Wall-mounted air conditioner

Abstract

A wall-mounted air conditioner (10000), comprising a main body (1000). The main body (1000) comprises a casing (1), an indoor heat exchanger (2), a base (3), a heat exchange fan (41), and a first motor (42) connected to the heat exchange fan (41). The wall-mounted air conditioner (10000) further comprises a second motor (5), a fresh air fan (6), an exhaust fan (7), a fresh air volute (8), and an exhaust volute (9). The first motor (42) and the second motor (5) are located at two ends of the main body (1000) in the direction of length thereof. The second motor (5) is an external rotor motor and is connected to the fresh air fan (6) and the exhaust fan (7) to rotate synchronously. The fresh air fan (6) and the exhaust fan (7) are both centrifugal fans with axial air intake and radial air output, the fresh air fan (6) is located on the side of the heat exchange fan (41) away from the first motor (42), the exhaust fan (7) is located on the side of the fresh air fan (6) facing the second motor (5), and the exhaust fan (7) is sleeved on the radial outer side of a motor casing (53). In the direction of height of the main body (1000), a fresh air inlet (801) is located below the main body (1000), and an exhaust air outlet (902) is located below the main body (1000). The wall-mounted air conditioner (10000) can be kept lightweight and thin and has improved reliability, while achieving air exhaust and air suction.

Description

Wall-mounted air conditioner

[0001] This application claims priority to Chinese patent applications filed on August 30, 2024, with application numbers 202422139744.3, 202422139705.3, 202422141947.6, 202422139809.4, 202422141771.4, and 202411220811.2, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of air conditioner technology, specifically to a wall-mounted air conditioner. Background Technology

[0003] With the advancement of technology and the improvement of people's living standards, air conditioners have gradually entered people's lives and become an indispensable item in people's work and life.

[0004] An air conditioner consists of an indoor unit and an outdoor unit, which are installed indoors and outdoors respectively, and connected by corresponding pipes and wires. Typically, to improve indoor air quality, air conditioners also have a fresh air intake system and an exhaust system for ventilation.

[0005] Summary of the Invention

[0006] This disclosure aims to at least address one of the technical problems existing in the related art. To this end, some embodiments of this disclosure propose a wall-mounted air conditioner that can improve the cleanliness of the intake fresh air while simultaneously exhausting and drawing air into the room.

[0007] A wall-mounted air conditioner according to an embodiment of this disclosure includes: a main body. The main body includes: a casing, the interior of which forms a cavity, and a heat exchange air inlet and a heat exchange air outlet formed on the casing, wherein the heat exchange air inlet is located above the heat exchange air outlet in the height direction of the main body; an indoor heat exchanger disposed within the cavity; a base disposed within the cavity, on which a volute air duct is formed; a heat exchange fan disposed within the volute air duct and located on the side of the indoor heat exchanger away from the heat exchange air inlet; and a first motor disposed within the 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 with the indoor space inside the air conditioner.

[0008] The wall-mounted air conditioner further includes: a second motor, disposed within the accommodating cavity, and located at the other end of the length direction of the main body; the second motor is an external rotor motor, comprising: a stator portion having wound coils; a rotor portion arranged radially around the outside of the stator portion; a motor housing fixedly connected to the rotor portion; and an output shaft fixedly connected to the motor housing and extending along the axial direction of the motor housing toward one side of the heat exchange fan.

[0009] The wall-mounted air conditioner further includes: a fresh air fan, which is an axially intake and radially exhaust centrifugal fan, located on the side of the heat exchange fan away from the first motor, between the heat exchange fan and the motor housing, and connected to the output shaft of the second motor; and an exhaust fan, which is an axially intake and radially exhaust centrifugal fan, located on the side of the fresh air fan facing the second motor along the length of the main body, sleeved on the radially outer side of the motor housing, and fixedly connected to the motor housing.

[0010] When the second motor is in operation, it drives the fresh air fan and the exhaust fan to rotate synchronously.

[0011] The wall-mounted air conditioner further includes: a fresh air volute, a fresh air duct formed inside the fresh air volute, a fresh air fan installed inside the fresh air volute, and a fresh air inlet and a fresh air outlet formed on the fresh air volute; the rotation of the fresh air fan allows outdoor air to enter the fresh air volute from the fresh air inlet, and allows outdoor air entering the fresh air volute to enter the room from the fresh air outlet; in the height direction of the main body, the fresh air inlet is located below the main body.

[0012] 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; an exhaust fan is installed inside the exhaust volute; and an exhaust inlet and an exhaust outlet are formed on the exhaust volute. The rotation of the exhaust fan allows indoor air to enter the exhaust volute from the exhaust inlet and allows indoor air entering the exhaust volute to be exhausted to the outside from the exhaust outlet. In the height direction of the main body, the exhaust outlet is located below the main body.

[0013] The wall-mounted air conditioner according to the embodiments of this disclosure can improve the cleanliness of the incoming fresh air while simultaneously exhausting and drawing air into the room.

[0014] By adopting an external rotor motor for the second motor, and with the exhaust fan mounted radially outside the motor housing, the second motor is partially embedded within the exhaust fan and partially embedded within the fresh air fan in the output shaft. This results in the second motor almost overlapping with the exhaust fan and fresh air fan in the length direction of the main body, minimizing the axial portion of the exhaust fan and fresh air fan outside the second motor. Consequently, the overall axial dimension of the bidirectional ventilation assembly is close to that of the second motor, making the length dimension of the main body controllable.

[0015] The main body of the second motor is located inside the exhaust fan, not the fresh air fan. This allows for more airflow space in the fresh air duct, facilitating the intake of fresh air and ensuring that the exhaust air volume is less than the fresh air volume, thus reducing indoor cooling or heating loss. Because the second motor uses an external rotor motor suitable for low-speed, high-torque, and direct-drive applications, a speed reducer is unnecessary. The exhaust fan can be directly mounted radially outside the motor housing. This avoids increasing the overall axial dimension and structural layout complexity associated with a speed reducer. Simply fixing the exhaust fan to the motor housing and connecting the fresh air fan to the output shaft of the second motor allows for a coaxial, stacked arrangement of the exhaust and fresh air fans, enabling them to rotate synchronously with minimal clearance.

[0016] Placing the fresh air fan on the side of the exhaust fan facing the indoor heat exchanger can reduce the loss of indoor cooling or heating, improving the comfort of fresh air entering the room. For example, if the fresh air volute is close to the indoor heat exchanger, the fresh air drawn in from the outside can absorb the cooling or heating released by the indoor heat exchanger before being blown into the room, thus making the fresh air as close to the indoor temperature as possible before entering the room. If the exhaust volute is farther from the indoor heat exchanger, less cooling or heating is absorbed from the indoor heat exchanger after drawing in air from the room, resulting in less cooling or heating loss when exhausted to the outside.

[0017] Placing the fresh air fan on the side of the exhaust fan facing the indoor heat exchanger reduces the amount of condensate entering the air duct when the indoor heat exchanger is cooling. This reduces the risk of water accumulation and bacterial growth in the exhaust and fresh air ducts, and also reduces the risk of condensate entering the secondary motor and causing damage. Since the exhaust fan is located on the side of the fresh air fan furthest from the indoor heat exchanger, its energy consumption for drawing air from the room is also lower.

[0018] The fresh air intake and exhaust vent are positioned at the bottom of the main unit, contributing to its slim and lightweight design. This slim profile ensures the unit won't obtrusively clutter the wall and disrupt the room's layout, while also preventing excessive weight from hindering secure mounting and reducing the risk of detachment. The overall design remains slim and lightweight, making it aesthetically pleasing and with manageable weight when mounted on the wall.

[0019] In some embodiments, the exhaust fan forms a receiving groove at the radial center, and at least a portion of the stator portion, at least a portion of the rotor portion, and at least a portion of the motor housing of the second motor are received within the receiving groove.

[0020] In some embodiments, the fresh air outlet is located directly in front of the main body.

[0021] In some embodiments, the fresh air outlet is located at the top of the main body.

[0022] In some embodiments, the fresh air outlet is located below the main body to guide fresh air forward and downward into the room.

[0023] In some embodiments, the exhaust air inlet is formed on the exhaust volute, and the axial direction of the exhaust air inlet is arranged along the length direction of the main body.

[0024] In some embodiments, the housing is provided with a housing air inlet at one end where the second motor is located, and the housing air inlet is located at the top of the main body. A first ventilation duct is formed between the housing air inlet and the exhaust air inlet. The exhaust fan rotates and drives indoor air to enter the first ventilation duct through the housing air inlet, and causes indoor air to enter the exhaust volute through the exhaust air inlet.

[0025] In some embodiments, the housing is provided with a housing air inlet at one end where the second motor is located, and the housing air inlet is located on the side of the main body. The exhaust fan rotates and drives indoor air to enter the interior of the housing through the housing air inlet, and causes indoor air to enter the exhaust volute through the exhaust air inlet.

[0026] In some embodiments, the fresh air fan includes: a fresh air impeller and fresh air blades, the fresh air blades being located at the outer edge of the fresh air impeller and extending along the axial direction of the fresh air impeller, the total axial thickness of the fresh air impeller and the fresh air blades being h1; the exhaust fan includes an exhaust impeller and exhaust blades, the exhaust blades being located at the outer edge of the exhaust impeller and extending along the axial direction of the exhaust impeller, the total axial thickness of the exhaust impeller and the exhaust blades being h2; h2 < h1.

[0027] In some embodiments, the total axial thickness of the stator, the rotor, and the motor housing is h3; the exhaust fan includes an exhaust wheel and exhaust blades, the exhaust blades are located on the outer edge of the exhaust wheel and extend along the axial direction of the exhaust wheel, and the total axial thickness of the exhaust wheel and the exhaust blades is h2; satisfying h3 > h2.

[0028] In some embodiments, the exhaust fan includes an exhaust wheel and exhaust blades, the exhaust blades being located at the outer edge of the exhaust wheel and extending along the axial direction of the exhaust wheel in a direction away from the fresh air fan. The exhaust fan also includes a protrusion on the exhaust wheel, the center of which is located on the axis of the exhaust fan, and the protrusion extending relative to the exhaust wheel in a direction toward the fresh air fan, such that the side of the protrusion near the second motor forms a receiving groove for the second motor. At least a portion of the stator and at least a portion of the rotor are accommodated in the receiving groove.

[0029] The fresh air volute includes: a first volute, which is located on the side of the exhaust volute facing the heat exchange fan and is detachably connected to the exhaust volute; and a second volute, which is located on the side of the first volute facing the heat exchange fan and is detachably connected to the first volute, with the first volute located between the exhaust volute and the second volute.

[0030] The first volute includes a first volute end plate and a first volute perimeter plate. The first volute perimeter plate extends along the edge of the first volute end plate toward the heat exchange fan. A recessed portion facing the fresh air fan is formed in the central part of the first volute end plate. A perforation is provided in the center of the recessed portion. At least a portion of the protrusion is located in the recessed portion. The output shaft is connected to the fresh air fan through the perforation.

[0031] In some embodiments, the total axial thickness of the stator, the rotor, and the motor housing is h3, and the fresh air fan includes a fresh air impeller and fresh air blades. The fresh air blades are located at the outer edge of the fresh air impeller and extend along the axial direction of the fresh air impeller. The total axial thickness of the fresh air impeller and the fresh air blades is h1, where h1 > h3.

[0032] In some embodiments, 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, where D1 is the outer diameter of the fresh air fan and h1 is the total axial thickness of the fresh air impeller and fresh air blades on 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 impeller and exhaust blades on the exhaust fan; satisfying that S1 > S2.

[0033] In some embodiments, the exhaust fan includes: an exhaust wheel, which is coaxially arranged with the second motor and connected to the motor housing of the second motor; and multiple exhaust blades, which are disposed on the exhaust wheel and extend only in a direction away from the fresh air fan, with the multiple exhaust blades arranged circumferentially on the exhaust wheel.

[0034] In some embodiments, the fresh air fan includes: a fresh air impeller, which is coaxially arranged with the second motor and connected to the output shaft of the second motor; and fresh air blades, including a first fresh air blade, which extends from the fresh air impeller toward a direction away from the exhaust fan.

[0035] In some embodiments, the fresh air blade further includes a second fresh air blade extending from the fresh air impeller toward the direction of the exhaust fan.

[0036] In some embodiments, the length of the second fresh air blade is less than the length of the first fresh air blade along the axial direction of the fresh air fan.

[0037] In some embodiments, a disc hole is formed on the fresh air impeller, and the distance from the disc hole to the center of the fresh air impeller is less than the distance from the fresh air blade to the center of the fresh air impeller.

[0038] In some embodiments, the fresh air inlet is oriented upwards.

[0039] In some embodiments, the second volute includes: a second volute half, the second volute half being located on the side of the first volute facing the heat exchange fan and detachably connected to the first volute, the second volute half having an axial ventilation opening at its radial center, a volute cavity being formed between the second volute half and the first volute, the fresh air fan being located within the volute cavity, the axial air inlet of the fresh air fan being positioned facing the axial ventilation opening, and the second volute half and the first volute enclosing the fresh air outlet; and a fan shroud, the fan shroud being located on the side of the second volute half facing the heat exchange fan and detachably connected to the second volute half, the cavity enclosed by the fan shroud and the second volute half being a fresh air cavity, and the fan shroud and the second volute half enclosing the fresh air inlet.

[0040] In some embodiments, the system further includes: a purification component installed inside the fresh air cavity, the purification component being connected to the second volute, and the fresh air fan rotating to allow outdoor air to enter the fresh air volute from the fresh air inlet, and to allow the outdoor air entering the fresh air volute to be blown through the purification component and then enter the room from the fresh air outlet.

[0041] In some embodiments, the purification element includes a filter screen covering the axial vent.

[0042] In some embodiments, the filter screen is a square mesh, and the side length of the filter screen is greater than the diameter of the axial vent.

[0043] In some embodiments, a portion of the fresh air cavity constitutes an empty cavity, the cavity being located on the side of the purification unit away from the fresh air fan, and the fresh air inlet communicating with the cavity.

[0044] In some embodiments, the fan shroud forms a positioning protrusion on the side facing the indoor heat exchanger; the base has an end plate at one end near the fan shroud, the end plate being used to mount the indoor heat exchanger and the heat exchange fan; a positioning notch is formed on the end plate, and the positioning protrusion and the positioning notch cooperate.

[0045] In some embodiments, an installation opening is formed between the fan cover and the second volute half, and the purification component is detachably assembled into the fresh air cavity through the installation opening.

[0046] In some embodiments, a purification air inlet for communicating with the indoor environment is formed on the fresh air volute. The rotation of the fresh air fan allows indoor air to enter the fresh air volute from the purification air inlet for purification by the purification component, and allows indoor air entering the fresh air volute to enter the room from the fresh air outlet. The purification air inlet is located at the bottom of the fresh air volute and is oriented downwards.

[0047] In some embodiments, the exhaust volute includes an air guide ring, which is a circular tube and has a decreasing diameter in the direction toward the heat exchange fan. The area enclosed by the air guide ring forms the exhaust air inlet. The exhaust fan includes an exhaust wheel and exhaust blades. The exhaust wheel is connected to the motor housing of the second motor. The exhaust blades are connected to the side of the exhaust wheel away from the heat exchange fan. The exhaust blades are multiple and arranged circumferentially.

[0048] The edge of the exhaust blade away from the exhaust wheel is the blade side edge. The distance between the part of the blade side edge near the second motor and the exhaust wheel decreases, and all the exhaust blades form a side edge recess at the point where the distance between the blade side edges decreases; the end of the air guide ring is located in the side edge recess.

[0049] In some embodiments, at least one of the fresh air fan and the exhaust fan includes: a disc and blades connected to the disc, wherein the blades are provided with a transition rounded corner structure at the connection between the blades and the disc.

[0050] In some embodiments, an indoor exhaust vent is formed on the exhaust volute for connecting to the room, and the rotation of the exhaust fan can cause indoor air entering the exhaust volute to be discharged into the room through the indoor exhaust vent.

[0051] A wall-mounted air conditioner according to an embodiment of this disclosure includes: a main body, the main body comprising: a casing, the casing having an internal cavity, a heat exchange air inlet and a heat exchange air outlet formed on the casing, the heat exchange air inlet being located above the heat exchange air outlet in the height direction of the main body; an indoor heat exchanger disposed within the internal cavity; a base disposed within the internal cavity, on which a volute air duct is formed; a heat exchange fan disposed within the volute air duct and located on the side of the indoor heat exchanger away from the heat exchange air inlet; and a first motor disposed within the internal cavity and located at one end in the length direction of the main body, for driving the heat exchange fan to rotate, thereby circulating air within the air conditioner and the indoor space.

[0052] The wall-mounted air conditioner further includes: a second motor, disposed within the accommodating cavity, and located at the other end of the length direction of the main body; the second motor is an external rotor motor, comprising: a stator portion having wound coils; a rotor portion arranged radially around the outside of the stator portion; a motor housing fixedly connected to the rotor portion; and an output shaft fixedly connected to the motor housing and extending along the axial direction of the motor housing toward one side of the heat exchange fan.

[0053] The wall-mounted air conditioner further includes: a fresh air fan, which is an axially intake and radially exhaust centrifugal fan, located on the side of the heat exchange fan away from the first motor, between the heat exchange fan and the motor housing, and connected to the output shaft of the second motor; and an exhaust fan, which is an axially intake and radially exhaust centrifugal fan, located on the side of the fresh air fan facing the second motor along the length of the main body, sleeved on the radially outer side of the motor housing, and connected to the motor housing.

[0054] When the second motor is in operation, it drives the fresh air fan and the exhaust fan to rotate synchronously.

[0055] The wall-mounted air conditioner further includes: a fresh air volute, a fresh air duct is formed inside the fresh air volute, a fresh air fan is installed inside the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; the rotation of the fresh air fan can allow outdoor air to enter the fresh air volute from the fresh air inlet, and can allow outdoor air entering the fresh air volute to enter the room from the fresh air outlet.

[0056] 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; an exhaust fan is installed inside the exhaust volute; and an exhaust inlet and an exhaust outlet are formed on the exhaust volute. The rotation of the exhaust fan allows indoor air to enter the exhaust volute from the exhaust inlet and allows indoor air entering the exhaust volute to be exhausted to the outside from the exhaust outlet. The exhaust fan includes an exhaust wheel and exhaust blades, with the exhaust blades located on the outer edge of the exhaust wheel and extending along the axial direction of the exhaust wheel in a direction away from the fresh air fan.

[0057] The exhaust fan also includes a protrusion on the exhaust wheel, the center of the protrusion being located on the axis of the exhaust fan, and the protrusion extending relative to the exhaust wheel toward the fresh air fan, such that the side of the protrusion near the second motor forms a receiving groove for the second motor; at least a portion of the stator and at least a portion of the rotor are accommodated in the receiving groove.

[0058] The fresh air volute includes: a first volute, which is located on the side of the exhaust volute facing the heat exchange fan and is detachably connected to the exhaust volute; and a second volute, which is located on the side of the first volute facing the heat exchange fan and is detachably connected to the first volute, with the first volute located between the exhaust volute and the second volute; the first volute includes a first volute end plate and a first volute perimeter plate, the first volute perimeter plate extending along the edge of the first volute end plate toward the heat exchange fan.

[0059] The central portion of the first volute end plate forms a recess facing the fresh air fan, and the center of the recess has a perforation; at least a portion of the protrusion is located in the recess, and the output shaft is connected to the fresh air fan through the perforation.

[0060] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0061] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0062] Figure 1 is a perspective view of the main body of a wall-mounted air conditioner according to some embodiments (part of the casing is hidden in the figure);

[0063] Figure 2 is a front view of the main body of a wall-mounted air conditioner according to some embodiments (part of the casing is hidden in the figure);

[0064] Figure 3 is a perspective view of the interior of the main body in one direction according to some embodiments;

[0065] Figure 4 is a perspective view of the interior of the main body from another direction according to some embodiments;

[0066] Figure 5 is a perspective view of a bidirectional ventilation assembly according to some embodiments;

[0067] Figure 6 is another perspective view of a bidirectional ventilation assembly according to some embodiments;

[0068] Figure 7 is a side view of a bidirectional ventilation assembly according to some embodiments;

[0069] Figure 8 is a cross-sectional view along the AA direction in Figure 7;

[0070] Figure 9 is an exploded view of a second motor according to some embodiments;

[0071] Figure 10 is a cross-sectional view of a second motor according to some embodiments;

[0072] Figure 11 is a cross-sectional view of an exhaust fan according to some embodiments;

[0073] Figure 12 is a front view of a fresh air fan according to some embodiments;

[0074] Figure 13 is a side view of a fresh air fan according to some embodiments;

[0075] Figure 14 is an exploded view of a bidirectional ventilation assembly (hidden parts) according to some embodiments in one direction;

[0076] Figure 15 is an exploded view of a bidirectional ventilation assembly according to some embodiments in another direction;

[0077] Figure 16 is a perspective view of a bidirectional ventilation assembly according to some embodiments;

[0078] Figure 17 is a schematic diagram of the assembly relationship between the exhaust volute, the fixed bracket and the exhaust fan according to some embodiments;

[0079] Figure 18 is a perspective view of the base according to some embodiments;

[0080] Figure 19 is a front view of the main body of a wall-mounted air conditioner according to some embodiments (part of the casing is hidden in the figure);

[0081] Figure 20 is a perspective view of the housing in the rear view according to some embodiments;

[0082] Figure 21A is a structural design derivation diagram of a bidirectional ventilation assembly according to some embodiments;

[0083] Figure 21B is a derivation of another structural design of a bidirectional ventilation assembly according to some embodiments;

[0084] Figure 21C is another structural design derivation diagram of a bidirectional ventilation assembly according to some embodiments;

[0085] Figure 21D is another structural design derivation diagram of a bidirectional ventilation assembly according to some embodiments;

[0086] Figure 21E is another structural design derivation diagram of a bidirectional ventilation assembly according to some embodiments.

[0087] Figure label:

[0088] Wall-mounted air conditioner 10000, main body 1000, casing 1, accommodating cavity V1, first chamber V11, second chamber V12, heat exchange air inlet 101, heat exchange air outlet 102, casing air inlet 103, first connecting ventilation duct V04, pipe avoidance opening 104, casing air outlet 105.

[0089] 2. Indoor heat exchanger, 3. Base, V03 volute air duct, 31. End plate, 311. Positioning notch, 301. First bracket, 302. Second bracket, 302. Mating port, 3021.

[0090] Heat exchange fan 41, first motor 42, second motor 5, stator 51, rotor 52, motor housing 53, output shaft 532.

[0091] Fresh air fan 6, fresh air wheel 61, wheel hole 612, fresh air blade 62, first fresh air blade 621, second fresh air blade 622.

[0092] Exhaust fan 7, receiving slot V07, exhaust wheel 71, exhaust blade 72, blade side edge 721, straight section 7211, curved section 7212, side edge recess 73, protrusion 74.

[0093] Fresh air volute 8, fresh air duct V01, volute cavity V011, fresh air cavity V012, air cavity V0121, fresh air inlet 801, fresh air outlet 802, installation port 803, purification air inlet 804, fresh air diffuser section 805, first hanging ear 806, second hanging ear 807.

[0094] First volute 81, first volute end plate 811, first volute surrounding plate 812, recessed portion 813, perforated portion 814.

[0095] Second volute 82, second volute half 821, axial ventilation port 8211, fan cover 822, positioning protrusion 8221, clearance notch 82211, first positioning surface F1, second positioning surface F2.

[0096] Exhaust volute 9, exhaust duct V02, exhaust inlet 901, exhaust outlet 902, indoor exhaust outlet 903, exhaust diffuser section 905, second volute enclosure 906, air guide ring 91.

[0097] Purification component 11, filter screen 111, first switching valve 12, electrical control box 13, fresh air inlet pipe 141, exhaust outlet pipe 142, second switching valve 15, air guide grille 16, fixed bracket 17, bracket end plate 171, bracket surrounding plate 172, wiring hole 173, mounting cavity 174, insulating sleeve 18, expansion tube 19, bearing seat 20. Detailed Implementation

[0098] The following description, in conjunction with the accompanying drawings, clearly and completely describes some embodiments of this disclosure. Obviously, the described embodiments are merely some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0099] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0100] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0101] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0102] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0103] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0104] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0105] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0106] Some embodiments of this disclosure provide a wall-mounted air conditioner 10000.

[0107] Typically, air conditioners are split-type air conditioners, which include an indoor unit and an outdoor unit. The indoor and outdoor units are connected by pipes to transfer refrigerant. The indoor unit includes an indoor heat exchanger 2 and a heat exchange fan 41.

[0108] The outdoor unit includes a compressor, an outdoor heat exchanger, an outdoor fan, and a throttling device. The compressor, outdoor heat exchanger, throttling device, and indoor heat exchanger 2 are connected in sequence to form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor heat exchanger and indoor heat exchanger 2 respectively to achieve the air conditioner's cooling mode or heating mode.

[0109] The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

[0110] The outdoor heat exchanger is configured to exchange heat between outdoor air and refrigerant transported within it. For example, in the cooling mode of the air conditioner, the outdoor heat exchanger operates as a condenser, causing the refrigerant compressed by the compressor to dissipate heat to the outdoor air and condense. In the heating mode of the air conditioner, the outdoor heat exchanger operates as an evaporator, causing the depressurized refrigerant to absorb heat from the outdoor air and evaporate.

[0111] In some embodiments, the outdoor heat exchanger further includes heat exchange fins to increase the contact area between the outdoor air and the refrigerant transported in the outdoor heat exchanger, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

[0112] The outdoor fan is configured to draw in outside air into the outdoor unit and expel the outdoor air, which has been heated by the outdoor heat exchanger, to the outside. The outdoor fan provides power for the flow of outdoor air.

[0113] A throttling device is connected between the outdoor heat exchanger and the indoor heat exchanger 2. This device regulates the refrigerant pressure flowing through both devices, thereby adjusting the refrigerant flow rate between them. The flow rate and pressure of the refrigerant flowing between the outdoor and indoor heat exchangers affect their heat exchange performance. The throttling device can be a throttling tube, an electronic valve, etc. When the throttling device is an electronic valve, its opening is adjustable to regulate the refrigerant flow rate and pressure.

[0114] In some designs, the air conditioner also includes a four-way valve connected to the refrigerant circuit. The four-way valve is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner can perform cooling mode or heating mode.

[0115] The indoor heat exchanger 2 is configured to exchange heat between indoor air and refrigerant transported 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 transported in the indoor heat exchanger 2, thereby improving the heat exchange efficiency between the indoor air and the refrigerant.

[0116] The heat exchange fan 41 is configured to draw indoor air into the indoor unit and deliver the indoor air, which has been heated by the indoor heat exchanger 2, into the room. The heat exchange fan 41 provides power for the flow of indoor air.

[0117] The air conditioner also includes a control device, which is mainly used to control the operating frequency of the compressor and the opening degree of the throttling device. Some control devices can also control the speed of the outdoor fan and the speed of the heat exchange fan 41. The control device is connected to the compressor, throttling device, outdoor fan and heat exchange fan 41 via data cables to transmit communication information.

[0118] The control device includes a processor, which may include a central processing unit (CPU), a microprocessor, or an application-specific integrated circuit (ASIC), and may be configured to perform the corresponding operations described in the control device when the processor executes a program stored in a non-transitory computer-readable medium coupled to the control device.

[0119] Non-transitory computer-readable storage media may include magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), smart cards, or flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or keyboard drive).

[0120] Currently, most wall-mounted air conditioners are limited by size and weight, and their functions are relatively limited, usually only able to cool or heat indoor air. If users feel that the indoor air is stale or stuffy after running the air conditioner for a long time, they need to open the windows for ventilation. This is not only inconvenient, but also causes the cool or warm air to escape quickly through the windows, affecting people's comfort.

[0121] Some air-conditioning systems using fresh air intake technology draw in fresh air from the outside and exhaust indoor air through an exhaust system. However, due to factors such as unreasonable structural design, the quality of the fresh air blown into the room by these systems is low, failing to achieve the goal of improving indoor air quality.

[0122] To address the aforementioned issues, some embodiments of this disclosure provide a wall-mounted air conditioner 10000. By adjusting and setting the structure and relative positions of components such as the second motor, exhaust fan, and motor housing, the cleanliness of the incoming fresh air can be improved while simultaneously exhausting and drawing air into the room.

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

[0124] The following description, with reference to the accompanying drawings, describes a wall-mounted air conditioner 10000 according to some embodiments of the present disclosure.

[0125] A wall-mounted air conditioner 10000 according to some embodiments of the present disclosure, as shown in Figures 1 and 2, includes: a main body 1000.

[0126] The main body 1000 includes a casing 1. As shown in Figure 20, a cavity V1 is formed inside the casing 1, and a heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the casing 1. The casing 1 serves a protective function and constitutes the overall external structure of the wall-mounted air conditioner 10000.

[0127] Typically, the housing 1 is a long, rectangular shell, with its length positioned horizontally, meaning it is mounted on the wall laterally. In actual products, to drain condensate, in some embodiments the housing 1 is mounted horizontally on the wall at a small angle to the horizontal plane.

[0128] Referring to Figures 3 and 4, the main body 1000 also includes an indoor heat exchanger 2, which is disposed within the accommodating cavity V1. As described above, the indoor heat exchanger 2 is a loop in the refrigerant circuit, and refrigerant flows inside the indoor heat exchanger 2 to cool or heat the air flowing from the surface of the indoor heat exchanger 2. In the wall-mounted air conditioner 10000, the indoor heat exchanger 2 is typically arranged to extend along the length of the casing 1.

[0129] 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.

[0130] Referring to Figures 3 and 4, the main body 1000 also includes a base 3, which is disposed within the accommodating cavity V1. The base 3 is an internal mounting support structure of the main body 1000, and the indoor heat exchanger 2 can be mounted on the base 3. For example, a volute air duct V03 is formed on the base 3. After the indoor air enters the casing 1, the flow direction is guided by the volute air duct V03, ensuring that the resistance encountered by the indoor air when flowing through the indoor heat exchanger 2 is small.

[0131] Referring to Figure 4, the main body 1000 also includes a heat exchange fan 41, which is disposed in the volute air duct V03.

[0132] In some embodiments, the heat exchange fan 41 is, for example, a cross-flow fan, which has low noise and large air volume, and the air velocity of the cross-flow fan is more evenly distributed along the axial direction of the cross-flow fan, which is beneficial to increasing the air delivery distance and air delivery range. Moreover, when a cross-flow fan is used and the cross-flow fan is arranged along the length direction of the main body 1000, it is beneficial for the driven airflow to flow through the entire indoor heat exchanger 2, ensuring the balance of heat exchange efficiency of each part of the indoor heat exchanger 2.

[0133] Referring to Figure 4, the main body 1000 further includes a first motor 42, which is disposed within the accommodating cavity V1. The first motor 42 is used to drive the heat exchange fan 41 to rotate, so that the air inside the air conditioner exchanges heat with the indoor space.

[0134] By providing a heat exchange outlet 102 and a heat exchange inlet 101 in the casing 1, the heat exchange fan 41 can draw indoor air into the casing 1 through the heat exchange inlet 101 when it is running. After the indoor air exchanges heat with the indoor heat exchanger 2, the heat-exchanged air is sent back into the room through the heat exchange outlet 102.

[0135] Therefore, the indoor ambient temperature can be regulated. The indoor heat exchanger 2 can be used as an evaporator to provide cooling airflow to the indoor space through the heat exchange outlet 102, or the indoor heat exchanger 2 can be used as a condenser to provide heating airflow to the indoor space through the heat exchange outlet 102.

[0136] In some embodiments, the heat exchange air inlet 101 is located above the heat exchange air outlet 102 in the height direction of the main body 1000, so that air can be drawn in from the top and discharged from the bottom.

[0137] For example, the height direction of the main body 1000 is the vertical direction.

[0138] Understandably, the main unit 1000 is usually installed on the wall, and to avoid interfering with people's daily lives, it is typically hung at a high position. By setting the main unit 1000 to blow out heat exchange air from below, the blown heat exchange air is less likely to be blocked by the roof or ground. This results in less resistance and energy loss during the air blowing process, a wider air delivery range, and allows the heat exchange air to flow throughout the entire indoor space as quickly as possible, thus improving heat exchange efficiency.

[0139] Referring to Figures 1 and 2, the heat exchange air inlet 101 is located above the heat exchange air outlet 102. The heat exchange air inlet 101 can draw air from above, which avoids air from entering through the heat exchange air outlet 102. This prevents the heat exchange air from being blown out of the heat exchange air outlet 102 and directly drawn into the heat exchange air inlet 101, reducing the process of the heat exchange air idling without participating in the indoor heat exchange.

[0140] In some embodiments, the heat exchange air inlet 101 is located on 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 of the wall-mounted air conditioner 10000.

[0141] In some embodiments, the heat exchange outlet 102 is located directly in front of the housing 1, that is, the heat exchange outlet 102 blows air towards the front of the main body 1000.

[0142] It is understandable that the side of the main body 1000 that is connected to the wall is usually called the back or rear side, while the side opposite to the rear side is called the front side. Therefore, when the heat exchange outlet 102 is located directly in front of the casing 1, the air outlet is away from the wall, the air resistance is small, and the air delivery range is wide.

[0143] In some embodiments, the heat exchange outlet 102 is located on the front side of the housing 1 and near the bottom, for example, the heat exchange outlet 102 is located at the lower front corner of the housing 1. In this case, the heat exchange air blown out of the heat exchange outlet 102 flows forward and downward at the same time, so that after being delivered a certain distance, the heat exchange air can sink and fall onto people or objects on the ground, so that people or objects on the ground can be in a suitable indoor environment as soon as possible.

[0144] In some embodiments of this disclosure, 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 is understood that the heat exchange fan 41 is a power drive component that drives the indoor air to exchange heat with the indoor heat exchanger 2 by rotation, and is also a power drive component for air supply.

[0145] By placing the heat exchange fan 41 on the side of the indoor heat exchanger 2 away from the heat exchange inlet 101, the aerodynamic force generated when the heat exchange fan 41 rotates can be evenly distributed. Part of it is distributed to the air inlet side, so that the air drawn in can overcome the wind resistance generated by the indoor heat exchanger 2 when it flows into the volute air duct V03. The other part is distributed to the air outlet side, so that the air after heat exchange can be transported a longer distance when it is blown out from the heat exchange outlet 102.

[0146] In some embodiments of this disclosure, as shown in FIG4, the first motor 42 is located at one end of the length direction of the main body 1000. This facilitates the installation and maintenance of the first motor 42, and the main body 1000 as a whole does not need to become excessively tall or thick due to the placement of the first motor 42. Here, the height direction of the main body 1000 is consistent with the vertical direction, and the thickness direction of the main body 1000 is consistent with the front-back direction.

[0147] In some embodiments of this disclosure, as shown in FIG8, the wall-mounted air conditioner 10000 further includes a second motor 5, which is disposed in the accommodating cavity V1 and located at the other end of the length direction of the main body 1000.

[0148] In this way, the first motor 42 and the second motor 5 are located at both ends of the length direction of the main body 1000. On the one hand, the two motors are separated and far apart, so that there is little electromagnetic interference between them. On the other hand, the two motors are arranged at both ends of the length direction of the main body 1000, rather than in the thickness or height direction of the main body 1000, so that the main body 1000 of the wall-mounted air conditioner 10000 has a slender shape, and is thin and light.

[0149] Referring to Figures 9 and 10, the second motor 5 includes a stator 51 and a rotor 52, which together form the main body of the second motor 5. The stator 51 has wound coils, which generate an alternating magnetic field when alternating current is applied. The rotor 52 is induced in the alternating magnetic field and rotates.

[0150] For example, the rotor section 52 can be a magnetic ring or a magnetic tile. For instance, if the rotor section 52 is a magnetic ring, leakage flux loss can be reduced, magnetic flux enhanced, and the power output efficiency of the second motor 5 improved. Furthermore, using a magnetic ring results in a more uniform magnetic field distribution, better anti-interference performance, and higher mechanical precision.

[0151] The second motor 5 is an external rotor motor, with the rotor portion 52 arranged radially around the outside of the stator portion 51. Choosing an external rotor motor for the second motor 5 not only simplifies its structure but also allows for a larger diameter due to the rotor portion 52's radial arrangement around the stator portion 51. This results in greater torque and makes it suitable for low-speed, high-torque, and direct-drive applications. In other words, when the second motor 5 outputs power, a speed reducer is not needed for torque amplification, saving space occupied by a speed reducer.

[0152] In addition, the rotor section 52 is located radially outside the stator section 51, with a larger heat dissipation area and better heat dissipation performance, which is beneficial to the stable operation of the second motor 5. Moreover, with this arrangement, the diameter of the second motor 5 can be controlled to be smaller, without encroaching on the airflow channel space.

[0153] Referring to Figures 9 and 10, the second motor 5 also includes a motor housing 53, which can support and protect the main body of the second motor 5.

[0154] The motor housing 53 is fixedly connected to the rotor 52, and the motor housing 53 and the rotor 52 rotate synchronously. In this way, the rotor 52 can be fixed by the motor housing 53, which facilitates connection with external structures.

[0155] The second motor 5 also includes an output shaft 532, which is fixedly connected to the motor housing 53 and extends along the axial direction of the motor housing 53 toward the heat exchange fan 41. In other words, the main body of the second motor 5 is separated from the indoor heat exchanger 2 and the heat exchange fan 41 by a certain distance, thereby reducing the vibration transmitted from the operation of the second motor 5 to the indoor heat exchanger 2 and the heat exchange fan 41.

[0156] Referring to Figure 8, the wall-mounted air conditioner 10000 also includes: a fresh air fan 6, which is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 53, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0157] Referring to Figure 8, the wall-mounted air conditioner 10000 further includes an exhaust fan 7, which is a centrifugal fan with axial air intake and radial air exhaust. Along the length of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is fitted radially outward of the motor housing 53 and is fixedly connected to the motor housing 53. For example, in operation, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously.

[0158] Centrifugal fans are characterized by their compact structure, large air volume, and low noise. Furthermore, fan noise decreases significantly as the speed decreases. Therefore, smaller centrifugal fans can meet the high air volume requirements for the fresh air fan 6 and the exhaust fan 7. The low vibration and noise of centrifugal fans make them less likely to resonate with the indoor heat exchanger 2, which helps reduce the overall vibration and noise of the wall-mounted air conditioner 10000.

[0159] Both the fresh air fan 6 and the exhaust fan 7 are centrifugal fans, allowing for a more efficient arrangement of their airflow directions. For example, the fresh air fan 6 draws in air axially and exits radially, while the exhaust fan 7 draws in air axially and exits radially. The fresh air fan 6 and exhaust fan 7 draw in air from opposite ends, and then both are driven to exit radially. The flow paths of the fresh air and exhaust air do not need to overlap axially, and their paths do not need to intersect. This helps reduce the need for bends and turns in the fresh air and exhaust paths, reducing wind resistance and energy consumption, ensuring airflow, and lowering noise.

[0160] Referring to Figures 5-8, the wall-mounted air conditioner 10000 further includes: a fresh air volute 8, a fresh air duct V01 formed inside the fresh air volute 8, a fresh air fan 6 installed inside the fresh air volute 8, and a fresh air inlet 801 and a fresh air outlet 802 formed on the fresh air volute 8. The rotation of the fresh air fan 6 allows outdoor air to enter the fresh air volute 8 through the fresh air inlet 801, and allows outdoor air entering the fresh air volute 8 to enter the room through the fresh air outlet 802.

[0161] Referring to Figures 5-8, the wall-mounted air conditioner 10000 further includes: an exhaust volute 9, located on the side of the fresh air volute 8 facing the second motor 5; an exhaust duct V02 formed inside the exhaust volute 9; an exhaust fan 7 installed inside the exhaust volute 9; and an exhaust air inlet 901 and an exhaust air outlet 902 formed on the exhaust volute 9. Rotation of the exhaust fan 7 allows indoor air to enter the exhaust volute 9 through the exhaust air inlet 901 and allows the indoor air entering the exhaust volute 9 to be exhausted to the outside through the exhaust air outlet 902.

[0162] In some embodiments of this disclosure, the fresh air volute 8 and the fresh air fan 6 constitute a fresh air device. The fresh air fan 6 is disposed within the fresh air duct V01 and is used to drive airflow to be drawn in from the fresh air inlet 801 and discharged into the room through the fresh air outlet 802. The operation of the fresh air fan 6 provides the power for the flow of fresh air.

[0163] Therefore, by setting up a fresh air duct V01 in conjunction with a fresh air fan 6, when the indoor air is relatively polluted or the air quality is poor, the fresh air fan 6 can drive relatively fresh outdoor air into the indoor environment to improve the indoor airflow environment.

[0164] In some embodiments of this disclosure, the exhaust volute 9 and the exhaust fan 7 constitute an exhaust device. The exhaust fan 7 is disposed within the exhaust duct VO2 and is used to drive airflow to be drawn in from the exhaust inlet 901 and discharged from the room through the exhaust outlet 902. The operation of the exhaust fan 7 provides the power for the flow of stale air.

[0165] Therefore, by setting up exhaust duct V02 in conjunction with exhaust fan 7, when the indoor air is relatively polluted or the air quality is poor, the exhaust fan 7 can draw away and exhaust the polluted airflow in the indoor space. After the indoor air volume is reduced, fresh air will be drawn in from the outside or from other rooms through doors and windows, thereby reducing the degree of indoor air pollution.

[0166] The second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8, and the exhaust volute 9 constitute a two-way ventilation assembly, which is installed within the main body 1000. The two-way ventilation assembly can provide fresh air to the room and exhaust indoor air to the outside.

[0167] It should be noted that the operating mode of the two-way ventilation component in the 10000 wall-mounted air conditioner can be set according to actual usage needs.

[0168] In some embodiments, the bidirectional ventilation component can operate in both fresh air mode and exhaust mode simultaneously, that is, the fresh air duct V01 and the exhaust air duct V02 can be opened at the same time. While the indoor polluted airflow flows to the outdoor space, the outdoor fresh airflow can also enter the indoor space. Through the combination of inlet and outlet airflow, the efficiency of indoor airflow improvement is increased, so as to meet the user's needs in a timely manner when the user urgently needs to exhaust or refresh the indoor air.

[0169] Furthermore, because it simultaneously exhausts indoor air to the outside and replenishes it with fresh outdoor air, maintaining a sufficient indoor air volume, it makes it easier to remove indoor air. For example, if there are irritating gases (such as gases released from home decoration materials), gas, or other gas leaks indoors, a bidirectional ventilation component can be set up to operate in both fresh air and exhaust modes simultaneously, achieving rapid air exchange. Compared to conventional fresh air structures that simply introduce fresh air, the bidirectional ventilation component in some embodiments of this disclosure has a larger purification flow rate per unit time, higher ventilation efficiency, and better purification effect.

[0170] Furthermore, the ventilation system avoids rapid airflow like opening a window, which could cause drastic temperature changes and discomfort for occupants due to sudden temperature fluctuations. Also, the main structure is positioned at a relatively high elevation, ensuring that ventilation points are not too close to people, thus preventing discomfort.

[0171] In some embodiments, the bidirectional ventilation component can selectively operate in either fresh air mode or exhaust mode. That is, when the bidirectional ventilation component is in fresh air mode, the exhaust mode is turned off, and only the fresh air duct V01 is ventilated, while the exhaust duct V02 is not ventilated. Alternatively, when the bidirectional ventilation component is in exhaust mode, the fresh air mode is turned off, and in this case, the fresh air duct V01 is not ventilated, while the exhaust duct V02 is ventilated.

[0172] In some embodiments, a two-way ventilation assembly is provided inside the wall-mounted air conditioner 10000, as shown in FIG8. The two-way ventilation assembly includes: a second motor 5, a fresh air fan 6, an exhaust fan 7, a fresh air volute 8, and an exhaust volute 9.

[0173] Since the bidirectional ventilation component in some embodiments of this disclosure needs to be installed inside the wall-mounted air conditioner 10000, and the wall-mounted air conditioner 10000 has size and weight limitations due to wall mounting, in order to avoid excessive increase in size and weight of the wall-mounted air conditioner 10000 after adding the bidirectional ventilation component, some embodiments of this disclosure have made many limitations and optimizations in the design of the bidirectional ventilation component, so that the designed wall-mounted air conditioner 10000 has practical use and promotion value.

[0174] For ease of description and to avoid confusion with the structural descriptions in some embodiments of this disclosure, the second motor 5 in the optimization process is referred to as the preset second motor 01, the fresh air fan 6 in the optimization process is referred to as the preset fresh air fan 02, and the exhaust fan 7 in the optimization process is referred to as the preset exhaust fan 03. The preset second motor 01, the preset fresh air fan 02, and the preset exhaust fan 03 can be collectively referred to as the dual impeller mechanism 010, as shown in Figures 21A to 21E.

[0175] As shown in Figure 21A, due to the size limitations of the wall-mounted air conditioner 1000, the lateral space available for the dual-fan mechanism 010 is limited. Assuming that only x0 can be provided, the total axial thickness of the dual-fan mechanism 010 can be considered as x0. After determining the power requirements for fresh air and exhaust air, the motor power of the preset second motor 01 can be determined. The motor is then selected based on the motor power, and the axial thickness x1 of the main body of the preset second motor 01 is obtained.

[0176] As shown in Figure 21B, after removing the main body of the preset second motor 01, the remaining lateral space in the dual-fan mechanism 010 is limited, and the axial thickness is insufficient (x0-x1). If both the preset fresh air fan 02 and the preset exhaust fan 03 are installed on the output shaft of the preset second motor 01, the sum of the axial thickness x2 of the preset fresh air fan 02 and the axial thickness x3 of the preset exhaust fan 03 is insufficient (x0-x1). Since x2 and x3 are both relatively small, they cannot meet the requirements for fresh air volume and exhaust air volume. Therefore, the design directions shown in Figures 21A and 21B are not acceptable.

[0177] As shown in Figure 21C, to improve the structural compactness of the components within the dual-fan mechanism 010, the preset second motor 01 is selected as an external rotor motor. To meet the design requirement that the fresh air volume is greater than the exhaust air volume, the preset fresh air fan 02 is installed on the output shaft of the preset second motor 01, and the preset exhaust fan 03 is installed on the main body of the preset second motor 01. This way, the main body of the preset second motor 01 will not encroach on the fresh air duct space. At this time, the axial thickness x2 of the preset fresh air fan 02 should be set as large as possible, approximately equal to (x0-x1). The axial thickness x3 of the preset exhaust fan 03 should also be set as large as possible, approximately equal to x1.

[0178] Even with this design, calculations show that the fresh air volume is still insufficient. The airflow of a fan is determined by factors including blade area. Typically, the blades are positioned far from the fan center and close to the outer edge. Adjusting the axial dimension of the fan blades can increase the blade area while maintaining the axial thickness of the fan's central portion.

[0179] Therefore, as shown in Figure 21D, the blades of the preset fresh air fan 02 in Figure 21C can be extended towards the preset exhaust fan 03, bypassing the main body of the preset second motor 01. The axial dimension of the outer edge of the preset fresh air fan 02 with blades is adjusted from x2 in Figure 21C to x2-1 in Figure 21D, while the axial thickness of the central part of the preset fresh air fan 02 can still be retained as x2 in Figure 21C. In this way, the blade area of ​​the preset fresh air fan 02 is increased, and the fresh air volume can be significantly increased.

[0180] As shown in Figure 21E, to adapt to the changed shape of the preset fresh air fan 02, the outer edge of the preset exhaust fan 03 with blades can be reduced in the direction away from the preset fresh air fan 02, while the central part of the preset exhaust fan 03 can retain its axial thickness unchanged. Thus, the final preset exhaust fan 03 has its outer edge axial thickness adjusted from x3 in Figure 21C to x3-1 in Figure 21E.

[0181] Ultimately, the central part and the outer edge of the preset exhaust fan 03 are not aligned axially, and the central part of the preset exhaust fan 03 protrudes towards the preset fresh air fan 02 relative to the outer edge. At this time, although the exhaust air volume is reduced, it can still meet the exhaust requirements of the wall-mounted air conditioner 10000.

[0182] It is understandable that after the shape and layout of the dual impeller mechanism 010 are determined, the structure of the preset second motor 01, the preset fresh air fan 02, and the preset exhaust fan 03 are further refined and designed to finally obtain the second motor 5, the fresh air fan 6, and the exhaust fan 7 in some embodiments of this disclosure.

[0183] In some embodiments, the second motor 5 is an external rotor motor. The second motor 5 includes: a stator portion 51, a rotor portion 52, a motor housing 53, and an output shaft 532. The stator portion 51 has coils wound on it. In the radial direction of the stator portion 51, the rotor portion 52 is disposed around the outside of the stator portion 51. The motor housing 53 is fixedly connected to the rotor portion 52. The output shaft 532 is fixedly connected to the motor housing 53 and extends along the axial direction of the motor housing 53 toward the side of the heat exchange fan 41.

[0184] In some embodiments, the fresh air fan 6 is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 53, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0185] In some embodiments, the exhaust fan 7 is a centrifugal fan with axial air intake and radial air exhaust. Along the length of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is fitted radially outward of the motor housing 53 and is fixedly connected to the motor housing 53. In operation, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously.

[0186] In some embodiments, as shown in FIG8, a fresh air duct V01 is formed inside the fresh air volute 8, and a fresh air fan 6 is installed inside the fresh air volute 8. As shown in FIG6, a fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8. The rotation of the fresh air fan 6 allows outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and allows outdoor air entering the fresh air volute 8 to enter the room from the fresh air outlet 802.

[0187] In some embodiments, as shown in FIG8, 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. An 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. The rotation of the exhaust fan 7 allows indoor air to enter the exhaust volute 9 from the exhaust inlet 901 and allows the indoor air entering the exhaust volute 9 to be exhausted to the outside from the exhaust outlet 902.

[0188] In some embodiments, the second motor 5 is located at the end of the main body 1000 along its length, and the axial direction of the second motor 5 is arranged along the length of the main body 1000. The second motor 5 serves as the common power source for the fresh air device and the exhaust device of the bidirectional ventilation assembly. To ensure the operation of the fresh air device and the exhaust device, the second motor 5 needs to have sufficient operating power to drive a sufficient airflow. Based on the power requirements of the second motor 5, the second motor 5 needs to be of a sufficiently large size.

[0189] In some embodiments, given that the size parameters of the second motor 5 are generally determined, the arrangement of the fresh air device and the exhaust air device takes into account how to utilize the space where the second motor 5 is located, and occupy as little additional space as possible.

[0190] In some embodiments, both the fresh air fan 6 and the exhaust fan 7 are centrifugal fans and are connected to the same motor, which not only saves the number of motors, but also keeps the two centrifugal fans stacked along the axial direction of the second motor 5, that is, the two centrifugal fans are stacked along the length direction of the main body 1000.

[0191] In some embodiments, the centrifugal fan itself is relatively flat in the axial direction. The stacking of the fresh air fan 6 and the exhaust fan 7 in this way can reduce the overall axial dimension occupied, so that the length of the main body 1000 does not need to be too long. Since the fresh air fan 6 and the exhaust fan 7 are connected to the same motor and rotate synchronously, they are in sync and do not need to be separated by a large gap. The axial distance between the fresh air fan 6 and the exhaust fan 7 can be arranged to be relatively close.

[0192] It should be noted that when describing the internal structure of the bidirectional ventilation assembly, the terms "axial", "radial", and "circumferential" are all based on the axial, radial, and circumferential directions of the motor. That is, the direction parallel to the extension direction of the output shaft 532 of the second motor 5 is the axial direction, the direction perpendicular to the extension direction of the output shaft 532 is the radial direction, and the direction around the output shaft 532 is the circumferential direction.

[0193] In the above scheme, by adopting an external rotor motor for the second motor 5, and the exhaust fan 7 being fitted on the radially outer side of the motor housing 53, the second motor 5 is partially embedded in the exhaust fan 7 within the motor housing 53, and partially embedded in the fresh air fan 6 within the output shaft 532. This results in the second motor 5 almost overlapping with the exhaust fan 7 and the fresh air fan 6 in the length direction of the main body 1000, minimizing the axial portion of the exhaust fan 7 and the fresh air fan 6 outside the second motor 5. Consequently, the overall axial dimension of the bidirectional ventilation assembly is close to that of the second motor 5, thus making the length dimension of the main body 1000 controllable.

[0194] For example, the main body of the second motor 5 is located inside the exhaust fan 7, rather than the fresh air fan 6, which allows more space for airflow in the fresh air duct V01, facilitating the intake of fresh air. Understandably, when the wall-mounted air conditioner 10000 is in cooling mode, the fresh air unit draws in fresh air from outdoors to indoors, and the cooling capacity generated by the wall-mounted air conditioner 10000 can still remain indoors, resulting in minimal cooling loss.

[0195] In some embodiments, indoor air is exhausted outdoors through an exhaust fan. By setting the exhaust air volume to be less than the fresh air volume, cooling loss can be reduced. Therefore, by squeezing the space of the exhaust duct V02 into the second motor 5, more space is left for the fresh air duct V01, which helps to ensure a larger fresh air volume.

[0196] Furthermore, because the second motor 5 uses an external rotor motor suitable for low-speed, high-torque, and direct-drive scenarios, a reducer is unnecessary. The exhaust fan 7 can be directly mounted radially outside the motor housing 53. This not only avoids increasing the overall axial dimension of the reducer but also avoids complicating the structural layout. Simply fixing the exhaust fan 7 to the motor housing 53 and connecting the fresh air fan 6 to the output shaft 532 of the second motor 5 allows the exhaust fan 7 and fresh air fan 6 to be coaxially stacked, enabling them to rotate synchronously with a small gap, eliminating the need for excessive spacing. This also ensures that the overall axial dimension of the bidirectional ventilation assembly is close to that of the second motor 5, and the length of the main body (1000mm) is controllable.

[0197] In some embodiments, placing the fresh air fan 6 on the side of the exhaust fan 7 facing the indoor heat exchanger 2 can reduce the loss of cold or heat in the room and improve the comfort of fresh air when it is blown into the room. For example, if the fresh air device where the fresh air fan 6 is located is close to the indoor heat exchanger 2, the fresh air drawn in from the outside can absorb the cold or heat released by the indoor heat exchanger 2 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.

[0198] In this way, when the wall-mounted air conditioner 10000 is cooling, the fresh air absorbs the cooling capacity of the indoor heat exchanger 2, lowering the temperature of the incoming fresh air and preventing hot outdoor air from being directly blown into the room. When the wall-mounted air conditioner 10000 is heating, the fresh air absorbs the heat of the indoor heat exchanger 2, raising the temperature of the incoming fresh air and preventing cold outdoor air from being directly blown into the room. Furthermore, the exhaust fan 7 is located far from the indoor heat exchanger 2, resulting in less cooling or heating capacity absorbed from the indoor air after it is drawn in, and less cooling or heating capacity is lost when exhausted outdoors.

[0199] In some embodiments, the fresh air fan 6 is positioned on the side of the exhaust fan 7 facing the indoor heat exchanger 2. This reduces the amount of condensate entering the air duct when the indoor heat exchanger 2 is cooling. For example, the exhaust volute 9 of the exhaust device has an exhaust inlet 901 that draws air from the room, and the exhaust fan 7 draws air axially. Therefore, the exhaust inlet 901 is located on the side of the exhaust volute 9 away from the indoor heat exchanger 2. When there is condensate on one side of the indoor heat exchanger 2, the condensate is less likely to be drawn into the exhaust duct V02 by the exhaust device, reducing the risk of water accumulation and bacterial growth in the exhaust duct V02, and reducing the risk of condensate entering the second motor 5 and causing motor damage. Meanwhile, when the fresh air fan 6 is rotating, the fresh air device draws air from the outside. At this time, the condensate on the indoor heat exchanger 2 will not be drawn into the fresh air duct V01, further reducing the risk of water accumulation and bacterial growth in the fresh air duct V01.

[0200] In some embodiments, 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, which needs to draw air from the room, its intake energy consumption is also low. For example, when the wall-mounted air conditioner 10000 is cooling or heating, the heat exchange fan 41 operates to drive indoor air to flow through the indoor heat exchanger 2. The exhaust fan 7 is located at the end of the main body 1000, and the air inlet of the exhaust fan 7 is far from the air inlet of the heat exchange fan 41. The exhaust fan 7 does not need to draw air from the air inlet of the heat exchange fan 41, and the intake energy consumption of the exhaust fan 7 can be reduced. This ensures sufficient exhaust air volume and sufficient indoor air to flow through the indoor heat exchanger 2 to obtain sufficient heat exchange air, thereby keeping the overall energy consumption of the wall-mounted air conditioner 10000 from being too high.

[0201] In some embodiments, the fresh air unit and the exhaust unit are effectively integrated, allowing both units to utilize their respective structural and spatial characteristics to achieve a flattened design. This not only reduces the overall size and weight of the bidirectional ventilation component, making it lighter and more compact, but also ensures that the air ducts do not interfere with each other. The bidirectional ventilation component is located at one end of the length of the main body 1000. Compared to the main body without the bidirectional heat exchange component, only the lateral length is increased. The height and thickness of the main body 1000 can remain largely unchanged or only slightly altered, resulting in a slim and lightweight design. When mounted on a wall, it will not obtrusively affect the interior space layout, and its excessive weight will not make it difficult to secure the wall-mounted air conditioner 10000, reducing the risk of it falling off the wall. The wall-mounted air conditioner 10000 remains a slim and lightweight model, making it aesthetically pleasing and with manageable weight when mounted on the wall.

[0202] In some embodiments, the fresh air inlet 801 is located below the main body 1000 in the height direction. It is understood that the fresh air inlet 801 needs to be connected to a duct to introduce outdoor air; this duct is referred to here as the fresh air inlet pipe 141 (as shown in Figure 2). The fresh air inlet pipe 141 can be a component of the wall-mounted air conditioner 10000, or it can be a fresh air inlet pipe 141 separately configured by the user after purchasing the wall-mounted air conditioner 10000.

[0203] By positioning the fresh air inlet 801 at the bottom of the main body 1000, the fresh air inlet pipe 141 can be connected to the fresh air inlet 801 from below. The connection extends roughly in the vertical direction, rather than in the front-back direction, which would make the main body 1000 too thick, thus allowing the wall-mounted air conditioner 10000 to maintain a slim and lightweight shape. Furthermore, the portion of the fresh air volute 8 that houses the fresh air fan 6 is circular. Since the axis of the fresh air volute 8 extends along the length of the main body 1000, there is free space on both the front and rear sides of the bottom of this circle. This space can be used to position the fresh air inlet 801 to connect to the fresh air inlet pipe 141. Thus, the connection between the fresh air inlet pipe 141 and the fresh air inlet 801 can be placed in this free space without occupying additional space, thereby controlling the height of the main body 1000.

[0204] In some embodiments, the exhaust outlet 902 is located below the main body 1000 in the height direction. It is understood that the exhaust outlet 902 needs to be connected to a duct to guide indoor air to the outside; this duct is referred to here as the exhaust outlet pipe 142 (as shown in Figure 2). The exhaust outlet pipe 142 can be a component of the wall-mounted air conditioner 10000, or it can be an exhaust outlet pipe 142 separately configured by the user after purchasing the wall-mounted air conditioner 10000.

[0205] The exhaust outlet 902 is positioned below the main body 1000, allowing the exhaust pipe 142 to connect to it from below. The connection extends roughly vertically rather than front-to-back, preventing the main body 1000 from becoming too thick. This allows the wall-mounted air conditioner 10000 to maintain a slim and lightweight design. Furthermore, the portion of the exhaust volute 9 housing the exhaust fan 7 is circular. Since the axis of the exhaust volute 9 extends along the length of the main body 1000, this circular shape provides ample space on both the front and rear sides of the bottom. Moreover, given the axial air intake and radial air exhaust characteristics of the exhaust fan 7, the diffuser section of the exhaust volute 9 can be arranged roughly vertically and placed within the aforementioned front or rear ample space.

[0206] An exhaust outlet 902 is provided here to connect to the exhaust pipe 142, so that the connection between the exhaust pipe 142 and the exhaust outlet 902 can be placed in this empty space without occupying additional space, thus controlling the height of the main body 1000.

[0207] In some embodiments, as shown in FIG2, the wall-mounted air conditioner 10000 further includes: a fresh air inlet pipe 141 connected to the fresh air inlet 801 and an exhaust outlet pipe 142 connected to the exhaust outlet 902. A pipe avoidance opening 104 is provided on the bottom wall of the casing 1. The fresh air inlet pipe 141 and the exhaust outlet pipe 142 pass through the pipe avoidance opening 104 and extend out of the main body 1000 from below. The fresh air inlet pipe 141 and the exhaust outlet pipe 142 are two independent pipes, which helps to separate the fresh air flow path and the exhaust air flow path from each other, so that they do not cross and reduce the risk of air leakage caused by crossflow.

[0208] A pipe avoidance opening 104 is provided on the bottom wall of the main body 1000 to facilitate the installation of the aforementioned pipes and ensure the aesthetic appearance of the main body 1000. The fresh air inlet pipe 141 and the exhaust outlet pipe 142 are connected from the bottom of the main body 1000, which does not affect the upper area of ​​the wall-mounted air conditioner 10000 after it is hung on the indoor wall. That is, the fresh air inlet pipe 141 and the exhaust outlet pipe 142 will not interfere with the rear wall or the upper ceiling, making the installation of the wall-mounted air conditioner 10000 more convenient and quick.

[0209] In some embodiments, the fresh air inlet 801 is oriented upwards. For example, the air inlet 801 is perpendicular to the length direction of the main body 1000. Thus, when a bidirectional ventilation assembly is installed at the end of the wall-mounted air conditioner 10000, the fresh air inlet pipe 141 connected to the fresh air inlet 801 will not cause the wall-mounted air conditioner 10000 to be excessively elongated.

[0210] In some embodiments, the fresh air inlet 801 is located at the bottom of the main body 1000 and is positioned near the rear side, so that after the fresh air inlet 801 is connected to the fresh air inlet pipe 141, it is convenient for the fresh air inlet pipe 141 to be arranged close to the wall.

[0211] In some embodiments, the exhaust outlet 902 is oriented downwards. For example, the exhaust outlet 902 is perpendicular to the length direction of the main body 1000. This way, when a bidirectional ventilation assembly is installed at the end of the wall-mounted air conditioner 10000, the exhaust outlet pipe 142 will not cause the wall-mounted air conditioner 10000 to be excessively elongated when connected to the exhaust outlet 902.

[0212] In some embodiments, the exhaust outlet 902 is located at the bottom of the main body 1000 and is disposed near the rear side, so that after the exhaust outlet 902 is connected to the exhaust pipe 142, it is convenient for the exhaust pipe 142 to be arranged close to the wall.

[0213] Of course, some embodiments of this disclosure are not limited to this. As shown in FIG1, the duct clearance opening 104 can also be provided on the side wall of the housing 1. The fresh air inlet pipe 141 connects to the fresh air inlet 801 from the bottom of the main body 1000, bends and extends laterally, and then extends out from the duct clearance opening 104 on the side wall of the housing 1, and then extends to the outside. The exhaust outlet pipe 142 connects to the exhaust outlet 902 from the bottom of the main body 1000, bends and extends laterally, and then extends out from the duct clearance opening 104 on the side wall of the housing 1, and then extends to the outside.

[0214] It is understandable that the main body 1000 is usually equipped with a refrigerant pipe and a drain pipe at one end in the length direction. The refrigerant pipe is used to connect the indoor heat exchanger 2 to the outdoor compressor and outdoor heat exchanger, and the drain pipe is used to drain the condensate generated inside the wall-mounted air conditioner 10000.

[0215] The duct clearance opening 104 is set on the side wall of the casing 1. Then, the fresh air inlet pipe 141 and the exhaust outlet pipe 142 are laid horizontally and led out, making it easy to place at least one of the fresh air inlet pipe 141 and the exhaust outlet pipe 142 alongside the drain pipe and refrigerant pipe. In this way, the multiple pipes are wrapped with an external bundle or strap, so that the multiple pipes appear as a single pipe. This reduces the number of connecting pipes on the wall-mounted air conditioner 10000 after installation, resulting in a simple appearance. This not only facilitates assembly but also avoids the risk of multiple pipes being bumped or knocked over.

[0216] In some embodiments, as shown in Figures 8 and 11, the exhaust fan 7 forms a receiving groove VO7 at its radial center, and at least a portion of the stator portion 51, at least a portion of the rotor portion 52, and at least a portion of the motor housing 53 of the second motor 5 are accommodated in the receiving groove VO7.

[0217] For example, the hub of the exhaust fan 7 forms a receiving groove V07. At this time, the main body of the second motor 5 (i.e., the stator 51 and the rotor 52) and the motor housing 53 can be placed in the center of the exhaust fan 7 without obstructing the flow of exhaust air. The hub space of the exhaust fan 7 can be fully utilized, reducing the space occupied by the second motor 5 on the outside.

[0218] Furthermore, the hub of the exhaust fan 7 has a protective function on the outside of the second motor 5, and it can also make the center of gravity of the exhaust fan 7 as close as possible to the center of the rotor 52. As a result, the bending moment generated by the exhaust fan 7 on the second motor 5 is small, the sway of the exhaust fan 7 is small when it rotates, and the exhaust fan 7 operates stably with low energy consumption.

[0219] In some embodiments, as shown in FIG1, a housing air outlet 105 is provided on the housing 1. The housing air outlet 105 is provided corresponding to the fresh air outlet 802 of the fresh air volute 8, so that the fresh air discharged from the fresh air outlet 802 is discharged from the housing air outlet 105.

[0220] In some embodiments, the fresh air outlet 802 is located at the front of the main body 1000, and the casing outlet 105 can be correspondingly located on the front side of the casing 1, which facilitates the output of fresh air from the front of the main body 1000. When the wall-mounted air conditioner 10000 is installed on the wall, especially at a high position on the wall, there are few obstructions in front, and the air outlet from the front can ensure a large air supply area for fresh air.

[0221] In some embodiments, the fresh air outlet 802 is located at the top of the main body 1000, and the housing outlet 105 can be correspondingly set on the top wall of the housing 1. In this way, the fresh air is delivered towards the roof, and the roof can be used to guide the flow direction of the fresh air, so that the fresh air flows along the roof and expands the air delivery area.

[0222] Furthermore, since the heat exchange air inlet 101 is located above the heat exchange air outlet 102, and the position of the heat exchange air inlet 101 on the casing 1 is relatively high, some of the fresh air blown out from the top of the fresh air outlet 802 can be drawn back into the accommodating cavity V1 through the heat exchange air inlet 101 and flow through the indoor heat exchanger 2.

[0223] This setup facilitates the rapid arrival of fresh air at room temperature, enhancing comfort when the fresh air is introduced. It also promotes thorough mixing of the fresh air with the indoor air flowing through the indoor heat exchanger 2, ensuring that the air blown into the room from the heat exchange outlet 102 is generally fresh and improving the uniformity of fresh air distribution within the room.

[0224] In some embodiments, the fresh air outlet 802 is located below the main body 1000 to guide fresh air forward and downward into the room. Correspondingly, the housing outlet 105 can be located below the housing 1.

[0225] Since the heat exchange air inlet 101 is located above the heat exchange air outlet 102, and the heat exchange air outlet 102 is relatively low on the casing 1, the fresh air outlet 802 blows fresh air from below, making the air outlet area of ​​the casing air outlet 105 close to or even partially overlap with the air outlet area of ​​the heat exchange air outlet 102. This is beneficial for the fresh air to mix with the indoor air after heat exchange, improving the uniformity of the fresh air after mixing in the indoor air, and allowing the fresh air to absorb the cold or heat of the indoor air after heat exchange, making the fresh air temperature approach the indoor temperature and improving the comfort of airflow.

[0226] Furthermore, the air outlet 802 is in the opposite direction to the air inlet 101, so fresh air will not be drawn into the air inlet 101. This reduces the proportion of fresh air intake at the air inlet 101, resulting in a larger total air volume output from the wall-mounted air conditioner 10000 and improving the overall air circulation efficiency of the indoor air.

[0227] Furthermore, the fresh air outlet 802 is located below the main body 1000, close to the people's activity space, making it convenient for people to observe the fresh air supply. This achieves a visual effect of fresh air supply, which helps to improve people's experience.

[0228] For example, when the fresh air outlet 802 is located below the main body 1000, it is usually located on the front side below the main body 1000. This allows the fresh air to flow forward and downward, ensuring that the fresh air can reach the ground and also that the fresh air can reach a sufficiently long distance.

[0229] For example, as shown in Figures 1 and 3, the housing 1 has an air outlet 105 with an air guide grille 16 to adjust the direction of fresh air flow.

[0230] In some embodiments, as shown in FIG3, an exhaust air inlet 901 is formed on the exhaust volute 9, and the axial direction of the exhaust air inlet 901 is arranged along the length direction of the main body 1000. That is, the exhaust air inlet 901 is directly opposite the axial air intake end of the exhaust fan 7, so that the air resistance of the exhaust fan 7 entering through the exhaust air inlet 901 is small, which helps to ensure the exhaust air volume. When exhaust air intake is relatively easy, a smaller exhaust fan 7 can be selected to further reduce the size of the bidirectional ventilation assembly.

[0231] For example, the exhaust air inlet 901 is positioned away from the indoor heat exchanger 2 on the exhaust volute 9, and the air intake area of ​​the exhaust air inlet 901 precisely avoids the indoor heat exchanger 2. When there is condensate on the indoor heat exchanger 2, or when condensate adheres to the surface of parts near the indoor heat exchanger 2 inside the accommodating cavity V1, the condensate is less likely to be drawn into the exhaust duct V02 by the exhaust fan 7, reducing the risk of water accumulation and bacterial growth in the exhaust duct V02, and reducing the risk of condensate entering the second motor 5 and causing motor damage. Meanwhile, when the fresh air fan 6 rotates, it draws air from the outside, and at this time, the condensate on the indoor heat exchanger 2 will not be drawn into the fresh air duct V01, reducing the risk of water accumulation and bacterial growth in the fresh air duct V01. In some embodiments, as shown in FIG1, the housing 1 is provided with a housing air inlet 103 at one end where the second motor 5 is located, and the housing air inlet 103 is located at the top of the main body 1000. A first ventilation duct V04 is formed between the housing air inlet 103 and the exhaust air inlet 901. The exhaust fan 7 rotates and drives indoor air to enter the first ventilation duct V04 through the housing air inlet 103, and causes indoor air to enter the exhaust volute 9 through the exhaust air inlet 901.

[0232] In other words, there is no need for a physical duct connecting the air inlet 103 and the exhaust air inlet 901; airflow is drawn in from the top solely by wind pressure. The air inlet 103 is located at the top of the housing 1, in an area not visible to the user. Concealing the air inlet 103 improves the aesthetics of the design.

[0233] In some embodiments, the housing 1 has a housing air inlet 103 at the end where the second motor 5 is located, and the housing air inlet 103 is located on the side of the main body 1000. The exhaust fan 7 rotates to drive indoor air into the interior of the housing 1 through the housing air inlet 103, and causes the indoor air to enter the exhaust volute 9 through the exhaust air inlet 901. That is to say, there is no need for a physical pipe to connect the housing air inlet 103 and the exhaust air inlet 901, and the housing air inlet 103 is located on the side of the main body 1000, which can be directly opposite the exhaust air inlet 901.

[0234] This shortens the air intake path from the housing air inlet 103 to the exhaust air inlet 901. Furthermore, since the air intake path is largely aligned with the axial direction of the exhaust fan 7, indoor air flowing towards the exhaust fan 7 along this path does not require multiple changes in airflow direction. This further reduces the air resistance at the exhaust air intake, ensuring sufficient exhaust airflow.

[0235] In some embodiments, the exhaust fan 7 may be made of plastic, thus being lightweight and low-cost. In some embodiments, the exhaust fan 7 may also be made of resin, metal, or the like.

[0236] In some embodiments, the fresh air fan 6 may be made of plastic, thus being lightweight and low-cost. In some embodiments, the fresh air fan 6 may also be made of resin, metal, or the like.

[0237] Similarly, the exhaust volute 9 can be made of plastic, thus being lightweight and low-cost. For example, the exhaust volute 9 can be an injection-molded part. In some embodiments, the exhaust volute 9 can also be made of metal, etc.

[0238] The fresh air volute 8 can be made of plastic, thus being lightweight and low-cost. For example, the fresh air volute 8 can be an injection-molded part. In some embodiments, the fresh air volute 8 can also be made of metal or the like.

[0239] In some embodiments, the area of ​​the outer circular curved surface of the fresh air fan 6 is S1, and the area of ​​the outer circular curved surface of the exhaust fan 7 is S2. This satisfies the condition that S1 > S2.

[0240] For example, 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 impeller 61 and the fresh air blades 62 on the fresh air fan 6.

[0241] The outer diameter D1 of the fresh air fan 6 refers to the diameter of the fresh air fan 6 at its furthest point from its axis. The fresh air fan 6 includes a fresh air impeller 61 and fresh air blades 62. The fresh air blades 62 are located at the outer edge of the fresh air impeller 61 and extend along its axial direction. The total axial thickness of the fresh air impeller 61 and the fresh air blades 62 is h1. Here, the fresh air impeller 61 on the fresh air fan 6 can be one, or at least two arranged at intervals along the axial direction. Each fresh air impeller 61 can have a ring of fresh air blades 62 on only one side of its axial sides, or it can have a ring of fresh air blades 62 on each side. When all the fresh air impellers 61 and fresh air blades 62 are projected vertically onto the axis of the fresh air fan 6, the distance between the two furthest points in the projection is equal to h1.

[0242] S2 = ΠD2×h2, where D2 is the outer diameter of the exhaust fan 7 and h2 is the total axial thickness of the fresh air impeller 61 and the fresh air blades 62 on the exhaust fan 7.

[0243] The outer diameter D2 of the exhaust fan 7 refers to the diameter of the exhaust fan 7 at its furthest point from its axis. The exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72. The exhaust blades 72 are located at the outer edge of the exhaust wheel 71 and extend along its axial direction. The total axial thickness of the exhaust wheel 71 and exhaust blades 72 is h2. Here, the exhaust fan 7 can have one exhaust wheel 71, or at least two arranged at intervals along the axial direction. Each exhaust wheel 71 can have one ring of exhaust blades 72 on only one side of its axial sides, or one ring of exhaust blades 72 on each side. When all the exhaust wheels 71 and exhaust blades 72 are projected vertically onto the axis of the exhaust fan 7, the distance between the two furthest points in the projection is equal to h2.

[0244] With this configuration, the outer curved surface area of ​​the fresh air fan 6 is large, while the outer curved surface area of ​​the exhaust fan 7 is small, which helps to achieve a larger fresh air volume within the limited space of the whole unit.

[0245] For example, according to the structural and functional requirements designed in some embodiments of this disclosure, the outer diameter D1 of the fresh air fan 6 is larger than the outer diameter D2 of the exhaust fan 7. This is beneficial because the area swept by the blades of the fresh air fan 6 when rotating is larger than the area swept by the blades of the exhaust fan 7 when rotating. Thus, the fresh air volume is greater than the exhaust air volume, which meets the design requirements of the wall-mounted air conditioner 10000. That is, drawing air from the open outdoor space and delivering it indoors consumes less energy compared to drawing air out of a relatively enclosed indoor space and exhausting it outdoors. Furthermore, the high freshness of the outdoor air makes drawing in outdoor air and blowing it indoors more beneficial for replenishing the indoor space with fresh air, increasing the oxygen content and reducing the carbon dioxide content.

[0246] Furthermore, 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 make the exhaust outlet 902 of the exhaust duct V02 and the fresh air outlet 802 of the fresh air duct V01 staggered on the outer periphery of the bidirectional ventilation component. This facilitates the connection of the exhaust outlet pipe 142 to the exhaust outlet 902 and the fresh air inlet pipe 141 to the fresh air outlet 802. On the other hand, it makes it easy to ensure that the flow paths of fresh air and exhaust air within the bidirectional ventilation component do not intersect.

[0247] For example, as shown in Figure 7, the fresh air volute 8 has a fresh air diffusion section 805, and the fresh air outlet 802 is located at the end of the fresh air diffusion section 805. That is, the portion of the fresh air volute 8 along its tangential direction from its volute tongue to the fresh air outlet 802 is the fresh air diffusion section 805. The exhaust volute 9 has an exhaust diffusion section 905, and the exhaust outlet 902 is located at the end of the exhaust diffusion section 905. That is, the portion of the exhaust volute 9 along its tangential direction from its volute tongue to the exhaust outlet 902 is the exhaust diffusion section 905.

[0248] For example, the fresh air diffuser section 805 and the exhaust diffuser section 905 extend in different directions to offset the fresh air outlet 802 and the exhaust air outlet 902. In the example in Figure 7, the angle between the extension direction of the fresh air diffuser section 805 and the vertical line is α1, and the angle between the extension direction of the exhaust diffuser section 905 and the vertical line is α2. α1 and α2 are not equal.

[0249] This design makes it easy to offset the exhaust outlet 902 of the exhaust duct V02 and the fresh air outlet 802 of the fresh air duct V01 on the outer periphery of the bidirectional ventilation component. This facilitates the connection of the exhaust outlet 902 to the exhaust outlet pipe 142 and the fresh air outlet 802 to the fresh air inlet pipe 141, avoiding interference caused by the two pipe joints being too close together. This design not only facilitates assembly but also makes sealing easier.

[0250] For example, in the height direction of the main body 1000, both the fresh air outlet 802 and the exhaust air outlet 902 are located below the main body 1000. In this way, the fresh air diffusion section 805 of the fresh air volute 8 and the exhaust diffusion section 905 of the exhaust volute 9 are both arranged to extend downwards, and the two diffusion sections are roughly at the same position in the height direction. This can avoid the fresh air volute 8 and the exhaust volute 9 occupying too much overall height, which helps to reduce the height dimension of the main body 1000.

[0251] For example, the exhaust diffuser section 905 is located on the rear side of the exhaust volute 9, and the exhaust outlet 902 is oriented downwards. This ensures that when the exhaust outlet 142 is connected to the exhaust outlet 902, the exhaust outlet 142 will not cause the wall-mounted air conditioner 10000 to be excessively elongated. Furthermore, the exhaust diffuser section 905 is located on the wall-facing side of the exhaust volute 9, making it easier to design the main body 1000 as wider at the back and narrower at the front.

[0252] By designing the main body of the 10000 as wider at the back and narrower at the front, with the wider back mounted against the wall, people tend to see the narrower front when observing the wall-mounted air conditioner 10000. This helps create the impression that the wall-mounted air conditioner 10000 is lighter and thinner. This reduces the feeling of heaviness of the wall-mounted air conditioner 10000, thereby reducing the oppressive feeling that would result from mounting it on the wall.

[0253] In some embodiments, the fresh air outlet 802 is oriented downwards while being tilted forward. This allows the wall-mounted air conditioner 10000 to expel fresh air forward, ensuring that the fresh air reaches the ground and travels a sufficient distance.

[0254] For example, the fresh air outlet 802 is located in front of the exhaust air outlet 902. This makes the fresh air outlet 802 and the exhaust air outlet 902 more offset, which is more conducive to reducing mutual interference and facilitating pipe connection.

[0255] In some embodiments, as shown in Figure 7, the length L1 of the fresh air diffusion section 805 is greater than the length L2 of the exhaust air diffusion section 905. The longer fresh air diffusion section 805 provides a longer flow path and a more thorough diffusion process for the airflow. This allows the airflow velocity to be effectively reduced and the pressure to gradually increase as it passes through the fresh air diffusion section 805, which is beneficial for extending the fresh air delivery distance. Since the exhaust air is discharged outdoors, the delivery distance after exhaust air does not need to be considered; therefore, the exhaust air diffusion section 905 can be set to a shorter length.

[0256] In the example in Figure 7, the exhaust diffuser section 905 is generally vertically positioned, while the fresh air diffuser section 805 is inclined. This ensures that the fresh air diffuser section 805 is relatively long without making the overall height of the components too high.

[0257] Moreover, in some embodiments, the fresh air volume is much greater than the exhaust air volume, and the length relationship between the fresh air diffusion section 805 and the exhaust air diffusion section 905 matches the air volume relationship.

[0258] In some embodiments, the outer diameter D1 of the fresh air fan 6 is larger than the outer diameter D2 of the exhaust fan 7 to ensure that the fresh air volume is greater than the exhaust air volume.

[0259] Correspondingly, the fresh air volute 8 includes a first volute enclosure 812 surrounding the radially outer side of the fresh air fan 6, and the exhaust volute 9 includes a second volute enclosure 906 surrounding the radially outer side of the exhaust fan 7. The diameter of the first volute enclosure 812 is larger than the diameter of the second volute enclosure 906. This allows for a compact assembly, reducing the overall space occupied.

[0260] Moreover, the second volute enclosure 906 can provide more space on the radially outer side, allowing air to flow within the housing 1 on the radially outer side of the exhaust volute 9. This allows more air to enter the exhaust volute 9 when it draws in air from the exhaust inlet 901, which helps to increase the exhaust air volume.

[0261] In some embodiments, the fresh air inlet 801 is located below the body 1000 in the height direction, and the fresh air outlet 802 is located between the exhaust outlet 902 and the fresh air inlet 801 in the length direction of the body 1000. This arrangement results in a compact connection between the fresh air outlet 802, the exhaust outlet 902, and the fresh air inlet 801, which helps to reduce the overall size.

[0262] In some embodiments, as shown in FIG1, a housing air outlet 105 is provided on the housing 1, which corresponds to the fresh air outlet 802. As shown in FIG3, the wall-mounted air conditioner 10000 further includes an expansion pipe 19 connected between the housing air outlet 105 and the fresh air outlet 802, wherein the flow area of ​​the expansion pipe 19 increases in the direction toward the housing air outlet 105. That is, the expansion pipe 19 causes the fresh air outlet to undergo a second expansion process, thereby further increasing the fresh air pressure and further increasing the air supply range.

[0263] For example, the exhaust outlet 902 and the fresh air inlet 801 are located below the main body 1000 and close to the rear side, so that the connection will not interfere too much with the expansion pipe 19.

[0264] In some embodiments, the dimension L3 of the housing air outlet 105 (as shown in Figure 1) along the length of the main body 1000 is greater than the sum of the thicknesses of the fresh air fan 6 and the exhaust fan 7. Here, as shown in Figure 12, the thickness of the fresh air fan 6 along the length of the main body 1000 is h1, and the thickness of the exhaust fan 7 along the length of the main body 1000 is H20. The sum of h1 and H20 is less than the length L3 of the housing air outlet 105. This design allows the housing air outlet 105 to be longer along the length of the main body 1000, fully utilizing the space provided in this direction by the bidirectional ventilation assembly. This facilitates elongating the fresh air outlet in this direction, increasing the width of the fresh air outlet, and allowing fresh air to be delivered to a wider area.

[0265] In some embodiments, as shown in Figure 11, the total axial thickness of the exhaust fan 7, including the exhaust impeller 71 and the exhaust blades 72, is h2. As shown in Figure 12, the total axial thickness of the fresh air fan 6, including the fresh air impeller 61 and the fresh air blades 62, is h1. For example, h2 < h1. This configuration ensures that the fresh air volume is greater than the exhaust air volume while increasing the axial thickness of the main body of the fresh air fan 6, resulting in greater structural strength and the ability to withstand greater torque. Since the exhaust fan 7 requires less airflow, the smaller axial thickness of its main body allows for a reduction in exhaust airflow and also reduces the axial dimensions of the bidirectional ventilation assembly.

[0266] In some embodiments, as shown in FIG10, the total axial thickness of the stator 51, rotor 52, and motor housing 53 is h3. The exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72. The exhaust blades 72 are located on the outer edge of the exhaust wheel 71 and extend along the axial direction of the exhaust wheel 71. The total axial thickness of the exhaust wheel 71 and exhaust blades 72 is h2. This satisfies the condition that h3 > h2. It is understood that the second motor 5 needs to drive both the fresh air fan 6 and the exhaust fan 7 simultaneously. Although the exhaust airflow is designed to be relatively small, the fresh airflow is designed to be relatively large. Therefore, the total axial thickness of the stator 51, rotor 52, and motor housing 53 is set to be greater than the axial thickness of the main body of the exhaust fan 7 to ensure that the second motor 5 can support the rotation of both fans and improve the supporting force of the second motor 5.

[0267] For example, the exhaust fan 7 also includes a protrusion 74 provided on the exhaust wheel 71. The center of the protrusion 74 is located on the axis of the exhaust fan 7, and the protrusion 74 extends relative to the exhaust wheel 71 toward the fresh air fan 6, so that the side of the protrusion 74 near the second motor 5 forms a receiving groove VO7 for the second motor 5, and at least a portion of the stator portion 51 and at least a portion of the rotor portion 52 are accommodated in the receiving groove VO7.

[0268] In some embodiments, the total axial thickness of the stator 51, rotor 52, and motor housing 53 is h3, and the total axial thickness of the fresh air impeller 61 and fresh air blades 62 on the fresh air fan 6 is h1, where h1 > h3. This ensures a large fresh air volume without requiring the second motor 5 to occupy too much duct space.

[0269] In some embodiments, as shown in Figures 11 and 14, the exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72, the exhaust blades 72 being located at the outer edge of the exhaust wheel 71 and extending along the axial direction of the exhaust wheel 71 toward a direction away from the fresh air fan 6.

[0270] Referring to Figures 5 and 15, the fresh air volute 8 includes a first volute 81 and a second volute 82. The first volute 81 is located on the side of the exhaust volute 9 facing the heat exchange fan 41 and is detachably connected to the exhaust volute 9. The second volute 82 is located on the side of the first volute 81 facing the heat exchange fan 41 and is detachably connected to the first volute 81. The first volute 81 is located between the exhaust volute 9 and the second volute 82.

[0271] Referring to FIG14, the first volute 81 includes a first volute end plate 811 and a first volute surrounding plate 812, the first volute surrounding plate 812 extending along the edge of the first volute end plate 811 toward the heat exchange fan 41.

[0272] For example, a recess 813 is formed in the central region of the first volute end plate 811 facing into the fresh air fan 6, and a perforation 814 is provided in the center of the recess 813. At least a portion 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.

[0273] In some embodiments of this disclosure, the fresh air volute 8 is divided into at least a first volute 81 and a second volute 82 along the axial direction and processed separately. This reduces the difficulty of manufacturing and assembly, and the separate manufacturing of such a complex housing facilitates quality control. The first volute 81 is detachably connected to the exhaust volute 9, and the second volute 82 is detachably connected to the first volute 81, which facilitates assembly and subsequent adjustment and maintenance.

[0274] A protrusion 74 is provided at the center of the exhaust fan 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 forms 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 of the second motor 5, by being assembled in the protrusion 74, occupies more of the exhaust air duct V02 and less of the fresh air duct V01, which matches the design that the fresh air volume is greater than the exhaust air volume. Only the output shaft 532 passes through the first volute end plate 811, which helps to seal the air, reduces the probability of fresh air and exhaust air flowing between each other, and reduces airflow disturbance.

[0275] In some embodiments, to enhance the reliability of the wall-mounted air conditioner 10000, the external dimensions of the main body 1000 are strictly controlled. This not only minimizes the gaps between internal parts, making them less prone to loosening, but also allows for shorter air ducts and a smaller casing 1, thereby reducing the overall weight of the main body 1000 and making it appear thinner and lighter.

[0276] When controlling the dimensions of the main body 1000, the key is to reduce the structural dimensions of the bidirectional ventilation assembly. The most important thing to ensure in the bidirectional ventilation assembly is that the second motor 5 can output sufficient power to meet the requirements of exhaust air volume and fresh air volume. Therefore, the thickness of the second motor 5, especially the total axial thickness h3 of the stator 51, rotor 52 and motor housing 53, needs to be large enough. The total axial thickness h3 of the stator 51, rotor 52 and motor housing 53 is greater than the axial thickness h2 of the main body of the exhaust fan 7.

[0277] After the second motor 5 occupies a certain thickness, in order to avoid the structural size of the bidirectional ventilation assembly from being excessively expanded, when optimizing the exhaust fan 7, a protrusion 74 is provided at the center of the exhaust wheel 71. The protrusion 74 extends relative to the exhaust wheel 71 towards the fresh air fan 6, so that the side of the protrusion 74 near the second motor 5 forms a receiving groove V07 for the second motor 5. At least a part of the stator part 51 and at least a part of the rotor part 52 are accommodated in the receiving groove V07, and the central part of the first volute end plate 811 of the first volute 81 is formed into a recess 813 facing into the fresh air fan 6, so that at least a part of the protrusion 74 is located in the recess 813.

[0278] This configuration also helps to reduce the distance between the main body of the second motor 5 and the fresh air fan 6, thereby reducing the axial distance between the fresh air fan 6 and the main body 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 fresh air fan 6 and the exhaust fan 7 have a high degree of coaxiality and are not easy to shake, which can avoid wear and vibration caused by friction with the volute.

[0279] In some embodiments, referring to FIG8, the exhaust volute 9 and the fresh air volute 8 are connected, sharing a first volute end plate 811, which separates the fresh air duct V01 and the exhaust air duct V02. This arrangement eliminates the need for a gap between the exhaust volute 9 and the fresh air volute 8, further reducing the axial dimension of the bidirectional ventilation assembly and minimizing its space occupation within the wall-mounted air conditioner 10000, thus contributing to the overall slim and lightweight design of the wall-mounted air conditioner 10000.

[0280] For example, the first volute end plate 811 is a single-layer plate, which simplifies the structure and helps to reduce the overall axial dimension.

[0281] In some embodiments, referring to Figures 8, 11 and 14, the exhaust fan 7 includes an exhaust wheel 71 and at least one exhaust blade 72. The exhaust wheel 71 is coaxially arranged with the second motor 5 and connected to the motor housing 53 of the second motor 5.

[0282] At least one exhaust blade 72 includes multiple exhaust blades 72, which are disposed on the exhaust wheel 71 and extend in a direction away from the fresh air fan 6. The multiple exhaust blades 72 are arranged circumferentially on the exhaust wheel 71. For example, the exhaust fan 7 includes a single layer of centrifugal blades, so that the exhaust fan 7 has a simple structure and low cost while meeting the requirements of small air volume. Moreover, the blade cylinder formed by the exhaust blades 72 arranged circumferentially along the exhaust wheel 71 is open on the side facing the axial air intake end, which facilitates airflow intake, reduces air intake resistance, and ensures the intake air volume of the exhaust.

[0283] In some embodiments, referring to Figures 8, 12, and 14, 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 connected to the output shaft 532 of the second motor 5. The fresh air blades 62 include a first fresh air blade 621, which extends from the fresh air impeller 61 in a direction away from the exhaust fan 7. The blade tube formed by the circumferential arrangement of the first fresh air blades 621 is open on the side facing the axial air intake end, which facilitates airflow intake, reduces airflow resistance, and ensures the intake volume of fresh air.

[0284] For example, referring to Figures 8, 12, and 14, the fresh air blade 62 may include a second fresh air blade 622, which extends from the fresh air impeller 61 toward the direction of the exhaust fan 7. Thus, the fresh air fan 6 includes double-layered centrifugal blades, and this double-layered centrifugal blade design helps increase the overall structural strength of the centrifugal fan while meeting high airflow requirements.

[0285] In some embodiments, in the axial direction of the fresh air fan 6, the length h12 of the second fresh air blade 622 is less than the length h11 of the first fresh air blade 621.

[0286] Here, the first fresh air blade 621 faces the axial air intake end, thus its axial length is greater, which is beneficial for obtaining a larger fresh air intake volume. The shorter second fresh air blade 622 helps to supplement the fresh air intake. Furthermore, the longer first fresh air blade 621 on the windward side helps to reduce noise while ensuring sufficient fresh air volume.

[0287] In some embodiments, as shown in FIG13, a disc hole 612 is formed on the fresh air disc 61, and one side of the second fresh air blade 622 can draw in air through the disc hole 612. The distance from the disc hole 612 to the center of the fresh air disc 61 is less than the distance from the fresh air blade 62 to the center of the fresh air disc 61.

[0288] For example, the disc hole 612 is closer to the center of the fresh air disc 61 than the fresh air blade 62. This is beneficial for the second fresh air blade 622 to guide the airflow axially into the space where the second fresh air blade 622 is located when it draws air in from the disc hole 612, thus reducing the turbulence caused by competing with the first fresh air blade 621 for airflow.

[0289] In some embodiments, referring to Figures 5, 8, and 15, the second volute 82 includes a second volute half 821 and a fan shroud 822. The second volute half 821 is located on the side of the first volute 81 facing the heat exchange fan 41 and is detachably connected to the first volute 81. An axial ventilation port 8211 is provided at the radial center of the second volute half 821. 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 facing the axial ventilation port 8211. The second volute half 821 and the first volute 81 together define a fresh air outlet 802.

[0290] The fan cover 822 is located on the side of the second volute half 821 facing the heat exchange fan 41, and is detachably connected to the second volute half 821. Referring to Figure 8, the cavity enclosed by the fan cover 822 and the second volute half 821 is the fresh air cavity V012, and the fan cover 822 and the second volute half 821 enclose the fresh air inlet 801.

[0291] With this configuration, a fresh air cavity V012 is formed at the air inlet of the fresh air fan 6. The fresh air cavity V012 can cover the axial air inlet of the fresh air fan 6. The fresh air cavity V012 can contain air, allowing air to enter the fresh air fan 6 vertically along the axial direction from the fresh air cavity V012, thereby improving the air intake efficiency of the fresh air fan 6 and reducing air intake loss.

[0292] For example, the fan shroud 822 is located on the side of the second volute half 821 facing the indoor heat exchanger 2, thus separating the volute cavity V011 from the indoor heat exchanger 2. When the indoor heat exchanger 2 is cooling, it can absorb heat from the fresh air cavity V012, lowering the fresh air temperature. Due to the separating effect of the fan shroud 822, the distance between the indoor heat exchanger 2 and the volute cavity V011 is greater, reducing the ability of the cooling capacity generated by the indoor heat exchanger 2 to lower the air temperature inside the volute cavity V011, making it less likely for the air inside the volute cavity V011 to become supercooled and condensate.

[0293] In this way, even if the incoming fresh air is cooled, it will not become too cold and produce condensation. Furthermore, if condensation occurs in the fresh air cavity V012, the condensate is more likely to remain in V012 and less likely to enter the volute cavity V011 and be blown into the room, thus avoiding water blowing from the fresh air system. When the indoor heat exchanger 2 is heating, it absorbs the cold air from the fresh air cavity V012, raising the temperature of the fresh air. The heated air then enters the volute cavity V011 and mixes thoroughly, resulting in warmer hot air being blown out of the fresh air system.

[0294] In some embodiments, referring to FIG3, the wall-mounted air conditioner 10000 further includes a purification component 11. Referring to FIG8, the purification component 11 is disposed in the fresh air duct V01 and is used to purify the fresh air blown into the room and improve the cleanliness of the indoor air.

[0295] For example, the purification component 11 is installed inside the fresh air cavity V012, that is, the purification component 11 is located at the axial air intake end of the fresh air fan 6. The 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 be blown through the purification component 11, and then enter the room from the fresh air outlet 802.

[0296] In this way, the fresh airflow can blow almost vertically over the purification component 11, further reducing the consumption of fresh air intake and thus increasing the fresh air volume. Moreover, when the indoor heat exchanger 2 is in cooling mode, causing condensation to form in the fresh air, the condensation can remain on the purification component 11 as the air flows through it, further preventing water from being blown out when the fresh air device is venting.

[0297] In some embodiments, the purification component 11 is connected to the second volute 82, which facilitates the assembly of the purification component 11 and prevents it from interfering with the fresh air fan 6.

[0298] For example, as shown in Figure 15, the purification component 11 includes a filter 111, which covers the axial vent 8211. The filter 111 covers the entire air intake end of the fresh air fan 6, providing a large coverage area and excellent filtration. The filter 111 helps ensure sufficient contact area with the flowing air, while also being lightweight and producing low noise. For example, the filter 111 may be made of HEPA mesh, thus possessing strong adsorption capacity and excellent dust filtration efficiency.

[0299] For example, filter 111 is plate-shaped, so filter 111 is relatively thin and will not take up too much space when placed in the two-way ventilation assembly.

[0300] For example, filter 111 is square, which makes it easy to position and install filter 111.

[0301] In some embodiments, the filter 111 is a square mesh, and the side length of the filter 111 is greater than the diameter of the axial vent 8211. The square mesh is easy to position during fixing, does not easily shake after fixing, and is easy to process with minimal processing waste. By making the side length of the filter 111 greater than the diameter of the axial vent 8211, all fresh air entering the axial vent 8211 can flow through the filter 111, resulting in high filtration cleanliness.

[0302] In some embodiments, referring to FIG8, a portion of the fresh air cavity V012 constitutes an empty cavity V0121, the cavity V0121 being located on the side of the purification component 11 away from the fresh air fan 6, and the fresh air inlet 801 communicating with the cavity V0121.

[0303] In other words, the purification component 11 is installed in the fresh air cavity V012 near the fresh air fan 6, and the part of the fresh air cavity V012 away from the fresh air fan 6 is the cavity V0121. That is, the cavity V0121 is 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 is running, the cavity V0121 is in a negative pressure state, so that the airflow can automatically flow into the cavity V0121 from the fresh air inlet 801, reducing the air flow resistance.

[0304] Cavity V0121 is equivalent to the air intake negative pressure chamber of the fresh air fan 6. The design of the air intake negative pressure chamber has many advantages:

[0305] I. Improve air intake efficiency. For example, by setting up a negative pressure chamber to increase the buffer space on the intake side of the fresh air fan 6, it is easier for the fresh air fan 6 to draw in air, thereby increasing the air intake volume of the fresh air fan 6. Moreover, the existence of the negative pressure chamber allows the fresh air to be buffered and adjusted in the negative pressure chamber before entering the fresh air fan 6, reducing fluctuations and turbulence in the fresh air flow, which is beneficial to improving the air intake stability of the fresh air fan 6. Without the cavity V0121 and without the buffer space, the flow resistance increases, and the operating power consumption of the fresh air fan 6 will increase.

[0306] 2. Optimize airflow distribution. For example, the negative pressure chamber can buffer and guide the airflow, which is beneficial for drawing fresh air into the fan 6 along the axial direction.

[0307] Third, reduce airflow impact and absorb noise.

[0308] In this way, while increasing the air intake of the fresh air device, it also improves the overall reliability and stability of the air intake.

[0309] In some embodiments, the fan shroud 822 forms a positioning protrusion 8221 on the side facing the indoor heat exchanger 2. The base 3 has an end plate 31 at one end near the fan shroud 822, and a positioning notch 311 is formed on the end plate 31. The positioning protrusion 8221 and the positioning notch 311 cooperate. That is, as shown in FIG6, on the side of the fan shroud 822 facing the indoor heat exchanger 2, the part where the positioning protrusion 8221 is located is the first positioning surface F1, and the part without the positioning protrusion 8221 is the second positioning surface F2. After the positioning protrusion 8221 and the positioning notch 311 cooperate, the end plate 31 is located between the first positioning surface F1 and the second positioning surface F2.

[0310] The positioning protrusion 8221 and the positioning notch 311 work together to position the bidirectional ventilation component and bring the fresh air volute 8 and the indoor heat exchanger 2 closer together. The structure of the positioning notch 311 is not limited. For example, in the example shown in Figure 18, the positioning notch 311 is provided through the thickness direction of the end plate 31. The positioning notch 311 is equivalent to a notch on the end plate 31. After the positioning protrusion 8221 and the positioning notch 311 work together, the positioning protrusion 8221 fills the notch on the end plate 31. Another example is that the positioning notch 311 is a groove on the side of the end plate 31 facing the fresh air volute 8, and the groove is not through. In this case, the positioning protrusion 8221 is equivalent to filling the groove.

[0311] By bringing the fresh air volute 8 and the indoor heat exchanger 2 closer together, the cooling or heating energy of the indoor heat exchanger 2 can be absorbed by the fresh air inside the fresh air volute 8, making the incoming fresh air closer to room temperature and more gentle.

[0312] By bringing the fresh air volute 8 and the indoor heat exchanger 2 closer together, and even in some designs, at least a portion of the positioning protrusion 8221 can overlap at least partially with the indoor heat exchanger 2 laterally. This reduces the overall lateral dimension, preventing the wall-mounted air conditioner 10000 from becoming too long.

[0313] For example, at least a portion of the cavity V0121 is located within the positioning convex 8221, which allows the positioning convex 8221 to be thinned, its weight reduced, and the internal space utilization of the positioning convex 8221 improved.

[0314] In some embodiments, the fresh air volute 8 is also provided with an installation port 803, and the purification component 11 is detachably assembled into the installation port 803. This facilitates the removal of the purification component 11 when it is damaged or saturated, making it convenient for maintenance or replacement.

[0315] For example, as shown in Figure 15, the mounting port 803 is formed between the fan cover 822 and the second volute half 821. The purification component 11 can be detachably assembled into the fresh air cavity V012 through the mounting port 803. This allows the mounting port 803 to be set to a larger size, facilitating the installation of larger purification components 11. When the mounting port 803 is larger, it is formed by the fan cover 822 and the second volute half 821, with open half-openings on both sides, facilitating processing or demolding and resulting in a low scrap rate.

[0316] For example, as shown in Figure 3, in the front-rear direction of the main body, the mounting port 803 is located on the front side of the main body 1000. When the purification component 11 is disassembled, it can be free from interference from the pipes connected to the fresh air inlet 801 and the exhaust outlet 902, thus facilitating disassembly. For example, the front side of the housing 1 is provided with an openable panel (not shown in the figure). When the panel is opened or rotated upward, the mounting port 803 can be exposed, facilitating the disassembly of the purification component 11.

[0317] It is also possible that in some designs, the mounting port 803 will be located at the bottom of the main body 1000.

[0318] In some embodiments, as shown in FIG6, a purification air inlet 804 for connecting to the indoor environment is formed on the fresh air volute 8. The rotation of the fresh air fan 6 allows indoor air to enter the fresh air volute 8 through the purification air inlet 804 for purification by the purification component 11, and allows the indoor air entering the fresh air volute 8 to enter the room through the fresh air outlet 802. This allows indoor air to enter the fresh air duct V01 from the purification air inlet 804, be purified, and then enter the room through the fresh air outlet 802.

[0319] This design allows for air circulation and purification when indoor air is polluted. This eliminates the need to introduce fresh outdoor air, thus improving air quality. Because no fresh outdoor air is introduced, the purification process avoids sudden drafts of unheated cold or hot outdoor air, preventing discomfort caused by rapid temperature changes.

[0320] For example, the accommodating cavity V1 within the housing 1, through internal structural cooperation, forms two mutually non-ventilated chambers, a first chamber V11 and a second chamber V12, as shown in Figure 2. The first chamber V11 and the second chamber V12 can be directly formed by the housing 1; for example, a partition can be integrally formed within the housing 1 to divide the accommodating cavity V1 into the first chamber V11 and the second chamber V12. Alternatively, as shown in Figure 4, the end plate 31 on the base 3 cooperates with the fresh air volute 8, preventing ventilation from both sides.

[0321] At this time, at least a portion of the second motor 5, the exhaust fan 7, and the exhaust volute 9 are located within the second chamber V12. The housing 1 is provided with a housing air inlet 103 corresponding to the second chamber V12, and a purification air inlet 804 is located within the second chamber V12.

[0322] The rotation of the fresh air fan 6 allows indoor air to enter the second chamber V12 through the air inlet 103 of the casing, and then enters the fresh air volute 8 through the purification air inlet 804 for purification by the purification component 11. Indoor air entering the fresh air volute 8 can then enter the room through the fresh air outlet 802. This allows the purification air inlet 804 to be concealed within the second chamber V12, improving the aesthetic appearance of the wall-mounted air conditioner 10000. Furthermore, no connecting pipes are needed between the purification air inlet 804 and the casing air inlet 103, reducing the number of parts, minimizing space requirements, and facilitating layout. For example, as shown in Figure 6, the purification air inlet 804 is located at the bottom of the fresh air volute 8 and faces downwards. It can be understood that the fresh air inlet 801 is located below the main body 1000, and both the fresh air inlet 801 and the purification air inlet 804 are located at the bottom of the fresh air volute 8 and face downwards, facilitating manufacturing. Moreover, only one of them needs to be open during use. At this point, both the fresh air inlet 801 and the purification air inlet 804 are placed at the bottom of the fresh air volute 8, making it convenient to centrally set up switches to select one of the air inlets to open, thus reducing the number of switches required.

[0323] In some embodiments, as shown in Figure 6, the air intake direction of the purification air inlet 804 is perpendicular to the length direction of the main body 1000. It is understood that by making the air intake direction of the purification air inlet 804 perpendicular to the length direction of the main body 1000, the air intake area of ​​the purification air inlet 804 is farther from the exhaust air inlet 901, avoiding excessive air intake energy consumption caused by the purification air inlet 804 and the exhaust air inlet 901 being too close. Furthermore, the different directions of the purification air inlet 804 and the exhaust air inlet 901 help to expand the negative pressure area, facilitating the inflow of a large amount of indoor air into the negative pressure area and ensuring the air volume of exhaust and fresh indoor air.

[0324] In some embodiments, as shown in FIG6, the wall-mounted air conditioner 10000 further includes a first switching valve 12 for switching between the fresh air inlet 801 and the purified air inlet 804. This allows for selective opening and closing of the fresh air inlet 801 and the purified air inlet 804. The specific structure of the first switching valve 12 is not limited here.

[0325] In some embodiments, as shown in FIG16, an indoor exhaust vent 903 for connecting to the room is formed on the exhaust volute 9. The rotation of the exhaust fan 7 can cause indoor air entering the exhaust volute 9 to be exhausted into the room through the indoor exhaust vent 903. That is to say, the exhaust device can also be set to internally circulate indoor air, promoting indoor air circulation without sending indoor air to the outside.

[0326] For example, as shown in Figure 16, the wall-mounted air conditioner 10000 also includes a second switching valve 15 for switching between the exhaust air outlet 902 and the indoor exhaust air outlet 903. This allows for selective opening and closing of the exhaust air outlet 902 and the indoor exhaust air outlet 903. The specific structure of the second switching valve 15 is not limited here.

[0327] In some embodiments, as shown in Figures 5 and 8, the exhaust volute 9 includes an air guide ring 91, and the area enclosed by the air guide ring 91 forms an exhaust air inlet 901. The air guide ring 91 can effectively collect dispersed airflow and converge it into a more concentrated airflow to be sent into the exhaust fan 7, making the air intake smoother and more efficient, and increasing the air intake volume of the exhaust fan 7.

[0328] Furthermore, the air guide ring 91, through its rationally designed shape and angle, allows airflow to enter the exhaust blades 72 of the exhaust fan 7 at the optimal angle, improving the working efficiency of the exhaust fan 7. When unstable airflow fluctuations are drawn in, the air guide ring 91 can stabilize the airflow, reducing turbulence and fluctuations, allowing the exhaust fan 7 to operate more smoothly. This can reduce noise and vibration, and extend the service life of the exhaust fan 7.

[0329] For example, the air guide ring 91 is cylindrical, and its diameter decreases in the direction towards the heat exchange exhaust fan 7. As the diameter of the air guide ring 91 decreases, the passage for air to flow through it narrows. According to fluid mechanics principles, at the same flow rate, a narrower passage increases the airflow velocity, thereby increasing the wind speed and air volume. The reduced diameter of the air guide ring 91 also helps to concentrate the relatively dispersed airflow upstream, allowing the airflow to blow directly onto the center of the exhaust fan 7. The concentrated airflow is more energy-efficient when driven radially by the exhaust blades 72, and the concentrated airflow also contributes to the stability of the airflow.

[0330] For example, as shown in Figure 8, the exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72. The exhaust wheel 71 is connected to the motor housing 53 of the second motor 5, and the exhaust blades 72 are connected to the side of the exhaust wheel 71 away from the heat exchange fan 41. Multiple exhaust blades 72 are arranged circumferentially.

[0331] As shown in Figures 8 and 11, the edge of the exhaust blade 72 furthest from the exhaust wheel 71 is the blade side edge 721. A portion of the blade side edge 721 is closer to the exhaust wheel 71 than the remaining portion. All exhaust blades 72 form side edge recesses 723 where the distance to the blade side edge 721 decreases. The end of the air guide ring 91 is located within the side edge recess 723.

[0332] In other words, the exhaust blades 72 of the exhaust fan 7 are concave blades, and both the air guide ring 91 and the concave blades are recessed towards the fresh air fan 6. The air guide ring 91 partially enters the side edge recess 723 formed by the concave blades. With this configuration, the air guide ring 91 and the exhaust fan 7 can partially overlap in the axial direction, and there is no need to increase the axial dimension of the exhaust volute 9 while setting the air guide ring 91.

[0333] In some embodiments, as shown in FIG17, the blade side edge 721 includes a curved segment 7212, in the direction toward the axis of the exhaust fan 7, the distance between the curved segment 7212 and the exhaust wheel 71 decreases, and all exhaust blades 72 form a side edge recess 723 at the curved segment 7212. This arrangement, after the exhaust fan 7 rotates, results in the exhaust blades 72 forming a curved surface with a reduced diameter on the surface swept by the curved segment 7212, which facilitates airflow concentration towards the center and reduces energy loss caused by airflow disturbance.

[0334] In some embodiments, as shown in FIG17, the blade side edge 721 further includes a straight segment 7211, which is perpendicular to the axis of the exhaust fan 7 and is connected to the end of the curved segment 7212 away from the axis of the exhaust fan 7. That is, the axial dimension of the outer edge portion of the exhaust blade 72 is large, which can make full use of the space inside the exhaust duct VO2 to drive the airflow, which is conducive to the airflow gaining greater kinetic energy.

[0335] In some embodiments, the rotation surfaces of the blade side edges 721 of all exhaust blades 72 coincide, and the rotation surface is the surface swept by the blade side edge 721 around the axis of the exhaust fan 7. In this way, when the airflow flows axially toward the center of the exhaust fan 7, it will not generate too much radial turbulence due to individual exhaust blades 72 with inconsistent shapes sweeping it, thus improving the stability of the airflow.

[0336] For example, as shown in Figure 17, the axial distance between the guide ring 91 and the rotating surface is increased in the direction away from the axis of the exhaust fan 7. It is understandable that when the second motor 5 drives the exhaust fan 7 to rotate, the exhaust fan 7 will inevitably experience slight wobbling due to wear. The further away from the axis of the exhaust fan 7 it wobbles, the greater the wobbling amplitude. Therefore, increasing the axial distance between the guide ring 91 and the rotating surface in the direction away from the axis of the exhaust fan 7 helps reduce the risk of friction caused by the exhaust fan 7 contacting the guide ring 91 during wobbling.

[0337] In some embodiments, as shown in Figure 17, the axial dimension of the air guide ring 91 is Z1, satisfying 2mm ≤ Z1 ≤ 12mm. It is understandable that when the axial dimension Z1 of the air guide ring 91 is less than 2mm, the flow path is too short during airflow convergence, and the airflow enters the exhaust fan 7 before it has converged, resulting in a weak airflow convergence effect and easy airflow dispersion. The exhaust fan 7 then needs to consume more energy to guide the dispersed airflow to the center. Conversely, when the axial dimension Z1 of the air guide ring 91 is greater than 12mm, the air guide ring 91 occupies too much axial space within the exhaust volute 9, reducing the usable space for the exhaust fan 7 and thus decreasing the exhaust airflow. Therefore, limiting the axial dimension Z1 of the air guide ring 91 to between 2mm and 12mm ensures that while the air guide ring 91 converges the airflow, the exhaust fan 7 achieves sufficient exhaust airflow, thus achieving a large exhaust airflow with relatively low power consumption.

[0338] For example, the axial dimension Z1 of the air guide ring 91 can be 2mm, 3mm, 5mm, 8mm, 10mm, 12mm, etc.

[0339] In some embodiments, as shown in FIG17, the axial distance between the end of the air guide ring 91 and the exhaust blade 72 is Z2, which satisfies 1mm≤Z2≤5mm.

[0340] When the axial distance Z2 between the end of the guide ring 91 and the exhaust blade 72 is less than 1mm, the exhaust blade 72 is prone to hitting the guide ring 91 during rotation. This not only causes frictional losses, but the unbalanced force on the exhaust fan 7 after the collision may also cause greater shaking and more serious collisions. When the axial distance Z2 between the end of the guide ring 91 and the exhaust blade 72 is greater than 5mm, not only is the axial clearance between the end of the guide ring 91 and the exhaust blade 72 wasted, but the uncollected airflow can easily flow into the exhaust duct V02 from the axial clearance between the end of the guide ring 91 and the exhaust blade 72. In this way, the unworked airflow will crowd out the flow channel of the working airflow, reducing the operating efficiency of the exhaust fan 7.

[0341] Therefore, limiting the axial distance Z2 between the end of the air guide ring 91 and the exhaust blade 72 to between 1mm and 5mm helps to ensure the reliability and efficiency of the exhaust fan 7. For example, the axial distance Z2 between the end of the air guide ring 91 and the exhaust blade 72 can be 1mm, 2.5mm, 3mm, 3.5mm, 5mm, etc.

[0342] In some embodiments, as shown in FIG17, the wall-mounted air conditioner 10000 further includes: a fixed bracket 17, which is located at the exhaust air inlet 901 and connected to the exhaust volute 9, and the second motor 5 is mounted on the fixed bracket 17. In this way, the fixed position of the second motor 5 has a small axial distance from the fresh air fan 6 and the exhaust fan 7, and the bending moment borne by the second motor 5 during operation is small, which is beneficial to improving the rotational stability of the fresh air fan 6 and the exhaust fan 7.

[0343] For example, as shown in Figure 17, the fixed bracket 17 includes a bracket end plate 171 and a bracket surrounding plate 172. The bracket surrounding plate 172 extends along the edge of the bracket end plate 171 toward the exhaust fan 7. The bracket surrounding plate 172 is connected to the exhaust volute 9. A mounting cavity 174 is defined between the bracket surrounding plate 172 and the bracket end plate 171, and a portion of the second motor 5 is housed within the mounting cavity 174. In other words, the fixed bracket 17 provides the mounting cavity 174 with a simple structure, which not only increases the support area for the second motor 5 (i.e., both the bracket end plate 171 and the bracket surrounding plate 172 can support the second motor 5, improving the installation firmness of the second motor 5), but also protects the electronic connector at the end of the second motor 5.

[0344] For example, as shown in Figure 17, the bracket end plate 171 is provided with a wire hole 173. The wire hole 173 is fitted with a wire harness connected to the second motor 5, and the connection between the wire harness and the second motor 5 is located inside the mounting cavity 174. In this way, when the wire harness connected to the second motor 5 is introduced from the outside, the wire harness can be directly introduced from the side of the fixed bracket 17 away from the exhaust fan 7. Compared with the solution of leading the wire from other sides of the fixed bracket 17, the solution provided by some embodiments of this disclosure is advantageous in reducing the length of the wire harness, avoiding the wire harness being too long and easily getting stuck in the exhaust fan 7. Moreover, the connection between the wire harness and the second motor 5 is hidden in the mounting cavity 174, which is not only aesthetically pleasing, but also improves the reliability of the connection and avoids the connection being hit by foreign objects, which may cause poor contact.

[0345] In some embodiments, referring to FIG5, the wall-mounted air conditioner 10000 further includes an insulating sleeve 18, which is fitted onto the wiring harness and connected to the wiring hole 173. The insulating sleeve 18 provides buffer protection for the wiring harness at the connection point to the wiring hole 173, preventing leakage due to wear of the wiring harness when impacted. Furthermore, the insulating sleeve 18 can, to some extent, seal the wiring hole 173, reducing the entry of condensate and moisture into the mounting cavity 174 and minimizing the risk of moisture damage to the electronic connector at the end of the second motor 5.

[0346] For example, the vertical projection of the fixed bracket 17 on the axis of the exhaust fan 7 is completely within the vertical projection of the exhaust volute 9 on the axis of the exhaust fan 7.

[0347] As shown in Figure 8, the leftmost end of the fixed bracket 17 in the axial direction is p1, and the rightmost end is p2. The leftmost end of the exhaust volute 9 in the axial direction is q1, and the rightmost end is q2. Among these four vertical projection points on the axis of the exhaust fan 7, the projection point q1 coincides with the projection point p1, or the projection point q1 is located to the left of the projection point p1. The projection point q2 coincides with the projection point p2, or the projection point q2 is located to the right of the projection point p2.

[0348] This arrangement ensures that the fixed bracket 17 does not extend beyond the exhaust volute 9 in the axial direction, and that the fixed bracket 17 does not result in an additional increase in axial dimension, which helps to reduce the overall axial dimension.

[0349] In some embodiments, at least one of the fresh air fan 6 and the exhaust fan 7 includes: a disc and blades connected to the disc, wherein the connection between the blades and the disc is provided with a transition rounded corner structure.

[0350] For example, the exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72. The exhaust blades 72 are connected to the side of the exhaust wheel 71 away from the heat exchange fan 41, and there are multiple exhaust blades 72 arranged circumferentially. A rounded transition corner structure is provided at the connection between the exhaust blades 72 and the exhaust wheel 71. This reduces the concentrated stress at the connection between the exhaust blades 72 and the exhaust wheel 71, improving overall strength. Furthermore, when the airflow flows axially towards the exhaust wheel 71, the airflow can be guided by the rounded transition corner structure under pressure difference, resulting in less turbulence when the airflow changes direction, thus helping to reduce energy consumption.

[0351] For example, the fresh air fan 6 includes a fresh air impeller 61 and fresh air blades 62. The fresh air blades 62 are connected to the fresh air impeller 61 and are multiple in number and arranged circumferentially. A rounded transition corner structure is provided at the connection between the fresh air blades 62 and the fresh air impeller 61. This reduces the concentrated stress at the connection point and improves the overall strength. Furthermore, when the airflow flows axially towards the fresh air impeller 61, the airflow can be guided by the rounded transition corner structure under pressure difference, flowing more smoothly towards the fresh air blades 62, thereby helping to reduce energy consumption.

[0352] In some embodiments, the accommodating cavity V1 within the housing 1, through internal structural cooperation, forms two mutually non-ventilated first chambers V11 and second chamber V12, as shown by the dashed box in Figure 2. The indoor heat exchanger 2 and heat exchange fan 41 are located within the first chamber V11, and the bidirectional ventilation assembly is at least partially located within the second chamber V12. The heat exchange air inlet 101 and heat exchange air outlet 102 on the housing 1 are corresponding to the first chamber V11. A housing air inlet 103 may be provided on the housing 1, connecting to the second chamber V12. A housing air outlet 105 may also be provided on the housing 1, connecting to the second chamber V12.

[0353] For example, the housing 1 is provided with a housing air inlet 103 corresponding to the second chamber V12. When the exhaust fan 7 rotates, the indoor air can enter the second chamber V12 from the housing air inlet 103 and then enter the exhaust volute 9 from the exhaust air inlet 901.

[0354] With this configuration, the airflow inside the second chamber V12 will not be affected by the heat exchange fan 41. The exhaust air inlet 901 can directly draw air from the second chamber V12. There is no need to connect the casing air inlet 103 and the exhaust air inlet 901, which not only reduces the space occupied by the pipe, but also allows for flexible selection of the position of the casing air inlet 103.

[0355] In some embodiments, a vertically placed partition plate can be provided inside the housing 1 to separate the first chamber V11 and the second chamber V12. Alternatively, the separation of the first chamber V11 and the second chamber V12 can be achieved by the fresh air volute 8 or the base 3, or a combination of both.

[0356] In some embodiments, as shown in Figures 6, 4, and 19, the fresh air volute 8 has a positioning protrusion 8221 on the side facing the indoor heat exchanger 2. The base 3 has an end plate 31 adjacent to the fresh air volute 8, and a positioning notch 311 is formed on the end plate 31. The positioning protrusion 8221 and the positioning notch 311 cooperate. The positioning notch 311 extends through the end plate 31 along the length of the main body 1000. After the positioning protrusion 8221 and the positioning notch 311 cooperate, the positioning protrusion 8221 fills the notch on the end plate 31, thereby dividing the accommodating cavity V1 into a first chamber V11 and a second chamber V12, facilitating the separation of the air inlet and outlet on both sides of the end plate 31 so that they do not interfere with each other.

[0357] In some embodiments, as shown in FIG19, the wall-mounted air conditioner 10000 further includes a bearing seat 20 disposed on the base 3, the bearing seat 20 being supported and connected to one end of the heat exchange fan 41. A positioning protrusion 8221 partially overlaps with the bearing seat 20 in the length direction of the main body 1000. That is, the positioning protrusion 8221 utilizes the radially outer space of the bearing seat 20, improving structural compactness and reducing the overall lateral dimension, thus preventing the wall-mounted air conditioner 10000 from becoming excessively long.

[0358] Furthermore, it can bring the distance between the fresh air volute 8 and the indoor heat exchanger 2 closer, so that the cooling or heating capacity of the indoor heat exchanger 2 can be absorbed by the fresh air inside the fresh air volute 8, thereby making the blown-in fresh air closer to the room temperature and more gentle.

[0359] For example, as shown in Figures 6 and 14, the lower rear corner of the positioning protrusion 8221 forms a clearance notch 82211, and the bearing housing 20 extends into the clearance notch 82211. The lower front corner of the positioning protrusion 8221 is located on the front side of the bearing housing 20. In this way, the heat exchange fan 41 is positioned relatively close to the rear side, and with sufficient space on the front side of the heat exchange fan 41, the volute air duct V03 can easily form a diffuser air duct for the heat exchange fan 41, thereby increasing the air delivery range of the heat exchange fan 41. Furthermore, the positioning protrusion 8221, partially located on the front side of the bearing housing 20, fills the front space of the bearing housing 20, improving space utilization.

[0360] Furthermore, in a conventional wall-mounted air conditioner 10000, the indoor heat exchanger 2 is a two-fold or three-fold heat exchanger, with part of the indoor heat exchanger 2 positioned above the heat exchange fan 41 and part positioned in front of the heat exchange fan 41. In this case, the shape of the positioning protrusion 8221 matches the shape of the indoor heat exchanger 2, allowing the positioning protrusion 8221 to more fully absorb the cold or heat from the indoor heat exchanger 2, thereby improving heat exchange efficiency.

[0361] In some embodiments, as shown in FIG18, the base 3 includes a first support frame 301 and a second support frame 302 arranged sequentially along the length of the main body 1000, with an end plate 31 located between the first support frame 301 and the second support frame 302. A volute air duct V03 is formed on the first support frame 301, the indoor heat exchanger 2 and the heat exchange fan 41 are mounted on the first support frame 301, and the fresh air volute 8 and the exhaust volute 9 are mounted on the second support frame 302. That is, the bidirectional air exchange assembly is also mounted on the base 3. The base 3 supports the above structure, ensuring strong overall integrity and helping to avoid excessive vibration caused by loose parts.

[0362] For example, as shown in Figures 5 and 6, at least one of the fresh air volute 8 and the exhaust volute 9 has a first hanging ear 806 at its front end, and at least one of the fresh air volute 8 and the exhaust volute 9 has a second hanging ear 807 at its rear end. The first hanging ear 806 and the second hanging ear 807 are respectively hung on the second bracket 302 and are detachably connected to the second bracket 302. For example, the fresh air volute 8 and the exhaust volute 9 are placed on the second bracket 302, and then the first hanging ear 806 and the second hanging ear 807 are hung on the front and rear ends of the second bracket 302 respectively. Then, the first hanging ear 806 and the second hanging ear 807 are fixed to the second bracket 302 with mounting bolts. This arrangement not only makes assembly easy, but also ensures that even if the bolts loosen, the fresh air volute 8 and the exhaust volute 9 are supported by the first hanging ear 806 and the second hanging ear 807 and will not fall off.

[0363] For example, the first lug 806 and the second lug 807 have an angle between them, so that the contact surfaces of the first lug 806 and the second base 302, and the contact surfaces of the second lug 807 and the second base 302 have an angle, thus achieving double-sided limiting, making it less prone to loosening, and with higher positioning accuracy.

[0364] For example, as shown in Figure 18, the bottom of the second frame 302 is provided with a mating port 3021, into which the lower ends of the fresh air volute 8 and the exhaust volute 9 are inserted. This not only greatly reduces the weight of the second frame 302, but also improves the impact and vibration resistance by utilizing the lower ends of the fresh air volute 8 and the exhaust volute 9 enclosed by the second frame 302.

[0365] In some embodiments, the housing 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 housing air inlet 103 located on the top wall of the main body 1000 is not easily seen by people, thus maintaining the aesthetic appearance of the main body 1000.

[0366] In some embodiments, the wall-mounted air conditioner 10000 further includes an electrical control box 13, which is located at one lateral end of the heat exchange fan 41, and the bidirectional ventilation assembly is located at the other lateral end of the heat exchange fan 41. That is, the bidirectional ventilation assembly and the electrical control box 13 are located at opposite lateral ends of the heat exchange fan 41, and the operation of the bidirectional ventilation assembly has minimal interference with the electrical control box 13.

[0367] In some embodiments, the wall-mounted air conditioner 10000 further includes an electrical control box 13, which is located at the same lateral end of the heat exchange fan 41 as the bidirectional ventilation assembly, with the electrical control box 13 located on top of the bidirectional ventilation assembly. This arrangement further facilitates control over the length of the wall-mounted air conditioner 10000.

[0368] It should be noted that any one of the technical solutions disclosed in this disclosure can solve one or more of the above-mentioned technical problems and achieve a certain disclosure purpose to a certain extent; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above-mentioned technical problems and achieve a certain disclosure purpose; some technical disclosures can also be selected and combined into an overall solution, while adopting related technologies and deteriorating solutions, but the deterioration trend can be compensated by the means of this technical disclosure, and the overall solution can solve one or more of the above-mentioned technical problems and achieve a certain disclosure purpose to a certain extent; each technical disclosure combined into a complete technical solution constitutes an organic and indivisible overall solution, which solves the technical problems and achieves a certain disclosure purpose as a whole.

[0369] Any technical disclosure in this disclosure, as well as the recombination of multiple technical disclosures, can form a complete technical solution and solve one or more of the aforementioned technical problems, thereby achieving the purpose of disclosure. All of these are part of the content of this disclosure and are directly and unambiguously determined based on the content of this disclosure.

[0370] Those skilled in the art will understand that the scope of this disclosure is not limited to the embodiments described above, and that modifications and substitutions can be made to certain elements of the embodiments without departing from the spirit of this disclosure. The scope of this disclosure is limited by the appended claims.

Claims

1. A wall-mounted air conditioner (10000), comprising: Body (1000), said body (1000) includes: The housing (1) has an accommodating cavity (V1) inside. The housing (1) has a heat exchange inlet (101) and a heat exchange outlet (102). In the height direction of the main body (1000), the heat exchange inlet (101) is located above the heat exchange outlet (102). An indoor heat exchanger (2) is disposed within the accommodating cavity (V1); The base (3) is disposed in the accommodating cavity (V1) and a volute air duct (V03) is formed thereon; A heat exchange fan (41) is installed in the volute duct (V03) and is located on the side of the indoor heat exchanger (2) away from the heat exchange air inlet (101); The first motor (42) is disposed in the accommodating cavity (V1) and located at one end of the body (1000) along its length, for driving the heat exchange fan (41) to rotate so that the air inside the air conditioner exchanges heat with the indoor space; This also includes: A second motor (5) is disposed within the accommodating cavity (V1), and the second motor (5) is located at the other end of the length direction of the main body (1000). The second motor (5) is an external rotor motor, and the second motor (5) includes: Stator section (51), wherein the stator section (51) has a wound coil; The rotor portion (52) is arranged radially around the stator portion (51) outside the stator portion (51); Motor housing (53), which is fixedly connected to the rotor portion (52); Output shaft (532), which is fixedly connected to the motor housing (53); Fresh air fan (6), the fresh air fan (6) is a centrifugal fan with axial air intake and radial air outlet, the fresh air fan (6) is located on the side of the heat exchange fan (41) away from the first motor (42), the fresh air fan (6) is located between the heat exchange fan (41) and the motor housing (53), and the fresh air fan (6) is connected to the output shaft (532) of the second motor (5); The exhaust fan (7) is a centrifugal fan with axial air intake and radial air exhaust. 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 outer side of the motor housing (53). The exhaust fan (7) is fixedly connected to the motor housing (53). In this case, the second motor (5) drives the fresh air fan (6) and the exhaust fan (7) to rotate synchronously when in operation; Fresh air volute (8), a fresh air duct (V01) is formed inside the fresh air volute (8), a fresh air fan (6) is installed inside the fresh air volute (8), and a fresh air inlet (801) and a fresh air outlet (802) are formed on the fresh air volute (8). The rotation of the fresh air fan (6) allows outdoor air to enter the fresh air volute (8) from the fresh air inlet (801), and allows outdoor air entering the fresh air volute (8) to enter the room from the fresh air outlet (802); Wherein, in the height direction of the main body (1000), the fresh air inlet (801) is located below the main body (1000); An 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). An 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). The rotation of the exhaust fan (7) allows indoor air to enter the exhaust volute (9) from the exhaust inlet (901) and allows indoor air entering the exhaust volute (9) to be discharged to the outside from the exhaust outlet (902). Wherein, in the height direction of the main body (1000), the exhaust outlet (902) is located below the main body (1000).

2. The wall-mounted air conditioner (10000) according to claim 1, wherein, The exhaust fan (7) forms a receiving groove (V07) at the radial center, and at least a portion of the stator (51) of the second motor (5), at least a portion of the rotor (52), and at least a portion of the motor housing (53) are housed in the receiving groove (V07).

3. The wall-mounted air conditioner (10000) according to claim 1, wherein, The fresh air outlet (802) is located directly in front of the main body (1000).

4. The wall-mounted air conditioner (10000) according to claim 1, wherein, The fresh air outlet (802) is located on the top of the main body (1000).

5. The wall-mounted air conditioner (10000) according to claim 1, wherein, The fresh air outlet (802) is located below the main body (1000) to guide fresh air forward and downward into the room.

6. The wall-mounted air conditioner (10000) according to claim 1, wherein, The exhaust air inlet (901) is formed on the exhaust volute (9), and the axial direction of the exhaust air inlet (901) is arranged along the length direction of the main body (1000).

7. The wall-mounted air conditioner (10000) according to claim 1, wherein, The housing (1) has a housing air inlet (103) at one end where the second motor (5) is located, and the housing air inlet (103) is located at the top of the main body (1000). The housing air inlet (103) and the exhaust air inlet (901) form a first ventilation duct (V04). The exhaust fan (7) rotates and drives indoor air to enter the first ventilation duct (V04) through the housing air inlet (103), and causes indoor air to enter the exhaust volute (9) through the exhaust air inlet (901).

8. The wall-mounted air conditioner (10000) according to claim 1, wherein, The housing (1) has a housing air inlet (103) at one end where the second motor (5) is located, and the housing air inlet (103) is located on the side of the main body (1000). The exhaust fan (7) rotates and drives indoor air to enter the interior of the housing (1) through the housing air inlet (103), and causes indoor air to enter the exhaust volute (9) through the exhaust air inlet (901).

9. The wall-mounted air conditioner (10000) according to any one of claims 1-7, wherein, The fresh air fan (6) includes: a fresh air wheel (61) and fresh air blades (62), the fresh air blades (62) are located on the outer edge of the fresh air wheel (61) and extend along the axial direction of the fresh air wheel (61), and the total thickness of the fresh air wheel (61) and the fresh air blades (62) in the axial direction is h1; The exhaust fan (7) includes an exhaust wheel (71) and exhaust blades (72). The exhaust blades (72) are located on the outer edge of the exhaust wheel (71) and extend along the axial direction of the exhaust wheel (71). The total thickness of the exhaust wheel (71) and the exhaust blades (72) in the axial direction is h2. Where h2 < h1.

10. The wall-mounted air conditioner (10000) according to any one of claims 1-7, wherein, The total axial thickness of the stator (51), the rotor (52), and the motor housing (53) is h3; The exhaust fan (7) includes an exhaust wheel (71) and exhaust blades (72). The exhaust blades (72) are located on the outer edge of the exhaust wheel (71) and extend along the axial direction of the exhaust wheel (71). The total thickness of the exhaust wheel (71) and the exhaust blades (72) in the axial direction is h2. The condition is satisfied that h3 > h2.

11. The wall-mounted air conditioner (10000) according to claim 1, wherein, The exhaust fan (7) includes an exhaust wheel (71) and exhaust blades (72), the exhaust blades (72) being located on the outer edge of the exhaust wheel (71) and extending along the axial direction of the exhaust wheel (71) in a direction away from the fresh air fan (6); The exhaust fan (7) further includes a protrusion (74) provided on the exhaust wheel (71). The center of the protrusion (74) is located on the axis of the exhaust fan (7), and the protrusion (74) extends relative to the exhaust wheel (71) toward the fresh air fan (6), so that the side of the protrusion (74) near the second motor (5) forms a receiving groove (V07) for the second motor (5). At least a portion of the stator (51) and at least a portion of the rotor (52) are accommodated in the receiving groove (V07); The fresh air volute (8) includes: The first volute (81) is located on the side of the exhaust volute (9) facing the heat exchange fan (41) and is detachably connected to the exhaust volute (9). The second volute (82) is located on the side of the first volute (81) facing the heat exchange fan (41) and is detachably connected to the first volute (81). The first volute (81) is located between the exhaust volute (9) and the second volute (82). The first volute (81) includes a first volute end plate (811) and a first volute surrounding plate (812), the first volute surrounding plate (812) extending along the edge of the first volute end plate (811) toward the heat exchange fan (41); The central portion of the first volute end plate (811) forms a recess (813) facing into the fresh air fan (6), and the center of the recess (813) is provided with a perforation (814). At least a portion of the protrusion (74) is located within the recess (813), and the output shaft (532) is connected to the fresh air fan (6) through the perforation (814).

12. The wall-mounted air conditioner (10000) according to claim 1, wherein, The total axial thickness of the stator (51), the rotor (52), and the motor housing (53) is h3; The fresh air fan (6) includes a fresh air impeller (61) and fresh air blades (62). The fresh air blades (62) are located on the outer edge of the fresh air impeller (61) and extend along the axial direction of the fresh air impeller (61). The total thickness of the fresh air impeller (61) and the fresh air blades (62) in the axial direction is h1, where h1 > h3.

13. The wall-mounted air conditioner (10000) according to claim 1, wherein, The area of ​​the outer curved surface of the fresh air fan (6) is S1, and the area of ​​the outer curved surface of the exhaust fan (7) is S2. S1 = ΠD1×h1, where D1 is the outer diameter of the fresh air fan (6) and h1 is the total thickness of the fresh air wheel (61) and fresh air blades (62) on the fresh air fan (6) in the axial direction. 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 (71) and exhaust blades (72) on the exhaust fan (7); The condition is satisfied that S1 > S2.

14. The wall-mounted air conditioner (10000) according to claim 1, wherein, The exhaust fan (7) includes: The exhaust fan wheel (71) is coaxially arranged with the second motor (5) and connected to the motor housing (53) of the second motor (5); Exhaust blades (72), there are multiple exhaust blades (72), the exhaust blades (72) are arranged on the exhaust wheel (71) and extend only in the direction away from the fresh air fan (6), and the multiple exhaust blades (72) are arranged circumferentially on the exhaust wheel (71).

15. The wall-mounted air conditioner (10000) according to claim 1, wherein, The fresh air fan (6) includes: Fresh air impeller (61), the fresh air impeller (61) is coaxially arranged with the second motor (5) and connected to the output shaft (532) of the second motor (5); The fresh air blade (62) includes a first fresh air blade (621) which extends from the fresh air wheel (61) toward the direction away from the exhaust fan (7).

16. The wall-mounted air conditioner (10000) according to claim 15, wherein, The fresh air blade (62) also includes a second fresh air blade (622) that extends from the fresh air wheel (61) toward the direction of the exhaust fan (7).

17. The wall-mounted air conditioner (10000) according to claim 16, wherein, In the axial direction of the fresh air fan (6), the length of the second fresh air blade (622) is less than the length of the first fresh air blade (621).

18. The wall-mounted air conditioner (10000) according to claim 16, wherein, The fresh air impeller (61) has a disc hole (612) formed on it. The distance from the disc hole (612) to the center of the fresh air impeller (61) is less than the distance from the fresh air blade (62) to the center of the fresh air impeller (61).

19. The wall-mounted air conditioner (10000) according to claim 1, wherein, The fresh air inlet (801) is set upwards.

20. The wall-mounted air conditioner (10000) according to claim 11, wherein, The second volute (82) includes: The second volute half (821) is located on the side of the first volute (81) facing the heat exchange fan (41) and is detachably connected to the first volute (81). The second volute half (821) has an axial ventilation port (8211) at the radial center. 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). The axial air inlet end of the fresh air fan (6) is set towards the axial ventilation port (8211). The second volute half (821) and the first volute (81) surround the fresh air outlet (802). A fan cover (822) is located on the side of the second volute half (821) facing the heat exchange fan (41) and 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). The fan cover (822) and the second volute half (821) enclose the fresh air inlet (801).

21. The wall-mounted air conditioner (10000) according to claim 20, wherein, It also includes: a purification component (11), which is installed in the fresh air cavity (V012), the purification component (11) is connected to the second volute (82), the fresh air fan (6) can rotate to allow outdoor air to enter the fresh air volute (8) from the fresh air inlet (801), and can allow the outdoor air entering the fresh air volute (8) to be blown through the purification component (11) and then enter the room from the fresh air outlet (802).

22. The wall-mounted air conditioner (10000) according to claim 21, wherein, The purification component (11) includes a filter screen (111) that covers the axial vent (8211).

23. The wall-mounted air conditioner (10000) according to claim 22, wherein, The filter screen (111) is a square mesh, and the side length of the filter screen (111) is greater than the diameter of the axial vent (8211).

24. The wall-mounted air conditioner (10000) according to claim 21, wherein, A portion of the fresh air cavity (V012) forms an empty cavity (V0121), which is located on the side of the purification unit (11) away from the fresh air fan (6), and the fresh air inlet (801) communicates with the cavity (V0121).

25. The wall-mounted air conditioner (10000) according to claim 20, wherein, The fan cover (822) forms a positioning protrusion (8221) on the side facing the indoor heat exchanger (2); The base (3) has an end plate (31) at one end near the fan cover (822), and a positioning notch (311) is formed on the end plate (31). The positioning protrusion (8221) and the positioning notch (311) cooperate to position and pull the fresh air volute (8) and the indoor heat exchanger (2) closer together.

26. The wall-mounted air conditioner (10000) according to claim 21, wherein, An installation port (803) is also formed between the fan cover (822) and the second volute half (821), and the purification component (11) is detachably assembled into the fresh air cavity (V012) through the installation port (803).

27. The wall-mounted air conditioner (10000) according to claim 21, wherein, The fresh air volute (8) has a purification air inlet (804) for connecting to the room. The fresh air fan (6) can rotate to allow indoor air to enter the fresh air volute (8) from the purification air inlet (804) and be purified by the purification component (11), and allow indoor air entering the fresh air volute (8) to enter the room from the fresh air outlet (802). The purification air inlet (804) is located at the bottom of the fresh air volute (8) and faces downward.

28. The wall-mounted air conditioner (10000) according to claim 1, wherein, The exhaust volute (9) includes an air guide ring (91), which is a circular tube and has a smaller diameter in the direction toward the heat exchange fan (41). The area enclosed by the air guide ring (91) forms the exhaust air inlet (901). The exhaust fan (7) includes an exhaust wheel (71) and exhaust blades (72). The exhaust wheel (71) is connected to the motor housing (53) of the second motor (5). The exhaust blades (72) are connected to the side of the exhaust wheel (71) away from the heat exchange fan (41). The exhaust blades (72) are multiple and arranged circumferentially. The edge of the exhaust blade (72) away from the exhaust wheel (71) is the blade side edge (721). The distance between the part of the blade side edge (721) near the second motor (5) and the exhaust wheel (71) decreases. All the exhaust blades (72) form a side edge recess (723) at the point where the distance between the blade side edge (721) decreases. The end of the air guide ring (91) is located in the side edge recess (723).

29. The wall-mounted air conditioner (10000) according to claim 1, wherein, At least one of the fresh air fan (6) and the exhaust fan (7) includes: a disc and blades connected to the disc, wherein the blades are provided with a transition rounded corner structure at the connection between the blades and the disc.

30. The wall-mounted air conditioner (10000) according to claim 1, wherein, An indoor exhaust vent (903) for connecting to the room is formed on the exhaust volute (9). The rotation of the exhaust fan (7) can cause the indoor air entering the exhaust volute (9) to be discharged into the room through the indoor exhaust vent (903).

31. The wall-mounted air conditioner (10000) according to claim 1, wherein, A portion of the output shaft (532) is located inside the stator portion (51), and the output shaft (532) is rotatably connected to the stator portion (51).

32. A wall-mounted air conditioner (10000), comprising: Body (1000), said body (1000) includes: The housing (1) has an accommodating cavity (V1) inside. The housing (1) has a heat exchange inlet (101) and a heat exchange outlet (102). In the height direction of the main body (1000), the heat exchange inlet (101) is located above the heat exchange outlet (102). An indoor heat exchanger (2) is disposed within the accommodating cavity (V1); The base (3) is disposed in the accommodating cavity (V1) and a volute air duct (V03) is formed thereon; A heat exchange fan (41) is installed in the volute duct (V03) and is located on the side of the indoor heat exchanger (2) away from the heat exchange air inlet (101); The first motor (42) is disposed in the accommodating cavity (V1) and located at one end of the length direction of the main body (1000), and is used to drive the heat exchange fan (41) to rotate so that the air circulates between the air conditioner and the indoor space; This also includes: A second motor (5) is disposed within the accommodating cavity (V1), and the second motor (5) is located at the other end of the length direction of the main body (1000). The second motor (5) is an external rotor motor, and the second motor (5) includes: Stator section (51), wherein the stator section (51) has a wound coil; The rotor portion (52) is arranged radially around the outside of the stator portion (51). Motor housing (53), which is fixedly connected to the rotor portion (52); Output shaft (532), which is fixedly connected to the motor housing (53) and extends along the axial direction of the motor housing (53) toward the side of the heat exchange fan (41); Fresh air fan (6), the fresh air fan (6) is a centrifugal fan with axial air intake and radial air outlet, the fresh air fan (6) is located at The heat exchange fan (41) is located on the side away from the first motor (42), the fresh air fan (6) is located between the heat exchange fan (41) and the motor housing (53), and the fresh air fan (6) is connected to the output shaft (532) of the second motor (5); The exhaust fan (7) is a centrifugal fan with axial air intake and radial air exhaust. 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 outer side of the motor housing (53). The exhaust fan (7) is fixedly connected to the motor housing (53). In this case, the second motor (5) drives the fresh air fan (6) and the exhaust fan (7) to rotate synchronously when in operation; Fresh air volute (8), a fresh air duct (V01) is formed inside the fresh air volute (8), a fresh air fan (6) is installed inside the fresh air volute (8), and a fresh air inlet (801) and a fresh air outlet (802) are formed on the fresh air volute (8). The rotation of the fresh air fan (6) allows outdoor air to enter the fresh air volute (8) from the fresh air inlet (801), and allows outdoor air entering the fresh air volute (8) to enter the room from the fresh air outlet (802); An 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). An 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). The rotation of the exhaust fan (7) allows indoor air to enter the exhaust volute (9) from the exhaust inlet (901) and allows indoor air entering the exhaust volute (9) to be discharged to the outside from the exhaust outlet (902). The exhaust fan (7) includes an exhaust wheel (71) and exhaust blades (72). The exhaust blades (72) are located on the outer edge of the exhaust wheel (71) and extend along the axial direction of the exhaust wheel (71) in a direction away from the fresh air fan (6). The exhaust fan (7) further includes a protrusion (74) provided on the exhaust wheel (71). The center of the protrusion (74) is located on the axis of the exhaust fan (7), and the protrusion (74) extends relative to the exhaust wheel (71) toward the fresh air fan (6), so that the side of the protrusion (74) near the second motor (5) forms a receiving groove (V07) for the second motor (5). At least a portion of the stator (51) and at least a portion of the rotor (52) are accommodated in the receiving groove (V07); The fresh air volute (8) includes: The first volute (81) is located on the side of the exhaust volute (9) facing the heat exchange fan (41) and is detachably connected to the exhaust volute (9). The second volute (82) is located on the side of the first volute (81) facing the heat exchange fan (41) and is detachably connected to the first volute (81). The first volute (81) is located between the exhaust volute (9) and the second volute (82). The first volute (81) includes a first volute end plate (811) and a first volute surrounding plate (812), the first volute surrounding plate (812) extending along the edge of the first volute end plate (811) toward the heat exchange fan (41); The central portion of the first volute end plate (811) forms a recess (813) facing into the fresh air fan (6), and the center of the recess (813) is provided with a perforation (814). At least a portion of the protrusion (74) is located within the recess (813), and the output shaft (532) is connected to the fresh air fan (6) through the perforation (814).

33. The wall-mounted air conditioner (10000) according to claim 32, wherein, The total axial thickness of the stator (51), the rotor (52), and the motor housing (53) is h3; The exhaust fan (7) includes an exhaust wheel (71) and exhaust blades (72). The exhaust blades (72) are located on the outer edge of the exhaust wheel (71) and extend along the axial direction of the exhaust wheel (71). The total thickness of the exhaust wheel (71) and the exhaust blades (72) in the axial direction is h2. The condition is satisfied that h3 > h2.

34. The wall-mounted air conditioner (10000) according to claim 32, wherein, The fresh air fan (6) includes: a fresh air wheel (61) and fresh air blades (62), the fresh air blades (62) are located on the outer edge of the fresh air wheel (61) and extend along the axial direction of the fresh air wheel (61), and the total thickness of the fresh air wheel (61) and the fresh air blades (62) in the axial direction is h1; The exhaust fan (7) includes an exhaust wheel (71) and exhaust blades (72). The exhaust blades (72) are located on the outer edge of the exhaust wheel (71) and extend along the axial direction of the exhaust wheel (71). The total thickness of the exhaust wheel (71) and the exhaust blades (72) in the axial direction is h2. Where h2 < h1.

35. The wall-mounted air conditioner (10000) according to claim 32, wherein, The fresh air volute (8) and the exhaust volute (9) are offset in the circumferential direction of the second motor (5).

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