Wall-mounted air conditioner

Abstract

The wall-mounted air conditioner comprises a machine shell, a second motor, an exhaust fan, an exhaust volute, a fresh air fan and a fresh air volute, a fresh air inlet and a fresh air outlet are formed in the fresh air volute, and the fresh air fan rotates to enable outdoor air to enter the fresh air volute from the fresh air inlet and enter a room from the fresh air outlet; an exhaust air inlet and an exhaust air outlet are formed in the exhaust volute, the exhaust air inlet is opened upwards in the vertical direction of the main body, and the exhaust fan rotates to enable indoor air to enter the exhaust volute from the exhaust air inlet and to be exhausted outdoors from the exhaust air outlet; and the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in a working state. According to the wall-mounted air conditioner, the axial direction of the exhaust fan and the axial direction of the fresh air fan are arranged in the height direction of the main body, the exhaust air inlet and the fresh air inlet are open in the axial direction, the air inlet amount and the air outlet amount can be increased, and therefore the comfort degree of indoor air is improved.

Description

Technical Field

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

[0002] 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.

[0003] In the existing technology, the layout of the fresh air device and the exhaust air device of the air conditioner results in a small intake air volume of the fresh air device and a small exhaust air volume of the exhaust air device, thereby reducing the comfort of the indoor air environment. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a wall-mounted air conditioner in which the exhaust fan and fresh air fan are axially arranged along the height of the main body, and the exhaust air inlet and fresh air inlet are both axially arranged inside the main body, consistent with the distribution direction of the heat exchange air inlet and heat exchange air outlet of the main body. This can increase the air intake and exhaust volume, thereby improving the comfort of indoor air.

[0005] A wall-mounted air conditioner according to an embodiment of the present invention includes: a main body, the main body comprising: a casing, the casing having an internal cavity, and a heat exchange air inlet and a heat exchange air outlet formed thereon; an indoor heat exchanger disposed within the cavity; a base disposed within the cavity, and a volute air duct formed thereon; 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 at one end along the length of the main body, the first motor driving the heat exchange fan to rotate so that air exchanges heat with the indoor space inside the air conditioner, the first motor having a first output shaft, the heat exchange fan being connected to the first output shaft, and the first output shaft extending along the length of the main body.

[0006] The wall-mounted air conditioner further includes: a second motor disposed within the accommodating cavity, and the second motor being located at the other end of the length direction of the main body; the second motor including: a stator portion having a wound coil on the stator portion; a rotor portion disposed around the outside of the stator portion in the radial direction of the stator portion; a motor housing connected to the rotor portion; and a second output shaft fixedly connected to the motor housing, the axial direction of the second output shaft being along the height direction of the main body.

[0007] The wall-mounted air conditioner includes: a fresh air fan, which is a centrifugal fan with axial air intake and radial air outlet, connected to the second output shaft, with the axial direction of the fresh air fan along the height direction of the main body, and the fresh air fan located below the stator in the height direction of the main body; and an exhaust fan, which is a centrifugal fan with axial air intake and radial air outlet, sleeved on the radial outer side of the motor housing, fixedly connected to the motor housing, with the axial direction of the exhaust fan along the height direction of the main body, and the exhaust fan located above the fresh air fan in the height direction of the main body.

[0008] The wall-mounted air conditioner includes: an exhaust fan, which is a centrifugal fan with axial air intake and radial air exhaust. The exhaust fan is sleeved on the radial outer side of the motor housing and is fixedly connected to the motor housing. The axial direction of the exhaust fan is along the height direction of the main body, and the exhaust fan is located above the fresh air fan in the height direction of the main body.

[0009] The wall-mounted air conditioner 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, a fresh air inlet and a fresh air outlet formed on the fresh air volute, the fresh air inlet opening downwards along the height direction of the main body, and the fresh air outlet opening forwards along the front-rear direction of the main body. 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.

[0010] The wall-mounted air conditioner further includes: an exhaust volute, an exhaust duct formed inside the exhaust volute, an exhaust fan installed inside the exhaust volute, an exhaust inlet and an exhaust outlet formed on the exhaust volute, the exhaust inlet opening upwards along the vertical direction of the main body, the rotation of the exhaust fan allowing indoor air to enter the exhaust volute from the exhaust inlet, and allowing indoor air entering the exhaust volute to be exhausted to the outside from the exhaust outlet; the second motor drives the fresh air fan and the exhaust fan to rotate synchronously when in operation.

[0011] So, the first motor and the second motor are located at opposite ends of the length of the main body. On the one hand, the two motors are separated and far apart, so there is little electromagnetic interference between them. On the other hand, the two motors are arranged at opposite ends of the length of the main body, rather than in the thickness or height direction of the main body, so that the main body of the wall-mounted air conditioner is slender and thin. The height direction of the main body is consistent with the vertical direction, and the thickness direction of the main body is consistent with the front and back direction.

[0012] The exhaust fan is located above the fresh air fan, and the exhaust air inlet is also located above the exhaust fan. This allows stale indoor air to enter from above. The fresh air outlet of the fresh air fan is lower than the exhaust air inlet. Fresh outdoor air flows into the room through the fresh air outlet, while stale air is exhausted through the exhaust air inlet from above. This means that the air coming out of the fresh air outlet can reach people or objects in the room more quickly and directly, improving the comfort of people in the room. Stale air is then exhausted into the exhaust fan housing from above, away from people and objects in the room, reducing the impact of stale air on people in the room.

[0013] The second motor is positioned along the height of the main body, while the exhaust fan's axis is also positioned vertically. The exhaust fan's air inlet faces upwards, meaning the exhaust fan's axis and the air inlet's opening direction are aligned. When airflow enters the exhaust volute from the air inlet, the fan blades rotate, carrying the airflow directly into the exhaust volute along a shorter axial path. This shortens the exhaust path and ensures unobstructed airflow, further reducing airflow resistance and increasing the amount of air entering the exhaust volute, thus increasing the exhaust volume. Simultaneously, the fresh air fan's axis is also positioned along the height of the air conditioner. When outdoor fresh air enters the fresh air volute axially, the fan blades rotate, carrying the fresh air directly into the volute. This also shortens the fresh air intake path, ensures unobstructed airflow, and reduces airflow resistance, increasing the amount of outdoor air entering the fresh air volute and allowing for rapid entry, thereby increasing the amount of fresh air exhausted into the room.

[0014] Furthermore, the exhaust fan is mounted on the radial outer side of the motor housing, which saves the distance between the motor housing and the exhaust fan and fresh air fan along the axial direction, making the structure more compact and occupying less axial space. In addition, the motor housing is embedded in the exhaust fan, which keeps the second motor away from the water collection tray at the bottom of the indoor heat exchanger, thereby reducing the impact of water from the water collection tray on the second motor and also allowing the exhaust volute to protect the second motor.

[0015] According to an embodiment of the wall-mounted air conditioner of the present invention, in the height direction of the main body, the heat exchange air inlet is formed on the top of the casing, and the exhaust air inlet is formed on the top of the exhaust volute.

[0016] First, the heat exchange air inlet is located at the top of the casing, while the heat exchange air outlet is located at the bottom of the casing. This means that a large amount of indoor air is drawn into the containment cavity from the top of the casing. Both the exhaust air inlet and the heat exchange air inlet are located at the top. As air is drawn into the vicinity of the heat exchange air inlet, it is also close to the exhaust air inlet, which increases the amount of air entering the exhaust air inlet and thus improves the efficiency of indoor air being discharged to the outside.

[0017] On the other hand, this also means that when the exhaust fan is located above the fresh air fan, the exhaust air inlet will also be set at a relatively high position in the height direction of the main body. That is, the exhaust air inlet is relatively close to the heat exchange air inlet of the air conditioner. Therefore, the heat exchange air inlet can be used directly as the air intake of the exhaust fan on the casing, without having to open an air intake in other locations, which simplifies the process and improves the overall appearance.

[0018] According to an embodiment of the present invention, in a wall-mounted air conditioner, the exhaust outlet is disposed on the peripheral wall of the exhaust volute, and the exhaust outlet is configured to open in the longitudinal direction of the main body in a direction away from the heat exchange fan.

[0019] Firstly, the exhaust vent is positioned open away from the heat exchange fan, which eliminates the need for heat exchange between the indoor and outdoor polluted air. The heat exchange is primarily focused on the indoor air, improving the efficiency of heat exchange. This also prevents the polluted indoor air from being hindered from being expelled outdoors by the heat exchange fan, allowing for rapid exhaust of indoor air. Furthermore, it facilitates the assembly and disassembly of the exhaust vent and connecting pipes, resulting in convenient installation, disassembly, and low maintenance costs.

[0020] According to an embodiment of the wall-mounted air conditioner, the fresh air inlet is open downwards along the height direction of the main body.

[0021] In practice, by setting a downward-facing open fresh air inlet, and with the axial direction of the fresh air volute along the height of the main body, air can be directly introduced along the axial direction during intake. In contrast, when radial air intake is used in the prior art, the air intake path needs to be radial and flow along the axial direction, the path is winding, and it may have a large airflow driving resistance due to the influence of the side wall of the fresh air volute. That is, the embodiment of the present invention introduces fresh air directly along the axial direction, which can reduce the wind resistance such as air intake obstruction and shorten the air intake path. At the same time, it can be staggered with the exhaust air inlet, reducing the mutual influence between fresh air and polluted air.

[0022] According to an embodiment of the present invention, the wall-mounted air conditioner has a fresh air outlet that opens downwards and forwards.

[0023] In practice, air conditioners are generally installed in the upper part of the room, higher than the user. The lower front side of the air conditioner faces the user and objects in the room, and the fresh air outlet opens forward and downward. This allows for smoother airflow and better contact with the user when fresh air is discharged into the room. Furthermore, the heat exchange outlet is located below, and some of the fresh air flowing from the fresh air outlet can be close to or partially overlap with the outlet area of ​​the heat exchange outlet. This facilitates the mixing of fresh air with the heat-exchanged indoor air. On the one hand, it improves the uniformity of the fresh air mixture in the indoor air. On the other hand, the fresh air can absorb the cold or heat of the heat-exchanged indoor air, making the fresh air temperature closer to the indoor temperature and improving the comfort of airflow.

[0024] According to an embodiment of the wall-mounted air conditioner of the present invention, the fresh air volute includes: a first volute, the first volute being detachably connected to the exhaust volute; and a second volute, the second volute being located on the side of the first volute away from the exhaust volute, and the second volute being detachably connected to the first volute; wherein the first volute and the second volute together define a volute cavity, and the fresh air fan is located within the volute cavity; the first volute and the second volute define a fresh air outlet, and the second volute forms a fresh air inlet on the side away from the first volute.

[0025] First, the fresh air fan and the exhaust fan are arranged along the axial direction. The fresh air volute is divided into at least a first volute and a second volute along the axial direction and processed separately. This can reduce the difficulty of manufacturing and assembly. Moreover, such a complex housing is easier to control in terms of quality after being manufactured separately. The first volute is detachably connected to the exhaust volute, and the second volute is detachably connected to the first volute, which facilitates assembly and subsequent adjustment and maintenance.

[0026] According to an embodiment of the wall-mounted air conditioner of the present invention, the second volute includes: a second volute half, the second volute half being located on the side of the first volute away from the exhaust volute, and the second volute half being detachably connected to the first volute, the second volute half being provided with an axial ventilation opening, the volute cavity being formed between the second volute half and the first volute, the axial air inlet end of the fresh air fan being disposed facing the axial ventilation opening, and the second volute half and the first volute surrounding the fresh air outlet.

[0027] In practice, by setting a second volute half, and connecting the second volute half with the first volute, a volute cavity for installing the fresh air fan can be formed. When it is necessary to replace or repair the fresh air fan, it is convenient to connect and disassemble with the first volute. In addition, the second volute half is provided with an axial ventilation port, which can increase the intake volume of fresh air and reduce weight.

[0028] According to an embodiment of the wall-mounted air conditioner of the present invention, the second volute further includes a fan cover, the fan cover being located on the side of the second volute half away from the first volute, and the fan cover being connected to the second volute half, the cavity enclosed by the fan cover and the second volute half being a fresh air cavity, and the fresh air inlet being formed in the fan cover.

[0029] With this configuration, the fresh air cavity and the volute cavity together form a fresh air duct, creating a fresh air cavity at the air inlet of the fresh air fan. This fresh air cavity can cover the axial air inlet of the fresh air fan, allowing air to enter the fresh air cavity axially from the fresh air inlet, thereby improving the air intake efficiency of the fresh air fan and reducing air intake loss.

[0030] According to an embodiment of the present invention, the wall-mounted air conditioner further includes a purification component, which is installed in the fresh air cavity and connected to the second volute. The rotation of the fresh air fan allows outdoor air entering the fresh air volute to flow through the purification component and then enter the room through the fresh air outlet.

[0031] The purification component is located inside the fresh air duct and is used to purify the fresh air blown into the room, thereby improving the cleanliness of the indoor air. In this way, the fresh air airflow can blow almost vertically over the purification component, which can further reduce the fresh air intake consumption and increase the fresh air volume. Moreover, when the indoor heat exchanger is in cooling mode, causing condensation to form in the fresh air, the condensation can be left on the purification component as the air flows through it, further preventing water from being blown out when the fresh air device is venting.

[0032] According to an embodiment of the present invention, the purification component includes a filter screen, which covers the axial ventilation opening.

[0033] The filter screen covers the entire air intake end of the fresh air fan. The filter screen has a large coverage area, resulting in a large filtration area and good filtration effect. The filter screen helps to ensure sufficient contact area with the flowing air, and it is lightweight and has low airflow noise.

[0034] According to an embodiment of the wall-mounted air conditioner of the present invention, 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.

[0035] Therefore, the installation port is formed by the fan cover and the second volute half. The purification component can be detachably assembled into the fresh air cavity through the installation port. This allows the installation port to be set to a larger size, making it convenient to install larger purification components.

[0036] According to an embodiment of the present invention, the wall-mounted air conditioner includes an exhaust fan comprising 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 in a direction away from the fresh air fan. The exhaust fan includes a protrusion on the exhaust wheel, the center of which is located on the axis of the exhaust fan, and the protrusion extends 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.

[0037] In practice, the exhaust blades extend along the axial direction of the exhaust wheel away from the fresh air fan, and are open on the side facing the axial air intake end to facilitate airflow intake, reduce airflow resistance, and ensure the intake volume of the exhaust. At least a portion of the stator and at least a portion of the rotor are housed in the receiving groove formed by the protrusion. The receiving groove is used to accommodate part of the stator and rotor structure, and the protrusion can also be used to support the stator, improve the integration of the first volute and the exhaust fan, and improve the stability of the second motor connected in the first volute. Furthermore, the protrusion extends into the exhaust fan, which can save space in the height of the main body, making the structure compact and ensuring a reliable and stable connection between the second motor and the exhaust fan.

[0038] According to an embodiment of the present invention, the first volute includes a first volute end plate and a first volute perimeter plate, wherein the first volute perimeter plate extends along the edge of the first volute end plate in a direction away from the exhaust volute; wherein a central portion of the first volute end plate forms a recess facing into the fresh air fan, and at least a portion of the protrusion is located within the recess.

[0039] In practice, the hub of the exhaust fan forms a protrusion to accommodate the second motor. This protrusion also improves the structural strength of the exhaust fan. Furthermore, the main body of the second motor, assembled within the protrusion, occupies less of the exhaust duct and more of the fresh air duct, which matches the design where the fresh air volume is greater than the exhaust air volume. The connection method is simple, with high alignment, improving assembly precision. A portion of the protrusion is located within a recess in the first volute end plate. The first volute surrounds the exhaust fan, and the recess can also accommodate the protrusion and the main body of the second motor. Thus, when the first volute end plate is connected to the exhaust fan, the protrusion and the recess share a portion of the axial space, meaning the first volute end plate and the exhaust fan share a portion of the axial space. This saves axial space, improves the integration of the fresh air volute and the exhaust volute, and reduces the overall structural volume.

[0040] According to an embodiment of the wall-mounted air conditioner of the present invention, a perforation is provided at the center of the recess, and the second output shaft is connected to the fresh air fan through the perforation.

[0041] During installation, the second output shaft passes through the perforated part and is connected to the fresh air fan after passing through the first volute end plate. During the connection process, only the second output shaft passes through the first volute end plate, which helps to seal the air, reduce the chance of fresh air and exhaust air flowing between each other, reduce airflow disturbance, and the connection method is simple and easy to disassemble and assemble.

[0042] According to an embodiment of the present invention, in a wall-mounted air conditioner, the first volute and the second volute define the fresh air outlet.

[0043] In practice, the volute cavity formed by the first and second volutes is used to install the fresh air fan. A fresh air outlet can be set on the front side of the second volute. When the second and first volutes are connected, the fresh air outlet is located on the front side of the fresh air volute. When the fresh air fan inside the fresh air volute rotates, it can bring fresh air out from the fresh air outlet. That is, there is no need to set up a fresh air outlet duct. The fresh air outlet can be defined by the first and second volutes, which reduces the complexity of the structure and shortens the fresh air outlet path, thus improving the air outlet efficiency.

[0044] According to an embodiment of the present invention, the wall-mounted air conditioner includes a fresh air fan comprising a fresh air impeller and fresh air blades. The fresh air impeller is coaxially arranged with the second motor and connected to the second output shaft of the second motor. The fresh air blades include a first fresh air blade extending from the fresh air impeller toward a direction away from the exhaust fan.

[0045] In practice, the fresh air impeller is the main supporting structure of the fresh air fan. The fresh air blades are connected to the outer edge of the fresh air impeller away from its center, which allows the airflow to flow out of the fresh air fan along the outer edge area of ​​the fresh air impeller. The fresh air blades include the first fresh air blade, which extends downward. The blade tube formed by multiple first fresh air blades arranged circumferentially is open on the side facing the axial air intake end, which facilitates the intake of airflow, reduces the air intake resistance, and ensures the intake volume of fresh air.

[0046] According to an embodiment of the wall-mounted air conditioner of the present invention, the fresh air blade further includes a second fresh air blade, which extends from the fresh air impeller toward the direction close to the exhaust fan.

[0047] The second fresh air blade extends upwards, forming two sets of blades on both sides of the fresh air wheel. This means that the fresh air fan includes double-layer centrifugal blades. In this way, while meeting the demand for large air volume, the double-layer centrifugal blade structure design helps to increase the overall structural strength of the centrifugal fan.

[0048] According to an embodiment of the wall-mounted air conditioner, in the axial direction of the fresh air fan, the length of the second fresh air blade is shorter than the length of the first fresh air blade.

[0049] When the axial length of the first fresh air blade is greater, the longer blade can capture more air and drive airflow, which is conducive to the first fresh air blade obtaining a larger fresh air intake volume and increasing the wind pressure, thus improving the wind gathering effect. On the other hand, using a shorter second fresh air blade is conducive to supplementing the fresh air intake. The volume between the first fresh air blade and the first volute end plate is small, that is, the airflow volume is small. When the second fresh air blade rotates, it can drive this part of the airflow and discharge it from the fresh air outlet. Therefore, when the airflow volume is small, it is not necessary to set a longer second fresh air blade.

[0050] According to an embodiment of the present invention, in a wall-mounted air conditioner, 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.

[0051] This helps 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, reducing the turbulence caused by competing with the first fresh air blade for airflow.

[0052] According to an embodiment of the present invention, the total axial thickness of the stator, the rotor and the motor housing of the wall-mounted air conditioner is M, and the axial thickness of the fresh air fan is w, where w>M.

[0053] By setting the axial thickness of the fresh air fan to be greater than the total axial thickness of the stator, rotor, and motor housing of the second motor, the axial proportion of the fresh air fan is increased while simultaneously meeting the needs of the second motor to drive both the fresh air fan and the exhaust fan. This increases the amount of fresh air brought in by the fresh air fan and also reduces the space occupied by the second motor, thereby improving the comfort of indoor users while increasing the amount of fresh air.

[0054] According to an embodiment of the wall-mounted air conditioner of the present invention, the area of ​​the outer curved surface of the fresh air fan is S1, and the area of ​​the outer curved surface of the exhaust fan is S2; S1 = πD1*W, where D1 is the outer diameter of the fresh air fan and W is the axial thickness of the fresh air fan; S2 = πD2*N, where D2 is the outer diameter of the exhaust fan and N is the axial thickness of the exhaust fan; satisfying S1 > S2. The larger area of ​​the outer curved surface of the fresh air fan and the smaller area of ​​the outer curved surface of the exhaust fan are beneficial for achieving a larger fresh air volume within the limited space of the entire unit.

[0055] According to an embodiment of the wall-mounted air conditioner of the present invention, the axial thickness of the exhaust fan is N, and the axial thickness of the fresh air fan is W, wherein N <W。

[0056] At this point, the amount of fresh air entering from the outside by the fresh air fan is greater than the amount of indoor air being exhausted to the outside, thus ensuring that there is always a large amount of fresh air indoors and improving indoor comfort. In addition, the main body of the fresh air fan has a larger axial thickness, resulting in greater structural strength and the ability to withstand greater torque. On the other hand, the exhaust fan requires less airflow, and the smaller axial thickness of its main body can appropriately reduce the exhaust airflow, while also reducing the axial dimensions of the bidirectional ventilation components.

[0057] According to an embodiment of the wall-mounted air conditioner of the present invention, the total axial thickness of the stator, the rotor and the motor housing is M, and the axial thickness of the exhaust fan is N, where M>N.

[0058] Since the second motor needs to drive both the fresh air fan and the exhaust fan simultaneously, although the exhaust air volume is designed to be smaller, the fresh air volume is designed to be larger. Therefore, the total axial thickness of the stator, rotor, and motor housing is set to be greater than the axial thickness of the main body of the exhaust fan. This ensures that the second motor can support the rotation of both fans, allowing a portion of the second motor to extend into the fresh air fan. This not only improves the second motor's support capacity but also enhances the integration of the second motor with the fresh air fan and the exhaust fan, thereby improving the overall synchronous rotation of the fresh air fan and the exhaust fan.

[0059] According to an embodiment of the present invention, the wall-mounted air conditioner includes an air guide ring, which is a circular tube and its diameter gradually decreases in the direction toward the fresh air volute. The area enclosed by the air guide ring forms the exhaust air inlet.

[0060] As the diameter of the air guide ring decreases, the channel through which air flows becomes narrower. According to the principles of fluid mechanics, at the same flow rate, a narrower channel will increase the airflow speed, thereby increasing the wind speed and the amount of indoor air entering the exhaust air inlet, thus improving exhaust efficiency.

[0061] According to an embodiment of the wall-mounted air conditioner of the present invention, 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 fresh air volute. The exhaust blades are multiple and arranged circumferentially. The edge of the exhaust blade away from the exhaust wheel is a blade side edge. The distance between the portion of the blade side edge near the second motor and the exhaust wheel decreases. 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 within the side edge recess.

[0062] The exhaust fan blades are concave blades, and both the air guide ring and the concave blades are recessed towards the fresh air fan. The air guide ring partially enters the side edge recess formed by the concave blades. This design allows the air guide ring and the exhaust fan to partially overlap axially, eliminating the need to increase the axial dimension of the exhaust volute without the air guide ring. The reduced distance between the blade side edge near the second motor and the exhaust wheel forms a transition section. After the exhaust fan rotates, the surface swept by the exhaust blades in the transition section forms a funnel surface with a reduced diameter, which helps the airflow concentrate towards the center and reduces energy loss caused by airflow disturbance.

[0063] According to an embodiment of the present invention, a wall-mounted air conditioner has an air inlet on the casing at one end where the second motor is located, and the air inlet is located at the top of the main body. A first ventilation duct is formed between the air inlet and the exhaust air inlet. The exhaust fan rotates and drives indoor air to enter the first ventilation duct through the air inlet, and causes the indoor air to enter the exhaust volute through the exhaust air inlet.

[0064] In other words, no physical duct is needed to connect the air inlet and exhaust inlet of the casing. Airflow is drawn in from the top solely by wind pressure. The casing air inlet is located at the top of the casing, in an area not visible to the user, thus concealing the air inlet and improving the aesthetics. Furthermore, the distance between the top-mounted casing air inlet and exhaust air inlet is relatively short, and the exhaust air intake path prioritizes the exhaust air entering the casing air inlet. Since the casing air inlet is located axially above the exhaust volute, air can enter the exhaust air inlet axially from the casing air inlet. This is a significant improvement over existing technologies where the exhaust air inlet enters radially from the exhaust volute. After entering the exhaust fan, during the rotation of the exhaust fan, it is affected by the resistance of the exhaust volute sidewall, and the radial exhaust air enters radially and flows axially, forming a tortuous exhaust air intake path, resulting in high exhaust resistance and low exhaust air intake volume. However, in the embodiment of the present invention, the exhaust air directly enters the exhaust air intake along the axial direction of the exhaust fan, the exhaust air intake path is unobstructed, and the exhaust air intake path is reduced, thereby increasing the exhaust air intake volume. Furthermore, after the indoor air enters the first ventilation duct through the housing air intake, it can directly enter the exhaust air intake, increasing the air intake volume of the exhaust air intake, thereby improving the air intake effect.

[0065] According to an embodiment of the wall-mounted air conditioner of the present invention, an air inlet is provided on the casing at one end where the second motor is located, and the air inlet is located on the side of the main body. The exhaust fan rotates, driving indoor air into the interior of the casing through the air inlet, and then into the exhaust volute through the exhaust air inlet. If the air inlet is located on the left side of the main body, the path between the air inlet and the exhaust air inlet is still shortened, further ensuring the exhaust and intake air volume.

[0066] According to an embodiment of the present invention, the wall-mounted air conditioner further includes an electrical box disposed within the accommodating cavity; wherein the electrical box and the first motor are located at the same end in the length direction of the main body; or, the electrical box and the second motor are located at the same end in the length direction of the main body.

[0067] When the electrical box and the bidirectional ventilation assembly are located at the same horizontal end of the heat exchange fan, the electrical box is situated on top of the fresh air volute and the exhaust volute. This arrangement further facilitates control over the length of the wall-mounted air conditioner. When the electrical box is located at one horizontal end of the heat exchange fan, and the fresh air fan and exhaust fan are located at the other horizontal end, the operation of the fresh air volute and the exhaust volute has minimal impact on the electrical box.

[0068] In this embodiment of the invention, the electrical box can be set in the direction of the axial arrangement of the fresh air fan and the exhaust fan, thereby improving the integration of the electrical box with the fresh air fan and the exhaust fan, reducing the length dimension of the air conditioner, making full use of the vertical space of the main body, and making full use of the airflow driven by the heat exchange fan and the fresh air fan to dissipate heat from the electrical box.

[0069] According to an embodiment of the present invention, the wall-mounted air conditioner further includes an exhaust duct, which extends along the height direction of the main body, with the upper end of the exhaust duct connected to the exhaust outlet and the lower end of the exhaust duct extending outside the casing.

[0070] In practice, the exhaust duct is set along the height of the main body. That is, the airflow direction of the exhaust duct and the exhaust air inlet is basically along the axis of the fresh air fan and the exhaust fan. This can improve the exhaust efficiency, save space in the length direction of the main body, and also make the integration of the exhaust duct with the exhaust volute and the fresh air volute more complete, saving space.

[0071] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0072] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0073] Figure 1 This is a schematic diagram of the structure of a wall-mounted air conditioner according to an embodiment of the present invention;

[0074] Figure 2 This is a cross-sectional view of a wall-mounted air conditioner according to an embodiment of the present invention;

[0075] Figure 3 These are cross-sectional views of the wall-mounted air conditioner in different locations according to an embodiment of the present invention;

[0076] Figure 4 This is a cross-sectional view of the bidirectional ventilation assembly of a wall-mounted air conditioner according to an embodiment of the present invention;

[0077] Figure 5 This is a three-dimensional schematic diagram of the bidirectional ventilation assembly according to an embodiment of the present invention;

[0078] Figure 6 This is a three-dimensional schematic diagram of the bidirectional ventilation assembly from the rear view according to an embodiment of the present invention;

[0079] Figure 7 This is a cross-sectional schematic diagram of the bidirectional ventilation assembly according to an embodiment of the present invention;

[0080] Figure 8 This is a cross-sectional structural diagram of the exhaust fan according to an embodiment of the present invention;

[0081] Figure 9 This is a cross-sectional structural schematic diagram of the fresh air fan according to an embodiment of the present invention;

[0082] Figure 10 This is a front view of the fresh air fan according to an embodiment of the present invention;

[0083] Figure 11 This is a schematic diagram of the structure of the bidirectional ventilation assembly bursting open according to an embodiment of the present invention;

[0084] Figure 12 This is a schematic diagram of the structure of the second motor bursting open according to an embodiment of the present invention;

[0085] Figure 13 This is a cross-sectional view of the second motor according to an embodiment of the present invention;

[0086] Figure 14 This is a cross-sectional view of the exhaust fan and exhaust volute of an embodiment of the present invention;

[0087] Figure 15 This is a schematic diagram of the volute air duct of the main body of an embodiment of the present invention.

[0088] Attached image reference numerals: Wall-mounted air conditioner 10000, Main body 1000.

[0089] Housing 1, accommodating cavity V1, first chamber V11, second chamber V12

[0090] Heat exchanger air inlet 101, heat exchanger air outlet 102, casing air inlet 103, first ventilation duct V04.

[0091] Indoor heat exchanger 2,

[0092] Base 3, volute air duct V03,

[0093] Heat exchange fan 41, first motor 42, first output shaft 421

[0094] Second motor 5, stator 51, rotor 52, motor housing 53, second output shaft 54.

[0095] Fresh air fan 6, fresh air disc 61, disc hole 612, fresh air blade 62, first fresh air blade 621, second fresh air blade 622.

[0096] Exhaust fan 7, receiving slot V07, exhaust wheel 71, exhaust blade 72, blade side edge 721, side edge recess 73, protrusion 74.

[0097] 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, mounting port 803.

[0098] First volute 81, first volute end plate 811, first volute surrounding plate 812, recess 813, perforation 814.

[0099] Second volute 82, second volute half 821, axial vent 8211, fan cover 822.

[0100] Exhaust volute 9, exhaust duct V02, exhaust inlet 901, exhaust outlet 902, second volute enclosure 906, air guide ring 91.

[0101] Purification component 11, filter screen 111,

[0102] Electrical box 13, exhaust duct 14, fresh air inlet pipe 141, exhaust outlet pipe 142, air guide grille 16. Detailed Implementation

[0103] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0104] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0105] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0106] This invention provides 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 may include heat exchange fins to increase the contact area between 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 may include 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 a cooling mode or a 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 may include 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 may include 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 the present invention propose 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 is for reference. Figures 1-15 The wall-mounted air conditioner according to an embodiment of the present invention features an exhaust fan with its exhaust inlet facing upwards, meaning the axial direction of the exhaust fan is aligned with the opening direction of the exhaust inlet. This further reduces the airflow resistance, increasing the amount of air entering the exhaust volute and thus increasing the exhaust volume. Simultaneously, the fresh air fan's axial direction is also aligned with the height of the air conditioner and enters the fresh air volute axially, increasing the amount of outdoor air entering the fresh air volute and allowing for faster entry, thereby increasing the amount of fresh air discharged into the room. Furthermore, the close proximity of the exhaust inlet and the casing inlet 103 further enhances the exhaust volume.

[0125] like Figure 1-15 As shown, a wall-mounted air conditioner according to an embodiment of the present invention, such as Figure 1 and Figure 2 As shown, it includes: main body 1000.

[0126] The main body 1000 includes: casing 1. For example... Figure 1 , Figure 2 and 15 As shown, 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. After the air enters the heat exchange air inlet 101 and is heat exchanged, it flows from the heat exchange air outlet 102 to the indoor user.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] In addition, the casing 1 can serve a protective function and constitute the overall external structure of the wall-mounted air conditioner 10000.

[0132] 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.

[0133] Reference Figure 2 As shown, 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.

[0134] 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.

[0135] Reference Figure 2 and Figure 3As shown, 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 to ensure that the resistance encountered by the indoor air when flowing through the indoor heat exchanger 2 is small.

[0136] Reference Figure 2 and Figure 3 As shown, the main body 1000 also includes a heat exchange fan 41, which is disposed in the volute air duct V03.

[0137] 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.

[0138] In some embodiments, the heat exchange fan 41 is located on the side of the indoor heat exchanger 2 away from the heat exchange air inlet 101. It can be understood that the heat exchange fan 41 is a power drive component that drives the indoor air to exchange heat with the indoor heat exchanger 2 by rotation, and it is also a power drive component for air supply.

[0139] 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.

[0140] Reference Figure 2 As shown, the main body 1000 also 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.

[0141] 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.

[0142] 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.

[0143] In some embodiments, such as Figure 2 As shown, the first motor 42 is located at one end of the length 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-to-back direction.

[0144] In practice, the first motor 42 has a first output shaft 421, and the heat exchange fan 41 is connected to the first output shaft 421. The axial direction of the first output shaft 421 extends along the length direction of the main body 1000, so that the first motor 42 can be connected to the heat exchange fan 41 along the length direction of the main body 1000. In this way, the first motor 42 can drive the heat exchange fan 41 to run, and the heat exchange fan 41 drives the airflow to draw indoor air into the casing 1 from the heat exchange air inlet 101. The drawn-in air exchanges heat with the indoor heat exchanger 2, and the heat-exchanged air is sent to the room from the heat exchange air outlet 101. In addition, more air exchanges heat with the indoor heat exchanger along the length direction of the main body 1000, resulting in high air heat exchange efficiency.

[0145] In some embodiments, such as Figure 7 As shown, the wall-mounted air conditioner 10000 also includes a second motor 5, which is disposed in the accommodating cavity V1 and located at the other end of the length direction of the main body 1000.

[0146] 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.

[0147] Reference Figure 7 , Figure 12 and Figure 13 As shown, the second motor 5 includes a stator section 51 and a rotor section 52, which together form the main body of the second motor 5. The stator section 51 has wound coils, which generate an alternating magnetic field when alternating current is applied. The rotor section 52 is induced in the alternating magnetic field and rotates.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] Reference Figure 7 and Figure 12 As shown, the second motor 5 also includes a motor housing 53, which can support and protect the main body of the second motor 5.

[0152] 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.

[0153] The second motor 5 also includes a second output shaft 54, which is fixedly connected to the motor housing 53. Both ends of the second output shaft 54 ​​can be supported and connected to the motor housing 53. In other words, the main body of the second motor 5 is spaced a certain distance from the indoor heat exchanger 2 and the heat exchange fan 41, reducing the vibration transmitted from the operation of the second motor 5 to the indoor heat exchanger 2 and the heat exchange fan 41.

[0154] The axial direction of the second output shaft 54 ​​is along the height direction of the main body 1000, that is, the extension direction of the second output shaft 54 ​​is perpendicular to the extension direction of the first output shaft 421. In this way, the driving force of the second motor 5 at the other end of the main body 1000 is transmitted along the height direction of the main body 1000. For example, the second output shaft 54 ​​can output driving force downward along the height direction of the main body 1000, and the second output shaft 54 ​​can also output driving force upward along the height direction of the main body 1000 to achieve different driving modes.

[0155] Reference Figure 4 , Figure 6 and Figure 11As shown, 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 connected to the second output shaft 54. The axial direction of the fresh air fan 6 is along the height direction of the main body 1000, and the fresh air fan 6 is located below the stator part 51 in the height direction of the main body 1000.

[0156] Reference Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 11 As shown, the wall-mounted air conditioner 10000 also includes an exhaust fan 7, which is a centrifugal fan with axial air intake and radial air exhaust. The exhaust fan 7 is sleeved on the radial outer side of the motor housing 53 and is fixedly connected to the motor housing 53. The axial direction of the exhaust fan 7 is along the height direction of the main body 1000, and in the height direction of the main body 1000, the exhaust fan 7 is located above the fresh air fan 6.

[0157] 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.

[0158] Furthermore, both the fresh air fan 6 and the exhaust fan 7 are centrifugal fans, allowing for a more rational arrangement of their airflow directions. For example, the fresh air fan 6 draws in air axially and exhausts it radially, while the exhaust fan 7 draws in air axially and exhausts it radially. Both fans draw in air from opposite ends at a height of 1000mm along the main body, and then both exhaust air is driven to exhaust 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.

[0159] Reference Figures 4-11 As shown, the wall-mounted air conditioner 10000 also includes: a fresh air volute 8, a fresh air duct V01 formed inside the fresh air volute 8, a fresh air fan 6 installed inside the fresh air volute 8, and a fresh air inlet 801 and a fresh air outlet 802 formed on the fresh air volute 8. Outdoor air can flow into the fresh air volute 8 along the fresh air inlet 801, and the incoming airflow can be exhausted into the room from the fresh air outlet 802 on the front side of the fresh air volute 8.

[0160] In other words, 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.

[0161] Reference Figures 1-11 As shown, the wall-mounted air conditioner 10000 also includes: an exhaust volute 9, 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.

[0162] The rotation of the exhaust fan 7 allows indoor air to enter the exhaust volute 9 from the exhaust air inlet 901, and allows the indoor air entering the exhaust volute 9 to be exhausted to the outside from the exhaust air outlet 902.

[0163] In some embodiments, 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.

[0164] 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.

[0165] In some embodiments, 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 in a vertical direction, drawing it in from the exhaust inlet 901 and discharging it from the room through the exhaust outlet 902. The operation of the exhaust fan 7 provides the power for the flow of stale air.

[0166] 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.

[0167] Furthermore, the first output shaft 421 of the first motor 42 is perpendicular to the second output shaft 54 ​​of the second motor 5. The first output shaft 421 of the first motor 42 is set along the length direction of the casing 1, and the corresponding heat exchange fan 41 is set along the length direction of the casing 1. This facilitates the flow of the driven airflow through the entire indoor heat exchanger 2, ensuring the balance of heat exchange efficiency of each component in the indoor heat exchanger 2.

[0168] The second motor 5 is positioned along the height of the main body 1000, and the exhaust fan 7 is also positioned vertically along its axis. The exhaust inlet 901 of the exhaust fan 7 opens upwards, meaning the axis of the exhaust fan 7 and the opening direction of the exhaust inlet 901 are aligned. When airflow enters the exhaust volute 9 from the exhaust inlet 901, the blades of the exhaust fan 7 rotate, carrying the airflow directly into the exhaust volute 9 along the axis of the exhaust fan 7 with a shorter path. This shortens the exhaust intake path and ensures unobstructed airflow, further reducing the intake air resistance and enabling... The increased airflow into the exhaust volute 9 through the exhaust inlet 901 increases the amount of stale air being exhausted from the room. Simultaneously, the fresh air fan 6 is axially positioned along the height of the main body 1000 and enters the fresh air volute 8 axially. When outdoor fresh air enters the fresh air volute 8 axially, the blades of the fresh air fan 6 rotate, directly drawing the fresh air into the fresh air volute 8. The path for fresh air intake is short and unobstructed, resulting in low wind resistance. This increases the amount of outdoor air entering the fresh air volute 8 and allows it to enter quickly, thereby increasing the amount of fresh air exhausted into the room.

[0169] Furthermore, the exhaust fan 7 is located above the fresh air fan 6, and the exhaust air inlet 901 is also located above the exhaust fan 7, allowing the indoor polluted air to enter from above. Therefore, the position of the fresh air outlet 802 of the fresh air fan 6 is lower than the position of the exhaust air inlet 901. The outdoor fresh air flows into the room through the fresh air outlet 802, while the polluted air that needs to be exhausted enters the exhaust air inlet 901 from above. In other words, the air coming out of the fresh air outlet 802 can reach people or objects in the room more closely and quickly, improving the comfort of people in the room. Meanwhile, the polluted air is discharged into the exhaust volute 9 from above, away from people and objects in the room, reducing the impact of polluted air on people in the room.

[0170] The exhaust fan 7 is mounted on the radial outer side of the motor housing 53, which saves the distance between the motor housing 53 and the exhaust fan 7 and the fresh air fan 6 along the axial direction, making the structure more compact and occupying less axial space. In addition, the motor housing 53 is embedded in the exhaust fan 7, which can keep the second motor 5 away from the water receiving tray at the bottom of the indoor heat exchanger 2, thereby reducing the impact of the water in the water receiving tray on the second motor 5, and also allowing the exhaust volute 9 to protect the second motor 5.

[0171] Furthermore, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously when in operation.

[0172] If the axial directions of the exhaust fan 7, the fresh air fan 6, and the second output shaft 54 ​​are all along the height direction of the main body 1000, the second motor 5 can be connected to the fresh air fan 6 along the height direction of the main body 1000 through the second output shaft 54. The second motor 5 delivers driving force from top to bottom. The exhaust fan 7 is fitted on the radial outer side of the motor housing 53 and is located above the fresh air fan 6. This arrangement can save vertical space in the main body 1000 and has a high degree of integration. The second motor 5 can drive the fresh air fan 6 and the exhaust fan 7 to rotate simultaneously in the height direction of the main body 1000 to achieve a vertical drive mode. At the same time, one motor can meet the requirements of outdoor fresh air entering the room and exhausting indoor polluted air to the outside, saving costs and improving work efficiency.

[0173] That is, the second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8, and the exhaust volute 9 together constitute the bidirectional ventilation assembly.

[0174] In some embodiments, in the height direction of the main body 1000, a heat exchange air inlet 101 is formed on the top of the housing 1, and an exhaust air inlet 901 is formed on the top of the exhaust volute 9.

[0175] First, since the heat exchange outlet 102 is located at the bottom of the casing 1 and the heat exchange inlet 101 is located at the top of the casing 1, a large amount of indoor air is drawn from the top of the casing 1 into the accommodating cavity V1. The exhaust inlet 901 and the heat exchange inlet 101 are both located at the top. When air is drawn into the vicinity of the heat exchange inlet 101, it is also close to the exhaust inlet 901, which increases the amount of air entering the exhaust inlet 901, thereby improving the efficiency of indoor air being discharged to the outside.

[0176] In other words, when the exhaust fan 7 is located above the fresh air fan 6, the exhaust air inlet 901 will also be set at a relatively high position in the height direction of the main body 1000, that is, the exhaust air inlet 901 is relatively close to the heat exchange air inlet 101 of the air conditioner. Therefore, the heat exchange air inlet 101 can be directly used as the air intake of the exhaust fan 7 on the casing, without having to open an air intake in other locations, which simplifies the process and improves the overall appearance.

[0177] In some embodiments, the exhaust outlet 902 is disposed on the peripheral wall of the exhaust volute 9, and the exhaust outlet 902 is configured to open in the longitudinal direction of the main body 1000 toward the direction away from the heat exchange fan 41.

[0178] The exhaust volute 9 can be constructed as a disc structure. The exhaust fan 7 is installed inside the exhaust volute 9. The exhaust fan 7 is axially inlet and radially outlet, that is, the exhaust inlet 901 is set along the axial direction of the exhaust volute 9, and the exhaust outlet 902 is set on the outer peripheral wall of the exhaust volute 9. In the length direction of the main body 1000, the exhaust outlet 902 opens in the direction away from the heat exchange fan 41. If the heat exchange fan 41 is located in the right side area of ​​the exhaust volute 9, the exhaust outlet 902 can open to the left, so that the airflow can flow out of the exhaust volute 9 along the left side.

[0179] Therefore, through the above settings, the exhaust fan 7 can drive indoor air to flow into the exhaust volute 9 in the vertical direction and discharge it from the left side of the exhaust volute 9, so that the airflow can be quickly discharged from the casing 1. This setting of the airflow direction can reduce the airflow path, thereby improving the exhaust efficiency of the exhaust fan 7, and facilitates the assembly of the exhaust outlet 902 and the connecting pipe, making disassembly and assembly convenient and maintenance costs low.

[0180] In some embodiments, the exhaust vent 902 may also open to the front and rear, and the configuration is varied and can be flexibly selected.

[0181] In some embodiments, the fresh air inlet 801 opens downwards along the height direction of the main body 1000.

[0182] Therefore, by setting a downward-facing open fresh air inlet 801, and with the axial direction of the fresh air volute 8 along the height direction of the main body 1000, air can be directly introduced along the axial direction during intake. In contrast, when radial air intake is used in the prior art, the air intake path needs to be radial and flow along the axial direction, the path is winding, and it may have a large airflow driving resistance due to the influence of the side wall of the fresh air volute 8. The embodiment of the present invention can reduce the wind resistance such as air intake obstruction and shorten the air intake path. At the same time, it can be staggered with the upward-facing exhaust air inlet 901 to reduce the mutual influence between fresh air and polluted air.

[0183] In some embodiments, the fresh air outlet 802 opens forward and downward along the body 1000.

[0184] In practice, air conditioners are generally installed in the upper part of the room, higher than the user. The lower front side of the air conditioner faces the user and objects in the room, and the fresh air outlet 802 opens forward and downward. When the fresh air is discharged into the room, it can make smoother and better contact with the user. Furthermore, the heat exchange outlet 102 is located below, and some of the fresh air flowing out of the fresh air outlet 802 can be close to or partially overlap with the air outlet area of ​​the heat exchange outlet 102. This is conducive to the mixing of fresh air with the indoor air after heat exchange. On the one hand, it improves the uniformity of the fresh air after mixing in the indoor air. On the other hand, the fresh air can absorb the cold or heat of the indoor air after heat exchange, so that the temperature of the fresh air is close to the indoor temperature, improving the comfort of blowing air.

[0185] 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.

[0186] In some embodiments, the fresh air volute 8 includes: a first volute 81 and a second volute 82, wherein the first volute 81 is detachably connected to the exhaust volute 9; the second volute 82 is located on the side of the first volute 81 away from the exhaust volute 9, and the second volute 82 is detachably connected to the first volute 81.

[0187] During the design process, the fresh air volute 8 can be designed as a disc structure, that is, both the first volute 81 and the second volute 82 can be constructed as disc structures. The first volute 81 is distributed close to the exhaust volute 9, and the second volute 82 is located on the side of the first volute 81 away from the exhaust volute 9. In this way, the two ends of the first volute 81 are connected to the exhaust volute 9 and the second volute 82 respectively, which can realize the connection between the fresh air volute 8 and the exhaust volute 9, so that the exhaust fan 7 can be enclosed in the exhaust volute 9 and the fresh air fan 6 can be enclosed in the fresh air volute 8.

[0188] For example, the first volute 81 is fitted and connected to the exhaust volute 9, and the two can be detachably connected by bolts or other connecting parts. The second volute 82 can also be detachably connected to the first volute 81 by bolts or other connecting parts. This connection method is simple and reliable.

[0189] In some embodiments, the first volute 81 and the second volute 82 together define a volute cavity V011, and the fresh air fan 6 is located inside the volute cavity V011; the first volute 81 and the second volute 82 define a fresh air outlet 802, and the second volute 82 has a fresh air inlet 801 formed on the side opposite to the first volute 81.

[0190] The first volute 81 and the second volute 82 each have a cavity, and the first volute 81 and the second volute 82 are connected to define a volute cavity V011. The fresh air fan 6 is located in the volute cavity V011. There is a gap between the fresh air fan 6 and the inner wall of the volute cavity V011 for air flow. The fresh air fan 6 is coaxially connected to the second output shaft 54 ​​of the second motor 5.

[0191] The first volute 81 and the second volute 82 define a fresh air outlet 802, and the second volute 82 has a fresh air inlet 801 formed on the side opposite to the first volute 81. The first volute 81 and the second volute 82 are distributed along the height of the main body 1000, with the first volute 81 located above the second volute 82. The fresh air outlet 802 defined by the first volute 81 and the second volute 82 can open forward. A fresh air inlet 801 is formed on the lower side of the second volute 82 and opens downward. This allows fresh air to enter the second volute 82 and the first volute 81 from the fresh air inlet 801 on the lower side of the second volute 82, and to be discharged forward into the room from the fresh air outlet 802 formed by the first volute 81 and the second volute 82.

[0192] When the fresh air inlet 801 is located on the lower side of the second volute 82, it is understood that the fresh air inlet 801 needs to be connected to a duct to introduce outdoor air, which is referred to here as the fresh air inlet pipe 141. The fresh air inlet pipe 141 can be a part 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.

[0193] The fresh air inlet 801 is located below the main body 1000, and 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, the wall-mounted air conditioner 10000 can still maintain a slim and light shape.

[0194] Furthermore, the part 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 height direction of the main body 1000, there is free space around the bottom of the circle. This space can be used to set up the fresh air inlet 801 to connect 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, which can control the height dimension of the main body 1000.

[0195] In some embodiments, the air intake direction of the fresh air inlet 801 is perpendicular to the length direction of the main body 1000. In this way, after a bidirectional ventilation component is provided at the end of the wall-mounted air conditioner 10000, when the fresh air inlet pipe 141 is connected to the fresh air inlet 801, the fresh air inlet pipe 141 will not cause the wall-mounted air conditioner 10000 to be excessively elongated as a whole.

[0196] 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.

[0197] In some embodiments, the fresh air outlet 802 can also be located directly in front of the main body 1000, and the casing outlet 105 can be correspondingly located on the front side of the casing 1, with the casing outlet 105 having the same size as the fresh air outlet 802. This facilitates the output of fresh air from the front of the main body 1000. When the wall-mounted air conditioner 10000 is installed on a wall, especially at a high position, there are few obstructions in front, and air can be delivered from the front to ensure a large air supply area for fresh air.

[0198] For example, such as Figure 1 As shown, the housing 1 has an air guide grille 16 at the housing air outlet 105 to adjust the direction of fresh air output.

[0199] In some embodiments, the fresh air outlet 802 corresponds to the air outlet 105 of the casing, and the fresh air is delivered to the room. The direction of the fresh air flow can be guided by the roof, so that the fresh air flows along the roof and the air delivery area is expanded.

[0200] Furthermore, since the heat exchange air inlet 101 is located above the heat exchange air outlet 102, the heat exchange air inlet 101 can be positioned relatively high on the casing 1. In this way, some of the fresh air blown out by 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.

[0201] 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.

[0202] 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 chambers V12 within the accommodating cavity V1, such as... Figure 2As shown, a vertical partition can be installed inside the casing 1 to separate the first chamber V11 and the second chamber V12. The indoor heat exchanger 2 and the heat exchange fan 41 are located in the first chamber V11, and the bidirectional ventilation assembly is at least partially located in the second chamber V12. The heat exchange air inlet 101 and the heat exchange air outlet 102 on the casing 1 are provided corresponding to the first chamber V11.

[0203] In some embodiments, the second volute 82 includes: a second volute half 821, the second volute half 821 being located on the side of the first volute 81 away from the exhaust volute 9, and the second volute half 821 being detachably connected to the first volute 81, the second volute half 821 being provided with an axial ventilation port 8211, a volute cavity V011 being formed between the second volute half 821 and the first volute 81, the axial air inlet end of the fresh air fan 6 being disposed facing the axial ventilation port 8211, and the second volute half 821 and the first volute 81 surrounding a fresh air outlet 802.

[0204] In practice, by setting a second volute half 821, and connecting the second volute half 821 with the first volute 81, a volute cavity V011 for installing the fresh air fan 6 can be formed. When it is necessary to replace or repair the fresh air fan 6, it is convenient to connect and disassemble with the first volute 81. The second volute half 821 is provided with an axial ventilation port 8211, which can increase the intake volume of fresh air and reduce the weight of the fresh air volute 8.

[0205] In some embodiments, the second volute 82 further includes a fan cover 822, which is located on the side of the second volute half 821 away from the first volute 81 and is 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, and a fresh air inlet 801 is formed in the fan cover 822.

[0206] For example, the first volute 81 and the second volute half 821 are fitted together and connected, and the two can be detachably connected by bolts or other connecting parts. The second volute half 821 and the fan cover 822 can also be detachably connected by bolts or other connecting parts. This connection method is simple and reliable.

[0207] 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 formed in this way can cover the axial air inlet of the fresh air fan 6. The fresh air cavity V012 can accommodate air, allowing air to enter the fresh air cavity V012 axially from the fresh air inlet 801, thereby improving the air intake efficiency of the fresh air fan 6 in the fresh air cavity V012 and reducing air intake loss.

[0208] In the height direction of the main body, the fan cover 822 is located on the lower side of the second volute half 821. The upper side of the second volute half 821 is connected to the first volute 81. Both the first volute 81 and the second volute 82 are spaced apart from the indoor heat exchanger 2. In this way, the indoor heat exchanger 2 has little impact on the temperature of the fresh air when cooling or heating. Especially when cooling, the ability of the cold energy generated by the indoor heat exchanger 2 to reduce the air temperature in the volute cavity V011 decreases, and the air in the volute cavity V011 is less likely to be overcooled and produce condensate.

[0209] In some embodiments, the wall-mounted air conditioner 10000 further includes a purification component 11, which is installed in the fresh air cavity V012 and connected to the second volute 82. When the fresh air fan 6 rotates, the outdoor air entering the fresh air volute 8 flows through the purification component 11 and then enters the room through the fresh air outlet 802.

[0210] Reference Figure 8 The purification component 11 is installed in the fresh air duct V01 to purify the fresh air blown into the room and improve the cleanliness of the indoor air.

[0211] For example, the purification component 11 is installed inside the fresh air cavity V012, for example, the purification component 11 is located at the axial air inlet end of the fresh air fan 6. The rotation of the fresh air fan 6 can allow outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and can allow outdoor air to enter the fresh air volute 8, pass through the purification component 11, and then enter the room from the fresh air outlet 802.

[0212] In this way, the direction of the fresh air flow can almost contact the maximum area of ​​the purification component 11, so that the fresh air can be effectively purified, and the fresh air intake consumption can be further reduced, thereby increasing the fresh air volume.

[0213] In some embodiments, the purification component 11 includes a filter screen 111 that covers the axial vent 8211.

[0214] For example, such as Figure 11 As shown, 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's placement 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.

[0215] 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.

[0216] For example, filter 111 is square, which makes it easy to position and install filter 111.

[0217] In some embodiments, refer to Figure 8 A portion of the fresh air cavity V012 constitutes an empty cavity V0121. The cavity V0121 is located on the side of the purification component 11 away from the fresh air fan 6, and the fresh air inlet 801 is connected to the cavity V0121.

[0218] For example, a purification component 11 is installed in the fresh air cavity V012 near the fresh air fan 6. 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 from 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.

[0219] 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:

[0220] 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.

[0221] 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.

[0222] Third, reduce airflow impact and absorb noise.

[0223] 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.

[0224] In some embodiments, 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.

[0225] That is, the mounting port 803 is formed by 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. In this way, the size of the mounting port 803 can be set to be larger, which makes it convenient to install a larger size purification component 11.

[0226] Furthermore, the mounting port 803 is open to the front of the main body, making it more convenient to disassemble and install the purification component 11.

[0227] In some embodiments, the exhaust fan 7 includes an exhaust wheel 71 and an exhaust blade 72, wherein the exhaust blade 72 is located at the outer edge of the exhaust wheel 71 and extends along the axial direction of the exhaust wheel 71 toward a direction away from the fresh air fan 6.

[0228] Among them, the exhaust wheel 71 is the support structure of the exhaust fan 7, and the exhaust blades 72 are connected to the outer edge of the exhaust wheel 71 away from its center, so that the airflow can flow out of the exhaust fan 7 along the outer edge area of ​​the exhaust wheel 71. The exhaust wheel 71 is coaxially arranged with the second motor 5 and connected to the motor housing 53 of the second motor 5. The exhaust blades 72 extend axially and only extend in the direction away from the fresh air fan 6.

[0229] 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.

[0230] Moreover, the blade cylinder formed by the multiple exhaust blades 72 arranged circumferentially along the exhaust wheel 71 is open on the side facing the axial air inlet, which facilitates airflow intake, reduces airflow resistance, and ensures the intake volume of exhaust air.

[0231] In some embodiments, the exhaust fan 7 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, such that the side of the protrusion 74 near the second motor 5 forms a receiving groove VO7 for the second motor 5; 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.

[0232] For example, the exhaust fan disc 71 can be circular, with a protrusion 74 located at its center and on the side of the exhaust fan disc 71 closest to the fresh air fan 6. The protrusion 74 extends axially toward the fresh air fan 6. Alternatively, the protrusion 74 can be cylindrical, with a cavity on the side away from the fresh air fan 6, forming a receiving groove V07 to accommodate parts of the stator 51 and rotor 52. The protrusion 74 can also support the stator 51. The design of the protrusion 74 forming the receiving groove V07 can improve the integration of the first volute 81 and the exhaust fan 7, and also improve the stability of the second motor 5 connected within the first volute 81. Furthermore, the fact that part of the second motor 5 extends into the exhaust fan 7 saves space in the overall structure, resulting in a compact structure and ensuring a reliable and stable connection between the second motor 5 and the exhaust fan 7.

[0233] In some embodiments, the first volute 81 includes a first volute end plate 811 and a first volute perimeter plate 812. The first volute perimeter plate 812 extends along the edge of the first volute end plate 811 in a direction away from the exhaust volute 9. The first volute end plate 811 is located on the side away from the fresh air fan 6 and extends towards the side closer to the fresh air fan 6. In this way, a mounting cavity can be formed between the first volute end plate 811 and the first volute perimeter plate 812 for mounting the exhaust fan 7, and an air flow channel is formed between the exhaust fan 7 and the first volute perimeter plate 812 for air flow.

[0234] The central portion of the first volute end plate 811 forms a recess 813 facing into the fresh air fan 6. At least a portion of the protrusion 74 is located within the recess 813.

[0235] Therefore, 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. Moreover, the connection method is simple, the centering is high, and the assembly accuracy can be improved. Furthermore, when the first volute end plate 811 is connected to the exhaust fan 7, the protrusion 74 and the recess 813 share a portion of the axial space, that is, the first volute end plate 811 and the exhaust fan 7 share a portion of the axial space, thereby saving axial space, improving the integration of the connection between the fresh air volute 8 and the exhaust volute 9, and reducing the volume of the overall structure.

[0236] In some embodiments, the recessed portion 813 has a perforation portion 814 at its center, and the second output shaft 54 ​​is connected to the fresh air fan 6 through the perforation portion 814.

[0237] In this way, during installation, the second output shaft 54 ​​is passed through the through hole 814 and then through the first volute end plate 811 and connected to the fresh air fan 6. During the connection process, only the second output shaft 54 ​​is passed through the first volute end plate 811, which helps to seal, reduce the chance of fresh air and exhaust air flowing between each other, reduce airflow disturbance, and the connection method is simple and easy to disassemble and assemble.

[0238] Furthermore, this design not only ensures small gaps between internal parts and prevents them from loosening, but also allows for shorter air ducts and a smaller housing size, thereby reducing the overall weight of the main body 1000 and making it appear thinner and lighter. It also ensures reliable axial installation of the stator 51, rotor 52, and motor housing 53, guaranteeing that the second motor 5 can output sufficient power to meet the needs of exhaust and fresh air volumes. It 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 and 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 prone to shaking, thus avoiding wear and vibration caused by friction with the volute.

[0239] Additionally, refer to Figure 11 As shown, 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 more compact assembly, reducing the overall space required.

[0240] 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.

[0241] In some embodiments, the first volute 81 and the second volute 82 define a fresh air outlet 802.

[0242] The volute cavity V011 formed by the first volute 81 and the second volute 82 is used to install the fresh air fan 6. A fresh air outlet 802 can be set on the front side of the second volute 82. When the second volute 82 and the first volute 81 are connected, the fresh air outlet 802 is located on the front side of the fresh air volute 8. When the fresh air fan 6 inside the fresh air volute 8 rotates, it can bring fresh air out from the fresh air outlet 802. That is, there is no need to set up a fresh air outlet duct. The fresh air outlet 802 can be defined by the first volute 81 and the second volute 82, which reduces the complexity of the structure and shortens the fresh air outlet path, thus improving the air outlet efficiency.

[0243] In some embodiments, 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 second output shaft 54 ​​of the second motor 5. The fresh air blades 62 include a first fresh air blade that extends from the fresh air impeller 61 toward a direction away from the exhaust fan 7.

[0244] Among them, the fresh air wheel 61 is the supporting structure of the fresh air fan 6, and the fresh air blades 62 are connected to the outer edge of the fresh air wheel 61 away from its center, so that the airflow can flow out of the fresh air fan 6 along the outer edge area of ​​the fresh air wheel 61. The fresh air blades 62 include a first fresh air blade 621, that is, the first fresh air blade 621 extends downward. The blade tube formed by the first fresh air blades 621 arranged circumferentially is open on the side facing the axial air inlet end, which facilitates the intake of airflow, reduces the air intake resistance, and ensures the intake volume of fresh air.

[0245] In some embodiments, refer to Figure 11 As shown, the fresh air blade 62 also includes a second fresh air blade 622, which extends from the fresh air wheel 61 toward the direction close to the exhaust fan 7.

[0246] At this point, the second fresh air blade 622 extends upward, thus forming two sets of blades on both sides of the fresh air wheel 61. This means that the fresh air fan 6 includes double-layer centrifugal blades. In this way, while meeting the demand for large air volume, the double-layer centrifugal blade structure design helps to increase the overall structural strength of the centrifugal fan.

[0247] In some embodiments, the length of the second fresh air blade 622 is less than the length of the first fresh air blade 621 along the axial direction of the fresh air fan 6.

[0248] The first fresh air blade 621 is oriented axially toward the fresh air inlet 801. The longer blade can capture more air and drive airflow. Therefore, the first fresh air blade 621 has a larger axial length, which is beneficial to obtain a larger fresh air intake volume by utilizing the first fresh air blade 621.

[0249] Using a shorter second fresh air blade 622 is beneficial for supplementing the fresh air intake. The volume between the first fresh air blade 621 and the first volute end plate 811 is small, which means the airflow volume is small. When the second fresh air blade 622 rotates, it can drive this part of the airflow and discharge it from the fresh air outlet 802. Therefore, when the airflow volume is small, it is not necessary to set a longer second fresh air blade 622.

[0250] The use of a shorter second fresh air blade 622 is beneficial for supplementing the fresh air intake. Moreover, the first fresh air blade 621 on the windward side is longer, which helps to ensure the fresh air volume.

[0251] In some embodiments, a disc hole 612 is formed on the fresh air impeller 61, and 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.

[0252] For example, the disc hole 612 is closer to the center of the fresh air disc 61 than the fresh air blade 62, which is beneficial for the second fresh air blade to guide the airflow axially into the space where the second fresh air blade 622 is located when it draws air from the disc hole 612, thereby reducing the turbulence caused by competing with the first fresh air blade 621 for airflow.

[0253] In some embodiments, the total axial thickness of the stator 51, rotor 52 and motor housing 53 is M, and the axial thickness of the fresh air fan 6 is w, where w > M.

[0254] With the size and speed of the fresh air fan 6 remaining unchanged, a thicker fan can provide a greater air volume and air pressure. The blades of the fresh air fan 6 can have more space to rotate, thereby generating a greater airflow. In other words, by setting the axial thickness of the fresh air fan 6 to be thicker, a larger fresh air volume can be ensured. At the same time, the second motor 5 does not need to occupy too much air duct space.

[0255] 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. S1 = πD1*W, where D1 is the outer diameter of the fresh air fan 6 and W is the axial thickness of the fresh air fan 6. S2 = πD2*N, where D2 is the outer diameter of the exhaust fan 7 and N is the axial thickness of the exhaust fan 7. S1 > S2.

[0256] Wherein, 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 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 W. Here, there can be one fresh air impeller 61 on the fresh air fan 6, or at least two that are spaced apart along the axial direction. Each fresh air impeller 61 can have only one ring of fresh air blades 62 on one side of its axial direction, or it can have one ring of fresh air blades 62 on each side.

[0257] When all the fresh air discs 61 and fresh air blades 62 are projected vertically onto the axis of the fresh air fan 6, the distance between the two farthest points in the projection is equal to W.

[0258] 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 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 N. 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 N.

[0259] 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.

[0260] For example, according to the structural and functional requirements designed in this embodiment, 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.

[0261] 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 (see reference). Figure 2 (As shown), on the other hand, the flow paths of fresh air and exhaust air within the bidirectional ventilation component are easily kept from intersecting.

[0262] In some embodiments, the axial thickness of the exhaust fan 7 is N, and the axial thickness of the fresh air fan 6 is W, where N <W。

[0263] At this time, the amount of fresh air entering from the outside by the fresh air fan 6 is greater than the amount of indoor air being exhausted to the outside, thus ensuring that there is always a lot of fresh air in the room and improving the comfort of the room.

[0264] Furthermore, the main body of the fresh air fan 6 has a larger axial thickness, resulting in greater structural strength and the ability to withstand greater torque. In contrast, the exhaust fan 7 requires less airflow, and the smaller axial thickness of its main body allows for a reduction in exhaust airflow. This also reduces the axial dimensions of the second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8, and the exhaust volute 9.

[0265] In some embodiments, the total axial thickness of the stator 51, rotor 52 and motor housing 53 is M, and the axial thickness of the exhaust fan 7 is N, where M>N.

[0266] 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 the exhaust blades 72 is N. Since the second motor 5 needs to drive the rotation of the fresh air fan 6 and the exhaust fan 7 simultaneously, the total axial thickness of the stator 51, rotor 52 and motor housing 53 of the second motor 5 is set to be large, which meets the strength requirements for driving the fresh air fan 6 and the exhaust fan 7 simultaneously, and makes the rotational stability of the exhaust fan 7 and the fresh air fan 6 higher.

[0267] In some embodiments, the exhaust volute 9 includes an air guide ring 91, which is a circular tube and has a diameter that gradually decreases in the direction toward the fresh air volute 8. The area enclosed by the air guide ring 91 forms an exhaust air inlet 901.

[0268] As the diameter of the air guide ring 91 decreases, the channel through which the air flows becomes narrower. According to the principles of fluid dynamics, under the same flow rate, a narrower channel will increase the airflow speed, thereby increasing the wind speed and the amount of indoor air entering the exhaust air inlet 901, thus improving the exhaust efficiency.

[0269] In some embodiments, the exhaust fan 7 includes: an exhaust wheel 71, which is connected to the motor housing 53 of the second motor 5; and exhaust blades 72, which are connected to the side of the exhaust wheel 71 away from the fresh air volute 8, and the exhaust blades 72 are multiple and arranged circumferentially.

[0270] Furthermore, 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, and all exhaust blades 72 form a side edge recess at the point where the distance of the blade side edge 721 decreases; the end of the air guide ring 91 is located in the side edge recess.

[0271] like Figure 8 and Figure 11As shown, the edge of the exhaust blade 72 furthest from the exhaust wheel 71 is the blade side edge 721, and at least a portion of the blade side edge 721 is a transition section 7212. In the radially inward direction of the exhaust fan 7, the distance between the transition section 7212 and the exhaust wheel 71 decreases, and all exhaust blades 72 form a side edge recess 723 at the transition section 7212. The end of the air guide ring 91 is located within the side edge recess 723.

[0272] For example, 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 arrangement, 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.

[0273] Furthermore, after the exhaust fan 7 rotates, the exhaust blades 72 form a funnel-shaped surface with a reduced diameter on the surface swept by the transition section 7212, which is conducive to the airflow concentrating towards the center and reducing the energy loss caused by airflow disturbance.

[0274] In some embodiments, such as Figure 14 As shown, 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 fully converged, resulting in a weak airflow convergence effect and easy airflow dispersion. The exhaust fan 7 then requires 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.

[0275] For example, the axial dimension Z1 of the air guide ring 91 can be 2mm, 3mm, 5mm, 8mm, 10mm, 12mm, etc.

[0276] In some embodiments, such as Figure 14 As shown, the axial distance between the end of the air guide ring 91 and the exhaust blade 72 is Z2, which satisfies 1mm≤Z2≤5mm.

[0277] 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.

[0278] 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.

[0279] In some embodiments, 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.

[0280] In other words, an air inlet 103 can be provided on the housing 1, connecting to the second chamber V12. An air outlet 105 can also be provided on the housing 1, connecting to the second chamber V12. No physical duct is needed between the air inlet 103 and the exhaust 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, thus concealing the air inlet 103 and improving the aesthetics.

[0281] Furthermore, the top-mounted housing air inlet 103 can be directly opposite the exhaust air inlet 901, making the distance between the housing air inlet 103 and the exhaust air inlet 901 closer. The exhaust air intake path first enters the housing air inlet 103, which is located above the exhaust volute 9 along the axial direction. Thus, the exhaust air can enter the exhaust air inlet 901 along the axial direction from the housing air inlet 103. Compared to the prior art, where the exhaust air inlet 901 enters radially along the exhaust volute 9, and during the rotation of the exhaust fan 7, it is affected by the resistance of the side wall of the exhaust volute 9, and the radial exhaust air flows along the axial direction after entering radially, forming a tortuous exhaust air intake path, resulting in high exhaust air intake resistance and low exhaust air intake volume, the exhaust air intake path of this embodiment is unobstructed, directly reducing the exhaust air intake path along the axial direction. After the indoor air enters the accommodating cavity along the housing air inlet 103, the exhaust air intake volume is further increased.

[0282] In some embodiments, 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 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.

[0283] If the air inlet 103 of the casing is located on the left side of the main body 1000, and the exhaust fan 7 is also located on the left side of the main body 1000, the gas flows to the exhaust fan 7 through a curved path, achieving a different air intake method than the above. At this time, the path between the air inlet 103 of the casing and the exhaust air inlet 901 is still relatively short, which can also ensure the exhaust air volume after the indoor air enters the accommodating cavity along the air inlet 103 of the casing.

[0284] Therefore, there are multiple options for the connection path between the air inlet 103 and the exhaust air inlet 901, which can be selectively set according to actual space requirements.

[0285] In some embodiments, the wall-mounted air conditioner 10000 further includes an electrical box 13 disposed within a cavity; wherein the electrical box 13 and the first motor 42 are located at the same end in the length direction of the main body 1000; or, the electrical box 13 and the second motor 5 are located at the same end in the length direction of the main body 1000.

[0286] When the electrical box 13 and the bidirectional ventilation assembly are located at the same horizontal end of the heat exchange fan 41, the electrical box 13 is situated at the top of the fresh air volute 8 and the exhaust volute 9. This arrangement further facilitates control over the length of the wall-mounted air conditioner 10000.

[0287] In addition, when the electrical box 13 is located at one end of the heat exchange fan 41, the fresh air fan 6 and the exhaust fan 7 are located at the other end of the heat exchange fan 41. For example, the fresh air volute 8 and the exhaust volute 9 are both located at opposite ends of the heat exchange fan 41, and the operation of the fresh air volute 8 and the exhaust volute 9 has less interference with the electrical box 13.

[0288] In this embodiment of the invention, the electrical box 13 is arranged in the axial direction of the fresh air fan 6 and the exhaust fan 7, which improves the integration of the electrical box 13 with the fresh air fan 6 and the exhaust fan 7, reduces the length dimension of the air conditioner, makes full use of the vertical space of the main body 1000, and can make full use of the airflow driven by the heat exchange fan 6 and the fresh air fan 7 to dissipate heat from the electrical box 13.

[0289] In some embodiments, the wall-mounted air conditioner 10000 further includes an exhaust duct 14, which extends along the height of the main body 1000. The upper end of the exhaust duct 14 is connected to the exhaust outlet 902, and the lower end of the exhaust duct 14 extends to the outside of the casing 1.

[0290] In practice, the exhaust duct is set along the height of the main body 1000. That is, the airflow direction of the exhaust duct 14 and the exhaust air inlet 901 is basically along the axial direction of the fresh air fan 6 and the exhaust fan 7. This can improve the exhaust efficiency, save space in the length direction of the main body 1000, and also make the integration of the exhaust duct 14 with the exhaust volute 9 and the fresh air volute 8 higher, saving space.

[0291] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0292] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner, comprising: The main body includes; The housing has an internal cavity and a heat exchange inlet and a heat exchange outlet on its surface. An indoor heat exchanger is disposed within the accommodating cavity; A base is disposed within the accommodating cavity, and a volute-shaped air duct is formed thereon; A heat exchange fan is installed inside the volute air duct and is located on the side of the indoor heat exchanger away from the heat exchange air inlet. A first motor is disposed within the accommodating cavity and located at one end of the length direction of the main body. The first motor is used to drive the heat exchange fan to rotate so that the air inside the air conditioner exchanges heat with the indoor space. The first motor has a first output shaft, and the heat exchange fan is connected to the first output shaft. The first output shaft extends along the length direction of the main body. Its characteristic is that it further includes: A second motor is disposed within the accommodating cavity, and the second motor is located at the other end of the length direction of the main body. The second motor includes: A stator section having wound coils; The rotor portion is disposed around the outside of the stator portion in the radial direction of the stator portion; Motor housing, the motor housing being connected to the rotor portion; The second output shaft is fixedly connected to the motor housing, and the axial direction of the second output shaft is along the height direction of the main body; The fresh air fan is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan is connected to the second output shaft. The axial direction of the fresh air fan is along the height direction of the main body, and the fresh air fan is located below the stator in the height direction of the main body. An exhaust fan, which is a centrifugal fan with axial air intake and radial air exhaust, is sleeved on the radial outer side of the motor housing and is fixedly connected to the motor housing. The axial direction of the exhaust fan is along the height direction of the main body, and the exhaust fan is located above the fresh air fan in the height direction of the main body. A fresh air volute is formed inside the fresh air volute. A fresh air fan is installed inside the fresh air volute. A fresh air inlet and a fresh air outlet are formed on the fresh air volute. When the fresh air fan rotates, outdoor air can enter the fresh air volute from the fresh air inlet, and outdoor air entering the fresh air volute can enter the room from the fresh air outlet. An exhaust volute is provided, an exhaust duct is formed inside the exhaust volute, an exhaust fan is installed inside the exhaust volute, an exhaust inlet and an exhaust outlet are formed on the exhaust volute, the exhaust inlet is open upward along the vertical direction of the main body, 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; When the second motor is in operation, it drives the fresh air fan and the exhaust fan to rotate synchronously.

2. The wall-mounted air conditioner according to claim 1, characterized in that, In the height direction of the main body, the heat exchange air inlet is formed at the top of the housing, and the exhaust air inlet is formed at the top of the exhaust volute.

3. The wall-mounted air conditioner according to claim 1, characterized in that, The exhaust outlet is located on the peripheral wall of the exhaust volute, and the exhaust outlet is configured to open in the direction away from the heat exchange fan along the length of the main body.

4. The wall-mounted air conditioner according to claim 1, characterized in that, The fresh air inlet opens downwards along the height of the main body.

5. The wall-mounted air conditioner according to claim 1, characterized in that, The fresh air outlet faces forward and downward.

6. The wall-mounted air conditioner according to any one of claims 1-5, characterized in that, The fresh air volute includes: The first volute is detachably connected to the exhaust volute. The second volute is located on the side of the first volute away from the exhaust volute, and the second volute is detachably connected to the first volute. The first volute and the second volute together define a volute cavity, and the fresh air fan is located inside the volute cavity; The second volute has the fresh air inlet formed on the side opposite to the first volute.

7. The wall-mounted air conditioner according to claim 6, characterized in that, The second volute includes: The second volute half is located on the side of the first volute away from the exhaust volute, and the second volute half is detachably connected to the first volute. The second volute half is provided with an axial ventilation port, and the volute cavity is formed between the second volute half and the first volute. The axial air inlet of the fresh air fan is arranged facing the axial ventilation port, and the second volute half and the first volute surround the fresh air outlet.

8. The wall-mounted air conditioner according to claim 7, characterized in that, The second volute also includes a fan cover, which is located on the side of the second volute half away from the first volute and is connected to the second volute half. The cavity enclosed by the fan cover and the second volute half is a fresh air cavity, and the fresh air inlet is formed in the fan cover.

9. The wall-mounted air conditioner according to claim 8, characterized in that, It also includes a purification component, which is installed inside the fresh air cavity and connected to the second volute. When the fresh air fan rotates, the outdoor air entering the fresh air volute flows through the purification component and then enters the room through the fresh air outlet.

10. The wall-mounted air conditioner according to claim 9, characterized in that, The purification component includes a filter screen, which covers the axial ventilation opening.

11. The wall-mounted air conditioner according to claim 9, characterized in that, An installation opening is also 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.

12. The wall-mounted air conditioner according to claim 6, characterized in that, The exhaust fan includes: The exhaust fan disc and exhaust blades, wherein the exhaust blades are located on the outer edge of the exhaust fan disc and extend along the axial direction of the exhaust fan disc in a direction away from the fresh air fan; The exhaust fan includes a protrusion on the exhaust wheel, and the protrusion extends toward the fresh air fan relative to the exhaust wheel, 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 housed in the receiving groove.

13. The wall-mounted air conditioner according to claim 12, characterized in that, The first volute includes a first volute end plate and a first volute perimeter plate, wherein the first volute perimeter plate extends along the edge of the first volute end plate in a direction away from the exhaust volute. The central portion of the first volute end plate forms a recess facing into the fresh air fan. At least a portion of the protrusion is located within the recess.

14. The wall-mounted air conditioner according to claim 13, characterized in that, The recessed portion has a perforation at its center, and the second output shaft is connected to the fresh air fan through the perforation.

15. The wall-mounted air conditioner according to claim 6, characterized in that, The first volute and the second volute define the fresh air outlet.

16. The wall-mounted air conditioner according to claim 1, characterized in that, The fresh air fan includes: The fresh air impeller is coaxially arranged with the second motor and connected to the second output shaft of the second motor; The fresh air blade includes a first fresh air blade that extends from the fresh air impeller toward a direction away from the exhaust fan.

17. The wall-mounted air conditioner according to claim 16, characterized in that, The fresh air blade also includes a second fresh air blade, which extends from the fresh air wheel toward the direction of the exhaust fan.

18. The wall-mounted air conditioner according to claim 17, characterized in that, Along the axial direction of the fresh air fan, the length of the second fresh air blade is less than the length of the first fresh air blade.

19. The wall-mounted air conditioner according to claim 17, characterized in that, The fresh air impeller has a disc hole, 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.

20. The wall-mounted air conditioner according to claim 1, characterized in that, The total axial thickness of the stator, the rotor, and the motor housing is M, and the axial thickness of the fresh air fan is w, where w > M.

21. The wall-mounted air conditioner according to claim 1, characterized in that, The area of ​​the outer circular curved surface of the fresh air fan is S1, and the area of ​​the outer circular curved surface of the exhaust fan is S2; S1 = πD1 * W, where D1 is the outer diameter of the fresh air fan and W is the axial thickness of the fresh air fan; S2 = πD2 * N, where D2 is the outer diameter of the exhaust fan and N is the axial thickness of the exhaust fan; The condition is satisfied that S1 > S2.

22. The wall-mounted air conditioner according to claim 1, characterized in that, The axial thickness of the exhaust fan is N, and the axial thickness of the fresh air fan is W, where N <W。 23. The wall-mounted air conditioner according to claim 1, characterized in that, The total axial thickness of the stator, the rotor, and the motor housing is M, and the axial thickness of the exhaust fan is N, where M > N.

24. The wall-mounted air conditioner according to claim 1, characterized in that, The exhaust volute includes an air guide ring, which is a circular tube and has a diameter that gradually decreases in the direction toward the fresh air volute. The area enclosed by the air guide ring forms the exhaust air inlet.

25. The wall-mounted air conditioner according to claim 24, characterized in that, The exhaust fan includes: An exhaust fan disc, wherein the exhaust fan disc is connected to the motor housing of the second motor; Exhaust blades are connected to the side of the exhaust wheel away from the fresh air volute, and there are multiple exhaust blades arranged circumferentially. 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 is reduced. All the exhaust blades form a side edge indentation at the point where the distance between the blade side edges is reduced. The end of the air guide ring is located within the side edge recess.

26. The wall-mounted air conditioner according to claim 1, characterized in that, The housing has an air inlet at one end where the second motor is located, and the air inlet is located at the top of the main body. A first ventilation duct is formed between the air inlet and the exhaust inlet. The exhaust fan rotates and drives indoor air into the first ventilation duct through the air inlet, and then into the exhaust volute through the exhaust inlet.

27. The wall-mounted air conditioner according to claim 1, characterized in that, The housing has an air inlet at one end where the second motor is located, and the air inlet is located on the side of the main body. The exhaust fan rotates and drives indoor air into the interior of the housing through the air inlet, and causes indoor air to enter the exhaust volute through the exhaust inlet.

28. The wall-mounted air conditioner according to claim 1, characterized in that, It also includes an electrical box, disposed within the accommodating cavity; The electrical box and the first motor are located at the same end along the length of the main body; Alternatively, the electrical box and the second motor are located at the same end along the length of the main body.

29. The wall-mounted air conditioner according to claim 1, characterized in that, It also includes an exhaust duct, which extends along the height of the main body, with the upper end of the exhaust duct connected to the exhaust outlet and the lower end of the exhaust duct extending outside the casing.

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