Wall-mounted air conditioner

Abstract

The utility model discloses a wall-mounted air conditioner which comprises a main body, the main body comprises a machine shell, an indoor heat exchanger, a base, a heat exchange fan and a first motor, the wall-mounted air conditioner further comprises a second motor, a fresh air fan, an exhaust fan, a fresh air volute and an exhaust volute, and the second motor comprises a stator part, a rotor part, a motor shell and an output shaft. The second motor drives the fresh air fan and the exhaust fan to rotate synchronously in the working state, the wall-mounted air conditioner further comprises a fixing support, the fixing support comprises a support end plate and a support surrounding plate, the support surrounding plate is formed by extending in the direction of the exhaust fan along the edge of the support end plate, the support surrounding plate is connected with the exhaust volute, and the support end plate is connected with the exhaust volute. The end, away from the support end plate, of the support coaming is provided with a first flow guide part, and at least one part of the outer diameter of the first flow guide part is larger than that of the support coaming. According to the wall-mounted air conditioner provided by the embodiment of the utility model, the probability that the second motor is burnt or stuck can be reduced, and the use reliability of the second motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly to a wall-mounted air conditioner. Background Art

[0002] At present, most wall-mounted air conditioners are limited by volume and weight, and the functions that can be realized are relatively limited. Usually, they can only cool or heat the indoor air. After the user turns on the air conditioner for a long time, if they feel that the indoor air is dirty and stuffy, the general operation is to open the window for ventilation, which requires manual opening and closing of the window. This is not only troublesome to operate, but also the indoor cold air or warm air will quickly escape from the window during the window-opening period, affecting people's comfort.

[0003] In the prior art solutions, there have emerged some fresh air air conditioners. The fresh air module inhales fresh air from the outside, and the exhaust module discharges the indoor air. However, the exhaust air flow will bring dust into the gap between the stator and the rotor of the motor, increasing the probability of the motor burning out or getting stuck. Therefore, there is still room for improvement. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a wall-mounted air conditioner, which can reduce the probability of the second motor burning out or getting stuck, improve the reliability of the second motor, and thus improve the reliability of the wall-mounted air conditioner.

[0005] The wall-mounted air conditioner according to an embodiment of the utility model includes: a main body, the main body includes: a housing, an accommodation cavity is formed inside the housing, a heat exchange air inlet and a heat exchange air outlet are formed on the housing, and in the height direction of the main body, the heat exchange air inlet is located above the heat exchange air outlet; an indoor heat exchanger, disposed in the accommodation cavity; a base, disposed in the accommodation cavity, on which a volute tongue air duct is formed; a heat exchange fan, disposed in the volute tongue air duct and located on the side of the indoor heat exchanger away from the heat exchange air inlet; a first motor, disposed in the accommodation cavity and located at one end in the length direction of the main body, for driving the heat exchange fan to rotate so that air exchanges heat between the inside of the air conditioner and the indoor space.

[0006] The wall-mounted air conditioner further includes: a second motor, disposed in the accommodation cavity, and the second motor is located at the other end in the length direction of the main body. The second motor is an outer rotor motor, and the second motor includes: a stator part, on which a wound coil is provided; a rotor part, in the radial direction of the stator part, the rotor part is disposed around the outside of the stator part; a motor housing, the motor housing is fixedly connected to the rotor part; an output shaft, the output shaft is fixedly connected to the motor housing.

[0007] The wall-mounted air conditioner further includes: a fresh air fan, which is a centrifugal fan with axial air intake and radial air outlet. The centrifugal fan is located on the side of the heat exchange fan away from the first motor, between the heat exchange fan and the motor housing, and is connected to the output shaft of the second motor.

[0008] The wall-mounted air conditioner further includes: an exhaust fan, which is a centrifugal fan with axial air intake and radial air outlet. In the length direction of the main body, the exhaust fan is located on the side of the fresh air fan facing the second motor, sleeved on the radial outer side of the motor housing, and fixedly connected to the motor housing; the exhaust fan includes an exhaust wheel disc and exhaust blades. The exhaust wheel disc is sleeved on the radial outer side of the motor housing of the second motor and is connected to the motor housing of the second motor. The exhaust blades are connected to the side of the exhaust wheel disc away from the heat exchange fan. There are multiple exhaust blades, and the multiple exhaust blades are arranged circumferentially; wherein, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in the working state.

[0009] The wall-mounted air conditioner further includes: a fresh air volute. A fresh air duct is formed inside the fresh air volute. The fresh air fan is installed inside the fresh air volute. A fresh air inlet and a fresh air outlet are formed on the fresh air volute; when the fresh air fan rotates, outdoor air can enter the fresh air volute from the fresh air inlet, and the outdoor air entering the fresh air volute can enter the room from the fresh air outlet.

[0010] The wall-mounted air conditioner further includes: an exhaust volute, located on the side of the fresh air volute facing the second motor. An exhaust duct is formed inside the exhaust volute. The exhaust fan is installed inside the exhaust volute. An exhaust inlet and an exhaust outlet are formed on the exhaust volute; when the exhaust fan rotates, indoor air can enter the exhaust volute from the exhaust inlet, and the indoor air entering the exhaust volute can be discharged to the outside from the exhaust outlet.

[0011] The wall-mounted air conditioner further includes: a fixing bracket, which is located at the exhaust inlet and is connected to the exhaust volute. The stator part is arranged on the fixing bracket; the fixing bracket includes a bracket end plate and a bracket surrounding plate. The bracket surrounding plate extends along the edge of the bracket end plate towards the direction of the exhaust fan and is connected to the exhaust volute. An installation cavity is defined between the bracket surrounding plate and the bracket end plate. At least a part of the stator part is accommodated in the installation cavity; one end of the bracket surrounding plate away from the bracket end plate has a first guiding part, and at least a part of the outer diameter of the first guiding part is larger than the outer diameter of the bracket surrounding plate.

[0012] The wall-mounted air conditioner according to the embodiment of the present utility model can improve the cleanliness of the inhaled fresh air while realizing the simultaneous exhaust and intake of air in the room.

[0013] By using an outer-rotor motor for the second motor, the exhaust fan is sleeved on the radial outer side of the motor housing, and a part of the second motor in the motor housing is embedded in the exhaust fan, and a part of the output shaft is embedded in the fresh air fan, so that the second motor almost overlaps with the exhaust fan and the fresh air fan in the length direction of the main body, and the parts of the exhaust fan and the fresh air fan located outside the second motor in the axial direction are less, making the overall axial dimension of the two-way ventilation component close to the axial dimension of the second motor, so that the length dimension of the main body can be controlled.

[0014] Among them, the main body part of the second motor is located in the exhaust fan, rather than in the fresh air fan, which can give more air flow space to the fresh air duct and is beneficial to the intake of fresh air. It can be understood that when the wall-mounted air conditioner is in the cooling state, the fresh air module inhales fresh air from the outside to the inside, and the cold quantity generated by the wall-mounted air conditioner can still remain in the room with little cold quantity loss.

[0015] A fixed bracket is arranged at the exhaust air inlet, which can be used to install the second motor. A first guiding part is arranged at one end of the bracket enclosing plate of the fixed bracket facing the exhaust fan. When the indoor air containing dust enters the exhaust air duct from the exhaust air inlet under the drive of the exhaust fan, the first guiding part can guide the air containing dust to flow in a direction deviating from the bracket enclosing plate, so that the dust is far away from the installation cavity defined by the bracket enclosing plate, thereby keeping the dust away from the second motor, especially away from the stator part and the rotor part of the second motor, preventing the dust from entering the gap between the stator part and the rotor part, reducing the probability of the second motor burning out or getting stuck, improving the service reliability of the second motor, and further improving the service reliability of the wall-mounted air conditioner.

[0016] The fresh air fan is arranged on the side of the exhaust fan facing the indoor heat exchanger, which can reduce the loss of cold or heat in the room and improve the comfort when the fresh air is blown into the room. Specifically, the fresh air module where the fresh air fan is located is close to the indoor heat exchanger. The fresh air inhaled 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.

[0017] The fresh air fan is arranged on the side of the exhaust fan facing the indoor heat exchanger, which can also reduce the condensation water entering the air duct when the indoor heat exchanger is cooled. Specifically, the exhaust volute of the exhaust module takes in air from the indoor air inlet, and the exhaust fan takes in air axially, so the exhaust air inlet is located on the side of the exhaust volute away from the indoor heat exchanger. When there is condensation water on one side of the indoor heat exchanger, the condensation water is not easily sucked into the exhaust duct by the exhaust module, reducing the risk of water accumulation and bacteria growth in the exhaust duct. When the fresh air fan rotates, the fresh air module takes in air from the outside. At this time, the condensation water on the indoor heat exchanger will not be sucked into the fresh air duct, reducing the risk of water accumulation and bacteria growth in the fresh air duct.

[0018] In some embodiments, the exhaust wheel disc has a second guide portion on the side facing the fixed bracket, and the second guide portion includes a first extension section and a second extension section, the first extension section extends along the axial direction of the exhaust wheel disc, and the second extension section extends along the radial direction of the exhaust wheel disc, and the first extension section and the second extension section are connected by an arc transition of the arc extension section.

[0019] In some embodiments, a first gap is provided between the first guide portion and the first extension section in the radial direction of the exhaust wheel disc, and a size of the first gap is L1, 1mm≤L1≤5mm.

[0020] In some embodiments, the first air guide portion and the first extension section at least partially overlap along the axial direction of the exhaust fan.

[0021] In some embodiments, the first guide portion includes a first guide ring and a second guide ring, the first guide ring is radially offset outward relative to the bracket enclosure, the second guide ring is connected between the bracket enclosure and the first guide ring, and a first gap is provided between the first guide ring and the first extension section in the radial direction of the exhaust wheel.

[0022] In some embodiments, the motor housing has an opening at one end facing away from the fresh air fan, and the portion of the rotor portion extending out of the motor housing from the opening and the first air guide portion are arranged opposite to each other in the radial direction of the rotor portion.

[0023] In some embodiments, the second motor further includes: a circuit board, the circuit board is disposed in the mounting cavity, and the circuit board and the exhaust fan are arranged opposite to each other in the axial direction of the exhaust fan, and the stator part and the rotor part are arranged between the circuit board and the exhaust wheel; wherein a plane where one end of the first guide part faces the second guide part exceeds a side surface of the circuit board facing the stator part and the rotor part.

[0024] In some embodiments, the distance L2 between the plane where one end of the first flow guiding portion faces the second flow guiding portion and the side surface of the circuit board facing the stator portion and the rotor portion is 0.5 mm - 5 mm.

[0025] In some embodiments, there is a second gap between the circuit board and the rotor portion in the axial direction of the rotor portion, and the size L3 of the second gap is 0.5 mm - 2 mm.

[0026] In some embodiments, a receiving groove is formed at the center of the exhaust air fan in the radial direction, and at least a part of the stator portion of the second motor, at least a part of the rotor portion, and at least a part of the motor housing are accommodated in the receiving groove.

[0027] In some embodiments, the fresh air fan includes a fresh air wheel disc and fresh air blades. The fresh air blades are located at the outer edge of the fresh air wheel disc and extend along the axial direction of the fresh air wheel disc. The total thickness of the fresh air wheel disc and the fresh air blades in the axial direction is h1; the total thickness of the exhaust air wheel disc and the exhaust air blades in the axial direction is h2; wherein, h1 < h2.

[0028] In some embodiments, the total thickness of the exhaust air wheel disc and the exhaust air blades in the axial direction is h2; the total thickness of the stator portion, the rotor portion and the motor housing in the axial direction is h3; wherein, h3 > h2.

[0029] In some embodiments, the fresh air fan includes a fresh air wheel disc and fresh air blades. The fresh air blades are located at the outer edge of the fresh air wheel disc and extend along the axial direction of the fresh air wheel disc. The total thickness of the fresh air wheel disc and the fresh air blades in the axial direction is h1; the total thickness of the stator portion, the rotor portion and the motor housing in the axial direction is h3, wherein, h1 > h3.

[0030] In some embodiments, the exhaust air blades are located at the edge of the exhaust air wheel disc and extend along the axial direction of the exhaust air wheel disc away from the fresh air fan; wherein, the exhaust air fan further includes a convex portion provided on the exhaust air wheel disc, and the convex portion extends in the direction of the exhaust air fan facing the fresh air fan, so that a receiving groove for the second motor is formed on the side of the convex portion close to the second motor; at least a part of the stator portion and at least a part of the rotor portion are accommodated in the receiving groove.

[0031] In some embodiments, the fresh air volute includes: a first volute located on a side of the exhaust volute facing the heat exchange fan, and the first volute is detachably connected to the exhaust volute; a second volute located on a side of the first volute facing the heat exchange fan, and the second volute is detachably connected to the first volute, and the first volute is located between the exhaust volute and the second volute.

[0032] In some embodiments, the first volute includes a first volute end plate and a first volute shroud, and the first volute shroud extends along an edge of the first volute end plate in a direction facing the heat exchange fan; wherein, a central partial area of the first volute end plate forms a recessed portion facing inside the fresh air fan, and at least a part of the protruding portion is located within the recessed portion.

[0033] In some embodiments, a perforated portion is provided at a center of the recessed portion, and the output shaft is connected to the fresh air fan through the perforated portion.

[0034] In some embodiments, the area of the outer circular surface of the fresh air fan is S1, and the area of the outer circular surface of the exhaust fan is S2. S1 = ΠD1*h1, where D1 is the outer diameter of the fresh air fan, and h1 is the total axial thickness of the fresh air wheel disc and the fresh air blades of the fresh air fan; S2 = ΠD2*h2, where D2 is the outer diameter of the exhaust fan, and h2 is the total axial thickness of the exhaust wheel disc and the exhaust blades of the exhaust fan; and it satisfies S1 > S2.

[0035] In some embodiments, the fresh air fan includes: a fresh air wheel disc coaxially arranged with the second motor and connected to the output shaft of the second motor; fresh air blades, including first fresh air blades, and the first fresh air blades extend from the fresh air wheel disc in a direction away from the exhaust fan.

[0036] In some embodiments, the fresh air blades further include second fresh air blades, and the second fresh air blades extend from the fresh air wheel disc in a direction close to the exhaust fan.

[0037] In some embodiments, in the axial direction of the fresh air fan, the length of the second fresh air blades is less than the length of the first fresh air blades.

[0038] In some embodiments, a wheel disc hole is formed on the fresh air wheel disc, and the distance from the wheel disc hole to the center of the fresh air wheel disc is less than the distance from the fresh air blades to the center of the fresh air wheel disc.

[0039] In some embodiments, the second volute includes: a second volute half body, which is located on the side of the first volute facing the heat exchange fan, and the second volute half body is detachably connected to the first volute. An axial ventilation opening is provided at the center of the second volute half body in the radial direction. A volute cavity is formed between the second volute half body and the first volute. The fresh air fan is located in the volute cavity, and the axial air inlet end of the fresh air fan faces the axial ventilation opening. The second volute half body and the first volute enclose the fresh air outlet.

[0040] In some embodiments, the second volute includes: a fan cover, which is located on the side of the second volute half body facing the heat exchange fan, and the fan cover is detachably connected to the second volute half body. The cavity enclosed by the fan cover and the second volute half body is the fresh air cavity, and the fresh air inlet is enclosed by the fan cover and the second volute half body.

[0041] In some embodiments, the wall-mounted air conditioner further includes: a purification component, which is installed in the fresh air cavity, and the purification component is connected to the second volute. When the fresh air fan rotates, outdoor air can enter the fresh air volute from the fresh air inlet, and the outdoor air entering the fresh air volute can blow through the purification component and then enter the room from the fresh air outlet; the purification component includes a filter screen, and the filter screen covers the axial ventilation opening.

[0042] In some embodiments, a part of the fresh air cavity forms an empty cavity, and the cavity is located on the side of the purification component away from the fresh air fan, and the fresh air inlet communicates with the cavity.

[0043] In some embodiments, the fan cover forms a positioning convex bulge on the side facing the indoor heat exchanger; the base has an end plate at one end close to the fan cover, and the end plate is used to install the indoor heat exchanger and the heat exchange fan; a positioning recess is formed on the end plate, and the positioning convex bulge and the positioning recess are inserted and matched with each other so that the fan cover and the base overlap at least partially in the transverse direction.

[0044] In some embodiments, the exhaust volute includes a wind guiding ring, the wind guiding ring is in the shape of a circular tube, and the diameter of the wind guiding ring gradually decreases in the direction facing the heat exchange fan. The area enclosed by the wind guiding ring forms the exhaust air inlet.

[0045] In some embodiments, the edge of the exhaust blade away from the exhaust wheel disc is the blade side edge, and the distance between the part of the blade side edge close to the second motor and the exhaust wheel disc decreases. All the exhaust blades form a side edge depression at the place where the distance of the blade side edge decreases; the end of the wind guiding ring is located in the side edge depression.

[0046] The wall-mounted air conditioner according to an embodiment of the present utility model includes: a main body, the main body includes: a housing, an accommodation cavity is formed inside the housing, a heat exchange air inlet and a heat exchange air outlet are formed on the housing, in the height direction of the main body, the heat exchange air inlet is located above the heat exchange air outlet; an indoor heat exchanger disposed in the accommodation cavity; a base disposed in the accommodation cavity, on which a volute tongue air duct is formed; a heat exchange fan disposed in the volute tongue air duct and located on a side of the indoor heat exchanger away from the heat exchange air inlet; a first motor disposed in the accommodation cavity and located at one end in the length direction of the main body, for driving the heat exchange fan to rotate so that air exchanges heat between the inside of the air conditioner and the indoor space;

[0047] The wall-mounted air conditioner further includes: a second motor disposed in the accommodation cavity, and the second motor is located at the other end in the length direction of the main body, the second motor is an outer rotor motor, and the second motor includes: a stator portion, on which a wound coil is provided; a rotor portion, in the radial direction of the stator portion, the rotor portion is disposed around the outside of the stator portion; a motor housing, the motor housing is fixedly connected to the rotor portion; an output shaft, the output shaft is fixedly connected to the motor housing;

[0048] The wall-mounted air conditioner further includes: a fresh air fan, the fresh air fan is a centrifugal fan with axial air inlet and radial air outlet, the centrifugal fan is located on a side of the heat exchange fan away from the first motor, the fresh air fan is located between the heat exchange fan and the motor housing, and the fresh air fan is connected to the output shaft of the second motor;

[0049] The wall-mounted air conditioner further includes: an exhaust fan, the exhaust fan is a centrifugal fan with axial air inlet and radial air outlet, in the length direction of the main body, the exhaust fan is located on a side of the fresh air fan facing the second motor, the exhaust fan is sleeved on the radial outside of the motor housing, and the exhaust fan is fixedly connected to the motor housing.

[0050] The exhaust fan includes an exhaust wheel disc and exhaust blades, the exhaust wheel disc is sleeved on the radial outside of the motor housing of the second motor, and the exhaust wheel disc is connected to the motor housing of the second motor, the exhaust blades are connected to a side of the exhaust wheel disc away from the heat exchange fan, the exhaust blades are multiple, and the multiple exhaust blades are arranged circumferentially.

[0051] Wherein, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in the working state.

[0052] The wall-mounted air conditioner further includes: a fresh air volute in which a fresh air duct is formed, the fresh air fan is installed in the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; rotation of the fresh air fan can cause outdoor air to enter the fresh air volute from the fresh air inlet, and can cause the outdoor air entering the fresh air volute to enter the room from the fresh air outlet.

[0053] The wall-mounted air conditioner further includes: an exhaust volute located on a side of the fresh air volute facing the second motor, an exhaust duct is formed in the exhaust volute, the exhaust fan is installed in the exhaust volute, and an exhaust inlet and an exhaust outlet are formed on the exhaust volute; rotation of the exhaust fan can cause indoor air to enter the exhaust volute from the exhaust inlet, and can cause the indoor air entering the exhaust volute to be discharged to the outside from the exhaust outlet.

[0054] The wall-mounted air conditioner further includes: a fixing bracket located at the exhaust inlet, and the fixing bracket is connected to the exhaust volute, and the stator part is arranged on the fixing bracket.

[0055] The fixing bracket includes a bracket end plate and a bracket surrounding plate, the bracket surrounding plate extends along an edge of the bracket end plate in a direction towards the exhaust fan, and the bracket surrounding plate is connected to the exhaust volute. An installation cavity is defined between the bracket surrounding plate and the bracket end plate, and at least a part of the stator part is accommodated in the installation cavity; one end of the bracket surrounding plate away from the bracket end plate has a first flow guiding part, the first flow guiding part includes a first flow guiding ring and a second flow guiding ring, the first flow guiding ring is radially offset outwards relative to the bracket surrounding plate, and the second flow guiding ring is connected between the bracket surrounding plate and the first flow guiding ring.

[0056] In some embodiments, a second flow guiding part with an arc shape is provided on a side of the exhaust wheel disc facing the fixing bracket, and a first gap is provided between the second flow guiding part and the first flow guiding ring in the radial direction of the exhaust wheel disc.

[0057] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0058] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0059] Figure 1 Is a perspective view of the main body of the wall-mounted air conditioner in some embodiments (part of the casing is hidden in the figure);

[0060] Figure 2 Front view of the main body of a wall-mounted air conditioner in some other embodiments (part of the casing is hidden in the figure);

[0061] Figure 3 Stereogram of the interior of the main body in one direction in some embodiments;

[0062] Figure 4 Stereogram of the interior of the main body in another direction in some embodiments;

[0063] Figure 5 Stereogram of a two-way ventilation component in one direction in some embodiments;

[0064] Figure 6 Stereogram of a two-way ventilation component in another direction in some embodiments;

[0065] Figure 7 Side view of a two-way ventilation component in some embodiments;

[0066] Figure 8 For Figure 7 Cross-sectional view along the A-A direction in;

[0067] Figure 9 For Figure 8 Enlarged view of part B shown in;

[0068] Figure 10 Is Figure 8 Structural schematic diagram of the exhaust volute shown in;

[0069] Figure 11 Is Figure 10 Cross-sectional view of the exhaust volute shown in;

[0070] Figure 12 Exploded view of the second motor in some embodiments;

[0071] Figure 13 Cross-sectional view of the second motor in some embodiments;

[0072] Figure 14 Cross-sectional view of the exhaust fan in some embodiments;

[0073] Figure 15 Front view of the fresh air fan in some embodiments;

[0074] Figure 16 Side view of the fresh air fan in some embodiments;

[0075] Figure 17 Exploded view of the two-way ventilation component (part of the parts are hidden) in one direction in some embodiments;

[0076] Figure 18Exploded view of the two-way ventilation component in another direction in some embodiments;

[0077] Figure 19 Stereogram of the two-way ventilation component in some other embodiments.

[0078] Reference numerals:

[0079] Wall-mounted air conditioner 10000,

[0080] Main body 1000,

[0081] Housing 1, accommodation cavity V1, first chamber V11, second chamber V12,

[0082] Heat exchange air inlet 101, heat exchange air outlet 102, housing air inlet 103, first connecting air duct V04, housing air outlet 105, indoor heat exchanger 2,

[0083] Base 3, volute tongue air duct V03, end plate 31, positioning depression 311,

[0084] Heat exchange fan 41, first motor 42,

[0085] Second motor 5, stator part 51, rotor part 52, motor housing 531, output shaft 532, circuit board 54, second gap 540, fresh air fan 6, fresh air wheel disc 61, wheel disc hole 612, fresh air blades 62, first fresh air blade 621, second fresh air blade 622, exhaust fan 7, accommodation groove V07, exhaust wheel disc 71, exhaust blades 72, blade side edge 721, side edge depression 73, protruding part 74, second guide part 75, first extension section 751, second extension section 752, arc extension section 753,

[0086] Fresh air volute 8, fresh air duct V01, volute cavity V011, fresh air chamber V012, cavity V0121, fresh air inlet 801, fresh air outlet 802, installation opening 803, purification air inlet 804,

[0087] First volute 81, first volute end plate 811, first volute enclosing plate 812, depression part 813, perforated part 814,

[0088] Second volute 82, second volute half body 821, axial ventilation opening 8211, fan cover 822, positioning convex hull 8221,

[0089] Exhaust volute 9, exhaust duct V02, exhaust air inlet 901, exhaust air outlet 902, indoor exhaust air outlet 903, air guide ring 91, fixed bracket 92, installation cavity 9201, first gap 9202, bracket end plate 921, bracket enclosing plate 922, first guide part 923, first guide ring 9231, second guide ring 9232,

[0090] Purifying component 11, filter net 111, electric control box 13, fresh air inlet pipe 141, and exhaust air outlet pipe 142. Specific implementation manner

[0091] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0092] In the description of the present utility model, it should be understood that the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0093] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0094] The solution of this application introduces the structure of a wall-mounted air conditioner 10000.

[0095] Before that, the structure of a common air conditioner will be introduced first. A common air conditioner is a split-type air conditioner, which includes an indoor unit and an outdoor unit. The indoor unit and the outdoor unit are connected by pipelines to transfer refrigerant. The indoor unit includes an indoor heat exchanger 2 and a heat exchange fan 41.

[0096] The outdoor unit includes a compressor, an outdoor heat exchanger, an outdoor fan, and a throttling member. The compressor, the outdoor heat exchanger, the throttling member, and the indoor heat exchanger 2 are connected in sequence to form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with air through the outdoor heat exchanger and the indoor heat exchanger 2 respectively to achieve the cooling mode or the heating mode of the air conditioner.

[0097] The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form high-pressure refrigerant.

[0098] The outdoor heat exchanger is configured to exchange heat between the outdoor air and the refrigerant flowing in the outdoor heat exchanger. For example, the outdoor heat exchanger operates as a condenser in the cooling mode of the air conditioner, so that the refrigerant compressed by the compressor dissipates heat to the outdoor air through the outdoor heat exchanger and condenses. The outdoor heat exchanger operates as an evaporator in the heating mode of the air conditioner, so that the depressurized refrigerant absorbs heat from the outdoor air through the outdoor heat exchanger and evaporates.

[0099] In some embodiments, the outdoor heat exchanger further includes heat exchange fins to increase the contact area between the outdoor air and the refrigerant flowing in the outdoor heat exchanger, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

[0100] The outdoor fan is configured to suck external air into the outdoor unit and send the outdoor air that has exchanged heat with the outdoor heat exchanger to the outside. The outdoor fan provides power for the flow of the outdoor air.

[0101] The throttling member is connected between the outdoor heat exchanger and the indoor heat exchanger 2. The throttling member is used to adjust the pressure of the refrigerant flowing through the outdoor heat exchanger and the indoor heat exchanger 2 to adjust the refrigerant flow rate flowing between the outdoor heat exchanger and the indoor heat exchanger 2. The flow rate and pressure of the refrigerant flowing between the outdoor heat exchanger and the indoor heat exchanger 2 will affect the heat exchange performance of the outdoor heat exchanger and the indoor heat exchanger 2. The throttling member can be a throttle tube, an electronic valve, etc. When the throttling member is an electronic valve, the opening degree of the throttling member is adjustable to adjust the flow rate and pressure of the refrigerant flowing through the throttling member.

[0102] In some solutions, the air conditioner further includes a four-way valve. The four-way valve is connected in the refrigerant circuit and is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner executes the cooling mode or the heating mode.

[0103] The indoor heat exchanger 2 is configured to exchange heat between the indoor air and the refrigerant flowing in the indoor heat exchanger 2. In some embodiments, the indoor heat exchanger 2 further includes heat exchange fins to increase the contact area between the indoor air and the refrigerant flowing in the indoor heat exchanger 2, thereby improving the heat exchange efficiency between the indoor air and the refrigerant.

[0104] The heat exchange fan 41 is configured to suck indoor air into the indoor unit and send the indoor air after heat exchange with the indoor heat exchanger 2 back into the room, and the heat exchange fan 41 provides power for the flow of the indoor air.

[0105] The air conditioner further includes a control device which is mainly used to control the operating frequency of the compressor and the opening degree of the throttling element. Some control devices can also control the rotational speed of the outdoor fan and the rotational speed of the heat exchange fan 41, etc. The control device is connected to the compressor, the throttling element, the outdoor fan and the heat exchange fan 41 through data lines to transmit communication information.

[0106] The control device includes a processor which may include a central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), and may be configured to perform the corresponding operations described in the control device when the processor executes a program stored in a non-transitory computer-readable medium coupled to the control device.

[0107] The non-transitory computer-readable storage medium may include a magnetic storage device (e.g., a hard disk, a floppy disk or a magnetic tape), a smart card or a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick or a key drive).

[0108] A wall-mounted air conditioner 10000 proposed by the present utility model is an indoor unit. The wall-mounted air conditioner 10000 is usually installed on a wall, for example, it can be installed in the upper area of the indoor wall.

[0109] The wall-mounted air conditioner 10000 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0110] Refer to Figure 1 and Figure 2 , the wall-mounted air conditioner 10000 according to an embodiment of the present utility model includes: a main body 1000.

[0111] The main body 1000 includes: a housing 1. An accommodation cavity V1 is formed inside the housing 1. The housing 1 constitutes the overall outer shape structure of the wall-mounted air conditioner 10000 and can play a protective role.

[0112] Generally, the housing 1 is an elongated housing as a whole. The length direction of the housing 1 is arranged along the horizontal direction, that is, the housing 1 is installed on the wall horizontally. In actual products, in order to drain condensate, in some embodiments, the housing 1 is installed on the wall horizontally and forms a small angle with the horizontal plane.

[0113] Reference Figure 3 and Figure 4 ,the main body 1000 further includes: an indoor heat exchanger 2, and the indoor heat exchanger 2 is disposed in the accommodation cavity V1. As described above, the indoor heat exchanger 2 is a part of the refrigerant circuit, and refrigerant flows inside it, which is used to cool or heat the air flowing across the surface of the indoor heat exchanger 2. In the wall-mounted air conditioner 10000, the indoor heat exchanger 2 is usually arranged to extend along the length direction of the housing 1. For example, the indoor heat exchanger 2 is a two-fold or three-fold heat exchanger, and each fold of the indoor heat exchanger 2 is a plate-like structure extending along the length direction.

[0114] Reference Figure 3 and Figure 4 ,the main body 1000 further includes: a base 3, and the base 3 is disposed in the accommodation cavity V1. The base 3 is an installation and support structure inside the main body 1000, and the indoor heat exchanger 2 can be installed on the base 3. Specifically, a volute tongue air duct V03 is formed on the base 3, and after the indoor air enters the housing 1, the flow direction is guided through the volute tongue air duct V03, ensuring that the resistance suffered by the indoor air when flowing through the indoor heat exchanger 2 is relatively small.

[0115] Reference Figure 4 ,the main body 1000 further includes: a heat exchange fan 41, and the heat exchange fan 41 is disposed in the volute tongue air duct V03. In the solution of the present application, the heat exchange fan 41 can be selected as a cross-flow fan, which has relatively low noise and a large air volume, and the air outlet wind speed of the cross-flow fan is relatively evenly distributed along the axial direction of the cross-flow fan, which is beneficial to increasing the air supply distance and the air supply range. Moreover, by using a cross-flow fan and arranging the cross-flow fan along the length direction of the main body 1000, it is beneficial to drive the air flow to flow through the entire indoor heat exchanger 2, ensuring the balance of the heat exchange efficiency at each position of the indoor heat exchanger 2.

[0116] Reference Figure 4 ,the main body 1000 further includes: a first motor 42, and the first motor 42 is disposed in the accommodation cavity V1. The first motor 42 is used to drive the heat exchange fan 41 to rotate, so that heat exchange between the air inside the air conditioner and the indoor space can be carried out.

[0117] Please refer to again Figures 2 - 4 ,a heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the housing 1. When the heat exchange fan 41 operates, indoor air is sucked into the housing 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 through the heat exchange air outlet 102.

[0118] Thus, the adjustment of the indoor environmental temperature is realized. The indoor heat exchanger 2 can be used as an evaporator to provide a cooling air flow towards the indoor space through the heat exchange air outlet 102, or the indoor heat exchanger 2 can be used as a condenser to provide a heating air flow towards the indoor space through the heat exchange air outlet 102.

[0119] In the solution of this application, in the height direction of the main body 1000, the heat exchange air inlet 101 is located above the heat exchange air outlet 102, which facilitates air intake from above and air outlet from below. In this application, the height direction of the main body 1000 is the up-and-down direction.

[0120] It can be understood that the main body 1000 is usually installed on the wall. To avoid interfering with people's daily lives, the position where the main body 1000 is hung is usually relatively high. By setting the main body 1000 to blow out the heat exchange air from below, the blown heat exchange air is not easily blocked by the roof or the ground. In this way, the resistance consumption during the blowing process of the heat exchange air is small, and the air supply range is wide, so that the heat exchange air can flow to the entire indoor space as soon as possible, improving the heat exchange efficiency.

[0121] Refer to Figure 1 and Figure 2 , the heat exchange air inlet 101 is located above the heat exchange air outlet 102. The heat exchange air inlet 101 can intake air from above, which can avoid intake air from the heat exchange air outlet 102 and prevent the heat exchange air from being directly sucked into the heat exchange air inlet 101 after being blown out from the heat exchange air outlet 102, reducing the process of the heat exchange air idling without participating in indoor heat exchange.

[0122] In some specific embodiments, the heat exchange air inlet 101 is located at the top of the casing 1, that is, in an area that is not visible to the user, hiding the heat exchange air inlet 101 can improve the aesthetic appearance.

[0123] In some embodiments, the heat exchange air outlet 102 is located directly in front of the casing 1, that is, the heat exchange air outlet 102 blows air towards the front side of the main body 1000. It can be understood that the side where the main body 1000 is connected to the wall is usually called the back or the rear side, and the side opposite to the rear side is called the front side. Therefore, when the heat exchange air outlet 102 is located directly in front of the casing 1, the air outlet is away from the wall, and the blowing resistance is small, and the air supply range is wide.

[0124] In some other embodiments, the heat exchange air outlet 102 is located at the front side of the casing 1 and close to the bottom, or it can be said that the heat exchange air outlet 102 is located at the front lower corner of the casing 1. At this time, the heat exchange air blown out by the heat exchange air outlet 102 will flow downward while flowing forward. In this way, after the heat exchange air is sent to a certain distance, the heat exchange air can sink and fall on people or objects on the ground, enabling people or objects on the ground to be in a comfortable indoor environment as soon as possible.

[0125] In the solution of this application, 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 driving part that drives the indoor air to exchange heat with the indoor heat exchanger 2 by rotation, and is also a power driving part for air supply.

[0126] The heat exchange fan 41 is placed on one side of the indoor heat exchanger 2 away from the heat exchange air inlet 101, which can evenly distribute the aerodynamic force generated when the heat exchange fan 41 rotates. Part of it is distributed to the air inlet side, enabling the inhaled air to overcome the air resistance generated by the indoor heat exchanger 2 when flowing into the volute tongue air duct V03, and the other part is distributed to the air supply side, enabling the heat-exchanged air to be blown out from the heat exchange air outlet 102 with a longer conveying distance.

[0127] In the solution of this application, as Figure 4 shown, the first motor 42 is located at one end of the main body 1000 in the length direction. This facilitates the installation and maintenance of the first motor 42, and the overall main body 1000 does not need to become too high or too thick due to the setting of the first motor 42. Here, the height direction of the main body 1000 is consistent with the up and down direction, and the thickness direction of the main body 1000 is consistent with the front and back direction.

[0128] Referring to Figure 3 and Figure 4 In the solution of this application, the wall-mounted air conditioner 10000 further includes: a second motor 5. The second motor 5 is arranged in the accommodation cavity V1 and is located at the other end of the main body 1000 in the length direction.

[0129] In this way, the first motor 42 and the second motor 5 are located at both ends of the main body 1000 in the length direction. On the one hand, the two motors are separated and far apart, resulting in less mutual electromagnetic interference. On the other hand, the two motors are arranged at both ends of the main body 1000 in the length direction, rather than in the thickness or height direction of the main body 1000, making the main body 1000 of the wall-mounted air conditioner 10000 slender in shape, with a slender, thin and light appearance.

[0130] Referring to Figure 8 and Figure 9 shown, the second motor 5 includes: a stator part 51 and a rotor part 52. The stator part 51 and the rotor part 52 are the main parts of the second motor 5. The stator part 51 has a wound coil. After alternating current is passed through the coil, an alternating magnetic field is generated, and the rotor part 52 generates induction and rotates in the alternating magnetic field.

[0131] Optionally, the rotor part 52 can be a magnetic ring or a magnetic tile. The rotor part 52 is preferably a magnetic ring, which can reduce magnetic leakage loss, enhance magnetic flux, and improve the power output efficiency of the second motor 5. Moreover, when using a magnetic ring, the magnetic field distribution is uniform, the anti-interference ability is good, and the mechanical precision is higher.

[0132] Referring to Figures 8 - 9, the second motor 5 is an outer rotor motor. In the radial direction of the stator part 51, the rotor part 52 is arranged around the outside of the stator part 51. Selecting an outer rotor motor for the second motor 5 not only has a simple structure, but also, since the rotor part 52 is arranged around the outside of the stator part 51 in the radial direction of the stator part 51, the diameter size of the rotor part 52 is large, and a relatively large torque can be obtained, which can be used in scenarios such as low-speed high-torque and direct drive. That is, when the second motor 5 outputs power outward, a speed reducer does not need to be provided to reduce speed and increase torque, saving the space occupied by the speed reducer.

[0133] In addition, the rotor part 52 is located radially outside the stator part 51, with a relatively large heat dissipation area and good heat dissipation performance, which is beneficial to the stable operation of the second motor 5. And after being arranged in this way, the diameter size of the second motor 5 can be controlled to be relatively small, without occupying the space of the air flow channel.

[0134] Refer to Figures 8 - 9 , Figures 12 - 13 , the second motor 5 further includes: a motor housing 5311, and the motor housing 5311 can support and protect the main body part of the second motor 5. The motor housing 5311 is fixedly connected to the rotor part 52, so that the motor housing 5311 and the rotor part 52 rotate synchronously. In this way, the rotor part 52 can be fixed by the motor housing 5311, which is convenient for connection with external structures.

[0135] The second motor 5 further includes: an output shaft 532, and the output shaft 532 is fixedly connected to the motor housing 5311, so that the output shaft 532, the motor housing 5311 and the rotor part 52 rotate synchronously.

[0136] Refer to Figure 8 , the wall-mounted air conditioner 10000 further includes: a fresh air fan 6, and the fresh air fan 6 is a centrifugal fan with axial air intake and radial air outlet. The centrifugal fan is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 5311, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0137] Refer to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: an exhaust fan 7, and the exhaust fan 7 is a centrifugal fan with axial air intake and radial air outlet. In the length direction of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is sleeved on the radial outside of the motor housing 5311, and the exhaust fan 7 is fixedly connected to the motor housing 5311.

[0138] Among them, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously in the working state.

[0139] The characteristics of the centrifugal fan itself include a compact structure, a large air volume, low noise, and the fan noise decreases significantly when the rotational speed drops. Therefore, for the fresh air fan 6 and the exhaust fan 7, centrifugal fans of smaller sizes can be selected to meet the large air volume requirements. The centrifugal fan has small vibration noise and is not prone to resonance with the indoor heat exchanger 2, effectively controlling the overall vibration and noise of the wall-mounted air conditioner 10000.

[0140] Both the fresh air fan 6 and the exhaust fan 7 adopt centrifugal fans, and the air directions of the fresh air fan 6 and the exhaust fan 7 can be reasonably arranged. Specifically, the fresh air fan 6 takes in air axially and discharges air radially, and the exhaust fan 7 takes in air axially and discharges air radially. The fresh air fan 6 and the exhaust fan 7 take in air from the two ends far away from each other, and then after being driven, the fresh air and the exhaust air are both discharged radially. The flow paths of the fresh air and the exhaust air do not need to overlap axially, and the paths do not need to cross. This helps to reduce the avoidance corner design of the fresh air and exhaust air paths, reduce wind resistance and energy consumption, ensure the air volume, and reduce noise.

[0141] In the solution of the present application, the exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust wheel disc 71 is sleeved on the radial outer side of the motor housing 5311 of the second motor 5, and the exhaust wheel disc 71 is connected to the motor housing 5311 of the second motor 5. The exhaust blades 72 are connected to the side of the exhaust wheel disc 71 away from the heat exchange fan 41. There are multiple exhaust blades 72, and the multiple exhaust blades 72 are arranged circumferentially.

[0142] Refer to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: a fresh air volute 8. A fresh air duct V01 is formed inside the fresh air volute 8. The fresh air fan 6 is installed inside the fresh air volute 8. A fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8. When the fresh air fan 6 rotates, outdoor air can enter the fresh air volute 8 from the fresh air inlet 801, and the outdoor air entering the fresh air volute 8 can enter the room from the fresh air outlet 802.

[0143] Refer to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: an exhaust volute 9. The exhaust volute 9 is located on the side of the fresh air volute 8 facing the second motor 5. An exhaust duct V02 is formed inside the exhaust volute 9. The exhaust fan 7 is installed inside the exhaust volute 9. An exhaust inlet 901 and an exhaust outlet 902 are formed on the exhaust volute 9. When the exhaust fan 7 rotates, indoor air can enter the exhaust volute 9 from the exhaust inlet 901, and the indoor air entering the exhaust volute 9 can be discharged to the outside from the exhaust outlet 902.

[0144] In the solution of this application, a fresh air volute 8 and a fresh air fan 6 constitute a fresh air module. The fresh air fan 6 is arranged in a fresh air duct V01 and is used to drive air flow to be inhaled from a fresh air inlet 801 and discharged into the room through a fresh air outlet 802. The operation of the fresh air fan 6 provides the power for the fresh air flow.

[0145] Thus, by setting the fresh air duct V01 to cooperate with the fresh air fan 6, when the air in the room is relatively dirty or the air quality is average, the relatively fresh air outdoors can be driven into the indoor environment by the fresh air fan 6 to improve the indoor air flow environment.

[0146] In the solution of this application, an exhaust volute 9 and an exhaust fan 7 constitute an exhaust module. The exhaust fan 7 is arranged in an exhaust duct V02 and is used to drive air flow to be inhaled from an exhaust inlet 901 and discharged out of the room through an exhaust outlet 902. The operation of the exhaust fan 7 provides the power for the dirty air flow.

[0147] Thus, by setting the exhaust duct V02 to cooperate with the exhaust fan 7, when the air in the room is relatively dirty or the air quality is average, the dirty air flow in the indoor space can be sucked away and discharged by the exhaust fan 7. After the indoor air volume decreases in this way, fresh air will be inhaled from the outdoors or from other rooms through doors and windows, etc., to reduce the dirtiness of the indoor air.

[0148] Refer to Figure 8 and Figure 9 , the wall-mounted air conditioner 10000 further includes: a fixing bracket 92. The fixing bracket 92 is located at the exhaust inlet 901, and the fixing bracket 92 is connected to the exhaust volute 9. The stator part 51 is arranged on the fixing bracket 92. The fixing bracket 92 can be used as a motor bracket to fix the second motor 5. Specifically, the fixing bracket 92 can fix the stator part 51 of the second motor 5.

[0149] Refer to Figure 8 and 9 , the fixing bracket 92 includes a bracket end plate 92131 and a bracket surrounding plate 922. The bracket surrounding plate 922 extends along the edge of the bracket end plate 92131 towards the direction of the exhaust fan 7 and is connected to the exhaust volute 9, thereby fixing the fixing bracket 92 on the exhaust volute 9. An installation cavity 9201 is defined between the bracket surrounding plate 922 and the bracket end plate 92131, and at least a part of the stator part 51 is accommodated in the installation cavity 9201.

[0150] One end of the bracket surrounding plate 922 away from the bracket end plate 92131 has a first flow guiding part 923, and at least a part of the outer diameter of the first flow guiding part 923 is larger than the outer diameter of the bracket surrounding plate 922.

[0151] When the indoor air containing dust enters the exhaust air duct V02 from the exhaust air inlet 901 driven by the exhaust fan 7, the first air guiding part 923 has the effects of blocking and guiding air, guiding the air containing dust to flow in a direction deviating from the support shroud 922, so that the dust is kept away from the installation cavity 9201 defined by the support shroud 922, thereby keeping the dust away from the second motor 5, especially away from the stator part 51 and the rotor part 52 of the second motor, preventing the dust from entering the gap between the stator part 51 and the rotor part 52, thereby reducing the probability of the second motor 5 being burned out or stuck, improving the reliability of use of the second motor 5, and further improving the reliability of use of the wall-mounted air conditioner 10000.

[0152] In the solution of the present application, the second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8 and the exhaust air volute 9 form a two-way ventilation assembly, and the two-way ventilation assembly is arranged in the main body 1000. The two-way ventilation assembly can provide fresh air for the room and discharge the indoor air to the outside.

[0153] It should be noted that the operation mode of the two-way ventilation assembly in the wall-mounted air conditioner 10000 can be set according to actual use requirements. In some embodiments, the two-way ventilation assembly can simultaneously operate in the fresh air mode and the exhaust air mode, that is, the fresh air duct V01 and the exhaust air duct V02 can be opened at the same time. While the indoor dirty air flows to the outdoor space, the fresh air outside can also enter the indoor space. Through the combined air flow drive of one in and one out, it is beneficial to increase the improvement efficiency of the air flow in the indoor space, so as to meet the user's needs in time when the user urgently needs to discharge or update the indoor air.

[0154] Moreover, since fresh outdoor air is supplemented into the room while discharging the indoor air to the outside, the indoor air volume is kept sufficient, making it easier to suck away the indoor air. For example, when there are irritating gases (such as gases released from home improvement materials), gas leakage or other gases in the room, the two-way ventilation assembly can be set to simultaneously operate in the fresh air mode and the exhaust air mode to achieve rapid ventilation. And compared with the design of simply introducing fresh air in the conventional fresh air structure, the two-way ventilation assembly of the present application has a larger purification flow rate per unit time, higher ventilation efficiency and faster purification effect.

[0155] Moreover, during ventilation, it is avoided that the indoor temperature changes violently like directly opening a window, which may cause discomfort to the indoor personnel due to sudden temperature rise or fall. And the position of the main body 1000 is relatively high, and the ventilation position will not cause discomfort due to being too close to people.

[0156] In some other embodiments, the two-way ventilation component can operate in the fresh air mode and the exhaust air mode alternatively, that is, when the two-way ventilation component turns on the fresh air mode, the exhaust air mode is shut down. At this time, only the fresh air duct V01 is ventilated, and the exhaust air duct V02 is not ventilated. Or when the two-way ventilation component turns on the exhaust air mode, the fresh air mode is shut down. At this time, the fresh air duct V01 is not ventilated, and the exhaust air duct V02 is ventilated.

[0157] In some embodiments, a two-way ventilation component is provided in the wall-mounted air conditioner 10000, such as Figure 8 shown, the two-way ventilation component includes: a second motor 5, a fresh air fan 6, an exhaust air fan 7, a fresh air volute 8 and an exhaust air volute 9.

[0158] In this embodiment, the second motor 5 is an external rotor motor. The second motor 5 includes: a stator part 51, a rotor part 52 and a motor housing 5311. The stator part 51 has a wound coil. In the radial direction of the stator part 51, the rotor part 52 is arranged around the outside of the stator part 51. The motor housing 5311 includes a motor housing 5311 and an output shaft 532. The motor housing 5311 is fixedly connected to the rotor part 52, the output shaft 532 is fixedly connected to the motor housing 5311, and the output shaft 532 extends along the axial direction of the motor housing 5311 toward the side of the heat exchange fan 41.

[0159] In this embodiment, the fresh air fan 6 is a centrifugal fan with axial air inlet and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 5311, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0160] In this embodiment, the exhaust air fan 7 is a centrifugal fan with axial air inlet and radial air outlet. In the length direction of the main body 1000, the exhaust air fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust air fan 7 is sleeved on the radial outside of the motor housing 5311, and the exhaust air fan 7 is fixedly connected to the motor housing 5311. The second motor 5 drives the fresh air fan 6 and the exhaust air fan 7 to rotate synchronously in the working state.

[0161] In this embodiment, as Figure 8 shown, 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. As Figure 6 shown, a fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8. The rotation of the fresh air fan 6 can make the outdoor air enter the fresh air volute 8 from the fresh air inlet 801, and can make the outdoor air entering the fresh air volute 8 enter the room from the fresh air outlet 802.

[0162] In this embodiment, as Figure 8As shown in the figure, 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 inside the exhaust air volute 9. The exhaust air fan 7 is installed inside the exhaust air volute 9. An exhaust air inlet 901 and an exhaust air outlet 902 are formed on the exhaust air volute 9. When the exhaust air fan 7 rotates, indoor air can enter the exhaust air volute 9 from the exhaust air inlet 901, and the indoor air entering the exhaust air volute 9 can be discharged to the outside from the exhaust air outlet 902.

[0163] In this embodiment, the second motor 5 is located at the end of the main body 1000 in the length direction, and the axial direction of the second motor 5 is arranged along the length direction of the main body 1000. The second motor 5 is the common power source for the fresh air module and the exhaust air module of the two-way ventilation component. To ensure the operation of the fresh air module and the exhaust air module, the second motor 5 needs to have sufficient operating power to drive a sufficient amount of air flow. Based on the power requirement of the second motor 5, the second motor 5 needs to be of a sufficiently large size.

[0164] In this embodiment, on the premise that the dimensional parameters of the second motor 5 are generally determined, when arranging the fresh air module and the exhaust air module at this time, what is considered is how to utilize the space where the second motor 5 is located and occupy as little additional space as possible. Among them, in this embodiment, both the fresh air fan 6 and the exhaust air fan 7 adopt centrifugal fans, and the fresh air fan 6 and the exhaust air fan 7 are connected to the same motor, which not only saves the number of motors, but also keeps the two centrifugal fans arranged in layers along the axial direction of the second motor 5, that is, the two centrifugal fans are arranged in layers along the length direction of the main body 1000.

[0165] In this embodiment, the centrifugal fan itself is relatively flat in the axial direction. Laying the fresh air fan 6 and the exhaust air fan 7 in this way can reduce the overall occupied axial dimension and make the length of the main body 1000 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 the fresh air fan 6 and the exhaust air fan 7 rotate synchronously and are in step with each other, there is no need to have too large a gap between them, and the axial distance between the fresh air fan 6 and the exhaust air fan 7 can be arranged relatively close.

[0166] It should be noted that when referring to "axial direction", "radial direction", and "circumferential direction" when describing the internal structure of the two-way ventilation component, they are all based on the axial direction, radial direction, and circumferential direction of the motor, that is, the direction parallel to the extension direction of the output shaft 532 of the second motor 5 is the axial direction, the direction perpendicular to the extension direction of the output shaft 532 is the radial direction, and the direction around the output shaft 532 is the circumferential direction.

[0167] In the above solution, by using an outer-rotor motor for the second motor 5, the exhaust fan 7 is sleeved on the radial outer side of the motor housing 5311. A part of the second motor 5 in the motor housing 5311 is embedded in the exhaust fan 7, and a part of the output shaft 532 is embedded in the fresh air fan 6, so that in the length direction of the main body 1000, the second motor 5 almost overlaps with the exhaust fan 7 and the fresh air fan 6, and the parts of the exhaust fan 7 and the fresh air fan 6 located outside the second motor 5 axially are less, making the overall axial dimension of the two-way ventilation component close to the axial dimension of the second motor 5, so that the length dimension of the main body 1000 can be controlled.

[0168] Among them, the main body part of the second motor 5 is located in the exhaust fan 7, rather than in the fresh air fan 6, which can leave more air flow space for the fresh air duct V01 and is beneficial to the intake of fresh air. It can be understood that when the wall-mounted air conditioner 10000 is in the cooling state, the fresh air module sucks fresh air from the outside to the inside, and the cooling capacity generated by the wall-mounted air conditioner 10000 can still remain indoors with little cooling capacity loss.

[0169] In this embodiment, the indoor air is discharged outdoors through the exhaust module. By setting the exhaust air volume to be less than the fresh air volume, the cooling capacity loss can be reduced. Therefore, the second motor 5 occupies the space of the exhaust duct V02, leaving more fresh air ducts V01, which is beneficial to ensuring a larger fresh air volume.

[0170] Moreover, precisely because the second motor 5 uses an outer-rotor motor that can adapt to scenarios such as low-speed high torque and direct drive, a speed reducer does not need to be set, and the exhaust fan 7 can be directly sleeved on the radial outer side of the motor housing 5311. This not only avoids the speed reducer increasing the overall axial dimension but also avoids the speed reducer increasing the difficulty of structural layout. Just fixedly connecting the exhaust fan 7 to the motor housing 5311 and connecting the fresh air fan 6 to the output shaft 532 of the second motor 5 can make the exhaust fan 7 and the fresh air fan 6 arranged coaxially and stacked, rotate synchronously, and maintain a small gap without requiring too large a gap. In this way, it also ensures that the overall axial dimension of the two-way ventilation component is close to the axial dimension of the second motor 5, and the length dimension of the main body 1000 can be controlled.

[0171] In this embodiment, a fixed bracket 92 is provided at the exhaust air inlet 901 to install the second motor 5. A first guide portion 923 is provided at one end of the bracket enclosure 922 of the fixed bracket 92 facing the exhaust fan 7. When the indoor air containing dust enters the exhaust air duct V02 from the exhaust air inlet 901 driven by the exhaust fan 7, the first guide portion 923 can guide the dust-containing air to flow in a direction deviating from the bracket enclosure 922, so that the dust is away from the installation cavity 9201 defined by the bracket enclosure 922, thereby keeping the dust away from the second motor 5, especially away from the stator portion 51 and the rotor portion 52 of the second motor 5, preventing dust from entering the gap between the stator portion 51 and the rotor portion 52, thereby reducing the probability of the second motor 5 burning or getting stuck, improving the reliability of the second motor 5, and further improving the reliability of the wall-mounted air conditioner 10000.

[0172] In this embodiment, the fresh air fan 6 is arranged on the side of the exhaust fan 7 facing the indoor heat exchanger 2, which can reduce the indoor cold or heat loss and improve the comfort when the fresh air is blown into the room. Specifically, the fresh air module where the fresh air fan 6 is located is close to the indoor heat exchanger 2, and the fresh air sucked from the outside can absorb the cold or heat released by the indoor heat exchanger 2 before blowing into the room, so that the fresh air is as close to the indoor temperature as possible before blowing into the room.

[0173] In this way, when the wall-mounted air conditioner 10000 is cooling, the fresh air absorbs the coldness of the indoor heat exchanger 2, and the temperature of the fresh air blown in is reduced, so as to avoid blowing the outdoor hot air directly into the room. When the wall-mounted air conditioner 10000 is heating, the fresh air absorbs the heat of the indoor heat exchanger 2, and the temperature of the fresh air blown in is increased, so as to avoid blowing the outdoor cold air directly into the room. The exhaust module where the exhaust fan 7 is located is far from the indoor heat exchanger 2, and the coldness or heat absorbed from the indoor heat exchanger 2 after absorbing air from the room is small, and the coldness or heat loss discharged to the outside is small.

[0174] In this embodiment, the fresh air fan 6 is arranged on the side of the exhaust fan 7 facing the indoor heat exchanger 2, and when the indoor heat exchanger 2 is cooled, the condensed water can also be reduced from entering the air duct. Specifically, the exhaust volute 9 of the exhaust module, its exhaust air inlet 901 takes in air from the room, and the exhaust fan 7 takes in air along the axial direction, so the exhaust air inlet 901 is located on the side of the exhaust volute 9 away from the indoor heat exchanger 2. When there is condensed water on one side of the indoor heat exchanger 2, the condensed water is not easily sucked into the exhaust duct V02 by the exhaust module, reducing the risk of water accumulation and bacterial growth in the exhaust duct V02. When the fresh air module rotates, the fresh air fan 6 takes in air from the outside, and at this time, the condensed water on the indoor heat exchanger 2 will not be sucked into the fresh air duct V01, reducing the risk of water accumulation and bacterial growth in the fresh air duct V01.

[0175] In addition, in this embodiment, the exhaust fan 7 is located on the side of the fresh air fan 6 away from the indoor heat exchanger 2. For the exhaust fan 7 that needs to intake air from the indoor area, the intake air energy consumption it needs is relatively low. Specifically, when the wall-mounted air conditioner 10000 is in the cooling or heating mode, the heat exchange fan 41 operates to drive the indoor intake air to flow through the indoor heat exchanger 2. The exhaust fan 7 is located at the end of the main body 1000. The intake end of the exhaust fan 7 is relatively far from the intake end of the heat exchange fan 41. The exhaust fan 7 does not need to suck air from the intake end of the heat exchange fan 41, so the intake air energy consumption of the exhaust fan 7 can be reduced. In this way, sufficient exhaust air volume can be ensured, and sufficient indoor air can also be ensured to flow through the indoor heat exchanger 2 to obtain sufficient heat exchange air, so that the overall energy consumption of the wall-mounted air conditioner 10000 will not be too high.

[0176] In this embodiment, the fresh air module and the exhaust air module are effectively integrated, enabling the two modules to reasonably utilize their respective structural and spatial characteristics to complete the flat design. This not only reduces the overall size and weight of the two-way ventilation component, making the two-way ventilation component as a whole light and compact, and the air ducts do not interfere with each other. The two-way ventilation component is arranged at one end in the length direction of the main body 1000. Compared with the main body 1000 without the two-way heat exchange component, only the lateral length is increased, and the height and thickness of the main body 1000 can generally remain unchanged or change slightly, making the main body 1000 thin and light in appearance. When hung on the wall, it will not affect the indoor space layout due to being too obtrusive, nor will it be difficult to fix the wall-mounted air conditioner 10000 due to being too heavy, reducing the risk of falling off the wall. The wall-mounted air conditioner 10000 as a whole is still a thin and light model. When hung on the wall, it is not only beautiful but also has controllable weight and safe to use.

[0177] In some embodiments, please refer to Figure 9 , on the side of the exhaust wheel disc 71 facing the fixed bracket 92, there is a second flow guiding portion 75. The second flow guiding portion 75 includes a first extension section 751 and a second extension section 752. The first extension section 751 extends along the axial direction of the exhaust wheel disc 71, and the second extension section 752 extends along the radial direction of the exhaust wheel disc 71. The first extension section 751 and the second extension section 752 are arc-transitionally connected through an arc extension section 753.

[0178] The second flow guiding portion 75 can guide the indoor air containing dust in the exhaust air duct V02 to flow radially outward, making the dust gradually move away from the installation cavity 9201 defined by the fixed bracket 92 and the second motor 5, further preventing dust from entering the gap between the stator portion 51 and the rotor portion 52 of the second motor 5, thereby further reducing the probability of the second motor 5 burning out or getting stuck.

[0179] Since the fixed bracket 92 is provided on the exhaust volute 9 and it is a fixed component, while the exhaust fan 7 is a rotating component, to avoid interference between the exhaust fan 7 and the fixed bracket 92, a gap should be left between the exhaust fan 7 and the fixed bracket 92. Refer toFigure 9 In the solution of the present application, there is a first gap 9202 in the radial direction of the exhaust air wheel disc 71 between the first air guiding portion 923 on the fixed bracket 92 and the first extension section 751 of the exhaust air wheel disc 71.

[0180] If the size of the first gap 9202 is too large, the air containing dust can easily enter the first gap 9202, and thus enter the installation cavity 9201 of the fixed bracket 92 and the gap between the stator portion 51 and the rotor portion 52; if the size of the first gap 9202 is too small, when the fixed bracket 92 or the exhaust air fan 7 shakes slightly in the radial direction, there may be a risk of interference between the first air guiding portion 923 and the first extension section 751, making it difficult to ensure that the exhaust air fan 7 can rotate normally.

[0181] Therefore, in the solution of the present application, the size of the first gap 9202 is L1, where 1 mm ≤ L1 ≤ 5 mm. For example, the size L1 of the first gap 9202 can be 1 mm, 3 mm, 5 mm, etc. Limiting the size L1 of the first gap 9202 within the above range can, on the one hand, reduce the interference between the exhaust air fan 7 and the first air guiding portion 923 on the fixed bracket 92 and ensure that the exhaust air fan 7 can rotate normally, and on the other hand, create a pressure difference on both sides of the first gap 9202 to prevent the air containing dust from entering the installation cavity 9201 defined by the fixed bracket 92 and the gap between the stator portion 51 and the rotor portion 52, thereby further reducing the probability of the second motor 5 burning out or getting stuck.

[0182] In some embodiments, referring to Figure 9 , the first air guiding portion 923 and the first extension section 751 at least partially overlap along the axial direction of the exhaust air fan 7. With this setting, a labyrinth gap can be formed between the first air guiding portion 923 and the second air guiding portion 75, thereby increasing the resistance of dust entering the installation cavity 9201 defined by the fixed bracket 92 and the gap between the stator portion 51 and the rotor portion 52, reducing the probability of the second motor 5 burning out or getting stuck, improving the service reliability of the second motor 5, and further improving the service reliability of the wall-mounted air conditioner 10000.

[0183] Referring to Figures 9 - 11 , in some embodiments, the first air guiding portion 923 includes a first air guiding ring 9231 and a second air guiding ring 9232. The first air guiding ring 9231 is radially offset outward relative to the bracket side plate 922, and the second air guiding ring 9232 is connected between the bracket side plate 922 and the first air guiding ring 9231. There is a first gap 9202 in the radial direction of the exhaust air wheel disc 71 between the first air guiding ring 9231 and the first extension section 751.

[0184] With such a configuration, the outer diameter of the first guide ring 9231 can be larger than the outer diameter of the bracket enclosure 922, and a step surface is formed between the outer peripheral wall of the first guide ring 9231 and the outer peripheral wall of the second guide ring 9232, so that the first guide portion 923 can better block and guide the air, thereby guiding the dust-containing air to flow in a direction away from the bracket enclosure 922, thereby keeping the dust away from the second motor 5 and preventing the dust from entering the gap between the stator portion 51 and the rotor portion 52, thereby reducing the probability of the second motor 5 burning or getting stuck.

[0185] Among them, the axial size of the gap between the second guide ring 9232 and the exhaust wheel disc 71 is 1mm-5mm. For example, the axial size of the gap between the second guide ring 9232 and the exhaust wheel disc 71 can be 1mm, 3mm, 5mm, etc.

[0186] Such a configuration can increase the resistance of dust entering the installation cavity 9201 defined by the fixed bracket 92 and the gap between the stator part 51 and the rotor part 52, reduce the probability of the second motor 5 burning or getting stuck, improve the reliability of the second motor 5, and further improve the reliability of the wall-mounted air conditioner 10000.

[0187] In some embodiments, reference Figure 9 The motor housing 5311 has an opening at one end facing away from the fresh air fan 6 , and the portion of the rotor portion 52 extending out of the motor housing 5311 from the opening and the first air guide portion 923 are arranged opposite to each other in the radial direction of the rotor portion 52 .

[0188] The rotor part 52 is extended from the opening of the motor housing 5311 to form a step portion between the rotor part 52 and the motor housing 5311, so that the gap between the rotor part 52 and the circuit board 54, the gap between the rotor part 52 and the first air guide part 923, and the gap between the first air guide part 923 and the second air guide part 75 are combined to form a maze-like gap, thereby increasing the resistance of dust entering the installation cavity 9201 defined by the fixed bracket 92 and the gap between the stator part 51 and the rotor part 52, reducing the probability of the second motor 5 burning or getting stuck, and improving the reliability of the second motor 5, thereby improving the reliability of the wall-mounted air conditioner 10000.

[0189] In some embodiments, reference Figure 8 and Figure 9 The second motor 5 also includes: a circuit board 54, the circuit board 54 is arranged in the installation cavity 9201, the circuit board 54 and the exhaust fan 7 are arranged opposite to each other in the axial direction of the exhaust fan 7, and the stator part 51 and the rotor part 52 are arranged between the circuit board 54 and the exhaust wheel 71.

[0190] Among them, the plane where one end of the first air guiding part 923 faces the second air guiding part 75 extends beyond the side surface of the circuit board 54 facing the stator part 51 and the rotor part 52. That is to say, one end of the first air guiding part 923 facing the second air guiding part 75 extends beyond the circuit board 54.

[0191] With such a setting, the circuit board 54 can be completely accommodated in the installation cavity 9201, so that the gap between the circuit board 54 and the rotor part 52 can be far from one end of the first air guiding part 923 facing the second air guiding part 75, thereby further preventing the air containing dust from entering the gap between the circuit board 54 and the rotor part 52, and then preventing dust from entering the gap between the stator part 51 and the rotor part 52, reducing the probability of the second motor 5 burning out or jamming.

[0192] In some embodiments, referring to Figure 9 , the distance L2 between the plane where one end of the first air guiding part 923 faces the second air guiding part 75 and the side surface of the circuit board 54 facing the stator part 51 and the rotor part 52 is 0.5 mm - 5 mm. For example, L2 can be 0.5 mm, 2 mm, 4 mm, 5 mm, etc.

[0193] According to the positional relationship among the circuit board 54, the stator part 51, the rotor part 52, the exhaust fan 7 and the first air guiding part 923 on the support enclosure 922, it can be known that:

[0194] If the distance L2 between the plane where one end of the first air guiding part 923 faces the second air guiding part 75 and the side surface of the circuit board 54 facing the stator part 51 and the rotor part 52 is too small, the gap between the rotor part 52 and the circuit board 54 will be closer to the first air guiding part 923, so that the air containing dust is more likely to enter the gap between the rotor part 52 and the circuit board 54, and then enter the gap between the rotor part 52 and the stator part 51, resulting in the second motor 5 burning out or jamming.

[0195] If the distance L2 between the plane where one end of the first air guiding part 923 faces the second air guiding part 75 and the side surface of the circuit board 54 facing the stator part 51 and the rotor part 52 is too large, if the positions of the exhaust fan 7 and the rotor part 52 remain unchanged, it will inevitably lead to an increase in the axial gap between the circuit board 54 and the rotor part 52, thereby increasing the probability of dust entering the stator part 51 and the rotor part 52, resulting in the second motor 5 burning out or jamming. If the exhaust fan 7 and the rotor part 52 are moved into the installation cavity 9201, it will lead to the exhaust fan 7 being closer to the first air guiding part 923, thereby increasing the probability of interference between the exhaust fan 7 and the first air guiding part 923.

[0196] Therefore, in the solution of the present application, by restricting the distance L2 between the plane where one end of the first air guide portion 923 faces the second air guide portion 75 and the side surface of the circuit board 54 facing the stator portion 51 and the rotor portion 52 to satisfy the above range, on the one hand, the interference between the exhaust fan 7 and the first air guide portion 923, and between the rotor portion 52 and the circuit board 54 can be reduced, ensuring that the exhaust fan 7 and the rotor portion 52 can operate normally. On the other hand, the air containing dust can be prevented from entering the gap between the rotor portion 52 and the circuit board 54, and thus entering the gap between the stator portion 51 and the rotor portion 52, which can further reduce the probability of the second motor 5 burning out or getting stuck.

[0197] In some embodiments, referring to Figure 9 , there is a second gap 540 between the circuit board 54 and the rotor portion 52 in the axial direction of the rotor portion 52. If the size of the second gap 540 is too large, the air containing dust can easily enter the gap between the stator portion 51 and the rotor portion 52 through the second gap 540. If the size of the second gap 540 is too small, when the rotor portion 52 shakes slightly in the axial direction, there may be a risk of interference between the rotor portion 52 and the circuit board 54, resulting in the rotor portion 52 getting stuck.

[0198] Therefore, in the solution of the present application, the size L3 of the second gap 540 is 0.5 mm - 2 mm. For example, the size L3 of the second gap 540 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, etc. Restricting the size L3 of the second gap 540 within the above range can, on the one hand, reduce the interference between the circuit board 54 and the rotor portion 52, ensuring that the rotor portion 52 can operate normally. On the other hand, it can increase the air flow resistance, preventing the air containing dust from entering the gap between the stator portion 51 and the rotor portion 52 through the second gap 540, thereby further reducing the probability of the second motor 5 burning out or getting stuck.

[0199] In some embodiments, referring to Figure 8 and Figure 9 、 Figure 14 , a receiving groove V07 is formed at the center of the exhaust fan 7 in the radial direction, and at least a part of the stator portion 51 of the second motor 5, at least a part of the rotor portion 52, and at least a part of the motor housing 5311 are received in the receiving groove V07.

[0200] Specifically, the hub of the exhaust fan 7 forms the receiving groove V07. At this time, the main body part of the second motor 5 (i.e., the stator portion 51 and the rotor portion 52) and the motor housing 5311 can be placed at the center of the exhaust fan 7, which will not hinder the exhaust air flow, and can make full use of the hub space of the exhaust fan 7 to reduce the external occupied space of the second motor 5.

[0201] Moreover, the hub of the exhaust fan 7 has a protective effect after being arranged on the outside of the second motor 5, and can also make the center of mass of the exhaust fan 7 as close to the center of the rotor part 52 as possible, so that the bending moment generated by the exhaust fan 7 on the second motor 5 is small, the exhaust fan 7 shakes less when rotating, and the exhaust fan 7 runs stably with low energy consumption.

[0202] In some embodiments, reference Figure 15 The fresh air fan 6 includes a fresh air wheel disc 61 and a fresh air blade 62 . The fresh air blade 62 is located at the outer edge of the fresh air wheel disc 61 , and the fresh air blade 62 extends along the axial direction of the fresh air wheel disc 61 .

[0203] Reference Figure 14 and Figure 15 The total thickness of the fresh air wheel 61 and the fresh air blade 62 in the axial direction is h1, and the total thickness of the exhaust air wheel 71 and the exhaust air blade 72 in the axial direction is h2; wherein, h1 <h2。

[0204] This arrangement ensures that the fresh air volume is greater than the exhaust air volume while making the main part of the fresh air fan 6 have a larger axial thickness, thereby increasing the structural strength and being able to bear a larger torque. The exhaust fan 7 requires less air volume, and the smaller axial thickness of the main part can appropriately reduce the exhaust air volume and reduce the axial size of the two-way ventilation component.

[0205] In the present application, in order to make the wall-mounted air conditioner 10000 safer and more reliable, the external dimensions of the main body 1000 are strictly controlled. In this way, not only the gap between the internal parts is 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 thinner.

[0206] When controlling the size of the main body 1000, how to reduce the structural size of the two-way ventilation assembly is the key. The first thing to be ensured in the two-way ventilation assembly is that the second motor 5 can output enough power to meet the requirements of exhaust air volume and fresh air volume. Therefore, the thickness of the second motor 5, especially the total thickness h3 of the stator part 51, the rotor part 52 and the motor housing 5311 in the axial direction, is crucial.

[0207] In some embodiments, reference Figure 13 and Figure 14 The total thickness of the exhaust wheel 71 and the exhaust blades 72 in the axial direction is h2, and the total thickness of the stator part 51, the rotor part 52 and the motor housing 5311 in the axial direction is h3; wherein, h3>h2.

[0208] It can be understood that the second motor 5 needs to drive the fresh air fan 6 and the exhaust fan 7 simultaneously. Although the exhaust air volume is designed to be relatively small, the fresh air volume is designed to be relatively large. Therefore, the total thickness of the stator portion 51, the rotor portion 52 and the motor housing 5311 in the axial direction is set to be greater than the axial thickness of the main body portion of the exhaust fan 7, so as to ensure that the second motor 5 can support the rotation of the two fans and improve the sufficient supporting force of the second motor 5.

[0209] In some embodiments, referring to Figure 15 , the fresh air fan 6 includes 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.

[0210] Referring to Figure 13 and Figure 15 , the total thickness of the fresh air wheel disc 61 and the fresh air blades 62 in the axial direction is h1, and the total thickness of the stator portion 51, the rotor portion 52 and the motor housing 5311 in the axial direction is h3, where h1 > h3. This also ensures that the fresh air volume is relatively large, and the second motor 5 does not need to occupy too much duct space.

[0211] In some embodiments, please refer to Figure 8 and Figure 9 again, the exhaust blades 72 are located at the edge of the exhaust wheel disc 71, and the exhaust blades 72 extend along the axial direction of the exhaust wheel disc 71 in a direction away from the fresh air fan 6.

[0212] After the second motor 5 occupies a certain thickness dimension, in order to avoid the structural dimensions of the two-way ventilation component from further expanding, when optimizing the exhaust fan 7, a convex portion 74 is provided on the exhaust wheel disc 71. The convex portion 74 extends in a direction towards the fresh air fan 6 relative to the exhaust wheel disc 71, so that a receiving groove V07 for the second motor 5 is formed on the side of the convex portion 74 close to the second motor 5, and at least a part of the stator portion 51 and at least a part of the rotor portion 52 are accommodated in the receiving groove V07.

[0213] Furthermore, a recessed portion 813 can be formed in the central portion region of the first volute end plate 811 of the first volute 81, which faces towards the fresh air fan 6, so that at least a part of the convex portion 74 is located in the recessed portion 813.

[0214] With such a setting, it is also beneficial to reduce the distance between the main body portion of the second motor 5 and the fresh air fan 6, thereby being beneficial to reducing the axial distance between the fresh air fan 6 and the main body portion of the second motor 5, reducing the bending moment generated by the fresh air fan 6 on the output shaft 532. When the second motor 5 moves, the coaxiality of the fresh air fan 6 and the exhaust fan 7 is relatively high, and it is not easy to shake, and it can avoid abrasion and vibration caused by friction with the volute.

[0215] Please refer to Figure 8 andFigure 9 The fresh air volute 8 includes: a first volute 81, the first volute 81 is located on the side of the exhaust volute 9 facing the heat exchange fan 41, and the first volute 81 is detachably connected to the exhaust volute 9.

[0216] The fresh air volute 8 further includes: a second volute 82, the second volute 82 is located on the side of the first volute 81 facing the heat exchange fan 41, and the second volute 82 is detachably connected to the first volute 81, and the first volute 81 is located between the exhaust volute 9 and the second volute 82.

[0217] Please refer to again Figure 8 and Figure 9 The first volute 81 includes a first volute end plate 811 and a first volute shroud 812, and the first volute shroud 812 extends along the edge of the first volute end plate 811 in the direction facing the heat exchange fan 41.

[0218] Wherein, a central partial area of the first volute end plate 811 forms a recess 813 facing into the fresh air fan 6, and a perforation 814 is provided at the center of the recess 813. At least a part of the protrusion 74 is located in the recess 813, and the output shaft 532 is connected to the fresh air fan 6 through the perforation 814.

[0219] In this application, the fresh air volute 8 is axially divided into at least the first volute 81 and the second volute 82 for separate processing, which can reduce the manufacturing and assembly difficulties. Moreover, for such a complex housing, separate manufacturing facilitates quality control. The detachable connection between the first volute 81 and the exhaust volute 9, and the detachable connection between the second volute 82 and the first volute 81 are convenient for assembly and also for subsequent adjustment and maintenance.

[0220] A protrusion 74 is provided at the center of the exhaust wheel disc 71, and a recess 813 is formed at the center of the first volute end plate 811. On the one hand, the hub of the exhaust fan 7 is used to form the protrusion 74 to accommodate the second motor 5, and the 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 protrusion 74, occupying more of the exhaust air duct V02 and less of the fresh air duct V01, which is matched with 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 with sealing, reduces the chance of mutual flow between fresh air and exhaust air, and reduces air flow disturbance.

[0221] Refer to Figure 14 and Figure 15 In some embodiments, the area of the outer circular surface of the fresh air fan 6 is S1, and the area of the outer circular surface of the exhaust fan 7 is S2, satisfying S1 > S2.

[0222] Refer to Figure 15, S1 = ΠD1*h1, where D1 is the outer diameter of the fresh air fan 6, and h1 is the total axial thickness of the fresh air wheel disc 61 and the fresh air blades 62 of the fresh air fan 6.

[0223] The outer diameter D1 of the fresh air fan 6 refers to the diameter dimension at the farthest point from the axis of the fresh air fan 6. The fresh air fan 6 includes: 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. The total axial thickness of the fresh air wheel disc 61 and the fresh air blades 62 is h1.

[0224] Here, the fresh air wheel disc 61 on the fresh air fan 6 can be one, or at least two axially spaced apart. On each side of the axial direction of each fresh air wheel disc 61, only one circle of fresh air blades 62 can be provided on one side, or one circle of fresh air blades 62 can be provided on each side. When all the fresh air wheel discs 61 and fresh air blades 62 are projected vertically onto the axis of the fresh air fan 6, the distance between the two farthest points in the projection is equal to h1.

[0225] Refer to Figure 14 , S2 = ΠD2*h2, where D2 is the outer diameter of the exhaust fan 7, and h2 is the total axial thickness of the exhaust wheel disc 71 and the exhaust blades 72 of the exhaust fan 7.

[0226] The outer diameter D2 of the exhaust fan 7 refers to the diameter dimension at the farthest point from the axis of the exhaust fan 7. The exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are located at the outer edge of the exhaust wheel disc 71, and the exhaust blades 72 extend along the axial direction of the exhaust wheel disc 71. The total axial thickness of the exhaust wheel disc 71 and the exhaust blades 72 is h2.

[0227] Here, the exhaust wheel disc 71 on the exhaust fan 7 can be one, or at least two axially spaced apart. On each side of the axial direction of each exhaust wheel disc 71, only one circle of exhaust blades 72 can be provided on one side, or one circle of exhaust blades 72 can be provided on each side. When all the exhaust wheel discs 71 and exhaust blades 72 are projected vertically onto the axis of the exhaust fan 7, the distance between the two farthest points in the projection is equal to h2.

[0228] With such a setting, the outer circular surface area of the fresh air fan 6 is large, and the outer circular surface area of the exhaust fan 7 is small, which is beneficial to achieving a large fresh air volume under the condition of limited overall machine space size.

[0229] Optionally, according to the structural and functional requirements designed in this application, the outer diameter D1 of the fresh air fan 6 is greater than the outer diameter D2 of the exhaust fan 7, which is beneficial to making the area swept by the blades of the fresh air fan 6 when rotating larger than the area swept by the blades of the exhaust fan 7 when rotating. In this way, the fresh air volume is greater than the exhaust air volume, meeting the design requirements of the wall-mounted air conditioner 10000. That is, air is inhaled from the infinite outdoor space and sent indoors. Compared with sucking air from the relatively enclosed indoor space and discharging it outdoors, the energy consumption is lower. Moreover, the air freshness in the outdoor environment is high, and sucking air from the outdoor and blowing it into the indoor is more conducive to supplementing fresh air in the indoor space, supplementing the oxygen content and reducing the carbon dioxide content in the indoor air.

[0230] Moreover, by setting the outer diameter D2 of the exhaust fan 7 to be smaller than the outer diameter D1 of the fresh air fan 6, it is easy to arrange the exhaust air outlet 902 of the exhaust air duct V02 and the fresh air outlet 802 of the fresh air duct V01 to be misaligned on the outer periphery of the two-way ventilation component. On the one hand, it is convenient to connect the exhaust air extraction pipe 142 to the exhaust air outlet 902 and the fresh air introduction pipe 141 to the fresh air outlet 802. On the other hand, it is easy to ensure that the flow paths of the fresh air and the exhaust air in the two-way ventilation component do not cross.

[0231] Correspondingly, the outer diameter of the exhaust air volute 9 is smaller than the outer diameter of the fresh air volute 8. In this way, it is easy to arrange the exhaust air outlet 902 of the exhaust air duct V02 and the fresh air outlet 802 of the fresh air duct V01 to be misaligned on the outer periphery of the two-way ventilation component, facilitating the connection of the exhaust air extraction pipe 142 to the exhaust air outlet 902 and the fresh air introduction pipe 141 to the fresh air outlet 802, and avoiding interference caused by the too-close distance between the two pipe joints, which is not only convenient for assembly but also for sealing.

[0232] In addition, by setting the outer diameter of the exhaust air volute 9 to be relatively small, more space can be vacated on the outer side in the radial direction of the exhaust air volute 9, enabling air to flow in the space inside the casing 1 on the outer side of the exhaust air volute 9 in the radial direction. In this way, when the exhaust air volute 9 sucks air from the exhaust air inlet 901, more air can enter, which is beneficial to increasing the exhaust air intake volume.

[0233] In some embodiments, as Figure 16 shown, an indoor exhaust air outlet 903 for communicating with the indoor is formed on the exhaust air volute 9. When the exhaust fan 7 rotates, the indoor air entering the exhaust air volute 9 can be discharged to the indoor from the indoor exhaust air outlet 903. That is to say, the exhaust air module can also be set for the internal circulation of indoor air to promote the circulation and flow of indoor air without sending the indoor air outdoors.

[0234] In some embodiments, referring to Figures 8 - 9 、 Figure 15, the fresh air fan 6 includes: a fresh air impeller 61 and fresh air blades 62. The fresh air impeller 61 is coaxially arranged with the second motor 5, and the fresh air impeller 61 is connected to the output shaft 532 of the second motor 5. The fresh air blades 62 include first fresh air blades 62162, and the first fresh air blades 62162 extend from the fresh air impeller 61 in a direction away from the exhaust fan 7. The blade cylinder formed after the first fresh air blades 62162 are arranged circumferentially is open towards the axial air inlet end, facilitating air intake, reducing the air intake resistance, and ensuring the fresh air intake volume.

[0235] Specifically, referring to Figure 9 and Figure 15 , the fresh air blades 62 further include second fresh air blades 62262, and the second fresh air blades 62262 extend from the fresh air impeller 61 in a direction close to the exhaust fan 7. In this way, the fresh air fan 6 includes double-layer centrifugal blades. Thus, in the case of meeting the large air volume requirement, the double-layer centrifugal blade structure design helps to increase the overall structural strength of the centrifugal fan.

[0236] Furthermore, in the axial direction of the fresh air fan 6, the length h12 of the second fresh air blades 62262 is less than the length h11 of the first fresh air blades 62162. Here, the first fresh air blades 62162 face the axial air inlet end. Therefore, a larger axial length of the first fresh air blades 62162 is beneficial for obtaining a larger fresh air intake volume by using the first fresh air blades 62162. And by using shorter second fresh air blades 62262, the fresh air intake is supplemented. Moreover, the first fresh air blades 62162 on the windward side are longer, which is beneficial for reducing noise while ensuring the fresh air volume.

[0237] Even further, referring to Figure 16 , the fresh air impeller 61 is formed with a wheel disc hole 612, and the wheel disc hole 612 is used for one side of the second fresh air blades 62262 to suck in air through the wheel disc hole 612. The distance from the wheel disc hole 612 to the center of the fresh air impeller 61 is less than the distance from the fresh air blades 62 to the center of the fresh air impeller 61.

[0238] That is to say, the wheel disc hole 612 is closer to the center of the fresh air impeller 61 relative to the fresh air blades 62. This is beneficial for the second fresh air blades 62262 to guide the air flow to be sucked in axially into the space where the second fresh air blades 62262 are located when sucking air from the wheel disc hole 612, and reducing the turbulent flow generated by competing for air with the first fresh air blades 62162.

[0239] In some embodiments, referring to Figures 8 - 9 , Figures 17 - 19, the second volute 82 includes: a second volute half 821, which 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 to the first volute 81. The second volute half 821 is provided with an axial ventilation port 8211 at the center in the radial direction. 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 ventilation port 8211. The second volute half 821 and the first volute 81 enclose a fresh air outlet 802.

[0240] The second volute 82 further includes: a fan cover 822, which 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 to the second volute half 821. The cavity enclosed by the fan cover 822 and the second volute half 821 is a fresh air cavity V012, and the fan cover 822 and the second volute half 821 enclose a fresh air inlet 801.

[0241] After being arranged like this, a fresh air cavity V012 is formed at the air inlet end of the fresh air fan 6. The formed fresh air cavity V012 can cover the axial air inlet end of the fresh air fan 6, and the fresh air cavity V012 can be used to accommodate air, so that the air can enter the fresh air fan 6 vertically along the axis from the fresh air cavity V012, thereby improving the air suction efficiency of the fresh air fan 6 and reducing the air suction loss.

[0242] Among them, 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 can be separated from the indoor heat exchanger 2. When the indoor heat exchanger 2 cools down, the indoor heat exchanger 2 can absorb the heat in the fresh air cavity V012, gradually reducing the fresh air temperature. And due to the separation of the fan cover 822, the indoor heat exchanger 2 is far from the volute cavity V011, and the cooling capacity of the indoor heat exchanger 2 to the air in the volute cavity V011 decreases, and the air in the volute cavity V011 is not easily supercooled to generate condensate.

[0243] In this way, even if the inhaled fresh air is cooled down, it will not be supercooled to generate condensate. And even if condensate is generated in the fresh air cavity V012, the condensate is likely to stay in the fresh air cavity V012 and is not easily introduced into the volute cavity V011 and then blown into the room, avoiding the situation of water blowing in the fresh air module. When the indoor heat exchanger 2 heats up, the indoor heat exchanger 2 can absorb the cold in the fresh air cavity V012, gradually increasing the fresh air temperature. Subsequently, the heated air enters the volute cavity V011 and is fully mixed, making the hot air blown out from the fresh air module milder.

[0244] In some embodiments, refer to Figure 17 and Figure 18, the wall-mounted air conditioner 10000 further includes: a purification component 11, which is installed in the fresh air cavity V012, so that the fresh air blown into the room is purified, improving the cleanliness of the indoor air.

[0245] Specifically, the purification component 11 is installed in the fresh air cavity V012, that is to say, the purification component 11 is located at the axial air inlet end of the fresh air fan 6. When the fresh air fan 6 rotates, outdoor air can 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 purification component 11 and then enter the room from the fresh air outlet 802.

[0246] In this way, the fresh air flow can almost vertically pass through the purification component 11, further reducing the fresh air intake consumption, thereby increasing the fresh air volume. Moreover, when the indoor heat exchanger 2 is in the cooling state and condensed water is generated in the fresh air, the condensed water can remain on the purification component 11 when the air flows through the purification component 11, further avoiding the situation of water blowing when the fresh air module discharges air.

[0247] Furthermore, the purification component 11 is connected to the second volute 82, which facilitates the assembly of the purification component 11 and prevents interference with the fresh air fan 6.

[0248] Optionally, the purification component 11 includes a filter net 111, and the filter net 111 covers the axial ventilation opening 8211. The filter net 111 covers the entire air inlet end of the fresh air fan 6, with a large covering area, a large filtering area, and good filtering effect. The setting of the filter net 111 helps to ensure sufficient contact area with the flowing air, and it is light in weight and has low air passing noise. Optionally, the filter net 111 is a HEPA net, so it has a strong adsorption force and a strong filtering effect on dust in the air.

[0249] Optionally, the filter net 111 is plate-shaped, so that the overall filter net 111 is relatively thin and will not occupy too much thickness when placed in the two-way ventilation component.

[0250] Optionally, the filter net 111 is square, which facilitates the positioning and installation of the filter net 111.

[0251] Furthermore, the filter net 111 is a square net, and the side length of the filter net 111 is greater than the diameter of the axial ventilation opening 8211. The square net is convenient for positioning during fixation, is not easy to shake after fixation, and is easy to process with less processing waste. Making the side length of the filter net 111 greater than the diameter of the axial ventilation opening 8211 enables all the fresh air flow entering the axial ventilation opening 8211 to flow through the filter net 111, with high filtering cleanliness.

[0252] In some embodiments, a part of the fresh air cavity V012 forms an empty cavity V0121, and the cavity V0121 is located on the side of the purification component 11 away from the fresh air fan 6, and the fresh air inlet 801 communicates with the cavity V0121.

[0253] That is to say, a purification component 11 is arranged at a position in the fresh air cavity V012 close to the fresh air fan 6, and a cavity V0121 is formed in the part of the fresh air cavity V012 away from the fresh air fan 6, that is, the cavity V0121 is formed between the oncoming air of the purification component 11 and the inner surface of the fan cover 822. In this way, when the fresh air fan 6 operates, the cavity V0121 is in a negative pressure state, enabling the air flow to automatically flow into the cavity V0121 from the fresh air inlet 801, reducing the air flow resistance.

[0254] The cavity V0121 is equivalent to the air inlet negative pressure cavity of the fresh air fan 6, and the setting of the air inlet negative pressure cavity has many advantages:

[0255] First, improve the air inlet efficiency. Specifically, by setting the negative pressure cavity, the buffer space on the air suction side of the fresh air fan 6 is increased, making it easier for the fresh air fan 6 to suck air, thereby increasing the air inlet volume of the fresh air fan 6. Moreover, due to the existence of the negative pressure cavity, the fresh air is buffered and adjusted in the negative pressure cavity before entering the fresh air fan 6, reducing the fluctuation and turbulence of the fresh air flow, which is beneficial to improving the air inlet stability of the fresh air fan 6. If there is no cavity V0121, without the buffer space, the flow resistance increases, and the operating power consumption of the fresh air fan 6 will rise.

[0256] Second, optimize the air flow distribution. Specifically, through the buffering and guiding of the negative pressure cavity, it is beneficial to guide the air flow to be sucked into the fresh air fan 6 along the axial direction.

[0257] Third, reduce the air flow impact and absorb noise.

[0258] In this way, while increasing the air inlet volume of the fresh air module, it is beneficial to the overall air inlet reliability and stability.

[0259] In some embodiments, a positioning convex bulge 8221 is formed on the side of the fan cover 822 facing the indoor heat exchanger 2. The base 3 has an end plate 31 at one end adjacent to the fan cover 822, and the end plate 31 is used to install the indoor heat exchanger 2 and the heat exchange fan 41. A positioning recess 311 is formed on the end plate 31, and the positioning convex bulge 8221 and the positioning recess 311 are inserted and matched with each other, so that the fan cover 822 and the base 3 overlap at least partially in the transverse direction.

[0260] In this way, on the one hand, the positioning convex bulge 8221 and the positioning recess 311 are inserted and matched with each other to form the positioning of the two-way ventilation component, and on the other hand, the overall transverse dimension can be reduced, so that the wall-mounted air conditioner 10000 will not be too long.

[0261] In some embodiments, an installation opening 803 is also defined between the fan cover 822 and the second volute half 821, and the purification component 11 is detachably assembled in the fresh air cavity V012 through the installation opening 803. This facilitates the disassembly of the purification component 11 when the purification component 11 is damaged or saturated, facilitating maintenance or replacement.

[0262] Specifically, as Figure 18 shown, the installation opening 803 is formed between the fan housing 822 and the second volute half body 821. The purification member 11 is detachably assembled in the fresh air chamber V012 through the installation opening 803. In this way, the size of the installation opening 803 can be set larger, facilitating the installation of a purification member 11 with a larger size. When the size of the installation opening 803 is large, the installation opening 803 is formed by enclosing between the fan housing 822 and the second volute half body 821. The fan housing 822 and the second volute half body 821 respectively form open half-ports, which are convenient for processing or demolding, and the forming rejection rate is low.

[0263] In some embodiments, referring to Figure 8 and Figure 9 , the exhaust volute 9 includes a wind guiding ring 91. The wind guiding ring 91 is in the shape of a circular tube, and the diameter of the wind guiding ring 91 gradually decreases in the direction towards the heat exchange fan 41. The area surrounded by the wind guiding ring 91 forms an exhaust air inlet 901. The setting of the wind guiding ring 91 can effectively collect the scattered air flow, converge it into a relatively concentrated air flow and send it into the exhaust fan 7, making the air intake smoother and more efficient, and improving the air intake volume of the exhaust fan 7.

[0264] Moreover, after the shape and angle of the wind guiding ring 91 are reasonably designed, the air flow can enter the exhaust blades 72 of the exhaust fan 7 at the best angle, improving the working efficiency of the exhaust fan 7. When unstable air flow fluctuations are inhaled, the wind guiding ring 91 can play a role in stabilizing the air flow, reducing the turbulence and fluctuations of the air flow, enabling the exhaust fan 7 to operate more smoothly. It can reduce noise and vibration and extend the service life of the exhaust fan 7.

[0265] Referring to Figures 8 - 9 , Figure 14 , the edge of the exhaust blade 72 far from the exhaust wheel disc 71 is the blade side edge 721. The distance between the part of the blade side edge 721 close to the second motor 5 and the exhaust wheel disc 71 decreases, and all the exhaust blades 72 form a side edge depression 73 at the place where the distance of the blade side edge 721 decreases. The end of the wind guiding ring 91 is located in the side edge depression 73.

[0266] That is to say, the exhaust blades 72 of the exhaust fan 7 are concave blades, and both the wind guiding ring 91 and the concave blades are concave towards the fresh air fan 6. The wind guiding ring 91 partially enters the side edge depression 73 formed by the concave blades. With such a setting, the wind guiding ring 91 and the exhaust fan 7 can have partial overlap in the axial direction, and without increasing the axial dimension of the exhaust volute 9 on the premise of setting the wind guiding ring 91.

[0267] In some embodiments, at least one of the fresh air fan 6 and the exhaust fan 7 includes: a wheel disc and blades connected to the wheel disc, and a transition fillet structure is provided at the connection between the blades and the wheel disc.

[0268] For example, specifically, the exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are connected to one side of the exhaust wheel disc 71 away from the heat exchange fan 41. There are multiple exhaust blades 72, and the multiple exhaust blades 72 are arranged circumferentially. A transition fillet structure is provided at the connection between the exhaust blades 72 and the exhaust wheel disc 71. This can reduce the concentrated stress at the connection between the exhaust blades 72 and the exhaust wheel disc 71 and improve the overall strength. Additionally, when the air flow flows axially towards the exhaust wheel disc 71, the air flow can be guided by the transition fillet structure under the drive of the pressure difference, and there is less turbulence when the air flow turns, which is beneficial to reducing energy consumption.

[0269] Again, for example, specifically, the fresh air fan 6 includes a fresh air wheel disc 61 and fresh air blades 62. The fresh air blades 62 are connected to the fresh air wheel disc 61. There are multiple fresh air blades 62, and the multiple fresh air blades 62 are arranged circumferentially. A transition fillet structure is provided at the connection between the fresh air blades 62 and the fresh air wheel disc 61. This can reduce the concentrated stress at the connection between the fresh air blades 62 and the fresh air wheel disc 61 and improve the overall strength. Additionally, when the air flow flows axially towards the fresh air wheel disc 61, the air flow can be guided by the transition fillet structure under the drive of the pressure difference and flow more smoothly towards the fresh air blades 62, which is beneficial to reducing energy consumption.

[0270] In some embodiments, the accommodation cavity V1 in the main body 1000 is partitioned into a first chamber V11 and a second chamber V12, as Figure 2 shown by the dashed line frame in the figure. The indoor heat exchanger 2 is located in the first chamber V11, and at least part of the two-way ventilation component is arranged in the second chamber V12. The heat exchange air inlet 101 and the heat exchange air outlet 102 on the housing 1 are correspondingly arranged for the first chamber V11, and the housing air inlet 103 and the housing air outlet 105 on the housing 1 are correspondingly arranged for the second chamber V12.

[0271] With this arrangement, the accommodation cavity V1 is partitioned into the first chamber V11 and the second chamber V12. The air flow inside the second chamber V12 will not be affected by the drive of the heat exchange fan 41. The exhaust air inlet 901 can directly intake air from the second chamber V12, and there is no need to connect pipes between the housing air inlet 103 and the exhaust air inlet 901. This not only reduces the space occupied by the pipe body, but also the position of the housing air inlet 103 can be flexibly selected.

[0272] In the solution of the present application, a vertically arranged partition plate can be provided in the housing 1 to separate the first chamber V11 and the second chamber V12, or the first chamber V11 and the second chamber V12 can be separated by the fresh air volute 8 or the base 3, or the cooperation of the two.

[0273] For example, as Figure 4In some of the specific embodiments shown, the indoor heat exchanger 2 and the heat exchange fan 41 are installed on the base 3. End plates 31 are provided at both lateral ends of the base 3. Both ends of the indoor heat exchanger 2 are installed on the two end plates 31, and both ends of the heat exchange fan 41 are installed on the two end plates 31.

[0274] Optionally, the end plate 31 adjacent to the fresh air volute 8 is set as a solid plate. Through the cooperation of the end plate 31 and the inner wall of the casing 1, the accommodation cavity V1 is divided into a first chamber V11 and a second chamber V12. Such a setting can save the setting of the spacer plate. At this time, the two-way ventilation assembly can be installed on the adjacent end plate 31. Or optionally, as Figure 4 shown, the blower housing 822 forms a positioning convex hull 8221 on the side facing the indoor heat exchanger 2. The base 3 has an end plate 31 at one end adjacent to the blower housing 822. The positioning convex hull 8221 and the positioning recess 311 are inserted and fitted with each other, so that the blower housing 822 blocks the positioning recess 311 after being fitted with the adjacent end plate 31, thereby dividing the accommodation cavity V1 into a first chamber V11 and a second chamber V12.

[0275] In some embodiments, referring to Figures 1 - 3 , the casing air inlet 103 is located on the top wall of the main body 1000. Since the wall-mounted air conditioner 10000 is hung high on the wall, the casing air inlet 103 located on the top wall of the main body 1000 is not easily visible to people's sight, so that the appearance of the main body 1000 can be kept beautiful. A first continuous ventilation duct V04 is formed between the casing air inlet 103 and the exhaust air inlet 901. The exhaust fan 77 rotates to drive the indoor air to enter the first continuous ventilation duct V04 from the casing air inlet 103, and the indoor air enters the exhaust volute 9 through the exhaust air inlet 901.

[0276] In some embodiments, the wall-mounted air conditioner 10000 further includes an electric control box 13. The electric control box 13 is located at one lateral end of the heat exchange fan 41, and the two-way ventilation assembly is located at the other lateral end of the heat exchange fan 41. That is to say, the two-way ventilation assembly and the electric control box 13 are located at the two lateral ends of the heat exchange fan 41, and the operation of the two-way ventilation assembly has little interference with the electric control box 13.

[0277] In some other embodiments, the wall-mounted air conditioner 10000 further includes an electric control box 13. The electric control box 13 and the two-way ventilation assembly are located at the same lateral end of the heat exchange fan 41, and the electric control box 13 is located on top of the two-way ventilation assembly. Such a setting further facilitates controlling the length of the wall-mounted air conditioner 10000.

[0278] In some embodiments, as Figure 19As shown, a fresh air volute 8 is formed with a purified air inlet 804 for communicating with the interior of the room. When the fresh air fan 6 rotates, indoor air can enter the fresh air volute 8 from the purified air inlet 804 to be purified by the purification member 11, and the indoor air entering the fresh air volute 8 can enter the room from the fresh air outlet 802. In this way, indoor air can enter the fresh air duct V01 from the purified air inlet 804, be purified, and then enter the room from the fresh air outlet 802.

[0279] The wall-mounted air conditioner 10000 according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0280] Refer to Figure 1 and Figure 2 The wall-mounted air conditioner 10000 according to an embodiment of the present invention includes: a main body 1000.

[0281] The main body 1000 includes: a housing 1. An accommodation cavity V1 is formed inside the housing 1. A heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the housing 1. In the height direction of the main body 1000, the heat exchange air inlet 101 is located above the heat exchange air outlet 102.

[0282] Refer to Figure 3 and Figure 4 The main body 1000 further includes: an indoor heat exchanger 2. The indoor heat exchanger 2 is disposed in the accommodation cavity V1.

[0283] Refer to Figure 3 and Figure 4 The main body 1000 further includes: a base 3. The base 3 is disposed in the accommodation cavity V1 and has a scroll tongue air duct V03 formed thereon.

[0284] Refer to Figure 4 The main body 1000 further includes: a heat exchange fan 41. The heat exchange fan 41 is disposed in the scroll tongue air duct V03 and is located on the side of the indoor heat exchanger 2 away from the heat exchange air inlet 101.

[0285] Refer to Figure 4 The main body 1000 further includes: a first motor 42. The first motor 42 is disposed in the accommodation cavity V1 and is located at one end in the length direction of the main body 1000 for driving the heat exchange fan 41 to rotate so that air can perform heat exchange between the interior of the air conditioner and the indoor space.

[0286] Refer to Figure 3 and Figure 4 The wall-mounted air conditioner 10000 further includes: a second motor 5. The second motor 5 is disposed in the accommodation cavity V1 and the second motor 5 is located at the other end in the length direction of the main body 1000.

[0287] Refer to Figure 8 and Figure 9As shown, the second motor 5 is an outer rotor motor. The second motor 5 includes a stator portion 51 and a rotor portion 52. The stator portion 51 has coils wound thereon. In the radial direction of the stator portion 51, the rotor portion 52 is disposed around the outside of the stator portion 51.

[0288] Referring to Figures 8 - 9 、 Figures 12 - 13 , the second motor 5 further includes a motor housing 5311 and an output shaft 532. The motor housing 5311 is fixedly connected to the rotor portion 52, and the output shaft 532 is fixedly connected to the motor housing 5311.

[0289] Referring to Figure 8 , the wall-mounted air conditioner 10000 further includes: a fresh air fan 6. The fresh air fan 6 is a centrifugal fan with axial air intake and radial air outlet. The centrifugal fan is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 5311, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0290] Referring to Figure 8 and Figure 9 , the wall-mounted air conditioner 10000 further includes: an exhaust fan 7. The exhaust fan 7 is a centrifugal fan with axial air intake and radial air outlet. In the length direction of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is sleeved on the radial outside of the motor housing 5311, and the exhaust fan 7 is fixedly connected to the motor housing 5311.

[0291] The exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust wheel disc 71 is sleeved on the radial outside of the motor housing 5311 of the second motor 5, and the exhaust wheel disc 71 is connected to the motor housing 5311 of the second motor 5. The exhaust blades 72 are connected to the side of the exhaust wheel disc 71 away from the heat exchange fan 41. The exhaust blades 72 are multiple, and the multiple exhaust blades 72 are arranged circumferentially.

[0292] Wherein, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously in the working state.

[0293] Referring to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: a fresh air volute 8. A fresh air duct V01 is formed inside the fresh air volute 8. The fresh air fan 6 is installed inside the fresh air volute 8. A fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8. Rotation of the fresh air fan 6 can cause outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and can cause the outdoor air entering the fresh air volute 8 to enter the room from the fresh air outlet 802.

[0294] Referring to Figures 5 - 8, the wall-mounted air conditioner 10000 further includes: an exhaust volute 9, located on a side of the fresh air volute 8 facing the second motor 5. An exhaust air duct V02 is formed inside the exhaust volute 9. The exhaust fan 7 is installed inside the exhaust volute 9. An exhaust air inlet 901 and an exhaust air outlet 902 are formed on the exhaust volute 9. When the exhaust fan 7 rotates, indoor air can enter the exhaust volute 9 from the exhaust air inlet 901, and the indoor air entering the exhaust volute 9 can be discharged to the outside from the exhaust air outlet 902.

[0295] Refer to Figure 8 and Figure 9 , the wall-mounted air conditioner 10000 further includes: a fixing bracket 92, located at the exhaust air inlet 901, and the fixing bracket 92 is connected to the exhaust volute 9. The stator part 51 is arranged on the fixing bracket 92.

[0296] Refer to Figures 9 - 11 , the fixing bracket 92 includes a bracket end plate 92131 and a bracket surrounding plate 922. The bracket surrounding plate 922 extends along the edge of the bracket end plate 92131 towards the direction of the exhaust fan 7 and is connected to the exhaust volute 9. An installation cavity 9201 is defined between the bracket surrounding plate 922 and the bracket end plate 92131. At least a part of the stator part 51 is accommodated in the installation cavity 9201.

[0297] One end of the bracket surrounding plate 922 away from the bracket end plate 92131 has a first flow guiding part 923. The first flow guiding part 923 includes a first flow guiding ring 9231 and a second flow guiding ring 9232. The first flow guiding ring 9231 is radially offset outward relative to the bracket surrounding plate 922. The second flow guiding ring 9232 is connected between the bracket surrounding plate 922 and the first flow guiding ring 9231.

[0298] One side of the exhaust wheel disc 71 facing the fixing bracket 92 has an arc-shaped second flow guiding part 75. There is a first gap 9202 between the second flow guiding part 75 and the first flow guiding ring 9231 in the radial direction of the exhaust wheel disc 71.

[0299] In the above solution, by providing a fixing bracket 92 at the air exhaust inlet 901, it can be used to install the second motor 5. A first guiding portion 923 is provided at one end of the bracket enclosure 922 of the fixing bracket 92 facing the exhaust fan 7. When the indoor air containing dust enters the exhaust air duct V02 from the air exhaust inlet 901 driven by the exhaust fan 7, the first guiding portion 923 can guide the air containing dust to flow in a direction deviating from the bracket enclosure 922, so that the dust is away from the installation cavity 9201 defined by the bracket enclosure 922, thereby keeping the dust away from the second motor 5, especially away from the stator portion 51 and the rotor portion 52 of the second motor, preventing the dust from entering the gap between the stator portion 51 and the rotor portion 52, thus reducing the probability of the second motor 5 being burned out or stuck, improving the reliability of use of the second motor 5, and further improving the reliability of use of the wall-mounted air conditioner 10000.

[0300] In the description of this specification, the descriptions with reference to the terms "embodiment", "example", etc. mean 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 the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0301] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner, comprising: A subject, the subject comprising: A casing, wherein a receiving cavity is formed inside the casing, a heat exchange air inlet and a heat exchange air outlet are formed on the casing, and in the height direction of the main body, the heat exchange air inlet is located above the heat exchange air outlet; An indoor heat exchanger is arranged in the accommodating cavity; A base, disposed in the accommodating cavity, and having a snail-tongue air duct formed thereon; A heat exchange fan is arranged in the volute-tongue air duct and is located on a side of the indoor heat exchanger away from the heat exchange air inlet; A first motor is disposed in the accommodating cavity and located at one end of the main body in the length direction, and is used to drive the heat exchange fan to rotate so that the air inside the air conditioner performs heat exchange with the indoor space; It is characterized by further comprising: The second motor is disposed in the accommodating cavity and is located at the other end of the length direction of the main body. The second motor is an outer rotor motor. The second motor includes: A stator part, wherein a coil is wound on the stator part; a rotor portion, which is arranged around the outer side of the stator portion in the radial direction of the stator portion; A motor housing, wherein the motor housing is fixedly connected to the rotor portion; An output shaft, the output shaft is fixedly connected to the motor housing; A fresh air fan, wherein the fresh air fan is a centrifugal fan with axial air intake and radial air discharge, the centrifugal fan is located on a side of the heat exchange fan away from the first motor, the fresh air fan is located between the heat exchange fan and the motor housing, and the fresh air fan is connected to the output shaft of the second motor; An exhaust fan, wherein the exhaust fan is a centrifugal fan with axial air intake and radial air discharge, and in the length direction of the main body, the exhaust fan is located on the side of the fresh air fan facing the second motor, and the exhaust fan is sleeved on the radial outer side of the motor housing, and the exhaust fan is fixedly connected to the motor housing; The exhaust fan comprises an exhaust wheel disc and exhaust blades, the exhaust wheel disc is sleeved on the radial outer side of the motor housing of the second motor, and the exhaust wheel disc is connected to the motor housing of the second motor, the exhaust blades are connected to the side of the exhaust wheel disc away from the heat exchange fan, the exhaust blades are multiple, and the multiple exhaust blades are arranged along the circumferential direction; Wherein, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in a working state; A fresh air volute, a fresh air duct is formed in the fresh air volute, the fresh air fan is installed in the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; The rotation of the fresh air fan can allow outdoor air to enter the fresh air volute from the fresh air inlet, and can allow outdoor air entering the fresh air volute to enter the room from the fresh air outlet; An exhaust volute is located on a side of the fresh air volute facing the second motor, an exhaust air duct is formed in the exhaust volute, the exhaust fan is installed in the exhaust volute, and an exhaust air inlet and an exhaust air outlet are formed on the exhaust volute; The exhaust fan rotates to allow indoor air to enter the exhaust volute from the exhaust air inlet, and to allow indoor air entering the exhaust volute to be discharged to the outdoors from the exhaust air outlet; A fixed bracket, the fixed bracket is located at the exhaust air inlet, the fixed bracket is connected to the exhaust volute, and the stator part is arranged on the fixed bracket; The fixed bracket includes a bracket end plate and a bracket enclosure, the bracket enclosure is formed along the edge of the bracket end plate and extends toward the exhaust fan, and the bracket enclosure is connected to the exhaust volute, and an installation cavity is defined between the bracket enclosure and the bracket end plate, and at least a portion of the stator part is accommodated in the installation cavity; The end of the support enclosure away from the support end plate has a first guide portion, and at least a portion of the first guide portion has an outer diameter greater than the outer diameter of the support enclosure.

2. The wall-mounted air conditioner according to claim 1, characterized in that: The exhaust wheel disc has a second guide portion on the side facing the fixed bracket, and the second guide portion includes a first extension section and a second extension section, the first extension section extends along the axial direction of the exhaust wheel disc, and the second extension section extends along the radial direction of the exhaust wheel disc, and the first extension section and the second extension section are connected by an arc transition of the arc extension section.

3. The wall-mounted air conditioner according to claim 2, characterized in that: A first gap is provided between the first air guide portion and the first extension section in the radial direction of the exhaust wheel disc, and a size of the first gap is L1, 1mm≤L1≤5mm.

4. The wall-mounted air conditioner according to claim 2, characterized in that: The first air guide portion and the first extension section at least partially overlap along the axial direction of the exhaust fan.

5. The wall-mounted air conditioner according to claim 2, characterized in that: The first guide portion includes a first guide ring and a second guide ring. The first guide ring is radially offset outward relative to the bracket enclosure, the second guide ring is connected between the bracket enclosure and the first guide ring, and a first gap is provided between the first guide ring and the first extension section in the radial direction of the exhaust wheel.

6. The wall-mounted air conditioner according to claim 1, characterized in that: An end of the motor housing facing away from the fresh air fan has an opening, and a portion of the rotor portion extending out of the motor housing from the opening and the first air guide portion are arranged opposite to each other in a radial direction of the rotor portion.

7. The wall-mounted air conditioner according to claim 2, characterized in that: The second motor also includes: A circuit board, the circuit board is arranged in the installation cavity, and the circuit board and the exhaust fan are arranged opposite to each other in the axial direction of the exhaust fan, and the stator part and the rotor part are arranged between the circuit board and the exhaust wheel disc; Wherein, a plane where one end of the first air guide portion facing the second air guide portion is located exceeds a side surface of the circuit board facing the stator portion and the rotor portion.

8. The wall-mounted air conditioner according to claim 7, characterized in that: A distance L2 between a plane where one end of the first air guide portion facing the second air guide portion is located and a surface of one side of the circuit board facing the stator portion and the rotor portion is 0.5 mm-5 mm.

9. The wall-mounted air conditioner according to claim 7, characterized in that: A second gap is provided between the circuit board and the rotor part in the axial direction of the rotor part, and a size L3 of the second gap is 0.5 mm-2 mm.

10. The wall-mounted air conditioner according to claim 1, characterized in that: The exhaust fan forms a receiving groove at the center in the radial direction, and at least a portion of the stator part of the second motor, at least a portion of the rotor part, and at least a portion of the motor housing are accommodated in the receiving groove.

11. The wall-mounted air conditioner according to any one of claims 1 to 10, characterized in that: The fresh air fan comprises a fresh air disc and fresh air blades, wherein the fresh air blades are located at the outer edge of the fresh air disc and extend along the axial direction of the fresh air disc, and the total thickness of the fresh air disc and the fresh air blades in the axial direction is h1; The total thickness of the exhaust wheel and the exhaust blades in the axial direction is h2; Among them, h1 <h2。 12. The wall-mounted air conditioner according to any one of claims 1 to 10, characterized in that: The total thickness of the exhaust wheel and the exhaust blades in the axial direction is h2; The total thickness of the stator part, the rotor part and the motor housing in the axial direction is h3; Among them, h3>h2.

13. The wall-mounted air conditioner according to any one of claims 1 to 10, characterized in that: The fresh air fan comprises a fresh air disc and fresh air blades, wherein the fresh air blades are located at the outer edge of the fresh air disc and extend along the axial direction of the fresh air disc, and the total thickness of the fresh air disc and the fresh air blades in the axial direction is h1; The total thickness of the stator part, the rotor part and the motor housing in the axial direction is h3. Among them, h1>h3.

14. The wall-mounted air conditioner according to claim 1, characterized in that: The exhaust blades are located at the edge of the exhaust wheel disc, and the exhaust blades extend along the axial direction of the exhaust wheel disc in a direction away from the fresh air fan; Wherein, the exhaust fan further comprises a protrusion, the protrusion is arranged on the exhaust wheel, and the protrusion extends in a direction relative to the exhaust fan toward the fresh air fan, so that a side of the protrusion close to the second motor forms a receiving groove for the second motor; At least a portion of the stator part and at least a portion of the rotor part are accommodated in the accommodating groove.

15. The wall-mounted air conditioner according to claim 14, characterized in that: The fresh air volute comprises: a first volute, the first volute being located on a side of the exhaust volute facing the heat exchange fan, and the first volute being detachably connected to the exhaust volute; The second volute is located on a side of the first volute facing the heat exchange fan, and the second volute is detachably connected to the first volute, and the first volute is located between the exhaust volute and the second volute.

16. The wall-mounted air conditioner according to claim 15, characterized in that: The first volute comprises a first volute end plate and a first volute enclosure plate, wherein the first volute enclosure plate is formed by extending along the edge of the first volute end plate toward the heat exchange fan; Wherein, a central part area of ​​the first volute end plate forms a recessed portion facing the fresh air fan, and at least a part of the raised portion is located in the recessed portion.

17. The wall-mounted air conditioner according to claim 16, characterized in that: A perforated portion is provided at the center of the recessed portion, and the output shaft is connected to the fresh air fan through the perforated portion.

18. The wall-mounted air conditioner according to claim 1, characterized in that: The area of ​​the outer circular curved surface of the fresh air fan is S1, and the area of ​​the outer circular curved surface of the exhaust fan is S2. S1=ΠD1*h1, D1 is the outer diameter of the fresh air fan, and h1 is the total thickness of the fresh air impeller and fresh air blades of the fresh air fan in the axial direction; S2=ΠD2*h2, D2 is the outer diameter of the exhaust fan, h2 is the total thickness of the exhaust wheel and exhaust blades of the exhaust fan in the axial direction; Satisfies, S1>S2.

19. The wall-mounted air conditioner according to claim 1, characterized in that: The fresh air fan comprises: A fresh air wheel, the fresh air wheel is coaxially arranged with the second motor and connected to the output shaft of the second motor; The fresh air blades include a first fresh air blade, and the first fresh air blade is extended from the fresh air wheel toward a direction away from the exhaust fan.

20. The wall-mounted air conditioner according to claim 19, characterized in that: The fresh air blade also includes a second fresh air blade, which extends from the fresh air wheel toward the exhaust fan.

21. The wall-mounted air conditioner according to claim 20, characterized in that: In the axial direction of the fresh air fan, the length of the second fresh air blade is smaller than the length of the first fresh air blade.

22. The wall-mounted air conditioner according to claim 20, characterized in that: A wheel hole is formed on the fresh air wheel, and a distance from the wheel hole to the center of the fresh air wheel is smaller than a distance from the fresh air blade to the center of the fresh air wheel.

23. The wall-mounted air conditioner according to claim 15, characterized in that: The second volute comprises: A second volute half, the second volute half is located on the side of the first volute facing the heat exchange fan, and the second volute half is detachably connected to the first volute, an axial vent is provided at the center of the radial direction of the second volute half, a volute cavity is formed between the second volute half and the first volute, the fresh air fan is located in the volute cavity, the axial air inlet end of the fresh air fan is arranged toward the axial vent, and the second volute half and the first volute surround the fresh air outlet.

24. The wall-mounted air conditioner according to claim 23, characterized in that: The second volute comprises: A fan cover, wherein the fan cover is located on the side of the second volute half facing the heat exchange fan, and the fan cover is detachably connected to the second volute half, the cavity enclosed by the fan cover and the second volute half is a fresh air cavity, and the fan cover and the second volute half enclose the fresh air inlet.

25. The wall-mounted air conditioner according to claim 24, characterized in that: Also includes: A purification component, the purification component is installed in the fresh air cavity, the purification component is connected to the second volute, the fresh air fan rotates to allow outdoor air to enter the fresh air volute from the fresh air inlet, and the outdoor air entering the fresh air volute is blown through the purification component and then enters the room from the fresh air outlet; The purification component comprises a filter screen, and the filter screen is covered on the axial ventilation opening.

26. The wall-mounted air conditioner according to claim 25, characterized in that: A portion of the fresh air cavity constitutes an empty cavity, the cavity is located on a side of the purification component away from the fresh air fan, and the fresh air inlet is connected to the cavity.

27. The wall-mounted air conditioner according to claim 24, characterized in that: The fan cover forms a positioning convex hump on a side facing the indoor heat exchanger; The base has an end plate at one end adjacent to the fan cover, and the end plate is used to install the indoor heat exchanger and the heat exchange fan; A positioning recess is formed on the end plate, and the positioning protrusion and the positioning recess are plugged and matched with each other so that the fan guard and the base are at least partially overlapped in the transverse direction.

28. The wall-mounted air conditioner according to claim 1, characterized in that: The exhaust volute includes an air guide ring, which is in a circular tube shape and has a diameter that gradually decreases in a direction toward the heat exchange fan. The area surrounded by the air guide ring forms the exhaust air inlet.

29. The wall-mounted air conditioner according to claim 28, characterized in that: The edge of the exhaust blade away from the exhaust wheel disc is a blade side edge, the distance between the portion of the blade side edge close to the second motor and the exhaust wheel disc is reduced, and all the exhaust blades form side edge depressions at the portion where the distance between the blade side edges is reduced; The end of the air guide ring is located in the side edge recess.

30. A wall-mounted air conditioner, comprising: A subject, the subject comprising: A casing, wherein a receiving cavity is formed inside the casing, a heat exchange air inlet and a heat exchange air outlet are formed on the casing, and in the height direction of the main body, the heat exchange air inlet is located above the heat exchange air outlet; An indoor heat exchanger is arranged in the accommodating cavity; A base, disposed in the accommodating cavity, and having a snail-tongue air duct formed thereon; A heat exchange fan is arranged in the volute-tongue air duct and is located on a side of the indoor heat exchanger away from the heat exchange air inlet; A first motor is disposed in the accommodating cavity and located at one end of the main body in the length direction, and is used to drive the heat exchange fan to rotate so that the air inside the air conditioner performs heat exchange with the indoor space; It is characterized by further comprising: The second motor is disposed in the accommodating cavity and is located at the other end of the length direction of the main body. The second motor is an outer rotor motor. The second motor includes: A stator part, wherein a coil is wound on the stator part; a rotor portion, which is arranged around the outer side of the stator portion in the radial direction of the stator portion; A motor housing, wherein the motor housing is fixedly connected to the rotor portion; An output shaft, the output shaft is fixedly connected to the motor housing; A fresh air fan, wherein the fresh air fan is a centrifugal fan with axial air intake and radial air discharge, the centrifugal fan is located on a side of the heat exchange fan away from the first motor, the fresh air fan is located between the heat exchange fan and the motor housing, and the fresh air fan is connected to the output shaft of the second motor; An exhaust fan, wherein the exhaust fan is a centrifugal fan with axial air intake and radial air discharge, and in the length direction of the main body, the exhaust fan is located on the side of the fresh air fan facing the second motor, and the exhaust fan is sleeved on the radial outer side of the motor housing, and the exhaust fan is fixedly connected to the motor housing; The exhaust fan comprises: an exhaust wheel disc and exhaust blades, the exhaust wheel disc is sleeved on the radial outer side of the motor housing of the second motor, and the exhaust wheel disc is connected to the motor housing of the second motor, the exhaust blades are connected to the side of the exhaust wheel disc away from the heat exchange fan, the exhaust blades are multiple, and the multiple exhaust blades are arranged along the circumferential direction; Wherein, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in a working state; A fresh air volute, a fresh air duct is formed in the fresh air volute, the fresh air fan is installed in the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; The rotation of the fresh air fan can allow outdoor air to enter the fresh air volute from the fresh air inlet, and can allow outdoor air entering the fresh air volute to enter the room from the fresh air outlet; An exhaust volute is located on a side of the fresh air volute facing the second motor, an exhaust air duct is formed in the exhaust volute, the exhaust fan is installed in the exhaust volute, and an exhaust air inlet and an exhaust air outlet are formed on the exhaust volute; The exhaust fan rotates to allow indoor air to enter the exhaust volute from the exhaust air inlet, and to allow indoor air entering the exhaust volute to be discharged to the outdoors from the exhaust air outlet; A fixed bracket, the fixed bracket is located at the exhaust air inlet, the fixed bracket is connected to the exhaust volute, and the stator part is arranged on the fixed bracket; The fixed bracket includes a bracket end plate and a bracket enclosure, the bracket enclosure is formed along the edge of the bracket end plate and extends toward the exhaust fan, and the bracket enclosure is connected to the exhaust volute, and an installation cavity is defined between the bracket enclosure and the bracket end plate, and at least a portion of the stator part is accommodated in the installation cavity; The support enclosure has a first guide portion at one end away from the support end plate, and the first guide portion includes a first guide ring and a second guide ring. The first guide ring is radially offset outward relative to the support enclosure, and the second guide ring is connected between the support enclosure and the first guide ring.

31. The wall-mounted air conditioner according to claim 30, characterized in that: The exhaust wheel disc has an arc-shaped second air guide portion on one side facing the fixed bracket, and the second air guide portion and the first air guide ring have a first gap in the radial direction of the exhaust wheel disc.

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