012] The main body further comprises an exhaust fan, which is a centrifugal fan with axial air inlet and radial air outlet, and is located on the side of the fresh air fan toward the second motor in the length direction of the main body and fixedly connected with the output shaft of the second motor.

[0013] The main body further comprises a fresh air volute, in which a fresh air duct is formed, and the fresh air fan is installed in the fresh air volute, and the fresh air volute is provided with a fresh air inlet and a fresh air outlet.

[0014] The main body further comprises an exhaust volute located on the side of the fresh air volute toward the second motor, in which an exhaust air duct is formed, and the exhaust fan is installed in the exhaust volute, and the exhaust volute is provided with an exhaust air inlet and an exhaust air outlet.

[0015] The wall-mounted air conditioner according to some embodiments of the present application can control the length of the main body while achieving simultaneous exhaust and suction of indoor air.

[0016] By adopting the motor structure in which the stator part is arranged outside the rotor part, the motor has simple structure, high output power, compact structure, good dynamic balance, and high control precision. Therefore, the motor of this structure can be selected in a small size under the condition of a certain power, which is beneficial to reducing the space occupied by the second motor in the flow channel.

[0017] By arranging the fresh air fan on the side of the exhaust fan toward the indoor heat exchanger, the loss of cold or heat in the room can be reduced, and the comfort of the fresh air blown into the room can be improved. For example, the fresh air volute is close to the indoor heat exchanger, and the fresh air sucked from the outside can absorb the cold or heat released by the indoor heat exchanger before being blown into the room, so that the fresh air is as close as possible to the indoor temperature before being blown into the room. The exhaust volute is far away from the indoor heat exchanger, and the fresh air sucked from the room absorbs less cold or heat from the indoor heat exchanger, and the loss of cold or heat to the outside is less.

[0018] The fresh air fan is arranged on the side of the exhaust fan facing the indoor heat exchanger. When the indoor heat exchanger is refrigerating, the condensate water can also be reduced into the air duct. The risk of water accumulation and bacteria breeding in the exhaust air duct and the fresh air duct is reduced, and the risk of condensate water entering the second motor and causing motor damage is reduced. The exhaust fan is located on the side of the fresh air fan away from the indoor heat exchanger. For the exhaust fan that needs to take in air from the indoor, the energy consumption of the intake air is also relatively low. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0020] FIG. 1 is a perspective view of a main body of a wall-mounted air conditioner according to some embodiments (with part of the casing hidden in the figure);

[0021] FIG. 2 is a front view of the main body of the wall-mounted air conditioner according to some embodiments (with part of the casing hidden in the figure);

[0022] FIG. 3 is a perspective view of one direction inside the main body according to some embodiments;

[0023] FIG. 4 is a perspective view of another direction inside the main body according to some embodiments;

[0024] FIG. 5 is a perspective view of one direction of a bidirectional air exchange assembly according to some embodiments;

[0025] FIG. 6 is a perspective view of another direction of the bidirectional air exchange assembly according to some embodiments;

[0026] FIG. 7 is a side view of the bidirectional air exchange assembly according to some embodiments;

[0027] FIG. 8 is a sectional view of the bidirectional air exchange assembly according to some embodiments;

[0028] FIG. 9 is a partial enlarged view of FIG. 8;

[0029] FIG. 10 is a sectional view of a second motor according to some embodiments;

[0030] FIG. 11 is an assembly view of an exhaust fan and the second motor according to some embodiments;

[0031] FIG. 12 is a perspective view of a fresh air fan according to some embodiments;

[0032] FIG. 13 is a side view of the fresh air fan according to some embodiments;

[0033] FIG. 14 is an exploded view of the second motor, the fresh air fan and the exhaust fan, and a first volute according to some embodiments;

[0034] FIG. 15 is an exploded view of the bidirectional ventilation assembly in another direction, according to some embodiments;

[0035] FIG. 16 is a perspective view of the bidirectional ventilation assembly, according to some embodiments;

[0036] FIG. 17 is a partially cutaway schematic view of the bidirectional ventilation assembly, according to some embodiments;

[0037] FIG. 18 is a perspective view of the base, according to some embodiments;

[0038] FIG. 19 is a front view of the main body of a wall-mounted air conditioner (with portions of the casing hidden), according to some embodiments;

[0039] FIG. 20 is a perspective view of the casing in a rearward direction, according to some embodiments. DETAILED DESCRIPTION

[0040] The embodiments are described in detail below with reference to the accompanying drawings, wherein like numerals indicate like elements or components in several embodiments. The embodiments described below are merely examples for explaining some embodiments of the present application and are not intended to limit some embodiments of the present application. In the description of some embodiments of the present application, it should be understood that the terms "center", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are intended to indicate the orientation or positional relationship shown in the drawings, and are merely used for convenience of description of some embodiments of the present application and simplification of the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting some embodiments of the present application. In addition, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of some embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0041] It should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in some embodiments of the present application can be understood according to the specific circumstances.

[0042] The wall-mounted air conditioner 10000 according to some embodiments of the present application is an indoor unit. The wall-mounted air conditioner 10000 is usually installed on a wall, for example, an upper region of an indoor wall.

[0043] The wall-mounted air conditioner 10000 according to some embodiments of the present application is described below with reference to the accompanying drawings.

[0044] The wall-mounted air conditioner 10000 according to some embodiments of the present application, as shown in FIG. 1 and FIG. 2, comprises a main body 1000.

[0045] The main body 1000 comprises a casing 1. As shown in FIG. 20, an accommodation cavity V1 is formed in the casing 1, and a heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the casing 1. The casing 1 can play a protective role and constitute the overall appearance structure of the wall-mounted air conditioner 10000.

[0046] Referring to FIG. 3 and FIG. 4, the main body 1000 further comprises an indoor heat exchanger 2 arranged in the accommodation cavity V1.

[0047] Referring to FIG. 3 and FIG. 4, the main body 1000 further comprises a base 3 arranged in the accommodation cavity V1. The base 3 is a mounting support structure inside the main body 1000, and the indoor heat exchanger 2 can be mounted on the base 3. Specifically, a volute tongue air duct V03 is formed on the base 3, and the indoor air entering the casing 1 is guided in the flow direction through the volute tongue air duct V03, so as to ensure that the indoor air has a small resistance when flowing through the indoor heat exchanger 2.

[0048] Referring to FIG. 4, the main body 1000 further comprises a heat exchange fan 41 arranged in the volute tongue air duct V03. In some embodiments, the heat exchange fan 41 can be selected as a cross-flow fan, which has low noise and large air volume, and the air outlet speed of the cross-flow fan is uniformly distributed along the axial direction of the cross-flow fan, which is beneficial to increase the air supply distance and air supply range. Moreover, the cross-flow fan is arranged along the length direction of the main body 1000, which is beneficial to the air flow driven to flow through the entire indoor heat exchanger 2, so as to balance the heat exchange efficiency of each position of the indoor heat exchanger 2.

[0049] Referring to FIG. 4, the main body 1000 further comprises a first motor 42 arranged in the accommodation cavity V1. The first motor 42 is used to drive the heat exchange fan 41 to rotate, so that the air inside the air conditioner exchanges heat with the indoor space.

[0050] The casing 1 is provided with the heat exchange air outlet 102 and the heat exchange air inlet 101, and when the heat exchange fan 41 operates, the indoor air is sucked into the casing 1 from the heat exchange air inlet 101, and after heat exchange with the indoor heat exchanger 2, the heat exchanged air is sent to the indoor space from the heat exchange air outlet 102.

[0051] In some embodiments, the heat exchange air inlet 101 is located above the heat exchange air outlet 102 in the height direction of the main body 1000, so that air is taken in from above and air is taken out from below. In this application, the height direction of the main body 1000 is the up-down direction.

[0052] Referring to FIG. 1 and FIG. 2, the heat exchange air inlet 101 is located above the heat exchange air outlet 102, so that air is taken in from above, which can avoid air being taken in from the heat exchange air outlet 102 and avoid the heat exchange air being directly sucked into the heat exchange air inlet 101 after being blown out from the heat exchange air outlet 102, thereby reducing the heat exchange air idling without participating in the indoor heat exchange process.

[0053] In some specific embodiments, the heat exchange air inlet 101 is located at the top of the casing 1, i.e., in an area that cannot be seen by the user, so that the heat exchange air inlet 101 is hidden, which can improve the appearance.

[0054] In some embodiments, the heat exchange air outlet 102 is located in front of the casing 1, or the heat exchange air outlet 102 is located on the front side of the casing 1 and close to the bottom. In some embodiments, the heat exchange fan 41 is located on the side of the indoor heat exchanger 2 away from the heat exchange air inlet 101. It can be understood that the heat exchange fan 41 is a power driven member for driving indoor air to exchange heat with the indoor heat exchanger 2, and is also a power driven member for air supply.

[0055] In some embodiments, as shown in FIG. 4, the first motor 42 is located at one end in the length direction of the heat exchange fan 41. In this way, the installation and maintenance of the first motor 42 are facilitated, and the overall main body 1000 does not need to be too high or too thick due to the arrangement of the first motor 42. Here, the height direction of the main body 1000 is consistent with the up-down direction, and the thickness direction of the main body 1000 is consistent with the front-rear direction.

[0056] In some embodiments, the wall-mounted air conditioner 10000 further comprises a second motor 5 (as shown in FIG. 8), which is arranged in the accommodating cavity V1 and located at the other end in the length direction of the heat exchange fan 41. The first motor 42 and the second motor 5 are located at two ends in the length direction of the heat exchange fan 41, the distance between the two motors is far, the electromagnetic interference between the two motors is small, the two motors and the heat exchange fan 41 are arranged along the length direction of the main body 1000, rather than arranged 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 a slim appearance.

[0057] Specifically, referring to FIG. 9 and FIG. 10, the second motor 5 comprises a stator part 51 and a rotor part 52, which are main parts of the second motor 5. The stator part 51 has a coil wound thereon, which generates an alternating magnetic field after being connected to alternating current, and the rotor part 52 generates an induction in the alternating magnetic field and rotates.

[0058] In some embodiments, the rotor portion 52 can be a magnetic ring or a magnetic tile. The rotor portion 52 can preferably be a magnetic ring, which can reduce magnetic loss, enhance magnetic flux, and improve the power output efficiency of the second motor 5. Moreover, when a magnetic ring is used, the magnetic field distribution is uniform, the anti-interference performance is good, and the mechanical precision is higher.

[0059] In the radial direction of the rotor portion 52, the stator portion 51 is arranged around the outside of the rotor portion 52. The second motor 5 selected is not only simple in structure, high in output power, compact in structure, good in dynamic balance, and high in control precision. Therefore, under the condition of a certain power, this type of motor can be selected in a small size, which is beneficial to reducing the occupation of the second motor 5 to the flow channel space.

[0060] Referring to FIG. 10, the second motor 5 further includes an output shaft 532 fixedly connected with the rotor portion 52. Specifically, the output shaft 532 extends along the axial direction of the second motor 5 and is arranged towards the side of the heat exchange fan 41. That is, the main body portion of the second motor 5 is spaced apart from the heat exchange fan 41 by a certain distance, which reduces the vibration transmitted from the operation of the second motor 5 to the heat exchange fan 41.

[0061] Referring to FIG. 8, the wall-mounted air conditioner 10000 further includes a fresh air fan 6, which is an axial-inlet and radial-outlet centrifugal fan. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42, and is located between the heat exchange fan 41 and the main body of the second motor 5. The fresh air fan 6 is fixedly connected with the output shaft 532 of the second motor 5. That is, the fresh air fan 6 and the output shaft 532 of the second motor 5 rotate synchronously and have no rotational activity therebetween. Of course, the fresh air fan 6 and the output shaft 532 of the second motor 5 can be detachably connected or non-detachably connected, which is not limited herein.

[0062] The fresh air fan 6 is located between the second motor 5 and the heat exchange fan 41.

[0063] Referring to FIG. 8, the wall-mounted air conditioner 10000 further includes an exhaust fan 7, which is an axial-inlet and radial-outlet centrifugal fan. In the length direction of the heat exchange fan 41, the exhaust fan 7 is located on the side of the fresh air fan 6 towards the second motor 5, and is fixedly connected with the output shaft 532 of the second motor 5. That is, the exhaust fan 7 and the output shaft 532 of the second motor 5 rotate synchronously and have no rotational activity therebetween. Of course, the exhaust fan 7 and the output shaft 532 of the second motor 5 can be detachably connected or non-detachably connected, which is not limited herein.

[0064] The fresh air fan 6 is located between the exhaust fan 7 and the heat exchange fan 41, and the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously in the working state.

[0065] The centrifugal fan itself has the characteristics of compact structure, large air volume, high static pressure, and the ability to provide sufficient pressure to ensure smooth air delivery through a longer duct or more curved duct.

[0066] The fresh air fan 6 and the exhaust fan 7 both adopt centrifugal fans, and the directions of the air flows of the fresh air fan 6 and the exhaust fan 7 can be reasonably arranged.

[0067] Specifically, the fresh air fan 6 takes in air in the axial direction and discharges air in the radial direction, the exhaust fan 7 takes in air in the axial direction and discharges air in the radial direction, the fresh air fan 6 and the exhaust fan 7 take in air from two ends away from each other, and then the fresh air and the exhaust air are both driven to be discharged in the radial direction. The flow paths of the fresh air and the exhaust air do not need to overlap in the axial direction, and the paths do not need to intersect. This helps to reduce the design of the avoidance corner of the fresh air and exhaust air paths, reduce air resistance and energy consumption, ensure air volume, and reduce noise.

[0068] Referring to FIGS. 5-8, the wall-mounted air conditioner 10000 further includes a fresh air volute 8, a fresh air duct V01 is formed in the fresh air volute 8, the fresh air fan 6 is installed in 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 fresh air fan 6 rotates to allow outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and to allow the outdoor air entering the fresh air volute 8 to enter the indoor environment from the fresh air outlet 802.

[0069] Referring to FIGS. 5-8, the wall-mounted air conditioner 10000 further includes an exhaust air volute 9, the exhaust air volute 9 is located on the side of the fresh air volute 8 facing the second motor 5, an exhaust air duct V02 is formed in the exhaust air volute 9, the exhaust air fan 7 is installed in the exhaust air volute 9, and an exhaust air inlet 901 and an exhaust air outlet 902 are formed on the exhaust air volute 9. The exhaust air fan 7 rotates to allow indoor air to enter the exhaust air volute 9 from the exhaust air inlet 901, and to allow the indoor air entering the exhaust air volute 9 to be discharged to the outdoor environment from the exhaust air outlet 902.

[0070] In some embodiments, the fresh air volute 8 and the fresh air fan 6 constitute a fresh air module. The fresh air fan 6 is arranged in the fresh air duct V01 and is used to drive air flow to be sucked in from the fresh air inlet 801 and discharged to the indoor environment through the fresh air outlet 802. The operation of the fresh air fan 6 provides the driving force for the flow of fresh air. Therefore, by arranging the fresh air duct V01 in cooperation with the fresh air fan 6, when the air in the indoor environment is relatively dirty or the air quality is general, the relatively fresh outdoor air can be driven by the fresh air fan 6 to enter the indoor environment, so as to improve the air flow environment in the indoor environment.

[0071] In some embodiments, the exhaust volute 9 and the exhaust fan 7 form an exhaust module. The exhaust fan 7 is arranged in the exhaust air duct V02 and is configured to drive the flow of air from the exhaust air inlet 901 to the exhaust air outlet 902. The operation of the exhaust fan 7 provides the driving force for the flow of the dirty air.

[0072] The second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8, and the exhaust volute 9 form a bidirectional ventilation assembly arranged in the main body 1000. The bidirectional ventilation assembly can provide fresh air to the indoor space and can exhaust indoor air to the outdoor space.

[0073] It should be noted that the operation mode of the bidirectional ventilation assembly in the wall-mounted air conditioner 10000 can be set according to actual use requirements. In some embodiments, the bidirectional ventilation assembly can operate in the fresh air mode and the exhaust air mode at the same time, that is, the fresh air duct V01 and the exhaust air duct V02 can be opened at the same time. In this way, the flow of the dirty air in the indoor space to the outdoor space can be combined with the flow of the fresh air from the outdoor space to the indoor space, and the air flow driving combination of the in-out air flow can be achieved.

[0074] In addition, since the fresh air from the outdoor space is supplied to the indoor space while the dirty air in the indoor space is exhausted to the outdoor space, the amount of air in the indoor space is maintained, and the indoor air is more easily exhausted. For example, if there is a leakage of irritating gas (such as gas released by home decoration materials), coal gas, or other gas in the indoor space, the bidirectional ventilation assembly can be set to operate in the fresh air mode and the exhaust air mode at the same time to achieve rapid ventilation. Compared with the conventional fresh air structure that simply introduces fresh air, the bidirectional ventilation assembly has a larger purification flow per unit time, a higher ventilation efficiency, and a faster purification effect.

[0075] When ventilating, the ventilation speed should not be too fast to cause a large change in the indoor temperature, which can cause discomfort to the people in the indoor space due to a sudden increase or decrease in the temperature. In addition, the main body 1000 is located at a high position, and the ventilation position is not too close to the people, which can avoid causing discomfort to the people.

[0076] In other embodiments, the bidirectional ventilation assembly can operate in the fresh air mode or the exhaust air mode. That is, when the bidirectional ventilation assembly is started in the fresh air mode, the exhaust air mode is stopped, and only the fresh air duct V01 is ventilated. Alternatively, when the bidirectional ventilation assembly is started in the exhaust air mode, the fresh air mode is stopped, and only the exhaust air duct V02 is ventilated.

[0077] In some embodiments, the bidirectional ventilation assembly is arranged in the wall-mounted air conditioner 10000, as shown in FIG. 8. The bidirectional ventilation assembly includes the second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8, and the exhaust volute 9.

[0078] Since the bidirectional air exchange assembly is arranged in the wall-mounted air conditioner 10000, the wall-mounted air conditioner 10000 has size and weight limitations due to being mounted on a wall. To avoid excessive increase in the size and weight of the wall-mounted air conditioner 10000 after the bidirectional air exchange assembly is added, the application makes many restrictions and optimizations when designing the bidirectional air exchange assembly, so that the designed wall-mounted air conditioner 10000 has practical use and promotion value.

[0079] In this embodiment, the second motor 5 is located at the end of the length direction of the heat exchange fan 41, and the axial direction of the second motor 5 is arranged along the length direction of the heat exchange fan 41. The second motor 5 is the common power source of the fresh air module and the exhaust air module of the bidirectional air exchange assembly. In order to ensure the operation of the fresh air module and the exhaust air module, the second motor 5 needs to have enough operating power to drive enough air flow. Based on the power requirement of the second motor 5, the second motor 5 needs to be large enough in size.

[0080] In this embodiment, under the premise that the size parameters of the second motor 5 are basically determined, when arranging the fresh air module and the exhaust air module, consideration is given to how to use the space where the second motor 5 is located to occupy as little additional space as possible. In this embodiment, the fresh air fan 6 and the exhaust air fan 7 are both centrifugal fans and are connected to the same motor, which not only saves the number of motors, but also keeps the two centrifugal fans stacked along the axial direction of the second motor 5, that is, the two centrifugal fans are stacked along the length direction of the main body 1000.

[0081] In this embodiment, the centrifugal fan itself is relatively flat in the axial direction, and the stacking of the fresh air fan 6 and the exhaust air fan 7 can reduce the overall axial size 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 air fan 7 are connected to the same motor and rotate synchronously, they are in step with each other and do not need too large a gap between them. The axial distance between the fresh air fan 6 and the exhaust air fan 7 can be arranged relatively close.

[0082] It should be noted that when referring to "axial direction", "radial direction" and "circumferential direction", the axial direction, radial direction and circumferential direction of the motor are taken as the reference, 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.

[0083] In this embodiment, the indoor air is discharged outdoors through the exhaust air module, and by setting the exhaust air volume to be less than the fresh air volume, the cold loss can be reduced. Therefore, the second motor 5 occupies the space of the exhaust air duct V02, leaving more space for the fresh air duct V01, which is conducive to ensuring a large fresh air volume.

[0084] In this embodiment, the fresh air module and the exhaust air module are effectively integrated, and the two modules reasonably utilize their respective structural characteristics and spatial characteristics to complete the flattening design. The overall size and weight of the bidirectional air exchange assembly are reduced, and the bidirectional air exchange assembly becomes light and the air ducts do not interfere with each other. The bidirectional air exchange assembly is arranged at one end of the length direction of the heat exchange fan 41. Compared with the main body without the bidirectional heat exchange assembly, only the transverse length is increased, and the height and thickness of the main body 1000 can be substantially unchanged or slightly changed. The shape of the main body 1000 is as flat as possible, and the wall-mounted air conditioner 10000 can be hung on the wall without affecting the indoor space layout due to being too conspicuous, and the wall-mounted air conditioner 10000 can be fixed without being too heavy, thereby reducing the risk of falling from the wall.

[0085] In some embodiments, in the height direction of the main body 1000, the fresh air inlet 801 is located below the main body 1000. It can be understood that the fresh air inlet 801 needs to be connected to a pipeline to introduce outdoor air, which is referred to as a fresh air introduction pipe 141 (as shown in FIG. 2) herein. The fresh air introduction pipe 141 can be a part of the wall-mounted air conditioner 10000, or a fresh air introduction pipe 141 configured by the user after purchasing the wall-mounted air conditioner 10000.

[0086] The fresh air inlet 801 is arranged below the main body 1000, and the fresh air introduction pipe 141 can be connected to the fresh air inlet 801 from below. The connection extends in the up-down direction, rather than in the front-rear direction to make the main body 1000 too thick, so that the wall-mounted air conditioner 10000 can still maintain a flat shape. Moreover, the part of the fresh air volute 8 where the fresh air fan 6 is installed is circular, and the axis of the fresh air volute 8 extends in the length direction of the main body 1000, so that there is a space on the front side and the rear side of the bottom of the circle. The fresh air inlet 801 can be arranged to connect the fresh air introduction pipe 141 in this space, so that the connection between the fresh air introduction pipe 141 and the fresh air inlet 801 can be placed in this space without occupying additional space, thereby controlling the height of the main body 1000.

[0087] In some embodiments, in the height direction of the main body 1000, the exhaust air outlet 902 is located below the main body 1000. It can be understood that the exhaust air outlet 902 needs to be connected to a pipeline to guide indoor air to the outside, which is referred to as an exhaust air outlet pipe 142 (as shown in FIG. 2) herein. The exhaust air outlet pipe 142 can be a part of the wall-mounted air conditioner 10000, or an exhaust air outlet pipe 142 configured by the user after purchasing the wall-mounted air conditioner 10000.

[0088] The exhaust outlet 902 is arranged below the main body 1000, and the exhaust outlet 902 is connected with the exhaust outlet pipe 142 from below. The connection extends in the up-down direction rather than the front-rear direction, so that the main body 1000 is not too thick, and the wall-mounted air conditioner 10000 can still have a flat appearance. Moreover, the part of the exhaust volute 9 where the exhaust fan 7 is arranged is circular, and extends along the length direction of the main body 1000 based on the axis of the exhaust volute 9. The circular shape has free space on the front side and the rear side of the bottom, and based on the characteristics of the exhaust fan 7, the exhaust volute 9 has a diffuser section arranged in the up-down direction and arranged in the free space on the front side or the rear side. The exhaust outlet 902 is arranged to connect with the exhaust outlet pipe 142, so that the connection between the exhaust outlet pipe 142 and the exhaust outlet 902 is arranged in the free space and does not need to occupy additional space, so that the height of the main body 1000 can be controlled.

[0089] In some embodiments, as shown in FIGS. 8 and 9, the exhaust fan 7 includes a central exhaust connecting shaft sleeve 77 arranged along the axial direction of the exhaust fan 7. The exhaust connecting shaft sleeve 77 is sleeved on the output shaft 532, and one end of the exhaust connecting shaft sleeve 77 is arranged in the fresh air duct V01 and abuts against the fresh air fan 6.

[0090] Specifically, the side wall of the fresh air volute 8 facing the exhaust volute 9 is provided with a perforated portion 814, and one end of the exhaust connecting shaft sleeve 77 extends into the fresh air duct V01 through the perforated portion 814.

[0091] The arrangement of the exhaust connecting shaft sleeve 77 on the exhaust fan 7 increases the contact area with the output shaft 532, improves the driving ability of the output shaft 532 when rotating, and also uses the long exhaust connecting shaft sleeve 77 to realize positioning with the fresh air fan 6 and reduce the difficulty of positioning.

[0092] As shown in FIG. 9, the fresh air fan 6 includes a central fresh air connecting shaft sleeve 67 arranged along the axial direction of the fresh air fan 6. The fresh air connecting shaft sleeve 67 is sleeved on the output shaft 532. The arrangement of the fresh air connecting shaft sleeve 67 on the fresh air fan 6 increases the contact area with the output shaft 532, improves the driving ability of the output shaft 532 when rotating, and also uses the long fresh air connecting shaft sleeve 67 to realize axial positioning and reduce the difficulty of positioning.

[0093] Further, the bidirectional ventilation assembly further includes a locking nut threadedly connected to the output shaft 532 and abutting against the fresh air connecting shaft sleeve 67, so as to realize axial positioning of the fresh air fan 6 and the exhaust fan 7.

[0094] In some embodiments, as shown in FIGS. 8 and 9, the exhaust fan 7 forms an exhaust accommodating groove V07 at the center in the radial direction, and at least a portion of the stator portion 51 and at least a portion of the rotor portion 52 of the second motor 5 are accommodated in the exhaust accommodating groove V07. Specifically, the hub of the exhaust fan 7 forms the exhaust accommodating groove V07.

[0095] Moreover, the hub of the exhaust fan 7 is sleeved outside the main body of the second motor 5, which has a protective effect and can make the center of mass of the exhaust fan 7 as close to the center of the rotor portion 52 as possible, so that the bending moment generated by the exhaust fan 7 on the second motor 7 is small, the exhaust fan 7 shakes less when rotating, and the exhaust fan 7 operates stably and has low energy consumption.

[0096] In some embodiments, the outer diameter D1 of the fresh air fan 6 is greater than the outer diameter D2 of the exhaust fan 7, so as to ensure that the fresh air volume is greater than the exhaust air volume.

[0097] Correspondingly, the fresh air volute 8 includes a first volute surrounding plate 812 surrounding the radial outer side of the fresh air fan 6, and the exhaust air volute 9 includes a second volute surrounding plate 906 surrounding the radial outer side of the exhaust fan 7. The diameter of the first volute surrounding plate 812 is greater than the diameter of the second volute surrounding plate 906. In this way, the components can be compact and the overall space occupied can be reduced.

[0098] Moreover, the second volute surrounding plate 906 can leave more space on the radial outer side, so that there is space for air to flow in the main body 1 on the radial outer side of the exhaust air volute 9. In this way, when the exhaust air volute 9 sucks in air from the exhaust air inlet 901, more air can enter, which is beneficial to improve the exhaust air inlet volume.

[0099] Further, in the height direction of the main body 1000, the fresh air inlet 801 is located below the main body 1000, and in the length direction of the main body 1000, the fresh air outlet 802 is located between the exhaust air outlet 902 and the fresh air inlet 801. In this way, the positions of the fresh air outlet 802, the exhaust air outlet 902, and the fresh air inlet 801 are compact, which is beneficial to reduce the overall size.

[0100] In some embodiments, as shown in FIG. 1, the main body 1 is provided with a main body air outlet 105, and the main body air outlet 105 corresponds to the fresh air outlet 802. As shown in FIGS. 3 and 19, the wall-mounted air conditioner 10000 can include an expansion pipe 19 connected between the main body air outlet 105 and the fresh air outlet 802, and the flow area of the expansion pipe 19 gradually increases in the direction towards the main body air outlet 105. That is, the expansion pipe 19 makes the fresh air outlet air undergo an expansion process again, so as to further improve the fresh air pressure and further increase the air supply range.

[0101] Specifically, the exhaust air outlet 902 and the fresh air inlet 801 are located below the main body 1000 and close to the rear side, so that the connection pipe does not interfere with the expansion pipe 19 after being connected.

[0102] In some embodiments, as shown in FIG. 11, the total thickness of the exhaust air wheel disc 71 and the exhaust air blade 72 in the axial direction of the exhaust air fan 7 is h2, and as shown in FIG. 12, the total thickness of the fresh air wheel disc 61 and the fresh air blade 62 in the axial direction of the fresh air fan 6 is h1, where h2 < h1. In this way, while ensuring that the fresh air volume is greater than the exhaust air volume, the axial thickness of the main body part of the fresh air fan 7 is greater, so that the structural strength is greater and can bear greater torque. While the exhaust air fan 7 requires less air volume, the smaller axial thickness of the main body part can appropriately reduce the exhaust air volume and the axial size of the bidirectional air exchange assembly.

[0103] In some embodiments, as shown in FIG. 10, the total thickness of the stator part 51 and the rotor part 52 in the axial direction is h3, the exhaust air fan 7 includes the exhaust air wheel disc 71 and the exhaust air blade 72, the exhaust air blade 72 is located at the outer edge of the exhaust air wheel disc 71, and the exhaust air blade 72 extends along the axial direction of the exhaust air wheel disc 71, the total thickness of the exhaust air wheel disc 71 and the exhaust air blade 72 in the axial direction is h2. It is satisfied that h3 > h2. It can be understood that the second motor 5 needs to drive the fresh air fan 6 and the exhaust air fan 7 at the same time, although the exhaust air volume is designed to be smaller, but the fresh air volume is designed to be larger, therefore the total thickness of the stator part 51 and the rotor part 52 in the axial direction is set to be greater than the axial thickness of the main body part of the exhaust air fan 7, to ensure that the second motor 5 can support the rotation of the two fans, and to improve the sufficient support force of the second motor 5.

[0104] In some embodiments, as shown in FIG. 14, the exhaust air fan 7 can include an exhaust air protruding part 74 provided on the exhaust air wheel disc 71, and the exhaust air protruding part 74 extends in a direction towards the fresh air fan 6 relative to the exhaust air wheel disc 71, so that the side of the exhaust air protruding part 74 close to the second motor 5 forms an exhaust air accommodating groove V07 of the second motor 5, and at least a part of the stator part 51 and at least a part of the rotor part 52 are accommodated in the exhaust air accommodating groove V07. In this way, on the one hand, the exhaust air wheel disc 71 with the exhaust air blade 72 is located as much as possible in the axial direction of the main body part of the second motor 5, and in the case that the axial thickness dimension of the exhaust air wheel disc 71 and the exhaust air blade 72 is smaller, while the axial thickness dimension of the main body part of the second motor 5 is larger, the space is fully utilized to arrange the main body part of the second motor 5.

[0105] In some embodiments, the total thickness of the stator part 51 and the rotor part 52 in the axial direction is h3, the total thickness of the fresh air wheel disc 61 and the fresh air blade 62 in the axial direction of the fresh air fan 6 is h1, and h1 > h3. In this way, it is also ensured that the fresh air volume is larger, and the second motor 5 does not need to occupy too much air duct space.

[0106] In some embodiments, as shown in FIG. 11 and FIG. 14, the exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72 located at the outer edge of the exhaust wheel disc 71 and extending along the axial direction of the exhaust wheel disc 71 towards the direction away from the fresh air fan 6. This can simplify the structure of the exhaust fan 7 and make full use of the space on the windward side of the exhaust fan 7.

[0107] Referring to FIG. 5 and FIG. 15, the fresh air volute 8 includes a first volute 81 and a second volute 82. The first volute 81 is located on the side of the exhaust volute 9 facing the heat exchange fan 41 and is detachably connected with the exhaust volute 9. The second volute 82 is located on the side of the first volute 81 facing the heat exchange fan 41 and is detachably connected with the first volute 81, and the first volute 81 is located between the exhaust volute 9 and the second volute 82.

[0108] Referring to FIG. 14, the first volute 81 includes a first volute end plate 811 and a first volute surrounding plate 812 extending along the edge of the first volute end plate 811 towards the heat exchange fan 41.

[0109] The central part of the first volute end plate 811 forms a recess 813 towards the inside of the fresh air fan 6, and the center of the recess 813 is provided with a perforated part 814. At least a part of the exhaust protrusion 74 is located in the recess 813, and the output shaft 532 is connected with the fresh air fan 6 through the perforated part 814.

[0110] In some embodiments, the fresh air volute 8 is at least divided into the first volute 81 and the second volute 82 for processing respectively, which can reduce the manufacturing and assembly difficulty. Moreover, the complex shell is manufactured in parts, which is convenient for quality control. The first volute 81 is detachably connected with the exhaust volute 9, and the second volute 82 is detachably connected with the first volute 81, which is convenient for assembly and subsequent adjustment and maintenance.

[0111] The exhaust protrusion 74 is arranged at the center of the exhaust wheel disc 71, and the center of the first volute end plate 811 forms a recess 813. On the one hand, the exhaust protrusion 74 is formed by the hub of the exhaust fan 7 to accommodate the main body part of the second motor 5, and the exhaust protrusion 74 can improve the structural strength of the exhaust fan 7. On the other hand, the main body part of the second motor 5 is assembled in the exhaust protrusion 74, which occupies more of the exhaust air duct V02 and less of the fresh air duct V01, which matches the design that the fresh air volume is greater than the exhaust air volume. Only the output shaft 532 passes through the first volute end plate 811, which helps to seal and reduce the probability of mutual flow of fresh air and exhaust air and air flow disturbance.

[0112] Specifically, the fresh air fan 6 comprises a fresh air wheel disc 61 and fresh air blades 62, the fresh air blades 62 are located at the outer edge of the fresh air wheel disc 61, and the fresh air blades 62 extend along the axial direction of the fresh air wheel disc 61. Wherein, the fresh air fan 6 can comprise a fresh air protruding part 64 arranged on the fresh air wheel disc 61, and the fresh air protruding part 64 extends towards the direction of the heat exchange fan 41 relative to the fresh air wheel disc 61, so that the fresh air protruding part 64 forms a fresh air containing groove V08 close to one side of the second motor 5. At least part of the recessed part 813 is accommodated in the fresh air containing groove V08. In this way, the main body part of the second motor 5 can occupy part of the space of the fresh air air duct V01. In this way, under the condition that the model and size of the second motor 5 are certain, the arrangement of the exhaust fan 7 and the fresh air fan 6 can be more compact, the exhaust fan 7 and the fresh air fan 6 and the second motor 5 as a whole occupy a smaller axial dimension space, and the bidirectional air exchange assembly as a whole forms a thinner profile, so that the length of the main body 1000 as a whole is not large.

[0113] In some embodiments, in order to make the wall-mounted air conditioner 10000 more secure and reliable, the size of the main body 1000 is strictly controlled. In this way, not only is the gap between internal parts small and not easy to loosen, but also each air duct can be designed to be shorter, the size of the casing 1 is reduced, thereby reducing the overall weight of the main body 1000, making it safer to hang on the wall, and visually appearing thinner.

[0114] When controlling the size of the main body 1000, how to reduce the size of the bidirectional air exchange assembly is the key. The first thing that needs to be ensured in the bidirectional air exchange assembly is that the second motor 5 can output enough power to meet the demand for exhaust air volume and fresh air volume, so the thickness of the second motor 5, especially the total thickness h3 of the stator part 51, the rotor part 52 and the second motor 5 in the axial direction needs to be large enough, and the total thickness h3 of the stator part 51, the rotor part 52 and the second motor 5 in the axial direction is greater than the axial thickness h2 of the main body part of the exhaust fan 7.

[0115] After the second motor 5 occupies a certain thickness dimension, in order to avoid the structural size of the bidirectional ventilation assembly from being excessively expanded, the exhaust fan 7 is optimized, a central exhaust protruding portion 74 is arranged on the exhaust wheel disc 71, the exhaust protruding portion 74 extends towards the fresh air fan 6 relative to the exhaust wheel disc 71, so that the exhaust protruding portion 74 forms an exhaust containing groove V07 of the second motor 5 on the side close to the second motor 5, at least a part of the stator portion 51 and at least a part of the rotor portion 52 are contained in the exhaust containing groove V07, and a central part region of the first volute end plate 811 of the first volute 81 is formed as a recess 813 towards the fresh air fan 6, so that at least a part of the exhaust protruding portion 74 is located in the recess 813. A central part region of the fresh air wheel disc 61 is formed as a fresh air protruding portion 64 protruding towards the heat exchange fan 41, the fresh air protruding portion 64 forms a fresh air containing groove V08 on the side close to the second motor 5, and at least a part of the recess 813 is contained in the fresh air containing groove V08.

[0116] In this way, the distance between the main body portion of the second motor 5 and the fresh air fan 6 is also reduced, so that the axial distance between the fresh air fan 6 and the main body portion of the second motor 5 is reduced, the bending moment generated by the fresh air fan 6 on the output shaft 532 is reduced, the coaxiality of the fresh air fan 6 and the exhaust fan 7 is higher when the second motor 5 moves, and the fresh air fan 6 and the exhaust fan 7 are less likely to shake, so that wear and vibration caused by friction between the volute and the fresh air fan 6 and the exhaust fan 7 can be avoided.

[0117] In some embodiments, referring to FIG. 8, the exhaust volute 9 and the fresh air volute 8 are connected, share the first volute end plate 811 therebetween, and are spaced apart by the first volute end plate 811 between the fresh air air duct V01 and the exhaust air duct V02. In this way, a spacing gap is not required between the exhaust volute 9 and the fresh air volute 8, the axial size of the bidirectional ventilation assembly is further reduced, the occupied space in the wall-mounted air conditioner 10000 is reduced, and the overall flat design of the wall-mounted air conditioner 10000 is facilitated.

[0118] In some embodiments, the first volute end plate 811 is a single-layer plate, so that the structure is simple and the overall axial size is reduced.

[0119] In some embodiments, referring to FIGS. 8, 11 and 14, the exhaust fan 7 includes an exhaust wheel disc 71 coaxially arranged with the second motor 5 and connected with the output shaft 532 of the second motor 5, and exhaust blades 72. The exhaust blades 72 are arranged on the exhaust wheel disc 71 and extend only in a direction away from the fresh air fan 6, and are arranged in a circumferential direction on the exhaust wheel disc 71. That is, the exhaust fan 7 includes single-layer centrifugal blades, so that the exhaust fan 7 is simple in structure and low in cost while meeting a small air volume. Moreover, the blade cylinder formed by the exhaust blades 72 arranged in the circumferential direction is open at the axial air inlet end, facilitating air suction, reducing air suction resistance, and ensuring the air inlet volume of the exhaust.

[0120] In some embodiments, referring to FIGS. 8, 12 and 14, the fresh air wheel disc 61 is coaxially arranged with the second motor 5 and connected with the output shaft 532 of the second motor 5. The fresh air blades 62 include first fresh air blades 621 extending from the fresh air wheel disc 61 in a direction away from the exhaust fan 7. The blade cylinder formed by the first fresh air blades 621 arranged in the circumferential direction is open at the axial air inlet end, facilitating air suction, reducing air suction resistance, and ensuring the air inlet volume of the fresh air.

[0121] Specifically, referring to FIGS. 8, 12 and 14, the fresh air blades 62 can include second fresh air blades 622 extending from the fresh air wheel disc 61 in a direction close to the exhaust fan 7. In this way, the fresh air fan 6 includes double-layer centrifugal blades, so that the double-layer centrifugal blades are helpful to increase the overall structural strength of the centrifugal fan while meeting the requirement of a large air volume.

[0122] Further, in the axial direction of the fresh air fan 6, the length h12 of the second fresh air blades 622 is less than the length h11 of the first fresh air blades 621. Here, the first fresh air blades 621 are directed toward the axial air inlet end, so that the axial length of the first fresh air blades 621 is greater, which is helpful to obtain a greater fresh air inlet volume by using the first fresh air blades 621. The shorter second fresh air blades 622 are used to supplement the fresh air inlet. Moreover, the first fresh air blades 621 on the windward side are longer, which is helpful to reduce noise while ensuring the fresh air volume.

[0123] More specifically, the fresh air blade 62 comprises a first fresh air blade 621 and a second fresh air blade 622, the first fresh air blade 621 extends from the fresh air wheel disc 61 towards a direction away from the exhaust fan 7, and the second fresh air blade 622 extends from the fresh air wheel disc 61 towards a direction close to the exhaust fan 7. In the radial direction of the fresh air fan 6, a plurality of second fresh air blades 622 are arranged outside the recess 813. In this way, the second fresh air blade 622 and the recess 813 at least partially overlap in the axial direction, so that the space outside the recess 813 in the radial direction can be utilized, further improving the compactness of the parts arrangement and reducing the axial size of the bidirectional ventilation assembly.

[0124] In some embodiments, referring to FIG. 17, in the axial direction of the fresh air fan 6, the length h12 of the second fresh air blade 622 is less than the length L2 of the recess 813. Here, the length L2 of the recess 813 refers to the length of the vertical projection of the recess 813 on the axis of the fresh air fan 6. In this way, the axial length of the second fresh air blade 622 is limited, so that the second fresh air blade 622 avoids occupying too much axial space when arranged, improving space utilization.

[0125] Further, as shown in FIGS. 12 and 13, the fresh air wheel disc 61 is formed with a wheel disc hole 612 for the second fresh air blade 622 to draw in air through the wheel disc hole 612, and the distance from the wheel disc hole 612 to the center of the fresh air wheel disc 61 is less than the distance from the fresh air blade 62 to the center of the fresh air wheel disc 61. That is, the wheel disc hole 612 is closer to the center of the fresh air wheel disc 61 than the fresh air blade 62. This facilitates the second fresh air blade 622 to guide the airflow to be drawn in along the axial direction into the space where the second fresh air blade 622 is located when drawing air from the wheel disc hole 612, reducing the turbulence generated by the first fresh air blade 621.

[0126] In some embodiments, referring to FIGS. 5, 8 and 15, the second volute 82 comprises a second volute half 821 and a fan cover 822. The second volute half 821 is located on the side of the first volute 81 facing the heat exchange fan 41, and the second volute half 821 is detachably connected with the first volute 81. The second volute half 821 is provided with an axial air passage 8211 at the center in the radial direction, and a volute cavity V011 is formed between the second volute half 821 and the first volute 81. The fresh air fan 6 is located in the volute cavity V011, and the axial air inlet end of the fresh air fan 6 is arranged towards the axial air passage 8211. The second volute half 821 and the first volute 81 enclose the fresh air outlet 802.

[0127] The fan cover 822 is located on the side of the second volute half 821 facing the heat exchange fan 41, and the fan cover 822 is detachably connected with the second volute half 821. Referring to FIG. 8, the cavity enclosed by the fan cover 822 and the second volute half 821 is the fresh air cavity V012, and the fan cover 822 and the second volute half 821 enclose the fresh air inlet 801.

[0128] After being arranged in this way, the fresh air cavity V012 is formed at the air inlet end of the fresh air fan 6. The fresh air cavity V012 formed in this way can cover the axial air inlet end of the fresh air fan 6, and can accommodate air in the fresh air cavity V012, so that the air can enter the fresh air fan 6 from the fresh air cavity V012 in the axial direction, thereby improving the air suction efficiency of the fresh air fan 6 and reducing the air suction loss.

[0129] The fan cover 822 is located on the side of the second volute half 821 facing the indoor heat exchanger 2, so that the volute cavity V011 is spaced apart from the indoor heat exchanger 2. When the indoor heat exchanger 2 is in refrigeration, the indoor heat exchanger 2 can absorb the heat in the fresh air cavity V012, so that the temperature of the fresh air gradually decreases. Due to the spacing of the fan cover 822, the indoor heat exchanger 2 is far away from the volute cavity V011, and the cooling capacity of the cold energy generated by the indoor heat exchanger 2 on the air in the volute cavity V011 decreases, so that the air in the volute cavity V011 is not easily supercooled to produce condensate water.

[0130] In this way, even if the inhaled fresh air is cooled, it will not be supercooled to produce condensate water. Moreover, even if condensate water is produced in the air in the fresh air cavity V012, the condensate water is easy to stay in the fresh air cavity V012 and is not easy to enter the volute cavity V011 to be blown into the room, thereby avoiding the situation that the fresh air module blows water. When the indoor heat exchanger 2 is in heating, the indoor heat exchanger 2 can absorb the cold energy in the fresh air cavity V012, so that the temperature of the fresh air gradually increases. Then, the heated air enters the volute cavity V011 and is fully mixed, so that the hot air blown out from the fresh air module is relatively mild.

[0131] In some embodiments, referring to FIG. 8, the fresh air duct V01 includes: a volute cavity V011 and a fresh air cavity V012, the fresh air fan 6 is located in the volute cavity V011, and the fresh air cavity V012 is located on the side of the volute cavity V011 facing the heat exchange fan 41. In this way, the fresh air cavity V012 is separated, and air treatment parts can be arranged in the fresh air cavity V012 to increase the fresh air treatment capacity.

[0132] Specifically, the fresh air volute 8 includes: a fresh air grille 808 separating the volute cavity V011 and the fresh air cavity V012, so that the fresh air fan 6 can be protected to avoid damage caused by impurities being sucked into the fresh air fan 6.

[0133] In some embodiments, referring to FIG. 3, the wall-mounted air conditioner 10000 can comprise a purifying member 11, referring to FIG. 8, the purifying member 11 is arranged in the fresh air duct V01, so that the fresh air blown into the room is purified, and the cleanliness of the indoor air is improved. Specifically, the purifying member 11 is installed in the fresh air cavity V012, that is, the purifying member 11 is located at the axial air inlet end of the fresh air fan 6. The rotation of the fresh air fan 6 can make the outdoor air enter the fresh air volute 8 from the fresh air inlet 801, and the outdoor air entering the fresh air volute 8 can be blown through the purifying member 11, and then enter the room from the fresh air outlet 802.

[0134] In this way, the fresh air flow can almost vertically blow through the purifying member 11, and the fresh air inlet consumption can be further reduced, thereby increasing the fresh air volume. Moreover, when the indoor heat exchanger 2 is in a refrigeration state, condensate water is generated in the fresh air, and when the air flows through the purifying member 11, the condensate water can be left on the purifying member 11, thereby further avoiding the blowing of water when the fresh air module blows out.

[0135] Further, the purifying member 11 is connected with the second volute 82, so that the assembly of the purifying member 11 is facilitated, and the purifying member 11 does not interfere with the fresh air fan 6.

[0136] In some embodiments, as shown in FIG. 15, the purifying member 11 comprises a filter screen 111, and the filter screen 111 covers the axial air inlet 8211. The filter screen 111 covers the entire air inlet end of the fresh air fan 6, the filter screen 111 has a large coverage area, a large filtering area, and a good filtering effect. The arrangement of the filter screen 111 helps to ensure sufficient contact area with the airflow, and the filter screen 111 has light weight and low air flow noise. In some embodiments, the filter screen 111 is a hepa screen, so it has strong adsorption force and strong filtering effect on dust in the air.

[0137] In some embodiments, the filter screen 111 is plate-shaped, so that the filter screen 111 is relatively thin as a whole, and does not occupy too thick size when placed in the bidirectional air exchange assembly. In some embodiments, the filter screen 111 is square-shaped, so that the positioning and installation of the filter screen 111 are facilitated.

[0138] Further, the filter screen 111 is a square screen, and the side length of the filter screen 111 is greater than the diameter of the axial air inlet 8211. The square screen is convenient to position when fixed, is not easy to shake after being fixed, and is easy to process, and the processing waste is small. By making the side length of the filter screen 111 greater than the diameter of the axial air inlet 8211, all the fresh air flow entering the axial air inlet 8211 can flow through the filter screen 111, and the filtering cleanliness is high.

[0139] Further, referring to FIG. 8, a part of the fresh air cavity V012 constitutes an empty cavity V0121, the empty cavity V0121 is located on the side of the purifying member 11 away from the fresh air fan 6, and the fresh air inlet 801 communicates with the empty cavity V0121.

[0140] That is, the purification member 11 is arranged at a position close to the fresh air fan 6 in the fresh air cavity V012, and the part of the fresh air cavity V012 away from the fresh air fan 6 is the cavity V0121, i.e. the space between the face of the fresh air fan 6 and the inner surface of the fan cover 822 is the cavity V0121. Thus, the cavity V0121 is in a negative pressure state when the fresh air fan 6 is running, so that the air flow can automatically flow into the cavity V0121 from the fresh air inlet 801, reducing the air flow resistance.

[0141] Thus, the air intake amount of the fresh air module is increased, and the air intake reliability and stability of the whole are improved.

[0142] In some embodiments, the fan cover 822 forms a positioning protrusion 8221 on the side facing the indoor heat exchanger 2. The base 3 is provided with an end plate 31 adjacent to the fan cover 822, as shown in FIG. 18, and the end plate 31 is formed with a positioning notch 311. That is, as shown in FIG. 6, among the side of the fan cover 822 facing the indoor heat exchanger 2, the part where the positioning protrusion 8221 is located is the first positioning face F1, and the part where the positioning protrusion 8221 is not located is the second positioning face F2. After the positioning protrusion 8221 and the positioning notch 311 are matched, the end plate 31 is located between the first positioning face F1 and the second positioning face F2.

[0143] Thus, the positioning protrusion 8221 and the positioning notch 311 are matched to form the positioning of the bidirectional air exchange assembly, and the fresh air volute 8 and the indoor heat exchanger 2 are pulled closer. The structure of the positioning notch 311 is not limited, for example, in the example shown in FIG. 18, the positioning notch 311 is provided through the thickness direction of the end plate 31, and the positioning notch 311 is equivalent to a notch on the end plate 31. After the positioning protrusion 8221 and the positioning notch 311 are matched, the positioning protrusion 8221 fills the notch on the end plate 31. For another example, the positioning notch 311 is a groove on the side of the end plate 31 facing the fresh air volute 8, and the groove is not through. At this time, the positioning protrusion 8221 is equivalent to filling the groove.

[0144] After the fresh air volute 8 and the indoor heat exchanger 2 are pulled closer, the cold or heat of the indoor heat exchanger 2 can be absorbed by the fresh air in the fresh air volute 8, so that the blown fresh air is closer to room temperature and is more moderate.

[0145] After the fresh air volute 8 and the indoor heat exchanger 2 are pulled closer, even in some schemes, at least part of the positioning protrusion 8221 can at least partially overlap the indoor heat exchanger 2 in the transverse direction. Thus, the overall transverse dimension can be reduced, so that the wall-mounted air conditioner 10000 will not be too long.

[0146] Specifically, at least part of the cavity V0121 is located in the positioning protrusion 8221, so that the positioning protrusion 8221 can be thinned, the weight can be reduced, and the space utilization rate inside the positioning protrusion 8221 can be improved.

[0147] In some embodiments, the fresh air volute 8 is further provided with a mounting port 803, and the purifying member 11 is detachably assembled in the mounting port 803. In this way, when the purifying member 11 is damaged or saturated, the purifying member 11 can be easily disassembled for maintenance or replacement.

[0148] Specifically, as shown in FIG. 15, the mounting port 803 is surrounded by the fan cover 822 and the second volute half 821, and the purifying member 11 is detachably assembled in the fresh air cavity V012 through the mounting port 803. In this way, the mounting port 803 can be designed to be relatively large in size to facilitate the installation of a purifying member 11 of a larger size. When the mounting port 803 is relatively large in size, the mounting port 803 is formed by the fan cover 822 and the second volute half 821, and the fan cover 822 and the second volute half 821 are respectively formed with open half-ports, which facilitates processing or demolding and reduces the waste rate of molding.

[0149] Specifically, as shown in FIG. 3, in the front-rear direction of the main body, the mounting port 803 is located on the front side of the main body 1000, and the purifying member 11 can be free from interference from the pipes connected at the fresh air inlet 801 and the exhaust air outlet 902 when disassembled, which facilitates operation during disassembly. In some embodiments, the front side of the casing 1 is provided with an openable panel (not shown in the figure), and when the panel is opened or turned upward, the mounting port 803 is exposed, which facilitates the disassembly of the purifying member 11.

[0150] It is also not excluded that in some schemes, the mounting port 803 is arranged at the bottom of the main body 1000.

[0151] In some embodiments, as shown in FIG. 6, the fresh air volute 8 is formed with a purifying air inlet 804 for communicating with the indoor space, and the fresh air fan 6 can rotate to allow indoor air to enter the fresh air volute 8 from the purifying air inlet 804 to be purified by the purifying member 11, and to allow the indoor air entering the fresh air volute 8 to enter the indoor space from the fresh air outlet 802. In this way, the indoor air can enter the fresh air duct V01 from the purifying air inlet 804, be purified, and then enter the indoor space from the fresh air outlet 802.

[0152] In this way, when the indoor air is polluted, the indoor air can be circulated and purified. In this way, the indoor air can be purified without introducing outdoor fresh air, thereby improving the cleanliness. Since no outdoor fresh air is introduced, the indoor air is not suddenly blown with cold or hot air that has not been heat exchanged, thereby avoiding the discomfort caused by a sudden change in indoor temperature.

[0153] Specifically, the accommodation cavity V1 in the casing 1 is formed with two first and second chambers V11 and V12 that are not in communication with each other through the internal structure, as shown in FIG. 2.

[0154] As shown in some specific embodiments of Fig. 4, an end plate 31 is arranged on the base 3 near the fresh air volute 8, and the fresh air volute 8 and the end plate 31 cooperate to form a wind isolation structure, so that air cannot pass through the two sides. The heat exchange fan 41 and the indoor heat exchanger 2 are located on one side of the wind isolation structure, and the exhaust air volute 9 with the exhaust air inlet 901 is located on the other side of the wind isolation structure. In this way, air containing condensate water can be prevented from entering the exhaust air inlet 901.

[0155] In particular, in some embodiments, the casing 1 is provided with a casing air inlet 103 corresponding to the exhaust air volute 9, and the exhaust air fan 7 rotates to allow indoor air to enter the accommodation cavity V1 from the casing air inlet 103, and then enter the exhaust air volute 9 from the exhaust air inlet 901. In this way, during exhaust air, even if the heat exchange fan 41 is in a stopped state, when the exhaust air fan 7 sucks air from the accommodation cavity V1, it is not easy to suck condensate water from the indoor heat exchanger 2.

[0156] Here, the first chamber V11 and the second chamber V12 can also be directly formed by the casing 1 in other embodiments, for example, the casing 1 is integrally formed with a partition plate to divide the accommodation cavity V1 into the first chamber V11 and the second chamber V12.

[0157] The casing 1 is provided with a casing air inlet 103 corresponding to the second chamber V12, and the purification air inlet 804 is located in the second chamber V12. That is, the purification air inlet 804 and the exhaust air inlet 901 are located on the same side of the wind isolation structure. The fresh air fan 6 rotates to allow indoor air to enter the second chamber V12 from the casing air inlet 103, and then enter the fresh air volute 8 from the purification air inlet 804 to be purified by the purification element 11, and to allow indoor air entering the fresh air volute 8 to enter the room from the fresh air outlet 802.

[0158] In this way, the purification air inlet 804 can be hidden in the second chamber V12, improving the appearance of the wall-mounted air conditioner 10000. Moreover, no physical connection pipe is needed between the purification air inlet 804 and the casing air inlet 103, reducing the number of parts, reducing the occupied volume, and facilitating layout. Specifically, as shown in Fig. 6, the purification air inlet 804 is located at the bottom of the fresh air volute 8 and is arranged downward.

[0159] It can be understood that the fresh air inlet 801 is located below the main body 1000, and the fresh air inlet 801 and the purification air inlet 804 are both located at the bottom of the fresh air volute 8 and extend downward, which is convenient for processing and forming. Moreover, in use, one of them is opened. At this time, the fresh air inlet 801 and the purification air inlet 804 are both located at the bottom of the fresh air volute 8, which facilitates the centralized arrangement of switches to select one of the air inlets to be opened, thereby reducing the number of switches.

[0160] Further, as shown in FIG. 6, the air inlet direction of the purification air inlet 804 is perpendicular to the length direction of the main body 1000. It can be understood that, by making the air inlet direction of the purification air inlet 804 perpendicular to the length direction of the main body 1000, the purification air inlet 804 is far away from the air outlet air inlet 901, so that the purification air inlet 804 and the air outlet air inlet 901 are not too close to each other to cause excessive air suction energy consumption. Moreover, the different directions of the purification air inlet 804 and the air outlet air inlet 901 help to expand the negative pressure area, help a large amount of indoor air to flow into the negative pressure area, and ensure the air outlet and the indoor fresh air volume.

[0161] In some optional embodiments, as shown in FIG. 6, the wall-mounted air conditioner 10000 can include a first switching valve 12 for switching the new air inlet 801 and the purification air inlet 804. In this way, the new air inlet 801 and the purification air inlet 804 can be selectively opened and closed. The specific structure of the first switching valve 12 is not limited here.

[0162] In some embodiments, as shown in FIG. 16, the air outlet volute 9 is formed with an indoor air outlet 903 for communicating with the indoor. The indoor air entering the air outlet volute 9 can be discharged to the indoor from the indoor air outlet 903 by rotating the air outlet fan 7. That is, the air outlet module can also be provided with an indoor air internal circulation arrangement, so as to promote the circulation of the indoor air without sending the indoor air to the outdoor.

[0163] In some embodiments, as shown in FIG. 16, the wall-mounted air conditioner 10000 can include a second switching valve 15 for switching the air outlet air inlet 902 and the indoor air outlet 903. In this way, the air outlet air inlet 902 and the indoor air outlet 903 can be selectively opened and closed. The specific structure of the second switching valve 15 is not limited here.

[0164] In some embodiments, as shown in FIGS. 5 and 8, the air outlet volute 9 includes a wind guide ring 91, and the area surrounded by the wind guide ring 91 forms the air outlet air inlet 901. The arrangement of the wind guide ring 91 can effectively collect the dispersed air flow and converge it into a more concentrated air flow to be sent into the air outlet fan 7, so as to make the air inlet more smooth and efficient and improve the air inlet volume of the air outlet fan 7.

[0165] Moreover, by reasonably designing the shape and angle of the wind guide ring 91, the air flow can enter the air outlet blades 72 of the air outlet fan 7 at the optimal angle, so as to improve the working efficiency of the air outlet fan 7. When there is unstable air flow fluctuation suction, the wind guide ring 91 can play a role in stabilizing the air flow, reducing the turbulence and fluctuation of the air flow, and enabling the air outlet fan 7 to operate more stably. The noise and vibration can be reduced, and the service life of the air outlet fan 7 can be prolonged.

[0166] Specifically, the wind guide ring 91 is in the shape of a circular tube, which is easy to process.

[0167] Specifically, the air guide ring 91 gradually decreases in diameter in the direction towards the heat exchange exhaust fan 7. As the air guide ring 91 gradually decreases in diameter, the passage of air through the air guide ring 91 narrows. According to the principle of fluid mechanics, at the same flow rate, the narrowing of the passage will accelerate the air flow, thereby increasing the air speed and the air volume. The air guide ring 91 gradually decreasing in diameter also helps to concentrate the upstream air volume, so that the air flow is directed to the center of the exhaust fan 7, and the air flow is more energy-efficient when driven radially by the exhaust blades 71. In addition, the concentrated air flow is also conducive to the stability of the air flow.

[0168] Specifically, as shown in FIG. 8, the exhaust fan 7 includes an exhaust disc 71 connected with the output shaft 532 of the second motor 5, and exhaust blades 72 connected to the side of the exhaust disc 71 away from the heat exchange fan 41, the exhaust blades 72 being a plurality of circumferentially arranged blades.

[0169] As shown in FIGS. 8 and 9, the edge of the exhaust blades 72 away from the exhaust disc 71 is a blade side edge 721, at least part of the blade side edge 721 is a gradual change section 7212, the gradual change section 7212 gradually decreases in distance from the exhaust disc 71 in the direction radially inward of the exhaust fan 7, and all the exhaust blades 72 form a side edge recess 723 at the gradual change section 7212. The end of the air guide ring 91 is located in the side edge recess 723.

[0170] That is, the exhaust blades 72 of the exhaust fan 7 are concave blades, the air guide ring 91 and the concave blades are both concave towards the fresh air fan 6, and the air guide ring 91 partially enters the side edge recess 723 formed by the concave blades. In this way, the air guide ring 91 and the exhaust fan 7 partially overlap in the axial direction, and the axial size of the exhaust volute 9 does not need to be increased under the premise of arranging the air guide ring 91.

[0171] In addition, after the exhaust fan 7 rotates, the surface swept by the exhaust blades 72 at the gradual change section 7212 forms a funnel surface gradually decreasing in diameter, which is conducive to the concentration of air flow to the center and reduces the energy loss caused by air flow disturbance.

[0172] In some embodiments, as shown in FIG. 17, the blade side edge 721 can include a straight section 7211, the extension direction of the straight section 7211 being perpendicular to the axis of the exhaust fan 7, and the straight section 7211 being connected to one end of the gradual change section 7212 away from the axis of the exhaust fan 7.

[0173] That is, if there is no straight section 7211, all the exhaust blades 72 are gradual sections 7212, which will result in the blade size of the exhaust fan 7 being reduced in the radial direction of the exhaust fan 7, thereby reducing the swept area of the blades, that is, affecting the air volume of the exhaust fan 7. Therefore, the structure of combining the straight section 7211 and the gradual section 7212 on the exhaust blade 72 can not only ensure the air volume, but also ensure the space utilization of the exhaust fan 7 in the axial direction. The exhaust blade 72 has a large axial size near the outer edge, which can fully utilize the space in the exhaust air duct V02 to drive the airflow, and is beneficial to the airflow to obtain greater kinetic energy.

[0174] Specifically, the gradual section 7212 and the straight section 7211 are connected by a circular arc transition, and the gradual section 7212 and the surface of the exhaust wheel 71 are connected by a circular arc transition. In this way, the stress concentration and the risk of fracture are reduced at the connection between the gradual section 7212 and the straight section 7211 and the connection between the gradual section 7212 and the surface of the exhaust wheel 71. Moreover, the gradual section 7212 and the surface of the exhaust wheel 71 are connected by a circular arc transition, which can be directly opposite the end of the air guide ring 91 to reduce the risk of scratching.

[0175] In some embodiments, the revolution surfaces of the blade side edges 721 of all the exhaust blades 72 coincide. The revolution surface is the surface swept by the blade side edge 721 around the axis of the exhaust fan 7. In this way, when the airflow flows axially to the center of the exhaust fan 7, it will not produce too much radial disturbance due to the inconsistent shape of the individual exhaust blades 72, thereby improving the stability of the airflow.

[0176] Specifically, as shown in FIG. 17, the axial distance between the air guide ring 91 and the gradual section 7212 gradually increases in the direction away from the axis of the exhaust fan 7. It can be understood that when the second motor 5 rotates to drive the exhaust fan 7 to rotate, the exhaust fan 7 will inevitably produce a small amplitude of shaking due to wear. The farther the exhaust fan 7 is from the axis of the exhaust fan 7, the greater the amplitude of shaking. Therefore, gradually increasing the axial distance between the air guide ring 91 and the gradual section 7212 in the direction away from the axis of the exhaust fan 7 is beneficial to reducing the risk of friction between the exhaust fan 7 and the air guide ring 91 when the exhaust fan 7 shakes.

[0177] In some embodiments, as shown in FIG. 17, the wall-mounted air conditioner 10000 can include a fixed support 17 located at the exhaust air inlet 901, and the fixed support 17 is connected with the exhaust volute 9, and the second motor 5 is installed on the fixed support 17. In this way, the fixed position of the second motor 5 has a small axial distance from the fresh air fan 6 and the exhaust fan 7, and the bending moment borne by the second motor 5 is small when it operates, which is beneficial to improving the rotation stability of the fresh air fan 6 and the exhaust fan 7.

[0178] Specifically, as shown in FIG. 17, the fixed bracket 17 includes a bracket end plate 171, a bracket connecting plate 172 and a bracket support ring 175, the bracket end plate 171 is connected with the exhaust volute 9, the bracket support ring 175 is connected to the side of the stator portion 51 facing the fresh air fan 6, the bracket connecting plate 172 is connected between the bracket end plate 171 and the bracket support ring 175, and the bracket connecting plate 172 is detachably connected with at least one of the bracket end plate 171 and the bracket support ring 175.

[0179] The bracket end plate 171, the bracket connecting plate 172 and the bracket support ring 175 define an installation cavity 174, and the main body portion of the second motor 5 is accommodated in the installation cavity 174. That is, the fixed bracket 17 provides the installation cavity 174 with a simple structure, not only increases the support area of the second motor 5, that is, the bracket end plate 171, the bracket connecting plate 172 and the bracket support ring 175 can all support the second motor 5, and improves the installation firmness of the second motor 5, but also the installation cavity 174 can also protect the electronic connector at the end of the second motor 5. In addition, the bracket connecting plate 172 is detachably connected with at least one of the bracket end plate 171 and the bracket support ring 175, which facilitates disassembly and assembly.

[0180] Specifically, as shown in FIG. 17, the bracket end plate 171 is provided with a wire hole 173. The wire hole 173 is fitted to the wire harness connected to the second motor 5, and the connection between the wire harness and the second motor 5 is located in the installation cavity 174. In this way, when the wire harness connected to the second motor 5 is introduced from the outside, the wire harness can be directly introduced from the side of the fixed bracket 17 away from the exhaust fan 7, which is advantageous for reducing the length of the wire harness compared with the scheme of introducing the wire from the other side of the fixed bracket 17, avoiding the wire harness being easily stuck in the exhaust fan 7 due to being too long, and the connection between the wire harness and the second motor 5 is hidden in the installation cavity 174, which not only looks good, but also improves the safety and reliability of the connection, avoiding the connection being touched by external objects to cause poor contact.

[0181] Further, referring to FIG. 5, the wall-mounted air conditioner 10000 can include an insulation sleeve 18, which is sleeved on the wire harness and connected at the wire hole 173. The provision of the insulation sleeve 18 buffers and protects the wire harness at the wire hole 173, avoiding the wire harness being abraded to cause a leakage when the wire hole 173 is impacted. Moreover, the insulation sleeve 18 can seal the wire hole 173 to some extent, reducing the entry of condensate water and moisture into the installation cavity 174, and reducing the risk of the electronic connector at the end of the second motor 5 being damp and damaged.

[0182] In some embodiments, a projection of the fixed bracket 17 in the axial direction of the exhaust fan 7 is located within a projection of the exhaust volute 9 in the axial direction of the exhaust fan 7.

[0183] In this way, the fixed support 17 does not protrude axially beyond the exhaust volute 9, and the fixed support 17 does not increase the axial dimension, which is conducive to reducing the overall axial dimension.

[0184] In some specific embodiments, as shown in FIG. 2, the wall-mounted air conditioner 10000 can include a fresh air inlet pipe 141 connected to the fresh air inlet 801, and an exhaust air outlet pipe 142 connected to the exhaust air outlet 902. The bottom wall of the casing 1 is provided with a pipe avoiding opening 104, and the fresh air inlet pipe 141 and the exhaust air outlet pipe 142 are arranged at the pipe avoiding opening 104 and extend out of the main body 1000 from below. The fresh air inlet pipe 141 and the exhaust air outlet pipe 142 are two independent pipe fittings, which can separate the fresh air flow path and the exhaust air flow path, and there is no cross flow between them, thereby reducing the risk of air leakage caused by cross flow.

[0185] The bottom wall of the main body 1000 is provided with a pipe avoiding opening 104, which facilitates the installation of the above-mentioned pipes.

[0186] The pipe avoiding opening 104 is arranged on the side wall of the casing 1, and then the fresh air inlet pipe 141 and the exhaust air outlet pipe 142 are arranged horizontally and then led out, so that at least one of the fresh air inlet pipe 141 and the exhaust air outlet pipe 142 is arranged together with the drain pipe and the refrigerant pipe. In this way, the plurality of pipes are wrapped by an external beam pipe or a belt to form one pipe in appearance, so that the wall-mounted air conditioner 10000 has fewer pipes after installation and has a simple appearance, which is convenient for assembly and avoids the risk of pipe collision.

[0187] In some embodiments, as shown in FIG. 1, the casing 1 is provided with a casing air outlet 105. The casing air outlet 105 is arranged corresponding to the fresh air outlet 802 of the fresh air volute 8, so that the fresh air discharged from the fresh air outlet 802 is discharged from the casing air outlet 105.

[0188] In some specific embodiments, the fresh air outlet 802 is located in front of the main body 1000, or the fresh air outlet 802 is located at the top of the main body 1000.

[0189] In some specific embodiments, the fresh air outlet 802 is located below the main body 1000 to guide the fresh air to flow forward and downward to the indoor. Correspondingly, the casing air outlet 105 can be arranged below the casing 1.

[0190] In some embodiments, as shown in FIGS. 1 and 3, the casing air outlet 105 of the casing 1 is provided with an air guide grille 16 to adjust the air outlet direction of the fresh air.

[0191] In some embodiments, as shown in FIG. 3, the exhaust air inlet 901 is formed on the exhaust air volute 9, and the axial direction of the exhaust air inlet 901 is along the length direction of the main body 1000. That is, the exhaust air inlet 901 is opposite to the axial air inlet end of the exhaust air fan 7, so that the air inlet resistance of the exhaust air fan 7 from the exhaust air inlet 901 is small, which is beneficial to ensure the exhaust air inlet amount. When the exhaust air inlet is easy, a smaller size exhaust air fan 7 can be selected, and the size of the bidirectional air exchange assembly is further reduced.

[0192] Specifically, the exhaust air inlet 901 is formed on the exhaust air volute 9 and away from the indoor heat exchanger 2, and the air inlet area of the exhaust air inlet 901 is just away from the indoor heat exchanger 2. When there is condensate water on the indoor heat exchanger 2 or the condensate water is attached to the surface of the parts near the indoor heat exchanger 2 in the accommodation cavity V1, the condensate water is not easy to be sucked into the exhaust air duct V02 by the exhaust air fan 7, which reduces the risk of water accumulation and bacteria breeding in the exhaust air duct V02, and reduces the risk of condensate water entering the second motor 5 and causing motor damage. When the fresh air fan 6 rotates to draw air from the outdoor, the condensate water on the indoor heat exchanger 2 will not be sucked into the fresh air duct V01, which reduces the risk of water accumulation and bacteria breeding in the fresh air duct V01.

[0193] In some embodiments, as shown in FIG. 1, the casing 1 is provided with a casing air inlet 103 at one end where the second motor 5 is located, and the casing air inlet 103 is located at the top of the main body 1000. The casing air inlet 103 and the exhaust air inlet 901 form a first communication air duct V04, and the exhaust air fan 7 rotates to drive the indoor air to enter the first communication air duct V04 from the casing air inlet 103, and then the indoor air enters the exhaust air volute 9 through the exhaust air inlet 901.

[0194] That is, the casing air inlet 103 and the exhaust air inlet 901 do not need to be connected by a solid pipe, and the air flow is only sucked from the top by air pressure. The casing air inlet 103 is located at the top of the casing 1, that is, in an area that cannot be seen by the user, so that the casing air inlet 103 is hidden, and the appearance can be improved.

[0195] In other embodiments, the casing 1 is provided with a casing air inlet 103 at one end where the second motor 5 is located, and the casing air inlet 103 is located on the side of the main body 1000. The exhaust air fan 7 rotates to drive the indoor air to enter the inside of the casing 1 from the casing air inlet 103, and then the indoor air enters the exhaust air volute 9 through the exhaust air inlet 901. That is, the casing air inlet 103 and the exhaust air inlet 901 do not need to be connected by a solid pipe, and the casing air inlet 103 is located on the side of the main body 1000 and can be opposite to the exhaust air inlet 901.

[0196] In this way, the air inlet path from the casing air inlet 103 to the exhaust air inlet 901 is shortened, and the air inlet path from the casing air inlet 103 to the exhaust air inlet 901 is arranged along the axial direction of the exhaust air fan 7, so that when the indoor air flows along the air inlet path to the exhaust air fan 7, the air flow does not need to change the flow direction multiple times. In this way, the air inlet resistance of the exhaust air can be further reduced to ensure the exhaust air inlet amount.

[0197] In some embodiments, the exhaust air fan 7 can be a plastic part, so as to be light in weight and low in cost. Of course, the scheme of the present application is not limited thereto, and the exhaust air fan 7 can also be a resin part, a metal part, etc. In some embodiments, the fresh air fan 6 can be a plastic part, so as to be light in weight and low in cost. Of course, the scheme of the present application is not limited thereto, and the fresh air fan 6 can also be a resin part, a metal part, etc.

[0198] Similarly, the exhaust air volute 9 can be a plastic part, so as to be light in weight and low in cost. In some embodiments, the exhaust air volute 9 is an injection molded part. In some embodiments, the fresh air volute 8 can be a plastic part. In some embodiments, the fresh air volute 8 is an injection molded part. Of course, the scheme of the present application is not limited thereto, and the fresh air volute 8 and the exhaust air volute 9 can also be metal parts, etc.

[0199] In some embodiments, according to the structural and functional requirements designed according to the present application, the outer diameter D1 of the fresh air fan 6 is greater than the outer diameter D2 of the exhaust air fan 7, which is beneficial to making the area swept by the fan blades of the fresh air fan 6 when rotating greater than the area swept by the fan blades of the exhaust air fan 7, so that the fresh air volume is greater than the exhaust air volume, which meets the design requirements of the wall-mounted air conditioner 10000. That is, the air is sucked from the unlimited outdoor space and sent to the indoor space, which consumes less energy than sucking the air from the relatively closed indoor space and discharging it to the outdoor space. Moreover, the air in the outdoor environment is fresh, and sucking the air from the outdoor environment and blowing it into the indoor environment is more conducive to supplementing fresh air in the indoor space and reducing the oxygen content and increasing the carbon dioxide content in the indoor air.

[0200] Moreover, by setting the outer diameter D2 of the exhaust air fan 7 to be less than the outer diameter D1 of the fresh air fan 6, the exhaust air outlet 902 of the exhaust air duct V02 and the fresh air outlet 802 of the fresh air duct V01 can be easily arranged in a staggered manner on the outer periphery of the bidirectional air exchange assembly, so as to facilitate the connection of the exhaust air outlet 902 to the exhaust air leading pipe 142 and the connection of the fresh air outlet 802 to the fresh air leading pipe 141, and to facilitate the non-intersection of the flow paths of the fresh air and the exhaust air in the bidirectional air exchange assembly.

[0201] In the description of the specification, the description with reference to the terms "embodiment", "example", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of some embodiments of the present application. In the specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. Although embodiments of some embodiments of the present application have been shown and described, it will be understood by those having ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of some embodiments of the present application, the scope of which is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner (10000) comprising: a main body (1000) comprising: a casing (1) having an accommodation cavity (V1) formed inside, and a heat exchange air inlet (101) and a heat exchange air outlet (102) formed on the casing (1) ; a base (3) disposed in the accommodation cavity (V1) and having a volute tongue air duct (V03) formed thereon; a heat exchange fan (41) disposed in the volute tongue air duct (V03) to suck indoor air into the volute tongue air duct (V03) through the heat exchange air inlet (101) when rotating, and blow air in the volute tongue air duct (V03) to the indoor through the heat exchange air outlet (102) ; a first motor (42) disposed in the accommodation cavity (V1) and located at one end of the heat exchange fan (41) in the length direction, for driving the heat exchange fan (41) to rotate; further comprising: a second motor (5) disposed in the accommodation cavity (V1) and located at the other end of the heat exchange fan (41) in the length direction, the second motor (5) comprising: a rotor portion (52) ; a stator portion (51) disposed around the outside of the rotor portion (52) in the radial direction of the rotor portion (52) ; an output shaft (532) fixedly connected with the rotor portion (52) ; a fresh air fan (6) which is an axial-inlet and radial-outlet centrifugal fan, the fresh air fan (6) being located on the side of the heat exchange fan (41) away from the first motor (42), and the fresh air fan (6) being fixedly connected with the output shaft (532) of the second motor (5) ; wherein the fresh air fan (6) is located between the second motor (5) and the heat exchange fan (41) ; an exhaust fan (7) which is an axial-inlet and radial-outlet centrifugal fan, the exhaust fan (7) being located on the side of the fresh air fan (6) facing the second motor (5) in the length direction of the main body (1000), and the exhaust fan (7) being fixedly connected with the output shaft (532) of the second motor (5) ; wherein the fresh air fan (6) is located between the exhaust fan (7) and the heat exchange fan (41), and the second motor (5) drives the fresh air fan (6) and the exhaust fan (7) to rotate synchronously in the working state; a fresh air volute (8) having a fresh air duct (V01) formed therein, the fresh air fan (6) being installed in the fresh air volute (8), and the fresh air volute (8) having a fresh air inlet (801) and a fresh air outlet (802) formed thereon; an exhaust volute (9) located on the side of the fresh air volute (8) facing the second motor (5), the exhaust volute (9) having an exhaust air duct (V02) formed therein, the exhaust fan (7) being installed in the exhaust volute (9), and the exhaust volute (9) having an exhaust air inlet (901) and an exhaust air outlet (902) formed thereon. 2.The wall-mounted air conditioner (10000) according to claim 1, the exhaust fan (7) comprises: an exhaust connecting shaft sleeve (77) located at the center of the exhaust fan (7), the exhaust connecting shaft sleeve (77) is arranged along the axial direction of the exhaust fan (7), and the exhaust connecting shaft sleeve (77) is connected to the output shaft (532). 3.The wall-mounted air conditioner (10000) according to claim 2, one end of the exhaust connecting shaft sleeve (77) is located in the fresh air duct (V01) and abuts against the fresh air fan (6). 4.The wall-mounted air conditioner (10000) according to claim 1, the exhaust fan (7) forms an exhaust accommodating groove (V07) at the center in the radial direction, and at least part of the stator portion (51) and at least part of the rotor portion (52) of the second motor (5) are accommodated in the exhaust accommodating groove (V07). 5.The wall-mounted air conditioner (10000) according to claim 1, the exhaust fan (7) comprises: an exhaust wheel disc (71); an exhaust blade (72) located at the outer edge of the exhaust wheel disc (71) and extending along the axial direction of the exhaust wheel disc (71); an exhaust protrusion (74) provided on the exhaust wheel disc (71) and extending towards the fresh air fan (6) relative to the exhaust wheel disc (71) so that the exhaust protrusion (74) forms an exhaust accommodating groove (V07) on the side close to the second motor (5). At least part of the stator portion (51) and at least part of the rotor portion (52) are accommodated in the exhaust accommodating groove (V07). 6.The wall-mounted air conditioner (10000) according to claim 5, the fresh air volute (8) comprises: a first volute (81) located on the side of the exhaust volute (9) facing the heat exchange fan (41) and detachably connected to the exhaust volute (9); a second volute (82) located on the side of the first volute (81) facing the heat exchange fan (41) and detachably connected to the first volute (81), wherein the first volute (81) is located between the exhaust volute (9) and the second volute (82). 7.The wall-mounted air conditioner (10000) according to claim 6, the first volute (81) comprises: a first volute end plate (811) of which the central part region forms a recess (813) facing the fresh air fan (6); a first volute surrounding plate (812) extending along the edge of the first volute end plate (811) in the direction of the heat exchange fan (41). At least a part of the exhaust protrusion (74) is located in the recess (813).

8. The wall-mounted air conditioner (10000) according to claim 7, The fresh air fan (6) comprises: a fresh air wheel disc (61); a fresh air blade (62) located at an outer edge of the fresh air wheel disc (61) and extending along an axial direction of the fresh air wheel disc (61); The fresh air fan (6) can comprise a fresh air protrusion (64) arranged on the fresh air wheel disc (61) and extending towards the heat exchange fan (41) relative to the fresh air wheel disc (61) so that the fresh air protrusion (64) forms a fresh air accommodating groove (V08) on one side close to the second motor (5). At least a part of the recess (813) is accommodated in the fresh air accommodating groove (V08).

9. The wall-mounted air conditioner (10000) according to claim 8, The fresh air blade (62) can comprise: a first fresh air blade (621) arranged to extend from the fresh air wheel disc (61) towards a direction away from the exhaust fan (7).

10. The wall-mounted air conditioner (10000) according to claim 8, The fresh air blade (62) can comprise: a second fresh air blade (622) arranged to extend from the fresh air wheel disc (61) towards a direction close to the exhaust fan (7); In a radial direction of the fresh air fan (6), a plurality of the second fresh air blades (622) are arranged outside the recess (813).

11. The wall-mounted air conditioner (10000) according to claim 10, in an axial direction of the fresh air fan (6), a length (h12) of the second fresh air blade (622) is less than a length (L2) of the recess (813).

12. The wall-mounted air conditioner (10000) according to claim 10, a wheel disc hole (612) is formed on the fresh air wheel disc (61), a distance from the wheel disc hole (612) to a center of the fresh air wheel disc (61) is less than a distance from the fresh air blade (62) to the center of the fresh air wheel disc (61).

13. The wall-mounted air conditioner (10000) according to claim 1, The fresh air fan (6) comprises: a fresh air wheel disc (61); a fresh air blade (62) located at an outer edge of the fresh air wheel disc (61) and extending along an axial direction of the fresh air wheel disc (61), a total thickness of the fresh air wheel disc (61) and the fresh air blade (62) in the axial direction is h1; The exhaust fan (7) comprises: an exhaust wheel disc (71); An exhaust vane (72) is located at the outer edge of the exhaust wheel disc (71) and extends along the axial direction of the exhaust wheel disc (71), and the total thickness of the exhaust wheel disc (71) and the exhaust vane (72) in the axial direction is h2; Wherein, h2 < h1.

14. The wall-mounted air conditioner (10000) according to claim 1, The total thickness of the stator portion (51) and the rotor portion (52) in the axial direction is h3; The exhaust fan (7) comprises: An exhaust wheel disc (71); An exhaust vane (72) is located at the outer edge of the exhaust wheel disc (71) and extends along the axial direction of the exhaust wheel disc (71); The total thickness of the exhaust wheel disc (71) and the exhaust vane (72) in the axial direction is h2; Wherein, h3 > h2.

15. The wall-mounted air conditioner (10000) according to claim 1, The exhaust fan (7) comprises: An exhaust wheel disc (71) is coaxially arranged with the second motor (5) and connected with the output shaft (532); A plurality of exhaust vanes (72) are arranged on the exhaust wheel disc (71) and extend only in the direction away from the fresh air fan (6), and the plurality of exhaust vanes (72) are arranged in the circumferential direction on the exhaust wheel disc (71).

16. The wall-mounted air conditioner (10000) according to claim 15, The exhaust volute (9) can comprise: An air guide ring (91) forms an exhaust air inlet (901) in the area surrounded by the air guide ring (91); Wherein, the edge of the exhaust vane (72) away from the exhaust wheel disc (71) is a vane side edge (721), at least part of the vane side edge (721) is a gradual change section (7212), and the distance between the gradual change section (7212) and the exhaust wheel disc (71) gradually decreases in the direction radially inward of the exhaust fan (7).

17. The wall-mounted air conditioner (10000) according to claim 16, all the exhaust vanes (72) form a side edge recess (723) at the gradual change section (7212), and the end of the air guide ring (91) is located in the side edge recess (723).

18. The wall-mounted air conditioner (10000) according to any one of claims 1-17, The fresh air duct (V01) comprises: A volute cavity (V011) in which the fresh air fan (6) is located; A fresh air cavity (V012) located on the side of the volute cavity (V011) facing the heat exchange fan (41); The fresh air volute (8) comprises: A fresh air grille (808) separating the volute cavity (V011) and the fresh air cavity (V012); The wall-mounted air conditioner (10000) can comprise: The purification piece (11) is installed in the fresh air cavity (V012), and the outdoor air can enter the fresh air volute (8) from the fresh air inlet (801) and blow through the purification piece (11) and then enter the indoor from the fresh air outlet (802) when the fresh air fan (6) rotates. 19.The wall-mounted air conditioner (10000) according to any one of claims 1-17, further comprising: The fixed support (17) is located at the exhaust air inlet (901) and connected with the exhaust air volute (9), and the second motor (5) is installed on the fixed support (17). The fixed support (17) comprises: The support end plate (171) is connected with the exhaust air volute (9); The support connecting plate (172); The support supporting ring (175) is connected to the side of the stator part (51) facing the fresh air fan (6); The support connecting plate (172) is connected between the support end plate (171) and the support supporting ring (175), and is detachably connected with at least one of the support end plate (171) and the support supporting ring (175).

Images